drivers/net : move net drivers to drivers/net

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 996 insertions, 0 deletions

diff --git a/drivers/net/uli526x.c b/drivers/net/uli526x.c
new file mode 100644
index 0000000..1267c57
--- /dev/null
+++ b/drivers/net/uli526x.c
@@ -0,0 +1,996 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Roy Zang <tie-fei.zang@freescale.com>, Sep, 2007
+ *
+ * Description:
+ * ULI 526x Ethernet port driver.
+ * Based on the Linux driver: drivers/net/tulip/uli526x.c
+ *
+ * This 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.
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <net.h>
+#include <asm/io.h>
+#include <pci.h>
+#include <miiphy.h>
+
+/* some kernel function compatible define */
+
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI) && \
+	defined(CONFIG_ULI526X)
+
+#undef DEBUG
+
+/* Board/System/Debug information/definition */
+#define ULI_VENDOR_ID		0x10B9
+#define ULI5261_DEVICE_ID	0x5261
+#define ULI5263_DEVICE_ID	0x5263
+/* ULi M5261 ID*/
+#define PCI_ULI5261_ID		ULI5261_DEVICE_ID << 16 | ULI_VENDOR_ID
+/* ULi M5263 ID*/
+#define PCI_ULI5263_ID		ULI5263_DEVICE_ID << 16 | ULI_VENDOR_ID
+
+#define ULI526X_IO_SIZE	0x100
+#define TX_DESC_CNT	0x10		/* Allocated Tx descriptors */
+#define RX_DESC_CNT	PKTBUFSRX	/* Allocated Rx descriptors */
+#define TX_FREE_DESC_CNT	(TX_DESC_CNT - 2) /* Max TX packet count */
+#define TX_WAKE_DESC_CNT	(TX_DESC_CNT - 3) /* TX wakeup count */
+#define DESC_ALL_CNT		(TX_DESC_CNT + RX_DESC_CNT)
+#define TX_BUF_ALLOC		0x300
+#define RX_ALLOC_SIZE		PKTSIZE
+#define ULI526X_RESET		1
+#define CR0_DEFAULT		0
+#define CR6_DEFAULT		0x22200000
+#define CR7_DEFAULT		0x180c1
+#define CR15_DEFAULT		0x06		/* TxJabber RxWatchdog */
+#define TDES0_ERR_MASK		0x4302		/* TXJT, LC, EC, FUE */
+#define MAX_PACKET_SIZE		1514
+#define ULI5261_MAX_MULTICAST	14
+#define RX_COPY_SIZE		100
+#define MAX_CHECK_PACKET	0x8000
+
+#define ULI526X_10MHF		0
+#define ULI526X_100MHF		1
+#define ULI526X_10MFD		4
+#define ULI526X_100MFD		5
+#define ULI526X_AUTO		8
+
+#define ULI526X_TXTH_72		0x400000	/* TX TH 72 byte */
+#define ULI526X_TXTH_96		0x404000	/* TX TH 96 byte */
+#define ULI526X_TXTH_128	0x0000		/* TX TH 128 byte */
+#define ULI526X_TXTH_256	0x4000		/* TX TH 256 byte */
+#define ULI526X_TXTH_512	0x8000		/* TX TH 512 byte */
+#define ULI526X_TXTH_1K		0xC000		/* TX TH 1K  byte */
+
+/* CR9 definition: SROM/MII */
+#define CR9_SROM_READ		0x4800
+#define CR9_SRCS		0x1
+#define CR9_SRCLK		0x2
+#define CR9_CRDOUT		0x8
+#define SROM_DATA_0		0x0
+#define SROM_DATA_1		0x4
+#define PHY_DATA_1		0x20000
+#define PHY_DATA_0		0x00000
+#define MDCLKH			0x10000
+
+#define PHY_POWER_DOWN	0x800
+
+#define SROM_V41_CODE		0x14
+
+#define SROM_CLK_WRITE(data, ioaddr) do {			\
+	outl(data|CR9_SROM_READ|CR9_SRCS, ioaddr);		\
+	udelay(5);						\
+	outl(data|CR9_SROM_READ|CR9_SRCS|CR9_SRCLK, ioaddr);	\
+	udelay(5);						\
+	outl(data|CR9_SROM_READ|CR9_SRCS, ioaddr);		\
+	udelay(5);						\
+	} while (0)
+
+/* Structure/enum declaration */
+
+struct tx_desc {
+	u32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
+	char *tx_buf_ptr;		/* Data for us */
+	struct tx_desc *next_tx_desc;
+};
+
+struct rx_desc {
