bnx2: Dump some state during tx timeout.

To help debug the problem.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 25 insertions, 0 deletions

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 03eb51f1c694..665253a3e73a 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -6279,10 +6279,33 @@ bnx2_reset_task(struct work_struct *work)
 }
 
 static void
+bnx2_dump_state(struct bnx2 *bp)
+{
+        struct net_device *dev = bp->dev;
+
+        printk(KERN_ERR PFX "%s DEBUG: intr_sem[%x]\n", dev->name,
+                atomic_read(&bp->intr_sem));
+        printk(KERN_ERR PFX "%s DEBUG: EMAC_TX_STATUS[%08x] "
+                            "RPM_MGMT_PKT_CTRL[%08x]\n", dev->name,
+                REG_RD(bp, BNX2_EMAC_TX_STATUS),
+                REG_RD(bp, BNX2_RPM_MGMT_PKT_CTRL));
+        printk(KERN_ERR PFX "%s DEBUG: MCP_STATE_P0[%08x] MCP_STATE_P1[%08x]\n",
+                dev->name, bnx2_reg_rd_ind(bp, BNX2_MCP_STATE_P0),
+                bnx2_reg_rd_ind(bp, BNX2_MCP_STATE_P1));
+        printk(KERN_ERR PFX "%s DEBUG: HC_STATS_INTERRUPT_STATUS[%08x]\n",
+                dev->name, REG_RD(bp, BNX2_HC_STATS_INTERRUPT_STATUS));
+        if (bp->flags & BNX2_FLAG_USING_MSIX)
+                printk(KERN_ERR PFX "%s DEBUG: PBA[%08x]\n", dev->name,
+                        REG_RD(bp, BNX2_PCI_GRC_WINDOW3_BASE));
+}
+
+static void
 bnx2_tx_timeout(struct net_device *dev)
 {
         struct bnx2 *bp = netdev_priv(dev);
 
+        bnx2_dump_state(bp);
+
         /* This allows the netif to be shutdown gracefully before resetting */
         schedule_work(&bp->reset_task);
 }
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index 4908b9f74260..939dc44d50a0 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -6345,6 +6345,8 @@ struct l2_fhdr {
 
 #define BNX2_MCP_ROM                                    0x00150000
 #define BNX2_MCP_SCRATCH                                0x00160000
+#define BNX2_MCP_STATE_P1                                0x0016f9c8
+#define BNX2_MCP_STATE_P0                                0x0016fdc8
 
 #define BNX2_SHM_HDR_SIGNATURE                          BNX2_MCP_SCRATCH
 #define BNX2_SHM_HDR_SIGNATURE_SIG_MASK                  0xffff0000