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 device_t sc_parent; 85 uint8_t sc_manufacturer_id; 86 uint16_t sc_device_id; 87 unsigned int sc_erasesize; 88 struct mtx sc_mtx; 89 struct disk *sc_disk; 90 struct proc *sc_p; 91 struct bio_queue_head sc_bio_queue; 92 unsigned int sc_flags; 93 unsigned int sc_taskstate; 94 uint8_t sc_dummybuf[FLASH_PAGE_SIZE]; 95 }; 96 97 #define TSTATE_STOPPED 0 98 #define TSTATE_STOPPING 1 99 #define TSTATE_RUNNING 2 100 101 #define M25PXX_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 102 #define M25PXX_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 103 #define M25PXX_LOCK_INIT(_sc) \ 104 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \ 105 "mx25l", MTX_DEF) 106 #define M25PXX_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx); 107 #define M25PXX_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED); 108 #define M25PXX_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED); 109 110 /* disk routines */ 111 static int mx25l_open(struct disk *dp); 112 static int mx25l_close(struct disk *dp); 113 static int mx25l_ioctl(struct disk *, u_long, void *, int, struct thread *); 114 static void mx25l_strategy(struct bio *bp); 115 static int mx25l_getattr(struct bio *bp); 116 static void mx25l_task(void *arg); 117 118 struct mx25l_flash_ident flash_devices[] = { 119 { "en25f32", 0x1c, 0x3116, 64 * 1024, 64, FL_NONE }, 120 { "en25p32", 0x1c, 0x2016, 64 * 1024, 64, FL_NONE }, 121 { "en25p64", 0x1c, 0x2017, 64 * 1024, 128, FL_NONE }, 122 { "en25q32", 0x1c, 0x3016, 64 * 1024, 64, FL_NONE }, 123 { "en25q64", 0x1c, 0x3017, 64 * 1024, 128, FL_ERASE_4K }, 124 { "m25p32", 0x20, 0x2016, 64 * 1024, 64, FL_NONE }, 125 { "m25p64", 0x20, 0x2017, 64 * 1024, 128, FL_NONE }, 126 { "mx25ll32", 0xc2, 0x2016, 64 * 1024, 64, FL_NONE }, 127 { "mx25ll64", 0xc2, 0x2017, 64 * 1024, 128, FL_NONE }, 128 { "mx25ll128", 0xc2, 0x2018, 64 * 1024, 256, FL_ERASE_4K | FL_ERASE_32K }, 129 { "mx25ll256", 0xc2, 0x2019, 64 * 1024, 512, FL_ERASE_4K | FL_ERASE_32K | FL_ENABLE_4B_ADDR }, 130 { "s25fl032", 0x01, 0x0215, 64 * 1024, 64, FL_NONE }, 131 { "s25fl064", 0x01, 0x0216, 64 * 1024, 128, FL_NONE }, 132 { "s25fl128", 0x01, 0x2018, 64 * 1024, 256, FL_NONE }, 133 { "s25fl256s", 0x01, 0x0219, 64 * 1024, 512, FL_NONE }, 134 { "SST25VF010A", 0xbf, 0x2549, 4 * 1024, 32, FL_ERASE_4K | FL_ERASE_32K }, 135 { "SST25VF032B", 0xbf, 0x254a, 64 * 1024, 64, FL_ERASE_4K | FL_ERASE_32K }, 136 137 /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ 138 { "w25x32", 0xef, 0x3016, 64 * 1024, 64, FL_ERASE_4K }, 139 { "w25x64", 0xef, 0x3017, 64 * 1024, 128, FL_ERASE_4K }, 140 { "w25q32", 0xef, 0x4016, 64 * 1024, 64, FL_ERASE_4K }, 141 { "w25q64", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 142 { "w25q64bv", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 143 { "w25q128", 0xef, 0x4018, 64 * 1024, 256, FL_ERASE_4K }, 144 { "w25q256", 0xef, 0x4019, 64 * 1024, 512, FL_ERASE_4K }, 145 146 /* Atmel */ 147 { "at25df641", 0x1f, 0x4800, 64 * 1024, 128, FL_ERASE_4K }, 148 149 /* GigaDevice */ 150 { "gd25q64", 