+	u32 rdes0, rdes1, rdes2, rdes3;	/* Data for the card */
+	char *rx_buf_ptr;		/* Data for us */
+	struct rx_desc *next_rx_desc;
+};
+
+struct uli526x_board_info {
+	u32 chip_id;	/* Chip vendor/Device ID */
+	pci_dev_t pdev;
+
+	long ioaddr;			/* I/O base address */
+	u32 cr0_data;
+	u32 cr5_data;
+	u32 cr6_data;
+	u32 cr7_data;
+	u32 cr15_data;
+
+	/* pointer for memory physical address */
+	dma_addr_t buf_pool_dma_ptr;	/* Tx buffer pool memory */
+	dma_addr_t buf_pool_dma_start;	/* Tx buffer pool align dword */
+	dma_addr_t desc_pool_dma_ptr;	/* descriptor pool memory */
+	dma_addr_t first_tx_desc_dma;
+	dma_addr_t first_rx_desc_dma;
+
+	/* descriptor pointer */
+	unsigned char *buf_pool_ptr;	/* Tx buffer pool memory */
+	unsigned char *buf_pool_start;	/* Tx buffer pool align dword */
+	unsigned char *desc_pool_ptr;	/* descriptor pool memory */
+	struct tx_desc *first_tx_desc;
+	struct tx_desc *tx_insert_ptr;
+	struct tx_desc *tx_remove_ptr;
+	struct rx_desc *first_rx_desc;
+	struct rx_desc *rx_ready_ptr;	/* packet come pointer */
+	unsigned long tx_packet_cnt;	/* transmitted packet count */
+
+	u16 PHY_reg4;			/* Saved Phyxcer register 4 value */
+
+	u8 media_mode;			/* user specify media mode */
+	u8 op_mode;			/* real work dedia mode */
+	u8 phy_addr;
+
+	/* NIC SROM data */
+	unsigned char srom[128];
+};
+
+enum uli526x_offsets {
+	DCR0 = 0x00, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20,
+	DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48,
+	DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70,
+	DCR15 = 0x78
+};
+
+enum uli526x_CR6_bits {
+	CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80,
+	CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000,
+	CR6_SFT = 0x200000, CR6_RXA = 0x40000000, CR6_NO_PURGE = 0x20000000
+};
+
+/* Global variable declaration -- */
+
+static unsigned char uli526x_media_mode = ULI526X_AUTO;
+
+static struct tx_desc desc_pool_array[DESC_ALL_CNT + 0x20]
+	__attribute__ ((aligned(32)));
+static char buf_pool[TX_BUF_ALLOC * TX_DESC_CNT + 4];
+
+/* For module input parameter */
+static int mode = 8;
+
+/* function declaration -- */
+static int uli526x_start_xmit(struct eth_device *dev,
+				volatile void *packet, int length);
+static const struct ethtool_ops netdev_ethtool_ops;
+static u16 read_srom_word(long, int);
+static void uli526x_descriptor_init(struct uli526x_board_info *, unsigned long);
+static void allocate_rx_buffer(struct uli526x_board_info *);
+static void update_cr6(u32, unsigned long);
+static u16 phy_read(unsigned long, u8, u8, u32);
+static u16 phy_readby_cr10(unsigned long, u8, u8);
+static void phy_write(unsigned long, u8, u8, u16, u32);
+static void phy_writeby_cr10(unsigned long, u8, u8, u16);
+static void phy_write_1bit(unsigned long, u32, u32);
+static u16 phy_read_1bit(unsigned long, u32);
+static int uli526x_rx_packet(struct eth_device *);
+static void uli526x_free_tx_pkt(struct eth_device *,
+		struct uli526x_board_info *);
+static void uli526x_reuse_buf(struct rx_desc *);
+static void uli526x_init(struct eth_device *);
+static void uli526x_set_phyxcer(struct uli526x_board_info *);
+
+
+static int uli526x_init_one(struct eth_device *, bd_t *);
+static void uli526x_disable(struct eth_device *);
