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Diffstat (limited to 'contrib/syslinux-4.02/gpxe/src/drivers/net/sis900.c')
| -rw-r--r-- | contrib/syslinux-4.02/gpxe/src/drivers/net/sis900.c | 1304 |
1 files changed, 1304 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/drivers/net/sis900.c b/contrib/syslinux-4.02/gpxe/src/drivers/net/sis900.c new file mode 100644 index 0000000..da14a09 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/drivers/net/sis900.c @@ -0,0 +1,1304 @@ +/* -*- 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 +*/ + + +/* Includes */ + +#include "etherboot.h" +#include <gpxe/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}, + {0,0,0,0} +}; + +static struct mii_phy { + struct mii_phy * next; + struct mii_chip_info * chip_info; + int phy_addr; + u16 status; +} mii; + + + +#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; +} + +/* + * 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 recieve 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 accessable, 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; +} + + + + +/* + * 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) + + +/* 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) + + +/* + Read and write the MII management registers using software-generated + serial MDIO protocol. Note that the command bits and data bits are + send out seperately +*/ + +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 + + +/* 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); +} + + +/* + * 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); +} + + +/* 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); +} + + +/* + * 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)); +} + + +/* 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)); + +} + + +/* 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; +} + + +/* 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); +} + + +/* 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"); +} + + +/* 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"); + } +} + + +/** + * 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); +} + + +/* 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 recieved. + * 0 if no pacet was recieved. + * + * 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; + u32 intr_status; + int retstat = 0; + + /* acknowledge interrupts by reading interrupt status register */ + intr_status = 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; + +} + + +/* 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); +} + + +/* 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: + */ |