/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2004-2009 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.emulex.com * * Portions Copyright (C) 2004-2005 Christoph Hellwig * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of version 2 of the GNU General * * Public License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful. * * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * * TO BE LEGALLY INVALID. See the GNU General Public License for * * more details, a copy of which can be found in the file COPYING * * included with this package. * *******************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include "lpfc_hw4.h" #include "lpfc_hw.h" #include "lpfc_sli.h" #include "lpfc_sli4.h" #include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_crtn.h" #include "lpfc_logmsg.h" #include "lpfc_compat.h" #include "lpfc_debugfs.h" #include "lpfc_vport.h" /* There are only four IOCB completion types. */ typedef enum _lpfc_iocb_type { LPFC_UNKNOWN_IOCB, LPFC_UNSOL_IOCB, LPFC_SOL_IOCB, LPFC_ABORT_IOCB } lpfc_iocb_type; /* Provide function prototypes local to this module. */ static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t); static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *, uint8_t *, uint32_t *); static struct lpfc_iocbq *lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *, struct lpfc_iocbq *); static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *, struct hbq_dmabuf *); static IOCB_t * lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq) { return &iocbq->iocb; } /** * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue * @q: The Work Queue to operate on. * @wqe: The work Queue Entry to put on the Work queue. * * This routine will copy the contents of @wqe to the next available entry on * the @q. This function will then ring the Work Queue Doorbell to signal the * HBA to start processing the Work Queue Entry. This function returns 0 if * successful. If no entries are available on @q then this function will return * -ENOMEM. * The caller is expected to hold the hbalock when calling this routine. **/ static uint32_t lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe) { union lpfc_wqe *temp_wqe = q->qe[q->host_index].wqe; struct lpfc_register doorbell; uint32_t host_index; /* If the host has not yet processed the next entry then we are done */ if (((q->host_index + 1) % q->entry_count) == q->hba_index) return -ENOMEM; /* set consumption flag every once in a while */ if (!((q->host_index + 1) % LPFC_RELEASE_NOTIFICATION_INTERVAL)) bf_set(lpfc_wqe_gen_wqec, &wqe->generic, 1); lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size); /* Update the host index before invoking device */ host_index = q->host_index; q->host_index = ((q->host_index + 1) % q->entry_count); /* Ring Doorbell */ doorbell.word0 = 0; bf_set(lpfc_wq_doorbell_num_posted, &doorbell, 1); bf_set(lpfc_wq_doorbell_index, &doorbell, host_index); bf_set(lpfc_wq_doorbell_id, &doorbell, q->queue_id); writel(doorbell.word0, q->phba->sli4_hba.WQDBregaddr); readl(q->phba->sli4_hba.WQDBregaddr); /* Flush */ return 0; } /** * lpfc_sli4_wq_release - Updates internal hba index for WQ * @q: The Work Queue to operate on. * @index: The index to advance the hba index to. * * This routine will update the HBA index of a queue to reflect consumption of * Work Queue Entries by the HBA. When the HBA indicates that it has consumed * an entry the host calls this function to update the queue's internal * pointers. This routine returns the number of entries that were consumed by * the HBA. **/ static uint32_t lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index) { uint32_t released = 0; if (q->hba_index == index) return 0; do { q->hba_index = ((q->hba_index + 1) % q->entry_count); released++; } while (q->hba_index != index); return released; } /** * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue * @q: The Mailbox Queue to operate on. * @wqe: The Mailbox Queue Entry to put on the Work queue. * * This routine will copy the contents of @mqe to the next available entry on * the @q. This function will then ring the Work Queue Doorbell to signal the * HBA to start processing the Work Queue Entry. This function returns 0 if * successful. If no entries are available on @q then this function will return * -ENOMEM. * The caller is expected to hold the hbalock when calling this routine. **/ static uint32_t lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe) { struct lpfc_mqe *temp_mqe = q->qe[q->host_index].mqe; struct lpfc_register doorbell; uint32_t host_index; /* If the host has not yet processed the next entry then we are done */ if (((q->host_index + 1) % q->entry_count) == q->hba_index) return -ENOMEM; lpfc_sli_pcimem_bcopy(mqe, temp_mqe, q->entry_size); /* Save off the mailbox pointer for completion */ q->phba->mbox = (MAILBOX_t *)temp_mqe; /* Update the host index before invoking device */ host_index = q->host_index; q->host_index = ((q->host_index + 1) % q->entry_count); /* Ring Doorbell */ doorbell.word0 = 0; bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1); bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id); writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr); readl(q->phba->sli4_hba.MQDBregaddr); /* Flush */ return 0; } /** * lpfc_sli4_mq_release - Updates internal hba index for MQ * @q: The Mailbox Queue to operate on. * * This routine will update the HBA index of a queue to reflect consumption of * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed * an entry the host calls this function to update the queue's internal * pointers. This routine returns the number of entries that were consumed by * the HBA. **/ static uint32_t lpfc_sli4_mq_release(struct lpfc_queue *q) { /* Clear the mailbox pointer for completion */ q->phba->mbox = NULL; q->hba_index = ((q->hba_index + 1) % q->entry_count); return 1; } /** * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ * @q: The Event Queue to get the first valid EQE from * * This routine will get the first valid Event Queue Entry from @q, update * the queue's internal hba index, and return the EQE. If no valid EQEs are in * the Queue (no more work to do), or the Queue is full of EQEs that have been * processed, but not popped back to the HBA then this routine will return NULL. **/ static struct lpfc_eqe * lpfc_sli4_eq_get(struct lpfc_queue *q) { struct lpfc_eqe *eqe = q->qe[q->hba_index].eqe; /* If the next EQE is not valid then we are done */ if (!bf_get_le32(lpfc_eqe_valid, eqe)) return NULL; /* If the host has not yet processed the next entry then we are done */ if (((q->hba_index + 1) % q->entry_count) == q->host_index) return NULL; q->hba_index = ((q->hba_index + 1) % q->entry_count); return eqe; } /** * lpfc_sli4_eq_release - Indicates the host has finished processing an EQ * @q: The Event Queue that the host has completed processing for. * @arm: Indicates whether the host wants to arms this CQ. * * This routine will mark all Event Queue Entries on @q, from the last * known completed entry to the last entry that was processed, as completed * by clearing the valid bit for each completion queue entry. Then it will * notify the HBA, by ringing the doorbell, that the EQEs have been processed. * The internal host index in the @q will be updated by this routine to indicate * that the host has finished processing the entries. The @arm parameter * indicates that the queue should be rearmed when ringing the doorbell. * * This function will return the number of EQEs that were popped. **/ uint32_t lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm) { uint32_t released = 0; struct lpfc_eqe *temp_eqe; struct lpfc_register doorbell; /* while there are valid entries */ while (q->hba_index != q->host_index) { temp_eqe = q->qe[q->host_index].eqe; bf_set_le32(lpfc_eqe_valid, temp_eqe, 0); released++; q->host_index = ((q->host_index + 1) % q->entry_count); } if (unlikely(released == 0 && !arm)) return 0; /* ring doorbell for number popped */ doorbell.word0 = 0; if (arm) { bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1); bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1); } bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released); bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT); bf_set(lpfc_eqcq_doorbell_eqid, &doorbell, q->queue_id); writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr); /* PCI read to flush PCI pipeline on re-arming for INTx mode */ if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM)) readl(q->phba->sli4_hba.EQCQDBregaddr); return released; } /** * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ * @q: The Completion Queue to get the first valid CQE from * * This routine will get the first valid Completion Queue Entry from @q, update * the queue's internal hba index, and return the CQE. If no valid CQEs are in * the Queue (no more work to do), or the Queue is full of CQEs that have been * processed, but not popped back to the HBA then this routine will return NULL. **/ static struct lpfc_cqe * lpfc_sli4_cq_get(struct lpfc_queue *q) { struct lpfc_cqe *cqe; /* If the next CQE is not valid then we are done */ if (!bf_get_le32(lpfc_cqe_valid, q->qe[q->hba_index].cqe)) return NULL; /* If the host has not yet processed the next entry then we are done */ if (((q->hba_index + 1) % q->entry_count) == q->host_index) return NULL; cqe = q->qe[q->hba_index].cqe; q->hba_index = ((q->hba_index + 1) % q->entry_count); return cqe; } /** * lpfc_sli4_cq_release - Indicates the host has finished processing a CQ * @q: The Completion Queue that the host has completed processing for. * @arm: Indicates whether the host wants to arms this CQ. * * This routine will mark all Completion queue entries on @q, from the last * known completed entry to the last entry that was processed, as completed * by clearing the valid bit for each completion queue entry. Then it will * notify the HBA, by ringing the doorbell, that the CQEs have been processed. * The internal host index in the @q will be updated by this routine to indicate * that the host has finished processing the entries. The @arm parameter * indicates that the queue should be rearmed when ringing the doorbell. * * This function will return the number of CQEs that were released. **/ uint32_t lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm) { uint32_t released = 0; struct lpfc_cqe *temp_qe; struct lpfc_register doorbell; /* while there are valid entries */ while (q->hba_index != q->host_index) { temp_qe = q->qe[q->host_index].cqe; bf_set_le32(lpfc_cqe_valid, temp_qe, 0); released++; q->host_index = ((q->host_index + 1) % q->entry_count); } if (unlikely(released == 0 && !arm)) return 0; /* ring doorbell for number popped */ doorbell.word0 = 0; if (arm) bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1); bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released); bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION); bf_set(lpfc_eqcq_doorbell_cqid, &doorbell, q->queue_id); writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr); return released; } /** * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue * @q: The Header Receive Queue to operate on. * @wqe: The Receive Queue Entry to put on the Receive queue. * * This routine will copy the contents of @wqe to the next available entry on * the @q. This function will then ring the Receive Queue Doorbell to signal the * HBA to start processing the Receive Queue Entry. This function returns the * index that the rqe was copied to if successful. If no entries are available * on @q then this function will return -ENOMEM. * The caller is expected to hold the hbalock when calling this routine. **/ static int lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq, struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe) { struct lpfc_rqe *temp_hrqe = hq->qe[hq->host_index].rqe; struct lpfc_rqe *temp_drqe = dq->qe[dq->host_index].rqe; struct lpfc_register doorbell; int put_index = hq->host_index; if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ) return -EINVAL; if (hq->host_index != dq->host_index) return -EINVAL; /* If the host has not yet processed the next entry then we are done */ if (((hq->host_index + 1) % hq->entry_count) == hq->hba_index) return -EBUSY; lpfc_sli_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size); lpfc_sli_pcimem_bcopy(drqe, temp_drqe, dq->entry_size); /* Update the host index to point to the next slot */ hq->host_index = ((hq->host_index + 1) % hq->entry_count); dq->host_index = ((dq->host_index + 1) % dq->entry_count); /* Ring The Header Receive Queue Doorbell */ if (!(hq->host_index % LPFC_RQ_POST_BATCH)) { doorbell.word0 = 0; bf_set(lpfc_rq_doorbell_num_posted, &doorbell, LPFC_RQ_POST_BATCH); bf_set(lpfc_rq_doorbell_id, &doorbell, hq->queue_id); writel(doorbell.word0, hq->phba->sli4_hba.RQDBregaddr); } return put_index; } /** * lpfc_sli4_rq_release - Updates internal hba index for RQ * @q: The Header Receive Queue to operate on. * * This routine will update the HBA index of a queue to reflect consumption of * one Receive Queue Entry by the HBA. When the HBA indicates that it has * consumed an entry the host calls this function to update the queue's * internal pointers. This routine returns the number of entries that were * consumed by the HBA. **/ static uint32_t lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq) { if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ)) return 0; hq->hba_index = ((hq->hba_index + 1) % hq->entry_count); dq->hba_index = ((dq->hba_index + 1) % dq->entry_count); return 1; } /** * lpfc_cmd_iocb - Get next command iocb entry in the ring * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function returns pointer to next command iocb entry * in the command ring. The caller must hold hbalock to prevent * other threads consume the next command iocb. * SLI-2/SLI-3 provide different sized iocbs. **/ static inline IOCB_t * lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { return (IOCB_t *) (((char *) pring->cmdringaddr) + pring->cmdidx * phba->iocb_cmd_size); } /** * lpfc_resp_iocb - Get next response iocb entry in the ring * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function returns pointer to next response iocb entry * in the response ring. The caller must hold hbalock to make sure * that no other thread consume the next response iocb. * SLI-2/SLI-3 provide different sized iocbs. **/ static inline IOCB_t * lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { return (IOCB_t *) (((char *) pring->rspringaddr) + pring->rspidx * phba->iocb_rsp_size); } /** * __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool * @phba: Pointer to HBA context object. * * This function is called with hbalock held. This function * allocates a new driver iocb object from the iocb pool. If the * allocation is successful, it returns pointer to the newly * allocated iocb object else it returns NULL. **/ static struct lpfc_iocbq * __lpfc_sli_get_iocbq(struct lpfc_hba *phba) { struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; struct lpfc_iocbq * iocbq = NULL; list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list); return iocbq; } /** * __lpfc_clear_active_sglq - Remove the active sglq for this XRI. * @phba: Pointer to HBA context object. * @xritag: XRI value. * * This function clears the sglq pointer from the array of acive * sglq's. The xritag that is passed in is used to index into the * array. Before the xritag can be used it needs to be adjusted * by subtracting the xribase. * * Returns sglq ponter = success, NULL = Failure. **/ static struct lpfc_sglq * __lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag) { uint16_t adj_xri; struct lpfc_sglq *sglq; adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base; if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri) return NULL; sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri]; phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = NULL; return sglq; } /** * __lpfc_get_active_sglq - Get the active sglq for this XRI. * @phba: Pointer to HBA context object. * @xritag: XRI value. * * This function returns the sglq pointer from the array of acive * sglq's. The xritag that is passed in is used to index into the * array. Before the xritag can be used it needs to be adjusted * by subtracting the xribase. * * Returns sglq ponter = success, NULL = Failure. **/ struct lpfc_sglq * __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag) { uint16_t adj_xri; struct lpfc_sglq *sglq; adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base; if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri) return NULL; sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri]; return sglq; } /** * __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool * @phba: Pointer to HBA context object. * * This function is called with hbalock held. This function * Gets a new driver sglq object from the sglq list. If the * list is not empty then it is successful, it returns pointer to the newly * allocated sglq object else it returns NULL. **/ static struct lpfc_sglq * __lpfc_sli_get_sglq(struct lpfc_hba *phba) { struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list; struct lpfc_sglq *sglq = NULL; uint16_t adj_xri; list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list); if (!sglq) return NULL; adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base; phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq; sglq->state = SGL_ALLOCATED; return sglq; } /** * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool * @phba: Pointer to HBA context object. * * This function is called with no lock held. This function * allocates a new driver iocb object from the iocb pool. If the * allocation is successful, it returns pointer to the newly * allocated iocb object else it returns NULL. **/ struct lpfc_iocbq * lpfc_sli_get_iocbq(struct lpfc_hba *phba) { struct lpfc_iocbq * iocbq = NULL; unsigned long iflags; spin_lock_irqsave(&phba->hbalock, iflags); iocbq = __lpfc_sli_get_iocbq(phba); spin_unlock_irqrestore(&phba->hbalock, iflags); return iocbq; } /** * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool * @phba: Pointer to HBA context object. * @iocbq: Pointer to driver iocb object. * * This function is called with hbalock held to release driver * iocb object to the iocb pool. The iotag in the iocb object * does not change for each use of the iocb object. This function * clears all other fields of the iocb object when it is freed. * The sqlq structure that holds the xritag and phys and virtual * mappings for the scatter gather list is retrieved from the * active array of sglq. The get of the sglq pointer also clears * the entry in the array. If the status of the IO indiactes that * this IO was aborted then the sglq entry it put on the * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the * IO has good status or fails for any other reason then the sglq * entry is added to the free list (lpfc_sgl_list). **/ static void __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) { struct lpfc_sglq *sglq; size_t start_clean = offsetof(struct lpfc_iocbq, iocb); unsigned long iflag; if (iocbq->sli4_xritag == NO_XRI) sglq = NULL; else sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag); if (sglq) { if ((iocbq->iocb_flag & LPFC_EXCHANGE_BUSY) && (sglq->state != SGL_XRI_ABORTED)) { spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock, iflag); list_add(&sglq->list, &phba->sli4_hba.lpfc_abts_els_sgl_list); spin_unlock_irqrestore( &phba->sli4_hba.abts_sgl_list_lock, iflag); } else { sglq->state = SGL_FREED; list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list); } } /* * Clean all volatile data fields, preserve iotag and node struct. */ memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean); iocbq->sli4_xritag = NO_XRI; list_add_tail(&iocbq->list, &phba->lpfc_iocb_list); } /** * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool * @phba: Pointer to HBA context object. * @iocbq: Pointer to driver iocb object. * * This function is called with hbalock held to release driver * iocb object to the iocb pool. The iotag in the iocb object * does not change for each use of the iocb object. This function * clears all other fields of the iocb object when it is freed. **/ static void __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) { size_t start_clean = offsetof(struct lpfc_iocbq, iocb); /* * Clean all volatile data fields, preserve iotag and node struct. */ memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean); iocbq->sli4_xritag = NO_XRI; list_add_tail(&iocbq->list, &phba->lpfc_iocb_list); } /** * __lpfc_sli_release_iocbq - Release iocb to the iocb pool * @phba: Pointer to HBA context object. * @iocbq: Pointer to driver iocb object. * * This function is called with hbalock held to release driver * iocb object to the iocb pool. The iotag in the iocb object * does not change for each use of the iocb object. This function * clears all other fields of the iocb object when it is freed. **/ static void __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) { phba->__lpfc_sli_release_iocbq(phba, iocbq); } /** * lpfc_sli_release_iocbq - Release iocb to the iocb pool * @phba: Pointer to HBA context object. * @iocbq: Pointer to driver iocb object. * * This function is called with no lock held to release the iocb to * iocb pool. **/ void lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) { unsigned long iflags; /* * Clean all volatile data fields, preserve iotag and node struct. */ spin_lock_irqsave(&phba->hbalock, iflags); __lpfc_sli_release_iocbq(phba, iocbq); spin_unlock_irqrestore(&phba->hbalock, iflags); } /** * lpfc_sli_cancel_iocbs - Cancel all iocbs from a list. * @phba: Pointer to HBA context object. * @iocblist: List of IOCBs. * @ulpstatus: ULP status in IOCB command field. * @ulpWord4: ULP word-4 in IOCB command field. * * This function is called with a list of IOCBs to cancel. It cancels the IOCB * on the list by invoking the complete callback function associated with the * IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond * fields. **/ void lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist, uint32_t ulpstatus, uint32_t ulpWord4) { struct lpfc_iocbq *piocb; while (!list_empty(iocblist)) { list_remove_head(iocblist, piocb, struct lpfc_iocbq, list); if (!piocb->iocb_cmpl) lpfc_sli_release_iocbq(phba, piocb); else { piocb->iocb.ulpStatus = ulpstatus; piocb->iocb.un.ulpWord[4] = ulpWord4; (piocb->iocb_cmpl) (phba, piocb, piocb); } } return; } /** * lpfc_sli_iocb_cmd_type - Get the iocb type * @iocb_cmnd: iocb command code. * * This function is called by ring event handler function to get the iocb type. * This function translates the iocb command to an iocb command type used to * decide the final disposition of each completed IOCB. * The function returns * LPFC_UNKNOWN_IOCB if it is an unsupported iocb * LPFC_SOL_IOCB if it is a solicited iocb completion * LPFC_ABORT_IOCB if it is an abort iocb * LPFC_UNSOL_IOCB if it is an unsolicited iocb * * The caller is not required to hold any lock. **/ static lpfc_iocb_type lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd) { lpfc_iocb_type type = LPFC_UNKNOWN_IOCB; if (iocb_cmnd > CMD_MAX_IOCB_CMD) return 0; switch (iocb_cmnd) { case CMD_XMIT_SEQUENCE_CR: case CMD_XMIT_SEQUENCE_CX: case CMD_XMIT_BCAST_CN: case CMD_XMIT_BCAST_CX: case CMD_ELS_REQUEST_CR: case CMD_ELS_REQUEST_CX: case CMD_CREATE_XRI_CR: case CMD_CREATE_XRI_CX: case CMD_GET_RPI_CN: case CMD_XMIT_ELS_RSP_CX: case CMD_GET_RPI_CR: case CMD_FCP_IWRITE_CR: case CMD_FCP_IWRITE_CX: case CMD_FCP_IREAD_CR: case CMD_FCP_IREAD_CX: case CMD_FCP_ICMND_CR: case CMD_FCP_ICMND_CX: case CMD_FCP_TSEND_CX: case CMD_FCP_TRSP_CX: case CMD_FCP_TRECEIVE_CX: case CMD_FCP_AUTO_TRSP_CX: case CMD_ADAPTER_MSG: case CMD_ADAPTER_DUMP: case CMD_XMIT_SEQUENCE64_CR: case CMD_XMIT_SEQUENCE64_CX: case CMD_XMIT_BCAST64_CN: case CMD_XMIT_BCAST64_CX: case CMD_ELS_REQUEST64_CR: case CMD_ELS_REQUEST64_CX: case CMD_FCP_IWRITE64_CR: case CMD_FCP_IWRITE64_CX: case CMD_FCP_IREAD64_CR: case CMD_FCP_IREAD64_CX: case CMD_FCP_ICMND64_CR: case CMD_FCP_ICMND64_CX: case CMD_FCP_TSEND64_CX: case CMD_FCP_TRSP64_CX: case CMD_FCP_TRECEIVE64_CX: case CMD_GEN_REQUEST64_CR: case CMD_GEN_REQUEST64_CX: case CMD_XMIT_ELS_RSP64_CX: case DSSCMD_IWRITE64_CR: case DSSCMD_IWRITE64_CX: case DSSCMD_IREAD64_CR: case DSSCMD_IREAD64_CX: type = LPFC_SOL_IOCB; break; case CMD_ABORT_XRI_CN: case CMD_ABORT_XRI_CX: case CMD_CLOSE_XRI_CN: case CMD_CLOSE_XRI_CX: case CMD_XRI_ABORTED_CX: case CMD_ABORT_MXRI64_CN: case CMD_XMIT_BLS_RSP64_CX: type = LPFC_ABORT_IOCB; break; case CMD_RCV_SEQUENCE_CX: case CMD_RCV_ELS_REQ_CX: case CMD_RCV_SEQUENCE64_CX: case CMD_RCV_ELS_REQ64_CX: case CMD_ASYNC_STATUS: case CMD_IOCB_RCV_SEQ64_CX: case CMD_IOCB_RCV_ELS64_CX: case CMD_IOCB_RCV_CONT64_CX: case CMD_IOCB_RET_XRI64_CX: type = LPFC_UNSOL_IOCB; break; case CMD_IOCB_XMIT_MSEQ64_CR: case CMD_IOCB_XMIT_MSEQ64_CX: case CMD_IOCB_RCV_SEQ_LIST64_CX: case CMD_IOCB_RCV_ELS_LIST64_CX: case CMD_IOCB_CLOSE_EXTENDED_CN: case CMD_IOCB_ABORT_EXTENDED_CN: case CMD_IOCB_RET_HBQE64_CN: case CMD_IOCB_FCP_IBIDIR64_CR: case CMD_IOCB_FCP_IBIDIR64_CX: case CMD_IOCB_FCP_ITASKMGT64_CX: case CMD_IOCB_LOGENTRY_CN: case CMD_IOCB_LOGENTRY_ASYNC_CN: printk("%s - Unhandled SLI-3 Command x%x\n", __func__, iocb_cmnd); type = LPFC_UNKNOWN_IOCB; break; default: type = LPFC_UNKNOWN_IOCB; break; } return type; } /** * lpfc_sli_ring_map - Issue config_ring mbox for all rings * @phba: Pointer to HBA context object. * * This function is called from SLI initialization code * to configure every ring of the HBA's SLI interface. The * caller is not required to hold any lock. This function issues * a config_ring mailbox command for each ring. * This function returns zero if successful else returns a negative * error code. **/ static int lpfc_sli_ring_map(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; LPFC_MBOXQ_t *pmb; MAILBOX_t *pmbox; int i, rc, ret = 0; pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) return -ENOMEM; pmbox = &pmb->u.mb; phba->link_state = LPFC_INIT_MBX_CMDS; for (i = 0; i < psli->num_rings; i++) { lpfc_config_ring(phba, i, pmb); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0446 Adapter failed to init (%d), " "mbxCmd x%x CFG_RING, mbxStatus x%x, " "ring %d\n", rc, pmbox->mbxCommand, pmbox->mbxStatus, i); phba->link_state = LPFC_HBA_ERROR; ret = -ENXIO; break; } } mempool_free(pmb, phba->mbox_mem_pool); return ret; } /** * lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @piocb: Pointer to the driver iocb object. * * This function is called with hbalock held. The function adds the * new iocb to txcmplq of the given ring. This function always returns * 0. If this function is called for ELS ring, this function checks if * there is a vport associated with the ELS command. This function also * starts els_tmofunc timer if this is an ELS command. **/ static int lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *piocb) { list_add_tail(&piocb->list, &pring->txcmplq); pring->txcmplq_cnt++; if ((unlikely(pring->ringno == LPFC_ELS_RING)) && (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) { if (!piocb->vport) BUG(); else mod_timer(&piocb->vport->els_tmofunc, jiffies + HZ * (phba->fc_ratov << 1)); } return 0; } /** * lpfc_sli_ringtx_get - Get first element of the txq * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function is called with hbalock held to get next * iocb in txq of the given ring. If there is any iocb in * the txq, the function returns first iocb in the list after * removing the iocb from the list, else it returns NULL. **/ static struct lpfc_iocbq * lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { struct lpfc_iocbq *cmd_iocb; list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list); if (cmd_iocb != NULL) pring->txq_cnt--; return cmd_iocb; } /** * lpfc_sli_next_iocb_slot - Get next iocb slot in the ring * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function is called with hbalock held and the caller must post the * iocb without releasing the lock. If the caller releases the lock, * iocb slot returned by the function is not guaranteed to be available. * The function returns pointer to the next available iocb slot if there * is available slot in the ring, else it returns NULL. * If the get index of the ring is ahead of the put index, the function * will post an error attention event to the worker thread to take the * HBA to offline state. **/ static IOCB_t * lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; uint32_t max_cmd_idx = pring->numCiocb; if ((pring->next_cmdidx == pring->cmdidx) && (++pring->next_cmdidx >= max_cmd_idx)) pring->next_cmdidx = 0; if (unlikely(pring->local_getidx == pring->next_cmdidx)) { pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); if (unlikely(pring->local_getidx >= max_cmd_idx)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0315 Ring %d issue: portCmdGet %d " "is bigger than cmd ring %d\n", pring->ringno, pring->local_getidx, max_cmd_idx); phba->link_state = LPFC_HBA_ERROR; /* * All error attention handlers are posted to * worker thread */ phba->work_ha |= HA_ERATT; phba->work_hs = HS_FFER3; lpfc_worker_wake_up(phba); return NULL; } if (pring->local_getidx == pring->next_cmdidx) return NULL; } return lpfc_cmd_iocb(phba, pring); } /** * lpfc_sli_next_iotag - Get an iotag for the iocb * @phba: Pointer to HBA context object. * @iocbq: Pointer to driver iocb object. * * This function gets an iotag for the iocb. If there is no unused iotag and * the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup * array and assigns a new iotag. * The function returns the allocated iotag if successful, else returns zero. * Zero is not a valid iotag. * The caller is not required to hold any lock. **/ uint16_t lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) { struct lpfc_iocbq **new_arr; struct lpfc_iocbq **old_arr; size_t new_len; struct lpfc_sli *psli = &phba->sli; uint16_t iotag; spin_lock_irq(&phba->hbalock); iotag = psli->last_iotag; if(++iotag < psli->iocbq_lookup_len) { psli->last_iotag = iotag; psli->iocbq_lookup[iotag] = iocbq; spin_unlock_irq(&phba->hbalock); iocbq->iotag = iotag; return iotag; } else if (psli->iocbq_lookup_len < (0xffff - LPFC_IOCBQ_LOOKUP_INCREMENT)) { new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT; spin_unlock_irq(&phba->hbalock); new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *), GFP_KERNEL); if (new_arr) { spin_lock_irq(&phba->hbalock); old_arr = psli->iocbq_lookup; if (new_len <= psli->iocbq_lookup_len) { /* highly unprobable case */ kfree(new_arr); iotag = psli->last_iotag; if(++iotag < psli->iocbq_lookup_len) { psli->last_iotag = iotag; psli->iocbq_lookup[iotag] = iocbq; spin_unlock_irq(&phba->hbalock); iocbq->iotag = iotag; return iotag; } spin_unlock_irq(&phba->hbalock); return 0; } if (psli->iocbq_lookup) memcpy(new_arr, old_arr, ((psli->last_iotag + 1) * sizeof (struct lpfc_iocbq *))); psli->iocbq_lookup = new_arr; psli->iocbq_lookup_len = new_len; psli->last_iotag = iotag; psli->iocbq_lookup[iotag] = iocbq; spin_unlock_irq(&phba->hbalock); iocbq->iotag = iotag; kfree(old_arr); return iotag; } } else spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_ERR,LOG_SLI, "0318 Failed to allocate IOTAG.last IOTAG is %d\n", psli->last_iotag); return 0; } /** * lpfc_sli_submit_iocb - Submit an iocb to the firmware * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @iocb: Pointer to iocb slot in the ring. * @nextiocb: Pointer to driver iocb object which need to be * posted to firmware. * * This function is called with hbalock held to post a new iocb to * the firmware. This function copies the new iocb to ring iocb slot and * updates the ring pointers. It adds the new iocb to txcmplq if there is * a completion call back for this iocb else the function will free the * iocb object. **/ static void lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, IOCB_t *iocb, struct lpfc_iocbq *nextiocb) { /* * Set up an iotag */ nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0; if (pring->ringno == LPFC_ELS_RING) { lpfc_debugfs_slow_ring_trc(phba, "IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x", *(((uint32_t *) &nextiocb->iocb) + 4), *(((uint32_t *) &nextiocb->iocb) + 6), *(((uint32_t *) &nextiocb->iocb) + 7)); } /* * Issue iocb command to adapter */ lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size); wmb(); pring->stats.iocb_cmd++; /* * If there is no completion routine to call, we can release the * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF, * that have no rsp ring completion, iocb_cmpl MUST be NULL. */ if (nextiocb->iocb_cmpl) lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb); else __lpfc_sli_release_iocbq(phba, nextiocb); /* * Let the HBA know what IOCB slot will be the next one the * driver will put a command into. */ pring->cmdidx = pring->next_cmdidx; writel(pring->cmdidx, &phba->host_gp[pring->ringno].cmdPutInx); } /** * lpfc_sli_update_full_ring - Update the chip attention register * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * The caller is not required to hold any lock for calling this function. * This function updates the chip attention bits for the ring to inform firmware * that there are pending work to be done for this ring and requests an * interrupt when there is space available in the ring. This function is * called when the driver is unable to post more iocbs to the ring due * to unavailability of space in the ring. **/ static void lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { int ringno = pring->ringno; pring->flag |= LPFC_CALL_RING_AVAILABLE; wmb(); /* * Set ring 'ringno' to SET R0CE_REQ in Chip Att register. * The HBA will tell us when an IOCB entry is available. */ writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr); readl(phba->CAregaddr); /* flush */ pring->stats.iocb_cmd_full++; } /** * lpfc_sli_update_ring - Update chip attention register * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function updates the chip attention register bit for the * given ring to inform HBA that there is more work to be done * in this ring. The caller is not required to hold any lock. **/ static void lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { int ringno = pring->ringno; /* * Tell the HBA that there is work to do in this ring. */ if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) { wmb(); writel(CA_R0ATT << (ringno * 4), phba->CAregaddr); readl(phba->CAregaddr); /* flush */ } } /** * lpfc_sli_resume_iocb - Process iocbs in the txq * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function is called with hbalock held to post pending iocbs * in the txq to the firmware. This function is called when driver * detects space available in the ring. **/ static void lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { IOCB_t *iocb; struct lpfc_iocbq *nextiocb; /* * Check to see if: * (a) there is anything on the txq to send * (b) link is up * (c) link attention events can be processed (fcp ring only) * (d) IOCB processing is not blocked by the outstanding mbox command. */ if (pring->txq_cnt && lpfc_is_link_up(phba) && (pring->ringno != phba->sli.fcp_ring || phba->sli.sli_flag & LPFC_PROCESS_LA)) { while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && (nextiocb = lpfc_sli_ringtx_get(phba, pring))) lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); if (iocb) lpfc_sli_update_ring(phba, pring); else lpfc_sli_update_full_ring(phba, pring); } return; } /** * lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ * @phba: Pointer to HBA context object. * @hbqno: HBQ number. * * This function is called with hbalock held to get the next * available slot for the given HBQ. If there is free slot * available for the HBQ it will return pointer to the next available * HBQ entry else it will return NULL. **/ static struct lpfc_hbq_entry * lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno) { struct hbq_s *hbqp = &phba->hbqs[hbqno]; if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx && ++hbqp->next_hbqPutIdx >= hbqp->entry_count) hbqp->next_hbqPutIdx = 0; if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) { uint32_t raw_index = phba->hbq_get[hbqno]; uint32_t getidx = le32_to_cpu(raw_index); hbqp->local_hbqGetIdx = getidx; if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT, "1802 HBQ %d: local_hbqGetIdx " "%u is > than hbqp->entry_count %u\n", hbqno, hbqp->local_hbqGetIdx, hbqp->entry_count); phba->link_state = LPFC_HBA_ERROR; return NULL; } if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx) return NULL; } return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt + hbqp->hbqPutIdx; } /** * lpfc_sli_hbqbuf_free_all - Free all the hbq buffers * @phba: Pointer to HBA context object. * * This function is called with no lock held to free all the * hbq buffers while uninitializing the SLI interface. It also * frees the HBQ buffers returned by the firmware but not yet * processed by the upper layers. **/ void lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba) { struct lpfc_dmabuf *dmabuf, *next_dmabuf; struct hbq_dmabuf *hbq_buf; unsigned long flags; int i, hbq_count; uint32_t hbqno; hbq_count = lpfc_sli_hbq_count(); /* Return all memory used by all HBQs */ spin_lock_irqsave(&phba->hbalock, flags); for (i = 0; i < hbq_count; ++i) { list_for_each_entry_safe(dmabuf, next_dmabuf, &phba->hbqs[i].hbq_buffer_list, list) { hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf); list_del(&hbq_buf->dbuf.list); (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf); } phba->hbqs[i].buffer_count = 0; } /* Return all HBQ buffer that are in-fly */ list_for_each_entry_safe(dmabuf, next_dmabuf, &phba->rb_pend_list, list) { hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf); list_del(&hbq_buf->dbuf.list); if (hbq_buf->tag == -1) { (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) (phba, hbq_buf); } else { hbqno = hbq_buf->tag >> 16; if (hbqno >= LPFC_MAX_HBQS) (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) (phba, hbq_buf); else (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buf); } } /* Mark the HBQs not in use */ phba->hbq_in_use = 0; spin_unlock_irqrestore(&phba->hbalock, flags); } /** * lpfc_sli_hbq_to_firmware - Post the hbq buffer to firmware * @phba: Pointer to HBA context object. * @hbqno: HBQ number. * @hbq_buf: Pointer to HBQ buffer. * * This function is called with the hbalock held to post a * hbq buffer to the firmware. If the function finds an empty * slot in the HBQ, it will post the buffer. The function will return * pointer to the hbq entry if it successfully post the buffer * else it will return NULL. **/ static int lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno, struct hbq_dmabuf *hbq_buf) { return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf); } /** * lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware * @phba: Pointer to HBA context object. * @hbqno: HBQ number. * @hbq_buf: Pointer to HBQ buffer. * * This function is called with the hbalock held to post a hbq buffer to the * firmware. If the function finds an empty slot in the HBQ, it will post the * buffer and place it on the hbq_buffer_list. The function will return zero if * it successfully post the buffer else it will return an error. **/ static int lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno, struct hbq_dmabuf *hbq_buf) { struct lpfc_hbq_entry *hbqe; dma_addr_t physaddr = hbq_buf->dbuf.phys; /* Get next HBQ entry slot to use */ hbqe = lpfc_sli_next_hbq_slot(phba, hbqno); if (hbqe) { struct hbq_s *hbqp = &phba->hbqs[hbqno]; hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); hbqe->bde.addrLow = le32_to_cpu(putPaddrLow(physaddr)); hbqe->bde.tus.f.bdeSize = hbq_buf->size; hbqe->bde.tus.f.bdeFlags = 0; hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w); hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag); /* Sync SLIM */ hbqp->hbqPutIdx = hbqp->next_hbqPutIdx; writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno); /* flush */ readl(phba->hbq_put + hbqno); list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list); return 0; } else return -ENOMEM; } /** * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware * @phba: Pointer to HBA context object. * @hbqno: HBQ number. * @hbq_buf: Pointer to HBQ buffer. * * This function is called with the hbalock held to post an RQE to the SLI4 * firmware. If able to post the RQE to the RQ it will queue the hbq entry to * the hbq_buffer_list and return zero, otherwise it will return an error. **/ static int lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno, struct hbq_dmabuf *hbq_buf) { int rc; struct lpfc_rqe hrqe; struct lpfc_rqe drqe; hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys); hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys); drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys); drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys); rc = lpfc_sli4_rq_put(phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq, &hrqe, &drqe); if (rc < 0) return rc; hbq_buf->tag = rc; list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list); return 0; } /* HBQ for ELS and CT traffic. */ static struct lpfc_hbq_init lpfc_els_hbq = { .rn = 1, .entry_count = 256, .mask_count = 0, .profile = 0, .ring_mask = (1 << LPFC_ELS_RING), .buffer_count = 0, .init_count = 40, .add_count = 40, }; /* HBQ for the extra ring if needed */ static struct lpfc_hbq_init lpfc_extra_hbq = { .rn = 1, .entry_count = 200, .mask_count = 0, .profile = 0, .ring_mask = (1 << LPFC_EXTRA_RING), .buffer_count = 0, .init_count = 0, .add_count = 5, }; /* Array of HBQs */ struct lpfc_hbq_init *lpfc_hbq_defs[] = { &lpfc_els_hbq, &lpfc_extra_hbq, }; /** * lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ * @phba: Pointer to HBA context object. * @hbqno: HBQ number. * @count: Number of HBQ buffers to be posted. * * This function is called with no lock held to post more hbq buffers to the * given HBQ. The function returns the number of HBQ buffers successfully * posted. **/ static int lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count) { uint32_t i, posted = 0; unsigned long flags; struct hbq_dmabuf *hbq_buffer; LIST_HEAD(hbq_buf_list); if (!phba->hbqs[hbqno].hbq_alloc_buffer) return 0; if ((phba->hbqs[hbqno].buffer_count + count) > lpfc_hbq_defs[hbqno]->entry_count) count = lpfc_hbq_defs[hbqno]->entry_count - phba->hbqs[hbqno].buffer_count; if (!count) return 0; /* Allocate HBQ entries */ for (i = 0; i < count; i++) { hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba); if (!hbq_buffer) break; list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list); } /* Check whether HBQ is still in use */ spin_lock_irqsave(&phba->hbalock, flags); if (!phba->hbq_in_use) goto err; while (!list_empty(&hbq_buf_list)) { list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf, dbuf.list); hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count | (hbqno << 16)); if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) { phba->hbqs[hbqno].buffer_count++; posted++; } else (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); } spin_unlock_irqrestore(&phba->hbalock, flags); return posted; err: spin_unlock_irqrestore(&phba->hbalock, flags); while (!list_empty(&hbq_buf_list)) { list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf, dbuf.list); (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); } return 0; } /** * lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware * @phba: Pointer to HBA context object. * @qno: HBQ number. * * This function posts more buffers to the HBQ. This function * is called with no lock held. The function returns the number of HBQ entries * successfully allocated. **/ int lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno) { if (phba->sli_rev == LPFC_SLI_REV4) return 0; else return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, lpfc_hbq_defs[qno]->add_count); } /** * lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ * @phba: Pointer to HBA context object. * @qno: HBQ queue number. * * This function is called from SLI initialization code path with * no lock held to post initial HBQ buffers to firmware. The * function returns the number of HBQ entries successfully allocated. **/ static int lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno) { if (phba->sli_rev == LPFC_SLI_REV4) return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, lpfc_hbq_defs[qno]->entry_count); else return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, lpfc_hbq_defs[qno]->init_count); } /** * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list * @phba: Pointer to HBA context object. * @hbqno: HBQ number. * * This function removes the first hbq buffer on an hbq list and returns a * pointer to that buffer. If it finds no buffers on the list it returns NULL. **/ static struct hbq_dmabuf * lpfc_sli_hbqbuf_get(struct list_head *rb_list) { struct lpfc_dmabuf *d_buf; list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list); if (!d_buf) return NULL; return container_of(d_buf, struct hbq_dmabuf, dbuf); } /** * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag * @phba: Pointer to HBA context object. * @tag: Tag of the hbq buffer. * * This function is called with hbalock held. This function searches * for the hbq buffer associated with the given tag in the hbq buffer * list. If it finds the hbq buffer, it returns the hbq_buffer other wise * it returns NULL. **/ static struct hbq_dmabuf * lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag) { struct lpfc_dmabuf *d_buf; struct hbq_dmabuf *hbq_buf; uint32_t hbqno; hbqno = tag >> 16; if (hbqno >= LPFC_MAX_HBQS) return NULL; spin_lock_irq(&phba->hbalock); list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) { hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); if (hbq_buf->tag == tag) { spin_unlock_irq(&phba->hbalock); return hbq_buf; } } spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT, "1803 Bad hbq tag. Data: x%x x%x\n", tag, phba->hbqs[tag >> 16].buffer_count); return NULL; } /** * lpfc_sli_free_hbq - Give back the hbq buffer to firmware * @phba: Pointer to HBA context object. * @hbq_buffer: Pointer to HBQ buffer. * * This function is called with hbalock. This function gives back * the hbq buffer to firmware. If the HBQ does not have space to * post the buffer, it will free the buffer. **/ void lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer) { uint32_t hbqno; if (hbq_buffer) { hbqno = hbq_buffer->tag >> 16; if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); } } /** * lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox * @mbxCommand: mailbox command code. * * This function is called by the mailbox event handler function to verify * that the completed mailbox command is a legitimate mailbox command. If the * completed mailbox is not known to the function, it will return MBX_SHUTDOWN * and the mailbox event handler will take the HBA offline. **/ static int lpfc_sli_chk_mbx_command(uint8_t mbxCommand) { uint8_t ret; switch (mbxCommand) { case MBX_LOAD_SM: case MBX_READ_NV: case MBX_WRITE_NV: case MBX_WRITE_VPARMS: case MBX_RUN_BIU_DIAG: case MBX_INIT_LINK: case MBX_DOWN_LINK: case MBX_CONFIG_LINK: case MBX_CONFIG_RING: case MBX_RESET_RING: case MBX_READ_CONFIG: case MBX_READ_RCONFIG: case MBX_READ_SPARM: case MBX_READ_STATUS: case MBX_READ_RPI: case MBX_READ_XRI: case MBX_READ_REV: case MBX_READ_LNK_STAT: case MBX_REG_LOGIN: case MBX_UNREG_LOGIN: case MBX_READ_LA: case MBX_CLEAR_LA: case MBX_DUMP_MEMORY: case MBX_DUMP_CONTEXT: case MBX_RUN_DIAGS: case MBX_RESTART: case MBX_UPDATE_CFG: case MBX_DOWN_LOAD: case MBX_DEL_LD_ENTRY: case MBX_RUN_PROGRAM: case MBX_SET_MASK: case MBX_SET_VARIABLE: case MBX_UNREG_D_ID: case MBX_KILL_BOARD: case MBX_CONFIG_FARP: case MBX_BEACON: case MBX_LOAD_AREA: case MBX_RUN_BIU_DIAG64: case MBX_CONFIG_PORT: case MBX_READ_SPARM64: case MBX_READ_RPI64: case MBX_REG_LOGIN64: case MBX_READ_LA64: case MBX_WRITE_WWN: case MBX_SET_DEBUG: case MBX_LOAD_EXP_ROM: case MBX_ASYNCEVT_ENABLE: case MBX_REG_VPI: case MBX_UNREG_VPI: case MBX_HEARTBEAT: case MBX_PORT_CAPABILITIES: case MBX_PORT_IOV_CONTROL: case MBX_SLI4_CONFIG: case MBX_SLI4_REQ_FTRS: case MBX_REG_FCFI: case MBX_UNREG_FCFI: case MBX_REG_VFI: case MBX_UNREG_VFI: case MBX_INIT_VPI: case MBX_INIT_VFI: case MBX_RESUME_RPI: ret = mbxCommand; break; default: ret = MBX_SHUTDOWN; break; } return ret; } /** * lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler * @phba: Pointer to HBA context object. * @pmboxq: Pointer to mailbox command. * * This is completion handler function for mailbox commands issued from * lpfc_sli_issue_mbox_wait function. This function is called by the * mailbox event handler function with no lock held. This function * will wake up thread waiting on the wait queue pointed by context1 * of the mailbox. **/ void lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) { wait_queue_head_t *pdone_q; unsigned long drvr_flag; /* * If pdone_q is empty, the driver thread gave up waiting and * continued running. */ pmboxq->mbox_flag |= LPFC_MBX_WAKE; spin_lock_irqsave(&phba->hbalock, drvr_flag); pdone_q = (wait_queue_head_t *) pmboxq->context1; if (pdone_q) wake_up_interruptible(pdone_q); spin_unlock_irqrestore(&phba->hbalock, drvr_flag); return; } /** * lpfc_sli_def_mbox_cmpl - Default mailbox completion handler * @phba: Pointer to HBA context object. * @pmb: Pointer to mailbox object. * * This function is the default mailbox completion handler. It * frees the memory resources associated with the completed mailbox * command. If the completed command is a REG_LOGIN mailbox command, * this function will issue a UREG_LOGIN to re-claim the RPI. **/ void lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_dmabuf *mp; uint16_t rpi, vpi; int rc; struct lpfc_vport *vport = pmb->vport; mp = (struct lpfc_dmabuf *) (pmb->context1); if (mp) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) && (phba->sli_rev == LPFC_SLI_REV4)) lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi); /* * If a REG_LOGIN succeeded after node is destroyed or node * is in re-discovery driver need to cleanup the RPI. */ if (!