+static void set_mac_addr(struct eth_device *);
+
+static struct pci_device_id uli526x_pci_tbl[] = {
+	{ ULI_VENDOR_ID, ULI5261_DEVICE_ID}, /* 5261 device */
+	{ ULI_VENDOR_ID, ULI5263_DEVICE_ID}, /* 5263 device */
+	{}
+};
+
+/* ULI526X network board routine */
+
+/*
+ *	Search ULI526X board, register it
+ */
+
+int uli526x_initialize(bd_t *bis)
+{
+	pci_dev_t devno;
+	int card_number = 0;
+	struct eth_device *dev;
+	struct uli526x_board_info *db;	/* board information structure */
+
+	u32 iobase;
+	int idx = 0;
+
+	while (1) {
+		/* Find PCI device */
+		devno = pci_find_devices(uli526x_pci_tbl, idx++);
+		if (devno < 0)
+			break;
+
+		pci_read_config_dword(devno, PCI_BASE_ADDRESS_1, &iobase);
+		iobase &= ~0xf;
+
+		dev = (struct eth_device *)malloc(sizeof *dev);
+		sprintf(dev->name, "uli526x#%d\n", card_number);
+		db = (struct uli526x_board_info *)
+			malloc(sizeof(struct uli526x_board_info));
+
+		dev->priv = db;
+		db->pdev = devno;
+		dev->iobase = iobase;
+
+		dev->init = uli526x_init_one;
+		dev->halt = uli526x_disable;
+		dev->send = uli526x_start_xmit;
+		dev->recv = uli526x_rx_packet;
+
+		/* init db */
+		db->ioaddr = dev->iobase;
+		/* get chip id */
+
+		pci_read_config_dword(devno, PCI_VENDOR_ID, &db->chip_id);
+#ifdef DEBUG
+		printf("uli526x: uli526x @0x%x\n", iobase);
+		printf("uli526x: chip_id%x\n", db->chip_id);
+#endif
+		eth_register(dev);
+		card_number++;
+		pci_write_config_byte(devno, PCI_LATENCY_TIMER, 0x20);
+		udelay(10 * 1000);
+	}
+	return card_number;
+}
+
+static int uli526x_init_one(struct eth_device *dev, bd_t *bis)
+{
+
+	struct uli526x_board_info *db = dev->priv;
+	int i;
+
+	switch (mode) {
+	case ULI526X_10MHF:
+	case ULI526X_100MHF:
+	case ULI526X_10MFD:
+	case ULI526X_100MFD:
+		uli526x_media_mode = mode;
+		break;
+	default:
+		uli526x_media_mode = ULI526X_AUTO;
+		break;
+	}
+
+	/* Allocate Tx/Rx descriptor memory */
+	db->desc_pool_ptr = (uchar *)&desc_pool_array[0];
+	db->desc_pool_dma_ptr = (dma_addr_t)&desc_pool_array[0];
+	if (db->desc_pool_ptr == NULL)
+		return 0;
+
+	db->buf_pool_ptr = &buf_pool[0];
+	db->buf_pool_dma_ptr = (dma_addr_t)&buf_pool[0];
+	if (db->buf_pool_ptr == NULL)
+		return 0;
+
+	db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
+	db->first_tx_desc_dma = db->desc_pool_dma_ptr;
+
+	db->buf_pool_start = db->buf_pool_ptr;
+	db->buf_pool_dma_start = db->buf_pool_dma_ptr;
+
+#ifdef DEBUG
+	printf("%s(): db->ioaddr= 0x%x\n",
+		__FUNCTION__, db->ioaddr);
+	printf("%s(): media_mode= 0x%x\n",
+		__FUNCTION__, uli526x_media_mode);
+	printf("%s(): db->desc_pool_ptr= 0x%x\n",
+		__FUNCTION__, db->desc_pool_ptr);
+	printf("%s(): db->desc_pool_dma_ptr= 0x%x\n",
+		__FUNCTION__, db->desc_pool_dma_ptr);
+	printf("%s(): db->buf_pool_ptr= 0x%x\n",
+		__FUNCTION__, db->buf_pool_ptr);
+	printf("%s(): db->buf_pool_dma_ptr= 0x%x\n",
+		__FUNCTION__, db->buf_pool_dma_ptr);
+#endif
+
+	/* read 64 word srom data */
+	for (i = 0; i < 64; i++)
+		((u16 *) db->srom)[i] = cpu_to_le16(read_srom_word(db->ioaddr,
+			i));
+
+	/* Set Node address */
+	if (((u16 *) db->srom)[0] == 0xffff || ((u16 *) db->srom)[0] == 0)
+	/* SROM absent, so write MAC address to ID Table */
+		set_mac_addr(dev);
+	else {		/*Exist SROM*/
