Merge commit 'origin/master' into next

1 files changed, 112 insertions, 2 deletions

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 0771eb6fc6eb..b3473401c83a 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -81,9 +81,9 @@ static const int multicast_filter_limit = 32;
 #define RTL8169_TX_TIMEOUT	(6*HZ)
 #define RTL8169_PHY_TIMEOUT	(10*HZ)
 
-#define RTL_EEPROM_SIG		cpu_to_le32(0x8129)
-#define RTL_EEPROM_SIG_MASK	cpu_to_le32(0xffff)
+#define RTL_EEPROM_SIG		0x8129
 #define RTL_EEPROM_SIG_ADDR	0x0000
+#define RTL_EEPROM_MAC_ADDR	0x0007
 
 /* write/read MMIO register */
 #define RTL_W8(reg, val8)	writeb ((val8), ioaddr + (reg))
@@ -293,6 +293,11 @@ enum rtl_register_content {
 	/* Cfg9346Bits */
 	Cfg9346_Lock	= 0x00,
 	Cfg9346_Unlock	= 0xc0,
+	Cfg9346_Program	= 0x80,		/* Programming mode */
+	Cfg9346_EECS	= 0x08,		/* Chip select */
+	Cfg9346_EESK	= 0x04,		/* Serial data clock */
+	Cfg9346_EEDI	= 0x02,		/* Data input */
+	Cfg9346_EEDO	= 0x01,		/* Data output */
 
 	/* rx_mode_bits */
 	AcceptErr	= 0x20,
@@ -305,6 +310,7 @@ enum rtl_register_content {
 	/* RxConfigBits */
 	RxCfgFIFOShift	= 13,
 	RxCfgDMAShift	=  8,
+	RxCfg9356SEL	=  6, 		/* EEPROM type: 0 = 9346, 1 = 9356 */
 
 	/* TxConfigBits */
 	TxInterFrameGapShift = 24,
@@ -1963,6 +1969,108 @@ static const struct net_device_ops rtl8169_netdev_ops = {
 
 };
 
+/* Delay between EEPROM clock transitions. Force out buffered PCI writes. */
+#define RTL_EEPROM_DELAY()	RTL_R8(Cfg9346)
+#define RTL_EEPROM_READ_CMD	6
+
+/* read 16bit word stored in EEPROM. EEPROM is addressed by words. */
+static u16 rtl_eeprom_read(void __iomem *ioaddr, int addr)
+{
+	u16 result = 0;
+	int cmd, cmd_len, i;
+
+	/* check for EEPROM address size (in bits) */
+	if (RTL_R32(RxConfig) & (1 << RxCfg9356SEL)) {
+		/* EEPROM is 93C56 */
+		cmd_len = 3 + 8; /* 3 bits for command id and 8 for address */
+		cmd = (RTL_EEPROM_READ_CMD << 8) | (addr & 0xff);
+	} else {
+		/* EEPROM is 93C46 */
+		cmd_len = 3 + 6; /* 3 bits for command id and 6 for address */
+		cmd = (RTL_EEPROM_READ_CMD << 6) | (addr & 0x3f);
+	}
+
+	/* enter programming mode */
+	RTL_W8(Cfg9346, Cfg9346_Program | Cfg9346_EECS);
+	RTL_EEPROM_DELAY();
+
+	/* write command and requested address */
+	while (cmd_len--) {
+		u8 x = Cfg9346_Program | Cfg9346_EECS;
+
+		x |= (cmd & (1 << cmd_len)) ? Cfg9346_EEDI : 0;
+
+		/* write a bit */
+		RTL_W8(Cfg9346, x);
+		RTL_EEPROM_DELAY();
+
+		/* raise clock */
+		RTL_W8(Cfg9346, x | Cfg9346_EESK);
+		RTL_EEPROM_DELAY();
+	}
+
+	/* lower clock */
+	RTL_W8(Cfg9346, Cfg9346_Program | Cfg9346_EECS);
+	RTL_EEPROM_DELAY();
+
+	/* read back 16bit value */
+	for (i = 16; i > 0; i--) {
+		/* raise clock */
+		RTL_W8(Cfg9346, Cfg9346_Program | Cfg9346_EECS | Cfg9346_EESK);
+		RTL_EEPROM_DELAY();
+
+		result <<= 1;
+		result |= (RTL_R8(Cfg9346) & Cfg9346_EEDO) ? 1 : 0;
+
+		/* lower clock */
+		RTL_W8(Cfg9346, Cfg9346_Program | Cfg9346_EECS);
+		RTL_EEPROM_DELAY();
+	}
+
+	RTL_W8(Cfg9346, Cfg9346_Program);
+	/* leave programming mode */
+	RTL_W8(Cfg9346, Cfg9346_Lock);
+
+	return result;
+}
+
+static void rtl_init_mac_address(struct rtl8169_private *tp,
+				 void __iomem *ioaddr)
+{
+	struct pci_dev *pdev = tp->pci_dev;
+	u16 x;
+	u8 mac[8];
+
+	/* read EEPROM signature */
+	x = rtl_eeprom_read(ioaddr, RTL_EEPROM_SIG_ADDR);
+
+	if (x != RTL_EEPROM_SIG) {
+		dev_info(&pdev->dev, "Missing EEPROM signature: %04x\n", x);
+		return;
+	}
+
+	/* read MAC address */
+	x = rtl_eeprom_read(ioaddr, RTL_EEPROM_MAC_ADDR);
+	mac[0] = x & 0xff;
+	mac[1] = x >> 8;
+	x = rtl_eeprom_read(ioaddr, RTL_EEPROM_MAC_ADDR + 1);
+	mac[2] = x & 0xff;
+	mac[3] = x >> 8;
+	x = rtl_eeprom_read(ioaddr, RTL_EEPROM_MAC_ADDR + 2);
+	mac[4] = x & 0xff;
+	mac[5] = x >> 8;
+
+	if (netif_msg_probe(tp)) {
+		DECLARE_MAC_BUF(buf);
+
+		dev_info(&pdev->dev, "MAC address found in EEPROM: %s\n",
+			 print_mac(buf, mac));
+	}
+
+	if (is_valid_ether_addr(mac))
+		rtl_rar_set(tp, mac);
+}
+
 static int __devinit
 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
@@ -2141,6 +2249,8 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	tp->mmio_addr = ioaddr;
 
+	rtl_init_mac_address(tp, ioaddr);
+
 	/* Get MAC address */
 	for (i = 0; i < MAC_ADDR_LEN; i++)
 		dev->dev_addr[i] = RTL_R8(MAC0 + i);