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Merge remote branch 'mst/for_anthony' into staging
[qemu.git] / hw / pci.c
1 /*
2 * QEMU PCI bus manager
3 *
4 * Copyright (c) 2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "hw.h"
25 #include "pci.h"
26 #include "pci_bridge.h"
27 #include "pci_internals.h"
28 #include "monitor.h"
29 #include "net.h"
30 #include "sysemu.h"
31 #include "loader.h"
32 #include "qemu-objects.h"
33 #include "range.h"
34
35 //#define DEBUG_PCI
36 #ifdef DEBUG_PCI
37 # define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
38 #else
39 # define PCI_DPRINTF(format, ...) do { } while (0)
40 #endif
41
42 static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent);
43 static char *pcibus_get_dev_path(DeviceState *dev);
44 static char *pcibus_get_fw_dev_path(DeviceState *dev);
45 static int pcibus_reset(BusState *qbus);
46
47 struct BusInfo pci_bus_info = {
48 .name = "PCI",
49 .size = sizeof(PCIBus),
50 .print_dev = pcibus_dev_print,
51 .get_dev_path = pcibus_get_dev_path,
52 .get_fw_dev_path = pcibus_get_fw_dev_path,
53 .reset = pcibus_reset,
54 .props = (Property[]) {
55 DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1),
56 DEFINE_PROP_STRING("romfile", PCIDevice, romfile),
57 DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1),
58 DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present,
59 QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false),
60 DEFINE_PROP_BIT("command_serr_enable", PCIDevice, cap_present,
61 QEMU_PCI_CAP_SERR_BITNR, true),
62 DEFINE_PROP_END_OF_LIST()
63 }
64 };
65
66 static void pci_update_mappings(PCIDevice *d);
67 static void pci_set_irq(void *opaque, int irq_num, int level);
68 static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom);
69 static void pci_del_option_rom(PCIDevice *pdev);
70
71 static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
72 static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
73
74 struct PCIHostBus {
75 int domain;
76 struct PCIBus *bus;
77 QLIST_ENTRY(PCIHostBus) next;
78 };
79 static QLIST_HEAD(, PCIHostBus) host_buses;
80
81 static const VMStateDescription vmstate_pcibus = {
82 .name = "PCIBUS",
83 .version_id = 1,
84 .minimum_version_id = 1,
85 .minimum_version_id_old = 1,
86 .fields = (VMStateField []) {
87 VMSTATE_INT32_EQUAL(nirq, PCIBus),
88 VMSTATE_VARRAY_INT32(irq_count, PCIBus, nirq, 0, vmstate_info_int32, int32_t),
89 VMSTATE_END_OF_LIST()
90 }
91 };
92
93 static int pci_bar(PCIDevice *d, int reg)
94 {
95 uint8_t type;
96
97 if (reg != PCI_ROM_SLOT)
98 return PCI_BASE_ADDRESS_0 + reg * 4;
99
100 type = d->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
101 return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS;
102 }
103
104 static inline int pci_irq_state(PCIDevice *d, int irq_num)
105 {
106 return (d->irq_state >> irq_num) & 0x1;
107 }
108
109 static inline void pci_set_irq_state(PCIDevice *d, int irq_num, int level)
110 {
111 d->irq_state &= ~(0x1 << irq_num);
112 d->irq_state |= level << irq_num;
113 }
114
115 static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change)
116 {
117 PCIBus *bus;
118 for (;;) {
119 bus = pci_dev->bus;
120 irq_num = bus->map_irq(pci_dev, irq_num);
121 if (bus->set_irq)
122 break;
123 pci_dev = bus->parent_dev;
124 }
125 bus->irq_count[irq_num] += change;
126 bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
127 }
128
129 /* Update interrupt status bit in config space on interrupt
130 * state change. */
131 static void pci_update_irq_status(PCIDevice *dev)
132 {
133 if (dev->irq_state) {
134 dev->config[PCI_STATUS] |= PCI_STATUS_INTERRUPT;
135 } else {
136 dev->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT;
137 }
138 }
139
140 static void pci_device_reset(PCIDevice *dev)
141 {
142 int r;
143 /* TODO: call the below unconditionally once all pci devices
144 * are qdevified */
145 if (dev->qdev.info) {
146 qdev_reset_all(&dev->qdev);
147 }
148
149 dev->irq_state = 0;
150 pci_update_irq_status(dev);
151 /* Clear all writeable bits */
152 pci_word_test_and_clear_mask(dev->config + PCI_COMMAND,
153 pci_get_word(dev->wmask + PCI_COMMAND) |
154 pci_get_word(dev->w1cmask + PCI_COMMAND));
155 pci_word_test_and_clear_mask(dev->config + PCI_STATUS,
156 pci_get_word(dev->wmask + PCI_STATUS) |
157 pci_get_word(dev->w1cmask + PCI_STATUS));
158 dev->config[PCI_CACHE_LINE_SIZE] = 0x0;
159 dev->config[PCI_INTERRUPT_LINE] = 0x0;
160 for (r = 0; r < PCI_NUM_REGIONS; ++r) {
161 PCIIORegion *region = &dev->io_regions[r];
162 if (!region->size) {
163 continue;
164 }
165
166 if (!(region->type & PCI_BASE_ADDRESS_SPACE_IO) &&
167 region->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
168 pci_set_quad(dev->config + pci_bar(dev, r), region->type);
169 } else {
170 pci_set_long(dev->config + pci_bar(dev, r), region->type);
171 }
172 }
173 pci_update_mappings(dev);
174 }
175
176 /*
177 * Trigger pci bus reset under a given bus.
178 * To be called on RST# assert.
179 */
180 void pci_bus_reset(PCIBus *bus)
181 {
182 int i;
183
184 for (i = 0; i < bus->nirq; i++) {
185 bus->irq_count[i] = 0;
186 }
187 for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
188 if (bus->devices[i]) {
189 pci_device_reset(bus->devices[i]);
190 }
191 }
192 }
193
194 static int pcibus_reset(BusState *qbus)
195 {
196 pci_bus_reset(DO_UPCAST(PCIBus, qbus, qbus));
197
198 /* topology traverse is done by pci_bus_reset().
199 Tell qbus/qdev walker not to traverse the tree */
200 return 1;
201 }
202
203 static void pci_host_bus_register(int domain, PCIBus *bus)
204 {
205 struct PCIHostBus *host;
206 host = qemu_mallocz(sizeof(*host));
207 host->domain = domain;
208 host->bus = bus;
209 QLIST_INSERT_HEAD(&host_buses, host, next);
210 }
211
212 PCIBus *pci_find_root_bus(int domain)
213 {
214 struct PCIHostBus *host;
215
216 QLIST_FOREACH(host, &host_buses, next) {
217 if (host->domain == domain) {
218 return host->bus;
219 }
220 }
221
222 return NULL;
223 }
224
225 int pci_find_domain(const PCIBus *bus)
226 {
227 PCIDevice *d;
228 struct PCIHostBus *host;
229
230 /* obtain root bus */
231 while ((d = bus->parent_dev) != NULL) {
232 bus = d->bus;
233 }
234
235 QLIST_FOREACH(host, &host_buses, next) {
236 if (host->bus == bus) {
237 return host->domain;
238 }
239 }
240
241 abort(); /* should not be reached */
242 return -1;
243 }
244
245 void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
246 const char *name, int devfn_min)
247 {
248 qbus_create_inplace(&bus->qbus, &pci_bus_info, parent, name);
249 assert(PCI_FUNC(devfn_min) == 0);
250 bus->devfn_min = devfn_min;
251
252 /* host bridge */
253 QLIST_INIT(&bus->child);
254 pci_host_bus_register(0, bus); /* for now only pci domain 0 is supported */
255
256 vmstate_register(NULL, -1, &vmstate_pcibus, bus);
257 }
258
259 PCIBus *pci_bus_new(DeviceState *parent, const char *name, int devfn_min)
260 {
261 PCIBus *bus;
262
263 bus = qemu_mallocz(sizeof(*bus));
264 bus->qbus.qdev_allocated = 1;
265 pci_bus_new_inplace(bus, parent, name, devfn_min);
266 return bus;
267 }
268
269 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
270 void *irq_opaque, int nirq)
271 {
272 bus->set_irq = set_irq;
273 bus->map_irq = map_irq;
274 bus->irq_opaque = irq_opaque;
275 bus->nirq = nirq;
276 bus->irq_count = qemu_mallocz(nirq * sizeof(bus->irq_count[0]));
277 }
278
279 void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *qdev)
280 {
281 bus->qbus.allow_hotplug = 1;
282 bus->hotplug = hotplug;
283 bus->hotplug_qdev = qdev;
284 }
285
286 void pci_bus_set_mem_base(PCIBus *bus, target_phys_addr_t base)
287 {
288 bus->mem_base = base;
289 }
290
291 PCIBus *pci_register_bus(DeviceState *parent, const char *name,
292 pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
