qed: Add bitmaps for VF CIDs

Each PF has a bitmap for its own ranges of CIDs, to allow easy grabbing
of an available CID when such is needed. But VFs are not using the same
mechanism, instead relying on hard-coded CIDs [ queue-index == cid ].

As an infrastructure step toward increasing number of CIDs of VFs,
the PF is going to maintain bitmaps for the VF CIDs as well -
the bitmaps would be per-VF and the ranges would be the same [in HW all
VFs of a given PF have the same mapping of CIDs, and the HW is capable
of distinguishing between those according to the VF index]

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

1 files changed, 39 insertions, 15 deletions

diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.h b/drivers/net/ethernet/qlogic/qed/qed_cxt.h
index 53ad532dc212..17836349a274 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_cxt.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.h
@@ -54,19 +54,6 @@ struct qed_tid_mem {
 };
 
 /**
- * @brief qed_cxt_acquire - Acquire a new cid of a specific protocol type
- *
- * @param p_hwfn
- * @param type
- * @param p_cid
- *
- * @return int
- */
-int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
-			enum protocol_type type,
-			u32 *p_cid);
-
-/**
  * @brief qedo_cid_get_cxt_info - Returns the context info for a specific cid
  *
  *
@@ -195,14 +182,51 @@ void qed_qm_init_pf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
  */
 int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 
+#define QED_CXT_PF_CID (0xff)
+
 /**
  * @brief qed_cxt_release - Release a cid
  *
  * @param p_hwfn
  * @param cid
  */
-void qed_cxt_release_cid(struct qed_hwfn *p_hwfn,
-			 u32 cid);
+void qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid);
+
+/**
+ * @brief qed_cxt_release - Release a cid belonging to a vf-queue
+ *
+ * @param p_hwfn
+ * @param cid
+ * @param vfid - engine relative index. QED_CXT_PF_CID if belongs to PF
+ */
+void _qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid, u8 vfid);
+
+/**
+ * @brief qed_cxt_acquire - Acquire a new cid of a specific protocol type
+ *
+ * @param p_hwfn
+ * @param type
+ * @param p_cid
+ *
+ * @return int
+ */
+int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
+			enum protocol_type type, u32 *p_cid);
+
+/**
+ * @brief _qed_cxt_acquire - Acquire a new cid of a specific protocol type
+ *                           for a vf-queue
+ *
+ * @param p_hwfn
+ * @param type
+ * @param p_cid
+ * @param vfid - engine relative index. QED_CXT_PF_CID if belongs to PF
+ *
+ * @return int
+ */
+int _qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
+			 enum protocol_type type, u32 *p_cid, u8 vfid);
+
 int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
 			      enum qed_cxt_elem_type elem_type, u32 iid);
 u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,