bnx2: Dump some state during tx timeout.

To help debug the problem.

Signed-off-by: Michael Chan <[e-mail]>
Signed-off-by: Benjamin Li <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/bnx2.c

···
 }
 
 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);

drivers/net/bnx2.h

···
 
 #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