1 | /* LIBPCI Command Implementation |
---|
2 | * |
---|
3 | * COPYRIGHT (c) 2010. |
---|
4 | * Cobham Gaisler AB. |
---|
5 | * |
---|
6 | * The license and distribution terms for this file may be |
---|
7 | * found in the file LICENSE in this distribution or at |
---|
8 | * http://www.rtems.com/license/LICENSE. |
---|
9 | */ |
---|
10 | |
---|
11 | #ifdef HAVE_CONFIG_H |
---|
12 | #include "config.h" |
---|
13 | #endif |
---|
14 | |
---|
15 | #include <inttypes.h> |
---|
16 | #include <limits.h> |
---|
17 | #include <stdlib.h> |
---|
18 | #include <stdio.h> |
---|
19 | #include <string.h> |
---|
20 | #include <errno.h> |
---|
21 | #include <pci.h> |
---|
22 | #include <pci/cfg.h> |
---|
23 | #include <pci/access.h> |
---|
24 | #include <sys/endian.h> |
---|
25 | |
---|
26 | #include <rtems.h> |
---|
27 | #include <rtems/shell.h> |
---|
28 | #include "internal.h" |
---|
29 | |
---|
30 | static void usage(void); |
---|
31 | |
---|
32 | struct shell_pci_modifier { |
---|
33 | char *name; |
---|
34 | int (*func)(int argc, char *argv[], struct shell_pci_modifier *mod); |
---|
35 | int data; |
---|
36 | }; |
---|
37 | |
---|
38 | static unsigned long get_pciid_from_string(char *arg) |
---|
39 | { |
---|
40 | unsigned long pciid; |
---|
41 | char *bus_str, *dev_str, *fun_str; |
---|
42 | unsigned long busno, devno, funno; |
---|
43 | |
---|
44 | dev_str = strstr(arg, ":"); |
---|
45 | if (dev_str == NULL) { |
---|
46 | /* PCIID */ |
---|
47 | pciid = strtoul(arg, NULL, 16); |
---|
48 | if (pciid == ULONG_MAX) |
---|
49 | return ~0; |
---|
50 | } else { |
---|
51 | /* bus:dev:fun */ |
---|
52 | bus_str = arg; |
---|
53 | *dev_str = '\0'; |
---|
54 | dev_str++; |
---|
55 | fun_str = strstr(dev_str, ":"); |
---|
56 | if (fun_str == NULL) |
---|
57 | return ~0; |
---|
58 | *fun_str = '\0'; |
---|
59 | fun_str++; |
---|
60 | |
---|
61 | busno = strtoul(bus_str, NULL, 16); |
---|
62 | if (busno == ULONG_MAX) |
---|
63 | return ~0; |
---|
64 | devno = strtoul(dev_str, NULL, 16); |
---|
65 | if (devno == ULONG_MAX) |
---|
66 | return ~0; |
---|
67 | funno = strtoul(fun_str, NULL, 16); |
---|
68 | if (funno == ULONG_MAX) |
---|
69 | return ~0; |
---|
70 | pciid = PCI_DEV(busno, devno, funno); |
---|
71 | } |
---|
72 | |
---|
73 | return pciid; |
---|
74 | } |
---|
75 | |
---|
76 | /* Print current PCI configuration that can be used in a static/peripheral PCI |
---|
77 | * configuration setup. |
---|
78 | */ |
---|
79 | static int shell_pci_pcfg( |
---|
80 | int argc, |
---|
81 | char *argv[], |
---|
82 | struct shell_pci_modifier *mod) |
---|
83 | { |
---|
84 | if (argc != 2) |
---|
85 | return -1; |
---|
86 | |
---|
87 | pci_cfg_print(); |
---|
88 | |
---|
89 | return 0; |
---|
90 | } |
---|
91 | |
---|
92 | static int shell_pci_ls( |
---|
93 | int argc, |
---|
94 | char *argv[], |
---|
