| /* 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[] = |
| 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; |
| |
| void __iomem *ioaddr; |
| |
| 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"); |
| |
| #define sw32(reg, val) iowrite32(val, ioaddr + (reg)) |
| #define sw8(reg, val) iowrite8(val, ioaddr + (reg)) |
| #define sr32(reg) ioread32(ioaddr + (reg)) |
| #define sr16(reg) ioread16(ioaddr + (reg)) |
| |
| #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(void __iomem *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(struct sis900_private *, 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. |
| */ |
| |
| static int sis900_get_mac_addr(struct pci_dev *pci_dev, |
| struct net_device *net_dev) |
| { |
| struct sis900_private *sis_priv = netdev_priv(net_dev); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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); |
| |
| 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 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, ®); |
| 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); |
| 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. |
| */ |
| |
| static int sis635_get_mac_addr(struct pci_dev *pci_dev, |
| struct net_device *net_dev) |
| { |
| struct sis900_private *sis_priv = netdev_priv(net_dev); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| u32 rfcrSave; |
| u32 i; |
| |
| rfcrSave = sr32(rfcr); |
| |
| sw32(cr, rfcrSave | RELOAD); |
| sw32(cr, 0); |
| |
| /* disable packet filtering before setting filter */ |
| sw32(rfcr, rfcrSave & ~RFEN); |
| |
| /* load MAC addr to filter data register */ |
| for (i = 0 ; i < 3 ; i++) { |
| sw32(rfcr, (i << RFADDR_shift)); |
| *( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr); |
| } |
| |
| /* enable packet filtering */ |
| sw32(rfcr, rfcrSave | RFEN); |
| |
| 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. |
| */ |
| |
| static int sis96x_get_mac_addr(struct pci_dev *pci_dev, |
| struct net_device *net_dev) |
| { |
| struct sis900_private *sis_priv = netdev_priv(net_dev); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| int wait, rc = 0; |
| |
| sw32(mear, EEREQ); |
| for (wait = 0; wait < 2000; wait++) { |
| if (sr32(mear) & EEGNT) { |
| u16 *mac = (u16 *)net_dev->dev_addr; |
| int i; |
| |
| /* get MAC address from EEPROM */ |
| for (i = 0; i < 3; i++) |
| mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr); |
| |
| rc = 1; |
| break; |
| } |
| udelay(1); |
| } |
| sw32(mear, EEDONE); |
| return rc; |
| } |
| |
| 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_rx_mode = 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 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; |
| void __iomem *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. */ |
| ret = pci_request_regions(pci_dev, "sis900"); |
| if (ret) |
| goto err_out; |
| |
| /* IO region. */ |
| ioaddr = pci_iomap(pci_dev, 0, 0); |
| if (!ioaddr) { |
| ret = -ENOMEM; |
| goto err_out_cleardev; |
| } |
| |
| sis_priv = netdev_priv(net_dev); |
| sis_priv->ioaddr = ioaddr; |
| 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_unmap; |
| } |
| 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)) { |
| eth_hw_addr_random(net_dev); |
| 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) |
| sw32(cr, ACCESSMODE | sr32(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 0x%p, IRQ %d, %pM\n", |
| net_dev->name, card_name, ioaddr, pci_dev->irq, |
| net_dev->dev_addr); |
| |
| /* Detect Wake on Lan support */ |
| ret = (sr32(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_unmap: |
| pci_iounmap(pci_dev, ioaddr); |
| 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 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) { |
| 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() sr32(mear) |
| |
| /** |
| * 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(void __iomem *ioaddr, int location) |
| { |
| u32 read_cmd = location | EEread; |
| int i; |
| u16 retval = 0; |
| |
| sw32(mear, 0); |
| eeprom_delay(); |
| sw32(mear, EECS); |
| eeprom_delay(); |
| |
| /* Shift the read command (9) bits out. */ |
| for (i = 8; i >= 0; i--) { |
| u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS; |
| |
| sw32(mear, dataval); |
| eeprom_delay(); |
