1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 M. Warner Losh. All rights reserved. 5 * Copyright (c) 2009 Oleksandr Tymoshenko. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include "opt_platform.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bio.h> 36 #include <sys/bus.h> 37 #include <sys/conf.h> 38 #include <sys/kernel.h> 39 #include <sys/kthread.h> 40 #include <sys/lock.h> 41 #include <sys/mbuf.h> 42 #include <sys/malloc.h> 43 #include <sys/module.h> 44 #include <sys/mutex.h> 45 #include <geom/geom_disk.h> 46 47 #ifdef FDT 48 #include <dev/fdt/fdt_common.h> 49 #include <dev/ofw/ofw_bus_subr.h> 50 #include <dev/ofw/openfirm.h> 51 #endif 52 53 #include <dev/spibus/spi.h> 54 #include "spibus_if.h" 55 56 #include <dev/flash/mx25lreg.h> 57 58 #define FL_NONE 0x00 59 #define FL_ERASE_4K 0x01 60 #define FL_ERASE_32K 0x02 61 #define FL_ENABLE_4B_ADDR 0x04 62 #define FL_DISABLE_4B_ADDR 0x08 63 64 /* 65 * Define the sectorsize to be a smaller size rather than the flash 66 * sector size. Trying to run FFS off of a 64k flash sector size 67 * results in a completely un-usable system. 68 */ 69 #define MX25L_SECTORSIZE 512 70 71 struct mx25l_flash_ident 72 { 73 const char *name; 74 uint8_t manufacturer_id; 75 uint16_t device_id; 76 unsigned int sectorsize; 77 unsigned int sectorcount; 78 unsigned int flags; 79 }; 80 81 struct mx25l_softc 82 { 83 device_t sc_dev; 84 uint8_t sc_manufacturer_id; 85 uint16_t sc_device_id; 86 unsigned int sc_sectorsize; 87 struct mtx sc_mtx; 88 struct disk *sc_disk; 89 struct proc *sc_p; 90 struct bio_queue_head sc_bio_queue; 91 unsigned int sc_flags; 92 }; 93 94 #define M25PXX_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 95 #define M25PXX_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 96 #define M25PXX_LOCK_INIT(_sc) \ 97 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \ 98 "mx25l", MTX_DEF) 99 #define M25PXX_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx); 100 #define M25PXX_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED); 101 #define M25PXX_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED); 102 103 /* disk routines */ 104 static int mx25l_open(struct disk *dp); 105 static int mx25l_close(struct disk *dp); 106 static int mx25l_ioctl(struct disk *, u_long, void *, int, struct thread *); 107 static void mx25l_strategy(struct bio *bp); 108 static int mx25l_getattr(struct bio *bp); 109 static void mx25l_task(void *arg); 110 111 struct mx25l_flash_ident flash_devices[] = { 112 { "en25f32", 0x1c, 0x3116, 64 * 1024, 64, FL_NONE }, 113 { "en25p32", 0x1c, 0x2016, 64 * 1024, 64, FL_NONE }, 114 { "en25p64", 0x1c, 0x2017, 64 * 1024, 128, FL_NONE }, 115 { "en25q32", 0x1c, 0x3016, 64 * 1024, 64, FL_NONE }, 116 { "en25q64", 0x1c, 0x3017, 64 * 1024, 128, FL_ERASE_4K }, 117 { "m25p32", 0x20, 0x2016, 64 * 1024, 64, FL_NONE }, 118 { "m25p64", 0x20, 0x2017, 64 * 1024, 128, FL_NONE }, 119 { "mx25ll32", 0xc2, 0x2016, 64 * 1024, 64, FL_NONE }, 120 { "mx25ll64", 0xc2, 0x2017, 64 * 1024, 128, FL_NONE }, 121 { "mx25ll128", 0xc2, 0x2018, 64 * 1024, 256, FL_ERASE_4K | FL_ERASE_32K }, 122 { "mx25ll256", 0xc2, 0x2019, 64 * 1024, 512, FL_ERASE_4K | FL_ERASE_32K | FL_ENABLE_4B_ADDR }, 123 { "s25fl032", 0x01, 0x0215, 64 * 1024, 64, FL_NONE }, 124 { "s25fl064", 0x01, 0x0216, 64 * 1024, 128, FL_NONE }, 125 { "s25fl128", 0x01, 0x2018, 64 * 1024, 256, FL_NONE }, 126 { "s25fl256s", 0x01, 0x0219, 64 * 1024, 512, FL_NONE }, 127 { "SST25VF010A", 0xbf, 0x2549, 4 * 1024, 32, FL_ERASE_4K | FL_ERASE_32K }, 128 { "SST25VF032B", 0xbf, 0x254a, 64 * 1024, 64, FL_ERASE_4K | FL_ERASE_32K }, 129 130 /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ 131 { "w25x32", 0xef, 0x3016, 64 * 1024, 64, FL_ERASE_4K }, 132 { "w25x64", 0xef, 0x3017, 64 * 1024, 128, FL_ERASE_4K }, 133 { "w25q32", 0xef, 0x4016, 64 * 1024, 64, FL_ERASE_4K }, 134 { "w25q64", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 135 { "w25q64bv", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 136 { "w25q128", 0xef, 0x4018, 64 * 1024, 256, FL_ERASE_4K }, 137 { "w25q256", 0xef, 0x4019, 64 * 1024, 512, FL_ERASE_4K }, 138 139 /* Atmel */ 140 { "at25df641", 0x1f, 0x4800, 64 * 1024, 128, FL_ERASE_4K }, 141 142 /* GigaDevice */ 143 { "gd25q64", 0xc8, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 144 }; 145 146 static uint8_t 147 mx25l_get_status(device_t dev) 148 { 149 uint8_t txBuf[2], rxBuf[2]; 150 struct spi_command cmd; 151 int err; 152 153 memset(&cmd, 0, sizeof(cmd)); 154 memset(txBuf, 0, sizeof(txBuf)); 155 memset(rxBuf, 0, sizeof(rxBuf)); 156 157 txBuf[0] = CMD_READ_STATUS; 158 cmd.tx_cmd = txBuf; 159 cmd.rx_cmd = rxBuf; 160 cmd.rx_cmd_sz = 2; 161 cmd.tx_cmd_sz = 2; 162 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 163 return (rxBuf[1]); 164 } 165 166 static void 167 mx25l_wait_for_device_ready(device_t dev) 168 { 169 while ((mx25l_get_status(dev) & STATUS_WIP)) 170 continue; 171 } 172 173 static struct mx25l_flash_ident* 174 mx25l_get_device_ident(struct mx25l_softc *sc) 175 { 176 device_t dev = sc->sc_dev; 177 uint8_t txBuf[8], rxBuf[8]; 178 struct spi_command cmd; 179 uint8_t manufacturer_id; 180 uint16_t dev_id; 181 int err, i; 182 183 memset(&cmd, 0, sizeof(cmd)); 184 memset(txBuf, 0, sizeof(txBuf)); 185 memset(rxBuf, 0, sizeof(rxBuf)); 186 187 txBuf[0] = CMD_READ_IDENT; 188 cmd.tx_cmd = &txBuf; 189 cmd.rx_cmd = &rxBuf; 190 /* 191 * Some compatible devices has extended two-bytes ID 192 * We'll use only manufacturer/deviceid atm 193 */ 194 cmd.tx_cmd_sz = 4; 195 cmd.rx_cmd_sz = 4; 196 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 197 if (err) 198 return (NULL); 199 200 manufacturer_id = rxBuf[1]; 201 dev_id = (rxBuf[2] << 8) | (rxBuf[3]); 202 203 for (i = 0; 204 i < nitems(flash_devices); i++) { 205 if ((flash_devices[i].manufacturer_id == manufacturer_id) && 206 (flash_devices[i].device_id == dev_id)) 207 return &flash_devices[i]; 208 } 209 210 printf("Unknown SPI flash device. Vendor: %02x, device id: %04x\n", 211 manufacturer_id, dev_id); 212 return (NULL); 213 } 214 215 static void 216 mx25l_set_writable(device_t dev, int writable) 217 { 218 uint8_t txBuf[1], rxBuf[1]; 219 struct spi_command cmd; 220 int err; 221 222 memset(&cmd, 0, sizeof(cmd)); 223 memset(txBuf, 0, sizeof(txBuf)); 224 memset(rxBuf, 0, sizeof(rxBuf)); 225 226 txBuf[0] = writable ? CMD_WRITE_ENABLE : CMD_WRITE_DISABLE; 227 cmd.tx_cmd = txBuf; 228 cmd.rx_cmd = rxBuf; 229 cmd.rx_cmd_sz = 1; 230 cmd.tx_cmd_sz = 1; 231 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 232 } 233 234 static void 235 mx25l_erase_cmd(device_t dev, off_t sector, uint8_t ecmd) 236 { 237 struct mx25l_softc *sc; 238 uint8_t txBuf[5], rxBuf[5]; 239 struct spi_command cmd; 240 int err; 241 242 sc = device_get_softc(dev); 243 244 mx25l_wait_for_device_ready(dev); 245 mx25l_set_writable(dev, 1); 246 247 memset(&cmd, 0, sizeof(cmd)); 248 memset(txBuf, 0, sizeof(txBuf)); 249 memset(rxBuf, 0, sizeof(rxBuf)); 250 251 txBuf[0] = ecmd; 252 cmd.tx_cmd = txBuf; 253 cmd.rx_cmd = rxBuf; 254 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 255 cmd.rx_cmd_sz = 5; 256 cmd.tx_cmd_sz = 5; 257 txBuf[1] = ((sector >> 24) & 0xff); 258 txBuf[2] = ((sector >> 16) & 0xff); 259 txBuf[3] = ((sector >> 8) & 0xff); 260 txBuf[4] = (sector & 0xff); 261 } else { 262 cmd.rx_cmd_sz = 4; 263 cmd.tx_cmd_sz = 4; 264 txBuf[1] = ((sector >> 16) & 0xff); 265 txBuf[2] = ((sector >> 8) & 0xff); 266 txBuf[3] = (sector & 0xff); 267 } 268 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 269 } 270 271 static int 272 mx25l_write(device_t dev, off_t offset, caddr_t data, off_t count) 273 { 274 struct mx25l_softc *sc; 275 uint8_t txBuf[8], rxBuf[8]; 276 struct spi_command cmd; 277 off_t write_offset; 278 long bytes_to_write, bytes_writen; 279 device_t pdev; 280 int err = 0; 281 282 pdev = device_get_parent(dev); 283 sc = device_get_softc(dev); 284 285 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 286 cmd.tx_cmd_sz = 5; 287 cmd.rx_cmd_sz = 5; 288 } else { 289 cmd.tx_cmd_sz = 4; 290 cmd.rx_cmd_sz = 4; 291 } 292 293 bytes_writen = 0; 294 write_offset = offset; 295 296 /* 297 * Use the erase sectorsize here since blocks are fully erased 298 * first before they're written to. 299 */ 300 if (count % sc->sc_sectorsize != 0 || offset % sc->sc_sectorsize != 0) 301 return (EIO); 302 303 /* 304 * Assume here that we write per-sector only 305 * and sector size should be 256 bytes aligned 