bnx2x: Infrastructure for VF <-> PF request on PF side

Support interrupt from device which indicates VF has placed
A request on the VF <-> PF channel.
The PF driver issues a DMAE to retrieve the request from the VM
memory (the Ghost Physical Address of the request is contained
in the interrupt. The PF driver uses the GPA in the DMAE request,
which is translated by the IOMMU to the correct physical address).
The request which arrives is examined to recognize the sending VF.
The PF driver allocates a workitem to handle the VF Operation (vfop).

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 102 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h
index 0e521b0275e0..6af7bde74ddc 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h
@@ -83,6 +83,84 @@ union bnx2x_vfop_params {
 
 /* forward */
 struct bnx2x_virtf;
+
+/* VFOP definitions */
+typedef void (*vfop_handler_t)(struct bnx2x *bp, struct bnx2x_virtf *vf);
+
+/* VFOP queue filters command additional arguments */
+struct bnx2x_vfop_filter {
+	struct list_head link;
+	int type;
+#define BNX2X_VFOP_FILTER_MAC	1
+#define BNX2X_VFOP_FILTER_VLAN	2
+
+	bool add;
+	u8 *mac;
+	u16 vid;
+};
+
+struct bnx2x_vfop_filters {
+	int add_cnt;
+	struct list_head head;
+	struct bnx2x_vfop_filter filters[];
+};
+
+/* transient list allocated, built and saved until its
+ * passed to the SP-VERBs layer.
+ */
+struct bnx2x_vfop_args_mcast {
+	int mc_num;
+	struct bnx2x_mcast_list_elem *mc;
+};
+
+struct bnx2x_vfop_args_qctor {
+	int	qid;
+	u16	sb_idx;
+};
+
+struct bnx2x_vfop_args_qdtor {
+	int	qid;
+	struct eth_context *cxt;
+};
+
+struct bnx2x_vfop_args_defvlan {
+	int	qid;
+	bool	enable;
+	u16	vid;
+	u8	prio;
+};
+
+struct bnx2x_vfop_args_qx {
+	int	qid;
+	bool	en_add;
+};
+
+struct bnx2x_vfop_args_filters {
+	struct bnx2x_vfop_filters *multi_filter;
+	atomic_t *credit;	/* non NULL means 'don't consume credit' */
+};
+
+union bnx2x_vfop_args {
+	struct bnx2x_vfop_args_mcast	mc_list;
+	struct bnx2x_vfop_args_qctor	qctor;
+	struct bnx2x_vfop_args_qdtor	qdtor;
+	struct bnx2x_vfop_args_defvlan	defvlan;
+	struct bnx2x_vfop_args_qx	qx;
+	struct bnx2x_vfop_args_filters	filters;
+};
+
+struct bnx2x_vfop {
+	struct list_head link;
+	int			rc;		/* return code */
+	int			state;		/* next state */
+	union bnx2x_vfop_args	args;		/* extra arguments */
+	union bnx2x_vfop_params *op_p;		/* ramrod params */
+
+	/* state machine callbacks */
+	vfop_handler_t transition;
+	vfop_handler_t done;
+};
+
 /* vf context */
 struct bnx2x_virtf {
 	u16 cfg_flags;
@@ -281,6 +359,12 @@ struct bnx2x_vfdb {
 	u32 flrd_vfs[FLRD_VFS_DWORDS];
 };
 
+/* queue access */
+static inline struct bnx2x_vf_queue *vfq_get(struct bnx2x_virtf *vf, u8 index)
+{
+	return &(vf->vfqs[index]);
+}
+
 static inline u8 vf_igu_sb(struct bnx2x_virtf *vf, u16 sb_idx)
 {
 	return vf->igu_base_id + sb_idx;
@@ -295,7 +379,22 @@ int bnx2x_iov_alloc_mem(struct bnx2x *bp);
 int bnx2x_iov_nic_init(struct bnx2x *bp);
 void bnx2x_iov_init_dq(struct bnx2x *bp);
 void bnx2x_iov_init_dmae(struct bnx2x *bp);
+void bnx2x_iov_set_queue_sp_obj(struct bnx2x *bp, int vf_cid,
+				struct bnx2x_queue_sp_obj **q_obj);
+void bnx2x_iov_sp_event(struct bnx2x *bp, int vf_cid, bool queue_work);
+int bnx2x_iov_eq_sp_event(struct bnx2x *bp, union event_ring_elem *elem);
+void bnx2x_iov_sp_task(struct bnx2x *bp);
+/* global vf mailbox routines */
+void bnx2x_vf_mbx(struct bnx2x *bp, struct vf_pf_event_data *vfpf_event);
 void bnx2x_vf_enable_mbx(struct bnx2x *bp, u8 abs_vfid);
+static inline struct bnx2x_vfop *bnx2x_vfop_cur(struct bnx2x *bp,
+						struct bnx2x_virtf *vf)
+{
+	WARN(!mutex_is_locked(&vf->op_mutex), "about to access vf op linked list but mutex was not locked!");
+	WARN_ON(list_empty(&vf->op_list_head));
+	return list_first_entry(&vf->op_list_head, struct bnx2x_vfop, link);
+}
+
 int bnx2x_vf_idx_by_abs_fid(struct bnx2x *bp, u16 abs_vfid);
 /* VF FLR helpers */
 int bnx2x_vf_flr_clnup_epilog(struct bnx2x *bp, u8 abs_vfid);
@@ -305,4 +404,7 @@ void bnx2x_add_tlv(struct bnx2x *bp, void *tlvs_list, u16 offset, u16 type,
 void bnx2x_vfpf_prep(struct bnx2x *bp, struct vfpf_first_tlv *first_tlv,
 		     u16 type, u16 length);
 void bnx2x_dp_tlv_list(struct bnx2x *bp, void *tlvs_list);
+
+bool bnx2x_tlv_supported(u16 tlvtype);
+
 #endif /* bnx2x_sriov.h */