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-rw-r--r--drivers/net/sis900.c2494
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diff --git a/drivers/net/sis900.c b/drivers/net/sis900.c
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--- a/drivers/net/sis900.c
+++ /dev/null
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-/* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
- Copyright 1999 Silicon Integrated System Corporation
- Revision: 1.08.10 Apr. 2 2006
-
- Modified from the driver which is originally written by Donald Becker.
-
- This software may be used and distributed according to the terms
- of the GNU General Public License (GPL), incorporated herein by reference.
- Drivers based on this skeleton fall under the GPL and must retain
- the authorship (implicit copyright) notice.
-
- References:
- SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
- preliminary Rev. 1.0 Jan. 14, 1998
- SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
- preliminary Rev. 1.0 Nov. 10, 1998
- SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
- preliminary Rev. 1.0 Jan. 18, 1998
-
- Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
- Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
- Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
- Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
- Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
- Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
- Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
- Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
- Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
- Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
- Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
- Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3
- Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
- Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
- Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
- Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
- Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
- Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
- Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
- Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E equalizer workaround rule
- Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
- Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
- Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
- Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
- Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
- Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
- Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
- Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
- Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
- Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
-*/
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/netdevice.h>
-#include <linux/init.h>
-#include <linux/mii.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/delay.h>
-#include <linux/ethtool.h>
-#include <linux/crc32.h>
-#include <linux/bitops.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/processor.h> /* Processor type for cache alignment. */
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h> /* User space memory access functions */
-
-#include "sis900.h"
-
-#define SIS900_MODULE_NAME "sis900"
-#define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
-
-static const char version[] __devinitconst =
- KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
-
-static int max_interrupt_work = 40;
-static int multicast_filter_limit = 128;
-
-static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
-
-#define SIS900_DEF_MSG \
- (NETIF_MSG_DRV | \
- NETIF_MSG_LINK | \
- NETIF_MSG_RX_ERR | \
- NETIF_MSG_TX_ERR)
-
-/* Time in jiffies before concluding the transmitter is hung. */
-#define TX_TIMEOUT (4*HZ)
-
-enum {
- SIS_900 = 0,
- SIS_7016
-};
-static const char * card_names[] = {
- "SiS 900 PCI Fast Ethernet",
- "SiS 7016 PCI Fast Ethernet"
-};
-static DEFINE_PCI_DEVICE_TABLE(sis900_pci_tbl) = {
- {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
- {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
- {0,}
-};
-MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
-
-static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
-
-static const struct mii_chip_info {
- const char * name;
- u16 phy_id0;
- u16 phy_id1;
- u8 phy_types;
-#define HOME 0x0001
-#define LAN 0x0002
-#define MIX 0x0003
-#define UNKNOWN 0x0
-} mii_chip_table[] = {
- { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
- { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
- { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
- { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
- { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
- { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
- { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
- { "ICS LAN PHY", 0x0015, 0xF440, LAN },
- { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
- { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
- { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
- { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
- { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
- {NULL,},
-};
-
-struct mii_phy {
- struct mii_phy * next;
- int phy_addr;
- u16 phy_id0;
- u16 phy_id1;
- u16 status;
- u8 phy_types;
-};
-
-typedef struct _BufferDesc {
- u32 link;
- u32 cmdsts;
- u32 bufptr;
-} BufferDesc;
-
-struct sis900_private {
- struct pci_dev * pci_dev;
-
- spinlock_t lock;
-
- struct mii_phy * mii;
- struct mii_phy * first_mii; /* record the first mii structure */
- unsigned int cur_phy;
- struct mii_if_info mii_info;
-
- struct timer_list timer; /* Link status detection timer. */
- u8 autong_complete; /* 1: auto-negotiate complete */
-
- u32 msg_enable;
-
- unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
- unsigned int cur_tx, dirty_tx;
-
- /* The saved address of a sent/receive-in-place packet buffer */
- struct sk_buff *tx_skbuff[NUM_TX_DESC];
- struct sk_buff *rx_skbuff[NUM_RX_DESC];
- BufferDesc *tx_ring;
- BufferDesc *rx_ring;
-
- dma_addr_t tx_ring_dma;
- dma_addr_t rx_ring_dma;
-
- unsigned int tx_full; /* The Tx queue is full. */
- u8 host_bridge_rev;
- u8 chipset_rev;
-};
-
-MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
-MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
-MODULE_LICENSE("GPL");
-
-module_param(multicast_filter_limit, int, 0444);
-module_param(max_interrupt_work, int, 0444);
-module_param(sis900_debug, int, 0444);
-MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
-MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
-MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void sis900_poll(struct net_device *dev);
-#endif
-static int sis900_open(struct net_device *net_dev);
-static int sis900_mii_probe (struct net_device * net_dev);
-static void sis900_init_rxfilter (struct net_device * net_dev);
-static u16 read_eeprom(long ioaddr, int location);
-static int mdio_read(struct net_device *net_dev, int phy_id, int location);
-static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
-static void sis900_timer(unsigned long data);
-static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
-static void sis900_tx_timeout(struct net_device *net_dev);
-static void sis900_init_tx_ring(struct net_device *net_dev);
-static void sis900_init_rx_ring(struct net_device *net_dev);
-static netdev_tx_t sis900_start_xmit(struct sk_buff *skb,
- struct net_device *net_dev);
-static int sis900_rx(struct net_device *net_dev);
-static void sis900_finish_xmit (struct net_device *net_dev);
-static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
-static int sis900_close(struct net_device *net_dev);
-static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
-static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
-static void set_rx_mode(struct net_device *net_dev);
-static void sis900_reset(struct net_device *net_dev);
-static void sis630_set_eq(struct net_device *net_dev, u8 revision);
-static int sis900_set_config(struct net_device *dev, struct ifmap *map);
-static u16 sis900_default_phy(struct net_device * net_dev);
-static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
-static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
-static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
-static void sis900_set_mode (long ioaddr, int speed, int duplex);
-static const struct ethtool_ops sis900_ethtool_ops;
-
-/**
- * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
- * @pci_dev: the sis900 pci device
- * @net_dev: the net device to get address for
- *
- * Older SiS900 and friends, use EEPROM to store MAC address.
- * MAC address is read from read_eeprom() into @net_dev->dev_addr and
- * @net_dev->perm_addr.
- */
-
-static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
-{
- long ioaddr = pci_resource_start(pci_dev, 0);
- u16 signature;
- int i;
-
- /* check to see if we have sane EEPROM */
- signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
- if (signature == 0xffff || signature == 0x0000) {
- printk (KERN_WARNING "%s: Error EERPOM read %x\n",
- pci_name(pci_dev), signature);
- return 0;
- }
-
- /* get MAC address from EEPROM */
- for (i = 0; i < 3; i++)
- ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
-
- /* Store MAC Address in perm_addr */
- memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
-
- return 1;
-}
-
-/**
- * sis630e_get_mac_addr - Get MAC address for SiS630E model
- * @pci_dev: the sis900 pci device
- * @net_dev: the net device to get address for
- *
- * SiS630E model, use APC CMOS RAM to store MAC address.
- * APC CMOS RAM is accessed through ISA bridge.
- * MAC address is read into @net_dev->dev_addr and
- * @net_dev->perm_addr.
- */
-
-static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
- struct net_device *net_dev)
-{
- struct pci_dev *isa_bridge = NULL;
- u8 reg;
- int i;
-
- isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
- if (!isa_bridge)
- isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
- if (!isa_bridge) {
- printk(KERN_WARNING "%s: Can not find ISA bridge\n",
- pci_name(pci_dev));
- return 0;
- }
- pci_read_config_byte(isa_bridge, 0x48, &reg);
- pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
-
- for (i = 0; i < 6; i++) {
- outb(0x09 + i, 0x70);
- ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
- }
-
- /* Store MAC Address in perm_addr */
- memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
-
- pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
- pci_dev_put(isa_bridge);
-
- return 1;
-}
-
-
-/**
- * sis635_get_mac_addr - Get MAC address for SIS635 model
- * @pci_dev: the sis900 pci device
- * @net_dev: the net device to get address for
- *
- * SiS635 model, set MAC Reload Bit to load Mac address from APC
- * to rfdr. rfdr is accessed through rfcr. MAC address is read into
- * @net_dev->dev_addr and @net_dev->perm_addr.
