From: Vasundhara Volam vasundhara-v.volam@broadcom.com
Driver supports 2 types of core dumps.
1. Live dump - Firmware dump when system is up and running. 2. Crash dump - Dump which is collected during firmware crash that can be retrieved after recovery. Crash dump is currently supported only on specific 58800 chips which can be retrieved using OP-TEE API only, as firmware cannot access this region directly.
User needs to set the dump flag using following command before initiating the dump collection:
$ ethtool -W|--set-dump eth0 N
Where N is "0" for live dump and "1" for crash dump
Command to collect the dump after setting the flag:
$ ethtool -w eth0 data Filename
v3: Modify set_dump to support even when CONFIG_TEE_BNXT_FW=n. Also change log message to netdev_info().
Cc: Jakub Kicinski jakub.kicinski@netronome.com Cc: Michael Chan michael.chan@broadcom.com Signed-off-by: Vasundhara Volam vasundhara-v.volam@broadcom.com Signed-off-by: Sheetal Tigadoli sheetal.tigadoli@broadcom.com --- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 ++ .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 37 ++++++++++++++++++- .../net/ethernet/broadcom/bnxt/bnxt_ethtool.h | 2 + 3 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 09437150f818..3e7d1fb1b0b1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -1807,6 +1807,9 @@ struct bnxt {
u8 num_leds; struct bnxt_led_info leds[BNXT_MAX_LED]; + u16 dump_flag; +#define BNXT_DUMP_LIVE 0 +#define BNXT_DUMP_CRASH 1
struct bpf_prog *xdp_prog;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 51c140476717..f2220b826d61 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -3311,6 +3311,24 @@ static int bnxt_get_coredump(struct bnxt *bp, void *buf, u32 *dump_len) return rc; }
+static int bnxt_set_dump(struct net_device *dev, struct ethtool_dump *dump) +{ + struct bnxt *bp = netdev_priv(dev); + + if (dump->flag > BNXT_DUMP_CRASH) { + netdev_info(dev, "Supports only Live(0) and Crash(1) dumps.\n"); + return -EINVAL; + } + + if (!IS_ENABLED(CONFIG_TEE_BNXT_FW) && dump->flag == BNXT_DUMP_CRASH) { + netdev_info(dev, "Cannot collect crash dump as TEE_BNXT_FW config option is not enabled.\n"); + return -EOPNOTSUPP; + } + + bp->dump_flag = dump->flag; + return 0; +} + static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump) { struct bnxt *bp = netdev_priv(dev); @@ -3323,7 +3341,12 @@ static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump) bp->ver_resp.hwrm_fw_bld_8b << 8 | bp->ver_resp.hwrm_fw_rsvd_8b;
- return bnxt_get_coredump(bp, NULL, &dump->len); + dump->flag = bp->dump_flag; + if (bp->dump_flag == BNXT_DUMP_CRASH) + dump->len = BNXT_CRASH_DUMP_LEN; + else + bnxt_get_coredump(bp, NULL, &dump->len); + return 0; }
static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump, @@ -3336,7 +3359,16 @@ static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
memset(buf, 0, dump->len);
- return bnxt_get_coredump(bp, buf, &dump->len); + dump->flag = bp->dump_flag; + if (dump->flag == BNXT_DUMP_CRASH) { +#ifdef CONFIG_TEE_BNXT_FW + return tee_bnxt_copy_coredump(buf, 0, dump->len); +#endif + } else { + return bnxt_get_coredump(bp, buf, &dump->len); + } + + return 0; }
void bnxt_ethtool_init(struct bnxt *bp) @@ -3446,6 +3478,7 @@ const struct ethtool_ops bnxt_ethtool_ops = { .set_phys_id = bnxt_set_phys_id, .self_test = bnxt_self_test, .reset = bnxt_reset, + .set_dump = bnxt_set_dump, .get_dump_flag = bnxt_get_dump_flag, .get_dump_data = bnxt_get_dump_data, }; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h index b5b65b3f8534..01de7e79d14f 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h @@ -59,6 +59,8 @@ struct hwrm_dbg_cmn_output { #define HWRM_DBG_CMN_FLAGS_MORE 1 };
+#define BNXT_CRASH_DUMP_LEN (8 << 20) + #define BNXT_LED_DFLT_ENA \ (PORT_LED_CFG_REQ_ENABLES_LED0_ID | \ PORT_LED_CFG_REQ_ENABLES_LED0_STATE | \