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1 | /* | |
2 | * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
3 | * Andreas Heppel <aheppel@sysgo.de> | |
4 | * | |
5 | * (C) Copyright 2002 | |
6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
7 | * Wolfgang Grandegger, DENX Software Engineering, wg@denx.de. | |
8 | * | |
9 | * SPDX-License-Identifier: GPL-2.0+ | |
10 | */ | |
11 | ||
12 | /* | |
13 | * PCI routines | |
14 | */ | |
15 | ||
16 | #include <common.h> | |
17 | #include <bootretry.h> | |
18 | #include <cli.h> | |
19 | #include <command.h> | |
20 | #include <console.h> | |
21 | #include <dm.h> | |
22 | #include <asm/processor.h> | |
23 | #include <asm/io.h> | |
24 | #include <pci.h> | |
25 | ||
26 | struct pci_reg_info { | |
27 | const char *name; | |
28 | enum pci_size_t size; | |
29 | u8 offset; | |
30 | }; | |
31 | ||
32 | static int pci_byte_size(enum pci_size_t size) | |
33 | { | |
34 | switch (size) { | |
35 | case PCI_SIZE_8: | |
36 | return 1; | |
37 | case PCI_SIZE_16: | |
38 | return 2; | |
39 | case PCI_SIZE_32: | |
40 | default: | |
41 | return 4; | |
42 | } | |
43 | } | |
44 | ||
45 | static int pci_field_width(enum pci_size_t size) | |
46 | { | |
47 | return pci_byte_size(size) * 2; | |
48 | } | |
49 | ||
50 | #ifdef CONFIG_DM_PCI | |
51 | static void pci_show_regs(struct udevice *dev, struct pci_reg_info *regs) | |
52 | { | |
53 | for (; regs->name; regs++) { | |
54 | unsigned long val; | |
55 | ||
56 | dm_pci_read_config(dev, regs->offset, &val, regs->size); | |
57 | printf(" %s =%*s%#.*lx\n", regs->name, | |
58 | (int)(28 - strlen(regs->name)), "", | |
59 | pci_field_width(regs->size), val); | |
60 | } | |
61 | } | |
62 | #else | |
63 | static unsigned long pci_read_config(pci_dev_t dev, int offset, | |
64 | enum pci_size_t size) | |
65 | { | |
66 | u32 val32; | |
67 | u16 val16; | |
68 | u8 val8; | |
69 | ||
70 | switch (size) { | |
71 | case PCI_SIZE_8: | |
72 | pci_read_config_byte(dev, offset, &val8); | |
73 | return val8; | |
74 | case PCI_SIZE_16: | |
75 | pci_read_config_word(dev, offset, &val16); | |
76 | return val16; | |
77 | case PCI_SIZE_32: | |
78 | default: | |
79 | pci_read_config_dword(dev, offset, &val32); | |
80 | return val32; | |
81 | } | |
82 | } | |
83 | ||
84 | static void pci_show_regs(pci_dev_t dev, struct pci_reg_info *regs) | |
85 | { | |
86 | for (; regs->name; regs++) { | |
87 | printf(" %s =%*s%#.*lx\n", regs->name, | |
88 | (int)(28 - strlen(regs->name)), "", | |
89 | pci_field_width(regs->size), | |
90 | pci_read_config(dev, regs->offset, regs->size)); | |
91 | } | |
92 | } | |
93 | #endif | |
94 | ||
95 | #ifdef CONFIG_DM_PCI | |
96 | int pci_bar_show(struct udevice *dev) | |
97 | { | |
98 | u8 header_type; | |
99 | int bar_cnt, bar_id, mem_type; | |
100 | bool is_64, is_io; | |
101 | u32 base_low, base_high; | |
102 | u32 size_low, size_high; | |
103 | u64 base, size; | |
104 | u32 reg_addr; | |
105 | int prefetchable; | |
106 | ||
107 | dm_pci_read_config8(dev, PCI_HEADER_TYPE, &header_type); | |
108 | ||
109 | if (header_type == PCI_HEADER_TYPE_CARDBUS) { | |
110 | printf("CardBus doesn't support BARs\n"); | |
111 | return -ENOSYS; | |
112 | } | |
113 | ||
114 | bar_cnt = (header_type == PCI_HEADER_TYPE_NORMAL) ? 6 : 2; | |
115 | ||
116 | printf("ID Base Size Width Type\n"); | |
117 | printf("----------------------------------------------------------\n"); | |
118 | ||
119 | bar_id = 0; | |
120 | reg_addr = PCI_BASE_ADDRESS_0; | |
121 | while (bar_cnt) { | |