(phba->pport->load_flag & FC_UNLOADING) && pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 && !pmb->u.mb.mbxStatus) { rpi = pmb->u.mb.un.varWords[0]; vpi = pmb->u.mb.un.varRegLogin.vpi - phba->vpi_base; lpfc_unreg_login(phba, vpi, rpi, pmb); pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc != MBX_NOT_FINISHED) return; } /* Unreg VPI, if the REG_VPI succeed after VLink failure */ if ((pmb->u.mb.mbxCommand == MBX_REG_VPI) && !(phba->pport->load_flag & FC_UNLOADING) && !pmb->u.mb.mbxStatus) { lpfc_unreg_vpi(phba, pmb->u.mb.un.varRegVpi.vpi, pmb); pmb->vport = vport; pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc != MBX_NOT_FINISHED) return; } if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG) lpfc_sli4_mbox_cmd_free(phba, pmb); else mempool_free(pmb, phba->mbox_mem_pool); } /** * lpfc_sli_handle_mb_event - Handle mailbox completions from firmware * @phba: Pointer to HBA context object. * * This function is called with no lock held. This function processes all * the completed mailbox commands and gives it to upper layers. The interrupt * service routine processes mailbox completion interrupt and adds completed * mailbox commands to the mboxq_cmpl queue and signals the worker thread. * Worker thread call lpfc_sli_handle_mb_event, which will return the * completed mailbox commands in mboxq_cmpl queue to the upper layers. This * function returns the mailbox commands to the upper layer by calling the * completion handler function of each mailbox. **/ int lpfc_sli_handle_mb_event(struct lpfc_hba *phba) { MAILBOX_t *pmbox; LPFC_MBOXQ_t *pmb; int rc; LIST_HEAD(cmplq); phba->sli.slistat.mbox_event++; /* Get all completed mailboxe buffers into the cmplq */ spin_lock_irq(&phba->hbalock); list_splice_init(&phba->sli.mboxq_cmpl, &cmplq); spin_unlock_irq(&phba->hbalock); /* Get a Mailbox buffer to setup mailbox commands for callback */ do { list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list); if (pmb == NULL) break; pmbox = &pmb->u.mb; if (pmbox->mbxCommand != MBX_HEARTBEAT) { if (pmb->vport) { lpfc_debugfs_disc_trc(pmb->vport, LPFC_DISC_TRC_MBOX_VPORT, "MBOX cmpl vport: cmd:x%x mb:x%x x%x", (uint32_t)pmbox->mbxCommand, pmbox->un.varWords[0], pmbox->un.varWords[1]); } else { lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_MBOX, "MBOX cmpl: cmd:x%x mb:x%x x%x", (uint32_t)pmbox->mbxCommand, pmbox->un.varWords[0], pmbox->un.varWords[1]); } } /* * It is a fatal error if unknown mbox command completion. */ if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) == MBX_SHUTDOWN) { /* Unknown mailbox command compl */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):0323 Unknown Mailbox command " "x%x (x%x) Cmpl\n", pmb->vport ? pmb->vport->vpi : 0, pmbox->mbxCommand, lpfc_sli4_mbox_opcode_get(phba, pmb)); phba->link_state = LPFC_HBA_ERROR; phba->work_hs = HS_FFER3; lpfc_handle_eratt(phba); continue; } if (pmbox->mbxStatus) { phba->sli.slistat.mbox_stat_err++; if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) { /* Mbox cmd cmpl error - RETRYing */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0305 Mbox cmd cmpl " "error - RETRYing Data: x%x " "(x%x) x%x x%x x%x\n", pmb->vport ? pmb->vport->vpi :0, pmbox->mbxCommand, lpfc_sli4_mbox_opcode_get(phba, pmb), pmbox->mbxStatus, pmbox->un.varWords[0], pmb->vport->port_state); pmbox->mbxStatus = 0; pmbox->mbxOwner = OWN_HOST; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc != MBX_NOT_FINISHED) continue; } } /* Mailbox cmd Cmpl */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0307 Mailbox cmd x%x (x%x) Cmpl x%p " "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n", pmb->vport ? pmb->vport->vpi : 0, pmbox->mbxCommand, lpfc_sli4_mbox_opcode_get(phba, pmb), pmb->mbox_cmpl, *((uint32_t *) pmbox), pmbox->un.varWords[0], pmbox->un.varWords[1], pmbox->un.varWords[2], pmbox->un.varWords[3], pmbox->un.varWords[4], pmbox->un.varWords[5], pmbox->un.varWords[6], pmbox->un.varWords[7]); if (pmb->mbox_cmpl) pmb->mbox_cmpl(phba,pmb); } while (1); return 0; } /** * lpfc_sli_get_buff - Get the buffer associated with the buffer tag * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @tag: buffer tag. * * This function is called with no lock held. When QUE_BUFTAG_BIT bit * is set in the tag the buffer is posted for a particular exchange, * the function will return the buffer without replacing the buffer. * If the buffer is for unsolicited ELS or CT traffic, this function * returns the buffer and also posts another buffer to the firmware. **/ static struct lpfc_dmabuf * lpfc_sli_get_buff(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint32_t tag) { struct hbq_dmabuf *hbq_entry; if (tag & QUE_BUFTAG_BIT) return lpfc_sli_ring_taggedbuf_get(phba, pring, tag); hbq_entry = lpfc_sli_hbqbuf_find(phba, tag); if (!hbq_entry) return NULL; return &hbq_entry->dbuf; } /** * lpfc_complete_unsol_iocb - Complete an unsolicited sequence * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @saveq: Pointer to the iocbq struct representing the sequence starting frame. * @fch_r_ctl: the r_ctl for the first frame of the sequence. * @fch_type: the type for the first frame of the sequence. * * This function is called with no lock held. This function uses the r_ctl and * type of the received sequence to find the correct callback function to call * to process the sequence. **/ static int lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *saveq, uint32_t fch_r_ctl, uint32_t fch_type) { int i; /* unSolicited Responses */ if (pring->prt[0].profile) { if (pring->prt[0].lpfc_sli_rcv_unsol_event) (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq); return 1; } /* We must search, based on rctl / type for the right routine */ for (i = 0; i < pring->num_mask; i++) { if ((pring->prt[i].rctl == fch_r_ctl) && (pring->prt[i].type == fch_type)) { if (pring->prt[i].lpfc_sli_rcv_unsol_event) (pring->prt[i].lpfc_sli_rcv_unsol_event) (phba, pring, saveq); return 1; } } return 0; } /** * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @saveq: Pointer to the unsolicited iocb. * * This function is called with no lock held by the ring event handler * when there is an unsolicited iocb posted to the response ring by the * firmware. This function gets the buffer associated with the iocbs * and calls the event handler for the ring. This function handles both * qring buffers and hbq buffers. * When the function returns 1 the caller can free the iocb object otherwise * upper layer functions will free the iocb objects. **/ static int lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *saveq) { IOCB_t * irsp; WORD5 * w5p; uint32_t Rctl, Type; uint32_t match; struct lpfc_iocbq *iocbq; struct lpfc_dmabuf *dmzbuf; match = 0; irsp = &(saveq->iocb); if (irsp->ulpCommand == CMD_ASYNC_STATUS) { if (pring->lpfc_sli_rcv_async_status) pring->lpfc_sli_rcv_async_status(phba, pring, saveq); else lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0316 Ring %d handler: unexpected " "ASYNC_STATUS iocb received evt_code " "0x%x\n", pring->ringno, irsp->un.asyncstat.evt_code); return 1; } if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) && (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) { if (irsp->ulpBdeCount > 0) { dmzbuf = lpfc_sli_get_buff(phba, pring, irsp->un.ulpWord[3]); lpfc_in_buf_free(phba, dmzbuf); } if (irsp->ulpBdeCount > 1) { dmzbuf = lpfc_sli_get_buff(phba, pring, irsp->unsli3.sli3Words[3]); lpfc_in_buf_free(phba, dmzbuf); } if (irsp->ulpBdeCount > 2) { dmzbuf = lpfc_sli_get_buff(phba, pring, irsp->unsli3.sli3Words[7]); lpfc_in_buf_free(phba, dmzbuf); } return 1; } if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { if (irsp->ulpBdeCount != 0) { saveq->context2 = lpfc_sli_get_buff(phba, pring, irsp->un.ulpWord[3]); if (!saveq->context2) lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0341 Ring %d Cannot find buffer for " "an unsolicited iocb. tag 0x%x\n", pring->ringno, irsp->un.ulpWord[3]); } if (irsp->ulpBdeCount == 2) { saveq->context3 = lpfc_sli_get_buff(phba, pring, irsp->unsli3.sli3Words[7]); if (!saveq->context3) lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0342 Ring %d Cannot find buffer for an" " unsolicited iocb. tag 0x%x\n", pring->ringno, irsp->unsli3.sli3Words[7]); } list_for_each_entry(iocbq, &saveq->list, list) { irsp = &(iocbq->iocb); if (irsp->ulpBdeCount != 0) { iocbq->context2 = lpfc_sli_get_buff(phba, pring, irsp->un.ulpWord[3]); if (!iocbq->context2) lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0343 Ring %d Cannot find " "buffer for an unsolicited iocb" ". tag 0x%x\n", pring->ringno, irsp->un.ulpWord[3]); } if (irsp->ulpBdeCount == 2) { iocbq->context3 = lpfc_sli_get_buff(phba, pring, irsp->unsli3.sli3Words[7]); if (!iocbq->context3) lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0344 Ring %d Cannot find " "buffer for an unsolicited " "iocb. tag 0x%x\n", pring->ringno, irsp->unsli3.sli3Words[7]); } } } if (irsp->ulpBdeCount != 0 && (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX || irsp->ulpStatus == IOSTAT_INTERMED_RSP)) { int found = 0; /* search continue save q for same XRI */ list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) { if (iocbq->iocb.ulpContext == saveq->iocb.ulpContext) { list_add_tail(&saveq->list, &iocbq->list); found = 1; break; } } if (!found) list_add_tail(&saveq->clist, &pring->iocb_continue_saveq); if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) { list_del_init(&iocbq->clist); saveq = iocbq; irsp = &(saveq->iocb); } else return 0; } if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) || (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) { Rctl = FC_RCTL_ELS_REQ; Type = FC_TYPE_ELS; } else { w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]); Rctl = w5p->hcsw.Rctl; Type = w5p->hcsw.Type; /* Firmware Workaround */ if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) && (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX || irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) { Rctl = FC_RCTL_ELS_REQ; Type = FC_TYPE_ELS; w5p->hcsw.Rctl = Rctl; w5p->hcsw.Type = Type; } } if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type)) lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0313 Ring %d handler: unexpected Rctl x%x " "Type x%x received\n", pring->ringno, Rctl, Type); return 1; } /** * lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @prspiocb: Pointer to response iocb object. * * This function looks up the iocb_lookup table to get the command iocb * corresponding to the given response iocb using the iotag of the * response iocb. This function is called with the hbalock held. * This function returns the command iocb object if it finds the command * iocb else returns NULL. **/ static struct lpfc_iocbq * lpfc_sli_iocbq_lookup(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *prspiocb) { struct lpfc_iocbq *cmd_iocb = NULL; uint16_t iotag; iotag = prspiocb->iocb.ulpIoTag; if (iotag != 0 && iotag <= phba->sli.last_iotag) { cmd_iocb = phba->sli.iocbq_lookup[iotag]; list_del_init(&cmd_iocb->list); pring->txcmplq_cnt--; return cmd_iocb; } lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0317 iotag x%x is out off " "range: max iotag x%x wd0 x%x\n", iotag, phba->sli.last_iotag, *(((uint32_t *) &prspiocb->iocb) + 7)); return NULL; } /** * lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @iotag: IOCB tag. * * This function looks up the iocb_lookup table to get the command iocb * corresponding to the given iotag. This function is called with the * hbalock held. * This function returns the command iocb object if it finds the command * iocb else returns NULL. **/ static struct lpfc_iocbq * lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint16_t iotag) { struct lpfc_iocbq *cmd_iocb; if (iotag != 0 && iotag <= phba->sli.last_iotag) { cmd_iocb = phba->sli.iocbq_lookup[iotag]; list_del_init(&cmd_iocb->list); pring->txcmplq_cnt--; return cmd_iocb; } lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0372 iotag x%x is out off range: max iotag (x%x)\n", iotag, phba->sli.last_iotag); return NULL; } /** * lpfc_sli_process_sol_iocb - process solicited iocb completion * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @saveq: Pointer to the response iocb to be processed. * * This function is called by the ring event handler for non-fcp * rings when there is a new response iocb in the response ring. * The caller is not required to hold any locks. This function * gets the command iocb associated with the response iocb and * calls the completion handler for the command iocb. If there * is no completion handler, the function will free the resources * associated with command iocb. If the response iocb is for * an already aborted command iocb, the status of the completion * is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED. * This function always returns 1. **/ static int lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *saveq) { struct lpfc_iocbq *cmdiocbp; int rc = 1; unsigned long iflag; /* Based on the iotag field, get the cmd IOCB from the txcmplq */ spin_lock_irqsave(&phba->hbalock, iflag); cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq); spin_unlock_irqrestore(&phba->hbalock, iflag); if (cmdiocbp) { if (cmdiocbp->iocb_cmpl) { /* * If an ELS command failed send an event to mgmt * application. */ if (saveq->iocb.ulpStatus && (pring->ringno == LPFC_ELS_RING) && (cmdiocbp->iocb.ulpCommand == CMD_ELS_REQUEST64_CR)) lpfc_send_els_failure_event(phba, cmdiocbp, saveq); /* * Post all ELS completions to the worker thread. * All other are passed to the completion callback. */ if (pring->ringno == LPFC_ELS_RING) { if ((phba->sli_rev < LPFC_SLI_REV4) && (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED)) { spin_lock_irqsave(&phba->hbalock, iflag); cmdiocbp->iocb_flag &= ~LPFC_DRIVER_ABORTED; spin_unlock_irqrestore(&phba->hbalock, iflag); saveq->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; saveq->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED; /* Firmware could still be in progress * of DMAing payload, so don't free data * buffer till after a hbeat. */ spin_lock_irqsave(&phba->hbalock, iflag); saveq->iocb_flag |= LPFC_DELAY_MEM_FREE; spin_unlock_irqrestore(&phba->hbalock, iflag); } if (phba->sli_rev == LPFC_SLI_REV4) { if (saveq->iocb_flag & LPFC_EXCHANGE_BUSY) { /* Set cmdiocb flag for the * exchange busy so sgl (xri) * will not be released until * the abort xri is received * from hba. */ spin_lock_irqsave( &phba->hbalock, iflag); cmdiocbp->iocb_flag |= LPFC_EXCHANGE_BUSY; spin_unlock_irqrestore( &phba->hbalock, iflag); } if (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED) { /* * Clear LPFC_DRIVER_ABORTED * bit in case it was driver * initiated abort. */ spin_lock_irqsave( &phba->hbalock, iflag); cmdiocbp->iocb_flag &= ~LPFC_DRIVER_ABORTED; spin_unlock_irqrestore( &phba->hbalock, iflag); cmdiocbp->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; cmdiocbp->iocb.un.ulpWord[4] = IOERR_ABORT_REQUESTED; /* * For SLI4, irsiocb contains * NO_XRI in sli_xritag, it * shall not affect releasing * sgl (xri) process. */ saveq->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; saveq->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED; spin_lock_irqsave( &phba->hbalock, iflag); saveq->iocb_flag |= LPFC_DELAY_MEM_FREE; spin_unlock_irqrestore( &phba->hbalock, iflag); } } } (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); } else lpfc_sli_release_iocbq(phba, cmdiocbp); } else { /* * Unknown initiating command based on the response iotag. * This could be the case on the ELS ring because of * lpfc_els_abort(). */ if (pring->ringno != LPFC_ELS_RING) { /* * Ring handler: unexpected completion IoTag * */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0322 Ring %d handler: " "unexpected completion IoTag x%x " "Data: x%x x%x x%x x%x\n", pring->ringno, saveq->iocb.ulpIoTag, saveq->iocb.ulpStatus, saveq->iocb.un.ulpWord[4], saveq->iocb.ulpCommand, saveq->iocb.ulpContext); } } return rc; } /** * lpfc_sli_rsp_pointers_error - Response ring pointer error handler * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function is called from the iocb ring event handlers when * put pointer is ahead of the get pointer for a ring. This function signal * an error attention condition to the worker thread and the worker * thread will transition the HBA to offline state. **/ static void lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; /* * Ring handler: portRspPut is bigger than * rsp ring */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0312 Ring %d handler: portRspPut %d " "is bigger than rsp ring %d\n", pring->ringno, le32_to_cpu(pgp->rspPutInx), pring->numRiocb); phba->link_state = LPFC_HBA_ERROR; /* * All error attention handlers are posted to * worker thread */ phba->work_ha |= HA_ERATT; phba->work_hs = HS_FFER3; lpfc_worker_wake_up(phba); return; } /** * lpfc_poll_eratt - Error attention polling timer timeout handler * @ptr: Pointer to address of HBA context object. * * This function is invoked by the Error Attention polling timer when the * timer times out. It will check the SLI Error Attention register for * possible attention events. If so, it will post an Error Attention event * and wake up worker thread to process it. Otherwise, it will set up the * Error Attention polling timer for the next poll. **/ void lpfc_poll_eratt(unsigned long ptr) { struct lpfc_hba *phba; uint32_t eratt = 0; phba = (struct lpfc_hba *)ptr; /* Check chip HA register for error event */ eratt = lpfc_sli_check_eratt(phba); if (eratt) /* Tell the worker thread there is work to do */ lpfc_worker_wake_up(phba); else /* Restart the timer for next eratt poll */ mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL); return; } /** * lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @mask: Host attention register mask for this ring. * * This function is called from the interrupt context when there is a ring * event for the fcp ring. The caller does not hold any lock. * The function processes each response iocb in the response ring until it * finds an iocb with LE bit set and chains all the iocbs upto the iocb with * LE bit set. The function will call the completion handler of the command iocb * if the response iocb indicates a completion for a command iocb or it is * an abort completion. The function will call lpfc_sli_process_unsol_iocb * function if this is an unsolicited iocb. * This routine presumes LPFC_FCP_RING handling and doesn't bother * to check it explicitly. */ int lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint32_t mask) { struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; IOCB_t *irsp = NULL; IOCB_t *entry = NULL; struct lpfc_iocbq *cmdiocbq = NULL; struct lpfc_iocbq rspiocbq; uint32_t status; uint32_t portRspPut, portRspMax; int rc = 1; lpfc_iocb_type type; unsigned long iflag; uint32_t rsp_cmpl = 0; spin_lock_irqsave(&phba->hbalock, iflag); pring->stats.iocb_event++; /* * The next available response entry should never exceed the maximum * entries. If it does, treat it as an adapter hardware error. */ portRspMax = pring->numRiocb; portRspPut = le32_to_cpu(pgp->rspPutInx); if (unlikely(portRspPut >= portRspMax)) { lpfc_sli_rsp_pointers_error(phba, pring); spin_unlock_irqrestore(&phba->hbalock, iflag); return 1; } if (phba->fcp_ring_in_use) { spin_unlock_irqrestore(&phba->hbalock, iflag); return 1; } else phba->fcp_ring_in_use = 1; rmb(); while (pring->rspidx != portRspPut) { /* * Fetch an entry off the ring and copy it into a local data * structure. The copy involves a byte-swap since the * network byte order and pci byte orders are different. */ entry = lpfc_resp_iocb(phba, pring); phba->last_completion_time = jiffies; if (++pring->rspidx >= portRspMax) pring->rspidx = 0; lpfc_sli_pcimem_bcopy((uint32_t *) entry, (uint32_t *) &rspiocbq.iocb, phba->iocb_rsp_size); INIT_LIST_HEAD(&(rspiocbq.list)); irsp = &rspiocbq.iocb; type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK); pring->stats.iocb_rsp++; rsp_cmpl++; if (unlikely(irsp->ulpStatus)) { /* * If resource errors reported from HBA, reduce * queuedepths of the SCSI device. */ if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) { spin_unlock_irqrestore(&phba->hbalock, iflag); phba->lpfc_rampdown_queue_depth(phba); spin_lock_irqsave(&phba->hbalock, iflag); } /* Rsp ring error: IOCB */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0336 Rsp Ring %d error: IOCB Data: " "x%x x%x x%x x%x x%x x%x x%x x%x\n", pring->ringno, irsp->un.ulpWord[0], irsp->un.ulpWord[1], irsp->un.ulpWord[2], irsp->un.ulpWord[3], irsp->un.ulpWord[4], irsp->un.ulpWord[5], *(uint32_t *)&irsp->un1, *((uint32_t *)&irsp->un1 + 1)); } switch (type) { case LPFC_ABORT_IOCB: case LPFC_SOL_IOCB: /* * Idle exchange closed via ABTS from port. No iocb * resources need to be recovered. */ if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) { lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0333 IOCB cmd 0x%x" " processed. Skipping" " completion\n", irsp->ulpCommand); break; } cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring, &rspiocbq); if (unlikely(!cmdiocbq)) break; if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED; if (cmdiocbq->iocb_cmpl) { spin_unlock_irqrestore(&phba->hbalock, iflag); (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &rspiocbq); spin_lock_irqsave(&phba->hbalock, iflag); } break; case LPFC_UNSOL_IOCB: spin_unlock_irqrestore(&phba->hbalock, iflag); lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq); spin_lock_irqsave(&phba->hbalock, iflag); break; default: if (irsp->ulpCommand == CMD_ADAPTER_MSG) { char adaptermsg[LPFC_MAX_ADPTMSG]; memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); memcpy(&adaptermsg[0], (uint8_t *) irsp, MAX_MSG_DATA); dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s\n", phba->brd_no, adaptermsg); } else { /* Unknown IOCB command */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0334 Unknown IOCB command " "Data: x%x, x%x x%x x%x x%x\n", type, irsp->ulpCommand, irsp->ulpStatus, irsp->ulpIoTag, irsp->ulpContext); } break; } /* * The response IOCB has been processed. Update the ring * pointer in SLIM. If the port response put pointer has not * been updated, sync the pgp->rspPutInx and fetch the new port * response put pointer. */ writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx); if (pring->rspidx == portRspPut) portRspPut = le32_to_cpu(pgp->rspPutInx); } if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) { pring->stats.iocb_rsp_full++; status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); writel(status, phba->CAregaddr); readl(phba->CAregaddr); } if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { pring->flag &= ~LPFC_CALL_RING_AVAILABLE; pring->stats.iocb_cmd_empty++; /* Force update of the local copy of cmdGetInx */ pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); lpfc_sli_resume_iocb(phba, pring); if ((pring->lpfc_sli_cmd_available)) (pring->lpfc_sli_cmd_available) (phba, pring); } phba->fcp_ring_in_use = 0; spin_unlock_irqrestore(&phba->hbalock, iflag); return rc; } /** * lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @rspiocbp: Pointer to driver response IOCB object. * * This function is called from the worker thread when there is a slow-path * response IOCB to process. This function chains all the response iocbs until * seeing the iocb with the LE bit set. The function will call * lpfc_sli_process_sol_iocb function if the response iocb indicates a * completion of a command iocb. The function will call the * lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb. * The function frees the resources or calls the completion handler if this * iocb is an abort completion. The function returns NULL when the response * iocb has the LE bit set and all the chained iocbs are processed, otherwise * this function shall chain the iocb on to the iocb_continueq and return the * response iocb passed in. **/ static struct lpfc_iocbq * lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *rspiocbp) { struct lpfc_iocbq *saveq; struct lpfc_iocbq *cmdiocbp; struct lpfc_iocbq *next_iocb; IOCB_t *irsp = NULL; uint32_t free_saveq; uint8_t iocb_cmd_type; lpfc_iocb_type type; unsigned long iflag; int rc; spin_lock_irqsave(&phba->hbalock, iflag); /* First add the response iocb to the countinueq list */ list_add_tail(&rspiocbp->list, &(pring->iocb_continueq)); pring->iocb_continueq_cnt++; /* Now, determine whetehr the list is completed for processing */ irsp = &rspiocbp->iocb; if (irsp->ulpLe) { /* * By default, the driver expects to free all resources * associated with this iocb completion. */ free_saveq = 1; saveq = list_get_first(&pring->iocb_continueq, struct lpfc_iocbq, list); irsp = &(saveq->iocb); list_del_init(&pring->iocb_continueq); pring->iocb_continueq_cnt = 0; pring->stats.iocb_rsp++; /* * If resource errors reported from HBA, reduce * queuedepths of the SCSI device. */ if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) { spin_unlock_irqrestore(&phba->hbalock, iflag); phba->lpfc_rampdown_queue_depth(phba); spin_lock_irqsave(&phba->hbalock, iflag); } if (irsp->ulpStatus) { /* Rsp ring error: IOCB */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0328 Rsp Ring %d error: " "IOCB Data: " "x%x x%x x%x x%x " "x%x x%x x%x x%x " "x%x x%x x%x x%x " "x%x x%x x%x x%x\n", pring->ringno, irsp->un.ulpWord[0], irsp->un.ulpWord[1], irsp->un.ulpWord[2], irsp->un.ulpWord[3], irsp->un.ulpWord[4], irsp->un.ulpWord[5], *(((uint32_t *) irsp) + 6), *(((uint32_t *) irsp) + 7), *(((uint32_t *) irsp) + 8), *(((uint32_t *) irsp) + 9), *(((uint32_t *) irsp) + 10), *(((uint32_t *) irsp) + 11), *(((uint32_t *) irsp) + 12), *(((uint32_t *) irsp) + 13), *(((uint32_t *) irsp) + 14), *(((uint32_t *) irsp) + 15)); } /* * Fetch the IOCB command type and call the correct completion * routine. Solicited and Unsolicited IOCBs on the ELS ring * get freed back to the lpfc_iocb_list by the discovery * kernel thread. */ iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK; type = lpfc_sli_iocb_cmd_type(iocb_cmd_type); switch (type) { case LPFC_SOL_IOCB: spin_unlock_irqrestore(&phba->hbalock, iflag); rc = lpfc_sli_process_sol_iocb(phba, pring, saveq); spin_lock_irqsave(&phba->hbalock, iflag); break; case LPFC_UNSOL_IOCB: spin_unlock_irqrestore(&phba->hbalock, iflag); rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq); spin_lock_irqsave(&phba->hbalock, iflag); if (!rc) free_saveq = 0; break; case LPFC_ABORT_IOCB: cmdiocbp = NULL; if (irsp->ulpCommand != CMD_XRI_ABORTED_CX) cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq); if (cmdiocbp) { /* Call the specified completion routine */ if (cmdiocbp->iocb_cmpl) { spin_unlock_irqrestore(&phba->hbalock, iflag); (cmdiocbp->iocb_cmpl)(phba, cmdiocbp, saveq); spin_lock_irqsave(&phba->hbalock, iflag); } else __lpfc_sli_release_iocbq(phba, cmdiocbp); } break; case LPFC_UNKNOWN_IOCB: if (irsp->ulpCommand == CMD_ADAPTER_MSG) { char adaptermsg[LPFC_MAX_ADPTMSG]; memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); memcpy(&adaptermsg[0], (uint8_t *)irsp, MAX_MSG_DATA); dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s\n", phba->brd_no, adaptermsg); } else { /* Unknown IOCB command */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0335 Unknown IOCB " "command Data: x%x " "x%x x%x x%x\n", irsp->ulpCommand, irsp->ulpStatus, irsp->ulpIoTag, irsp->ulpContext); } break; } if (free_saveq) { list_for_each_entry_safe(rspiocbp, next_iocb, &saveq->list, list) { list_del(&rspiocbp->list); __lpfc_sli_release_iocbq(phba, rspiocbp); } __lpfc_sli_release_iocbq(phba, saveq); } rspiocbp = NULL; } spin_unlock_irqrestore(&phba->hbalock, iflag); return rspiocbp; } /** * lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @mask: Host attention register mask for this ring. * * This routine wraps the actual slow_ring event process routine from the * API jump table function pointer from the lpfc_hba struct. **/ void lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint32_t mask) { phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask); } /** * lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @mask: Host attention register mask for this ring. * * This function is called from the worker thread when there is a ring event * for non-fcp rings. The caller does not hold any lock. The function will * remove each response iocb in the response ring and calls the handle * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it. **/ static void lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint32_t mask) { struct lpfc_pgp *pgp; IOCB_t *entry; IOCB_t *irsp = NULL; struct lpfc_iocbq *rspiocbp = NULL; uint32_t portRspPut, portRspMax; unsigned long iflag; uint32_t status; pgp = &phba->port_gp[pring->ringno]; spin_lock_irqsave(&phba->hbalock, iflag); pring->stats.iocb_event++; /* * The next available response entry should never exceed the maximum * entries. If it does, treat it as an adapter hardware error. */ portRspMax = pring->numRiocb; portRspPut = le32_to_cpu(pgp->rspPutInx); if (portRspPut >= portRspMax) { /* * Ring handler: portRspPut is bigger than * rsp ring */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0303 Ring %d handler: portRspPut %d " "is bigger than rsp ring %d\n", pring->ringno, portRspPut, portRspMax); phba->link_state = LPFC_HBA_ERROR; spin_unlock_irqrestore(&phba->hbalock, iflag); phba->work_hs = HS_FFER3; lpfc_handle_eratt(phba); return; } rmb(); while (pring->rspidx != portRspPut) { /* * Build a completion list and call the appropriate handler. * The process is to get the next available response iocb, get * a free iocb from the list, copy the response data into the * free iocb, insert to the continuation list, and update the * next response index to slim. This process makes response * iocb's in the ring available to DMA as fast as possible but * pays a penalty for a copy operation. Since the iocb is * only 32 bytes, this penalty is considered small relative to * the PCI reads for register values and a slim write. When * the ulpLe field is set, the entire Command has been * received. */ entry = lpfc_resp_iocb(phba, pring); phba->last_completion_time = jiffies; rspiocbp = __lpfc_sli_get_iocbq(phba); if (rspiocbp == NULL) { printk(KERN_ERR "%s: out of buffers! Failing " "completion.\n", __func__); break; } lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, phba->iocb_rsp_size); irsp = &rspiocbp->iocb; if (++pring->rspidx >= portRspMax) pring->rspidx = 0; if (pring->ringno == LPFC_ELS_RING) { lpfc_debugfs_slow_ring_trc(phba, "IOCB rsp ring: wd4:x%08x wd6:x%08x wd7:x%08x", *(((uint32_t *) irsp) + 4), *(((uint32_t *) irsp) + 6), *(((uint32_t *) irsp) + 7)); } writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx); spin_unlock_irqrestore(&phba->hbalock, iflag); /* Handle the response IOCB */ rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp); spin_lock_irqsave(&phba->hbalock, iflag); /* * If the port response put pointer has not been updated, sync * the pgp->rspPutInx in the MAILBOX_tand fetch the new port * response put pointer. */ if (pring->rspidx == portRspPut) { portRspPut = le32_to_cpu(pgp->rspPutInx); } } /* while (pring->rspidx != portRspPut) */ if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) { /* At least one response entry has been freed */ pring->stats.iocb_rsp_full++; /* SET RxRE_RSP in Chip Att register */ status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); writel(status, phba->CAregaddr); readl(phba->CAregaddr); /* flush */ } if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { pring->flag &= ~LPFC_CALL_RING_AVAILABLE; pring->stats.iocb_cmd_empty++; /* Force update of the local copy of cmdGetInx */ pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); lpfc_sli_resume_iocb(phba, pring); if ((pring->lpfc_sli_cmd_available)) (pring->lpfc_sli_cmd_available) (phba, pring); } spin_unlock_irqrestore(&phba->hbalock, iflag); return; } /** * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @mask: Host attention register mask for this ring. * * This function is called from the worker thread when there is a pending * ELS response iocb on the driver internal slow-path response iocb worker * queue. The caller does not hold any lock. The function will remove each * response iocb from the response worker queue and calls the handle * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it. **/ static void lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint32_t mask) { struct lpfc_iocbq *irspiocbq; struct hbq_dmabuf *dmabuf; struct lpfc_cq_event *cq_event; unsigned long iflag; spin_lock_irqsave(&phba->hbalock, iflag); phba->hba_flag &= ~HBA_SP_QUEUE_EVT; spin_unlock_irqrestore(&phba->hbalock, iflag); while (!list_empty(&phba->sli4_hba.sp_queue_event)) { /* Get the response iocb from the head of work queue */ spin_lock_irqsave(&phba->hbalock, iflag); list_remove_head(&phba->sli4_hba.sp_queue_event, cq_event, struct lpfc_cq_event, list); spin_unlock_irqrestore(&phba->hbalock, iflag); switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) { case CQE_CODE_COMPL_WQE: irspiocbq = container_of(cq_event, struct lpfc_iocbq, cq_event); /* Translate ELS WCQE to response IOCBQ */ irspiocbq = lpfc_sli4_els_wcqe_to_rspiocbq(phba, irspiocbq); if (irspiocbq) lpfc_sli_sp_handle_rspiocb(phba, pring, irspiocbq); break; case CQE_CODE_RECEIVE: dmabuf = container_of(cq_event, struct hbq_dmabuf, cq_event); lpfc_sli4_handle_received_buffer(phba, dmabuf); break; default: break; } } } /** * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * * This function aborts all iocbs in the given ring and frees all the iocb * objects in txq. This function issues an abort iocb for all the iocb commands * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before * the return of this function. The caller is not required to hold any locks. **/ void lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) { LIST_HEAD(completions); struct lpfc_iocbq *iocb, *next_iocb; if (pring->ringno == LPFC_ELS_RING) { lpfc_fabric_abort_hba(phba); } /* Error everything on txq and txcmplq * First do the txq. */ spin_lock_irq(&phba->hbalock); list_splice_init(&pring->txq, &completions); pring->txq_cnt = 0; /* Next issue ABTS for everything on the txcmplq */ list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) lpfc_sli_issue_abort_iotag(phba, pring, iocb); spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } /** * lpfc_sli_flush_fcp_rings - flush all iocbs in the fcp ring * @phba: Pointer to HBA context object. * * This function flushes all iocbs in the fcp ring and frees all the iocb * objects in txq and txcmplq. This function will not issue abort iocbs * for all the iocb commands in txcmplq, they will just be returned with * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI * slot has been permanently disabled. **/ void lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba) { LIST_HEAD(txq); LIST_HEAD(txcmplq); struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; /* Currently, only one fcp ring */ pring = &psli->ring[psli->fcp_ring]; spin_lock_irq(&phba->hbalock); /* Retrieve everything on txq */ list_splice_init(&pring->txq, &txq); pring->txq_cnt = 0; /* Retrieve everything on the txcmplq */ list_splice_init(&pring->txcmplq, &txcmplq); pring->txcmplq_cnt = 0; spin_unlock_irq(&phba->hbalock); /* Flush the txq */ lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT, IOERR_SLI_DOWN); /* Flush the txcmpq */ lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT, IOERR_SLI_DOWN); } /** * lpfc_sli_brdready_s3 - Check for sli3 host ready status * @phba: Pointer to HBA context object. * @mask: Bit mask to be checked. * * This function reads the host status register and compares * with the provided bit mask to check if HBA completed * the restart. This function will wait in a loop for the * HBA to complete restart. If the HBA does not restart within * 15 iterations, the function will reset the HBA again. The * function returns 1 when HBA fail to restart otherwise returns * zero. **/ static int lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask) { uint32_t status; int i = 0; int retval = 0; /* Read the HBA Host Status Register */ status = readl(phba->HSregaddr); /* * Check status register every 100ms for 5 retries, then every * 500ms for 5, then every 2.5 sec for 5, then reset board and * every 2.5 sec for 4. * Break our of the loop if errors occurred during init. */ while (((status & mask) != mask) && !(status & HS_FFERM) && i++ < 20) { if (i <= 5) msleep(10); else if (i <= 10) msleep(500); else msleep(2500); if (i == 15) { /* Do post */ phba->pport->port_state = LPFC_VPORT_UNKNOWN; lpfc_sli_brdrestart(phba); } /* Read the HBA Host Status Register */ status = readl(phba->HSregaddr); } /* Check to see if any errors occurred during init */ if ((status & HS_FFERM) || (i >= 20)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2751 Adapter failed to restart, " "status reg x%x, FW Data: A8 x%x AC x%x\n", status, readl(phba->MBslimaddr + 0xa8), readl(phba->MBslimaddr + 0xac)); phba->link_state = LPFC_HBA_ERROR; retval = 1; } return retval; } /** * lpfc_sli_brdready_s4 - Check for sli4 host ready status * @phba: Pointer to HBA context object. * @mask: Bit mask to be checked. * * This function checks the host status register to check if HBA is * ready. This function will wait in a loop for the HBA to be ready * If the HBA is not ready , the function will will reset the HBA PCI * function again. The function returns 1 when HBA fail to be ready * otherwise returns zero. **/ static int lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask) { uint32_t status; int retval = 0; /* Read the HBA Host Status Register */ status = lpfc_sli4_post_status_check(phba); if (status) { phba->pport->port_state = LPFC_VPORT_UNKNOWN; lpfc_sli_brdrestart(phba); status = lpfc_sli4_post_status_check(phba); } /* Check to see if any errors occurred during init */ if (status) { phba->link_state = LPFC_HBA_ERROR; retval = 1; } else phba->sli4_hba.intr_enable = 0; return retval; } /** * lpfc_sli_brdready - Wrapper func for checking the hba readyness * @phba: Pointer to HBA context object. * @mask: Bit mask to be checked. * * This routine wraps the actual SLI3 or SLI4 hba readyness check routine * from the API jump table function pointer from the lpfc_hba struct. **/ int lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask) { return phba->lpfc_sli_brdready(phba, mask); } #define BARRIER_TEST_PATTERN (0xdeadbeef) /** * lpfc_reset_barrier - Make HBA ready for HBA reset * @phba: Pointer to HBA context object. * * This function is called before resetting an HBA. This * function requests HBA to quiesce DMAs before a reset. **/ void lpfc_reset_barrier(struct lpfc_hba *phba) { uint32_t __iomem *resp_buf; uint32_t __iomem *mbox_buf; volatile uint32_t mbox; uint32_t hc_copy; int i; uint8_t hdrtype; pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype); if (hdrtype != 0x80 || (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID && FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID)) return; /* * Tell the other part of the chip to suspend temporarily all * its DMA activity. */ resp_buf = phba->MBslimaddr; /* Disable the error attention */ hc_copy = readl(phba->HCregaddr); writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr); readl(phba->HCregaddr); /* flush */ phba->link_flag |= LS_IGNORE_ERATT; if (readl(phba->HAregaddr) & HA_ERATT) { /* Clear Chip error bit */ writel(HA_ERATT, phba->HAregaddr); phba->pport->stopped = 1; } mbox = 0; ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD; ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP; writel(BARRIER_TEST_PATTERN, (resp_buf + 1)); mbox_buf = phba->MBslimaddr; writel(mbox, mbox_buf); for (i = 0; readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++) mdelay(1); if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) { if (phba->sli.sli_flag & LPFC_SLI_ACTIVE || phba->pport->stopped) goto restore_hc; else goto clear_errat; } ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST; for (i = 0; readl(resp_buf) != mbox && i < 500; i++) mdelay(1); clear_errat: while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500) mdelay(1); if (readl(phba->HAregaddr) & HA_ERATT) { writel(HA_ERATT, phba->HAregaddr); phba->pport->stopped = 1; } restore_hc: phba->link_flag &= ~LS_IGNORE_ERATT; writel(hc_copy, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } /** * lpfc_sli_brdkill - Issue a kill_board mailbox command * @phba: Pointer to HBA context object. * * This function issues a kill_board mailbox command and waits for * the error attention interrupt. This function is called for stopping * the firmware processing. The caller is not required to hold any * locks. This function calls lpfc_hba_down_post function to free * any pending commands after the kill. The function will return 1 when it * fails to kill the board else will return 0. **/ int lpfc_sli_brdkill(struct lpfc_hba *phba) { struct lpfc_sli *psli; LPFC_MBOXQ_t *pmb; uint32_t status; uint32_t ha_copy; int retval; int i = 0; psli = &phba->sli; /* Kill HBA */ lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0329 Kill HBA Data: x%x x%x\n", phba->pport->port_state, psli->sli_flag); pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) return 1; /* Disable the error attention */ spin_lock_irq(&phba->hbalock); status = readl(phba->HCregaddr); status &= ~HC_ERINT_ENA; writel(status, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ phba->link_flag |= LS_IGNORE_ERATT; spin_unlock_irq(&phba->hbalock); lpfc_kill_board(phba, pmb); pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (retval != MBX_SUCCESS) { if (retval != MBX_BUSY) mempool_free(pmb, phba->mbox_mem_pool); lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2752 KILL_BOARD command failed retval %d\n", retval); spin_lock_irq(&phba->hbalock); phba->link_flag &= ~LS_IGNORE_ERATT; spin_unlock_irq(&phba->hbalock); return 1; } spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); mempool_free(pmb, phba->mbox_mem_pool); /* There is no completion for a KILL_BOARD mbox cmd. Check for an error * attention every 100ms for 3 seconds. If we don't get ERATT after * 3 seconds we still set HBA_ERROR state because the status of the * board is now undefined. */ ha_copy = readl(phba->HAregaddr); while ((i++ < 30) && !