arch/common/boot/grub/netboot/3c595.h

   1 /*
   2  * Copyright (c) 1993 Herb Peyerl (hpeyerl@novatel.ca) All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met: 1. Redistributions of source code must retain the above copyright
   7  * notice, this list of conditions and the following disclaimer. 2. The name
   8  * of the author may not be used to endorse or promote products derived from
   9  * this software without specific prior written permission
  10  *
  11  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  12  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  14  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  15  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  16  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  17  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  18  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  19  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  20  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  21  *
  22  October 2, 1994
  23
  24  Modified by: Andres Vega Garcia
  25
  26  INRIA - Sophia Antipolis, France
  27  e-mail: avega@sophia.inria.fr
  28  finger: avega@pax.inria.fr
  29
  30  */
  31
  32 /*
  33  * Created from if_epreg.h by Fred Gray (fgray@rice.edu) to support the
  34  * 3c590 family.
  35  */
  36
  37 /*
  38  * Modified by Shusuke Nisiyama <shu@athena.qe.eng.hokudai.ac.jp>
  39  * for etherboot
  40  * Mar. 14, 2000
  41 */
  42
  43 /*
  44  * Ethernet software status per interface.
  45  */
  46
  47 /*
  48  * Some global constants
  49  */
  50
  51 #define TX_INIT_RATE         16
  52 #define TX_INIT_MAX_RATE     64
  53 #define RX_INIT_LATENCY      64
  54 #define RX_INIT_EARLY_THRESH 64
  55 #define MIN_RX_EARLY_THRESHF   16 /* not less than ether_header */
  56 #define MIN_RX_EARLY_THRESHL   4
  57
  58 #define EEPROMSIZE      0x40
  59 #define MAX_EEPROMBUSY  1000
  60 #define VX_LAST_TAG     0xd7
  61 #define VX_MAX_BOARDS   16
  62 #define VX_ID_PORT      0x100
  63
  64 /*
  65  * some macros to acces long named fields
  66  */
  67 #define BASE    (eth_nic_base)
  68
  69 /*
  70  * Commands to read/write EEPROM trough EEPROM command register (Window 0,
  71  * Offset 0xa)
  72  */
  73 #define EEPROM_CMD_RD    0x0080 /* Read:  Address required (5 bits) */
  74 #define EEPROM_CMD_WR    0x0040 /* Write: Address required (5 bits) */
  75 #define EEPROM_CMD_ERASE 0x00c0 /* Erase: Address required (5 bits) */
  76 #define EEPROM_CMD_EWEN  0x0030 /* Erase/Write Enable: No data required */
  77
  78 #define EEPROM_BUSY             (1<<15)
  79
  80 /*
  81  * Some short functions, worth to let them be a macro
  82  */
  83
  84 /**************************************************************************
  85  *                                                                        *
  86  * These define the EEPROM data structure.  They are used in the probe
  87  * function to verify the existence of the adapter after having sent
  88  * the ID_Sequence.
  89  *
  90  * There are others but only the ones we use are defined here.
  91  *
  92  **************************************************************************/
  93
  94 #define EEPROM_NODE_ADDR_0      0x0     /* Word */
  95 #define EEPROM_NODE_ADDR_1      0x1     /* Word */
  96 #define EEPROM_NODE_ADDR_2      0x2     /* Word */
  97 #define EEPROM_PROD_ID          0x3     /* 0x9[0-f]50 */
  98 #define EEPROM_MFG_ID           0x7     /* 0x6d50 */
  99 #define EEPROM_ADDR_CFG         0x8     /* Base addr */
 100 #define EEPROM_RESOURCE_CFG     0x9     /* IRQ. Bits 12-15 */
 101 #define EEPROM_OEM_ADDR_0       0xa     /* Word */
 102 #define EEPROM_OEM_ADDR_1       0xb     /* Word */
 103 #define EEPROM_OEM_ADDR_2       0xc     /* Word */
 104 #define EEPROM_SOFT_INFO_2      0xf     /* Software information 2 */
 105
 106 #define NO_RX_OVN_ANOMALY       (1<<5)
 107
 108 /**************************************************************************
 109  *                                                                                *
 110  * These are the registers for the 3Com 3c509 and their bit patterns when *
 111  * applicable.  They have been taken out the the "EtherLink III Parallel  *
 112  * Tasking EISA and ISA Technical Reference" "Beta Draft 10/30/92" manual *
 113  * from 3com.                                                             *
 114  *                                                                                *
 115  **************************************************************************/
 116
 117 #define VX_COMMAND              0x0e    /* Write. BASE+0x0e is always a
 118                                          * command reg. */
 119 #define VX_STATUS               0x0e    /* Read. BASE+0x0e is always status
 120                                          * reg. */
 121 #define VX_WINDOW               0x0f    /* Read. BASE+0x0f is always window
 122                                          * reg. */
 123 /*
 124  * Window 0 registers. Setup.