- */
-
-static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
- struct net_device *net_dev)
-{
- long ioaddr = net_dev->base_addr;
- u32 rfcrSave;
- u32 i;
-
- rfcrSave = inl(rfcr + ioaddr);
-
- outl(rfcrSave | RELOAD, ioaddr + cr);
- outl(0, ioaddr + cr);
-
- /* disable packet filtering before setting filter */
- outl(rfcrSave & ~RFEN, rfcr + ioaddr);
-
- /* load MAC addr to filter data register */
- for (i = 0 ; i < 3 ; i++) {
- outl((i << RFADDR_shift), ioaddr + rfcr);
- *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
- }
-
- /* Store MAC Address in perm_addr */
- memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
-
- /* enable packet filtering */
- outl(rfcrSave | RFEN, rfcr + ioaddr);
-
- return 1;
-}
-
-/**
- * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
- * @pci_dev: the sis900 pci device
- * @net_dev: the net device to get address for
- *
- * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
- * is shared by
- * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
- * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
- * by LAN, otherwise is not. After MAC address is read from EEPROM, send
- * EEDONE signal to refuse EEPROM access by LAN.
- * The EEPROM map of SiS962 or SiS963 is different to SiS900.
- * The signature field in SiS962 or SiS963 spec is meaningless.
- * MAC address is read into @net_dev->dev_addr and @net_dev->perm_addr.
- */
-
-static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
- struct net_device *net_dev)
-{
- long ioaddr = net_dev->base_addr;
- long ee_addr = ioaddr + mear;
- u32 waittime = 0;
- int i;
-
- outl(EEREQ, ee_addr);
- while(waittime < 2000) {
- if(inl(ee_addr) & EEGNT) {
-
- /* get MAC address from EEPROM */
- for (i = 0; i < 3; i++)
- ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
-
- /* Store MAC Address in perm_addr */
- memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
-
- outl(EEDONE, ee_addr);
- return 1;
- } else {
- udelay(1);
- waittime ++;
- }
- }
- outl(EEDONE, ee_addr);
- return 0;
-}
-
-static const struct net_device_ops sis900_netdev_ops = {
- .ndo_open = sis900_open,
- .ndo_stop = sis900_close,
- .ndo_start_xmit = sis900_start_xmit,
- .ndo_set_config = sis900_set_config,
- .ndo_set_multicast_list = set_rx_mode,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_do_ioctl = mii_ioctl,
- .ndo_tx_timeout = sis900_tx_timeout,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = sis900_poll,
-#endif
-};
-
-/**
- * sis900_probe - Probe for sis900 device
- * @pci_dev: the sis900 pci device
- * @pci_id: the pci device ID
- *
- * Check and probe sis900 net device for @pci_dev.
- * Get mac address according to the chip revision,
- * and assign SiS900-specific entries in the device structure.
- * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
- */
-
-static int __devinit sis900_probe(struct pci_dev *pci_dev,
- const struct pci_device_id *pci_id)
-{
- struct sis900_private *sis_priv;
- struct net_device *net_dev;
- struct pci_dev *dev;
- dma_addr_t ring_dma;
- void *ring_space;
- long ioaddr;
- int i, ret;
- const char *card_name = card_names[pci_id->driver_data];
- const char *dev_name = pci_name(pci_dev);
-
-/* when built into the kernel, we only print version if device is found */
-#ifndef MODULE
- static int printed_version;
- if (!printed_version++)
- printk(version);
-#endif
-
- /* setup various bits in PCI command register */
- ret = pci_enable_device(pci_dev);
- if(ret) return ret;
-
- i = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
- if(i){
- printk(KERN_ERR "sis900.c: architecture does not support "
- "32bit PCI busmaster DMA\n");
- return i;
- }
-
- pci_set_master(pci_dev);
-
- net_dev = alloc_etherdev(sizeof(struct sis900_private));
- if (!net_dev)
- return -ENOMEM;
- SET_NETDEV_DEV(net_dev, &pci_dev->dev);
-
- /* We do a request_region() to register /proc/ioports info. */
- ioaddr = pci_resource_start(pci_dev, 0);
- ret = pci_request_regions(pci_dev, "sis900");
- if (ret)
- goto err_out;
-
- sis_priv = netdev_priv(net_dev);
- net_dev->base_addr = ioaddr;
- net_dev->irq = pci_dev->irq;
- sis_priv->pci_dev = pci_dev;
- spin_lock_init(&sis_priv->lock);
-
- pci_set_drvdata(pci_dev, net_dev);
-
- ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
- if (!ring_space) {
- ret = -ENOMEM;
- goto err_out_cleardev;
- }
- sis_priv->tx_ring = ring_space;
- sis_priv->tx_ring_dma = ring_dma;
-
- ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
- if (!ring_space) {
- ret = -ENOMEM;
- goto err_unmap_tx;
- }
- sis_priv->rx_ring = ring_space;
- sis_priv->rx_ring_dma = ring_dma;
-
- /* The SiS900-specific entries in the device structure. */
- net_dev->netdev_ops = &sis900_netdev_ops;
- net_dev->watchdog_timeo = TX_TIMEOUT;
- net_dev->ethtool_ops = &sis900_ethtool_ops;
-
- if (sis900_debug > 0)
- sis_priv->msg_enable = sis900_debug;
- else
- sis_priv->msg_enable = SIS900_DEF_MSG;
-
- sis_priv->mii_info.dev = net_dev;
- sis_priv->mii_info.mdio_read = mdio_read;
- sis_priv->mii_info.mdio_write = mdio_write;
- sis_priv->mii_info.phy_id_mask = 0x1f;
- sis_priv->mii_info.reg_num_mask = 0x1f;
-
- /* Get Mac address according to the chip revision */
- sis_priv->chipset_rev = pci_dev->revision;
- if(netif_msg_probe(sis_priv))
- printk(KERN_DEBUG "%s: detected revision %2.2x, "
- "trying to get MAC address...\n",
- dev_name, sis_priv->chipset_rev);
-
- ret = 0;
- if (sis_priv->chipset_rev == SIS630E_900_REV)
- ret = sis630e_get_mac_addr(pci_dev, net_dev);
- else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
- ret = sis635_get_mac_addr(pci_dev, net_dev);
- else if (sis_priv->chipset_rev == SIS96x_900_REV)
- ret = sis96x_get_mac_addr(pci_dev, net_dev);
- else
- ret = sis900_get_mac_addr(pci_dev, net_dev);
-
- if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
- random_ether_addr(net_dev->dev_addr);
- printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
- "using random generated one\n", dev_name);
- }
-
- /* 630ET : set the mii access mode as software-mode */
- if (sis_priv->chipset_rev == SIS630ET_900_REV)
- outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
-
- /* probe for mii transceiver */
- if (sis900_mii_probe(net_dev) == 0) {
- printk(KERN_WARNING "%s: Error probing MII device.\n",
- dev_name);
- ret = -ENODEV;
- goto err_unmap_rx;
- }
-
- /* save our host bridge revision */
- dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
- if (dev) {
- sis_priv->host_bridge_rev = dev->revision;
- pci_dev_put(dev);
- }
-
- ret = register_netdev(net_dev);
- if (ret)
- goto err_unmap_rx;
-
- /* print some information about our NIC */
- printk(KERN_INFO "%s: %s at %#lx, IRQ %d, %pM\n",
- net_dev->name, card_name, ioaddr, net_dev->irq,
- net_dev->dev_addr);
-
- /* Detect Wake on Lan support */
- ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
- if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
- printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
-
- return 0;
-
- err_unmap_rx:
- pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
- sis_priv->rx_ring_dma);
- err_unmap_tx:
- pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
- sis_priv->tx_ring_dma);
- err_out_cleardev:
- pci_set_drvdata(pci_dev, NULL);
- pci_release_regions(pci_dev);
- err_out:
- free_netdev(net_dev);
- return ret;
-}
-
-/**
- * sis900_mii_probe - Probe MII PHY for sis900
- * @net_dev: the net device to probe for
- *
- * Search for total of 32 possible mii phy addresses.
- * Identify and set current phy if found one,
- * return error if it failed to found.