122 | dm_pci_read_config32(dev, reg_addr, &base_low); | |
123 | dm_pci_write_config32(dev, reg_addr, 0xffffffff); | |
124 | dm_pci_read_config32(dev, reg_addr, &size_low); | |
125 | dm_pci_write_config32(dev, reg_addr, base_low); | |
126 | reg_addr += 4; | |
127 | ||
128 | base = base_low & ~0xf; | |
129 | size = size_low & ~0xf; | |
130 | base_high = 0x0; | |
131 | size_high = 0xffffffff; | |
132 | is_64 = 0; | |
133 | prefetchable = base_low & PCI_BASE_ADDRESS_MEM_PREFETCH; | |
134 | is_io = base_low & PCI_BASE_ADDRESS_SPACE_IO; | |
135 | mem_type = base_low & PCI_BASE_ADDRESS_MEM_TYPE_MASK; | |
136 | ||
137 | if (mem_type == PCI_BASE_ADDRESS_MEM_TYPE_64) { | |
138 | dm_pci_read_config32(dev, reg_addr, &base_high); | |
139 | dm_pci_write_config32(dev, reg_addr, 0xffffffff); | |
140 | dm_pci_read_config32(dev, reg_addr, &size_high); | |
141 | dm_pci_write_config32(dev, reg_addr, base_high); | |
142 | bar_cnt--; | |
143 | reg_addr += 4; | |
144 | is_64 = 1; | |
145 | } | |
146 | ||
147 | base = base | ((u64)base_high << 32); | |
148 | size = size | ((u64)size_high << 32); | |
149 | ||
150 | if ((!is_64 && size_low) || (is_64 && size)) { | |
151 | size = ~size + 1; | |
152 | printf(" %d %#016llx %#016llx %d %s %s\n", | |
153 | bar_id, (unsigned long long)base, | |
154 | (unsigned long long)size, is_64 ? 64 : 32, | |
155 | is_io ? "I/O" : "MEM", | |
156 | prefetchable ? "Prefetchable" : ""); | |
157 | } | |
158 | ||
159 | bar_id++; | |
160 | bar_cnt--; | |
161 | } | |
162 | ||
163 | return 0; | |
164 | } | |
165 | #endif | |
166 | ||
167 | static struct pci_reg_info regs_start[] = { | |
168 | { "vendor ID", PCI_SIZE_16, PCI_VENDOR_ID }, | |
169 | { "device ID", PCI_SIZE_16, PCI_DEVICE_ID }, | |
170 | { "command register ID", PCI_SIZE_16, PCI_COMMAND }, | |
171 | { "status register", PCI_SIZE_16, PCI_STATUS }, | |
172 | { "revision ID", PCI_SIZE_8, PCI_REVISION_ID }, | |
173 | {}, | |
174 | }; | |
175 | ||
176 | static struct pci_reg_info regs_rest[] = { | |
177 | { "sub class code", PCI_SIZE_8, PCI_CLASS_SUB_CODE }, | |
178 | { "programming interface", PCI_SIZE_8, PCI_CLASS_PROG }, | |
179 | { "cache line", PCI_SIZE_8, PCI_CACHE_LINE_SIZE }, | |
180 | { "latency time", PCI_SIZE_8, PCI_LATENCY_TIMER }, | |
181 | { "header type", PCI_SIZE_8, PCI_HEADER_TYPE }, | |
182 | { "BIST", PCI_SIZE_8, PCI_BIST }, | |
183 | { "base address 0", PCI_SIZE_32, PCI_BASE_ADDRESS_0 }, | |
184 | {}, | |
185 | }; | |
186 | ||
187 | static struct pci_reg_info regs_normal[] = { | |
188 | { "base address 1", PCI_SIZE_32, PCI_BASE_ADDRESS_1 }, | |
189 | { "base address 2", PCI_SIZE_32, PCI_BASE_ADDRESS_2 }, | |
190 | { "base address 3", PCI_SIZE_32, PCI_BASE_ADDRESS_3 }, | |
191 | { "base address 4", PCI_SIZE_32, PCI_BASE_ADDRESS_4 }, | |
192 | { "base address 5", PCI_SIZE_32, PCI_BASE_ADDRESS_5 }, | |
193 | { "cardBus CIS pointer", PCI_SIZE_32, PCI_CARDBUS_CIS }, | |
194 | { "sub system vendor ID", PCI_SIZE_16, PCI_SUBSYSTEM_VENDOR_ID }, | |
195 | { "sub system ID", PCI_SIZE_16, PCI_SUBSYSTEM_ID }, | |
196 | { "expansion ROM base address", PCI_SIZE_32, PCI_ROM_ADDRESS }, | |
197 | { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE }, | |
198 | { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN }, | |
199 | { "min Grant", PCI_SIZE_8, PCI_MIN_GNT }, | |
200 | { "max Latency", PCI_SIZE_8, PCI_MAX_LAT }, | |
201 | {}, | |
202 | }; | |
203 | ||
204 | static struct pci_reg_info regs_bridge[] = { | |
205 | { "base address 1", PCI_SIZE_32, PCI_BASE_ADDRESS_1 }, | |
