1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009 Oleksandr Tymoshenko. All rights reserved. 5 * Copyright (c) 2018 Ian Lepore. All rights reserved. 6 * Copyright (c) 2006 M. Warner Losh <imp@FreeBSD.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "opt_platform.h" 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/bio.h> 37 #include <sys/bus.h> 38 #include <sys/conf.h> 39 #include <sys/kernel.h> 40 #include <sys/kthread.h> 41 #include <sys/lock.h> 42 #include <sys/mbuf.h> 43 #include <sys/malloc.h> 44 #include <sys/module.h> 45 #include <sys/mutex.h> 46 #include <geom/geom_disk.h> 47 48 #ifdef FDT 49 #include <dev/fdt/fdt_common.h> 50 #include <dev/ofw/ofw_bus_subr.h> 51 #include <dev/ofw/openfirm.h> 52 #endif 53 54 #include <dev/spibus/spi.h> 55 #include "spibus_if.h" 56 57 #include <dev/flash/mx25lreg.h> 58 59 #define FL_NONE 0x00 60 #define FL_ERASE_4K 0x01 61 #define FL_ERASE_32K 0x02 62 #define FL_ENABLE_4B_ADDR 0x04 63 #define FL_DISABLE_4B_ADDR 0x08 64 65 /* 66 * Define the sectorsize to be a smaller size rather than the flash 67 * sector size. Trying to run FFS off of a 64k flash sector size 68 * results in a completely un-usable system. 69 */ 70 #define MX25L_SECTORSIZE 512 71 72 struct mx25l_flash_ident 73 { 74 const char *name; 75 uint8_t manufacturer_id; 76 uint16_t device_id; 77 unsigned int sectorsize; 78 unsigned int sectorcount; 79 unsigned int flags; 80 }; 81 82 struct mx25l_softc 83 { 84 device_t sc_dev; 85 device_t sc_parent; 86 uint8_t sc_manufacturer_id; 87 uint16_t sc_device_id; 88 unsigned int sc_erasesize; 89 struct mtx sc_mtx; 90 struct disk *sc_disk; 91 struct proc *sc_p; 92 struct bio_queue_head sc_bio_queue; 93 unsigned int sc_flags; 94 unsigned int sc_taskstate; 95 uint8_t sc_dummybuf[FLASH_PAGE_SIZE]; 96 }; 97 98 #define TSTATE_STOPPED 0 99 #define TSTATE_STOPPING 1 100 #define TSTATE_RUNNING 2 101 102 #define M25PXX_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 103 #define M25PXX_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 104 #define M25PXX_LOCK_INIT(_sc) \ 105 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \ 106 "mx25l", MTX_DEF) 107 #define M25PXX_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx); 108 #define M25PXX_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED); 109 #define M25PXX_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED); 110 111 /* disk routines */ 112 static int mx25l_open(struct disk *dp); 113 static int mx25l_close(struct disk *dp); 114 static int mx25l_ioctl(struct disk *, u_long, void *, int, struct thread *); 115 static void mx25l_strategy(struct bio *bp); 116 static int mx25l_getattr(struct bio *bp); 117 static void mx25l_task(void *arg); 118 119 static struct mx25l_flash_ident flash_devices[] = { 120 { "en25f32", 0x1c, 0x3116, 64 * 1024, 64, FL_NONE }, 121 { "en25p32", 0x1c, 0x2016, 64 * 1024, 64, FL_NONE }, 122 { "en25p64", 0x1c, 0x2017, 64 * 1024, 128, FL_NONE }, 123 { "en25q32", 0x1c, 0x3016, 64 * 1024, 64, FL_NONE }, 124 { "en25q64", 0x1c, 0x3017, 64 * 1024, 128, FL_ERASE_4K }, 125 { "m25p32", 0x20, 0x2016, 64 * 1024, 64, FL_NONE }, 126 { "m25p64", 0x20, 0x2017, 64 * 1024, 128, FL_NONE }, 127 { "mx25l1606e", 0xc2, 0x2015, 64 * 1024, 32, FL_ERASE_4K}, 128 { "mx25ll32", 0xc2, 0x2016, 64 * 1024, 64, FL_NONE }, 129 { "mx25ll64", 0xc2, 0x2017, 64 * 1024, 128, FL_NONE }, 130 { "mx25ll128", 0xc2, 0x2018, 64 * 1024, 256, FL_ERASE_4K | FL_ERASE_32K }, 131 { "mx25ll256", 0xc2, 0x2019, 64 * 1024, 512, FL_ERASE_4K | FL_ERASE_32K | FL_ENABLE_4B_ADDR }, 132 { "s25fl032", 0x01, 0x0215, 64 * 1024, 64, FL_NONE }, 133 { "s25fl064", 0x01, 0x0216, 64 * 1024, 128, FL_NONE }, 134 { "s25fl128", 0x01, 0x2018, 64 * 1024, 256, FL_NONE }, 135 { "s25fl256s", 0x01, 0x0219, 64 * 1024, 512, FL_NONE }, 136 { "s25fl512s", 0x01, 0x0220, 64 * 1024, 1024, FL_NONE }, 137 { "SST25VF010A", 0xbf, 0x2549, 4 * 1024, 32, FL_ERASE_4K | FL_ERASE_32K }, 138 { "SST25VF032B", 0xbf, 0x254a, 64 * 1024, 64, FL_ERASE_4K | FL_ERASE_32K }, 139 140 /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ 141 { "w25x32", 0xef, 0x3016, 64 * 1024, 64, FL_ERASE_4K }, 142 { "w25x64", 0xef, 0x3017, 64 * 1024, 128, FL_ERASE_4K }, 143 { "w25q32", 0xef, 0x4016, 64 * 1024, 64, FL_ERASE_4K }, 144 { "w25q64", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 145 { "w25q64bv", 0xef, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 146 { "w25q128", 0xef, 0x4018, 64 * 1024, 256, FL_ERASE_4K }, 147 { "w25q256", 0xef, 0x4019, 64 * 1024, 512, FL_ERASE_4K }, 148 149 /* Atmel */ 150 { "at25df641", 0x1f, 0x4800, 64 * 1024, 128, FL_ERASE_4K }, 151 152 /* GigaDevice */ 153 { "gd25q64", 0xc8, 0x4017, 64 * 1024, 128, FL_ERASE_4K }, 154 { "gd25q128", 0xc8, 0x4018, 64 * 1024, 256, FL_ERASE_4K }, 155 }; 156 157 static int 158 mx25l_wait_for_device_ready(struct mx25l_softc *sc) 159 { 160 uint8_t txBuf[2], rxBuf[2]; 161 struct spi_command cmd; 162 int err; 163 164 memset(&cmd, 0, sizeof(cmd)); 165 166 do { 167 txBuf[0] = CMD_READ_STATUS; 168 cmd.tx_cmd = txBuf; 169 cmd.rx_cmd = rxBuf; 170 cmd.rx_cmd_sz = 2; 171 cmd.tx_cmd_sz = 2; 172 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 173 } while (err == 0 && (rxBuf[1] & STATUS_WIP)); 174 175 return (err); 176 } 177 178 static struct mx25l_flash_ident* 179 mx25l_get_device_ident(struct mx25l_softc *sc) 180 { 181 uint8_t txBuf[8], rxBuf[8]; 182 struct spi_command cmd; 183 uint8_t manufacturer_id; 184 uint16_t dev_id; 185 int err, i; 186 187 memset(&cmd, 0, sizeof(cmd)); 188 memset(txBuf, 0, sizeof(txBuf)); 189 memset(rxBuf, 0, sizeof(rxBuf)); 190 191 txBuf[0] = CMD_READ_IDENT; 192 cmd.tx_cmd = &txBuf; 193 cmd.rx_cmd = &rxBuf; 194 /* 195 * Some compatible devices has extended two-bytes ID 196 * We'll use only manufacturer/deviceid atm 