+		for (i = 0; i < 6; i++)
+			dev->enetaddr[i] = db->srom[20 + i];
+	}
+#ifdef DEBUG
+	for (i = 0; i < 6; i++)
+		printf("%c%02x", i ? ':' : ' ', dev->enetaddr[i]);
+#endif
+	db->PHY_reg4 = 0x1e0;
+
+	/* system variable init */
+	db->cr6_data = CR6_DEFAULT ;
+	db->cr6_data |= ULI526X_TXTH_256;
+	db->cr0_data = CR0_DEFAULT;
+	uli526x_init(dev);
+	return 1;
+}
+
+static void uli526x_disable(struct eth_device *dev)
+{
+#ifdef DEBUG
+	printf("uli526x_disable\n");
+#endif
+	struct uli526x_board_info *db = dev->priv;
+
+	if (!((inl(db->ioaddr + DCR12)) & 0x8)) {
+		/* Reset & stop ULI526X board */
+		outl(ULI526X_RESET, db->ioaddr + DCR0);
+		udelay(5);
+		phy_write(db->ioaddr, db->phy_addr, 0, 0x8000, db->chip_id);
+
+		/* reset the board */
+		db->cr6_data &= ~(CR6_RXSC | CR6_TXSC);	/* Disable Tx/Rx */
+		update_cr6(db->cr6_data, dev->iobase);
+		outl(0, dev->iobase + DCR7);		/* Disable Interrupt */
+		outl(inl(dev->iobase + DCR5), dev->iobase + DCR5);
+	}
+}
+
+/*	Initialize ULI526X board
+ *	Reset ULI526X board
+ *	Initialize TX/Rx descriptor chain structure
+ *	Send the set-up frame
+ *	Enable Tx/Rx machine
+ */
+
+static void uli526x_init(struct eth_device *dev)
+{
+
+	struct uli526x_board_info *db = dev->priv;
+	u8	phy_tmp;
+	u16	phy_value;
+	u16 phy_reg_reset;
+
+	/* Reset M526x MAC controller */
+	outl(ULI526X_RESET, db->ioaddr + DCR0);	/* RESET MAC */
+	udelay(100);
+	outl(db->cr0_data, db->ioaddr + DCR0);
+	udelay(5);
+
+	/* Phy addr : In some boards,M5261/M5263 phy address != 1 */
+	db->phy_addr = 1;
+	db->tx_packet_cnt = 0;
+	for (phy_tmp = 0; phy_tmp < 32; phy_tmp++) {
+		/* peer add */
+		phy_value = phy_read(db->ioaddr, phy_tmp, 3, db->chip_id);
+		if (phy_value != 0xffff && phy_value != 0) {
+			db->phy_addr = phy_tmp;
+			break;
+		}
+	}
+
+#ifdef DEBUG
+	printf("%s(): db->ioaddr= 0x%x\n", __FUNCTION__, db->ioaddr);
+	printf("%s(): db->phy_addr= 0x%x\n", __FUNCTION__, db->phy_addr);
+#endif
+	if (phy_tmp == 32)
+		printf("Can not find the phy address!!!");
+
+	/* Parser SROM and media mode */
+	db->media_mode = uli526x_media_mode;
+
+	if (!(inl(db->ioaddr + DCR12) & 0x8)) {
+		/* Phyxcer capability setting */
+		phy_reg_reset = phy_read(db->ioaddr,
+			db->phy_addr, 0, db->chip_id);
+		phy_reg_reset = (phy_reg_reset | 0x8000);
+		phy_write(db->ioaddr, db->phy_addr, 0,
+			phy_reg_reset, db->chip_id);
+		udelay(500);
+
+		/* Process Phyxcer Media Mode */
+		uli526x_set_phyxcer(db);
+	}
+	/* Media Mode Process */
+	if (!(db->media_mode & ULI526X_AUTO))
+		db->op_mode = db->media_mode; 	/* Force Mode */
+
+	/* Initialize Transmit/Receive decriptor and CR3/4 */
+	uli526x_descriptor_init(db, db->ioaddr);
+
+	/* Init CR6 to program M526X operation */
+	update_cr6(db->cr6_data, db->ioaddr);
+
+	/* Init CR7, interrupt active bit */
+	db->cr7_data = CR7_DEFAULT;
+	outl(db->cr7_data, db->ioaddr + DCR7);
+
+	/* Init CR15, Tx jabber and Rx watchdog timer */
+	outl(db->cr15_data, db->ioaddr + DCR15);
+
+	/* Enable ULI526X Tx/Rx function */
+	db->cr6_data |= CR6_RXSC | CR6_TXSC;
+	update_cr6(db->cr6_data, db->ioaddr);
+	while (!(inl(db->ioaddr + DCR12) & 0x8))
+		udelay(10);
+}
+
+/*
+ *	Hardware start transmission.
+ *	Send a packet to media from the upper layer.