293 void *irq_opaque, int devfn_min, int nirq)
294 {
295 PCIBus *bus;
296
297 bus = pci_bus_new(parent, name, devfn_min);
298 pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq);
299 return bus;
300 }
301
302 int pci_bus_num(PCIBus *s)
303 {
304 if (!s->parent_dev)
305 return 0; /* pci host bridge */
306 return s->parent_dev->config[PCI_SECONDARY_BUS];
307 }
308
309 static int get_pci_config_device(QEMUFile *f, void *pv, size_t size)
310 {
311 PCIDevice *s = container_of(pv, PCIDevice, config);
312 uint8_t *config;
313 int i;
314
315 assert(size == pci_config_size(s));
316 config = qemu_malloc(size);
317
318 qemu_get_buffer(f, config, size);
319 for (i = 0; i < size; ++i) {
320 if ((config[i] ^ s->config[i]) &
321 s->cmask[i] & ~s->wmask[i] & ~s->w1cmask[i]) {
322 qemu_free(config);
323 return -EINVAL;
324 }
325 }
326 memcpy(s->config, config, size);
327
328 pci_update_mappings(s);
329
330 qemu_free(config);
331 return 0;
332 }
333
334 /* just put buffer */
335 static void put_pci_config_device(QEMUFile *f, void *pv, size_t size)
336 {
337 const uint8_t **v = pv;
338 assert(size == pci_config_size(container_of(pv, PCIDevice, config)));
339 qemu_put_buffer(f, *v, size);
340 }
341
342 static VMStateInfo vmstate_info_pci_config = {
343 .name = "pci config",
344 .get = get_pci_config_device,
345 .put = put_pci_config_device,
346 };
347
348 static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size)
349 {
350 PCIDevice *s = container_of(pv, PCIDevice, irq_state);
351 uint32_t irq_state[PCI_NUM_PINS];
352 int i;
353 for (i = 0; i < PCI_NUM_PINS; ++i) {
354 irq_state[i] = qemu_get_be32(f);
355 if (irq_state[i] != 0x1 && irq_state[i] != 0) {
356 fprintf(stderr, "irq state %d: must be 0 or 1.\n",
357 irq_state[i]);
358 return -EINVAL;
359 }
360 }
361
362 for (i = 0; i < PCI_NUM_PINS; ++i) {
363 pci_set_irq_state(s, i, irq_state[i]);
364 }
365
366 return 0;
367 }
368
369 static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size)
370 {
371 int i;
372 PCIDevice *s = container_of(pv, PCIDevice, irq_state);
373
374 for (i = 0; i < PCI_NUM_PINS; ++i) {
375 qemu_put_be32(f, pci_irq_state(s, i));
376 }
377 }
378
379 static VMStateInfo vmstate_info_pci_irq_state = {
380 .name = "pci irq state",
381 .get = get_pci_irq_state,
382 .put = put_pci_irq_state,
383 };
384
385 const VMStateDescription vmstate_pci_device = {
386 .name = "PCIDevice",
387 .version_id = 2,
388 .minimum_version_id = 1,
389 .minimum_version_id_old = 1,
390 .fields = (VMStateField []) {
391 VMSTATE_INT32_LE(version_id, PCIDevice),
392 VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
393 vmstate_info_pci_config,
394 PCI_CONFIG_SPACE_SIZE),
395 VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
396 vmstate_info_pci_irq_state,
397 PCI_NUM_PINS * sizeof(int32_t)),
398 VMSTATE_END_OF_LIST()
399 }
400 };
401
402 const VMStateDescription vmstate_pcie_device = {
403 .name = "PCIDevice",
404 .version_id = 2,
405 .minimum_version_id = 1,
406 .minimum_version_id_old = 1,
407 .fields = (VMStateField []) {
408 VMSTATE_INT32_LE(version_id, PCIDevice),
409 VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
410 vmstate_info_pci_config,
411 PCIE_CONFIG_SPACE_SIZE),
412 VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
413 vmstate_info_pci_irq_state,
414 PCI_NUM_PINS * sizeof(int32_t)),
415 VMSTATE_END_OF_LIST()
416 }
417 };
418
419 static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s)
420 {
421 return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
422 }
423
424 void pci_device_save(PCIDevice *s, QEMUFile *f)
425 {
426 /* Clear interrupt status bit: it is implicit
427 * in irq_state which we are saving.
428 * This makes us compatible with old devices
429 * which never set or clear this bit. */
430 s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT;
431 vmstate_save_state(f, pci_get_vmstate(s), s);
432 /* Restore the interrupt status bit. */
433 pci_update_irq_status(s);
434 }
435
436 int pci_device_load(PCIDevice *s, QEMUFile *f)
437 {
438 int ret;
439 ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id);
440 /* Restore the interrupt status bit. */
441 pci_update_irq_status(s);
442 return ret;
443 }
444
445 static void pci_set_default_subsystem_id(PCIDevice *pci_dev)
446 {
447 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID,
448 pci_default_sub_vendor_id);
449 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID,
450 pci_default_sub_device_id);
451 }
452
453 /*
454 * Parse [[<domain>:]<bus>:]<slot>, return -1 on error if funcp == NULL
455 * [[<domain>:]<bus>:]<slot>.<func>, return -1 on error
456 */
457 int pci_parse_devaddr(const char *addr, int *domp, int *busp,
458 unsigned int *slotp, unsigned int *funcp)
459 {
460 const char *p;
461 char *e;
462 unsigned long val;
463 unsigned long dom = 0, bus = 0;
464 unsigned int slot = 0;
465 unsigned int func = 0;
466
467 p = addr;
468 val = strtoul(p, &e, 16);
469 if (e == p)
470 return -1;
471 if (*e == ':') {
472 bus = val;
473 p = e + 1;
474 val = strtoul(p, &e, 16);
475 if (e == p)
476 return -1;
477 if (*e == ':') {
478 dom = bus;
479 bus = val;
480 p = e + 1;
481 val = strtoul(p, &e, 16);
482 if (e == p)
483 return -1;
484 }
485 }
486
487 slot = val;
488
489 if (funcp != NULL) {
490 if (*e != '.')
491 return -1;
492
493 p = e + 1;
494 val = strtoul(p, &e, 16);
495 if (e == p)
496 return -1;
497
498 func = val;
499 }
500
501 /* if funcp == NULL func is 0 */
502 if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7)
503 return -1;
504
505 if (*e)
506 return -1;
507
508 /* Note: QEMU doesn't implement domains other than 0 */
509 if (!pci_find_bus(pci_find_root_bus(dom), bus))
510 return -1;
511
512 *domp = dom;
513 *busp = bus;
514 *slotp = slot;
515 if (funcp != NULL)
516 *funcp = func;
517 return 0;
518 }
519
520 int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp,
521 unsigned *slotp)
522 {
523 /* strip legacy tag */
524 if (!strncmp(addr, "pci_addr=", 9)) {
525 addr += 9;
526 }
527 if (pci_parse_devaddr(addr, domp, busp, slotp, NULL)) {
528 monitor_printf(mon, "Invalid pci address\n");
529 return -1;
530 }
531 return 0;
532 }
533
534 PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr)
535 {
536 int dom, bus;
537 unsigned slot;
538
539 if (!devaddr) {
540 *devfnp = -1;
541 return pci_find_bus(pci_find_root_bus(0), 0);
542 }
543
544 if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) {
545 return NULL;
546 }
547
548 *devfnp = slot << 3;
549 return pci_find_bus(pci_find_root_bus(dom), bus);
550 }
551
552 static void pci_init_cmask(PCIDevice *dev)
553 {
554 pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
555 pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
556 dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST;
557 dev->cmask[PCI_REVISION_ID] = 0xff;
558 dev->cmask[PCI_CLASS_PROG] = 0xff;
559 pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
560 dev->cmask[PCI_HEADER_TYPE] = 0xff;
561 dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
562 }
563
564 static void pci_init_wmask(PCIDevice *dev)
565 {
566 int config_size = pci_config_size(dev);
567
568 dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
569 dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
570 pci_set_word(dev->wmask + PCI_COMMAND,
571 PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
572 PCI_COMMAND_INTX_DISABLE);
573 if (dev->cap_present & QEMU_PCI_CAP_SERR) {
574 pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, PCI_COMMAND_SERR);
575 }
576
577 memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff,
578 config_size - PCI_CONFIG_HEADER_SIZE);
579 }
580
581 static void pci_init_w1cmask(PCIDevice *dev)
582 {
583 /*
584 * Note: It's okay to set w1cmask even for readonly bits as
585 * long as their value is hardwired to 0.
