mmemcard.c revision 1.21
1 /* $NetBSD: mmemcard.c,v 1.21 2014/03/16 05:20:23 dholland Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by ITOH Yasufumi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: mmemcard.c,v 1.21 2014/03/16 05:20:23 dholland Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/buf.h> 37 #include <sys/bufq.h> 38 #include <sys/device.h> 39 #include <sys/disklabel.h> 40 #include <sys/disk.h> 41 #include <sys/kernel.h> 42 #include <sys/malloc.h> 43 #include <sys/proc.h> 44 #include <sys/stat.h> 45 #include <sys/systm.h> 46 #include <sys/vnode.h> 47 #include <sys/conf.h> 48 49 #include <dreamcast/dev/maple/maple.h> 50 #include <dreamcast/dev/maple/mapleconf.h> 51 52 #include "ioconf.h" 53 54 #define MMEM_MAXACCSIZE 1012 /* (255*4) - 8 = 253*32 / 8 */ 55 56 struct mmem_funcdef { /* XXX assuming little-endian structure packing */ 57 unsigned unused : 8, 58 ra : 4, /* number of access / read */ 59 wa : 4, /* number of access / write */ 60 bb : 8, /* block size / 32 - 1 */ 61 pt : 8; /* number of partition - 1 */ 62 }; 63 64 struct mmem_request_read_data { 65 uint32_t func_code; 66 uint8_t pt; 67 uint8_t phase; 68 uint16_t block; 69 }; 70 71 struct mmem_response_read_data { 72 uint32_t func_code; /* function code (big endian) */ 73 uint32_t blkno; /* 512byte block number (big endian) */ 74 uint8_t data[MMEM_MAXACCSIZE]; 75 }; 76 77 struct mmem_request_write_data { 78 uint32_t func_code; 79 uint8_t pt; 80 uint8_t phase; /* 0, 1, 2, 3: for each 128 byte */ 81 uint16_t block; 82 uint8_t data[MMEM_MAXACCSIZE]; 83 }; 84 #define MMEM_SIZE_REQW(sc) ((sc)->sc_waccsz + 8) 85 86 struct mmem_request_get_media_info { 87 uint32_t func_code; 88 uint32_t pt; /* pt (1 byte) and unused 3 bytes */ 89 }; 90 91 struct mmem_media_info { 92 uint16_t maxblk, minblk; 93 uint16_t infpos; 94 uint16_t fatpos, fatsz; 95 uint16_t dirpos, dirsz; 96 uint16_t icon; 97 uint16_t datasz; 98 uint16_t rsvd[3]; 99 }; 100 101 struct mmem_response_media_info { 102 uint32_t func_code; /* function code (big endian) */ 103 struct mmem_media_info info; 104 }; 105 106 struct mmem_softc { 107 device_t sc_dev; 108 109 device_t sc_parent; 110 struct maple_unit *sc_unit; 111 struct maple_devinfo *sc_devinfo; 112 113 enum mmem_stat { 114 MMEM_INIT, /* during initialization */ 115 MMEM_INIT2, /* during initialization */ 116 MMEM_IDLE, /* init done, not in I/O */ 117 MMEM_READ, /* in read operation */ 118 MMEM_WRITE1, /* in write operation (read and compare) */ 119 MMEM_WRITE2, /* in write operation (write) */ 120 MMEM_DETACH /* detaching */ 121 } sc_stat; 122 123 int sc_npt; /* number of partitions */ 124 int sc_bsize; /* block size */ 125 int sc_wacc; /* number of write access per block */ 126 int sc_waccsz; /* size of a write access */ 127 int sc_racc; /* number of read access per block */ 128 int sc_raccsz; /* size of a read access */ 129 130 struct mmem_pt { 131 int pt_flags; 132 #define MMEM_PT_OK 1 /* partition is alive */ 133 struct disk pt_dk; /* disk(9) */ 134 struct mmem_media_info pt_info; /* geometry per part */ 135 136 char pt_name[16 /* see device.h */ + 4 /* ".255" */]; 137 } *sc_pt; 138 139 /* write request buffer (only one is used at a time) */ 140 union { 141 struct mmem_request_read_data req_read; 142 struct mmem_request_write_data req_write; 143 struct mmem_request_get_media_info req_minfo; 144 } sc_req; 145 #define sc_reqr sc_req.req_read 146 #define sc_reqw sc_req.req_write 147 #define sc_reqm sc_req.req_minfo 148 149 /* pending buffers */ 150 struct bufq_state *sc_q; 151 152 /* current I/O access */ 153 struct buf *sc_bp; 154 int sc_cnt; 155 char *sc_iobuf; 156 int sc_retry; 157 #define MMEM_MAXRETRY 12 158 }; 159 160 /* 161 * minor number layout (mmemdetach() depends on this layout): 162 * 163 * 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 164 * |---------------------| |---------------------| |---------| 165 * unit part disklabel partition 166 */ 167 #define MMEM_PART(diskunit) ((diskunit) & 0xff) 168 #define MMEM_UNIT(diskunit) ((diskunit) >> 8) 169 #define MMEM_DISKMINOR(unit, part, disklabel_partition) \ 170 DISKMINOR(((unit) << 8) | (part), (disklabel_partition)) 171 172 static int mmemmatch(device_t, cfdata_t, void *); 173 static void mmemattach(device_t, device_t, void *); 174 static void mmem_defaultlabel(struct mmem_softc *, struct mmem_pt *, 175 struct disklabel *); 176 static int mmemdetach(device_t, int); 177 static void mmem_intr(void *, struct maple_response *, int, int); 178 static void mmem_printerror(const char *, int, int, uint32_t); 179 static void mmemstart(struct mmem_softc *); 180 static void mmemstart_bp(struct mmem_softc *); 181 static void mmemstart_write2(struct mmem_softc *); 182 static void mmemdone(struct mmem_softc *, struct mmem_pt *, int); 183 184 dev_type_open(mmemopen); 185 dev_type_close(mmemclose); 186 dev_type_read(mmemread); 187 dev_type_write(mmemwrite); 188 dev_type_ioctl(mmemioctl); 189 dev_type_strategy(mmemstrategy); 190 191 const struct bdevsw mmem_bdevsw = { 192 .d_open = mmemopen, 193 .d_close = mmemclose, 194 .d_strategy = mmemstrategy, 195 .d_ioctl = mmemioctl, 196 .d_dump = nodump, 197 .d_psize = nosize, 198 .d_flag = D_DISK 199 }; 200 201 const struct cdevsw mmem_cdevsw = { 202 .d_open = mmemopen, 203 .d_close = mmemclose, 204 .d_read = mmemread, 205 .d_write = mmemwrite, 206 .d_ioctl = mmemioctl, 207 .d_stop = nostop, 208 .d_tty = notty, 209 .d_poll = nopoll, 210 .d_mmap = nommap, 211 .d_kqfilter = nokqfilter, 212 .d_flag = D_DISK 213 }; 214 215 CFATTACH_DECL_NEW(mmem, sizeof(struct mmem_softc), 216 mmemmatch, mmemattach, mmemdetach, NULL); 217 218 struct dkdriver mmemdkdriver = { mmemstrategy }; 219 220 static int 221 mmemmatch(device_t parent, cfdata_t cf, void *aux) 222 { 223 struct maple_attach_args *ma = aux; 224 225 return ma->ma_function == MAPLE_FN_MEMCARD ? MAPLE_MATCH_FUNC : 0; 226 } 227 228 static void 229 mmemattach(device_t parent, device_t self, void *aux) 230 { 231 struct mmem_softc *sc = device_private(self); 232 struct maple_attach_args *ma = aux; 233 int i; 234 union { 235 uint32_t v; 236 struct mmem_funcdef s; 237 } funcdef; 238 239 sc->sc_dev = self; 240 sc->sc_parent = parent; 241 sc->sc_unit = ma->ma_unit; 242 sc->sc_devinfo = ma->ma_devinfo; 243 244 funcdef.v = maple_get_function_data(ma->ma_devinfo, MAPLE_FN_MEMCARD); 245 printf(": Memory card\n"); 246 printf("%s: %d part, %d bytes/block, ", 247 device_xname(self), 248 sc->sc_npt = funcdef.s.pt + 1, 249 sc->sc_bsize = (funcdef.s.bb + 1) << 5); 250 if ((sc->sc_wacc = funcdef.s.wa) == 0) 251 printf("no write, "); 252 else 253 printf("%d acc/write, ", sc->sc_wacc); 254 if ((sc->sc_racc = funcdef.s.ra) == 0) 255 printf("no read\n"); 256 else 257 printf("%d acc/read\n", sc->sc_racc); 258 259 /* 260 * start init sequence 261 */ 262 sc->sc_stat = MMEM_INIT; 263 bufq_alloc(&sc->sc_q, "disksort", BUFQ_SORT_RAWBLOCK); 264 265 /* check consistency */ 266 if (sc->sc_wacc != 0) { 267 sc->sc_waccsz = sc->sc_bsize / sc->sc_wacc; 268 if (sc->sc_bsize != sc->sc_waccsz * sc->sc_wacc) { 269 printf("%s: write access isn't equally divided\n", 270 device_xname(self)); 271 sc->sc_wacc = 0; /* no write */ 272 } else if (sc->sc_waccsz > MMEM_MAXACCSIZE) { 273 printf("%s: write access size is too large\n", 274 device_xname(self)); 275 sc->sc_wacc = 0; /* no write */ 276 } 277 } 278 if (sc->sc_racc != 0) { 279 sc->sc_raccsz = sc->sc_bsize / sc->sc_racc; 280 if (sc->sc_bsize != sc->sc_raccsz * sc->sc_racc) { 281 printf("%s: read access isn't equally divided\n", 282 device_xname(self)); 283 sc->sc_racc = 0; /* no read */ 284 } else if (sc->sc_raccsz > MMEM_MAXACCSIZE) { 285 printf("%s: read access size is too large\n", 286 device_xname(self)); 287 sc->sc_racc = 0; /* no read */ 288 } 289 } 290 if (sc->sc_wacc == 0 && sc->sc_racc == 0) { 291 printf("%s: device doesn't support read nor write\n", 292 device_xname(self)); 293 return; 294 } 295 296 /* per-part structure */ 297 sc->sc_pt = malloc(sizeof(struct mmem_pt) * sc->sc_npt, M_DEVBUF, 298 M_WAITOK|M_ZERO); 299 300 for (i = 0; i < sc->sc_npt; i++) { 301 sprintf(sc->sc_pt[i].pt_name, "%s.%d", device_xname(self), i); 302 } 303 304 maple_set_callback(parent, sc->sc_unit, MAPLE_FN_MEMCARD, 305 mmem_intr, sc); 306 307 /* 308 * get capacity (start from partition 0) 309 */ 310 sc->sc_reqm.func_code = htobe32(MAPLE_FUNC(MAPLE_FN_MEMCARD)); 311 sc->sc_reqm.pt = 0; 312 maple_command(sc->sc_parent, sc->sc_unit, MAPLE_FN_MEMCARD, 313 MAPLE_COMMAND_GETMINFO, sizeof sc->sc_reqm / 4, &sc->sc_reqm, 0); 314 } 315 316 static int 317 mmemdetach(device_t self, int flags) 318 { 319 struct mmem_softc *sc = device_private(self); 320 struct buf *bp; 321 int i; 322 int minor_l, minor_h; 323 324 sc->sc_stat = MMEM_DETACH; /* just in case */ 325 326 /* 327 * kill pending I/O 328 */ 329 if ((bp = sc->sc_bp) != NULL) { 330 bp->b_error = EIO; 331 bp->b_resid = bp->b_bcount; 332 biodone(bp); 333 } 334 while ((bp = bufq_get(sc->sc_q)) != NULL) { 335 bp->b_error = EIO; 336 bp->b_resid = bp->b_bcount; 337 biodone(bp); 338 } 339 bufq_free(sc->sc_q); 340 341 /* 342 * revoke vnodes 343 */ 344 #ifdef __HAVE_OLD_DISKLABEL 345 #error This code assumes DISKUNIT() is contiguous in minor number. 