95 | struct shell_pci_modifier *mod) |
---|
96 | { |
---|
97 | unsigned long pciid; |
---|
98 | |
---|
99 | if (argc == 2) { |
---|
100 | /* List all devices */ |
---|
101 | pci_print(); |
---|
102 | } else if (argc > 3) { |
---|
103 | return -1; |
---|
104 | } else { |
---|
105 | pciid = get_pciid_from_string(argv[2]); |
---|
106 | if ((pciid & 0xffff0000) != 0) |
---|
107 | return -1; |
---|
108 | |
---|
109 | pci_print_dev((pci_dev_t)pciid); |
---|
110 | } |
---|
111 | return 0; |
---|
112 | } |
---|
113 | |
---|
114 | static int shell_pci_rX( |
---|
115 | unsigned long pciid, |
---|
116 | int offset, |
---|
117 | int size) |
---|
118 | { |
---|
119 | uint8_t data8; |
---|
120 | uint16_t data16; |
---|
121 | uint32_t data32; |
---|
122 | int result; |
---|
123 | |
---|
124 | switch(size) { |
---|
125 | case 1: |
---|
126 | result = pci_cfg_r8(pciid, offset, &data8); |
---|
127 | if (result == PCISTS_OK) |
---|
128 | printf(" r08[0x%02x]: 0x%02x DEC=%d\n", offset, data8, data8); |
---|
129 | break; |
---|
130 | |
---|
131 | case 2: |
---|
132 | result = pci_cfg_r16(pciid, offset, &data16); |
---|
133 | if (result == PCISTS_OK) |
---|
134 | printf(" r16[0x%02x]: 0x%04x DEC=%d\n", offset, data16, data16); |
---|
135 | break; |
---|
136 | |
---|
137 | case 4: |
---|
138 | result = pci_cfg_r32(pciid, offset, &data32); |
---|
139 | if (result == PCISTS_OK) |
---|
140 | printf(" r32[0x%02x]: 0x%08" PRIx32 " DEC=%" PRIu32 "\n", |
---|
141 | offset, data32, data32); |
---|
142 | break; |
---|
143 | |
---|
144 | default: |
---|
145 | return PCISTS_EINVAL; |
---|
146 | } |
---|
147 | return result; |
---|
148 | } |
---|
149 | |
---|
150 | static int shell_pci_wX( |
---|
151 | unsigned long pciid, |
---|
152 | int offset, |
---|
153 | uint32_t data, |
---|
154 | int size) |
---|
155 | { |
---|
156 | uint8_t data8; |
---|
157 | uint16_t data16; |
---|
158 | int result; |
---|
159 | |
---|
160 | switch(size) { |
---|
161 | case 1: |
---|
162 | if (data > 0xff) |
---|
163 | return PCISTS_EINVAL; |
---|
164 | data8 = data & 0xff; |
---|
165 | result = pci_cfg_w8(pciid, offset, data8); |
---|
166 | if (result == PCISTS_OK) |
---|
167 | printf(" w08[0x%02x]: 0x%02x DEC=%d\n", offset, data8, data8); |
---|
168 | break; |
---|
169 | |
---|
170 | case 2: |
---|
171 | if (data > 0xffff) |
---|
172 | return PCISTS_EINVAL; |
---|
173 | data16 = data & 0xffff; |
---|
174 | result = pci_cfg_w16(pciid, offset, data16); |
---|
175 | if (result == PCISTS_OK) |
---|
176 | printf(" w16[0x%02x]: 0x%04x DEC=%d\n", offset, data16, data16); |
---|
177 | break; |
---|
178 | |
---|
179 | case 4: |
---|
180 | result = pci_cfg_w32(pciid, offset, data); |
---|
181 | if (result == PCISTS_OK) |
---|
182 | printf(" w32[0x%02x]: 0x%08" PRIx32 " DEC=%" PRIu32 "\n", |
---|
183 | offset, data, data); |
---|
184 | break; |
---|
185 | |
---|
