altera_avgen.c (239674) | altera_avgen.c (245376) |
---|---|
1/*- | 1/*- |
2 * Copyright (c) 2012 Robert N. M. Watson | 2 * Copyright (c) 2012-2013 Robert N. M. Watson |
3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions --- 13 unchanged lines hidden (view full) --- 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> | 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions --- 13 unchanged lines hidden (view full) --- 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> |
32__FBSDID("$FreeBSD: head/sys/dev/altera/avgen/altera_avgen.c 239674 2012-08-25 11:07:43Z rwatson $"); | 32__FBSDID("$FreeBSD: head/sys/dev/altera/avgen/altera_avgen.c 245376 2013-01-13 16:43:59Z rwatson $"); |
33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/condvar.h> 37#include <sys/conf.h> 38#include <sys/kernel.h> 39#include <sys/lock.h> 40#include <sys/malloc.h> --- 180 unchanged lines hidden (view full) --- 221 rman_get_size(sc->avg_res) >= offset + PAGE_SIZE) { 222 *paddr = rman_get_start(sc->avg_res) + offset; 223 *memattr = VM_MEMATTR_UNCACHEABLE; 224 } else 225 return (ENODEV); 226 return (0); 227} 228 | 33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/condvar.h> 37#include <sys/conf.h> 38#include <sys/kernel.h> 39#include <sys/lock.h> 40#include <sys/malloc.h> --- 180 unchanged lines hidden (view full) --- 221 rman_get_size(sc->avg_res) >= offset + PAGE_SIZE) { 222 *paddr = rman_get_start(sc->avg_res) + offset; 223 *memattr = VM_MEMATTR_UNCACHEABLE; 224 } else 225 return (ENODEV); 226 return (0); 227} 228 |
229static int 230altera_avgen_nexus_probe(device_t dev) 231{ | |
232 | 229 |
233 device_set_desc(dev, "Generic Altera Avalon device attachment"); 234 return (BUS_PROBE_DEFAULT); 235} 236 | |
237static int 238altera_avgen_process_options(struct altera_avgen_softc *sc, 239 const char *str_fileio, const char *str_mmapio, const char *str_devname, 240 int devunit) 241{ 242 const char *cp; 243 device_t dev = sc->avg_dev; 244 --- 71 unchanged lines hidden (view full) --- 316 ALTERA_AVALON_STR_MMAPIO, *cp); 317 return (ENXIO); 318 } 319 } 320 } 321 return (0); 322} 323 | 230static int 231altera_avgen_process_options(struct altera_avgen_softc *sc, 232 const char *str_fileio, const char *str_mmapio, const char *str_devname, 233 int devunit) 234{ 235 const char *cp; 236 device_t dev = sc->avg_dev; 237 --- 71 unchanged lines hidden (view full) --- 309 ALTERA_AVALON_STR_MMAPIO, *cp); 310 return (ENXIO); 311 } 312 } 313 } 314 return (0); 315} 316 |
324static int 325altera_avgen_nexus_attach(device_t dev) | 317int 318altera_avgen_attach(struct altera_avgen_softc *sc, const char *str_fileio, 319 const char *str_mmapio, const char *str_devname, int devunit) |
326{ | 320{ |
327 struct altera_avgen_softc *sc; 328 const char *str_fileio, *str_mmapio; 329 const char *str_devname; | 321 device_t dev = sc->avg_dev; |
330 char devname[SPECNAMELEN + 1]; | 322 char devname[SPECNAMELEN + 1]; |
331 int devunit, error; | 323 int error; |
332 | 324 |
333 sc = device_get_softc(dev); 334 sc->avg_dev = dev; 335 sc->avg_unit = device_get_unit(dev); 336 337 /* 338 * Query non-standard hints to find out what operations are permitted 339 * on the device, and whether it is cached. 340 */ 341 str_fileio = NULL; 342 str_mmapio = NULL; 343 str_devname = NULL; 344 devunit = -1; 345 sc->avg_width = 1; 346 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 347 ALTERA_AVALON_STR_WIDTH, &sc->avg_width); 348 if (error != 0 && error != ENOENT) { 349 device_printf(dev, "invalid %s\n", ALTERA_AVALON_STR_WIDTH); 350 return (error); 351 } 352 (void)resource_string_value(device_get_name(dev), 353 device_get_unit(dev), ALTERA_AVALON_STR_FILEIO, &str_fileio); 354 (void)resource_string_value(device_get_name(dev), 355 device_get_unit(dev), ALTERA_AVALON_STR_MMAPIO, &str_mmapio); 356 (void)resource_string_value(device_get_name(dev), 357 device_get_unit(dev), ALTERA_AVALON_STR_DEVNAME, &str_devname); 358 (void)resource_int_value(device_get_name(dev), device_get_unit(dev), 359 ALTERA_AVALON_STR_DEVUNIT, &devunit); | |
