net/qede: support VF FLR

This patch adds required bit to handle VF FLR
indication from Management FW (MFW) of the device

With that VFs were able to load in VM (VF attached as PCI
passthrough to the guest VM) followed by FLR successfully

Updated the docs/guides with the feature support

Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Rasesh Mody <rmody@marvell.com>

diff --git a/doc/guides/nics/features/qede.ini b/doc/guides/nics/features/qede.ini
index f871652..46fba8e 100644 (file)
--- a/doc/guides/nics/features/qede.ini
+++ b/doc/guides/nics/features/qede.ini
@@ -32,6 +32,7 @@ Basic stats          = Y
 Extended stats       = Y
 Stats per queue      = Y
 Registers dump       = Y
+SR-IOV               = Y
 Multiprocess aware   = Y
 Linux UIO            = Y
 Linux VFIO           = Y

diff --git a/doc/guides/nics/qede.rst b/doc/guides/nics/qede.rst
index 5b2f868..e874915 100644 (file)
--- a/doc/guides/nics/qede.rst
+++ b/doc/guides/nics/qede.rst
@@ -34,18 +34,13 @@ Supported Features
 - VLAN offload - Filtering and stripping
 - N-tuple filter and flow director (limited support)
 - NPAR (NIC Partitioning)
-- SR-IOV VF
+- SR-IOV PF and VF
 - GRE Tunneling offload
 - GENEVE Tunneling offload
 - VXLAN Tunneling offload
 - MPLSoUDP Tx Tunneling offload
 - Generic flow API
 
-Non-supported Features
-----------------------
-
-- SR-IOV PF
-
 Co-existence considerations
 ---------------------------
 

diff --git a/drivers/net/qede/base/bcm_osal.c b/drivers/net/qede/base/bcm_osal.c
index ef47339..44a8692 100644 (file)
--- a/drivers/net/qede/base/bcm_osal.c
+++ b/drivers/net/qede/base/bcm_osal.c
@@ -29,6 +29,11 @@ int osal_pf_vf_msg(struct ecore_hwfn *p_hwfn)
        return rc;
 }
 
+void osal_vf_flr_update(struct ecore_hwfn *p_hwfn)
+{
+       qed_schedule_iov(p_hwfn, QED_IOV_WQ_FLR_FLAG);
+}
+
 void osal_poll_mode_dpc(osal_int_ptr_t hwfn_cookie)
 {
        struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)hwfn_cookie;

diff --git a/drivers/net/qede/base/bcm_osal.h b/drivers/net/qede/base/bcm_osal.h
index e7212f4..575d4d0 100644 (file)
--- a/drivers/net/qede/base/bcm_osal.h
+++ b/drivers/net/qede/base/bcm_osal.h
@@ -348,7 +348,9 @@ u32 qede_find_first_zero_bit(u32 *bitmap, u32 length);
 /* SR-IOV channel */
 
 int osal_pf_vf_msg(struct ecore_hwfn *p_hwfn);
-#define OSAL_VF_FLR_UPDATE(hwfn) nothing
+void osal_vf_flr_update(struct ecore_hwfn *p_hwfn);
+#define OSAL_VF_FLR_UPDATE(hwfn) \
+       osal_vf_flr_update(hwfn)
 #define OSAL_VF_SEND_MSG2PF(dev, done, msg, reply_addr, msg_size, reply_size) 0
 #define OSAL_VF_CQE_COMPLETION(_dev_p, _cqe, _protocol)        (0)
 #define OSAL_PF_VF_MSG(hwfn, vfid) \

diff --git a/drivers/net/qede/qede_sriov.c b/drivers/net/qede/qede_sriov.c
index 93f7a2a..0b99a8d 100644 (file)
--- a/drivers/net/qede/qede_sriov.c
+++ b/drivers/net/qede/qede_sriov.c
@@ -151,6 +151,7 @@ static void qed_handle_bulletin_post(struct ecore_hwfn *hwfn)
 void qed_iov_pf_task(void *arg)
 {
        struct ecore_hwfn *p_hwfn = arg;
+       int rc;
 
        if (OSAL_GET_BIT(QED_IOV_WQ_MSG_FLAG, &p_hwfn->iov_task_flags)) {
                OSAL_CLEAR_BIT(QED_IOV_WQ_MSG_FLAG, &p_hwfn->iov_task_flags);
@@ -163,6 +164,23 @@ void qed_iov_pf_task(void *arg)
                               &p_hwfn->iov_task_flags);
                qed_handle_bulletin_post(p_hwfn);
        }
+
+       if (OSAL_GET_BIT(QED_IOV_WQ_FLR_FLAG, &p_hwfn->iov_task_flags)) {
+               struct ecore_ptt *p_ptt = ecore_ptt_acquire(p_hwfn);
+
+               OSAL_CLEAR_BIT(QED_IOV_WQ_FLR_FLAG, &p_hwfn->iov_task_flags);
+
+               if (!p_ptt) {
+                       qed_schedule_iov(p_hwfn, QED_IOV_WQ_FLR_FLAG);
+                       return;
+               }
+
+               rc = ecore_iov_vf_flr_cleanup(p_hwfn, p_ptt);
+               if (rc)
+                       qed_schedule_iov(p_hwfn, QED_IOV_WQ_FLR_FLAG);
+
+               ecore_ptt_release(p_hwfn, p_ptt);
+       }
 }
 
 int qed_schedule_iov(struct ecore_hwfn *p_hwfn, enum qed_iov_wq_flag flag)