306 */ 307 KASSERT(write_offset % FLASH_PAGE_SIZE == 0, 308 ("offset for BIO_WRITE is not page size (%d bytes) aligned", 309 FLASH_PAGE_SIZE)); 310 311 /* 312 * Maximum write size for CMD_PAGE_PROGRAM is 313 * FLASH_PAGE_SIZE, so split data to chunks 314 * FLASH_PAGE_SIZE bytes eash and write them 315 * one by one 316 */ 317 while (bytes_writen < count) { 318 /* 319 * If we crossed sector boundary - erase next sector 320 */ 321 if (((offset + bytes_writen) % sc->sc_sectorsize) == 0) 322 mx25l_erase_cmd(dev, offset + bytes_writen, CMD_SECTOR_ERASE); 323 324 txBuf[0] = CMD_PAGE_PROGRAM; 325 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 326 txBuf[1] = ((write_offset >> 24) & 0xff); 327 txBuf[2] = ((write_offset >> 16) & 0xff); 328 txBuf[3] = ((write_offset >> 8) & 0xff); 329 txBuf[4] = (write_offset & 0xff); 330 } else { 331 txBuf[1] = ((write_offset >> 16) & 0xff); 332 txBuf[2] = ((write_offset >> 8) & 0xff); 333 txBuf[3] = (write_offset & 0xff); 334 } 335 336 bytes_to_write = MIN(FLASH_PAGE_SIZE, 337 count - bytes_writen); 338 cmd.tx_cmd = txBuf; 339 cmd.rx_cmd = rxBuf; 340 cmd.tx_data = data + bytes_writen; 341 cmd.tx_data_sz = bytes_to_write; 342 cmd.rx_data = data + bytes_writen; 343 cmd.rx_data_sz = bytes_to_write; 344 345 /* 346 * Eash completed write operation resets WEL 347 * (write enable latch) to disabled state, 348 * so we re-enable it here 349 */ 350 mx25l_wait_for_device_ready(dev); 351 mx25l_set_writable(dev, 1); 352 353 err = SPIBUS_TRANSFER(pdev, dev, &cmd); 354 if (err) 355 break; 356 357 bytes_writen += bytes_to_write; 358 write_offset += bytes_to_write; 359 } 360 361 return (err); 362 } 363 364 static int 365 mx25l_read(device_t dev, off_t offset, caddr_t data, off_t count) 366 { 367 struct mx25l_softc *sc; 368 uint8_t txBuf[8], rxBuf[8]; 369 struct spi_command cmd; 370 device_t pdev; 371 int err = 0; 372 373 pdev = device_get_parent(dev); 374 sc = device_get_softc(dev); 375 376 /* 377 * Enforce the disk read sectorsize not the erase sectorsize. 378 * In this way, smaller read IO is possible,dramatically 379 * speeding up filesystem/geom_compress access. 380 */ 381 if (count % sc->sc_disk->d_sectorsize != 0 382 || offset % sc->sc_disk->d_sectorsize != 0) 383 return (EIO); 384 385 txBuf[0] = CMD_FAST_READ; 386 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 387 cmd.tx_cmd_sz = 6; 388 cmd.rx_cmd_sz = 6; 389 390 txBuf[1] = ((offset >> 24) & 0xff); 391 txBuf[2] = ((offset >> 16) & 0xff); 392 txBuf[3] = ((offset >> 8) & 0xff); 393 txBuf[4] = (offset & 0xff); 394 /* Dummy byte */ 395 txBuf[5] = 0; 396 } else { 397 cmd.tx_cmd_sz = 5; 398 cmd.rx_cmd_sz = 5; 399 400 txBuf[1] = ((offset >> 16) & 0xff); 401 txBuf[2] = ((offset >> 8) & 0xff); 402 txBuf[3] = (offset & 0xff); 403 /* Dummy byte */ 404 txBuf[4] = 0; 405 } 406 407 