206 | { "primary bus number", PCI_SIZE_8, PCI_PRIMARY_BUS }, | |
207 | { "secondary bus number", PCI_SIZE_8, PCI_SECONDARY_BUS }, | |
208 | { "subordinate bus number", PCI_SIZE_8, PCI_SUBORDINATE_BUS }, | |
209 | { "secondary latency timer", PCI_SIZE_8, PCI_SEC_LATENCY_TIMER }, | |
210 | { "IO base", PCI_SIZE_8, PCI_IO_BASE }, | |
211 | { "IO limit", PCI_SIZE_8, PCI_IO_LIMIT }, | |
212 | { "secondary status", PCI_SIZE_16, PCI_SEC_STATUS }, | |
213 | { "memory base", PCI_SIZE_16, PCI_MEMORY_BASE }, | |
214 | { "memory limit", PCI_SIZE_16, PCI_MEMORY_LIMIT }, | |
215 | { "prefetch memory base", PCI_SIZE_16, PCI_PREF_MEMORY_BASE }, | |
216 | { "prefetch memory limit", PCI_SIZE_16, PCI_PREF_MEMORY_LIMIT }, | |
217 | { "prefetch memory base upper", PCI_SIZE_32, PCI_PREF_BASE_UPPER32 }, | |
218 | { "prefetch memory limit upper", PCI_SIZE_32, PCI_PREF_LIMIT_UPPER32 }, | |
219 | { "IO base upper 16 bits", PCI_SIZE_16, PCI_IO_BASE_UPPER16 }, | |
220 | { "IO limit upper 16 bits", PCI_SIZE_16, PCI_IO_LIMIT_UPPER16 }, | |
221 | { "expansion ROM base address", PCI_SIZE_32, PCI_ROM_ADDRESS1 }, | |
222 | { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE }, | |
223 | { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN }, | |
224 | { "bridge control", PCI_SIZE_16, PCI_BRIDGE_CONTROL }, | |
225 | {}, | |
226 | }; | |
227 | ||
228 | static struct pci_reg_info regs_cardbus[] = { | |
229 | { "capabilities", PCI_SIZE_8, PCI_CB_CAPABILITY_LIST }, | |
230 | { "secondary status", PCI_SIZE_16, PCI_CB_SEC_STATUS }, | |
231 | { "primary bus number", PCI_SIZE_8, PCI_CB_PRIMARY_BUS }, | |
232 | { "CardBus number", PCI_SIZE_8, PCI_CB_CARD_BUS }, | |
233 | { "subordinate bus number", PCI_SIZE_8, PCI_CB_SUBORDINATE_BUS }, | |
234 | { "CardBus latency timer", PCI_SIZE_8, PCI_CB_LATENCY_TIMER }, | |
235 | { "CardBus memory base 0", PCI_SIZE_32, PCI_CB_MEMORY_BASE_0 }, | |
236 | { "CardBus memory limit 0", PCI_SIZE_32, PCI_CB_MEMORY_LIMIT_0 }, | |
237 | { "CardBus memory base 1", PCI_SIZE_32, PCI_CB_MEMORY_BASE_1 }, | |
238 | { "CardBus memory limit 1", PCI_SIZE_32, PCI_CB_MEMORY_LIMIT_1 }, | |
239 | { "CardBus IO base 0", PCI_SIZE_16, PCI_CB_IO_BASE_0 }, | |
240 | { "CardBus IO base high 0", PCI_SIZE_16, PCI_CB_IO_BASE_0_HI }, | |
241 | { "CardBus IO limit 0", PCI_SIZE_16, PCI_CB_IO_LIMIT_0 }, | |
242 | { "CardBus IO limit high 0", PCI_SIZE_16, PCI_CB_IO_LIMIT_0_HI }, | |
243 | { "CardBus IO base 1", PCI_SIZE_16, PCI_CB_IO_BASE_1 }, | |
244 | { "CardBus IO base high 1", PCI_SIZE_16, PCI_CB_IO_BASE_1_HI }, | |
245 | { "CardBus IO limit 1", PCI_SIZE_16, PCI_CB_IO_LIMIT_1 }, | |
246 | { "CardBus IO limit high 1", PCI_SIZE_16, PCI_CB_IO_LIMIT_1_HI }, | |
247 | { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE }, | |
248 | { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN }, | |
249 | { "bridge control", PCI_SIZE_16, PCI_CB_BRIDGE_CONTROL }, | |
250 | { "subvendor ID", PCI_SIZE_16, PCI_CB_SUBSYSTEM_VENDOR_ID }, | |
251 | { "subdevice ID", PCI_SIZE_16, PCI_CB_SUBSYSTEM_ID }, | |
252 | { "PC Card 16bit base address", PCI_SIZE_32, PCI_CB_LEGACY_MODE_BASE }, | |
253 | {}, | |
254 | }; | |
255 | ||
256 | /** | |
257 | * pci_header_show() - Show the header of the specified PCI device. | |
258 | * | |
259 | * @dev: Bus+Device+Function number | |
260 | */ | |
261 | #ifdef CONFIG_DM_PCI | |
262 | void pci_header_show(struct udevice *dev) | |
263 | #else | |
264 | void pci_header_show(pci_dev_t dev) | |
265 | #endif | |
266 | { | |