- */
-
-static int __devinit sis900_mii_probe(struct net_device * net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- const char *dev_name = pci_name(sis_priv->pci_dev);
- u16 poll_bit = MII_STAT_LINK, status = 0;
- unsigned long timeout = jiffies + 5 * HZ;
- int phy_addr;
-
- sis_priv->mii = NULL;
-
- /* search for total of 32 possible mii phy addresses */
- for (phy_addr = 0; phy_addr < 32; phy_addr++) {
- struct mii_phy * mii_phy = NULL;
- u16 mii_status;
- int i;
-
- mii_phy = NULL;
- for(i = 0; i < 2; i++)
- mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
-
- if (mii_status == 0xffff || mii_status == 0x0000) {
- if (netif_msg_probe(sis_priv))
- printk(KERN_DEBUG "%s: MII at address %d"
- " not accessible\n",
- dev_name, phy_addr);
- continue;
- }
-
- if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
- printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
- mii_phy = sis_priv->first_mii;
- while (mii_phy) {
- struct mii_phy *phy;
- phy = mii_phy;
- mii_phy = mii_phy->next;
- kfree(phy);
- }
- return 0;
- }
-
- mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
- mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
- mii_phy->phy_addr = phy_addr;
- mii_phy->status = mii_status;
- mii_phy->next = sis_priv->mii;
- sis_priv->mii = mii_phy;
- sis_priv->first_mii = mii_phy;
-
- for (i = 0; mii_chip_table[i].phy_id1; i++)
- if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
- ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
- mii_phy->phy_types = mii_chip_table[i].phy_types;
- if (mii_chip_table[i].phy_types == MIX)
- mii_phy->phy_types =
- (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
- printk(KERN_INFO "%s: %s transceiver found "
- "at address %d.\n",
- dev_name,
- mii_chip_table[i].name,
- phy_addr);
- break;
- }
-
- if( !mii_chip_table[i].phy_id1 ) {
- printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
- dev_name, phy_addr);
- mii_phy->phy_types = UNKNOWN;
- }
- }
-
- if (sis_priv->mii == NULL) {
- printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
- return 0;
- }
-
- /* select default PHY for mac */
- sis_priv->mii = NULL;
- sis900_default_phy( net_dev );
-
- /* Reset phy if default phy is internal sis900 */
- if ((sis_priv->mii->phy_id0 == 0x001D) &&
- ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
- status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
-
- /* workaround for ICS1893 PHY */
- if ((sis_priv->mii->phy_id0 == 0x0015) &&
- ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
- mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
-
- if(status & MII_STAT_LINK){
- while (poll_bit) {
- yield();
-
- poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
- if (time_after_eq(jiffies, timeout)) {
- printk(KERN_WARNING "%s: reset phy and link down now\n",
- dev_name);
- return -ETIME;
- }
- }
- }
-
- if (sis_priv->chipset_rev == SIS630E_900_REV) {
- /* SiS 630E has some bugs on default value of PHY registers */
- mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
- mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
- mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
- mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
- //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
- }
-
- if (sis_priv->mii->status & MII_STAT_LINK)
- netif_carrier_on(net_dev);
- else
- netif_carrier_off(net_dev);
-
- return 1;
-}
-
-/**
- * sis900_default_phy - Select default PHY for sis900 mac.
- * @net_dev: the net device to probe for
- *
- * Select first detected PHY with link as default.
- * If no one is link on, select PHY whose types is HOME as default.
- * If HOME doesn't exist, select LAN.
- */
-
-static u16 sis900_default_phy(struct net_device * net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- struct mii_phy *phy = NULL, *phy_home = NULL,
- *default_phy = NULL, *phy_lan = NULL;
- u16 status;
-
- for (phy=sis_priv->first_mii; phy; phy=phy->next) {
- status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
- status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
-
- /* Link ON & Not select default PHY & not ghost PHY */
- if ((status & MII_STAT_LINK) && !default_phy &&
- (phy->phy_types != UNKNOWN))
- default_phy = phy;
- else {
- status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
- mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
- status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
- if (phy->phy_types == HOME)
- phy_home = phy;
- else if(phy->phy_types == LAN)
- phy_lan = phy;
- }
- }
-
- if (!default_phy && phy_home)
- default_phy = phy_home;
- else if (!default_phy && phy_lan)
- default_phy = phy_lan;
- else if (!default_phy)
- default_phy = sis_priv->first_mii;
-
- if (sis_priv->mii != default_phy) {
- sis_priv->mii = default_phy;
- sis_priv->cur_phy = default_phy->phy_addr;
- printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
- pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
- }
-
- sis_priv->mii_info.phy_id = sis_priv->cur_phy;
-
- status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
- status &= (~MII_CNTL_ISOLATE);
-
- mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
- status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
- status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
-
- return status;
-}
-
-
-/**
- * sis900_set_capability - set the media capability of network adapter.
- * @net_dev : the net device to probe for
- * @phy : default PHY
- *
- * Set the media capability of network adapter according to
- * mii status register. It's necessary before auto-negotiate.
- */
-
-static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
-{
- u16 cap;
- u16 status;
-
- status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
- status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
-
- cap = MII_NWAY_CSMA_CD |
- ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
- ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
- ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
- ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
-
- mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
-}
-
-
-/* Delay between EEPROM clock transitions. */
-#define eeprom_delay() inl(ee_addr)
-
-/**
- * read_eeprom - Read Serial EEPROM
- * @ioaddr: base i/o address
- * @location: the EEPROM location to read
- *
- * Read Serial EEPROM through EEPROM Access Register.
- * Note that location is in word (16 bits) unit
- */
-
-static u16 __devinit read_eeprom(long ioaddr, int location)
-{
- int i;
- u16 retval = 0;
- long ee_addr = ioaddr + mear;
- u32 read_cmd = location | EEread;
-
- outl(0, ee_addr);
- eeprom_delay();
- outl(EECS, ee_addr);
- eeprom_delay();
-
- /* Shift the read command (9) bits out. */
- for (i = 8; i >= 0; i--) {
- u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
- outl(dataval, ee_addr);
- eeprom_delay();
- outl(dataval | EECLK, ee_addr);
- eeprom_delay();
- }
- outl(EECS, ee_addr);
- eeprom_delay();
-
- /* read the 16-bits data in */
- for (i = 16; i > 0; i--) {
- outl(EECS, ee_addr);
- eeprom_delay();
- outl(EECS | EECLK, ee_addr);
- eeprom_delay();
- retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
- eeprom_delay();
- }
-
- /* Terminate the EEPROM access. */
- outl(0, ee_addr);
- eeprom_delay();
-
- return retval;
-}
-
-/* Read and write the MII management registers using software-generated
- serial MDIO protocol. Note that the command bits and data bits are
- send out separately */
-#define mdio_delay() inl(mdio_addr)
-
-static void mdio_idle(long mdio_addr)
-{
- outl(MDIO | MDDIR, mdio_addr);
- mdio_delay();
- outl(MDIO | MDDIR | MDC, mdio_addr);
-}
-
-/* Syncronize the MII management interface by shifting 32 one bits out. */
-static void mdio_reset(long mdio_addr)
-{
- int i;
-
- for (i = 31; i >= 0; i--) {
- outl(MDDIR | MDIO, mdio_addr);
- mdio_delay();
- outl(MDDIR | MDIO | MDC, mdio_addr);
- mdio_delay();
- }
-}
-
-/**
- * mdio_read - read MII PHY register
- * @net_dev: the net device to read
- * @phy_id: the phy address to read
- * @location: the phy regiester id to read
- *
- * Read MII registers through MDIO and MDC
- * using MDIO management frame structure and protocol(defined by ISO/IEC).
- * Please see SiS7014 or ICS spec
- */
-
-static int mdio_read(struct net_device *net_dev, int phy_id, int location)
-{
- long mdio_addr = net_dev->base_addr + mear;
- int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
- u16 retval = 0;
- int i;
-
- mdio_reset(mdio_addr);
- mdio_idle(mdio_addr);
-
- for (i = 15; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
- outl(dataval, mdio_addr);
- mdio_delay();
- outl(dataval | MDC, mdio_addr);
- mdio_delay();
- }
-
- /* Read the 16 data bits. */
- for (i = 16; i > 0; i--) {
- outl(0, mdio_addr);
- mdio_delay();
- retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
- outl(MDC, mdio_addr);
- mdio_delay();
- }
- outl(0x00, mdio_addr);
-
- return retval;
-}
-
-/**
- * mdio_write - write MII PHY register
- * @net_dev: the net device to write
- * @phy_id: the phy address to write
- * @location: the phy regiester id to write
- * @value: the register value to write with
- *
- * Write MII registers with @value through MDIO and MDC
- * using MDIO management frame structure and protocol(defined by ISO/IEC)
- * please see SiS7014 or ICS spec
- */
-
-static void mdio_write(struct net_device *net_dev, int phy_id, int location,
- int value)
-{
- long mdio_addr = net_dev->base_addr + mear;
- int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
- int i;
-
- mdio_reset(mdio_addr);
- mdio_idle(mdio_addr);
-
- /* Shift the command bits out. */
- for (i = 15; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
- outb(dataval, mdio_addr);
- mdio_delay();
- outb(dataval | MDC, mdio_addr);
- mdio_delay();
- }
- mdio_delay();
-
- /* Shift the value bits out. */
- for (i = 15; i >= 0; i--) {
- int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
- outl(dataval, mdio_addr);
- mdio_delay();
- outl(dataval | MDC, mdio_addr);
- mdio_delay();
- }
- mdio_delay();
-
- /* Clear out extra bits. */
- for (i = 2; i > 0; i--) {
- outb(0, mdio_addr);
- mdio_delay();
- outb(MDC, mdio_addr);
- mdio_delay();
- }
- outl(0x00, mdio_addr);
-}
-
-
-/**
- * sis900_reset_phy - reset sis900 mii phy.
