Initial revision

1 files changed, 854 insertions, 0 deletions

diff --git a/src/drivers/net/r8169.c b/src/drivers/net/r8169.c
new file mode 100644
index 00000000..83373dee
--- /dev/null
+++ b/src/drivers/net/r8169.c
@@ -0,0 +1,854 @@
+/**************************************************************************
+*    r8169.c: Etherboot device driver for the RealTek RTL-8169 Gigabit
+*    Written 2003 by Timothy Legge <tlegge@rogers.com>
+*
+*    This program is free software; you can redistribute it and/or modify
+*    it under the terms of the GNU General Public License as published by
+*    the Free Software Foundation; either version 2 of the License, or
+*    (at your option) any later version.
+*
+*    This program is distributed in the hope that it will be useful,
+*    but WITHOUT ANY WARRANTY; without even the implied warranty of
+*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*    GNU General Public License for more details.
+*
+*    You should have received a copy of the GNU General Public License
+*    along with this program; if not, write to the Free Software
+*    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*
+*    Portions of this code based on:
+*	r8169.c: A RealTek RTL-8169 Gigabit Ethernet driver 
+* 		for Linux kernel 2.4.x.
+*
+*    Written 2002 ShuChen <shuchen@realtek.com.tw>
+*	  See Linux Driver for full information
+*	
+*    Linux Driver Version 1.27a, 10.02.2002
+* 
+*    Thanks to:
+*    	Jean Chen of RealTek Semiconductor Corp. for
+*    	providing the evaluation NIC used to develop 
+*    	this driver.  RealTek's support for Etherboot 
+*    	is appreciated.
+*    	
+*    REVISION HISTORY:
+*    ================
+*
+*    v1.0	11-26-2003	timlegge	Initial port of Linux driver
+*    v1.5	01-17-2004	timlegge	Initial driver output cleanup
+*    v1.6	03-27-2004	timlegge	Additional Cleanup
+*    
+*    Indent Options: indent -kr -i8
+***************************************************************************/
+
+/* to get some global routines like printf */
+#include "etherboot.h"
+/* to get the interface to the body of the program */
+#include "nic.h"
+/* to get the PCI support functions, if this is a PCI NIC */
+#include "pci.h"
+#include "timer.h"
+
+#define drv_version "v1.6"
+#define drv_date "03-27-2004"
+
+typedef unsigned char u8;
+typedef signed char s8;
+typedef unsigned short u16;
+typedef signed short s16;
+typedef unsigned int u32;
+typedef signed int s32;
+
+#define HZ 1000
+
+static u32 ioaddr;
+
+#ifdef EDEBUG
+#define dprintf(x) printf x
+#else
+#define dprintf(x)
+#endif
+
+/* Condensed operations for readability. */
+#define virt_to_le32desc(addr)  cpu_to_le32(virt_to_bus(addr))
+#define le32desc_to_virt(addr)  bus_to_virt(le32_to_cpu(addr))
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+/* media options 
+        _10_Half = 0x01,
+        _10_Full = 0x02,
+        _100_Half = 0x04,
+        _100_Full = 0x08,
+        _1000_Full = 0x10,
+*/
+static int media = -1;
+
+#if 0
+/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
+static int max_interrupt_work = 20;
+#endif
+
+#if 0
+/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
+   The RTL chips use a 64 element hash table based on the Ethernet CRC.  */
+static int multicast_filter_limit = 32;
+#endif
+
+/* MAC address length*/
