/* 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 100 BASE - TX / 10 BASE - 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 630 ET & 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 & 635 M / 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 630 E equalizer workaround rule Rev 1 . 07 . 01 Aug . 08 2000 Ollie Lho minor update for SiS 630 E and SiS 630 E 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 <linux/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[] ="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 \/* Time in jiffies before concluding the transmitter is hung. */ #define TX_TIMEOUT (4 *HZ)enum {0 ,static const char * card_names[] = {"SiS 900 PCI Fast Ethernet" ,"SiS 7016 PCI Fast Ethernet" static const struct pci_device_id sis900_pci_tbl[] = {0 , 0 , SIS_900},0 , 0 , SIS_7016},0 ,}static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);static const struct mii_chip_info {const char * name;#define HOME 0 x0001#define LAN 0 x0002#define MIX 0 x0003#define UNKNOWN 0 x0"SiS 900 Internal MII PHY" , 0 x001d, 0 x8000, LAN },"SiS 7014 Physical Layer Solution" , 0 x0016, 0 xf830, LAN },"SiS 900 on Foxconn 661 7MI" , 0 x0143, 0 xBC70, LAN },"Altimata AC101LF PHY" , 0 x0022, 0 x5520, LAN },"ADM 7001 LAN PHY" , 0 x002e, 0 xcc60, LAN },"AMD 79C901 10BASE-T PHY" , 0 x0000, 0 x6B70, LAN },"AMD 79C901 HomePNA PHY" , 0 x0000, 0 x6B90, HOME},"ICS LAN PHY" , 0 x0015, 0 xF440, LAN },"ICS LAN PHY" , 0 x0143, 0 xBC70, LAN },"NS 83851 PHY" , 0 x2000, 0 x5C20, MIX },"NS 83847 PHY" , 0 x2000, 0 x5C30, MIX },"Realtek RTL8201 PHY" , 0 x0000, 0 x8200, LAN },"VIA 6103 PHY" , 0 x0101, 0 x8f20, LAN },struct mii_phy {struct mii_phy * next;int phy_addr;typedef struct _BufferDesc {struct sis900_private {struct pci_dev * pci_dev;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. */ /* 1: auto-negotiate complete */ unsigned int cur_rx, dirty_rx; /* producer/consumer 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];unsigned int tx_full; /* The Tx queue is full. */ /* EEPROM data */ int eeprom_size;"Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>" );"SiS 900 PCI Fast Ethernet driver" );"GPL" );int , 0444 );int , 0444 );int , 0444 );"SiS 900/7016 maximum number of filtered multicast addresses" );"SiS 900/7016 maximum events handled per interrupt" );"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_CONTROLLERstatic 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(struct timer_list *t);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, unsigned int txqueue);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;2 ];int i;/* check to see if we have sane EEPROM */ if (signature == 0 xffff || signature == 0 x0000) {"%s: Error EEPROM read %x\n" ,return 0 ;/* get MAC address from EEPROM */ for (i = 0 ; i < 3 ; i++)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;int i;0 x0008, isa_bridge);if (!isa_bridge)0 x0018, isa_bridge);if (!isa_bridge) {"%s: Can not find ISA bridge\n" ,return 0 ;0 x48, ®);0 x48, reg | 0 x40);for (i = 0 ; i < 6 ; i++) {0 x09 + i, 0 x70);0 x71);0 x48, reg & ~0 x40);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;2 ];0 );/* disable packet filtering before setting filter */ /* load MAC addr to filter data register */ for (i = 0 ; i < 3 ; i++) {/* enable packet filtering */ 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 accessing EEPROM , send EEREQ signal to hardware first * and wait for EEGNT . If EEGNT is ON , EEPROM is permitted to be accessed * by LAN , otherwise it 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;2 ];int wait, rc = 0 ;for (wait = 0 ; wait < 2000 ; wait++) {if (sr32(mear) & EEGNT) {int i;/* get MAC address from EEPROM */ for (i = 0 ; i < 3 ; i++)1 ;break ;1 );return rc;static const struct net_device_ops sis900_netdev_ops = {#ifdef CONFIG_NET_POLL_CONTROLLER#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;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 MODULEstatic int printed_version;if (!printed_version++)#endif /* setup various bits in PCI command register */ if (ret) return ret;32 ));if (i){"sis900.c: architecture does not support " "32bit PCI busmaster DMA\n" );return i;sizeof (struct sis900_private));if (!net_dev)return -ENOMEM;/* We do a request_region() to register /proc/ioports info. */ "sis900" );if (ret)goto err_out;/* IO region. */ 0 , 0 );if (!ioaddr) {goto err_out;24 ;if (!ring_space) {goto err_out_unmap;if (!ring_space) {goto err_unmap_tx;/* The SiS900-specific entries in the device structure. */ if (sis900_debug > 0 )else 0 x1f;0 x1f;/* Get Mac address according to the chip revision */ if (netif_msg_probe(sis_priv))"%s: detected revision %2.2x, " "trying to get MAC address...