1 #ifndef _FORE200E_H 2 #define _FORE200E_H 3 4 #ifdef __KERNEL__ 5 6 /* rx buffer sizes */ 7 8 #define SMALL_BUFFER_SIZE 384 /* size of small buffers (multiple of 48 (PCA) and 64 (SBA) bytes) */ 9 #define LARGE_BUFFER_SIZE 4032 /* size of large buffers (multiple of 48 (PCA) and 64 (SBA) bytes) */ 10 11 12 #define RBD_BLK_SIZE 32 /* nbr of supplied rx buffers per rbd */ 13 14 15 #define MAX_PDU_SIZE 65535 /* maximum PDU size supported by AALs */ 16 17 18 #define BUFFER_S1_SIZE SMALL_BUFFER_SIZE /* size of small buffers, scheme 1 */ 19 #define BUFFER_L1_SIZE LARGE_BUFFER_SIZE /* size of large buffers, scheme 1 */ 20 21 #define BUFFER_S2_SIZE SMALL_BUFFER_SIZE /* size of small buffers, scheme 2 */ 22 #define BUFFER_L2_SIZE LARGE_BUFFER_SIZE /* size of large buffers, scheme 2 */ 23 24 #define BUFFER_S1_NBR (RBD_BLK_SIZE * 6) 25 #define BUFFER_L1_NBR (RBD_BLK_SIZE * 4) 26 27 #define BUFFER_S2_NBR (RBD_BLK_SIZE * 6) 28 #define BUFFER_L2_NBR (RBD_BLK_SIZE * 4) 29 30 31 #define QUEUE_SIZE_CMD 16 /* command queue capacity */ 32 #define QUEUE_SIZE_RX 64 /* receive queue capacity */ 33 #define QUEUE_SIZE_TX 256 /* transmit queue capacity */ 34 #define QUEUE_SIZE_BS 32 /* buffer supply queue capacity */ 35 36 #define FORE200E_VPI_BITS 0 37 #define FORE200E_VCI_BITS 10 38 #define NBR_CONNECT (1 << (FORE200E_VPI_BITS + FORE200E_VCI_BITS)) /* number of connections */ 39 40 41 #define TSD_FIXED 2 42 #define TSD_EXTENSION 0 43 #define TSD_NBR (TSD_FIXED + TSD_EXTENSION) 44 45 46 /* the cp starts putting a received PDU into one *small* buffer, 47 then it uses a number of *large* buffers for the trailing data. 48 we compute here the total number of receive segment descriptors 49 required to hold the largest possible PDU */ 50 51 #define RSD_REQUIRED (((MAX_PDU_SIZE - SMALL_BUFFER_SIZE + LARGE_BUFFER_SIZE) / LARGE_BUFFER_SIZE) + 1) 52 53 #define RSD_FIXED 3 54 55 /* RSD_REQUIRED receive segment descriptors are enough to describe a max-sized PDU, 56 but we have to keep the size of the receive PDU descriptor multiple of 32 bytes, 57 so we add one extra RSD to RSD_EXTENSION 58 (WARNING: THIS MAY CHANGE IF BUFFER SIZES ARE MODIFIED) */ 59 60 #define RSD_EXTENSION ((RSD_REQUIRED - RSD_FIXED) + 1) 61 #define RSD_NBR (RSD_FIXED + RSD_EXTENSION) 62 63 64 #define FORE200E_DEV(d) ((struct fore200e*)((d)->dev_data)) 65 #define FORE200E_VCC(d) ((struct fore200e_vcc*)((d)->dev_data)) 66 67 /* bitfields endian games */ 68 69 #if defined(__LITTLE_ENDIAN_BITFIELD) 70 #define BITFIELD2(b1, b2) b1; b2; 71 #define BITFIELD3(b1, b2, b3) b1; b2; b3; 72 #define BITFIELD4(b1, b2, b3, b4) b1; b2; b3; b4; 73 #define BITFIELD5(b1, b2, b3, b4, b5) b1; b2; b3; b4; b5; 74 #define BITFIELD6(b1, b2, b3, b4, b5, b6) b1; b2; b3; b4; b5; b6; 75 #elif defined(__BIG_ENDIAN_BITFIELD) 76 #define BITFIELD2(b1, b2) b2; b1; 77 #define BITFIELD3(b1, b2, b3) b3; b2; b1; 78 #define BITFIELD4(b1, b2, b3, b4) b4; b3; b2; b1; 79 #define BITFIELD5(b1, b2, b3, b4, b5) b5; b4; b3; b2; b1; 80 #define BITFIELD6(b1, b2, b3, b4, b5, b6) b6; b5; b4; b3; b2; b1; 81 #else 82 #error unknown bitfield endianess 83 #endif 84 85 86 /* ATM cell header (minus HEC byte) */ 87 88 typedef struct atm_header { 89 BITFIELD5( 90 u32 clp : 1, /* cell loss priority */ 91 u32 plt : 3, /* payload type */ 92 u32 vci : 16, /* virtual channel identifier */ 93 u32 vpi : 8, /* virtual path identifier */ 94 u32 gfc : 4 /* generic flow control */ 95 ) 96 } atm_header_t; 97 98 99 /* ATM adaptation layer id */ 100 101 typedef enum fore200e_aal { 102 FORE200E_AAL0 = 0, 103 FORE200E_AAL34 = 4, 104 FORE200E_AAL5 = 5, 105 } fore200e_aal_t; 106 107 108 /* transmit PDU descriptor specification */ 109 110 typedef struct tpd_spec { 111 BITFIELD4( 112 u32 length : 16, /* total PDU length */ 113 u32 nseg : 8, /* number of transmit segments */ 114 enum fore200e_aal aal : 4, /* adaptation layer */ 115 u32 intr : 4 /* interrupt requested */ 116 ) 117 } tpd_spec_t; 118 119 120 /* transmit PDU rate control */ 121 122 typedef struct tpd_rate 123 { 124 BITFIELD2( 125 u32 idle_cells : 16, /* number of idle cells to insert */ 126 u32 data_cells : 16 /* number of data cells to transmit */ 127 ) 128 } tpd_rate_t; 129 130 131 /* transmit segment descriptor */ 132 133 typedef struct tsd { 134 u32 buffer; /* transmit buffer DMA address */ 135 u32 length; /* number of bytes in buffer */ 136 } tsd_t; 137 138 139 /* transmit PDU descriptor */ 140 141 typedef struct tpd { 142 struct atm_header atm_header; /* ATM header minus HEC byte */ 143 struct tpd_spec spec; /* tpd specification */ 144 struct tpd_rate rate; /* tpd rate control */ 145 u32 pad; /* reserved */ 146 struct tsd tsd[ TSD_NBR ]; /* transmit segment descriptors */ 147 } tpd_t; 148 149 150 /* receive segment descriptor */ 151 152 typedef struct rsd { 153 u32 handle; /* host supplied receive buffer handle */ 154 u32 length; /* number of bytes in buffer */ 155 } rsd_t; 156 157 158 /* receive PDU descriptor */ 159 160 typedef struct rpd { 161 struct atm_header atm_header; /* ATM header minus HEC byte */ 162 u32 nseg; /* number of receive segments */ 163 struct rsd rsd[ RSD_NBR ]; /* receive segment descriptors */ 164 } rpd_t; 165 166 167 /* buffer scheme */ 168 169 typedef enum buffer_scheme { 170 BUFFER_SCHEME_ONE, 171 BUFFER_SCHEME_TWO, 172 BUFFER_SCHEME_NBR /* always last */ 173 } buffer_scheme_t; 174 175 176 /* buffer magnitude */ 177 178 typedef enum buffer_magn { 179 BUFFER_MAGN_SMALL, 180 BUFFER_MAGN_LARGE, 181 BUFFER_MAGN_NBR /* always last */ 182 } buffer_magn_t; 183 184 185 /* receive buffer descriptor */ 186 187 typedef struct rbd { 188 u32 handle; /* host supplied handle */ 189 u32 buffer_haddr; /* host DMA address of host buffer */ 190 } rbd_t; 191 192 193 /* receive buffer descriptor block */ 194 195 typedef struct rbd_block { 196 struct rbd rbd[ RBD_BLK_SIZE ]; /* receive buffer descriptor */ 197 } rbd_block_t; 198 199 200 /* tpd DMA address */ 201 202 typedef struct tpd_haddr { 203 BITFIELD3( 204 u32 size : 4, /* tpd size expressed in 32 byte blocks */ 205 u32 pad : 1, /* reserved */ 206 u32 haddr : 27 /* tpd DMA addr aligned on 32 byte boundary */ 207 ) 208 } tpd_haddr_t; 209 210 #define TPD_HADDR_SHIFT 5 /* addr aligned on 32 byte boundary */ 211 212 /* cp resident transmit queue entry */ 213 214 typedef struct cp_txq_entry { 215 struct tpd_haddr tpd_haddr; /* host DMA address of tpd */ 216 u32 status_haddr; /* host DMA address of completion status */ 217 } cp_txq_entry_t; 218 219 220 /* cp resident receive queue entry */ 221 222 typedef struct cp_rxq_entry { 223 u32 rpd_haddr; /* host DMA address of rpd */ 224 u32 status_haddr; /* host DMA address of completion status */ 225 } cp_rxq_entry_t; 226 227 228 /* cp resident buffer supply queue entry */ 229 230 typedef struct cp_bsq_entry { 231 u32 rbd_block_haddr; /* host DMA address of rbd block */ 232 u32 status_haddr; /* host DMA address of completion status */ 233 } cp_bsq_entry_t; 234 235 236 /* completion status */ 237 238 typedef volatile enum status { 239 STATUS_PENDING = (1<<0), /* initial status (written by host) */ 240 STATUS_COMPLETE = (1<<1), /* completion status (written by cp) */ 241 STATUS_FREE = (1<<2), /* initial status (written by host) */ 242 STATUS_ERROR = (1<<3) /* completion status (written by cp) */ 243 } status_t; 244 245 246 /* cp operation code */ 247 248 typedef enum opcode { 249 OPCODE_INITIALIZE = 1, /* initialize board */ 250 OPCODE_ACTIVATE_VCIN, /* activate incoming VCI */ 251 OPCODE_ACTIVATE_VCOUT, /* activate outgoing VCI */ 252 OPCODE_DEACTIVATE_VCIN, /* deactivate incoming VCI */ 253 OPCODE_DEACTIVATE_VCOUT, /* deactivate incoing VCI */ 254 OPCODE_GET_STATS, /* get board statistics */ 255 OPCODE_SET_OC3, /* set OC-3 registers */ 256 OPCODE_GET_OC3, /* get OC-3 registers */ 257 OPCODE_RESET_STATS, /* reset board statistics */ 258 OPCODE_GET_PROM, /* get expansion PROM data (PCI specific) */ 259 OPCODE_SET_VPI_BITS, /* set x bits of those decoded by the 260 firmware to be low order bits from 261 the VPI field of the ATM cell header */ 262 OPCODE_REQUEST_INTR = (1<<7) /* request interrupt */ 263 } opcode_t; 264 265 266 /* virtual path / virtual channel identifiers */ 267 268 typedef struct vpvc { 269 BITFIELD3( 270 u32 vci : 16, /* virtual channel identifier */ 271 u32 vpi : 8, /* virtual path identifier */ 272 u32 pad : 8 /* reserved */ 