+#define MAC_ADDR_LEN	6
+
+/* max supported gigabit ethernet frame size -- must be at least (dev->mtu+14+4).*/
+#define MAX_ETH_FRAME_SIZE	1536
+
+#define TX_FIFO_THRESH 256	/* In bytes */
+
+#define RX_FIFO_THRESH	7	/* 7 means NO threshold, Rx buffer level before first PCI xfer.  */
+#define RX_DMA_BURST	6	/* Maximum PCI burst, '6' is 1024 */
+#define TX_DMA_BURST	6	/* Maximum PCI burst, '6' is 1024 */
+#define EarlyTxThld 	0x3F	/* 0x3F means NO early transmit */
+#define RxPacketMaxSize	0x0800	/* Maximum size supported is 16K-1 */
+#define InterFrameGap	0x03	/* 3 means InterFrameGap = the shortest one */
+
+#define NUM_TX_DESC	1	/* Number of Tx descriptor registers */
+#define NUM_RX_DESC	4	/* Number of Rx descriptor registers */
+#define RX_BUF_SIZE	1536	/* Rx Buffer size */
+
+#define RTL_MIN_IO_SIZE 0x80
+#define TX_TIMEOUT  (6*HZ)
+
+/* write/read MMIO register */
+#define RTL_W8(reg, val8)	writeb ((val8), ioaddr + (reg))
+#define RTL_W16(reg, val16)	writew ((val16), ioaddr + (reg))
+#define RTL_W32(reg, val32)	writel ((val32), ioaddr + (reg))
+#define RTL_R8(reg)		readb (ioaddr + (reg))
+#define RTL_R16(reg)		readw (ioaddr + (reg))
+#define RTL_R32(reg)		((unsigned long) readl (ioaddr + (reg)))
+
+enum RTL8169_registers {
+	MAC0 = 0,		/* Ethernet hardware address. */
+	MAR0 = 8,		/* Multicast filter. */
+	TxDescStartAddr = 0x20,
+	TxHDescStartAddr = 0x28,
+	FLASH = 0x30,
+	ERSR = 0x36,
+	ChipCmd = 0x37,
+	TxPoll = 0x38,
+	IntrMask = 0x3C,
+	IntrStatus = 0x3E,
+	TxConfig = 0x40,
+	RxConfig = 0x44,
+	RxMissed = 0x4C,
+	Cfg9346 = 0x50,
+	Config0 = 0x51,
+	Config1 = 0x52,
+	Config2 = 0x53,
+	Config3 = 0x54,
+	Config4 = 0x55,
+	Config5 = 0x56,
+	MultiIntr = 0x5C,
+	PHYAR = 0x60,
+	TBICSR = 0x64,
+	TBI_ANAR = 0x68,
+	TBI_LPAR = 0x6A,
+	PHYstatus = 0x6C,
+	RxMaxSize = 0xDA,
+	CPlusCmd = 0xE0,
+	RxDescStartAddr = 0xE4,
+	EarlyTxThres = 0xEC,
+	FuncEvent = 0xF0,
+	FuncEventMask = 0xF4,
+	FuncPresetState = 0xF8,
+	FuncForceEvent = 0xFC,
+};
+
+enum RTL8169_register_content {
+	/*InterruptStatusBits */
+	SYSErr = 0x8000,
+	PCSTimeout = 0x4000,
+	SWInt = 0x0100,
+	TxDescUnavail = 0x80,
+	RxFIFOOver = 0x40,
+	RxUnderrun = 0x20,
+	RxOverflow = 0x10,
+	TxErr = 0x08,
+	TxOK = 0x04,
+	RxErr = 0x02,
+	RxOK = 0x01,
+
+	/*RxStatusDesc */
+	RxRES = 0x00200000,
+	RxCRC = 0x00080000,
+	RxRUNT = 0x00100000,
+	RxRWT = 0x00400000,
+
+	/*ChipCmdBits */
+	CmdReset = 0x10,
+	CmdRxEnb = 0x08,
+	CmdTxEnb = 0x04,
+	RxBufEmpty = 0x01,
+
+	/*Cfg9346Bits */
+	Cfg9346_Lock = 0x00,
+	Cfg9346_Unlock = 0xC0,
+
+	/*rx_mode_bits */
+	AcceptErr = 0x20,
+	AcceptRunt = 0x10,
+	AcceptBroadcast = 0x08,
+	AcceptMulticast = 0x04,
+	AcceptMyPhys = 0x02,
+	AcceptAllPhys = 0x01,
+
+	/*RxConfigBits */
+	RxCfgFIFOShift = 13,
+	RxCfgDMAShift = 8,
+
+	/*TxConfigBits */
+	TxInterFrameGapShift = 24,
+	TxDMAShift = 8,		/* DMA burst value (0-7) is shift this many bits */
+
+	/*rtl8169_PHYstatus */
+	TBI_Enable = 0x80,
+	TxFlowCtrl = 0x40,
+	RxFlowCtrl = 0x20,
+	_1000bpsF = 0x10,
+	_100bps = 0x08,
+	_10bps = 0x04,
+	LinkStatus = 0x02,
+	FullDup = 0x01,
+
+	/*GIGABIT_PHY_registers */
+	PHY_CTRL_REG = 0,
+	PHY_STAT_REG = 1,
+	PHY_AUTO_NEGO_REG = 4,
+	PHY_1000_CTRL_REG = 9,
+
+	/*GIGABIT_PHY_REG_BIT */
+	PHY_Restart_Auto_Nego = 0x0200,
+	PHY_Enable_Auto_Nego = 0x1000,
+
+	/* PHY_STAT_REG = 1; */
+	PHY_Auto_Neco_Comp = 0x0020,