346 #endif 347 minor_l = MMEM_DISKMINOR(device_unit(self), 0, 0); 348 minor_h = MMEM_DISKMINOR(device_unit(self), sc->sc_npt - 1, 349 MAXPARTITIONS - 1); 350 vdevgone(bdevsw_lookup_major(&mmem_bdevsw), minor_l, minor_h, VBLK); 351 vdevgone(cdevsw_lookup_major(&mmem_cdevsw), minor_l, minor_h, VCHR); 352 353 /* 354 * free per-partition structure 355 */ 356 if (sc->sc_pt) { 357 /* 358 * detach disks 359 */ 360 for (i = 0; i < sc->sc_npt; i++) { 361 if (sc->sc_pt[i].pt_flags & MMEM_PT_OK) { 362 disk_detach(&sc->sc_pt[i].pt_dk); 363 disk_destroy(&sc->sc_pt[i].pt_dk); 364 } 365 } 366 free(sc->sc_pt, M_DEVBUF); 367 } 368 369 return 0; 370 } 371 372 /* fake disklabel */ 373 static void 374 mmem_defaultlabel(struct mmem_softc *sc, struct mmem_pt *pt, 375 struct disklabel *d) 376 { 377 378 memset(d, 0, sizeof *d); 379 380 #if 0 381 d->d_type = DTYPE_FLOPPY; /* XXX? */ 382 #endif 383 strncpy(d->d_typename, sc->sc_devinfo->di_product_name, 384 sizeof d->d_typename); 385 strcpy(d->d_packname, "fictitious"); 386 d->d_secsize = sc->sc_bsize; 387 d->d_ntracks = 1; /* XXX */ 388 d->d_nsectors = d->d_secpercyl = 8; /* XXX */ 389 d->d_secperunit = pt->pt_info.maxblk - pt->pt_info.minblk + 1; 390 d->d_ncylinders = d->d_secperunit / d->d_secpercyl; 391 d->d_rpm = 1; /* when 4 acc/write */ 392 393 d->d_npartitions = RAW_PART + 1; 394 d->d_partitions[RAW_PART].p_size = d->d_secperunit; 395 396 d->d_magic = d->d_magic2 = DISKMAGIC; 397 d->d_checksum = dkcksum(d); 398 } 399 400 /* 401 * called back from maple bus driver 402 */ 403 static void 404 mmem_intr(void *arg, struct maple_response *response, int sz, int flags) 405 { 406 struct mmem_softc *sc = arg; 407 struct mmem_response_read_data *r = (void *) response->data; 408 struct mmem_response_media_info *rm = (void *) response->data; 409 struct buf *bp; 410 int part; 411 struct mmem_pt *pt; 412 char pbuf[9]; 413 int off; 414 415 switch (sc->sc_stat) { 416 case MMEM_INIT: 417 /* checking part geometry */ 418 part = sc->sc_reqm.pt; 419 pt = &sc->sc_pt[part]; 420 switch ((maple_response_t) response->response_code) { 421 case MAPLE_RESPONSE_DATATRF: 422 pt->pt_info = rm->info; 423 format_bytes(pbuf, sizeof(pbuf), 424 (uint64_t) 425 ((pt->pt_info.maxblk - pt->pt_info.minblk + 1) 426 * sc->sc_bsize)); 427 printf("%s: %s, blk %d %d, inf %d, fat %d %d, dir %d %d, icon %d, data %d\n", 428 pt->pt_name, 429 pbuf, 430 pt->pt_info.maxblk, pt->pt_info.minblk, 431 pt->pt_info.infpos, 432 pt->pt_info.fatpos, pt->pt_info.fatsz, 433 pt->pt_info.dirpos, pt->pt_info.dirsz, 434 pt->pt_info.icon, 435 pt->pt_info.datasz); 436 437 disk_init(&pt->pt_dk, pt->pt_name, &mmemdkdriver); 438 disk_attach(&pt->pt_dk); 439 440 mmem_defaultlabel(sc, pt, pt->pt_dk.dk_label); 441 442 /* this partition is active */ 443 pt->pt_flags = MMEM_PT_OK; 444 445 break; 446 default: 447 printf("%s: init: unexpected response %#x, sz %d\n", 448 pt->pt_name, be32toh(response->response_code), sz); 449 break; 450 } 451 if (++part == sc->sc_npt) { 452 #if 1 453 /* 454 * XXX Read a block and discard the contents (only to 455 * turn off the access indicator on Visual Memory). 