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