- * @net_dev: the net device to write
- * @phy_addr: default phy address
- *
- * Some specific phy can't work properly without reset.
- * This function will be called during initialization and
- * link status change from ON to DOWN.
- */
-
-static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
-{
- int i;
- u16 status;
-
- for (i = 0; i < 2; i++)
- status = mdio_read(net_dev, phy_addr, MII_STATUS);
-
- mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
-
- return status;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling 'interrupt' - used by things like netconsole to send skbs
- * without having to re-enable interrupts. It's not called while
- * the interrupt routine is executing.
-*/
-static void sis900_poll(struct net_device *dev)
-{
- disable_irq(dev->irq);
- sis900_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-/**
- * sis900_open - open sis900 device
- * @net_dev: the net device to open
- *
- * Do some initialization and start net interface.
- * enable interrupts and set sis900 timer.
- */
-
-static int
-sis900_open(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- int ret;
-
- /* Soft reset the chip. */
- sis900_reset(net_dev);
-
- /* Equalizer workaround Rule */
- sis630_set_eq(net_dev, sis_priv->chipset_rev);
-
- ret = request_irq(net_dev->irq, sis900_interrupt, IRQF_SHARED,
- net_dev->name, net_dev);
- if (ret)
- return ret;
-
- sis900_init_rxfilter(net_dev);
-
- sis900_init_tx_ring(net_dev);
- sis900_init_rx_ring(net_dev);
-
- set_rx_mode(net_dev);
-
- netif_start_queue(net_dev);
-
- /* Workaround for EDB */
- sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
-
- /* Enable all known interrupts by setting the interrupt mask. */
- outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
- outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
- outl(IE, ioaddr + ier);
-
- sis900_check_mode(net_dev, sis_priv->mii);
-
- /* Set the timer to switch to check for link beat and perhaps switch
- to an alternate media type. */
- init_timer(&sis_priv->timer);
- sis_priv->timer.expires = jiffies + HZ;
- sis_priv->timer.data = (unsigned long)net_dev;
- sis_priv->timer.function = sis900_timer;
- add_timer(&sis_priv->timer);
-
- return 0;
-}
-
-/**
- * sis900_init_rxfilter - Initialize the Rx filter
- * @net_dev: the net device to initialize for
- *
- * Set receive filter address to our MAC address
- * and enable packet filtering.
- */
-
-static void
-sis900_init_rxfilter (struct net_device * net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- u32 rfcrSave;
- u32 i;
-
- rfcrSave = inl(rfcr + ioaddr);
-
- /* disable packet filtering before setting filter */
- outl(rfcrSave & ~RFEN, rfcr + ioaddr);
-
- /* load MAC addr to filter data register */
- for (i = 0 ; i < 3 ; i++) {
- u32 w;
-
- w = (u32) *((u16 *)(net_dev->dev_addr)+i);
- outl((i << RFADDR_shift), ioaddr + rfcr);
- outl(w, ioaddr + rfdr);
-
- if (netif_msg_hw(sis_priv)) {
- printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
- net_dev->name, i, inl(ioaddr + rfdr));
- }
- }
-
- /* enable packet filtering */
- outl(rfcrSave | RFEN, rfcr + ioaddr);
-}
-
-/**
- * sis900_init_tx_ring - Initialize the Tx descriptor ring
- * @net_dev: the net device to initialize for
- *
- * Initialize the Tx descriptor ring,
- */
-
-static void
-sis900_init_tx_ring(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- int i;
-
- sis_priv->tx_full = 0;
- sis_priv->dirty_tx = sis_priv->cur_tx = 0;
-
- for (i = 0; i < NUM_TX_DESC; i++) {
- sis_priv->tx_skbuff[i] = NULL;
-
- sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
- ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
- sis_priv->tx_ring[i].cmdsts = 0;
- sis_priv->tx_ring[i].bufptr = 0;
- }
-
- /* load Transmit Descriptor Register */
- outl(sis_priv->tx_ring_dma, ioaddr + txdp);
- if (netif_msg_hw(sis_priv))
- printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
- net_dev->name, inl(ioaddr + txdp));
-}
-
-/**
- * sis900_init_rx_ring - Initialize the Rx descriptor ring
- * @net_dev: the net device to initialize for
- *
- * Initialize the Rx descriptor ring,
- * and pre-allocate recevie buffers (socket buffer)
- */
-
-static void
-sis900_init_rx_ring(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- int i;
-
- sis_priv->cur_rx = 0;
- sis_priv->dirty_rx = 0;
-
- /* init RX descriptor */
- for (i = 0; i < NUM_RX_DESC; i++) {
- sis_priv->rx_skbuff[i] = NULL;
-
- sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
- ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
- sis_priv->rx_ring[i].cmdsts = 0;
- sis_priv->rx_ring[i].bufptr = 0;
- }
-
- /* allocate sock buffers */
- for (i = 0; i < NUM_RX_DESC; i++) {
- struct sk_buff *skb;
-
- if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
- /* not enough memory for skbuff, this makes a "hole"
- on the buffer ring, it is not clear how the
- hardware will react to this kind of degenerated
- buffer */
- break;
- }
- sis_priv->rx_skbuff[i] = skb;
- sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
- sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
- skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- }
- sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
-
- /* load Receive Descriptor Register */
- outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
- if (netif_msg_hw(sis_priv))
- printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
- net_dev->name, inl(ioaddr + rxdp));
-}
-
-/**
- * sis630_set_eq - set phy equalizer value for 630 LAN
- * @net_dev: the net device to set equalizer value
- * @revision: 630 LAN revision number
- *
- * 630E equalizer workaround rule(Cyrus Huang 08/15)
- * PHY register 14h(Test)
- * Bit 14: 0 -- Automatically detect (default)
- * 1 -- Manually set Equalizer filter
- * Bit 13: 0 -- (Default)
- * 1 -- Speed up convergence of equalizer setting
- * Bit 9 : 0 -- (Default)
- * 1 -- Disable Baseline Wander
- * Bit 3~7 -- Equalizer filter setting
- * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
- * Then calculate equalizer value
- * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
- * Link Off:Set Bit 13 to 1, Bit 14 to 0
- * Calculate Equalizer value:
- * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
- * When the equalizer is stable, this value is not a fixed value. It will be within
- * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
- * 0 <= max <= 4 --> set equalizer to max
- * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
- * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
- */
-
-static void sis630_set_eq(struct net_device *net_dev, u8 revision)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- u16 reg14h, eq_value=0, max_value=0, min_value=0;
- int i, maxcount=10;
-
- if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
- revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
- return;
-
- if (netif_carrier_ok(net_dev)) {
- reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
- mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
- (0x2200 | reg14h) & 0xBFFF);
- for (i=0; i < maxcount; i++) {
- eq_value = (0x00F8 & mdio_read(net_dev,
- sis_priv->cur_phy, MII_RESV)) >> 3;
- if (i == 0)
- max_value=min_value=eq_value;
- max_value = (eq_value > max_value) ?
- eq_value : max_value;
- min_value = (eq_value < min_value) ?
- eq_value : min_value;
- }
- /* 630E rule to determine the equalizer value */
- if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
- revision == SIS630ET_900_REV) {
- if (max_value < 5)
- eq_value = max_value;
- else if (max_value >= 5 && max_value < 15)
- eq_value = (max_value == min_value) ?
- max_value+2 : max_value+1;
- else if (max_value >= 15)
- eq_value=(max_value == min_value) ?
