sis900.c
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- /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
- Copyright 1999 Silicon Integrated System Corporation
- Revision: 1.08.02 Nov. 30 2001
-
- 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
- http://www.sis.com.tw/support/databook.htm
- 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@mandrakesoft.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 eqaulizer 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@mandrakesoft.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/version.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 <asm/processor.h> /* Processor type for cache alignment. */
- #include <asm/bitops.h>
- #include <asm/io.h>
- #include <asm/uaccess.h> /* User space memory access functions */
- #include "sis900.h"
- #define SIS900_MODULE_NAME "sis900"
- #define SIS900_DRV_VERSION "v1.08.02 11/30/2001"
- static char version[] __devinitdata =
- KERN_INFO "sis900.c: " SIS900_DRV_VERSION "n";
- static int max_interrupt_work = 40;
- static int multicast_filter_limit = 128;
- #define sis900_debug debug
- static int sis900_debug;
- /* Time in jiffies before concluding the transmitter is hung. */
- #define TX_TIMEOUT (4*HZ)
- /* SiS 900 is capable of 32 bits BM DMA */
- #define SIS900_DMA_MASK 0xffffffff
- enum {
- SIS_900 = 0,
- SIS_7016
- };
- static char * card_names[] = {
- "SiS 900 PCI Fast Ethernet",
- "SiS 7016 PCI Fast Ethernet"
- };
- static struct pci_device_id sis900_pci_tbl [] __devinitdata = {
- {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 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
- } mii_chip_table[] = {
- { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
- { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
- { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
- { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
- { "ICS LAN PHY", 0x0015, 0xF440, LAN },
- { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
- { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
- {0,},
- };
- 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 net_device_stats stats;
- 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 timer_list timer; /* Link status detection timer. */
- u8 autong_complete; /* 1: auto-negotiate complete */
- 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. */
- };
- 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_PARM(multicast_filter_limit, "i");
- MODULE_PARM(max_interrupt_work, "i");
- MODULE_PARM(debug, "i");
- 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(debug, "SiS 900/7016 debug level (2-4)");
- 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 u16 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 int 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 void sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
- static int sis900_close(struct net_device *net_dev);
- static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
- static struct net_device_stats *sis900_get_stats(struct net_device *net_dev);
- static u16 sis900_compute_hashtable_index(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);
- /**
- * 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.
- */
- 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_INFO "%s: Error EERPOM read %xn",
- net_dev->name, 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);
- 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.
- */
- 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;
- if ((isa_bridge = pci_find_device(0x1039, 0x0008, isa_bridge)) == NULL) {
- printk("%s: Can not find ISA bridgen", net_dev->name);
- return 0;
- }
- pci_read_config_byte(isa_bridge, 0x48, ®);
- 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);
- }
- pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
- 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.
- */
- 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);
- }
- /* enable packet filitering */
- outl(rfcrSave | RFEN, rfcr + ioaddr);
- return 1;
- }
- /**
- * 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;
- dma_addr_t ring_dma;
- void *ring_space;
- long ioaddr;
- int i, ret;
- u8 revision;
- char *card_name = card_names[pci_id->driver_data];
- /* 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, SIS900_DMA_MASK);
- if(i){
- printk(KERN_ERR "sis900.c: architecture does not support"
- "32bit PCI busmaster DMAn");
- return i;
- }
-
- pci_set_master(pci_dev);
-
- net_dev = alloc_etherdev(sizeof(struct sis900_private));
- if (!net_dev)
- return -ENOMEM;
- SET_MODULE_OWNER(net_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 = net_dev->priv;
- 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 = (BufferDesc *)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 = (BufferDesc *)ring_space;
