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7c673cae FG |
1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. | |
5 | * 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 | * | |
11 | * * Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * * Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in | |
15 | * the documentation and/or other materials provided with the | |
16 | * distribution. | |
17 | * * Neither the name of Intel Corporation nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #include <string.h> | |
35 | #include <unistd.h> | |
36 | #include <fcntl.h> | |
37 | #include <dirent.h> | |
38 | #include <inttypes.h> | |
39 | #include <sys/stat.h> | |
40 | #include <sys/mman.h> | |
11fdf7f2 | 41 | #include <sys/sysmacros.h> |
7c673cae FG |
42 | #include <linux/pci_regs.h> |
43 | ||
44 | #if defined(RTE_ARCH_X86) | |
45 | #include <sys/io.h> | |
46 | #endif | |
47 | ||
48 | #include <rte_log.h> | |
49 | #include <rte_pci.h> | |
50 | #include <rte_eal_memconfig.h> | |
51 | #include <rte_common.h> | |
52 | #include <rte_malloc.h> | |
53 | ||
54 | #include "eal_filesystem.h" | |
55 | #include "eal_pci_init.h" | |
56 | ||
57 | void *pci_map_addr = NULL; | |
58 | ||
59 | #define OFF_MAX ((uint64_t)(off_t)-1) | |
60 | ||
61 | int | |
62 | pci_uio_read_config(const struct rte_intr_handle *intr_handle, | |
63 | void *buf, size_t len, off_t offset) | |
64 | { | |
65 | return pread(intr_handle->uio_cfg_fd, buf, len, offset); | |
66 | } | |
67 | ||
68 | int | |
69 | pci_uio_write_config(const struct rte_intr_handle *intr_handle, | |
70 | const void *buf, size_t len, off_t offset) | |
71 | { | |
72 | return pwrite(intr_handle->uio_cfg_fd, buf, len, offset); | |
73 | } | |
74 | ||
75 | static int | |
76 | pci_uio_set_bus_master(int dev_fd) | |
77 | { | |
78 | uint16_t reg; | |
79 | int ret; | |
80 | ||
81 | ret = pread(dev_fd, ®, sizeof(reg), PCI_COMMAND); | |
82 | if (ret != sizeof(reg)) { | |
83 | RTE_LOG(ERR, EAL, | |
84 | "Cannot read command from PCI config space!\n"); | |
85 | return -1; | |
86 | } | |
87 | ||
88 | /* return if bus mastering is already on */ | |
89 | if (reg & PCI_COMMAND_MASTER) | |
90 | return 0; | |
91 | ||
92 | reg |= PCI_COMMAND_MASTER; | |
93 | ||
94 | ret = pwrite(dev_fd, ®, sizeof(reg), PCI_COMMAND); | |
95 | if (ret != sizeof(reg)) { | |
96 | RTE_LOG(ERR, EAL, | |
97 | "Cannot write command to PCI config space!\n"); | |
98 | return -1; | |
99 | } | |
100 | ||
101 | return 0; | |
102 | } | |
103 | ||
104 | static int | |
105 | pci_mknod_uio_dev(const char *sysfs_uio_path, unsigned uio_num) | |
106 | { | |
107 | FILE *f; | |
108 | char filename[PATH_MAX]; | |
109 | int ret; | |
110 | unsigned major, minor; | |
111 | dev_t dev; | |
112 | ||
113 | /* get the name of the sysfs file that contains the major and minor | |
114 | * of the uio device and read its content */ | |
115 | snprintf(filename, sizeof(filename), "%s/dev", sysfs_uio_path); | |
116 | ||
117 | f = fopen(filename, "r"); | |
118 | if (f == NULL) { | |
119 | RTE_LOG(ERR, EAL, "%s(): cannot open sysfs to get major:minor\n", | |
120 | __func__); | |
121 | return -1; | |
122 | } | |
123 | ||
124 | ret = fscanf(f, "%u:%u", &major, &minor); | |
125 | if (ret != 2) { | |
126 | RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs to get major:minor\n", | |
127 | __func__); | |
128 | fclose(f); | |
129 | return -1; | |
130 | } | |
131 | fclose(f); | |
132 | ||
133 | /* create the char device "mknod /dev/uioX c major minor" */ | |
134 | snprintf(filename, sizeof(filename), "/dev/uio%u", uio_num); | |
135 | dev = makedev(major, minor); | |