586 */
587 pci_set_word(dev->w1cmask + PCI_STATUS,
588 PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
589 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
590 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY);
591 }
592
593 static void pci_init_wmask_bridge(PCIDevice *d)
594 {
595 /* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
596 PCI_SEC_LETENCY_TIMER */
597 memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4);
598
599 /* base and limit */
600 d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff;
601 d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff;
602 pci_set_word(d->wmask + PCI_MEMORY_BASE,
603 PCI_MEMORY_RANGE_MASK & 0xffff);
604 pci_set_word(d->wmask + PCI_MEMORY_LIMIT,
605 PCI_MEMORY_RANGE_MASK & 0xffff);
606 pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE,
607 PCI_PREF_RANGE_MASK & 0xffff);
608 pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT,
609 PCI_PREF_RANGE_MASK & 0xffff);
610
611 /* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
612 memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8);
613
614 /* TODO: add this define to pci_regs.h in linux and then in qemu. */
615 #define PCI_BRIDGE_CTL_VGA_16BIT 0x10 /* VGA 16-bit decode */
616 #define PCI_BRIDGE_CTL_DISCARD 0x100 /* Primary discard timer */
617 #define PCI_BRIDGE_CTL_SEC_DISCARD 0x200 /* Secondary discard timer */
618 #define PCI_BRIDGE_CTL_DISCARD_STATUS 0x400 /* Discard timer status */
619 #define PCI_BRIDGE_CTL_DISCARD_SERR 0x800 /* Discard timer SERR# enable */
620 pci_set_word(d->wmask + PCI_BRIDGE_CONTROL,
621 PCI_BRIDGE_CTL_PARITY |
622 PCI_BRIDGE_CTL_SERR |
623 PCI_BRIDGE_CTL_ISA |
624 PCI_BRIDGE_CTL_VGA |
625 PCI_BRIDGE_CTL_VGA_16BIT |
626 PCI_BRIDGE_CTL_MASTER_ABORT |
627 PCI_BRIDGE_CTL_BUS_RESET |
628 PCI_BRIDGE_CTL_FAST_BACK |
629 PCI_BRIDGE_CTL_DISCARD |
630 PCI_BRIDGE_CTL_SEC_DISCARD |
631 PCI_BRIDGE_CTL_DISCARD_STATUS |
632 PCI_BRIDGE_CTL_DISCARD_SERR);
633 /* Below does not do anything as we never set this bit, put here for
634 * completeness. */
635 pci_set_word(d->w1cmask + PCI_BRIDGE_CONTROL,
636 PCI_BRIDGE_CTL_DISCARD_STATUS);
637 }
638
639 static int pci_init_multifunction(PCIBus *bus, PCIDevice *dev)
640 {
641 uint8_t slot = PCI_SLOT(dev->devfn);
642 uint8_t func;
643
644 if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
645 dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION;
646 }
647
648 /*
649 * multifunction bit is interpreted in two ways as follows.
650 * - all functions must set the bit to 1.
651 * Example: Intel X53
652 * - function 0 must set the bit, but the rest function (> 0)
653 * is allowed to leave the bit to 0.
654 * Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10,
655 *
656 * So OS (at least Linux) checks the bit of only function 0,
657 * and doesn't see the bit of function > 0.
658 *
659 * The below check allows both interpretation.
660 */
661 if (PCI_FUNC(dev->devfn)) {
662 PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)];
663 if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) {
664 /* function 0 should set multifunction bit */
665 error_report("PCI: single function device can't be populated "
666 "in function %x.%x", slot, PCI_FUNC(dev->devfn));
667 return -1;
668 }
669 return 0;
670 }
671
672 if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
673 return 0;
674 }
675 /* function 0 indicates single function, so function > 0 must be NULL */
676 for (func = 1; func < PCI_FUNC_MAX; ++func) {
677 if (bus->devices[PCI_DEVFN(slot, func)]) {
678 error_report("PCI: %x.0 indicates single function, "
679 "but %x.%x is already populated.",
680 slot, slot, func);
681 return -1;
682 }
683 }
684 return 0;
685 }
686
687 static void pci_config_alloc(PCIDevice *pci_dev)
688 {
689 int config_size = pci_config_size(pci_dev);
690
691 pci_dev->config = qemu_mallocz(config_size);
692 pci_dev->cmask = qemu_mallocz(config_size);
693 pci_dev->wmask = qemu_mallocz(config_size);
694 pci_dev->w1cmask = qemu_mallocz(config_size);
695 pci_dev->used = qemu_mallocz(config_size);
696 }
697
698 static void pci_config_free(PCIDevice *pci_dev)
699 {
700 qemu_free(pci_dev->config);
701 qemu_free(pci_dev->cmask);
702 qemu_free(pci_dev->wmask);
703 qemu_free(pci_dev->w1cmask);
704 qemu_free(pci_dev->used);
705 }
706
707 /* -1 for devfn means auto assign */
708 static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
709 const char *name, int devfn,
710 PCIConfigReadFunc *config_read,
711 PCIConfigWriteFunc *config_write,
712 bool is_bridge)
713 {
714 if (devfn < 0) {
715 for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);
716 devfn += PCI_FUNC_MAX) {
717 if (!bus->devices[devfn])
718 goto found;
719 }
720 error_report("PCI: no slot/function available for %s, all in use", name);
721 return NULL;
722 found: ;
723 } else if (bus->devices[devfn]) {
724 error_report("PCI: slot %d function %d not available for %s, in use by %s",
725 PCI_SLOT(devfn), PCI_FUNC(devfn), name, bus->devices[devfn]->name);
726 return NULL;
727 }
728 pci_dev->bus = bus;
729 pci_dev->devfn = devfn;
730 pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
731 pci_dev->irq_state = 0;
732 pci_config_alloc(pci_dev);
733
734 if (!is_bridge) {
735 pci_set_default_subsystem_id(pci_dev);
736 }
737 pci_init_cmask(pci_dev);
738 pci_init_wmask(pci_dev);
739 pci_init_w1cmask(pci_dev);
740 if (is_bridge) {
741 pci_init_wmask_bridge(pci_dev);
742 }
743 if (pci_init_multifunction(bus, pci_dev)) {
744 pci_config_free(pci_dev);
745 return NULL;
746 }
747
748 if (!config_read)
749 config_read = pci_default_read_config;
750 if (!config_write)
751 config_write = pci_default_write_config;
752 pci_dev->config_read = config_read;
753 pci_dev->config_write = config_write;
754 bus->devices[devfn] = pci_dev;
755 pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS);
756 pci_dev->version_id = 2; /* Current pci device vmstate version */
757 return pci_dev;
758 }
759
760 static void do_pci_unregister_device(PCIDevice *pci_dev)
761 {
762 qemu_free_irqs(pci_dev->irq);
763 pci_dev->bus->devices[pci_dev->devfn] = NULL;
764 pci_config_free(pci_dev);
765 }
766
767 PCIDevice *pci_register_device(PCIBus *bus, const char *name,
768 int instance_size, int devfn,
769 PCIConfigReadFunc *config_read,
770 PCIConfigWriteFunc *config_write)
771 {
772 PCIDevice *pci_dev;
773
774 pci_dev = qemu_mallocz(instance_size);
775 pci_dev = do_pci_register_device(pci_dev, bus, name, devfn,
776 config_read, config_write,
777 PCI_HEADER_TYPE_NORMAL);
778 if (pci_dev == NULL) {
779 hw_error("PCI: can't register device\n");
780 }
781 return pci_dev;
782 }
783
784 static target_phys_addr_t pci_to_cpu_addr(PCIBus *bus,
785 target_phys_addr_t addr)
786 {
787 return addr + bus->mem_base;
788 }
789
790 static void pci_unregister_io_regions(PCIDevice *pci_dev)
791 {
792 PCIIORegion *r;
793 int i;
794
795 for(i = 0; i < PCI_NUM_REGIONS; i++) {
796 r = &pci_dev->io_regions[i];
797 if (!r->size || r->addr == PCI_BAR_UNMAPPED)
