diff options
Diffstat (limited to 'drivers/scsi/smartpqi/smartpqi_sas_transport.c')
| -rw-r--r-- | drivers/scsi/smartpqi/smartpqi_sas_transport.c | 164 |
1 files changed, 155 insertions, 9 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_sas_transport.c b/drivers/scsi/smartpqi/smartpqi_sas_transport.c index b209a35e482e..0e4ef215115f 100644 --- a/drivers/scsi/smartpqi/smartpqi_sas_transport.c +++ b/drivers/scsi/smartpqi/smartpqi_sas_transport.c @@ -17,9 +17,11 @@ */ #include <linux/kernel.h> +#include <linux/bsg-lib.h> #include <scsi/scsi_host.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_transport_sas.h> +#include <asm/unaligned.h> #include "smartpqi.h" static struct pqi_sas_phy *pqi_alloc_sas_phy(struct pqi_sas_port *pqi_sas_port) @@ -97,14 +99,32 @@ static int pqi_sas_port_add_rphy(struct pqi_sas_port *pqi_sas_port, identify = &rphy->identify; identify->sas_address = pqi_sas_port->sas_address; - identify->initiator_port_protocols = SAS_PROTOCOL_STP; - identify->target_port_protocols = SAS_PROTOCOL_STP; + + if (pqi_sas_port->device && + pqi_sas_port->device->is_expander_smp_device) { + identify->initiator_port_protocols = SAS_PROTOCOL_SMP; + identify->target_port_protocols = SAS_PROTOCOL_SMP; + } else { + identify->initiator_port_protocols = SAS_PROTOCOL_STP; + identify->target_port_protocols = SAS_PROTOCOL_STP; + } return sas_rphy_add(rphy); } +static struct sas_rphy *pqi_sas_rphy_alloc(struct pqi_sas_port *pqi_sas_port) +{ + if (pqi_sas_port->device && + pqi_sas_port->device->is_expander_smp_device) + return sas_expander_alloc(pqi_sas_port->port, + SAS_FANOUT_EXPANDER_DEVICE); + + return sas_end_device_alloc(pqi_sas_port->port); +} + static struct pqi_sas_port *pqi_alloc_sas_port( - struct pqi_sas_node *pqi_sas_node, u64 sas_address) + struct pqi_sas_node *pqi_sas_node, u64 sas_address, + struct pqi_scsi_dev *device) { int rc; struct pqi_sas_port *pqi_sas_port; @@ -127,6 +147,7 @@ static struct pqi_sas_port *pqi_alloc_sas_port( pqi_sas_port->port = port; pqi_sas_port->sas_address = sas_address; + pqi_sas_port->device = device; list_add_tail(&pqi_sas_port->port_list_entry, &pqi_sas_node->port_list_head); @@ -146,7 +167,7 @@ static void pqi_free_sas_port(struct pqi_sas_port *pqi_sas_port) struct pqi_sas_phy *next; list_for_each_entry_safe(pqi_sas_phy, next, - &pqi_sas_port->phy_list_head, phy_list_entry) + &pqi_sas_port->phy_list_head, phy_list_entry) pqi_free_sas_phy(pqi_sas_phy); sas_port_delete(pqi_sas_port->port); @@ -176,7 +197,7 @@ static void pqi_free_sas_node(struct pqi_sas_node *pqi_sas_node) return; list_for_each_entry_safe(pqi_sas_port, next, - &pqi_sas_node->port_list_head, port_list_entry) + &pqi_sas_node->port_list_head, port_list_entry) pqi_free_sas_port(pqi_sas_port); kfree(pqi_sas_node); @@ -206,13 +227,14 @@ int pqi_add_sas_host(struct Scsi_Host *shost, struct pqi_ctrl_info *ctrl_info) struct pqi_sas_port *pqi_sas_port; struct pqi_sas_phy *pqi_sas_phy; - parent_dev = &shost->shost_gendev; + parent_dev = &shost->shost_dev; pqi_sas_node = pqi_alloc_sas_node(parent_dev); if (!pqi_sas_node) return -ENOMEM; - pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, ctrl_info->sas_address); + pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, + ctrl_info->sas_address, NULL); if (!pqi_sas_port) { rc = -ENODEV; goto free_sas_node; @@ -254,11 +276,12 @@ int pqi_add_sas_device(struct pqi_sas_node *pqi_sas_node, struct pqi_sas_port *pqi_sas_port; struct sas_rphy *rphy; - pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, device->sas_address); + pqi_sas_port = pqi_alloc_sas_port(pqi_sas_node, + device->sas_address, device); if (!pqi_sas_port) return -ENOMEM; - rphy = sas_end_device_alloc(pqi_sas_port->port); + rphy = pqi_sas_rphy_alloc(pqi_sas_port); if (!rphy) { rc = -ENODEV; goto