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 { "w25q32", 0xef, 0x4016, 64 * 1024, 64, FL_ERASE_4K }, 128 { "w25q64", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 129 { "w25q64bv", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 130 { "w25q128", 0xef, 0x4018, 64 * 1024, 256, FL_ERASE_4K }, 131 { "w25q256", 0xef, 0x4019, 64 * 1024, 512, FL_ERASE_4K }, 132 }; 133 134 static uint8_t 135 mx25l_get_status(device_t dev) 136 { 137 uint8_t txBuf[2], rxBuf[2]; 138 struct spi_command cmd; 139 int err; 140 141 memset(&cmd, 0, sizeof(cmd)); 142 memset(txBuf, 0, sizeof(txBuf)); 143 memset(rxBuf, 0, sizeof(rxBuf)); 144 145 txBuf[0] = CMD_READ_STATUS; 146 cmd.tx_cmd = txBuf; 147 cmd.rx_cmd = rxBuf; 148 cmd.rx_cmd_sz = 2; 149 cmd.tx_cmd_sz = 2; 150 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 151 return (rxBuf[1]); 152 } 153 154 static void 155 mx25l_wait_for_device_ready(device_t dev) 156 { 157 while ((mx25l_get_status(dev) & STATUS_WIP)) 158 continue; 159 } 160 161 static struct mx25l_flash_ident* 162 mx25l_get_device_ident(struct mx25l_softc *sc) 163 { 164 device_t dev = sc->sc_dev; 165 uint8_t txBuf[8], rxBuf[8]; 166 struct spi_command cmd; 167 uint8_t manufacturer_id; 168 uint16_t dev_id; 169 int err, i; 170 171 memset(&cmd, 0, sizeof(cmd)); 172 memset(txBuf, 0, sizeof(txBuf)); 173 memset(rxBuf, 0, sizeof(rxBuf)); 174 175 txBuf[0] = CMD_READ_IDENT; 176 cmd.tx_cmd = &txBuf; 177 cmd.rx_cmd = &rxBuf; 178 /* 179 * Some compatible devices has extended two-bytes ID 180 * We'll use only manufacturer/deviceid atm 181 */ 182 cmd.tx_cmd_sz = 4; 183 cmd.rx_cmd_sz = 4; 184 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 185 if (err) 186 return (NULL); 187 188 manufacturer_id = rxBuf[1]; 189 dev_id = (rxBuf[2] << 8) | (rxBuf[3]); 190 191 for (i = 0; 192 i < nitems(flash_devices); i++) { 193 if ((flash_devices[i].manufacturer_id == manufacturer_id) && 194 (flash_devices[i].device_id == dev_id)) 195 return &flash_devices[i]; 196 } 197 198 printf("Unknown SPI flash device. Vendor: %02x, device id: %04x\n", 199 manufacturer_id, dev_id); 200 return (NULL); 201 } 202 203 static void 204 mx25l_set_writable(device_t dev, int writable) 205 { 206 uint8_t txBuf[1], rxBuf[1]; 207 struct spi_command cmd; 208 int err; 209 210 memset(&cmd, 0, sizeof(cmd)); 211 memset(txBuf, 0, sizeof(txBuf)); 212 memset(rxBuf, 0, sizeof(rxBuf)); 213 214 txBuf[0] = writable ? CMD_WRITE_ENABLE : CMD_WRITE_DISABLE; 215 cmd.tx_cmd = txBuf; 216 cmd.rx_cmd = rxBuf; 217 cmd.rx_cmd_sz = 1; 218 cmd.tx_cmd_sz = 1; 219 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 220 } 221 222 static void 223 mx25l_erase_cmd(device_t dev, off_t sector, uint8_t ecmd) 224 { 225 struct mx25l_softc *sc; 226 uint8_t txBuf[5], rxBuf[5]; 227 struct spi_command cmd; 228 int err; 229 230 sc = device_get_softc(dev); 231 232 mx25l_wait_for_device_ready(dev); 233 mx25l_set_writable(dev, 1); 234 235 memset(&cmd, 0, sizeof(cmd)); 236 memset(txBuf, 0, sizeof(txBuf)); 237 memset(rxBuf, 0, sizeof(rxBuf)); 238 239 txBuf[0] = ecmd; 240 cmd.tx_cmd = txBuf; 241 cmd.rx_cmd = rxBuf; 242 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 243 cmd.rx_cmd_sz = 5; 244 cmd.tx_cmd_sz = 5; 245 txBuf[1] = ((sector >> 24) & 