798 continue;
799 if (r->type == PCI_BASE_ADDRESS_SPACE_IO) {
800 isa_unassign_ioport(r->addr, r->filtered_size);
801 } else {
802 cpu_register_physical_memory(pci_to_cpu_addr(pci_dev->bus,
803 r->addr),
804 r->filtered_size,
805 IO_MEM_UNASSIGNED);
806 }
807 }
808 }
809
810 static int pci_unregister_device(DeviceState *dev)
811 {
812 PCIDevice *pci_dev = DO_UPCAST(PCIDevice, qdev, dev);
813 PCIDeviceInfo *info = DO_UPCAST(PCIDeviceInfo, qdev, dev->info);
814 int ret = 0;
815
816 if (info->exit)
817 ret = info->exit(pci_dev);
818 if (ret)
819 return ret;
820
821 pci_unregister_io_regions(pci_dev);
822 pci_del_option_rom(pci_dev);
823 do_pci_unregister_device(pci_dev);
824 return 0;
825 }
826
827 void pci_register_bar(PCIDevice *pci_dev, int region_num,
828 pcibus_t size, uint8_t type,
829 PCIMapIORegionFunc *map_func)
830 {
831 PCIIORegion *r;
832 uint32_t addr;
833 uint64_t wmask;
834
835 assert(region_num >= 0);
836 assert(region_num < PCI_NUM_REGIONS);
837 if (size & (size-1)) {
838 fprintf(stderr, "ERROR: PCI region size must be pow2 "
839 "type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size);
840 exit(1);
841 }
842
843 r = &pci_dev->io_regions[region_num];
844 r->addr = PCI_BAR_UNMAPPED;
845 r->size = size;
846 r->filtered_size = size;
847 r->type = type;
848 r->map_func = map_func;
849
850 wmask = ~(size - 1);
851 addr = pci_bar(pci_dev, region_num);
852 if (region_num == PCI_ROM_SLOT) {
853 /* ROM enable bit is writeable */
854 wmask |= PCI_ROM_ADDRESS_ENABLE;
855 }
856 pci_set_long(pci_dev->config + addr, type);
857 if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
858 r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
859 pci_set_quad(pci_dev->wmask + addr, wmask);
860 pci_set_quad(pci_dev->cmask + addr, ~0ULL);
861 } else {
862 pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
863 pci_set_long(pci_dev->cmask + addr, 0xffffffff);
864 }
865 }
866
867 static void pci_bridge_filter(PCIDevice *d, pcibus_t *addr, pcibus_t *size,
868 uint8_t type)
869 {
870 pcibus_t base = *addr;
871 pcibus_t limit = *addr + *size - 1;
872 PCIDevice *br;
873
874 for (br = d->bus->parent_dev; br; br = br->bus->parent_dev) {
875 uint16_t cmd = pci_get_word(d->config + PCI_COMMAND);
876
877 if (type & PCI_BASE_ADDRESS_SPACE_IO) {
878 if (!(cmd & PCI_COMMAND_IO)) {
879 goto no_map;
880 }
881 } else {
882 if (!(cmd & PCI_COMMAND_MEMORY)) {
883 goto no_map;
884 }
885 }
886
887 base = MAX(base, pci_bridge_get_base(br, type));
888 limit = MIN(limit, pci_bridge_get_limit(br, type));
889 }
890
891 if (base > limit) {
892 goto no_map;
893 }
894 *addr = base;
895 *size = limit - base + 1;
896 return;
897 no_map:
898 *addr = PCI_BAR_UNMAPPED;
899 *size = 0;
900 }
901
902 static pcibus_t pci_bar_address(PCIDevice *d,
903 int reg, uint8_t type, pcibus_t size)
904 {
905 pcibus_t new_addr, last_addr;
906 int bar = pci_bar(d, reg);
907 uint16_t cmd = pci_get_word(d->config + PCI_COMMAND);
908
909 if (type & PCI_BASE_ADDRESS_SPACE_IO) {
910 if (!(cmd & PCI_COMMAND_IO)) {
911 return PCI_BAR_UNMAPPED;
912 }
913 new_addr = pci_get_long(d->config + bar) & ~(size - 1);
914 last_addr = new_addr + size - 1;
915 /* NOTE: we have only 64K ioports on PC */
916 if (last_addr <= new_addr || new_addr == 0 || last_addr > UINT16_MAX) {
917 return PCI_BAR_UNMAPPED;
918 }
919 return new_addr;
920 }
921
922 if (!(cmd & PCI_COMMAND_MEMORY)) {
923 return PCI_BAR_UNMAPPED;
924 }
925 if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
926 new_addr = pci_get_quad(d->config + bar);
927 } else {
928 new_addr = pci_get_long(d->config + bar);
929 }
930 /* the ROM slot has a specific enable bit */
931 if (reg == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) {
932 return PCI_BAR_UNMAPPED;
933 }
934 new_addr &= ~(size - 1);
935 last_addr = new_addr + size - 1;
936 /* NOTE: we do not support wrapping */
937 /* XXX: as we cannot support really dynamic
938 mappings, we handle specific values as invalid
939 mappings. */
940 if (last_addr <= new_addr || new_addr == 0 ||
941 last_addr == PCI_BAR_UNMAPPED) {
942 return PCI_BAR_UNMAPPED;
943 }
944
945 /* Now pcibus_t is 64bit.
946 * Check if 32 bit BAR wraps around explicitly.
947 * Without this, PC ide doesn't work well.
948 * TODO: remove this work around.
949 */
950 if (!(type & PCI_BASE_ADDRESS_MEM_TYPE_64) && last_addr >= UINT32_MAX) {
951 return PCI_BAR_UNMAPPED;
952 }
953
954 /*
955 * OS is allowed to set BAR beyond its addressable
956 * bits. For example, 32 bit OS can set 64bit bar
957 * to >4G. Check it. TODO: we might need to support
958 * it in the future for e.g. PAE.
959 */
960 if (last_addr >= TARGET_PHYS_ADDR_MAX) {
961 return PCI_BAR_UNMAPPED;
962 }
963
964 return new_addr;
965 }
966
967 static void pci_update_mappings(PCIDevice *d)
968 {
969 PCIIORegion *r;
970 int i;
971 pcibus_t new_addr, filtered_size;
972
973 for(i = 0; i < PCI_NUM_REGIONS; i++) {
974 r = &d->io_regions[i];
975
976 /* this region isn't registered */
977 if (!r->size)
978 continue;
979
980 new_addr = pci_bar_address(d, i, r->type, r->size);
981
982 /* bridge filtering */
983 filtered_size = r->size;
984 if (new_addr != PCI_BAR_UNMAPPED) {
985 pci_bridge_filter(d, &new_addr, &filtered_size, r->type);
986 }
987
988 /* This bar isn't changed */
989 if (new_addr == r->addr && filtered_size == r->filtered_size)
990 continue;
991
992 /* now do the real mapping */
993 if (r->addr != PCI_BAR_UNMAPPED) {
994 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
995 int class;
996 /* NOTE: specific hack for IDE in PC case:
997 only one byte must be mapped. */
998 class = pci_get_word(d->config + PCI_CLASS_DEVICE);
999 if (class == 0x0101 && r->size == 4) {
1000 isa_unassign_ioport(r->addr + 2, 1);
1001 } else {
1002 isa_unassign_ioport(r->addr, r->filtered_size);
1003 }
1004 } else {
1005 cpu_register_physical_memory(pci_to_cpu_addr(d->bus, r->addr),
1006 r->filtered_size,
1007 IO_MEM_UNASSIGNED);
1008 qemu_unregister_coalesced_mmio(r->addr, r->filtered_size);
1009 }
1010 }
1011 r->addr = new_addr;
1012 r->filtered_size = filtered_size;
1013 if (r->addr != PCI_BAR_UNMAPPED) {
1014 /*
1015 * TODO: currently almost all the map funcions assumes
1016 * filtered_size == size and addr & ~(size - 1) == addr.
1017 * However with bridge filtering, they aren't always true.
1018 * Teach them such cases, such that filtered_size < size and
1019 * addr & (size - 1) != 0.
1020 */
1021 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
1022 r->map_func(d, i, r->addr, r->filtered_size, r->type);
1023 } else {
1024 r->map_func(d, i, pci_to_cpu_addr(d->bus, r->addr),
1025 r->filtered_size, r->type);
1026 }
1027 }
1028 }
1029 }
1030
1031 static inline int pci_irq_disabled(PCIDevice *d)
1032 {
1033 return pci_get_word(d->config + PCI_COMMAND) & PCI_COMMAND_INTX_DISABLE;
1034 }
1035
1036 /* Called after interrupt disabled field update in config space,
1037 * assert/deassert interrupts if necessary.