456 */ 457 pt = &sc->sc_pt[0]; 458 sc->sc_reqr.func_code = 459 htobe32(MAPLE_FUNC(MAPLE_FN_MEMCARD)); 460 sc->sc_reqr.pt = 0; 461 sc->sc_reqr.block = htobe16(pt->pt_info.minblk); 462 sc->sc_reqr.phase = 0; 463 maple_command(sc->sc_parent, sc->sc_unit, 464 MAPLE_FN_MEMCARD, MAPLE_COMMAND_BREAD, 465 sizeof sc->sc_reqr / 4, &sc->sc_reqr, 0); 466 sc->sc_stat = MMEM_INIT2; 467 #else 468 sc->sc_stat = MMEM_IDLE; /* init done */ 469 #endif 470 } else { 471 sc->sc_reqm.pt = part; 472 maple_command(sc->sc_parent, sc->sc_unit, 473 MAPLE_FN_MEMCARD, MAPLE_COMMAND_GETMINFO, 474 sizeof sc->sc_reqm / 4, &sc->sc_reqm, 0); 475 } 476 break; 477 478 case MMEM_INIT2: 479 /* XXX just discard */ 480 sc->sc_stat = MMEM_IDLE; /* init done */ 481 break; 482 483 case MMEM_READ: 484 bp = sc->sc_bp; 485 486 switch ((maple_response_t) response->response_code) { 487 case MAPLE_RESPONSE_DATATRF: /* read done */ 488 off = sc->sc_raccsz * sc->sc_reqr.phase; 489 memcpy(sc->sc_iobuf + off, r->data + off, 490 sc->sc_raccsz); 491 492 if (++sc->sc_reqr.phase == sc->sc_racc) { 493 /* all phase done */ 494 pt = &sc->sc_pt[sc->sc_reqr.pt]; 495 mmemdone(sc, pt, 0); 496 } else { 497 /* go next phase */ 498 maple_command(sc->sc_parent, sc->sc_unit, 499 MAPLE_FN_MEMCARD, MAPLE_COMMAND_BREAD, 500 sizeof sc->sc_reqr / 4, &sc->sc_reqr, 0); 501 } 502 break; 503 case MAPLE_RESPONSE_FILEERR: 504 mmem_printerror(sc->sc_pt[sc->sc_reqr.pt].pt_name, 505 1, bp->b_rawblkno, 506 r->func_code /* XXX */); 507 mmemstart_bp(sc); /* retry */ 508 break; 509 default: 510 printf("%s: read: unexpected response %#x %#x, sz %d\n", 511 sc->sc_pt[sc->sc_reqr.pt].pt_name, 512 be32toh(response->response_code), 513 be32toh(r->func_code), sz); 514 mmemstart_bp(sc); /* retry */ 515 break; 516 } 517 break; 518 519 case MMEM_WRITE1: /* read before write / verify after write */ 520 bp = sc->sc_bp; 521 522 switch ((maple_response_t) response->response_code) { 523 case MAPLE_RESPONSE_DATATRF: /* read done */ 524 off = sc->sc_raccsz * sc->sc_reqr.phase; 525 if (memcmp(r->data + off, sc->sc_iobuf + off, 526 sc->sc_raccsz)) { 527 /* 528 * data differ, start writing 529 */ 530 mmemstart_write2(sc); 531 } else if (++sc->sc_reqr.phase == sc->sc_racc) { 532 /* 533 * all phase done and compared equal 534 */ 535 pt = &sc->sc_pt[sc->sc_reqr.pt]; 536 mmemdone(sc, pt, 0); 537 } else { 538 /* go next phase */ 539 maple_command(sc->sc_parent, sc->sc_unit, 540 MAPLE_FN_MEMCARD, MAPLE_COMMAND_BREAD, 541 sizeof sc->sc_reqr / 4, &sc->sc_reqr, 0); 542 } 543 break; 544 case MAPLE_RESPONSE_FILEERR: 545 mmem_printerror(sc->sc_pt[sc->sc_reqr.pt].pt_name, 546 1, bp->b_rawblkno, 547 r->func_code /* XXX */); 548 mmemstart_write2(sc); /* start writing */ 549 break; 550 default: 551 printf("%s: verify: unexpected response %#x %#x, sz %d\n", 552 sc->sc_pt[sc->sc_reqr.pt].pt_name, 553 be32toh(response->response_code), 554 be32toh(r->func_code), sz); 555 mmemstart_write2(sc); /* start writing */ 556 break; 557 } 558 break; 559 560 case MMEM_WRITE2: /* write */ 561 bp = sc->sc_bp; 562 563 switch ((maple_response_t) response->response_code) { 564 case MAPLE_RESPONSE_OK: /* write done */ 565 if (sc->sc_reqw.phase == sc->sc_wacc) { 566 /* all phase done */ 567 mmemstart_bp(sc); /* start verify */ 568 } else if (++sc->sc_reqw.phase == sc->sc_wacc) { 569 /* check error */ 570 maple_command(sc->sc_parent, sc->sc_unit, 571 