(ha_copy & HA_ERATT)) { mdelay(100); ha_copy = readl(phba->HAregaddr); } del_timer_sync(&psli->mbox_tmo); if (ha_copy & HA_ERATT) { writel(HA_ERATT, phba->HAregaddr); phba->pport->stopped = 1; } spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; psli->mbox_active = NULL; phba->link_flag &= ~LS_IGNORE_ERATT; spin_unlock_irq(&phba->hbalock); lpfc_hba_down_post(phba); phba->link_state = LPFC_HBA_ERROR; return ha_copy & HA_ERATT ? 0 : 1; } /** * lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA * @phba: Pointer to HBA context object. * * This function resets the HBA by writing HC_INITFF to the control * register. After the HBA resets, this function resets all the iocb ring * indices. This function disables PCI layer parity checking during * the reset. * This function returns 0 always. * The caller is not required to hold any locks. **/ int lpfc_sli_brdreset(struct lpfc_hba *phba) { struct lpfc_sli *psli; struct lpfc_sli_ring *pring; uint16_t cfg_value; int i; psli = &phba->sli; /* Reset HBA */ lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0325 Reset HBA Data: x%x x%x\n", phba->pport->port_state, psli->sli_flag); /* perform board reset */ phba->fc_eventTag = 0; phba->link_events = 0; phba->pport->fc_myDID = 0; phba->pport->fc_prevDID = 0; /* Turn off parity checking and serr during the physical reset */ pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value & ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA); /* Now toggle INITFF bit in the Host Control Register */ writel(HC_INITFF, phba->HCregaddr); mdelay(1); readl(phba->HCregaddr); /* flush */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ /* Restore PCI cmd register */ pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value); /* Initialize relevant SLI info */ for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; pring->flag = 0; pring->rspidx = 0; pring->next_cmdidx = 0; pring->local_getidx = 0; pring->cmdidx = 0; pring->missbufcnt = 0; } phba->link_state = LPFC_WARM_START; return 0; } /** * lpfc_sli4_brdreset - Reset a sli-4 HBA * @phba: Pointer to HBA context object. * * This function resets a SLI4 HBA. This function disables PCI layer parity * checking during resets the device. The caller is not required to hold * any locks. * * This function returns 0 always. **/ int lpfc_sli4_brdreset(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; uint16_t cfg_value; uint8_t qindx; /* Reset HBA */ lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0295 Reset HBA Data: x%x x%x\n", phba->pport->port_state, psli->sli_flag); /* perform board reset */ phba->fc_eventTag = 0; phba->link_events = 0; phba->pport->fc_myDID = 0; phba->pport->fc_prevDID = 0; /* Turn off parity checking and serr during the physical reset */ pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value & ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~(LPFC_PROCESS_LA); phba->fcf.fcf_flag = 0; /* Clean up the child queue list for the CQs */ list_del_init(&phba->sli4_hba.mbx_wq->list); list_del_init(&phba->sli4_hba.els_wq->list); list_del_init(&phba->sli4_hba.hdr_rq->list); list_del_init(&phba->sli4_hba.dat_rq->list); list_del_init(&phba->sli4_hba.mbx_cq->list); list_del_init(&phba->sli4_hba.els_cq->list); for (qindx = 0; qindx < phba->cfg_fcp_wq_count; qindx++) list_del_init(&phba->sli4_hba.fcp_wq[qindx]->list); for (qindx = 0; qindx < phba->cfg_fcp_eq_count; qindx++) list_del_init(&phba->sli4_hba.fcp_cq[qindx]->list); spin_unlock_irq(&phba->hbalock); /* Now physically reset the device */ lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0389 Performing PCI function reset!\n"); /* Perform FCoE PCI function reset */ lpfc_pci_function_reset(phba); return 0; } /** * lpfc_sli_brdrestart_s3 - Restart a sli-3 hba * @phba: Pointer to HBA context object. * * This function is called in the SLI initialization code path to * restart the HBA. The caller is not required to hold any lock. * This function writes MBX_RESTART mailbox command to the SLIM and * resets the HBA. At the end of the function, it calls lpfc_hba_down_post * function to free any pending commands. The function enables * POST only during the first initialization. The function returns zero. * The function does not guarantee completion of MBX_RESTART mailbox * command before the return of this function. **/ static int lpfc_sli_brdrestart_s3(struct lpfc_hba *phba) { MAILBOX_t *mb; struct lpfc_sli *psli; volatile uint32_t word0; void __iomem *to_slim; uint32_t hba_aer_enabled; spin_lock_irq(&phba->hbalock); /* Take PCIe device Advanced Error Reporting (AER) state */ hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED; psli = &phba->sli; /* Restart HBA */ lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0337 Restart HBA Data: x%x x%x\n", phba->pport->port_state, psli->sli_flag); word0 = 0; mb = (MAILBOX_t *) &word0; mb->mbxCommand = MBX_RESTART; mb->mbxHc = 1; lpfc_reset_barrier(phba); to_slim = phba->MBslimaddr; writel(*(uint32_t *) mb, to_slim); readl(to_slim); /* flush */ /* Only skip post after fc_ffinit is completed */ if (phba->pport->port_state) word0 = 1; /* This is really setting up word1 */ else word0 = 0; /* This is really setting up word1 */ to_slim = phba->MBslimaddr + sizeof (uint32_t); writel(*(uint32_t *) mb, to_slim); readl(to_slim); /* flush */ lpfc_sli_brdreset(phba); phba->pport->stopped = 0; phba->link_state = LPFC_INIT_START; phba->hba_flag = 0; spin_unlock_irq(&phba->hbalock); memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets)); psli->stats_start = get_seconds(); /* Give the INITFF and Post time to settle. */ mdelay(100); /* Reset HBA AER if it was enabled, note hba_flag was reset above */ if (hba_aer_enabled) pci_disable_pcie_error_reporting(phba->pcidev); lpfc_hba_down_post(phba); return 0; } /** * lpfc_sli_brdrestart_s4 - Restart the sli-4 hba * @phba: Pointer to HBA context object. * * This function is called in the SLI initialization code path to restart * a SLI4 HBA. The caller is not required to hold any lock. * At the end of the function, it calls lpfc_hba_down_post function to * free any pending commands. **/ static int lpfc_sli_brdrestart_s4(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; /* Restart HBA */ lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0296 Restart HBA Data: x%x x%x\n", phba->pport->port_state, psli->sli_flag); lpfc_sli4_brdreset(phba); spin_lock_irq(&phba->hbalock); phba->pport->stopped = 0; phba->link_state = LPFC_INIT_START; phba->hba_flag = 0; spin_unlock_irq(&phba->hbalock); memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets)); psli->stats_start = get_seconds(); lpfc_hba_down_post(phba); return 0; } /** * lpfc_sli_brdrestart - Wrapper func for restarting hba * @phba: Pointer to HBA context object. * * This routine wraps the actual SLI3 or SLI4 hba restart routine from the * API jump table function pointer from the lpfc_hba struct. **/ int lpfc_sli_brdrestart(struct lpfc_hba *phba) { return phba->lpfc_sli_brdrestart(phba); } /** * lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart * @phba: Pointer to HBA context object. * * This function is called after a HBA restart to wait for successful * restart of the HBA. Successful restart of the HBA is indicated by * HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15 * iteration, the function will restart the HBA again. The function returns * zero if HBA successfully restarted else returns negative error code. **/ static int lpfc_sli_chipset_init(struct lpfc_hba *phba) { uint32_t status, i = 0; /* Read the HBA Host Status Register */ status = readl(phba->HSregaddr); /* Check status register to see what current state is */ i = 0; while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) { /* Check every 100ms for 5 retries, then every 500ms for 5, then * every 2.5 sec for 5, then reset board and every 2.5 sec for * 4. */ if (i++ >= 20) { /* Adapter failed to init, timeout, status reg */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0436 Adapter failed to init, " "timeout, status reg x%x, " "FW Data: A8 x%x AC x%x\n", status, readl(phba->MBslimaddr + 0xa8), readl(phba->MBslimaddr + 0xac)); phba->link_state = LPFC_HBA_ERROR; return -ETIMEDOUT; } /* Check to see if any errors occurred during init */ if (status & HS_FFERM) { /* ERROR: During chipset initialization */ /* Adapter failed to init, chipset, status reg */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0437 Adapter failed to init, " "chipset, status reg x%x, " "FW Data: A8 x%x AC x%x\n", status, readl(phba->MBslimaddr + 0xa8), readl(phba->MBslimaddr + 0xac)); phba->link_state = LPFC_HBA_ERROR; return -EIO; } if (i <= 5) { msleep(10); } else if (i <= 10) { msleep(500); } else { msleep(2500); } if (i == 15) { /* Do post */ phba->pport->port_state = LPFC_VPORT_UNKNOWN; lpfc_sli_brdrestart(phba); } /* Read the HBA Host Status Register */ status = readl(phba->HSregaddr); } /* Check to see if any errors occurred during init */ if (status & HS_FFERM) { /* ERROR: During chipset initialization */ /* Adapter failed to init, chipset, status reg */ lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0438 Adapter failed to init, chipset, " "status reg x%x, " "FW Data: A8 x%x AC x%x\n", status, readl(phba->MBslimaddr + 0xa8), readl(phba->MBslimaddr + 0xac)); phba->link_state = LPFC_HBA_ERROR; return -EIO; } /* Clear all interrupt enable conditions */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ /* setup host attn register */ writel(0xffffffff, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ return 0; } /** * lpfc_sli_hbq_count - Get the number of HBQs to be configured * * This function calculates and returns the number of HBQs required to be * configured. **/ int lpfc_sli_hbq_count(void) { return ARRAY_SIZE(lpfc_hbq_defs); } /** * lpfc_sli_hbq_entry_count - Calculate total number of hbq entries * * This function adds the number of hbq entries in every HBQ to get * the total number of hbq entries required for the HBA and returns * the total count. **/ static int lpfc_sli_hbq_entry_count(void) { int hbq_count = lpfc_sli_hbq_count(); int count = 0; int i; for (i = 0; i < hbq_count; ++i) count += lpfc_hbq_defs[i]->entry_count; return count; } /** * lpfc_sli_hbq_size - Calculate memory required for all hbq entries * * This function calculates amount of memory required for all hbq entries * to be configured and returns the total memory required. **/ int lpfc_sli_hbq_size(void) { return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry); } /** * lpfc_sli_hbq_setup - configure and initialize HBQs * @phba: Pointer to HBA context object. * * This function is called during the SLI initialization to configure * all the HBQs and post buffers to the HBQ. The caller is not * required to hold any locks. This function will return zero if successful * else it will return negative error code. **/ static int lpfc_sli_hbq_setup(struct lpfc_hba *phba) { int hbq_count = lpfc_sli_hbq_count(); LPFC_MBOXQ_t *pmb; MAILBOX_t *pmbox; uint32_t hbqno; uint32_t hbq_entry_index; /* Get a Mailbox buffer to setup mailbox * commands for HBA initialization */ pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) return -ENOMEM; pmbox = &pmb->u.mb; /* Initialize the struct lpfc_sli_hbq structure for each hbq */ phba->link_state = LPFC_INIT_MBX_CMDS; phba->hbq_in_use = 1; hbq_entry_index = 0; for (hbqno = 0; hbqno < hbq_count; ++hbqno) { phba->hbqs[hbqno].next_hbqPutIdx = 0; phba->hbqs[hbqno].hbqPutIdx = 0; phba->hbqs[hbqno].local_hbqGetIdx = 0; phba->hbqs[hbqno].entry_count = lpfc_hbq_defs[hbqno]->entry_count; lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno], hbq_entry_index, pmb); hbq_entry_index += phba->hbqs[hbqno].entry_count; if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) { /* Adapter failed to init, mbxCmd CFG_RING, mbxStatus , ring */ lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT, "1805 Adapter failed to init. " "Data: x%x x%x x%x\n", pmbox->mbxCommand, pmbox->mbxStatus, hbqno); phba->link_state = LPFC_HBA_ERROR; mempool_free(pmb, phba->mbox_mem_pool); return ENXIO; } } phba->hbq_count = hbq_count; mempool_free(pmb, phba->mbox_mem_pool); /* Initially populate or replenish the HBQs */ for (hbqno = 0; hbqno < hbq_count; ++hbqno) lpfc_sli_hbqbuf_init_hbqs(phba, hbqno); return 0; } /** * lpfc_sli4_rb_setup - Initialize and post RBs to HBA * @phba: Pointer to HBA context object. * * This function is called during the SLI initialization to configure * all the HBQs and post buffers to the HBQ. The caller is not * required to hold any locks. This function will return zero if successful * else it will return negative error code. **/ static int lpfc_sli4_rb_setup(struct lpfc_hba *phba) { phba->hbq_in_use = 1; phba->hbqs[0].entry_count = lpfc_hbq_defs[0]->entry_count; phba->hbq_count = 1; /* Initially populate or replenish the HBQs */ lpfc_sli_hbqbuf_init_hbqs(phba, 0); return 0; } /** * lpfc_sli_config_port - Issue config port mailbox command * @phba: Pointer to HBA context object. * @sli_mode: sli mode - 2/3 * * This function is called by the sli intialization code path * to issue config_port mailbox command. This function restarts the * HBA firmware and issues a config_port mailbox command to configure * the SLI interface in the sli mode specified by sli_mode * variable. The caller is not required to hold any locks. * The function returns 0 if successful, else returns negative error * code. **/ int lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode) { LPFC_MBOXQ_t *pmb; uint32_t resetcount = 0, rc = 0, done = 0; pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { phba->link_state = LPFC_HBA_ERROR; return -ENOMEM; } phba->sli_rev = sli_mode; while (resetcount < 2 && !done) { spin_lock_irq(&phba->hbalock); phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE; spin_unlock_irq(&phba->hbalock); phba->pport->port_state = LPFC_VPORT_UNKNOWN; lpfc_sli_brdrestart(phba); rc = lpfc_sli_chipset_init(phba); if (rc) break; spin_lock_irq(&phba->hbalock); phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irq(&phba->hbalock); resetcount++; /* Call pre CONFIG_PORT mailbox command initialization. A * value of 0 means the call was successful. Any other * nonzero value is a failure, but if ERESTART is returned, * the driver may reset the HBA and try again. */ rc = lpfc_config_port_prep(phba); if (rc == -ERESTART) { phba->link_state = LPFC_LINK_UNKNOWN; continue; } else if (rc) break; phba->link_state = LPFC_INIT_MBX_CMDS; lpfc_config_port(phba, pmb); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED | LPFC_SLI3_CRP_ENABLED | LPFC_SLI3_INB_ENABLED | LPFC_SLI3_BG_ENABLED); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0442 Adapter failed to init, mbxCmd x%x " "CONFIG_PORT, mbxStatus x%x Data: x%x\n", pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0); spin_lock_irq(&phba->hbalock); phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); rc = -ENXIO; } else { /* Allow asynchronous mailbox command to go through */ spin_lock_irq(&phba->hbalock); phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; spin_unlock_irq(&phba->hbalock); done = 1; } } if (!done) { rc = -EINVAL; goto do_prep_failed; } if (pmb->u.mb.un.varCfgPort.sli_mode == 3) { if (!pmb->u.mb.un.varCfgPort.cMA) { rc = -ENXIO; goto do_prep_failed; } if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) { phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi; phba->max_vports = (phba->max_vpi > phba->max_vports) ? phba->max_vpi : phba->max_vports; } else phba->max_vpi = 0; if (pmb->u.mb.un.varCfgPort.gdss) phba->sli3_options |= LPFC_SLI3_DSS_ENABLED; if (pmb->u.mb.un.varCfgPort.gerbm) phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED; if (pmb->u.mb.un.varCfgPort.gcrp) phba->sli3_options |= LPFC_SLI3_CRP_ENABLED; if (pmb->u.mb.un.varCfgPort.ginb) { phba->sli3_options |= LPFC_SLI3_INB_ENABLED; phba->hbq_get = phba->mbox->us.s3_inb_pgp.hbq_get; phba->port_gp = phba->mbox->us.s3_inb_pgp.port; phba->inb_ha_copy = &phba->mbox->us.s3_inb_pgp.ha_copy; phba->inb_counter = &phba->mbox->us.s3_inb_pgp.counter; phba->inb_last_counter = phba->mbox->us.s3_inb_pgp.counter; } else { phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get; phba->port_gp = phba->mbox->us.s3_pgp.port; phba->inb_ha_copy = NULL; phba->inb_counter = NULL; } if (phba->cfg_enable_bg) { if (pmb->u.mb.un.varCfgPort.gbg) phba->sli3_options |= LPFC_SLI3_BG_ENABLED; else lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0443 Adapter did not grant " "BlockGuard\n"); } } else { phba->hbq_get = NULL; phba->port_gp = phba->mbox->us.s2.port; phba->inb_ha_copy = NULL; phba->inb_counter = NULL; phba->max_vpi = 0; } do_prep_failed: mempool_free(pmb, phba->mbox_mem_pool); return rc; } /** * lpfc_sli_hba_setup - SLI intialization function * @phba: Pointer to HBA context object. * * This function is the main SLI intialization function. This function * is called by the HBA intialization code, HBA reset code and HBA * error attention handler code. Caller is not required to hold any * locks. This function issues config_port mailbox command to configure * the SLI, setup iocb rings and HBQ rings. In the end the function * calls the config_port_post function to issue init_link mailbox * command and to start the discovery. The function will return zero * if successful, else it will return negative error code. **/ int lpfc_sli_hba_setup(struct lpfc_hba *phba) { uint32_t rc; int mode = 3; switch (lpfc_sli_mode) { case 2: if (phba->cfg_enable_npiv) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, "1824 NPIV enabled: Override lpfc_sli_mode " "parameter (%d) to auto (0).\n", lpfc_sli_mode); break; } mode = 2; break; case 0: case 3: break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, "1819 Unrecognized lpfc_sli_mode " "parameter: %d.\n", lpfc_sli_mode); break; } rc = lpfc_sli_config_port(phba, mode); if (rc && lpfc_sli_mode == 3) lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, "1820 Unable to select SLI-3. " "Not supported by adapter.\n"); if (rc && mode != 2) rc = lpfc_sli_config_port(phba, 2); if (rc) goto lpfc_sli_hba_setup_error; /* Enable PCIe device Advanced Error Reporting (AER) if configured */ if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) { rc = pci_enable_pcie_error_reporting(phba->pcidev); if (!rc) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2709 This device supports " "Advanced Error Reporting (AER)\n"); spin_lock_irq(&phba->hbalock); phba->hba_flag |= HBA_AER_ENABLED; spin_unlock_irq(&phba->hbalock); } else { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2708 This device does not support " "Advanced Error Reporting (AER)\n"); phba->cfg_aer_support = 0; } } if (phba->sli_rev == 3) { phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE; phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE; } else { phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE; phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE; phba->sli3_options = 0; } lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "0444 Firmware in SLI %x mode. Max_vpi %d\n", phba->sli_rev, phba->max_vpi); rc = lpfc_sli_ring_map(phba); if (rc) goto lpfc_sli_hba_setup_error; /* Init HBQs */ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { rc = lpfc_sli_hbq_setup(phba); if (rc) goto lpfc_sli_hba_setup_error; } spin_lock_irq(&phba->hbalock); phba->sli.sli_flag |= LPFC_PROCESS_LA; spin_unlock_irq(&phba->hbalock); rc = lpfc_config_port_post(phba); if (rc) goto lpfc_sli_hba_setup_error; return rc; lpfc_sli_hba_setup_error: phba->link_state = LPFC_HBA_ERROR; lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0445 Firmware initialization failed\n"); return rc; } /** * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region * @phba: Pointer to HBA context object. * @mboxq: mailbox pointer. * This function issue a dump mailbox command to read config region * 23 and parse the records in the region and populate driver * data structure. **/ static int lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) { struct lpfc_dmabuf *mp; struct lpfc_mqe *mqe; uint32_t data_length; int rc; /* Program the default value of vlan_id and fc_map */ phba->valid_vlan = 0; phba->fc_map[0] = LPFC_FCOE_FCF_MAP0; phba->fc_map[1] = LPFC_FCOE_FCF_MAP1; phba->fc_map[2] = LPFC_FCOE_FCF_MAP2; mqe = &mboxq->u.mqe; if (lpfc_dump_fcoe_param(phba, mboxq)) return -ENOMEM; mp = (struct lpfc_dmabuf *) mboxq->context1; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):2571 Mailbox cmd x%x Status x%x " "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x " "x%x x%x x%x x%x x%x x%x x%x x%x x%x " "CQ: x%x x%x x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, bf_get(lpfc_mqe_command, mqe), bf_get(lpfc_mqe_status, mqe), mqe->un.mb_words[0], mqe->un.mb_words[1], mqe->un.mb_words[2], mqe->un.mb_words[3], mqe->un.mb_words[4], mqe->un.mb_words[5], mqe->un.mb_words[6], mqe->un.mb_words[7], mqe->un.mb_words[8], mqe->un.mb_words[9], mqe->un.mb_words[10], mqe->un.mb_words[11], mqe->un.mb_words[12], mqe->un.mb_words[13], mqe->un.mb_words[14], mqe->un.mb_words[15], mqe->un.mb_words[16], mqe->un.mb_words[50], mboxq->mcqe.word0, mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1, mboxq->mcqe.trailer); if (rc) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); return -EIO; } data_length = mqe->un.mb_words[5]; if (data_length > DMP_RGN23_SIZE) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); return -EIO; } lpfc_parse_fcoe_conf(phba, mp->virt, data_length); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); return 0; } /** * lpfc_sli4_read_rev - Issue READ_REV and collect vpd data * @phba: pointer to lpfc hba data structure. * @mboxq: pointer to the LPFC_MBOXQ_t structure. * @vpd: pointer to the memory to hold resulting port vpd data. * @vpd_size: On input, the number of bytes allocated to @vpd. * On output, the number of data bytes in @vpd. * * This routine executes a READ_REV SLI4 mailbox command. In * addition, this routine gets the port vpd data. * * Return codes * 0 - successful * ENOMEM - could not allocated memory. **/ static int lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, uint8_t *vpd, uint32_t *vpd_size) { int rc = 0; uint32_t dma_size; struct lpfc_dmabuf *dmabuf; struct lpfc_mqe *mqe; dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!dmabuf) return -ENOMEM; /* * Get a DMA buffer for the vpd data resulting from the READ_REV * mailbox command. */ dma_size = *vpd_size; dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, dma_size, &dmabuf->phys, GFP_KERNEL); if (!dmabuf->virt) { kfree(dmabuf); return -ENOMEM; } memset(dmabuf->virt, 0, dma_size); /* * The SLI4 implementation of READ_REV conflicts at word1, * bits 31:16 and SLI4 adds vpd functionality not present * in SLI3. This code corrects the conflicts. */ lpfc_read_rev(phba, mboxq); mqe = &mboxq->u.mqe; mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys); mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys); mqe->un.read_rev.word1 &= 0x0000FFFF; bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1); bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); if (rc) { dma_free_coherent(&phba->pcidev->dev, dma_size, dmabuf->virt, dmabuf->phys); kfree(dmabuf); return -EIO; } /* * The available vpd length cannot be bigger than the * DMA buffer passed to the port. Catch the less than * case and update the caller's size. */ if (mqe->un.read_rev.avail_vpd_len < *vpd_size) *vpd_size = mqe->un.read_rev.avail_vpd_len; lpfc_sli_pcimem_bcopy(dmabuf->virt, vpd, *vpd_size); dma_free_coherent(&phba->pcidev->dev, dma_size, dmabuf->virt, dmabuf->phys); kfree(dmabuf); return 0; } /** * lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues * @phba: pointer to lpfc hba data structure. * * This routine is called to explicitly arm the SLI4 device's completion and * event queues **/ static void lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba) { uint8_t fcp_eqidx; lpfc_sli4_cq_release(phba->sli4_hba.mbx_cq, LPFC_QUEUE_REARM); lpfc_sli4_cq_release(phba->sli4_hba.els_cq, LPFC_QUEUE_REARM); for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) lpfc_sli4_cq_release(phba->sli4_hba.fcp_cq[fcp_eqidx], LPFC_QUEUE_REARM); lpfc_sli4_eq_release(phba->sli4_hba.sp_eq, LPFC_QUEUE_REARM); for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) lpfc_sli4_eq_release(phba->sli4_hba.fp_eq[fcp_eqidx], LPFC_QUEUE_REARM); } /** * lpfc_sli4_hba_setup - SLI4 device intialization PCI function * @phba: Pointer to HBA context object. * * This function is the main SLI4 device intialization PCI function. This * function is called by the HBA intialization code, HBA reset code and * HBA error attention handler code. Caller is not required to hold any * locks. **/ int lpfc_sli4_hba_setup(struct lpfc_hba *phba) { int rc; LPFC_MBOXQ_t *mboxq; struct lpfc_mqe *mqe; uint8_t *vpd; uint32_t vpd_size; uint32_t ftr_rsp = 0; struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); struct lpfc_vport *vport = phba->pport; struct lpfc_dmabuf *mp; /* Perform a PCI function reset to start from clean */ rc = lpfc_pci_function_reset(phba); if (unlikely(rc)) return -ENODEV; /* Check the HBA Host Status Register for readyness */ rc = lpfc_sli4_post_status_check(phba); if (unlikely(rc)) return -ENODEV; else { spin_lock_irq(&phba->hbalock); phba->sli.sli_flag |= LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); } /* * Allocate a single mailbox container for initializing the * port. */ mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) return -ENOMEM; /* * Continue initialization with default values even if driver failed * to read FCoE param config regions */ if (lpfc_sli4_read_fcoe_params(phba, mboxq)) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT, "2570 Failed to read FCoE parameters\n"); /* Issue READ_REV to collect vpd and FW information. */ vpd_size = PAGE_SIZE; vpd = kzalloc(vpd_size, GFP_KERNEL); if (!vpd) { rc = -ENOMEM; goto out_free_mbox; } rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size); if (unlikely(rc)) goto out_free_vpd; mqe = &mboxq->u.mqe; phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev); if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev)) phba->hba_flag |= HBA_FCOE_SUPPORT; if (bf_get(lpfc_mbx_rd_rev_cee_ver, &mqe->un.read_rev) == LPFC_DCBX_CEE_MODE) phba->hba_flag |= HBA_FIP_SUPPORT; else phba->hba_flag &= ~HBA_FIP_SUPPORT; if (phba->sli_rev != LPFC_SLI_REV4 || !(phba->hba_flag & HBA_FCOE_SUPPORT)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0376 READ_REV Error. SLI Level %d " "FCoE enabled %d\n", phba->sli_rev, phba->hba_flag & HBA_FCOE_SUPPORT); rc = -EIO; goto out_free_vpd; } /* * Evaluate the read rev and vpd data. Populate the driver * state with the results. If this routine fails, the failure * is not fatal as the driver will use generic values. */ rc = lpfc_parse_vpd(phba, vpd, vpd_size); if (unlikely(!rc)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0377 Error %d parsing vpd. " "Using defaults.\n", rc); rc = 0; } /* Save information as VPD data */ phba->vpd.rev.biuRev = mqe->un.read_rev.first_hw_rev; phba->vpd.rev.smRev = mqe->un.read_rev.second_hw_rev; phba->vpd.rev.endecRev = mqe->un.read_rev.third_hw_rev; phba->vpd.rev.fcphHigh = bf_get(lpfc_mbx_rd_rev_fcph_high, &mqe->un.read_rev); phba->vpd.rev.fcphLow = bf_get(lpfc_mbx_rd_rev_fcph_low, &mqe->un.read_rev); phba->vpd.rev.feaLevelHigh = bf_get(lpfc_mbx_rd_rev_ftr_lvl_high, &mqe->un.read_rev); phba->vpd.rev.feaLevelLow = bf_get(lpfc_mbx_rd_rev_ftr_lvl_low, &mqe->un.read_rev); phba->vpd.rev.sli1FwRev = mqe->un.read_rev.fw_id_rev; memcpy(phba->vpd.rev.sli1FwName, mqe->un.read_rev.fw_name, 16); phba->vpd.rev.sli2FwRev = mqe->un.read_rev.ulp_fw_id_rev; memcpy(phba->vpd.rev.sli2FwName, mqe->un.read_rev.ulp_fw_name, 16); phba->vpd.rev.opFwRev = mqe->un.read_rev.fw_id_rev; memcpy(phba->vpd.rev.opFwName, mqe->un.read_rev.fw_name, 16); lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0380 READ_REV Status x%x " "fw_rev:%s fcphHi:%x fcphLo:%x flHi:%x flLo:%x\n", mboxq->vport ? mboxq->vport->vpi : 0, bf_get(lpfc_mqe_status, mqe), phba->vpd.rev.opFwName, phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow, phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow); /* * Discover the port's supported feature set and match it against the * hosts requests. */ lpfc_request_features(phba, mboxq); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); if (unlikely(rc)) { rc = -EIO; goto out_free_vpd; } /* * The port must support FCP initiator mode as this is the * only mode running in the host. */ if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, "0378 No support for fcpi mode.\n"); ftr_rsp++; } /* * If the port cannot support the host's requested features * then turn off the global config parameters to disable the * feature in the driver. This is not a fatal error. */ if ((phba->cfg_enable_bg) && !(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) ftr_rsp++; if (phba->max_vpi && phba->cfg_enable_npiv && !(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs))) ftr_rsp++; if (ftr_rsp) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, "0379 Feature Mismatch Data: x%08x %08x " "x%x x%x x%x\n", mqe->un.req_ftrs.word2, mqe->un.req_ftrs.word3, phba->cfg_enable_bg, phba->cfg_enable_npiv, phba->max_vpi); if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) phba->cfg_enable_bg = 0; if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs))) phba->cfg_enable_npiv = 0; } /* These SLI3 features are assumed in SLI4 */ spin_lock_irq(&phba->hbalock); phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED); spin_unlock_irq(&phba->hbalock); /* Read the port's service parameters. */ rc = lpfc_read_sparam(phba, mboxq, vport->vpi); if (rc) { phba->link_state = LPFC_HBA_ERROR; rc = -ENOMEM; goto out_free_vpd; } mboxq->vport = vport; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); mp = (struct lpfc_dmabuf *) mboxq->context1; if (rc == MBX_SUCCESS) { memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm)); rc = 0; } /* * This memory was allocated by the lpfc_read_sparam routine. Release * it to the mbuf pool. */ lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); mboxq->context1 = NULL; if (unlikely(rc)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0382 READ_SPARAM command failed " "status %d, mbxStatus x%x\n", rc, bf_get(lpfc_mqe_status, mqe)); phba->link_state = LPFC_HBA_ERROR; rc = -EIO; goto out_free_vpd; } if (phba->cfg_soft_wwnn) u64_to_wwn(phba->cfg_soft_wwnn, vport->fc_sparam.nodeName.u.wwn); if (phba->cfg_soft_wwpn) u64_to_wwn(phba->cfg_soft_wwpn, vport->fc_sparam.portName.u.wwn); memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, sizeof(struct lpfc_name)); memcpy(&vport->fc_portname, &vport->fc_sparam.portName, sizeof(struct lpfc_name)); /* Update the fc_host data structures with new wwn. */ fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn); fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); /* Register SGL pool to the device using non-embedded mailbox command */ rc = lpfc_sli4_post_sgl_list(phba); if (unlikely(rc)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0582 Error %d during sgl post operation\n", rc); rc = -ENODEV; goto out_free_vpd; } /* Register SCSI SGL pool to the device */ rc = lpfc_sli4_repost_scsi_sgl_list(phba); if (unlikely(rc)) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, "0383 Error %d during scsi sgl post " "operation\n", rc); /* Some Scsi buffers were moved to the abort scsi list */ /* A pci function reset will repost them */ rc = -ENODEV; goto out_free_vpd; } /* Post the rpi header region to the device. */ rc = lpfc_sli4_post_all_rpi_hdrs(phba); if (unlikely(rc)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0393 Error %d during rpi post operation\n", rc); rc = -ENODEV; goto out_free_vpd; } /* Set up all the queues to the device */ rc = lpfc_sli4_queue_setup(phba); if (unlikely(rc)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0381 Error %d during queue setup.\n ", rc); goto out_stop_timers; } /* Arm the CQs and then EQs on device */ lpfc_sli4_arm_cqeq_intr(phba); /* Indicate device interrupt mode */ phba->sli4_hba.intr_enable = 1; /* Allow asynchronous mailbox command to go through */ spin_lock_irq(&phba->hbalock); phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; spin_unlock_irq(&phba->hbalock); /* Post receive buffers to the device */ lpfc_sli4_rb_setup(phba); /* Reset HBA FCF states after HBA reset */ phba->fcf.fcf_flag = 0; phba->fcf.current_rec.flag = 0; /* Start the ELS watchdog timer */ mod_timer(&vport->els_tmofunc, jiffies + HZ * (phba->fc_ratov * 2)); /* Start heart beat timer */ mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL); phba->hb_outstanding = 0; phba->last_completion_time = jiffies; /* Start error attention (ERATT) polling timer */ mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL); /* * The port is ready, set the host's link state to LINK_DOWN * in preparation for link interrupts. */ lpfc_init_link(phba, mboxq, phba->cfg_topology, phba->cfg_link_speed); mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl; lpfc_set_loopback_flag(phba); /* Change driver state to LPFC_LINK_DOWN right before init link */ spin_lock_irq(&phba->hbalock); phba->link_state = LPFC_LINK_DOWN; spin_unlock_irq(&phba->hbalock); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (unlikely(rc != MBX_NOT_FINISHED)) { kfree(vpd); return 0; } else rc = -EIO; /* Unset all the queues set up in this routine when error out */ if (rc) lpfc_sli4_queue_unset(phba); out_stop_timers: if (rc) lpfc_stop_hba_timers(phba); out_free_vpd: kfree(vpd); out_free_mbox: mempool_free(mboxq, phba->mbox_mem_pool); return rc; } /** * lpfc_mbox_timeout - Timeout call back function for mbox timer * @ptr: context object - pointer to hba structure. * * This is the callback function for mailbox timer. The mailbox * timer is armed when a new mailbox command is issued and the timer * is deleted when the mailbox complete. The function is called by * the kernel timer code when a mailbox does not complete within * expected time. This function wakes up the worker thread to * process the mailbox timeout and returns. All the processing is * done by the worker thread function lpfc_mbox_timeout_handler. **/ void lpfc_mbox_timeout(unsigned long ptr) { struct lpfc_hba *phba = (struct lpfc_hba *) ptr; unsigned long iflag; uint32_t tmo_posted; spin_lock_irqsave(&phba->pport->work_port_lock, iflag); tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO; if (!tmo_posted) phba->pport->work_port_events |= WORKER_MBOX_TMO; spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); if (!tmo_posted) lpfc_worker_wake_up(phba); return; } /** * lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout * @phba: Pointer to HBA context object. * * This function is called from worker thread when a mailbox command times out. * The caller is not required to hold any locks. This function will reset the * HBA and recover all the pending commands. **/ void lpfc_mbox_timeout_handler(struct lpfc_hba *phba) { LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active; MAILBOX_t *mb = &pmbox->u.mb; struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; /* Check the pmbox pointer first. There is a race condition * between the mbox timeout handler getting executed in the * worklist and the mailbox actually completing. When this * race condition occurs, the mbox_active will be NULL. */ spin_lock_irq(&phba->hbalock); if (pmbox == NULL) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, "0353 Active Mailbox cleared - mailbox timeout " "exiting\n"); spin_unlock_irq(&phba->hbalock); return; } /* Mbox cmd timeout */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n", mb->mbxCommand, phba->pport->port_state, phba->sli.sli_flag, phba->sli.mbox_active); spin_unlock_irq(&phba->hbalock); /* Setting state unknown so lpfc_sli_abort_iocb_ring * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing * it to fail all oustanding SCSI IO. */ spin_lock_irq(&phba->pport->work_port_lock); phba->pport->work_port_events &= ~WORKER_MBOX_TMO; spin_unlock_irq(&phba->pport->work_port_lock); spin_lock_irq(&phba->hbalock); phba->link_state = LPFC_LINK_UNKNOWN; psli->sli_flag &= ~LPFC_SLI_ACTIVE; spin_unlock_irq(&phba->hbalock); pring = &psli->ring[psli->fcp_ring]; lpfc_sli_abort_iocb_ring(phba, pring); lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0345 Resetting board due to mailbox timeout\n"); /* Reset the HBA device */ lpfc_reset_hba(phba); } /** * lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware * @phba: Pointer to HBA context object. * @pmbox: Pointer to mailbox object. * @flag: Flag indicating how the mailbox need to be processed. * * This function is called by discovery code and HBA management code * to submit a mailbox command to firmware with SLI-3 interface spec. This * function gets the hbalock to protect the data structures. * The mailbox command can be submitted in polling mode, in which case * this function will wait in a polling loop for the completion of the * mailbox. * If the mailbox is submitted in no_wait mode (not polling) the * function will submit the command and returns immediately without waiting * for the mailbox completion. The no_wait is supported only when HBA * is in SLI2/SLI3 mode - interrupts are enabled. * The SLI interface allows only one mailbox pending at a time. If the * mailbox is issued in polling mode and there is already a mailbox * pending, then the function will return an error. If the mailbox is issued * in NO_WAIT mode and there is a mailbox pending already, the function * will return MBX_BUSY after queuing the mailbox into mailbox queue. * The sli layer owns the mailbox object until the completion of mailbox * command if this function return MBX_BUSY or MBX_SUCCESS. For all other * return codes the caller owns the mailbox command after the return of * the function. **/ static int lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag) { MAILBOX_t *mb; struct lpfc_sli *psli = &phba->sli; uint32_t status, evtctr; uint32_t ha_copy; int i; unsigned long timeout; unsigned long drvr_flag = 0; uint32_t word0, ldata; void __iomem *to_slim; int processing_queue = 0; spin_lock_irqsave(&phba->hbalock, drvr_flag); if (!pmbox) { phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; /* processing mbox queue from intr_handler */ if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); return MBX_SUCCESS; } processing_queue = 1; pmbox = lpfc_mbox_get(phba); if (!pmbox) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); return MBX_SUCCESS; } } if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) { if(!pmbox->vport) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_VPORT, "1806 Mbox x%x failed. No vport\n", pmbox->u.mb.mbxCommand); dump_stack(); goto out_not_finished; } } /* If the PCI channel is in offline state, do not post mbox. */ if (unlikely(pci_channel_offline(phba->pcidev))) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); goto out_not_finished; } /* If HBA has a deferred error attention, fail the iocb. */ if (unlikely(phba->hba_flag & DEFER_ERATT)) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); goto out_not_finished; } psli = &phba->sli; mb = &pmbox->u.mb; status = MBX_SUCCESS; if (phba->link_state == LPFC_HBA_ERROR) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); /* Mbox command cannot issue */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):0311 Mailbox command x%x cannot " "issue Data: x%x x%x\n", pmbox->vport ? pmbox->vport->vpi : 0, pmbox->u.mb.mbxCommand, psli->sli_flag, flag); goto out_not_finished; } if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT && !(readl(phba->HCregaddr) & HC_MBINT_ENA)) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2528 Mailbox command x%x cannot " "issue Data: x%x x%x\n", pmbox->vport ? pmbox->vport->vpi : 0, pmbox->u.mb.mbxCommand, psli->sli_flag, flag); goto out_not_finished; } if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { /* Polling for a mbox command when another one is already active * is not allowed in SLI. Also, the driver must have established * SLI2 mode to queue and process multiple mbox commands. */ if (flag & MBX_POLL) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); /* Mbox command cannot issue */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2529 Mailbox command x%x " "cannot issue Data: x%x x%x\n", pmbox->vport ? pmbox->vport->vpi : 0, pmbox->u.mb.mbxCommand, psli->sli_flag, flag); goto out_not_finished; } if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); /* Mbox command cannot issue */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2530 Mailbox command x%x " "cannot issue Data: x%x x%x\n", pmbox->vport ? pmbox->vport->vpi : 0, pmbox->u.mb.mbxCommand, psli->sli_flag, flag); goto out_not_finished; } /* Another mailbox command is still being processed, queue this * command to be processed later. */ lpfc_mbox_put(phba, pmbox); /* Mbox cmd issue - BUSY */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0308 Mbox cmd issue - BUSY Data: " "x%x x%x x%x x%x\n", pmbox->vport ? pmbox->vport->vpi : 0xffffff, mb->mbxCommand, phba->pport->port_state, psli->sli_flag, flag); psli->slistat.mbox_busy++; spin_unlock_irqrestore(&phba->hbalock, drvr_flag); if (pmbox->vport) { lpfc_debugfs_disc_trc(pmbox->vport, LPFC_DISC_TRC_MBOX_VPORT, "MBOX Bsy vport: cmd:x%x mb:x%x x%x", (uint32_t)mb->mbxCommand, mb->un.varWords[0], mb->un.varWords[1]); } else { lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_MBOX, "MBOX Bsy: cmd:x%x mb:x%x x%x", (uint32_t)mb->mbxCommand, mb->un.varWords[0], mb->un.varWords[1]); } return MBX_BUSY; } psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; /* If we are not polling, we MUST be in SLI2 mode */ if (flag != MBX_POLL) { if (!