- max_value+6 : max_value+5;
- }
- /* 630B0&B1 rule to determine the equalizer value */
- if (revision == SIS630A_900_REV &&
- (sis_priv->host_bridge_rev == SIS630B0 ||
- sis_priv->host_bridge_rev == SIS630B1)) {
- if (max_value == 0)
- eq_value = 3;
- else
- eq_value = (max_value + min_value + 1)/2;
- }
- /* write equalizer value and setting */
- reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
- reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
- reg14h = (reg14h | 0x6000) & 0xFDFF;
- mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
- } else {
- reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
- if (revision == SIS630A_900_REV &&
- (sis_priv->host_bridge_rev == SIS630B0 ||
- sis_priv->host_bridge_rev == SIS630B1))
- mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
- (reg14h | 0x2200) & 0xBFFF);
- else
- mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
- (reg14h | 0x2000) & 0xBFFF);
- }
-}
-
-/**
- * sis900_timer - sis900 timer routine
- * @data: pointer to sis900 net device
- *
- * On each timer ticks we check two things,
- * link status (ON/OFF) and link mode (10/100/Full/Half)
- */
-
-static void sis900_timer(unsigned long data)
-{
- struct net_device *net_dev = (struct net_device *)data;
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- struct mii_phy *mii_phy = sis_priv->mii;
- static const int next_tick = 5*HZ;
- u16 status;
-
- if (!sis_priv->autong_complete){
- int uninitialized_var(speed), duplex = 0;
-
- sis900_read_mode(net_dev, &speed, &duplex);
- if (duplex){
- sis900_set_mode(net_dev->base_addr, speed, duplex);
- sis630_set_eq(net_dev, sis_priv->chipset_rev);
- netif_start_queue(net_dev);
- }
-
- sis_priv->timer.expires = jiffies + HZ;
- add_timer(&sis_priv->timer);
- return;
- }
-
- status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
- status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
-
- /* Link OFF -> ON */
- if (!netif_carrier_ok(net_dev)) {
- LookForLink:
- /* Search for new PHY */
- status = sis900_default_phy(net_dev);
- mii_phy = sis_priv->mii;
-
- if (status & MII_STAT_LINK){
- sis900_check_mode(net_dev, mii_phy);
- netif_carrier_on(net_dev);
- }
- } else {
- /* Link ON -> OFF */
- if (!(status & MII_STAT_LINK)){
- netif_carrier_off(net_dev);
- if(netif_msg_link(sis_priv))
- printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
-
- /* Change mode issue */
- if ((mii_phy->phy_id0 == 0x001D) &&
- ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
- sis900_reset_phy(net_dev, sis_priv->cur_phy);
-
- sis630_set_eq(net_dev, sis_priv->chipset_rev);
-
- goto LookForLink;
- }
- }
-
- sis_priv->timer.expires = jiffies + next_tick;
- add_timer(&sis_priv->timer);
-}
-
-/**
- * sis900_check_mode - check the media mode for sis900
- * @net_dev: the net device to be checked
- * @mii_phy: the mii phy
- *
- * Older driver gets the media mode from mii status output
- * register. Now we set our media capability and auto-negotiate
- * to get the upper bound of speed and duplex between two ends.
- * If the types of mii phy is HOME, it doesn't need to auto-negotiate
- * and autong_complete should be set to 1.
- */
-
-static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- int speed, duplex;
-
- if (mii_phy->phy_types == LAN) {
- outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
- sis900_set_capability(net_dev , mii_phy);
- sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
- } else {
- outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
- speed = HW_SPEED_HOME;
- duplex = FDX_CAPABLE_HALF_SELECTED;
- sis900_set_mode(ioaddr, speed, duplex);
- sis_priv->autong_complete = 1;
- }
-}
-
-/**
- * sis900_set_mode - Set the media mode of mac register.
- * @ioaddr: the address of the device
- * @speed : the transmit speed to be determined
- * @duplex: the duplex mode to be determined
- *
- * Set the media mode of mac register txcfg/rxcfg according to
- * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
- * bus is used instead of PCI bus. When this bit is set 1, the
- * Max DMA Burst Size for TX/RX DMA should be no larger than 16
- * double words.
- */
-
-static void sis900_set_mode (long ioaddr, int speed, int duplex)
-{
- u32 tx_flags = 0, rx_flags = 0;
-
- if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
- tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
- (TX_FILL_THRESH << TxFILLT_shift);
- rx_flags = DMA_BURST_64 << RxMXDMA_shift;
- } else {
- tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
- (TX_FILL_THRESH << TxFILLT_shift);
- rx_flags = DMA_BURST_512 << RxMXDMA_shift;
- }
-
- if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
- rx_flags |= (RxDRNT_10 << RxDRNT_shift);
- tx_flags |= (TxDRNT_10 << TxDRNT_shift);
- } else {
- rx_flags |= (RxDRNT_100 << RxDRNT_shift);
- tx_flags |= (TxDRNT_100 << TxDRNT_shift);
- }
-
- if (duplex == FDX_CAPABLE_FULL_SELECTED) {
- tx_flags |= (TxCSI | TxHBI);
- rx_flags |= RxATX;
- }
-
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
- /* Can accept Jumbo packet */
- rx_flags |= RxAJAB;
-#endif
-
- outl (tx_flags, ioaddr + txcfg);
- outl (rx_flags, ioaddr + rxcfg);
-}
-
-/**
- * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
- * @net_dev: the net device to read mode for
- * @phy_addr: mii phy address
- *
- * If the adapter is link-on, set the auto-negotiate enable/reset bit.
- * autong_complete should be set to 0 when starting auto-negotiation.
- * autong_complete should be set to 1 if we didn't start auto-negotiation.
- * sis900_timer will wait for link on again if autong_complete = 0.
- */
-
-static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- int i = 0;
- u32 status;
-
- for (i = 0; i < 2; i++)
- status = mdio_read(net_dev, phy_addr, MII_STATUS);
-
- if (!(status & MII_STAT_LINK)){
- if(netif_msg_link(sis_priv))
- printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
- sis_priv->autong_complete = 1;
- netif_carrier_off(net_dev);
- return;
- }
-
- /* (Re)start AutoNegotiate */
- mdio_write(net_dev, phy_addr, MII_CONTROL,
- MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
- sis_priv->autong_complete = 0;
-}
-
-
-/**
- * sis900_read_mode - read media mode for sis900 internal phy
- * @net_dev: the net device to read mode for
- * @speed : the transmit speed to be determined
- * @duplex : the duplex mode to be determined
- *
- * The capability of remote end will be put in mii register autorec
- * after auto-negotiation. Use AND operation to get the upper bound
- * of speed and duplex between two ends.
- */
-
-static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- struct mii_phy *phy = sis_priv->mii;
- int phy_addr = sis_priv->cur_phy;
- u32 status;
- u16 autoadv, autorec;
- int i;
-
- for (i = 0; i < 2; i++)
- status = mdio_read(net_dev, phy_addr, MII_STATUS);
-
- if (!(status & MII_STAT_LINK))
- return;
-
- /* AutoNegotiate completed */
- autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
- autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
- status = autoadv & autorec;
-
- *speed = HW_SPEED_10_MBPS;
- *duplex = FDX_CAPABLE_HALF_SELECTED;
-
- if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
- *speed = HW_SPEED_100_MBPS;
- if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
- *duplex = FDX_CAPABLE_FULL_SELECTED;
-
- sis_priv->autong_complete = 1;
-
- /* Workaround for Realtek RTL8201 PHY issue */
- if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
- if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
- *duplex = FDX_CAPABLE_FULL_SELECTED;
- if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
- *speed = HW_SPEED_100_MBPS;
- }
-
- if(netif_msg_link(sis_priv))
- printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
- net_dev->name,
- *speed == HW_SPEED_100_MBPS ?
- "100mbps" : "10mbps",
- *duplex == FDX_CAPABLE_FULL_SELECTED ?
- "full" : "half");
-}
-
-/**
- * sis900_tx_timeout - sis900 transmit timeout routine
- * @net_dev: the net device to transmit
- *
- * print transmit timeout status
- * disable interrupts and do some tasks
- */
-
-static void sis900_tx_timeout(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- unsigned long flags;
- int i;
-
- if(netif_msg_tx_err(sis_priv))
- printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
- net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
-
- /* Disable interrupts by clearing the interrupt mask. */
- outl(0x0000, ioaddr + imr);
-
- /* use spinlock to prevent interrupt handler accessing buffer ring */
- spin_lock_irqsave(&sis_priv->lock, flags);
-
- /* discard unsent packets */
- sis_priv->dirty_tx = sis_priv->cur_tx = 0;
- for (i = 0; i < NUM_TX_DESC; i++) {
- struct sk_buff *skb = sis_priv->tx_skbuff[i];
-
- if (skb) {
- pci_unmap_single(sis_priv->pci_dev,
- sis_priv->tx_ring[i].bufptr, skb->len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(skb);
- sis_priv->tx_skbuff[i] = NULL;
- sis_priv->tx_ring[i].cmdsts = 0;
- sis_priv->tx_ring[i].bufptr = 0;
- net_dev->stats.tx_dropped++;
- }
- }
- sis_priv->tx_full = 0;
- netif_wake_queue(net_dev);
-
- spin_unlock_irqrestore(&sis_priv->lock, flags);
-
- net_dev->trans_start = jiffies; /* prevent tx timeout */
-
- /* load Transmit Descriptor Register */
- outl(sis_priv->tx_ring_dma, ioaddr + txdp);
-
- /* Enable all known interrupts by setting the interrupt mask. */
- outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
-}
-
-/**
- * sis900_start_xmit - sis900 start transmit routine
- * @skb: socket buffer pointer to put the data being transmitted
- * @net_dev: the net device to transmit with
- *
- * Set the transmit buffer descriptor,
- * and write TxENA to enable transmit state machine.