MAPLE_FN_MEMCARD, MAPLE_COMMAND_GETLASTERR, 572 2 /* no data */ , &sc->sc_reqw, 573 MAPLE_FLAG_CMD_PERIODIC_TIMING); 574 } else { 575 /* go next phase */ 576 memcpy(sc->sc_reqw.data, sc->sc_iobuf + 577 sc->sc_waccsz * sc->sc_reqw.phase, 578 sc->sc_waccsz); 579 maple_command(sc->sc_parent, sc->sc_unit, 580 MAPLE_FN_MEMCARD, MAPLE_COMMAND_BWRITE, 581 MMEM_SIZE_REQW(sc) / 4, &sc->sc_reqw, 582 MAPLE_FLAG_CMD_PERIODIC_TIMING); 583 } 584 break; 585 case MAPLE_RESPONSE_FILEERR: 586 mmem_printerror(sc->sc_pt[sc->sc_reqw.pt].pt_name, 587 0, bp->b_rawblkno, 588 r->func_code /* XXX */); 589 mmemstart_write2(sc); /* retry writing */ 590 break; 591 default: 592 printf("%s: write: unexpected response %#x, %#x, sz %d\n", 593 sc->sc_pt[sc->sc_reqw.pt].pt_name, 594 be32toh(response->response_code), 595 be32toh(r->func_code), sz); 596 mmemstart_write2(sc); /* retry writing */ 597 break; 598 } 599 break; 600 601 default: 602 break; 603 } 604 } 605 606 static void 607 mmem_printerror(const char *head, int rd, int blk, uint32_t code) 608 { 609 610 printf("%s: error %sing blk %d:", head, rd? "read" : "writ", blk); 611 NTOHL(code); 612 if (code & 1) 613 printf(" PT error"); 614 if (code & 2) 615 printf(" Phase error"); 616 if (code & 4) 617 printf(" Block error"); 618 if (code & 010) 619 printf(" Write error"); 620 if (code & 020) 621 printf(" Length error"); 622 if (code & 040) 623 printf(" CRC error"); 624 if (code & ~077) 625 printf(" Unknown error %#x", code & ~077); 626 printf("\n"); 627 } 628 629 int 630 mmemopen(dev_t dev, int flags, int devtype, struct lwp *l) 631 { 632 int diskunit, unit, part, labelpart; 633 struct mmem_softc *sc; 634 struct mmem_pt *pt; 635 636 diskunit = DISKUNIT(dev); 637 unit = MMEM_UNIT(diskunit); 638 part = MMEM_PART(diskunit); 639 labelpart = DISKPART(dev); 640 if ((sc = device_lookup_private(&mmem_cd, unit)) == NULL 641 || sc->sc_stat == MMEM_INIT 642 || sc->sc_stat == MMEM_INIT2 643 || part >= sc->sc_npt || (pt = &sc->sc_pt[part])->pt_flags == 0) 644 return ENXIO; 645 646 switch (devtype) { 647 case S_IFCHR: 648 pt->pt_dk.dk_copenmask |= (1 << labelpart); 649 break; 650 case S_IFBLK: 651 pt->pt_dk.dk_bopenmask |= (1 << labelpart); 652 break; 653 } 654 655 return 0; 656 } 657 658 int 659 mmemclose(dev_t dev, int flags, int devtype, struct lwp *l) 660 { 661 int diskunit, unit, part, labelpart; 662 struct mmem_softc *sc; 663 struct mmem_pt *pt; 664 665 diskunit = DISKUNIT(dev); 666 unit = MMEM_UNIT(diskunit); 667 part = MMEM_PART(diskunit); 668 sc = device_lookup_private(&mmem_cd, unit); 669 pt = &sc->sc_pt[part]; 670 labelpart = DISKPART(dev); 671 672 switch (devtype) { 673 case S_IFCHR: 674 pt->pt_dk.dk_copenmask &= ~(1 << labelpart); 675 break; 676 case S_IFBLK: 677 pt->pt_dk.dk_bopenmask &= ~(1 << labelpart); 678 break; 679 } 680 681 return 0; 682 } 683 684 void 685 mmemstrategy(struct buf *bp) 686 { 687 int diskunit, unit, part, labelpart; 688 struct mmem_softc *sc; 689 struct mmem_pt *pt; 690 daddr_t off, nblk, cnt; 691 692 diskunit = DISKUNIT(bp->b_dev); 693 unit = MMEM_UNIT(diskunit); 694 part = MMEM_PART(diskunit); 695 if ((sc = device_lookup_private(&mmem_cd, unit)) == NULL 