(psli->sli_flag & LPFC_SLI_ACTIVE) && (mb->mbxCommand != MBX_KILL_BOARD)) { psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irqrestore(&phba->hbalock, drvr_flag); /* Mbox command cannot issue */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2531 Mailbox command x%x " "cannot issue Data: x%x x%x\n", pmbox->vport ? pmbox->vport->vpi : 0, pmbox->u.mb.mbxCommand, psli->sli_flag, flag); goto out_not_finished; } /* timeout active mbox command */ mod_timer(&psli->mbox_tmo, (jiffies + (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand)))); } /* Mailbox cmd issue */ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x " "x%x\n", pmbox->vport ? pmbox->vport->vpi : 0, mb->mbxCommand, phba->pport->port_state, psli->sli_flag, flag); if (mb->mbxCommand != MBX_HEARTBEAT) { if (pmbox->vport) { lpfc_debugfs_disc_trc(pmbox->vport, LPFC_DISC_TRC_MBOX_VPORT, "MBOX Send vport: cmd:x%x mb:x%x x%x", (uint32_t)mb->mbxCommand, mb->un.varWords[0], mb->un.varWords[1]); } else { lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_MBOX, "MBOX Send: cmd:x%x mb:x%x x%x", (uint32_t)mb->mbxCommand, mb->un.varWords[0], mb->un.varWords[1]); } } psli->slistat.mbox_cmd++; evtctr = psli->slistat.mbox_event; /* next set own bit for the adapter and copy over command word */ mb->mbxOwner = OWN_CHIP; if (psli->sli_flag & LPFC_SLI_ACTIVE) { /* First copy command data to host SLIM area */ lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE); } else { if (mb->mbxCommand == MBX_CONFIG_PORT) { /* copy command data into host mbox for cmpl */ lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE); } /* First copy mbox command data to HBA SLIM, skip past first word */ to_slim = phba->MBslimaddr + sizeof (uint32_t); lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0], MAILBOX_CMD_SIZE - sizeof (uint32_t)); /* Next copy over first word, with mbxOwner set */ ldata = *((uint32_t *)mb); to_slim = phba->MBslimaddr; writel(ldata, to_slim); readl(to_slim); /* flush */ if (mb->mbxCommand == MBX_CONFIG_PORT) { /* switch over to host mailbox */ psli->sli_flag |= LPFC_SLI_ACTIVE; } } wmb(); switch (flag) { case MBX_NOWAIT: /* Set up reference to mailbox command */ psli->mbox_active = pmbox; /* Interrupt board to do it */ writel(CA_MBATT, phba->CAregaddr); readl(phba->CAregaddr); /* flush */ /* Don't wait for it to finish, just return */ break; case MBX_POLL: /* Set up null reference to mailbox command */ psli->mbox_active = NULL; /* Interrupt board to do it */ writel(CA_MBATT, phba->CAregaddr); readl(phba->CAregaddr); /* flush */ if (psli->sli_flag & LPFC_SLI_ACTIVE) { /* First read mbox status word */ word0 = *((uint32_t *)phba->mbox); word0 = le32_to_cpu(word0); } else { /* First read mbox status word */ word0 = readl(phba->MBslimaddr); } /* Read the HBA Host Attention Register */ ha_copy = readl(phba->HAregaddr); timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mb->mbxCommand) * 1000) + jiffies; i = 0; /* Wait for command to complete */ while (((word0 & OWN_CHIP) == OWN_CHIP) || (!(ha_copy & HA_MBATT) && (phba->link_state > LPFC_WARM_START))) { if (time_after(jiffies, timeout)) { psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irqrestore(&phba->hbalock, drvr_flag); goto out_not_finished; } /* Check if we took a mbox interrupt while we were polling */ if (((word0 & OWN_CHIP) != OWN_CHIP) && (evtctr != psli->slistat.mbox_event)) break; if (i++ > 10) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); msleep(1); spin_lock_irqsave(&phba->hbalock, drvr_flag); } if (psli->sli_flag & LPFC_SLI_ACTIVE) { /* First copy command data */ word0 = *((uint32_t *)phba->mbox); word0 = le32_to_cpu(word0); if (mb->mbxCommand == MBX_CONFIG_PORT) { MAILBOX_t *slimmb; uint32_t slimword0; /* Check real SLIM for any errors */ slimword0 = readl(phba->MBslimaddr); slimmb = (MAILBOX_t *) & slimword0; if (((slimword0 & OWN_CHIP) != OWN_CHIP) && slimmb->mbxStatus) { psli->sli_flag &= ~LPFC_SLI_ACTIVE; word0 = slimword0; } } } else { /* First copy command data */ word0 = readl(phba->MBslimaddr); } /* Read the HBA Host Attention Register */ ha_copy = readl(phba->HAregaddr); } if (psli->sli_flag & LPFC_SLI_ACTIVE) { /* copy results back to user */ lpfc_sli_pcimem_bcopy(phba->mbox, mb, MAILBOX_CMD_SIZE); } else { /* First copy command data */ lpfc_memcpy_from_slim(mb, phba->MBslimaddr, MAILBOX_CMD_SIZE); if ((mb->mbxCommand == MBX_DUMP_MEMORY) && pmbox->context2) { lpfc_memcpy_from_slim((void *)pmbox->context2, phba->MBslimaddr + DMP_RSP_OFFSET, mb->un.varDmp.word_cnt); } } writel(HA_MBATT, phba->HAregaddr); readl(phba->HAregaddr); /* flush */ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; status = mb->mbxStatus; } spin_unlock_irqrestore(&phba->hbalock, drvr_flag); return status; out_not_finished: if (processing_queue) { pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED; lpfc_mbox_cmpl_put(phba, pmbox); } return MBX_NOT_FINISHED; } /** * lpfc_sli4_async_mbox_block - Block posting SLI4 asynchronous mailbox command * @phba: Pointer to HBA context object. * * The function blocks the posting of SLI4 asynchronous mailbox commands from * the driver internal pending mailbox queue. It will then try to wait out the * possible outstanding mailbox command before return. * * Returns: * 0 - the outstanding mailbox command completed; otherwise, the wait for * the outstanding mailbox command timed out. **/ static int lpfc_sli4_async_mbox_block(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; uint8_t actcmd = MBX_HEARTBEAT; int rc = 0; unsigned long timeout; /* Mark the asynchronous mailbox command posting as blocked */ spin_lock_irq(&phba->hbalock); psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK; if (phba->sli.mbox_active) actcmd = phba->sli.mbox_active->u.mb.mbxCommand; spin_unlock_irq(&phba->hbalock); /* Determine how long we might wait for the active mailbox * command to be gracefully completed by firmware. */ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) + jiffies; /* Wait for the outstnading mailbox command to complete */ while (phba->sli.mbox_active) { /* Check active mailbox complete status every 2ms */ msleep(2); if (time_after(jiffies, timeout)) { /* Timeout, marked the outstanding cmd not complete */ rc = 1; break; } } /* Can not cleanly block async mailbox command, fails it */ if (rc) { spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; spin_unlock_irq(&phba->hbalock); } return rc; } /** * lpfc_sli4_async_mbox_unblock - Block posting SLI4 async mailbox command * @phba: Pointer to HBA context object. * * The function unblocks and resume posting of SLI4 asynchronous mailbox * commands from the driver internal pending mailbox queue. It makes sure * that there is no outstanding mailbox command before resuming posting * asynchronous mailbox commands. If, for any reason, there is outstanding * mailbox command, it will try to wait it out before resuming asynchronous * mailbox command posting. **/ static void lpfc_sli4_async_mbox_unblock(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; spin_lock_irq(&phba->hbalock); if (!(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { /* Asynchronous mailbox posting is not blocked, do nothing */ spin_unlock_irq(&phba->hbalock); return; } /* Outstanding synchronous mailbox command is guaranteed to be done, * successful or timeout, after timing-out the outstanding mailbox * command shall always be removed, so just unblock posting async * mailbox command and resume */ psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; spin_unlock_irq(&phba->hbalock); /* wake up worker thread to post asynchronlous mailbox command */ lpfc_worker_wake_up(phba); } /** * lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox * @phba: Pointer to HBA context object. * @mboxq: Pointer to mailbox object. * * The function posts a mailbox to the port. The mailbox is expected * to be comletely filled in and ready for the port to operate on it. * This routine executes a synchronous completion operation on the * mailbox by polling for its completion. * * The caller must not be holding any locks when calling this routine. * * Returns: * MBX_SUCCESS - mailbox posted successfully * Any of the MBX error values. **/ static int lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) { int rc = MBX_SUCCESS; unsigned long iflag; uint32_t db_ready; uint32_t mcqe_status; uint32_t mbx_cmnd; unsigned long timeout; struct lpfc_sli *psli = &phba->sli; struct lpfc_mqe *mb = &mboxq->u.mqe; struct lpfc_bmbx_create *mbox_rgn; struct dma_address *dma_address; struct lpfc_register bmbx_reg; /* * Only one mailbox can be active to the bootstrap mailbox region * at a time and there is no queueing provided. */ spin_lock_irqsave(&phba->hbalock, iflag); if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { spin_unlock_irqrestore(&phba->hbalock, iflag); lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2532 Mailbox command x%x (x%x) " "cannot issue Data: x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mboxq->u.mb.mbxCommand, lpfc_sli4_mbox_opcode_get(phba, mboxq), psli->sli_flag, MBX_POLL); return MBXERR_ERROR; } /* The server grabs the token and owns it until release */ psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; phba->sli.mbox_active = mboxq; spin_unlock_irqrestore(&phba->hbalock, iflag); /* * Initialize the bootstrap memory region to avoid stale data areas * in the mailbox post. Then copy the caller's mailbox contents to * the bmbx mailbox region. */ mbx_cmnd = bf_get(lpfc_mqe_command, mb); memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create)); lpfc_sli_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt, sizeof(struct lpfc_mqe)); /* Post the high mailbox dma address to the port and wait for ready. */ dma_address = &phba->sli4_hba.bmbx.dma_address; writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr); timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd) * 1000) + jiffies; do { bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr); db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg); if (!db_ready) msleep(2); if (time_after(jiffies, timeout)) { rc = MBXERR_ERROR; goto exit; } } while (!db_ready); /* Post the low mailbox dma address to the port. */ writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr); timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd) * 1000) + jiffies; do { bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr); db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg); if (!db_ready) msleep(2); if (time_after(jiffies, timeout)) { rc = MBXERR_ERROR; goto exit; } } while (!db_ready); /* * Read the CQ to ensure the mailbox has completed. * If so, update the mailbox status so that the upper layers * can complete the request normally. */ lpfc_sli_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb, sizeof(struct lpfc_mqe)); mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt; lpfc_sli_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe, sizeof(struct lpfc_mcqe)); mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe); /* Prefix the mailbox status with range x4000 to note SLI4 status. */ if (mcqe_status != MB_CQE_STATUS_SUCCESS) { bf_set(lpfc_mqe_status, mb, LPFC_MBX_ERROR_RANGE | mcqe_status); rc = MBXERR_ERROR; } lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0356 Mailbox cmd x%x (x%x) Status x%x " "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x" " x%x x%x CQ: x%x x%x x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd, lpfc_sli4_mbox_opcode_get(phba, mboxq), bf_get(lpfc_mqe_status, mb), mb->un.mb_words[0], mb->un.mb_words[1], mb->un.mb_words[2], mb->un.mb_words[3], mb->un.mb_words[4], mb->un.mb_words[5], mb->un.mb_words[6], mb->un.mb_words[7], mb->un.mb_words[8], mb->un.mb_words[9], mb->un.mb_words[10], mb->un.mb_words[11], mb->un.mb_words[12], mboxq->mcqe.word0, mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1, mboxq->mcqe.trailer); exit: /* We are holding the token, no needed for lock when release */ spin_lock_irqsave(&phba->hbalock, iflag); psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; phba->sli.mbox_active = NULL; spin_unlock_irqrestore(&phba->hbalock, iflag); return rc; } /** * lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware * @phba: Pointer to HBA context object. * @pmbox: Pointer to mailbox object. * @flag: Flag indicating how the mailbox need to be processed. * * This function is called by discovery code and HBA management code to submit * a mailbox command to firmware with SLI-4 interface spec. * * Return codes the caller owns the mailbox command after the return of the * function. **/ static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, uint32_t flag) { struct lpfc_sli *psli = &phba->sli; unsigned long iflags; int rc; rc = lpfc_mbox_dev_check(phba); if (unlikely(rc)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2544 Mailbox command x%x (x%x) " "cannot issue Data: x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mboxq->u.mb.mbxCommand, lpfc_sli4_mbox_opcode_get(phba, mboxq), psli->sli_flag, flag); goto out_not_finished; } /* Detect polling mode and jump to a handler */ if (!phba->sli4_hba.intr_enable) { if (flag == MBX_POLL) rc = lpfc_sli4_post_sync_mbox(phba, mboxq); else rc = -EIO; if (rc != MBX_SUCCESS) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2541 Mailbox command x%x " "(x%x) cannot issue Data: x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mboxq->u.mb.mbxCommand, lpfc_sli4_mbox_opcode_get(phba, mboxq), psli->sli_flag, flag); return rc; } else if (flag == MBX_POLL) { lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, "(%d):2542 Try to issue mailbox command " "x%x (x%x) synchronously ahead of async" "mailbox command queue: x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mboxq->u.mb.mbxCommand, lpfc_sli4_mbox_opcode_get(phba, mboxq), psli->sli_flag, flag); /* Try to block the asynchronous mailbox posting */ rc = lpfc_sli4_async_mbox_block(phba); if (!rc) { /* Successfully blocked, now issue sync mbox cmd */ rc = lpfc_sli4_post_sync_mbox(phba, mboxq); if (rc != MBX_SUCCESS) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2597 Mailbox command " "x%x (x%x) cannot issue " "Data: x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mboxq->u.mb.mbxCommand, lpfc_sli4_mbox_opcode_get(phba, mboxq), psli->sli_flag, flag); /* Unblock the async mailbox posting afterward */ lpfc_sli4_async_mbox_unblock(phba); } return rc; } /* Now, interrupt mode asynchrous mailbox command */ rc = lpfc_mbox_cmd_check(phba, mboxq); if (rc) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2543 Mailbox command x%x (x%x) " "cannot issue Data: x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mboxq->u.mb.mbxCommand, lpfc_sli4_mbox_opcode_get(phba, mboxq), psli->sli_flag, flag); goto out_not_finished; } /* Put the mailbox command to the driver internal FIFO */ psli->slistat.mbox_busy++; spin_lock_irqsave(&phba->hbalock, iflags); lpfc_mbox_put(phba, mboxq); spin_unlock_irqrestore(&phba->hbalock, iflags); lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0354 Mbox cmd issue - Enqueue Data: " "x%x (x%x) x%x x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0xffffff, bf_get(lpfc_mqe_command, &mboxq->u.mqe), lpfc_sli4_mbox_opcode_get(phba, mboxq), phba->pport->port_state, psli->sli_flag, MBX_NOWAIT); /* Wake up worker thread to transport mailbox command from head */ lpfc_worker_wake_up(phba); return MBX_BUSY; out_not_finished: return MBX_NOT_FINISHED; } /** * lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device * @phba: Pointer to HBA context object. * * This function is called by worker thread to send a mailbox command to * SLI4 HBA firmware. * **/ int lpfc_sli4_post_async_mbox(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; LPFC_MBOXQ_t *mboxq; int rc = MBX_SUCCESS; unsigned long iflags; struct lpfc_mqe *mqe; uint32_t mbx_cmnd; /* Check interrupt mode before post async mailbox command */ if (unlikely(!phba->sli4_hba.intr_enable)) return MBX_NOT_FINISHED; /* Check for mailbox command service token */ spin_lock_irqsave(&phba->hbalock, iflags); if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { spin_unlock_irqrestore(&phba->hbalock, iflags); return MBX_NOT_FINISHED; } if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { spin_unlock_irqrestore(&phba->hbalock, iflags); return MBX_NOT_FINISHED; } if (unlikely(phba->sli.mbox_active)) { spin_unlock_irqrestore(&phba->hbalock, iflags); lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0384 There is pending active mailbox cmd\n"); return MBX_NOT_FINISHED; } /* Take the mailbox command service token */ psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; /* Get the next mailbox command from head of queue */ mboxq = lpfc_mbox_get(phba); /* If no more mailbox command waiting for post, we're done */ if (!mboxq) { psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; spin_unlock_irqrestore(&phba->hbalock, iflags); return MBX_SUCCESS; } phba->sli.mbox_active = mboxq; spin_unlock_irqrestore(&phba->hbalock, iflags); /* Check device readiness for posting mailbox command */ rc = lpfc_mbox_dev_check(phba); if (unlikely(rc)) /* Driver clean routine will clean up pending mailbox */ goto out_not_finished; /* Prepare the mbox command to be posted */ mqe = &mboxq->u.mqe; mbx_cmnd = bf_get(lpfc_mqe_command, mqe); /* Start timer for the mbox_tmo and log some mailbox post messages */ mod_timer(&psli->mbox_tmo, (jiffies + (HZ * lpfc_mbox_tmo_val(phba, mbx_cmnd)))); lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, "(%d):0355 Mailbox cmd x%x (x%x) issue Data: " "x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd, lpfc_sli4_mbox_opcode_get(phba, mboxq), phba->pport->port_state, psli->sli_flag); if (mbx_cmnd != MBX_HEARTBEAT) { if (mboxq->vport) { lpfc_debugfs_disc_trc(mboxq->vport, LPFC_DISC_TRC_MBOX_VPORT, "MBOX Send vport: cmd:x%x mb:x%x x%x", mbx_cmnd, mqe->un.mb_words[0], mqe->un.mb_words[1]); } else { lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_MBOX, "MBOX Send: cmd:x%x mb:x%x x%x", mbx_cmnd, mqe->un.mb_words[0], mqe->un.mb_words[1]); } } psli->slistat.mbox_cmd++; /* Post the mailbox command to the port */ rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):2533 Mailbox command x%x (x%x) " "cannot issue Data: x%x x%x\n", mboxq->vport ? mboxq->vport->vpi : 0, mboxq->u.mb.mbxCommand, lpfc_sli4_mbox_opcode_get(phba, mboxq), psli->sli_flag, MBX_NOWAIT); goto out_not_finished; } return rc; out_not_finished: spin_lock_irqsave(&phba->hbalock, iflags); mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED; __lpfc_mbox_cmpl_put(phba, mboxq); /* Release the token */ psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; phba->sli.mbox_active = NULL; spin_unlock_irqrestore(&phba->hbalock, iflags); return MBX_NOT_FINISHED; } /** * lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command * @phba: Pointer to HBA context object. * @pmbox: Pointer to mailbox object. * @flag: Flag indicating how the mailbox need to be processed. * * This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from * the API jump table function pointer from the lpfc_hba struct. * * Return codes the caller owns the mailbox command after the return of the * function. **/ int lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag) { return phba->lpfc_sli_issue_mbox(phba, pmbox, flag); } /** * lpfc_mbox_api_table_setup - Set up mbox api fucntion jump table * @phba: The hba struct for which this call is being executed. * @dev_grp: The HBA PCI-Device group number. * * This routine sets up the mbox interface API function jump table in @phba * struct. * Returns: 0 - success, -ENODEV - failure. **/ int lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) { switch (dev_grp) { case LPFC_PCI_DEV_LP: phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3; phba->lpfc_sli_handle_slow_ring_event = lpfc_sli_handle_slow_ring_event_s3; phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3; phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3; phba->lpfc_sli_brdready = lpfc_sli_brdready_s3; break; case LPFC_PCI_DEV_OC: phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4; phba->lpfc_sli_handle_slow_ring_event = lpfc_sli_handle_slow_ring_event_s4; phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4; phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4; phba->lpfc_sli_brdready = lpfc_sli_brdready_s4; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1420 Invalid HBA PCI-device group: 0x%x\n", dev_grp); return -ENODEV; break; } return 0; } /** * __lpfc_sli_ringtx_put - Add an iocb to the txq * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @piocb: Pointer to address of newly added command iocb. * * This function is called with hbalock held to add a command * iocb to the txq when SLI layer cannot submit the command iocb * to the ring. **/ static void __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *piocb) { /* Insert the caller's iocb in the txq tail for later processing. */ list_add_tail(&piocb->list, &pring->txq); pring->txq_cnt++; } /** * lpfc_sli_next_iocb - Get the next iocb in the txq * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @piocb: Pointer to address of newly added command iocb. * * This function is called with hbalock held before a new * iocb is submitted to the firmware. This function checks * txq to flush the iocbs in txq to Firmware before * submitting new iocbs to the Firmware. * If there are iocbs in the txq which need to be submitted * to firmware, lpfc_sli_next_iocb returns the first element * of the txq after dequeuing it from txq. * If there is no iocb in the txq then the function will return * *piocb and *piocb is set to NULL. Caller needs to check * *piocb to find if there are more commands in the txq. **/ static struct lpfc_iocbq * lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq **piocb) { struct lpfc_iocbq * nextiocb; nextiocb = lpfc_sli_ringtx_get(phba, pring); if (!nextiocb) { nextiocb = *piocb; *piocb = NULL; } return nextiocb; } /** * __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb * @phba: Pointer to HBA context object. * @ring_number: SLI ring number to issue iocb on. * @piocb: Pointer to command iocb. * @flag: Flag indicating if this command can be put into txq. * * __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue * an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is * recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT * flag is turned on, the function returns IOCB_ERROR. When the link is down, * this function allows only iocbs for posting buffers. This function finds * next available slot in the command ring and posts the command to the * available slot and writes the port attention register to request HBA start * processing new iocb. If there is no slot available in the ring and * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise * the function returns IOCB_BUSY. * * This function is called with hbalock held. The function will return success * after it successfully submit the iocb to firmware or after adding to the * txq. **/ static int __lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number, struct lpfc_iocbq *piocb, uint32_t flag) { struct lpfc_iocbq *nextiocb; IOCB_t *iocb; struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number]; if (piocb->iocb_cmpl && (!piocb->vport) && (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT, "1807 IOCB x%x failed. No vport\n", piocb->iocb.ulpCommand); dump_stack(); return IOCB_ERROR; } /* If the PCI channel is in offline state, do not post iocbs. */ if (unlikely(pci_channel_offline(phba->pcidev))) return IOCB_ERROR; /* If HBA has a deferred error attention, fail the iocb. */ if (unlikely(phba->hba_flag & DEFER_ERATT)) return IOCB_ERROR; /* * We should never get an IOCB if we are in a < LINK_DOWN state */ if (unlikely(phba->link_state < LPFC_LINK_DOWN)) return IOCB_ERROR; /* * Check to see if we are blocking IOCB processing because of a * outstanding event. */ if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT)) goto iocb_busy; if (unlikely(phba->link_state == LPFC_LINK_DOWN)) { /* * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF * can be issued if the link is not up. */ switch (piocb->iocb.ulpCommand) { case CMD_GEN_REQUEST64_CR: case CMD_GEN_REQUEST64_CX: if (!(phba->sli.sli_flag & LPFC_MENLO_MAINT) || (piocb->iocb.un.genreq64.w5.hcsw.Rctl != FC_RCTL_DD_UNSOL_CMD) || (piocb->iocb.un.genreq64.w5.hcsw.Type != MENLO_TRANSPORT_TYPE)) goto iocb_busy; break; case CMD_QUE_RING_BUF_CN: case CMD_QUE_RING_BUF64_CN: /* * For IOCBs, like QUE_RING_BUF, that have no rsp ring * completion, iocb_cmpl MUST be 0. */ if (piocb->iocb_cmpl) piocb->iocb_cmpl = NULL; /*FALLTHROUGH*/ case CMD_CREATE_XRI_CR: case CMD_CLOSE_XRI_CN: case CMD_CLOSE_XRI_CX: break; default: goto iocb_busy; } /* * For FCP commands, we must be in a state where we can process link * attention events. */ } else if (unlikely(pring->ringno == phba->sli.fcp_ring && !(phba->sli.sli_flag & LPFC_PROCESS_LA))) { goto iocb_busy; } while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb))) lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); if (iocb) lpfc_sli_update_ring(phba, pring); else lpfc_sli_update_full_ring(phba, pring); if (!piocb) return IOCB_SUCCESS; goto out_busy; iocb_busy: pring->stats.iocb_cmd_delay++; out_busy: if (!(flag & SLI_IOCB_RET_IOCB)) { __lpfc_sli_ringtx_put(phba, pring, piocb); return IOCB_SUCCESS; } return IOCB_BUSY; } /** * lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl. * @phba: Pointer to HBA context object. * @piocb: Pointer to command iocb. * @sglq: Pointer to the scatter gather queue object. * * This routine converts the bpl or bde that is in the IOCB * to a sgl list for the sli4 hardware. The physical address * of the bpl/bde is converted back to a virtual address. * If the IOCB contains a BPL then the list of BDE's is * converted to sli4_sge's. If the IOCB contains a single * BDE then it is converted to a single sli_sge. * The IOCB is still in cpu endianess so the contents of * the bpl can be used without byte swapping. * * Returns valid XRI = Success, NO_XRI = Failure. **/ static uint16_t lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq, struct lpfc_sglq *sglq) { uint16_t xritag = NO_XRI; struct ulp_bde64 *bpl = NULL; struct ulp_bde64 bde; struct sli4_sge *sgl = NULL; IOCB_t *icmd; int numBdes = 0; int i = 0; if (!piocbq || !sglq) return xritag; sgl = (struct sli4_sge *)sglq->sgl; icmd = &piocbq->iocb; if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) { numBdes = icmd->un.genreq64.bdl.bdeSize / sizeof(struct ulp_bde64); /* The addrHigh and addrLow fields within the IOCB * have not been byteswapped yet so there is no * need to swap them back. */ bpl = (struct ulp_bde64 *) ((struct lpfc_dmabuf *)piocbq->context3)->virt; if (!bpl) return xritag; for (i = 0; i < numBdes; i++) { /* Should already be byte swapped. */ sgl->addr_hi = bpl->addrHigh; sgl->addr_lo = bpl->addrLow; if ((i+1) == numBdes) bf_set(lpfc_sli4_sge_last, sgl, 1); else bf_set(lpfc_sli4_sge_last, sgl, 0); sgl->word2 = cpu_to_le32(sgl->word2); /* swap the size field back to the cpu so we * can assign it to the sgl. */ bde.tus.w = le32_to_cpu(bpl->tus.w); sgl->sge_len = cpu_to_le32(bde.tus.f.bdeSize); bpl++; sgl++; } } else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) { /* The addrHigh and addrLow fields of the BDE have not * been byteswapped yet so they need to be swapped * before putting them in the sgl. */ sgl->addr_hi = cpu_to_le32(icmd->un.genreq64.bdl.addrHigh); sgl->addr_lo = cpu_to_le32(icmd->un.genreq64.bdl.addrLow); bf_set(lpfc_sli4_sge_last, sgl, 1); sgl->word2 = cpu_to_le32(sgl->word2); sgl->sge_len = cpu_to_le32(icmd->un.genreq64.bdl.bdeSize); } return sglq->sli4_xritag; } /** * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution * @phba: Pointer to HBA context object. * * This routine performs a round robin SCSI command to SLI4 FCP WQ index * distribution. This is called by __lpfc_sli_issue_iocb_s4() with the hbalock * held. * * Return: index into SLI4 fast-path FCP queue index. **/ static uint32_t lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba) { ++phba->fcp_qidx; if (phba->fcp_qidx >= phba->cfg_fcp_wq_count) phba->fcp_qidx = 0; return phba->fcp_qidx; } /** * lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry. * @phba: Pointer to HBA context object. * @piocb: Pointer to command iocb. * @wqe: Pointer to the work queue entry. * * This routine converts the iocb command to its Work Queue Entry * equivalent. The wqe pointer should not have any fields set when * this routine is called because it will memcpy over them. * This routine does not set the CQ_ID or the WQEC bits in the * wqe. * * Returns: 0 = Success, IOCB_ERROR = Failure. **/ static int lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq, union lpfc_wqe *wqe) { uint32_t xmit_len = 0, total_len = 0; uint8_t ct = 0; uint32_t fip; uint32_t abort_tag; uint8_t command_type = ELS_COMMAND_NON_FIP; uint8_t cmnd; uint16_t xritag; struct ulp_bde64 *bpl = NULL; uint32_t els_id = ELS_ID_DEFAULT; int numBdes, i; struct ulp_bde64 bde; fip = phba->hba_flag & HBA_FIP_SUPPORT; /* The fcp commands will set command type */ if (iocbq->iocb_flag & LPFC_IO_FCP) command_type = FCP_COMMAND; else if (fip && (iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK)) command_type = ELS_COMMAND_FIP; else command_type = ELS_COMMAND_NON_FIP; /* Some of the fields are in the right position already */ memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe)); abort_tag = (uint32_t) iocbq->iotag; xritag = iocbq->sli4_xritag; wqe->words[7] = 0; /* The ct field has moved so reset */ /* words0-2 bpl convert bde */ if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) { numBdes = iocbq->iocb.un.genreq64.bdl.bdeSize / sizeof(struct ulp_bde64); bpl = (struct ulp_bde64 *) ((struct lpfc_dmabuf *)iocbq->context3)->virt; if (!bpl) return IOCB_ERROR; /* Should already be byte swapped. */ wqe->generic.bde.addrHigh = le32_to_cpu(bpl->addrHigh); wqe->generic.bde.addrLow = le32_to_cpu(bpl->addrLow); /* swap the size field back to the cpu so we * can assign it to the sgl. */ wqe->generic.bde.tus.w = le32_to_cpu(bpl->tus.w); xmit_len = wqe->generic.bde.tus.f.bdeSize; total_len = 0; for (i = 0; i < numBdes; i++) { bde.tus.w = le32_to_cpu(bpl[i].tus.w); total_len += bde.tus.f.bdeSize; } } else xmit_len = iocbq->iocb.un.fcpi64.bdl.bdeSize; iocbq->iocb.ulpIoTag = iocbq->iotag; cmnd = iocbq->iocb.ulpCommand; switch (iocbq->iocb.ulpCommand) { case CMD_ELS_REQUEST64_CR: if (!iocbq->iocb.ulpLe) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2007 Only Limited Edition cmd Format" " supported 0x%x\n", iocbq->iocb.ulpCommand); return IOCB_ERROR; } wqe->els_req.payload_len = xmit_len; /* Els_reguest64 has a TMO */ bf_set(wqe_tmo, &wqe->els_req.wqe_com, iocbq->iocb.ulpTimeout); /* Need a VF for word 4 set the vf bit*/ bf_set(els_req64_vf, &wqe->els_req, 0); /* And a VFID for word 12 */ bf_set(els_req64_vfid, &wqe->els_req, 0); /* * Set ct field to 3, indicates that the context_tag field * contains the FCFI and remote N_Port_ID is * in word 5. */ ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l); bf_set(lpfc_wqe_gen_context, &wqe->generic, iocbq->iocb.ulpContext); bf_set(lpfc_wqe_gen_ct, &wqe->generic, ct); bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0); /* CCP CCPE PV PRI in word10 were set in the memcpy */ if (command_type == ELS_COMMAND_FIP) { els_id = ((iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK) >> LPFC_FIP_ELS_ID_SHIFT); } bf_set(lpfc_wqe_gen_els_id, &wqe->generic, els_id); break; case CMD_XMIT_SEQUENCE64_CX: bf_set(lpfc_wqe_gen_context, &wqe->generic, iocbq->iocb.un.ulpWord[3]); wqe->generic.word3 = 0; bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext); /* The entire sequence is transmitted for this IOCB */ xmit_len = total_len; cmnd = CMD_XMIT_SEQUENCE64_CR; case CMD_XMIT_SEQUENCE64_CR: /* word3 iocb=io_tag32 wqe=payload_offset */ /* payload offset used for multilpe outstanding * sequences on the same exchange */ wqe->words[3] = 0; /* word4 relative_offset memcpy */ /* word5 r_ctl/df_ctl memcpy */ bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0); wqe->xmit_sequence.xmit_len = xmit_len; command_type = OTHER_COMMAND; break; case CMD_XMIT_BCAST64_CN: /* word3 iocb=iotag32 wqe=payload_len */ wqe->words[3] = 0; /* no definition for this in wqe */ /* word4 iocb=rsvd wqe=rsvd */ /* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */ /* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */ bf_set(lpfc_wqe_gen_ct, &wqe->generic, ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); break; case CMD_FCP_IWRITE64_CR: command_type = FCP_COMMAND_DATA_OUT; /* The struct for wqe fcp_iwrite has 3 fields that are somewhat * confusing. * word3 is payload_len: byte offset to the sgl entry for the * fcp_command. * word4 is total xfer len, same as the IOCB->ulpParameter. * word5 is initial xfer len 0 = wait for xfer-ready */ /* Always wait for xfer-ready before sending data */ wqe->fcp_iwrite.initial_xfer_len = 0; /* word 4 (xfer length) should have been set on the memcpy */ /* allow write to fall through to read */ case CMD_FCP_IREAD64_CR: /* FCP_CMD is always the 1st sgl entry */ wqe->fcp_iread.payload_len = xmit_len + sizeof(struct fcp_rsp); /* word 4 (xfer length) should have been set on the memcpy */ bf_set(lpfc_wqe_gen_erp, &wqe->generic, iocbq->iocb.ulpFCP2Rcvy); bf_set(lpfc_wqe_gen_lnk, &wqe->generic, iocbq->iocb.ulpXS); /* The XC bit and the XS bit are similar. The driver never * tracked whether or not the exchange was previouslly open. * XC = Exchange create, 0 is create. 1 is already open. * XS = link cmd: 1 do not close the exchange after command. * XS = 0 close exchange when command completes. * The only time we would not set the XC bit is when the XS bit * is set and we are sending our 2nd or greater command on * this exchange. */ /* Always open the exchange */ bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0); wqe->words[10] &= 0xffff0000; /* zero out ebde count */ bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU); break; case CMD_FCP_ICMND64_CR: /* Always open the exchange */ bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0); wqe->words[4] = 0; wqe->words[10] &= 0xffff0000; /* zero out ebde count */ bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0); break; case CMD_GEN_REQUEST64_CR: /* word3 command length is described as byte offset to the * rsp_data. Would always be 16, sizeof(struct sli4_sge) * sgl[0] = cmnd * sgl[1] = rsp. * */ wqe->gen_req.command_len = xmit_len; /* Word4 parameter copied in the memcpy */ /* Word5 [rctl, type, df_ctl, la] copied in memcpy */ /* word6 context tag copied in memcpy */ if (iocbq->iocb.ulpCt_h || iocbq->iocb.ulpCt_l) { ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l); lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2015 Invalid CT %x command 0x%x\n", ct, iocbq->iocb.ulpCommand); return IOCB_ERROR; } bf_set(lpfc_wqe_gen_ct, &wqe->generic, 0); bf_set(wqe_tmo, &wqe->gen_req.wqe_com, iocbq->iocb.ulpTimeout); bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU); command_type = OTHER_COMMAND; break; case CMD_XMIT_ELS_RSP64_CX: /* words0-2 BDE memcpy */ /* word3 iocb=iotag32 wqe=rsvd */ wqe->words[3] = 0; /* word4 iocb=did wge=rsvd. */ wqe->words[4] = 0; /* word5 iocb=rsvd wge=did */ bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest, iocbq->iocb.un.elsreq64.remoteID); bf_set(lpfc_wqe_gen_ct, &wqe->generic, ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU); bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext); if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l) bf_set(lpfc_wqe_gen_context, &wqe->generic, iocbq->vport->vpi + phba->vpi_base); command_type = OTHER_COMMAND; break; case CMD_CLOSE_XRI_CN: case CMD_ABORT_XRI_CN: case CMD_ABORT_XRI_CX: /* words 0-2 memcpy should be 0 rserved */ /* port will send abts */ if (iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN) /* * The link is down so the fw does not need to send abts * on the wire. */ bf_set(abort_cmd_ia, &wqe->abort_cmd, 1); else bf_set(abort_cmd_ia, &wqe->abort_cmd, 0); bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG); wqe->words[5] = 0; bf_set(lpfc_wqe_gen_ct, &wqe->generic, ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); abort_tag = iocbq->iocb.un.acxri.abortIoTag; /* * The abort handler will send us CMD_ABORT_XRI_CN or * CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX */ bf_set(lpfc_wqe_gen_command, &wqe->generic, CMD_ABORT_XRI_CX); cmnd = CMD_ABORT_XRI_CX; command_type = OTHER_COMMAND; xritag = 0; break; case CMD_XMIT_BLS_RSP64_CX: /* As BLS ABTS-ACC WQE is very different from other WQEs, * we re-construct this WQE here based on information in * iocbq from scratch. */ memset(wqe, 0, sizeof(union lpfc_wqe)); /* OX_ID is invariable to who sent ABTS to CT exchange */ bf_set(xmit_bls_rsp64_oxid, &wqe->xmit_bls_rsp, bf_get(lpfc_abts_oxid, &iocbq->iocb.un.bls_acc)); if (bf_get(lpfc_abts_orig, &iocbq->iocb.un.bls_acc) == LPFC_ABTS_UNSOL_INT) { /* ABTS sent by initiator to CT exchange, the * RX_ID field will be filled with the newly * allocated responder XRI. */ bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp, iocbq->sli4_xritag); } else { /* ABTS sent by responder to CT exchange, the * RX_ID field will be filled with the responder * RX_ID from ABTS. */ bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp, bf_get(lpfc_abts_rxid, &iocbq->iocb.un.bls_acc)); } bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff); bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1); bf_set(wqe_ctxt_tag, &wqe->xmit_bls_rsp.wqe_com, iocbq->iocb.ulpContext); /* Overwrite the pre-set comnd type with OTHER_COMMAND */ command_type = OTHER_COMMAND; break; case CMD_XRI_ABORTED_CX: case CMD_CREATE_XRI_CR: /* Do we expect to use this? */ /* words0-2 are all 0's no bde */ /* word3 and word4 are rsvrd */ wqe->words[3] = 0; wqe->words[4] = 0; /* word5 iocb=rsvd wge=did */ /* There is no remote port id in the IOCB? */ /* Let this fall through and fail */ case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */ case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */ case CMD_FCP_TRSP64_CX: /* Target mode rcv */ case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */ default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2014 Invalid command 0x%x\n", iocbq->iocb.ulpCommand); return IOCB_ERROR; break; } bf_set(lpfc_wqe_gen_xri, &wqe->generic, xritag); bf_set(lpfc_wqe_gen_request_tag, &wqe->generic, iocbq->iotag); wqe->generic.abort_tag = abort_tag; bf_set(lpfc_wqe_gen_cmd_type, &wqe->generic, command_type); bf_set(lpfc_wqe_gen_command, &wqe->generic, cmnd); bf_set(lpfc_wqe_gen_class, &wqe->generic, iocbq->iocb.ulpClass); bf_set(lpfc_wqe_gen_cq_id, &wqe->generic, LPFC_WQE_CQ_ID_DEFAULT); return 0; } /** * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb * @phba: Pointer to HBA context object. * @ring_number: SLI ring number to issue iocb on. * @piocb: Pointer to command iocb. * @flag: Flag indicating if this command can be put into txq. * * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue * an iocb command to an HBA with SLI-4 interface spec. * * This function is called with hbalock held. The function will return success * after it successfully submit the iocb to firmware or after adding to the * txq. **/ static int __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number, struct lpfc_iocbq *piocb, uint32_t flag) { struct lpfc_sglq *sglq; uint16_t xritag; union lpfc_wqe wqe; struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number]; if (piocb->sli4_xritag == NO_XRI) { if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) sglq = NULL; else { sglq = __lpfc_sli_get_sglq(phba); if (!sglq) return IOCB_ERROR; piocb->sli4_xritag = sglq->sli4_xritag; } } else if (piocb->iocb_flag & LPFC_IO_FCP) { sglq = NULL; /* These IO's already have an XRI and * a mapped sgl. */ } else { /* This is a continuation of a commandi,(CX) so this * sglq is on the active list */ sglq = __lpfc_get_active_sglq(phba, piocb->sli4_xritag); if (!sglq) return IOCB_ERROR; } if (sglq) { xritag = lpfc_sli4_bpl2sgl(phba, piocb, sglq); if (xritag != sglq->sli4_xritag) return IOCB_ERROR; } if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe)) return IOCB_ERROR; if ((piocb->iocb_flag & LPFC_IO_FCP) || (piocb->iocb_flag & LPFC_USE_FCPWQIDX)) { /* * For FCP command IOCB, get a new WQ index to distribute * WQE across the WQsr. On the other hand, for abort IOCB, * it carries the same WQ index to the original command * IOCB. */ if (piocb->iocb_flag & LPFC_IO_FCP) piocb->fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba); if (lpfc_sli4_wq_put(phba->sli4_hba.fcp_wq[piocb->fcp_wqidx], &wqe)) return IOCB_ERROR; } else { if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe)) return IOCB_ERROR; } lpfc_sli_ringtxcmpl_put(phba, pring, piocb); return 0; } /** * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb * * This routine wraps the actual lockless version for issusing IOCB function * pointer from the lpfc_hba struct. * * Return codes: * IOCB_ERROR - Error * IOCB_SUCCESS - Success * IOCB_BUSY - Busy **/ static inline int __lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number, struct lpfc_iocbq *piocb, uint32_t flag) { return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag); } /** * lpfc_sli_api_table_setup - Set up sli api fucntion jump table * @phba: The hba struct for which this call is being executed. * @dev_grp: The HBA PCI-Device group number. * * This routine sets up the SLI interface API function jump table in @phba * struct. * Returns: 0 - success, -ENODEV - failure. **/ int lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) { switch (dev_grp) { case LPFC_PCI_DEV_LP: phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3; phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3; break; case LPFC_PCI_DEV_OC: phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4; phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1419 Invalid HBA PCI-device group: 0x%x\n", dev_grp); return -ENODEV; break; } phba->lpfc_get_iocb_from_iocbq = lpfc_get_iocb_from_iocbq; return 0; } /** * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @piocb: Pointer to command iocb. * @flag: Flag indicating if this command can be put into txq. * * lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb * function. This function gets the hbalock and calls * __lpfc_sli_issue_iocb function and will return the error returned * by __lpfc_sli_issue_iocb function. This wrapper is used by * functions which do not hold hbalock. **/ int lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number, struct lpfc_iocbq *piocb, uint32_t flag) { unsigned long iflags; int rc; spin_lock_irqsave(&phba->hbalock, iflags); rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag); spin_unlock_irqrestore(&phba->hbalock, iflags); return rc; } /** * lpfc_extra_ring_setup - Extra ring setup function * @phba: Pointer to HBA context object. * * This function is called while driver attaches with the * HBA to setup the extra ring. The extra ring is used * only when driver needs to support target mode functionality * or IP over FC functionalities. * * This function is called with no lock held. **/ static int lpfc_extra_ring_setup( struct lpfc_hba *phba) { struct lpfc_sli *psli; struct lpfc_sli_ring *pring; psli = &phba->sli; /* Adjust cmd/rsp ring iocb entries more evenly */ /* Take some away from the FCP ring */ pring = &psli->ring[psli->fcp_ring]; pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES; pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES; pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES; pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES; /* and give them to the extra ring */ pring = &psli->ring[psli->extra_ring]; pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES; pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES; pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES; pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES; /* Setup default profile for this ring */ pring->iotag_max = 4096; pring->num_mask = 1; pring->prt[0].profile = 0; /* Mask 0 */ pring->prt[0].rctl = phba->cfg_multi_ring_rctl; pring->prt[0].type = phba->cfg_multi_ring_type; pring->prt[0].lpfc_sli_rcv_unsol_event = NULL; return 0; } /** * lpfc_sli_async_event_handler - ASYNC iocb handler function * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @iocbq: Pointer to iocb object. * * This function is called by the slow ring event handler * function when there is an ASYNC event iocb in the ring. * This function is called with no lock held. * Currently this function handles only temperature related * ASYNC events. The function decodes the temperature sensor * event message and posts events for the management applications. **/ static void lpfc_sli_async_event_handler(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq) { IOCB_t *icmd; uint16_t evt_code; uint16_t temp; struct temp_event temp_event_data; struct Scsi_Host *shost; uint32_t *iocb_w; icmd = &iocbq->iocb; evt_code = icmd->un.asyncstat.evt_code; temp = icmd->ulpContext; if ((evt_code != ASYNC_TEMP_WARN) && (evt_code != ASYNC_TEMP_SAFE)) { iocb_w = (uint32_t *) icmd; lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0346 Ring %d handler: unexpected ASYNC_STATUS" " evt_code 0x%x\n" "W0 0x%08x W1 0x%08x W2 0x%08x W3 0x%08x\n" "W4 0x%08x W5 0x%08x W6 0x%08x W7 0x%08x\n" "W8 0x%08x W9 0x%08x W10 0x%08x W11 0x%08x\n" "W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n", pring->ringno, icmd->un.asyncstat.evt_code, iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3], iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7], iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11], iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]); return; } temp_event_data.data = (uint32_t)temp; temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT; if (evt_code == ASYNC_TEMP_WARN) { temp_event_data.event_code = LPFC_THRESHOLD_TEMP; lpfc_printf_log(phba, KERN_ERR, LOG_TEMP, "0347 Adapter is very hot, please take " "corrective action. temperature : %d Celsius\n", temp); } if (evt_code == ASYNC_TEMP_SAFE) { temp_event_data.event_code = LPFC_NORMAL_TEMP; lpfc_printf_log(phba, KERN_ERR, LOG_TEMP, "0340 Adapter temperature is OK now. " "temperature : %d Celsius\n", temp); } /* Send temperature change event to applications */ shost = lpfc_shost_from_vport(phba->pport); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(temp_event_data), (char *) &temp_event_data, LPFC_NL_VENDOR_ID); } /** * lpfc_sli_setup - SLI ring setup function * @phba: Pointer to HBA context object. * * lpfc_sli_setup sets up rings of the SLI interface with * number of iocbs per ring and iotags. This function is * called while driver attach to the HBA and before the * interrupts are enabled. So there is no need for locking. * * This function always returns 0. **/ int lpfc_sli_setup(struct lpfc_hba *phba) { int i, totiocbsize = 0; struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; psli->num_rings = MAX_CONFIGURED_RINGS; psli->sli_flag = 0; psli->fcp_ring = LPFC_FCP_RING; psli->next_ring = LPFC_FCP_NEXT_RING; psli->extra_ring = LPFC_EXTRA_RING; psli->iocbq_lookup = NULL; psli->iocbq_lookup_len = 0; psli->last_iotag = 0; for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; switch (i) { case LPFC_FCP_RING: /* ring 0 - FCP */ /* numCiocb and numRiocb are used in config_port */ pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES; pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES; pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES; pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES; pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES; pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES; pring->sizeCiocb = (phba->sli_rev == 3) ? SLI3_IOCB_CMD_SIZE : SLI2_IOCB_CMD_SIZE; pring->sizeRiocb = (phba->sli_rev == 3) ? SLI3_IOCB_RSP_SIZE : SLI2_IOCB_RSP_SIZE; pring->iotag_ctr = 0; pring->iotag_max = (phba->cfg_hba_queue_depth * 2); pring->fast_iotag = pring->iotag_max; pring->num_mask = 0; break; case LPFC_EXTRA_RING: /* ring 1 - EXTRA */ /* numCiocb and numRiocb are used in config_port */ pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES; pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES; pring->sizeCiocb = (phba->sli_rev == 3) ? SLI3_IOCB_CMD_SIZE : SLI2_IOCB_CMD_SIZE; pring->sizeRiocb = (phba->sli_rev == 3) ? SLI3_IOCB_RSP_SIZE : SLI2_IOCB_RSP_SIZE; pring->iotag_max = phba->cfg_hba_queue_depth; pring->num_mask = 0; break; case LPFC_ELS_RING: /* ring 2 - ELS / CT */ /* numCiocb and numRiocb are used in config_port */ pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES; pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES; pring->sizeCiocb = (phba->sli_rev == 3) ? SLI3_IOCB_CMD_SIZE : SLI2_IOCB_CMD_SIZE; pring->sizeRiocb = (phba->sli_rev == 3) ? SLI3_IOCB_RSP_SIZE : SLI2_IOCB_RSP_SIZE; pring->fast_iotag = 0; pring->iotag_ctr = 0; pring->iotag_max = 4096; pring->lpfc_sli_rcv_async_status = lpfc_sli_async_event_handler; pring->num_mask = LPFC_MAX_RING_MASK; pring->prt[0].profile = 0; /* Mask 0 */ pring->prt[0].rctl = FC_RCTL_ELS_REQ; pring->prt[0].type = FC_TYPE_ELS; pring->prt[0].lpfc_sli_rcv_unsol_event = lpfc_els_unsol_event; pring->prt[1].profile = 0; /* Mask 1 */ pring->prt[1].rctl = FC_RCTL_ELS_REP; pring->prt[1].type = FC_TYPE_ELS; pring->prt[1].lpfc_sli_rcv_unsol_event = lpfc_els_unsol_event; pring->prt[2].profile = 0; /* Mask 2 */ /* NameServer Inquiry */ pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL; /* NameServer */ pring->prt[2].type = FC_TYPE_CT; pring->prt[2].lpfc_sli_rcv_unsol_event = lpfc_ct_unsol_event; pring->prt[3].profile = 0; /* Mask 3 */ /* NameServer response */ pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL; /* NameServer */ pring->prt[3].type = FC_TYPE_CT; pring->prt[3].lpfc_sli_rcv_unsol_event = lpfc_ct_unsol_event; /* abort unsolicited sequence */ pring->prt[4].profile = 0; /* Mask 4 */ pring->prt[4].rctl = FC_RCTL_BA_ABTS; pring->prt[4].type = FC_TYPE_BLS; pring->prt[4].lpfc_sli_rcv_unsol_event = lpfc_sli4_ct_abort_unsol_event; break; } totiocbsize += (pring->numCiocb * pring->sizeCiocb) + (pring->numRiocb * pring->sizeRiocb); } if (totiocbsize > MAX_SLIM_IOCB_SIZE) { /* Too many cmd / rsp ring entries in SLI2 SLIM */ printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in " "SLI2 SLIM Data: x%x x%lx\n", phba->brd_no, totiocbsize, (unsigned long) MAX_SLIM_IOCB_SIZE); } if (phba->cfg_multi_ring_support == 2) lpfc_extra_ring_setup(phba); return 0; } /** * lpfc_sli_queue_setup - Queue initialization function * @phba: Pointer to HBA context object. * * lpfc_sli_queue_setup sets up mailbox queues and iocb queues for each * ring. This function also initializes ring indices of each ring. * This function is called during the initialization of the SLI * interface of an HBA. * This function is called with no lock held and always returns * 1. **/ int lpfc_sli_queue_setup(struct lpfc_hba *phba) { struct lpfc_sli *psli; struct lpfc_sli_ring *pring; int i; psli = &phba->sli; spin_lock_irq(&phba->hbalock); INIT_LIST_HEAD(&psli->mboxq); INIT_LIST_HEAD(&psli->mboxq_cmpl); /* Initialize list headers for txq and txcmplq as double linked lists */ for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; pring->ringno = i; pring->next_cmdidx = 0; pring->local_getidx = 0; pring->cmdidx = 0; INIT_LIST_HEAD(&pring->txq); INIT_LIST_HEAD(&pring->txcmplq); INIT_LIST_HEAD(&pring->iocb_continueq); INIT_LIST_HEAD(&pring->iocb_continue_saveq); INIT_LIST_HEAD(&pring->postbufq); } spin_unlock_irq(&phba->hbalock); return 1; } /** * lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system * @phba: Pointer to HBA context object. * * This routine flushes the mailbox command subsystem. It will unconditionally * flush all the mailbox commands in the three possible stages in the mailbox * command sub-system: pending mailbox command queue; the outstanding mailbox * command; and completed mailbox command queue. It is caller's responsibility * to make sure that the driver is in the proper state to flush the mailbox * command sub-system. Namely, the posting of mailbox commands into the * pending mailbox command queue from the various clients must be stopped; * either the HBA is in a state that it will never works on the outstanding * mailbox command (such as in EEH or ERATT conditions) or the outstanding * mailbox command has been completed. **/ static void lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba) { LIST_HEAD(completions); struct lpfc_sli *psli = &phba->sli; LPFC_MBOXQ_t *pmb; unsigned long iflag; /* Flush all the mailbox commands in the mbox system */ spin_lock_irqsave(&phba->hbalock, iflag); /* The pending mailbox command queue */ list_splice_init(&phba->sli.mboxq, &completions); /* The outstanding active mailbox command */ if (psli->mbox_active) { list_add_tail(&psli->mbox_active->list, &completions); psli->mbox_active = NULL; psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; } /* The completed mailbox command queue */ list_splice_init(&phba->sli.mboxq_cmpl, &completions); spin_unlock_irqrestore(&phba->hbalock, iflag); /* Return all flushed mailbox commands with MBX_NOT_FINISHED status */ while (!list_empty(&completions)) { list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list); pmb->u.mb.mbxStatus = MBX_NOT_FINISHED; if (pmb->mbox_cmpl) pmb->mbox_cmpl(phba, pmb); } } /** * lpfc_sli_host_down - Vport cleanup function * @vport: Pointer to virtual port object. * * lpfc_sli_host_down is called to clean up the resources * associated with a vport before destroying virtual * port data structures. * This function does following operations: * - Free discovery resources associated with this virtual * port. * - Free iocbs associated with this virtual port in * the txq. * - Send abort for all iocb commands associated with this * vport in txcmplq. * * This function is called with no lock held and always returns 1. **/ int lpfc_sli_host_down(struct lpfc_vport *vport) { LIST_HEAD(completions); struct lpfc_hba *phba = vport->phba; struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; struct lpfc_iocbq *iocb, *next_iocb; int i; unsigned long flags = 0; uint16_t prev_pring_flag; lpfc_cleanup_discovery_resources(vport); spin_lock_irqsave(&phba->hbalock, flags); for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; prev_pring_flag = pring->flag; /* Only slow rings */ if (pring->ringno == LPFC_ELS_RING) { pring->flag |= LPFC_DEFERRED_RING_EVENT; /* Set the lpfc data pending flag */ set_bit(LPFC_DATA_READY, &phba->data_flags); } /* * Error everything on the txq since these iocbs have not been * given to the FW yet. */ list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { if (iocb->vport != vport) continue; list_move_tail(&iocb->list, &completions); pring->txq_cnt--; } /* Next issue ABTS for everything on the txcmplq */ list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { if (iocb->vport != vport) continue; lpfc_sli_issue_abort_iotag(phba, pring, iocb); } pring->flag = prev_pring_flag; } spin_unlock_irqrestore(&phba->hbalock, flags); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_DOWN); return 1; } /** * lpfc_sli_hba_down - Resource cleanup function for the HBA * @phba: Pointer to HBA context object. * * This function cleans up all iocb, buffers, mailbox commands * while shutting down the HBA. This function is called with no * lock held and always returns 1. * This function does the following to cleanup driver resources: * - Free discovery resources for each virtual port * - Cleanup any pending fabric iocbs * - Iterate through the iocb txq and free each entry * in the list. * - Free up any buffer posted to the HBA * - Free mailbox commands in the mailbox queue. **/ int lpfc_sli_hba_down(struct lpfc_hba *phba) { LIST_HEAD(completions); struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; struct lpfc_dmabuf *buf_ptr; unsigned long flags = 0; int i; /* Shutdown the mailbox command sub-system */ lpfc_sli_mbox_sys_shutdown(phba); lpfc_hba_down_prep(phba); lpfc_fabric_abort_hba(phba); spin_lock_irqsave(&phba->hbalock, flags); for (i = 0; i < psli->num_rings; i++) { pring = &psli->ring[i]; /* Only slow rings */ if (pring->ringno == LPFC_ELS_RING) { pring->flag |= LPFC_DEFERRED_RING_EVENT; /* Set the lpfc data pending flag */ set_bit(LPFC_DATA_READY, &phba->data_flags); } /* * Error everything on the txq since these iocbs have not been * given to the FW yet. */ list_splice_init(&pring->txq, &completions); pring->txq_cnt = 0; } spin_unlock_irqrestore(&phba->hbalock, flags); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_DOWN); spin_lock_irqsave(&phba->hbalock, flags); list_splice_init(&phba->elsbuf, &completions); phba->elsbuf_cnt = 0; phba->elsbuf_prev_cnt = 0; spin_unlock_irqrestore(&phba->hbalock, flags); while (!list_empty(&completions)) { list_remove_head(&completions, buf_ptr, struct lpfc_dmabuf, list); lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); kfree(buf_ptr); } /* Return any active mbox cmds */ del_timer_sync(&psli->mbox_tmo); spin_lock_irqsave(&phba->pport->work_port_lock, flags); phba->pport->work_port_events &= ~WORKER_MBOX_TMO; spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); return 1; } /** * lpfc_sli4_hba_down - PCI function resource cleanup for the SLI4 HBA * @phba: Pointer to HBA context object. * * This function cleans up all queues, iocb, buffers, mailbox commands while * shutting down the SLI4 HBA FCoE function. This function is called with no * lock held and always returns 1. * * This function does the following to cleanup driver FCoE function resources: * - Free discovery resources for each virtual port * - Cleanup any pending fabric iocbs * - Iterate through the iocb txq and free each entry in the list. * - Free up any buffer posted to the HBA. * - Clean up all the queue entries: WQ, RQ, MQ, EQ, CQ, etc. * - Free mailbox commands in the mailbox queue. **/ int lpfc_sli4_hba_down(struct lpfc_hba *phba) { /* Stop the SLI4 device port */ lpfc_stop_port(phba); /* Tear down the queues in the HBA */ lpfc_sli4_queue_unset(phba); /* unregister default FCFI from the HBA */ lpfc_sli4_fcfi_unreg(phba, phba->fcf.fcfi); return 1; } /** * lpfc_sli_pcimem_bcopy - SLI memory copy function * @srcp: Source memory pointer. * @destp: Destination memory pointer. * @cnt: Number of words required to be copied. * * This function is used for copying data between driver memory * and the SLI memory. This function also changes the endianness * of each word if native endianness is different from SLI * endianness. This function can be called with or without * lock. **/ void lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt) { uint32_t *src = srcp; uint32_t *dest = destp; uint32_t ldata; int i; for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) { ldata = *src; ldata = le32_to_cpu(ldata); *dest = ldata; src++; dest++; } } /** * lpfc_sli_bemem_bcopy - SLI memory copy function * @srcp: Source memory pointer. * @destp: Destination memory pointer. * @cnt: Number of words required to be copied. * * This function is used for copying data between a data structure * with big endian representation to local endianness. * This function can be called with or without lock. **/ void lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt) { uint32_t *src = srcp; uint32_t *dest = destp; uint32_t ldata; int i; for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) { ldata = *src; ldata = be32_to_cpu(ldata); *dest = ldata; src++; dest++; } } /** * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @mp: Pointer to driver buffer object. * * This function is called with no lock held. * It always return zero after adding the buffer to the postbufq * buffer list. **/ int lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_dmabuf *mp) { /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up later */ spin_lock_irq(&phba->hbalock); list_add_tail(&mp->list, &pring->postbufq); pring->postbufq_cnt++; spin_unlock_irq(&phba->hbalock); return 0; } /** * lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer * @phba: Pointer to HBA context object. * * When HBQ is enabled, buffers are searched based on tags. This function * allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The * tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag * does not conflict with tags of buffer posted for unsolicited events. * The function returns the allocated tag. The function is called with * no locks held. **/ uint32_t lpfc_sli_get_buffer_tag(struct lpfc_hba *phba) { spin_lock_irq(&phba->hbalock); phba->buffer_tag_count++; /* * Always set the QUE_BUFTAG_BIT to distiguish between * a tag assigned by HBQ. */ phba->buffer_tag_count |= QUE_BUFTAG_BIT; spin_unlock_irq(&phba->hbalock); return phba->buffer_tag_count; } /** * lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @tag: Buffer tag. * * Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq * list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX * iocb is posted to the response ring with the tag of the buffer. * This function searches the pring->postbufq list using the tag * to find buffer associated with CMD_IOCB_RET_XRI64_CX * iocb. If the buffer is found then lpfc_dmabuf object of the * buffer is returned to the caller else NULL is returned. * This function is called with no lock held. **/ struct lpfc_dmabuf * lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, uint32_t tag) { struct lpfc_dmabuf *mp, *next_mp; struct list_head *slp = &pring->postbufq; /* Search postbufq, from the begining, looking for a match on tag */ spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { if (mp->buffer_tag == tag) { list_del_init(&mp->list); pring->postbufq_cnt--; spin_unlock_irq(&phba->hbalock); return mp; } } spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0402 Cannot find virtual addr for buffer tag on " "ring %d Data x%lx x%p x%p x%x\n", pring->ringno, (unsigned long) tag, slp->next, slp->prev, pring->postbufq_cnt); return NULL; } /** * lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @phys: DMA address of the buffer. * * This function searches the buffer list using the dma_address * of unsolicited event to find the driver's lpfc_dmabuf object * corresponding to the dma_address. The function returns the * lpfc_dmabuf object if a buffer is found else it returns NULL. * This function is called by the ct and els unsolicited event * handlers to get the buffer associated with the unsolicited * event. * * This function is called with no lock held. **/ struct lpfc_dmabuf * lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, dma_addr_t phys) { struct lpfc_dmabuf *mp, *next_mp; struct list_head *slp = &pring->postbufq; /* Search postbufq, from the begining, looking for a match on phys */ spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { if (mp->phys == phys) { list_del_init(&mp->list); pring->postbufq_cnt--; spin_unlock_irq(&phba->hbalock); return mp; } } spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0410 Cannot find virtual addr for mapped buf on " "ring %d Data x%llx x%p x%p x%x\n", pring->ringno, (unsigned long long)phys, slp->next, slp->prev, pring->postbufq_cnt); return NULL; } /** * lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs * @phba: Pointer to HBA context object. * @cmdiocb: Pointer to driver command iocb object. * @rspiocb: Pointer to driver response iocb object. * * This function is the completion handler for the abort iocbs for * ELS commands. This function is called from the ELS ring event * handler with no lock held. This function frees memory resources * associated with the abort iocb. **/ static void lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { IOCB_t *irsp = &rspiocb->iocb; uint16_t abort_iotag, abort_context; struct lpfc_iocbq *abort_iocb; struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; abort_iocb = NULL; if (irsp->ulpStatus) { abort_context = cmdiocb->iocb.un.acxri.abortContextTag; abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag; spin_lock_irq(&phba->hbalock); if (phba->sli_rev < LPFC_SLI_REV4) { if (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag) abort_iocb = phba->sli.iocbq_lookup[abort_iotag]; } else /* For sli4 the abort_tag is the XRI, * so the abort routine puts the iotag of the iocb * being aborted in the context field of the abort * IOCB. */ abort_iocb = phba->sli.iocbq_lookup[abort_context]; lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI, "0327 Cannot abort els iocb %p " "with tag %x context %x, abort status %x, " "abort code %x\n", abort_iocb, abort_iotag, abort_context, irsp->ulpStatus, irsp->un.ulpWord[4]); /* * If the iocb is not found in Firmware queue the iocb * might have completed already. Do not free it again. */ if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) { if (irsp->un.ulpWord[4] != IOERR_NO_XRI) { spin_unlock_irq(&phba->hbalock); lpfc_sli_release_iocbq(phba, cmdiocb); return; } /* For SLI4 the ulpContext field for abort IOCB * holds the iotag of the IOCB being aborted so * the local abort_context needs to be reset to * match the aborted IOCBs ulpContext. */ if (abort_iocb && phba->sli_rev == LPFC_SLI_REV4) abort_context = abort_iocb->iocb.ulpContext; } /* * make sure we have the right iocbq before taking it * off the txcmplq and try to call completion routine. */ if (!abort_iocb || abort_iocb->iocb.ulpContext != abort_context || (abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0) spin_unlock_irq(&phba->hbalock); else if (phba->sli_rev < LPFC_SLI_REV4) { /* * leave the SLI4 aborted command on the txcmplq * list and the command complete WCQE's XB bit * will tell whether the SGL (XRI) can be released * immediately or to the aborted SGL list for the * following abort XRI from the HBA. */ list_del_init(&abort_iocb->list); pring->txcmplq_cnt--; spin_unlock_irq(&phba->hbalock); /* Firmware could still be in progress of DMAing * payload, so don't free data buffer till after * a hbeat. */ spin_lock_irq(&phba->hbalock); abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE; abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED; spin_unlock_irq(&phba->hbalock); abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; abort_iocb->iocb.un.ulpWord[4] = IOERR_ABORT_REQUESTED; (abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb); } } lpfc_sli_release_iocbq(phba, cmdiocb); return; } /** * lpfc_ignore_els_cmpl - Completion handler for aborted ELS command * @phba: Pointer to HBA context object. * @cmdiocb: Pointer to driver command iocb object. * @rspiocb: Pointer to driver response iocb object. * * The function is called from SLI ring event handler with no * lock held. This function is the completion handler for ELS commands * which are aborted. The function frees memory resources used for * the aborted ELS commands. **/ static void lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { IOCB_t *irsp = &rspiocb->iocb; /* ELS cmd tag completes */ lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "0139 Ignoring ELS cmd tag x%x completion Data: " "x%x x%x x%x\n", irsp->ulpIoTag, irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpTimeout); if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) lpfc_ct_free_iocb(phba, cmdiocb); else lpfc_els_free_iocb(phba, cmdiocb); return; } /** * lpfc_sli_issue_abort_iotag - Abort function for a command iocb * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. * @cmdiocb: Pointer to driver command iocb object. * * This function issues an abort iocb for the provided command * iocb. This function is called with hbalock held. * The function returns 0 when it fails due to memory allocation * failure or when the command iocb is an abort request. **/ int lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *cmdiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_iocbq *abtsiocbp; IOCB_t *icmd = NULL; IOCB_t *iabt = NULL; int retval = IOCB_ERROR; /* * There are certain command types we don't want to abort. And we * don't want to abort commands that are already in the process of * being aborted. */ icmd = &cmdiocb->iocb; if (icmd->ulpCommand == CMD_ABORT_XRI_CN || icmd->ulpCommand == CMD_CLOSE_XRI_CN || (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0) return 0; /* If we're unloading, don't abort iocb on the ELS ring, but change the * callback so that nothing happens when it finishes. */ if ((vport->load_flag & FC_UNLOADING) && (pring->ringno == LPFC_ELS_RING)) { if (cmdiocb->iocb_flag & LPFC_IO_FABRIC) cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl; else cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl; goto abort_iotag_exit; } /* issue ABTS for this IOCB based on iotag */ abtsiocbp = __lpfc_sli_get_iocbq(phba); if (abtsiocbp == NULL) return 0; /* This signals the response to set the correct status * before calling the completion handler */ cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED; iabt = &abtsiocbp->iocb; iabt->un.acxri.abortType = ABORT_TYPE_ABTS; iabt->un.acxri.abortContextTag = icmd->ulpContext; if (phba->sli_rev == LPFC_SLI_REV4) { iabt->un.acxri.abortIoTag = cmdiocb->sli4_xritag; iabt->un.acxri.abortContextTag = cmdiocb->iotag; } else iabt->un.acxri.abortIoTag = icmd->ulpIoTag; iabt->ulpLe = 1; iabt->ulpClass = icmd->ulpClass; /* ABTS WQE must go to the same WQ as the WQE to be aborted */ abtsiocbp->fcp_wqidx = cmdiocb->fcp_wqidx; if (cmdiocb->iocb_flag & LPFC_IO_FCP) abtsiocbp->iocb_flag |= LPFC_USE_FCPWQIDX; if (phba->link_state >= LPFC_LINK_UP) iabt->ulpCommand = CMD_ABORT_XRI_CN; else iabt->ulpCommand = CMD_CLOSE_XRI_CN; abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl; lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, "0339 Abort xri x%x, original iotag x%x, " "abort cmd iotag x%x\n", iabt->un.acxri.abortContextTag, iabt->un.acxri.abortIoTag, abtsiocbp->iotag); retval = __lpfc_sli_issue_iocb(phba, pring->ringno, abtsiocbp, 0); if (retval) __lpfc_sli_release_iocbq(phba, abtsiocbp); abort_iotag_exit: /* * Caller to this routine should check for IOCB_ERROR * and handle it properly. This routine no longer removes * iocb off txcmplq and call compl in case of IOCB_ERROR. */ return retval; } /** * lpfc_sli_validate_fcp_iocb - find commands associated with a vport or LUN * @iocbq: Pointer to driver iocb object. * @vport: Pointer to driver virtual port object. * @tgt_id: SCSI ID of the target. * @lun_id: LUN ID of the scsi device. * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST * * This function acts as an iocb filter for functions which abort or count * all FCP iocbs pending on a lun/SCSI target/SCSI host. It will return * 0 if the filtering criteria is met for the given iocb and will return * 1 if the filtering criteria is not met. * If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the * given iocb is for the SCSI device specified by vport, tgt_id and * lun_id parameter. * If ctx_cmd == LPFC_CTX_TGT, the function returns 0 only if the * given iocb is for the SCSI target specified by vport and tgt_id * parameters. * If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the * given iocb is for the SCSI host associated with the given vport. * This function is called with no locks held. **/ static int lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd) { struct lpfc_scsi_buf *lpfc_cmd; int rc = 1; if (!(iocbq->iocb_flag & LPFC_IO_FCP)) return rc; if (iocbq->vport != vport) return rc; lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); if (lpfc_cmd->pCmd == NULL) return rc; switch (ctx_cmd) { case LPFC_CTX_LUN: if ((lpfc_cmd->rdata->pnode) && (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) && (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id)) rc = 0; break; case LPFC_CTX_TGT: if ((lpfc_cmd->rdata->pnode) && (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id)) rc = 0; break; case LPFC_CTX_HOST: rc = 0; break; default: printk(KERN_ERR "%s: Unknown context cmd type, value %d\n", __func__, ctx_cmd); break; } return rc; } /** * lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending * @vport: Pointer to virtual port. * @tgt_id: SCSI ID of the target. * @lun_id: LUN ID of the scsi device. * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST. * * This function returns number of FCP commands pending for the vport. * When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP * commands pending on the vport associated with SCSI device specified * by tgt_id and lun_id parameters. * When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP * commands pending on the vport associated with SCSI target specified * by tgt_id parameter. * When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP * commands pending on the vport. * This function returns the number of iocbs which satisfy the filter. * This function is called without any lock held. **/ int lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd) { struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *iocbq; int sum, i; for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) { iocbq = phba->sli.iocbq_lookup[i]; if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id, ctx_cmd) == 0) sum++; } return sum; } /** * lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs * @phba: Pointer to HBA context object * @cmdiocb: Pointer to command iocb object. * @rspiocb: Pointer to response iocb object. * * This function is called when an aborted FCP iocb completes. This * function is called by the ring event handler with no lock held. * This function frees the iocb. **/ void lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { lpfc_sli_release_iocbq(phba, cmdiocb); return; } /** * lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN * @vport: Pointer to virtual port. * @pring: Pointer to driver SLI ring object. * @tgt_id: SCSI ID of the target. * @lun_id: LUN ID of the scsi device. * @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST. * * This function sends an abort command for every SCSI command * associated with the given virtual port pending on the ring * filtered by lpfc_sli_validate_fcp_iocb function. * When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the * FCP iocbs associated with lun specified by tgt_id and lun_id * parameters * When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the * FCP iocbs associated with SCSI target specified by tgt_id parameter. * When abort_cmd == LPFC_CTX_HOST, the function sends abort to all * FCP iocbs associated with virtual port. * This function returns number of iocbs it failed to abort. * This function is called with no locks held. **/ int lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring, uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd) { struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *iocbq; struct lpfc_iocbq *abtsiocb; IOCB_t *cmd = NULL; int errcnt = 0, ret_val = 0; int i; for (i = 1; i <= phba->sli.last_iotag; i++) { iocbq = phba->sli.iocbq_lookup[i]; if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id, abort_cmd) != 0) continue; /* issue ABTS for this IOCB based on iotag */ abtsiocb = lpfc_sli_get_iocbq(phba); if (abtsiocb == NULL) { errcnt++; continue; } cmd = &iocbq->iocb; abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS; abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext; if (phba->sli_rev == LPFC_SLI_REV4) abtsiocb->iocb.un.acxri.abortIoTag = iocbq->sli4_xritag; else abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag; abtsiocb->iocb.ulpLe = 1; abtsiocb->iocb.ulpClass = cmd->ulpClass; abtsiocb->vport = phba->pport; /* ABTS WQE must go to the same WQ as the WQE to be aborted */ abtsiocb->fcp_wqidx = iocbq->fcp_wqidx; if (iocbq->iocb_flag & LPFC_IO_FCP) abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; if (lpfc_is_link_up(phba)) abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN; else abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN; /* Setup callback routine and issue the command. */ abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; ret_val = lpfc_sli_issue_iocb(phba, pring->ringno, abtsiocb, 0); if (ret_val == IOCB_ERROR) { lpfc_sli_release_iocbq(phba, abtsiocb); errcnt++; continue; } } return errcnt; } /** * lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler * @phba: Pointer to HBA context object. * @cmdiocbq: Pointer to command iocb. * @rspiocbq: Pointer to response iocb. * * This function is the completion handler for iocbs issued using * lpfc_sli_issue_iocb_wait function. This function is called by the * ring event handler function without any lock held. This function * can be called from both worker thread context and interrupt * context. This function also can be called from other thread which * cleans up the SLI layer objects. * This function copy the contents of the response iocb to the * response iocb memory object provided by the caller of * lpfc_sli_issue_iocb_wait and then wakes up the thread which * sleeps for the iocb completion. **/ static void lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq, struct lpfc_iocbq *rspiocbq) { wait_queue_head_t *pdone_q; unsigned long iflags; struct lpfc_scsi_buf *lpfc_cmd; spin_lock_irqsave(&phba->hbalock, iflags); cmdiocbq->iocb_flag |= LPFC_IO_WAKE; if (cmdiocbq->context2 && rspiocbq) memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb, &rspiocbq->iocb, sizeof(IOCB_t)); /* Set the exchange busy flag for task management commands */ if ((cmdiocbq->iocb_flag & LPFC_IO_FCP) && !(cmdiocbq->iocb_flag & LPFC_IO_LIBDFC)) { lpfc_cmd = container_of(cmdiocbq, struct lpfc_scsi_buf, cur_iocbq); lpfc_cmd->exch_busy = rspiocbq->iocb_flag & LPFC_EXCHANGE_BUSY; } pdone_q = cmdiocbq->context_un.wait_queue; if (pdone_q) wake_up(pdone_q); spin_unlock_irqrestore(&phba->hbalock, iflags); return; } /** * lpfc_chk_iocb_flg - Test IOCB flag with lock held. * @phba: Pointer to HBA context object.. * @piocbq: Pointer to command iocb. * @flag: Flag to test. * * This routine grabs the hbalock and then test the iocb_flag to * see if the passed in flag is set. * Returns: * 1 if flag is set. * 0 if flag is not set. **/ static int lpfc_chk_iocb_flg(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq, uint32_t flag) { unsigned long iflags; int ret; spin_lock_irqsave(&phba->hbalock, iflags); ret = piocbq->iocb_flag & flag; spin_unlock_irqrestore(&phba->hbalock, iflags); return ret; } /** * lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands * @phba: Pointer to HBA context object.. * @pring: Pointer to sli ring. * @piocb: Pointer to command iocb. * @prspiocbq: Pointer to response iocb. * @timeout: Timeout in number of seconds. * * This function issues the iocb to firmware and waits for the * iocb to complete. If the iocb command is not * completed within timeout seconds, it returns IOCB_TIMEDOUT. * Caller should not free the iocb resources if this function * returns IOCB_TIMEDOUT. * The function waits for the iocb completion using an * non-interruptible wait. * This function will sleep while waiting for iocb completion. * So, this function should not be called from any context which * does not allow sleeping. Due to the same reason, this function * cannot be called with interrupt disabled. * This function assumes that the iocb completions occur while * this function sleep. So, this function cannot be called from * the thread which process iocb completion for this ring. * This function clears the iocb_flag of the iocb object before * issuing the iocb and the iocb completion handler sets this * flag and wakes this thread when the iocb completes. * The contents of the response iocb will be copied to prspiocbq * by the completion handler when the command completes. * This function returns IOCB_SUCCESS when success. * This function is called with no lock held. **/ int lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba, uint32_t ring_number, struct lpfc_iocbq *piocb, struct lpfc_iocbq *prspiocbq, uint32_t timeout) { DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); long timeleft, timeout_req = 0; int retval = IOCB_SUCCESS; uint32_t creg_val; /* * If the caller has provided a response iocbq buffer, then context2 * is NULL or its an error. */ if (prspiocbq) { if (piocb->context2) return IOCB_ERROR; piocb->context2 = prspiocbq; } piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait; piocb->context_un.wait_queue = &done_q; piocb->iocb_flag &= ~LPFC_IO_WAKE; if (phba->cfg_poll & DISABLE_FCP_RING_INT) { creg_val = readl(phba->HCregaddr); creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); writel(creg_val, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } retval = lpfc_sli_issue_iocb(phba, ring_number, piocb, 0); if (retval == IOCB_SUCCESS) { timeout_req = timeout * HZ; timeleft = wait_event_timeout(done_q, lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE), timeout_req); if (piocb->iocb_flag & LPFC_IO_WAKE) { lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0331 IOCB wake signaled\n"); } else if (timeleft == 0) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0338 IOCB wait timeout error - no " "wake response Data x%x\n", timeout); retval = IOCB_TIMEDOUT; } else { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0330 IOCB wake NOT set, " "Data x%x x%lx\n", timeout, (timeleft / jiffies)); retval = IOCB_TIMEDOUT; } } else { lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0332 IOCB wait issue failed, Data x%x\n", retval); retval = IOCB_ERROR; } if (phba->cfg_poll & DISABLE_FCP_RING_INT) { creg_val = readl(phba->HCregaddr); creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING); writel(creg_val, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } if (prspiocbq) piocb->context2 = NULL; piocb->context_un.wait_queue = NULL; piocb->iocb_cmpl = NULL; return retval; } /** * lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox * @phba: Pointer to HBA context object. * @pmboxq: Pointer to driver mailbox object. * @timeout: Timeout in number of seconds. * * This function issues the mailbox to firmware and waits for the * mailbox command to complete. If the mailbox command is not * completed within timeout seconds, it returns MBX_TIMEOUT. * The function waits for the mailbox completion using an * interruptible wait. If the thread is woken up due to a * signal, MBX_TIMEOUT error is returned to the caller. Caller * should not free the mailbox resources, if this function returns * MBX_TIMEOUT. * This function will sleep while waiting for mailbox completion. * So, this function should not be called from any context which * does not allow sleeping. Due to the same reason, this function * cannot be called with interrupt disabled. * This function assumes that the mailbox completion occurs while * this function sleep. So, this function cannot be called from * the worker thread which processes mailbox completion. * This function is called in the context of HBA management * applications. * This function returns MBX_SUCCESS when successful. * This function is called with no lock held. **/ int lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq, uint32_t timeout) { DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); int retval; unsigned long flag; /* The caller must leave context1 empty. */ if (pmboxq->context1) return MBX_NOT_FINISHED; pmboxq->mbox_flag &= ~LPFC_MBX_WAKE; /* setup wake call as IOCB callback */ pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait; /* setup context field to pass wait_queue pointer to wake function */ pmboxq->context1 = &done_q; /* now issue the command */ retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); if (retval == MBX_BUSY || retval == MBX_SUCCESS) { wait_event_interruptible_timeout(done_q, pmboxq->mbox_flag & LPFC_MBX_WAKE, timeout * HZ); spin_lock_irqsave(&phba->hbalock, flag); pmboxq->context1 = NULL; /* * if LPFC_MBX_WAKE flag is set the mailbox is completed * else do not free the resources. */ if (pmboxq->mbox_flag & LPFC_MBX_WAKE) retval = MBX_SUCCESS; else { retval = MBX_TIMEOUT; pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl; } spin_unlock_irqrestore(&phba->hbalock, flag); } return retval; } /** * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system * @phba: Pointer to HBA context. * * This function is called to shutdown the driver's mailbox sub-system. * It first marks the mailbox sub-system is in a block state to prevent * the asynchronous mailbox command from issued off the pending mailbox * command queue. If the mailbox command sub-system shutdown is due to * HBA error conditions such as EEH or ERATT, this routine shall invoke * the mailbox sub-system flush routine to forcefully bring down the * mailbox sub-system. Otherwise, if it is due to normal condition (such * as with offline or HBA function reset), this routine will wait for the * outstanding mailbox command to complete before invoking the mailbox * sub-system flush routine to gracefully bring down mailbox sub-system. **/ void lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba) { struct lpfc_sli *psli = &phba->sli; uint8_t actcmd = MBX_HEARTBEAT; unsigned long timeout; spin_lock_irq(&phba->hbalock); psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK; spin_unlock_irq(&phba->hbalock); if (psli->sli_flag & LPFC_SLI_ACTIVE) { spin_lock_irq(&phba->hbalock); if (phba->sli.mbox_active) actcmd = phba->sli.mbox_active->u.mb.mbxCommand; spin_unlock_irq(&phba->hbalock); /* Determine how long we might wait for the active mailbox * command to be gracefully completed by firmware. */ timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) + jiffies; while (phba->sli.mbox_active) { /* Check active mailbox complete status every 2ms */ msleep(2); if (time_after(jiffies, timeout)) /* Timeout, let the mailbox flush routine to * forcefully release active mailbox command */ break; } } lpfc_sli_mbox_sys_flush(phba); } /** * lpfc_sli_eratt_read - read sli-3 error attention events * @phba: Pointer to HBA context. * * This function is called to read the SLI3 device error attention registers * for possible error attention events. The caller must hold the hostlock * with spin_lock_irq(). * * This fucntion returns 1 when there is Error Attention in the Host Attention * Register and returns 0 otherwise. **/ static int lpfc_sli_eratt_read(struct lpfc_hba *phba) { uint32_t ha_copy; /* Read chip Host Attention (HA) register */ ha_copy = readl(phba->HAregaddr); if (ha_copy & HA_ERATT) { /* Read host status register to retrieve error event */ lpfc_sli_read_hs(phba); /* Check if there is a deferred error condition is active */ if ((HS_FFER1 & phba->work_hs) && ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 | HS_FFER6 | HS_FFER7) & phba->work_hs)) { phba->hba_flag |= DEFER_ERATT; /* Clear all interrupt enable conditions */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); } /* Set the driver HA work bitmap */ phba->work_ha |= HA_ERATT; /* Indicate polling handles this ERATT */ phba->hba_flag |= HBA_ERATT_HANDLED; return 1; } return 0; } /** * lpfc_sli4_eratt_read - read sli-4 error attention events * @phba: Pointer to HBA context. * * This function is called to read the SLI4 device error attention registers * for possible error attention events. The caller must hold the hostlock * with spin_lock_irq(). * * This fucntion returns 1 when there is Error Attention in the Host Attention * Register and returns 0 otherwise. **/ static int lpfc_sli4_eratt_read(struct lpfc_hba *phba) { uint32_t uerr_sta_hi, uerr_sta_lo; /* For now, use the SLI4 device internal unrecoverable error * registers for error attention. This can be changed later. */ uerr_sta_lo = readl(phba->sli4_hba.UERRLOregaddr); uerr_sta_hi = readl(phba->sli4_hba.UERRHIregaddr); if ((~phba->sli4_hba.ue_mask_lo & uerr_sta_lo) || (~phba->sli4_hba.ue_mask_hi & uerr_sta_hi)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "1423 HBA Unrecoverable error: " "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, " "ue_mask_lo_reg=0x%x, ue_mask_hi_reg=0x%x\n", uerr_sta_lo, uerr_sta_hi, phba->sli4_hba.ue_mask_lo, phba->sli4_hba.ue_mask_hi); phba->work_status[0] = uerr_sta_lo; phba->work_status[1] = uerr_sta_hi; /* Set the driver HA work bitmap */ phba->work_ha |= HA_ERATT; /* Indicate polling handles this ERATT */ phba->hba_flag |= HBA_ERATT_HANDLED; return 1; } return 0; } /** * lpfc_sli_check_eratt - check error attention events * @phba: Pointer to HBA context. * * This function is called from timer soft interrupt context to check HBA's * error attention register bit for error attention events. * * This fucntion returns 1 when there is Error Attention in the Host Attention * Register and returns 0 otherwise. **/ int lpfc_sli_check_eratt(struct lpfc_hba *phba) { uint32_t ha_copy; /* If somebody is waiting to handle an eratt, don't process it * here. The brdkill function will do this. */ if (phba->link_flag & LS_IGNORE_ERATT) return 0; /* Check if interrupt handler handles this ERATT */ spin_lock_irq(&phba->hbalock); if (phba->hba_flag & HBA_ERATT_HANDLED) { /* Interrupt handler has handled ERATT */ spin_unlock_irq(&phba->hbalock); return 0; } /* * If there is deferred error attention, do not check for error * attention */ if (unlikely(phba->hba_flag & DEFER_ERATT)) { spin_unlock_irq(&phba->hbalock); return 0; } /* If PCI channel is offline, don't process it */ if (unlikely(pci_channel_offline(phba->pcidev))) { spin_unlock_irq(&phba->hbalock); return 0; } switch (phba->sli_rev) { case LPFC_SLI_REV2: case LPFC_SLI_REV3: /* Read chip Host Attention (HA) register */ ha_copy = lpfc_sli_eratt_read(phba); break; case LPFC_SLI_REV4: /* Read devcie Uncoverable Error (UERR) registers */ ha_copy = lpfc_sli4_eratt_read(phba); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0299 Invalid SLI revision (%d)\n", phba->sli_rev); ha_copy = 0; break; } spin_unlock_irq(&phba->hbalock); return ha_copy; } /** * lpfc_intr_state_check - Check device state for interrupt handling * @phba: Pointer to HBA context. * * This inline routine checks whether a device or its PCI slot is in a state * that the interrupt should be handled. * * This function returns 0 if the device or