arch/common/boot/grub/netboot/sis900.h

   1 /* -*- Mode:C; c-basic-offset:4; -*- */
   2
   3 /* Definitions for SiS ethernet controllers including 7014/7016 and 900
   4  * References:
   5  *   SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
   6  *      preliminary Rev. 1.0 Jan. 14, 1998
   7  *   SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
   8  *      preliminary Rev. 1.0 Nov. 10, 1998
   9  *   SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
  10  *      preliminary Rev. 1.0 Jan. 18, 1998
  11  *   http://www.sis.com.tw/support/databook.htm
  12  */
  13
  14 /* MAC operationl registers of SiS 7016 and SiS 900 ethernet controller */
  15 /* The I/O extent, SiS 900 needs 256 bytes of io address */
  16 #define SIS900_TOTAL_SIZE 0x100
  17
  18 /* Symbolic offsets to registers. */
  19 enum sis900_registers {
  20     cr=0x0,                 /* Command Register */
  21     cfg=0x4,                /* Configuration Register */
  22     mear=0x8,               /* EEPROM Access Register */
  23     ptscr=0xc,              /* PCI Test Control Register */
  24     isr=0x10,               /* Interrupt Status Register */
  25     imr=0x14,               /* Interrupt Mask Register */
  26     ier=0x18,               /* Interrupt Enable Register */
  27     epar=0x18,              /* Enhanced PHY Access Register */
  28     txdp=0x20,              /* Transmit Descriptor Pointer Register */
  29     txcfg=0x24,             /* Transmit Configuration Register */
  30     rxdp=0x30,              /* Receive Descriptor Pointer Register */
  31     rxcfg=0x34,             /* Receive Configuration Register */
  32     flctrl=0x38,            /* Flow Control Register */
  33     rxlen=0x3c,             /* Receive Packet Length Register */
  34     rfcr=0x48,              /* Receive Filter Control Register */
  35     rfdr=0x4C,              /* Receive Filter Data Register */
  36     pmctrl=0xB0,            /* Power Management Control Register */
  37     pmer=0xB4               /* Power Management Wake-up Event Register */
  38 };
  39
  40 /* Symbolic names for bits in various registers */
  41 enum sis900_command_register_bits {
  42     RESET   = 0x00000100,
  43     SWI     = 0x00000080,
  44     RxRESET = 0x00000020,
  45     TxRESET = 0x00000010,
  46     RxDIS   = 0x00000008,
  47     RxENA   = 0x00000004,
  48     TxDIS   = 0x00000002,
  49     TxENA   = 0x00000001
  50 };
  51
  52 enum sis900_configuration_register_bits {
  53     DESCRFMT = 0x00000100, /* 7016 specific */
  54     REQALG   = 0x00000080,
  55     SB       = 0x00000040,
  56     POW      = 0x00000020,
  57     EXD      = 0x00000010,
  58     PESEL    = 0x00000008,
  59     LPM      = 0x00000004,
  60     BEM      = 0x00000001
  61 };
  62
  63 enum sis900_eeprom_access_reigster_bits {
  64     MDC   = 0x00000040,
  65     MDDIR = 0x00000020,
  66     MDIO  = 0x00000010, /* 7016 specific */
  67     EECS  = 0x00000008,
  68     EECLK = 0x00000004,
  69     EEDO  = 0x00000002,
  70     EEDI  = 0x00000001
  71 };
  72
  73 enum sis900_interrupt_register_bits {
  74     WKEVT      = 0x10000000,
  75     TxPAUSEEND = 0x08000000,
  76     TxPAUSE    = 0x04000000,