136 | ret = mknod(filename, S_IFCHR | S_IRUSR | S_IWUSR, dev); | |
11fdf7f2 | 137 | if (ret != 0) { |
7c673cae FG |
138 | RTE_LOG(ERR, EAL, "%s(): mknod() failed %s\n", |
139 | __func__, strerror(errno)); | |
140 | return -1; | |
141 | } | |
142 | ||
143 | return ret; | |
144 | } | |
145 | ||
146 | /* | |
147 | * Return the uioX char device used for a pci device. On success, return | |
148 | * the UIO number and fill dstbuf string with the path of the device in | |
149 | * sysfs. On error, return a negative value. In this case dstbuf is | |
150 | * invalid. | |
151 | */ | |
152 | static int | |
153 | pci_get_uio_dev(struct rte_pci_device *dev, char *dstbuf, | |
154 | unsigned int buflen, int create) | |
155 | { | |
156 | struct rte_pci_addr *loc = &dev->addr; | |
157 | unsigned int uio_num; | |
158 | struct dirent *e; | |
159 | DIR *dir; | |
160 | char dirname[PATH_MAX]; | |
161 | ||
162 | /* depending on kernel version, uio can be located in uio/uioX | |
163 | * or uio:uioX */ | |
164 | ||
165 | snprintf(dirname, sizeof(dirname), | |
166 | "%s/" PCI_PRI_FMT "/uio", pci_get_sysfs_path(), | |
167 | loc->domain, loc->bus, loc->devid, loc->function); | |
168 | ||
169 | dir = opendir(dirname); | |
170 | if (dir == NULL) { | |
171 | /* retry with the parent directory */ | |
172 | snprintf(dirname, sizeof(dirname), | |
173 | "%s/" PCI_PRI_FMT, pci_get_sysfs_path(), | |
174 | loc->domain, loc->bus, loc->devid, loc->function); | |
175 | dir = opendir(dirname); | |
176 | ||
177 | if (dir == NULL) { | |
178 | RTE_LOG(ERR, EAL, "Cannot opendir %s\n", dirname); | |
179 | return -1; | |
180 | } | |
181 | } | |
182 | ||
183 | /* take the first file starting with "uio" */ | |
184 | while ((e = readdir(dir)) != NULL) { | |
185 | /* format could be uio%d ...*/ | |
186 | int shortprefix_len = sizeof("uio") - 1; | |
187 | /* ... or uio:uio%d */ | |
188 | int longprefix_len = sizeof("uio:uio") - 1; | |
189 | char *endptr; | |
190 | ||
191 | if (strncmp(e->d_name, "uio", 3) != 0) | |
192 | continue; | |
193 | ||
194 | /* first try uio%d */ | |
195 | errno = 0; | |
196 | uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10); | |
197 | if (errno == 0 && endptr != (e->d_name + shortprefix_len)) { | |
198 | snprintf(dstbuf, buflen, "%s/uio%u", dirname, uio_num); | |
199 | break; | |
200 | } | |
201 | ||
202 | /* then try uio:uio%d */ | |
203 | errno = 0; | |
204 | uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10); | |
205 | if (errno == 0 && endptr != (e->d_name + longprefix_len)) { | |
206 | snprintf(dstbuf, buflen, "%s/uio:uio%u", dirname, uio_num); | |
207 | break; | |
208 | } | |
209 | } | |
210 | closedir(dir); | |
211 | ||
212 | /* No uio resource found */ | |
213 | if (e == NULL) | |
214 | return -1; | |
215 | ||
216 | /* create uio device if we've been asked to */ | |
217 | if (internal_config.create_uio_dev && create && | |
218 | pci_mknod_uio_dev(dstbuf, uio_num) < 0) | |
219 | RTE_LOG(WARNING, EAL, "Cannot create /dev/uio%u\n", uio_num); | |
220 | ||
221 | return uio_num; | |
222 | } | |
223 | ||
224 | void | |
225 | pci_uio_free_resource(struct rte_pci_device *dev, | |
226 | struct mapped_pci_resource *uio_res) | |
227 | { | |
228 | rte_free(uio_res); | |
229 | ||
230 | if (dev->intr_handle.uio_cfg_fd >= 0) { | |
231 | close(dev->intr_handle.uio_cfg_fd); | |
232 | dev->intr_handle.uio_cfg_fd = -1; | |
233 | } | |
11fdf7f2 | 234 | if (dev->intr_handle.fd >= 0) { |
7c673cae FG |
235 | close(dev->intr_handle.fd); |
236 | dev->intr_handle.fd = -1; | |
237 | dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; | |
238 | } | |
239 | } | |
