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linuxdebug/drivers/net/ethernet/dec/tulip/uli526x.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define DRV_NAME "uli526x"
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/dma-mapping.h>
#include <linux/bitops.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <linux/uaccess.h>
#define uw32(reg, val) iowrite32(val, ioaddr + (reg))
#define ur32(reg) ioread32(ioaddr + (reg))
/* Board/System/Debug information/definition ---------------- */
#define PCI_ULI5261_ID 0x526110B9 /* ULi M5261 ID*/
#define PCI_ULI5263_ID 0x526310B9 /* ULi M5263 ID*/
#define ULI526X_IO_SIZE 0x100
#define TX_DESC_CNT 0x20 /* Allocated Tx descriptors */
#define RX_DESC_CNT 0x30 /* 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 0x600
#define RX_ALLOC_SIZE 0x620
#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 */
#define ULI526X_TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
#define ULI526X_TX_TIMEOUT ((16*HZ)/2) /* tx packet time-out time 8 s" */
#define ULI526X_TX_KICK (4*HZ/2) /* tx packet Kick-out time 2 s" */
#define ULI526X_DBUG(dbug_now, msg, value) \
do { \
if (uli526x_debug || (dbug_now)) \
pr_err("%s %lx\n", (msg), (long) (value)); \
} while (0)
#define SHOW_MEDIA_TYPE(mode) \
pr_err("Change Speed to %sMhz %s duplex\n", \
mode & 1 ? "100" : "10", \
mode & 4 ? "full" : "half");
/* 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
/* Structure/enum declaration ------------------------------- */
struct tx_desc {
__le32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
char *tx_buf_ptr; /* Data for us */
struct tx_desc *next_tx_desc;
} __attribute__(( aligned(32) ));
struct rx_desc {
__le32 rdes0, rdes1, rdes2, rdes3; /* Data for the card */
struct sk_buff *rx_skb_ptr; /* Data for us */
struct rx_desc *next_rx_desc;
} __attribute__(( aligned(32) ));
struct uli526x_board_info {
struct uli_phy_ops {
void (*write)(struct uli526x_board_info *, u8, u8, u16);
u16 (*read)(struct uli526x_board_info *, u8, u8);
} phy;
struct net_device *next_dev; /* next device */
struct pci_dev *pdev; /* PCI device */
spinlock_t lock;
void __iomem *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_insert_ptr;
struct rx_desc *rx_ready_ptr; /* packet come pointer */
unsigned long tx_packet_cnt; /* transmitted packet count */
unsigned long rx_avail_cnt; /* available rx descriptor count */
unsigned long interval_rx_cnt; /* rx packet count a callback time */
u16 dbug_cnt;
u16 NIC_capability; /* NIC media capability */
u16 PHY_reg4; /* Saved Phyxcer register 4 value */
u8 media_mode; /* user specify media mode */
u8 op_mode; /* real work media mode */
u8 phy_addr;
u8 link_failed; /* Ever link failed */
u8 wait_reset; /* Hardware failed, need to reset */
struct timer_list timer;
/* Driver defined statistic counter */
unsigned long tx_fifo_underrun;
unsigned long tx_loss_carrier;
unsigned long tx_no_carrier;
unsigned long tx_late_collision;
unsigned long tx_excessive_collision;
unsigned long tx_jabber_timeout;
unsigned long reset_count;
unsigned long reset_cr8;
unsigned long reset_fatal;
unsigned long reset_TXtimeout;
/* NIC SROM data */
unsigned char srom[128];
u8 init;
};
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 int uli526x_debug;
static unsigned char uli526x_media_mode = ULI526X_AUTO;
static u32 uli526x_cr6_user_set;
/* For module input parameter */
static int debug;
static u32 cr6set;
static int mode = 8;
/* function declaration ------------------------------------- */
static int uli526x_open(struct net_device *);
static netdev_tx_t uli526x_start_xmit(struct sk_buff *,
struct net_device *);
static int uli526x_stop(struct net_device *);
static void uli526x_set_filter_mode(struct net_device *);
static const struct ethtool_ops netdev_ethtool_ops;
static u16 read_srom_word(struct uli526x_board_info *, int);
static irqreturn_t uli526x_interrupt(int, void *);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void uli526x_poll(struct net_device *dev);
#endif
static void uli526x_descriptor_init(struct net_device *, void __iomem *);
static void allocate_rx_buffer(struct net_device *);
static void update_cr6(u32, void __iomem *);
static void send_filter_frame(struct net_device *, int);
static u16 phy_readby_cr9(struct uli526x_board_info *, u8, u8);
static u16 phy_readby_cr10(struct uli526x_board_info *, u8, u8);
static void phy_writeby_cr9(struct uli526x_board_info *, u8, u8, u16);
static void phy_writeby_cr10(struct uli526x_board_info *, u8, u8, u16);
static void phy_write_1bit(struct uli526x_board_info *db, u32);
static u16 phy_read_1bit(struct uli526x_board_info *db);
static u8 uli526x_sense_speed(struct uli526x_board_info *);
static void uli526x_process_mode(struct uli526x_board_info *);
static void uli526x_timer(struct timer_list *t);
static void uli526x_rx_packet(struct net_device *, struct uli526x_board_info *);
static void uli526x_free_tx_pkt(struct net_device *, struct uli526x_board_info *);
static void uli526x_reuse_skb(struct uli526x_board_info *, struct sk_buff *);