273 ) 274 } vpvc_t; 275 276 277 /* activate VC command opcode */ 278 279 typedef struct activate_opcode { 280 BITFIELD4( 281 enum opcode opcode : 8, /* cp opcode */ 282 enum fore200e_aal aal : 8, /* adaptation layer */ 283 enum buffer_scheme scheme : 8, /* buffer scheme */ 284 u32 pad : 8 /* reserved */ 285 ) 286 } activate_opcode_t; 287 288 289 /* activate VC command block */ 290 291 typedef struct activate_block { 292 struct activate_opcode opcode; /* activate VC command opcode */ 293 struct vpvc vpvc; /* VPI/VCI */ 294 u32 mtu; /* for AAL0 only */ 295 296 } activate_block_t; 297 298 299 /* deactivate VC command opcode */ 300 301 typedef struct deactivate_opcode { 302 BITFIELD2( 303 enum opcode opcode : 8, /* cp opcode */ 304 u32 pad : 24 /* reserved */ 305 ) 306 } deactivate_opcode_t; 307 308 309 /* deactivate VC command block */ 310 311 typedef struct deactivate_block { 312 struct deactivate_opcode opcode; /* deactivate VC command opcode */ 313 struct vpvc vpvc; /* VPI/VCI */ 314 } deactivate_block_t; 315 316 317 /* OC-3 registers */ 318 319 typedef struct oc3_regs { 320 u32 reg[ 128 ]; /* see the PMC Sierra PC5346 S/UNI-155-Lite 321 Saturn User Network Interface documentation 322 for a description of the OC-3 chip registers */ 323 } oc3_regs_t; 324 325 326 /* set/get OC-3 regs command opcode */ 327 328 typedef struct oc3_opcode { 329 BITFIELD4( 330 enum opcode opcode : 8, /* cp opcode */ 331 u32 reg : 8, /* register index */ 332 u32 value : 8, /* register value */ 333 u32 mask : 8 /* register mask that specifies which 334 bits of the register value field 335 are significant */ 336 ) 337 } oc3_opcode_t; 338 339 340 /* set/get OC-3 regs command block */ 341 342 typedef struct oc3_block { 343 struct oc3_opcode opcode; /* set/get OC-3 regs command opcode */ 344 u32 regs_haddr; /* host DMA address of OC-3 regs buffer */ 345 } oc3_block_t; 346 347 348 /* physical encoding statistics */ 349 350 typedef struct stats_phy { 351 __be32 crc_header_errors; /* cells received with bad header CRC */ 352 __be32 framing_errors; /* cells received with bad framing */ 353 __be32 pad[ 2 ]; /* i960 padding */ 354 } stats_phy_t; 355 356 357 /* OC-3 statistics */ 358 359 typedef struct stats_oc3 { 360 __be32 section_bip8_errors; /* section 8 bit interleaved parity */ 361 __be32 path_bip8_errors; /* path 8 bit interleaved parity */ 362 __be32 line_bip24_errors; /* line 24 bit interleaved parity */ 363 __be32 line_febe_errors; /* line far end block errors */ 364 __be32 path_febe_errors; /* path far end block errors */ 365 __be32 corr_hcs_errors; /* correctable header check sequence */ 366 __be32 ucorr_hcs_errors; /* uncorrectable header check sequence */ 367 __be32 pad[ 1 ]; /* i960 padding */ 368 } stats_oc3_t; 369 370 371 /* ATM statistics */ 372 373 typedef struct stats_atm { 374 __be32 cells_transmitted; /* cells transmitted */ 375 __be32 cells_received; /* cells received */ 376 __be32 vpi_bad_range; /* cell drops: VPI out of range */ 377 __be32 vpi_no_conn; /* cell drops: no connection for VPI */ 378 __be32 vci_bad_range; /* cell drops: VCI out of range */ 379 __be32 vci_no_conn; /* cell drops: no connection for VCI */ 380 __be32 pad[ 2 ]; /* i960 padding */ 381 } stats_atm_t; 382 383 /* AAL0 statistics */ 384 385 typedef struct stats_aal0 { 386 __be32 cells_transmitted; /* cells transmitted */ 387 __be32 cells_received; /* cells received */ 388 __be32 cells_dropped; /* cells dropped */ 389 __be32 pad[ 1 ]; /* i960 padding */ 390 } stats_aal0_t; 391 392 393 /* AAL3/4 statistics */ 394 395 typedef struct stats_aal34 { 396 __be32 cells_transmitted; /* cells transmitted from segmented PDUs */ 397 __be32 cells_received; /* cells reassembled into PDUs */ 398 __be32 cells_crc_errors; /* payload CRC error count */ 399 __be32 cells_protocol_errors; /* SAR or CS layer protocol errors */ 400 __be32 cells_dropped; /* cells dropped: partial reassembly */ 401 __be32 cspdus_transmitted; /* CS PDUs transmitted */ 402 __be32 cspdus_received; /* CS PDUs received */ 403 __be32 cspdus_protocol_errors; /* CS layer protocol errors */ 404 __be32 cspdus_dropped; /* reassembled PDUs drop'd (in cells) */ 405 __be32 pad[ 3 ]; /* i960 padding */ 406 } stats_aal34_t; 407 408 409 /* AAL5 statistics */ 410 411 typedef struct stats_aal5 { 412 __be32 cells_transmitted; /* cells transmitted from segmented SDUs */ 413 __be32 cells_received; /* cells reassembled into SDUs */ 414 __be32 cells_dropped; /* reassembled PDUs dropped (in cells) */ 415 __be32 congestion_experienced; /* CRC error and length wrong */ 416 __be32 cspdus_transmitted; /* CS PDUs transmitted */ 417 __be32 cspdus_received; /* CS PDUs received */ 418 __be32 cspdus_crc_errors; /* CS PDUs CRC errors */ 419 __be32 cspdus_protocol_errors; /* CS layer protocol errors */ 420 __be32 cspdus_dropped; /* reassembled PDUs dropped */ 421 __be32 pad[ 3 ]; /* i960 padding */ 422 } stats_aal5_t; 423 424 425 /* auxiliary statistics */ 426 427 typedef struct stats_aux { 428 __be32 small_b1_failed; /* receive BD allocation failures */ 429 __be32 large_b1_failed; /* receive BD allocation failures */ 430 __be32 small_b2_failed; /* receive BD allocation failures */ 431 __be32 large_b2_failed; /* receive BD allocation failures */ 432 __be32 rpd_alloc_failed; /* receive PDU allocation failures */ 433 __be32 receive_carrier; /* no carrier = 0, carrier = 1 */ 434 __be32 pad[ 2 ]; /* i960 padding */ 435 } stats_aux_t; 436 437 438 /* whole statistics buffer */ 439 440 typedef struct stats { 441 struct stats_phy phy; /* physical encoding statistics */ 442 struct stats_oc3 oc3; /* OC-3 statistics */ 443 struct stats_atm atm; /* ATM statistics */ 444 struct stats_aal0 aal0; /* AAL0 statistics */ 445 struct stats_aal34 aal34; /* AAL3/4 statistics */ 446 struct stats_aal5 aal5; /* AAL5 statistics */ 447 struct stats_aux aux; /* auxiliary statistics */ 448 } stats_t; 449 450 451 /* get statistics command opcode */ 452 453 typedef struct stats_opcode { 454 BITFIELD2( 455 enum opcode opcode : 8, /* cp opcode */ 456 u32 pad : 24 /* reserved */ 457 ) 458 } stats_opcode_t; 459 460 461 /* get statistics command block */ 462 463 typedef struct stats_block { 464 struct stats_opcode opcode; /* get statistics command opcode */ 465 u32 stats_haddr; /* host DMA address of stats buffer */ 466 } stats_block_t; 467 468 469 /* expansion PROM data (PCI specific) */ 470 471 typedef struct prom_data { 472 u32 hw_revision; /* hardware revision */ 473 u32 serial_number; /* board serial number */ 474 u8 mac_addr[ 8 ]; /* board MAC address */ 475 } prom_data_t; 476 477 478 /* get expansion PROM data command opcode */ 479 480 typedef struct prom_opcode { 481 BITFIELD2( 482 enum opcode opcode : 8, /* cp opcode */ 483 u32 pad : 24 /* reserved */ 484 ) 485 } prom_opcode_t; 486 487 488 /* get expansion PROM data command block */ 489 490 typedef struct prom_block { 491 struct prom_opcode opcode; /* get PROM data command opcode */ 492 u32 prom_haddr; /* host DMA address of PROM buffer */ 493 } prom_block_t; 494 495 496 /* cp command */ 497 498 typedef union cmd { 499 enum opcode opcode; /* operation code */ 500 struct activate_block activate_block; /* activate VC */ 501 struct deactivate_block deactivate_block; /* deactivate VC */ 502 struct stats_block stats_block; /* get statistics */ 503 struct prom_block prom_block; /* get expansion PROM data */ 504 struct oc3_block oc3_block; /* get/set OC-3 registers */ 505 u32 pad[ 4 ]; /* i960 padding */ 506 } cmd_t; 507 508 509 /* cp resident command queue */ 510 511 typedef struct cp_cmdq_entry { 512 union cmd cmd; /* command */ 513 u32 status_haddr; /* host DMA address of completion status */ 514 u32 pad[ 3 ]; /* i960 padding */ 515 } cp_cmdq_entry_t; 516 517 518 /* host resident transmit queue entry */ 519 520 typedef struct host_txq_entry { 521 struct cp_txq_entry __iomem *cp_entry; /* addr of cp resident tx queue entry */ 522 enum status* status; /* addr of host resident status */ 523 struct tpd* tpd; /* addr of transmit PDU descriptor */ 524 u32 tpd_dma; /* DMA address of tpd */ 525 struct sk_buff* skb; /* related skb */ 526 void* data; /* copy of misaligned data */ 527 unsigned long incarn; /* vc_map incarnation when submitted for tx */ 528 struct fore200e_vc_map* vc_map; 529 530 } host_txq_entry_t; 531 532 533 /* host resident receive queue entry */ 534 535 