--- /dev/null
+/* -*- Mode:C; c-basic-offset:4; -*- */
+
+/*
+ sis900.c: An SiS 900/7016 PCI Fast Ethernet driver for Etherboot
+ Copyright (C) 2001 Entity Cyber, Inc.
+
+ Revision: 1.0 March 1, 2001
+
+ Author: Marty Connor (mdc@etherboot.org)
+
+ Adapted from a Linux driver which was written by Donald Becker
+ and modified by Ollie Lho and Chin-Shan Li of SiS Corporation.
+ Rewritten for Etherboot by Marty Connor.
+
+ This software may be used and distributed according to the terms
+ of the GNU Public License (GPL), incorporated herein by reference.
+
+ References:
+ SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
+ preliminary Rev. 1.0 Jan. 14, 1998
+ SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
+ preliminary Rev. 1.0 Nov. 10, 1998
+ SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
+ preliminary Rev. 1.0 Jan. 18, 1998
+ http://www.sis.com.tw/support/databook.htm */
+
+FILE_LICENCE ( GPL_ANY );
+
+/* Revision History */
+
+/*
+ 07 Dec 2003 timlegge - Enabled Multicast Support
+ 06 Dec 2003 timlegge - Fixed relocation issue in 5.2
+ 04 Jan 2002 Chien-Yu Chen, Doug Ambrisko, Marty Connor Patch to Etherboot 5.0.5
+ Added support for the SiS 630ET plus various bug fixes from linux kernel
+ source 2.4.17.
+ 01 March 2001 mdc 1.0
+ Initial Release. Tested with PCI based sis900 card and ThinkNIC
+ computer.
+ 20 March 2001 P.Koegel
+ added support for sis630e and PHY ICS1893 and RTL8201
+ Testet with SIS730S chipset + ICS1893
+*/
+
+\f
+/* Includes */
+
+#include "etherboot.h"
+#include <ipxe/pci.h>
+#include "nic.h"
+
+#include "sis900.h"
+
+/* Globals */
+
+static struct nic_operations sis900_operations;
+
+static int sis900_debug = 0;
+
+static unsigned short vendor, dev_id;
+static unsigned long ioaddr;
+static u8 pci_revision;
+
+static unsigned int cur_phy;
+
+static unsigned int cur_rx;
+
+struct {
+ BufferDesc txd;
+ BufferDesc rxd[NUM_RX_DESC];
+ unsigned char txb[TX_BUF_SIZE];
+ unsigned char rxb[NUM_RX_DESC * RX_BUF_SIZE];
+} sis900_bufs __shared;
+#define txd sis900_bufs.txd
+#define rxd sis900_bufs.rxd
+#define txb sis900_bufs.txb
+#define rxb sis900_bufs.rxb
+
+#if 0
+static struct mac_chip_info {
+ const char *name;
+ u16 vendor_id, device_id, flags;
+ int io_size;
+} mac_chip_table[] = {
+ { "SiS 900 PCI Fast Ethernet", PCI_VENDOR_ID_SIS, PCI_DEVICE_ID_SIS900,
+ PCI_COMMAND_IO|PCI_COMMAND_MASTER, SIS900_TOTAL_SIZE},
+ { "SiS 7016 PCI Fast Ethernet",PCI_VENDOR_ID_SIS, PCI_DEVICE_ID_SIS7016,
+ PCI_COMMAND_IO|PCI_COMMAND_MASTER, SIS900_TOTAL_SIZE},
+ {0,0,0,0,0} /* 0 terminated list. */
+};
+#endif
+
+static void sis900_read_mode(struct nic *nic, int phy_addr, int *speed, int *duplex);
+static void amd79c901_read_mode(struct nic *nic, int phy_addr, int *speed, int *duplex);
+static void ics1893_read_mode(struct nic *nic, int phy_addr, int *speed, int *duplex);
+static void rtl8201_read_mode(struct nic *nic, int phy_addr, int *speed, int *duplex);
+static void vt6103_read_mode(struct nic *nic, int phy_addr, int *speed, int *duplex);
+
+static struct mii_chip_info {
+ const char * name;
+ u16 phy_id0;
+ u16 phy_id1;
+ void (*read_mode) (struct nic *nic, int phy_addr, int *speed, int *duplex);
+} mii_chip_table[] = {
+ {"SiS 900 Internal MII PHY", 0x001d, 0x8000, sis900_read_mode},
+ {"SiS 7014 Physical Layer Solution", 0x0016, 0xf830,sis900_read_mode},
+ {"SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, sis900_read_mode},
+ {"AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, amd79c901_read_mode},
+ {"AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, amd79c901_read_mode},
+ {"ICS 1893 Integrated PHYceiver" , 0x0015, 0xf440,ics1893_read_mode},
+// {"NS 83851 PHY",0x2000, 0x5C20, MIX },
+ {"RTL 8201 10/100Mbps Phyceiver" , 0x0000, 0x8200,rtl8201_read_mode},
+ {"VIA 6103 10/100Mbps Phyceiver", 0x0101, 0x8f20,vt6103_read_mode},
+ {NULL,0,0,NULL}
+};
+
+static struct mii_phy {
+ struct mii_phy * next;
+ struct mii_chip_info * chip_info;
+ int phy_addr;
+ u16 status;
+} mii;
+
+\f
+
+#if 0
+// PCI to ISA bridge for SIS640E access
+static struct pci_device_id pci_isa_bridge_list[] = {
