bnx2x: Add MFW dump support

Devices with up-to-date management FW will be able to store register dumps
on their persistent storage - in case management FW identifies a fatal
error it would gather and store such dumps, which could later be retrieved
using specific debug tools.

This patch adds the necessary part in the driver in order to make the
feature operational, as well as update users [under debug] during load
in case their device contains a dump of a previous crash.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index ecf1d7f6ab27908e6efcba20d77fe8bf0f7305a9..2fe3563d25286663b52e23f687b18610a3e30eb9 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -2582,6 +2582,8 @@ void bnx2x_set_local_cmng(struct bnx2x *bp);
 
 void bnx2x_update_mng_version(struct bnx2x *bp);
 
+void bnx2x_update_mfw_dump(struct bnx2x *bp);
+
 #define MCPR_SCRATCH_BASE(bp) \
        (CHIP_IS_E1x(bp) ? MCP_REG_MCPR_SCRATCH : MCP_A_REG_MCPR_SCRATCH)
 

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index b1d16d34551df81d28f9df0e74adafd864efd194..6088c86c487270507a73eb98c9d9f35ace25b3cb 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -2908,6 +2908,10 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
                return -EBUSY;
        }
 
+       /* Update driver data for On-Chip MFW dump. */
+       if (IS_PF(bp))
+               bnx2x_update_mfw_dump(bp);
+
        /* If PMF - send ADMIN DCBX msg to MFW to initiate DCBX FSM */
        if (bp->port.pmf && (bp->state != BNX2X_STATE_DIAG))
                bnx2x_dcbx_init(bp, false);

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
index 23960df7e595a5454078f0b6574f36df0340f7ff..08a08fa49caad3fb8850b0f92f4285c43a667835 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
@@ -2075,6 +2075,20 @@ enum curr_cfg_method_e {
        CURR_CFG_MET_VENDOR_SPEC = 2,/* e.g. Option ROM, NPAR, O/S Cfg Utils */
 };
 
+struct mdump_driver_info {
+       u32 epoc;
+       u32 drv_ver;
+       u32 fw_ver;
+
+       u32 valid_dump;
+       #define FIRST_DUMP_VALID        (1 << 0)
+       #define SECOND_DUMP_VALID       (1 << 1)
+
+       u32 flags;
+       #define ENABLE_ALL_TRIGGERS     (0x7fffffff)
+       #define TRIGGER_MDUMP_ONCE      (1 << 31)
+};
+
 struct ncsi_oem_data {
        u32 driver_version[4];
        struct ncsi_oem_fcoe_features ncsi_oem_fcoe_features;
@@ -2347,6 +2361,9 @@ struct shmem2_region {
        #define OS_DRIVER_STATE_LOADING         1 /* transition state */
        #define OS_DRIVER_STATE_DISABLED        2 /* installed but disabled */
        #define OS_DRIVER_STATE_ACTIVE          3 /* installed and active */
+
+       /* mini dump driver info */
+       struct mdump_driver_info drv_info;                      /* 0x218 */
 };
 
 

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 0a069fa8e1fb934eb38073f993b47c7c728085a2..78e55fe616e3c2013b146dcc2fd3c77952073be9 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -3709,6 +3709,34 @@ out:
           ethver, iscsiver, fcoever);
 }
 
+void bnx2x_update_mfw_dump(struct bnx2x *bp)
+{
+       struct timeval epoc;
+       u32 drv_ver;
+       u32 valid_dump;
+
+       if (!SHMEM2_HAS(bp, drv_info))
+               return;
+
+       /* Update Driver load time */
+       do_gettimeofday(&epoc);
+       SHMEM2_WR(bp, drv_info.epoc, epoc.tv_sec);
+
+       drv_ver = bnx2x_update_mng_version_utility(DRV_MODULE_VERSION, true);
+       SHMEM2_WR(bp, drv_info.drv_ver, drv_ver);
+
+       SHMEM2_WR(bp, drv_info.fw_ver, REG_RD(bp, XSEM_REG_PRAM));
+
+       /* Check & notify On-Chip dump. */
+       valid_dump = SHMEM2_RD(bp, drv_info.valid_dump);
+
+       if (valid_dump & FIRST_DUMP_VALID)
+               DP(NETIF_MSG_IFUP, "A valid On-Chip MFW dump found on 1st partition\n");
+
+       if (valid_dump & SECOND_DUMP_VALID)
+               DP(NETIF_MSG_IFUP, "A valid On-Chip MFW dump found on 2nd partition\n");
+}
+
 static void bnx2x_oem_event(struct bnx2x *bp, u32 event)
 {
        u32 cmd_ok, cmd_fail;