- sis_priv->rx_ring_dma = ring_dma;
-
- /* The SiS900-specific entries in the device structure. */
- net_dev->open = &sis900_open;
- net_dev->hard_start_xmit = &sis900_start_xmit;
- net_dev->stop = &sis900_close;
- net_dev->get_stats = &sis900_get_stats;
- net_dev->set_config = &sis900_set_config;
- net_dev->set_multicast_list = &set_rx_mode;
- net_dev->do_ioctl = &mii_ioctl;
- net_dev->tx_timeout = sis900_tx_timeout;
- net_dev->watchdog_timeo = TX_TIMEOUT;
-
- ret = register_netdev(net_dev);
- if (ret)
- goto err_unmap_rx;
-
- /* Get Mac address according to the chip revision */
- pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &revision);
- ret = 0;
- if (revision == SIS630E_900_REV)
- ret = sis630e_get_mac_addr(pci_dev, net_dev);
- else if ((revision > 0x81) && (revision <= 0x90) )
- ret = sis635_get_mac_addr(pci_dev, net_dev);
- else
- ret = sis900_get_mac_addr(pci_dev, net_dev);
- if (ret == 0) {
- ret = -ENODEV;
- goto err_out_unregister;
- }
-
- /* 630ET : set the mii access mode as software-mode */
- if (revision == SIS630ET_900_REV)
- outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
- /* probe for mii transceiver */
- if (sis900_mii_probe(net_dev) == 0) {
- ret = -ENODEV;
- goto err_out_unregister;
- }
- /* print some information about our NIC */
- printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name,
- card_name, ioaddr, net_dev->irq);
- for (i = 0; i < 5; i++)
- printk("%2.2x:", (u8)net_dev->dev_addr[i]);
- printk("%2.2x.n", net_dev->dev_addr[i]);
- return 0;
- err_out_unregister:
- unregister_netdev(net_dev);
- 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:
- kfree(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 __init sis900_mii_probe (struct net_device * net_dev)
- {
- struct sis900_private * sis_priv = net_dev->priv;
- u16 poll_bit = MII_STAT_LINK, status = 0;
- unsigned int timeout = jiffies + 5 * HZ;
- int phy_addr;
- u8 revision;
- 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)
- /* the mii is not accessable, try next one */
- continue;
-
- if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
- printk(KERN_INFO "Cannot allocate mem for struct mii_phyn");
- 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",
- net_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",
- net_dev->name, phy_addr);
- }
-
- if (sis_priv->mii == NULL) {
- printk(KERN_INFO "%s: No MII transceivers found!n",
- net_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) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(0);
- poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
- if (jiffies >= timeout) {
- printk(KERN_WARNING "%s: reset phy and link down nown", net_dev->name);
- return -ETIME;
- }
- }
- }
- pci_read_config_byte(sis_priv->pci_dev, PCI_CLASS_REVISION, &revision);
- if (revision == 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 = net_dev->priv;
- struct mii_phy *phy = NULL, *phy_home = NULL, *default_phy = 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 deafalut PHY */
- if ( (status & MII_STAT_LINK) && !(default_phy) )
- 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;
- }
- }
- if( (!default_phy) && phy_home )
- default_phy = phy_home;
- 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 defaultn", net_dev->name,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 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(EECLK, 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();
- }
- outb(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();
- outl(EECLK, ee_addr);
- 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 seperately */
- #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();
- }
- return;
- }
- /**
- * 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 u16 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);
- return;
- }
- /**
- * 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 = 0;
- u16 status;
- while (i++ < 2)
- status = mdio_read(net_dev, phy_addr, MII_STATUS);
- mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
-
- return status;
- }
- /**
- * 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 = net_dev->priv;
- long ioaddr = net_dev->base_addr;
- u8 revision;
- int ret;
- /* Soft reset the chip. */
- sis900_reset(net_dev);
- /* Equalizer workaround Rule */
- pci_read_config_byte(sis_priv->pci_dev, PCI_CLASS_REVISION, &revision);
- sis630_set_eq(net_dev, revision);
- ret = request_irq(net_dev->irq, &sis900_interrupt, SA_SHIRQ, 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)
- {
- 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 (sis900_debug > 2) {
- printk(KERN_INFO "%s: Receive Filter Addrss[%d]=%xn",
- net_dev->name, i, inl(ioaddr + rfdr));
- }
- }
- /* enable packet filitering */
- 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 = net_dev->priv;