+
+	/* PHY_AUTO_NEGO_REG = 4; */
+	PHY_Cap_10_Half = 0x0020,
+	PHY_Cap_10_Full = 0x0040,
+	PHY_Cap_100_Half = 0x0080,
+	PHY_Cap_100_Full = 0x0100,
+
+	/* PHY_1000_CTRL_REG = 9; */
+	PHY_Cap_1000_Full = 0x0200,
+
+	PHY_Cap_Null = 0x0,
+
+	/*_MediaType*/
+	_10_Half = 0x01,
+	_10_Full = 0x02,
+	_100_Half = 0x04,
+	_100_Full = 0x08,
+	_1000_Full = 0x10,
+
+	/*_TBICSRBit*/
+	TBILinkOK = 0x02000000,
+};
+
+static struct {
+	const char *name;
+	u8 version;		/* depend on RTL8169 docs */
+	u32 RxConfigMask;	/* should clear the bits supported by this chip */
+} rtl_chip_info[] = {
+	{
+"RTL-8169", 0x00, 0xff7e1880,},};
+
+enum _DescStatusBit {
+	OWNbit = 0x80000000,
+	EORbit = 0x40000000,
+	FSbit = 0x20000000,
+	LSbit = 0x10000000,
+};
+
+struct TxDesc {
+	u32 status;
+	u32 vlan_tag;
+	u32 buf_addr;
+	u32 buf_Haddr;
+};
+
+struct RxDesc {
+	u32 status;
+	u32 vlan_tag;
+	u32 buf_addr;
+	u32 buf_Haddr;
+};
+
+/* The descriptors for this card are required to be aligned on
+256 byte boundaries.  As the align attribute does not do more than
+16 bytes of alignment it requires some extra steps.  Add 256 to the 
+size of the array and the init_ring adjusts the alignment */
+
+/* Define the TX Descriptor */
+static u8 tx_ring[NUM_TX_DESC * sizeof(struct TxDesc) + 256];
+
+/* Create a static buffer of size RX_BUF_SZ for each
+TX Descriptor.  All descriptors point to a
+part of this buffer */
+static unsigned char txb[NUM_TX_DESC * RX_BUF_SIZE];
+
+/* Define the RX Descriptor */
+static u8 rx_ring[NUM_RX_DESC * sizeof(struct TxDesc) + 256];
+
+/* Create a static buffer of size RX_BUF_SZ for each
+RX Descriptor   All descriptors point to a
+part of this buffer */
+static unsigned char rxb[NUM_RX_DESC * RX_BUF_SIZE];
+
+struct rtl8169_private {
+	void *mmio_addr;	/* memory map physical address */
+	int chipset;
+	unsigned long cur_rx;	/* Index into the Rx descriptor buffer of next Rx pkt. */
+	unsigned long cur_tx;	/* Index into the Tx descriptor buffer of next Rx pkt. */
+	unsigned char *TxDescArrays;	/* Index of Tx Descriptor buffer */
+	unsigned char *RxDescArrays;	/* Index of Rx Descriptor buffer */
+	struct TxDesc *TxDescArray;	/* Index of 256-alignment Tx Descriptor buffer */
+	struct RxDesc *RxDescArray;	/* Index of 256-alignment Rx Descriptor buffer */
+	unsigned char *RxBufferRing[NUM_RX_DESC];	/* Index of Rx Buffer array */
+	unsigned char *Tx_skbuff[NUM_TX_DESC];
+} tpx;
+
+static struct rtl8169_private *tpc;
+
+static const u16 rtl8169_intr_mask =
+    SYSErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver | TxErr |
+    TxOK | RxErr | RxOK;
+static const unsigned int rtl8169_rx_config =
+    (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
+
+void mdio_write(int RegAddr, int value)
+{
+	int i;
+
+	RTL_W32(PHYAR, 0x80000000 | (RegAddr & 0xFF) << 16 | value);
+	udelay(1000);
+
+	for (i = 2000; i > 0; i--) {
+		/* Check if the RTL8169 has completed writing to the specified MII register */
+		if (!(RTL_R32(PHYAR) & 0x80000000)) {
+			break;
+		} else {
+			udelay(100);
+		}
+	}
+}
+
+int mdio_read(int RegAddr)
+{
+	int i, value = -1;
+
+	RTL_W32(PHYAR, 0x0 | (RegAddr & 0xFF) << 16);
+	udelay(1000);
+
+	for (i = 2000; i > 0; i--) {
+		/* Check if the RTL8169 has completed retrieving data from the specified MII register */
+		if (RTL_R32(PHYAR) & 0x80000000) {
