4 * Copyright (c) 2004 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
25 #include "hw/pci/pci.h"
26 #include "hw/pci/pci_bridge.h"
27 #include "hw/pci/pci_bus.h"
28 #include "hw/pci/pci_host.h"
29 #include "monitor/monitor.h"
31 #include "sysemu/sysemu.h"
32 #include "hw/loader.h"
33 #include "qemu/range.h"
34 #include "qmp-commands.h"
35 #include "hw/pci/msi.h"
36 #include "hw/pci/msix.h"
37 #include "exec/address-spaces.h"
38 #include "hw/hotplug.h"
42 # define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
44 # define PCI_DPRINTF(format, ...) do { } while (0)
47 static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent);
48 static char *pcibus_get_dev_path(DeviceState *dev);
49 static char *pcibus_get_fw_dev_path(DeviceState *dev);
50 static void pcibus_reset(BusState *qbus);
52 static Property pci_props[] = {
53 DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1),
54 DEFINE_PROP_STRING("romfile", PCIDevice, romfile),
55 DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1),
56 DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present,
57 QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false),
58 DEFINE_PROP_BIT("command_serr_enable", PCIDevice, cap_present,
59 QEMU_PCI_CAP_SERR_BITNR, true),
60 DEFINE_PROP_END_OF_LIST()
63 static const VMStateDescription vmstate_pcibus = {
66 .minimum_version_id = 1,
67 .fields = (VMStateField[]) {
68 VMSTATE_INT32_EQUAL(nirq, PCIBus),
69 VMSTATE_VARRAY_INT32(irq_count, PCIBus,
70 nirq, 0, vmstate_info_int32,
76 static void pci_bus_realize(BusState *qbus, Error **errp)
78 PCIBus *bus = PCI_BUS(qbus);
80 vmstate_register(NULL, -1, &vmstate_pcibus, bus);
83 static void pci_bus_unrealize(BusState *qbus, Error **errp)
85 PCIBus *bus = PCI_BUS(qbus);
87 vmstate_unregister(NULL, &vmstate_pcibus, bus);
90 static void pci_bus_class_init(ObjectClass *klass, void *data)
92 BusClass *k = BUS_CLASS(klass);
94 k->print_dev = pcibus_dev_print;
95 k->get_dev_path = pcibus_get_dev_path;
96 k->get_fw_dev_path = pcibus_get_fw_dev_path;
97 k->realize = pci_bus_realize;
98 k->unrealize = pci_bus_unrealize;
99 k->reset = pcibus_reset;
102 static const TypeInfo pci_bus_info = {
103 .name = TYPE_PCI_BUS,
105 .instance_size = sizeof(PCIBus),
106 .class_init = pci_bus_class_init,
109 static const TypeInfo pcie_bus_info = {
110 .name = TYPE_PCIE_BUS,
111 .parent = TYPE_PCI_BUS,
114 static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num);
115 static void pci_update_mappings(PCIDevice *d);
116 static void pci_irq_handler(void *opaque, int irq_num, int level);
117 static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom);
118 static void pci_del_option_rom(PCIDevice *pdev);
120 static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
121 static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
123 static QLIST_HEAD(, PCIHostState) pci_host_bridges;
125 static int pci_bar(PCIDevice *d, int reg)
129 if (reg != PCI_ROM_SLOT)
130 return PCI_BASE_ADDRESS_0 + reg * 4;
132 type = d->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
133 return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS;
136 static inline int pci_irq_state(PCIDevice *d, int irq_num)
138 return (d->irq_state >> irq_num) & 0x1;
141 static inline void pci_set_irq_state(PCIDevice *d, int irq_num, int level)
143 d->irq_state &= ~(0x1 << irq_num);
144 d->irq_state |= level << irq_num;
147 static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change)
152 irq_num = bus->map_irq(pci_dev, irq_num);
155 pci_dev = bus->parent_dev;
157 bus->irq_count[irq_num] += change;
158 bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
161 int pci_bus_get_irq_level(PCIBus *bus, int irq_num)
163 assert(irq_num >= 0);
164 assert(irq_num < bus->nirq);
165 return !!bus->irq_count[irq_num];
168 /* Update interrupt status bit in config space on interrupt
170 static void pci_update_irq_status(PCIDevice *dev)
172 if (dev->irq_state) {