197 */ 198 cmd.tx_cmd_sz = 4; 199 cmd.rx_cmd_sz = 4; 200 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 201 if (err) 202 return (NULL); 203 204 manufacturer_id = rxBuf[1]; 205 dev_id = (rxBuf[2] << 8) | (rxBuf[3]); 206 207 for (i = 0; i < nitems(flash_devices); i++) { 208 if ((flash_devices[i].manufacturer_id == manufacturer_id) && 209 (flash_devices[i].device_id == dev_id)) 210 return &flash_devices[i]; 211 } 212 213 device_printf(sc->sc_dev, 214 "Unknown SPI flash device. Vendor: %02x, device id: %04x\n", 215 manufacturer_id, dev_id); 216 return (NULL); 217 } 218 219 static int 220 mx25l_set_writable(struct mx25l_softc *sc, int writable) 221 { 222 uint8_t txBuf[1], rxBuf[1]; 223 struct spi_command cmd; 224 int err; 225 226 memset(&cmd, 0, sizeof(cmd)); 227 memset(txBuf, 0, sizeof(txBuf)); 228 memset(rxBuf, 0, sizeof(rxBuf)); 229 230 txBuf[0] = writable ? CMD_WRITE_ENABLE : CMD_WRITE_DISABLE; 231 cmd.tx_cmd = txBuf; 232 cmd.rx_cmd = rxBuf; 233 cmd.rx_cmd_sz = 1; 234 cmd.tx_cmd_sz = 1; 235 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 236 return (err); 237 } 238 239 static int 240 mx25l_erase_cmd(struct mx25l_softc *sc, off_t sector) 241 { 242 uint8_t txBuf[5], rxBuf[5]; 243 struct spi_command cmd; 244 int err; 245 246 if ((err = mx25l_set_writable(sc, 1)) != 0) 247 return (err); 248 249 memset(&cmd, 0, sizeof(cmd)); 250 memset(txBuf, 0, sizeof(txBuf)); 251 memset(rxBuf, 0, sizeof(rxBuf)); 252 253 cmd.tx_cmd = txBuf; 254 cmd.rx_cmd = rxBuf; 255 256 if (sc->sc_flags & FL_ERASE_4K) 257 txBuf[0] = CMD_BLOCK_4K_ERASE; 258 else if (sc->sc_flags & FL_ERASE_32K) 259 txBuf[0] = CMD_BLOCK_32K_ERASE; 260 else 261 txBuf[0] = CMD_SECTOR_ERASE; 262 263 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 264 cmd.rx_cmd_sz = 5; 265 cmd.tx_cmd_sz = 5; 266 txBuf[1] = ((sector >> 24) & 0xff); 267 txBuf[2] = ((sector >> 16) & 0xff); 268 txBuf[3] = ((sector >> 8) & 0xff); 269 txBuf[4] = (sector & 0xff); 270 } else { 271 cmd.rx_cmd_sz = 4; 272 cmd.tx_cmd_sz = 4; 273 txBuf[1] = ((sector >> 16) & 0xff); 274 txBuf[2] = ((sector >> 8) & 0xff); 275 txBuf[3] = (sector & 0xff); 276 } 277 if ((err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd)) != 0) 278 return (err); 279 err = mx25l_wait_for_device_ready(sc); 280 return (err); 281 } 282 283 static int 284 mx25l_write(struct mx25l_softc *sc, off_t offset, caddr_t data, off_t count) 285 { 286 uint8_t txBuf[8], rxBuf[8]; 287 struct spi_command cmd; 288 off_t bytes_to_write; 289 int err = 0; 290 291 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 292 cmd.tx_cmd_sz = 5; 293 cmd.rx_cmd_sz = 5; 294 } else { 295 cmd.tx_cmd_sz = 4; 296 cmd.rx_cmd_sz = 4; 297 } 298 299 /* 300 * Writes must be aligned to the erase sectorsize, since blocks are 301 * fully erased before they're written to. 302 */ 303 if (count % sc->sc_erasesize != 0 || offset % sc->sc_erasesize != 0) 304 