+			value = (int) (RTL_R32(PHYAR) & 0xFFFF);
+			break;
+		} else {
+			udelay(100);
+		}
+	}
+	return value;
+}
+
+static int rtl8169_init_board(struct pci_device *pdev)
+{
+	int i;
+	unsigned long rtreg_base, rtreg_len;
+	u32 tmp;
+
+	rtreg_base = pci_bar_start(pdev, PCI_BASE_ADDRESS_1);
+	rtreg_len = pci_bar_size(pdev, PCI_BASE_ADDRESS_1);
+
+	/* check for weird/broken PCI region reporting */
+	if (rtreg_len < RTL_MIN_IO_SIZE) {
+		printf("Invalid PCI region size(s), aborting\n");
+	}
+
+	adjust_pci_device(pdev);
+/*      pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM); */
+
+	/* ioremap MMIO region */
+	ioaddr = (unsigned long) ioremap(rtreg_base, rtreg_len);
+	if (ioaddr == 0)
+		return 0;
+
+	tpc->mmio_addr = &ioaddr;
+	/* Soft reset the chip. */
+	RTL_W8(ChipCmd, CmdReset);
+
+	/* Check that the chip has finished the reset. */
+	for (i = 1000; i > 0; i--)
+		if ((RTL_R8(ChipCmd) & CmdReset) == 0)
+			break;
+		else
+			udelay(10);
+
+	/* identify chip attached to board */
+	tmp = RTL_R32(TxConfig);
+	tmp = ((tmp & 0x7c000000) + ((tmp & 0x00800000) << 2)) >> 24;
+
+	for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--)
+		if (tmp == rtl_chip_info[i].version) {
+			tpc->chipset = i;
+			goto match;
+		}
+	/* if unknown chip, assume array element #0, original RTL-8169 in this case */
+	dprintf(("PCI device: unknown chip version, assuming RTL-8169\n"));
+	dprintf(("PCI device: TxConfig = 0x%hX\n",
+		 (unsigned long) RTL_R32(TxConfig)));
+	tpc->chipset = 0;
+	return 1;
+      match:
+	return 0;
+
+}
+
+/**************************************************************************
+IRQ - Wait for a frame
+***************************************************************************/
+void r8169_irq ( struct nic *nic __unused, irq_action_t action ) {
+	int intr_status = 0;
+	int interested = RxUnderrun | RxOverflow | RxFIFOOver | RxErr | RxOK;
+ 
+	switch ( action ) {
+		case DISABLE:
+		case ENABLE:
+			intr_status = RTL_R16(IntrStatus);
+			/* h/w no longer present (hotplug?) or major error, 
+				bail */
+			if (intr_status == 0xFFFF)
+				break;
+
+			intr_status = intr_status & ~interested;
+			if ( action == ENABLE )
+				intr_status = intr_status | interested;
+			RTL_W16(IntrMask, intr_status);
+			break;
+		case FORCE :
+			RTL_W8(TxPoll, (RTL_R8(TxPoll) | 0x01));
+			break;
+	}
+}
+
+/**************************************************************************
+POLL - Wait for a frame
+***************************************************************************/
+static int r8169_poll(struct nic *nic, int retreive)
+{
+	/* return true if there's an ethernet packet ready to read */
+	/* nic->packet should contain data on return */
+	/* nic->packetlen should contain length of data */
+	int cur_rx;
+	unsigned int intr_status = 0;
+	cur_rx = tpc->cur_rx;
+	if ((tpc->RxDescArray[cur_rx].status & OWNbit) == 0) {
+	         /* There is a packet ready */
+  	         if(!retreive)
+  	                 return 1;
+		intr_status = RTL_R16(IntrStatus);
+		/* h/w no longer present (hotplug?) or major error,
+			bail */
+		if (intr_status == 0xFFFF)
+			return 0;
+		RTL_W16(IntrStatus, intr_status & 
+			~(RxFIFOOver | RxOverflow | RxOK));
+
+		if (!(tpc->RxDescArray[cur_rx].status & RxRES)) {
+			nic->packetlen = (int) (tpc->RxDescArray[cur_rx].