+ { .vendor = 0x1039, .device = 0x0008,
+ .name = "SIS 85C503/5513 PCI to ISA bridge"},
+};
+
+PCI_DRIVER( sis_bridge_pci_driver, pci_isa_bridge_list, PCI_NO_CLASS );
+
+static struct device_driver sis_bridge_driver = {
+ .name = "SIS ISA bridge",
+ .bus_driver = &pci_driver,
+ .bus_driver_info = ( struct bus_driver_info * ) &sis_bridge_pci_driver,
+};
+#endif
+
+/* Function Prototypes */
+
+static int sis900_probe(struct nic *nic,struct pci_device *pci);
+
+static u16 sis900_read_eeprom(int location);
+static void sis900_mdio_reset(long mdio_addr);
+static void sis900_mdio_idle(long mdio_addr);
+static u16 sis900_mdio_read(int phy_id, int location);
+#if 0
+static void sis900_mdio_write(int phy_id, int location, int val);
+#endif
+static void sis900_init(struct nic *nic);
+
+static void sis900_reset(struct nic *nic);
+
+static void sis900_init_rxfilter(struct nic *nic);
+static void sis900_init_txd(struct nic *nic);
+static void sis900_init_rxd(struct nic *nic);
+static void sis900_set_rx_mode(struct nic *nic);
+static void sis900_check_mode(struct nic *nic);
+
+static void sis900_transmit(struct nic *nic, const char *d,
+ unsigned int t, unsigned int s, const char *p);
+static int sis900_poll(struct nic *nic, int retrieve);
+
+static void sis900_disable(struct nic *nic);
+
+static void sis900_irq(struct nic *nic, irq_action_t action);
+
+/**
+ * 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_device * pci_dev __unused, struct nic *nic)
+{
+ u16 signature;
+ int i;
+
+ /* check to see if we have sane EEPROM */
+ signature = (u16) sis900_read_eeprom( EEPROMSignature);
+ if (signature == 0xffff || signature == 0x0000) {
+ printf ("sis900_probe: Error EERPOM read %hX\n", signature);
+ return 0;
+ }
+
+ /* get MAC address from EEPROM */
+ for (i = 0; i < 3; i++)
+ ((u16 *)(nic->node_addr))[i] = sis900_read_eeprom(i+EEPROMMACAddr);
+ 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_device * pci_dev __unused, struct nic *nic)
+{
+/* long ioaddr = net_dev->base_addr; */
+ long ee_addr = ioaddr + mear;
+ u32 waittime = 0;
+ int i;
+
+ printf("Alternate function\n");
+
+ outl(EEREQ, ee_addr);
+ while(waittime < 2000) {
+ if(inl(ee_addr) & EEGNT) {
+
+ /* get MAC address from EEPROM */
+ for (i = 0; i < 3; i++)
+ ((u16 *)(nic->node_addr))[i] = sis900_read_eeprom(i+EEPROMMACAddr);
+
+ outl(EEDONE, ee_addr);
+ return 1;
+ } else {
+ udelay(1);
+ waittime ++;
+ }
+ }
+ outl(EEDONE, ee_addr);
+ return 0;
+}
+
+/**
+ * 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_device * pci_dev __unused, struct nic *nic)
+{
+#if 0
+ u8 reg;
+ int i;
+ struct bus_loc bus_loc;
+ union {
+ struct bus_dev bus_dev;
+ struct pci_device isa_bridge;
+ } u;
+
+ /* find PCI to ISA bridge */
+ memset(&bus_loc, 0, sizeof(bus_loc));
+ if ( ! find_by_driver ( &bus_loc, &u.bus_dev, &sis_bridge_driver, 0 ) )
+ return 0;
+
+ pci_read_config_byte(&u.isa_bridge, 0x48, ®);
+ pci_write_config_byte(&u.isa_bridge, 0x48, reg | 0x40);
+
+ for (i = 0; i < ETH_ALEN; i++)
+ {
+ outb(0x09 + i, 0x70);
+ ((u8 *)(nic->node_addr))[i] = inb(0x71);
+ }
+ pci_write_config_byte(&u.isa_bridge, 0x48, reg & ~0x40);
+
+ return 1;
+#endif
+
+ /* Does not work with current bus/device model */
+ memset ( nic->node_addr, 0, sizeof ( nic->node_addr ) );
+ return 0;
+}
+
+/**
+ * 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 sis635_get_mac_addr(struct pci_device * pci_dev __unused, struct nic *nic)
+{
+ u32 rfcrSave;
+ u32 i;
+
+
+ rfcrSave = inl(rfcr + ioaddr);
+
+ outl(rfcrSave | RELOAD, ioaddr + cr);
+ outl(0, ioaddr + cr);
+
+ /* disable packet filtering before setting filter */
+ outl(rfcrSave & ~RFEN, rfcr + ioaddr);
+
+ /* load MAC addr to filter data register */
+ for (i = 0 ; i < 3 ; i++) {
+ outl((i << RFADDR_shift), ioaddr + rfcr);
+ *( ((u16 *)nic->node_addr) + i) = inw(ioaddr + rfdr);
+ }
+
+ /* enable packet filitering */
+ outl(rfcrSave | RFEN, rfcr + ioaddr);
+
+ return 1;
+}
+\f
+/*
+ * Function: sis900_probe
+ *
+ * Description: initializes initializes the NIC, retrieves the
+ * MAC address of the card, and sets up some globals required by
+ * other routines.