- * tell upper layer if the buffer is full
- */
-
-static netdev_tx_t
-sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- unsigned int entry;
- unsigned long flags;
- unsigned int index_cur_tx, index_dirty_tx;
- unsigned int count_dirty_tx;
-
- /* Don't transmit data before the complete of auto-negotiation */
- if(!sis_priv->autong_complete){
- netif_stop_queue(net_dev);
- return NETDEV_TX_BUSY;
- }
-
- spin_lock_irqsave(&sis_priv->lock, flags);
-
- /* Calculate the next Tx descriptor entry. */
- entry = sis_priv->cur_tx % NUM_TX_DESC;
- sis_priv->tx_skbuff[entry] = skb;
-
- /* set the transmit buffer descriptor and enable Transmit State Machine */
- sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
- skb->data, skb->len, PCI_DMA_TODEVICE);
- sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
- outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
-
- sis_priv->cur_tx ++;
- index_cur_tx = sis_priv->cur_tx;
- index_dirty_tx = sis_priv->dirty_tx;
-
- for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
- count_dirty_tx ++;
-
- if (index_cur_tx == index_dirty_tx) {
- /* dirty_tx is met in the cycle of cur_tx, buffer full */
- sis_priv->tx_full = 1;
- netif_stop_queue(net_dev);
- } else if (count_dirty_tx < NUM_TX_DESC) {
- /* Typical path, tell upper layer that more transmission is possible */
- netif_start_queue(net_dev);
- } else {
- /* buffer full, tell upper layer no more transmission */
- sis_priv->tx_full = 1;
- netif_stop_queue(net_dev);
- }
-
- spin_unlock_irqrestore(&sis_priv->lock, flags);
-
- if (netif_msg_tx_queued(sis_priv))
- printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
- "to slot %d.\n",
- net_dev->name, skb->data, (int)skb->len, entry);
-
- return NETDEV_TX_OK;
-}
-
-/**
- * sis900_interrupt - sis900 interrupt handler
- * @irq: the irq number
- * @dev_instance: the client data object
- *
- * The interrupt handler does all of the Rx thread work,
- * and cleans up after the Tx thread
- */
-
-static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
-{
- struct net_device *net_dev = dev_instance;
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- int boguscnt = max_interrupt_work;
- long ioaddr = net_dev->base_addr;
- u32 status;
- unsigned int handled = 0;
-
- spin_lock (&sis_priv->lock);
-
- do {
- status = inl(ioaddr + isr);
-
- if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
- /* nothing intresting happened */
- break;
- handled = 1;
-
- /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
- if (status & (RxORN | RxERR | RxOK))
- /* Rx interrupt */
- sis900_rx(net_dev);
-
- if (status & (TxURN | TxERR | TxIDLE))
- /* Tx interrupt */
- sis900_finish_xmit(net_dev);
-
- /* something strange happened !!! */
- if (status & HIBERR) {
- if(netif_msg_intr(sis_priv))
- printk(KERN_INFO "%s: Abnormal interrupt, "
- "status %#8.8x.\n", net_dev->name, status);
- break;
- }
- if (--boguscnt < 0) {
- if(netif_msg_intr(sis_priv))
- printk(KERN_INFO "%s: Too much work at interrupt, "
- "interrupt status = %#8.8x.\n",
- net_dev->name, status);
- break;
- }
- } while (1);
-
- if(netif_msg_intr(sis_priv))
- printk(KERN_DEBUG "%s: exiting interrupt, "
- "interrupt status = 0x%#8.8x.\n",
- net_dev->name, inl(ioaddr + isr));
-
- spin_unlock (&sis_priv->lock);
- return IRQ_RETVAL(handled);
-}
-
-/**
- * sis900_rx - sis900 receive routine
- * @net_dev: the net device which receives data
- *
- * Process receive interrupt events,
- * put buffer to higher layer and refill buffer pool
- * Note: This function is called by interrupt handler,
- * don't do "too much" work here
- */
-
-static int sis900_rx(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
- u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
- int rx_work_limit;
-
- if (netif_msg_rx_status(sis_priv))
- printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
- "status:0x%8.8x\n",
- sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
- rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
-
- while (rx_status & OWN) {
- unsigned int rx_size;
- unsigned int data_size;
-
- if (--rx_work_limit < 0)
- break;
-
- data_size = rx_status & DSIZE;
- rx_size = data_size - CRC_SIZE;
-
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
- /* ``TOOLONG'' flag means jumbo packet received. */
- if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
- rx_status &= (~ ((unsigned int)TOOLONG));
-#endif
-
- if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
- /* corrupted packet received */
- if (netif_msg_rx_err(sis_priv))
- printk(KERN_DEBUG "%s: Corrupted packet "
- "received, buffer status = 0x%8.8x/%d.\n",
- net_dev->name, rx_status, data_size);
- net_dev->stats.rx_errors++;
- if (rx_status & OVERRUN)
- net_dev->stats.rx_over_errors++;
- if (rx_status & (TOOLONG|RUNT))
- net_dev->stats.rx_length_errors++;
- if (rx_status & (RXISERR | FAERR))
- net_dev->stats.rx_frame_errors++;
- if (rx_status & CRCERR)
- net_dev->stats.rx_crc_errors++;
- /* reset buffer descriptor state */
- sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
- } else {
- struct sk_buff * skb;
- struct sk_buff * rx_skb;
-
- pci_unmap_single(sis_priv->pci_dev,
- sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
- PCI_DMA_FROMDEVICE);
-
- /* refill the Rx buffer, what if there is not enough
- * memory for new socket buffer ?? */
- if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
- /*
- * Not enough memory to refill the buffer
- * so we need to recycle the old one so
- * as to avoid creating a memory hole
- * in the rx ring
- */
- skb = sis_priv->rx_skbuff[entry];
- net_dev->stats.rx_dropped++;
- goto refill_rx_ring;
- }
-
- /* This situation should never happen, but due to
- some unknown bugs, it is possible that
- we are working on NULL sk_buff :-( */
- if (sis_priv->rx_skbuff[entry] == NULL) {
- if (netif_msg_rx_err(sis_priv))
- printk(KERN_WARNING "%s: NULL pointer "
- "encountered in Rx ring\n"
- "cur_rx:%4.4d, dirty_rx:%4.4d\n",
- net_dev->name, sis_priv->cur_rx,
- sis_priv->dirty_rx);
- dev_kfree_skb(skb);
- break;
- }
-
- /* give the socket buffer to upper layers */
- rx_skb = sis_priv->rx_skbuff[entry];
- skb_put(rx_skb, rx_size);
- rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
- netif_rx(rx_skb);
-
- /* some network statistics */
- if ((rx_status & BCAST) == MCAST)
- net_dev->stats.multicast++;
- net_dev->stats.rx_bytes += rx_size;
- net_dev->stats.rx_packets++;
- sis_priv->dirty_rx++;
-refill_rx_ring:
- sis_priv->rx_skbuff[entry] = skb;
- sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
- sis_priv->rx_ring[entry].bufptr =
- pci_map_single(sis_priv->pci_dev, skb->data,
- RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- }
- sis_priv->cur_rx++;
- entry = sis_priv->cur_rx % NUM_RX_DESC;
- rx_status = sis_priv->rx_ring[entry].cmdsts;
- } // while
-
- /* refill the Rx buffer, what if the rate of refilling is slower
- * than consuming ?? */
- for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
- struct sk_buff *skb;
-
- entry = sis_priv->dirty_rx % NUM_RX_DESC;
-
- if (sis_priv->rx_skbuff[entry] == NULL) {
- if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
- /* not enough memory for skbuff, this makes a
- * "hole" on the buffer ring, it is not clear
- * how the hardware will react to this kind
- * of degenerated buffer */
- if (netif_msg_rx_err(sis_priv))
- printk(KERN_INFO "%s: Memory squeeze, "
- "deferring packet.\n",
- net_dev->name);
- net_dev->stats.rx_dropped++;
- break;
- }
- sis_priv->rx_skbuff[entry] = skb;
- sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
- sis_priv->rx_ring[entry].bufptr =
- pci_map_single(sis_priv->pci_dev, skb->data,
- RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- }
- }
- /* re-enable the potentially idle receive state matchine */
- outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
-
- return 0;
-}
-
-/**
- * sis900_finish_xmit - finish up transmission of packets
- * @net_dev: the net device to be transmitted on
- *
- * Check for error condition and free socket buffer etc
- * schedule for more transmission as needed
- * Note: This function is called by interrupt handler,
- * don't do "too much" work here
- */
-
-static void sis900_finish_xmit (struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
-
- for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
- struct sk_buff *skb;
- unsigned int entry;
- u32 tx_status;
-
- entry = sis_priv->dirty_tx % NUM_TX_DESC;
- tx_status = sis_priv->tx_ring[entry].cmdsts;
-
- if (tx_status & OWN) {
- /* The packet is not transmitted yet (owned by hardware) !