static void uli526x_dynamic_reset(struct net_device *);
static void uli526x_free_rxbuffer(struct uli526x_board_info *);
static void uli526x_init(struct net_device *);
static void uli526x_set_phyxcer(struct uli526x_board_info *);
static void srom_clk_write(struct uli526x_board_info *db, u32 data)
{
void __iomem *ioaddr = db->ioaddr;
uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS);
udelay(5);
uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
udelay(5);
uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS);
udelay(5);
}
/* ULI526X network board routine ---------------------------- */
static const struct net_device_ops netdev_ops = {
.ndo_open = uli526x_open,
.ndo_stop = uli526x_stop,
.ndo_start_xmit = uli526x_start_xmit,
.ndo_set_rx_mode = uli526x_set_filter_mode,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = uli526x_poll,
#endif
};
/*
* Search ULI526X board, allocate space and register it
*/
static int uli526x_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct uli526x_board_info *db; /* board information structure */
struct net_device *dev;
void __iomem *ioaddr;
u8 addr[ETH_ALEN];
int i, err;
ULI526X_DBUG(0, "uli526x_init_one()", 0);
/* Init network device */
dev = alloc_etherdev(sizeof(*db));
if (dev == NULL)
return -ENOMEM;
SET_NETDEV_DEV(dev, &pdev->dev);
if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
pr_warn("32-bit PCI DMA not available\n");
err = -ENODEV;
goto err_out_free;
}
/* Enable Master/IO access, Disable memory access */
err = pci_enable_device(pdev);
if (err)
goto err_out_free;
if (!pci_resource_start(pdev, 0)) {
pr_err("I/O base is zero\n");
err = -ENODEV;
goto err_out_disable;
}
if (pci_resource_len(pdev, 0) < (ULI526X_IO_SIZE) ) {
pr_err("Allocated I/O size too small\n");
err = -ENODEV;
goto err_out_disable;
}
err = pci_request_regions(pdev, DRV_NAME);
if (err < 0) {
pr_err("Failed to request PCI regions\n");
goto err_out_disable;
}
/* Init system & device */
db = netdev_priv(dev);
/* Allocate Tx/Rx descriptor memory */
err = -ENOMEM;
db->desc_pool_ptr = dma_alloc_coherent(&pdev->dev,
sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
&db->desc_pool_dma_ptr, GFP_KERNEL);
if (!db->desc_pool_ptr)
goto err_out_release;
db->buf_pool_ptr = dma_alloc_coherent(&pdev->dev,
TX_BUF_ALLOC * TX_DESC_CNT + 4,
&db->buf_pool_dma_ptr, GFP_KERNEL);
if (!db->buf_pool_ptr)
goto err_out_free_tx_desc;
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;
switch (ent->driver_data) {
case PCI_ULI5263_ID:
db->phy.write = phy_writeby_cr10;
db->phy.read = phy_readby_cr10;
break;
default:
db->phy.write = phy_writeby_cr9;
db->phy.read = phy_readby_cr9;
break;
}
/* IO region. */
ioaddr = pci_iomap(pdev, 0, 0);
if (!ioaddr)
goto err_out_free_tx_buf;
db->ioaddr = ioaddr;
db->pdev = pdev;
db->init = 1;
pci_set_drvdata(pdev, dev);
/* Register some necessary functions */
dev->netdev_ops = &netdev_ops;
dev->ethtool_ops = &netdev_ethtool_ops;
spin_lock_init(&db->lock);
/* read 64 word srom data */
for (i = 0; i < 64; i++)
((__le16 *) db->srom)[i] = cpu_to_le16(read_srom_word(db, i));
/* Set Node address */
if(((u16 *) db->srom)[0] == 0xffff || ((u16 *) db->srom)[0] == 0) /* SROM absent, so read MAC address from ID Table */
{
uw32(DCR0, 0x10000); //Diagnosis mode
uw32(DCR13, 0x1c0); //Reset dianostic pointer port
uw32(DCR14, 0); //Clear reset port
uw32(DCR14, 0x10); //Reset ID Table pointer
uw32(DCR14, 0); //Clear reset port
uw32(DCR13, 0); //Clear CR13
uw32(DCR13, 0x1b0); //Select ID Table access port
//Read MAC address from CR14
for (i = 0; i < 6; i++)
addr[i] = ur32(DCR14);
//Read end
uw32(DCR13, 0); //Clear CR13
uw32(DCR0, 0); //Clear CR0
udelay(10);
}
else /*Exist SROM*/
{
for (i = 0; i < 6; i++)
addr[i] = db->srom[20 + i];
}
eth_hw_addr_set(dev, addr);
err = register_netdev (dev);
if (err)
goto err_out_unmap;
netdev_info(dev, "ULi M%04lx at pci%s, %pM, irq %d\n",
ent->driver_data >> 16, pci_name(pdev),
dev->dev_addr, pdev->irq);
pci_set_master(pdev);
return 0;
err_out_unmap:
pci_iounmap(pdev, db->ioaddr);
err_out_free_tx_buf:
dma_free_coherent(&pdev->dev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
db->buf_pool_ptr, db->buf_pool_dma_ptr);
err_out_free_tx_desc:
dma_free_coherent(&pdev->dev,
sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
db->desc_pool_ptr, db->desc_pool_dma_ptr);
err_out_release:
pci_release_regions(pdev);
err_out_disable:
pci_disable_device(pdev);
err_out_free:
free_netdev(dev);
return err;
}
static void uli526x_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct uli526x_board_info *db = netdev_priv(dev);
unregister_netdev(dev);
pci_iounmap(pdev, db->ioaddr);
dma_free_coherent(&db->pdev->dev,
sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
db->desc_pool_ptr, db->desc_pool_dma_ptr);
dma_free_coherent(&db->pdev->dev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
db->buf_pool_ptr, db->buf_pool_dma_ptr);
pci_release_regions(pdev);
pci_disable_device(pdev);
free_netdev(dev);
}
/*
* Open the interface.
* The interface is opened whenever "ifconfig" activates it.
