[BNX2]: Add ethtool -d support

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

drivers/net/bnx2.c

@@ -4540,6 +4540,64 @@ bnx2_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
 	info->fw_version[5] = 0;
 }
 
+#define BNX2_REGDUMP_LEN		(32 * 1024)
+
+static int
+bnx2_get_regs_len(struct net_device *dev)
+{
+	return BNX2_REGDUMP_LEN;
+}
+
+static void
+bnx2_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
+{
+	u32 *p = _p, i, offset;
+	u8 *orig_p = _p;
+	struct bnx2 *bp = netdev_priv(dev);
+	u32 reg_boundaries[] = { 0x0000, 0x0098, 0x0400, 0x045c,
+				 0x0800, 0x0880, 0x0c00, 0x0c10,
+				 0x0c30, 0x0d08, 0x1000, 0x101c,
+				 0x1040, 0x1048, 0x1080, 0x10a4,
+				 0x1400, 0x1490, 0x1498, 0x14f0,
+				 0x1500, 0x155c, 0x1580, 0x15dc,
+				 0x1600, 0x1658, 0x1680, 0x16d8,
+				 0x1800, 0x1820, 0x1840, 0x1854,
+				 0x1880, 0x1894, 0x1900, 0x1984,
+				 0x1c00, 0x1c0c, 0x1c40, 0x1c54,
+				 0x1c80, 0x1c94, 0x1d00, 0x1d84,
+				 0x2000, 0x2030, 0x23c0, 0x2400,
+				 0x2800, 0x2820, 0x2830, 0x2850,
+				 0x2b40, 0x2c10, 0x2fc0, 0x3058,
+				 0x3c00, 0x3c94, 0x4000, 0x4010,
+				 0x4080, 0x4090, 0x43c0, 0x4458,
+				 0x4c00, 0x4c18, 0x4c40, 0x4c54,
+				 0x4fc0, 0x5010, 0x53c0, 0x5444,
+				 0x5c00, 0x5c18, 0x5c80, 0x5c90,
+				 0x5fc0, 0x6000, 0x6400, 0x6428,
+				 0x6800, 0x6848, 0x684c, 0x6860,
+				 0x6888, 0x6910, 0x8000 };
+
+	regs->version = 0;
+
+	memset(p, 0, BNX2_REGDUMP_LEN);
+
+	if (!netif_running(bp->dev))
+		return;
+
+	i = 0;
+	offset = reg_boundaries[0];
+	p += offset;
+	while (offset < BNX2_REGDUMP_LEN) {
+		*p++ = REG_RD(bp, offset);
+		offset += 4;
+		if (offset == reg_boundaries[i + 1]) {
+			offset = reg_boundaries[i + 2];
+			p = (u32 *) (orig_p + offset);
+			i += 2;
+		}
+	}
+}
+
 static void
 bnx2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 {
@@ -5106,6 +5164,8 @@ static struct ethtool_ops bnx2_ethtool_ops = {
 	.get_settings		= bnx2_get_settings,
 	.set_settings		= bnx2_set_settings,
 	.get_drvinfo		= bnx2_get_drvinfo,
+	.get_regs_len		= bnx2_get_regs_len,
+	.get_regs		= bnx2_get_regs,
 	.get_wol		= bnx2_get_wol,
 	.set_wol		= bnx2_set_wol,
 	.nway_reset		= bnx2_nway_reset,