return (EIO); 305 306 /* 307 * Maximum write size for CMD_PAGE_PROGRAM is FLASH_PAGE_SIZE, so loop 308 * to write chunks of FLASH_PAGE_SIZE bytes each. 309 */ 310 while (count != 0) { 311 /* If we crossed a sector boundary, erase the next sector. */ 312 if (((offset) % sc->sc_erasesize) == 0) { 313 err = mx25l_erase_cmd(sc, offset); 314 if (err) 315 break; 316 } 317 318 txBuf[0] = CMD_PAGE_PROGRAM; 319 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 320 txBuf[1] = (offset >> 24) & 0xff; 321 txBuf[2] = (offset >> 16) & 0xff; 322 txBuf[3] = (offset >> 8) & 0xff; 323 txBuf[4] = offset & 0xff; 324 } else { 325 txBuf[1] = (offset >> 16) & 0xff; 326 txBuf[2] = (offset >> 8) & 0xff; 327 txBuf[3] = offset & 0xff; 328 } 329 330 bytes_to_write = MIN(FLASH_PAGE_SIZE, count); 331 cmd.tx_cmd = txBuf; 332 cmd.rx_cmd = rxBuf; 333 cmd.tx_data = data; 334 cmd.rx_data = sc->sc_dummybuf; 335 cmd.tx_data_sz = (uint32_t)bytes_to_write; 336 cmd.rx_data_sz = (uint32_t)bytes_to_write; 337 338 /* 339 * Each completed write operation resets WEL (write enable 340 * latch) to disabled state, so we re-enable it here. 341 */ 342 if ((err = mx25l_wait_for_device_ready(sc)) != 0) 343 break; 344 if ((err = mx25l_set_writable(sc, 1)) != 0) 345 break; 346 347 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 348 if (err != 0) 349 break; 350 err = mx25l_wait_for_device_ready(sc); 351 if (err) 352 break; 353 354 data += bytes_to_write; 355 offset += bytes_to_write; 356 count -= bytes_to_write; 357 } 358 359 return (err); 360 } 361 362 static int 363 mx25l_read(struct mx25l_softc *sc, off_t offset, caddr_t data, off_t count) 364 { 365 uint8_t txBuf[8], rxBuf[8]; 366 struct spi_command cmd; 367 int err = 0; 368 369 /* 370 * Enforce that reads are aligned to the disk sectorsize, not the 371 * erase sectorsize. In this way, smaller read IO is possible, 372 * dramatically speeding up filesystem/geom_compress access. 373 */ 374 if (count % sc->sc_disk->d_sectorsize != 0 || 375 offset % sc->sc_disk->d_sectorsize != 0) 376 return (EIO); 377 378 txBuf[0] = CMD_FAST_READ; 379 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 380 cmd.tx_cmd_sz = 6; 381 cmd.rx_cmd_sz = 6; 382 383 txBuf[1] = (offset >> 24) & 0xff; 384 txBuf[2] = (offset >> 16) & 0xff; 385 txBuf[3] = (offset >> 8) & 0xff; 386 txBuf[4] = offset & 0xff; 387 /* Dummy byte */ 388 txBuf[5] = 0; 389 } else { 390 cmd.tx_cmd_sz = 5; 391 cmd.rx_cmd_sz = 5; 392 393 txBuf[1] = (offset >> 16) & 0xff; 394 txBuf[2] = (offset >> 8) & 0xff; 395 txBuf[3] = offset & 0xff; 396 /* Dummy byte */ 397 txBuf[4] = 0; 398 } 399 400 cmd.tx_cmd = txBuf; 401 cmd.rx_cmd = rxBuf; 402 cmd.tx_data = data; 403 cmd.rx_data = data; 404 cmd.tx_data_sz = count; 405 cmd.rx_data_sz = count; 406 407 err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd); 408 return (err); 409 } 410 411 static int 412 mx25l_set_4b_mode(struct