173 dev->config[PCI_STATUS] |= PCI_STATUS_INTERRUPT;
175 dev->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT;
179 void pci_device_deassert_intx(PCIDevice *dev)
182 for (i = 0; i < PCI_NUM_PINS; ++i) {
183 pci_irq_handler(dev, i, 0);
187 static void pci_do_device_reset(PCIDevice *dev)
191 pci_device_deassert_intx(dev);
192 assert(dev->irq_state == 0);
194 /* Clear all writable bits */
195 pci_word_test_and_clear_mask(dev->config + PCI_COMMAND,
196 pci_get_word(dev->wmask + PCI_COMMAND) |
197 pci_get_word(dev->w1cmask + PCI_COMMAND));
198 pci_word_test_and_clear_mask(dev->config + PCI_STATUS,
199 pci_get_word(dev->wmask + PCI_STATUS) |
200 pci_get_word(dev->w1cmask + PCI_STATUS));
201 dev->config[PCI_CACHE_LINE_SIZE] = 0x0;
202 dev->config[PCI_INTERRUPT_LINE] = 0x0;
203 for (r = 0; r < PCI_NUM_REGIONS; ++r) {
204 PCIIORegion *region = &dev->io_regions[r];
209 if (!(region->type & PCI_BASE_ADDRESS_SPACE_IO) &&
210 region->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
211 pci_set_quad(dev->config + pci_bar(dev, r), region->type);
213 pci_set_long(dev->config + pci_bar(dev, r), region->type);
216 pci_update_mappings(dev);
223 * This function is called on #RST and FLR.
224 * FLR if PCI_EXP_DEVCTL_BCR_FLR is set
226 void pci_device_reset(PCIDevice *dev)
228 qdev_reset_all(&dev->qdev);
229 pci_do_device_reset(dev);
233 * Trigger pci bus reset under a given bus.
234 * Called via qbus_reset_all on RST# assert, after the devices
235 * have been reset qdev_reset_all-ed already.
237 static void pcibus_reset(BusState *qbus)
239 PCIBus *bus = DO_UPCAST(PCIBus, qbus, qbus);
242 for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
243 if (bus->devices[i]) {
244 pci_do_device_reset(bus->devices[i]);
248 for (i = 0; i < bus->nirq; i++) {
249 assert(bus->irq_count[i] == 0);
253 static void pci_host_bus_register(PCIBus *bus, DeviceState *parent)
255 PCIHostState *host_bridge = PCI_HOST_BRIDGE(parent);
257 QLIST_INSERT_HEAD(&pci_host_bridges, host_bridge, next);
260 PCIBus *pci_find_primary_bus(void)
262 PCIBus *primary_bus = NULL;
265 QLIST_FOREACH(host, &pci_host_bridges, next) {
267 /* We have multiple root buses, refuse to select a primary */
270 primary_bus = host->bus;
276 PCIBus *pci_device_root_bus(const PCIDevice *d)
278 PCIBus *bus = d->bus;
280 while ((d = bus->parent_dev) != NULL) {
287 const char *pci_root_bus_path(PCIDevice *dev)
289 PCIBus *rootbus = pci_device_root_bus(dev);
290 PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent);
291 PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge);
293 assert(!rootbus->parent_dev);
294 assert(host_bridge->bus == rootbus);
296 if (hc->root_bus_path) {
297 return (*hc->root_bus_path)(host_bridge, rootbus);
300 return rootbus->qbus.name;
303 static void pci_bus_init(PCIBus *bus, DeviceState *parent,
305 MemoryRegion *address_space_mem,
306 MemoryRegion *address_space_io,
309 assert(PCI_FUNC(devfn_min) == 0);
310 bus->devfn_min = devfn_min;
311 bus->address_space_mem = address_space_mem;
312 bus->address_space_io = address_space_io;
315 QLIST_INIT(&bus->child);
317 pci_host_bus_register(bus, parent);
320 bool pci_bus_is_express(PCIBus *bus)
322 return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS);
325 bool pci_bus_is_root(PCIBus *bus)
327 return !bus->parent_dev;
330 void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent,
332 MemoryRegion *address_space_mem,
333 MemoryRegion *address_space_io,
334 uint8_t devfn_min, const char *typename)
336 qbus_create_inplace(bus, bus_size, typename, parent, name);
337 pci_bus_init(bus, parent, name, address_space_mem,
338 address_space_io, devfn_min);
341 PCIBus *pci_bus_new(DeviceState *parent, const char *name,
342 MemoryRegion *address_space_mem,
343 MemoryRegion *address_space_io,
344 uint8_t devfn_min, const char *typename)
348 bus = PCI_BUS(qbus_create(typename, parent, name));
349 pci_bus_init(bus, parent, name, address_space_mem,
