drivers/atm/firestream.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* drivers/atm/firestream.h - FireStream 155 (MB86697) and
   3  *                            FireStream  50 (MB86695) device driver
   4  */
   5
   6 /* Written & (C) 2000 by R.E.Wolff@BitWizard.nl
   7  * Copied snippets from zatm.c by Werner Almesberger, EPFL LRC/ICA
   8  * and ambassador.c Copyright (C) 1995-1999  Madge Networks Ltd
   9  */
  10
  11 /*
  12 */
  13
  14
  15 /***********************************************************************
  16  *                  first the defines for the chip.                    *
  17  ***********************************************************************/
  18
  19
  20 /********************* General chip parameters. ************************/
  21
  22 #define FS_NR_FREE_POOLS   8
  23 #define FS_NR_RX_QUEUES    4
  24
  25
  26 /********************* queues and queue access macros ******************/
  27
  28
  29 /* A queue entry. */
  30 struct FS_QENTRY {
  31         u32 cmd;
  32         u32 p0, p1, p2;
  33 };
  34
  35
  36 /* A freepool entry. */
  37 struct FS_BPENTRY {
  38         u32 flags;
  39         u32 next;
  40         u32 bsa;
  41         u32 aal_bufsize;
  42
  43         /* The hardware doesn't look at this, but we need the SKB somewhere... */
  44         struct sk_buff *skb;
  45         struct freepool *fp;
  46         struct fs_dev *dev;
  47 };
  48
  49
  50 #define STATUS_CODE(qe)  ((qe->cmd >> 22) & 0x3f)
  51
  52
  53 /* OFFSETS against the base of a QUEUE... */
  54 #define QSA     0x00
  55 #define QEA     0x04
  56 #define QRP     0x08
  57 #define QWP     0x0c
  58 #define QCNF    0x10   /* Only for Release queues! */
  59 /* Not for the transmit pending queue. */
  60
  61
  62 /* OFFSETS against the base of a FREE POOL... */
  63 #define FPCNF   0x00
  64 #define FPSA    0x04
  65 #define FPEA    0x08
  66 #define FPCNT   0x0c
  67 #define FPCTU   0x10
  68
  69 #define Q_SA(b)     (b + QSA )
  70 #define Q_EA(b)     (b + QEA )
  71 #define Q_RP(b)     (b + QRP )
  72 #define Q_WP(b)     (b + QWP )
  73 #define Q_CNF(b)    (b + QCNF)
  74
  75 #define FP_CNF(b)   (b + FPCNF)
  76 #define FP_SA(b)    (b + FPSA)
  77 #define FP_EA(b)    (b + FPEA)
  78 #define FP_CNT(b)   (b + FPCNT)
  79 #define FP_CTU(b)   (b + FPCTU)
  80
  81 /* bits in a queue register. */
  82 #define Q_FULL      0x1
  83 #define Q_EMPTY     0x2
  84 #define Q_INCWRAP   0x4
  85 #define Q_ADDR_MASK 0xfffffff0
  86
  87 /* bits in a FreePool config register */
  88 #define RBFP_RBS    (0x1 << 16)
  89 #define RBFP_RBSVAL (0x1 << 15)
  90 #define RBFP_CME    (0x1 << 12)
  91 #define RBFP_DLP    (0x1 << 11)
  92 #define RBFP_BFPWT  (0x1 <<  0)
  93
  94
  95
  96
  97 /* FireStream commands. */
  98 #define QE_CMD_NULL             (0x00 << 22)
