[TG3]: Add register test

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

drivers/net/tg3.c

@@ -7307,6 +7307,219 @@ static int tg3_test_link(struct tg3 *tp)
 	return -EIO;
 }
 
+/* Only test the commonly used registers */
+static int tg3_test_registers(struct tg3 *tp)
+{
+	int i, is_5705;
+	u32 offset, read_mask, write_mask, val, save_val, read_val;
+	static struct {
+		u16 offset;
+		u16 flags;
+#define TG3_FL_5705	0x1
+#define TG3_FL_NOT_5705	0x2
+#define TG3_FL_NOT_5788	0x4
+		u32 read_mask;
+		u32 write_mask;
+	} reg_tbl[] = {
+		/* MAC Control Registers */
+		{ MAC_MODE, TG3_FL_NOT_5705,
+			0x00000000, 0x00ef6f8c },
+		{ MAC_MODE, TG3_FL_5705,
+			0x00000000, 0x01ef6b8c },
+		{ MAC_STATUS, TG3_FL_NOT_5705,
+			0x03800107, 0x00000000 },
+		{ MAC_STATUS, TG3_FL_5705,
+			0x03800100, 0x00000000 },
+		{ MAC_ADDR_0_HIGH, 0x0000,
+			0x00000000, 0x0000ffff },
+		{ MAC_ADDR_0_LOW, 0x0000,
+		       	0x00000000, 0xffffffff },
+		{ MAC_RX_MTU_SIZE, 0x0000,
+			0x00000000, 0x0000ffff },
+		{ MAC_TX_MODE, 0x0000,
+			0x00000000, 0x00000070 },
+		{ MAC_TX_LENGTHS, 0x0000,
+			0x00000000, 0x00003fff },
+		{ MAC_RX_MODE, TG3_FL_NOT_5705,
+			0x00000000, 0x000007fc },
+		{ MAC_RX_MODE, TG3_FL_5705,
+			0x00000000, 0x000007dc },
+		{ MAC_HASH_REG_0, 0x0000,
+			0x00000000, 0xffffffff },
+		{ MAC_HASH_REG_1, 0x0000,
+			0x00000000, 0xffffffff },
+		{ MAC_HASH_REG_2, 0x0000,
+			0x00000000, 0xffffffff },
+		{ MAC_HASH_REG_3, 0x0000,
+			0x00000000, 0xffffffff },
+
+		/* Receive Data and Receive BD Initiator Control Registers. */
+		{ RCVDBDI_JUMBO_BD+0, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ RCVDBDI_JUMBO_BD+4, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ RCVDBDI_JUMBO_BD+8, TG3_FL_NOT_5705,
+			0x00000000, 0x00000003 },
+		{ RCVDBDI_JUMBO_BD+0xc, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ RCVDBDI_STD_BD+0, 0x0000,
+			0x00000000, 0xffffffff },
+		{ RCVDBDI_STD_BD+4, 0x0000,
+			0x00000000, 0xffffffff },
+		{ RCVDBDI_STD_BD+8, 0x0000,
+			0x00000000, 0xffff0002 },
+		{ RCVDBDI_STD_BD+0xc, 0x0000,
+			0x00000000, 0xffffffff },
+	
+		/* Receive BD Initiator Control Registers. */
+		{ RCVBDI_STD_THRESH, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ RCVBDI_STD_THRESH, TG3_FL_5705,
+			0x00000000, 0x000003ff },
+		{ RCVBDI_JUMBO_THRESH, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+	
+		/* Host Coalescing Control Registers. */
+		{ HOSTCC_MODE, TG3_FL_NOT_5705,
+			0x00000000, 0x00000004 },
+		{ HOSTCC_MODE, TG3_FL_5705,
+			0x00000000, 0x000000f6 },
+		{ HOSTCC_RXCOL_TICKS, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_RXCOL_TICKS, TG3_FL_5705,
+			0x00000000, 0x000003ff },
+		{ HOSTCC_TXCOL_TICKS, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_TXCOL_TICKS, TG3_FL_5705,
+			0x00000000, 0x000003ff },
+		{ HOSTCC_RXMAX_FRAMES, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_RXMAX_FRAMES, TG3_FL_5705 | TG3_FL_NOT_5788,
+			0x00000000, 0x000000ff },
+		{ HOSTCC_TXMAX_FRAMES, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_TXMAX_FRAMES, TG3_FL_5705 | TG3_FL_NOT_5788,
+			0x00000000, 0x000000ff },
+		{ HOSTCC_RXCOAL_TICK_INT, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_TXCOAL_TICK_INT, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_RXCOAL_MAXF_INT, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_RXCOAL_MAXF_INT, TG3_FL_5705 | TG3_FL_NOT_5788,
+			0x00000000, 0x000000ff },
+		{ HOSTCC_TXCOAL_MAXF_INT, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_TXCOAL_MAXF_INT, TG3_FL_5705 | TG3_FL_NOT_5788,
+			0x00000000, 0x000000ff },
+		{ HOSTCC_STAT_COAL_TICKS, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_STATS_BLK_HOST_ADDR, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_STATS_BLK_HOST_ADDR+4, TG3_FL_NOT_5705,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_STATUS_BLK_HOST_ADDR, 0x0000,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_STATUS_BLK_HOST_ADDR+4, 0x0000,