  77     TxRCMP     = 0x02000000,
  78     RxRCMP     = 0x01000000,
  79     DPERR      = 0x00800000,
  80     SSERR      = 0x00400000,
  81     RMABT      = 0x00200000,
  82     RTABT      = 0x00100000,
  83     RxSOVR     = 0x00010000,
  84     HIBERR     = 0x00008000,
  85     SWINT      = 0x00001000,
  86     MIBINT     = 0x00000800,
  87     TxURN      = 0x00000400,
  88     TxIDLE     = 0x00000200,
  89     TxERR      = 0x00000100,
  90     TxDESC     = 0x00000080,
  91     TxOK       = 0x00000040,
  92     RxORN      = 0x00000020,
  93     RxIDLE     = 0x00000010,
  94     RxEARLY    = 0x00000008,
  95     RxERR      = 0x00000004,
  96     RxDESC     = 0x00000002,
  97     RxOK       = 0x00000001
  98 };
  99
 100 enum sis900_interrupt_enable_reigster_bits {
 101     IE = 0x00000001
 102 };
 103
 104 /* maximum dma burst fro transmission and receive*/
 105 #define MAX_DMA_RANGE   7       /* actually 0 means MAXIMUM !! */
 106 #define TxMXDMA_shift   20
 107 #define RxMXDMA_shift   20
 108 #define TX_DMA_BURST    0
 109 #define RX_DMA_BURST    0
 110
 111 /* transmit FIFO threshholds */
 112 #define TX_FILL_THRESH  16      /* 1/4 FIFO size */
 113 #define TxFILLT_shift   8
 114 #define TxDRNT_shift    0
 115 #define TxDRNT_100      48      /* 3/4 FIFO size */
 116 #define TxDRNT_10       16      /* 1/2 FIFO size */
 117
 118 enum sis900_transmit_config_register_bits {
 119     TxCSI   = 0x80000000,
 120     TxHBI   = 0x40000000,
 121     TxMLB   = 0x20000000,
 122     TxATP   = 0x10000000,
 123     TxIFG   = 0x0C000000,
 124     TxFILLT = 0x00003F00,
 125     TxDRNT  = 0x0000003F
 126 };
 127
 128 /* recevie FIFO thresholds */
 129 #define RxDRNT_shift     1
 130 #define RxDRNT_100      16      /* 1/2 FIFO size */
 131 #define RxDRNT_10       24      /* 3/4 FIFO size */
 132
 133 enum sis900_reveive_config_register_bits {
 134     RxAEP  = 0x80000000,
 135     RxARP  = 0x40000000,
 136     RxATX  = 0x10000000,
 137     RxAJAB = 0x08000000,
 138     RxDRNT = 0x0000007F
 139 };
 140
 141 #define RFAA_shift      28
 142 #define RFADDR_shift    16
 143
 144 enum sis900_receive_filter_control_register_bits {
 145     RFEN  = 0x80000000,
 146     RFAAB = 0x40000000,
 147     RFAAM = 0x20000000,
 148     RFAAP = 0x10000000,
 149     RFPromiscuous = (RFAAB|RFAAM|RFAAP)
 150 };
 151
 152 enum sis900_reveive_filter_data_mask {
 153     RFDAT =  0x0000FFFF
 154 };
 155
 156 /* EEPROM Addresses */
 157 enum sis900_eeprom_address {
 158     EEPROMSignature = 0x00,
 159     EEPROMVendorID  = 0x02,
 160     EEPROMDeviceID  = 0x03,
 161     EEPROMMACAddr   = 0x08,
 162     EEPROMChecksum  = 0x0b
 163 };
 164
 165 /* The EEPROM commands include the alway-set leading bit. Refer to NM93Cxx datasheet */
 166 enum sis900_eeprom_command {
 167     EEread          = 0x0180,
 168     EEwrite         = 0x0140,
 169     EEerase         = 0x01C0,
 170     EEwriteEnable   = 0x0130,
 171     EEwriteDisable  = 0x0100,
 172     EEeraseAll      = 0x0120,
 173     EEwriteAll      = 0x0110,
 174     EEaddrMask      = 0x013F,
 175 };
 176
 177 /* Manamgement Data I/O (mdio) frame */
 178 #define MIIread         0x6000
 179 #define MIIwrite        0x5002
 180 #define MIIpmdShift     7