| sw32(mear, dataval | EECLK); |
| eeprom_delay(); |
| } |
| sw32(mear, EECS); |
| eeprom_delay(); |
| |
| /* read the 16-bits data in */ |
| for (i = 16; i > 0; i--) { |
| sw32(mear, EECS); |
| eeprom_delay(); |
| sw32(mear, EECS | EECLK); |
| eeprom_delay(); |
| retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0); |
| eeprom_delay(); |
| } |
| |
| /* Terminate the EEPROM access. */ |
| sw32(mear, 0); |
| 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() sr32(mear) |
| |
| static void mdio_idle(struct sis900_private *sp) |
| { |
| void __iomem *ioaddr = sp->ioaddr; |
| |
| sw32(mear, MDIO | MDDIR); |
| mdio_delay(); |
| sw32(mear, MDIO | MDDIR | MDC); |
| } |
| |
| /* Synchronize the MII management interface by shifting 32 one bits out. */ |
| static void mdio_reset(struct sis900_private *sp) |
| { |
| void __iomem *ioaddr = sp->ioaddr; |
| int i; |
| |
| for (i = 31; i >= 0; i--) { |
| sw32(mear, MDDIR | MDIO); |
| mdio_delay(); |
| sw32(mear, MDDIR | MDIO | MDC); |
| 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) |
| { |
| int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift); |
| struct sis900_private *sp = netdev_priv(net_dev); |
| void __iomem *ioaddr = sp->ioaddr; |
| u16 retval = 0; |
| int i; |
| |
| mdio_reset(sp); |
| mdio_idle(sp); |
| |
| for (i = 15; i >= 0; i--) { |
| int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR; |
| |
| sw32(mear, dataval); |
| mdio_delay(); |
| sw32(mear, dataval | MDC); |
| mdio_delay(); |
| } |
| |
| /* Read the 16 data bits. */ |
| for (i = 16; i > 0; i--) { |
| sw32(mear, 0); |
| mdio_delay(); |
| retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0); |
| sw32(mear, MDC); |
| mdio_delay(); |
| } |
| sw32(mear, 0x00); |
| |
| 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) |
| { |
| int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift); |
| struct sis900_private *sp = netdev_priv(net_dev); |
| void __iomem *ioaddr = sp->ioaddr; |
| int i; |
| |
| mdio_reset(sp); |
| mdio_idle(sp); |
| |
| /* Shift the command bits out. */ |
| for (i = 15; i >= 0; i--) { |
| int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR; |
| |
| sw8(mear, dataval); |
| mdio_delay(); |
| sw8(mear, dataval | MDC); |
| mdio_delay(); |
| } |
| mdio_delay(); |
| |
| /* Shift the value bits out. */ |
| for (i = 15; i >= 0; i--) { |
| int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR; |
| |
| sw32(mear, dataval); |
| mdio_delay(); |
| sw32(mear, dataval | MDC); |
| mdio_delay(); |
| } |
| mdio_delay(); |
| |
| /* Clear out extra bits. */ |
| for (i = 2; i > 0; i--) { |
| sw8(mear, 0); |
| mdio_delay(); |
| sw8(mear, MDC); |
| mdio_delay(); |
| } |
| sw32(mear, 0x00); |
| } |
| |
| |
| /** |
| * 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) |
| { |
| struct sis900_private *sp = netdev_priv(dev); |
| const int irq = sp->pci_dev->irq; |
| |
| disable_irq(irq); |
| sis900_interrupt(irq, dev); |
| enable_irq(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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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(sis_priv->pci_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(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED); |
| |
| /* Enable all known interrupts by setting the interrupt mask. */ |
| sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE); |
| sw32(cr, RxENA | sr32(cr)); |
| sw32(ier, IE); |
| |
| 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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| u32 rfcrSave; |
| u32 i; |
| |
| rfcrSave = sr32(rfcr); |
| |
| /* disable packet filtering before setting filter */ |
| sw32(rfcr, rfcrSave & ~RFEN); |
| |
| /* load MAC addr to filter data register */ |
| for (i = 0 ; i < 3 ; i++) { |
| u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i); |
| |
| sw32(rfcr, i << RFADDR_shift); |
| sw32(rfdr, w); |
| |
| if (netif_msg_hw(sis_priv)) { |
| printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n", |
| net_dev->name, i, sr32(rfdr)); |
| } |
| } |
| |
| /* enable packet filtering */ |
| sw32(rfcr, rfcrSave | RFEN); |
| } |
| |
| /** |
| * 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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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 */ |