  99 #define QE_CMD_REG_RD           (0x01 << 22)
 100 #define QE_CMD_REG_RDM          (0x02 << 22)
 101 #define QE_CMD_REG_WR           (0x03 << 22)
 102 #define QE_CMD_REG_WRM          (0x04 << 22)
 103 #define QE_CMD_CONFIG_TX        (0x05 << 22)
 104 #define QE_CMD_CONFIG_RX        (0x06 << 22)
 105 #define QE_CMD_PRP_RD           (0x07 << 22)
 106 #define QE_CMD_PRP_RDM          (0x2a << 22)
 107 #define QE_CMD_PRP_WR           (0x09 << 22)
 108 #define QE_CMD_PRP_WRM          (0x2b << 22)
 109 #define QE_CMD_RX_EN            (0x0a << 22)
 110 #define QE_CMD_RX_PURGE         (0x0b << 22)
 111 #define QE_CMD_RX_PURGE_INH     (0x0c << 22)
 112 #define QE_CMD_TX_EN            (0x0d << 22)
 113 #define QE_CMD_TX_PURGE         (0x0e << 22)
 114 #define QE_CMD_TX_PURGE_INH     (0x0f << 22)
 115 #define QE_CMD_RST_CG           (0x10 << 22)
 116 #define QE_CMD_SET_CG           (0x11 << 22)
 117 #define QE_CMD_RST_CLP          (0x12 << 22)
 118 #define QE_CMD_SET_CLP          (0x13 << 22)
 119 #define QE_CMD_OVERRIDE         (0x14 << 22)
 120 #define QE_CMD_ADD_BFP          (0x15 << 22)
 121 #define QE_CMD_DUMP_TX          (0x16 << 22)
 122 #define QE_CMD_DUMP_RX          (0x17 << 22)
 123 #define QE_CMD_LRAM_RD          (0x18 << 22)
 124 #define QE_CMD_LRAM_RDM         (0x28 << 22)
 125 #define QE_CMD_LRAM_WR          (0x19 << 22)
 126 #define QE_CMD_LRAM_WRM         (0x29 << 22)
 127 #define QE_CMD_LRAM_BSET        (0x1a << 22)
 128 #define QE_CMD_LRAM_BCLR        (0x1b << 22)
 129 #define QE_CMD_CONFIG_SEGM      (0x1c << 22)
 130 #define QE_CMD_READ_SEGM        (0x1d << 22)
 131 #define QE_CMD_CONFIG_ROUT      (0x1e << 22)
 132 #define QE_CMD_READ_ROUT        (0x1f << 22)
 133 #define QE_CMD_CONFIG_TM        (0x20 << 22)
 134 #define QE_CMD_READ_TM          (0x21 << 22)
 135 #define QE_CMD_CONFIG_TXBM      (0x22 << 22)
 136 #define QE_CMD_READ_TXBM        (0x23 << 22)
 137 #define QE_CMD_CONFIG_RXBM      (0x24 << 22)
 138 #define QE_CMD_READ_RXBM        (0x25 << 22)
 139 #define QE_CMD_CONFIG_REAS      (0x26 << 22)
 140 #define QE_CMD_READ_REAS        (0x27 << 22)
 141
 142 #define QE_TRANSMIT_DE          (0x0 << 30)
 143 #define QE_CMD_LINKED           (0x1 << 30)
 144 #define QE_CMD_IMM              (0x2 << 30)
 145 #define QE_CMD_IMM_INQ          (0x3 << 30)
 146
 147 #define TD_EPI                  (0x1 << 27)
 148 #define TD_COMMAND              (0x1 << 28)
 149
 150 #define TD_DATA                 (0x0 << 29)
 151 #define TD_RM_CELL              (0x1 << 29)
 152 #define TD_OAM_CELL             (0x2 << 29)
 153 #define TD_OAM_CELL_SEGMENT     (0x3 << 29)
 154
 155 #define TD_BPI                  (0x1 << 20)
 156
 157 #define FP_FLAGS_EPI            (0x1 << 27)
 158
 159
 160 #define TX_PQ(i)  (0x00  + (i) * 0x10)
 161 #define TXB_RQ    (0x20)
 162 #define ST_Q      (0x48)