240 | ||
241 | int | |
242 | pci_uio_alloc_resource(struct rte_pci_device *dev, | |
243 | struct mapped_pci_resource **uio_res) | |
244 | { | |
245 | char dirname[PATH_MAX]; | |
246 | char cfgname[PATH_MAX]; | |
247 | char devname[PATH_MAX]; /* contains the /dev/uioX */ | |
248 | int uio_num; | |
249 | struct rte_pci_addr *loc; | |
250 | ||
251 | loc = &dev->addr; | |
252 | ||
253 | /* find uio resource */ | |
254 | uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname), 1); | |
255 | if (uio_num < 0) { | |
256 | RTE_LOG(WARNING, EAL, " "PCI_PRI_FMT" not managed by UIO driver, " | |
257 | "skipping\n", loc->domain, loc->bus, loc->devid, loc->function); | |
258 | return 1; | |
259 | } | |
260 | snprintf(devname, sizeof(devname), "/dev/uio%u", uio_num); | |
261 | ||
262 | /* save fd if in primary process */ | |
263 | dev->intr_handle.fd = open(devname, O_RDWR); | |
264 | if (dev->intr_handle.fd < 0) { | |
265 | RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", | |
266 | devname, strerror(errno)); | |
267 | goto error; | |
268 | } | |
269 | ||
270 | snprintf(cfgname, sizeof(cfgname), | |
271 | "/sys/class/uio/uio%u/device/config", uio_num); | |
272 | dev->intr_handle.uio_cfg_fd = open(cfgname, O_RDWR); | |
273 | if (dev->intr_handle.uio_cfg_fd < 0) { | |
274 | RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", | |
275 | cfgname, strerror(errno)); | |
276 | goto error; | |
277 | } | |
278 | ||
279 | if (dev->kdrv == RTE_KDRV_IGB_UIO) | |
280 | dev->intr_handle.type = RTE_INTR_HANDLE_UIO; | |
281 | else { | |
282 | dev->intr_handle.type = RTE_INTR_HANDLE_UIO_INTX; | |
283 | ||
284 | /* set bus master that is not done by uio_pci_generic */ | |
285 | if (pci_uio_set_bus_master(dev->intr_handle.uio_cfg_fd)) { | |
286 | RTE_LOG(ERR, EAL, "Cannot set up bus mastering!\n"); | |
287 | goto error; | |
288 | } | |
289 | } | |
290 | ||
291 | /* allocate the mapping details for secondary processes*/ | |
292 | *uio_res = rte_zmalloc("UIO_RES", sizeof(**uio_res), 0); | |
293 | if (*uio_res == NULL) { | |
294 | RTE_LOG(ERR, EAL, | |
295 | "%s(): cannot store uio mmap details\n", __func__); | |
296 | goto error; | |
297 | } | |
298 | ||
299 | snprintf((*uio_res)->path, sizeof((*uio_res)->path), "%s", devname); | |
300 | memcpy(&(*uio_res)->pci_addr, &dev->addr, sizeof((*uio_res)->pci_addr)); | |
301 | ||
302 | return 0; | |
303 | ||
304 | error: | |
305 | pci_uio_free_resource(dev, *uio_res); | |
306 | return -1; | |
307 | } | |
308 | ||
309 | int | |
310 | pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx, | |
311 | struct mapped_pci_resource *uio_res, int map_idx) | |
312 | { | |
313 | int fd; | |
314 | char devname[PATH_MAX]; | |
315 | void *mapaddr; | |
316 | struct rte_pci_addr *loc; | |
317 | struct pci_map *maps; | |
318 | ||
319 | loc = &dev->addr; | |
320 | maps = uio_res->maps; | |
321 | ||
322 | /* update devname for mmap */ | |
323 | snprintf(devname, sizeof(devname), | |
324 | "%s/" PCI_PRI_FMT "/resource%d", | |
325 | pci_get_sysfs_path(), | |
326 | loc->domain, loc->bus, loc->devid, | |
327 | loc->function, res_idx); | |
328 | ||
329 | /* allocate memory to keep path */ | |
330 | maps[map_idx].path = rte_malloc(NULL, strlen(devname) + 1, 0); | |
331 | if (maps[map_idx].path == NULL) { | |
332 | RTE_LOG(ERR, EAL, "Cannot allocate memory for path: %s\n", | |
333 | strerror(errno)); | |
334 | return -1; | |
335 | } | |
336 | ||
337 | /* | |
338 | * open resource file, to mmap it | |
339 | */ | |
340 | fd = open(devname, O_RDWR); | |
341 | if (fd < 0) { | |
342 | RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", | |
