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| author | Dmitry Kravkov <dmitry@broadcom.com> | 2012-03-18 10:33:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-03-19 16:53:07 -0400 |
| commit | de1288041d01120559d53ebd98e0f92476ee56d3 (patch) | |
| tree | 564ff51d2be23eb4f1c9d5d008538af245767d22 | |
| parent | cb4dca277694f6c53bf6daf0f5c609dda32e4656 (diff) | |
| download | linux-3.10-de1288041d01120559d53ebd98e0f92476ee56d3.tar.gz linux-3.10-de1288041d01120559d53ebd98e0f92476ee56d3.tar.bz2 linux-3.10-de1288041d01120559d53ebd98e0f92476ee56d3.zip | |
bnx2x: validate FW trace prior to its printing
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -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 0c5f1211559..5d71b7d4323 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 df350708022..f7f9aa80726 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; |