186 | default: |
---|
187 | return PCISTS_EINVAL; |
---|
188 | } |
---|
189 | return result; |
---|
190 | } |
---|
191 | |
---|
192 | static int shell_pci_read( |
---|
193 | int argc, |
---|
194 | char *argv[], |
---|
195 | struct shell_pci_modifier *mod) |
---|
196 | { |
---|
197 | unsigned long pciid, offset; |
---|
198 | int result, size; |
---|
199 | |
---|
200 | if (argc != 4) |
---|
201 | return -1; |
---|
202 | |
---|
203 | pciid = get_pciid_from_string(argv[2]); |
---|
204 | if ((pciid & 0xffff0000) != 0) |
---|
205 | return -1; |
---|
206 | |
---|
207 | offset = strtoul(argv[3], NULL, 0); |
---|
208 | if (offset > 256) |
---|
209 | return -1; |
---|
210 | |
---|
211 | size = mod->data; |
---|
212 | result = shell_pci_rX(pciid, offset, size); |
---|
213 | switch (result) { |
---|
214 | default: |
---|
215 | case PCISTS_OK: |
---|
216 | break; |
---|
217 | |
---|
218 | case PCISTS_ERR: |
---|
219 | case PCISTS_EINVAL: |
---|
220 | puts(" Bad input argument\n"); |
---|
221 | return PCISTS_EINVAL; |
---|
222 | |
---|
223 | case PCISTS_MSTABRT: |
---|
224 | puts(" Master abort while reading configuration space"); |
---|
225 | return PCISTS_MSTABRT; |
---|
226 | } |
---|
227 | |
---|
228 | return 0; |
---|
229 | } |
---|
230 | |
---|
231 | static int shell_pci_write( |
---|
232 | int argc, |
---|
233 | char *argv[], |
---|
234 | struct shell_pci_modifier *mod) |
---|
235 | { |
---|
236 | unsigned long pciid, offset; |
---|
237 | int result, size; |
---|
238 | uint32_t data; |
---|
239 | |
---|
240 | if (argc != 5) |
---|
241 | return -1; |
---|
242 | |
---|
243 | pciid = get_pciid_from_string(argv[2]); |
---|
244 | if ((pciid & 0xffff0000) != 0) |
---|
245 | return -1; |
---|
246 | |
---|
247 | offset = strtoul(argv[3], NULL, 0); |
---|
248 | if (offset > 256) |
---|
249 | return -1; |
---|
250 | |
---|
251 | data = strtoul(argv[4], NULL, 0); |
---|
252 | if (data == ULONG_MAX && errno == ERANGE) |
---|
253 | return -1; |
---|
254 | |
---|
255 | size = mod->data; |
---|
256 | result = shell_pci_wX(pciid, offset, data, size); |
---|
257 | switch (result) { |
---|
258 | default: |
---|
259 | case PCISTS_OK: |
---|
260 | break; |
---|
261 | |
---|
262 | case PCISTS_ERR: |
---|
263 | case PCISTS_EINVAL: |
---|
264 | puts(" Bad input argument\n"); |
---|
265 | return PCISTS_EINVAL; |
---|
266 | |
---|
267 | case PCISTS_MSTABRT: |
---|
268 | puts(" Master abort while reading configuration space"); |
---|
269 | return PCISTS_MSTABRT; |
---|
270 | } |
---|
271 | return 0; |
---|
272 | } |
---|
273 | |
---|
274 | static int shell_pci_pciid( |
---|
275 | int argc, |
---|
276 | char *argv[], |
---|
277 | struct shell_pci_modifier *mod) |
---|
278 | { |
---|
279 | unsigned long pciid; |
---|
280 | |
---|
281 | if (argc != 3) |
---|
282 | return -1; |
---|
283 | |
---|
284 | pciid = get_pciid_from_string(argv[2]); |