360 error = altera_avgen_process_options(sc, str_fileio, str_mmapio, 361 str_devname, devunit); 362 if (error) 363 return (error); 364 365 /* Select a device name. */ 366 if (str_devname != NULL) { 367 if (devunit != -1) 368 (void)snprintf(devname, sizeof(devname), "%s%d", 369 str_devname, devunit); 370 else 371 (void)snprintf(devname, sizeof(devname), "%s", 372 str_devname); 373 } else 374 snprintf(devname, sizeof(devname), "%s%d", "avgen", 375 sc->avg_unit); 376 | 325 error = altera_avgen_process_options(sc, str_fileio, str_mmapio, 326 str_devname, devunit); 327 if (error) 328 return (error); 329 330 /* Select a device name. */ 331 if (str_devname != NULL) { 332 if (devunit != -1) 333 (void)snprintf(devname, sizeof(devname), "%s%d", 334 str_devname, devunit); 335 else 336 (void)snprintf(devname, sizeof(devname), "%s", 337 str_devname); 338 } else 339 snprintf(devname, sizeof(devname), "%s%d", "avgen", 340 sc->avg_unit); 341 |
377 /* Memory allocation and checking. */ 378 sc->avg_rid = 0; 379 sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 380 &sc->avg_rid, RF_ACTIVE); 381 if (sc->avg_res == NULL) { 382 device_printf(dev, "couldn't map memory\n"); 383 return (ENXIO); 384 } | |
385 if (rman_get_size(sc->avg_res) >= PAGE_SIZE || str_mmapio != NULL) { 386 if (rman_get_size(sc->avg_res) % PAGE_SIZE != 0) { 387 device_printf(dev, 388 "memory region not even multiple of page size\n"); | 342 if (rman_get_size(sc->avg_res) >= PAGE_SIZE || str_mmapio != NULL) { 343 if (rman_get_size(sc->avg_res) % PAGE_SIZE != 0) { 344 device_printf(dev, 345 "memory region not even multiple of page size\n"); |
389 error = ENXIO; 390 goto error; | 346 return (ENXIO); |
391 } 392 if (rman_get_start(sc->avg_res) % PAGE_SIZE != 0) { 393 device_printf(dev, "memory region not page-aligned\n"); | 347 } 348 if (rman_get_start(sc->avg_res) % PAGE_SIZE != 0) { 349 device_printf(dev, "memory region not page-aligned\n"); |
394 error = ENXIO; 395 goto error; | 350 return (ENXIO); |
396 } 397 } 398 399 /* Device node allocation. */ 400 if (str_devname == NULL) { 401 str_devname = "altera_avgen%d"; 402 devunit = sc->avg_unit; 403 } 404 if (devunit != -1) 405 sc->avg_cdev = make_dev(&avg_cdevsw, sc->avg_unit, UID_ROOT, 406 GID_WHEEL, S_IRUSR | S_IWUSR, str_devname, devunit); 407 else 408 sc->avg_cdev = make_dev(&avg_cdevsw, sc->avg_unit, UID_ROOT, 409 GID_WHEEL, S_IRUSR | S_IWUSR, str_devname); 410 if (sc->avg_cdev == NULL) { 411 device_printf(sc->avg_dev, "%s: make_dev failed\n", __func__); | 351 } 352 } 353 354 /* Device node allocation. */ 355 if (str_devname == NULL) { 356 str_devname = "altera_avgen%d"; 357 devunit = sc->avg_unit; 358 } 359 if (devunit != -1) 360 sc->avg_cdev = make_dev(&avg_cdevsw, sc->avg_unit, UID_ROOT, 361 GID_WHEEL, S_IRUSR | S_IWUSR, str_devname, devunit); 362 else 363 sc->avg_cdev = make_dev(&avg_cdevsw, sc->avg_unit, UID_ROOT, 364 GID_WHEEL, S_IRUSR | S_IWUSR, str_devname); 365 if (sc->avg_cdev == NULL) { 366 device_printf(sc->avg_dev, "%s: make_dev failed\n", __func__); |
412 error = ENXIO; 413 goto error; | 367 return (ENXIO); |
414 } 415 /* XXXRW: Slight race between make_dev(9) and here. */ 416 sc->avg_cdev->si_drv1 = sc; 417 return (0); | 368 } 369 /* XXXRW: Slight race between make_dev(9) and here. */ 370 sc->avg_cdev->si_drv1 = sc; 371 return (0); |
418 419error: 420 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); 421 return (error); | |
422} 423 | 372} 373 |
424static int 425altera_avgen_nexus_detach(device_t dev) | 374void 375altera_avgen_detach(struct altera_avgen_softc *sc) |
426{ | 376{ |
427 struct altera_avgen_softc *sc; | |
428 | 377 |
429 sc = device_get_softc(dev); | |
430 destroy_dev(sc->avg_cdev); | 378 destroy_dev(sc->avg_cdev); |
431 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); 432 return (0); | |
433} | 379} |
434 435static device_method_t altera_avgen_nexus_methods[] = { 436 DEVMETHOD(device_probe, altera_avgen_nexus_probe), 437 DEVMETHOD(device_attach, altera_avgen_nexus_attach), 438 DEVMETHOD(device_detach, altera_avgen_nexus_detach), 439 { 0, 0 } 440}; 441 442static driver_t altera_avgen_nexus_driver = { 443 "altera_avgen", 444 altera_avgen_nexus_methods, 445 sizeof(struct altera_avgen_softc), 446}; 447 448static devclass_t altera_avgen_devclass; 449 450DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, altera_avgen_devclass, 451 0, 0); | |