+ *
+ * Side effects:
+ * leaves the ioaddress of the sis900 chip in the variable ioaddr.
+ * leaves the sis900 initialized, and ready to receive packets.
+ *
+ * Returns: struct nic *: pointer to NIC data structure
+ */
+
+static int sis900_probe ( struct nic *nic, struct pci_device *pci ) {
+
+ int i;
+ int found=0;
+ int phy_addr;
+ u8 revision;
+ int ret;
+
+ if (pci->ioaddr == 0)
+ return 0;
+
+ nic->irqno = 0;
+ nic->ioaddr = pci->ioaddr;
+
+ ioaddr = pci->ioaddr;
+ vendor = pci->vendor;
+ dev_id = pci->device;
+
+ /* wakeup chip */
+ pci_write_config_dword(pci, 0x40, 0x00000000);
+
+ adjust_pci_device(pci);
+
+ /* get MAC address */
+ ret = 0;
+ pci_read_config_byte(pci, PCI_REVISION, &revision);
+
+ /* save for use later in sis900_reset() */
+ pci_revision = revision;
+
+ if (revision == SIS630E_900_REV)
+ ret = sis630e_get_mac_addr(pci, nic);
+ else if ((revision > 0x81) && (revision <= 0x90))
+ ret = sis635_get_mac_addr(pci, nic);
+ else if (revision == SIS96x_900_REV)
+ ret = sis96x_get_mac_addr(pci, nic);
+ else
+ ret = sis900_get_mac_addr(pci, nic);
+
+ if (ret == 0)
+ {
+ printf ("sis900_probe: Error MAC address not found\n");
+ return 0;
+ }
+
+ /* 630ET : set the mii access mode as software-mode */
+ if (revision == SIS630ET_900_REV)
+ outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
+
+ DBG( "sis900_probe: Vendor:%#hX Device:%#hX\n", vendor, dev_id );
+
+ /* probe for mii transceiver */
+ /* search for total of 32 possible mii phy addresses */
+
+ found = 0;
+ for (phy_addr = 0; phy_addr < 32; phy_addr++) {
+ u16 mii_status;
+ u16 phy_id0, phy_id1;
+
+ mii_status = sis900_mdio_read(phy_addr, MII_STATUS);
+ if (mii_status == 0xffff || mii_status == 0x0000)
+ /* the mii is not accessible, try next one */
+ continue;
+
+ phy_id0 = sis900_mdio_read(phy_addr, MII_PHY_ID0);
+ phy_id1 = sis900_mdio_read(phy_addr, MII_PHY_ID1);
+
+ /* search our mii table for the current mii */
+ for (i = 0; mii_chip_table[i].phy_id1; i++) {
+
+ if ((phy_id0 == mii_chip_table[i].phy_id0) &&
+ ((phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
+
+ printf("sis900_probe: %s transceiver found at address %d.\n",
+ mii_chip_table[i].name, phy_addr);
+
+ mii.chip_info = &mii_chip_table[i];
+ mii.phy_addr = phy_addr;
+ mii.status = sis900_mdio_read(phy_addr, MII_STATUS);
+ mii.next = NULL;
+
+ found=1;
+ break;
+ }
+ }
+ }
+
+ if (found == 0) {
+ printf("sis900_probe: No MII transceivers found!\n");
+ return 0;
+ }
+
+ /* Arbitrarily select the last PHY found as current PHY */
+ cur_phy = mii.phy_addr;
+ printf("sis900_probe: Using %s as default\n", mii.chip_info->name);
+
+ /* initialize device */
+ sis900_init(nic);
+ nic->nic_op = &sis900_operations;
+
+ return 1;
+}
+
+
+
+\f
+/*
+ * EEPROM Routines: These functions read and write to EEPROM for
+ * retrieving the MAC address and other configuration information about
+ * the card.