\n" ,0 ;if (sis_priv->chipset_rev == SIS630E_900_REV)else if ((sis_priv->chipset_rev > 0 x81) && (sis_priv->chipset_rev <= 0 x90) )else if (sis_priv->chipset_rev == SIS96x_900_REV)else if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {"%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)/* probe for mii transceiver */ if (sis900_mii_probe(net_dev) == 0 ) {"%s: Error probing MII device.\n" ,goto err_unmap_rx;/* save our host bridge revision */ if (dev) {if (ret)goto err_unmap_rx;/* print some information about our NIC */ "%s: %s at 0x%p, IRQ %d, %pM\n" ,/* Detect Wake on Lan support */ 27 ;if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0 )"%s: Wake on LAN only available from suspend to RAM." , net_dev->name);return 0 ;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);0 ;unsigned long timeout = jiffies + 5 * HZ;int phy_addr;/* search for total of 32 possible mii phy addresses */ for (phy_addr = 0 ; phy_addr < 32 ; phy_addr++) {struct mii_phy * mii_phy = NULL;int i;for (i = 0 ; i < 2 ; i++)if (mii_status == 0 xffff || mii_status == 0 x0000) {if (netif_msg_probe(sis_priv))"%s: MII at address %d" " not accessible\n" ,continue ;if ((mii_phy = kmalloc(sizeof (struct mii_phy), GFP_KERNEL)) == NULL) {while (mii_phy) {struct mii_phy *phy;return 0 ;for (i = 0 ; mii_chip_table[i].phy_id1; i++)if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&0 xFFF0) == mii_chip_table[i].phy_id1)){if (mii_chip_table[i].phy_types == MIX)"%s: %s transceiver found " "at address %d.\n" ,break ;if ( !mii_chip_table[i].phy_id1 ) {"%s: Unknown PHY transceiver found at address %d.\n" ,if (sis_priv->mii == NULL) {"%s: No MII transceivers found!\n" , dev_name);return 0 ;/* select default PHY for mac */ /* Reset phy if default phy is internal sis900 */ if ((sis_priv->mii->phy_id0 == 0 x001D) &&0 xFFF0) == 0 x8000))/* workaround for ICS1893 PHY */ if ((sis_priv->mii->phy_id0 == 0 x0015) &&0 xFFF0) == 0 xF440))0 x0018, 0 xD200);if (status & MII_STAT_LINK){while (poll_bit) {if (time_after_eq(jiffies, timeout)) {"%s: reset phy and link down now\n" ,return -ETIME;if (sis_priv->chipset_rev == SIS630E_900_REV) {/* SiS 630E has some bugs on default value of PHY registers */ 0 x05e1);0 x22);0 xff00);0 xffc0);//mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000); if (sis_priv->mii->status & MII_STAT_LINK)else 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,for (phy=sis_priv->first_mii; phy; phy=phy->next) {/* Link ON & Not select default PHY & not ghost PHY */ if ((status & MII_STAT_LINK) && !default_phy &&else {if (phy->phy_types == HOME)else if (phy->phy_types == LAN)if (!default_phy && phy_home)else if (!default_phy && phy_lan)else if (!default_phy)if (sis_priv->mii != default_phy) {"%s: Using transceiver found at address %d as default\n" ,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)0 ) |0 ) |0 )|0 );/* 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)int i;0 ;0 );/* Shift the read command (9) bits out. */ for (i = 8 ; i >= 0 ; i--) {1 << i)) ? EEDI | EECS : EECS;/* read the 16-bits data in */ for (i = 16 ; i > 0 ; i--) {1 ) | ((sr32(mear) & EEDO) ? 1 : 0 );/* Terminate the EEPROM access. */ 0 );return retval;/* Read and write the MII management registers using software-generated serial MDIO protocol . Note that the command bits and data bits are #define mdio_delay() sr32(mear)static void mdio_idle(struct sis900_private *sp)void __iomem *ioaddr = sp->ioaddr;/* 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--) {/** * mdio_read - read MII PHY register * @ net_dev : the net device to read * @ phy_id : the phy address to read * @ location : the phy register 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;0 ;int i;for (i = 15 ; i >= 0 ; i--) {int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;/* Read the 16 data bits. */ for (i = 16 ; i > 0 ; i--) {0 );1 ) | ((sr32(mear) & MDIO) ? 