 125  */
 126 /* Write */
 127 #define VX_W0_EEPROM_DATA       0x0c
 128 #define VX_W0_EEPROM_COMMAND    0x0a
 129 #define VX_W0_RESOURCE_CFG      0x08
 130 #define VX_W0_ADDRESS_CFG       0x06
 131 #define VX_W0_CONFIG_CTRL       0x04
 132         /* Read */
 133 #define VX_W0_PRODUCT_ID        0x02
 134 #define VX_W0_MFG_ID            0x00
 135
 136
 137 /*
 138  * Window 1 registers. Operating Set.
 139  */
 140 /* Write */
 141 #define VX_W1_TX_PIO_WR_2       0x02
 142 #define VX_W1_TX_PIO_WR_1       0x00
 143 /* Read */
 144 #define VX_W1_FREE_TX           0x0c
 145 #define VX_W1_TX_STATUS         0x0b    /* byte */
 146 #define VX_W1_TIMER             0x0a    /* byte */
 147 #define VX_W1_RX_STATUS         0x08
 148 #define VX_W1_RX_PIO_RD_2       0x02
 149 #define VX_W1_RX_PIO_RD_1       0x00
 150
 151 /*
 152  * Window 2 registers. Station Address Setup/Read
 153  */
 154 /* Read/Write */
 155 #define VX_W2_ADDR_5            0x05
 156 #define VX_W2_ADDR_4            0x04
 157 #define VX_W2_ADDR_3            0x03
 158 #define VX_W2_ADDR_2            0x02
 159 #define VX_W2_ADDR_1            0x01
 160 #define VX_W2_ADDR_0            0x00
 161
 162 /*
 163  * Window 3 registers. FIFO Management.
 164  */
 165 /* Read */
 166 #define VX_W3_INTERNAL_CFG      0x00
 167 #define VX_W3_RESET_OPT         0x08
 168 #define VX_W3_FREE_TX           0x0c
 169 #define VX_W3_FREE_RX           0x0a
 170
 171 /*
 172  * Window 4 registers. Diagnostics.
 173  */
 174 /* Read/Write */
 175 #define VX_W4_MEDIA_TYPE        0x0a
 176 #define VX_W4_CTRLR_STATUS      0x08
 177 #define VX_W4_NET_DIAG          0x06
 178 #define VX_W4_FIFO_DIAG         0x04
 179 #define VX_W4_HOST_DIAG         0x02
 180 #define VX_W4_TX_DIAG           0x00
 181
 182 /*
 183  * Window 5 Registers.  Results and Internal status.
 184  */
 185 /* Read */
 186 #define VX_W5_READ_0_MASK       0x0c
 187 #define VX_W5_INTR_MASK         0x0a
 188 #define VX_W5_RX_FILTER         0x08
 189 #define VX_W5_RX_EARLY_THRESH   0x06
 190 #define VX_W5_TX_AVAIL_THRESH   0x02
 191 #define VX_W5_TX_START_THRESH   0x00
 192
 193 /*
 194  * Window 6 registers. Statistics.