- 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 (sis900_debug > 2)
- printk(KERN_INFO "%s: TX descriptor register loaded with: %8.8xn",
- 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 = net_dev->priv;
- 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;
- }
- skb->dev = net_dev;
- 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->tail, 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 (sis900_debug > 2)
- printk(KERN_INFO "%s: RX descriptor register loaded with: %8.8xn",
- 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 dectect (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-dectect 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 = net_dev->priv;
- u16 reg14h, eq_value=0, max_value=0, min_value=0;
- u8 host_bridge_rev;
- int i, maxcount=10;
- struct pci_dev *dev=NULL;
- if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
- revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
- return;
- dev = pci_find_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, dev);
- if (dev)
- pci_read_config_byte(dev, PCI_CLASS_REVISION, &host_bridge_rev);
- 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 &&
- (host_bridge_rev == SIS630B0 || 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 &&
- (host_bridge_rev == SIS630B0 || 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);
- }
- return;
- }
- /**
- * 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 = net_dev->priv;
- struct mii_phy *mii_phy = sis_priv->mii;
- static int next_tick = 5*HZ;
- u16 status;
- u8 revision;
- if (!sis_priv->autong_complete){
- int speed, duplex = 0;
- sis900_read_mode(net_dev, &speed, &duplex);
- if (duplex){
- sis900_set_mode(net_dev->base_addr, speed, duplex);
- pci_read_config_byte(sis_priv->pci_dev, PCI_CLASS_REVISION, &revision);
- sis630_set_eq(net_dev, revision);
- 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);
- }
- }
- /* Link ON -> OFF */
- else {
- if (!(status & MII_STAT_LINK)){
- netif_carrier_off(net_dev);
- printk(KERN_INFO "%s: Media Link Offn", 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);
-
- pci_read_config_byte(sis_priv->pci_dev, PCI_CLASS_REVISION, &revision);
- sis630_set_eq(net_dev, revision);
-
- 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 = net_dev->priv;
- 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;
- }
- 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 = net_dev->priv;
- int i = 0;
- u32 status;
-
- while (i++ < 2)
- status = mdio_read(net_dev, phy_addr, MII_STATUS);
- if (!(status & MII_STAT_LINK)){
- printk(KERN_INFO "%s: Media Link Offn", 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 = net_dev->priv;
- struct mii_phy *phy = sis_priv->mii;
- int phy_addr = sis_priv->cur_phy;
- u32 status;
- u16 autoadv, autorec;
- int i = 0;
- while (i++ < 2)
- 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;
- }
- 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 = net_dev->priv;
- long ioaddr = net_dev->base_addr;
- unsigned long flags;
- int i;
- 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(skb);
- sis_priv->tx_skbuff[i] = 0;
- sis_priv->tx_ring[i].cmdsts = 0;
- sis_priv->tx_ring[i].bufptr = 0;
- sis_priv->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;
- /* FIXME: Should we restart the transmission thread here ?? */
- outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
- /* Enable all known interrupts by setting the interrupt mask. */
- outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
- return;
- }
- /**
- * 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 transimt state machine.
- * tell upper layer if the buffer is full
- */
- static int
- sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
- {
- struct sis900_private *sis_priv = net_dev->priv;
- long ioaddr = net_dev->base_addr;
- unsigned int entry;
- unsigned long flags;
- /* Don't transmit data before the complete of auto-negotiation */
- if(!sis_priv->autong_complete){
- netif_stop_queue(net_dev);
- return 1;
- }
- 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);
- if (++sis_priv->cur_tx - sis_priv->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);
- net_dev->trans_start = jiffies;
- if (sis900_debug > 3)
- printk(KERN_INFO "%s: Queued Tx packet at %p size %d "
- "to slot %d.n",
- net_dev->name, skb->data, (int)skb->len, entry);
- return 0;
- }
- /**
- * sis900_interrupt: - sis900 interrupt handler
- * @irq: the irq number
- * @dev_instance: the client data object
- * @regs: snapshot of processor context
- *
- * The interrupt handler does all of the Rx thread work,
- * and cleans up after the Tx thread
- */
- static void sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
- {
- struct net_device *net_dev = dev_instance;