343 | devname, strerror(errno)); | |
344 | goto error; | |
345 | } | |
346 | ||
347 | /* try mapping somewhere close to the end of hugepages */ | |
348 | if (pci_map_addr == NULL) | |
349 | pci_map_addr = pci_find_max_end_va(); | |
350 | ||
351 | mapaddr = pci_map_resource(pci_map_addr, fd, 0, | |
352 | (size_t)dev->mem_resource[res_idx].len, 0); | |
353 | close(fd); | |
354 | if (mapaddr == MAP_FAILED) | |
355 | goto error; | |
356 | ||
357 | pci_map_addr = RTE_PTR_ADD(mapaddr, | |
358 | (size_t)dev->mem_resource[res_idx].len); | |
359 | ||
360 | maps[map_idx].phaddr = dev->mem_resource[res_idx].phys_addr; | |
361 | maps[map_idx].size = dev->mem_resource[res_idx].len; | |
362 | maps[map_idx].addr = mapaddr; | |
363 | maps[map_idx].offset = 0; | |
364 | strcpy(maps[map_idx].path, devname); | |
365 | dev->mem_resource[res_idx].addr = mapaddr; | |
366 | ||
367 | return 0; | |
368 | ||
369 | error: | |
370 | rte_free(maps[map_idx].path); | |
371 | return -1; | |
372 | } | |
373 | ||
374 | #if defined(RTE_ARCH_X86) | |
375 | int | |
376 | pci_uio_ioport_map(struct rte_pci_device *dev, int bar, | |
377 | struct rte_pci_ioport *p) | |
378 | { | |
379 | char dirname[PATH_MAX]; | |
380 | char filename[PATH_MAX]; | |
381 | int uio_num; | |
382 | unsigned long start; | |
383 | ||
384 | uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname), 0); | |
385 | if (uio_num < 0) | |
386 | return -1; | |
387 | ||
388 | /* get portio start */ | |
389 | snprintf(filename, sizeof(filename), | |
390 | "%s/portio/port%d/start", dirname, bar); | |
391 | if (eal_parse_sysfs_value(filename, &start) < 0) { | |
392 | RTE_LOG(ERR, EAL, "%s(): cannot parse portio start\n", | |
393 | __func__); | |
394 | return -1; | |
395 | } | |
396 | /* ensure we don't get anything funny here, read/write will cast to | |
397 | * uin16_t */ | |
398 | if (start > UINT16_MAX) | |
399 | return -1; | |
400 | ||
401 | /* FIXME only for primary process ? */ | |
402 | if (dev->intr_handle.type == RTE_INTR_HANDLE_UNKNOWN) { | |
403 | ||
404 | snprintf(filename, sizeof(filename), "/dev/uio%u", uio_num); | |
405 | dev->intr_handle.fd = open(filename, O_RDWR); | |
406 | if (dev->intr_handle.fd < 0) { | |
407 | RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", | |
408 | filename, strerror(errno)); | |
409 | return -1; | |
410 | } | |
411 | dev->intr_handle.type = RTE_INTR_HANDLE_UIO; | |
412 | } | |
413 | ||
414 | RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%lx\n", start); | |
415 | ||
416 | p->base = start; | |
417 | p->len = 0; | |
418 | return 0; | |
419 | } | |
420 | #else | |
421 | int | |
422 | pci_uio_ioport_map(struct rte_pci_device *dev, int bar, | |
423 | struct rte_pci_ioport *p) | |
424 | { | |
425 | FILE *f; | |
426 | char buf[BUFSIZ]; | |
427 | char filename[PATH_MAX]; | |
428 | uint64_t phys_addr, end_addr, flags; | |
429 | int fd, i; | |
430 | void *addr; | |
431 | ||
432 | /* open and read addresses of the corresponding resource in sysfs */ | |
433 | snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT "/resource", | |
434 | pci_get_sysfs_path(), dev->addr.domain, dev->addr.bus, | |
435 | dev->addr.devid, dev->addr.function); | |
436 | f = fopen(filename, "r"); | |
437 | if (f == NULL) { | |
438 | RTE_LOG(ERR, EAL, "Cannot open sysfs resource: %s\n", | |
439 | strerror(errno)); | |
440 | return -1; | |
441 | } | |
442 | for (i = 0; i < bar + 1; i++) { | |
443 | if (fgets(buf, sizeof(buf), f) == NULL) { | |
444 | RTE_LOG(ERR, EAL, "Cannot read sysfs resource\n"); | |
445 | goto error; | |
446 | } | |
447 | } | |