+ */
+
+/* Delay between EEPROM clock transitions. */
+#define eeprom_delay() inl(ee_addr)
+
+\f
+/* Function: sis900_read_eeprom
+ *
+ * Description: reads and returns a given location from EEPROM
+ *
+ * Arguments: int location: requested EEPROM location
+ *
+ * Returns: u16: contents of requested EEPROM location
+ *
+ */
+
+/* Read Serial EEPROM through EEPROM Access Register, Note that location is
+ in word (16 bits) unit */
+static u16 sis900_read_eeprom(int location)
+{
+ int i;
+ u16 retval = 0;
+ long ee_addr = ioaddr + mear;
+ u32 read_cmd = location | EEread;
+
+ outl(0, ee_addr);
+ eeprom_delay();
+ outl(EECS, ee_addr);
+ eeprom_delay();
+
+ /* Shift the read command (9) bits out. */
+ for (i = 8; i >= 0; i--) {
+ u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
+ outl(dataval, ee_addr);
+ eeprom_delay();
+ outl(dataval | EECLK, ee_addr);
+ eeprom_delay();
+ }
+ outl(EECS, ee_addr);
+ eeprom_delay();
+
+ /* read the 16-bits data in */
+ for (i = 16; i > 0; i--) {
+ outl(EECS, ee_addr);
+ eeprom_delay();
+ outl(EECS | EECLK, ee_addr);
+ eeprom_delay();
+ retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
+ eeprom_delay();
+ }
+
+ /* Terminate the EEPROM access. */
+ outl(0, ee_addr);
+ eeprom_delay();
+// outl(EECLK, ee_addr);
+
+ return (retval);
+}
+
+#define sis900_mdio_delay() inl(mdio_addr)
+
+\f
+/*
+ Read and write the MII management registers using software-generated
+ serial MDIO protocol. Note that the command bits and data bits are
+ sent out separately
+*/
+
+static void sis900_mdio_idle(long mdio_addr)
+{
+ outl(MDIO | MDDIR, mdio_addr);
+ sis900_mdio_delay();
+ outl(MDIO | MDDIR | MDC, mdio_addr);
+}
+
+/* Syncronize the MII management interface by shifting 32 one bits out. */
+static void sis900_mdio_reset(long mdio_addr)
+{
+ int i;
+
+ for (i = 31; i >= 0; i--) {
+ outl(MDDIR | MDIO, mdio_addr);
+ sis900_mdio_delay();
+ outl(MDDIR | MDIO | MDC, mdio_addr);
+ sis900_mdio_delay();
+ }
+ return;
+}
+
+static u16 sis900_mdio_read(int phy_id, int location)
+{
+ long mdio_addr = ioaddr + mear;
+ int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
+ u16 retval = 0;
+ int i;
+
+ sis900_mdio_reset(mdio_addr);
+ sis900_mdio_idle(mdio_addr);
+
+ for (i = 15; i >= 0; i--) {
+ int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
+ outl(dataval, mdio_addr);
+ sis900_mdio_delay();
+ outl(dataval | MDC, mdio_addr);
+ sis900_mdio_delay();
+ }
+
+ /* Read the 16 data bits. */
+ for (i = 16; i > 0; i--) {
+ outl(0, mdio_addr);
+ sis900_mdio_delay();
+ retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
+ outl(MDC, mdio_addr);
+ sis900_mdio_delay();
+ }
+ outl(0x00, mdio_addr);
+ return retval;
+}
+
+#if 0
+static void sis900_mdio_write(int phy_id, int location, int value)
+{
+ long mdio_addr = ioaddr + mear;
+ int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
+ int i;
+
+ sis900_mdio_reset(mdio_addr);
+ sis900_mdio_idle(mdio_addr);
+
+ /* Shift the command bits out. */
+ for (i = 15; i >= 0; i--) {
+ int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
+ outb(dataval, mdio_addr);
+ sis900_mdio_delay();
+ outb(dataval | MDC, mdio_addr);
+ sis900_mdio_delay();
+ }
+ sis900_mdio_delay();
+
+ /* Shift the value bits out. */
+ for (i = 15; i >= 0; i--) {
+ int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
+ outl(dataval, mdio_addr);
+ sis900_mdio_delay();
+ outl(dataval | MDC, mdio_addr);
+ sis900_mdio_delay();
+ }
+ sis900_mdio_delay();
+
+ /* Clear out extra bits. */
+ for (i = 2; i > 0; i--) {
+ outb(0, mdio_addr);
+ sis900_mdio_delay();
+ outb(MDC, mdio_addr);
+ sis900_mdio_delay();
+ }
+ outl(0x00, mdio_addr);
+ return;
+}
+#endif
+
+\f
+/* Function: sis900_init
+ *
+ * Description: resets the ethernet controller chip and various
+ * data structures required for sending and receiving packets.
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * returns: void.
+ */
+
+static void
+sis900_init(struct nic *nic)
+{
+ /* Soft reset the chip. */
+ sis900_reset(nic);
+
+ sis900_init_rxfilter(nic);
+
+ sis900_init_txd(nic);
+ sis900_init_rxd(nic);
+
+ sis900_set_rx_mode(nic);
+
+ sis900_check_mode(nic);
+
+ outl(RxENA| inl(ioaddr + cr), ioaddr + cr);
+}
+
+\f
+/*
+ * Function: sis900_reset
+ *
+ * Description: disables interrupts and soft resets the controller chip
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: void.
+ */
+
+static void
+sis900_reset(struct nic *nic __unused)
+{
+ int i = 0;
+ u32 status = TxRCMP | RxRCMP;
+
+ outl(0, ioaddr + ier);
+ outl(0, ioaddr + imr);
+ outl(0, ioaddr + rfcr);
+
+ outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
+
+ /* Check that the chip has finished the reset. */
+ while (status && (i++ < 1000)) {
+ status ^= (inl(isr + ioaddr) & status);
+ }
+
+ if( (pci_revision >= SIS635A_900_REV) || (pci_revision == SIS900B_900_REV) )
+ outl(PESEL | RND_CNT, ioaddr + cfg);
+ else
+ outl(PESEL, ioaddr + cfg);
+}
+
+\f
+/* Function: sis_init_rxfilter
+ *
+ * Description: sets receive filter address to our MAC address
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * returns: void.