- * Note: the interrupt is generated only when Tx Machine
- * is idle, so this is an almost impossible case */
- break;
- }
-
- if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
- /* packet unsuccessfully transmitted */
- if (netif_msg_tx_err(sis_priv))
- printk(KERN_DEBUG "%s: Transmit "
- "error, Tx status %8.8x.\n",
- net_dev->name, tx_status);
- net_dev->stats.tx_errors++;
- if (tx_status & UNDERRUN)
- net_dev->stats.tx_fifo_errors++;
- if (tx_status & ABORT)
- net_dev->stats.tx_aborted_errors++;
- if (tx_status & NOCARRIER)
- net_dev->stats.tx_carrier_errors++;
- if (tx_status & OWCOLL)
- net_dev->stats.tx_window_errors++;
- } else {
- /* packet successfully transmitted */
- net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
- net_dev->stats.tx_bytes += tx_status & DSIZE;
- net_dev->stats.tx_packets++;
- }
- /* Free the original skb. */
- skb = sis_priv->tx_skbuff[entry];
- pci_unmap_single(sis_priv->pci_dev,
- sis_priv->tx_ring[entry].bufptr, skb->len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(skb);
- sis_priv->tx_skbuff[entry] = NULL;
- sis_priv->tx_ring[entry].bufptr = 0;
- sis_priv->tx_ring[entry].cmdsts = 0;
- }
-
- if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
- sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
- /* The ring is no longer full, clear tx_full and schedule
- * more transmission by netif_wake_queue(net_dev) */
- sis_priv->tx_full = 0;
- netif_wake_queue (net_dev);
- }
-}
-
-/**
- * sis900_close - close sis900 device
- * @net_dev: the net device to be closed
- *
- * Disable interrupts, stop the Tx and Rx Status Machine
- * free Tx and RX socket buffer
- */
-
-static int sis900_close(struct net_device *net_dev)
-{
- long ioaddr = net_dev->base_addr;
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- struct sk_buff *skb;
- int i;
-
- netif_stop_queue(net_dev);
-
- /* Disable interrupts by clearing the interrupt mask. */
- outl(0x0000, ioaddr + imr);
- outl(0x0000, ioaddr + ier);
-
- /* Stop the chip's Tx and Rx Status Machine */
- outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
-
- del_timer(&sis_priv->timer);
-
- free_irq(net_dev->irq, net_dev);
-
- /* Free Tx and RX skbuff */
- for (i = 0; i < NUM_RX_DESC; i++) {
- skb = sis_priv->rx_skbuff[i];
- if (skb) {
- pci_unmap_single(sis_priv->pci_dev,
- sis_priv->rx_ring[i].bufptr,
- RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- dev_kfree_skb(skb);
- sis_priv->rx_skbuff[i] = NULL;
- }
- }
- for (i = 0; i < NUM_TX_DESC; i++) {
- skb = sis_priv->tx_skbuff[i];
- if (skb) {
- pci_unmap_single(sis_priv->pci_dev,
- sis_priv->tx_ring[i].bufptr, skb->len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb(skb);
- sis_priv->tx_skbuff[i] = NULL;
- }
- }
-
- /* Green! Put the chip in low-power mode. */
-
- return 0;
-}
-
-/**
- * sis900_get_drvinfo - Return information about driver
- * @net_dev: the net device to probe
- * @info: container for info returned
- *
- * Process ethtool command such as "ehtool -i" to show information
- */
-
-static void sis900_get_drvinfo(struct net_device *net_dev,
- struct ethtool_drvinfo *info)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
-
- strcpy (info->driver, SIS900_MODULE_NAME);
- strcpy (info->version, SIS900_DRV_VERSION);
- strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
-}
-
-static u32 sis900_get_msglevel(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- return sis_priv->msg_enable;
-}
-
-static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- sis_priv->msg_enable = value;
-}
-
-static u32 sis900_get_link(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- return mii_link_ok(&sis_priv->mii_info);
-}
-
-static int sis900_get_settings(struct net_device *net_dev,
- struct ethtool_cmd *cmd)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- spin_lock_irq(&sis_priv->lock);
- mii_ethtool_gset(&sis_priv->mii_info, cmd);
- spin_unlock_irq(&sis_priv->lock);
- return 0;
-}
-
-static int sis900_set_settings(struct net_device *net_dev,
- struct ethtool_cmd *cmd)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- int rt;
- spin_lock_irq(&sis_priv->lock);
- rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
- spin_unlock_irq(&sis_priv->lock);
- return rt;
-}
-
-static int sis900_nway_reset(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- return mii_nway_restart(&sis_priv->mii_info);
-}
-
-/**
- * sis900_set_wol - Set up Wake on Lan registers
- * @net_dev: the net device to probe
- * @wol: container for info passed to the driver
- *
- * Process ethtool command "wol" to setup wake on lan features.
- * SiS900 supports sending WoL events if a correct packet is received,
- * but there is no simple way to filter them to only a subset (broadcast,
- * multicast, unicast or arp).
- */
-
-static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long pmctrl_addr = net_dev->base_addr + pmctrl;
- u32 cfgpmcsr = 0, pmctrl_bits = 0;
-
- if (wol->wolopts == 0) {
- pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
- cfgpmcsr &= ~PME_EN;
- pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
- outl(pmctrl_bits, pmctrl_addr);
- if (netif_msg_wol(sis_priv))
- printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
- return 0;
- }
-
- if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
- | WAKE_BCAST | WAKE_ARP))
- return -EINVAL;
-
- if (wol->wolopts & WAKE_MAGIC)
- pmctrl_bits |= MAGICPKT;
- if (wol->wolopts & WAKE_PHY)
- pmctrl_bits |= LINKON;
-
- outl(pmctrl_bits, pmctrl_addr);
-
- pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
- cfgpmcsr |= PME_EN;
- pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
- if (netif_msg_wol(sis_priv))
- printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
-
- return 0;
-}
-
-static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
-{
- long pmctrl_addr = net_dev->base_addr + pmctrl;
- u32 pmctrl_bits;
-
- pmctrl_bits = inl(pmctrl_addr);
- if (pmctrl_bits & MAGICPKT)
- wol->wolopts |= WAKE_MAGIC;
- if (pmctrl_bits & LINKON)
- wol->wolopts |= WAKE_PHY;
-
- wol->supported = (WAKE_PHY | WAKE_MAGIC);
-}
-
-static const struct ethtool_ops sis900_ethtool_ops = {
- .get_drvinfo = sis900_get_drvinfo,
- .get_msglevel = sis900_get_msglevel,
- .set_msglevel = sis900_set_msglevel,
- .get_link = sis900_get_link,
- .get_settings = sis900_get_settings,
- .set_settings = sis900_set_settings,
- .nway_reset = sis900_nway_reset,
- .get_wol = sis900_get_wol,
- .set_wol = sis900_set_wol
-};
-
-/**
- * mii_ioctl - process MII i/o control command
- * @net_dev: the net device to command for
- * @rq: parameter for command
- * @cmd: the i/o command
- *
- * Process MII command like read/write MII register
- */
-
-static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- struct mii_ioctl_data *data = if_mii(rq);
-
- switch(cmd) {
- case SIOCGMIIPHY: /* Get address of MII PHY in use. */
- data->phy_id = sis_priv->mii->phy_addr;
- /* Fall Through */
-
- case SIOCGMIIREG: /* Read MII PHY register. */
- data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
- return 0;
-
- case SIOCSMIIREG: /* Write MII PHY register. */
- mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
- return 0;
- default:
- return -EOPNOTSUPP;
- }
-}
-
-/**
- * sis900_set_config - Set media type by net_device.set_config
- * @dev: the net device for media type change
- * @map: ifmap passed by ifconfig
- *
- * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
- * we support only port changes. All other runtime configuration
- * changes will be ignored
- */
-
-static int sis900_set_config(struct net_device *dev, struct ifmap *map)
-{
- struct sis900_private *sis_priv = netdev_priv(dev);
- struct mii_phy *mii_phy = sis_priv->mii;
-
- u16 status;
-
- if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
- /* we switch on the ifmap->port field. I couldn't find anything
- * like a definition or standard for the values of that field.