| sw32(txdp, sis_priv->tx_ring_dma); |
| if (netif_msg_hw(sis_priv)) |
| printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n", |
| net_dev->name, sr32(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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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 = netdev_alloc_skb(net_dev, 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); |
| if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, |
| sis_priv->rx_ring[i].bufptr))) { |
| dev_kfree_skb(skb); |
| sis_priv->rx_skbuff[i] = NULL; |
| break; |
| } |
| } |
| sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC); |
| |
| /* load Receive Descriptor Register */ |
| sw32(rxdp, sis_priv->rx_ring_dma); |
| if (netif_msg_hw(sis_priv)) |
| printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n", |
| net_dev->name, sr32(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; |
| int speed = 0, duplex = 0; |
| u16 status; |
| |
| 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) { |
| WARN_ON(!(status & MII_STAT_AUTO_DONE)); |
| |
| sis900_read_mode(net_dev, &speed, &duplex); |
| if (duplex) { |
| sis900_set_mode(sis_priv, speed, duplex); |
| sis630_set_eq(net_dev, sis_priv->chipset_rev); |
| 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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| int speed, duplex; |
| |
| if (mii_phy->phy_types == LAN) { |
| sw32(cfg, ~EXD & sr32(cfg)); |
| sis900_set_capability(net_dev , mii_phy); |
| sis900_auto_negotiate(net_dev, sis_priv->cur_phy); |
| } else { |
| sw32(cfg, EXD | sr32(cfg)); |
| speed = HW_SPEED_HOME; |
| duplex = FDX_CAPABLE_HALF_SELECTED; |
| sis900_set_mode(sis_priv, speed, duplex); |
| sis_priv->autong_complete = 1; |
| } |
| } |
| |
| /** |
| * sis900_set_mode - Set the media mode of mac register. |
| * @sp: the device private data |
| * @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(struct sis900_private *sp, int speed, int duplex) |
| { |
| void __iomem *ioaddr = sp->ioaddr; |
| u32 tx_flags = 0, rx_flags = 0; |
| |
| if (sr32( 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 |
| |
| sw32(txcfg, tx_flags); |
| sw32(rxcfg, rx_flags); |
| } |
| |
| /** |
| * 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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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, sr32(cr), sr32(isr)); |
| } |
| |
| /* Disable interrupts by clearing the interrupt mask. */ |
| sw32(imr, 0x0000); |
| |
| /* 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 */ |
| sw32(txdp, sis_priv->tx_ring_dma); |
| |
| /* Enable all known interrupts by setting the interrupt mask. */ |
| sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE); |
| } |
| |
| /** |
| * 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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| unsigned int entry; |
| unsigned long flags; |
| unsigned int index_cur_tx, index_dirty_tx; |
| unsigned int count_dirty_tx; |
| |
| 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); |
| if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, |
| sis_priv->tx_ring[entry].bufptr))) { |
| dev_kfree_skb(skb); |
| sis_priv->tx_skbuff[entry] = NULL; |
| net_dev->stats.tx_dropped++; |
| spin_unlock_irqrestore(&sis_priv->lock, flags); |
| return NETDEV_TX_OK; |
| } |
| sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len); |
| sw32(cr, TxENA | sr32(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; |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| u32 status; |
| unsigned int handled = 0; |
| |
| spin_lock (&sis_priv->lock); |
| |
| do { |
| status = sr32(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, sr32(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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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 = netdev_alloc_skb(net_dev, 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); |
| if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, |
| sis_priv->rx_ring[entry].bufptr))) { |
| dev_kfree_skb_irq(skb); |
| sis_priv->rx_skbuff[entry] = NULL; |
| break; |
| } |
| } |
| 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) { |
| skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE); |
| if (skb == 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 */ |