 195  */
 196 /* Read/Write */
 197 #define TX_TOTAL_OK             0x0c
 198 #define RX_TOTAL_OK             0x0a
 199 #define TX_DEFERRALS            0x08
 200 #define RX_FRAMES_OK            0x07
 201 #define TX_FRAMES_OK            0x06
 202 #define RX_OVERRUNS             0x05
 203 #define TX_COLLISIONS           0x04
 204 #define TX_AFTER_1_COLLISION    0x03
 205 #define TX_AFTER_X_COLLISIONS   0x02
 206 #define TX_NO_SQE               0x01
 207 #define TX_CD_LOST              0x00
 208
 209 /****************************************
 210  *
 211  * Register definitions.
 212  *
 213  ****************************************/
 214
 215 /*
 216  * Command register. All windows.
 217  *
 218  * 16 bit register.
 219  *     15-11:  5-bit code for command to be executed.
 220  *     10-0:   11-bit arg if any. For commands with no args;
 221  *            this can be set to anything.
 222  */
 223 #define GLOBAL_RESET            (unsigned short) 0x0000 /* Wait at least 1ms
 224                                                          * after issuing */
 225 #define WINDOW_SELECT           (unsigned short) (0x1<<11)
 226 #define START_TRANSCEIVER       (unsigned short) (0x2<<11)      /* Read ADDR_CFG reg to
 227                                                          * determine whether
 228                                                          * this is needed. If
 229                                                          * so; wait 800 uSec
 230                                                          * before using trans-
 231                                                          * ceiver. */
 232 #define RX_DISABLE              (unsigned short) (0x3<<11)      /* state disabled on
 233                                                          * power-up */
 234 #define RX_ENABLE               (unsigned short) (0x4<<11)
 235 #define RX_RESET                (unsigned short) (0x5<<11)
 236 #define RX_DISCARD_TOP_PACK     (unsigned short) (0x8<<11)
 237 #define TX_ENABLE               (unsigned short) (0x9<<11)
 238 #define TX_DISABLE              (unsigned short) (0xa<<11)
 239 #define TX_RESET                (unsigned short) (0xb<<11)
 240 #define REQ_INTR                (unsigned short) (0xc<<11)
 241 /*
 242  * The following C_* acknowledge the various interrupts. Some of them don't
 243  * do anything.  See the manual.
 244  */
 245 #define ACK_INTR                (unsigned short) (0x6800)
 246 #       define C_INTR_LATCH     (unsigned short) (ACK_INTR|0x1)
 247 #       define C_CARD_FAILURE   (unsigned short) (ACK_INTR|0x2)
 248 #       define C_TX_COMPLETE    (unsigned short) (ACK_INTR|0x4)
 249 #       define C_TX_AVAIL       (unsigned short) (ACK_INTR|0x8)
 250 #       define C_RX_COMPLETE    (unsigned short) (ACK_INTR|0x10)
 251 #       define C_RX_EARLY       (unsigned short) (ACK_INTR|0x20)
 252 #       define C_INT_RQD                (unsigned short) (ACK_INTR|0x40)
 253 #       define C_UPD_STATS      (unsigned short) (ACK_INTR|0x80)
 254 #define SET_INTR_MASK           (unsigned short) (0xe<<11)
 255 #define SET_RD_0_MASK           (unsigned short) (0xf<<11)
 256 #define SET_RX_FILTER           (unsigned short) (0x10<<11)
 257 #       define FIL_INDIVIDUAL   (unsigned short) (0x1)
 258 #       define FIL_MULTICAST     (unsigned short) (0x02)
 259 #       define FIL_BRDCST        (unsigned short) (0x04)
 260 #       define FIL_PROMISC       (unsigned short) (0x08)
 261 #define SET_RX_EARLY_THRESH     (unsigned short) (0x11<<11)
 262 #define SET_TX_AVAIL_THRESH     (unsigned short) (0x12<<11)
 263 #define SET_TX_START_THRESH     (unsigned short) (0x13<<11)
 264 #define STATS_ENABLE            (unsigned short) (0x15<<11)
 265 #define STATS_DISABLE           (unsigned short) (0x16<<11)
 266 #define STOP_TRANSCEIVER        (unsigned short) (0x17<<11)
 267
 268 /*
 269  * Status register. All windows.