- struct sis900_private *sis_priv = net_dev->priv;
- int boguscnt = max_interrupt_work;
- long ioaddr = net_dev->base_addr;
- u32 status;
- spin_lock (&sis_priv->lock);
- do {
- status = inl(ioaddr + isr);
- if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
- /* nothing intresting happened */
- break;
- /* 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) {
- printk(KERN_INFO "%s: Abnormal interrupt,"
- "status %#8.8x.n", net_dev->name, status);
- break;
- }
- if (--boguscnt < 0) {
- printk(KERN_INFO "%s: Too much work at interrupt, "
- "interrupt status = %#8.8x.n",
- net_dev->name, status);
- break;
- }
- } while (1);
- if (sis900_debug > 3)
- printk(KERN_INFO "%s: exiting interrupt, "
- "interrupt status = 0x%#8.8x.n",
- net_dev->name, inl(ioaddr + isr));
-
- spin_unlock (&sis_priv->lock);
- return;
- }
- /**
- * 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 fucntion 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 = net_dev->priv;
- 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;
- if (sis900_debug > 3)
- printk(KERN_INFO "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
- "status:0x%8.8xn",
- sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
- while (rx_status & OWN) {
- unsigned int rx_size;
- rx_size = (rx_status & DSIZE) - CRC_SIZE;
- if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
- /* corrupted packet received */
- if (sis900_debug > 3)
- printk(KERN_INFO "%s: Corrupted packet "
- "received, buffer status = 0x%8.8x.n",
- net_dev->name, rx_status);
- sis_priv->stats.rx_errors++;
- if (rx_status & OVERRUN)
- sis_priv->stats.rx_over_errors++;
- if (rx_status & (TOOLONG|RUNT))
- sis_priv->stats.rx_length_errors++;
- if (rx_status & (RXISERR | FAERR))
- sis_priv->stats.rx_frame_errors++;
- if (rx_status & CRCERR)
- sis_priv->stats.rx_crc_errors++;
- /* reset buffer descriptor state */
- sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
- } else {
- struct sk_buff * skb;
- /* This situation should never happen, but due to
- some unknow bugs, it is possible that
- we are working on NULL sk_buff :-( */
- if (sis_priv->rx_skbuff[entry] == NULL) {
- printk(KERN_INFO "%s: NULL pointer "
- "encountered in Rx ring, skippingn",
- net_dev->name);
- break;
- }
- pci_dma_sync_single(sis_priv->pci_dev,
- sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
- PCI_DMA_FROMDEVICE);
- pci_unmap_single(sis_priv->pci_dev,
- sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
- PCI_DMA_FROMDEVICE);
- /* give the socket buffer to upper layers */
- skb = sis_priv->rx_skbuff[entry];
- skb_put(skb, rx_size);
- skb->protocol = eth_type_trans(skb, net_dev);
- netif_rx(skb);
- /* some network statistics */
- if ((rx_status & BCAST) == MCAST)
- sis_priv->stats.multicast++;
- net_dev->last_rx = jiffies;
- sis_priv->stats.rx_bytes += rx_size;
- sis_priv->stats.rx_packets++;
- /* refill the Rx buffer, what if there is not enought memory for
- new socket buffer ?? */
- 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 */
- printk(KERN_INFO "%s: Memory squeeze,"
- "deferring packet.n",
- net_dev->name);
- sis_priv->rx_skbuff[entry] = NULL;
- /* reset buffer descriptor state */
- sis_priv->rx_ring[entry].cmdsts = 0;
- sis_priv->rx_ring[entry].bufptr = 0;
- sis_priv->stats.rx_dropped++;
- break;
- }
- skb->dev = net_dev;
- 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->tail,
- RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- sis_priv->dirty_rx++;
- }
- 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 > 0; 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 */
- printk(KERN_INFO "%s: Memory squeeze,"
- "deferring packet.n",
- net_dev->name);
- sis_priv->stats.rx_dropped++;
- break;
- }
- skb->dev = net_dev;
- 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->tail,
- 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 fucntion 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 = net_dev->priv;
- 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 (sis900_debug > 3)
- printk(KERN_INFO "%s: Transmit "
- "error, Tx status %8.8x.n",
- net_dev->name, tx_status);
- sis_priv->stats.tx_errors++;
- if (tx_status & UNDERRUN)
- sis_priv->stats.tx_fifo_errors++;
- if (tx_status & ABORT)
- sis_priv->stats.tx_aborted_errors++;
- if (tx_status & NOCARRIER)
- sis_priv->stats.tx_carrier_errors++;
- if (tx_status & OWCOLL)
- sis_priv->stats.tx_window_errors++;
- } else {
- /* packet successfully transmitted */
- sis_priv->stats.collisions += (tx_status & COLCNT) >> 16;
- sis_priv->stats.tx_bytes += tx_status & DSIZE;
- sis_priv->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 = net_dev->priv;
- 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] = 0;
- }
- }
- 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] = 0;
- }
- }
- /* Green! Put the chip in low-power mode. */