 181 #define MIIregShift     2
 182 #define MIIcmdLen       16
 183 #define MIIcmdShift     16
 184
 185 /* Buffer Descriptor Status*/
 186 enum sis900_buffer_status {
 187     OWN    = 0x80000000,
 188     MORE   = 0x40000000,
 189     INTR   = 0x20000000,
 190     SUPCRC = 0x10000000,
 191     INCCRC = 0x10000000,
 192     OK     = 0x08000000,
 193     DSIZE  = 0x00000FFF
 194 };
 195
 196 /* Status for TX Buffers */
 197 enum sis900_tx_buffer_status {
 198     ABORT      = 0x04000000,
 199     UNDERRUN   = 0x02000000,
 200     NOCARRIER  = 0x01000000,
 201     DEFERD     = 0x00800000,
 202     EXCDEFER   = 0x00400000,
 203     OWCOLL     = 0x00200000,
 204     EXCCOLL    = 0x00100000,
 205     COLCNT     = 0x000F0000
 206 };
 207
 208 enum sis900_rx_bufer_status {
 209     OVERRUN    = 0x02000000,
 210     DEST       = 0x00800000,
 211     BCAST      = 0x01800000,
 212     MCAST      = 0x01000000,
 213     UNIMATCH   = 0x00800000,
 214     TOOLONG    = 0x00400000,
 215     RUNT       = 0x00200000,
 216     RXISERR    = 0x00100000,
 217     CRCERR     = 0x00080000,
 218     FAERR      = 0x00040000,
 219     LOOPBK     = 0x00020000,
 220     RXCOL      = 0x00010000
 221 };
 222
 223 /* MII register offsets */
 224 enum mii_registers {
 225     MII_CONTROL = 0x0000,
 226     MII_STATUS  = 0x0001,
 227     MII_PHY_ID0 = 0x0002,
 228     MII_PHY_ID1 = 0x0003,
 229     MII_ANADV   = 0x0004,
 230     MII_ANLPAR  = 0x0005,
 231     MII_ANEXT   = 0x0006
 232 };
 233
 234 /* mii registers specific to SiS 900 */
 235 enum sis_mii_registers {
 236     MII_CONFIG1 = 0x0010,
 237     MII_CONFIG2 = 0x0011,
 238     MII_STSOUT  = 0x0012,
 239     MII_MASK    = 0x0013
 240 };
 241
 242 /* mii registers specific to AMD 79C901 */
 243 enum amd_mii_registers {
 244     MII_STATUS_SUMMARY = 0x0018
 245 };
 246
 247 /* mii registers specific to ICS 1893 */
 248 enum ics_mii_registers {
 249         MII_EXTCTRL  = 0x0010, MII_QPDSTS = 0x0011, MII_10BTOP = 0x0012,
 250         MII_EXTCTRL2 = 0x0013
 251 };
 252
 253
 254
 255 /* MII Control register bit definitions. */
 256 enum mii_control_register_bits {
 257     MII_CNTL_FDX      = 0x0100,
 258     MII_CNTL_RST_AUTO = 0x0200,
 259     MII_CNTL_ISOLATE  = 0x0400,
 260     MII_CNTL_PWRDWN   = 0x0800,
 261     MII_CNTL_AUTO     = 0x1000,
 262     MII_CNTL_SPEED    = 0x2000,
 263     MII_CNTL_LPBK     = 0x4000,
 264     MII_CNTL_RESET    = 0x8000
 265 };
 266
 267 /* MII Status register bit  */
 268 enum mii_status_register_bits {
 269     MII_STAT_EXT        = 0x0001,
 270     MII_STAT_JAB        = 0x0002,
 271     MII_STAT_LINK       = 0x0004,
 272     MII_STAT_CAN_AUTO   = 0x0008,
 273     MII_STAT_FAULT      = 0x0010,
 274     MII_STAT_AUTO_DONE  = 0x0020,
 275     MII_STAT_CAN_T      = 0x0800,
 276     MII_STAT_CAN_T_FDX  = 0x1000,
 277     MII_STAT_CAN_TX     = 0x2000,
 278     MII_STAT_CAN_TX_FDX = 0x4000,
 279     MII_STAT_CAN_T4     = 0x8000
 280 };
 281
 282 #define         MII_ID1_OUI_LO          0xFC00  /* low bits of OUI mask */
 283 #define         MII_ID1_MODEL           0x03F0  /* model number */
 284 #define         MII_ID1_REV             0x000F  /* model number */
 285
 286 /* MII NWAY Register Bits ...