350 address_space_io, devfn_min);
354 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
355 void *irq_opaque, int nirq)
357 bus->set_irq = set_irq;
358 bus->map_irq = map_irq;
359 bus->irq_opaque = irq_opaque;
361 bus->irq_count = g_malloc0(nirq * sizeof(bus->irq_count[0]));
364 PCIBus *pci_register_bus(DeviceState *parent, const char *name,
365 pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
367 MemoryRegion *address_space_mem,
368 MemoryRegion *address_space_io,
369 uint8_t devfn_min, int nirq, const char *typename)
373 bus = pci_bus_new(parent, name, address_space_mem,
374 address_space_io, devfn_min, typename);
375 pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq);
379 int pci_bus_num(PCIBus *s)
381 if (pci_bus_is_root(s))
382 return 0; /* pci host bridge */
383 return s->parent_dev->config[PCI_SECONDARY_BUS];
386 static int get_pci_config_device(QEMUFile *f, void *pv, size_t size)
388 PCIDevice *s = container_of(pv, PCIDevice, config);
389 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(s);
393 assert(size == pci_config_size(s));
394 config = g_malloc(size);
396 qemu_get_buffer(f, config, size);
397 for (i = 0; i < size; ++i) {
398 if ((config[i] ^ s->config[i]) &
399 s->cmask[i] & ~s->wmask[i] & ~s->w1cmask[i]) {
404 memcpy(s->config, config, size);
406 pci_update_mappings(s);
408 PCIBridge *b = PCI_BRIDGE(s);
409 pci_bridge_update_mappings(b);
412 memory_region_set_enabled(&s->bus_master_enable_region,
413 pci_get_word(s->config + PCI_COMMAND)
414 & PCI_COMMAND_MASTER);
420 /* just put buffer */
421 static void put_pci_config_device(QEMUFile *f, void *pv, size_t size)
423 const uint8_t **v = pv;
424 assert(size == pci_config_size(container_of(pv, PCIDevice, config)));
425 qemu_put_buffer(f, *v, size);
428 static VMStateInfo vmstate_info_pci_config = {
429 .name = "pci config",
430 .get = get_pci_config_device,
431 .put = put_pci_config_device,
434 static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size)
436 PCIDevice *s = container_of(pv, PCIDevice, irq_state);
437 uint32_t irq_state[PCI_NUM_PINS];
439 for (i = 0; i < PCI_NUM_PINS; ++i) {
440 irq_state[i] = qemu_get_be32(f);
441 if (irq_state[i] != 0x1 && irq_state[i] != 0) {
442 fprintf(stderr, "irq state %d: must be 0 or 1.\n",
448 for (i = 0; i < PCI_NUM_PINS; ++i) {
449 pci_set_irq_state(s, i, irq_state[i]);
455 static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size)
458 PCIDevice *s = container_of(pv, PCIDevice, irq_state);
460 for (i = 0; i < PCI_NUM_PINS; ++i) {
461 qemu_put_be32(f, pci_irq_state(s, i));
465 static VMStateInfo vmstate_info_pci_irq_state = {
466 .name = "pci irq state",
467 .get = get_pci_irq_state,
468 .put = put_pci_irq_state,
471 const VMStateDescription vmstate_pci_device = {
474 .minimum_version_id = 1,
475 .fields = (VMStateField[]) {
476 VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice),
477 VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
478 vmstate_info_pci_config,
479 PCI_CONFIG_SPACE_SIZE),
480 VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
481 vmstate_info_pci_irq_state,
482 PCI_NUM_PINS * sizeof(int32_t)),
483 VMSTATE_END_OF_LIST()
487 const VMStateDescription vmstate_pcie_device = {
488 .name = "PCIEDevice",
490 .minimum_version_id = 1,
491 .fields = (VMStateField[]) {
492 VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice),
493 VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
494 vmstate_info_pci_config,
495 PCIE_CONFIG_SPACE_SIZE),
496 VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
497 vmstate_info_pci_irq_state,
498 PCI_NUM_PINS * sizeof(int32_t)),
499 VMSTATE_END_OF_LIST()
503 static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s)
505 return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
508 void pci_device_save(PCIDevice *s, QEMUFile *f)
510 /* Clear interrupt status bit: it is implicit
511 * in irq_state which we are saving.