- * I think the meaning of those values is device specific. But
- * since I would like to change the media type via the ifconfig
- * command I use the definition from linux/netdevice.h
- * (which seems to be different from the ifport(pcmcia) definition) */
- switch(map->port){
- case IF_PORT_UNKNOWN: /* use auto here */
- dev->if_port = map->port;
- /* we are going to change the media type, so the Link
- * will be temporary down and we need to reflect that
- * here. When the Link comes up again, it will be
- * sensed by the sis_timer procedure, which also does
- * all the rest for us */
- netif_carrier_off(dev);
-
- /* read current state */
- status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
-
- /* enable auto negotiation and reset the negotioation
- * (I don't really know what the auto negatiotiation
- * reset really means, but it sounds for me right to
- * do one here) */
- mdio_write(dev, mii_phy->phy_addr,
- MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
-
- break;
-
- case IF_PORT_10BASET: /* 10BaseT */
- dev->if_port = map->port;
-
- /* we are going to change the media type, so the Link
- * will be temporary down and we need to reflect that
- * here. When the Link comes up again, it will be
- * sensed by the sis_timer procedure, which also does
- * all the rest for us */
- netif_carrier_off(dev);
-
- /* set Speed to 10Mbps */
- /* read current state */
- status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
-
- /* disable auto negotiation and force 10MBit mode*/
- mdio_write(dev, mii_phy->phy_addr,
- MII_CONTROL, status & ~(MII_CNTL_SPEED |
- MII_CNTL_AUTO));
- break;
-
- case IF_PORT_100BASET: /* 100BaseT */
- case IF_PORT_100BASETX: /* 100BaseTx */
- dev->if_port = map->port;
-
- /* we are going to change the media type, so the Link
- * will be temporary down and we need to reflect that
- * here. When the Link comes up again, it will be
- * sensed by the sis_timer procedure, which also does
- * all the rest for us */
- netif_carrier_off(dev);
-
- /* set Speed to 100Mbps */
- /* disable auto negotiation and enable 100MBit Mode */
- status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
- mdio_write(dev, mii_phy->phy_addr,
- MII_CONTROL, (status & ~MII_CNTL_SPEED) |
- MII_CNTL_SPEED);
-
- break;
-
- case IF_PORT_10BASE2: /* 10Base2 */
- case IF_PORT_AUI: /* AUI */
- case IF_PORT_100BASEFX: /* 100BaseFx */
- /* These Modes are not supported (are they?)*/
- return -EOPNOTSUPP;
- break;
-
- default:
- return -EINVAL;
- }
- }
- return 0;
-}
-
-/**
- * sis900_mcast_bitnr - compute hashtable index
- * @addr: multicast address
- * @revision: revision id of chip
- *
- * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
- * hash table, which makes this function a little bit different from other drivers
- * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
- * multicast hash table.
- */
-
-static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
-{
-
- u32 crc = ether_crc(6, addr);
-
- /* leave 8 or 7 most siginifant bits */
- if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
- return (int)(crc >> 24);
- else
- return (int)(crc >> 25);
-}
-
-/**
- * set_rx_mode - Set SiS900 receive mode
- * @net_dev: the net device to be set
- *
- * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
- * And set the appropriate multicast filter.
- * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
- */
-
-static void set_rx_mode(struct net_device *net_dev)
-{
- long ioaddr = net_dev->base_addr;
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
- int i, table_entries;
- u32 rx_mode;
-
- /* 635 Hash Table entries = 256(2^16) */
- if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
- (sis_priv->chipset_rev == SIS900B_900_REV))
- table_entries = 16;
- else
- table_entries = 8;
-
- if (net_dev->flags & IFF_PROMISC) {
- /* Accept any kinds of packets */
- rx_mode = RFPromiscuous;
- for (i = 0; i < table_entries; i++)
- mc_filter[i] = 0xffff;
- } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
- (net_dev->flags & IFF_ALLMULTI)) {
- /* too many multicast addresses or accept all multicast packet */
- rx_mode = RFAAB | RFAAM;
- for (i = 0; i < table_entries; i++)
- mc_filter[i] = 0xffff;
- } else {
- /* Accept Broadcast packet, destination address matchs our
- * MAC address, use Receive Filter to reject unwanted MCAST
- * packets */
- struct netdev_hw_addr *ha;
- rx_mode = RFAAB;
-
- netdev_for_each_mc_addr(ha, net_dev) {
- unsigned int bit_nr;
-
- bit_nr = sis900_mcast_bitnr(ha->addr,
- sis_priv->chipset_rev);
- mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
- }
- }
-
- /* update Multicast Hash Table in Receive Filter */
- for (i = 0; i < table_entries; i++) {
- /* why plus 0x04 ??, That makes the correct value for hash table. */
- outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
- outl(mc_filter[i], ioaddr + rfdr);
- }
-
- outl(RFEN | rx_mode, ioaddr + rfcr);
-
- /* sis900 is capable of looping back packets at MAC level for
- * debugging purpose */
- if (net_dev->flags & IFF_LOOPBACK) {
- u32 cr_saved;
- /* We must disable Tx/Rx before setting loopback mode */
- cr_saved = inl(ioaddr + cr);
- outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
- /* enable loopback */
- outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
- outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
- /* restore cr */
- outl(cr_saved, ioaddr + cr);
- }
-}
-
-/**
- * sis900_reset - Reset sis900 MAC
- * @net_dev: the net device to reset
- *
- * reset sis900 MAC and wait until finished
- * reset through command register
- * change backoff algorithm for 900B0 & 635 M/B
- */
-
-static void sis900_reset(struct net_device *net_dev)
-{
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
- int i = 0;
- u32 status = TxRCMP | RxRCMP;
-
- outl(0, ioaddr + ier);
- outl(0, ioaddr + imr);
- outl(0, ioaddr + rfcr);
-
- outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
-
- /* Check that the chip has finished the reset. */
- while (status && (i++ < 1000)) {
- status ^= (inl(isr + ioaddr) & status);
- }
-
- if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
- (sis_priv->chipset_rev == SIS900B_900_REV) )
- outl(PESEL | RND_CNT, ioaddr + cfg);
- else
- outl(PESEL, ioaddr + cfg);
-}
-
-/**
- * sis900_remove - Remove sis900 device
- * @pci_dev: the pci device to be removed
- *
- * remove and release SiS900 net device
- */
-
-static void __devexit sis900_remove(struct pci_dev *pci_dev)
-{
- struct net_device *net_dev = pci_get_drvdata(pci_dev);
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- struct mii_phy *phy = NULL;
-
- while (sis_priv->first_mii) {
- phy = sis_priv->first_mii;
- sis_priv->first_mii = phy->next;
- kfree(phy);
- }
-
- pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
- sis_priv->rx_ring_dma);
- pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
- sis_priv->tx_ring_dma);
- unregister_netdev(net_dev);
- free_netdev(net_dev);
- pci_release_regions(pci_dev);
- pci_set_drvdata(pci_dev, NULL);
-}
-
-#ifdef CONFIG_PM
-
-static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
-{
- struct net_device *net_dev = pci_get_drvdata(pci_dev);
- long ioaddr = net_dev->base_addr;
-
- if(!netif_running(net_dev))
- return 0;
-
- netif_stop_queue(net_dev);
- netif_device_detach(net_dev);
-
- /* Stop the chip's Tx and Rx Status Machine */
- outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
-
- pci_set_power_state(pci_dev, PCI_D3hot);
- pci_save_state(pci_dev);
-
- return 0;
-}
-
-static int sis900_resume(struct pci_dev *pci_dev)
-{
- struct net_device *net_dev = pci_get_drvdata(pci_dev);
- struct sis900_private *sis_priv = netdev_priv(net_dev);
- long ioaddr = net_dev->base_addr;
-
- if(!netif_running(net_dev))
- return 0;
- pci_restore_state(pci_dev);
- pci_set_power_state(pci_dev, PCI_D0);
-
- sis900_init_rxfilter(net_dev);
-
- sis900_init_tx_ring(net_dev);
- sis900_init_rx_ring(net_dev);
-
- set_rx_mode(net_dev);
-
- netif_device_attach(net_dev);
- netif_start_queue(net_dev);
-
- /* Workaround for EDB */
- sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
-
- /* Enable all known interrupts by setting the interrupt mask. */
- outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
- outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
- outl(IE, ioaddr + ier);
-
- sis900_check_mode(net_dev, sis_priv->mii);
-
- return 0;
-}
-#endif /* CONFIG_PM */
-
-static struct pci_driver sis900_pci_driver = {
- .name = SIS900_MODULE_NAME,
- .id_table = sis900_pci_tbl,
- .probe = sis900_probe,
- .remove = __devexit_p(sis900_remove),
-#ifdef CONFIG_PM
- .suspend = sis900_suspend,
- .resume = sis900_resume,
-#endif /* CONFIG_PM */
-};
-
-static int __init sis900_init_module(void)
-{
-/* when a module, this is printed whether or not devices are found in probe */
-#ifdef MODULE
- printk(version);
-#endif
-
- return pci_register_driver(&sis900_pci_driver);
-}
-
-static void __exit sis900_cleanup_module(void)
-{
- pci_unregister_driver(&sis900_pci_driver);
-}
-
-module_init(sis900_init_module);
-module_exit(sis900_cleanup_module);
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 03:30:03 +0000