---|
285 | if ((pciid & 0xffff0000) != 0) |
---|
286 | return -1; |
---|
287 | |
---|
288 | printf(" PCIID: 0x%lx [%lx:%lx:%lx]\n", pciid, PCI_DEV_EXPAND(pciid)); |
---|
289 | return 0; |
---|
290 | } |
---|
291 | |
---|
292 | static int shell_pci_getdev( |
---|
293 | int argc, |
---|
294 | char *argv[], |
---|
295 | struct shell_pci_modifier *mod) |
---|
296 | { |
---|
297 | unsigned long pciid; |
---|
298 | struct pci_dev *dev; |
---|
299 | |
---|
300 | if (argc != 3) |
---|
301 | return -1; |
---|
302 | |
---|
303 | pciid = get_pciid_from_string(argv[2]); |
---|
304 | if ((pciid & 0xffff0000) != 0) |
---|
305 | return -1; |
---|
306 | |
---|
307 | if (pci_get_dev(pciid, &dev)) { |
---|
308 | printf(" GETDEV: no device on [%lx:%lx:%lx]\n", PCI_DEV_EXPAND(pciid)); |
---|
309 | return 0; |
---|
310 | } |
---|
311 | |
---|
312 | printf(" PCI RAM DEVICE: %p\n", dev); |
---|
313 | return 0; |
---|
314 | } |
---|
315 | |
---|
316 | static int shell_pci_infodev( |
---|
317 | int argc, |
---|
318 | char *argv[], |
---|
319 | struct shell_pci_modifier *mod) |
---|
320 | { |
---|
321 | unsigned long arg; |
---|
322 | struct pci_dev *dev; |
---|
323 | struct pci_bus *bus; |
---|
324 | struct pci_res *res; |
---|
325 | char *type_str, *str1, *res_types[3] = {" IO16", "MEMIO", "MEM"}; |
---|
326 | int i, res_avail; |
---|
327 | |
---|
328 | if (argc != 3) |
---|
329 | return -1; |
---|
330 | |
---|
331 | arg = strtoul(argv[2], NULL, 0); |
---|
332 | if (arg == ULONG_MAX && errno == ERANGE) |
---|
333 | return -1; |
---|
334 | |
---|
335 | dev = (struct pci_dev *)arg; |
---|
336 | if (!dev) { |
---|
337 | printf(" INFODEV: invalid device\n"); |
---|
338 | return 0; |
---|
339 | } |
---|
340 | |
---|
341 | if (dev->flags & PCI_DEV_BRIDGE) { |
---|
342 | type_str = "PCI-to-PCI BRIDGE"; |
---|
343 | if (!dev->bus) |
---|
344 | type_str = "PCI HOST BRIDGE"; |
---|
345 | } else |
---|
346 | type_str = "PCI DEVICE"; |
---|
347 | printf(" %s at [%x:%x:%x]\n", type_str, PCI_DEV_EXPAND(dev->busdevfun)); |
---|
348 | |
---|
349 | bus = (struct pci_bus *)dev; |
---|
350 | if (bus) { |
---|
351 | printf(" PRIMARY: BUS 0x%x\n", bus->pri); |
---|
352 | printf(" SECONDARY: BUS 0x%x\n", bus->num); |
---|
353 | printf(" SUB ORDINATE: BUS 0x%x\n", bus->sord); |
---|
354 | } |
---|
355 | |
---|
356 | printf(" PCIID: 0x%04x\n", dev->busdevfun); |
---|
357 | bus = dev->bus; |
---|
358 | if (!bus) { |
---|
359 | printf(" AT BUS: 0x%x via Host Bridge\n", bus->num); |
---|
360 | } else { |
---|
361 | printf(" AT BUS: 0x%x via Bridge at [%x:%x:%x]\n", bus->num, |
---|
362 | PCI_DEV_EXPAND(bus->dev.busdevfun)); |
---|
363 | } |
---|
364 | printf(" VENDOR: 0x%04x\n", dev->vendor); |
---|
365 | printf(" DEVICE: 0x%04x\n", dev->device); |
---|
366 | printf(" SUB VENDOR: 0x%04x\n", dev->subvendor); |
---|