*/
static int uli526x_open(struct net_device *dev)
{
int ret;
struct uli526x_board_info *db = netdev_priv(dev);
ULI526X_DBUG(0, "uli526x_open", 0);
/* system variable init */
db->cr6_data = CR6_DEFAULT | uli526x_cr6_user_set;
db->tx_packet_cnt = 0;
db->rx_avail_cnt = 0;
db->link_failed = 1;
netif_carrier_off(dev);
db->wait_reset = 0;
db->NIC_capability = 0xf; /* All capability*/
db->PHY_reg4 = 0x1e0;
/* CR6 operation mode decision */
db->cr6_data |= ULI526X_TXTH_256;
db->cr0_data = CR0_DEFAULT;
/* Initialize ULI526X board */
uli526x_init(dev);
ret = request_irq(db->pdev->irq, uli526x_interrupt, IRQF_SHARED,
dev->name, dev);
if (ret)
return ret;
/* Active System Interface */
netif_wake_queue(dev);
/* set and active a timer process */
timer_setup(&db->timer, uli526x_timer, 0);
db->timer.expires = ULI526X_TIMER_WUT + HZ * 2;
add_timer(&db->timer);
return 0;
}
/* 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 net_device *dev)
{
struct uli526x_board_info *db = netdev_priv(dev);
struct uli_phy_ops *phy = &db->phy;
void __iomem *ioaddr = db->ioaddr;
u8 phy_tmp;
u8 timeout;
u16 phy_reg_reset;
ULI526X_DBUG(0, "uli526x_init()", 0);
/* Reset M526x MAC controller */
uw32(DCR0, ULI526X_RESET); /* RESET MAC */
udelay(100);
uw32(DCR0, db->cr0_data);
udelay(5);
/* Phy addr : In some boards,M5261/M5263 phy address != 1 */
db->phy_addr = 1;
for (phy_tmp = 0; phy_tmp < 32; phy_tmp++) {
u16 phy_value;
phy_value = phy->read(db, phy_tmp, 3); //peer add
if (phy_value != 0xffff && phy_value != 0) {
db->phy_addr = phy_tmp;
break;
}
}
if (phy_tmp == 32)
pr_warn("Can not find the phy address!!!\n");
/* Parser SROM and media mode */
db->media_mode = uli526x_media_mode;
/* phyxcer capability setting */
phy_reg_reset = phy->read(db, db->phy_addr, 0);
phy_reg_reset = (phy_reg_reset | 0x8000);
phy->write(db, db->phy_addr, 0, phy_reg_reset);
/* See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management
* functions") or phy data sheet for details on phy reset
*/
udelay(500);
timeout = 10;
while (timeout-- && phy->read(db, db->phy_addr, 0) & 0x8000)
udelay(100);
/* 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 descriptor and CR3/4 */
uli526x_descriptor_init(dev, ioaddr);
/* Init CR6 to program M526X operation */
update_cr6(db->cr6_data, ioaddr);
/* Send setup frame */
send_filter_frame(dev, netdev_mc_count(dev)); /* M5261/M5263 */
/* Init CR7, interrupt active bit */
db->cr7_data = CR7_DEFAULT;
uw32(DCR7, db->cr7_data);
/* Init CR15, Tx jabber and Rx watchdog timer */
uw32(DCR15, db->cr15_data);
/* Enable ULI526X Tx/Rx function */
db->cr6_data |= CR6_RXSC | CR6_TXSC;
update_cr6(db->cr6_data, ioaddr);
}
/*
* Hardware start transmission.
* Send a packet to media from the upper layer.
*/
static netdev_tx_t uli526x_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct uli526x_board_info *db = netdev_priv(dev);
void __iomem *ioaddr = db->ioaddr;
struct tx_desc *txptr;
unsigned long flags;
ULI526X_DBUG(0, "uli526x_start_xmit", 0);
/* Resource flag check */
netif_stop_queue(dev);
/* Too large packet check */
if (skb->len > MAX_PACKET_SIZE) {
netdev_err(dev, "big packet = %d\n", (u16)skb->len);
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
spin_lock_irqsave(&db->lock, flags);
/* No Tx resource check, it never happen nromally */
if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
spin_unlock_irqrestore(&db->lock, flags);
netdev_err(dev, "No Tx resource %ld\n", db->tx_packet_cnt);
return NETDEV_TX_BUSY;
}
/* Disable NIC interrupt */
uw32(DCR7, 0);
/* transmit this packet */
txptr = db->tx_insert_ptr;
skb_copy_from_linear_data(skb, txptr->tx_buf_ptr, skb->len);
txptr->tdes1 = cpu_to_le32(0xe1000000 | skb->len);
/* 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 */
uw32(DCR1, 0x1); /* Issue Tx polling */
netif_trans_update(dev); /* saved time stamp */
}
/* Tx resource check */
if ( db->tx_packet_cnt < TX_FREE_DESC_CNT )
netif_wake_queue(dev);
/* Restore CR7 to enable interrupt */
spin_unlock_irqrestore(&db->lock, flags);
uw32(DCR7, db->cr7_data);
/* free this SKB */
dev_consume_skb_any(skb);
return NETDEV_TX_OK;
}
/*
* Stop the interface.
* The interface is stopped when it is brought.