free_sas_port; @@ -329,6 +352,128 @@ static int pqi_sas_phy_speed(struct sas_phy *phy, return -EINVAL; } +#define CSMI_IOCTL_TIMEOUT 60 +#define SMP_CRC_FIELD_LENGTH 4 + +static struct bmic_csmi_smp_passthru_buffer * +pqi_build_csmi_smp_passthru_buffer(struct sas_rphy *rphy, + struct bsg_job *job) +{ + struct bmic_csmi_smp_passthru_buffer *smp_buf; + struct bmic_csmi_ioctl_header *ioctl_header; + struct bmic_csmi_smp_passthru *parameters; + u32 req_size; + u32 resp_size; + + smp_buf = kzalloc(sizeof(*smp_buf), GFP_KERNEL); + if (!smp_buf) + return NULL; + + req_size = job->request_payload.payload_len; + resp_size = job->reply_payload.payload_len; + + ioctl_header = &smp_buf->ioctl_header; + put_unaligned_le32(sizeof(smp_buf->ioctl_header), + &ioctl_header->header_length); + put_unaligned_le32(CSMI_IOCTL_TIMEOUT, &ioctl_header->timeout); + put_unaligned_le32(CSMI_CC_SAS_SMP_PASSTHRU, + &ioctl_header->control_code); + put_unaligned_le32(sizeof(smp_buf->parameters), &ioctl_header->length); + + parameters = &smp_buf->parameters; + parameters->phy_identifier = rphy->identify.phy_identifier; + parameters->port_identifier = 0; + parameters->connection_rate = 0; + put_unaligned_be64(rphy->identify.sas_address, + ¶meters->destination_sas_address); + + if (req_size > SMP_CRC_FIELD_LENGTH) + req_size -= SMP_CRC_FIELD_LENGTH; + + put_unaligned_le32(req_size, ¶meters->request_length); + + put_unaligned_le32(resp_size, ¶meters->response_length); + + sg_copy_to_buffer(job->request_payload.sg_list, + job->reply_payload.sg_cnt, ¶meters->request, + req_size); + + return smp_buf; +} + +static unsigned int pqi_build_sas_smp_handler_reply( + struct bmic_csmi_smp_passthru_buffer *smp_buf, struct bsg_job *job, + struct pqi_raid_error_info *error_info) +{ + sg_copy_from_buffer(job->reply_payload.sg_list, + job->reply_payload.sg_cnt, &smp_buf->parameters.response, + le32_to_cpu(smp_buf->parameters.response_length)); + + job->reply_len = le16_to_cpu(error_info->sense_data_length); + memcpy(job->reply, error_info->data, + le16_to_cpu(error_info->sense_data_length)); + + return job->reply_payload.payload_len - + get_unaligned_le32(&error_info->data_in_transferred); +} + +void pqi_sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, + struct sas_rphy *rphy) +{ + int rc; + struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); + struct bmic_csmi_smp_passthru_buffer *smp_buf; + struct pqi_raid_error_info error_info; + unsigned int reslen = 0; + + pqi_ctrl_busy(ctrl_info); + + if (job->reply_payload.payload_len == 0) { + rc = -ENOMEM; + goto out; + } + + if (!rphy) { + rc = -EINVAL; + goto out; + } + + if (rphy->identify.device_type != SAS_FANOUT_EXPANDER_DEVICE) { + rc = -EINVAL; + goto out; + } + + if (job->request_payload.sg_cnt > 1 || job->reply_payload.sg_cnt > 1) { + rc = -EINVAL; + goto out; + } + + if (pqi_ctrl_offline(ctrl_info)) { + rc = -ENXIO; + goto out; + } + + if (pqi_ctrl_blocked(ctrl_info)) { + rc = -EBUSY; + goto out; + } + + smp_buf = pqi_build_csmi_smp_passthru_buffer(rphy, job); + if (!smp_buf) { + rc = -ENOMEM; + goto out; + } + + rc = pqi_csmi_smp_passthru(ctrl_info, smp_buf, sizeof(*smp_buf), + &error_info); + if (rc) + goto out; + + reslen = pqi_build_sas_smp_handler_reply(smp_buf, job, &error_info); +out: + bsg_job_done(job, rc, reslen); + pqi_ctrl_unbusy(ctrl_info); +} struct sas_function_template pqi_sas_transport_functions = { .get_linkerrors = pqi_sas_get_linkerrors, .get_enclosure_identifier = pqi_sas_get_enclosure_identifier, @@ -338,4 +483,5 @@ struct sas_function_template pqi_sas_transport_functions = { .phy_setup = pqi_sas_phy_setup, .phy_release = pqi_sas_phy_release, .set_phy_speed = pqi_sas_phy_speed, + .smp_handler = pqi_sas_smp_handler, }; 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