diff options
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 12 |
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h index 0c5f1211559a..5d71b7d43237 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h @@ -1129,6 +1129,8 @@ struct shm_dev_info { /* size */ #define FW_ACK_NUM_OF_POLL (FW_ACK_TIME_OUT_MS/FW_ACK_POLL_TIME_MS) +#define MFW_TRACE_SIGNATURE 0x54524342 + /**************************************************************************** * Driver <-> FW Mailbox * ****************************************************************************/ diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index df350708022e..f7f9aa807264 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -719,7 +719,17 @@ void bnx2x_fw_dump_lvl(struct bnx2x *bp, const char *lvl) trace_shmem_base = bp->common.shmem_base; else trace_shmem_base = SHMEM2_RD(bp, other_shmem_base_addr); - addr = trace_shmem_base - 0x0800 + 4; + addr = trace_shmem_base - 0x800; + + /* validate TRCB signature */ + mark = REG_RD(bp, addr); + if (mark != MFW_TRACE_SIGNATURE) { + BNX2X_ERR("Trace buffer signature is missing."); + return ; + } + + /* read cyclic buffer pointer */ + addr += 4; mark = REG_RD(bp, addr); mark = (CHIP_IS_E1x(bp) ? MCP_REG_MCPR_SCRATCH : MCP_A_REG_MCPR_SCRATCH) + ((mark + 0x3) & ~0x3) - 0x08000000; |