+ */
+
+static int uli526x_start_xmit(struct eth_device *dev,
+				volatile void *packet, int length)
+{
+	struct uli526x_board_info *db = dev->priv;
+	struct tx_desc *txptr;
+	unsigned int len = length;
+	/* Too large packet check */
+	if (len > MAX_PACKET_SIZE) {
+		printf(": big packet = %d\n", len);
+		return 0;
+	}
+
+	/* No Tx resource check, it never happen nromally */
+	if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
+		printf("No Tx resource %ld\n", db->tx_packet_cnt);
+		return 0;
+	}
+
+	/* Disable NIC interrupt */
+	outl(0, dev->iobase + DCR7);
+
+	/* transmit this packet */
+	txptr = db->tx_insert_ptr;
+	memcpy((char *)txptr->tx_buf_ptr, (char *)packet, (int)length);
+	txptr->tdes1 = cpu_to_le32(0xe1000000 | length);
+
+	/* Point to next transmit free descriptor */
+	db->tx_insert_ptr = txptr->next_tx_desc;
+
+	/* Transmit Packet Process */
+	if ((db->tx_packet_cnt < TX_DESC_CNT)) {
+		txptr->tdes0 = cpu_to_le32(0x80000000);	/* Set owner bit */
+		db->tx_packet_cnt++;			/* Ready to send */
+		outl(0x1, dev->iobase + DCR1);	/* Issue Tx polling */
+	}
+
+	/* Got ULI526X status */
+	db->cr5_data = inl(db->ioaddr + DCR5);
+	outl(db->cr5_data, db->ioaddr + DCR5);
+
+#ifdef TX_DEBUG
+	printf("%s(): length = 0x%x\n", __FUNCTION__, length);
+	printf("%s(): cr5_data=%x\n", __FUNCTION__, db->cr5_data);
+#endif
+
+	outl(db->cr7_data, dev->iobase + DCR7);
+	uli526x_free_tx_pkt(dev, db);
+
+	return length;
+}
+
+/*
+ *	Free TX resource after TX complete
+ */
+
+static void uli526x_free_tx_pkt(struct eth_device *dev,
+	struct uli526x_board_info *db)
+{
+	struct tx_desc *txptr;
+	u32 tdes0;
+
+	txptr = db->tx_remove_ptr;
+	while (db->tx_packet_cnt) {
+		tdes0 = le32_to_cpu(txptr->tdes0);
+		/* printf(DRV_NAME ": tdes0=%x\n", tdes0); */
+		if (tdes0 & 0x80000000)
+			break;
+
+		/* A packet sent completed */
+		db->tx_packet_cnt--;
+
+		if (tdes0 != 0x7fffffff) {
+#ifdef TX_DEBUG
+			printf("%s()tdes0=%x\n", __FUNCTION__, tdes0);
+#endif
+			if (tdes0 & TDES0_ERR_MASK) {
+				if (tdes0 & 0x0002) {	/* UnderRun */
+					if (!(db->cr6_data & CR6_SFT)) {
+						db->cr6_data = db->cr6_data |
+							CR6_SFT;
+						update_cr6(db->cr6_data,
+							db->ioaddr);
+					}
+				}
+			}
+		}
+
+		txptr = txptr->next_tx_desc;
+	}/* End of while */
+
+	/* Update TX remove pointer to next */
+	db->tx_remove_ptr = txptr;
+}
+
+
+/*
+ *	Receive the come packet and pass to upper layer
+ */
+
+static int uli526x_rx_packet(struct eth_device *dev)
+{
+	struct uli526x_board_info *db = dev->priv;
+	struct rx_desc *rxptr;
+	int rxlen = 0;
+	u32 rdes0;
+
+	rxptr = db->rx_ready_ptr;
+
+	rdes0 = le32_to_cpu(rxptr->rdes0);
+#ifdef RX_DEBUG
+	printf("%s(): rxptr->rdes0=%x:%x\n", __FUNCTION__, rxptr->rdes0);
+#endif
+	if (!(rdes0 & 0x80000000)) {	/* packet owner check */
+		if ((rdes0 & 0x300) != 0x300) {
+			/* A packet without First/Last flag */
+			/* reuse this buf */
+			printf("A packet without First/Last flag");
+			uli526x_reuse_buf(rxptr);
+		} else {
+			/* A packet with First/Last flag */
+			rxlen = ((rdes0 >> 16) & 0x3fff) - 4;
+#ifdef RX_DEBUG
+			printf("%s(): rxlen =%x\n", __FUNCTION__, rxlen);
+#endif
+			/* error summary bit check */
+			if (rdes0 & 0x8000) {
+				/* This is a error packet */
+				printf("Eroor: rdes0: %lx\n", rdes0);
+			}
+
+			if (!(rdes0 & 0x8000) ||
+				((db->cr6_data & CR6_PM) && (rxlen > 6))) {
+
+#ifdef RX_DEBUG
+				printf("%s(): rx_skb_ptr =%x\n",
+					__FUNCTION__, rxptr->rx_buf_ptr);
+				printf("%s(): rxlen =%x\n",
+					__FUNCTION__, rxlen);
+
+				printf("%s(): buf addr =%x\n",
+					__FUNCTION__, rxptr->rx_buf_ptr);
+				printf("%s(): rxlen =%x\n",
+					__FUNCTION__, rxlen);
+				int i;