367 | printf(" SUB DEVICE: 0x%04x\n", dev->subdevice); |
---|
368 | printf(" CLASS: 0x%06" PRIx32 "\n", dev->classrev >> 8); |
---|
369 | printf(" REVISION: 0x%02" PRIx32 "\n", dev->classrev & 0xff); |
---|
370 | printf(" IRQ: %d\n", dev->sysirq); |
---|
371 | |
---|
372 | res_avail = 0; |
---|
373 | for (i = 0; i < DEV_RES_CNT; i++) { |
---|
374 | res = &dev->resources[i]; |
---|
375 | |
---|
376 | if ((res->flags & PCI_RES_TYPE_MASK) == 0) |
---|
377 | continue; |
---|
378 | |
---|
379 | str1 = res_types[(res->flags & PCI_RES_TYPE_MASK) - 1]; |
---|
380 | if (res->flags & PCI_RES_IO32) |
---|
381 | str1 = " IO32"; |
---|
382 | |
---|
383 | if (res_avail == 0) { |
---|
384 | puts(" RESOURCES:"); |
---|
385 | res_avail = 1; |
---|
386 | } |
---|
387 | |
---|
388 | if (res->flags & PCI_RES_FAIL) { |
---|
389 | printf(" %s[%d]: NOT ASSIGNED", str1, i); |
---|
390 | continue; |
---|
391 | } |
---|
392 | |
---|
393 | printf(" %s[%d]: %08" PRIx32 "-%08" PRIx32 "\n", |
---|
394 | str1, i, res->start, res->end - 1); |
---|
395 | } |
---|
396 | |
---|
397 | if (res_avail == 0) |
---|
398 | puts(" NO CONFIGURED RESOURCES AVAILABLE"); |
---|
399 | |
---|
400 | return 0; |
---|
401 | } |
---|
402 | |
---|
403 | static int pci_summary(void) |
---|
404 | { |
---|
405 | char *str; |
---|
406 | char *cfglib_strs[5] = {"NONE", "AUTO", "STATIC", "READ", "PERIPHERAL"}; |
---|
407 | |
---|
408 | if (pci_system_type == PCI_SYSTEM_HOST) |
---|
409 | str = "HOST"; |
---|
410 | else if (pci_system_type == PCI_SYSTEM_PERIPHERAL) |
---|
411 | str = "PERIPHERAL"; |
---|
412 | else |
---|
413 | str = "UNKNOWN / UNINITIALIZED"; |
---|
414 | printf(" SYSTEM: %s\n", str); |
---|
415 | |
---|
416 | if (pci_config_lib_type > PCI_CONFIG_LIB_PERIPHERAL) { |
---|
417 | puts(" Bad configuration library"); |
---|
418 | return 1; |
---|
419 | } |
---|
420 | printf(" CFG LIBRARY: %s\n", cfglib_strs[pci_config_lib_type]); |
---|
421 | printf(" NO. PCI BUSES: %d buses\n", pci_bus_count()); |
---|
422 | printf(" PCI ENDIAN: %s\n", pci_endian ? "Big" : "Little"); |
---|
423 | #if BYTE_ORDER == LITTLE_ENDIAN |
---|
424 | puts(" MACHINE ENDIAN: Little"); |
---|
425 | #else |
---|
426 | puts(" MACHINE ENDIAN: Big"); |
---|
427 | #endif |
---|
428 | |
---|
429 | return 0; |
---|
430 | } |
---|
431 | |
---|
432 | static const char pci_usage_str[] = |
---|
433 | " usage:\n" |
---|
434 | " pci ls [bus:dev:fun|PCIID] List one or all devices\n" |
---|
435 | " pci r{8|16|32} bus:dev:fun OFS Configuration space read\n" |
---|
436 | " pci r{8|16|32} PCIID OFS Configuration space read\n" |
---|
437 | " access by PCIID\n" |
---|
438 | " pci w{8|16|32} bus:dev:fun OFS D Configuration space write\n" |
---|
439 | " pci w{8|16|32} PCIID OFS D Configuration space write\n" |
---|
440 | " access by PCIID\n" |
---|
441 | " pci pciid bus:dev:fun Print PCIID for bus:dev:fun\n" |