*/
static int uli526x_stop(struct net_device *dev)
{
struct uli526x_board_info *db = netdev_priv(dev);
void __iomem *ioaddr = db->ioaddr;
/* disable system */
netif_stop_queue(dev);
/* deleted timer */
del_timer_sync(&db->timer);
/* Reset & stop ULI526X board */
uw32(DCR0, ULI526X_RESET);
udelay(5);
db->phy.write(db, db->phy_addr, 0, 0x8000);
/* free interrupt */
free_irq(db->pdev->irq, dev);
/* free allocated rx buffer */
uli526x_free_rxbuffer(db);
return 0;
}
/*
* M5261/M5263 insterrupt handler
* receive the packet to upper layer, free the transmitted packet
*/
static irqreturn_t uli526x_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct uli526x_board_info *db = netdev_priv(dev);
void __iomem *ioaddr = db->ioaddr;
unsigned long flags;
spin_lock_irqsave(&db->lock, flags);
uw32(DCR7, 0);
/* Got ULI526X status */
db->cr5_data = ur32(DCR5);
uw32(DCR5, db->cr5_data);
if ( !(db->cr5_data & 0x180c1) ) {
/* Restore CR7 to enable interrupt mask */
uw32(DCR7, db->cr7_data);
spin_unlock_irqrestore(&db->lock, flags);
return IRQ_HANDLED;
}
/* Check system status */
if (db->cr5_data & 0x2000) {
/* system bus error happen */
ULI526X_DBUG(1, "System bus error happen. CR5=", db->cr5_data);
db->reset_fatal++;
db->wait_reset = 1; /* Need to RESET */
spin_unlock_irqrestore(&db->lock, flags);
return IRQ_HANDLED;
}
/* Received the coming packet */
if ( (db->cr5_data & 0x40) && db->rx_avail_cnt )
uli526x_rx_packet(dev, db);
/* reallocate rx descriptor buffer */
if (db->rx_avail_cnt<RX_DESC_CNT)
allocate_rx_buffer(dev);
/* Free the transmitted descriptor */
if ( db->cr5_data & 0x01)
uli526x_free_tx_pkt(dev, db);
/* Restore CR7 to enable interrupt mask */
uw32(DCR7, db->cr7_data);
spin_unlock_irqrestore(&db->lock, flags);
return IRQ_HANDLED;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void uli526x_poll(struct net_device *dev)
{
struct uli526x_board_info *db = netdev_priv(dev);
/* ISR grabs the irqsave lock, so this should be safe */
uli526x_interrupt(db->pdev->irq, dev);
}
#endif
/*
* Free TX resource after TX complete
*/
static void uli526x_free_tx_pkt(struct net_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);
if (tdes0 & 0x80000000)
break;
/* A packet sent completed */
db->tx_packet_cnt--;
dev->stats.tx_packets++;
/* Transmit statistic counter */
if ( tdes0 != 0x7fffffff ) {
dev->stats.collisions += (tdes0 >> 3) & 0xf;
dev->stats.tx_bytes += le32_to_cpu(txptr->tdes1) & 0x7ff;
if (tdes0 & TDES0_ERR_MASK) {
dev->stats.tx_errors++;
if (tdes0 & 0x0002) { /* UnderRun */
db->tx_fifo_underrun++;
if ( !(db->cr6_data & CR6_SFT) ) {
db->cr6_data = db->cr6_data | CR6_SFT;
update_cr6(db->cr6_data, db->ioaddr);
}
}
if (tdes0 & 0x0100)
db->tx_excessive_collision++;
if (tdes0 & 0x0200)
db->tx_late_collision++;
if (tdes0 & 0x0400)
db->tx_no_carrier++;
if (tdes0 & 0x0800)
db->tx_loss_carrier++;
if (tdes0 & 0x4000)
db->tx_jabber_timeout++;
}
}
txptr = txptr->next_tx_desc;
}/* End of while */
/* Update TX remove pointer to next */
db->tx_remove_ptr = txptr;
/* Resource available check */
if ( db->tx_packet_cnt < TX_WAKE_DESC_CNT )
netif_wake_queue(dev); /* Active upper layer, send again */
}
/*
* Receive the come packet and pass to upper layer
*/
static void uli526x_rx_packet(struct net_device *dev, struct uli526x_board_info * db)
{
struct rx_desc *rxptr;
struct sk_buff *skb;
int rxlen;
u32 rdes0;
rxptr = db->rx_ready_ptr;
while(db->rx_avail_cnt) {
rdes0 = le32_to_cpu(rxptr->rdes0);
if (rdes0 & 0x80000000) /* packet owner check */
{
break;
}
db->rx_avail_cnt--;
db->interval_rx_cnt++;
dma_unmap_single(&db->pdev->dev, le32_to_cpu(rxptr->rdes2),
RX_ALLOC_SIZE, DMA_FROM_DEVICE);
if ( (rdes0 & 0x300) != 0x300) {
/* A packet without First/Last flag */
/* reuse this SKB */
ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
} else {
/* A packet with First/Last flag */
rxlen = ( (rdes0 >> 16) & 0x3fff) - 4;
/* error summary bit check */
if (rdes0 & 0x8000) {
/* This is a error packet */
dev->stats.rx_errors++;
if (rdes0 & 1)
dev->stats.rx_fifo_errors++;
if (rdes0 & 2)
dev->stats.rx_crc_errors++;
if (rdes0 & 0x80)
dev->stats.rx_length_errors++;
}
if ( !(rdes0 & 0x8000) ||
((db->cr6_data & CR6_PM) && (rxlen>6)) ) {
struct sk_buff *new_skb = NULL;
skb = rxptr->rx_skb_ptr;
/* Good packet, send to upper layer */
/* Shorst packet used new SKB */
if ((rxlen < RX_COPY_SIZE) &&
(((new_skb = netdev_alloc_skb(dev, rxlen + 2)) != NULL))) {
skb = new_skb;
/* size less than COPY_SIZE, allocate a rxlen SKB */
skb_reserve(skb, 2); /* 16byte align */
skb_put_data(skb,
skb_tail_pointer(rxptr->rx_skb_ptr),
rxlen);
uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
} else
skb_put(skb, rxlen);
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
dev->stats.rx_packets++;
dev->stats.rx_bytes += rxlen;
} else {
/* Reuse SKB buffer when the packet is error */
ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
}
}
rxptr = rxptr->next_rx_desc;
}
db->rx_ready_ptr = rxptr;
}
/*
* Set ULI526X multicast address
*/
static void uli526x_set_filter_mode(struct net_device * dev)
{
struct uli526x_board_info *db = netdev_priv(dev);
unsigned long flags;
ULI526X_DBUG(0, "uli526x_set_filter_mode()", 0);
spin_lock_irqsave(&db->lock, flags);
if (dev->flags & IFF_PROMISC) {
ULI526X_DBUG(0, "Enable PROM Mode", 0);
db->cr6_data |= CR6_PM | CR6_PBF;
update_cr6(db->cr6_data, db->ioaddr);
spin_unlock_irqrestore(&db->lock, flags);
return;
}
if (dev->flags & IFF_ALLMULTI ||
netdev_mc_count(dev) > ULI5261_MAX_MULTICAST) {
ULI526X_DBUG(0, "Pass all multicast address",
netdev_mc_count(dev));
db->cr6_data &= ~(CR6_PM | CR6_PBF);
db->cr6_data |= CR6_PAM;
spin_unlock_irqrestore(&db->lock, flags);
return;
}
ULI526X_DBUG(0, "Set multicast address", netdev_mc_count(dev));
send_filter_frame(dev, netdev_mc_count(dev)); /* M5261/M5263 */