267 | #ifdef CONFIG_DM_PCI | |
268 | unsigned long class, header_type; | |
269 | ||
270 | dm_pci_read_config(dev, PCI_CLASS_CODE, &class, PCI_SIZE_8); | |
271 | dm_pci_read_config(dev, PCI_HEADER_TYPE, &header_type, PCI_SIZE_8); | |
272 | #else | |
273 | u8 class, header_type; | |
274 | ||
275 | pci_read_config_byte(dev, PCI_CLASS_CODE, &class); | |
276 | pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); | |
277 | #endif | |
278 | pci_show_regs(dev, regs_start); | |
279 | printf(" class code = 0x%.2x (%s)\n", (int)class, | |
280 | pci_class_str(class)); | |
281 | pci_show_regs(dev, regs_rest); | |
282 | ||
283 | switch (header_type & 0x03) { | |
284 | case PCI_HEADER_TYPE_NORMAL: /* "normal" PCI device */ | |
285 | pci_show_regs(dev, regs_normal); | |
286 | break; | |
287 | case PCI_HEADER_TYPE_BRIDGE: /* PCI-to-PCI bridge */ | |
288 | pci_show_regs(dev, regs_bridge); | |
289 | break; | |
290 | case PCI_HEADER_TYPE_CARDBUS: /* PCI-to-CardBus bridge */ | |
291 | pci_show_regs(dev, regs_cardbus); | |
292 | break; | |
293 | ||
294 | default: | |
295 | printf("unknown header\n"); | |
296 | break; | |
297 | } | |
298 | } | |
299 | ||
300 | void pciinfo_header(int busnum, bool short_listing) | |
301 | { | |
302 | printf("Scanning PCI devices on bus %d\n", busnum); | |
303 | ||
304 | if (short_listing) { | |
305 | printf("BusDevFun VendorId DeviceId Device Class Sub-Class\n"); | |
306 | printf("_____________________________________________________________\n"); | |
307 | } | |
308 | } | |
309 | ||
310 | #ifdef CONFIG_DM_PCI | |
311 | /** | |
312 | * pci_header_show_brief() - Show the short-form PCI device header | |
313 | * | |
314 | * Reads and prints the header of the specified PCI device in short form. | |
315 | * | |
316 | * @dev: PCI device to show | |
317 | */ | |
318 | static void pci_header_show_brief(struct udevice *dev) | |
319 | { | |
320 | ulong vendor, device; | |
321 | ulong class, subclass; | |
322 | ||
323 | dm_pci_read_config(dev, PCI_VENDOR_ID, &vendor, PCI_SIZE_16); | |
324 | dm_pci_read_config(dev, PCI_DEVICE_ID, &device, PCI_SIZE_16); | |
325 | dm_pci_read_config(dev, PCI_CLASS_CODE, &class, PCI_SIZE_8); | |
326 | dm_pci_read_config(dev, PCI_CLASS_SUB_CODE, &subclass, PCI_SIZE_8); | |
327 | ||
328 | printf("0x%.4lx 0x%.4lx %-23s 0x%.2lx\n", | |
329 | vendor, device, | |
330 | pci_class_str(class), subclass); | |
331 | } | |
332 | ||
333 | static void pciinfo(struct udevice *bus, bool short_listing) | |
334 | { | |
335 | struct udevice *dev; | |
336 | ||
337 | pciinfo_header(bus->seq, short_listing); | |
338 | ||
339 | for (device_find_first_child(bus, &dev); | |
340 | dev; | |
341 | device_find_next_child(&dev)) { | |
342 | struct pci_child_platdata *pplat; | |
343 | ||
344 | pplat = dev_get_parent_platdata(dev); | |
345 | if (short_listing) { | |
346 | printf("%02x.%02x.%02x ", bus->seq, | |
347 | PCI_DEV(pplat->devfn), PCI_FUNC(pplat->devfn)); | |
348 | pci_header_show_brief(dev); | |
349 | } else { | |
350 | printf("\nFound PCI device %02x.%02x.%02x:\n", bus->seq, | |
351 | PCI_DEV(pplat->devfn), PCI_FUNC(pplat->devfn)); | |
352 | pci_header_show(dev); | |
353 | } | |
354 | } | |
355 | } | |
356 | ||
357 | #else | |
358 | ||
359 | /** | |
360 | * pci_header_show_brief() - Show the short-form PCI device header | |
361 | * | |
362 | * Reads and prints the header of the specified PCI device in short form. | |
363 | * | |
364 | * @dev: Bus+Device+Function number | |
365 | */ | |
366 | void pci_header_show_brief(pci_dev_t dev) | |