 163 #define RXB_FP(i) (0x90  + (i) * 0x14)
 164 #define RXB_RQ(i) (0x134 + (i) * 0x14)
 165
 166
 167 #define TXQ_HP 0
 168 #define TXQ_LP 1
 169
 170 /* Phew. You don't want to know how many revisions these simple queue
 171  * address macros went through before I got them nice and compact as
 172  * they are now. -- REW
 173  */
 174
 175
 176 /* And now for something completely different:
 177  * The rest of the registers... */
 178
 179
 180 #define CMDR0 0x34
 181 #define CMDR1 0x38
 182 #define CMDR2 0x3c
 183 #define CMDR3 0x40
 184
 185
 186 #define SARMODE0     0x5c
 187
 188 #define SARMODE0_TXVCS_0    (0x0 << 0)
 189 #define SARMODE0_TXVCS_1k   (0x1 << 0)
 190 #define SARMODE0_TXVCS_2k   (0x2 << 0)
 191 #define SARMODE0_TXVCS_4k   (0x3 << 0)
 192 #define SARMODE0_TXVCS_8k   (0x4 << 0)
 193 #define SARMODE0_TXVCS_16k  (0x5 << 0)
 194 #define SARMODE0_TXVCS_32k  (0x6 << 0)
 195 #define SARMODE0_TXVCS_64k  (0x7 << 0)
 196 #define SARMODE0_TXVCS_32   (0x8 << 0)
 197
 198 #define SARMODE0_ABRVCS_0   (0x0 << 4)
 199 #define SARMODE0_ABRVCS_512 (0x1 << 4)
 200 #define SARMODE0_ABRVCS_1k  (0x2 << 4)
 201 #define SARMODE0_ABRVCS_2k  (0x3 << 4)
 202 #define SARMODE0_ABRVCS_4k  (0x4 << 4)
 203 #define SARMODE0_ABRVCS_8k  (0x5 << 4)
 204 #define SARMODE0_ABRVCS_16k (0x6 << 4)
 205 #define SARMODE0_ABRVCS_32k (0x7 << 4)
 206 #define SARMODE0_ABRVCS_32  (0x9 << 4) /* The others are "8", this one really has to
 207                                           be 9. Tell me you don't believe me. -- REW */
 208
 209 #define SARMODE0_RXVCS_0    (0x0 << 8)
 210 #define SARMODE0_RXVCS_1k   (0x1 << 8)
 211 #define SARMODE0_RXVCS_2k   (0x2 << 8)
 212 #define SARMODE0_RXVCS_4k   (0x3 << 8)
 213 #define SARMODE0_RXVCS_8k   (0x4 << 8)
 214 #define SARMODE0_RXVCS_16k  (0x5 << 8)
 215 #define SARMODE0_RXVCS_32k  (0x6 << 8)
 216 #define SARMODE0_RXVCS_64k  (0x7 << 8)
 217 #define SARMODE0_RXVCS_32   (0x8 << 8)
 218
 219 #define SARMODE0_CALSUP_1  (0x0 << 12)
 220 #define SARMODE0_CALSUP_2  (0x1 << 12)
 221 #define SARMODE0_CALSUP_3  (0x2 << 12)
 222 #define SARMODE0_CALSUP_4  (0x3 << 12)
 223
 224 #define SARMODE0_PRPWT_FS50_0  (0x0 << 14)
 225 #define SARMODE0_PRPWT_FS50_2  (0x1 << 14)
 226 #define SARMODE0_PRPWT_FS50_5  (0x2 << 14)
 227 #define SARMODE0_PRPWT_FS50_11 (0x3 << 14)
 228
 229 #define SARMODE0_PRPWT_FS155_0 (0x0 << 14)
 230 #define SARMODE0_PRPWT_FS155_1 (0x1 << 14)
 231 #define SARMODE0_PRPWT_FS155_2 (0x2 << 14)
 232 #define SARMODE0_PRPWT_FS155_3 (0x3 << 14)
 233
 234 #define SARMODE0_SRTS0     (0x1 << 23)
 235 #define SARMODE0_SRTS1     (0x1 << 24)
 236
 237 #define SARMODE0_RUN       (0x1 << 25)
 238
 239 #define SARMODE0_UNLOCK    (0x1 << 26)
 240 #define SARMODE0_CWRE      (0x1 << 27)
 241
 242
 243 #define SARMODE0_INTMODE_READCLEAR          (0x0 << 28)