0xff); 246 txBuf[2] = ((sector >> 16) & 0xff); 247 txBuf[3] = ((sector >> 8) & 0xff); 248 txBuf[4] = (sector & 0xff); 249 } else { 250 cmd.rx_cmd_sz = 4; 251 cmd.tx_cmd_sz = 4; 252 txBuf[1] = ((sector >> 16) & 0xff); 253 txBuf[2] = ((sector >> 8) & 0xff); 254 txBuf[3] = (sector & 0xff); 255 } 256 err = SPIBUS_TRANSFER(device_get_parent(dev), dev, &cmd); 257 } 258 259 static int 260 mx25l_write(device_t dev, off_t offset, caddr_t data, off_t count) 261 { 262 struct mx25l_softc *sc; 263 uint8_t txBuf[8], rxBuf[8]; 264 struct spi_command cmd; 265 off_t write_offset; 266 long bytes_to_write, bytes_writen; 267 device_t pdev; 268 int err = 0; 269 270 pdev = device_get_parent(dev); 271 sc = device_get_softc(dev); 272 273 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 274 cmd.tx_cmd_sz = 5; 275 cmd.rx_cmd_sz = 5; 276 } else { 277 cmd.tx_cmd_sz = 4; 278 cmd.rx_cmd_sz = 4; 279 } 280 281 bytes_writen = 0; 282 write_offset = offset; 283 284 /* 285 * Use the erase sectorsize here since blocks are fully erased 286 * first before they're written to. 287 */ 288 if (count % sc->sc_sectorsize != 0 || offset % sc->sc_sectorsize != 0) 289 return (EIO); 290 291 /* 292 * Assume here that we write per-sector only 293 * and sector size should be 256 bytes aligned 294 */ 295 KASSERT(write_offset % FLASH_PAGE_SIZE == 0, 296 ("offset for BIO_WRITE is not page size (%d bytes) aligned", 297 FLASH_PAGE_SIZE)); 298 299 /* 300 * Maximum write size for CMD_PAGE_PROGRAM is 301 * FLASH_PAGE_SIZE, so split data to chunks 302 * FLASH_PAGE_SIZE bytes eash and write them 303 * one by one 304 */ 305 while (bytes_writen < count) { 306 /* 307 * If we crossed sector boundary - erase next sector 308 */ 309 if (((offset + bytes_writen) % sc->sc_sectorsize) == 0) 310 mx25l_erase_cmd(dev, offset + bytes_writen, CMD_SECTOR_ERASE); 311 312 txBuf[0] = CMD_PAGE_PROGRAM; 313 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 314 txBuf[1] = ((write_offset >> 24) & 0xff); 315 txBuf[2] = ((write_offset >> 16) & 0xff); 316 txBuf[3] = ((write_offset >> 8) & 0xff); 317 txBuf[4] = (write_offset & 0xff); 318 } else { 319 txBuf[1] = ((write_offset >> 16) & 0xff); 320 txBuf[2] = ((write_offset >> 8) & 0xff); 321 txBuf[3] = (write_offset & 0xff); 322 } 323 324 bytes_to_write = MIN(FLASH_PAGE_SIZE, 325 count - bytes_writen); 326 cmd.tx_cmd = txBuf; 327 cmd.rx_cmd = rxBuf; 328 cmd.tx_data = data + bytes_writen; 329 cmd.tx_data_sz = bytes_to_write; 330 cmd.rx_data = data + bytes_writen; 331 cmd.rx_data_sz = bytes_to_write; 332 333 /* 334 * Eash completed write operation resets WEL 335 * (write enable latch) to disabled state, 336 * so we re-enable it here 337 */ 338 mx25l_wait_for_device_ready(dev); 339 mx25l_set_writable(dev, 1); 340 341 err = SPIBUS_TRANSFER(pdev, dev, &cmd); 342 if (err) 343 break; 344 345 bytes_writen += bytes_to_write; 346 write_offset += bytes_to_write; 347 } 348 349 return (err); 350 } 351 352 static int 353 mx25l_read(device_t dev, off_t offset, caddr_t data, off_t count) 354 { 355 struct mx25l_softc *sc; 356 uint8_t txBuf[8], rxBuf[8]; 357 struct spi_command cmd; 358 device_t pdev; 359 int err = 0; 360 361 pdev = device_get_parent(dev); 362 sc = device_get_softc(dev); 363 364 /* 365 * Enforce the disk read sectorsize not the erase sectorsize. 