1 : 0 );0 x00);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 register 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;/* Shift the command bits out. */ for (i = 15 ; i >= 0 ; i--) {int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;/* Shift the value bits out. */ for (i = 15 ; i >= 0 ; i--) {int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;/* Clear out extra bits. */ for (i = 2 ; i > 0 ; i--) {0 );0 x00);/** * 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;for (i = 0 ; i < 2 ; i++)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;#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 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. */ /* Equalizer workaround Rule */ if (ret)return ret;/* Workaround for EDB */ /* Enable all known interrupts by setting the interrupt mask. */ /* Set the timer to switch to check for link beat and perhaps switch 0 );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 struct net_device * net_dev)struct sis900_private *sis_priv = netdev_priv(net_dev);void __iomem *ioaddr = sis_priv->ioaddr;/* disable packet filtering before setting filter */ /* load MAC addr to filter data register */ for (i = 0 ; i < 3 ; i++) {const u16 *)(net_dev->dev_addr)+i);if (netif_msg_hw(sis_priv)) {"%s: Receive Filter Address[%d]=%x\n" ,/* enable packet filtering */ /** * sis900_init_tx_ring - Initialize the Tx descriptor ring * @ net_dev : the net device to initialize for * * Initialize the Tx descriptor ring , static void struct net_device *net_dev)struct sis900_private *sis_priv = netdev_priv(net_dev);void __iomem *ioaddr = sis_priv->ioaddr;int i;0 ;0 ;for (i = 0 ; i < NUM_TX_DESC; i++) {1 )%NUM_TX_DESC)*sizeof (BufferDesc);0 ;0 ;/* load Transmit Descriptor Register */ if (netif_msg_hw(sis_priv))"%s: TX descriptor register loaded with: %8.8x\n" ,/** * 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 receive buffers ( socket buffer ) static void struct net_device *net_dev)struct sis900_private *sis_priv = netdev_priv(net_dev);void __iomem *ioaddr = sis_priv->ioaddr;int i;0 ;0 ;/* init RX descriptor */ for (i = 0 ; i < NUM_RX_DESC; i++) {1 )%NUM_RX_DESC)*sizeof (BufferDesc);0 ;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 break ;if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,break ;unsigned int ) (i - NUM_RX_DESC);/* load Receive Descriptor Register */ if (netif_msg_hw(sis_priv))"%s: RX descriptor register loaded with: %8.8x\n" ,/** * sis630_set_eq - set phy equalizer value for 630 LAN * @ net_dev : the net device to set equalizer value * @ revision : 630 LAN revision number * * 630 E equalizer workaround rule ( Cyrus Huang 08 / 15 ) * PHY register 14 h ( 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);0 , max_value=0 , min_value=0 ;int i, maxcount=10 ;if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||return ;if (netif_carrier_ok(net_dev)) {0 x2200 | reg14h) & 0 xBFFF);for (i=0 ; i < maxcount; i++) {0 x00F8 & mdio_read(net_dev,3 ;if (i == 0 )/* 630E rule to determine the equalizer value */ if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||if (max_value < 5 )else if (max_value >= 5 && max_value < 15 )2 : max_value+1 ;else if (max_value >= 15 )6 : max_value+5 ;/* 630B0&B1 rule to determine the equalizer value */ if (revision == SIS630A_900_REV &&if (max_value == 0 )3 ;else 1 )/2 ;/* write equalizer value and setting */ 0 xFF07) | ((eq_value << 3 ) & 0 x00F8);0 x6000) & 0 xFDFF;else {if (revision == SIS630A_900_REV &&0 x2200) & 0 xBFFF);else 0 x2000) & 0 xBFFF);/** * sis900_timer - sis900 timer routine * @ t : timer list containing a 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(struct timer_list *t)struct sis900_private *sis_priv = timer_container_of(sis_priv, t,struct net_device *net_dev = sis_priv->mii_info.dev;struct mii_phy *mii_phy = sis_priv->mii;static const int next_tick = 5 *HZ;int speed = 0 , duplex = 0 ;/* Link OFF -> ON */ if (!netif_carrier_ok(net_dev)) {/* Search for new PHY */ if (status & MII_STAT_LINK) {if (duplex) {else {/* Link ON -> OFF */ if (!