ice: Add handler to configure SR-IOV

This patch implements parts of ice_sriov_configure and VF reset flow.

To create virtual functions (VFs), the user sets a value in num_vfs
through sysfs. This results in the kernel calling the handler for
.sriov_configure which is ice_sriov_configure.

VF setup first starts with a VF reset, followed by allocation of the VF
VSI using ice_vf_vsi_setup. Once the VF setup is complete a state bit
ICE_VF_STATE_INIT is set in the vf->states bitmap to indicate that
the VF is ready to go.

Also for VF reset to go into effect, it's necessary to issue a disable
queue command (ice_aqc_opc_dis_txqs). So this patch updates multiple
functions in the disable queue flow to take additional parameters that
distinguish if queues are being disabled due to VF reset.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 639d45d1da49..f788cd63237a 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -28,6 +28,7 @@
 #include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/if_bridge.h>
+#include <linux/avf/virtchnl.h>
 #include <net/ipv6.h>
 #include "ice_devids.h"
 #include "ice_type.h"
@@ -35,6 +36,7 @@
 #include "ice_switch.h"
 #include "ice_common.h"
 #include "ice_sched.h"
+#include "ice_virtchnl_pf.h"
 
 extern const char ice_drv_ver[];
 #define ICE_BAR0		0
@@ -65,6 +67,12 @@ extern const char ice_drv_ver[];
 #define ICE_INVAL_Q_INDEX	0xffff
 #define ICE_INVAL_VFID		256
 #define ICE_MAX_VF_COUNT	256
+#define ICE_MAX_QS_PER_VF		256
+#define ICE_MIN_QS_PER_VF		1
+#define ICE_DFLT_QS_PER_VF		4
+#define ICE_MAX_INTR_PER_VF		65
+#define ICE_MIN_INTR_PER_VF		(ICE_MIN_QS_PER_VF + 1)
+#define ICE_DFLT_INTR_PER_VF		(ICE_DFLT_QS_PER_VF + 1)
 
 #define ICE_VSIQF_HKEY_ARRAY_SIZE	((VSIQF_HKEY_MAX_INDEX + 1) *	4)
 
@@ -135,10 +143,20 @@ enum ice_state {
 	__ICE_EMPR_RECV,		/* set by OICR handler */
 	__ICE_SUSPENDED,		/* set on module remove path */
 	__ICE_RESET_FAILED,		/* set by reset/rebuild */
+	/* When checking for the PF to be in a nominal operating state, the
+	 * bits that are grouped at the beginning of the list need to be
+	 * checked.  Bits occurring before __ICE_STATE_NOMINAL_CHECK_BITS will
+	 * be checked.  If you need to add a bit into consideration for nominal
+	 * operating state, it must be added before
+	 * __ICE_STATE_NOMINAL_CHECK_BITS.  Do not move this entry's position
+	 * without appropriate consideration.
+	 */
+	__ICE_STATE_NOMINAL_CHECK_BITS,
 	__ICE_ADMINQ_EVENT_PENDING,
 	__ICE_MAILBOXQ_EVENT_PENDING,
 	__ICE_MDD_EVENT_PENDING,
 	__ICE_FLTR_OVERFLOW_PROMISC,
+	__ICE_VF_DIS,
 	__ICE_CFG_BUSY,
 	__ICE_SERVICE_SCHED,
 	__ICE_SERVICE_DIS,
@@ -243,6 +261,7 @@ enum ice_pf_flags {
 	ICE_FLAG_MSIX_ENA,
 	ICE_FLAG_FLTR_SYNC,
 	ICE_FLAG_RSS_ENA,
+	ICE_FLAG_SRIOV_ENA,
 	ICE_FLAG_SRIOV_CAPABLE,
 	ICE_PF_FLAGS_NBITS		/* must be last */
 };
@@ -259,7 +278,12 @@ struct ice_pf {
 
 	struct ice_vsi **vsi;		/* VSIs created by the driver */
 	struct ice_sw *first_sw;	/* first switch created by firmware */
+	/* Virtchnl/SR-IOV config info */
+	struct ice_vf *vf;
+	int num_alloc_vfs;		/* actual number of VFs allocated */
 	u16 num_vfs_supported;		/* num VFs supported for this PF */
+	u16 num_vf_qps;			/* num queue pairs per VF */
+	u16 num_vf_msix;		/* num vectors per VF */
 	DECLARE_BITMAP(state, __ICE_STATE_NBITS);
 	DECLARE_BITMAP(avail_txqs, ICE_MAX_TXQS);
 	DECLARE_BITMAP(avail_rxqs, ICE_MAX_RXQS);