367 | { | |
368 | u16 vendor, device; | |
369 | u8 class, subclass; | |
370 | ||
371 | pci_read_config_word(dev, PCI_VENDOR_ID, &vendor); | |
372 | pci_read_config_word(dev, PCI_DEVICE_ID, &device); | |
373 | pci_read_config_byte(dev, PCI_CLASS_CODE, &class); | |
374 | pci_read_config_byte(dev, PCI_CLASS_SUB_CODE, &subclass); | |
375 | ||
376 | printf("0x%.4x 0x%.4x %-23s 0x%.2x\n", | |
377 | vendor, device, | |
378 | pci_class_str(class), subclass); | |
379 | } | |
380 | ||
381 | /** | |
382 | * pciinfo() - Show a list of devices on the PCI bus | |
383 | * | |
384 | * Show information about devices on PCI bus. Depending on @short_pci_listing | |
385 | * the output will be more or less exhaustive. | |
386 | * | |
387 | * @bus_num: The number of the bus to be scanned | |
388 | * @short_pci_listing: true to use short form, showing only a brief header | |
389 | * for each device | |
390 | */ | |
391 | void pciinfo(int bus_num, int short_pci_listing) | |
392 | { | |
393 | struct pci_controller *hose = pci_bus_to_hose(bus_num); | |
394 | int device; | |
395 | int function; | |
396 | unsigned char header_type; | |
397 | unsigned short vendor_id; | |
398 | pci_dev_t dev; | |
399 | int ret; | |
400 | ||
401 | if (!hose) | |
402 | return; | |
403 | ||
404 | pciinfo_header(bus_num, short_pci_listing); | |
405 | ||
406 | for (device = 0; device < PCI_MAX_PCI_DEVICES; device++) { | |
407 | header_type = 0; | |
408 | vendor_id = 0; | |
409 | for (function = 0; function < PCI_MAX_PCI_FUNCTIONS; | |
410 | function++) { | |
411 | /* | |
412 | * If this is not a multi-function device, we skip | |
413 | * the rest. | |
414 | */ | |
415 | if (function && !(header_type & 0x80)) | |
416 | break; | |
417 | ||
418 | dev = PCI_BDF(bus_num, device, function); | |
419 | ||
420 | if (pci_skip_dev(hose, dev)) | |
421 | continue; | |
422 | ||
423 | ret = pci_read_config_word(dev, PCI_VENDOR_ID, | |
424 | &vendor_id); | |
425 | if (ret) | |
426 | goto error; | |
427 | if ((vendor_id == 0xFFFF) || (vendor_id == 0x0000)) | |
428 | continue; | |
429 | ||
430 | if (!function) { | |
431 | pci_read_config_byte(dev, PCI_HEADER_TYPE, | |
432 | &header_type); | |
433 | } | |
434 | ||
435 | if (short_pci_listing) { | |
436 | printf("%02x.%02x.%02x ", bus_num, device, | |
437 | function); | |
438 | pci_header_show_brief(dev); | |
439 | } else { | |
440 | printf("\nFound PCI device %02x.%02x.%02x:\n", | |
441 | bus_num, device, function); | |
442 | pci_header_show(dev); | |
443 | } | |
444 | } | |
445 | } | |
446 | ||
447 | return; | |
448 | error: | |
449 | printf("Cannot read bus configuration: %d\n", ret); | |
450 | } | |
451 | #endif | |
452 | ||
453 | /** | |
454 | * get_pci_dev() - Convert the "bus.device.function" identifier into a number | |
455 | * | |
456 | * @name: Device string in the form "bus.device.function" where each is in hex | |
457 | * @return encoded pci_dev_t or -1 if the string was invalid | |
458 | */ | |
459 | static pci_dev_t get_pci_dev(char *name) | |
460 | { | |
461 | char cnum[12]; | |
462 | int len, i, iold, n; | |
463 | int bdfs[3] = {0,0,0}; | |
464 | ||
465 | len = strlen(name); | |
466 | if (len > 8) | |
467 | return -1; | |
468 | for (i = 0, iold = 0, n = 0; i < len; i++) { | |
469 | if (name[i] == '.') { | |
470 | memcpy(cnum, &name[iold], i - iold); | |
471 | cnum[i - iold] = '\0'; | |
472 | bdfs[n++] = simple_strtoul(cnum, NULL, 16); | |
473 | iold = i + 1; | |
474 | } | |
475 | } | |
476 | strcpy(cnum, &name[iold]); | |