+ */
+
+static void
+sis900_init_rxfilter(struct nic *nic)
+{
+ u32 rfcrSave;
+ int i;
+
+ rfcrSave = inl(rfcr + ioaddr);
+
+ /* disable packet filtering before setting filter */
+ outl(rfcrSave & ~RFEN, rfcr + ioaddr);
+
+ /* load MAC addr to filter data register */
+ for (i = 0 ; i < 3 ; i++) {
+ u32 w;
+
+ w = (u32) *((u16 *)(nic->node_addr)+i);
+ outl((i << RFADDR_shift), ioaddr + rfcr);
+ outl(w, ioaddr + rfdr);
+
+ if (sis900_debug > 0)
+ printf("sis900_init_rxfilter: Receive Filter Addrss[%d]=%X\n",
+ i, inl(ioaddr + rfdr));
+ }
+
+ /* enable packet filitering */
+ outl(rfcrSave | RFEN, rfcr + ioaddr);
+}
+
+\f
+/*
+ * Function: sis_init_txd
+ *
+ * Description: initializes the Tx descriptor
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * returns: void.
+ */
+
+static void
+sis900_init_txd(struct nic *nic __unused)
+{
+ txd.link = (u32) 0;
+ txd.cmdsts = (u32) 0;
+ txd.bufptr = virt_to_bus(&txb[0]);
+
+ /* load Transmit Descriptor Register */
+ outl(virt_to_bus(&txd), ioaddr + txdp);
+ if (sis900_debug > 0)
+ printf("sis900_init_txd: TX descriptor register loaded with: %X\n",
+ inl(ioaddr + txdp));
+}
+
+\f
+/* Function: sis_init_rxd
+ *
+ * Description: initializes the Rx descriptor ring
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: void.
+ */
+
+static void
+sis900_init_rxd(struct nic *nic __unused)
+{
+ int i;
+
+ cur_rx = 0;
+
+ /* init RX descriptor */
+ for (i = 0; i < NUM_RX_DESC; i++) {
+ rxd[i].link = virt_to_bus((i+1 < NUM_RX_DESC) ? &rxd[i+1] : &rxd[0]);
+ rxd[i].cmdsts = (u32) RX_BUF_SIZE;
+ rxd[i].bufptr = virt_to_bus(&rxb[i*RX_BUF_SIZE]);
+ if (sis900_debug > 0)
+ printf("sis900_init_rxd: rxd[%d]=%p link=%X cmdsts=%X bufptr=%X\n",
+ i, &rxd[i], (unsigned int) rxd[i].link, (unsigned int) rxd[i].cmdsts,
+ (unsigned int) rxd[i].bufptr);
+ }
+
+ /* load Receive Descriptor Register */
+ outl(virt_to_bus(&rxd[0]), ioaddr + rxdp);
+
+ if (sis900_debug > 0)
+ printf("sis900_init_rxd: RX descriptor register loaded with: %X\n",
+ inl(ioaddr + rxdp));
+
+}
+
+\f
+/* Function: sis_init_rxd
+ *
+ * Description:
+ * sets the receive mode to accept all broadcast packets and packets
+ * with our MAC address, and reject all multicast packets.
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: void.
+ */
+
+static void sis900_set_rx_mode(struct nic *nic __unused)
+{
+ int i, table_entries;
+ u32 rx_mode;
+ u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
+
+ if((pci_revision == SIS635A_900_REV) || (pci_revision == SIS900B_900_REV))
+ table_entries = 16;
+ else
+ table_entries = 8;
+
+ /* accept all multicast packet */
+ rx_mode = RFAAB | RFAAM;
+ for (i = 0; i < table_entries; i++)
+ mc_filter[i] = 0xffff;
+
+ /* update Multicast Hash Table in Receive Filter */
+ for (i = 0; i < table_entries; i++) {
+ /* why plus 0x04? That makes the correct value for hash table. */
+ outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
+ outl(mc_filter[i], ioaddr + rfdr);
+ }
+
+ /* Accept Broadcast and multicast packets, destination addresses that match
+ our MAC address */
+ outl(RFEN | rx_mode, ioaddr + rfcr);
+
+ return;
+}
+
+\f
+/* Function: sis900_check_mode
+ *
+ * Description: checks the state of transmit and receive
+ * parameters on the NIC, and updates NIC registers to match
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: void.
+ */
+
+static void
+sis900_check_mode(struct nic *nic)
+{
+ int speed, duplex;
+ u32 tx_flags = 0, rx_flags = 0;
+
+ mii.chip_info->read_mode(nic, cur_phy, &speed, &duplex);
+
+ if( inl(ioaddr + cfg) & EDB_MASTER_EN ) {
+ tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) | (TX_FILL_THRESH << TxFILLT_shift);
+ rx_flags = DMA_BURST_64 << RxMXDMA_shift;
+ }
+ else {
+ tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) | (TX_FILL_THRESH << TxFILLT_shift);
+ rx_flags = DMA_BURST_512 << RxMXDMA_shift;
+ }
+
+ if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
+ rx_flags |= (RxDRNT_10 << RxDRNT_shift);
+ tx_flags |= (TxDRNT_10 << TxDRNT_shift);
+ }
+ else {
+ rx_flags |= (RxDRNT_100 << RxDRNT_shift);
+ tx_flags |= (TxDRNT_100 << TxDRNT_shift);
+ }
+
+ if (duplex == FDX_CAPABLE_FULL_SELECTED) {
+ tx_flags |= (TxCSI | TxHBI);
+ rx_flags |= RxATX;
+ }
+
+ outl (tx_flags, ioaddr + txcfg);
+ outl (rx_flags, ioaddr + rxcfg);
+}
+
+\f
+/* Function: sis900_read_mode
+ *
+ * Description: retrieves and displays speed and duplex
+ * parameters from the NIC
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: void.
