qed: IOV configure and FLR

While previous patches have already added the necessary logic to probe
VFs as well as enabling them in the HW, this patch adds the ability to
support VF FLR & SRIOV disable.

It then wraps both flows together into the first IOV callback to be
provided to the protocol driver - `configure'. This would later to be used
to enable and disable SRIOV in the adapter.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 32 insertions, 1 deletions

diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.h b/drivers/net/ethernet/qlogic/qed/qed_sriov.h
index 4f190d25ee14..10794b08fd21 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_sriov.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.h
@@ -24,6 +24,13 @@
 #define QED_MAX_VF_CHAINS_PER_PF 16
 #define QED_ETH_VF_NUM_VLAN_FILTERS 2
 
+struct qed_public_vf_info {
+	/* These copies will later be reflected in the bulletin board,
+	 * but this copy should be newer.
+	 */
+	u8 mac[ETH_ALEN];
+};
+
 /* This struct is part of qed_dev and contains data relevant to all hwfns;
  * Initialized only if SR-IOV cpabability is exposed in PCIe config space.
  */
@@ -74,6 +81,7 @@ struct qed_vf_q_info {
 enum vf_state {
 	VF_FREE = 0,		/* VF ready to be acquired holds no resc */
 	VF_ACQUIRED,		/* VF, acquired, but not initalized */
+	VF_RESET,		/* VF, FLR'd, pending cleanup */
 	VF_STOPPED		/* VF, Stopped */
 };
 
@@ -82,6 +90,7 @@ struct qed_vf_info {
 	struct qed_iov_vf_mbx vf_mbx;
 	enum vf_state state;
 	bool b_init;
+	u8 to_disable;
 
 	struct qed_bulletin bulletin;
 	dma_addr_t vf_bulletin;
@@ -105,7 +114,7 @@ struct qed_vf_info {
 	u8 num_vlan_filters;
 	struct qed_vf_q_info vf_queues[QED_MAX_VF_CHAINS_PER_PF];
 	u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF];
-
+	struct qed_public_vf_info p_vf_info;
 };
 
 /* This structure is part of qed_hwfn and used only for PFs that have sriov
@@ -219,11 +228,22 @@ void qed_iov_free_hw_info(struct qed_dev *cdev);
 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn,
 			u8 opcode, __le16 echo, union event_ring_data *data);
 
+/**
+ * @brief Mark structs of vfs that have been FLR-ed.
+ *
+ * @param p_hwfn
+ * @param disabled_vfs - bitmask of all VFs on path that were FLRed
+ *
+ * @return 1 iff one of the PF's vfs got FLRed. 0 otherwise.
+ */
+int qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs);
+
 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first);
 int qed_iov_wq_start(struct qed_dev *cdev);
 
 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag);
 void qed_vf_start_iov_wq(struct qed_dev *cdev);
+int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled);
 #else
 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn,
 					     u16 rel_vf_id)
@@ -260,6 +280,12 @@ static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn,
 	return -EINVAL;
 }
 
+static inline int qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn,
+				      u32 *disabled_vfs)
+{
+	return 0;
+}
+
 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first)
 {
 }
@@ -277,6 +303,11 @@ static inline void qed_schedule_iov(struct qed_hwfn *hwfn,
 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev)
 {
 }
+
+static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled)
+{
+	return 0;
+}
 #endif
 
 #define qed_for_each_vf(_p_hwfn, _i)			  \