mx25l_softc *sc, uint8_t command) 413 { 414 uint8_t txBuf[1], rxBuf[1]; 415 struct spi_command cmd; 416 int err; 417 418 memset(&cmd, 0, sizeof(cmd)); 419 memset(txBuf, 0, sizeof(txBuf)); 420 memset(rxBuf, 0, sizeof(rxBuf)); 421 422 cmd.tx_cmd_sz = cmd.rx_cmd_sz = 1; 423 424 cmd.tx_cmd = txBuf; 425 cmd.rx_cmd = rxBuf; 426 427 txBuf[0] = command; 428 429 if ((err = SPIBUS_TRANSFER(sc->sc_parent, sc->sc_dev, &cmd)) == 0) 430 err = mx25l_wait_for_device_ready(sc); 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 int err; 478 479 sc = device_get_softc(dev); 480 sc->sc_dev = dev; 481 sc->sc_parent = device_get_parent(sc->sc_dev); 482 483 M25PXX_LOCK_INIT(sc); 484 485 ident = mx25l_get_device_ident(sc); 486 if (ident == NULL) 487 return (ENXIO); 488 489 if ((err = mx25l_wait_for_device_ready(sc)) != 0) 490 return (err); 491 492 sc->sc_flags = ident->flags; 493 494 if (sc->sc_flags & FL_ERASE_4K) 495 sc->sc_erasesize = 4 * 1024; 496 else if (sc->sc_flags & FL_ERASE_32K) 497 sc->sc_erasesize = 32 * 1024; 498 else 499 sc->sc_erasesize = ident->sectorsize; 500 501 if (sc->sc_flags & FL_ENABLE_4B_ADDR) { 502 if ((err = mx25l_set_4b_mode(sc, CMD_ENTER_4B_MODE)) != 0) 503 return (err); 504 } else if (sc->sc_flags & FL_DISABLE_4B_ADDR) { 505 if ((err = mx25l_set_4b_mode(sc, CMD_EXIT_4B_MODE)) != 0) 506 return (err); 507 } 508 509 sc->sc_disk = disk_alloc(); 510 sc->sc_disk->d_open = mx25l_open; 511 sc->sc_disk->d_close = mx25l_close; 512 sc->sc_disk->d_strategy = mx25l_strategy; 513 sc->sc_disk->d_getattr = mx25l_getattr; 514 sc->sc_disk->d_ioctl = mx25l_ioctl; 515 sc->sc_disk->d_name = "flash/spi"; 516 sc->sc_disk->d_drv1 = sc; 517 sc->sc_disk->d_maxsize = DFLTPHYS; 518 sc->sc_disk->d_sectorsize = MX25L_SECTORSIZE; 519 sc->sc_disk->d_mediasize = ident->sectorsize * ident->sectorcount; 520 sc->sc_disk->d_stripesize = sc->sc_erasesize; 521 sc->sc_disk->d_unit = device_get_unit(sc->sc_dev); 522 sc->sc_disk->d_dump = NULL; /* NB: no dumps */ 523 strlcpy(sc->sc_disk->d_descr, ident->name, 524 sizeof(sc->sc_disk->d_descr)); 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 sc->sc_taskstate = TSTATE_RUNNING; 531 532 device_printf(sc->sc_dev, 533 "device type %s, size %dK in %d sectors of %dK, erase size %dK\n", 534 ident->name, 535 ident->sectorcount * ident->sectorsize / 1024, 536 ident->sectorcount, ident->sectorsize / 1024, 537 sc->sc_erasesize / 1024); 538 539 return (0); 540 } 541 542 static int 543 mx25l_detach(device_t dev) 544 { 545 struct mx25l_softc *sc; 546 int err; 547 548 sc = device_get_softc(dev); 549 err = 0; 550 551 M25PXX_LOCK(sc); 552 if (sc->sc_taskstate == TSTATE_RUNNING) { 553 sc->sc_taskstate = TSTATE_STOPPING; 554 wakeup(sc); 555 while (err == 0 && sc->sc_taskstate != TSTATE_STOPPED) { 556 err = msleep(sc, &sc->sc_mtx, 0, "mx25dt", hz * 3); 557 if (err != 0) { 558 sc->sc_taskstate = TSTATE_RUNNING; 559 