+ */
+
+static void
+sis900_read_mode(struct nic *nic __unused, int phy_addr, int *speed, int *duplex)
+{
+ int i = 0;
+ u32 status;
+ u16 phy_id0, phy_id1;
+
+ /* STSOUT register is Latched on Transition, read operation updates it */
+ do {
+ status = sis900_mdio_read(phy_addr, MII_STSOUT);
+ } while (i++ < 2);
+
+ *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;
+
+ /* Workaround for Realtek RTL8201 PHY issue */
+ phy_id0 = sis900_mdio_read(phy_addr, MII_PHY_ID0);
+ phy_id1 = sis900_mdio_read(phy_addr, MII_PHY_ID1);
+ if((phy_id0 == 0x0000) && ((phy_id1 & 0xFFF0) == 0x8200)){
+ if(sis900_mdio_read(phy_addr, MII_CONTROL) & MII_CNTL_FDX)
+ *duplex = FDX_CAPABLE_FULL_SELECTED;
+ if(sis900_mdio_read(phy_addr, 0x0019) & 0x01)
+ *speed = HW_SPEED_100_MBPS;
+ }
+
+ if (status & MII_STSOUT_LINK_FAIL)
+ printf("sis900_read_mode: Media Link Off\n");
+ else
+ printf("sis900_read_mode: Media Link On %s %s-duplex \n",
+ *speed == HW_SPEED_100_MBPS ?
+ "100mbps" : "10mbps",
+ *duplex == FDX_CAPABLE_FULL_SELECTED ?
+ "full" : "half");
+}
+
+\f
+/* Function: amd79c901_read_mode
+ *
+ * Description: retrieves and displays speed and duplex
+ * parameters from the NIC
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: void.
+ */
+
+static void
+amd79c901_read_mode(struct nic *nic __unused, int phy_addr, int *speed, int *duplex)
+{
+ int i;
+ u16 status;
+
+ for (i = 0; i < 2; i++)
+ status = sis900_mdio_read(phy_addr, MII_STATUS);
+
+ if (status & MII_STAT_CAN_AUTO) {
+ /* 10BASE-T PHY */
+ for (i = 0; i < 2; i++)
+ status = sis900_mdio_read(phy_addr, MII_STATUS_SUMMARY);
+ if (status & MII_STSSUM_SPD)
+ *speed = HW_SPEED_100_MBPS;
+ else
+ *speed = HW_SPEED_10_MBPS;
+ if (status & MII_STSSUM_DPLX)
+ *duplex = FDX_CAPABLE_FULL_SELECTED;
+ else
+ *duplex = FDX_CAPABLE_HALF_SELECTED;
+
+ if (status & MII_STSSUM_LINK)
+ printf("amd79c901_read_mode: Media Link On %s %s-duplex \n",
+ *speed == HW_SPEED_100_MBPS ?
+ "100mbps" : "10mbps",
+ *duplex == FDX_CAPABLE_FULL_SELECTED ?
+ "full" : "half");
+ else
+ printf("amd79c901_read_mode: Media Link Off\n");
+ }
+ else {
+ /* HomePNA */
+ *speed = HW_SPEED_HOME;
+ *duplex = FDX_CAPABLE_HALF_SELECTED;
+ if (status & MII_STAT_LINK)
+ printf("amd79c901_read_mode:Media Link On 1mbps half-duplex \n");
+ else
+ printf("amd79c901_read_mode: Media Link Off\n");
+ }
+}
+
+\f
+/**
+ * ics1893_read_mode: - read media mode for ICS1893 PHY
+ * @net_dev: the net device to read mode for
+ * @phy_addr: mii phy address
+ * @speed: the transmit speed to be determined
+ * @duplex: the duplex mode to be determined
+ *
+ * ICS1893 PHY use Quick Poll Detailed Status register
+ * to determine the speed and duplex mode for sis900
+ */
+
+static void ics1893_read_mode(struct nic *nic __unused, int phy_addr, int *speed, int *duplex)
+{
+ int i = 0;
+ u32 status;
+
+ /* MII_QPDSTS is Latched, read twice in succession will reflect the current state */
+ for (i = 0; i < 2; i++)
+ status = sis900_mdio_read(phy_addr, MII_QPDSTS);
+
+ if (status & MII_STSICS_SPD)
+ *speed = HW_SPEED_100_MBPS;
+ else
+ *speed = HW_SPEED_10_MBPS;
+
+ if (status & MII_STSICS_DPLX)
+ *duplex = FDX_CAPABLE_FULL_SELECTED;
+ else
+ *duplex = FDX_CAPABLE_HALF_SELECTED;
+
+ if (status & MII_STSICS_LINKSTS)
+ printf("ics1893_read_mode: Media Link On %s %s-duplex \n",
+ *speed == HW_SPEED_100_MBPS ?