 244 #define SARMODE0_INTMODE_READNOCLEAR        (0x1 << 28)
 245 #define SARMODE0_INTMODE_READNOCLEARINHIBIT (0x2 << 28)
 246 #define SARMODE0_INTMODE_READCLEARINHIBIT   (0x3 << 28)  /* Tell me you don't believe me. */
 247
 248 #define SARMODE0_GINT      (0x1 << 30)
 249 #define SARMODE0_SHADEN    (0x1 << 31)
 250
 251
 252 #define SARMODE1     0x60
 253
 254
 255 #define SARMODE1_TRTL_SHIFT 0   /* Program to 0 */
 256 #define SARMODE1_RRTL_SHIFT 4   /* Program to 0 */
 257
 258 #define SARMODE1_TAGM       (0x1 <<  8)  /* Program to 0 */
 259
 260 #define SARMODE1_HECM0      (0x1 <<  9)
 261 #define SARMODE1_HECM1      (0x1 << 10)
 262 #define SARMODE1_HECM2      (0x1 << 11)
 263
 264 #define SARMODE1_GFCE       (0x1 << 14)
 265 #define SARMODE1_GFCR       (0x1 << 15)
 266 #define SARMODE1_PMS        (0x1 << 18)
 267 #define SARMODE1_GPRI       (0x1 << 19)
 268 #define SARMODE1_GPAS       (0x1 << 20)
 269 #define SARMODE1_GVAS       (0x1 << 21)
 270 #define SARMODE1_GNAM       (0x1 << 22)
 271 #define SARMODE1_GPLEN      (0x1 << 23)
 272 #define SARMODE1_DUMPE      (0x1 << 24)
 273 #define SARMODE1_OAMCRC     (0x1 << 25)
 274 #define SARMODE1_DCOAM      (0x1 << 26)
 275 #define SARMODE1_DCRM       (0x1 << 27)
 276 #define SARMODE1_TSTLP      (0x1 << 28)
 277 #define SARMODE1_DEFHEC     (0x1 << 29)
 278
 279
 280 #define ISR      0x64
 281 #define IUSR     0x68
 282 #define IMR      0x6c
 283
 284 #define ISR_LPCO          (0x1 <<  0)
 285 #define ISR_DPCO          (0x1 <<  1)
 286 #define ISR_RBRQ0_W       (0x1 <<  2)
 287 #define ISR_RBRQ1_W       (0x1 <<  3)
 288 #define ISR_RBRQ2_W       (0x1 <<  4)
 289 #define ISR_RBRQ3_W       (0x1 <<  5)
 290 #define ISR_RBRQ0_NF      (0x1 <<  6)
 291 #define ISR_RBRQ1_NF      (0x1 <<  7)
 292 #define ISR_RBRQ2_NF      (0x1 <<  8)
 293 #define ISR_RBRQ3_NF      (0x1 <<  9)
 294 #define ISR_BFP_SC        (0x1 << 10)
 295 #define ISR_INIT          (0x1 << 11)
 296 #define ISR_INIT_ERR      (0x1 << 12) /* Documented as "reserved" */
 297 #define ISR_USCEO         (0x1 << 13)
 298 #define ISR_UPEC0         (0x1 << 14)
 299 #define ISR_VPFCO         (0x1 << 15)
 300 #define ISR_CRCCO         (0x1 << 16)
 301 #define ISR_HECO          (0x1 << 17)
 302 #define ISR_TBRQ_W        (0x1 << 18)
 303 #define ISR_TBRQ_NF       (0x1 << 19)
 304 #define ISR_CTPQ_E        (0x1 << 20)
 305 #define ISR_GFC_C0        (0x1 << 21)
 306 #define ISR_PCI_FTL       (0x1 << 22)
 307 #define ISR_CSQ_W         (0x1 << 23)
 308 #define ISR_CSQ_NF        (0x1 << 24)
 309 #define ISR_EXT_INT       (0x1 << 25)
 310 #define ISR_RXDMA_S       (0x1 << 26)
 311
 312
 313 #define TMCONF 0x78
 314 /* Bits? */
 315
 316
 317 #define CALPRESCALE 0x7c
 318 /* Bits? */
 319
 320 #define CELLOSCONF 0x84
 321 #define CELLOSCONF_COTS   (0x1 << 28)
 322 #define CELLOSCONF_CEN    (0x1 << 27)