+				for (i = 0; i < 0x20; i++)
+					printf("%s(): data[%x] =%x\n",
+					__FUNCTION__, i, rxptr->rx_buf_ptr[i]);
+#endif
+
+				NetReceive(rxptr->rx_buf_ptr, rxlen);
+				uli526x_reuse_buf(rxptr);
+
+			} else {
+				/* Reuse SKB buffer when the packet is error */
+				printf("Reuse buffer, rdes0");
+				uli526x_reuse_buf(rxptr);
+			}
+		}
+
+		rxptr = rxptr->next_rx_desc;
+	}
+
+	db->rx_ready_ptr = rxptr;
+	return rxlen;
+}
+
+/*
+ *	Reuse the RX buffer
+ */
+
+static void uli526x_reuse_buf(struct rx_desc *rxptr)
+{
+
+	if (!(rxptr->rdes0 & cpu_to_le32(0x80000000)))
+		rxptr->rdes0 = cpu_to_le32(0x80000000);
+	else
+		printf("Buffer reuse method error");
+}
+/*
+ *	Initialize transmit/Receive descriptor
+ *	Using Chain structure, and allocate Tx/Rx buffer
+ */
+
+static void uli526x_descriptor_init(struct uli526x_board_info *db,
+	unsigned long ioaddr)
+{
+	struct tx_desc *tmp_tx;
+	struct rx_desc *tmp_rx;
+	unsigned char *tmp_buf;
+	dma_addr_t tmp_tx_dma, tmp_rx_dma;
+	dma_addr_t tmp_buf_dma;
+	int i;
+	/* tx descriptor start pointer */
+	db->tx_insert_ptr = db->first_tx_desc;
+	db->tx_remove_ptr = db->first_tx_desc;
+
+	outl(db->first_tx_desc_dma, ioaddr + DCR4);     /* TX DESC address */
+
+	/* rx descriptor start pointer */
+	db->first_rx_desc = (void *)db->first_tx_desc +
+		sizeof(struct tx_desc) * TX_DESC_CNT;
+	db->first_rx_desc_dma =  db->first_tx_desc_dma +
+		sizeof(struct tx_desc) * TX_DESC_CNT;
+	db->rx_ready_ptr = db->first_rx_desc;
+	outl(db->first_rx_desc_dma, ioaddr + DCR3);	/* RX DESC address */
+#ifdef DEBUG
+	printf("%s(): db->first_tx_desc= 0x%x\n",
+		__FUNCTION__, db->first_tx_desc);
+	printf("%s(): db->first_rx_desc_dma= 0x%x\n",
+		__FUNCTION__, db->first_rx_desc_dma);
+#endif
+	/* Init Transmit chain */
+	tmp_buf = db->buf_pool_start;
+	tmp_buf_dma = db->buf_pool_dma_start;
+	tmp_tx_dma = db->first_tx_desc_dma;
+	for (tmp_tx = db->first_tx_desc, i = 0;
+			i < TX_DESC_CNT; i++, tmp_tx++) {
+		tmp_tx->tx_buf_ptr = tmp_buf;
+		tmp_tx->tdes0 = cpu_to_le32(0);
+		tmp_tx->tdes1 = cpu_to_le32(0x81000000);	/* IC, chain */
+		tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
+		tmp_tx_dma += sizeof(struct tx_desc);
+		tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
+		tmp_tx->next_tx_desc = tmp_tx + 1;
+		tmp_buf = tmp_buf + TX_BUF_ALLOC;
+		tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
+	}
+	(--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
+	tmp_tx->next_tx_desc = db->first_tx_desc;
+
+	 /* Init Receive descriptor chain */
+	tmp_rx_dma = db->first_rx_desc_dma;
+	for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT;
+			i++, tmp_rx++) {
+		tmp_rx->rdes0 = cpu_to_le32(0);
+		tmp_rx->rdes1 = cpu_to_le32(0x01000600);
+		tmp_rx_dma += sizeof(struct rx_desc);
+		tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
+		tmp_rx->next_rx_desc = tmp_rx + 1;
+	}
+	(--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
+	tmp_rx->next_rx_desc = db->first_rx_desc;
+
+	/* pre-allocate Rx buffer */
+	allocate_rx_buffer(db);
+}
+
+/*
+ *	Update CR6 value
+ *	Firstly stop ULI526X, then written value and start
+ */
+
+static void update_cr6(u32 cr6_data, unsigned long ioaddr)
+{
+
+	outl(cr6_data, ioaddr + DCR6);
+	udelay(5);
+}
+
+/*
+ *	Allocate rx buffer,
+ */
+
+static void allocate_rx_buffer(struct uli526x_board_info *db)
+{
+	int index;
+	struct rx_desc *rxptr;
+	rxptr = db->first_rx_desc;
+	u32 addr;
+
+	for (index = 0; index < RX_DESC_CNT; index++) {
+		addr = (u32)NetRxPackets[index];
+		addr += (16 - (addr & 15));
+		rxptr->rx_buf_ptr = (char *) addr;
+		rxptr->rdes2 = cpu_to_le32(addr);
+		rxptr->rdes0 = cpu_to_le32(0x80000000);
+#ifdef DEBUG
+		printf("%s(): Number 0x%x:\n", __FUNCTION__, index);