+			0x00000000, 0xffffffff },
+		{ HOSTCC_STATS_BLK_NIC_ADDR, 0x0000,
+			0xffffffff, 0x00000000 },
+		{ HOSTCC_STATUS_BLK_NIC_ADDR, 0x0000,
+			0xffffffff, 0x00000000 },
+
+		/* Buffer Manager Control Registers. */
+		{ BUFMGR_MB_POOL_ADDR, 0x0000,
+			0x00000000, 0x007fff80 },
+		{ BUFMGR_MB_POOL_SIZE, 0x0000,
+			0x00000000, 0x007fffff },
+		{ BUFMGR_MB_RDMA_LOW_WATER, 0x0000,
+			0x00000000, 0x0000003f },
+		{ BUFMGR_MB_MACRX_LOW_WATER, 0x0000,
+			0x00000000, 0x000001ff },
+		{ BUFMGR_MB_HIGH_WATER, 0x0000,
+			0x00000000, 0x000001ff },
+		{ BUFMGR_DMA_DESC_POOL_ADDR, TG3_FL_NOT_5705,
+			0xffffffff, 0x00000000 },
+		{ BUFMGR_DMA_DESC_POOL_SIZE, TG3_FL_NOT_5705,
+			0xffffffff, 0x00000000 },
+	
+		/* Mailbox Registers */
+		{ GRCMBOX_RCVSTD_PROD_IDX+4, 0x0000,
+			0x00000000, 0x000001ff },
+		{ GRCMBOX_RCVJUMBO_PROD_IDX+4, TG3_FL_NOT_5705,
+			0x00000000, 0x000001ff },
+		{ GRCMBOX_RCVRET_CON_IDX_0+4, 0x0000,
+			0x00000000, 0x000007ff },
+		{ GRCMBOX_SNDHOST_PROD_IDX_0+4, 0x0000,
+			0x00000000, 0x000001ff },
+
+		{ 0xffff, 0x0000, 0x00000000, 0x00000000 },
+	};
+
+	if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS)
+		is_5705 = 1;
+	else
+		is_5705 = 0;
+
+	for (i = 0; reg_tbl[i].offset != 0xffff; i++) {
+		if (is_5705 && (reg_tbl[i].flags & TG3_FL_NOT_5705))
+			continue;
+
+		if (!is_5705 && (reg_tbl[i].flags & TG3_FL_5705))
+			continue;
+
+		if ((tp->tg3_flags2 & TG3_FLG2_IS_5788) &&
+		    (reg_tbl[i].flags & TG3_FL_NOT_5788))
+			continue;
+
+		offset = (u32) reg_tbl[i].offset;
+		read_mask = reg_tbl[i].read_mask;
+		write_mask = reg_tbl[i].write_mask;
+
+		/* Save the original register content */
+		save_val = tr32(offset);
+
+		/* Determine the read-only value. */
+		read_val = save_val & read_mask;
+
+		/* Write zero to the register, then make sure the read-only bits
+		 * are not changed and the read/write bits are all zeros.
+		 */
+		tw32(offset, 0);
+
+		val = tr32(offset);
+
+		/* Test the read-only and read/write bits. */
+		if (((val & read_mask) != read_val) || (val & write_mask))
+			goto out;
+
+		/* Write ones to all the bits defined by RdMask and WrMask, then
+		 * make sure the read-only bits are not changed and the
+		 * read/write bits are all ones.
+		 */
+		tw32(offset, read_mask | write_mask);
+
+		val = tr32(offset);
+
+		/* Test the read-only bits. */
+		if ((val & read_mask) != read_val)
+			goto out;
+
+		/* Test the read/write bits. */
+		if ((val & write_mask) != write_mask)
+			goto out;
+
+		tw32(offset, save_val);
+	}
+
+	return 0;
+
+out:
+	printk(KERN_ERR PFX "Register test failed at offset %x\n", offset);
+	tw32(offset, save_val);
+	return -EIO;
+}
+
 static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
 			  u64 *data)
 {
@@ -7322,6 +7535,34 @@ static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
 		etest->flags |= ETH_TEST_FL_FAILED;
 		data[1] = 1;
 	}
+	if (etest->flags & ETH_TEST_FL_OFFLINE) {
+		if (netif_running(dev))
+			tg3_netif_stop(tp);
+
+		spin_lock_irq(&tp->lock);
+		spin_lock(&tp->tx_lock);
+
+		tg3_halt(tp, RESET_KIND_SUSPEND, 1);
+		tg3_nvram_lock(tp);
+		tg3_halt_cpu(tp, RX_CPU_BASE);
+		if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
+			tg3_halt_cpu(tp, TX_CPU_BASE);
+		tg3_nvram_unlock(tp);
+
+		if (tg3_test_registers(tp) != 0) {
+			etest->flags |= ETH_TEST_FL_FAILED;
+			data[2] = 1;
+		}
+
+		tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
+		if (netif_running(dev)) {
+			tp->tg3_flags |= TG3_FLAG_INIT_COMPLETE;
+			tg3_init_hw(tp);
+			tg3_netif_start(tp);
+		}
+		spin_unlock(&tp->tx_lock);
+		spin_unlock_irq(&tp->lock);
+	}
 }
 
 static int tg3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)