the PCI slot is in a state that * interrupt should be handled, otherwise -EIO. */ static inline int lpfc_intr_state_check(struct lpfc_hba *phba) { /* If the pci channel is offline, ignore all the interrupts */ if (unlikely(pci_channel_offline(phba->pcidev))) return -EIO; /* Update device level interrupt statistics */ phba->sli.slistat.sli_intr++; /* Ignore all interrupts during initialization. */ if (unlikely(phba->link_state < LPFC_LINK_DOWN)) return -EIO; return 0; } /** * lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device * @irq: Interrupt number. * @dev_id: The device context pointer. * * This function is directly called from the PCI layer as an interrupt * service routine when device with SLI-3 interface spec is enabled with * MSI-X multi-message interrupt mode and there are slow-path events in * the HBA. However, when the device is enabled with either MSI or Pin-IRQ * interrupt mode, this function is called as part of the device-level * interrupt handler. When the PCI slot is in error recovery or the HBA * is undergoing initialization, the interrupt handler will not process * the interrupt. The link attention and ELS ring attention events are * handled by the worker thread. The interrupt handler signals the worker * thread and returns for these events. This function is called without * any lock held. It gets the hbalock to access and update SLI data * structures. * * This function returns IRQ_HANDLED when interrupt is handled else it * returns IRQ_NONE. **/ irqreturn_t lpfc_sli_sp_intr_handler(int irq, void *dev_id) { struct lpfc_hba *phba; uint32_t ha_copy, hc_copy; uint32_t work_ha_copy; unsigned long status; unsigned long iflag; uint32_t control; MAILBOX_t *mbox, *pmbox; struct lpfc_vport *vport; struct lpfc_nodelist *ndlp; struct lpfc_dmabuf *mp; LPFC_MBOXQ_t *pmb; int rc; /* * Get the driver's phba structure from the dev_id and * assume the HBA is not interrupting. */ phba = (struct lpfc_hba *)dev_id; if (unlikely(!phba)) return IRQ_NONE; /* * Stuff needs to be attented to when this function is invoked as an * individual interrupt handler in MSI-X multi-message interrupt mode */ if (phba->intr_type == MSIX) { /* Check device state for handling interrupt */ if (lpfc_intr_state_check(phba)) return IRQ_NONE; /* Need to read HA REG for slow-path events */ spin_lock_irqsave(&phba->hbalock, iflag); ha_copy = readl(phba->HAregaddr); /* If somebody is waiting to handle an eratt don't process it * here. The brdkill function will do this. */ if (phba->link_flag & LS_IGNORE_ERATT) ha_copy &= ~HA_ERATT; /* Check the need for handling ERATT in interrupt handler */ if (ha_copy & HA_ERATT) { if (phba->hba_flag & HBA_ERATT_HANDLED) /* ERATT polling has handled ERATT */ ha_copy &= ~HA_ERATT; else /* Indicate interrupt handler handles ERATT */ phba->hba_flag |= HBA_ERATT_HANDLED; } /* * If there is deferred error attention, do not check for any * interrupt. */ if (unlikely(phba->hba_flag & DEFER_ERATT)) { spin_unlock_irqrestore(&phba->hbalock, iflag); return IRQ_NONE; } /* Clear up only attention source related to slow-path */ hc_copy = readl(phba->HCregaddr); writel(hc_copy & ~(HC_MBINT_ENA | HC_R2INT_ENA | HC_LAINT_ENA | HC_ERINT_ENA), phba->HCregaddr); writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)), phba->HAregaddr); writel(hc_copy, phba->HCregaddr); readl(phba->HAregaddr); /* flush */ spin_unlock_irqrestore(&phba->hbalock, iflag); } else ha_copy = phba->ha_copy; work_ha_copy = ha_copy & phba->work_ha_mask; if (work_ha_copy) { if (work_ha_copy & HA_LATT) { if (phba->sli.sli_flag & LPFC_PROCESS_LA) { /* * Turn off Link Attention interrupts * until CLEAR_LA done */ spin_lock_irqsave(&phba->hbalock, iflag); phba->sli.sli_flag &= ~LPFC_PROCESS_LA; control = readl(phba->HCregaddr); control &= ~HC_LAINT_ENA; writel(control, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ spin_unlock_irqrestore(&phba->hbalock, iflag); } else work_ha_copy &= ~HA_LATT; } if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) { /* * Turn off Slow Rings interrupts, LPFC_ELS_RING is * the only slow ring. */ status = (work_ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); status >>= (4*LPFC_ELS_RING); if (status & HA_RXMASK) { spin_lock_irqsave(&phba->hbalock, iflag); control = readl(phba->HCregaddr); lpfc_debugfs_slow_ring_trc(phba, "ISR slow ring: ctl:x%x stat:x%x isrcnt:x%x", control, status, (uint32_t)phba->sli.slistat.sli_intr); if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) { lpfc_debugfs_slow_ring_trc(phba, "ISR Disable ring:" "pwork:x%x hawork:x%x wait:x%x", phba->work_ha, work_ha_copy, (uint32_t)((unsigned long) &phba->work_waitq)); control &= ~(HC_R0INT_ENA << LPFC_ELS_RING); writel(control, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } else { lpfc_debugfs_slow_ring_trc(phba, "ISR slow ring: pwork:" "x%x hawork:x%x wait:x%x", phba->work_ha, work_ha_copy, (uint32_t)((unsigned long) &phba->work_waitq)); } spin_unlock_irqrestore(&phba->hbalock, iflag); } } spin_lock_irqsave(&phba->hbalock, iflag); if (work_ha_copy & HA_ERATT) { lpfc_sli_read_hs(phba); /* * Check if there is a deferred error condition * is active */ if ((HS_FFER1 & phba->work_hs) && ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 | HS_FFER6 | HS_FFER7) & phba->work_hs)) { phba->hba_flag |= DEFER_ERATT; /* Clear all interrupt enable conditions */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); } } if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) { pmb = phba->sli.mbox_active; pmbox = &pmb->u.mb; mbox = phba->mbox; vport = pmb->vport; /* First check out the status word */ lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t)); if (pmbox->mbxOwner != OWN_HOST) { spin_unlock_irqrestore(&phba->hbalock, iflag); /* * Stray Mailbox Interrupt, mbxCommand * mbxStatus */ lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "(%d):0304 Stray Mailbox " "Interrupt mbxCommand x%x " "mbxStatus x%x\n", (vport ? vport->vpi : 0), pmbox->mbxCommand, pmbox->mbxStatus); /* clear mailbox attention bit */ work_ha_copy &= ~HA_MBATT; } else { phba->sli.mbox_active = NULL; spin_unlock_irqrestore(&phba->hbalock, iflag); phba->last_completion_time = jiffies; del_timer(&phba->sli.mbox_tmo); if (pmb->mbox_cmpl) { lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE); } if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) { pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT, "MBOX dflt rpi: : " "status:x%x rpi:x%x", (uint32_t)pmbox->mbxStatus, pmbox->un.varWords[0], 0); if (!pmbox->mbxStatus) { mp = (struct lpfc_dmabuf *) (pmb->context1); ndlp = (struct lpfc_nodelist *) pmb->context2; /* Reg_LOGIN of dflt RPI was * successful. new lets get * rid of the RPI using the * same mbox buffer. */ lpfc_unreg_login(phba, vport->vpi, pmbox->un.varWords[0], pmb); pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; pmb->context1 = mp; pmb->context2 = ndlp; pmb->vport = vport; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc != MBX_BUSY) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0350 rc should have" "been MBX_BUSY\n"); if (rc != MBX_NOT_FINISHED) goto send_current_mbox; } } spin_lock_irqsave( &phba->pport->work_port_lock, iflag); phba->pport->work_port_events &= ~WORKER_MBOX_TMO; spin_unlock_irqrestore( &phba->pport->work_port_lock, iflag); lpfc_mbox_cmpl_put(phba, pmb); } } else spin_unlock_irqrestore(&phba->hbalock, iflag); if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active == NULL)) { send_current_mbox: /* Process next mailbox command if there is one */ do { rc = lpfc_sli_issue_mbox(phba, NULL, MBX_NOWAIT); } while (rc == MBX_NOT_FINISHED); if (rc != MBX_SUCCESS) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0349 rc should be " "MBX_SUCCESS\n"); } spin_lock_irqsave(&phba->hbalock, iflag); phba->work_ha |= work_ha_copy; spin_unlock_irqrestore(&phba->hbalock, iflag); lpfc_worker_wake_up(phba); } return IRQ_HANDLED; } /* lpfc_sli_sp_intr_handler */ /** * lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device. * @irq: Interrupt number. * @dev_id: The device context pointer. * * This function is directly called from the PCI layer as an interrupt * service routine when device with SLI-3 interface spec is enabled with * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB * ring event in the HBA. However, when the device is enabled with either * MSI or Pin-IRQ interrupt mode, this function is called as part of the * device-level interrupt handler. When the PCI slot is in error recovery * or the HBA is undergoing initialization, the interrupt handler will not * process the interrupt. The SCSI FCP fast-path ring event are handled in * the intrrupt context. This function is called without any lock held. * It gets the hbalock to access and update SLI data structures. * * This function returns IRQ_HANDLED when interrupt is handled else it * returns IRQ_NONE. **/ irqreturn_t lpfc_sli_fp_intr_handler(int irq, void *dev_id) { struct lpfc_hba *phba; uint32_t ha_copy; unsigned long status; unsigned long iflag; /* Get the driver's phba structure from the dev_id and * assume the HBA is not interrupting. */ phba = (struct lpfc_hba *) dev_id; if (unlikely(!phba)) return IRQ_NONE; /* * Stuff needs to be attented to when this function is invoked as an * individual interrupt handler in MSI-X multi-message interrupt mode */ if (phba->intr_type == MSIX) { /* Check device state for handling interrupt */ if (lpfc_intr_state_check(phba)) return IRQ_NONE; /* Need to read HA REG for FCP ring and other ring events */ ha_copy = readl(phba->HAregaddr); /* Clear up only attention source related to fast-path */ spin_lock_irqsave(&phba->hbalock, iflag); /* * If there is deferred error attention, do not check for * any interrupt. */ if (unlikely(phba->hba_flag & DEFER_ERATT)) { spin_unlock_irqrestore(&phba->hbalock, iflag); return IRQ_NONE; } writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)), phba->HAregaddr); readl(phba->HAregaddr); /* flush */ spin_unlock_irqrestore(&phba->hbalock, iflag); } else ha_copy = phba->ha_copy; /* * Process all events on FCP ring. Take the optimized path for FCP IO. */ ha_copy &= ~(phba->work_ha_mask); status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); status >>= (4*LPFC_FCP_RING); if (status & HA_RXMASK) lpfc_sli_handle_fast_ring_event(phba, &phba->sli.ring[LPFC_FCP_RING], status); if (phba->cfg_multi_ring_support == 2) { /* * Process all events on extra ring. Take the optimized path * for extra ring IO. */ status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING))); status >>= (4*LPFC_EXTRA_RING); if (status & HA_RXMASK) { lpfc_sli_handle_fast_ring_event(phba, &phba->sli.ring[LPFC_EXTRA_RING], status); } } return IRQ_HANDLED; } /* lpfc_sli_fp_intr_handler */ /** * lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device * @irq: Interrupt number. * @dev_id: The device context pointer. * * This function is the HBA device-level interrupt handler to device with * SLI-3 interface spec, called from the PCI layer when either MSI or * Pin-IRQ interrupt mode is enabled and there is an event in the HBA which * requires driver attention. This function invokes the slow-path interrupt * attention handling function and fast-path interrupt attention handling * function in turn to process the relevant HBA attention events. This * function is called without any lock held. It gets the hbalock to access * and update SLI data structures. * * This function returns IRQ_HANDLED when interrupt is handled, else it * returns IRQ_NONE. **/ irqreturn_t lpfc_sli_intr_handler(int irq, void *dev_id) { struct lpfc_hba *phba; irqreturn_t sp_irq_rc, fp_irq_rc; unsigned long status1, status2; uint32_t hc_copy; /* * Get the driver's phba structure from the dev_id and * assume the HBA is not interrupting. */ phba = (struct lpfc_hba *) dev_id; if (unlikely(!phba)) return IRQ_NONE; /* Check device state for handling interrupt */ if (lpfc_intr_state_check(phba)) return IRQ_NONE; spin_lock(&phba->hbalock); phba->ha_copy = readl(phba->HAregaddr); if (unlikely(!phba->ha_copy)) { spin_unlock(&phba->hbalock); return IRQ_NONE; } else if (phba->ha_copy & HA_ERATT) { if (phba->hba_flag & HBA_ERATT_HANDLED) /* ERATT polling has handled ERATT */ phba->ha_copy &= ~HA_ERATT; else /* Indicate interrupt handler handles ERATT */ phba->hba_flag |= HBA_ERATT_HANDLED; } /* * If there is deferred error attention, do not check for any interrupt. */ if (unlikely(phba->hba_flag & DEFER_ERATT)) { spin_unlock_irq(&phba->hbalock); return IRQ_NONE; } /* Clear attention sources except link and error attentions */ hc_copy = readl(phba->HCregaddr); writel(hc_copy & ~(HC_MBINT_ENA | HC_R0INT_ENA | HC_R1INT_ENA | HC_R2INT_ENA | HC_LAINT_ENA | HC_ERINT_ENA), phba->HCregaddr); writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr); writel(hc_copy, phba->HCregaddr); readl(phba->HAregaddr); /* flush */ spin_unlock(&phba->hbalock); /* * Invokes slow-path host attention interrupt handling as appropriate. */ /* status of events with mailbox and link attention */ status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT); /* status of events with ELS ring */ status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); status2 >>= (4*LPFC_ELS_RING); if (status1 || (status2 & HA_RXMASK)) sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id); else sp_irq_rc = IRQ_NONE; /* * Invoke fast-path host attention interrupt handling as appropriate. */ /* status of events with FCP ring */ status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); status1 >>= (4*LPFC_FCP_RING); /* status of events with extra ring */ if (phba->cfg_multi_ring_support == 2) { status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING))); status2 >>= (4*LPFC_EXTRA_RING); } else status2 = 0; if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK)) fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id); else fp_irq_rc = IRQ_NONE; /* Return device-level interrupt handling status */ return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc; } /* lpfc_sli_intr_handler */ /** * lpfc_sli4_fcp_xri_abort_event_proc - Process fcp xri abort event * @phba: pointer to lpfc hba data structure. * * This routine is invoked by the worker thread to process all the pending * SLI4 FCP abort XRI events. **/ void lpfc_sli4_fcp_xri_abort_event_proc(struct lpfc_hba *phba) { struct lpfc_cq_event *cq_event; /* First, declare the fcp xri abort event has been handled */ spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~FCP_XRI_ABORT_EVENT; spin_unlock_irq(&phba->hbalock); /* Now, handle all the fcp xri abort events */ while (!list_empty(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue)) { /* Get the first event from the head of the event queue */ spin_lock_irq(&phba->hbalock); list_remove_head(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue, cq_event, struct lpfc_cq_event, list); spin_unlock_irq(&phba->hbalock); /* Notify aborted XRI for FCP work queue */ lpfc_sli4_fcp_xri_aborted(phba, &cq_event->cqe.wcqe_axri); /* Free the event processed back to the free pool */ lpfc_sli4_cq_event_release(phba, cq_event); } } /** * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event * @phba: pointer to lpfc hba data structure. * * This routine is invoked by the worker thread to process all the pending * SLI4 els abort xri events. **/ void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba) { struct lpfc_cq_event *cq_event; /* First, declare the els xri abort event has been handled */ spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~ELS_XRI_ABORT_EVENT; spin_unlock_irq(&phba->hbalock); /* Now, handle all the els xri abort events */ while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) { /* Get the first event from the head of the event queue */ spin_lock_irq(&phba->hbalock); list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue, cq_event, struct lpfc_cq_event, list); spin_unlock_irq(&phba->hbalock); /* Notify aborted XRI for ELS work queue */ lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri); /* Free the event processed back to the free pool */ lpfc_sli4_cq_event_release(phba, cq_event); } } /** * lpfc_sli4_iocb_param_transfer - Transfer pIocbOut and cmpl status to pIocbIn * @phba: pointer to lpfc hba data structure * @pIocbIn: pointer to the rspiocbq * @pIocbOut: pointer to the cmdiocbq * @wcqe: pointer to the complete wcqe * * This routine transfers the fields of a command iocbq to a response iocbq * by copying all the IOCB fields from command iocbq and transferring the * completion status information from the complete wcqe. **/ static void lpfc_sli4_iocb_param_transfer(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, struct lpfc_iocbq *pIocbOut, struct lpfc_wcqe_complete *wcqe) { unsigned long iflags; size_t offset = offsetof(struct lpfc_iocbq, iocb); memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset, sizeof(struct lpfc_iocbq) - offset); /* Map WCQE parameters into irspiocb parameters */ pIocbIn->iocb.ulpStatus = bf_get(lpfc_wcqe_c_status, wcqe); if (pIocbOut->iocb_flag & LPFC_IO_FCP) if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR) pIocbIn->iocb.un.fcpi.fcpi_parm = pIocbOut->iocb.un.fcpi.fcpi_parm - wcqe->total_data_placed; else pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter; else { pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter; pIocbIn->iocb.un.genreq64.bdl.bdeSize = wcqe->total_data_placed; } /* Pick up HBA exchange busy condition */ if (bf_get(lpfc_wcqe_c_xb, wcqe)) { spin_lock_irqsave(&phba->hbalock, iflags); pIocbIn->iocb_flag |= LPFC_EXCHANGE_BUSY; spin_unlock_irqrestore(&phba->hbalock, iflags); } } /** * lpfc_sli4_els_wcqe_to_rspiocbq - Get response iocbq from els wcqe * @phba: Pointer to HBA context object. * @wcqe: Pointer to work-queue completion queue entry. * * This routine handles an ELS work-queue completion event and construct * a pseudo response ELS IODBQ from the SLI4 ELS WCQE for the common * discovery engine to handle. * * Return: Pointer to the receive IOCBQ, NULL otherwise. **/ static struct lpfc_iocbq * lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *phba, struct lpfc_iocbq *irspiocbq) { struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; struct lpfc_iocbq *cmdiocbq; struct lpfc_wcqe_complete *wcqe; unsigned long iflags; wcqe = &irspiocbq->cq_event.cqe.wcqe_cmpl; spin_lock_irqsave(&phba->hbalock, iflags); pring->stats.iocb_event++; /* Look up the ELS command IOCB and create pseudo response IOCB */ cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring, bf_get(lpfc_wcqe_c_request_tag, wcqe)); spin_unlock_irqrestore(&phba->hbalock, iflags); if (unlikely(!cmdiocbq)) { lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0386 ELS complete with no corresponding " "cmdiocb: iotag (%d)\n", bf_get(lpfc_wcqe_c_request_tag, wcqe)); lpfc_sli_release_iocbq(phba, irspiocbq); return NULL; } /* Fake the irspiocbq and copy necessary response information */ lpfc_sli4_iocb_param_transfer(phba, irspiocbq, cmdiocbq, wcqe); return irspiocbq; } /** * lpfc_sli4_sp_handle_async_event - Handle an asynchroous event * @phba: Pointer to HBA context object. * @cqe: Pointer to mailbox completion queue entry. * * This routine process a mailbox completion queue entry with asynchrous * event. * * Return: true if work posted to worker thread, otherwise false. **/ static bool lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe) { struct lpfc_cq_event *cq_event; unsigned long iflags; lpfc_printf_log(phba, KERN_INFO, LOG_SLI, "0392 Async Event: word0:x%x, word1:x%x, " "word2:x%x, word3:x%x\n", mcqe->word0, mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer); /* Allocate a new internal CQ_EVENT entry */ cq_event = lpfc_sli4_cq_event_alloc(phba); if (!cq_event) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0394 Failed to allocate CQ_EVENT entry\n"); return false; } /* Move the CQE into an asynchronous event entry */ memcpy(&cq_event->cqe, mcqe, sizeof(struct lpfc_mcqe)); spin_lock_irqsave(&phba->hbalock, iflags); list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue); /* Set the async event flag */ phba->hba_flag |= ASYNC_EVENT; spin_unlock_irqrestore(&phba->hbalock, iflags); return true; } /** * lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event * @phba: Pointer to HBA context object. * @cqe: Pointer to mailbox completion queue entry. * * This routine process a mailbox completion queue entry with mailbox * completion event. * * Return: true if work posted to worker thread, otherwise false. **/ static bool lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe) { uint32_t mcqe_status; MAILBOX_t *mbox, *pmbox; struct lpfc_mqe *mqe; struct lpfc_vport *vport; struct lpfc_nodelist *ndlp; struct lpfc_dmabuf *mp; unsigned long iflags; LPFC_MBOXQ_t *pmb; bool workposted = false; int rc; /* If not a mailbox complete MCQE, out by checking mailbox consume */ if (!bf_get(lpfc_trailer_completed, mcqe)) goto out_no_mqe_complete; /* Get the reference to the active mbox command */ spin_lock_irqsave(&phba->hbalock, iflags); pmb = phba->sli.mbox_active; if (unlikely(!pmb)) { lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, "1832 No pending MBOX command to handle\n"); spin_unlock_irqrestore(&phba->hbalock, iflags); goto out_no_mqe_complete; } spin_unlock_irqrestore(&phba->hbalock, iflags); mqe = &pmb->u.mqe; pmbox = (MAILBOX_t *)&pmb->u.mqe; mbox = phba->mbox; vport = pmb->vport; /* Reset heartbeat timer */ phba->last_completion_time = jiffies; del_timer(&phba->sli.mbox_tmo); /* Move mbox data to caller's mailbox region, do endian swapping */ if (pmb->mbox_cmpl && mbox) lpfc_sli_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe)); /* Set the mailbox status with SLI4 range 0x4000 */ mcqe_status = bf_get(lpfc_mcqe_status, mcqe); if (mcqe_status != MB_CQE_STATUS_SUCCESS) bf_set(lpfc_mqe_status, mqe, (LPFC_MBX_ERROR_RANGE | mcqe_status)); if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) { pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT, "MBOX dflt rpi: status:x%x rpi:x%x", mcqe_status, pmbox->un.varWords[0], 0); if (mcqe_status == MB_CQE_STATUS_SUCCESS) { mp = (struct lpfc_dmabuf *)(pmb->context1); ndlp = (struct lpfc_nodelist *)pmb->context2; /* Reg_LOGIN of dflt RPI was successful. Now lets get * RID of the PPI using the same mbox buffer. */ lpfc_unreg_login(phba, vport->vpi, pmbox->un.varWords[0], pmb); pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; pmb->context1 = mp; pmb->context2 = ndlp; pmb->vport = vport; rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); if (rc != MBX_BUSY) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, "0385 rc should " "have been MBX_BUSY\n"); if (rc != MBX_NOT_FINISHED) goto send_current_mbox; } } spin_lock_irqsave(&phba->pport->work_port_lock, iflags); phba->pport->work_port_events &= ~WORKER_MBOX_TMO; spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); /* There is mailbox completion work to do */ spin_lock_irqsave(&phba->hbalock, iflags); __lpfc_mbox_cmpl_put(phba, pmb); phba->work_ha |= HA_MBATT; spin_unlock_irqrestore(&phba->hbalock, iflags); workposted = true; send_current_mbox: spin_lock_irqsave(&phba->hbalock, iflags); /* Release the mailbox command posting token */ phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; /* Setting active mailbox pointer need to be in sync to flag clear */ phba->sli.mbox_active = NULL; spin_unlock_irqrestore(&phba->hbalock, iflags); /* Wake up worker thread to post the next pending mailbox command */ lpfc_worker_wake_up(phba); out_no_mqe_complete: if (bf_get(lpfc_trailer_consumed, mcqe)) lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq); return workposted; } /** * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry * @phba: Pointer to HBA context object. * @cqe: Pointer to mailbox completion queue entry. * * This routine process a mailbox completion queue entry, it invokes the * proper mailbox complete handling or asynchrous event handling routine * according to the MCQE's async bit. * * Return: true if work posted to worker thread, otherwise false. **/ static bool lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe) { struct lpfc_mcqe mcqe; bool workposted; /* Copy the mailbox MCQE and convert endian order as needed */ lpfc_sli_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe)); /* Invoke the proper event handling routine */ if (!bf_get(lpfc_trailer_async, &mcqe)) workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe); else workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe); return workposted; } /** * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event * @phba: Pointer to HBA context object. * @wcqe: Pointer to work-queue completion queue entry. * * This routine handles an ELS work-queue completion event. * * Return: true if work posted to worker thread, otherwise false. **/ static bool lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba, struct lpfc_wcqe_complete *wcqe) { struct lpfc_iocbq *irspiocbq; unsigned long iflags; /* Get an irspiocbq for later ELS response processing use */ irspiocbq = lpfc_sli_get_iocbq(phba); if (!irspiocbq) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0387 Failed to allocate an iocbq\n"); return false; } /* Save off the slow-path queue event for work thread to process */ memcpy(&irspiocbq->cq_event.cqe.wcqe_cmpl, wcqe, sizeof(*wcqe)); spin_lock_irqsave(&phba->hbalock, iflags); list_add_tail(&irspiocbq->cq_event.list, &phba->sli4_hba.sp_queue_event); phba->hba_flag |= HBA_SP_QUEUE_EVT; spin_unlock_irqrestore(&phba->hbalock, iflags); return true; } /** * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event * @phba: Pointer to HBA context object. * @wcqe: Pointer to work-queue completion queue entry. * * This routine handles slow-path WQ entry comsumed event by invoking the * proper WQ release routine to the slow-path WQ. **/ static void lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_wcqe_release *wcqe) { /* Check for the slow-path ELS work queue */ if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id) lpfc_sli4_wq_release(phba->sli4_hba.els_wq, bf_get(lpfc_wcqe_r_wqe_index, wcqe)); else lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "2579 Slow-path wqe consume event carries " "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n", bf_get(lpfc_wcqe_r_wqe_index, wcqe), phba->sli4_hba.els_wq->queue_id); } /** * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event * @phba: Pointer to HBA context object. * @cq: Pointer to a WQ completion queue. * @wcqe: Pointer to work-queue completion queue entry. * * This routine handles an XRI abort event. * * Return: true if work posted to worker thread, otherwise false. **/ static bool lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, struct sli4_wcqe_xri_aborted *wcqe) { bool workposted = false; struct lpfc_cq_event *cq_event; unsigned long iflags; /* Allocate a new internal CQ_EVENT entry */ cq_event = lpfc_sli4_cq_event_alloc(phba); if (!cq_event) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0602 Failed to allocate CQ_EVENT entry\n"); return false; } /* Move the CQE into the proper xri abort event list */ memcpy(&cq_event->cqe, wcqe, sizeof(struct sli4_wcqe_xri_aborted)); switch (cq->subtype) { case LPFC_FCP: spin_lock_irqsave(&phba->hbalock, iflags); list_add_tail(&cq_event->list, &phba->sli4_hba.sp_fcp_xri_aborted_work_queue); /* Set the fcp xri abort event flag */ phba->hba_flag |= FCP_XRI_ABORT_EVENT; spin_unlock_irqrestore(&phba->hbalock, iflags); workposted = true; break; case LPFC_ELS: spin_lock_irqsave(&phba->hbalock, iflags); list_add_tail(&cq_event->list, &phba->sli4_hba.sp_els_xri_aborted_work_queue); /* Set the els xri abort event flag */ phba->hba_flag |= ELS_XRI_ABORT_EVENT; spin_unlock_irqrestore(&phba->hbalock, iflags); workposted = true; break; default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0603 Invalid work queue CQE subtype (x%x)\n", cq->subtype); workposted = false; break; } return workposted; } /** * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry * @phba: Pointer to HBA context object. * @rcqe: Pointer to receive-queue completion queue entry. * * This routine process a receive-queue completion queue entry. * * Return: true if work posted to worker thread, otherwise false. **/ static bool lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_rcqe *rcqe) { bool workposted = false; struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq; struct lpfc_queue *drq = phba->sli4_hba.dat_rq; struct hbq_dmabuf *dma_buf; uint32_t status; unsigned long iflags; if (bf_get(lpfc_rcqe_rq_id, rcqe) != hrq->queue_id) goto out; status = bf_get(lpfc_rcqe_status, rcqe); switch (status) { case FC_STATUS_RQ_BUF_LEN_EXCEEDED: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2537 Receive Frame Truncated!!\n"); case FC_STATUS_RQ_SUCCESS: lpfc_sli4_rq_release(hrq, drq); spin_lock_irqsave(&phba->hbalock, iflags); dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list); if (!dma_buf) { spin_unlock_irqrestore(&phba->hbalock, iflags); goto out; } memcpy(&dma_buf->cq_event.cqe.rcqe_cmpl, rcqe, sizeof(*rcqe)); /* save off the frame for the word thread to process */ list_add_tail(&dma_buf->cq_event.list, &phba->sli4_hba.sp_queue_event); /* Frame received */ phba->hba_flag |= HBA_SP_QUEUE_EVT; spin_unlock_irqrestore(&phba->hbalock, iflags); workposted = true; break; case FC_STATUS_INSUFF_BUF_NEED_BUF: case FC_STATUS_INSUFF_BUF_FRM_DISC: /* Post more buffers if possible */ spin_lock_irqsave(&phba->hbalock, iflags); phba->hba_flag |= HBA_POST_RECEIVE_BUFFER; spin_unlock_irqrestore(&phba->hbalock, iflags); workposted = true; break; } out: return workposted; } /** * lpfc_sli4_sp_handle_cqe - Process a slow path completion queue entry * @phba: Pointer to HBA context object. * @cq: Pointer to the completion queue. * @wcqe: Pointer to a completion queue entry. * * This routine process a slow-path work-queue or recieve queue completion queue * entry. * * Return: true if work posted to worker thread, otherwise false. **/ static bool lpfc_sli4_sp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq, struct lpfc_cqe *cqe) { struct lpfc_cqe cqevt; bool workposted = false; /* Copy the work queue CQE and convert endian order if needed */ lpfc_sli_pcimem_bcopy(cqe, &cqevt, sizeof(struct lpfc_cqe)); /* Check and process for different type of WCQE and dispatch */ switch (bf_get(lpfc_cqe_code, &cqevt)) { case CQE_CODE_COMPL_WQE: /* Process the WQ/RQ complete event */ workposted = lpfc_sli4_sp_handle_els_wcqe(phba, (struct lpfc_wcqe_complete *)&cqevt); break; case CQE_CODE_RELEASE_WQE: /* Process the WQ release event */ lpfc_sli4_sp_handle_rel_wcqe(phba, (struct lpfc_wcqe_release *)&cqevt); break; case CQE_CODE_XRI_ABORTED: /* Process the WQ XRI abort event */ workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq, (struct sli4_wcqe_xri_aborted *)&cqevt); break; case CQE_CODE_RECEIVE: /* Process the RQ event */ workposted = lpfc_sli4_sp_handle_rcqe(phba, (struct lpfc_rcqe *)&cqevt); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0388 Not a valid WCQE code: x%x\n", bf_get(lpfc_cqe_code, &cqevt)); break; } return workposted; } /** * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry * @phba: Pointer to HBA context object. * @eqe: Pointer to fast-path event queue entry. * * This routine process a event queue entry from the slow-path event queue. * It will check the MajorCode and MinorCode to determine this is for a * completion event on a completion queue, if not, an error shall be logged * and just return. Otherwise, it will get to the corresponding completion * queue and process all the entries on that completion queue, rearm the * completion queue, and then return. * **/ static void lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe) { struct lpfc_queue *cq = NULL, *childq, *speq; struct lpfc_cqe *cqe; bool workposted = false; int ecount = 0; uint16_t cqid; if (bf_get_le32(lpfc_eqe_major_code, eqe) != 0) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0359 Not a valid slow-path completion " "event: majorcode=x%x, minorcode=x%x\n", bf_get_le32(lpfc_eqe_major_code, eqe), bf_get_le32(lpfc_eqe_minor_code, eqe)); return; } /* Get the reference to the corresponding CQ */ cqid = bf_get_le32(lpfc_eqe_resource_id, eqe); /* Search for completion queue pointer matching this cqid */ speq = phba->sli4_hba.sp_eq; list_for_each_entry(childq, &speq->child_list, list) { if (childq->queue_id == cqid) { cq = childq; break; } } if (unlikely(!cq)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0365 Slow-path CQ identifier (%d) does " "not exist\n", cqid); return; } /* Process all the entries to the CQ */ switch (cq->type) { case LPFC_MCQ: while ((cqe = lpfc_sli4_cq_get(cq))) { workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe); if (!(++ecount % LPFC_GET_QE_REL_INT)) lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); } break; case LPFC_WCQ: while ((cqe = lpfc_sli4_cq_get(cq))) { workposted |= lpfc_sli4_sp_handle_cqe(phba, cq, cqe); if (!(++ecount % LPFC_GET_QE_REL_INT)) lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); } break; default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0370 Invalid completion queue type (%d)\n", cq->type); return; } /* Catch the no cq entry condition, log an error */ if (unlikely(ecount == 0)) lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0371 No entry from the CQ: identifier " "(x%x), type (%d)\n", cq->queue_id, cq->type); /* In any case, flash and re-arm the RCQ */ lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM); /* wake up worker thread if there are works to be done */ if (workposted) lpfc_worker_wake_up(phba); } /** * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry * @eqe: Pointer to fast-path completion queue entry. * * This routine process a fast-path work queue completion entry from fast-path * event queue for FCP command response completion. **/ static void lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba, struct lpfc_wcqe_complete *wcqe) { struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_FCP_RING]; struct lpfc_iocbq *cmdiocbq; struct lpfc_iocbq irspiocbq; unsigned long iflags; spin_lock_irqsave(&phba->hbalock, iflags); pring->stats.iocb_event++; spin_unlock_irqrestore(&phba->hbalock, iflags); /* Check for response status */ if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) { /* If resource errors reported from HBA, reduce queue * depth of the SCSI device. */ if ((bf_get(lpfc_wcqe_c_status, wcqe) == IOSTAT_LOCAL_REJECT) && (wcqe->parameter == IOERR_NO_RESOURCES)) { phba->lpfc_rampdown_queue_depth(phba); } /* Log the error status */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0373 FCP complete error: status=x%x, " "hw_status=x%x, total_data_specified=%d, " "parameter=x%x, word3=x%x\n", bf_get(lpfc_wcqe_c_status, wcqe), bf_get(lpfc_wcqe_c_hw_status, wcqe), wcqe->total_data_placed, wcqe->parameter, wcqe->word3); } /* Look up the FCP command IOCB and create pseudo response IOCB */ spin_lock_irqsave(&phba->hbalock, iflags); cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring, bf_get(lpfc_wcqe_c_request_tag, wcqe)); spin_unlock_irqrestore(&phba->hbalock, iflags); if (unlikely(!cmdiocbq)) { lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0374 FCP complete with no corresponding " "cmdiocb: iotag (%d)\n", bf_get(lpfc_wcqe_c_request_tag, wcqe)); return; } if (unlikely(!cmdiocbq->iocb_cmpl)) { lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0375 FCP cmdiocb not callback function " "iotag: (%d)\n", bf_get(lpfc_wcqe_c_request_tag, wcqe)); return; } /* Fake the irspiocb and copy necessary response information */ lpfc_sli4_iocb_param_transfer(phba, &irspiocbq, cmdiocbq, wcqe); if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) { spin_lock_irqsave(&phba->hbalock, iflags); cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED; spin_unlock_irqrestore(&phba->hbalock, iflags); } /* Pass the cmd_iocb and the rsp state to the upper layer */ (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq); } /** * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event * @phba: Pointer to HBA context object. * @cq: Pointer to completion queue. * @wcqe: Pointer to work-queue completion queue entry. * * This routine handles an fast-path WQ entry comsumed event by invoking the * proper WQ release routine to the slow-path WQ. **/ static void lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, struct lpfc_wcqe_release *wcqe) { struct lpfc_queue *childwq; bool wqid_matched = false; uint16_t fcp_wqid; /* Check for fast-path FCP work queue release */ fcp_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe); list_for_each_entry(childwq, &cq->child_list, list) { if (childwq->queue_id == fcp_wqid) { lpfc_sli4_wq_release(childwq, bf_get(lpfc_wcqe_r_wqe_index, wcqe)); wqid_matched = true; break; } } /* Report warning log message if no match found */ if (wqid_matched != true) lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "2580 Fast-path wqe consume event carries " "miss-matched qid: wcqe-qid=x%x\n", fcp_wqid); } /** * lpfc_sli4_fp_handle_wcqe - Process fast-path work queue completion entry * @cq: Pointer to the completion queue. * @eqe: Pointer to fast-path completion queue entry. * * This routine process a fast-path work queue completion entry from fast-path * event queue for FCP command response completion. **/ static int lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, struct lpfc_cqe *cqe) { struct lpfc_wcqe_release wcqe; bool workposted = false; /* Copy the work queue CQE and convert endian order if needed */ lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe)); /* Check and process for different type of WCQE and dispatch */ switch (bf_get(lpfc_wcqe_c_code, &wcqe)) { case CQE_CODE_COMPL_WQE: /* Process the WQ complete event */ lpfc_sli4_fp_handle_fcp_wcqe(phba, (struct lpfc_wcqe_complete *)&wcqe); break; case CQE_CODE_RELEASE_WQE: /* Process the WQ release event */ lpfc_sli4_fp_handle_rel_wcqe(phba, cq, (struct lpfc_wcqe_release *)&wcqe); break; case CQE_CODE_XRI_ABORTED: /* Process the WQ XRI abort event */ workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq, (struct sli4_wcqe_xri_aborted *)&wcqe); break; default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0144 Not a valid WCQE code: x%x\n", bf_get(lpfc_wcqe_c_code, &wcqe)); break; } return workposted; } /** * lpfc_sli4_fp_handle_eqe - Process a fast-path event queue entry * @phba: Pointer to HBA context object. * @eqe: Pointer to fast-path event queue entry. * * This routine process a event queue entry from the fast-path event queue. * It will check the MajorCode and MinorCode to determine this is for a * completion event on a completion queue, if not, an error shall be logged * and just return. Otherwise, it will get to the corresponding completion * queue and process all the entries on the completion queue, rearm the * completion queue, and then return. **/ static void lpfc_sli4_fp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe, uint32_t fcp_cqidx) { struct lpfc_queue *cq; struct lpfc_cqe *cqe; bool workposted = false; uint16_t cqid; int ecount = 0; if (unlikely(bf_get_le32(lpfc_eqe_major_code, eqe) != 0)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0366 Not a valid fast-path completion " "event: majorcode=x%x, minorcode=x%x\n", bf_get_le32(lpfc_eqe_major_code, eqe), bf_get_le32(lpfc_eqe_minor_code, eqe)); return; } cq = phba->sli4_hba.fcp_cq[fcp_cqidx]; if (unlikely(!cq)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0367 Fast-path completion queue does not " "exist\n"); return; } /* Get the reference to the corresponding CQ */ cqid = bf_get_le32(lpfc_eqe_resource_id, eqe); if (unlikely(cqid != cq->queue_id)) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0368 Miss-matched fast-path completion " "queue identifier: eqcqid=%d, fcpcqid=%d\n", cqid, cq->queue_id); return; } /* Process all the entries to the CQ */ while ((cqe = lpfc_sli4_cq_get(cq))) { workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe); if (!(++ecount % LPFC_GET_QE_REL_INT)) lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); } /* Catch the no cq entry condition */ if (unlikely(ecount == 0)) lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0369 No entry from fast-path completion " "queue fcpcqid=%d\n", cq->queue_id); /* In any case, flash and re-arm the CQ */ lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM); /* wake up worker thread if there are works to be done */ if (workposted) lpfc_worker_wake_up(phba); } static void lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq) { struct lpfc_eqe *eqe; /* walk all the EQ entries and drop on the floor */ while ((eqe = lpfc_sli4_eq_get(eq))) ; /* Clear and re-arm the EQ */ lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM); } /** * lpfc_sli4_sp_intr_handler - Slow-path interrupt handler to SLI-4 device * @irq: Interrupt number. * @dev_id: The device context pointer. * * This function is directly called from the PCI layer as an interrupt * service routine when device with SLI-4 interface spec is enabled with * MSI-X multi-message interrupt mode and there are slow-path events in * the HBA. However, when the device is enabled with either MSI or Pin-IRQ * interrupt mode, this function is called as part of the device-level * interrupt handler. When the PCI slot is in error recovery or the HBA is * undergoing initialization, the interrupt handler will not process the * interrupt. The link attention and ELS ring attention events are handled * by the worker thread. The interrupt handler signals the worker thread * and returns for these events. This function is called without any lock * held. It gets the hbalock to access and update SLI data structures. * * This function returns IRQ_HANDLED when interrupt is handled else it * returns IRQ_NONE. **/ irqreturn_t lpfc_sli4_sp_intr_handler(int irq, void *dev_id) { struct lpfc_hba *phba; struct lpfc_queue *speq; struct lpfc_eqe *eqe; unsigned long iflag; int ecount = 0; /* * Get the driver's phba structure from the dev_id */ phba = (struct lpfc_hba *)dev_id; if (unlikely(!phba)) return IRQ_NONE; /* Get to the EQ struct associated with this vector */ speq = phba->sli4_hba.sp_eq; /* Check device state for handling interrupt */ if (unlikely(lpfc_intr_state_check(phba))) { /* Check again for link_state with lock held */ spin_lock_irqsave(&phba->hbalock, iflag); if (phba->link_state < LPFC_LINK_DOWN) /* Flush, clear interrupt, and rearm the EQ */ lpfc_sli4_eq_flush(phba, speq); spin_unlock_irqrestore(&phba->hbalock, iflag); return IRQ_NONE; } /* * Process all the event on FCP slow-path EQ */ while ((eqe = lpfc_sli4_eq_get(speq))) { lpfc_sli4_sp_handle_eqe(phba, eqe); if (!(++ecount % LPFC_GET_QE_REL_INT)) lpfc_sli4_eq_release(speq, LPFC_QUEUE_NOARM); } /* Always clear and re-arm the slow-path EQ */ lpfc_sli4_eq_release(speq, LPFC_QUEUE_REARM); /* Catch the no cq entry condition */ if (unlikely(ecount == 0)) { if (phba->intr_type == MSIX) /* MSI-X treated interrupt served as no EQ share INT */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0357 MSI-X interrupt with no EQE\n"); else /* Non MSI-X treated on interrupt as EQ share INT */ return IRQ_NONE; } return IRQ_HANDLED; } /* lpfc_sli4_sp_intr_handler */ /** * lpfc_sli4_fp_intr_handler - Fast-path interrupt handler to SLI-4 device * @irq: Interrupt number. * @dev_id: The device context pointer. * * This function is directly called from the PCI layer as an interrupt * service routine when device with SLI-4 interface spec is enabled with * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB * ring event in the HBA. However, when the device is enabled with either * MSI or Pin-IRQ interrupt mode, this function is called as part of the * device-level interrupt handler. When the PCI slot is in error recovery * or the HBA is undergoing initialization, the interrupt handler will not * process the interrupt. The SCSI FCP fast-path ring event are handled in * the intrrupt context. This function is called without any lock held. * It gets the hbalock to access and update SLI data structures. Note that, * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is * equal to that of FCP CQ index. * * This function returns IRQ_HANDLED when interrupt is handled else it * returns IRQ_NONE. **/ irqreturn_t lpfc_sli4_fp_intr_handler(int irq, void *dev_id) { struct lpfc_hba *phba; struct lpfc_fcp_eq_hdl *fcp_eq_hdl; struct lpfc_queue *fpeq; struct lpfc_eqe *eqe; unsigned long iflag; int ecount = 0; uint32_t fcp_eqidx; /* Get the driver's phba structure from the dev_id */ fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id; phba = fcp_eq_hdl->phba; fcp_eqidx = fcp_eq_hdl->idx; if (unlikely(!phba)) return IRQ_NONE; /* Get to the EQ struct associated with this vector */ fpeq = phba->sli4_hba.fp_eq[fcp_eqidx]; /* Check device state for handling interrupt */ if (unlikely(lpfc_intr_state_check(phba))) { /* Check again for link_state with lock held */ spin_lock_irqsave(&phba->hbalock, iflag); if (phba->link_state < LPFC_LINK_DOWN) /* Flush, clear interrupt, and rearm the EQ */ lpfc_sli4_eq_flush(phba, fpeq); spin_unlock_irqrestore(&phba->hbalock, iflag); return IRQ_NONE; } /* * Process all the event on FCP fast-path EQ */ while ((eqe = lpfc_sli4_eq_get(fpeq))) { lpfc_sli4_fp_handle_eqe(phba, eqe, fcp_eqidx); if (!