0xc8, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 151 }; 152 153 static int 154 mx25l_wait_for_device_ready(struct mx25l_softc *sc) 155 { 156 uint8_t txBuf[2], rxBuf[2]; 157 struct spi_command cmd; 158 int err; 159 160 memset(&cmd, 0, sizeof(cmd)); 161 162 do { 163 txBuf[0] = CMD_READ_STATUS; 164 cmd.tx_cmd = txBuf; 165 cmd.rx_cmd = rxBuf; 166 cmd.rx_cmd_sz = 2; 167 cmd.tx_cmd_sz = 2; 168 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 169 } while (err == 0 && (rxBuf[1] & STATUS_WIP)); 170 171 return (err); 172 } 173 174 static struct mx25l_flash_ident* 175 mx25l_get_device_ident(struct mx25l_softc *sc) 176 { 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(sc->sc_parent, sc->sc_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; i < nitems(flash_devices); i++) { 204 if ((flash_devices[i].manufacturer_id == manufacturer_id) && 205 (flash_devices[i].device_id == dev_id)) 206 return &flash_devices[i]; 207 } 208 209 device_printf(sc->sc_dev, 210 "Unknown SPI flash device. Vendor: %02x, device id: %04x\n", 211 manufacturer_id, dev_id); 212 return (NULL); 213 } 214 215 static int 216 mx25l_set_writable(struct mx25l_softc *sc, 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(sc->sc_parent, sc->sc_dev, &cmd); 232 return (err); 233 } 234 235 static int 236 mx25l_erase_cmd(struct mx25l_softc *sc, off_t sector) 237 { 238 uint8_t txBuf[5], rxBuf[5]; 239 struct spi_command cmd; 240 int err; 241 242 if ((err = mx25l_set_writable(sc, 1)) != 0) 243 return (err); 244 245 memset(&cmd, 0, sizeof(cmd)); 246 memset(txBuf, 0, sizeof(txBuf)); 247 memset(rxBuf, 0, sizeof(rxBuf)); 248 249 cmd.tx_cmd = txBuf; 250 cmd.rx_cmd = rxBuf; 251 252 if (sc->sc_flags & FL_ERASE_4K) 253 txBuf[0] = CMD_BLOCK_4K_ERASE; 254 else if (sc->sc_flags & FL_ERASE_32K) 255 txBuf[0] = CMD_BLOCK_32K_ERASE; 256 else 257 txBuf[0] = CMD_SECTOR_ERASE; 258 259 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 260 cmd.rx_cmd_sz = 5; 261 cmd.tx_cmd_sz = 5; 262 txBuf[1] = ((sector >> 24) & 0xff); 263 txBuf[2] = ((sector >> 16) & 0xff); 264 txBuf[3] = ((sector >> 8) & 0xff); 265 txBuf[4] = (sector & 0xff); 266 } else { 267 cmd.rx_cmd_sz = 4; 268 cmd.tx_cmd_sz = 4; 269 txBuf[1] = ((sector >> 16) & 0xff); 270 txBuf[2] = ((sector >> 8) & 0xff); 271 txBuf[3] = (sector & 0xff); 272 } 273 if ((err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd)) != 0) 274 return (err); 275 err = mx25l_wait_for_device_ready(sc); 276 return (err); 277 } 278 279 static int 280 mx25l_write(struct mx25l_softc *sc, off_t offset, caddr_t data, off_t count) 281 { 282 uint8_t txBuf[8], rxBuf[8]; 283 struct spi_command cmd; 284 off_t bytes_to_write; 285 int err = 0; 286 287 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 288 cmd.tx_cmd_sz = 5; 289 cmd.rx_cmd_sz = 5; 290 } else { 291 cmd.tx_cmd_sz = 4; 292 cmd.rx_cmd_sz = 4; 293 } 294 295 /* 296 * Writes must be aligned to the erase sectorsize, since blocks are 297 * fully erased before they're written to. 298 */ 299 if (count % sc->sc_erasesize != 0 || offset % sc->sc_erasesize != 0) 300 return (EIO); 301 302 /* 303 * Maximum write size for