| 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); |
| if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, |
| sis_priv->rx_ring[entry].bufptr))) { |
| dev_kfree_skb_irq(skb); |
| sis_priv->rx_skbuff[entry] = NULL; |
| break; |
| } |
| } |
| } |
| /* re-enable the potentially idle receive state matchine */ |
| sw32(cr , RxENA | sr32(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) |
| { |
| struct sis900_private *sis_priv = netdev_priv(net_dev); |
| struct pci_dev *pdev = sis_priv->pci_dev; |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| struct sk_buff *skb; |
| int i; |
| |
| netif_stop_queue(net_dev); |
| |
| /* Disable interrupts by clearing the interrupt mask. */ |
| sw32(imr, 0x0000); |
| sw32(ier, 0x0000); |
| |
| /* Stop the chip's Tx and Rx Status Machine */ |
| sw32(cr, RxDIS | TxDIS | sr32(cr)); |
| |
| del_timer(&sis_priv->timer); |
| |
| free_irq(pdev->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(pdev, 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(pdev, 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); |
| |
| strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver)); |
| strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version)); |
| strlcpy(info->bus_info, pci_name(sis_priv->pci_dev), |
| sizeof(info->bus_info)); |
| } |
| |
| 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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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); |
| sw32(pmctrl, pmctrl_bits); |
| 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; |
| |
| sw32(pmctrl, pmctrl_bits); |
| |
| 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) |
| { |
| struct sis900_private *sp = netdev_priv(net_dev); |
| void __iomem *ioaddr = sp->ioaddr; |
| u32 pmctrl_bits; |
| |
| pmctrl_bits = sr32(pmctrl); |
| 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) |
| { |
| struct sis900_private *sis_priv = netdev_priv(net_dev); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| 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. */ |
| sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift); |
| sw32(rfdr, mc_filter[i]); |
| } |
| |
| sw32(rfcr, RFEN | rx_mode); |
| |
| /* 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 = sr32(cr); |
| sw32(cr, cr_saved | TxDIS | RxDIS); |
| /* enable loopback */ |
| sw32(txcfg, sr32(txcfg) | TxMLB); |
| sw32(rxcfg, sr32(rxcfg) | RxATX); |
| /* restore cr */ |
| sw32(cr, cr_saved); |
| } |
| } |
| |
| /** |
| * 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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| u32 status = TxRCMP | RxRCMP; |
| int i; |
| |
| sw32(ier, 0); |
| sw32(imr, 0); |
| sw32(rfcr, 0); |
| |
| sw32(cr, RxRESET | TxRESET | RESET | sr32(cr)); |
| |
| /* Check that the chip has finished the reset. */ |
| for (i = 0; status && (i < 1000); i++) |
| status ^= sr32(isr) & status; |
| |
| if (sis_priv->chipset_rev >= SIS635A_900_REV || |
| sis_priv->chipset_rev == SIS900B_900_REV) |
| sw32(cfg, PESEL | RND_CNT); |
| else |
| sw32(cfg, PESEL); |
| } |
| |
| /** |
| * sis900_remove - Remove sis900 device |
| * @pci_dev: the pci device to be removed |
| * |
| * remove and release SiS900 net device |
| */ |
| |
| static void 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); |
| |
| unregister_netdev(net_dev); |
| |
| while (sis_priv->first_mii) { |
| struct mii_phy *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); |
| pci_iounmap(pci_dev, sis_priv->ioaddr); |
| 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); |
| struct sis900_private *sis_priv = netdev_priv(net_dev); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| |
| 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 */ |
| sw32(cr, RxDIS | TxDIS | sr32(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); |
| void __iomem *ioaddr = sis_priv->ioaddr; |
| |
| 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(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED); |
| |
| /* Enable all known interrupts by setting the interrupt mask. */ |
| sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE); |
| sw32(cr, RxENA | sr32(cr)); |
| sw32(ier, IE); |
| |
| 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 = 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); |
| |