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Date: Sun, 9 Jan 2022 18:54:42 -0500
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, kuba@...nel.org, gospo@...adcom.com
Subject: [PATCH net-next v2 1/4] bnxt_en: add dynamic debug support for HWRM messages
From: Edwin Peer <edwin.peer@...adcom.com>
Add logging of firmware messages. These can be useful for diagnosing
issues in the field, but due to their verbosity are only appropriate
at a debug message level.
Signed-off-by: Edwin Peer <edwin.peer@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +
.../net/ethernet/broadcom/bnxt/bnxt_hwrm.c | 68 +++++++++++++------
2 files changed, 50 insertions(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 4d7ea62e24fb..203d2ddb5504 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2086,6 +2086,9 @@ static int bnxt_async_event_process(struct bnxt *bp,
u32 data1 = le32_to_cpu(cmpl->event_data1);
u32 data2 = le32_to_cpu(cmpl->event_data2);
+ netdev_dbg(bp->dev, "hwrm event 0x%x {0x%x, 0x%x}\n",
+ event_id, data1, data2);
+
/* TODO CHIMP_FW: Define event id's for link change, error etc */
switch (event_id) {
case ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE: {
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index bb7327b82d0b..a16d1ff6359c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -416,6 +416,32 @@ hwrm_update_token(struct bnxt *bp, u16 seq_id, enum bnxt_hwrm_wait_state state)
netdev_err(bp->dev, "Invalid hwrm seq id %d\n", seq_id);
}
+static void hwrm_req_dbg(struct bnxt *bp, struct input *req)
+{
+ u32 ring = le16_to_cpu(req->cmpl_ring);
+ u32 type = le16_to_cpu(req->req_type);
+ u32 tgt = le16_to_cpu(req->target_id);
+ u32 seq = le16_to_cpu(req->seq_id);
+ char opt[32] = "\n";
+
+ if (unlikely(ring != (u16)BNXT_HWRM_NO_CMPL_RING))
+ snprintf(opt, 16, " ring %d\n", ring);
+
+ if (unlikely(tgt != BNXT_HWRM_TARGET))
+ snprintf(opt + strlen(opt) - 1, 16, " tgt 0x%x\n", tgt);
+
+ netdev_dbg(bp->dev, "sent hwrm req_type 0x%x seq id 0x%x%s",
+ type, seq, opt);
+}
+
+#define hwrm_err(bp, ctx, fmt, ...) \
+ do { \
+ if ((ctx)->flags & BNXT_HWRM_CTX_SILENT) \
+ netdev_dbg((bp)->dev, fmt, __VA_ARGS__); \
+ else \
+ netdev_err((bp)->dev, fmt, __VA_ARGS__); \
+ } while (0)
+
static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
{
u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER;
@@ -436,8 +462,11 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
memset(ctx->resp, 0, PAGE_SIZE);
req_type = le16_to_cpu(ctx->req->req_type);
- if (BNXT_NO_FW_ACCESS(bp) && req_type != HWRM_FUNC_RESET)
+ if (BNXT_NO_FW_ACCESS(bp) && req_type != HWRM_FUNC_RESET) {
+ netdev_dbg(bp->dev, "hwrm req_type 0x%x skipped, FW channel down\n",
+ req_type);
goto exit;
+ }
if (msg_len > BNXT_HWRM_MAX_REQ_LEN &&
msg_len > bp->hwrm_max_ext_req_len) {
@@ -490,6 +519,8 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
/* Ring channel doorbell */
writel(1, bp->bar0 + doorbell_offset);
+ hwrm_req_dbg(bp, ctx->req);
+
if (!pci_is_enabled(bp->pdev)) {
rc = -ENODEV;
goto exit;
@@ -531,9 +562,8 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
}
if (READ_ONCE(token->state) != BNXT_HWRM_COMPLETE) {
- if (!(ctx->flags & BNXT_HWRM_CTX_SILENT))
- netdev_err(bp->dev, "Resp cmpl intr err msg: 0x%x\n",
- le16_to_cpu(ctx->req->req_type));
+ hwrm_err(bp, ctx, "Resp cmpl intr err msg: 0x%x\n",
+ req_type);
goto exit;
}
len = le16_to_cpu(READ_ONCE(ctx->resp->resp_len));
@@ -565,7 +595,7 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
if (resp_seq != seen_out_of_seq) {
netdev_warn(bp->dev, "Discarding out of seq response: 0x%x for msg {0x%x 0x%x}\n",
le16_to_cpu(resp_seq),
- le16_to_cpu(ctx->req->req_type),
+ req_type,
le16_to_cpu(ctx->req->seq_id));
seen_out_of_seq = resp_seq;
}
@@ -585,11 +615,9 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
if (i >= tmo_count) {
timeout_abort:
- if (!(ctx->flags & BNXT_HWRM_CTX_SILENT))
- netdev_err(bp->dev, "Error (timeout: %u) msg {0x%x 0x%x} len:%d\n",
- hwrm_total_timeout(i),
- le16_to_cpu(ctx->req->req_type),
- le16_to_cpu(ctx->req->seq_id), len);
+ hwrm_err(bp, ctx, "Error (timeout: %u) msg {0x%x 0x%x} len:%d\n",
+ hwrm_total_timeout(i), req_type,
+ le16_to_cpu(ctx->req->seq_id), len);
goto exit;
}
@@ -604,12 +632,9 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
}
if (j >= HWRM_VALID_BIT_DELAY_USEC) {
- if (!(ctx->flags & BNXT_HWRM_CTX_SILENT))
- netdev_err(bp->dev, "Error (timeout: %u) msg {0x%x 0x%x} len:%d v:%d\n",
- hwrm_total_timeout(i),
- le16_to_cpu(ctx->req->req_type),
- le16_to_cpu(ctx->req->seq_id), len,
- *valid);
+ hwrm_err(bp, ctx, "Error (timeout: %u) msg {0x%x 0x%x} len:%d v:%d\n",
+ hwrm_total_timeout(i), req_type,
+ le16_to_cpu(ctx->req->seq_id), len, *valid);
goto exit;
}
}
@@ -620,11 +645,12 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
*/
*valid = 0;
rc = le16_to_cpu(ctx->resp->error_code);
- if (rc && !(ctx->flags & BNXT_HWRM_CTX_SILENT)) {
- netdev_err(bp->dev, "hwrm req_type 0x%x seq id 0x%x error 0x%x\n",
- le16_to_cpu(ctx->resp->req_type),
- le16_to_cpu(ctx->resp->seq_id), rc);
- }
+ if (rc == HWRM_ERR_CODE_BUSY && !(ctx->flags & BNXT_HWRM_CTX_SILENT))
+ netdev_warn(bp->dev, "FW returned busy, hwrm req_type 0x%x\n",
+ req_type);
+ else if (rc)
+ hwrm_err(bp, ctx, "hwrm req_type 0x%x seq id 0x%x error 0x%x\n",
+ req_type, token->seq_id, rc);
rc = __hwrm_to_stderr(rc);
exit:
if (token)
--
2.18.1
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