 287    valid for the ANAR (Auto-Negotiation Advertisement) and
 288    ANLPAR (Auto-Negotiation Link Partner) registers */
 289 enum mii_nway_register_bits {
 290     MII_NWAY_NODE_SEL = 0x001f,
 291     MII_NWAY_CSMA_CD  = 0x0001,
 292     MII_NWAY_T        = 0x0020,
 293     MII_NWAY_T_FDX    = 0x0040,
 294     MII_NWAY_TX       = 0x0080,
 295     MII_NWAY_TX_FDX   = 0x0100,
 296     MII_NWAY_T4       = 0x0200,
 297     MII_NWAY_PAUSE    = 0x0400,
 298     MII_NWAY_RF       = 0x2000,
 299     MII_NWAY_ACK      = 0x4000,
 300     MII_NWAY_NP       = 0x8000
 301 };
 302
 303 enum mii_stsout_register_bits {
 304     MII_STSOUT_LINK_FAIL = 0x4000,
 305     MII_STSOUT_SPD       = 0x0080,
 306     MII_STSOUT_DPLX      = 0x0040
 307 };
 308
 309 enum mii_stsics_register_bits {
 310         MII_STSICS_SPD  = 0x8000, MII_STSICS_DPLX = 0x4000,
 311         MII_STSICS_LINKSTS = 0x0001
 312 };
 313
 314 enum mii_stssum_register_bits {
 315     MII_STSSUM_LINK = 0x0008,
 316     MII_STSSUM_DPLX = 0x0004,
 317     MII_STSSUM_AUTO = 0x0002,
 318     MII_STSSUM_SPD  = 0x0001
 319 };
 320
 321 enum sis900_revision_id {
 322         SIS630A_900_REV = 0x80,         SIS630E_900_REV = 0x81,
 323         SIS630S_900_REV = 0x82,         SIS630EA1_900_REV = 0x83
 324 };
 325
 326 enum sis630_revision_id {
 327         SIS630A0    = 0x00, SIS630A1      = 0x01,
 328         SIS630B0    = 0x10, SIS630B1      = 0x11
 329 };
 330
 331 #define FDX_CAPABLE_DUPLEX_UNKNOWN      0
 332 #define FDX_CAPABLE_HALF_SELECTED       1
 333 #define FDX_CAPABLE_FULL_SELECTED       2
 334
 335 #define HW_SPEED_UNCONFIG               0
 336 #define HW_SPEED_HOME                   1
 337 #define HW_SPEED_10_MBPS                10
 338 #define HW_SPEED_100_MBPS               100
 339 #define HW_SPEED_DEFAULT                (HW_SPEED_100_MBPS)
 340
 341 #define CRC_SIZE        4
 342 #define MAC_HEADER_SIZE 14
 343
 344 #define TX_BUF_SIZE     1536
 345 #define RX_BUF_SIZE     1536
 346
 347 #define NUM_RX_DESC     4              /* Number of Rx descriptor registers. */
 348
 349 typedef unsigned char  u8;
 350 typedef   signed char  s8;
 351 typedef unsigned short u16;
 352 typedef   signed short s16;
 353 typedef unsigned int   u32;
 354 typedef   signed int   s32;
 355
 356 /* Time in ticks before concluding the transmitter is hung. */
 357 #define TX_TIMEOUT       (4*TICKS_PER_SEC)
 358
 359 typedef struct _BufferDesc {
 360     u32              link;
 361     volatile u32     cmdsts;
 362     u32              bufptr;
 363 } BufferDesc;