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/* -*- Mode:C; c-basic-offset:4; -*- */
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/* Definitions for SiS ethernet controllers including 7014/7016 and 900
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* SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
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* preliminary Rev. 1.0 Jan. 14, 1998
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* SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
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* preliminary Rev. 1.0 Nov. 10, 1998
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* SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
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* preliminary Rev. 1.0 Jan. 18, 1998
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* http://www.sis.com.tw/support/databook.htm
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FILE_LICENCE ( GPL_ANY );
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/* MAC operationl registers of SiS 7016 and SiS 900 ethernet controller */
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/* The I/O extent, SiS 900 needs 256 bytes of io address */
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#define SIS900_TOTAL_SIZE 0x100
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/* Symbolic offsets to registers. */
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enum sis900_registers {
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cr=0x0, /* Command Register */
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cfg=0x4, /* Configuration Register */
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mear=0x8, /* EEPROM Access Register */
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ptscr=0xc, /* PCI Test Control Register */
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isr=0x10, /* Interrupt Status Register */
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imr=0x14, /* Interrupt Mask Register */
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ier=0x18, /* Interrupt Enable Register */
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epar=0x18, /* Enhanced PHY Access Register */
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txdp=0x20, /* Transmit Descriptor Pointer Register */
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txcfg=0x24, /* Transmit Configuration Register */
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rxdp=0x30, /* Receive Descriptor Pointer Register */
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rxcfg=0x34, /* Receive Configuration Register */
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flctrl=0x38, /* Flow Control Register */
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rxlen=0x3c, /* Receive Packet Length Register */
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rfcr=0x48, /* Receive Filter Control Register */
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rfdr=0x4C, /* Receive Filter Data Register */
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pmctrl=0xB0, /* Power Management Control Register */
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pmer=0xB4 /* Power Management Wake-up Event Register */
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/* Symbolic names for bits in various registers */
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enum sis900_command_register_bits {
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ACCESSMODE = 0x00000200,
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enum sis900_configuration_register_bits {
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DESCRFMT = 0x00000100, /* 7016 specific */
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FAIR_BACKOFF = 0x00000200,
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EDB_MASTER_EN = 0x00002000
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enum sis900_eeprom_access_reigster_bits {
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MDIO = 0x00000010, /* 7016 specific */
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enum sis900_interrupt_register_bits {
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TxPAUSEEND = 0x08000000,
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RxEARLY = 0x00000008,
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enum sis900_interrupt_enable_reigster_bits {
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/* maximum dma burst fro transmission and receive*/
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#define MAX_DMA_RANGE 7 /* actually 0 means MAXIMUM !! */
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#define TxMXDMA_shift 20
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#define RxMXDMA_shift 20
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#define TX_DMA_BURST 0
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#define RX_DMA_BURST 0
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enum sis900_tx_rx_dma{
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DMA_BURST_512 = 0, DMA_BURST_64 = 5
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/* transmit FIFO threshholds */
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#define TX_FILL_THRESH 16 /* 1/4 FIFO size */
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#define TxFILLT_shift 8
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#define TxDRNT_shift 0
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#define TxDRNT_100 48 /* 3/4 FIFO size */
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#define TxDRNT_10 16 /* 1/2 FIFO size */
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enum sis900_transmit_config_register_bits {
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TxFILLT = 0x00003F00,
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/* recevie FIFO thresholds */
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#define RxDRNT_shift 1
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#define RxDRNT_100 16 /* 1/2 FIFO size */
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#define RxDRNT_10 24 /* 3/4 FIFO size */
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enum sis900_reveive_config_register_bits {
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#define RFAA_shift 28
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#define RFADDR_shift 16
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enum sis900_receive_filter_control_register_bits {
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RFPromiscuous = (RFAAB|RFAAM|RFAAP)
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enum sis900_reveive_filter_data_mask {
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/* EEPROM Addresses */
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enum sis900_eeprom_address {
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EEPROMSignature = 0x00,
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EEPROMVendorID = 0x02,
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EEPROMDeviceID = 0x03,
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EEPROMMACAddr = 0x08,
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EEPROMChecksum = 0x0b
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/* The EEPROM commands include the alway-set leading bit. Refer to NM93Cxx datasheet */
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enum sis900_eeprom_command {
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EEwriteEnable = 0x0130,
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EEwriteDisable = 0x0100,
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/* For SiS962 or SiS963, request the eeprom software access */
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enum sis96x_eeprom_command {
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EEREQ = 0x00000400, EEDONE = 0x00000200, EEGNT = 0x00000100
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/* Manamgement Data I/O (mdio) frame */
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#define MIIread 0x6000
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#define MIIwrite 0x5002
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#define MIIpmdShift 7
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#define MIIregShift 2
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#define MIIcmdShift 16
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/* Buffer Descriptor Status*/