typedef struct host_rxq_entry { 536 struct cp_rxq_entry __iomem *cp_entry; /* addr of cp resident rx queue entry */ 537 enum status* status; /* addr of host resident status */ 538 struct rpd* rpd; /* addr of receive PDU descriptor */ 539 u32 rpd_dma; /* DMA address of rpd */ 540 } host_rxq_entry_t; 541 542 543 /* host resident buffer supply queue entry */ 544 545 typedef struct host_bsq_entry { 546 struct cp_bsq_entry __iomem *cp_entry; /* addr of cp resident buffer supply queue entry */ 547 enum status* status; /* addr of host resident status */ 548 struct rbd_block* rbd_block; /* addr of receive buffer descriptor block */ 549 u32 rbd_block_dma; /* DMA address od rdb */ 550 } host_bsq_entry_t; 551 552 553 /* host resident command queue entry */ 554 555 typedef struct host_cmdq_entry { 556 struct cp_cmdq_entry __iomem *cp_entry; /* addr of cp resident cmd queue entry */ 557 enum status *status; /* addr of host resident status */ 558 } host_cmdq_entry_t; 559 560 561 /* chunk of memory */ 562 563 typedef struct chunk { 564 void* alloc_addr; /* base address of allocated chunk */ 565 void* align_addr; /* base address of aligned chunk */ 566 dma_addr_t dma_addr; /* DMA address of aligned chunk */ 567 int direction; /* direction of DMA mapping */ 568 u32 alloc_size; /* length of allocated chunk */ 569 u32 align_size; /* length of aligned chunk */ 570 } chunk_t; 571 572 #define dma_size align_size /* DMA useable size */ 573 574 575 /* host resident receive buffer */ 576 577 typedef struct buffer { 578 struct buffer* next; /* next receive buffer */ 579 enum buffer_scheme scheme; /* buffer scheme */ 580 enum buffer_magn magn; /* buffer magnitude */ 581 struct chunk data; /* data buffer */ 582 #ifdef FORE200E_BSQ_DEBUG 583 unsigned long index; /* buffer # in queue */ 584 int supplied; /* 'buffer supplied' flag */ 585 #endif 586 } buffer_t; 587 588 589 #if (BITS_PER_LONG == 32) 590 #define FORE200E_BUF2HDL(buffer) ((u32)(buffer)) 591 #define FORE200E_HDL2BUF(handle) ((struct buffer*)(handle)) 592 #else /* deal with 64 bit pointers */ 593 #define FORE200E_BUF2HDL(buffer) ((u32)((u64)(buffer))) 594 #define FORE200E_HDL2BUF(handle) ((struct buffer*)(((u64)(handle)) | PAGE_OFFSET)) 595 #endif 596 597 598 /* host resident command queue */ 599 600 typedef struct host_cmdq { 601 struct host_cmdq_entry host_entry[ QUEUE_SIZE_CMD ]; /* host resident cmd queue entries */ 602 int head; /* head of cmd queue */ 603 struct chunk status; /* array of completion status */ 604 } host_cmdq_t; 605 606 607 /* host resident transmit queue */ 608 609 typedef struct host_txq { 610 struct host_txq_entry host_entry[ QUEUE_SIZE_TX ]; /* host resident tx queue entries */ 611 int head; /* head of tx queue */ 612 int tail; /* tail of tx queue */ 613 struct chunk tpd; /* array of tpds */ 614 struct chunk status; /* arry of completion status */ 615 int txing; /* number of pending PDUs in tx queue */ 616 } host_txq_t; 617 618 619 /* host resident receive queue */ 620 621 typedef struct host_rxq { 622 struct host_rxq_entry host_entry[ QUEUE_SIZE_RX ]; /* host resident rx queue entries */ 623 int head; /* head of rx queue */ 624 struct chunk rpd; /* array of rpds */ 625 struct chunk status; /* array of completion status */ 626 } host_rxq_t; 627 628 629 /* host resident buffer supply queues */ 630 631 typedef struct host_bsq { 632 struct host_bsq_entry host_entry[ QUEUE_SIZE_BS ]; /* host resident buffer supply queue entries */ 633 int head; /* head of buffer supply queue */ 634 struct chunk rbd_block; /* array of rbds */ 635 struct chunk status; /* array of completion status */ 636 struct buffer* buffer; /* array of rx buffers */ 637 struct buffer* freebuf; /* list of free rx buffers */ 638 volatile int freebuf_count; /* count of free rx buffers */ 639 } host_bsq_t; 640 641 642 /* header of the firmware image */ 643 644 typedef struct fw_header { 645 __le32 magic; /* magic number */ 646 __le32 version; /* firmware version id */ 647 __le32 load_offset; /* fw load offset in board memory */ 648 __le32 start_offset; /* fw execution start address in board memory */ 649 } fw_header_t; 650 651 #define FW_HEADER_MAGIC 0x65726f66 /* 'fore' */ 