366 * In this way, smaller read IO is possible,dramatically 367 * speeding up filesystem/geom_compress access. 368 */ 369 if (count % sc->sc_disk->d_sectorsize != 0 370 || offset % sc->sc_disk->d_sectorsize != 0) 371 return (EIO); 372 373 txBuf[0] = CMD_FAST_READ; 374 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 375 cmd.tx_cmd_sz = 6; 376 cmd.rx_cmd_sz = 6; 377 378 txBuf[1] = ((offset >> 24) & 0xff); 379 txBuf[2] = ((offset >> 16) & 0xff); 380 txBuf[3] = ((offset >> 8) & 0xff); 381 txBuf[4] = (offset & 0xff); 382 /* Dummy byte */ 383 txBuf[5] = 0; 384 } else { 385 cmd.tx_cmd_sz = 5; 386 cmd.rx_cmd_sz = 5; 387 388 txBuf[1] = ((offset >> 16) & 0xff); 389 txBuf[2] = ((offset >> 8) & 0xff); 390 txBuf[3] = (offset & 0xff); 391 /* Dummy byte */ 392 txBuf[4] = 0; 393 } 394 395 cmd.tx_cmd = txBuf; 396 cmd.rx_cmd = rxBuf; 397 cmd.tx_data = data; 398 cmd.tx_data_sz = count; 399 cmd.rx_data = data; 400 cmd.rx_data_sz = count; 401 402 err = SPIBUS_TRANSFER(pdev, dev, &cmd); 403 404 return (err); 405 } 406 407 static int 408 mx25l_set_4b_mode(device_t dev, uint8_t command) 409 { 410 uint8_t txBuf[1], rxBuf[1]; 411 struct spi_command cmd; 412 device_t pdev; 413 int err; 414 415 memset(&cmd, 0, sizeof(cmd)); 416 memset(txBuf, 0, sizeof(txBuf)); 417 memset(rxBuf, 0, sizeof(rxBuf)); 418 419 pdev = device_get_parent(dev); 420 421 cmd.tx_cmd_sz = cmd.rx_cmd_sz = 1; 422 423 cmd.tx_cmd = txBuf; 424 cmd.rx_cmd = rxBuf; 425 426 txBuf[0] = command; 427 428 err = SPIBUS_TRANSFER(pdev, dev, &cmd); 429 430 mx25l_wait_for_device_ready(dev); 431 432 return (err); 433 } 434 435 #ifdef FDT 436 static struct ofw_compat_data compat_data[] = { 437 { "st,m25p", 1 }, 438 { "jedec,spi-nor", 1 }, 439 { NULL, 0 }, 440 }; 441 #endif 442 443 static int 444 mx25l_probe(device_t dev) 445 { 446 #ifdef FDT 447 int i; 448 449 if (!ofw_bus_status_okay(dev)) 450 return (ENXIO); 451 452 /* First try to match the compatible property to the compat_data */ 453 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 1) 454 goto found; 455 456 /* 457 * Next, try to find a compatible device using the names in the 458 * flash_devices structure 459 */ 460 for (i = 0; i < nitems(flash_devices); i++) 461 if (ofw_bus_is_compatible(dev, flash_devices[i].name)) 462 goto found; 463 464 return (ENXIO); 465 found: 466 #endif 467 device_set_desc(dev, "M25Pxx Flash Family"); 468 469 return (0); 470 } 471 472 static int 473 mx25l_attach(device_t dev) 474 { 475 struct mx25l_softc *sc; 476 struct mx25l_flash_ident *ident; 477 478 sc = device_get_softc(dev); 479 sc->sc_dev = dev; 480 M25PXX_LOCK_INIT(sc); 481 482 ident = mx25l_get_device_ident(sc); 483 if (ident == NULL) 484 return (ENXIO); 485 486 mx25l_wait_for_device_ready(sc->sc_dev); 487 488 sc->sc_disk = disk_alloc(); 489 sc->sc_disk->d_open = mx25l_open; 490 sc->sc_disk->d_close = mx25l_close; 491 sc->sc_disk->d_strategy = mx25l_strategy; 492 sc->sc_disk->d_getattr = mx25l_getattr; 493 sc->sc_disk->d_ioctl = mx25l_ioctl; 494 sc->sc_disk->d_name = "flash/spi"; 495 sc->sc_disk->d_drv1 = sc; 496 sc->sc_disk->d_maxsize = DFLTPHYS; 497 sc->sc_disk->d_sectorsize = MX25L_SECTORSIZE; 498 sc->sc_disk->d_mediasize = ident->sectorsize * ident->sectorcount; 499 sc->sc_disk->d_unit = device_get_unit(sc->sc_dev); 500 sc->sc_disk->d_dump = NULL; /* NB: no dumps */ 501 /* Sectorsize for erase operations */ 502 sc->sc_sectorsize = ident->sectorsize; 503 sc->sc_flags = ident->flags; 504 505 if (sc->sc_flags & FL_ENABLE_4B_ADDR) 506 mx25l_set_4b_mode(dev, CMD_ENTER_4B_MODE); 507 508 if (sc->sc_flags & FL_DISABLE_4B_ADDR) 509 mx25l_set_4b_mode(dev, CMD_EXIT_4B_MODE); 510 511 /* NB: use stripesize to hold the erase/region size for RedBoot */ 512 sc->sc_disk->d_stripesize = ident->sectorsize; 513 514 disk_create(sc->sc_disk, DISK_VERSION); 515 bioq_init(&sc->sc_bio_queue); 516 517 kproc_create(&mx25l_task, sc, &sc->sc_p, 0, 0, "task: mx25l flash"); 518 device_printf(sc->sc_dev, "%s, sector %d bytes, %d sectors\n", 519 ident->name, ident->sectorsize, ident->sectorcount); 520 521 return (0); 522 } 523 524 static int 525 mx25l_detach(device_t dev) 526 { 527 528 return (EIO); 529 } 530 531 static int 532 mx25l_open(struct disk *dp) 533 { 534 return (0); 535 } 536 537 static int 538 mx25l_close(struct disk *dp) 539 { 540 541 return (0); 542 } 543 544 static int 545 mx25l_ioctl(struct disk *dp, u_long cmd, void *data, int fflag, 546 struct thread *td) 547 { 548 549 return (EINVAL); 550 } 551 552 static void 553 mx25l_strategy(struct bio *bp) 554 { 555 struct mx25l_softc *sc; 556 557 sc = (struct mx25l_softc *)bp->bio_disk->d_drv1; 558 M25PXX_LOCK(sc); 559 bioq_disksort(&sc->sc_bio_queue, bp); 560 wakeup(sc); 561 M25PXX_UNLOCK(sc); 562 } 563 564 static int 565 mx25l_getattr(struct bio *bp) 566 { 567 struct mx25l_softc *sc; 568 device_t dev; 569 570 if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL) 571 return (ENXIO); 572 573 sc = bp->bio_disk->d_drv1; 574 dev = sc->sc_dev; 575 576 if (strcmp(bp->bio_attribute, "SPI::device") == 0) { 577 if (bp->bio_length != sizeof(dev)) 578 return (EFAULT); 579 bcopy(&dev, bp->bio_data, sizeof(dev)); 580 } else 581 return (-1); 582 return (0); 583 } 584 585 static void 586 mx25l_task(void *arg) 587 { 588 struct mx25l_softc *sc = (struct mx25l_softc*)arg; 589 struct bio *bp; 590 device_t dev; 591 592 for (;;) { 593 dev = sc->sc_dev; 594 M25PXX_LOCK(sc); 595 do { 596 bp = bioq_first(&sc->sc_bio_queue); 597 if (bp == NULL) 598 msleep(sc, &sc->sc_mtx, PRIBIO, "jobqueue", 0); 599 } while (bp == NULL); 600 bioq_remove(&sc->sc_bio_queue, bp); 601 M25PXX_UNLOCK(sc); 602 603 switch (bp->bio_cmd) { 604 case BIO_READ: 605 bp->bio_error = mx25l_read(dev, bp->bio_offset, 606 bp->bio_data, bp->bio_bcount); 607 break; 608 case BIO_WRITE: 609 bp->bio_error = mx25l_write(dev, bp->bio_offset, 610 bp->bio_data, bp->bio_bcount); 611 break; 612 default: 613 bp->bio_error = EINVAL; 614 } 615 616 617 biodone(bp); 618 } 619 } 620 621 static devclass_t mx25l_devclass; 622 623 static device_method_t mx25l_methods[] = { 624 /* Device interface */ 625 DEVMETHOD(device_probe, mx25l_probe), 626 DEVMETHOD(device_attach, mx25l_attach), 627 DEVMETHOD(device_detach, mx25l_detach), 628 629 { 0, 0 } 630 }; 631 632 static driver_t mx25l_driver = { 633 "mx25l", 634 mx25l_methods, 635 sizeof(struct mx25l_softc), 636 }; 637 638 DRIVER_MODULE(mx25l, spibus, mx25l_driver, mx25l_devclass, 0, 0); 639