(status & MII_STAT_LINK)){if (netif_msg_link(sis_priv))"%s: Media Link Off\n" , net_dev->name);/* Change mode issue */ if ((mii_phy->phy_id0 == 0 x001D) &&0 xFFF0) == 0 x8000))goto LookForLink;/** * 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) {else {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;0 , rx_flags = 0 ;if (sr32( cfg) & EDB_MASTER_EN) {else {if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {else {if (duplex == FDX_CAPABLE_FULL_SELECTED) {#if IS_ENABLED(CONFIG_VLAN_8021Q)/* Can accept Jumbo packet */ #endif /** * 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 ;for (i = 0 ; i < 2 ; i++)if (!(status & MII_STAT_LINK)){if (netif_msg_link(sis_priv))"%s: Media Link Off\n" , net_dev->name);1 ;return ;/* (Re)start AutoNegotiate */ 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;int i;for (i = 0 ; i < 2 ; i++)if (!(status & MII_STAT_LINK))return ;/* AutoNegotiate completed */ if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))1 ;/* Workaround for Realtek RTL8201 PHY issue */ if ((phy->phy_id0 == 0 x0000) && ((phy->phy_id1 & 0 xFFF0) == 0 x8200)) {if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)if (mdio_read(net_dev, phy_addr, 0 x0019) & 0 x01)if (netif_msg_link(sis_priv))"%s: Media Link On %s %s-duplex\n" ,"100mbps" : "10mbps" ,"full" : "half" );/** * sis900_tx_timeout - sis900 transmit timeout routine * @ net_dev : the net device to transmit * @ txqueue : index of hanging queue * * print transmit timeout status * disable interrupts and do some tasks static void sis900_tx_timeout(struct net_device *net_dev, unsigned int txqueue)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)) {"%s: Transmit timeout, status %8.8x %8.8x\n" ,/* Disable interrupts by clearing the interrupt mask. */ 0 x0000);/* use spinlock to prevent interrupt handler accessing buffer ring */ /* discard unsent packets */ 0 ;for (i = 0 ; i < NUM_TX_DESC; i++) {struct sk_buff *skb = sis_priv->tx_skbuff[i];if (skb) {0 ;0 ;0 ;/* prevent tx timeout */ /* load Transmit Descriptor Register */ /* Enable all known interrupts by setting the interrupt mask. */ /** * 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_tstruct 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;/* Calculate the next Tx descriptor entry. */ /* set the transmit buffer descriptor and enable Transmit State Machine */ if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,return NETDEV_TX_OK;for (count_dirty_tx = 0 ; index_cur_tx != index_dirty_tx; index_dirty_tx++)if (index_cur_tx == index_dirty_tx) {/* dirty_tx is met in the cycle of cur_tx, buffer full */ 1 ;else if (count_dirty_tx < NUM_TX_DESC) {/* Typical path, tell upper layer that more transmission is possible */ else {/* buffer full, tell upper layer no more transmission */ 1 ;if (netif_msg_tx_queued(sis_priv))"%s: Queued Tx packet at %p size %d " "to slot %d.\n" ,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;unsigned int handled = 0 ;do {if ((status & (HIBERR|TxURN|TxERR|TxDESC|RxORN|RxERR|RxOK)) == 0 )/* nothing interesting happened */ break ;1 ;/* why dow't we break after Tx/Rx case ?? keyword: full-duplex */ if (status & (RxORN | RxERR | RxOK))/* Rx interrupt */ if (status & (TxURN | TxERR | TxDESC))/* Tx interrupt */ /* something strange happened !!! */ if (status & HIBERR) {if (netif_msg_intr(sis_priv))"%s: Abnormal interrupt, " "status %#8.8x.\n" , net_dev->name, status);break ;if (--boguscnt < 0 ) {if (netif_msg_intr(sis_priv))"%s: Too much work at interrupt, " "interrupt status = %#8.8x.\n" ,break ;while (1 );if (netif_msg_intr(sis_priv))"%s: exiting interrupt, " "interrupt status = %#8.8x\n" ,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;int rx_work_limit;if (netif_msg_rx_status(sis_priv))"sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d " "status:0x%8.8x\n" ,while (rx_status & OWN) {unsigned int rx_size;unsigned int data_size;if (--rx_work_limit < 0 )break ;#if IS_ENABLED(CONFIG_VLAN_8021Q)/* ``TOOLONG'' flag means jumbo packet received. */ if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)unsigned int )TOOLONG));#endif if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {/* corrupted packet received */ if (netif_msg_rx_err(sis_priv))"%s: Corrupted packet " "received, buffer status = 0x%8.8x/%d.