(++ecount % LPFC_GET_QE_REL_INT)) lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM); } /* Always clear and re-arm the fast-path EQ */ lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM); if (unlikely(ecount == 0)) { if (phba->intr_type == MSIX) /* MSI-X treated interrupt served as no EQ share INT */ lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "0358 MSI-X interrupt with no EQE\n"); else /* Non MSI-X treated on interrupt as EQ share INT */ return IRQ_NONE; } return IRQ_HANDLED; } /* lpfc_sli4_fp_intr_handler */ /** * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device * @irq: Interrupt number. * @dev_id: The device context pointer. * * This function is the device-level interrupt handler to device with SLI-4 * interface spec, called from the PCI layer when either MSI or Pin-IRQ * interrupt mode is enabled and there is an event in the HBA which requires * driver attention. This function invokes the slow-path interrupt attention * handling function and fast-path interrupt attention handling function in * turn to process the relevant HBA attention events. This function is called * without any lock held. It gets the hbalock to access and update SLI data * structures. * * This function returns IRQ_HANDLED when interrupt is handled, else it * returns IRQ_NONE. **/ irqreturn_t lpfc_sli4_intr_handler(int irq, void *dev_id) { struct lpfc_hba *phba; irqreturn_t sp_irq_rc, fp_irq_rc; bool fp_handled = false; uint32_t fcp_eqidx; /* Get the driver's phba structure from the dev_id */ phba = (struct lpfc_hba *)dev_id; if (unlikely(!phba)) return IRQ_NONE; /* * Invokes slow-path host attention interrupt handling as appropriate. */ sp_irq_rc = lpfc_sli4_sp_intr_handler(irq, dev_id); /* * Invoke fast-path host attention interrupt handling as appropriate. */ for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) { fp_irq_rc = lpfc_sli4_fp_intr_handler(irq, &phba->sli4_hba.fcp_eq_hdl[fcp_eqidx]); if (fp_irq_rc == IRQ_HANDLED) fp_handled |= true; } return (fp_handled == true) ? IRQ_HANDLED : sp_irq_rc; } /* lpfc_sli4_intr_handler */ /** * lpfc_sli4_queue_free - free a queue structure and associated memory * @queue: The queue structure to free. * * This function frees a queue structure and the DMAable memeory used for * the host resident queue. This function must be called after destroying the * queue on the HBA. **/ void lpfc_sli4_queue_free(struct lpfc_queue *queue) { struct lpfc_dmabuf *dmabuf; if (!queue) return; while (!list_empty(&queue->page_list)) { list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf, list); dma_free_coherent(&queue->phba->pcidev->dev, PAGE_SIZE, dmabuf->virt, dmabuf->phys); kfree(dmabuf); } kfree(queue); return; } /** * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure * @phba: The HBA that this queue is being created on. * @entry_size: The size of each queue entry for this queue. * @entry count: The number of entries that this queue will handle. * * This function allocates a queue structure and the DMAable memory used for * the host resident queue. This function must be called before creating the * queue on the HBA. **/ struct lpfc_queue * lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size, uint32_t entry_count) { struct lpfc_queue *queue; struct lpfc_dmabuf *dmabuf; int x, total_qe_count; void *dma_pointer; uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz; if (!phba->sli4_hba.pc_sli4_params.supported) hw_page_size = SLI4_PAGE_SIZE; queue = kzalloc(sizeof(struct lpfc_queue) + (sizeof(union sli4_qe) * entry_count), GFP_KERNEL); if (!queue) return NULL; queue->page_count = (ALIGN(entry_size * entry_count, hw_page_size))/hw_page_size; INIT_LIST_HEAD(&queue->list); INIT_LIST_HEAD(&queue->page_list); INIT_LIST_HEAD(&queue->child_list); for (x = 0, total_qe_count = 0; x < queue->page_count; x++) { dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!dmabuf) goto out_fail; dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, hw_page_size, &dmabuf->phys, GFP_KERNEL); if (!dmabuf->virt) { kfree(dmabuf); goto out_fail; } memset(dmabuf->virt, 0, hw_page_size); dmabuf->buffer_tag = x; list_add_tail(&dmabuf->list, &queue->page_list); /* initialize queue's entry array */ dma_pointer = dmabuf->virt; for (; total_qe_count < entry_count && dma_pointer < (hw_page_size + dmabuf->virt); total_qe_count++, dma_pointer += entry_size) { queue->qe[total_qe_count].address = dma_pointer; } } queue->entry_size = entry_size; queue->entry_count = entry_count; queue->phba = phba; return queue; out_fail: lpfc_sli4_queue_free(queue); return NULL; } /** * lpfc_eq_create - Create an Event Queue on the HBA * @phba: HBA structure that indicates port to create a queue on. * @eq: The queue structure to use to create the event queue. * @imax: The maximum interrupt per second limit. * * This function creates an event queue, as detailed in @eq, on a port, * described by @phba by sending an EQ_CREATE mailbox command to the HBA. * * The @phba struct is used to send mailbox command to HBA. The @eq struct * is used to get the entry count and entry size that are necessary to * determine the number of pages to allocate and use for this queue. This * function will send the EQ_CREATE mailbox command to the HBA to setup the * event queue. This function is asynchronous and will wait for the mailbox * command to finish before continuing. * * On success this function will return a zero. If unable to allocate enough * memory this function will return ENOMEM. If the queue create mailbox command * fails this function will return ENXIO. **/ uint32_t lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax) { struct lpfc_mbx_eq_create *eq_create; LPFC_MBOXQ_t *mbox; int rc, length, status = 0; struct lpfc_dmabuf *dmabuf; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; uint16_t dmult; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_eq_create) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_EQ_CREATE, length, LPFC_SLI4_MBX_EMBED); eq_create = &mbox->u.mqe.un.eq_create; bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request, eq->page_count); bf_set(lpfc_eq_context_size, &eq_create->u.request.context, LPFC_EQE_SIZE); bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1); /* Calculate delay multiper from maximum interrupt per second */ dmult = LPFC_DMULT_CONST/imax - 1; bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context, dmult); switch (eq->entry_count) { default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0360 Unsupported EQ count. (%d)\n", eq->entry_count); if (eq->entry_count < 256) return -EINVAL; /* otherwise default to smallest count (drop through) */ case 256: bf_set(lpfc_eq_context_count, &eq_create->u.request.context, LPFC_EQ_CNT_256); break; case 512: bf_set(lpfc_eq_context_count, &eq_create->u.request.context, LPFC_EQ_CNT_512); break; case 1024: bf_set(lpfc_eq_context_count, &eq_create->u.request.context, LPFC_EQ_CNT_1024); break; case 2048: bf_set(lpfc_eq_context_count, &eq_create->u.request.context, LPFC_EQ_CNT_2048); break; case 4096: bf_set(lpfc_eq_context_count, &eq_create->u.request.context, LPFC_EQ_CNT_4096); break; } list_for_each_entry(dmabuf, &eq->page_list, list) { eq_create->u.request.page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys); eq_create->u.request.page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys); } mbox->vport = phba->pport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; mbox->context1 = NULL; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2500 EQ_CREATE mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; } eq->type = LPFC_EQ; eq->subtype = LPFC_NONE; eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response); if (eq->queue_id == 0xFFFF) status = -ENXIO; eq->host_index = 0; eq->hba_index = 0; mempool_free(mbox, phba->mbox_mem_pool); return status; } /** * lpfc_cq_create - Create a Completion Queue on the HBA * @phba: HBA structure that indicates port to create a queue on. * @cq: The queue structure to use to create the completion queue. * @eq: The event queue to bind this completion queue to. * * This function creates a completion queue, as detailed in @wq, on a port, * described by @phba by sending a CQ_CREATE mailbox command to the HBA. * * The @phba struct is used to send mailbox command to HBA. The @cq struct * is used to get the entry count and entry size that are necessary to * determine the number of pages to allocate and use for this queue. The @eq * is used to indicate which event queue to bind this completion queue to. This * function will send the CQ_CREATE mailbox command to the HBA to setup the * completion queue. This function is asynchronous and will wait for the mailbox * command to finish before continuing. * * On success this function will return a zero. If unable to allocate enough * memory this function will return ENOMEM. If the queue create mailbox command * fails this function will return ENXIO. **/ uint32_t lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq, struct lpfc_queue *eq, uint32_t type, uint32_t subtype) { struct lpfc_mbx_cq_create *cq_create; struct lpfc_dmabuf *dmabuf; LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_cq_create) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_CQ_CREATE, length, LPFC_SLI4_MBX_EMBED); cq_create = &mbox->u.mqe.un.cq_create; bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request, cq->page_count); bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1); bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1); bf_set(lpfc_cq_eq_id, &cq_create->u.request.context, eq->queue_id); switch (cq->entry_count) { default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0361 Unsupported CQ count. (%d)\n", cq->entry_count); if (cq->entry_count < 256) return -EINVAL; /* otherwise default to smallest count (drop through) */ case 256: bf_set(lpfc_cq_context_count, &cq_create->u.request.context, LPFC_CQ_CNT_256); break; case 512: bf_set(lpfc_cq_context_count, &cq_create->u.request.context, LPFC_CQ_CNT_512); break; case 1024: bf_set(lpfc_cq_context_count, &cq_create->u.request.context, LPFC_CQ_CNT_1024); break; } list_for_each_entry(dmabuf, &cq->page_list, list) { cq_create->u.request.page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys); cq_create->u.request.page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys); } rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2501 CQ_CREATE mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; goto out; } cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response); if (cq->queue_id == 0xFFFF) { status = -ENXIO; goto out; } /* link the cq onto the parent eq child list */ list_add_tail(&cq->list, &eq->child_list); /* Set up completion queue's type and subtype */ cq->type = type; cq->subtype = subtype; cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response); cq->host_index = 0; cq->hba_index = 0; out: mempool_free(mbox, phba->mbox_mem_pool); return status; } /** * lpfc_mq_create - Create a mailbox Queue on the HBA * @phba: HBA structure that indicates port to create a queue on. * @mq: The queue structure to use to create the mailbox queue. * * This function creates a mailbox queue, as detailed in @mq, on a port, * described by @phba by sending a MQ_CREATE mailbox command to the HBA. * * The @phba struct is used to send mailbox command to HBA. The @cq struct * is used to get the entry count and entry size that are necessary to * determine the number of pages to allocate and use for this queue. This * function will send the MQ_CREATE mailbox command to the HBA to setup the * mailbox queue. This function is asynchronous and will wait for the mailbox * command to finish before continuing. * * On success this function will return a zero. If unable to allocate enough * memory this function will return ENOMEM. If the queue create mailbox command * fails this function will return ENXIO. **/ uint32_t lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq, struct lpfc_queue *cq, uint32_t subtype) { struct lpfc_mbx_mq_create *mq_create; struct lpfc_dmabuf *dmabuf; LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_mq_create) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_MQ_CREATE, length, LPFC_SLI4_MBX_EMBED); mq_create = &mbox->u.mqe.un.mq_create; bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request, mq->page_count); bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context, cq->queue_id); bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1); switch (mq->entry_count) { default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0362 Unsupported MQ count. (%d)\n", mq->entry_count); if (mq->entry_count < 16) return -EINVAL; /* otherwise default to smallest count (drop through) */ case 16: bf_set(lpfc_mq_context_count, &mq_create->u.request.context, LPFC_MQ_CNT_16); break; case 32: bf_set(lpfc_mq_context_count, &mq_create->u.request.context, LPFC_MQ_CNT_32); break; case 64: bf_set(lpfc_mq_context_count, &mq_create->u.request.context, LPFC_MQ_CNT_64); break; case 128: bf_set(lpfc_mq_context_count, &mq_create->u.request.context, LPFC_MQ_CNT_128); break; } list_for_each_entry(dmabuf, &mq->page_list, list) { mq_create->u.request.page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys); mq_create->u.request.page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys); } rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2502 MQ_CREATE mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; goto out; } mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id, &mq_create->u.response); if (mq->queue_id == 0xFFFF) { status = -ENXIO; goto out; } mq->type = LPFC_MQ; mq->subtype = subtype; mq->host_index = 0; mq->hba_index = 0; /* link the mq onto the parent cq child list */ list_add_tail(&mq->list, &cq->child_list); out: mempool_free(mbox, phba->mbox_mem_pool); return status; } /** * lpfc_wq_create - Create a Work Queue on the HBA * @phba: HBA structure that indicates port to create a queue on. * @wq: The queue structure to use to create the work queue. * @cq: The completion queue to bind this work queue to. * @subtype: The subtype of the work queue indicating its functionality. * * This function creates a work queue, as detailed in @wq, on a port, described * by @phba by sending a WQ_CREATE mailbox command to the HBA. * * The @phba struct is used to send mailbox command to HBA. The @wq struct * is used to get the entry count and entry size that are necessary to * determine the number of pages to allocate and use for this queue. The @cq * is used to indicate which completion queue to bind this work queue to. This * function will send the WQ_CREATE mailbox command to the HBA to setup the * work queue. This function is asynchronous and will wait for the mailbox * command to finish before continuing. * * On success this function will return a zero. If unable to allocate enough * memory this function will return ENOMEM. If the queue create mailbox command * fails this function will return ENXIO. **/ uint32_t lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq, struct lpfc_queue *cq, uint32_t subtype) { struct lpfc_mbx_wq_create *wq_create; struct lpfc_dmabuf *dmabuf; LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_wq_create) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_WQ_CREATE, length, LPFC_SLI4_MBX_EMBED); wq_create = &mbox->u.mqe.un.wq_create; bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request, wq->page_count); bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request, cq->queue_id); list_for_each_entry(dmabuf, &wq->page_list, list) { wq_create->u.request.page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys); wq_create->u.request.page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys); } rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2503 WQ_CREATE mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; goto out; } wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id, &wq_create->u.response); if (wq->queue_id == 0xFFFF) { status = -ENXIO; goto out; } wq->type = LPFC_WQ; wq->subtype = subtype; wq->host_index = 0; wq->hba_index = 0; /* link the wq onto the parent cq child list */ list_add_tail(&wq->list, &cq->child_list); out: mempool_free(mbox, phba->mbox_mem_pool); return status; } /** * lpfc_rq_create - Create a Receive Queue on the HBA * @phba: HBA structure that indicates port to create a queue on. * @hrq: The queue structure to use to create the header receive queue. * @drq: The queue structure to use to create the data receive queue. * @cq: The completion queue to bind this work queue to. * * This function creates a receive buffer queue pair , as detailed in @hrq and * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command * to the HBA. * * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq * struct is used to get the entry count that is necessary to determine the * number of pages to use for this queue. The @cq is used to indicate which * completion queue to bind received buffers that are posted to these queues to. * This function will send the RQ_CREATE mailbox command to the HBA to setup the * receive queue pair. This function is asynchronous and will wait for the * mailbox command to finish before continuing. * * On success this function will return a zero. If unable to allocate enough * memory this function will return ENOMEM. If the queue create mailbox command * fails this function will return ENXIO. **/ uint32_t lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq, struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype) { struct lpfc_mbx_rq_create *rq_create; struct lpfc_dmabuf *dmabuf; LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; if (hrq->entry_count != drq->entry_count) return -EINVAL; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_rq_create) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, length, LPFC_SLI4_MBX_EMBED); rq_create = &mbox->u.mqe.un.rq_create; switch (hrq->entry_count) { default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2535 Unsupported RQ count. (%d)\n", hrq->entry_count); if (hrq->entry_count < 512) return -EINVAL; /* otherwise default to smallest count (drop through) */ case 512: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_512); break; case 1024: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_1024); break; case 2048: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_2048); break; case 4096: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_4096); break; } bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context, cq->queue_id); bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request, hrq->page_count); bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context, LPFC_HDR_BUF_SIZE); list_for_each_entry(dmabuf, &hrq->page_list, list) { rq_create->u.request.page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys); rq_create->u.request.page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys); } rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2504 RQ_CREATE mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; goto out; } hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response); if (hrq->queue_id == 0xFFFF) { status = -ENXIO; goto out; } hrq->type = LPFC_HRQ; hrq->subtype = subtype; hrq->host_index = 0; hrq->hba_index = 0; /* now create the data queue */ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, length, LPFC_SLI4_MBX_EMBED); switch (drq->entry_count) { default: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2536 Unsupported RQ count. (%d)\n", drq->entry_count); if (drq->entry_count < 512) return -EINVAL; /* otherwise default to smallest count (drop through) */ case 512: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_512); break; case 1024: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_1024); break; case 2048: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_2048); break; case 4096: bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, LPFC_RQ_RING_SIZE_4096); break; } bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context, cq->queue_id); bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request, drq->page_count); bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context, LPFC_DATA_BUF_SIZE); list_for_each_entry(dmabuf, &drq->page_list, list) { rq_create->u.request.page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys); rq_create->u.request.page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys); } rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { status = -ENXIO; goto out; } drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response); if (drq->queue_id == 0xFFFF) { status = -ENXIO; goto out; } drq->type = LPFC_DRQ; drq->subtype = subtype; drq->host_index = 0; drq->hba_index = 0; /* link the header and data RQs onto the parent cq child list */ list_add_tail(&hrq->list, &cq->child_list); list_add_tail(&drq->list, &cq->child_list); out: mempool_free(mbox, phba->mbox_mem_pool); return status; } /** * lpfc_eq_destroy - Destroy an event Queue on the HBA * @eq: The queue structure associated with the queue to destroy. * * This function destroys a queue, as detailed in @eq by sending an mailbox * command, specific to the type of queue, to the HBA. * * The @eq struct is used to get the queue ID of the queue to destroy. * * On success this function will return a zero. If the queue destroy mailbox * command fails this function will return ENXIO. **/ uint32_t lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq) { LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; if (!eq) return -ENODEV; mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_eq_destroy) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_EQ_DESTROY, length, LPFC_SLI4_MBX_EMBED); bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request, eq->queue_id); mbox->vport = eq->phba->pport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &mbox->u.mqe.un.eq_destroy.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2505 EQ_DESTROY mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; } /* Remove eq from any list */ list_del_init(&eq->list); mempool_free(mbox, eq->phba->mbox_mem_pool); return status; } /** * lpfc_cq_destroy - Destroy a Completion Queue on the HBA * @cq: The queue structure associated with the queue to destroy. * * This function destroys a queue, as detailed in @cq by sending an mailbox * command, specific to the type of queue, to the HBA. * * The @cq struct is used to get the queue ID of the queue to destroy. * * On success this function will return a zero. If the queue destroy mailbox * command fails this function will return ENXIO. **/ uint32_t lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq) { LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; if (!cq) return -ENODEV; mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_cq_destroy) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_CQ_DESTROY, length, LPFC_SLI4_MBX_EMBED); bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request, cq->queue_id); mbox->vport = cq->phba->pport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &mbox->u.mqe.un.wq_create.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2506 CQ_DESTROY mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; } /* Remove cq from any list */ list_del_init(&cq->list); mempool_free(mbox, cq->phba->mbox_mem_pool); return status; } /** * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA * @qm: The queue structure associated with the queue to destroy. * * This function destroys a queue, as detailed in @mq by sending an mailbox * command, specific to the type of queue, to the HBA. * * The @mq struct is used to get the queue ID of the queue to destroy. * * On success this function will return a zero. If the queue destroy mailbox * command fails this function will return ENXIO. **/ uint32_t lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq) { LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; if (!mq) return -ENODEV; mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_mq_destroy) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, LPFC_MBOX_OPCODE_MQ_DESTROY, length, LPFC_SLI4_MBX_EMBED); bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request, mq->queue_id); mbox->vport = mq->phba->pport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &mbox->u.mqe.un.mq_destroy.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2507 MQ_DESTROY mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; } /* Remove mq from any list */ list_del_init(&mq->list); mempool_free(mbox, mq->phba->mbox_mem_pool); return status; } /** * lpfc_wq_destroy - Destroy a Work Queue on the HBA * @wq: The queue structure associated with the queue to destroy. * * This function destroys a queue, as detailed in @wq by sending an mailbox * command, specific to the type of queue, to the HBA. * * The @wq struct is used to get the queue ID of the queue to destroy. * * On success this function will return a zero. If the queue destroy mailbox * command fails this function will return ENXIO. **/ uint32_t lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq) { LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; if (!wq) return -ENODEV; mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_wq_destroy) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY, length, LPFC_SLI4_MBX_EMBED); bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request, wq->queue_id); mbox->vport = wq->phba->pport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &mbox->u.mqe.un.wq_destroy.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2508 WQ_DESTROY mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; } /* Remove wq from any list */ list_del_init(&wq->list); mempool_free(mbox, wq->phba->mbox_mem_pool); return status; } /** * lpfc_rq_destroy - Destroy a Receive Queue on the HBA * @rq: The queue structure associated with the queue to destroy. * * This function destroys a queue, as detailed in @rq by sending an mailbox * command, specific to the type of queue, to the HBA. * * The @rq struct is used to get the queue ID of the queue to destroy. * * On success this function will return a zero. If the queue destroy mailbox * command fails this function will return ENXIO. **/ uint32_t lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq, struct lpfc_queue *drq) { LPFC_MBOXQ_t *mbox; int rc, length, status = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; if (!hrq || !drq) return -ENODEV; mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; length = (sizeof(struct lpfc_mbx_rq_destroy) - sizeof(struct mbox_header)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY, length, LPFC_SLI4_MBX_EMBED); bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request, hrq->queue_id); mbox->vport = hrq->phba->pport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &mbox->u.mqe.un.rq_destroy.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2509 RQ_DESTROY mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); if (rc != MBX_TIMEOUT) mempool_free(mbox, hrq->phba->mbox_mem_pool); return -ENXIO; } bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request, drq->queue_id); rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &mbox->u.mqe.un.rq_destroy.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2510 RQ_DESTROY mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); status = -ENXIO; } list_del_init(&hrq->list); list_del_init(&drq->list); mempool_free(mbox, hrq->phba->mbox_mem_pool); return status; } /** * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA * @phba: The virtual port for which this call being executed. * @pdma_phys_addr0: Physical address of the 1st SGL page. * @pdma_phys_addr1: Physical address of the 2nd SGL page. * @xritag: the xritag that ties this io to the SGL pages. * * This routine will post the sgl pages for the IO that has the xritag * that is in the iocbq structure. The xritag is assigned during iocbq * creation and persists for as long as the driver is loaded. * if the caller has fewer than 256 scatter gather segments to map then * pdma_phys_addr1 should be 0. * If the caller needs to map more than 256 scatter gather segment then * pdma_phys_addr1 should be a valid physical address. * physical address for SGLs must be 64 byte aligned. * If you are going to map 2 SGL's then the first one must have 256 entries * the second sgl can have between 1 and 256 entries. * * Return codes: * 0 - Success * -ENXIO, -ENOMEM - Failure **/ int lpfc_sli4_post_sgl(struct lpfc_hba *phba, dma_addr_t pdma_phys_addr0, dma_addr_t pdma_phys_addr1, uint16_t xritag) { struct lpfc_mbx_post_sgl_pages *post_sgl_pages; LPFC_MBOXQ_t *mbox; int rc; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; if (xritag == NO_XRI) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "0364 Invalid param:\n"); return -EINVAL; } mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, sizeof(struct lpfc_mbx_post_sgl_pages) - sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED); post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *) &mbox->u.mqe.un.post_sgl_pages; bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag); bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1); post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_addr0)); post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_addr0)); post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_addr1)); post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_addr1)); if (!phba->sli4_hba.intr_enable) rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); else rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (rc != MBX_TIMEOUT) mempool_free(mbox, phba->mbox_mem_pool); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2511 POST_SGL mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); rc = -ENXIO; } return 0; } /** * lpfc_sli4_remove_all_sgl_pages - Post scatter gather list for an XRI to HBA * @phba: The virtual port for which this call being executed. * * This routine will remove all of the sgl pages registered with the hba. * * Return codes: * 0 - Success * -ENXIO, -ENOMEM - Failure **/ int lpfc_sli4_remove_all_sgl_pages(struct lpfc_hba *phba) { LPFC_MBOXQ_t *mbox; int rc; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_REMOVE_SGL_PAGES, 0, LPFC_SLI4_MBX_EMBED); if (!phba->sli4_hba.intr_enable) rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); else rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) &mbox->u.mqe.un.sli4_config.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (rc != MBX_TIMEOUT) mempool_free(mbox, phba->mbox_mem_pool); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2512 REMOVE_ALL_SGL_PAGES mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); rc = -ENXIO; } return rc; } /** * lpfc_sli4_next_xritag - Get an xritag for the io * @phba: Pointer to HBA context object. * * This function gets an xritag for the iocb. If there is no unused xritag * it will return 0xffff. * The function returns the allocated xritag if successful, else returns zero. * Zero is not a valid xritag. * The caller is not required to hold any lock. **/ uint16_t lpfc_sli4_next_xritag(struct lpfc_hba *phba) { uint16_t xritag; spin_lock_irq(&phba->hbalock); xritag = phba->sli4_hba.next_xri; if ((xritag != (uint16_t) -1) && xritag < (phba->sli4_hba.max_cfg_param.max_xri + phba->sli4_hba.max_cfg_param.xri_base)) { phba->sli4_hba.next_xri++; phba->sli4_hba.max_cfg_param.xri_used++; spin_unlock_irq(&phba->hbalock); return xritag; } spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "2004 Failed to allocate XRI.last XRITAG is %d" " Max XRI is %d, Used XRI is %d\n", phba->sli4_hba.next_xri, phba->sli4_hba.max_cfg_param.max_xri, phba->sli4_hba.max_cfg_param.xri_used); return -1; } /** * lpfc_sli4_post_sgl_list - post a block of sgl list to the firmware. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to post a block of driver's sgl pages to the * HBA using non-embedded mailbox command. No Lock is held. This routine * is only called when the driver is loading and after all IO has been * stopped. **/ int lpfc_sli4_post_sgl_list(struct lpfc_hba *phba) { struct lpfc_sglq *sglq_entry; struct lpfc_mbx_post_uembed_sgl_page1 *sgl; struct sgl_page_pairs *sgl_pg_pairs; void *viraddr; LPFC_MBOXQ_t *mbox; uint32_t reqlen, alloclen, pg_pairs; uint32_t mbox_tmo; uint16_t xritag_start = 0; int els_xri_cnt, rc = 0; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; /* The number of sgls to be posted */ els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba); reqlen = els_xri_cnt * sizeof(struct sgl_page_pairs) + sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); if (reqlen > PAGE_SIZE) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "2559 Block sgl registration required DMA " "size (%d) great than a page\n", reqlen); return -ENOMEM; } mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2560 Failed to allocate mbox cmd memory\n"); return -ENOMEM; } /* Allocate DMA memory and set up the non-embedded mailbox command */ alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, LPFC_SLI4_MBX_NEMBED); if (alloclen < reqlen) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0285 Allocated DMA memory size (%d) is " "less than the requested DMA memory " "size (%d)\n", alloclen, reqlen); lpfc_sli4_mbox_cmd_free(phba, mbox); return -ENOMEM; } /* Get the first SGE entry from the non-embedded DMA memory */ viraddr = mbox->sge_array->addr[0]; /* Set up the SGL pages in the non-embedded DMA pages */ sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; sgl_pg_pairs = &sgl->sgl_pg_pairs; for (pg_pairs = 0; pg_pairs < els_xri_cnt; pg_pairs++) { sglq_entry = phba->sli4_hba.lpfc_els_sgl_array[pg_pairs]; /* Set up the sge entry */ sgl_pg_pairs->sgl_pg0_addr_lo = cpu_to_le32(putPaddrLow(sglq_entry->phys)); sgl_pg_pairs->sgl_pg0_addr_hi = cpu_to_le32(putPaddrHigh(sglq_entry->phys)); sgl_pg_pairs->sgl_pg1_addr_lo = cpu_to_le32(putPaddrLow(0)); sgl_pg_pairs->sgl_pg1_addr_hi = cpu_to_le32(putPaddrHigh(0)); /* Keep the first xritag on the list */ if (pg_pairs == 0) xritag_start = sglq_entry->sli4_xritag; sgl_pg_pairs++; } bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); bf_set(lpfc_post_sgl_pages_xricnt, sgl, els_xri_cnt); /* Perform endian conversion if necessary */ sgl->word0 = cpu_to_le32(sgl->word0); if (!phba->sli4_hba.intr_enable) rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); else { mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG); rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); } shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (rc != MBX_TIMEOUT) lpfc_sli4_mbox_cmd_free(phba, mbox); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2513 POST_SGL_BLOCK mailbox command failed " "status x%x add_status x%x mbx status x%x\n", shdr_status, shdr_add_status, rc); rc = -ENXIO; } return rc; } /** * lpfc_sli4_post_scsi_sgl_block - post a block of scsi sgl list to firmware * @phba: pointer to lpfc hba data structure. * @sblist: pointer to scsi buffer list. * @count: number of scsi buffers on the list. * * This routine is invoked to post a block of @count scsi sgl pages from a * SCSI buffer list @sblist to the HBA using non-embedded mailbox command. * No Lock is held. * **/ int lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, struct list_head *sblist, int cnt) { struct lpfc_scsi_buf *psb; struct lpfc_mbx_post_uembed_sgl_page1 *sgl; struct sgl_page_pairs *sgl_pg_pairs; void *viraddr; LPFC_MBOXQ_t *mbox; uint32_t reqlen, alloclen, pg_pairs; uint32_t mbox_tmo; uint16_t xritag_start = 0; int rc = 0; uint32_t shdr_status, shdr_add_status; dma_addr_t pdma_phys_bpl1; union lpfc_sli4_cfg_shdr *shdr; /* Calculate the requested length of the dma memory */ reqlen = cnt * sizeof(struct sgl_page_pairs) + sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); if (reqlen > PAGE_SIZE) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0217 Block sgl registration required DMA " "size (%d) great than a page\n", reqlen); return -ENOMEM; } mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0283 Failed to allocate mbox cmd memory\n"); return -ENOMEM; } /* Allocate DMA memory and set up the non-embedded mailbox command */ alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, LPFC_SLI4_MBX_NEMBED); if (alloclen < reqlen) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2561 Allocated DMA memory size (%d) is " "less than the requested DMA memory " "size (%d)\n", alloclen, reqlen); lpfc_sli4_mbox_cmd_free(phba, mbox); return -ENOMEM; } /* Get the first SGE entry from the non-embedded DMA memory */ viraddr = mbox->sge_array->addr[0]; /* Set up the SGL pages in the non-embedded DMA pages */ sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; sgl_pg_pairs = &sgl->sgl_pg_pairs; pg_pairs = 0; list_for_each_entry(psb, sblist, list) { /* Set up the sge entry */ sgl_pg_pairs->sgl_pg0_addr_lo = cpu_to_le32(putPaddrLow(psb->dma_phys_bpl)); sgl_pg_pairs->sgl_pg0_addr_hi = cpu_to_le32(putPaddrHigh(psb->dma_phys_bpl)); if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) pdma_phys_bpl1 = psb->dma_phys_bpl + SGL_PAGE_SIZE; else pdma_phys_bpl1 = 0; sgl_pg_pairs->sgl_pg1_addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_bpl1)); sgl_pg_pairs->sgl_pg1_addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_bpl1)); /* Keep the first xritag on the list */ if (pg_pairs == 0) xritag_start = psb->cur_iocbq.sli4_xritag; sgl_pg_pairs++; pg_pairs++; } bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs); /* Perform endian conversion if necessary */ sgl->word0 = cpu_to_le32(sgl->word0); if (!phba->sli4_hba.intr_enable) rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); else { mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG); rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); } shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (rc != MBX_TIMEOUT) lpfc_sli4_mbox_cmd_free(phba, mbox); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2564 POST_SGL_BLOCK mailbox command failed " "status x%x add_status x%x mbx status x%x\n", shdr_status, shdr_add_status, rc); rc = -ENXIO; } return rc; } /** * lpfc_fc_frame_check - Check that this frame is a valid frame to handle * @phba: pointer to lpfc_hba struct that the frame was received on * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) * * This function checks the fields in the @fc_hdr to see if the FC frame is a * valid type of frame that the LPFC driver will handle. This function will * return a zero if the frame is a valid frame or a non zero value when the * frame does not pass the check. **/ static int lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr) { char *rctl_names[] = FC_RCTL_NAMES_INIT; char *type_names[] = FC_TYPE_NAMES_INIT; struct fc_vft_header *fc_vft_hdr; switch (fc_hdr->fh_r_ctl) { case FC_RCTL_DD_UNCAT: /* uncategorized information */ case FC_RCTL_DD_SOL_DATA: /* solicited data */ case FC_RCTL_DD_UNSOL_CTL: /* unsolicited control */ case FC_RCTL_DD_SOL_CTL: /* solicited control or reply */ case FC_RCTL_DD_UNSOL_DATA: /* unsolicited data */ case FC_RCTL_DD_DATA_DESC: /* data descriptor */ case FC_RCTL_DD_UNSOL_CMD: /* unsolicited command */ case FC_RCTL_DD_CMD_STATUS: /* command status */ case FC_RCTL_ELS_REQ: /* extended link services request */ case FC_RCTL_ELS_REP: /* extended link services reply */ case FC_RCTL_ELS4_REQ: /* FC-4 ELS request */ case FC_RCTL_ELS4_REP: /* FC-4 ELS reply */ case FC_RCTL_BA_NOP: /* basic link service NOP */ case FC_RCTL_BA_ABTS: /* basic link service abort */ case FC_RCTL_BA_RMC: /* remove connection */ case FC_RCTL_BA_ACC: /* basic accept */ case FC_RCTL_BA_RJT: /* basic reject */ case FC_RCTL_BA_PRMT: case FC_RCTL_ACK_1: /* acknowledge_1 */ case FC_RCTL_ACK_0: /* acknowledge_0 */ case FC_RCTL_P_RJT: /* port reject */ case FC_RCTL_F_RJT: /* fabric reject */ case FC_RCTL_P_BSY: /* port busy */ case FC_RCTL_F_BSY: /* fabric busy to data frame */ case FC_RCTL_F_BSYL: /* fabric busy to link control frame */ case FC_RCTL_LCR: /* link credit reset */ case FC_RCTL_END: /* end */ break; case FC_RCTL_VFTH: /* Virtual Fabric tagging Header */ fc_vft_hdr = (struct fc_vft_header *)fc_hdr; fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1]; return lpfc_fc_frame_check(phba, fc_hdr); default: goto drop; } switch (fc_hdr->fh_type) { case FC_TYPE_BLS: case FC_TYPE_ELS: case FC_TYPE_FCP: case FC_TYPE_CT: break; case FC_TYPE_IP: case FC_TYPE_ILS: default: goto drop; } lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "2538 Received frame rctl:%s type:%s\n", rctl_names[fc_hdr->fh_r_ctl], type_names[fc_hdr->fh_type]); return 0; drop: lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, "2539 Dropped frame rctl:%s type:%s\n", rctl_names[fc_hdr->fh_r_ctl], type_names[fc_hdr->fh_type]); return 1; } /** * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) * * This function processes the FC header to retrieve the VFI from the VF * header, if one exists. This function will return the VFI if one exists * or 0 if no VSAN Header exists. **/ static uint32_t lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr) { struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr; if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH) return 0; return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr); } /** * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to * @phba: Pointer to the HBA structure to search for the vport on * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) * @fcfi: The FC Fabric ID that the frame came from * * This function searches the @phba for a vport that matches the content of the * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function * returns the matching vport pointer or NULL if unable to match frame to a * vport. **/ static struct lpfc_vport * lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr, uint16_t fcfi) { struct lpfc_vport **vports; struct lpfc_vport *vport = NULL; int i; uint32_t did = (fc_hdr->fh_d_id[0] << 16 | fc_hdr->fh_d_id[1] << 8 | fc_hdr->fh_d_id[2]); vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { if (phba->fcf.fcfi == fcfi && vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) && vports[i]->fc_myDID == did) { vport = vports[i]; break; } } lpfc_destroy_vport_work_array(phba, vports); return vport; } /** * lpfc_update_rcv_time_stamp - Update vport's rcv seq time stamp * @vport: The vport to work on. * * This function updates the receive sequence time stamp for this vport. The * receive sequence time stamp indicates the time that the last frame of the * the sequence that has been idle for the longest amount of time was received. * the driver uses this time stamp to indicate if any received sequences have * timed out. **/ void lpfc_update_rcv_time_stamp(struct lpfc_vport *vport) { struct lpfc_dmabuf *h_buf; struct hbq_dmabuf *dmabuf = NULL; /* get the oldest sequence on the rcv list */ h_buf = list_get_first(&vport->rcv_buffer_list, struct lpfc_dmabuf, list); if (!h_buf) return; dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); vport->rcv_buffer_time_stamp = dmabuf->time_stamp; } /** * lpfc_cleanup_rcv_buffers - Cleans up all outstanding receive sequences. * @vport: The vport that the received sequences were sent to. * * This function cleans up all outstanding received sequences. This is called * by the driver when a link event or user action invalidates all the received * sequences. **/ void lpfc_cleanup_rcv_buffers(struct lpfc_vport *vport) { struct lpfc_dmabuf *h_buf, *hnext; struct lpfc_dmabuf *d_buf, *dnext; struct hbq_dmabuf *dmabuf = NULL; /* start with the oldest sequence on the rcv list */ list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) { dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); list_del_init(&dmabuf->hbuf.list); list_for_each_entry_safe(d_buf, dnext, &dmabuf->dbuf.list, list) { list_del_init(&d_buf->list); lpfc_in_buf_free(vport->phba, d_buf); } lpfc_in_buf_free(vport->phba, &dmabuf->dbuf); } } /** * lpfc_rcv_seq_check_edtov - Cleans up timed out receive sequences. * @vport: The vport that the received sequences were sent to. * * This function determines whether any received sequences have timed out by * first checking the vport's rcv_buffer_time_stamp. If this time_stamp * indicates that there is at least one timed out sequence this routine will * go through the received sequences one at a time from most inactive to most * active to determine which ones need to be cleaned up. Once it has determined * that a sequence needs to be cleaned