CMD_PAGE_PROGRAM is FLASH_PAGE_SIZE, so loop 304 * to write chunks of FLASH_PAGE_SIZE bytes each. 305 */ 306 while (count != 0) { 307 /* If we crossed a sector boundary, erase the next sector. */ 308 if (((offset) % sc->sc_erasesize) == 0) { 309 err = mx25l_erase_cmd(sc, offset); 310 if (err) 311 break; 312 } 313 314 txBuf[0] = CMD_PAGE_PROGRAM; 315 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 316 txBuf[1] = (offset >> 24) & 0xff; 317 txBuf[2] = (offset >> 16) & 0xff; 318 txBuf[3] = (offset >> 8) & 0xff; 319 txBuf[4] = offset & 0xff; 320 } else { 321 txBuf[1] = (offset >> 16) & 0xff; 322 txBuf[2] = (offset >> 8) & 0xff; 323 txBuf[3] = offset & 0xff; 324 } 325 326 bytes_to_write = MIN(FLASH_PAGE_SIZE, count); 327 cmd.tx_cmd = txBuf; 328 cmd.rx_cmd = rxBuf; 329 cmd.tx_data = data; 330 cmd.rx_data = sc->sc_dummybuf; 331 cmd.tx_data_sz = (uint32_t)bytes_to_write; 332 cmd.rx_data_sz = (uint32_t)bytes_to_write; 333 334 /* 335 * Each completed write operation resets WEL (write enable 336 * latch) to disabled state, so we re-enable it here. 337 */ 338 if ((err = mx25l_wait_for_device_ready(sc)) != 0) 339 break; 340 if ((err = mx25l_set_writable(sc, 1)) != 0) 341 break; 342 343 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 344 if (err != 0) 345 break; 346 err = mx25l_wait_for_device_ready(sc); 347 if (err) 348 break; 349 350 data += bytes_to_write; 351 offset += bytes_to_write; 352 count -= bytes_to_write; 353 } 354 355 return (err); 356 } 357 358 static int 359 mx25l_read(struct mx25l_softc *sc, off_t offset, caddr_t data, off_t count) 360 { 361 uint8_t txBuf[8], rxBuf[8]; 362 struct spi_command cmd; 363 int err = 0; 364 365 /* 366 * Enforce that reads are aligned to the disk sectorsize, not the 367 * erase sectorsize. In this way, smaller read IO is possible, 368 * dramatically speeding up filesystem/geom_compress access. 369 */ 370 if (count % sc->sc_disk->d_sectorsize != 0 || 371 offset % sc->sc_disk->d_sectorsize != 0) 372 return (EIO); 373 374 txBuf[0] = CMD_FAST_READ; 375 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 376 cmd.tx_cmd_sz = 6; 377 cmd.rx_cmd_sz = 6; 378 379 txBuf[1] = (offset >> 24) & 0xff; 380 txBuf[2] = (offset >> 16) & 0xff; 381 txBuf[3] = (offset >> 8) & 0xff; 382 txBuf[4] = offset & 0xff; 383 /* Dummy byte */ 384 txBuf[5] = 0; 385 } else { 386 cmd.tx_cmd_sz = 5; 387 cmd.rx_cmd_sz = 5; 388 389 txBuf[1] = (offset >> 16) & 0xff; 390 txBuf[2] = (offset >> 8) & 0xff; 391 txBuf[3] = offset & 0xff; 392 /* Dummy byte */ 393 txBuf[4] = 0; 394 } 395 396 cmd.tx_cmd = txBuf; 397 cmd.rx_cmd = rxBuf; 398 cmd.tx_data = data; 399 cmd.rx_data = data; 400 cmd.tx_data_sz = count; 401 cmd.rx_data_sz = count; 402 403 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 404 return (err); 405 } 406 407 static int 408 mx25l_set_4b_mode(struct mx25l_softc *sc, uint8_t command) 409 { 410 uint8_t txBuf[1], rxBuf[1]; 411 struct spi_command cmd; 412 int err; 413 414 memset(&cmd, 0, sizeof(cmd)); 415 memset(txBuf, 0, sizeof(txBuf)); 416 memset(rxBuf, 0, sizeof(rxBuf)); 417 418 cmd.tx_cmd_sz = cmd.rx_cmd_sz = 1; 419 