+		printf("%s(): addr 0x%x:\n", __FUNCTION__, addr);
+		printf("%s(): rxptr address = 0x%x\n", __FUNCTION__, rxptr);
+		printf("%s(): rxptr buf address = 0x%x\n", \
+			__FUNCTION__, rxptr->rx_buf_ptr);
+		printf("%s(): rdes2  = 0x%x\n", __FUNCTION__, rxptr->rdes2);
+#endif
+		rxptr = rxptr->next_rx_desc;
+	}
+}
+
+/*
+ *	Read one word data from the serial ROM
+ */
+
+static u16 read_srom_word(long ioaddr, int offset)
+{
+	int i;
+	u16 srom_data = 0;
+	long cr9_ioaddr = ioaddr + DCR9;
+
+	outl(CR9_SROM_READ, cr9_ioaddr);
+	outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
+
+	/* Send the Read Command 110b */
+	SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
+	SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
+	SROM_CLK_WRITE(SROM_DATA_0, cr9_ioaddr);
+
+	/* Send the offset */
+	for (i = 5; i >= 0; i--) {
+		srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
+		SROM_CLK_WRITE(srom_data, cr9_ioaddr);
+	}
+
+	outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
+
+	for (i = 16; i > 0; i--) {
+		outl(CR9_SROM_READ | CR9_SRCS | CR9_SRCLK, cr9_ioaddr);
+		udelay(5);
+		srom_data = (srom_data << 1) | ((inl(cr9_ioaddr) & CR9_CRDOUT)
+			? 1 : 0);
+		outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
+		udelay(5);
+	}
+
+	outl(CR9_SROM_READ, cr9_ioaddr);
+	return srom_data;
+}
+
+/*
+ *	Set 10/100 phyxcer capability
+ *	AUTO mode : phyxcer register4 is NIC capability
+ *	Force mode: phyxcer register4 is the force media
+ */
+
+static void uli526x_set_phyxcer(struct uli526x_board_info *db)
+{
+	u16 phy_reg;
+
+	/* Phyxcer capability setting */
+	phy_reg = phy_read(db->ioaddr, db->phy_addr, 4, db->chip_id) & ~0x01e0;
+
+	if (db->media_mode & ULI526X_AUTO) {
+		/* AUTO Mode */
+		phy_reg |= db->PHY_reg4;
+	} else {
+		/* Force Mode */
+		switch (db->media_mode) {
+		case ULI526X_10MHF: phy_reg |= 0x20; break;
+		case ULI526X_10MFD: phy_reg |= 0x40; break;
+		case ULI526X_100MHF: phy_reg |= 0x80; break;
+		case ULI526X_100MFD: phy_reg |= 0x100; break;
+		}
+
+	}
+
+	/* Write new capability to Phyxcer Reg4 */
+	if (!(phy_reg & 0x01e0)) {
+		phy_reg |= db->PHY_reg4;
+		db->media_mode |= ULI526X_AUTO;
+	}
+	phy_write(db->ioaddr, db->phy_addr, 4, phy_reg, db->chip_id);
+
+	/* Restart Auto-Negotiation */
+	phy_write(db->ioaddr, db->phy_addr, 0, 0x1200, db->chip_id);
+	udelay(50);
+}
+
+/*
+ *	Write a word to Phy register
+ */
+
+static void phy_write(unsigned long iobase, u8 phy_addr, u8 offset,
+	u16 phy_data, u32 chip_id)
+{
+	u16 i;
+	unsigned long ioaddr;
+
+	if (chip_id == PCI_ULI5263_ID) {
+		phy_writeby_cr10(iobase, phy_addr, offset, phy_data);
+		return;
+	}
+	/* M5261/M5263 Chip */
+	ioaddr = iobase + DCR9;
+
+	/* Send 33 synchronization clock to Phy controller */
+	for (i = 0; i < 35; i++)
+		phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
+
+	/* Send start command(01) to Phy */
+	phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
+	phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
+
+	/* Send write command(01) to Phy */
+	phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
+	phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
+
+	/* Send Phy address */
+	for (i = 0x10; i > 0; i = i >> 1)
+		phy_write_1bit(ioaddr, phy_addr & i ?
+			PHY_DATA_1 : PHY_DATA_0, chip_id);
+
+	/* Send register address */
+	for (i = 0x10; i > 0; i = i >> 1)
+		phy_write_1bit(ioaddr, offset & i ?
+			PHY_DATA_1 : PHY_DATA_0, chip_id);
+
+	/* written trasnition */
+	phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
+	phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
+
+	/* Write a word data to PHY controller */
+	for (i = 0x8000; i > 0; i >>= 1)
+		phy_write_1bit(ioaddr, phy_data & i ?