spin_unlock_irqrestore(&db->lock, flags);
}
static void
ULi_ethtool_get_link_ksettings(struct uli526x_board_info *db,
struct ethtool_link_ksettings *cmd)
{
u32 supported, advertising;
supported = (SUPPORTED_10baseT_Half |
SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half |
SUPPORTED_100baseT_Full |
SUPPORTED_Autoneg |
SUPPORTED_MII);
advertising = (ADVERTISED_10baseT_Half |
ADVERTISED_10baseT_Full |
ADVERTISED_100baseT_Half |
ADVERTISED_100baseT_Full |
ADVERTISED_Autoneg |
ADVERTISED_MII);
ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
supported);
ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
advertising);
cmd->base.port = PORT_MII;
cmd->base.phy_address = db->phy_addr;
cmd->base.speed = SPEED_10;
cmd->base.duplex = DUPLEX_HALF;
if(db->op_mode==ULI526X_100MHF || db->op_mode==ULI526X_100MFD)
{
cmd->base.speed = SPEED_100;
}
if(db->op_mode==ULI526X_10MFD || db->op_mode==ULI526X_100MFD)
{
cmd->base.duplex = DUPLEX_FULL;
}
if(db->link_failed)
{
cmd->base.speed = SPEED_UNKNOWN;
cmd->base.duplex = DUPLEX_UNKNOWN;
}
if (db->media_mode & ULI526X_AUTO)
{
cmd->base.autoneg = AUTONEG_ENABLE;
}
}
static void netdev_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
struct uli526x_board_info *np = netdev_priv(dev);
strscpy(info->driver, DRV_NAME, sizeof(info->driver));
strscpy(info->bus_info, pci_name(np->pdev), sizeof(info->bus_info));
}
static int netdev_get_link_ksettings(struct net_device *dev,
struct ethtool_link_ksettings *cmd)
{
struct uli526x_board_info *np = netdev_priv(dev);
ULi_ethtool_get_link_ksettings(np, cmd);
return 0;
}
static u32 netdev_get_link(struct net_device *dev) {
struct uli526x_board_info *np = netdev_priv(dev);
if(np->link_failed)
return 0;
else
return 1;
}
static void uli526x_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
wol->supported = WAKE_PHY | WAKE_MAGIC;
wol->wolopts = 0;
}
static const struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
.get_link = netdev_get_link,
.get_wol = uli526x_get_wol,
.get_link_ksettings = netdev_get_link_ksettings,
};
/*
* A periodic timer routine
* Dynamic media sense, allocate Rx buffer...
*/
static void uli526x_timer(struct timer_list *t)
{
struct uli526x_board_info *db = from_timer(db, t, timer);
struct net_device *dev = pci_get_drvdata(db->pdev);
struct uli_phy_ops *phy = &db->phy;
void __iomem *ioaddr = db->ioaddr;
unsigned long flags;
u8 tmp_cr12 = 0;
u32 tmp_cr8;
//ULI526X_DBUG(0, "uli526x_timer()", 0);
spin_lock_irqsave(&db->lock, flags);
/* Dynamic reset ULI526X : system error or transmit time-out */
tmp_cr8 = ur32(DCR8);
if ( (db->interval_rx_cnt==0) && (tmp_cr8) ) {
db->reset_cr8++;
db->wait_reset = 1;
}
db->interval_rx_cnt = 0;
/* TX polling kick monitor */
if ( db->tx_packet_cnt &&
time_after(jiffies, dev_trans_start(dev) + ULI526X_TX_KICK) ) {
uw32(DCR1, 0x1); // Tx polling again
// TX Timeout
if ( time_after(jiffies, dev_trans_start(dev) + ULI526X_TX_TIMEOUT) ) {
db->reset_TXtimeout++;
db->wait_reset = 1;
netdev_err(dev, " Tx timeout - resetting\n");
}
}
if (db->wait_reset) {
ULI526X_DBUG(0, "Dynamic Reset device", db->tx_packet_cnt);
db->reset_count++;
uli526x_dynamic_reset(dev);
db->timer.expires = ULI526X_TIMER_WUT;
add_timer(&db->timer);
spin_unlock_irqrestore(&db->lock, flags);
return;
}
/* Link status check, Dynamic media type change */
if ((phy->read(db, db->phy_addr, 5) & 0x01e0)!=0)
tmp_cr12 = 3;
if ( !(tmp_cr12 & 0x3) && !db->link_failed ) {
/* Link Failed */
ULI526X_DBUG(0, "Link Failed", tmp_cr12);
netif_carrier_off(dev);
netdev_info(dev, "NIC Link is Down\n");
db->link_failed = 1;
/* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
/* AUTO don't need */
if ( !(db->media_mode & 0x8) )
phy->write(db, db->phy_addr, 0, 0x1000);
/* AUTO mode, if INT phyxcer link failed, select EXT device */
if (db->media_mode & ULI526X_AUTO) {
db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
update_cr6(db->cr6_data, db->ioaddr);
}
} else
if ((tmp_cr12 & 0x3) && db->link_failed) {
ULI526X_DBUG(0, "Link link OK", tmp_cr12);
db->link_failed = 0;
/* Auto Sense Speed */
if ( (db->media_mode & ULI526X_AUTO) &&
uli526x_sense_speed(db) )
db->link_failed = 1;
uli526x_process_mode(db);
if(db->link_failed==0)
{
netdev_info(dev, "NIC Link is Up %d Mbps %s duplex\n",
(db->op_mode == ULI526X_100MHF ||
db->op_mode == ULI526X_100MFD)
? 100 : 10,
(db->op_mode == ULI526X_10MFD ||
db->op_mode == ULI526X_100MFD)
? "Full" : "Half");
netif_carrier_on(dev);
}
/* SHOW_MEDIA_TYPE(db->op_mode); */
}
else if(!(tmp_cr12 & 0x3) && db->link_failed)
{
if(db->init==1)
{
netdev_info(dev, "NIC Link is Down\n");
netif_carrier_off(dev);
}
}
db->init = 0;
/* Timer active again */
db->timer.expires = ULI526X_TIMER_WUT;
add_timer(&db->timer);
spin_unlock_irqrestore(&db->lock, flags);
}
/*
* Stop ULI526X board
* Free Tx/Rx allocated memory
* Init system variable
*/
static void uli526x_reset_prepare(struct net_device *dev)
{
struct uli526x_board_info *db = netdev_priv(dev);
void __iomem *ioaddr = db->ioaddr;
/* Sopt MAC controller */
db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
update_cr6(db->cr6_data, ioaddr);
uw32(DCR7, 0); /* Disable Interrupt */
uw32(DCR5, ur32(DCR5));
/* Disable upper layer interface */
netif_stop_queue(dev);
/* Free Rx Allocate buffer */
uli526x_free_rxbuffer(db);
/* system variable init */
db->tx_packet_cnt = 0;
db->rx_avail_cnt = 0;
db->link_failed = 1;
db->init=1;
db->wait_reset = 0;
}
/*
* Dynamic reset the ULI526X board
* Stop ULI526X board
* Free Tx/Rx allocated memory
* Reset ULI526X board
* Re-initialize ULI526X board
*/
static void uli526x_dynamic_reset(struct net_device *dev)
{
ULI526X_DBUG(0, "uli526x_dynamic_reset()", 0);
uli526x_reset_prepare(dev);
/* Re-initialize ULI526X board */
uli526x_init(dev);
/* Restart upper layer interface */
netif_wake_queue(dev);
}
/*
* Suspend the interface.
