diff mbox series

[net-next,5/7] bnxt_en: Initialize "context kind" field for context memory blocks.

Message ID 1613343901-6629-6-git-send-email-michael.chan@broadcom.com (mailing list archive)
State Accepted
Commit 41435c39400071904a9b569d7bfc053c7c644bc5
Delegated to: Netdev Maintainers
Headers show
Series bnxt_en: Error recovery optimizations. | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for net-next
netdev/subject_prefix success Link
netdev/cc_maintainers success CCed 4 of 4 maintainers
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 70 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Michael Chan Feb. 14, 2021, 11:04 p.m. UTC 
If firmware provides the offset to the "context kind" field of the
relevant context memory blocks, we'll initialize just that field for
each block instead of initializing all of context memory.

Populate the bnxt_mem_init structure with the proper offset returned
by firmware.  If it is older firmware and the information is not
available, we set the offset to an invalid value and fall back to
the old behavior of initializing every byte.  Otherwise, we initialize
only the "context kind" byte at the offset.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 47 ++++++++++++++++++++---
 1 file changed, 42 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 888466c3ed78..2bd9358c11e0 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2688,6 +2688,23 @@  static void bnxt_free_skbs(struct bnxt *bp)
 	bnxt_free_rx_skbs(bp);
 }
 
+static void bnxt_init_ctx_mem(struct bnxt_mem_init *mem_init, void *p, int len)
+{
+	u8 init_val = mem_init->init_val;
+	u16 offset = mem_init->offset;
+	u8 *p2 = p;
+	int i;
+
+	if (!init_val)
+		return;
+	if (offset == BNXT_MEM_INVALID_OFFSET) {
+		memset(p, init_val, len);
+		return;
+	}
+	for (i = 0; i < len; i += mem_init->size)
+		*(p2 + i + offset) = init_val;
+}
+
 static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem)
 {
 	struct pci_dev *pdev = bp->pdev;
@@ -2747,9 +2764,9 @@  static int bnxt_alloc_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem)
 		if (!rmem->pg_arr[i])
 			return -ENOMEM;
 
-		if (rmem->mem_init && rmem->mem_init->init_val)
-			memset(rmem->pg_arr[i], rmem->mem_init->init_val,
-			       rmem->page_size);
+		if (rmem->mem_init)
+			bnxt_init_ctx_mem(rmem->mem_init, rmem->pg_arr[i],
+					  rmem->page_size);
 		if (rmem->nr_pages > 1 || rmem->depth > 0) {
 			if (i == rmem->nr_pages - 2 &&
 			    (rmem->flags & BNXT_RMEM_RING_PTE_FLAG))
@@ -6754,13 +6771,33 @@  static void bnxt_init_ctx_initializer(struct bnxt_ctx_mem_info *ctx,
 			struct hwrm_func_backing_store_qcaps_output *resp)
 {
 	struct bnxt_mem_init *mem_init;
+	u16 init_mask;
 	u8 init_val;
+	u8 *offset;
 	int i;
 
 	init_val = resp->ctx_kind_initializer;
-	mem_init = &ctx->mem_init[0];
-	for (i = 0; i < BNXT_CTX_MEM_INIT_MAX; i++, mem_init++)
+	init_mask = le16_to_cpu(resp->ctx_init_mask);
+	offset = &resp->qp_init_offset;
+	mem_init = &ctx->mem_init[BNXT_CTX_MEM_INIT_QP];
+	for (i = 0; i < BNXT_CTX_MEM_INIT_MAX; i++, mem_init++, offset++) {
 		mem_init->init_val = init_val;
+		mem_init->offset = BNXT_MEM_INVALID_OFFSET;
+		if (!init_mask)
+			continue;
+		if (i == BNXT_CTX_MEM_INIT_STAT)
+			offset = &resp->stat_init_offset;
+		if (init_mask & (1 << i))
+			mem_init->offset = *offset * 4;
+		else
+			mem_init->init_val = 0;
+	}
+	ctx->mem_init[BNXT_CTX_MEM_INIT_QP].size = ctx->qp_entry_size;
+	ctx->mem_init[BNXT_CTX_MEM_INIT_SRQ].size = ctx->srq_entry_size;
+	ctx->mem_init[BNXT_CTX_MEM_INIT_CQ].size = ctx->cq_entry_size;
+	ctx->mem_init[BNXT_CTX_MEM_INIT_VNIC].size = ctx->vnic_entry_size;
+	ctx->mem_init[BNXT_CTX_MEM_INIT_STAT].size = ctx->stat_entry_size;
+	ctx->mem_init[BNXT_CTX_MEM_INIT_MRAV].size = ctx->mrav_entry_size;
 }
 
 static int bnxt_hwrm_func_backing_store_qcaps(struct bnxt *bp)