652 653 654 /* receive buffer supply queues scheme specification */ 655 656 typedef struct bs_spec { 657 u32 queue_length; /* queue capacity */ 658 u32 buffer_size; /* host buffer size */ 659 u32 pool_size; /* number of rbds */ 660 u32 supply_blksize; /* num of rbds in I/O block (multiple 661 of 4 between 4 and 124 inclusive) */ 662 } bs_spec_t; 663 664 665 /* initialization command block (one-time command, not in cmd queue) */ 666 667 typedef struct init_block { 668 enum opcode opcode; /* initialize command */ 669 enum status status; /* related status word */ 670 u32 receive_threshold; /* not used */ 671 u32 num_connect; /* ATM connections */ 672 u32 cmd_queue_len; /* length of command queue */ 673 u32 tx_queue_len; /* length of transmit queue */ 674 u32 rx_queue_len; /* length of receive queue */ 675 u32 rsd_extension; /* number of extra 32 byte blocks */ 676 u32 tsd_extension; /* number of extra 32 byte blocks */ 677 u32 conless_vpvc; /* not used */ 678 u32 pad[ 2 ]; /* force quad alignment */ 679 struct bs_spec bs_spec[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ]; /* buffer supply queues spec */ 680 } init_block_t; 681 682 683 typedef enum media_type { 684 MEDIA_TYPE_CAT5_UTP = 0x06, /* unshielded twisted pair */ 685 MEDIA_TYPE_MM_OC3_ST = 0x16, /* multimode fiber ST */ 686 MEDIA_TYPE_MM_OC3_SC = 0x26, /* multimode fiber SC */ 687 MEDIA_TYPE_SM_OC3_ST = 0x36, /* single-mode fiber ST */ 688 MEDIA_TYPE_SM_OC3_SC = 0x46 /* single-mode fiber SC */ 689 } media_type_t; 690 691 #define FORE200E_MEDIA_INDEX(media_type) ((media_type)>>4) 692 693 694 /* cp resident queues */ 695 696 typedef struct cp_queues { 697 u32 cp_cmdq; /* command queue */ 698 u32 cp_txq; /* transmit queue */ 699 u32 cp_rxq; /* receive queue */ 700 u32 cp_bsq[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ]; /* buffer supply queues */ 701 u32 imask; /* 1 enables cp to host interrupts */ 702 u32 istat; /* 1 for interrupt posted */ 703 u32 heap_base; /* offset form beginning of ram */ 704 u32 heap_size; /* space available for queues */ 705 u32 hlogger; /* non zero for host logging */ 706 u32 heartbeat; /* cp heartbeat */ 707 u32 fw_release; /* firmware version */ 708 u32 mon960_release; /* i960 monitor version */ 709 u32 tq_plen; /* transmit throughput measurements */ 710 /* make sure the init block remains on a quad word boundary */ 711 struct init_block init; /* one time cmd, not in cmd queue */ 712 enum media_type media_type; /* media type id */ 713 u32 oc3_revision; /* OC-3 revision number */ 714 } cp_queues_t; 715 716 717 /* boot status */ 718 719 typedef enum boot_status { 720 BSTAT_COLD_START = (u32) 0xc01dc01d, /* cold start */ 721 BSTAT_SELFTEST_OK = (u32) 0x02201958, /* self-test ok */ 722 BSTAT_SELFTEST_FAIL = (u32) 0xadbadbad, /* self-test failed */ 723 BSTAT_CP_RUNNING = (u32) 0xce11feed, /* cp is running */ 724 BSTAT_MON_TOO_BIG = (u32) 0x10aded00 /* i960 monitor is too big */ 725 } boot_status_t; 726 727 728 /* software UART */ 729 730 typedef struct soft_uart { 731 u32 send; /* write register */ 732 u32 recv; /* read register */ 733 } soft_uart_t; 734 735 #define FORE200E_CP_MONITOR_UART_FREE 0x00000000 736 #define FORE200E_CP_MONITOR_UART_AVAIL 0x01000000 737 738 739 /* i960 monitor */ 740 741 typedef struct cp_monitor { 742 struct soft_uart soft_uart; /* software UART */ 743 enum boot_status bstat; /* boot status */ 744 u32 app_base; /* application base offset */ 745 u32 mon_version; /* i960 monitor version */ 746 } cp_monitor_t; 747 748 749 /* device state */ 750 751 typedef enum fore200e_state { 752 FORE200E_STATE_BLANK, /* initial state */ 753 FORE200E_STATE_REGISTER, /* device registered */ 754 FORE200E_STATE_CONFIGURE, /* bus interface configured */ 755 FORE200E_STATE_MAP, /* board space mapped in host memory */ 756 FORE200E_STATE_RESET, /* board resetted */ 757 FORE200E_STATE_START_FW, /* firmware started */ 758 FORE200E_STATE_INITIALIZE, /* initialize command successful */ 759 FORE200E_STATE_INIT_CMDQ, /* command queue initialized */ 760 FORE200E_STATE_INIT_TXQ, /* transmit queue initialized */ 761 FORE200E_STATE_INIT_RXQ, /* receive queue initialized */ 762 