cmd.tx_cmd = txBuf; 408 cmd.rx_cmd = rxBuf; 409 cmd.tx_data = data; 410 cmd.tx_data_sz = count; 411 cmd.rx_data = data; 412 cmd.rx_data_sz = count; 413 414 err = SPIBUS_TRANSFER(pdev, dev, &cmd); 415 416 return (err); 417 } 418 419 static int 420 mx25l_set_4b_mode(device_t dev, uint8_t command) 421 { 422 uint8_t txBuf[1], rxBuf[1]; 423 struct spi_command cmd; 424 device_t pdev; 425 int err; 426 427 memset(&cmd, 0, sizeof(cmd)); 428 memset(txBuf, 0, sizeof(txBuf)); 429 memset(rxBuf, 0, sizeof(rxBuf)); 430 431 pdev = device_get_parent(dev); 432 433 cmd.tx_cmd_sz = cmd.rx_cmd_sz = 1; 434 435 cmd.tx_cmd = txBuf; 436 cmd.rx_cmd = rxBuf; 437 438 txBuf[0] = command; 439 440 err = SPIBUS_TRANSFER(pdev, dev, &cmd); 441 442 mx25l_wait_for_device_ready(dev); 443 444 return (err); 445 } 446 447 #ifdef FDT 448 static struct ofw_compat_data compat_data[] = { 449 { "st,m25p", 1 }, 450 { "jedec,spi-nor", 1 }, 451 { NULL, 0 }, 452 }; 453 #endif 454 455 static int 456 mx25l_probe(device_t dev) 457 { 458 #ifdef FDT 459 int i; 460 461 if (!ofw_bus_status_okay(dev)) 462 return (ENXIO); 463 464 /* First try to match the compatible property to the compat_data */ 465 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 1) 466 goto found; 467 468 /* 469 * Next, try to find a compatible device using the names in the 470 * flash_devices structure 471 */ 472 for (i = 0; i < nitems(flash_devices); i++) 473 if (ofw_bus_is_compatible(dev, flash_devices[i].name)) 474 goto found; 475 476 return (ENXIO); 477 found: 478 #endif 479 device_set_desc(dev, "M25Pxx Flash Family"); 480 481 return (0); 482 } 483 484 static int 485 mx25l_attach(device_t dev) 486 { 487 struct mx25l_softc *sc; 488 struct mx25l_flash_ident *ident; 489 490 sc = device_get_softc(dev); 491 sc->sc_dev = dev; 492 M25PXX_LOCK_INIT(sc); 493 494 ident = mx25l_get_device_ident(sc); 495 if (ident == NULL) 496 return (ENXIO); 497 498 mx25l_wait_for_device_ready(sc->sc_dev); 499 500 sc->sc_disk = disk_alloc(); 501 sc->sc_disk->d_open = mx25l_open; 502 sc->sc_disk->d_close = mx25l_close; 503 sc->sc_disk->d_strategy = mx25l_strategy; 504 sc->sc_disk->d_getattr = mx25l_getattr; 505 sc->sc_disk->d_ioctl = mx25l_ioctl; 506 sc->sc_disk->d_name = "flash/spi"; 507 sc->sc_disk->d_drv1 = sc; 508 sc->sc_disk->d_maxsize = DFLTPHYS; 509 sc->sc_disk->d_sectorsize = MX25L_SECTORSIZE; 510 sc->sc_disk->d_mediasize = ident->sectorsize * ident->sectorcount; 511 sc->sc_disk->d_unit = device_get_unit(sc->sc_dev); 512 sc->sc_disk->d_dump = NULL; /* NB: no dumps */ 513 /* Sectorsize for erase operations */ 514 sc->sc_sectorsize = ident->sectorsize; 515 sc->sc_flags = ident->flags; 516 517 if (sc->sc_flags & FL_ENABLE_4B_ADDR) 518 mx25l_set_4b_mode(dev, CMD_ENTER_4B_MODE); 519 520 if (sc->sc_flags & FL_DISABLE_4B_ADDR) 521 mx25l_set_4b_mode(dev, CMD_EXIT_4B_MODE); 