*/
static int __maybe_unused uli526x_suspend(struct device *dev_d)
{
struct net_device *dev = dev_get_drvdata(dev_d);
ULI526X_DBUG(0, "uli526x_suspend", 0);
if (!netif_running(dev))
return 0;
netif_device_detach(dev);
uli526x_reset_prepare(dev);
device_set_wakeup_enable(dev_d, 0);
return 0;
}
/*
* Resume the interface.
*/
static int __maybe_unused uli526x_resume(struct device *dev_d)
{
struct net_device *dev = dev_get_drvdata(dev_d);
ULI526X_DBUG(0, "uli526x_resume", 0);
if (!netif_running(dev))
return 0;
netif_device_attach(dev);
/* Re-initialize ULI526X board */
uli526x_init(dev);
/* Restart upper layer interface */
netif_wake_queue(dev);
return 0;
}
/*
* free all allocated rx buffer
*/
static void uli526x_free_rxbuffer(struct uli526x_board_info * db)
{
ULI526X_DBUG(0, "uli526x_free_rxbuffer()", 0);
/* free allocated rx buffer */
while (db->rx_avail_cnt) {
dev_kfree_skb(db->rx_ready_ptr->rx_skb_ptr);
db->rx_ready_ptr = db->rx_ready_ptr->next_rx_desc;
db->rx_avail_cnt--;
}
}
/*
* Reuse the SK buffer
*/
static void uli526x_reuse_skb(struct uli526x_board_info *db, struct sk_buff * skb)
{
struct rx_desc *rxptr = db->rx_insert_ptr;
if (!(rxptr->rdes0 & cpu_to_le32(0x80000000))) {
rxptr->rx_skb_ptr = skb;
rxptr->rdes2 = cpu_to_le32(dma_map_single(&db->pdev->dev, skb_tail_pointer(skb),
RX_ALLOC_SIZE, DMA_FROM_DEVICE));
wmb();
rxptr->rdes0 = cpu_to_le32(0x80000000);
db->rx_avail_cnt++;
db->rx_insert_ptr = rxptr->next_rx_desc;
} else
ULI526X_DBUG(0, "SK Buffer reuse method error", db->rx_avail_cnt);
}
/*
* Initialize transmit/Receive descriptor
* Using Chain structure, and allocate Tx/Rx buffer
*/
static void uli526x_descriptor_init(struct net_device *dev, void __iomem *ioaddr)
{
struct uli526x_board_info *db = netdev_priv(dev);
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;
ULI526X_DBUG(0, "uli526x_descriptor_init()", 0);
/* tx descriptor start pointer */
db->tx_insert_ptr = db->first_tx_desc;
db->tx_remove_ptr = db->first_tx_desc;
uw32(DCR4, db->first_tx_desc_dma); /* 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_insert_ptr = db->first_rx_desc;
db->rx_ready_ptr = db->first_rx_desc;
uw32(DCR3, db->first_rx_desc_dma); /* RX DESC address */
/* 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(dev);
}
/*
* Update CR6 value
* Firstly stop ULI526X, then written value and start
*/
static void update_cr6(u32 cr6_data, void __iomem *ioaddr)
{
uw32(DCR6, cr6_data);
udelay(5);
}
/*
* Send a setup frame for M5261/M5263
* This setup frame initialize ULI526X address filter mode
*/
#ifdef __BIG_ENDIAN
#define FLT_SHIFT 16
#else
#define FLT_SHIFT 0
#endif
static void send_filter_frame(struct net_device *dev, int mc_cnt)
{
struct uli526x_board_info *db = netdev_priv(dev);
void __iomem *ioaddr = db->ioaddr;
struct netdev_hw_addr *ha;
struct tx_desc *txptr;
const u16 * addrptr;
u32 * suptr;
int i;
ULI526X_DBUG(0, "send_filter_frame()", 0);
txptr = db->tx_insert_ptr;
suptr = (u32 *) txptr->tx_buf_ptr;
/* Node address */
addrptr = (const u16 *) dev->dev_addr;
*suptr++ = addrptr[0] << FLT_SHIFT;
*suptr++ = addrptr[1] << FLT_SHIFT;
*suptr++ = addrptr[2] << FLT_SHIFT;
/* broadcast address */
*suptr++ = 0xffff << FLT_SHIFT;
*suptr++ = 0xffff << FLT_SHIFT;
*suptr++ = 0xffff << FLT_SHIFT;
/* fit the multicast address */
netdev_for_each_mc_addr(ha, dev) {
addrptr = (u16 *) ha->addr;
*suptr++ = addrptr[0] << FLT_SHIFT;
*suptr++ = addrptr[1] << FLT_SHIFT;
*suptr++ = addrptr[2] << FLT_SHIFT;
}
for (i = netdev_mc_count(dev); i < 14; i++) {
*suptr++ = 0xffff << FLT_SHIFT;
*suptr++ = 0xffff << FLT_SHIFT;
*suptr++ = 0xffff << FLT_SHIFT;
}
/* prepare the setup frame */
db->tx_insert_ptr = txptr->next_tx_desc;
txptr->tdes1 = cpu_to_le32(0x890000c0);
/* Resource Check and Send the setup packet */
if (db->tx_packet_cnt < TX_DESC_CNT) {
/* Resource Empty */
db->tx_packet_cnt++;
txptr->tdes0 = cpu_to_le32(0x80000000);
update_cr6(db->cr6_data | 0x2000, ioaddr);
uw32(DCR1, 0x1); /* Issue Tx polling */
update_cr6(db->cr6_data, ioaddr);
netif_trans_update(dev);
} else
netdev_err(dev, "No Tx resource - Send_filter_frame!\n");
}
/*
* Allocate rx buffer,
* As possible as allocate maxiumn Rx buffer
*/