1038 * Gets original interrupt disable bit value (before update). */
1039 static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled)
1040 {
1041 int i, disabled = pci_irq_disabled(d);
1042 if (disabled == was_irq_disabled)
1043 return;
1044 for (i = 0; i < PCI_NUM_PINS; ++i) {
1045 int state = pci_irq_state(d, i);
1046 pci_change_irq_level(d, i, disabled ? -state : state);
1047 }
1048 }
1049
1050 uint32_t pci_default_read_config(PCIDevice *d,
1051 uint32_t address, int len)
1052 {
1053 uint32_t val = 0;
1054 assert(len == 1 || len == 2 || len == 4);
1055 len = MIN(len, pci_config_size(d) - address);
1056 memcpy(&val, d->config + address, len);
1057 return le32_to_cpu(val);
1058 }
1059
1060 void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l)
1061 {
1062 int i, was_irq_disabled = pci_irq_disabled(d);
1063 uint32_t config_size = pci_config_size(d);
1064
1065 for (i = 0; i < l && addr + i < config_size; val >>= 8, ++i) {
1066 uint8_t wmask = d->wmask[addr + i];
1067 uint8_t w1cmask = d->w1cmask[addr + i];
1068 assert(!(wmask & w1cmask));
1069 d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask);
1070 d->config[addr + i] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */
1071 }
1072 if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) ||
1073 ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) ||
1074 ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) ||
1075 range_covers_byte(addr, l, PCI_COMMAND))
1076 pci_update_mappings(d);
1077
1078 if (range_covers_byte(addr, l, PCI_COMMAND))
1079 pci_update_irq_disabled(d, was_irq_disabled);
1080 }
1081
1082 /***********************************************************/
1083 /* generic PCI irq support */
1084
1085 /* 0 <= irq_num <= 3. level must be 0 or 1 */
1086 static void pci_set_irq(void *opaque, int irq_num, int level)
1087 {
1088 PCIDevice *pci_dev = opaque;
1089 int change;
1090
1091 change = level - pci_irq_state(pci_dev, irq_num);
1092 if (!change)
1093 return;
1094
1095 pci_set_irq_state(pci_dev, irq_num, level);
1096 pci_update_irq_status(pci_dev);
1097 if (pci_irq_disabled(pci_dev))
1098 return;
1099 pci_change_irq_level(pci_dev, irq_num, change);
1100 }
1101
1102 /***********************************************************/
1103 /* monitor info on PCI */
1104
1105 typedef struct {
1106 uint16_t class;
1107 const char *desc;
1108 const char *fw_name;
1109 uint16_t fw_ign_bits;
1110 } pci_class_desc;
1111
1112 static const pci_class_desc pci_class_descriptions[] =
1113 {
1114 { 0x0001, "VGA controller", "display"},
1115 { 0x0100, "SCSI controller", "scsi"},
1116 { 0x0101, "IDE controller", "ide"},
1117 { 0x0102, "Floppy controller", "fdc"},
1118 { 0x0103, "IPI controller", "ipi"},
1119 { 0x0104, "RAID controller", "raid"},
1120 { 0x0106, "SATA controller"},
1121 { 0x0107, "SAS controller"},
1122 { 0x0180, "Storage controller"},
1123 { 0x0200, "Ethernet controller", "ethernet"},
1124 { 0x0201, "Token Ring controller", "token-ring"},
1125 { 0x0202, "FDDI controller", "fddi"},
1126 { 0x0203, "ATM controller", "atm"},
1127 { 0x0280, "Network controller"},
1128 { 0x0300, "VGA controller", "display", 0x00ff},
1129 { 0x0301, "XGA controller"},
1130 { 0x0302, "3D controller"},
1131 { 0x0380, "Display controller"},
1132 { 0x0400, "Video controller", "video"},
1133 { 0x0401, "Audio controller", "sound"},
1134 { 0x0402, "Phone"},
1135 { 0x0480, "Multimedia controller"},
1136 { 0x0500, "RAM controller", "memory"},
1137 { 0x0501, "Flash controller", "flash"},
1138 { 0x0580, "Memory controller"},
1139 { 0x0600, "Host bridge", "host"},
1140 { 0x0601, "ISA bridge", "isa"},
1141 { 0x0602, "EISA bridge", "eisa"},
1142 { 0x0603, "MC bridge", "mca"},
1143 { 0x0604, "PCI bridge", "pci"},
1144 { 0x0605, "PCMCIA bridge", "pcmcia"},
1145 { 0x0606, "NUBUS bridge", "nubus"},
1146 { 0x0607, "CARDBUS bridge", "cardbus"},
1147 { 0x0608, "RACEWAY bridge"},
1148 { 0x0680, "Bridge"},
1149 { 0x0700, "Serial port", "serial"},
1150 { 0x0701, "Parallel port", "parallel"},
1151 { 0x0800, "Interrupt controller", "interrupt-controller"},
1152 { 0x0801, "DMA controller", "dma-controller"},
1153 { 0x0802, "Timer", "timer"},
1154 { 0x0803, "RTC", "rtc"},
1155 { 0x0900, "Keyboard", "keyboard"},
1156 { 0x0901, "Pen", "pen"},
1157 { 0x0902, "Mouse", "mouse"},
1158 { 0x0A00, "Dock station", "dock", 0x00ff},
1159 { 0x0B00, "i386 cpu", "cpu", 0x00ff},
1160 { 0x0c00, "Fireware contorller", "fireware"},
1161 { 0x0c01, "Access bus controller", "access-bus"},
1162 { 0x0c02, "SSA controller", "ssa"},
1163 { 0x0c03, "USB controller", "usb"},
1164 { 0x0c04, "Fibre channel controller", "fibre-channel"},
1165 { 0, NULL}
1166 };
1167
1168 static void pci_for_each_device_under_bus(PCIBus *bus,
1169 void (*fn)(PCIBus *b, PCIDevice *d))
1170 {
1171 PCIDevice *d;
1172 int devfn;
1173
1174 for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
1175 d = bus->devices[devfn];
1176 if (d) {
1177 fn(bus, d);
1178 }
1179 }
1180 }
1181
1182 void pci_for_each_device(PCIBus *bus, int bus_num,
1183 void (*fn)(PCIBus *b, PCIDevice *d))
1184 {
1185 bus = pci_find_bus(bus, bus_num);
1186
1187 if (bus) {
1188 pci_for_each_device_under_bus(bus, fn);
1189 }
1190 }
1191
1192 static void pci_device_print(Monitor *mon, QDict *device)
1193 {
1194 QDict *qdict;
1195 QListEntry *entry;
1196 uint64_t addr, size;
1197
1198 monitor_printf(mon, " Bus %2" PRId64 ", ", qdict_get_int(device, "bus"));
1199 monitor_printf(mon, "device %3" PRId64 ", function %" PRId64 ":\n",
1200 qdict_get_int(device, "slot"),
1201 qdict_get_int(device, "function"));
1202 monitor_printf(mon, " ");
1203
1204 qdict = qdict_get_qdict(device, "class_info");
1205 if (qdict_haskey(qdict, "desc")) {
1206 monitor_printf(mon, "%s", qdict_get_str(qdict, "desc"));
1207 } else {
1208 monitor_printf(mon, "Class %04" PRId64, qdict_get_int(qdict, "class"));
1209 }
1210
1211 qdict = qdict_get_qdict(device, "id");
1212 monitor_printf(mon, ": PCI device %04" PRIx64 ":%04" PRIx64 "\n",
1213 qdict_get_int(qdict, "device"),
1214 qdict_get_int(qdict, "vendor"));
1215
1216 if (qdict_haskey(device, "irq")) {
1217 monitor_printf(mon, " IRQ %" PRId64 ".\n",
1218 qdict_get_int(device, "irq"));
1219 }
1220
1221 if (qdict_haskey(device, "pci_bridge")) {
1222 QDict *info;
1223
1224 qdict = qdict_get_qdict(device, "pci_bridge");
1225
1226 info = qdict_get_qdict(qdict, "bus");
1227 monitor_printf(mon, " BUS %" PRId64 ".\n",
1228 qdict_get_int(info, "number"));
1229 monitor_printf(mon, " secondary bus %" PRId64 ".\n",
1230 qdict_get_int(info, "secondary"));
1231 monitor_printf(mon, " subordinate bus %" PRId64 ".\n",
1232 qdict_get_int(info, "subordinate"));
1233
1234 info = qdict_get_qdict(qdict, "io_range");
1235 monitor_printf(mon, " IO range [0x%04"PRIx64", 0x%04"PRIx64"]\n",
1236 qdict_get_int(info, "base"),
1237 qdict_get_int(info, "limit"));
1238
1239 info = qdict_get_qdict(qdict, "memory_range");
1240 monitor_printf(mon,
1241 " memory range [0x%08"PRIx64", 0x%08"PRIx64"]\n",
1242 qdict_get_int(info, "base"),
1243 qdict_get_int(info, "limit"));
1244
1245 info = qdict_get_qdict(qdict, "prefetchable_range");
1246 monitor_printf(mon, " prefetchable memory range "
1247 "[0x%08"PRIx64", 0x%08"PRIx64"]\n",
1248 qdict_get_int(info, "base"),
1249 qdict_get_int(info, "limit"));
1250 }
1251
1252 QLIST_FOREACH_ENTRY(qdict_get_qlist(device, "regions"), entry) {
1253 qdict = qobject_to_qdict(qlist_entry_obj(entry));
1254 monitor_printf(mon, " BAR%d: ", (int) qdict_get_int(qdict, "bar"));
1255
1256 addr = qdict_get_int(qdict, "address");
1257 size = qdict_get_int(qdict, "size");
1258
1259 if (!strcmp(qdict_get_str(qdict, "type"), "io")) {
1260 monitor_printf(mon, "I/O at 0x%04"FMT_PCIBUS
1261 " [0x%04"FMT_PCIBUS"].\n",
1262 addr, addr + size - 1);
1263 } else {
1264 monitor_printf(mon, "%d bit%s memory at 0x%08"FMT_PCIBUS
1265 " [0x%08"FMT_PCIBUS"].\n",
1266 qdict_get_bool(qdict, "mem_type_64") ? 64 : 32,
1267 qdict_get_bool(qdict, "prefetch") ?