 323 #define CELLOSCONF_SC8    (0x3 << 24)
 324 #define CELLOSCONF_SC4    (0x2 << 24)
 325 #define CELLOSCONF_SC2    (0x1 << 24)
 326 #define CELLOSCONF_SC1    (0x0 << 24)
 327
 328 #define CELLOSCONF_COBS   (0x1 << 16)
 329 #define CELLOSCONF_COPK   (0x1 <<  8)
 330 #define CELLOSCONF_COST   (0x1 <<  0)
 331 /* Bits? */
 332
 333 #define RAS0 0x1bc
 334 #define RAS0_DCD_XHLT (0x1 << 31)
 335
 336 #define RAS0_VPSEL    (0x1 << 16)
 337 #define RAS0_VCSEL    (0x1 <<  0)
 338
 339 #define RAS1 0x1c0
 340 #define RAS1_UTREG    (0x1 << 5)
 341
 342
 343 #define DMAMR 0x1cc
 344 #define DMAMR_TX_MODE_FULL (0x0 << 0)
 345 #define DMAMR_TX_MODE_PART (0x1 << 0)
 346 #define DMAMR_TX_MODE_NONE (0x2 << 0) /* And 3 */
 347
 348
 349
 350 #define RAS2 0x280
 351
 352 #define RAS2_NNI  (0x1 << 0)
 353 #define RAS2_USEL (0x1 << 1)
 354 #define RAS2_UBS  (0x1 << 2)
 355
 356
 357
 358 struct fs_transmit_config {
 359         u32 flags;
 360         u32 atm_hdr;
 361         u32 TMC[4];
 362         u32 spec;
 363         u32 rtag[3];
 364 };
 365
 366 #define TC_FLAGS_AAL5      (0x0 << 29)
 367 #define TC_FLAGS_TRANSPARENT_PAYLOAD (0x1 << 29)
 368 #define TC_FLAGS_TRANSPARENT_CELL    (0x2 << 29)
 369 #define TC_FLAGS_STREAMING (0x1 << 28)
 370 #define TC_FLAGS_PACKET    (0x0)
 371 #define TC_FLAGS_TYPE_ABR  (0x0 << 22)
 372 #define TC_FLAGS_TYPE_CBR  (0x1 << 22)
 373 #define TC_FLAGS_TYPE_VBR  (0x2 << 22)
 374 #define TC_FLAGS_TYPE_UBR  (0x3 << 22)
 375 #define TC_FLAGS_CAL0      (0x0 << 20)
 376 #define TC_FLAGS_CAL1      (0x1 << 20)
 377 #define TC_FLAGS_CAL2      (0x2 << 20)
 378 #define TC_FLAGS_CAL3      (0x3 << 20)
 379
 380
 381 #define RC_FLAGS_NAM        (0x1 << 13)
 382 #define RC_FLAGS_RXBM_PSB   (0x0 << 14)
 383 #define RC_FLAGS_RXBM_CIF   (0x1 << 14)
 384 #define RC_FLAGS_RXBM_PMB   (0x2 << 14)
 385 #define RC_FLAGS_RXBM_STR   (0x4 << 14)
 386 #define RC_FLAGS_RXBM_SAF   (0x6 << 14)
 387 #define RC_FLAGS_RXBM_POS   (0x6 << 14)
 388 #define RC_FLAGS_BFPS       (0x1 << 17)
 389
 390 #define RC_FLAGS_BFPS_BFP   (0x1 << 17)
 391
 392 #define RC_FLAGS_BFPS_BFP0  (0x0 << 17)
 393 #define RC_FLAGS_BFPS_BFP1  (0x1 << 17)
 394 #define RC_FLAGS_BFPS_BFP2  (0x2 << 17)
 395 #define RC_FLAGS_BFPS_BFP3  (0x3 << 17)
 396 #define RC_FLAGS_BFPS_BFP4  (0x4 << 17)
 397 #define RC_FLAGS_BFPS_BFP5  (0x5 << 17)
 398 #define RC_FLAGS_BFPS_BFP6  (0x6 << 17)
 399 #define RC_FLAGS_BFPS_BFP7  (0x7 << 17)
 400 #define RC_FLAGS_BFPS_BFP01 (0x8 << 17)
 401 #define RC_FLAGS_BFPS_BFP23 (0x9 << 17)
 402 #define RC_FLAGS_BFPS_BFP45 (0xa << 17)
 403 #define RC_FLAGS_BFPS_BFP67 (0xb << 17)
 404 #define RC_FLAGS_BFPS_BFP07 (0xc << 17)
 405 #define RC_FLAGS_BFPS_BFP27 (0xd << 17)
 406 #define RC_FLAGS_BFPS_BFP47 (0xe << 17)
 407
 408 #define RC_FLAGS_BFPP       (0x1 << 21)
 409 #define RC_FLAGS_TEVC       (0x1 << 22)