477 | if (n == 0) | |
478 | n = 1; | |
479 | bdfs[n] = simple_strtoul(cnum, NULL, 16); | |
480 | ||
481 | return PCI_BDF(bdfs[0], bdfs[1], bdfs[2]); | |
482 | } | |
483 | ||
484 | #ifdef CONFIG_DM_PCI | |
485 | static int pci_cfg_display(struct udevice *dev, ulong addr, | |
486 | enum pci_size_t size, ulong length) | |
487 | #else | |
488 | static int pci_cfg_display(pci_dev_t bdf, ulong addr, enum pci_size_t size, | |
489 | ulong length) | |
490 | #endif | |
491 | { | |
492 | #define DISP_LINE_LEN 16 | |
493 | ulong i, nbytes, linebytes; | |
494 | int byte_size; | |
495 | int rc = 0; | |
496 | ||
497 | byte_size = pci_byte_size(size); | |
498 | if (length == 0) | |
499 | length = 0x40 / byte_size; /* Standard PCI config space */ | |
500 | ||
501 | /* Print the lines. | |
502 | * once, and all accesses are with the specified bus width. | |
503 | */ | |
504 | nbytes = length * byte_size; | |
505 | do { | |
506 | printf("%08lx:", addr); | |
507 | linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes; | |
508 | for (i = 0; i < linebytes; i += byte_size) { | |
509 | unsigned long val; | |
510 | ||
511 | #ifdef CONFIG_DM_PCI | |
512 | dm_pci_read_config(dev, addr, &val, size); | |
513 | #else | |
514 | val = pci_read_config(bdf, addr, size); | |
515 | #endif | |
516 | printf(" %0*lx", pci_field_width(size), val); | |
517 | addr += byte_size; | |
518 | } | |
519 | printf("\n"); | |
520 | nbytes -= linebytes; | |
521 | if (ctrlc()) { | |
522 | rc = 1; | |
523 | break; | |
524 | } | |
525 | } while (nbytes > 0); | |
526 | ||
527 | return (rc); | |
528 | } | |
529 | ||
530 | #ifndef CONFIG_DM_PCI | |
531 | static int pci_cfg_write (pci_dev_t bdf, ulong addr, ulong size, ulong value) | |
532 | { | |
533 | if (size == 4) { | |
534 | pci_write_config_dword(bdf, addr, value); | |
535 | } | |
536 | else if (size == 2) { | |
537 | ushort val = value & 0xffff; | |
538 | pci_write_config_word(bdf, addr, val); | |
539 | } | |
540 | else { | |
541 | u_char val = value & 0xff; | |
542 | pci_write_config_byte(bdf, addr, val); | |
543 | } | |
544 | return 0; | |
545 | } | |
546 | #endif | |
547 | ||
548 | #ifdef CONFIG_DM_PCI | |
549 | static int pci_cfg_modify(struct udevice *dev, ulong addr, ulong size, | |
550 | ulong value, int incrflag) | |
551 | #else | |
552 | static int pci_cfg_modify(pci_dev_t bdf, ulong addr, ulong size, ulong value, | |
553 | int incrflag) | |
554 | #endif | |
555 | { | |
556 | ulong i; | |
557 | int nbytes; | |
558 | ulong val; | |
559 | ||
560 | /* Print the address, followed by value. Then accept input for | |
561 | * the next value. A non-converted value exits. | |
562 | */ | |
563 | do { | |
564 | printf("%08lx:", addr); | |
565 | #ifdef CONFIG_DM_PCI | |
566 | dm_pci_read_config(dev, addr, &val, size); | |
567 | #else | |
568 | val = pci_read_config(bdf, addr, size); | |
569 | #endif | |
570 | printf(" %0*lx", pci_field_width(size), val); | |
571 | ||
572 | nbytes = cli_readline(" ? "); | |
573 | if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) { | |
574 | /* <CR> pressed as only input, don't modify current | |
575 | * location and move to next. "-" pressed will go back. | |
576 | */ | |
577 | if (incrflag) | |
578 | addr += nbytes ? -size : size; | |
579 | nbytes = 1; | |
580 | /* good enough to not time out */ | |
581 | bootretry_reset_cmd_timeout(); | |
582 | } | |
583 | #ifdef CONFIG_BOOT_RETRY_TIME | |
584 | else if (nbytes == -2) { | |
585 | break; /* timed out, exit the command */ | |