device_printf(sc->sc_dev, 560 "Failed to stop queue task\n"); 561 } 562 } 563 } 564 M25PXX_UNLOCK(sc); 565 566 if (err == 0 && sc->sc_taskstate == TSTATE_STOPPED) { 567 disk_destroy(sc->sc_disk); 568 bioq_flush(&sc->sc_bio_queue, NULL, ENXIO); 569 M25PXX_LOCK_DESTROY(sc); 570 } 571 return (err); 572 } 573 574 static int 575 mx25l_open(struct disk *dp) 576 { 577 return (0); 578 } 579 580 static int 581 mx25l_close(struct disk *dp) 582 { 583 584 return (0); 585 } 586 587 static int 588 mx25l_ioctl(struct disk *dp, u_long cmd, void *data, int fflag, 589 struct thread *td) 590 { 591 592 return (EINVAL); 593 } 594 595 static void 596 mx25l_strategy(struct bio *bp) 597 { 598 struct mx25l_softc *sc; 599 600 sc = (struct mx25l_softc *)bp->bio_disk->d_drv1; 601 M25PXX_LOCK(sc); 602 bioq_disksort(&sc->sc_bio_queue, bp); 603 wakeup(sc); 604 M25PXX_UNLOCK(sc); 605 } 606 607 static int 608 mx25l_getattr(struct bio *bp) 609 { 610 struct mx25l_softc *sc; 611 device_t dev; 612 613 if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL) 614 return (ENXIO); 615 616 sc = bp->bio_disk->d_drv1; 617 dev = sc->sc_dev; 618 619 if (strcmp(bp->bio_attribute, "SPI::device") == 0) { 620 if (bp->bio_length != sizeof(dev)) 621 return (EFAULT); 622 bcopy(&dev, bp->bio_data, sizeof(dev)); 623 } else 624 return (-1); 625 return (0); 626 } 627 628 static void 629 mx25l_task(void *arg) 630 { 631 struct mx25l_softc *sc = (struct mx25l_softc*)arg; 632 struct bio *bp; 633 device_t dev; 634 635 for (;;) { 636 dev = sc->sc_dev; 637 M25PXX_LOCK(sc); 638 do { 639 if (sc->sc_taskstate == TSTATE_STOPPING) { 640 sc->sc_taskstate = TSTATE_STOPPED; 641 M25PXX_UNLOCK(sc); 642 wakeup(sc); 643 kproc_exit(0); 644 } 645 bp = bioq_first(&sc->sc_bio_queue); 646 if (bp == NULL) 647 msleep(sc, &sc->sc_mtx, PRIBIO, "mx25jq", 0); 648 } while (bp == NULL); 649 bioq_remove(&sc->sc_bio_queue, bp); 650 M25PXX_UNLOCK(sc); 651 652 switch (bp->bio_cmd) { 653 case BIO_READ: 654 bp->bio_error = mx25l_read(sc, bp->bio_offset, 655 bp->bio_data, bp->bio_bcount); 656 break; 657 case BIO_WRITE: 658 bp->bio_error = mx25l_write(sc, bp->bio_offset, 659 bp->bio_data, bp->bio_bcount); 660 break; 661 default: 662 bp->bio_error = EOPNOTSUPP; 663 } 664 665 666 biodone(bp); 667 } 668 } 669 670 static devclass_t mx25l_devclass; 671 672 static device_method_t mx25l_methods[] = { 673 /* Device interface */ 674 DEVMETHOD(device_probe, mx25l_probe), 675 DEVMETHOD(device_attach, mx25l_attach), 676 DEVMETHOD(device_detach, mx25l_detach), 677 678 { 0, 0 } 679 }; 680 681 static driver_t mx25l_driver = { 682 "mx25l", 683 mx25l_methods, 684 sizeof(struct mx25l_softc), 685 }; 686 687 DRIVER_MODULE(mx25l, spibus, mx25l_driver, mx25l_devclass, 0, 0); 688 MODULE_DEPEND(mx25l, spibus, 1, 1, 1); 689 #ifdef FDT 690 MODULE_DEPEND(mx25l, fdt_slicer, 1, 1, 1); 691 SPIBUS_FDT_PNP_INFO(compat_data); 692 #endif 693