+						status & 0x00001FFF) - 4;
+			memcpy(nic->packet, tpc->RxBufferRing[cur_rx],
+			       nic->packetlen);
+			if (cur_rx == NUM_RX_DESC - 1)
+				tpc->RxDescArray[cur_rx].status =
+				    (OWNbit | EORbit) + RX_BUF_SIZE;
+			else
+				tpc->RxDescArray[cur_rx].status =
+				    OWNbit + RX_BUF_SIZE;
+			tpc->RxDescArray[cur_rx].buf_addr =
+			    virt_to_bus(tpc->RxBufferRing[cur_rx]);
+		} else
+			printf("Error Rx");
+		/* FIXME: shouldn't I reset the status on an error */
+		cur_rx = (cur_rx + 1) % NUM_RX_DESC;
+		tpc->cur_rx = cur_rx;
+		RTL_W16(IntrStatus, intr_status & 
+			(RxFIFOOver | RxOverflow | RxOK));
+
+		return 1;
+
+	}
+	tpc->cur_rx = cur_rx;
+	/* FIXME: There is no reason to do this as cur_rx did not change */
+
+	return (0);		/* initially as this is called to flush the input */
+
+}
+
+/**************************************************************************
+TRANSMIT - Transmit a frame
+***************************************************************************/
+static void r8169_transmit(struct nic *nic, const char *d,	/* Destination */
+			   unsigned int t,	/* Type */
+			   unsigned int s,	/* size */
+			   const char *p)
+{				/* Packet */
+	/* send the packet to destination */
+
+	u16 nstype;
+	u32 to;
+	u8 *ptxb;
+	int entry = tpc->cur_tx % NUM_TX_DESC;
+
+	/* point to the current txb incase multiple tx_rings are used */
+	ptxb = tpc->Tx_skbuff[entry * MAX_ETH_FRAME_SIZE];
+	memcpy(ptxb, d, ETH_ALEN);
+	memcpy(ptxb + ETH_ALEN, nic->node_addr, ETH_ALEN);
+	nstype = htons((u16) t);
+	memcpy(ptxb + 2 * ETH_ALEN, (u8 *) & nstype, 2);
+	memcpy(ptxb + ETH_HLEN, p, s);
+	s += ETH_HLEN;
+	s &= 0x0FFF;
+	while (s < ETH_ZLEN)
+		ptxb[s++] = '\0';
+
+	tpc->TxDescArray[entry].buf_addr = virt_to_bus(ptxb);
+	if (entry != (NUM_TX_DESC - 1))
+		tpc->TxDescArray[entry].status =
+		    (OWNbit | FSbit | LSbit) | ((s > ETH_ZLEN) ? s :
+						ETH_ZLEN);
+	else
+		tpc->TxDescArray[entry].status =
+		    (OWNbit | EORbit | FSbit | LSbit) | ((s > ETH_ZLEN) ? s
+							 : ETH_ZLEN);
+	RTL_W8(TxPoll, 0x40);	/* set polling bit */
+
+	tpc->cur_tx++;
+	to = currticks() + TX_TIMEOUT;
+	while ((tpc->TxDescArray[entry].status & OWNbit) && (currticks() < to));	/* wait */
+
+	if (currticks() >= to) {
+		printf("TX Time Out");
+	}
+}
+
+static void rtl8169_set_rx_mode(struct nic *nic __unused)
+{
+	u32 mc_filter[2];	/* Multicast hash filter */
+	int rx_mode;
+	u32 tmp = 0;
+
+	/* IFF_ALLMULTI */
+	/* Too many to filter perfectly -- accept all multicasts. */
+	rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
+	mc_filter[1] = mc_filter[0] = 0xffffffff;
+
+	tmp =
+	    rtl8169_rx_config | rx_mode | (RTL_R32(RxConfig) &
+					   rtl_chip_info[tpc->chipset].
