[PATCH net-next 02/11] bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type

[Michael Chan <michael.chan@broadcom.com>]

From: Shruti Parab <shruti.parab@broadcom.com>

Add a new bit to struct bnxt_ctx_mem_type to indicate that host
memory has been successfully allocated for this context memory type.
In the next patches, we'll be adding some additional context memory
types for FW debugging/logging.  If memory cannot be allocated for
any of these new types, we will not abort and the cleared mem_valid
bit will indicate to skip configuring the memory type.

Reviewed-by: Hongguang Gao <hongguang.gao@broadcom.com>
Signed-off-by: Shruti Parab <shruti.parab@broadcom.com>
Signed-of-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 +++++
 drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index e9aab2e2840e..2f445a4fbf37 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -8682,6 +8682,8 @@ static int bnxt_setup_ctxm_pg_tbls(struct bnxt *bp,
 		rc = bnxt_alloc_ctx_pg_tbls(bp, &ctx_pg[i], mem_size, pg_lvl,
 					    ctxm->init_value ? ctxm : NULL);
 	}
+	if (!rc)
+		ctxm->mem_valid = 1;
 	return rc;
 }
 
@@ -8752,6 +8754,8 @@ static int bnxt_backing_store_cfg_v2(struct bnxt *bp, u32 ena)
 	for (type = 0 ; type < BNXT_CTX_V2_MAX; type++) {
 		ctxm = &ctx->ctx_arr[type];
 
+		if (!ctxm->mem_valid)
+			continue;
 		rc = bnxt_hwrm_func_backing_store_cfg_v2(bp, ctxm, ctxm->last);
 		if (rc)
 			return rc;
@@ -8781,6 +8785,7 @@ void bnxt_free_ctx_mem(struct bnxt *bp)
 
 		kfree(ctx_pg);
 		ctxm->pg_info = NULL;
+		ctxm->mem_valid = 0;
 	}
 
 	ctx->flags &= ~BNXT_CTX_FLAG_INITED;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 69231e85140b..5b921c57a9f8 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1888,6 +1888,7 @@ struct bnxt_ctx_mem_type {
 	u32	max_entries;
 	u32	min_entries;
 	u8	last:1;
+	u8	mem_valid:1;
 	u8	split_entry_cnt;
 #define BNXT_MAX_SPLIT_ENTRY	4
 	union {
-- 
2.30.1