---|
442 | " pci pciid PCIID Print bus:dev:fun for PCIID\n" |
---|
443 | " pci pcfg Print current PCI config for\n" |
---|
444 | " static configuration library\n" |
---|
445 | " pci getdev {PCIID|bus:dev:fun} Get PCI Device from RAM tree\n" |
---|
446 | " pci infodev DEV_ADR Info about a PCI RAM Device\n" |
---|
447 | " pci --help\n"; |
---|
448 | |
---|
449 | static void usage(void) |
---|
450 | { |
---|
451 | puts(pci_usage_str); |
---|
452 | } |
---|
453 | |
---|
454 | static int shell_pci_usage( |
---|
455 | int argc, |
---|
456 | char *argv[], |
---|
457 | struct shell_pci_modifier *mod) |
---|
458 | { |
---|
459 | usage(); |
---|
460 | return 0; |
---|
461 | } |
---|
462 | |
---|
463 | #define MODIFIER_NUM 12 |
---|
464 | static struct shell_pci_modifier shell_pci_modifiers[MODIFIER_NUM] = |
---|
465 | { |
---|
466 | {"ls", shell_pci_ls, 0}, |
---|
467 | {"r8", shell_pci_read, 1}, |
---|
468 | {"r16", shell_pci_read, 2}, |
---|
469 | {"r32", shell_pci_read, 4}, |
---|
470 | {"w8", shell_pci_write, 1}, |
---|
471 | {"w16", shell_pci_write, 2}, |
---|
472 | {"w32", shell_pci_write, 4}, |
---|
473 | {"pciid", shell_pci_pciid, 0}, |
---|
474 | {"pcfg", shell_pci_pcfg, 0}, |
---|
475 | {"getdev", shell_pci_getdev, 0}, |
---|
476 | {"infodev", shell_pci_infodev, 0}, |
---|
477 | {"--help", shell_pci_usage}, |
---|
478 | }; |
---|
479 | |
---|
480 | static struct shell_pci_modifier *shell_pci_find_modifier(char *name) |
---|
481 | { |
---|
482 | struct shell_pci_modifier *mod; |
---|
483 | int i; |
---|
484 | |
---|
485 | if (name == NULL) |
---|
486 | return NULL; |
---|
487 | |
---|
488 | for (i=0, mod=&shell_pci_modifiers[0]; i<MODIFIER_NUM; i++, mod++) { |
---|
489 | if (strcmp(name, mod->name) == 0) |
---|
490 | return mod; |
---|
491 | } |
---|
492 | |
---|
493 | return NULL; |
---|
494 | } |
---|
495 | |
---|
496 | static int rtems_shell_main_pci( |
---|
497 | int argc, |
---|
498 | char *argv[] |
---|
499 | ) |
---|
500 | { |
---|
501 | struct shell_pci_modifier *mod; |
---|
502 | int rc; |
---|
503 | |
---|
504 | if (argc < 2) { |
---|
505 | /* without arguments */ |
---|
506 | pci_summary(); |
---|
507 | rc = 0; |
---|
508 | } else if ((mod=shell_pci_find_modifier(argv[1])) != NULL) { |
---|
509 | rc = mod->func(argc, argv, mod); |
---|
510 | } else { |
---|
511 | rc = -1; |
---|
512 | } |
---|
513 | |
---|
514 | if (rc < 0) { |
---|
515 | printf(" invalid argument\n"); |
---|
516 | usage(); |
---|
517 | } |
---|
518 | |
---|
519 | return rc; |
---|
520 | } |
---|
521 | |
---|
522 | rtems_shell_cmd_t rtems_shell_PCI_Command = { |
---|
523 | "pci", /* name */ |
---|
524 | pci_usage_str, /* usage */ |
---|
525 | "system", /* topic */ |
---|
526 | rtems_shell_main_pci, /* command */ |
---|
527 | NULL, /* alias */ |
---|
528 | NULL /* next */ |
---|
529 | }; |
---|