+					   RxConfigMask);
+
+	RTL_W32(RxConfig, tmp);
+	RTL_W32(MAR0 + 0, mc_filter[0]);
+	RTL_W32(MAR0 + 4, mc_filter[1]);
+}
+static void rtl8169_hw_start(struct nic *nic)
+{
+	u32 i;
+
+	/* Soft reset the chip. */
+	RTL_W8(ChipCmd, CmdReset);
+
+	/* Check that the chip has finished the reset. */
+	for (i = 1000; i > 0; i--) {
+		if ((RTL_R8(ChipCmd) & CmdReset) == 0)
+			break;
+		else
+			udelay(10);
+	}
+
+	RTL_W8(Cfg9346, Cfg9346_Unlock);
+	RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
+	RTL_W8(EarlyTxThres, EarlyTxThld);
+
+	/* For gigabit rtl8169 */
+	RTL_W16(RxMaxSize, RxPacketMaxSize);
+
+	/* Set Rx Config register */
+	i = rtl8169_rx_config | (RTL_R32(RxConfig) &
+				 rtl_chip_info[tpc->chipset].RxConfigMask);
+	RTL_W32(RxConfig, i);
+
+	/* Set DMA burst size and Interframe Gap Time */
+	RTL_W32(TxConfig,
+		(TX_DMA_BURST << TxDMAShift) | (InterFrameGap <<
+						TxInterFrameGapShift));
+
+
+	tpc->cur_rx = 0;
+
+	RTL_W32(TxDescStartAddr, virt_to_le32desc(tpc->TxDescArray));
+	RTL_W32(RxDescStartAddr, virt_to_le32desc(tpc->RxDescArray));
+	RTL_W8(Cfg9346, Cfg9346_Lock);
+	udelay(10);
+
+	RTL_W32(RxMissed, 0);
+
+	rtl8169_set_rx_mode(nic);
+
+	/* no early-rx interrupts */
+	RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
+}
+
+static void rtl8169_init_ring(struct nic *nic __unused)
+{
+	int i;
+
+	tpc->cur_rx = 0;
+	tpc->cur_tx = 0;
+	memset(tpc->TxDescArray, 0x0, NUM_TX_DESC * sizeof(struct TxDesc));
+	memset(tpc->RxDescArray, 0x0, NUM_RX_DESC * sizeof(struct RxDesc));
+
+	for (i = 0; i < NUM_TX_DESC; i++) {
+		tpc->Tx_skbuff[i] = &txb[i];
+	}
+
+	for (i = 0; i < NUM_RX_DESC; i++) {
+		if (i == (NUM_RX_DESC - 1))
+			tpc->RxDescArray[i].status =
+			    (OWNbit | EORbit) + RX_BUF_SIZE;
+		else
+			tpc->RxDescArray[i].status = OWNbit + RX_BUF_SIZE;
+
+		tpc->RxBufferRing[i] = &rxb[i * RX_BUF_SIZE];
+		tpc->RxDescArray[i].buf_addr =
+		    virt_to_bus(tpc->RxBufferRing[i]);
+	}
+}
+
+/**************************************************************************
+RESET - Finish setting up the ethernet interface
+***************************************************************************/
+static void r8169_reset(struct nic *nic)
+{
+	int i;
+	u8 diff;
+	u32 TxPhyAddr, RxPhyAddr;
+
+	tpc->TxDescArrays = tx_ring;
+	if (tpc->TxDescArrays == 0)
+		printf("Allot Error");
+	/* Tx Desscriptor needs 256 bytes alignment; */
+	TxPhyAddr = virt_to_bus(tpc->TxDescArrays);
+	diff = 256 - (TxPhyAddr - ((TxPhyAddr >> 8) << 8));
+	TxPhyAddr += diff;
+	tpc->TxDescArray = (struct TxDesc *) (tpc->TxDescArrays + diff);
+
+	tpc->RxDescArrays = rx_ring;
+	/* Rx Desscriptor needs 256 bytes alignment; */
+	RxPhyAddr = virt_to_bus(tpc->RxDescArrays);