1268 " prefetchable" : "", addr, addr + size - 1);
1269 }
1270 }
1271
1272 monitor_printf(mon, " id \"%s\"\n", qdict_get_str(device, "qdev_id"));
1273
1274 if (qdict_haskey(device, "pci_bridge")) {
1275 qdict = qdict_get_qdict(device, "pci_bridge");
1276 if (qdict_haskey(qdict, "devices")) {
1277 QListEntry *dev;
1278 QLIST_FOREACH_ENTRY(qdict_get_qlist(qdict, "devices"), dev) {
1279 pci_device_print(mon, qobject_to_qdict(qlist_entry_obj(dev)));
1280 }
1281 }
1282 }
1283 }
1284
1285 void do_pci_info_print(Monitor *mon, const QObject *data)
1286 {
1287 QListEntry *bus, *dev;
1288
1289 QLIST_FOREACH_ENTRY(qobject_to_qlist(data), bus) {
1290 QDict *qdict = qobject_to_qdict(qlist_entry_obj(bus));
1291 QLIST_FOREACH_ENTRY(qdict_get_qlist(qdict, "devices"), dev) {
1292 pci_device_print(mon, qobject_to_qdict(qlist_entry_obj(dev)));
1293 }
1294 }
1295 }
1296
1297 static QObject *pci_get_dev_class(const PCIDevice *dev)
1298 {
1299 int class;
1300 const pci_class_desc *desc;
1301
1302 class = pci_get_word(dev->config + PCI_CLASS_DEVICE);
1303 desc = pci_class_descriptions;
1304 while (desc->desc && class != desc->class)
1305 desc++;
1306
1307 if (desc->desc) {
1308 return qobject_from_jsonf("{ 'desc': %s, 'class': %d }",
1309 desc->desc, class);
1310 } else {
1311 return qobject_from_jsonf("{ 'class': %d }", class);
1312 }
1313 }
1314
1315 static QObject *pci_get_dev_id(const PCIDevice *dev)
1316 {
1317 return qobject_from_jsonf("{ 'device': %d, 'vendor': %d }",
1318 pci_get_word(dev->config + PCI_VENDOR_ID),
1319 pci_get_word(dev->config + PCI_DEVICE_ID));
1320 }
1321
1322 static QObject *pci_get_regions_list(const PCIDevice *dev)
1323 {
1324 int i;
1325 QList *regions_list;
1326
1327 regions_list = qlist_new();
1328
1329 for (i = 0; i < PCI_NUM_REGIONS; i++) {
1330 QObject *obj;
1331 const PCIIORegion *r = &dev->io_regions[i];
1332
1333 if (!r->size) {
1334 continue;
1335 }
1336
1337 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
1338 obj = qobject_from_jsonf("{ 'bar': %d, 'type': 'io', "
1339 "'address': %" PRId64 ", "
1340 "'size': %" PRId64 " }",
1341 i, r->addr, r->size);
1342 } else {
1343 int mem_type_64 = r->type & PCI_BASE_ADDRESS_MEM_TYPE_64;
1344
1345 obj = qobject_from_jsonf("{ 'bar': %d, 'type': 'memory', "
1346 "'mem_type_64': %i, 'prefetch': %i, "
1347 "'address': %" PRId64 ", "
1348 "'size': %" PRId64 " }",
1349 i, mem_type_64,
1350 r->type & PCI_BASE_ADDRESS_MEM_PREFETCH,
1351 r->addr, r->size);
1352 }
1353
1354 qlist_append_obj(regions_list, obj);
1355 }
1356
1357 return QOBJECT(regions_list);
1358 }
1359
1360 static QObject *pci_get_devices_list(PCIBus *bus, int bus_num);
1361
1362 static QObject *pci_get_dev_dict(PCIDevice *dev, PCIBus *bus, int bus_num)
1363 {
1364 uint8_t type;
1365 QObject *obj;
1366
1367 obj = qobject_from_jsonf("{ 'bus': %d, 'slot': %d, 'function': %d," "'class_info': %p, 'id': %p, 'regions': %p,"
1368 " 'qdev_id': %s }",
1369 bus_num,
1370 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn),
1371 pci_get_dev_class(dev), pci_get_dev_id(dev),
1372 pci_get_regions_list(dev),
1373 dev->qdev.id ? dev->qdev.id : "");
1374
1375 if (dev->config[PCI_INTERRUPT_PIN] != 0) {
1376 QDict *qdict = qobject_to_qdict(obj);
1377 qdict_put(qdict, "irq", qint_from_int(dev->config[PCI_INTERRUPT_LINE]));
1378 }
1379
1380 type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
1381 if (type == PCI_HEADER_TYPE_BRIDGE) {
1382 QDict *qdict;
1383 QObject *pci_bridge;
1384
1385 pci_bridge = qobject_from_jsonf("{ 'bus': "
1386 "{ 'number': %d, 'secondary': %d, 'subordinate': %d }, "
1387 "'io_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "}, "
1388 "'memory_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "}, "
1389 "'prefetchable_range': { 'base': %" PRId64 ", 'limit': %" PRId64 "} }",
1390 dev->config[PCI_PRIMARY_BUS], dev->config[PCI_SECONDARY_BUS],
1391 dev->config[PCI_SUBORDINATE_BUS],
1392 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO),
1393 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO),
1394 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY),
1395 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY),
1396 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY |
1397 PCI_BASE_ADDRESS_MEM_PREFETCH),
1398 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY |
1399 PCI_BASE_ADDRESS_MEM_PREFETCH));
1400
1401 if (dev->config[PCI_SECONDARY_BUS] != 0) {
1402 PCIBus *child_bus = pci_find_bus(bus, dev->config[PCI_SECONDARY_BUS]);
1403
1404 if (child_bus) {
1405 qdict = qobject_to_qdict(pci_bridge);
1406 qdict_put_obj(qdict, "devices",
1407 pci_get_devices_list(child_bus,
1408 dev->config[PCI_SECONDARY_BUS]));
1409 }
1410 }
1411 qdict = qobject_to_qdict(obj);
1412 qdict_put_obj(qdict, "pci_bridge", pci_bridge);
1413 }
1414
1415 return obj;
1416 }
1417
1418 static QObject *pci_get_devices_list(PCIBus *bus, int bus_num)
1419 {
1420 int devfn;
1421 PCIDevice *dev;
1422 QList *dev_list;
1423
1424 dev_list = qlist_new();
1425
1426 for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
1427 dev = bus->devices[devfn];
1428 if (dev) {
1429 qlist_append_obj(dev_list, pci_get_dev_dict(dev, bus, bus_num));
1430 }
1431 }
1432
1433 return QOBJECT(dev_list);
1434 }
1435
1436 static QObject *pci_get_bus_dict(PCIBus *bus, int bus_num)
1437 {
1438 bus = pci_find_bus(bus, bus_num);
1439 if (bus) {
1440 return qobject_from_jsonf("{ 'bus': %d, 'devices': %p }",
1441 bus_num, pci_get_devices_list(bus, bus_num));
1442 }
1443
1444 return NULL;
1445 }
1446
1447 void do_pci_info(Monitor *mon, QObject **ret_data)
1448 {
1449 QList *bus_list;
1450 struct PCIHostBus *host;
1451
1452 bus_list = qlist_new();
1453
1454 QLIST_FOREACH(host, &host_buses, next) {
1455 QObject *obj = pci_get_bus_dict(host->bus, 0);
1456 if (obj) {
1457 qlist_append_obj(bus_list, obj);
1458 }
1459 }
1460
1461 *ret_data = QOBJECT(bus_list);
1462 }
1463
1464 static const char * const pci_nic_models[] = {
1465 "ne2k_pci",
1466 "i82551",
1467 "i82557b",
1468 "i82559er",
1469 "rtl8139",
1470 "e1000",
1471 "pcnet",
1472 "virtio",
1473 NULL
1474 };
1475
1476 static const char * const pci_nic_names[] = {
1477 "ne2k_pci",
1478 "i82551",
1479 "i82557b",
1480 "i82559er",
1481 "rtl8139",
1482 "e1000",
1483 "pcnet",
1484 "virtio-net-pci",
1485 NULL
1486 };
1487
1488 /* Initialize a PCI NIC. */
1489 /* FIXME callers should check for failure, but don't */
1490 PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model,
1491 const char *default_devaddr)
1492 {
1493 const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr;
1494 PCIBus *bus;
1495 int devfn;
1496 PCIDevice *pci_dev;
1497 DeviceState *dev;
1498 int i;
1499
1500 i = qemu_find_nic_model(nd, pci_nic_models, default_model);
