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Date: Sat, 23 Oct 2021 15:32:00 -0400
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, kuba@...nel.org, edwin.peer@...adcom.com,
gospo@...adcom.com, jiri@...dia.com
Subject: [PATCH net-next 13/19] bnxt_en: Retrieve coredump and crashdump size via FW command
From: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
Recent firmware provides coredump and crashdump size info via
DBG_QCFG command. Read the dump sizes from firmware, instead of
computing in the driver. This patch reduces the time taken
to collect the dump via ethtool.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 31 +++++++++++
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 +
.../ethernet/broadcom/bnxt/bnxt_coredump.c | 55 +++++++++++++++++--
3 files changed, 85 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index d619064ab330..4b6a291bb392 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -7480,6 +7480,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
bp->fw_cap |= BNXT_FW_CAP_ERR_RECOVER_RELOAD;
if (!(flags & FUNC_QCAPS_RESP_FLAGS_VLAN_ACCELERATION_TX_DISABLED))
bp->fw_cap |= BNXT_FW_CAP_VLAN_TX_INSERT;
+ if (flags & FUNC_QCAPS_RESP_FLAGS_DBG_QCAPS_CMD_SUPPORTED)
+ bp->fw_cap |= BNXT_FW_CAP_DBG_QCAPS;
flags_ext = le32_to_cpu(resp->flags_ext);
if (flags_ext & FUNC_QCAPS_RESP_FLAGS_EXT_EXT_HW_STATS_SUPPORTED)
@@ -7543,6 +7545,32 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
return rc;
}
+static void bnxt_hwrm_dbg_qcaps(struct bnxt *bp)
+{
+ struct hwrm_dbg_qcaps_output *resp;
+ struct hwrm_dbg_qcaps_input *req;
+ int rc;
+
+ bp->fw_dbg_cap = 0;
+ if (!(bp->fw_cap & BNXT_FW_CAP_DBG_QCAPS))
+ return;
+
+ rc = hwrm_req_init(bp, req, HWRM_DBG_QCAPS);
+ if (rc)
+ return;
+
+ req->fid = cpu_to_le16(0xffff);
+ resp = hwrm_req_hold(bp, req);
+ rc = hwrm_req_send(bp, req);
+ if (rc)
+ goto hwrm_dbg_qcaps_exit;
+
+ bp->fw_dbg_cap = le32_to_cpu(resp->flags);
+
+hwrm_dbg_qcaps_exit:
+ hwrm_req_drop(bp, req);
+}
+
static int bnxt_hwrm_queue_qportcfg(struct bnxt *bp);
static int bnxt_hwrm_func_qcaps(struct bnxt *bp)
@@ -7552,6 +7580,9 @@ static int bnxt_hwrm_func_qcaps(struct bnxt *bp)
rc = __bnxt_hwrm_func_qcaps(bp);
if (rc)
return rc;
+
+ bnxt_hwrm_dbg_qcaps(bp);
+
rc = bnxt_hwrm_queue_qportcfg(bp);
if (rc) {
netdev_err(bp->dev, "hwrm query qportcfg failure rc: %d\n", rc);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index bbbc63e882d1..4165fffec886 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1961,6 +1961,9 @@ struct bnxt {
#define BNXT_FW_CAP_PTP_PPS 0x10000000
#define BNXT_FW_CAP_HOT_RESET_IF 0x20000000
#define BNXT_FW_CAP_RING_MONITOR 0x40000000
+ #define BNXT_FW_CAP_DBG_QCAPS 0x80000000
+
+ u32 fw_dbg_cap;
#define BNXT_NEW_RM(bp) ((bp)->fw_cap & BNXT_FW_CAP_NEW_RM)
u32 hwrm_spec_code;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c
index 05896bf9750d..8961a6ffae87 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c
@@ -361,13 +361,60 @@ int bnxt_get_coredump(struct bnxt *bp, u16 dump_type, void *buf, u32 *dump_len)
}
}
+static int bnxt_hwrm_get_dump_len(struct bnxt *bp, u16 dump_type, u32 *dump_len)
+{
+ struct hwrm_dbg_qcfg_output *resp;
+ struct hwrm_dbg_qcfg_input *req;
+ int rc, hdr_len = 0;
+
+ if (!(bp->fw_cap & BNXT_FW_CAP_DBG_QCAPS))
+ return -EOPNOTSUPP;
+
+ if (dump_type == BNXT_DUMP_CRASH &&
+ !(bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_SOC_DDR))
+ return -EOPNOTSUPP;
+
+ rc = hwrm_req_init(bp, req, HWRM_DBG_QCFG);
+ if (rc)
+ return rc;
+
+ req->fid = cpu_to_le16(0xffff);
+ if (dump_type == BNXT_DUMP_CRASH)
+ req->flags = cpu_to_le16(DBG_QCFG_REQ_FLAGS_CRASHDUMP_SIZE_FOR_DEST_DEST_SOC_DDR);
+
+ resp = hwrm_req_hold(bp, req);
+ rc = hwrm_req_send(bp, req);
+ if (rc)
+ goto get_dump_len_exit;
+
+ if (dump_type == BNXT_DUMP_CRASH) {
+ *dump_len = le32_to_cpu(resp->crashdump_size);
+ } else {
+ /* Driver adds coredump header and "HWRM_VER_GET response"
+ * segment additionally to coredump.
+ */
+ hdr_len = sizeof(struct bnxt_coredump_segment_hdr) +
+ sizeof(struct hwrm_ver_get_output) +
+ sizeof(struct bnxt_coredump_record);
+ *dump_len = le32_to_cpu(resp->coredump_size) + hdr_len;
+ }
+ if (*dump_len <= hdr_len)
+ rc = -EINVAL;
+
+get_dump_len_exit:
+ hwrm_req_drop(bp, req);
+ return rc;
+}
+
u32 bnxt_get_coredump_length(struct bnxt *bp, u16 dump_type)
{
u32 len = 0;
- if (dump_type == BNXT_DUMP_CRASH)
- len = BNXT_CRASH_DUMP_LEN;
- else
- __bnxt_get_coredump(bp, NULL, &len);
+ if (bnxt_hwrm_get_dump_len(bp, dump_type, &len)) {
+ if (dump_type == BNXT_DUMP_CRASH)
+ len = BNXT_CRASH_DUMP_LEN;
+ else
+ __bnxt_get_coredump(bp, NULL, &len);
+ }
return len;
}
--
2.18.1
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