448 | if (pci_parse_one_sysfs_resource(buf, sizeof(buf), &phys_addr, | |
449 | &end_addr, &flags) < 0) | |
450 | goto error; | |
451 | if ((flags & IORESOURCE_IO) == 0) { | |
452 | RTE_LOG(ERR, EAL, "BAR %d is not an IO resource\n", bar); | |
453 | goto error; | |
454 | } | |
455 | snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT "/resource%d", | |
456 | pci_get_sysfs_path(), dev->addr.domain, dev->addr.bus, | |
457 | dev->addr.devid, dev->addr.function, bar); | |
458 | ||
459 | /* mmap the pci resource */ | |
460 | fd = open(filename, O_RDWR); | |
461 | if (fd < 0) { | |
462 | RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", filename, | |
463 | strerror(errno)); | |
464 | goto error; | |
465 | } | |
466 | addr = mmap(NULL, end_addr + 1, PROT_READ | PROT_WRITE, | |
467 | MAP_SHARED, fd, 0); | |
468 | close(fd); | |
469 | if (addr == MAP_FAILED) { | |
470 | RTE_LOG(ERR, EAL, "Cannot mmap IO port resource: %s\n", | |
471 | strerror(errno)); | |
472 | goto error; | |
473 | } | |
474 | ||
475 | /* strangely, the base address is mmap addr + phys_addr */ | |
476 | p->base = (uintptr_t)addr + phys_addr; | |
477 | p->len = end_addr + 1; | |
478 | RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%"PRIx64"\n", p->base); | |
479 | fclose(f); | |
480 | ||
481 | return 0; | |
482 | ||
483 | error: | |
484 | fclose(f); | |
485 | return -1; | |
486 | } | |
487 | #endif | |
488 | ||
489 | void | |
490 | pci_uio_ioport_read(struct rte_pci_ioport *p, | |
491 | void *data, size_t len, off_t offset) | |
492 | { | |
493 | uint8_t *d; | |
494 | int size; | |
495 | uintptr_t reg = p->base + offset; | |
496 | ||
497 | for (d = data; len > 0; d += size, reg += size, len -= size) { | |
498 | if (len >= 4) { | |
499 | size = 4; | |
500 | #if defined(RTE_ARCH_X86) | |
501 | *(uint32_t *)d = inl(reg); | |
502 | #else | |
503 | *(uint32_t *)d = *(volatile uint32_t *)reg; | |
504 | #endif | |
505 | } else if (len >= 2) { | |
506 | size = 2; | |
507 | #if defined(RTE_ARCH_X86) | |
508 | *(uint16_t *)d = inw(reg); | |
509 | #else | |
510 | *(uint16_t *)d = *(volatile uint16_t *)reg; | |
511 | #endif | |
512 | } else { | |
513 | size = 1; | |
514 | #if defined(RTE_ARCH_X86) | |
515 | *d = inb(reg); | |
516 | #else | |
517 | *d = *(volatile uint8_t *)reg; | |
518 | #endif | |
519 | } | |
520 | } | |
521 | } | |
522 | ||
523 | void | |
524 | pci_uio_ioport_write(struct rte_pci_ioport *p, | |
525 | const void *data, size_t len, off_t offset) | |
526 | { | |
527 | const uint8_t *s; | |
528 | int size; | |
529 | uintptr_t reg = p->base + offset; | |
530 | ||
531 | for (s = data; len > 0; s += size, reg += size, len -= size) { | |
532 | if (len >= 4) { | |
533 | size = 4; | |
534 | #if defined(RTE_ARCH_X86) | |
535 | outl_p(*(const uint32_t *)s, reg); | |
536 | #else | |
537 | *(volatile uint32_t *)reg = *(const uint32_t *)s; | |
538 | #endif | |
539 | } else if (len >= 2) { | |
540 | size = 2; | |
541 | #if defined(RTE_ARCH_X86) | |
542 | outw_p(*(const uint16_t *)s, reg); | |
543 | #else | |
544 | *(volatile uint16_t *)reg = *(const uint16_t *)s; | |
545 | #endif | |
546 | } else { | |
547 | size = 1; | |
548 | #if defined(RTE_ARCH_X86) | |
549 | outb_p(*s, reg); | |
550 | #else | |
551 | *(volatile uint8_t *)reg = *s; | |
552 | #endif | |
553 | } | |
554 | } | |
555 | } | |
556 | ||
557 | int | |
558 | pci_uio_ioport_unmap(struct rte_pci_ioport *p) | |
559 | { | |
560 | #if defined(RTE_ARCH_X86) | |
561 | RTE_SET_USED(p); | |
562 | /* FIXME close intr fd ? */ | |
563 | return 0; | |
564 | #else | |
565 | return munmap((void *)(uintptr_t)p->base, p->len); | |
566 | #endif | |
567 | } |