1501 if (i < 0)
1502 return NULL;
1503
1504 bus = pci_get_bus_devfn(&devfn, devaddr);
1505 if (!bus) {
1506 error_report("Invalid PCI device address %s for device %s",
1507 devaddr, pci_nic_names[i]);
1508 return NULL;
1509 }
1510
1511 pci_dev = pci_create(bus, devfn, pci_nic_names[i]);
1512 dev = &pci_dev->qdev;
1513 qdev_set_nic_properties(dev, nd);
1514 if (qdev_init(dev) < 0)
1515 return NULL;
1516 return pci_dev;
1517 }
1518
1519 PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model,
1520 const char *default_devaddr)
1521 {
1522 PCIDevice *res;
1523
1524 if (qemu_show_nic_models(nd->model, pci_nic_models))
1525 exit(0);
1526
1527 res = pci_nic_init(nd, default_model, default_devaddr);
1528 if (!res)
1529 exit(1);
1530 return res;
1531 }
1532
1533 static void pci_bridge_update_mappings_fn(PCIBus *b, PCIDevice *d)
1534 {
1535 pci_update_mappings(d);
1536 }
1537
1538 void pci_bridge_update_mappings(PCIBus *b)
1539 {
1540 PCIBus *child;
1541
1542 pci_for_each_device_under_bus(b, pci_bridge_update_mappings_fn);
1543
1544 QLIST_FOREACH(child, &b->child, sibling) {
1545 pci_bridge_update_mappings(child);
1546 }
1547 }
1548
1549 /* Whether a given bus number is in range of the secondary
1550 * bus of the given bridge device. */
1551 static bool pci_secondary_bus_in_range(PCIDevice *dev, int bus_num)
1552 {
1553 return !(pci_get_word(dev->config + PCI_BRIDGE_CONTROL) &
1554 PCI_BRIDGE_CTL_BUS_RESET) /* Don't walk the bus if it's reset. */ &&
1555 dev->config[PCI_SECONDARY_BUS] < bus_num &&
1556 bus_num <= dev->config[PCI_SUBORDINATE_BUS];
1557 }
1558
1559 PCIBus *pci_find_bus(PCIBus *bus, int bus_num)
1560 {
1561 PCIBus *sec;
1562
1563 if (!bus) {
1564 return NULL;
1565 }
1566
1567 if (pci_bus_num(bus) == bus_num) {
1568 return bus;
1569 }
1570
1571 /* Consider all bus numbers in range for the host pci bridge. */
1572 if (bus->parent_dev &&
1573 !pci_secondary_bus_in_range(bus->parent_dev, bus_num)) {
1574 return NULL;
1575 }
1576
1577 /* try child bus */
1578 for (; bus; bus = sec) {
1579 QLIST_FOREACH(sec, &bus->child, sibling) {
1580 assert(sec->parent_dev);
1581 if (sec->parent_dev->config[PCI_SECONDARY_BUS] == bus_num) {
1582 return sec;
1583 }
1584 if (pci_secondary_bus_in_range(sec->parent_dev, bus_num)) {
1585 break;
1586 }
1587 }
1588 }
1589
1590 return NULL;
1591 }
1592
1593 PCIDevice *pci_find_device(PCIBus *bus, int bus_num, int slot, int function)
1594 {
1595 bus = pci_find_bus(bus, bus_num);
1596
1597 if (!bus)
1598 return NULL;
1599
1600 return bus->devices[PCI_DEVFN(slot, function)];
1601 }
1602
1603 static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
1604 {
1605 PCIDevice *pci_dev = (PCIDevice *)qdev;
1606 PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev);
1607 PCIBus *bus;
1608 int devfn, rc;
1609 bool is_default_rom;
1610
1611 /* initialize cap_present for pci_is_express() and pci_config_size() */
1612 if (info->is_express) {
1613 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
1614 }
1615
1616 bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev));
1617 devfn = pci_dev->devfn;
1618 pci_dev = do_pci_register_device(pci_dev, bus, base->name, devfn,
1619 info->config_read, info->config_write,
1620 info->is_bridge);
1621 if (pci_dev == NULL)
1622 return -1;
1623 rc = info->init(pci_dev);
1624 if (rc != 0) {
1625 do_pci_unregister_device(pci_dev);
1626 return rc;
1627 }
1628
1629 /* rom loading */
1630 is_default_rom = false;
1631 if (pci_dev->romfile == NULL && info->romfile != NULL) {
1632 pci_dev->romfile = qemu_strdup(info->romfile);
1633 is_default_rom = true;
1634 }
1635 pci_add_option_rom(pci_dev, is_default_rom);
1636
1637 if (bus->hotplug) {
1638 /* Let buses differentiate between hotplug and when device is
1639 * enabled during qemu machine creation. */
1640 rc = bus->hotplug(bus->hotplug_qdev, pci_dev,
1641 qdev->hotplugged ? PCI_HOTPLUG_ENABLED:
1642 PCI_COLDPLUG_ENABLED);
1643 if (rc != 0) {
1644 int r = pci_unregister_device(&pci_dev->qdev);
1645 assert(!r);
1646 return rc;
1647 }
1648 }
1649 return 0;
1650 }
1651
1652 static int pci_unplug_device(DeviceState *qdev)
1653 {
1654 PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev);
1655
1656 return dev->bus->hotplug(dev->bus->hotplug_qdev, dev,
1657 PCI_HOTPLUG_DISABLED);
1658 }
1659
1660 void pci_qdev_register(PCIDeviceInfo *info)
1661 {
1662 info->qdev.init = pci_qdev_init;
1663 info->qdev.unplug = pci_unplug_device;
1664 info->qdev.exit = pci_unregister_device;
1665 info->qdev.bus_info = &pci_bus_info;
1666 qdev_register(&info->qdev);
1667 }
1668
1669 void pci_qdev_register_many(PCIDeviceInfo *info)
1670 {
1671 while (info->qdev.name) {
1672 pci_qdev_register(info);
1673 info++;
1674 }
1675 }
1676
1677 PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
1678 const char *name)
1679 {
1680 DeviceState *dev;
1681
1682 dev = qdev_create(&bus->qbus, name);
1683 qdev_prop_set_uint32(dev, "addr", devfn);
1684 qdev_prop_set_bit(dev, "multifunction", multifunction);
1685 return DO_UPCAST(PCIDevice, qdev, dev);
1686 }
1687
1688 PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
1689 bool multifunction,
1690 const char *name)
1691 {
1692 PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name);
1693 qdev_init_nofail(&dev->qdev);
1694 return dev;
1695 }
1696
1697 PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name)
1698 {
1699 return pci_create_multifunction(bus, devfn, false, name);
1700 }
1701
1702 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name)
1703 {
1704 return pci_create_simple_multifunction(bus, devfn, false, name);
1705 }
1706
1707 static int pci_find_space(PCIDevice *pdev, uint8_t size)
1708 {
1709 int config_size = pci_config_size(pdev);
1710 int offset = PCI_CONFIG_HEADER_SIZE;
1711 int i;
1712 for (i = PCI_CONFIG_HEADER_SIZE; i < config_size; ++i)
1713 if (pdev->used[i])
1714 offset = i + 1;
1715 else if (i - offset + 1 == size)
1716 return offset;
1717 return 0;
1718 }
1719
1720 static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
1721 uint8_t *prev_p)
1722 {
1723 uint8_t next, prev;
1724
1725 if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
1726 return 0;
1727
1728 for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
1729 prev = next + PCI_CAP_LIST_NEXT)
1730 if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
1731 break;
1732
1733 if (prev_p)
1734 *prev_p = prev;
1735 return next;
1736 }
1737
1738 static void pci_map_option_rom(PCIDevice *pdev, int region_num, pcibus_t addr, pcibus_t size, int type)
1739 {
1740 cpu_register_physical_memory(addr, size, pdev->rom_offset);
1741 }
1742
1743 /* Patch the PCI vendor and device ids in a PCI rom image if necessary.