512 * This makes us compatible with old devices
513 * which never set or clear this bit. */
514 s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT;
515 vmstate_save_state(f, pci_get_vmstate(s), s);
516 /* Restore the interrupt status bit. */
517 pci_update_irq_status(s);
520 int pci_device_load(PCIDevice *s, QEMUFile *f)
523 ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id);
524 /* Restore the interrupt status bit. */
525 pci_update_irq_status(s);
529 static void pci_set_default_subsystem_id(PCIDevice *pci_dev)
531 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID,
532 pci_default_sub_vendor_id);
533 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID,
534 pci_default_sub_device_id);
538 * Parse [[<domain>:]<bus>:]<slot>, return -1 on error if funcp == NULL
539 * [[<domain>:]<bus>:]<slot>.<func>, return -1 on error
541 int pci_parse_devaddr(const char *addr, int *domp, int *busp,
542 unsigned int *slotp, unsigned int *funcp)
547 unsigned long dom = 0, bus = 0;
548 unsigned int slot = 0;
549 unsigned int func = 0;
552 val = strtoul(p, &e, 16);
558 val = strtoul(p, &e, 16);
565 val = strtoul(p, &e, 16);
578 val = strtoul(p, &e, 16);
585 /* if funcp == NULL func is 0 */
586 if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7)
600 PCIBus *pci_get_bus_devfn(int *devfnp, PCIBus *root, const char *devaddr)
606 fprintf(stderr, "No primary PCI bus\n");
610 assert(!root->parent_dev);
614 return pci_find_bus_nr(root, 0);
617 if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) {
622 fprintf(stderr, "No support for non-zero PCI domains\n");
626 *devfnp = PCI_DEVFN(slot, 0);
627 return pci_find_bus_nr(root, bus);
630 static void pci_init_cmask(PCIDevice *dev)
632 pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
633 pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
634 dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST;
635 dev->cmask[PCI_REVISION_ID] = 0xff;
636 dev->cmask[PCI_CLASS_PROG] = 0xff;
637 pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
638 dev->cmask[PCI_HEADER_TYPE] = 0xff;
639 dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
642 static void pci_init_wmask(PCIDevice *dev)
644 int config_size = pci_config_size(dev);
646 dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
647 dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
648 pci_set_word(dev->wmask + PCI_COMMAND,
649 PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
650 PCI_COMMAND_INTX_DISABLE);
651 if (dev->cap_present & QEMU_PCI_CAP_SERR) {
652 pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, PCI_COMMAND_SERR);
655 memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff,
656 config_size - PCI_CONFIG_HEADER_SIZE);
659 static void pci_init_w1cmask(PCIDevice *dev)
662 * Note: It's okay to set w1cmask even for readonly bits as
663 * long as their value is hardwired to 0.
665 pci_set_word(dev->w1cmask + PCI_STATUS,
666 PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
667 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
668 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY);
671 static void pci_init_mask_bridge(PCIDevice *d)
673 /* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
674 PCI_SEC_LETENCY_TIMER */
675 memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4);
678 d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff;
679 d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff;
680 pci_set_word(d->wmask + PCI_MEMORY_BASE,
681 PCI_MEMORY_RANGE_MASK & 0xffff);
682 pci_set_word(d->wmask + PCI_MEMORY_LIMIT,
683 PCI_MEMORY_RANGE_MASK & 0xffff);
684 pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE,
685 PCI_PREF_RANGE_MASK & 0xffff);
686 pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT,
687 PCI_PREF_RANGE_MASK & 0xffff);
689 /* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
690 memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8);
692 /* Supported memory and i/o types */
693 d->config[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_16;
694 d->config[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_16;
695 pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_BASE,
696 PCI_PREF_RANGE_TYPE_64);
697 pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_LIMIT,
698 PCI_PREF_RANGE_TYPE_64);
701 * TODO: Bridges default to 10-bit VGA decoding but we currently only
702 * implement 16-bit decoding (no alias support).