static void allocate_rx_buffer(struct net_device *dev)
{
struct uli526x_board_info *db = netdev_priv(dev);
struct rx_desc *rxptr;
struct sk_buff *skb;
rxptr = db->rx_insert_ptr;
while(db->rx_avail_cnt < RX_DESC_CNT) {
skb = netdev_alloc_skb(dev, RX_ALLOC_SIZE);
if (skb == NULL)
break;
rxptr->rx_skb_ptr = skb; /* FIXME (?) */
rxptr->rdes2 = cpu_to_le32(dma_map_single(&db->pdev->dev, skb_tail_pointer(skb),
RX_ALLOC_SIZE, DMA_FROM_DEVICE));
wmb();
rxptr->rdes0 = cpu_to_le32(0x80000000);
rxptr = rxptr->next_rx_desc;
db->rx_avail_cnt++;
}
db->rx_insert_ptr = rxptr;
}
/*
* Read one word data from the serial ROM
*/
static u16 read_srom_word(struct uli526x_board_info *db, int offset)
{
void __iomem *ioaddr = db->ioaddr;
u16 srom_data = 0;
int i;
uw32(DCR9, CR9_SROM_READ);
uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
/* Send the Read Command 110b */
srom_clk_write(db, SROM_DATA_1);
srom_clk_write(db, SROM_DATA_1);
srom_clk_write(db, SROM_DATA_0);
/* Send the offset */
for (i = 5; i >= 0; i--) {
srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
srom_clk_write(db, srom_data);
}
uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
for (i = 16; i > 0; i--) {
uw32(DCR9, CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
udelay(5);
srom_data = (srom_data << 1) |
((ur32(DCR9) & CR9_CRDOUT) ? 1 : 0);
uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
udelay(5);
}
uw32(DCR9, CR9_SROM_READ);
return srom_data;
}
/*
* Auto sense the media mode
*/
static u8 uli526x_sense_speed(struct uli526x_board_info * db)
{
struct uli_phy_ops *phy = &db->phy;
u8 ErrFlag = 0;
u16 phy_mode;
phy_mode = phy->read(db, db->phy_addr, 1);
phy_mode = phy->read(db, db->phy_addr, 1);
if ( (phy_mode & 0x24) == 0x24 ) {
phy_mode = ((phy->read(db, db->phy_addr, 5) & 0x01e0)<<7);
if(phy_mode&0x8000)
phy_mode = 0x8000;
else if(phy_mode&0x4000)
phy_mode = 0x4000;
else if(phy_mode&0x2000)
phy_mode = 0x2000;
else
phy_mode = 0x1000;
switch (phy_mode) {
case 0x1000: db->op_mode = ULI526X_10MHF; break;
case 0x2000: db->op_mode = ULI526X_10MFD; break;
case 0x4000: db->op_mode = ULI526X_100MHF; break;
case 0x8000: db->op_mode = ULI526X_100MFD; break;
default: db->op_mode = ULI526X_10MHF; ErrFlag = 1; break;
}
} else {
db->op_mode = ULI526X_10MHF;
ULI526X_DBUG(0, "Link Failed :", phy_mode);
ErrFlag = 1;
}
return ErrFlag;
}
/*
* 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)
{
struct uli_phy_ops *phy = &db->phy;
u16 phy_reg;
/* Phyxcer capability setting */
phy_reg = phy->read(db, db->phy_addr, 4) & ~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, db->phy_addr, 4, phy_reg);
/* Restart Auto-Negotiation */
phy->write(db, db->phy_addr, 0, 0x1200);
udelay(50);
}
/*
* Process op-mode
AUTO mode : PHY controller in Auto-negotiation Mode
* Force mode: PHY controller in force mode with HUB
* N-way force capability with SWITCH
*/
static void uli526x_process_mode(struct uli526x_board_info *db)
{
struct uli_phy_ops *phy = &db->phy;
u16 phy_reg;
/* Full Duplex Mode Check */
if (db->op_mode & 0x4)
db->cr6_data |= CR6_FDM; /* Set Full Duplex Bit */
else
db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */
update_cr6(db->cr6_data, db->ioaddr);
/* 10/100M phyxcer force mode need */
if (!(db->media_mode & 0x8)) {
/* Forece Mode */
phy_reg = phy->read(db, db->phy_addr, 6);
if (!(phy_reg & 0x1)) {
/* parter without N-Way capability */
phy_reg = 0x0;
switch(db->op_mode) {
case ULI526X_10MHF: phy_reg = 0x0; break;
case ULI526X_10MFD: phy_reg = 0x100; break;
case ULI526X_100MHF: phy_reg = 0x2000; break;
case ULI526X_100MFD: phy_reg = 0x2100; break;
}
phy->write(db, db->phy_addr, 0, phy_reg);
}
}
}
/* M5261/M5263 Chip */
static void phy_writeby_cr9(struct uli526x_board_info *db, u8 phy_addr,
u8 offset, u16 phy_data)
{
u16 i;
/* Send 33 synchronization clock to Phy controller */
for (i = 0; i < 35; i++)
phy_write_1bit(db, PHY_DATA_1);
/* Send start command(01) to Phy */
phy_write_1bit(db, PHY_DATA_0);
phy_write_1bit(db, PHY_DATA_1);
/* Send write command(01) to Phy */
phy_write_1bit(db, PHY_DATA_0);
phy_write_1bit(db, PHY_DATA_1);
/* Send Phy address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(db, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