586 | } | |
587 | #endif | |
588 | else { | |
589 | char *endp; | |
590 | i = simple_strtoul(console_buffer, &endp, 16); | |
591 | nbytes = endp - console_buffer; | |
592 | if (nbytes) { | |
593 | /* good enough to not time out | |
594 | */ | |
595 | bootretry_reset_cmd_timeout(); | |
596 | #ifdef CONFIG_DM_PCI | |
597 | dm_pci_write_config(dev, addr, i, size); | |
598 | #else | |
599 | pci_cfg_write(bdf, addr, size, i); | |
600 | #endif | |
601 | if (incrflag) | |
602 | addr += size; | |
603 | } | |
604 | } | |
605 | } while (nbytes); | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
610 | #ifdef CONFIG_DM_PCI | |
611 | static const struct pci_flag_info { | |
612 | uint flag; | |
613 | const char *name; | |
614 | } pci_flag_info[] = { | |
615 | { PCI_REGION_IO, "io" }, | |
616 | { PCI_REGION_PREFETCH, "prefetch" }, | |
617 | { PCI_REGION_SYS_MEMORY, "sysmem" }, | |
618 | { PCI_REGION_RO, "readonly" }, | |
619 | { PCI_REGION_IO, "io" }, | |
620 | }; | |
621 | ||
622 | static void pci_show_regions(struct udevice *bus) | |
623 | { | |
624 | struct pci_controller *hose = dev_get_uclass_priv(bus); | |
625 | const struct pci_region *reg; | |
626 | int i, j; | |
627 | ||
628 | if (!hose) { | |
629 | printf("Bus '%s' is not a PCI controller\n", bus->name); | |
630 | return; | |
631 | } | |
632 | ||
633 | printf("# %-16s %-16s %-16s %s\n", "Bus start", "Phys start", "Size", | |
634 | "Flags"); | |
635 | for (i = 0, reg = hose->regions; i < hose->region_count; i++, reg++) { | |
636 | printf("%d %#016llx %#016llx %#016llx ", i, | |
637 | (unsigned long long)reg->bus_start, | |
638 | (unsigned long long)reg->phys_start, | |
639 | (unsigned long long)reg->size); | |
640 | if (!(reg->flags & PCI_REGION_TYPE)) | |
641 | printf("mem "); | |
642 | for (j = 0; j < ARRAY_SIZE(pci_flag_info); j++) { | |
643 | if (reg->flags & pci_flag_info[j].flag) | |
644 | printf("%s ", pci_flag_info[j].name); | |
645 | } | |
646 | printf("\n"); | |
647 | } | |
648 | } | |
649 | #endif | |
650 | ||
651 | /* PCI Configuration Space access commands | |
652 | * | |
653 | * Syntax: | |
654 | * pci display[.b, .w, .l] bus.device.function} [addr] [len] | |
655 | * pci next[.b, .w, .l] bus.device.function [addr] | |
656 | * pci modify[.b, .w, .l] bus.device.function [addr] | |
657 | * pci write[.b, .w, .l] bus.device.function addr value | |
658 | */ | |
659 | static int do_pci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
660 | { | |
661 | ulong addr = 0, value = 0, cmd_size = 0; | |
662 | enum pci_size_t size = PCI_SIZE_32; | |
663 | #ifdef CONFIG_DM_PCI | |
664 | struct udevice *dev, *bus; | |
665 | #else | |
666 | pci_dev_t dev; | |
667 | #endif | |
668 | int busnum = 0; | |
669 | pci_dev_t bdf = 0; | |
670 | char cmd = 's'; | |
671 | int ret = 0; | |
672 | ||
673 | if (argc > 1) | |
674 | cmd = argv[1][0]; | |
675 | ||
676 | switch (cmd) { | |
677 | case 'd': /* display */ | |
678 | case 'n': /* next */ | |
679 | case 'm': /* modify */ | |
680 | case 'w': /* write */ | |
681 | /* Check for a size specification. */ | |
682 | cmd_size = cmd_get_data_size(argv[1], 4); | |
683 | size = (cmd_size == 4) ? PCI_SIZE_32 : cmd_size - 1; | |
684 | if (argc > 3) | |
685 | addr = simple_strtoul(argv[3], NULL, 16); | |
686 | if (argc > 4) | |
687 | value = simple_strtoul(argv[4], NULL, 16); | |
688 | case 'h': /* header */ | |
689 | #ifdef CONFIG_DM_PCI | |
690 | case 'b': /* bars */ | |
691 | #endif | |
692 | if (argc < 3) | |
693 | goto usage; | |