\n" ,if (rx_status & OVERRUN)if (rx_status & (TOOLONG|RUNT))if (rx_status & (RXISERR | FAERR))if (rx_status & CRCERR)/* reset buffer descriptor state */ else {struct sk_buff * skb;struct sk_buff * rx_skb;/* refill the Rx buffer, what if there is not enough 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 goto refill_rx_ring;/* This situation should never happen, but due to some unknown bugs , it is possible that if (sis_priv->rx_skbuff[entry] == NULL) {if (netif_msg_rx_err(sis_priv))"%s: NULL pointer " "encountered in Rx ring\n" "cur_rx:%4.4d, dirty_rx:%4.4d\n" ,break ;/* give the socket buffer to upper layers */ /* some network statistics */ if ((rx_status & BCAST) == MCAST)if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,break ;// while /* refill the Rx buffer, what if the rate of refilling is slower for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {struct sk_buff *skb;if (sis_priv->rx_skbuff[entry] == NULL) {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 break ;if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,break ;/* re-enable the potentially idle receive state matchine */ 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;if (tx_status & OWN) {/* The packet is not transmitted yet (owned by hardware) ! * Note : this is an almost impossible condition break ;if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {/* packet unsuccessfully transmitted */ if (netif_msg_tx_err(sis_priv))"%s: Transmit " "error, Tx status %8.8x.\n" ,if (tx_status & UNDERRUN)if (tx_status & ABORT)if (tx_status & NOCARRIER)if (tx_status & OWCOLL)else {/* packet successfully transmitted */ 16 ;/* Free the original skb. */ 0 ;0 ;if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&4 ) {/* The ring is no longer full, clear tx_full and schedule 0 ;/** * 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;/* Disable interrupts by clearing the interrupt mask. */ 0 x0000);0 x0000);/* Stop the chip's Tx and Rx Status Machine */ /* Free Tx and RX skbuff */ for (i = 0 ; i < NUM_RX_DESC; i++) {if (skb) {for (i = 0 ; i < NUM_TX_DESC; i++) {if (skb) {/* 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);sizeof (info->driver));sizeof (info->version));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);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_link_ksettings(struct net_device *net_dev,struct ethtool_link_ksettings *cmd)struct sis900_private *sis_priv = netdev_priv(net_dev);return 0 ;static int sis900_set_link_ksettings(struct net_device *net_dev,const struct ethtool_link_ksettings *cmd)struct sis900_private *sis_priv = netdev_priv(net_dev);int rt;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;0 , pmctrl_bits = 0 ;if (wol->wolopts == 0 ) {if (netif_msg_wol(sis_priv))"%s: Wake on LAN disabled\n" , net_dev->name);return 0 ;if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCASTreturn -EINVAL;if (wol->wolopts & WAKE_MAGIC)if (wol->wolopts & WAKE_PHY)if (netif_msg_wol(sis_priv))"%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;if (pmctrl_bits & MAGICPKT)if (pmctrl_bits & LINKON)static int sis900_get_eeprom_len(struct net_device *dev)struct sis900_private *sis_priv = netdev_priv(dev);return sis_priv->eeprom_size;static int sis900_read_eeprom(struct net_device *net_dev, u8 *buf)struct sis900_private *sis_priv = netdev_priv(net_dev);void __iomem *ioaddr = sis_priv->ioaddr;int wait, ret = -EAGAIN;int i;if (sis_priv->chipset_rev == SIS96x_900_REV) {for (wait = 0 ; wait < 2000 ; wait++) {if (sr32(mear) & EEGNT) {/* read 16 bits, and index by 16 bits */ for (i = 0 ; i < sis_priv->eeprom_size / 2 ; i++)0 ;break ;1 );else {if (signature != 0 xffff && signature != 0 x0000) {/* read 16 bits, and index by 16 bits */ for (i = 0 ; i < sis_priv->eeprom_size / 2 ; i++)0 ;return ret;#define SIS900_EEPROM_MAGIC 0 