- return 0;
- }
- /**
- * netdev_ethtool_ioctl: - For the basic support of ethtool
- * @net_dev: the net device to command for
- * @useraddr: start address of interface request
- *
- * Process ethtool command such as "ehtool -i" to show information
- */
- static int netdev_ethtool_ioctl (struct net_device *net_dev, void *useraddr)
- {
- struct sis900_private *sis_priv = net_dev->priv;
- u32 ethcmd;
- if (copy_from_user (ðcmd, useraddr, sizeof (ethcmd)))
- return -EFAULT;
-
- switch (ethcmd) {
- case ETHTOOL_GDRVINFO:
- {
- struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO };
- strcpy (info.driver, SIS900_MODULE_NAME);
- strcpy (info.version, SIS900_DRV_VERSION);
- strcpy (info.bus_info, sis_priv->pci_dev->slot_name);
- if (copy_to_user (useraddr, &info, sizeof (info)))
- return -EFAULT;
- return 0;
- }
- default:
- break;
- }
- return -EOPNOTSUPP;
- }
- /**
- * 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 = net_dev->priv;
- struct mii_ioctl_data *data = (struct mii_ioctl_data *)&rq->ifr_data;
- switch(cmd) {
- case SIOCETHTOOL:
- return netdev_ethtool_ioctl(net_dev, (void *) rq->ifr_data);
- case SIOCGMIIPHY: /* Get address of MII PHY in use. */
- case SIOCDEVPRIVATE: /* for binary compat, remove in 2.5 */
- data->phy_id = sis_priv->mii->phy_addr;
- /* Fall Through */
- case SIOCGMIIREG: /* Read MII PHY register. */
- case SIOCDEVPRIVATE+1: /* for binary compat, remove in 2.5 */
- data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
- return 0;
- case SIOCSMIIREG: /* Write MII PHY register. */
- case SIOCDEVPRIVATE+2: /* for binary compat, remove in 2.5 */
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
- return 0;
- default:
- return -EOPNOTSUPP;
- }
- }
- /**
- * sis900_get_stats: - Get sis900 read/write statistics
- * @net_dev: the net device to get statistics for
- *
- * get tx/rx statistics for sis900
- */
- static struct net_device_stats *
- sis900_get_stats(struct net_device *net_dev)
- {
- struct sis900_private *sis_priv = net_dev->priv;
- return &sis_priv->stats;
- }
- /**
- * 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 = dev->priv;
- 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 dont 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?)*/
- printk(KERN_INFO "Not supported");
- return -EOPNOTSUPP;
- break;
-
- default:
- printk(KERN_INFO "Invalid");
- return -EINVAL;
- }
- }
- return 0;
- }
- /**
- * sis900_compute_hashtable_index: - 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 u16 sis900_compute_hashtable_index(u8 *addr, u8 revision)
- {
- /* what is the correct value of the POLYNOMIAL ??
- Donald Becker use 0x04C11DB7U
- Joseph Zbiciak im14u2c@primenet.com gives me the
- correct answer, thank you Joe !! */
- #define POLYNOMIAL 0x04C11DB7L
- u32 crc = 0xffffffff, msb;
- int i, j;
- u32 byte;
- for (i = 0; i < 6; i++) {
- byte = *addr++;
- for (j = 0; j < 8; j++) {
- msb = crc >> 31;
- crc <<= 1;
- if (msb ^ (byte & 1)) {
- crc ^= POLYNOMIAL;
- }
- byte >>= 1;
- }
- }
- /* 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 = net_dev->priv;
- u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
- int i, table_entries;
- u32 rx_mode;
- u8 revision;
- /* 635 Hash Table entires = 256(2^16) */
- pci_read_config_byte(sis_priv->pci_dev, PCI_CLASS_REVISION, &revision);
- if((revision == SIS635A_900_REV) || (revision == 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 ((net_dev->mc_count > 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 packet */
- struct dev_mc_list *mclist;
- rx_mode = RFAAB;
- for (i = 0, mclist = net_dev->mc_list; mclist && i < net_dev->mc_count;
- i++, mclist = mclist->next)
- set_bit(sis900_compute_hashtable_index(mclist->dmi_addr, revision),
- mc_filter);
- }
- /* 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 capatable of looping back packet 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);
- }
- return;
- }
- /**
- * 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 = net_dev->priv;
- long ioaddr = net_dev->base_addr;
- int i = 0;
- u32 status = TxRCMP | RxRCMP;
- u8 revision;
- 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);
- }
- pci_read_config_byte(sis_priv->pci_dev, PCI_CLASS_REVISION, &revision);
- if( (revision == SIS635A_900_REV) || (revision == 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 = net_dev->priv;
- 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);
- kfree(net_dev);
- pci_release_regions(pci_dev);
- pci_set_drvdata(pci_dev, NULL);
- }
- static struct pci_driver sis900_pci_driver = {
- name: SIS900_MODULE_NAME,
- id_table: sis900_pci_tbl,
- probe: sis900_probe,
- remove: __devexit_p(sis900_remove),
- };
- 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_module_init(&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);