696 || sc->sc_stat == MMEM_INIT 697 || sc->sc_stat == MMEM_INIT2 698 || part >= sc->sc_npt || (pt = &sc->sc_pt[part])->pt_flags == 0) 699 goto inval; 700 701 #if 0 702 printf("%s: mmemstrategy: blkno %d, count %ld\n", 703 pt->pt_name, bp->b_blkno, bp->b_bcount); 704 #endif 705 706 if (bp->b_flags & B_READ) { 707 if (sc->sc_racc == 0) 708 goto inval; /* no read */ 709 } else if (sc->sc_wacc == 0) { 710 bp->b_error = EROFS; /* no write */ 711 goto done; 712 } 713 714 if (bp->b_blkno & ~(~(daddr_t)0 >> (DEV_BSHIFT + 1 /* sign bit */)) 715 || (bp->b_bcount % sc->sc_bsize) != 0) 716 goto inval; 717 718 cnt = howmany(bp->b_bcount, sc->sc_bsize); 719 if (cnt == 0) 720 goto done; /* no work */ 721 722 off = bp->b_blkno * DEV_BSIZE / sc->sc_bsize; 723 724 /* offset to disklabel partition */ 725 labelpart = DISKPART(bp->b_dev); 726 if (labelpart == RAW_PART) { 727 nblk = pt->pt_info.maxblk - pt->pt_info.minblk + 1; 728 } else { 729 off += 730 nblk = pt->pt_dk.dk_label->d_partitions[labelpart].p_offset; 731 nblk += pt->pt_dk.dk_label->d_partitions[labelpart].p_size; 732 } 733 734 /* deal with the EOF condition */ 735 if (off + cnt > nblk) { 736 if (off >= nblk) { 737 if (off == nblk) 738 goto done; 739 goto inval; 740 } 741 cnt = nblk - off; 742 bp->b_resid = bp->b_bcount - (cnt * sc->sc_bsize); 743 } 744 745 bp->b_rawblkno = off; 746 747 /* queue this transfer */ 748 bufq_put(sc->sc_q, bp); 749 750 if (sc->sc_stat == MMEM_IDLE) 751 mmemstart(sc); 752 753 return; 754 755 inval: bp->b_error = EINVAL; 756 done: bp->b_resid = bp->b_bcount; 757 biodone(bp); 758 } 759 760 /* 761 * start I/O operations 762 */ 763 static void 764 mmemstart(struct mmem_softc *sc) 765 { 766 struct buf *bp; 767 struct mmem_pt *pt; 768 int s; 769 770 if ((bp = bufq_get(sc->sc_q)) == NULL) { 771 sc->sc_stat = MMEM_IDLE; 772 maple_enable_unit_ping(sc->sc_parent, sc->sc_unit, 773 MAPLE_FN_MEMCARD, 1); 774 return; 775 } 776 777 sc->sc_bp = bp; 778 sc->sc_cnt = howmany(bp->b_bcount - bp->b_resid, sc->sc_bsize); 779 KASSERT(sc->sc_cnt); 780 sc->sc_iobuf = bp->b_data; 781 sc->sc_retry = 0; 782 783 pt = &sc->sc_pt[MMEM_PART(DISKUNIT(bp->b_dev))]; 784 s = splbio(); 785 disk_busy(&pt->pt_dk); 786 splx(s); 787 788 /* 789 * I/O access will fail if the removal detection (by maple driver) 790 * occurs before finishing the I/O, so disable it. 791 * We are sending commands, and the removal detection is still alive. 792 */ 793 maple_enable_unit_ping(sc->sc_parent, sc->sc_unit, MAPLE_FN_MEMCARD, 0); 794 795 mmemstart_bp(sc); 796 } 797 798 /* 799 * start/retry a specified I/O operation 800 */ 801 static void 802 mmemstart_bp(struct mmem_softc *sc) 803 { 804 struct buf *bp; 805 int diskunit, part; 806 struct mmem_pt *pt; 807 808 bp = sc->sc_bp; 809 diskunit = DISKUNIT(bp->b_dev); 810 part = MMEM_PART(diskunit); 811 pt = &sc->sc_pt[part]; 812 813 /* handle retry */ 814 if (sc->sc_retry++ > MMEM_MAXRETRY) { 815 /* retry count exceeded */ 816 mmemdone(sc, pt, EIO); 817 return; 818 } 819 820 /* 821 * Start the first phase (phase# = 0). 