+ "100mbps" : "10mbps",
+ *duplex == FDX_CAPABLE_FULL_SELECTED ?
+ "full" : "half");
+ else
+ printf("ics1893_read_mode: Media Link Off\n");
+}
+
+/**
+ * rtl8201_read_mode: - read media mode for rtl8201 phy
+ * @nic: the net device to read mode for
+ * @phy_addr: mii phy address
+ * @speed: the transmit speed to be determined
+ * @duplex: the duplex mode to be determined
+ *
+ * read MII_STATUS register from rtl8201 phy
+ * to determine the speed and duplex mode for sis900
+ */
+
+static void rtl8201_read_mode(struct nic *nic __unused, int phy_addr, int *speed, int *duplex)
+{
+ u32 status;
+
+ status = sis900_mdio_read(phy_addr, MII_STATUS);
+
+ if (status & MII_STAT_CAN_TX_FDX) {
+ *speed = HW_SPEED_100_MBPS;
+ *duplex = FDX_CAPABLE_FULL_SELECTED;
+ }
+ else if (status & MII_STAT_CAN_TX) {
+ *speed = HW_SPEED_100_MBPS;
+ *duplex = FDX_CAPABLE_HALF_SELECTED;
+ }
+ else if (status & MII_STAT_CAN_T_FDX) {
+ *speed = HW_SPEED_10_MBPS;
+ *duplex = FDX_CAPABLE_FULL_SELECTED;
+ }
+ else if (status & MII_STAT_CAN_T) {
+ *speed = HW_SPEED_10_MBPS;
+ *duplex = FDX_CAPABLE_HALF_SELECTED;
+ }
+
+ if (status & MII_STAT_LINK)
+ printf("rtl8201_read_mode: Media Link On %s %s-duplex \n",
+ *speed == HW_SPEED_100_MBPS ?
+ "100mbps" : "10mbps",
+ *duplex == FDX_CAPABLE_FULL_SELECTED ?
+ "full" : "half");
+ else
+ printf("rtl8201_read_config_mode: Media Link Off\n");
+}
+
+/**
+ * vt6103_read_mode: - read media mode for vt6103 phy
+ * @nic: the net device to read mode for
+ * @phy_addr: mii phy address
+ * @speed: the transmit speed to be determined
+ * @duplex: the duplex mode to be determined
+ *
+ * read MII_STATUS register from rtl8201 phy
+ * to determine the speed and duplex mode for sis900
+ */
+
+static void vt6103_read_mode(struct nic *nic __unused, int phy_addr, int *speed, int *duplex)
+{
+ u32 status;
+
+ status = sis900_mdio_read(phy_addr, MII_STATUS);
+
+ if (status & MII_STAT_CAN_TX_FDX) {
+ *speed = HW_SPEED_100_MBPS;
+ *duplex = FDX_CAPABLE_FULL_SELECTED;
+ }
+ else if (status & MII_STAT_CAN_TX) {
+ *speed = HW_SPEED_100_MBPS;
+ *duplex = FDX_CAPABLE_HALF_SELECTED;
+ }
+ else if (status & MII_STAT_CAN_T_FDX) {
+ *speed = HW_SPEED_10_MBPS;
+ *duplex = FDX_CAPABLE_FULL_SELECTED;
+ }
+ else if (status & MII_STAT_CAN_T) {
+ *speed = HW_SPEED_10_MBPS;
+ *duplex = FDX_CAPABLE_HALF_SELECTED;
+ }
+
+ if (status & MII_STAT_LINK)
+ printf("vt6103_read_mode: Media Link On %s %s-duplex \n",
+ *speed == HW_SPEED_100_MBPS ?
+ "100mbps" : "10mbps",
+ *duplex == FDX_CAPABLE_FULL_SELECTED ?
+ "full" : "half");
+ else
+ printf("vt6103_read_config_mode: Media Link Off\n");
+}
+
+/* Function: sis900_transmit
+ *
+ * Description: transmits a packet and waits for completion or timeout.
+ *
+ * Arguments: char d[6]: destination ethernet address.
+ * unsigned short t: ethernet protocol type.
+ * unsigned short s: size of the data-part of the packet.
+ * char *p: the data for the packet.
+ *
+ * Returns: void.