420 cmd.tx_cmd = txBuf; 421 cmd.rx_cmd = rxBuf; 422 423 txBuf[0] = command; 424 425 if ((err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd)) == 0) 426 err = mx25l_wait_for_device_ready(sc); 427 428 return (err); 429 } 430 431 #ifdef FDT 432 static struct ofw_compat_data compat_data[] = { 433 { "st,m25p", 1 }, 434 { "jedec,spi-nor", 1 }, 435 { NULL, 0 }, 436 }; 437 #endif 438 439 static int 440 mx25l_probe(device_t dev) 441 { 442 #ifdef FDT 443 int i; 444 445 if (!ofw_bus_status_okay(dev)) 446 return (ENXIO); 447 448 /* First try to match the compatible property to the compat_data */ 449 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 1) 450 goto found; 451 452 /* 453 * Next, try to find a compatible device using the names in the 454 * flash_devices structure 455 */ 456 for (i = 0; i < nitems(flash_devices); i++) 457 if (ofw_bus_is_compatible(dev, flash_devices[i].name)) 458 goto found; 459 460 return (ENXIO); 461 found: 462 #endif 463 device_set_desc(dev, "M25Pxx Flash Family"); 464 465 return (0); 466 } 467 468 static int 469 mx25l_attach(device_t dev) 470 { 471 struct mx25l_softc *sc; 472 struct mx25l_flash_ident *ident; 473 int err; 474 475 sc = device_get_softc(dev); 476 sc->sc_dev = dev; 477 sc->sc_parent = device_get_parent(sc->sc_dev); 478 479 M25PXX_LOCK_INIT(sc); 480 481 ident = mx25l_get_device_ident(sc); 482 if (ident == NULL) 483 return (ENXIO); 484 485 if ((err = mx25l_wait_for_device_ready(sc)) != 0) 486 return (err); 487 488 sc->sc_flags = ident->flags; 489 490 if (sc->sc_flags & FL_ERASE_4K) 491 sc->sc_erasesize = 4 * 1024; 492 else if (sc->sc_flags & FL_ERASE_32K) 493 sc->sc_erasesize = 32 * 1024; 494 else 495 sc->sc_erasesize = ident->sectorsize; 496 497 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 498 if ((err = mx25l_set_4b_mode(sc, CMD_ENTER_4B_MODE)) != 0) 499 return (err); 500 } else if (sc->sc_flags & FL_DISABLE_4B_ADDR) { 501 if ((err = mx25l_set_4b_mode(sc, CMD_EXIT_4B_MODE)) != 0) 502 return (err); 503 } 504 505 sc->sc_disk = disk_alloc(); 506 sc->sc_disk->d_open = mx25l_open; 507 sc->sc_disk->d_close = mx25l_close; 508 sc->sc_disk->d_strategy = mx25l_strategy; 509 sc->sc_disk->d_getattr = mx25l_getattr; 510 sc->sc_disk->d_ioctl = mx25l_ioctl; 511 sc->sc_disk->d_name = "flash/spi"; 512 sc->sc_disk->d_drv1 = sc; 513 sc->sc_disk->d_maxsize = DFLTPHYS; 514 sc->sc_disk->d_sectorsize = MX25L_SECTORSIZE; 515 sc->sc_disk->d_mediasize = ident->sectorsize * ident->sectorcount; 516 sc->sc_disk->d_stripesize = sc->sc_erasesize; 517 sc->sc_disk->d_unit = device_get_unit(sc->sc_dev); 518 sc->sc_disk->d_dump = NULL; /* NB: no dumps */ 519 520 disk_create(sc->sc_disk, DISK_VERSION); 521 bioq_init(&sc->sc_bio_queue); 522 523 kproc_create(&mx25l_task, sc, &sc->sc_p, 0, 0, "task: mx25l flash"); 524 sc->sc_taskstate = TSTATE_RUNNING; 525 526 device_printf(sc->sc_dev, "%s, sector %d bytes, %d sectors\n", 527 ident->name, ident->sectorsize, ident->sectorcount); 528 529 return (0); 530 } 531 532 static int 533 mx25l_detach(device_t dev) 534 { 535 struct mx25l_softc *sc; 536 int err; 537 538 sc = device_get_softc(dev); 539 err = 0; 540 541 M25PXX_LOCK(sc); 542 if (sc->sc_taskstate == TSTATE_RUNNING) { 543 sc->sc_taskstate = TSTATE_STOPPING; 544 wakeup(sc); 545 while (err == 0 && sc->sc_taskstate != TSTATE_STOPPED) { 546 err = msleep(sc, &sc->sc_mtx, 0, "mx25dt", hz * 3); 547 if (err != 0) { 548 sc->sc_taskstate = TSTATE_RUNNING; 549 device_printf(sc->sc_dev, 550 "Failed to stop queue task\n"); 551 } 552 } 553 } 554 M25PXX_UNLOCK(sc); 555 556 if (err == 0 && sc->sc_taskstate == TSTATE_STOPPED) { 557 disk_destroy(sc->sc_disk); 558 bioq_flush(&sc->sc_bio_queue, NULL, ENXIO); 559 M25PXX_LOCK_DESTROY(sc); 560 } 561 return (err); 562 } 563 564 static int 565 mx25l_open(struct disk *dp) 566 { 567 return (0); 568 } 569 570 static int 571 mx25l_close(struct disk *dp) 572 { 573 574 return (0); 575 } 576 577 static int 578 mx25l_ioctl(struct disk *dp, u_long cmd, void *data, int fflag, 579 struct thread *td) 580 { 581 582 return (EINVAL); 583 } 584 585 static void 586 mx25l_strategy(struct bio *bp) 587 { 588 struct mx25l_softc *sc; 589 590 sc = (struct mx25l_softc *)bp->bio_disk->d_drv1; 591 M25PXX_LOCK(sc); 592 bioq_disksort(&sc->sc_bio_queue, bp); 593 wakeup(sc); 594 M25PXX_UNLOCK(sc); 595 } 596 597 static int 598 mx25l_getattr(struct bio *bp) 599 { 600 struct mx25l_softc *sc; 601 device_t dev; 602 603 if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL) 604 return (ENXIO); 605 606 sc = bp->bio_disk->d_drv1; 607 dev = sc->sc_dev; 608 609 if (strcmp(bp->bio_attribute, "SPI::device") == 0) { 610 if (bp->bio_length != sizeof(dev)) 611 return (EFAULT); 612 bcopy(&dev, bp->bio_data, sizeof(dev)); 613 } else 614 return (-1); 615 return (0); 616 } 617 618 static void 619 mx25l_task(void *arg) 620 { 621 struct mx25l_softc *sc = (struct mx25l_softc*)arg; 622 struct bio *bp; 623 device_t dev; 624 625 for (;;) { 626 dev = sc->sc_dev; 627 M25PXX_LOCK(sc); 628 do { 629 if (sc->sc_taskstate == TSTATE_STOPPING) { 630 sc->sc_taskstate = TSTATE_STOPPED; 631 M25PXX_UNLOCK(sc); 632 wakeup(sc); 633 kproc_exit(0); 634 } 635 bp = bioq_first(&sc->sc_bio_queue); 636 if (bp == NULL) 637 msleep(sc, &sc->sc_mtx, PRIBIO, "mx25jq", 0); 638 } while (bp == NULL); 639 bioq_remove(&sc->sc_bio_queue, bp); 640 M25PXX_UNLOCK(sc); 641 642 switch (bp->bio_cmd) { 643 case BIO_READ: 644 bp->bio_error = mx25l_read(sc, bp->bio_offset, 645 bp->bio_data, bp->bio_bcount); 646 break; 647 case BIO_WRITE: 648 bp->bio_error = mx25l_write(sc, bp->bio_offset, 649 bp->bio_data, bp->bio_bcount); 650 break; 651 default: 652 bp->bio_error = EINVAL; 653 } 654 655 656 biodone(bp); 657 } 658 } 659 660 static devclass_t mx25l_devclass; 661 662 static device_method_t mx25l_methods[] = { 663 /* Device interface */ 664 DEVMETHOD(device_probe, mx25l_probe), 665 DEVMETHOD(device_attach, mx25l_attach), 666 DEVMETHOD(device_detach, mx25l_detach), 667 668 { 0, 0 } 669 }; 670 671 static driver_t mx25l_driver = { 672 "mx25l", 673 mx25l_methods, 674 sizeof(struct mx25l_softc), 675 }; 676 677 DRIVER_MODULE(mx25l, spibus, mx25l_driver, mx25l_devclass, 0, 0); 678 MODULE_DEPEND(mx25l, spibus, 1, 1, 1); 679