+	diff = 256 - (RxPhyAddr - ((RxPhyAddr >> 8) << 8));
+	RxPhyAddr += diff;
+	tpc->RxDescArray = (struct RxDesc *) (tpc->RxDescArrays + diff);
+
+	if (tpc->TxDescArrays == NULL || tpc->RxDescArrays == NULL) {
+		printf("Allocate RxDescArray or TxDescArray failed\n");
+		return;
+	}
+
+	rtl8169_init_ring(nic);
+	rtl8169_hw_start(nic);
+	/* Construct a perfect filter frame with the mac address as first match
+	 * and broadcast for all others */
+	for (i = 0; i < 192; i++)
+		txb[i] = 0xFF;
+
+	txb[0] = nic->node_addr[0];
+	txb[1] = nic->node_addr[1];
+	txb[2] = nic->node_addr[2];
+	txb[3] = nic->node_addr[3];
+	txb[4] = nic->node_addr[4];
+	txb[5] = nic->node_addr[5];
+}
+
+/**************************************************************************
+DISABLE - Turn off ethernet interface
+***************************************************************************/
+static void r8169_disable(struct dev *dev __unused)
+{
+	int i;
+	/* Stop the chip's Tx and Rx DMA processes. */
+	RTL_W8(ChipCmd, 0x00);
+
+	/* Disable interrupts by clearing the interrupt mask. */
+	RTL_W16(IntrMask, 0x0000);
+
+	RTL_W32(RxMissed, 0);
+
+	tpc->TxDescArrays = NULL;
+	tpc->RxDescArrays = NULL;
+	tpc->TxDescArray = NULL;
+	tpc->RxDescArray = NULL;
+	for (i = 0; i < NUM_RX_DESC; i++) {
+		tpc->RxBufferRing[i] = NULL;
+	}
+}
+
+/**************************************************************************
+PROBE - Look for an adapter, this routine's visible to the outside
+***************************************************************************/
+
+#define board_found 1
+#define valid_link 0
+static int r8169_probe(struct dev *dev, struct pci_device *pci)
+{
+	struct nic *nic = (struct nic *) dev;
+	static int board_idx = -1;
+	static int printed_version = 0;
+	int i, rc;
+	int option = -1, Cap10_100 = 0, Cap1000 = 0;
+
+	printf("r8169.c: Found %s, Vendor=%hX Device=%hX\n",
+	       pci->name, pci->vendor, pci->dev_id);
+
+	board_idx++;
+
+	printed_version = 1;
+
+	/* point to private storage */
+	tpc = &tpx;
+
+	rc = rtl8169_init_board(pci);	/* Return code is meaningless */
+
+	/* Get MAC address.  FIXME: read EEPROM */
+	for (i = 0; i < MAC_ADDR_LEN; i++)
+		nic->node_addr[i] = RTL_R8(MAC0 + i);
+
+	dprintf(("%s: Identified chip type is '%s'.\n", pci->name,
+		 rtl_chip_info[tpc->chipset].name));
+	/* Print out some hardware info */
+	printf("%s: %! at ioaddr %hX, ", pci->name, nic->node_addr,
+	       ioaddr);
+
+	/* if TBI is not endbled */
+	if (!(RTL_R8(PHYstatus) & TBI_Enable)) {
+		int val = mdio_read(PHY_AUTO_NEGO_REG);
+
+		option = media;
+		/* Force RTL8169 in 10/100/1000 Full/Half mode. */
+		if (option > 0) {
+			printf(" Force-mode Enabled.\n");