+ */
+
+static void
+sis900_transmit(struct nic *nic,
+ const char *d, /* Destination */
+ unsigned int t, /* Type */
+ unsigned int s, /* size */
+ const char *p) /* Packet */
+{
+ u32 to, nstype;
+ volatile u32 tx_status;
+
+ /* Stop the transmitter */
+ outl(TxDIS | inl(ioaddr + cr), ioaddr + cr);
+
+ /* load Transmit Descriptor Register */
+ outl(virt_to_bus(&txd), ioaddr + txdp);
+ if (sis900_debug > 1)
+ printf("sis900_transmit: TX descriptor register loaded with: %X\n",
+ inl(ioaddr + txdp));
+
+ memcpy(txb, d, ETH_ALEN);
+ memcpy(txb + ETH_ALEN, nic->node_addr, ETH_ALEN);
+ nstype = htons(t);
+ memcpy(txb + 2 * ETH_ALEN, (char*)&nstype, 2);
+ memcpy(txb + ETH_HLEN, p, s);
+
+ s += ETH_HLEN;
+ s &= DSIZE;
+
+ if (sis900_debug > 1)
+ printf("sis900_transmit: sending %d bytes ethtype %hX\n", (int) s, t);
+
+ /* pad to minimum packet size */
+ while (s < ETH_ZLEN)
+ txb[s++] = '\0';
+
+ /* set the transmit buffer descriptor and enable Transmit State Machine */
+ txd.bufptr = virt_to_bus(&txb[0]);
+ txd.cmdsts = (u32) OWN | s;
+
+ /* restart the transmitter */
+ outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
+
+ if (sis900_debug > 1)
+ printf("sis900_transmit: Queued Tx packet size %d.\n", (int) s);
+
+ to = currticks() + TX_TIMEOUT;
+
+ while (((tx_status=txd.cmdsts) & OWN) && (currticks() < to))
+ /* wait */ ;
+
+ if (currticks() >= to) {
+ printf("sis900_transmit: TX Timeout! Tx status %X.\n",
+ (unsigned int) tx_status);
+ }
+
+ if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
+ /* packet unsuccessfully transmited */
+ printf("sis900_transmit: Transmit error, Tx status %X.\n",
+ (unsigned int) tx_status);
+ }
+ /* Disable interrupts by clearing the interrupt mask. */
+ outl(0, ioaddr + imr);
+}
+
+\f
+/* Function: sis900_poll
+ *
+ * Description: checks for a received packet and returns it if found.
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: 1 if a packet was received.
+ * 0 if no packet was received.
+ *
+ * Side effects:
+ * Returns (copies) the packet to the array nic->packet.
+ * Returns the length of the packet in nic->packetlen.
+ */
+
+static int
+sis900_poll(struct nic *nic, int retrieve)
+{
+ u32 rx_status = rxd[cur_rx].cmdsts;
+ int retstat = 0;
+
+ /* acknowledge interrupts by reading interrupt status register */
+ inl(ioaddr + isr);
+
+ if (sis900_debug > 2)
+ printf("sis900_poll: cur_rx:%d, status:%X\n", cur_rx,
+ (unsigned int) rx_status);
+
+ if (!(rx_status & OWN))
+ return retstat;
+
+ if (sis900_debug > 1)
+ printf("sis900_poll: got a packet: cur_rx:%d, status:%X\n",
+ cur_rx, (unsigned int) rx_status);
+
+ if ( ! retrieve ) return 1;
+
+ nic->packetlen = (rx_status & DSIZE) - CRC_SIZE;
+
+ if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
+ /* corrupted packet received */
+ printf("sis900_poll: Corrupted packet received, buffer status = %X\n",
+ (unsigned int) rx_status);
+ retstat = 0;
+ } else {
+ /* give packet to higher level routine */
+ memcpy(nic->packet, (rxb + cur_rx*RX_BUF_SIZE), nic->packetlen);
+ retstat = 1;
+ }
+
+ /* return the descriptor and buffer to receive ring */
+ rxd[cur_rx].cmdsts = RX_BUF_SIZE;
+ rxd[cur_rx].bufptr = virt_to_bus(&rxb[cur_rx*RX_BUF_SIZE]);
+
+ if (++cur_rx == NUM_RX_DESC)
+ cur_rx = 0;
+
+ /* re-enable the potentially idle receive state machine */
+ outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
+
+ return retstat;
+
+}
+
+\f
+/* Function: sis900_disable
+ *
+ * Description: Turns off interrupts and stops Tx and Rx engines
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ *
+ * Returns: void.
+ */
+
+static void
+sis900_disable ( struct nic *nic ) {
+
+ sis900_init(nic);
+
+ /* Disable interrupts by clearing the interrupt mask. */
+ outl(0, ioaddr + imr);
+ outl(0, ioaddr + ier);
+
+ /* Stop the chip's Tx and Rx Status Machine */
+ outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
+}
+
+\f
+/* Function: sis900_irq
+ *
+ * Description: Enable, Disable, or Force, interrupts
+ *
+ * Arguments: struct nic *nic: NIC data structure
+ * irq_action_t action: Requested action
+ *
+ * Returns: void.
+ */
+
+static void
+sis900_irq(struct nic *nic __unused, irq_action_t action __unused)
+{
+ switch ( action ) {
+ case DISABLE :
+ outl(0, ioaddr + imr);
+ break;
+ case ENABLE :
+ outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
+ break;
+ case FORCE :
+ break;
+ }
+}
+
+static struct nic_operations sis900_operations = {
+ .connect = dummy_connect,
+ .poll = sis900_poll,
+ .transmit = sis900_transmit,
+ .irq = sis900_irq,
+};
+
+static struct pci_device_id sis900_nics[] = {
+PCI_ROM(0x1039, 0x0900, "sis900", "SIS900", 0),
+PCI_ROM(0x1039, 0x7016, "sis7016", "SIS7016", 0),
+};
+
+PCI_DRIVER ( sis900_driver, sis900_nics, PCI_NO_CLASS );
+
+DRIVER ( "SIS900", nic_driver, pci_driver, sis900_driver,
+ sis900_probe, sis900_disable );
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * c-indent-level: 8
+ * tab-width: 8
+ * End:
+ */
Code Review / kvmfornfv.git / blobdiff