 270  *
 271  *     15-13:  Window number(0-7).
 272  *     12:     Command_in_progress.
 273  *     11:     reserved.
 274  *     10:     reserved.
 275  *     9:      reserved.
 276  *     8:      reserved.
 277  *     7:      Update Statistics.
 278  *     6:      Interrupt Requested.
 279  *     5:      RX Early.
 280  *     4:      RX Complete.
 281  *     3:      TX Available.
 282  *     2:      TX Complete.
 283  *     1:      Adapter Failure.
 284  *     0:      Interrupt Latch.
 285  */
 286 #define S_INTR_LATCH            (unsigned short) (0x1)
 287 #define S_CARD_FAILURE          (unsigned short) (0x2)
 288 #define S_TX_COMPLETE           (unsigned short) (0x4)
 289 #define S_TX_AVAIL              (unsigned short) (0x8)
 290 #define S_RX_COMPLETE           (unsigned short) (0x10)
 291 #define S_RX_EARLY              (unsigned short) (0x20)
 292 #define S_INT_RQD               (unsigned short) (0x40)
 293 #define S_UPD_STATS             (unsigned short) (0x80)
 294 #define S_COMMAND_IN_PROGRESS   (unsigned short) (0x1000)
 295
 296 #define VX_BUSY_WAIT while (inw(BASE + VX_STATUS) & S_COMMAND_IN_PROGRESS)
 297
 298 /* Address Config. Register.
 299  * Window 0/Port 06
 300  */
 301
 302 #define ACF_CONNECTOR_BITS      14
 303 #define ACF_CONNECTOR_UTP       0
 304 #define ACF_CONNECTOR_AUI       1
 305 #define ACF_CONNECTOR_BNC       3
 306
 307 #define INTERNAL_CONNECTOR_BITS 20
 308 #define INTERNAL_CONNECTOR_MASK 0x01700000
 309
 310 /*
 311  * FIFO Registers. RX Status.
 312  *
 313  *     15:     Incomplete or FIFO empty.
 314  *     14:     1: Error in RX Packet   0: Incomplete or no error.
 315  *     13-11:  Type of error.
 316  *            1000 = Overrun.
 317  *            1011 = Run Packet Error.
 318  *            1100 = Alignment Error.
 319  *            1101 = CRC Error.
 320  *            1001 = Oversize Packet Error (>1514 bytes)
 321  *            0010 = Dribble Bits.
 322  *            (all other error codes, no errors.)
 323  *
 324  *     10-0:   RX Bytes (0-1514)
 325  */
 326 #define ERR_INCOMPLETE  (unsigned short) (0x8000)
 327 #define ERR_RX          (unsigned short) (0x4000)
 328 #define ERR_MASK        (unsigned short) (0x7800)
 329 #define ERR_OVERRUN     (unsigned short) (0x4000)
 330 #define ERR_RUNT        (unsigned short) (0x5800)
 331 #define ERR_ALIGNMENT   (unsigned short) (0x6000)
 332 #define ERR_CRC         (unsigned short) (0x6800)
 333 #define ERR_OVERSIZE    (unsigned short) (0x4800)
 334 #define ERR_DRIBBLE     (unsigned short) (0x1000)
 335
 336 /*
 337  * TX Status.
 338  *
 339  *   Reports the transmit status of a completed transmission. Writing this
 340  *   register pops the transmit completion stack.
 341  *
 342  *   Window 1/Port 0x0b.
 343  *
 344  *     7:      Complete
 345  *     6:      Interrupt on successful transmission requested.
 346  *     5:      Jabber Error (TP Only, TX Reset required. )
 347  *     4:      Underrun (TX Reset required. )
 348  *     3:      Maximum Collisions.
 349  *     2:      TX Status Overflow.
 350  *     1-0:    Undefined.