FORE200E_STATE_INIT_BSQ, /* buffer supply queue initialized */ 763 FORE200E_STATE_ALLOC_BUF, /* receive buffers allocated */ 764 FORE200E_STATE_IRQ, /* host interrupt requested */ 765 FORE200E_STATE_COMPLETE /* initialization completed */ 766 } fore200e_state; 767 768 769 /* PCA-200E registers */ 770 771 typedef struct fore200e_pca_regs { 772 volatile u32 __iomem * hcr; /* address of host control register */ 773 volatile u32 __iomem * imr; /* address of host interrupt mask register */ 774 volatile u32 __iomem * psr; /* address of PCI specific register */ 775 } fore200e_pca_regs_t; 776 777 778 /* SBA-200E registers */ 779 780 typedef struct fore200e_sba_regs { 781 u32 __iomem *hcr; /* address of host control register */ 782 u32 __iomem *bsr; /* address of burst transfer size register */ 783 u32 __iomem *isr; /* address of interrupt level selection register */ 784 } fore200e_sba_regs_t; 785 786 787 /* model-specific registers */ 788 789 typedef union fore200e_regs { 790 struct fore200e_pca_regs pca; /* PCA-200E registers */ 791 struct fore200e_sba_regs sba; /* SBA-200E registers */ 792 } fore200e_regs; 793 794 795 struct fore200e; 796 797 /* bus-dependent data */ 798 799 typedef struct fore200e_bus { 800 char* model_name; /* board model name */ 801 char* proc_name; /* board name under /proc/atm */ 802 int descr_alignment; /* tpd/rpd/rbd DMA alignment requirement */ 803 int buffer_alignment; /* rx buffers DMA alignment requirement */ 804 int status_alignment; /* status words DMA alignment requirement */ 805 u32 (*read)(volatile u32 __iomem *); 806 void (*write)(u32, volatile u32 __iomem *); 807 u32 (*dma_map)(struct fore200e*, void*, int, int); 808 void (*dma_unmap)(struct fore200e*, u32, int, int); 809 void (*dma_sync_for_cpu)(struct fore200e*, u32, int, int); 810 void (*dma_sync_for_device)(struct fore200e*, u32, int, int); 811 int (*dma_chunk_alloc)(struct fore200e*, struct chunk*, int, int, int); 812 void (*dma_chunk_free)(struct fore200e*, struct chunk*); 813 int (*configure)(struct fore200e*); 814 int (*map)(struct fore200e*); 815 void (*reset)(struct fore200e*); 816 int (*prom_read)(struct fore200e*, struct prom_data*); 817 void (*unmap)(struct fore200e*); 818 void (*irq_enable)(struct fore200e*); 819 int (*irq_check)(struct fore200e*); 820 void (*irq_ack)(struct fore200e*); 821 int (*proc_read)(struct fore200e*, char*); 822 } fore200e_bus_t; 823 824 /* vc mapping */ 825 826 typedef struct fore200e_vc_map { 827 struct atm_vcc* vcc; /* vcc entry */ 828 unsigned long incarn; /* vcc incarnation number */ 829 } fore200e_vc_map_t; 830 831 #define FORE200E_VC_MAP(fore200e, vpi, vci) \ 832 (& (fore200e)->vc_map[ ((vpi) << FORE200E_VCI_BITS) | (vci) ]) 833 834 835 /* per-device data */ 836 837 typedef struct fore200e { 838 struct list_head entry; /* next device */ 839 const struct fore200e_bus* bus; /* bus-dependent code and data */ 840 union fore200e_regs regs; /* bus-dependent registers */ 841 struct atm_dev* atm_dev; /* ATM device */ 842 843 enum fore200e_state state; /* device state */ 844 845 char name[16]; /* device name */ 846 void* bus_dev; /* bus-specific kernel data */ 847 int irq; /* irq number */ 848 unsigned long phys_base; /* physical base address */ 849 void __iomem * virt_base; /* virtual base address */ 850 851 unsigned char esi[ ESI_LEN ]; /* end system identifier */ 852 853 struct cp_monitor __iomem * cp_monitor; /* i960 monitor address */ 854 struct cp_queues __iomem * cp_queues; /* cp resident queues */ 855 struct host_cmdq host_cmdq; /* host resident cmd queue */ 856 struct host_txq host_txq; /* host resident tx queue */ 857 struct host_rxq host_rxq; /* host resident rx queue */ 858 /* host resident buffer supply queues */ 859 struct host_bsq host_bsq[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ]; 860 861 u32 available_cell_rate; /* remaining pseudo-CBR bw on link */ 862 863 int loop_mode; /* S/UNI loopback mode */ 864 865 struct stats* stats; /* last snapshot of the stats */ 866 867 struct mutex rate_mtx; /* protects rate reservation ops */ 868 spinlock_t q_lock; /* protects queue ops */ 869 #ifdef FORE200E_USE_TASKLET 870 struct tasklet_struct tx_tasklet; /* performs tx