822 */ 823 /* start read */ 824 sc->sc_stat = (bp->b_flags & B_READ) ? MMEM_READ : MMEM_WRITE1; 825 sc->sc_reqr.func_code = htobe32(MAPLE_FUNC(MAPLE_FN_MEMCARD)); 826 sc->sc_reqr.pt = part; 827 sc->sc_reqr.block = htobe16(bp->b_rawblkno); 828 sc->sc_reqr.phase = 0; /* first phase */ 829 maple_command(sc->sc_parent, sc->sc_unit, MAPLE_FN_MEMCARD, 830 MAPLE_COMMAND_BREAD, sizeof sc->sc_reqr / 4, &sc->sc_reqr, 0); 831 } 832 833 static void 834 mmemstart_write2(struct mmem_softc *sc) 835 { 836 struct buf *bp; 837 int diskunit, part; 838 struct mmem_pt *pt; 839 840 bp = sc->sc_bp; 841 diskunit = DISKUNIT(bp->b_dev); 842 part = MMEM_PART(diskunit); 843 pt = &sc->sc_pt[part]; 844 845 /* handle retry */ 846 if (sc->sc_retry++ > MMEM_MAXRETRY - 2 /* spare for verify read */) { 847 /* retry count exceeded */ 848 mmemdone(sc, pt, EIO); 849 return; 850 } 851 852 /* 853 * Start the first phase (phase# = 0). 854 */ 855 /* start write */ 856 sc->sc_stat = MMEM_WRITE2; 857 sc->sc_reqw.func_code = htobe32(MAPLE_FUNC(MAPLE_FN_MEMCARD)); 858 sc->sc_reqw.pt = part; 859 sc->sc_reqw.block = htobe16(bp->b_rawblkno); 860 sc->sc_reqw.phase = 0; /* first phase */ 861 memcpy(sc->sc_reqw.data, sc->sc_iobuf /* + sc->sc_waccsz * phase */, 862 sc->sc_waccsz); 863 maple_command(sc->sc_parent, sc->sc_unit, MAPLE_FN_MEMCARD, 864 MAPLE_COMMAND_BWRITE, MMEM_SIZE_REQW(sc) / 4, &sc->sc_reqw, 865 MAPLE_FLAG_CMD_PERIODIC_TIMING); 866 } 867 868 static void 869 mmemdone(struct mmem_softc *sc, struct mmem_pt *pt, int err) 870 { 871 struct buf *bp = sc->sc_bp; 872 int s; 873 int bcnt; 874 875 KASSERT(bp); 876 877 if (err) { 878 bcnt = (char *)sc->sc_iobuf - (char *)bp->b_data; 879 bp->b_resid = bp->b_bcount - bcnt; 880 881 /* raise error if no block is read */ 882 if (bcnt == 0) { 883 bp->b_error = err; 884 } 885 goto term_xfer; 886 } 887 888 sc->sc_iobuf += sc->sc_bsize; 889 if (--sc->sc_cnt == 0) { 890 term_xfer: 891 /* terminate current transfer */ 892 sc->sc_bp = NULL; 893 s = splbio(); 894 disk_unbusy(&pt->pt_dk, 895 (char *)sc->sc_iobuf - (char *)bp->b_data, 896 sc->sc_stat == MMEM_READ); 897 biodone(bp); 898 splx(s); 899 900 /* go next transfer */ 901 mmemstart(sc); 902 } else { 903 /* go next block */ 904 bp->b_rawblkno++; 905 sc->sc_retry = 0; 906 mmemstart_bp(sc); 907 } 908 } 909 910 int 911 mmemread(dev_t dev, struct uio *uio, int flags) 912 { 913 914 return physio(mmemstrategy, NULL, dev, B_READ, minphys, uio); 915 } 916 917 int 918 mmemwrite(dev_t dev, struct uio *uio, int flags) 919 { 920 921 return physio(mmemstrategy, NULL, dev, B_WRITE, minphys, uio); 922 } 923 924 int 925 mmemioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 926 { 927 int diskunit, unit, part; 928 struct mmem_softc *sc; 929 struct mmem_pt *pt; 930 931 diskunit = DISKUNIT(dev); 932 unit = MMEM_UNIT(diskunit); 933 part = MMEM_PART(diskunit); 934 sc = device_lookup_private(&mmem_cd, unit); 935 pt = &sc->sc_pt[part]; 936 937 switch (cmd) { 938 case DIOCGDINFO: 939 *(struct disklabel *)data = *pt->pt_dk.dk_label; /* XXX */ 940 break; 941 942 default: 943 /* generic maple ioctl */ 944 return maple_unit_ioctl(sc->sc_parent, sc->sc_unit, cmd, data, 945 flag, l); 946 } 947 948 return 0; 949 } 950
Indexes created Mon Sep 29 21:09:56 GMT 2025