 351  *
 352  */
 353 #define TXS_COMPLETE            0x80
 354 #define TXS_INTR_REQ            0x40
 355 #define TXS_JABBER              0x20
 356 #define TXS_UNDERRUN            0x10
 357 #define TXS_MAX_COLLISION       0x8
 358 #define TXS_STATUS_OVERFLOW     0x4
 359
 360 #define RS_AUI                  (1<<5)
 361 #define RS_BNC                  (1<<4)
 362 #define RS_UTP                  (1<<3)
 363 #define RS_T4                   (1<<0)
 364 #define RS_TX                   (1<<1)
 365 #define RS_FX                   (1<<2)
 366 #define RS_MII                  (1<<6)
 367
 368
 369 /*
 370  * FIFO Status (Window 4)
 371  *
 372  *   Supports FIFO diagnostics
 373  *
 374  *   Window 4/Port 0x04.1
 375  *
 376  *     15:      1=RX receiving (RO). Set when a packet is being received
 377  *              into the RX FIFO.
 378  *     14:      Reserved
 379  *     13:      1=RX underrun (RO). Generates Adapter Failure interrupt.
 380  *              Requires RX Reset or Global Reset command to recover.
 381  *              It is generated when you read past the end of a packet -
 382  *              reading past what has been received so far will give bad
 383  *              data.
 384  *     12:      1=RX status overrun (RO). Set when there are already 8
 385  *              packets in the RX FIFO. While this bit is set, no additional
 386  *              packets are received. Requires no action on the part of
 387  *              the host. The condition is cleared once a packet has been
 388  *              read out of the RX FIFO.
 389  *     11:      1=RX overrun (RO). Set when the RX FIFO is full (there
 390  *              may not be an overrun packet yet). While this bit is set,
 391  *              no additional packets will be received (some additional
 392  *              bytes can still be pending between the wire and the RX
 393  *              FIFO). Requires no action on the part of the host. The
 394  *              condition is cleared once a few bytes have been read out
 395  *              from the RX FIFO.
 396  *     10:      1=TX overrun (RO). Generates adapter failure interrupt.
 397  *              Requires TX Reset or Global Reset command to recover.
 398  *              Disables Transmitter.
 399  *     9-8:     Unassigned.
 400  *     7-0:     Built in self test bits for the RX and TX FIFO's.
 401  */
 402 #define FIFOS_RX_RECEIVING      (unsigned short) 0x8000
 403 #define FIFOS_RX_UNDERRUN       (unsigned short) 0x2000
 404 #define FIFOS_RX_STATUS_OVERRUN (unsigned short) 0x1000
 405 #define FIFOS_RX_OVERRUN        (unsigned short) 0x0800
 406 #define FIFOS_TX_OVERRUN        (unsigned short) 0x0400
 407
 408 /*
 409  * Misc defines for various things.
 410  */
 411 #define TAG_ADAPTER                     0xd0
 412 #define ACTIVATE_ADAPTER_TO_CONFIG      0xff
 413 #define ENABLE_DRQ_IRQ                  0x0001
 414 #define MFG_ID                          0x506d  /* `TCM' */
 415 #define PROD_ID                         0x5090
 416 #define GO_WINDOW(x)            outw(WINDOW_SELECT|(x),BASE+VX_COMMAND)
 417 #define JABBER_GUARD_ENABLE     0x40
 418 #define LINKBEAT_ENABLE         0x80
 419 #define ENABLE_UTP              (JABBER_GUARD_ENABLE | LINKBEAT_ENABLE)
 420 #define DISABLE_UTP             0x0
 421 #define RX_BYTES_MASK           (unsigned short) (0x07ff)
 422 #define RX_ERROR        0x4000
 423 #define RX_INCOMPLETE   0x8000
 424 #define TX_INDICATE             1<<15
 425 #define is_eeprom_busy(b)       (inw((b)+VX_W0_EEPROM_COMMAND)&EEPROM_BUSY)
 426
 427 #define VX_IOSIZE       0x20
 428
 429 #define VX_CONNECTORS 8
 430
 431 /*
 432  * Local variables:
 433  *  c-basic-offset: 8
 434  * End:
 435  */