694 | if ((bdf = get_pci_dev(argv[2])) == -1) | |
695 | return 1; | |
696 | break; | |
697 | #if defined(CONFIG_DM_PCI) | |
698 | case 'e': | |
699 | pci_init(); | |
700 | return 0; | |
701 | #endif | |
702 | case 'r': /* no break */ | |
703 | default: /* scan bus */ | |
704 | value = 1; /* short listing */ | |
705 | if (argc > 1) { | |
706 | if (cmd != 'r' && argv[argc-1][0] == 'l') { | |
707 | value = 0; | |
708 | argc--; | |
709 | } | |
710 | if (argc > 1) | |
711 | busnum = simple_strtoul(argv[1], NULL, 16); | |
712 | } | |
713 | #ifdef CONFIG_DM_PCI | |
714 | ret = uclass_get_device_by_seq(UCLASS_PCI, busnum, &bus); | |
715 | if (ret) { | |
716 | printf("No such bus\n"); | |
717 | return CMD_RET_FAILURE; | |
718 | } | |
719 | if (cmd == 'r') | |
720 | pci_show_regions(bus); | |
721 | else | |
722 | pciinfo(bus, value); | |
723 | #else | |
724 | pciinfo(busnum, value); | |
725 | #endif | |
726 | return 0; | |
727 | } | |
728 | ||
729 | #ifdef CONFIG_DM_PCI | |
730 | ret = dm_pci_bus_find_bdf(bdf, &dev); | |
731 | if (ret) { | |
732 | printf("No such device\n"); | |
733 | return CMD_RET_FAILURE; | |
734 | } | |
735 | #else | |
736 | dev = bdf; | |
737 | #endif | |
738 | ||
739 | switch (argv[1][0]) { | |
740 | case 'h': /* header */ | |
741 | pci_header_show(dev); | |
742 | break; | |
743 | case 'd': /* display */ | |
744 | return pci_cfg_display(dev, addr, size, value); | |
745 | case 'n': /* next */ | |
746 | if (argc < 4) | |
747 | goto usage; | |
748 | ret = pci_cfg_modify(dev, addr, size, value, 0); | |
749 | break; | |
750 | case 'm': /* modify */ | |
751 | if (argc < 4) | |
752 | goto usage; | |
753 | ret = pci_cfg_modify(dev, addr, size, value, 1); | |
754 | break; | |
755 | case 'w': /* write */ | |
756 | if (argc < 5) | |
757 | goto usage; | |
758 | #ifdef CONFIG_DM_PCI | |
759 | ret = dm_pci_write_config(dev, addr, value, size); | |
760 | #else | |
761 | ret = pci_cfg_write(dev, addr, size, value); | |
762 | #endif | |
763 | break; | |
764 | #ifdef CONFIG_DM_PCI | |
765 | ||
766 | case 'b': /* bars */ | |
767 | return pci_bar_show(dev); | |
768 | #endif | |
769 | default: | |
770 | ret = CMD_RET_USAGE; | |
771 | break; | |
772 | } | |
773 | ||
774 | return ret; | |
775 | usage: | |
776 | return CMD_RET_USAGE; | |
777 | } | |
778 | ||
779 | /***************************************************/ | |
780 | ||
781 | #ifdef CONFIG_SYS_LONGHELP | |
782 | static char pci_help_text[] = | |
783 | "[bus] [long]\n" | |
784 | " - short or long list of PCI devices on bus 'bus'\n" | |
785 | #if defined(CONFIG_DM_PCI) | |
786 | "pci enum\n" | |
787 | " - Enumerate PCI buses\n" | |
788 | #endif | |
789 | "pci header b.d.f\n" | |
790 | " - show header of PCI device 'bus.device.function'\n" | |
791 | #ifdef CONFIG_DM_PCI | |
792 | "pci bar b.d.f\n" | |
793 | " - show BARs base and size for device b.d.f'\n" | |
794 | "pci regions\n" | |
795 | " - show PCI regions\n" | |
796 | #endif | |
797 | "pci display[.b, .w, .l] b.d.f [address] [# of objects]\n" | |
798 | " - display PCI configuration space (CFG)\n" | |
799 | "pci next[.b, .w, .l] b.d.f address\n" | |
800 | " - modify, read and keep CFG address\n" | |
801 | "pci modify[.b, .w, .l] b.d.f address\n" | |
802 | " - modify, auto increment CFG address\n" | |
803 | "pci write[.b, .w, .l] b.d.f address value\n" | |
804 | " - write to CFG address"; | |
805 | #endif | |
806 | ||
807 | U_BOOT_CMD( | |
808 | pci, 5, 1, do_pci, | |
809 | "list and access PCI Configuration Space", pci_help_text | |
810 | ); |