 410 #define RC_FLAGS_TEP        (0x1 << 23)
 411 #define RC_FLAGS_AAL5       (0x0 << 24)
 412 #define RC_FLAGS_TRANSP     (0x1 << 24)
 413 #define RC_FLAGS_TRANSC     (0x2 << 24)
 414 #define RC_FLAGS_ML         (0x1 << 27)
 415 #define RC_FLAGS_TRBRM      (0x1 << 28)
 416 #define RC_FLAGS_PRI        (0x1 << 29)
 417 #define RC_FLAGS_HOAM       (0x1 << 30)
 418 #define RC_FLAGS_CRC10      (0x1 << 31)
 419
 420
 421 #define RAC 0x1c8
 422 #define RAM 0x1c4
 423
 424
 425
 426 /************************************************************************
 427  *         Then the datastructures that the DRIVER uses.                *
 428  ************************************************************************/
 429
 430 #define TXQ_NENTRIES  32
 431 #define RXRQ_NENTRIES 1024
 432
 433
 434 struct fs_vcc {
 435         int channo;
 436         wait_queue_head_t close_wait;
 437         struct sk_buff *last_skb;
 438 };
 439
 440
 441 struct queue {
 442         struct FS_QENTRY *sa, *ea;
 443         int offset;
 444 };
 445
 446 struct freepool {
 447         int offset;
 448         int bufsize;
 449         int nr_buffers;
 450         int n;
 451 };
 452
 453
 454 struct fs_dev {
 455         struct fs_dev *next;            /* other FS devices */
 456         int flags;
 457
 458         unsigned char irq;              /* IRQ */
 459         struct pci_dev *pci_dev;        /* PCI stuff */
 460         struct atm_dev *atm_dev;
 461         struct timer_list timer;
 462
 463         unsigned long hw_base;          /* mem base address */
 464         void __iomem *base;             /* Mapping of base address */
 465         int channo;
 466         unsigned long channel_mask;
 467
 468         struct queue    hp_txq, lp_txq, tx_relq, st_q;
 469         struct freepool rx_fp[FS_NR_FREE_POOLS];
 470         struct queue    rx_rq[FS_NR_RX_QUEUES];
 471
 472         int nchannels;
 473         struct atm_vcc **atm_vccs;
 474         void *tx_inuse;
 475         int ntxpckts;
 476 };
 477
 478
 479
 480
 481 /* Number of channesl that the FS50 supports. */
 482 #define FS50_CHANNEL_BITS  5
 483 #define FS50_NR_CHANNELS      (1 << FS50_CHANNEL_BITS)
 484
 485
 486 #define FS_DEV(atm_dev) ((struct fs_dev *) (atm_dev)->dev_data)
 487 #define FS_VCC(atm_vcc) ((struct fs_vcc *) (atm_vcc)->dev_data)
 488
 489
 490 #define FS_IS50  0x1
 491 #define FS_IS155 0x2
 492
 493 #define IS_FS50(dev)  (dev->flags & FS_IS50)
 494 #define IS_FS155(dev) (dev->flags & FS_IS155)
 495
 496 /* Within limits this is user-configurable. */
 497 /* Note: Currently the sum (10 -> 1k channels) is hardcoded in the driver. */
 498 #define FS155_VPI_BITS 4
 499 #define FS155_VCI_BITS 6
 500
 501 #define FS155_CHANNEL_BITS  (FS155_VPI_BITS + FS155_VCI_BITS)
 502 #define FS155_NR_CHANNELS   (1 << FS155_CHANNEL_BITS)