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enum sis900_buffer_status {
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/* Status for TX Buffers */
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enum sis900_tx_buffer_status {
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UNDERRUN = 0x02000000,
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NOCARRIER = 0x01000000,
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EXCDEFER = 0x00400000,
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EXCCOLL = 0x00100000,
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enum sis900_rx_bufer_status {
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OVERRUN = 0x02000000,
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UNIMATCH = 0x00800000,
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TOOLONG = 0x00400000,
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RXISERR = 0x00100000,
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/* MII register offsets */
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MII_CONTROL = 0x0000,
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MII_PHY_ID0 = 0x0002,
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MII_PHY_ID1 = 0x0003,
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/* mii registers specific to SiS 900 */
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enum sis_mii_registers {
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MII_CONFIG1 = 0x0010,
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MII_CONFIG2 = 0x0011,
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/* mii registers specific to AMD 79C901 */
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enum amd_mii_registers {
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MII_STATUS_SUMMARY = 0x0018
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/* mii registers specific to ICS 1893 */
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enum ics_mii_registers {
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MII_EXTCTRL = 0x0010, MII_QPDSTS = 0x0011, MII_10BTOP = 0x0012,
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MII_EXTCTRL2 = 0x0013
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/* MII Control register bit definitions. */
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enum mii_control_register_bits {
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MII_CNTL_FDX = 0x0100,
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MII_CNTL_RST_AUTO = 0x0200,
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MII_CNTL_ISOLATE = 0x0400,
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MII_CNTL_PWRDWN = 0x0800,
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MII_CNTL_AUTO = 0x1000,
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MII_CNTL_SPEED = 0x2000,
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MII_CNTL_LPBK = 0x4000,
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MII_CNTL_RESET = 0x8000
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/* MII Status register bit */
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enum mii_status_register_bits {
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MII_STAT_EXT = 0x0001,
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MII_STAT_JAB = 0x0002,
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MII_STAT_LINK = 0x0004,
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MII_STAT_CAN_AUTO = 0x0008,
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MII_STAT_FAULT = 0x0010,
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MII_STAT_AUTO_DONE = 0x0020,
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MII_STAT_CAN_T = 0x0800,
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MII_STAT_CAN_T_FDX = 0x1000,
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MII_STAT_CAN_TX = 0x2000,
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MII_STAT_CAN_TX_FDX = 0x4000,
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MII_STAT_CAN_T4 = 0x8000
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#define MII_ID1_OUI_LO 0xFC00 /* low bits of OUI mask */
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#define MII_ID1_MODEL 0x03F0 /* model number */
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#define MII_ID1_REV 0x000F /* model number */
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/* MII NWAY Register Bits ...
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valid for the ANAR (Auto-Negotiation Advertisement) and
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ANLPAR (Auto-Negotiation Link Partner) registers */
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enum mii_nway_register_bits {
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MII_NWAY_NODE_SEL = 0x001f,
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MII_NWAY_CSMA_CD = 0x0001,
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MII_NWAY_T_FDX = 0x0040,
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MII_NWAY_TX = 0x0080,
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MII_NWAY_TX_FDX = 0x0100,
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MII_NWAY_T4 = 0x0200,
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MII_NWAY_PAUSE = 0x0400,
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MII_NWAY_RF = 0x2000,
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MII_NWAY_ACK = 0x4000,
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enum mii_stsout_register_bits {
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MII_STSOUT_LINK_FAIL = 0x4000,
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MII_STSOUT_SPD = 0x0080,
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MII_STSOUT_DPLX = 0x0040
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enum mii_stsics_register_bits {
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MII_STSICS_SPD = 0x8000, MII_STSICS_DPLX = 0x4000,
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MII_STSICS_LINKSTS = 0x0001
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enum mii_stssum_register_bits {
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MII_STSSUM_LINK = 0x0008,
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MII_STSSUM_DPLX = 0x0004,
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MII_STSSUM_AUTO = 0x0002,
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MII_STSSUM_SPD = 0x0001
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enum sis900_revision_id {
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SIS630A_900_REV = 0x80, SIS630E_900_REV = 0x81,
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SIS630S_900_REV = 0x82, SIS630EA1_900_REV = 0x83,
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SIS630ET_900_REV = 0x84, SIS635A_900_REV = 0x90,
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SIS96x_900_REV = 0X91, SIS900B_900_REV = 0x03
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enum sis630_revision_id {
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SIS630A0 = 0x00, SIS630A1 = 0x01,
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SIS630B0 = 0x10, SIS630B1 = 0x11
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#define FDX_CAPABLE_DUPLEX_UNKNOWN 0
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#define FDX_CAPABLE_HALF_SELECTED 1
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#define FDX_CAPABLE_FULL_SELECTED 2
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#define HW_SPEED_UNCONFIG 0
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#define HW_SPEED_HOME 1
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#define HW_SPEED_10_MBPS 10
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#define HW_SPEED_100_MBPS 100
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#define HW_SPEED_DEFAULT (HW_SPEED_100_MBPS)
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#define MAC_HEADER_SIZE 14
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#define TX_BUF_SIZE 1536
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#define RX_BUF_SIZE 1536
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#define NUM_RX_DESC 4 /* Number of Rx descriptor registers. */
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/* Time in ticks before concluding the transmitter is hung. */
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#define TX_TIMEOUT (4*TICKS_PER_SEC)
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typedef struct _BufferDesc {