+			PHY_DATA_1 : PHY_DATA_0, chip_id);
+}
+
+/*
+ *	Read a word data from phy register
+ */
+
+static u16 phy_read(unsigned long iobase, u8 phy_addr, u8 offset, u32 chip_id)
+{
+	int i;
+	u16 phy_data;
+	unsigned long ioaddr;
+
+	if (chip_id == PCI_ULI5263_ID)
+		return phy_readby_cr10(iobase, phy_addr, offset);
+	/* M5261/M5263 Chip */
+	ioaddr = iobase + DCR9;
+
+	/* Send 33 synchronization clock to Phy controller */
+	for (i = 0; i < 35; i++)
+		phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
+
+	/* Send start command(01) to Phy */
+	phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
+	phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
+
+	/* Send read command(10) to Phy */
+	phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
+	phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
+
+	/* Send Phy address */
+	for (i = 0x10; i > 0; i = i >> 1)
+		phy_write_1bit(ioaddr, phy_addr & i ?
+			PHY_DATA_1 : PHY_DATA_0, chip_id);
+
+	/* Send register address */
+	for (i = 0x10; i > 0; i = i >> 1)
+		phy_write_1bit(ioaddr, offset & i ?
+			PHY_DATA_1 : PHY_DATA_0, chip_id);
+
+	/* Skip transition state */
+	phy_read_1bit(ioaddr, chip_id);
+
+	/* read 16bit data */
+	for (phy_data = 0, i = 0; i < 16; i++) {
+		phy_data <<= 1;
+		phy_data |= phy_read_1bit(ioaddr, chip_id);
+	}
+
+	return phy_data;
+}
+
+static u16 phy_readby_cr10(unsigned long iobase, u8 phy_addr, u8 offset)
+{
+	unsigned long ioaddr, cr10_value;
+
+	ioaddr = iobase + DCR10;
+	cr10_value = phy_addr;
+	cr10_value = (cr10_value<<5) + offset;
+	cr10_value = (cr10_value<<16) + 0x08000000;
+	outl(cr10_value, ioaddr);
+	udelay(1);
+	while (1) {
+		cr10_value = inl(ioaddr);
+		if (cr10_value & 0x10000000)
+			break;
+	}
+	return (cr10_value&0x0ffff);
+}
+
+static void phy_writeby_cr10(unsigned long iobase, u8 phy_addr,
+	u8 offset, u16 phy_data)
+{
+	unsigned long ioaddr, cr10_value;
+
+	ioaddr = iobase + DCR10;
+	cr10_value = phy_addr;
+	cr10_value = (cr10_value<<5) + offset;
+	cr10_value = (cr10_value<<16) + 0x04000000 + phy_data;
+	outl(cr10_value, ioaddr);
+	udelay(1);
+}
+/*
+ *	Write one bit data to Phy Controller
+ */
+
+static void phy_write_1bit(unsigned long ioaddr, u32 phy_data, u32 chip_id)
+{
+	outl(phy_data , ioaddr);			/* MII Clock Low */
+	udelay(1);
+	outl(phy_data  | MDCLKH, ioaddr);	/* MII Clock High */
+	udelay(1);
+	outl(phy_data , ioaddr);			/* MII Clock Low */
+	udelay(1);
+}
+
+/*
+ *	Read one bit phy data from PHY controller
+ */
+
+static u16 phy_read_1bit(unsigned long ioaddr, u32 chip_id)
+{
+	u16 phy_data;
+
+	outl(0x50000 , ioaddr);
+	udelay(1);
+	phy_data = (inl(ioaddr) >> 19) & 0x1;
+	outl(0x40000 , ioaddr);
+	udelay(1);
+
+	return phy_data;
+}
+
+/*
+ * Set MAC address to ID Table
+ */
+
+static void set_mac_addr(struct eth_device *dev)
+{
+	int i;
+	u16 addr;
+	struct uli526x_board_info *db = dev->priv;
+	outl(0x10000, db->ioaddr + DCR0);	/* Diagnosis mode */
+	/* Reset dianostic pointer port */
+	outl(0x1c0, db->ioaddr + DCR13);
+	outl(0, db->ioaddr + DCR14);	/* Clear reset port */
+	outl(0x10, db->ioaddr + DCR14);	/* Reset ID Table pointer */
+	outl(0, db->ioaddr + DCR14);	/* Clear reset port */
+	outl(0, db->ioaddr + DCR13);	/* Clear CR13 */
+	/* Select ID Table access port */
+	outl(0x1b0, db->ioaddr + DCR13);
+	/* Read MAC address from CR14 */
+	for (i = 0; i < 3; i++) {
+		addr = dev->enetaddr[2 * i] | (dev->enetaddr[2 * i + 1] << 8);
+		outl(addr, db->ioaddr + DCR14);
+	}
+	/* write end */
+	outl(0, db->ioaddr + DCR13);	/* Clear CR13 */
+	outl(0, db->ioaddr + DCR0);	/* Clear CR0 */
+	udelay(10);
+	return;
+}
+#endif