up it will simply free up the resources * without sending an abort. **/ void lpfc_rcv_seq_check_edtov(struct lpfc_vport *vport) { struct lpfc_dmabuf *h_buf, *hnext; struct lpfc_dmabuf *d_buf, *dnext; struct hbq_dmabuf *dmabuf = NULL; unsigned long timeout; int abort_count = 0; timeout = (msecs_to_jiffies(vport->phba->fc_edtov) + vport->rcv_buffer_time_stamp); if (list_empty(&vport->rcv_buffer_list) || time_before(jiffies, timeout)) return; /* start with the oldest sequence on the rcv list */ list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) { dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); timeout = (msecs_to_jiffies(vport->phba->fc_edtov) + dmabuf->time_stamp); if (time_before(jiffies, timeout)) break; abort_count++; list_del_init(&dmabuf->hbuf.list); list_for_each_entry_safe(d_buf, dnext, &dmabuf->dbuf.list, list) { list_del_init(&d_buf->list); lpfc_in_buf_free(vport->phba, d_buf); } lpfc_in_buf_free(vport->phba, &dmabuf->dbuf); } if (abort_count) lpfc_update_rcv_time_stamp(vport); } /** * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame * * This function searches through the existing incomplete sequences that have * been sent to this @vport. If the frame matches one of the incomplete * sequences then the dbuf in the @dmabuf is added to the list of frames that * make up that sequence. If no sequence is found that matches this frame then * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list * This function returns a pointer to the first dmabuf in the sequence list that * the frame was linked to. **/ static struct hbq_dmabuf * lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf) { struct fc_frame_header *new_hdr; struct fc_frame_header *temp_hdr; struct lpfc_dmabuf *d_buf; struct lpfc_dmabuf *h_buf; struct hbq_dmabuf *seq_dmabuf = NULL; struct hbq_dmabuf *temp_dmabuf = NULL; INIT_LIST_HEAD(&dmabuf->dbuf.list); dmabuf->time_stamp = jiffies; new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; /* Use the hdr_buf to find the sequence that this frame belongs to */ list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) { temp_hdr = (struct fc_frame_header *)h_buf->virt; if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) || (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) || (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3))) continue; /* found a pending sequence that matches this frame */ seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); break; } if (!seq_dmabuf) { /* * This indicates first frame received for this sequence. * Queue the buffer on the vport's rcv_buffer_list. */ list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list); lpfc_update_rcv_time_stamp(vport); return dmabuf; } temp_hdr = seq_dmabuf->hbuf.virt; if (be16_to_cpu(new_hdr->fh_seq_cnt) < be16_to_cpu(temp_hdr->fh_seq_cnt)) { list_del_init(&seq_dmabuf->hbuf.list); list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list); list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list); lpfc_update_rcv_time_stamp(vport); return dmabuf; } /* move this sequence to the tail to indicate a young sequence */ list_move_tail(&seq_dmabuf->hbuf.list, &vport->rcv_buffer_list); seq_dmabuf->time_stamp = jiffies; lpfc_update_rcv_time_stamp(vport); if (list_empty(&seq_dmabuf->dbuf.list)) { temp_hdr = dmabuf->hbuf.virt; list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list); return seq_dmabuf; } /* find the correct place in the sequence to insert this frame */ list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) { temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf); temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt; /* * If the frame's sequence count is greater than the frame on * the list then insert the frame right after this frame */ if (be16_to_cpu(new_hdr->fh_seq_cnt) > be16_to_cpu(temp_hdr->fh_seq_cnt)) { list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list); return seq_dmabuf; } } return NULL; } /** * lpfc_sli4_abort_partial_seq - Abort partially assembled unsol sequence * @vport: pointer to a vitural port * @dmabuf: pointer to a dmabuf that describes the FC sequence * * This function tries to abort from the partially assembed sequence, described * by the information from basic abbort @dmabuf. It checks to see whether such * partially assembled sequence held by the driver. If so, it shall free up all * the frames from the partially assembled sequence. * * Return * true -- if there is matching partially assembled sequence present and all * the frames freed with the sequence; * false -- if there is no matching partially assembled sequence present so * nothing got aborted in the lower layer driver **/ static bool lpfc_sli4_abort_partial_seq(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf) { struct fc_frame_header *new_hdr; struct fc_frame_header *temp_hdr; struct lpfc_dmabuf *d_buf, *n_buf, *h_buf; struct hbq_dmabuf *seq_dmabuf = NULL; /* Use the hdr_buf to find the sequence that matches this frame */ INIT_LIST_HEAD(&dmabuf->dbuf.list); INIT_LIST_HEAD(&dmabuf->hbuf.list); new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) { temp_hdr = (struct fc_frame_header *)h_buf->virt; if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) || (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) || (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3))) continue; /* found a pending sequence that matches this frame */ seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); break; } /* Free up all the frames from the partially assembled sequence */ if (seq_dmabuf) { list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) { list_del_init(&d_buf->list); lpfc_in_buf_free(vport->phba, d_buf); } return true; } return false; } /** * lpfc_sli4_seq_abort_acc_cmpl - Accept seq abort iocb complete handler * @phba: Pointer to HBA context object. * @cmd_iocbq: pointer to the command iocbq structure. * @rsp_iocbq: pointer to the response iocbq structure. * * This function handles the sequence abort accept iocb command complete * event. It properly releases the memory allocated to the sequence abort * accept iocb. **/ static void lpfc_sli4_seq_abort_acc_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmd_iocbq, struct lpfc_iocbq *rsp_iocbq) { if (cmd_iocbq) lpfc_sli_release_iocbq(phba, cmd_iocbq); } /** * lpfc_sli4_seq_abort_acc - Accept sequence abort * @phba: Pointer to HBA context object. * @fc_hdr: pointer to a FC frame header. * * This function sends a basic accept to a previous unsol sequence abort * event after aborting the sequence handling. **/ static void lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr) { struct lpfc_iocbq *ctiocb = NULL; struct lpfc_nodelist *ndlp; uint16_t oxid, rxid; uint32_t sid, fctl; IOCB_t *icmd; if (!lpfc_is_link_up(phba)) return; sid = sli4_sid_from_fc_hdr(fc_hdr); oxid = be16_to_cpu(fc_hdr->fh_ox_id); rxid = be16_to_cpu(fc_hdr->fh_rx_id); ndlp = lpfc_findnode_did(phba->pport, sid); if (!ndlp) { lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, "1268 Find ndlp returned NULL for oxid:x%x " "SID:x%x\n", oxid, sid); return; } /* Allocate buffer for acc iocb */ ctiocb = lpfc_sli_get_iocbq(phba); if (!ctiocb) return; /* Extract the F_CTL field from FC_HDR */ fctl = sli4_fctl_from_fc_hdr(fc_hdr); icmd = &ctiocb->iocb; icmd->un.xseq64.bdl.bdeSize = 0; icmd->un.xseq64.bdl.ulpIoTag32 = 0; icmd->un.xseq64.w5.hcsw.Dfctl = 0; icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_ACC; icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_BLS; /* Fill in the rest of iocb fields */ icmd->ulpCommand = CMD_XMIT_BLS_RSP64_CX; icmd->ulpBdeCount = 0; icmd->ulpLe = 1; icmd->ulpClass = CLASS3; icmd->ulpContext = ndlp->nlp_rpi; ctiocb->iocb_cmpl = NULL; ctiocb->vport = phba->pport; ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_acc_cmpl; if (fctl & FC_FC_EX_CTX) { /* ABTS sent by responder to CT exchange, construction * of BA_ACC will use OX_ID from ABTS for the XRI_TAG * field and RX_ID from ABTS for RX_ID field. */ bf_set(lpfc_abts_orig, &icmd->un.bls_acc, LPFC_ABTS_UNSOL_RSP); bf_set(lpfc_abts_rxid, &icmd->un.bls_acc, rxid); ctiocb->sli4_xritag = oxid; } else { /* ABTS sent by initiator to CT exchange, construction * of BA_ACC will need to allocate a new XRI as for the * XRI_TAG and RX_ID fields. */ bf_set(lpfc_abts_orig, &icmd->un.bls_acc, LPFC_ABTS_UNSOL_INT); bf_set(lpfc_abts_rxid, &icmd->un.bls_acc, NO_XRI); ctiocb->sli4_xritag = NO_XRI; } bf_set(lpfc_abts_oxid, &icmd->un.bls_acc, oxid); /* Xmit CT abts accept on exchange */ lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "1200 Xmit CT ABTS ACC on exchange x%x Data: x%x\n", CMD_XMIT_BLS_RSP64_CX, phba->link_state); lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0); } /** * lpfc_sli4_handle_unsol_abort - Handle sli-4 unsolicited abort event * @vport: Pointer to the vport on which this sequence was received * @dmabuf: pointer to a dmabuf that describes the FC sequence * * This function handles an SLI-4 unsolicited abort event. If the unsolicited * receive sequence is only partially assembed by the driver, it shall abort * the partially assembled frames for the sequence. Otherwise, if the * unsolicited receive sequence has been completely assembled and passed to * the Upper Layer Protocol (UPL), it then mark the per oxid status for the * unsolicited sequence has been aborted. After that, it will issue a basic * accept to accept the abort. **/ void lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf) { struct lpfc_hba *phba = vport->phba; struct fc_frame_header fc_hdr; uint32_t fctl; bool abts_par; /* Make a copy of fc_hdr before the dmabuf being released */ memcpy(&fc_hdr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header)); fctl = sli4_fctl_from_fc_hdr(&fc_hdr); if (fctl & FC_FC_EX_CTX) { /* * ABTS sent by responder to exchange, just free the buffer */ lpfc_in_buf_free(phba, &dmabuf->dbuf); } else { /* * ABTS sent by initiator to exchange, need to do cleanup */ /* Try to abort partially assembled seq */ abts_par = lpfc_sli4_abort_partial_seq(vport, dmabuf); /* Send abort to ULP if partially seq abort failed */ if (abts_par == false) lpfc_sli4_send_seq_to_ulp(vport, dmabuf); else lpfc_in_buf_free(phba, &dmabuf->dbuf); } /* Send basic accept (BA_ACC) to the abort requester */ lpfc_sli4_seq_abort_acc(phba, &fc_hdr); } /** * lpfc_seq_complete - Indicates if a sequence is complete * @dmabuf: pointer to a dmabuf that describes the FC sequence * * This function checks the sequence, starting with the frame described by * @dmabuf, to see if all the frames associated with this sequence are present. * the frames associated with this sequence are linked to the @dmabuf using the * dbuf list. This function looks for two major things. 1) That the first frame * has a sequence count of zero. 2) There is a frame with last frame of sequence * set. 3) That there are no holes in the sequence count. The function will * return 1 when the sequence is complete, otherwise it will return 0. **/ static int lpfc_seq_complete(struct hbq_dmabuf *dmabuf) { struct fc_frame_header *hdr; struct lpfc_dmabuf *d_buf; struct hbq_dmabuf *seq_dmabuf; uint32_t fctl; int seq_count = 0; hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; /* make sure first fame of sequence has a sequence count of zero */ if (hdr->fh_seq_cnt != seq_count) return 0; fctl = (hdr->fh_f_ctl[0] << 16 | hdr->fh_f_ctl[1] << 8 | hdr->fh_f_ctl[2]); /* If last frame of sequence we can return success. */ if (fctl & FC_FC_END_SEQ) return 1; list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) { seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf); hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; /* If there is a hole in the sequence count then fail. */ if (++seq_count != be16_to_cpu(hdr->fh_seq_cnt)) return 0; fctl = (hdr->fh_f_ctl[0] << 16 | hdr->fh_f_ctl[1] << 8 | hdr->fh_f_ctl[2]); /* If last frame of sequence we can return success. */ if (fctl & FC_FC_END_SEQ) return 1; } return 0; } /** * lpfc_prep_seq - Prep sequence for ULP processing * @vport: Pointer to the vport on which this sequence was received * @dmabuf: pointer to a dmabuf that describes the FC sequence * * This function takes a sequence, described by a list of frames, and creates * a list of iocbq structures to describe the sequence. This iocbq list will be * used to issue to the generic unsolicited sequence handler. This routine * returns a pointer to the first iocbq in the list. If the function is unable * to allocate an iocbq then it throw out the received frames that were not * able to be described and return a pointer to the first iocbq. If unable to * allocate any iocbqs (including the first) this function will return NULL. **/ static struct lpfc_iocbq * lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) { struct lpfc_dmabuf *d_buf, *n_buf; struct lpfc_iocbq *first_iocbq, *iocbq; struct fc_frame_header *fc_hdr; uint32_t sid; struct ulp_bde64 *pbde; fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; /* remove from receive buffer list */ list_del_init(&seq_dmabuf->hbuf.list); lpfc_update_rcv_time_stamp(vport); /* get the Remote Port's SID */ sid = sli4_sid_from_fc_hdr(fc_hdr); /* Get an iocbq struct to fill in. */ first_iocbq = lpfc_sli_get_iocbq(vport->phba); if (first_iocbq) { /* Initialize the first IOCB. */ first_iocbq->iocb.unsli3.rcvsli3.acc_len = 0; first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS; first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX; first_iocbq->iocb.ulpContext = be16_to_cpu(fc_hdr->fh_ox_id); first_iocbq->iocb.unsli3.rcvsli3.vpi = vport->vpi + vport->phba->vpi_base; /* put the first buffer into the first IOCBq */ first_iocbq->context2 = &seq_dmabuf->dbuf; first_iocbq->context3 = NULL; first_iocbq->iocb.ulpBdeCount = 1; first_iocbq->iocb.un.cont64[0].tus.f.bdeSize = LPFC_DATA_BUF_SIZE; first_iocbq->iocb.un.rcvels.remoteID = sid; first_iocbq->iocb.unsli3.rcvsli3.acc_len += bf_get(lpfc_rcqe_length, &seq_dmabuf->cq_event.cqe.rcqe_cmpl); } iocbq = first_iocbq; /* * Each IOCBq can have two Buffers assigned, so go through the list * of buffers for this sequence and save two buffers in each IOCBq */ list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) { if (!iocbq) { lpfc_in_buf_free(vport->phba, d_buf); continue; } if (!iocbq->context3) { iocbq->context3 = d_buf; iocbq->iocb.ulpBdeCount++; pbde = (struct ulp_bde64 *) &iocbq->iocb.unsli3.sli3Words[4]; pbde->tus.f.bdeSize = LPFC_DATA_BUF_SIZE; first_iocbq->iocb.unsli3.rcvsli3.acc_len += bf_get(lpfc_rcqe_length, &seq_dmabuf->cq_event.cqe.rcqe_cmpl); } else { iocbq = lpfc_sli_get_iocbq(vport->phba); if (!iocbq) { if (first_iocbq) { first_iocbq->iocb.ulpStatus = IOSTAT_FCP_RSP_ERROR; first_iocbq->iocb.un.ulpWord[4] = IOERR_NO_RESOURCES; } lpfc_in_buf_free(vport->phba, d_buf); continue; } iocbq->context2 = d_buf; iocbq->context3 = NULL; iocbq->iocb.ulpBdeCount = 1; iocbq->iocb.un.cont64[0].tus.f.bdeSize = LPFC_DATA_BUF_SIZE; first_iocbq->iocb.unsli3.rcvsli3.acc_len += bf_get(lpfc_rcqe_length, &seq_dmabuf->cq_event.cqe.rcqe_cmpl); iocbq->iocb.un.rcvels.remoteID = sid; list_add_tail(&iocbq->list, &first_iocbq->list); } } return first_iocbq; } static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) { struct fc_frame_header *fc_hdr; struct lpfc_iocbq *iocbq, *curr_iocb, *next_iocb; struct lpfc_hba *phba = vport->phba; fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; iocbq = lpfc_prep_seq(vport, seq_dmabuf); if (!iocbq) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2707 Ring %d handler: Failed to allocate " "iocb Rctl x%x Type x%x received\n", LPFC_ELS_RING, fc_hdr->fh_r_ctl, fc_hdr->fh_type); return; } if (!lpfc_complete_unsol_iocb(phba, &phba->sli.ring[LPFC_ELS_RING], iocbq, fc_hdr->fh_r_ctl, fc_hdr->fh_type)) lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, "2540 Ring %d handler: unexpected Rctl " "x%x Type x%x received\n", LPFC_ELS_RING, fc_hdr->fh_r_ctl, fc_hdr->fh_type); /* Free iocb created in lpfc_prep_seq */ list_for_each_entry_safe(curr_iocb, next_iocb, &iocbq->list, list) { list_del_init(&curr_iocb->list); lpfc_sli_release_iocbq(phba, curr_iocb); } lpfc_sli_release_iocbq(phba, iocbq); } /** * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware * @phba: Pointer to HBA context object. * * This function is called with no lock held. This function processes all * the received buffers and gives it to upper layers when a received buffer * indicates that it is the final frame in the sequence. The interrupt * service routine processes received buffers at interrupt contexts and adds * received dma buffers to the rb_pend_list queue and signals the worker thread. * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the * appropriate receive function when the final frame in a sequence is received. **/ void lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba, struct hbq_dmabuf *dmabuf) { struct hbq_dmabuf *seq_dmabuf; struct fc_frame_header *fc_hdr; struct lpfc_vport *vport; uint32_t fcfi; /* Process each received buffer */ fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; /* check to see if this a valid type of frame */ if (lpfc_fc_frame_check(phba, fc_hdr)) { lpfc_in_buf_free(phba, &dmabuf->dbuf); return; } fcfi = bf_get(lpfc_rcqe_fcf_id, &dmabuf->cq_event.cqe.rcqe_cmpl); vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi); if (!vport || !(vport->vpi_state & LPFC_VPI_REGISTERED)) { /* throw out the frame */ lpfc_in_buf_free(phba, &dmabuf->dbuf); return; } /* Handle the basic abort sequence (BA_ABTS) event */ if (fc_hdr->fh_r_ctl == FC_RCTL_BA_ABTS) { lpfc_sli4_handle_unsol_abort(vport, dmabuf); return; } /* Link this frame */ seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf); if (!seq_dmabuf) { /* unable to add frame to vport - throw it out */ lpfc_in_buf_free(phba, &dmabuf->dbuf); return; } /* If not last frame in sequence continue processing frames. */ if (!lpfc_seq_complete(seq_dmabuf)) return; /* Send the complete sequence to the upper layer protocol */ lpfc_sli4_send_seq_to_ulp(vport, seq_dmabuf); } /** * lpfc_sli4_post_all_rpi_hdrs - Post the rpi header memory region to the port * @phba: pointer to lpfc hba data structure. * * This routine is invoked to post rpi header templates to the * HBA consistent with the SLI-4 interface spec. This routine * posts a PAGE_SIZE memory region to the port to hold up to * PAGE_SIZE modulo 64 rpi context headers. * * This routine does not require any locks. It's usage is expected * to be driver load or reset recovery when the driver is * sequential. * * Return codes * 0 - successful * EIO - The mailbox failed to complete successfully. * When this error occurs, the driver is not guaranteed * to have any rpi regions posted to the device and * must either attempt to repost the regions or take a * fatal error. **/ int lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *phba) { struct lpfc_rpi_hdr *rpi_page; uint32_t rc = 0; /* Post all rpi memory regions to the port. */ list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) { rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2008 Error %d posting all rpi " "headers\n", rc); rc = -EIO; break; } } return rc; } /** * lpfc_sli4_post_rpi_hdr - Post an rpi header memory region to the port * @phba: pointer to lpfc hba data structure. * @rpi_page: pointer to the rpi memory region. * * This routine is invoked to post a single rpi header to the * HBA consistent with the SLI-4 interface spec. This memory region * maps up to 64 rpi context regions. * * Return codes * 0 - successful * ENOMEM - No available memory * EIO - The mailbox failed to complete successfully. **/ int lpfc_sli4_post_rpi_hdr(struct lpfc_hba *phba, struct lpfc_rpi_hdr *rpi_page) { LPFC_MBOXQ_t *mboxq; struct lpfc_mbx_post_hdr_tmpl *hdr_tmpl; uint32_t rc = 0; uint32_t mbox_tmo; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; /* The port is notified of the header region via a mailbox command. */ mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2001 Unable to allocate memory for issuing " "SLI_CONFIG_SPECIAL mailbox command\n"); return -ENOMEM; } /* Post all rpi memory regions to the port. */ hdr_tmpl = &mboxq->u.mqe.un.hdr_tmpl; mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG); lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_POST_HDR_TEMPLATE, sizeof(struct lpfc_mbx_post_hdr_tmpl) - sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED); bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt, hdr_tmpl, rpi_page->page_count); bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl, rpi_page->start_rpi); hdr_tmpl->rpi_paddr_lo = putPaddrLow(rpi_page->dmabuf->phys); hdr_tmpl->rpi_paddr_hi = putPaddrHigh(rpi_page->dmabuf->phys); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &hdr_tmpl->header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (rc != MBX_TIMEOUT) mempool_free(mboxq, phba->mbox_mem_pool); if (shdr_status || shdr_add_status || rc) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2514 POST_RPI_HDR mailbox failed with " "status x%x add_status x%x, mbx status x%x\n", shdr_status, shdr_add_status, rc); rc = -ENXIO; } return rc; } /** * lpfc_sli4_alloc_rpi - Get an available rpi in the device's range * @phba: pointer to lpfc hba data structure. * * This routine is invoked to post rpi header templates to the * HBA consistent with the SLI-4 interface spec. This routine * posts a PAGE_SIZE memory region to the port to hold up to * PAGE_SIZE modulo 64 rpi context headers. * * Returns * A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful * LPFC_RPI_ALLOC_ERROR if no rpis are available. **/ int lpfc_sli4_alloc_rpi(struct lpfc_hba *phba) { int rpi; uint16_t max_rpi, rpi_base, rpi_limit; uint16_t rpi_remaining; struct lpfc_rpi_hdr *rpi_hdr; max_rpi = phba->sli4_hba.max_cfg_param.max_rpi; rpi_base = phba->sli4_hba.max_cfg_param.rpi_base; rpi_limit = phba->sli4_hba.next_rpi; /* * The valid rpi range is not guaranteed to be zero-based. Start * the search at the rpi_base as reported by the port. */ spin_lock_irq(&phba->hbalock); rpi = find_next_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit, rpi_base); if (rpi >= rpi_limit || rpi < rpi_base) rpi = LPFC_RPI_ALLOC_ERROR; else { set_bit(rpi, phba->sli4_hba.rpi_bmask); phba->sli4_hba.max_cfg_param.rpi_used++; phba->sli4_hba.rpi_count++; } /* * Don't try to allocate more rpi header regions if the device limit * on available rpis max has been exhausted. */ if ((rpi == LPFC_RPI_ALLOC_ERROR) && (phba->sli4_hba.rpi_count >= max_rpi)) { spin_unlock_irq(&phba->hbalock); return rpi; } /* * If the driver is running low on rpi resources, allocate another * page now. Note that the next_rpi value is used because * it represents how many are actually in use whereas max_rpi notes * how many are supported max by the device. */ rpi_remaining = phba->sli4_hba.next_rpi - rpi_base - phba->sli4_hba.rpi_count; spin_unlock_irq(&phba->hbalock); if (rpi_remaining < LPFC_RPI_LOW_WATER_MARK) { rpi_hdr = lpfc_sli4_create_rpi_hdr(phba); if (!rpi_hdr) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2002 Error Could not grow rpi " "count\n"); } else { lpfc_sli4_post_rpi_hdr(phba, rpi_hdr); } } return rpi; } /** * lpfc_sli4_free_rpi - Release an rpi for reuse. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to release an rpi to the pool of * available rpis maintained by the driver. **/ void lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) { spin_lock_irq(&phba->hbalock); clear_bit(rpi, phba->sli4_hba.rpi_bmask); phba->sli4_hba.rpi_count--; phba->sli4_hba.max_cfg_param.rpi_used--; spin_unlock_irq(&phba->hbalock); } /** * lpfc_sli4_remove_rpis - Remove the rpi bitmask region * @phba: pointer to lpfc hba data structure. * * This routine is invoked to remove the memory region that * provided rpi via a bitmask. **/ void lpfc_sli4_remove_rpis(struct lpfc_hba *phba) { kfree(phba->sli4_hba.rpi_bmask); } /** * lpfc_sli4_resume_rpi - Remove the rpi bitmask region * @phba: pointer to lpfc hba data structure. * * This routine is invoked to remove the memory region that * provided rpi via a bitmask. **/ int lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp) { LPFC_MBOXQ_t *mboxq; struct lpfc_hba *phba = ndlp->phba; int rc; /* The port is notified of the header region via a mailbox command. */ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) return -ENOMEM; /* Post all rpi memory regions to the port. */ lpfc_resume_rpi(mboxq, ndlp); rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2010 Resume RPI Mailbox failed " "status %d, mbxStatus x%x\n", rc, bf_get(lpfc_mqe_status, &mboxq->u.mqe)); mempool_free(mboxq, phba->mbox_mem_pool); return -EIO; } return 0; } /** * lpfc_sli4_init_vpi - Initialize a vpi with the port * @phba: pointer to lpfc hba data structure. * @vpi: vpi value to activate with the port. * * This routine is invoked to activate a vpi with the * port when the host intends to use vports with a * nonzero vpi. * * Returns: * 0 success * -Evalue otherwise **/ int lpfc_sli4_init_vpi(struct lpfc_hba *phba, uint16_t vpi) { LPFC_MBOXQ_t *mboxq; int rc = 0; int retval = MBX_SUCCESS; uint32_t mbox_tmo; if (vpi == 0) return -EINVAL; mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) return -ENOMEM; lpfc_init_vpi(phba, mboxq, vpi); mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_INIT_VPI); rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2022 INIT VPI Mailbox failed " "status %d, mbxStatus x%x\n", rc, bf_get(lpfc_mqe_status, &mboxq->u.mqe)); retval = -EIO; } if (rc != MBX_TIMEOUT) mempool_free(mboxq, phba->mbox_mem_pool); return retval; } /** * lpfc_mbx_cmpl_add_fcf_record - add fcf mbox completion handler. * @phba: pointer to lpfc hba data structure. * @mboxq: Pointer to mailbox object. * * This routine is invoked to manually add a single FCF record. The caller * must pass a completely initialized FCF_Record. This routine takes * care of the nonembedded mailbox operations. **/ static void lpfc_mbx_cmpl_add_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) { void *virt_addr; union lpfc_sli4_cfg_shdr *shdr; uint32_t shdr_status, shdr_add_status; virt_addr = mboxq->sge_array->addr[0]; /* The IOCTL status is embedded in the mailbox subheader. */ shdr = (union lpfc_sli4_cfg_shdr *) virt_addr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if ((shdr_status || shdr_add_status) && (shdr_status != STATUS_FCF_IN_USE)) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2558 ADD_FCF_RECORD mailbox failed with " "status x%x add_status x%x\n", shdr_status, shdr_add_status); lpfc_sli4_mbox_cmd_free(phba, mboxq); } /** * lpfc_sli4_add_fcf_record - Manually add an FCF Record. * @phba: pointer to lpfc hba data structure. * @fcf_record: pointer to the initialized fcf record to add. * * This routine is invoked to manually add a single FCF record. The caller * must pass a completely initialized FCF_Record. This routine takes * care of the nonembedded mailbox operations. **/ int lpfc_sli4_add_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record) { int rc = 0; LPFC_MBOXQ_t *mboxq; uint8_t *bytep; void *virt_addr; dma_addr_t phys_addr; struct lpfc_mbx_sge sge; uint32_t alloc_len, req_len; uint32_t fcfindex; mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2009 Failed to allocate mbox for ADD_FCF cmd\n"); return -ENOMEM; } req_len = sizeof(struct fcf_record) + sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); /* Allocate DMA memory and set up the non-embedded mailbox command */ alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_ADD_FCF, req_len, LPFC_SLI4_MBX_NEMBED); if (alloc_len < req_len) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2523 Allocated DMA memory size (x%x) is " "less than the requested DMA memory " "size (x%x)\n", alloc_len, req_len); lpfc_sli4_mbox_cmd_free(phba, mboxq); return -ENOMEM; } /* * Get the first SGE entry from the non-embedded DMA memory. This * routine only uses a single SGE. */ lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); virt_addr = mboxq->sge_array->addr[0]; /* * Configure the FCF record for FCFI 0. This is the driver's * hardcoded default and gets used in nonFIP mode. */ fcfindex = bf_get(lpfc_fcf_record_fcf_index, fcf_record); bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr); lpfc_sli_pcimem_bcopy(&fcfindex, bytep, sizeof(uint32_t)); /* * Copy the fcf_index and the FCF Record Data. The data starts after * the FCoE header plus word10. The data copy needs to be endian * correct. */ bytep += sizeof(uint32_t); lpfc_sli_pcimem_bcopy(fcf_record, bytep, sizeof(struct fcf_record)); mboxq->vport = phba->pport; mboxq->mbox_cmpl = lpfc_mbx_cmpl_add_fcf_record; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2515 ADD_FCF_RECORD mailbox failed with " "status 0x%x\n", rc); lpfc_sli4_mbox_cmd_free(phba, mboxq); rc = -EIO; } else rc = 0; return rc; } /** * lpfc_sli4_build_dflt_fcf_record - Build the driver's default FCF Record. * @phba: pointer to lpfc hba data structure. * @fcf_record: pointer to the fcf record to write the default data. * @fcf_index: FCF table entry index. * * This routine is invoked to build the driver's default FCF record. The * values used are hardcoded. This routine handles memory initialization. * **/ void lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record, uint16_t fcf_index) { memset(fcf_record, 0, sizeof(struct fcf_record)); fcf_record->max_rcv_size = LPFC_FCOE_MAX_RCV_SIZE; fcf_record->fka_adv_period = LPFC_FCOE_FKA_ADV_PER; fcf_record->fip_priority = LPFC_FCOE_FIP_PRIORITY; bf_set(lpfc_fcf_record_mac_0, fcf_record, phba->fc_map[0]); bf_set(lpfc_fcf_record_mac_1, fcf_record, phba->fc_map[1]); bf_set(lpfc_fcf_record_mac_2, fcf_record, phba->fc_map[2]); bf_set(lpfc_fcf_record_mac_3, fcf_record, LPFC_FCOE_FCF_MAC3); bf_set(lpfc_fcf_record_mac_4, fcf_record, LPFC_FCOE_FCF_MAC4); bf_set(lpfc_fcf_record_mac_5, fcf_record, LPFC_FCOE_FCF_MAC5); bf_set(lpfc_fcf_record_fc_map_0, fcf_record, phba->fc_map[0]); bf_set(lpfc_fcf_record_fc_map_1, fcf_record, phba->fc_map[1]); bf_set(lpfc_fcf_record_fc_map_2, fcf_record, phba->fc_map[2]); bf_set(lpfc_fcf_record_fcf_valid, fcf_record, 1); bf_set(lpfc_fcf_record_fcf_avail, fcf_record, 1); bf_set(lpfc_fcf_record_fcf_index, fcf_record, fcf_index); bf_set(lpfc_fcf_record_mac_addr_prov, fcf_record, LPFC_FCF_FPMA | LPFC_FCF_SPMA); /* Set the VLAN bit map */ if (phba->valid_vlan) { fcf_record->vlan_bitmap[phba->vlan_id / 8] = 1 << (phba->vlan_id % 8); } } /** * lpfc_sli4_fcf_scan_read_fcf_rec - Read hba fcf record for fcf scan. * @phba: pointer to lpfc hba data structure. * @fcf_index: FCF table entry offset. * * This routine is invoked to scan the entire FCF table by reading FCF * record and processing it one at a time starting from the @fcf_index * for initial FCF discovery or fast FCF failover rediscovery. * * Return 0 if the mailbox command is submitted sucessfully, none 0 * otherwise. **/ int lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index) { int rc = 0, error; LPFC_MBOXQ_t *mboxq; phba->fcoe_eventtag_at_fcf_scan = phba->fcoe_eventtag; mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2000 Failed to allocate mbox for " "READ_FCF cmd\n"); error = -ENOMEM; goto fail_fcf_scan; } /* Construct the read FCF record mailbox command */ rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index); if (rc) { error = -EINVAL; goto fail_fcf_scan; } /* Issue the mailbox command asynchronously */ mboxq->vport = phba->pport; mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_scan_read_fcf_rec; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) error = -EIO; else { spin_lock_irq(&phba->hbalock); phba->hba_flag |= FCF_DISC_INPROGRESS; spin_unlock_irq(&phba->hbalock); /* Reset FCF round robin index bmask for new scan */ if (fcf_index == LPFC_FCOE_FCF_GET_FIRST) { memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); phba->fcf.eligible_fcf_cnt = 0; } error = 0; } fail_fcf_scan: if (error) { if (mboxq) lpfc_sli4_mbox_cmd_free(phba, mboxq); /* FCF scan failed, clear FCF_DISC_INPROGRESS flag */ spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~FCF_DISC_INPROGRESS; spin_unlock_irq(&phba->hbalock); } return error; } /** * lpfc_sli4_fcf_rr_read_fcf_rec - Read hba fcf record for round robin fcf. * @phba: pointer to lpfc hba data structure. * @fcf_index: FCF table entry offset. * * This routine is invoked to read an FCF record indicated by @fcf_index * and to use it for FLOGI round robin FCF failover. * * Return 0 if the mailbox command is submitted sucessfully, none 0 * otherwise. **/ int lpfc_sli4_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index) { int rc = 0, error; LPFC_MBOXQ_t *mboxq; mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT, "2763 Failed to allocate mbox for " "READ_FCF cmd\n"); error = -ENOMEM; goto fail_fcf_read; } /* Construct the read FCF record mailbox command */ rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index); if (rc) { error = -EINVAL; goto fail_fcf_read; } /* Issue the mailbox command asynchronously */ mboxq->vport = phba->pport; mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_rr_read_fcf_rec; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) error = -EIO; else error = 0; fail_fcf_read: if (error && mboxq) lpfc_sli4_mbox_cmd_free(phba, mboxq); return error; } /** * lpfc_sli4_read_fcf_rec - Read hba fcf record for update eligible fcf bmask. * @phba: pointer to lpfc hba data structure. * @fcf_index: FCF table entry offset. * * This routine is invoked to read an FCF record indicated by @fcf_index to * determine whether it's eligible for FLOGI round robin failover list. * * Return 0 if the mailbox command is submitted sucessfully, none 0 * otherwise. **/ int lpfc_sli4_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index) { int rc = 0, error; LPFC_MBOXQ_t *mboxq; mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT, "2758 Failed to allocate mbox for " "READ_FCF cmd\n"); error = -ENOMEM; goto fail_fcf_read; } /* Construct the read FCF record mailbox command */ rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index); if (rc) { error = -EINVAL; goto fail_fcf_read; } /* Issue the mailbox command asynchronously */ mboxq->vport = phba->pport; mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_rec; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) error = -EIO; else error = 0; fail_fcf_read: if (error && mboxq) lpfc_sli4_mbox_cmd_free(phba, mboxq); return error; } /** * lpfc_sli4_fcf_rr_next_index_get - Get next eligible fcf record index * @phba: pointer to lpfc hba data structure. * * This routine is to get the next eligible FCF record index in a round * robin fashion. If the next eligible FCF record index equals to the * initial round robin FCF record index, LPFC_FCOE_FCF_NEXT_NONE (0xFFFF) * shall be returned, otherwise, the next eligible FCF record's index * shall be returned. **/ uint16_t lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba) { uint16_t next_fcf_index; /* Search from the currently registered FCF index */ next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask, LPFC_SLI4_FCF_TBL_INDX_MAX, phba->fcf.current_rec.fcf_indx); /* Wrap around condition on phba->fcf.fcf_rr_bmask */ if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask, LPFC_SLI4_FCF_TBL_INDX_MAX, 0); /* Round robin failover stop condition */ if (next_fcf_index == phba->fcf.fcf_rr_init_indx) return LPFC_FCOE_FCF_NEXT_NONE; return next_fcf_index; } /** * lpfc_sli4_fcf_rr_index_set - Set bmask with eligible fcf record index * @phba: pointer to lpfc hba data structure. * * This routine sets the FCF record index in to the eligible bmask for * round robin failover search. It checks to make sure that the index * does not go beyond the range of the driver allocated bmask dimension * before setting the bit. * * Returns 0 if the index bit successfully set, otherwise, it returns * -EINVAL. **/ int lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *phba, uint16_t fcf_index) { if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP, "2610 HBA FCF index reached driver's " "book keeping dimension: fcf_index:%d, " "driver_bmask_max:%d\n", fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX); return -EINVAL; } /* Set the eligible FCF record index bmask */ set_bit(fcf_index, phba->fcf.fcf_rr_bmask); return 0; } /** * lpfc_sli4_fcf_rr_index_set - Clear bmask from eligible fcf record index * @phba: pointer to lpfc hba data structure. * * This routine clears the FCF record index from the eligible bmask for * round robin failover search. It checks to make sure that the index * does not go beyond the range of the driver allocated bmask dimension * before clearing the bit. **/ void lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *phba, uint16_t fcf_index) { if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP, "2762 HBA FCF index goes beyond driver's " "book keeping dimension: fcf_index:%d, " "driver_bmask_max:%d\n", fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX); return; } /* Clear the eligible FCF record index bmask */ clear_bit(fcf_index, phba->fcf.fcf_rr_bmask); } /** * lpfc_mbx_cmpl_redisc_fcf_table - completion routine for rediscover FCF table * @phba: pointer to lpfc hba data structure. * * This routine is the completion routine for the rediscover FCF table mailbox * command. If the mailbox command returned failure, it will try to stop the * FCF rediscover wait timer. **/ void lpfc_mbx_cmpl_redisc_fcf_table(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox) { struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf; uint32_t shdr_status, shdr_add_status; redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl; shdr_status = bf_get(lpfc_mbox_hdr_status, &redisc_fcf->header.cfg_shdr.response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &redisc_fcf->header.cfg_shdr.response); if (shdr_status || shdr_add_status) { lpfc_printf_log(phba, KERN_ERR, LOG_FIP, "2746 Requesting for FCF rediscovery failed " "status x%x add_status x%x\n", shdr_status, shdr_add_status); if (phba->fcf.fcf_flag & FCF_ACVL_DISC) { spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_ACVL_DISC; spin_unlock_irq(&phba->hbalock); /* * CVL event triggered FCF rediscover request failed, * last resort to re-try current registered FCF entry. */ lpfc_retry_pport_discovery(phba); } else { spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_DEAD_DISC; spin_unlock_irq(&phba->hbalock); /* * DEAD FCF event triggered FCF rediscover request * failed, last resort to fail over as a link down * to FCF registration. */ lpfc_sli4_fcf_dead_failthrough(phba); } } else { lpfc_printf_log(phba, KERN_INFO, LOG_FIP, "2775 Start FCF rediscovery quiescent period " "wait timer before scaning FCF table\n"); /* * Start FCF rediscovery wait timer for pending FCF * before rescan FCF record table. */ lpfc_fcf_redisc_wait_start_timer(phba); } mempool_free(mbox, phba->mbox_mem_pool); } /** * lpfc_sli4_redisc_all_fcf - Request to rediscover entire FCF table by port. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to request for rediscovery of the entire FCF table * by the port. **/ int lpfc_sli4_redisc_fcf_table(struct lpfc_hba *phba) { LPFC_MBOXQ_t *mbox; struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf; int rc, length; /* Cancel retry delay timers to all vports before FCF rediscover */ lpfc_cancel_all_vport_retry_delay_timer(phba); mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "2745 Failed to allocate mbox for " "requesting FCF rediscover.\n"); return -ENOMEM; } length = (sizeof(struct lpfc_mbx_redisc_fcf_tbl) - sizeof(struct lpfc_sli4_cfg_mhdr)); lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_REDISCOVER_FCF, length, LPFC_SLI4_MBX_EMBED); redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl; /* Set count to 0 for invalidating the entire FCF database */ bf_set(lpfc_mbx_redisc_fcf_count, redisc_fcf, 0); /* Issue the mailbox command asynchronously */ mbox->vport = phba->pport; mbox->mbox_cmpl = lpfc_mbx_cmpl_redisc_fcf_table; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { mempool_free(mbox, phba->mbox_mem_pool); return -EIO; } return 0; } /** * lpfc_sli4_fcf_dead_failthrough - Failthrough routine to fcf dead event * @phba: pointer to lpfc hba data structure. * * This function is the failover routine as a last resort to the FCF DEAD * event when driver failed to perform fast FCF failover. **/ void lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *phba) { uint32_t link_state; /* * Last resort as FCF DEAD event failover will treat this as * a link down, but save the link state because we don't want * it to be changed to Link Down unless it is already down. */ link_state = phba->link_state; lpfc_linkdown(phba); phba->link_state = link_state; /* Unregister FCF if no devices connected to it */ lpfc_unregister_unused_fcf(phba); } /** * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled. * @phba: pointer to lpfc hba data structure. * * This function read region 23 and parse TLV for port status to * decide if the user disaled the port. If the TLV indicates the * port is disabled, the hba_flag is set accordingly. **/ void lpfc_sli_read_link_ste(struct lpfc_hba *phba) { LPFC_MBOXQ_t *pmb = NULL; MAILBOX_t *mb; uint8_t *rgn23_data = NULL; uint32_t offset = 0, data_size, sub_tlv_len, tlv_offset; int rc; pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2600 lpfc_sli_read_serdes_param failed to" " allocate mailbox memory\n"); goto out; } mb = &pmb->u.mb; /* Get adapter Region 23 data */ rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL); if (!rgn23_data) goto out; do { lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "2601 lpfc_sli_read_link_ste failed to" " read config region 23 rc 0x%x Status 0x%x\n", rc, mb->mbxStatus); mb->un.varDmp.word_cnt = 0; } /* * dump mem may return a zero when finished or we got a * mailbox error, either way we are done. */ if (mb->un.varDmp.word_cnt == 0) break; if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset) mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset; lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, rgn23_data + offset, mb->un.varDmp.word_cnt); offset += mb->un.varDmp.word_cnt; } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE); data_size = offset; offset = 0; if (!data_size) goto out; /* Check the region signature first */ if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2619 Config region 23 has bad signature\n"); goto out; } offset += 4; /* Check the data structure version */ if (rgn23_data[offset] != LPFC_REGION23_VERSION) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "2620 Config region 23 has bad version\n"); goto out; } offset += 4; /* Parse TLV entries in the region */ while (offset < data_size) { if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) break; /* * If the TLV is not driver specific TLV or driver id is * not linux driver id, skip the record. */ if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) || (rgn23_data[offset + 2] != LINUX_DRIVER_ID) || (rgn23_data[offset + 3] != 0)) { offset += rgn23_data[offset + 1] * 4 + 4; continue; } /* Driver found a driver specific TLV in the config region */ sub_tlv_len = rgn23_data[offset + 1] * 4; offset += 4; tlv_offset = 0; /* * Search for configured port state sub-TLV. */ while ((offset < data_size) && (tlv_offset < sub_tlv_len)) { if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) { offset += 4; tlv_offset += 4; break; } if (rgn23_data[offset] != PORT_STE_TYPE) { offset += rgn23_data[offset + 1] * 4 + 4; tlv_offset += rgn23_data[offset + 1] * 4 + 4; continue; } /* This HBA contains PORT_STE configured */ if (!rgn23_data[offset + 2]) phba->hba_flag |= LINK_DISABLED; goto out; } } out: if (pmb) mempool_free(pmb, phba->mbox_mem_pool); kfree(rgn23_data); return; } /** * lpfc_cleanup_pending_mbox - Free up vport discovery mailbox commands. * @vport: pointer to vport data structure. * * This function iterate through the mailboxq and clean up all REG_LOGIN * and REG_VPI mailbox commands associated with the vport. This function * is called when driver want to restart discovery of the vport due to * a Clear Virtual Link event. **/ void lpfc_cleanup_pending_mbox(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mb, *nextmb; struct lpfc_dmabuf *mp; spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { if (mb->vport != vport) continue; if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) && (mb->u.mb.mbxCommand != MBX_REG_VPI)) continue; if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) { mp = (struct lpfc_dmabuf *) (mb->context1); if (mp) { __lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } } list_del(&mb->list); mempool_free(mb, phba->mbox_mem_pool); } mb = phba->sli.mbox_active; if (mb && (mb->vport == vport)) { if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) || (mb->u.mb.mbxCommand == MBX_REG_VPI)) mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; } spin_unlock_irq(&phba->hbalock); }