xBABEstatic int sis900_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)struct sis900_private *sis_priv = netdev_priv(dev);int res;if (!eebuf)return -ENOMEM;if (!res)return res;static const struct ethtool_ops sis900_ethtool_ops = {/** * 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. */ case SIOCGMIIREG: /* Read MII PHY register. */ 0 x1f, data->reg_num & 0 x1f);return 0 ;case SIOCSMIIREG: /* Write MII PHY register. */ 0 x1f, data->reg_num & 0 x1f, 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 10 baseT , 100 baseT 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;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 switch (map->port){case IF_PORT_UNKNOWN: /* use auto here */ /* 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 /* read current state */ /* 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 break ;case IF_PORT_10BASET: /* 10BaseT */ /* 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 /* set Speed to 10Mbps */ /* read current state */ /* disable auto negotiation and force 10MBit mode*/ break ;case IF_PORT_100BASET: /* 100BaseT */ case IF_PORT_100BASETX: /* 100BaseTx */ /* 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 /* set Speed to 100Mbps */ /* disable auto negotiation and enable 100MBit Mode */ 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;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)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 635 M / B & 900 B0 . 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;16 ] = {0 }; /* 256/128 bits multicast hash table */ int i, table_entries;/* 635 Hash Table entries = 256(2^16) */ if ((sis_priv->chipset_rev >= SIS635A_900_REV) ||16 ;else 8 ;if (net_dev->flags & IFF_PROMISC) {/* Accept any kinds of packets */ for (i = 0 ; i < table_entries; i++)0 xffff;else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||/* too many multicast addresses or accept all multicast packet */ for (i = 0 ; i < table_entries; i++)0 xffff;else {/* Accept Broadcast packet, destination address matchs our * MAC address , use Receive Filter to reject unwanted MCAST struct netdev_hw_addr *ha;unsigned int bit_nr;4 ] |= (1 << (bit_nr & 0 xf));/* 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. */ 0 x00000004 + i) << RFADDR_shift);/* sis900 is capable of looping back packets at MAC level for if (net_dev->flags & IFF_LOOPBACK) {/* We must disable Tx/Rx before setting loopback mode */ /* enable loopback */ /* restore cr */ /** * sis900_reset - Reset sis900 MAC * @ net_dev : the net device to reset * * reset sis900 MAC and wait until finished * reset through command register * change backoff algorithm for 900 B0 & 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;int i;0 );0 );0 );/* Check that the chip has finished the reset. */ for (i = 0 ; status && (i < 1000 ); i++)if (sis_priv->chipset_rev >= SIS635A_900_REV ||else /** * 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);while (sis_priv->first_mii) {struct mii_phy *phy = sis_priv->first_mii;static int __maybe_unused sis900_suspend(struct device *dev)struct net_device *net_dev = dev_get_drvdata(dev);struct sis900_private *sis_priv = netdev_priv(net_dev);void __iomem *ioaddr = sis_priv->ioaddr;if (!netif_running(net_dev))return 0 ;/* Stop the chip's Tx and Rx Status Machine */ return 0 ;static int __maybe_unused sis900_resume(struct device *dev)struct net_device *net_dev = dev_get_drvdata(dev);struct sis900_private *sis_priv = netdev_priv(net_dev);void __iomem *ioaddr = sis_priv->ioaddr;if (!netif_running(net_dev))return 0 ;/* Workaround for EDB */ /* Enable all known interrupts by setting the interrupt mask. */ return 0 ;static SIMPLE_DEV_PM_OPS(sis900_pm_ops, sis900_suspend, sis900_resume);static struct pci_driver sis900_pci_driver = {static int __init sis900_init_module(void )/* when a module, this is printed whether or not devices are found in probe */ #ifdef MODULE#endif return pci_register_driver(&sis900_pci_driver);static void __exit sis900_cleanup_module(void )
Messung V0.5 in Prozent C=93 H=87 G=89
¤ Dauer der Verarbeitung: 0.66 Sekunden
(vorverarbeitet am 2026-09-28)
¤ *© Formatika GbR, Deutschland