interrupt work */ 871 struct tasklet_struct rx_tasklet; /* performs rx interrupt work */ 872 #endif 873 unsigned long tx_sat; /* tx queue saturation count */ 874 875 unsigned long incarn_count; 876 struct fore200e_vc_map vc_map[ NBR_CONNECT ]; /* vc mapping */ 877 } fore200e_t; 878 879 880 /* per-vcc data */ 881 882 typedef struct fore200e_vcc { 883 enum buffer_scheme scheme; /* rx buffer scheme */ 884 struct tpd_rate rate; /* tx rate control data */ 885 int rx_min_pdu; /* size of smallest PDU received */ 886 int rx_max_pdu; /* size of largest PDU received */ 887 int tx_min_pdu; /* size of smallest PDU transmitted */ 888 int tx_max_pdu; /* size of largest PDU transmitted */ 889 unsigned long tx_pdu; /* nbr of tx pdus */ 890 unsigned long rx_pdu; /* nbr of rx pdus */ 891 } fore200e_vcc_t; 892 893 894 895 /* 200E-series common memory layout */ 896 897 #define FORE200E_CP_MONITOR_OFFSET 0x00000400 /* i960 monitor interface */ 898 #define FORE200E_CP_QUEUES_OFFSET 0x00004d40 /* cp resident queues */ 899 900 901 /* PCA-200E memory layout */ 902 903 #define PCA200E_IOSPACE_LENGTH 0x00200000 904 905 #define PCA200E_HCR_OFFSET 0x00100000 /* board control register */ 906 #define PCA200E_IMR_OFFSET 0x00100004 /* host IRQ mask register */ 907 #define PCA200E_PSR_OFFSET 0x00100008 /* PCI specific register */ 908 909 910 /* PCA-200E host control register */ 911 912 #define PCA200E_HCR_RESET (1<<0) /* read / write */ 913 #define PCA200E_HCR_HOLD_LOCK (1<<1) /* read / write */ 914 #define PCA200E_HCR_I960FAIL (1<<2) /* read */ 915 #define PCA200E_HCR_INTRB (1<<2) /* write */ 916 #define PCA200E_HCR_HOLD_ACK (1<<3) /* read */ 917 #define PCA200E_HCR_INTRA (1<<3) /* write */ 918 #define PCA200E_HCR_OUTFULL (1<<4) /* read */ 919 #define PCA200E_HCR_CLRINTR (1<<4) /* write */ 920 #define PCA200E_HCR_ESPHOLD (1<<5) /* read */ 921 #define PCA200E_HCR_INFULL (1<<6) /* read */ 922 #define PCA200E_HCR_TESTMODE (1<<7) /* read */ 923 924 925 /* PCA-200E PCI bus interface regs (offsets in PCI config space) */ 926 927 #define PCA200E_PCI_LATENCY 0x40 /* maximum slave latenty */ 928 #define PCA200E_PCI_MASTER_CTRL 0x41 /* master control */ 929 #define PCA200E_PCI_THRESHOLD 0x42 /* burst / continuous req threshold */ 930 931 /* PBI master control register */ 932 933 #define PCA200E_CTRL_DIS_CACHE_RD (1<<0) /* disable cache-line reads */ 934 #define PCA200E_CTRL_DIS_WRT_INVAL (1<<1) /* disable writes and invalidates */ 935 #define PCA200E_CTRL_2_CACHE_WRT_INVAL (1<<2) /* require 2 cache-lines for writes and invalidates */ 936 #define PCA200E_CTRL_IGN_LAT_TIMER (1<<3) /* ignore the latency timer */ 937 #define PCA200E_CTRL_ENA_CONT_REQ_MODE (1<<4) /* enable continuous request mode */ 938 #define PCA200E_CTRL_LARGE_PCI_BURSTS (1<<5) /* force large PCI bus bursts */ 939 #define PCA200E_CTRL_CONVERT_ENDIAN (1<<6) /* convert endianess of slave RAM accesses */ 940 941 942 943 #define SBA200E_PROM_NAME "FORE,sba-200e" /* device name in openprom tree */ 944 945 946 /* size of SBA-200E registers */ 947 948 #define SBA200E_HCR_LENGTH 4 949 #define SBA200E_BSR_LENGTH 4 950 #define SBA200E_ISR_LENGTH 4 951 #define SBA200E_RAM_LENGTH 0x40000 952 953 954 /* SBA-200E SBUS burst transfer size register */ 955 956 #define SBA200E_BSR_BURST4 0x04 957 #define SBA200E_BSR_BURST8 0x08 958 #define SBA200E_BSR_BURST16 0x10 959 960 961 /* SBA-200E host control register */ 962 963 #define SBA200E_HCR_RESET (1<<0) /* read / write (sticky) */ 964 #define SBA200E_HCR_HOLD_LOCK (1<<1) /* read / write (sticky) */ 965 #define SBA200E_HCR_I960FAIL (1<<2) /* read */ 966 #define SBA200E_HCR_I960SETINTR (1<<2) /* write */ 967 #define SBA200E_HCR_OUTFULL (1<<3) /* read */ 968 #define SBA200E_HCR_INTR_CLR (1<<3) /* write */ 969 #define SBA200E_HCR_INTR_ENA (1<<4) /* read / write (sticky) */ 970 #define SBA200E_HCR_ESPHOLD (1<<5) /* read */ 971 #define SBA200E_HCR_INFULL (1<<6) /* read */ 972 #define SBA200E_HCR_TESTMODE (1<<7) /* read */ 973 #define SBA200E_HCR_INTR_REQ (1<<8) /* read */ 974 975 #define SBA200E_HCR_STICKY (SBA200E_HCR_RESET | SBA200E_HCR_HOLD_LOCK | SBA200E_HCR_INTR_ENA) 976 977 978 #endif /* __KERNEL__ */ 979 #endif /* _FORE200E_H */ 980