/* Send register address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(db, offset & i ? PHY_DATA_1 : PHY_DATA_0);
/* written trasnition */
phy_write_1bit(db, PHY_DATA_1);
phy_write_1bit(db, PHY_DATA_0);
/* Write a word data to PHY controller */
for (i = 0x8000; i > 0; i >>= 1)
phy_write_1bit(db, phy_data & i ? PHY_DATA_1 : PHY_DATA_0);
}
static u16 phy_readby_cr9(struct uli526x_board_info *db, u8 phy_addr, u8 offset)
{
u16 phy_data;
int i;
/* Send 33 synchronization clock to Phy controller */
for (i = 0; i < 35; i++)
phy_write_1bit(db, PHY_DATA_1);
/* Send start command(01) to Phy */
phy_write_1bit(db, PHY_DATA_0);
phy_write_1bit(db, PHY_DATA_1);
/* Send read command(10) to Phy */
phy_write_1bit(db, PHY_DATA_1);
phy_write_1bit(db, PHY_DATA_0);
/* Send Phy address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(db, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
/* Send register address */
for (i = 0x10; i > 0; i = i >> 1)
phy_write_1bit(db, offset & i ? PHY_DATA_1 : PHY_DATA_0);
/* Skip transition state */
phy_read_1bit(db);
/* read 16bit data */
for (phy_data = 0, i = 0; i < 16; i++) {
phy_data <<= 1;
phy_data |= phy_read_1bit(db);
}
return phy_data;
}
static u16 phy_readby_cr10(struct uli526x_board_info *db, u8 phy_addr,
u8 offset)
{
void __iomem *ioaddr = db->ioaddr;
u32 cr10_value = phy_addr;
cr10_value = (cr10_value << 5) + offset;
cr10_value = (cr10_value << 16) + 0x08000000;
uw32(DCR10, cr10_value);
udelay(1);
while (1) {
cr10_value = ur32(DCR10);
if (cr10_value & 0x10000000)
break;
}
return cr10_value & 0x0ffff;
}
static void phy_writeby_cr10(struct uli526x_board_info *db, u8 phy_addr,
u8 offset, u16 phy_data)
{
void __iomem *ioaddr = db->ioaddr;
u32 cr10_value = phy_addr;
cr10_value = (cr10_value << 5) + offset;
cr10_value = (cr10_value << 16) + 0x04000000 + phy_data;
uw32(DCR10, cr10_value);
udelay(1);
}
/*
* Write one bit data to Phy Controller
*/
static void phy_write_1bit(struct uli526x_board_info *db, u32 data)
{
void __iomem *ioaddr = db->ioaddr;
uw32(DCR9, data); /* MII Clock Low */
udelay(1);
uw32(DCR9, data | MDCLKH); /* MII Clock High */
udelay(1);
uw32(DCR9, data); /* MII Clock Low */
udelay(1);
}
/*
* Read one bit phy data from PHY controller
*/
static u16 phy_read_1bit(struct uli526x_board_info *db)
{
void __iomem *ioaddr = db->ioaddr;
u16 phy_data;
uw32(DCR9, 0x50000);
udelay(1);
phy_data = (ur32(DCR9) >> 19) & 0x1;
uw32(DCR9, 0x40000);
udelay(1);
return phy_data;
}
static const struct pci_device_id uli526x_pci_tbl[] = {
{ 0x10B9, 0x5261, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5261_ID },
{ 0x10B9, 0x5263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5263_ID },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, uli526x_pci_tbl);
static SIMPLE_DEV_PM_OPS(uli526x_pm_ops, uli526x_suspend, uli526x_resume);
static struct pci_driver uli526x_driver = {
.name = "uli526x",
.id_table = uli526x_pci_tbl,
.probe = uli526x_init_one,
.remove = uli526x_remove_one,
.driver.pm = &uli526x_pm_ops,
};
MODULE_AUTHOR("Peer Chen, peer.chen@uli.com.tw");
MODULE_DESCRIPTION("ULi M5261/M5263 fast ethernet driver");
MODULE_LICENSE("GPL");
module_param(debug, int, 0644);
module_param(mode, int, 0);
module_param(cr6set, int, 0);
MODULE_PARM_DESC(debug, "ULi M5261/M5263 enable debugging (0-1)");
MODULE_PARM_DESC(mode, "ULi M5261/M5263: Bit 0: 10/100Mbps, bit 2: duplex, bit 8: HomePNA");
/* Description:
* when user used insmod to add module, system invoked init_module()
* to register the services.
*/
static int __init uli526x_init_module(void)
{
ULI526X_DBUG(0, "init_module() ", debug);
if (debug)
uli526x_debug = debug; /* set debug flag */
if (cr6set)
uli526x_cr6_user_set = cr6set;
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;
}
return pci_register_driver(&uli526x_driver);
}
/*
* Description:
* when user used rmmod to delete module, system invoked clean_module()
* to un-register all registered services.
*/
static void __exit uli526x_cleanup_module(void)
{
ULI526X_DBUG(0, "uli526x_cleanup_module() ", debug);
pci_unregister_driver(&uli526x_driver);
}
module_init(uli526x_init_module);
module_exit(uli526x_cleanup_module);