1744 This is needed for an option rom which is used for more than one device. */
1745 static void pci_patch_ids(PCIDevice *pdev, uint8_t *ptr, int size)
1746 {
1747 uint16_t vendor_id;
1748 uint16_t device_id;
1749 uint16_t rom_vendor_id;
1750 uint16_t rom_device_id;
1751 uint16_t rom_magic;
1752 uint16_t pcir_offset;
1753 uint8_t checksum;
1754
1755 /* Words in rom data are little endian (like in PCI configuration),
1756 so they can be read / written with pci_get_word / pci_set_word. */
1757
1758 /* Only a valid rom will be patched. */
1759 rom_magic = pci_get_word(ptr);
1760 if (rom_magic != 0xaa55) {
1761 PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic);
1762 return;
1763 }
1764 pcir_offset = pci_get_word(ptr + 0x18);
1765 if (pcir_offset + 8 >= size || memcmp(ptr + pcir_offset, "PCIR", 4)) {
1766 PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset);
1767 return;
1768 }
1769
1770 vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID);
1771 device_id = pci_get_word(pdev->config + PCI_DEVICE_ID);
1772 rom_vendor_id = pci_get_word(ptr + pcir_offset + 4);
1773 rom_device_id = pci_get_word(ptr + pcir_offset + 6);
1774
1775 PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev->romfile,
1776 vendor_id, device_id, rom_vendor_id, rom_device_id);
1777
1778 checksum = ptr[6];
1779
1780 if (vendor_id != rom_vendor_id) {
1781 /* Patch vendor id and checksum (at offset 6 for etherboot roms). */
1782 checksum += (uint8_t)rom_vendor_id + (uint8_t)(rom_vendor_id >> 8);
1783 checksum -= (uint8_t)vendor_id + (uint8_t)(vendor_id >> 8);
1784 PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum);
1785 ptr[6] = checksum;
1786 pci_set_word(ptr + pcir_offset + 4, vendor_id);
1787 }
1788
1789 if (device_id != rom_device_id) {
1790 /* Patch device id and checksum (at offset 6 for etherboot roms). */
1791 checksum += (uint8_t)rom_device_id + (uint8_t)(rom_device_id >> 8);
1792 checksum -= (uint8_t)device_id + (uint8_t)(device_id >> 8);
1793 PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum);
1794 ptr[6] = checksum;
1795 pci_set_word(ptr + pcir_offset + 6, device_id);
1796 }
1797 }
1798
1799 /* Add an option rom for the device */
1800 static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom)
1801 {
1802 int size;
1803 char *path;
1804 void *ptr;
1805 char name[32];
1806
1807 if (!pdev->romfile)
1808 return 0;
1809 if (strlen(pdev->romfile) == 0)
1810 return 0;
1811
1812 if (!pdev->rom_bar) {
1813 /*
1814 * Load rom via fw_cfg instead of creating a rom bar,
1815 * for 0.11 compatibility.
1816 */
1817 int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
1818 if (class == 0x0300) {
1819 rom_add_vga(pdev->romfile);
1820 } else {
1821 rom_add_option(pdev->romfile, -1);
1822 }
1823 return 0;
1824 }
1825
1826 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile);
1827 if (path == NULL) {
1828 path = qemu_strdup(pdev->romfile);
1829 }
1830
1831 size = get_image_size(path);
1832 if (size < 0) {
1833 error_report("%s: failed to find romfile \"%s\"",
1834 __FUNCTION__, pdev->romfile);
1835 return -1;
1836 }
1837 if (size & (size - 1)) {
1838 size = 1 << qemu_fls(size);
1839 }
1840
1841 if (pdev->qdev.info->vmsd)
1842 snprintf(name, sizeof(name), "%s.rom", pdev->qdev.info->vmsd->name);
1843 else
1844 snprintf(name, sizeof(name), "%s.rom", pdev->qdev.info->name);
1845 pdev->rom_offset = qemu_ram_alloc(&pdev->qdev, name, size);
1846
1847 ptr = qemu_get_ram_ptr(pdev->rom_offset);
1848 load_image(path, ptr);
1849 qemu_free(path);
1850
1851 if (is_default_rom) {
1852 /* Only the default rom images will be patched (if needed). */
1853 pci_patch_ids(pdev, ptr, size);
1854 }
1855
1856 pci_register_bar(pdev, PCI_ROM_SLOT, size,
1857 0, pci_map_option_rom);
1858
1859 return 0;
1860 }
1861
1862 static void pci_del_option_rom(PCIDevice *pdev)
1863 {
1864 if (!pdev->rom_offset)
1865 return;
1866
1867 qemu_ram_free(pdev->rom_offset);
1868 pdev->rom_offset = 0;
1869 }
1870
1871 /*
1872 * if !offset
1873 * Reserve space and add capability to the linked list in pci config space
1874 *
1875 * if offset = 0,
1876 * Find and reserve space and add capability to the linked list
1877 * in pci config space */
1878 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
1879 uint8_t offset, uint8_t size)
1880 {
1881 uint8_t *config;
1882 if (!offset) {
1883 offset = pci_find_space(pdev, size);
1884 if (!offset) {
1885 return -ENOSPC;
1886 }
1887 }
1888
1889 config = pdev->config + offset;
1890 config[PCI_CAP_LIST_ID] = cap_id;
1891 config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST];
1892 pdev->config[PCI_CAPABILITY_LIST] = offset;
1893 pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST;
1894 memset(pdev->used + offset, 0xFF, size);
1895 /* Make capability read-only by default */
1896 memset(pdev->wmask + offset, 0, size);
1897 /* Check capability by default */
1898 memset(pdev->cmask + offset, 0xFF, size);
1899 return offset;
1900 }
1901
1902 /* Unlink capability from the pci config space. */
1903 void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
1904 {
1905 uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev);
1906 if (!offset)
1907 return;
1908 pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT];
1909 /* Make capability writeable again */
1910 memset(pdev->wmask + offset, 0xff, size);
1911 memset(pdev->w1cmask + offset, 0, size);
1912 /* Clear cmask as device-specific registers can't be checked */
1913 memset(pdev->cmask + offset, 0, size);
1914 memset(pdev->used + offset, 0, size);
1915
1916 if (!pdev->config[PCI_CAPABILITY_LIST])
1917 pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST;
1918 }
1919
1920 /* Reserve space for capability at a known offset (to call after load). */
1921 void pci_reserve_capability(PCIDevice *pdev, uint8_t offset, uint8_t size)
1922 {
1923 memset(pdev->used + offset, 0xff, size);
1924 }
1925
1926 uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id)
1927 {
1928 return pci_find_capability_list(pdev, cap_id, NULL);
1929 }
1930
1931 static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
1932 {
1933 PCIDevice *d = (PCIDevice *)dev;
1934 const pci_class_desc *desc;
1935 char ctxt[64];
1936 PCIIORegion *r;
1937 int i, class;
1938
1939 class = pci_get_word(d->config + PCI_CLASS_DEVICE);
1940 desc = pci_class_descriptions;
1941 while (desc->desc && class != desc->class)
1942 desc++;
1943 if (desc->desc) {
1944 snprintf(ctxt, sizeof(ctxt), "%s", desc->desc);
1945 } else {
1946 snprintf(ctxt, sizeof(ctxt), "Class %04x", class);
1947 }
1948
1949 monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
1950 "pci id %04x:%04x (sub %04x:%04x)\n",
1951 indent, "", ctxt, pci_bus_num(d->bus),
1952 PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
1953 pci_get_word(d->config + PCI_VENDOR_ID),
1954 pci_get_word(d->config + PCI_DEVICE_ID),
1955 pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID),
1956 pci_get_word(d->config + PCI_SUBSYSTEM_ID));
1957 for (i = 0; i < PCI_NUM_REGIONS; i++) {
1958 r = &d->io_regions[i];
1959 if (!r->size)
1960 continue;
1961 monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS
1962 " [0x%"FMT_PCIBUS"]\n",
1963 indent, "",
1964 i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem",
1965 r->addr, r->addr + r->size - 1);
1966 }
1967 }
1968
1969 static char *pci_dev_fw_name(DeviceState *dev, char *buf, int len)
1970 {
1971 PCIDevice *d = (PCIDevice *)dev;
1972 const char *name = NULL;
1973 const pci_class_desc *desc = pci_class_descriptions;
1974 int class = pci_get_word(d->config + PCI_CLASS_DEVICE);
1975
1976 while (desc->desc &&
1977 (class & ~desc->fw_ign_bits) !=
1978 (desc->class & ~desc->fw_ign_bits)) {
1979 desc++;
1980 }
1981
1982 if (desc->desc) {
1983 name = desc->fw_name;
1984 }
1985
1986 if (name) {
1987 pstrcpy(buf, len, name);
1988 } else {
1989 snprintf(buf, len, "pci%04x,%04x",
1990 pci_get_word(d->config + PCI_VENDOR_ID),
1991 pci_get_word(d->config + PCI_DEVICE_ID));
1992 }
1993
1994 return buf;
1995 }
1996
1997 static char *pcibus_get_fw_dev_path(DeviceState *dev)
1998 {
1999 PCIDevice *d = (PCIDevice *)dev;
2000 char path[50], name[33];
2001 int off;
2002
2003 off = snprintf(path, sizeof(path), "%s@%x",
2004 pci_dev_fw_name(dev, name, sizeof name),
2005 PCI_SLOT(d->devfn));
2006 if (PCI_FUNC(d->devfn))
2007 snprintf(path + off, sizeof(path) + off, ",%x", PCI_FUNC(d->devfn));
2008 return strdup(path);
2009 }
2010
2011 static char *pcibus_get_dev_path(DeviceState *dev)
2012 {
2013 PCIDevice *d = (PCIDevice *)dev;
2014 char path[16];
2015
2016 snprintf(path, sizeof(path), "%04x:%02x:%02x.%x",
2017 pci_find_domain(d->bus), d->config[PCI_SECONDARY_BUS],
2018 PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
2019
2020 return strdup(path);
2021 }
2022
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