522 523 /* NB: use stripesize to hold the erase/region size for RedBoot */ 524 sc->sc_disk->d_stripesize = ident->sectorsize; 525 526 disk_create(sc->sc_disk, DISK_VERSION); 527 bioq_init(&sc->sc_bio_queue); 528 529 kproc_create(&mx25l_task, sc, &sc->sc_p, 0, 0, "task: mx25l flash"); 530 device_printf(sc->sc_dev, "%s, sector %d bytes, %d sectors\n", 531 ident->name, ident->sectorsize, ident->sectorcount); 532 533 return (0); 534 } 535 536 static int 537 mx25l_detach(device_t dev) 538 { 539 540 return (EIO); 541 } 542 543 static int 544 mx25l_open(struct disk *dp) 545 { 546 return (0); 547 } 548 549 static int 550 mx25l_close(struct disk *dp) 551 { 552 553 return (0); 554 } 555 556 static int 557 mx25l_ioctl(struct disk *dp, u_long cmd, void *data, int fflag, 558 struct thread *td) 559 { 560 561 return (EINVAL); 562 } 563 564 static void 565 mx25l_strategy(struct bio *bp) 566 { 567 struct mx25l_softc *sc; 568 569 sc = (struct mx25l_softc *)bp->bio_disk->d_drv1; 570 M25PXX_LOCK(sc); 571 bioq_disksort(&sc->sc_bio_queue, bp); 572 wakeup(sc); 573 M25PXX_UNLOCK(sc); 574 } 575 576 static int 577 mx25l_getattr(struct bio *bp) 578 { 579 struct mx25l_softc *sc; 580 device_t dev; 581 582 if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL) 583 return (ENXIO); 584 585 sc = bp->bio_disk->d_drv1; 586 dev = sc->sc_dev; 587 588 if (strcmp(bp->bio_attribute, "SPI::device") == 0) { 589 if (bp->bio_length != sizeof(dev)) 590 return (EFAULT); 591 bcopy(&dev, bp->bio_data, sizeof(dev)); 592 } else 593 return (-1); 594 return (0); 595 } 596 597 static void 598 mx25l_task(void *arg) 599 { 600 struct mx25l_softc *sc = (struct mx25l_softc*)arg; 601 struct bio *bp; 602 device_t dev; 603 604 for (;;) { 605 dev = sc->sc_dev; 606 M25PXX_LOCK(sc); 607 do { 608 bp = bioq_first(&sc->sc_bio_queue); 609 if (bp == NULL) 610 msleep(sc, &sc->sc_mtx, PRIBIO, "jobqueue", 0); 611 } while (bp == NULL); 612 bioq_remove(&sc->sc_bio_queue, bp); 613 M25PXX_UNLOCK(sc); 614 615 switch (bp->bio_cmd) { 616 case BIO_READ: 617 bp->bio_error = mx25l_read(dev, bp->bio_offset, 618 bp->bio_data, bp->bio_bcount); 619 break; 620 case BIO_WRITE: 621 bp->bio_error = mx25l_write(dev, bp->bio_offset, 622 bp->bio_data, bp->bio_bcount); 623 break; 624 default: 625 bp->bio_error = EINVAL; 626 } 627 628 629 biodone(bp); 630 } 631 } 632 633 static devclass_t mx25l_devclass; 634 635 static device_method_t mx25l_methods[] = { 636 /* Device interface */ 637 DEVMETHOD(device_probe, mx25l_probe), 638 DEVMETHOD(device_attach, mx25l_attach), 639 DEVMETHOD(device_detach, mx25l_detach), 640 641 { 0, 0 } 642 }; 643 644 static driver_t mx25l_driver = { 645 "mx25l", 646 mx25l_methods, 647 sizeof(struct mx25l_softc), 648 }; 649 650 DRIVER_MODULE(mx25l, spibus, mx25l_driver, mx25l_devclass, 0, 0); 651