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path: root/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
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Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c')
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c114
1 files changed, 84 insertions, 30 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
index bb7327b82d0b..132442f16fe6 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c
@@ -359,6 +359,8 @@ static int __hwrm_to_stderr(u32 hwrm_err)
return -EAGAIN;
case HWRM_ERR_CODE_CMD_NOT_SUPPORTED:
return -EOPNOTSUPP;
+ case HWRM_ERR_CODE_PF_UNAVAILABLE:
+ return -ENODEV;
default:
return -EIO;
}
@@ -416,6 +418,44 @@ 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 bool hwrm_wait_must_abort(struct bnxt *bp, u32 req_type, u32 *fw_status)
+{
+ if (req_type == HWRM_VER_GET)
+ return false;
+
+ if (!bp->fw_health || !bp->fw_health->status_reliable)
+ return false;
+
+ *fw_status = bnxt_fw_health_readl(bp, BNXT_FW_HEALTH_REG);
+ return *fw_status && !BNXT_FW_IS_HEALTHY(*fw_status);
+}
+
static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
{
u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER;
@@ -427,8 +467,8 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
unsigned int i, timeout, tmo_count;
u32 *data = (u32 *)ctx->req;
u32 msg_len = ctx->req_len;
+ u32 req_type, sts;
int rc = -EBUSY;
- u32 req_type;
u16 len = 0;
u8 *valid;
@@ -436,8 +476,12 @@ 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 && req_type != HWRM_VER_GET)) {
+ 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) {
@@ -490,13 +534,15 @@ 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;
}
/* Limit timeout to an upper limit */
- timeout = min_t(uint, ctx->timeout, HWRM_CMD_MAX_TIMEOUT);
+ timeout = min(ctx->timeout, bp->hwrm_cmd_max_timeout ?: HWRM_CMD_MAX_TIMEOUT);
/* convert timeout to usec */
timeout *= 1000;
@@ -523,17 +569,19 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
usleep_range(HWRM_SHORT_MIN_TIMEOUT,
HWRM_SHORT_MAX_TIMEOUT);
} else {
- if (HWRM_WAIT_MUST_ABORT(bp, ctx))
- break;
+ if (hwrm_wait_must_abort(bp, req_type, &sts)) {
+ hwrm_err(bp, ctx, "Resp cmpl intr abandoning msg: 0x%x due to firmware status: 0x%x\n",
+ req_type, sts);
+ goto exit;
+ }
usleep_range(HWRM_MIN_TIMEOUT,
HWRM_MAX_TIMEOUT);
}
}
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 +613,7 @@ 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;
}
@@ -576,40 +624,45 @@ static int __hwrm_send(struct bnxt *bp, struct bnxt_hwrm_ctx *ctx)
usleep_range(HWRM_SHORT_MIN_TIMEOUT,
HWRM_SHORT_MAX_TIMEOUT);
} else {
- if (HWRM_WAIT_MUST_ABORT(bp, ctx))
- goto timeout_abort;
+ if (hwrm_wait_must_abort(bp, req_type, &sts)) {
+ hwrm_err(bp, ctx, "Abandoning msg {0x%x 0x%x} len: %d due to firmware status: 0x%x\n",
+ req_type,
+ le16_to_cpu(ctx->req->seq_id),
+ len, sts);
+ goto exit;
+ }
usleep_range(HWRM_MIN_TIMEOUT,
HWRM_MAX_TIMEOUT);
}
}
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;
}
/* Last byte of resp contains valid bit */
valid = ((u8 *)ctx->resp) + len - 1;
- for (j = 0; j < HWRM_VALID_BIT_DELAY_USEC; j++) {
+ for (j = 0; j < HWRM_VALID_BIT_DELAY_USEC; ) {
/* make sure we read from updated DMA memory */
dma_rmb();
if (*valid)
break;
- usleep_range(1, 5);
+ if (j < 10) {
+ udelay(1);
+ j++;
+ } else {
+ usleep_range(20, 30);
+ j += 20;
+ }
}
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) + j, req_type,
+ le16_to_cpu(ctx->req->seq_id), len, *valid);
goto exit;
}
}
@@ -620,11 +673,12 @@ timeout_abort:
*/
*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 && rc != HWRM_ERR_CODE_PF_UNAVAILABLE)
+ 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)
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