+			Cap10_100 = 0, Cap1000 = 0;
+			switch (option) {
+			case _10_Half:
+				Cap10_100 = PHY_Cap_10_Half;
+				Cap1000 = PHY_Cap_Null;
+				break;
+			case _10_Full:
+				Cap10_100 = PHY_Cap_10_Full;
+				Cap1000 = PHY_Cap_Null;
+				break;
+			case _100_Half:
+				Cap10_100 = PHY_Cap_100_Half;
+				Cap1000 = PHY_Cap_Null;
+				break;
+			case _100_Full:
+				Cap10_100 = PHY_Cap_100_Full;
+				Cap1000 = PHY_Cap_Null;
+				break;
+			case _1000_Full:
+				Cap10_100 = PHY_Cap_Null;
+				Cap1000 = PHY_Cap_1000_Full;
+				break;
+			default:
+				break;
+			}
+			/* leave PHY_AUTO_NEGO_REG bit4:0 unchanged */
+			mdio_write(PHY_AUTO_NEGO_REG,
+				   Cap10_100 | (val & 0x1F));
+			mdio_write(PHY_1000_CTRL_REG, Cap1000);
+		} else {
+			dprintf(("Auto-negotiation Enabled.\n",
+				 pci->name));
+
+			/* enable 10/100 Full/Half Mode, leave PHY_AUTO_NEGO_REG bit4:0 unchanged */
+			mdio_write(PHY_AUTO_NEGO_REG,
+				   PHY_Cap_10_Half | PHY_Cap_10_Full |
+				   PHY_Cap_100_Half | PHY_Cap_100_Full |
+				   (val & 0x1F));
+
+			/* enable 1000 Full Mode */
+			mdio_write(PHY_1000_CTRL_REG, PHY_Cap_1000_Full);
+
+		}
+
+		/* Enable auto-negotiation and restart auto-nigotiation */
+		mdio_write(PHY_CTRL_REG,
+			   PHY_Enable_Auto_Nego | PHY_Restart_Auto_Nego);
+		udelay(100);
+
+		/* wait for auto-negotiation process */
+		for (i = 10000; i > 0; i--) {
+			/* Check if auto-negotiation complete */
+			if (mdio_read(PHY_STAT_REG) & PHY_Auto_Neco_Comp) {
+				udelay(100);
+				option = RTL_R8(PHYstatus);
+				if (option & _1000bpsF) {
+					printf
+					    ("1000Mbps Full-duplex operation.\n");
+				} else {
+					printf
+					    ("%sMbps %s-duplex operation.\n",
+					     (option & _100bps) ? "100" :
+					     "10",
+					     (option & FullDup) ? "Full" :
+					     "Half");
+				}
+				break;
+			} else {
+				udelay(100);
+			}
+		}		/* end for-loop to wait for auto-negotiation process */
+
+	} else {
+		udelay(100);
+		printf
+		    ("%s: 1000Mbps Full-duplex operation, TBI Link %s!\n",
+		     pci->name,
+		     (RTL_R32(TBICSR) & TBILinkOK) ? "OK" : "Failed");
+
+	}
+
+	r8169_reset(nic);
+	/* point to NIC specific routines */
+	dev->disable = r8169_disable;
+	nic->poll = r8169_poll;
+	nic->transmit = r8169_transmit;
+	nic->irqno = pci->irq;
+	nic->irq = r8169_irq;
+	nic->ioaddr = ioaddr;
+	return 1;
+
+}
+
+static struct pci_id r8169_nics[] = {
+	PCI_ROM(0x10ec, 0x8169, "r8169", "RealTek RTL8169 Gigabit Ethernet"),
+};
+
+static struct pci_driver r8169_driver __pci_driver = {
+	.type = NIC_DRIVER,
+	.name = "r8169/PCI",
+	.probe = r8169_probe,
+	.ids = r8169_nics,
+	.id_count = sizeof(r8169_nics) / sizeof(r8169_nics[0]),
+	.class = 0,
+};