704 pci_set_word(d->wmask + PCI_BRIDGE_CONTROL,
705 PCI_BRIDGE_CTL_PARITY |
706 PCI_BRIDGE_CTL_SERR |
709 PCI_BRIDGE_CTL_VGA_16BIT |
710 PCI_BRIDGE_CTL_MASTER_ABORT |
711 PCI_BRIDGE_CTL_BUS_RESET |
712 PCI_BRIDGE_CTL_FAST_BACK |
713 PCI_BRIDGE_CTL_DISCARD |
714 PCI_BRIDGE_CTL_SEC_DISCARD |
715 PCI_BRIDGE_CTL_DISCARD_SERR);
716 /* Below does not do anything as we never set this bit, put here for
718 pci_set_word(d->w1cmask + PCI_BRIDGE_CONTROL,
719 PCI_BRIDGE_CTL_DISCARD_STATUS);
720 d->cmask[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_MASK;
721 d->cmask[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_MASK;
722 pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_BASE,
723 PCI_PREF_RANGE_TYPE_MASK);
724 pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_LIMIT,
725 PCI_PREF_RANGE_TYPE_MASK);
728 static int pci_init_multifunction(PCIBus *bus, PCIDevice *dev)
730 uint8_t slot = PCI_SLOT(dev->devfn);
733 if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
734 dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION;
738 * multifunction bit is interpreted in two ways as follows.
739 * - all functions must set the bit to 1.
741 * - function 0 must set the bit, but the rest function (> 0)
742 * is allowed to leave the bit to 0.
743 * Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10,
745 * So OS (at least Linux) checks the bit of only function 0,
746 * and doesn't see the bit of function > 0.
748 * The below check allows both interpretation.
750 if (PCI_FUNC(dev->devfn)) {
751 PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)];
752 if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) {
753 /* function 0 should set multifunction bit */
754 error_report("PCI: single function device can't be populated "
755 "in function %x.%x", slot, PCI_FUNC(dev->devfn));
761 if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
764 /* function 0 indicates single function, so function > 0 must be NULL */
765 for (func = 1; func < PCI_FUNC_MAX; ++func) {
766 if (bus->devices[PCI_DEVFN(slot, func)]) {
767 error_report("PCI: %x.0 indicates single function, "
768 "but %x.%x is already populated.",
776 static void pci_config_alloc(PCIDevice *pci_dev)
778 int config_size = pci_config_size(pci_dev);
780 pci_dev->config = g_malloc0(config_size);
781 pci_dev->cmask = g_malloc0(config_size);
782 pci_dev->wmask = g_malloc0(config_size);
783 pci_dev->w1cmask = g_malloc0(config_size);
784 pci_dev->used = g_malloc0(config_size);
787 static void pci_config_free(PCIDevice *pci_dev)
789 g_free(pci_dev->config);
790 g_free(pci_dev->cmask);
791 g_free(pci_dev->wmask);
792 g_free(pci_dev->w1cmask);
793 g_free(pci_dev->used);
796 static void do_pci_unregister_device(PCIDevice *pci_dev)
798 pci_dev->bus->devices[pci_dev->devfn] = NULL;
799 pci_config_free(pci_dev);
801 address_space_destroy(&pci_dev->bus_master_as);
804 /* -1 for devfn means auto assign */
805 static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
806 const char *name, int devfn)
808 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
809 PCIConfigReadFunc *config_read = pc->config_read;
810 PCIConfigWriteFunc *config_write = pc->config_write;
811 AddressSpace *dma_as;
814 for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);
815 devfn += PCI_FUNC_MAX) {
816 if (!bus->devices[devfn])
819 error_report("PCI: no slot/function available for %s, all in use", name);
822 } else if (bus->devices[devfn]) {
823 error_report("PCI: slot %d function %d not available for %s, in use by %s",
824 PCI_SLOT(devfn), PCI_FUNC(devfn), name, bus->devices[devfn]->name);
829 pci_dev->devfn = devfn;
830 dma_as = pci_device_iommu_address_space(pci_dev);
832 memory_region_init_alias(&pci_dev->bus_master_enable_region,
833 OBJECT(pci_dev), "bus master",
834 dma_as->root, 0, memory_region_size(dma_as->root));
835 memory_region_set_enabled(&pci_dev->bus_master_enable_region, false);
836 address_space_init(&pci_dev->bus_master_as, &pci_dev->bus_master_enable_region,
839 pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
840 pci_dev->irq_state = 0;
841 pci_config_alloc(pci_dev);
843 pci_config_set_vendor_id(pci_dev->config, pc->vendor_id);
844 pci_config_set_device_id(pci_dev->config, pc->device_id);
845 pci_config_set_revision(pci_dev->config, pc->revision);
846 pci_config_set_class(pci_dev->config, pc->class_id);
848 if (!pc->is_bridge) {
849 if (pc->subsystem_vendor_id || pc->subsystem_id) {
850 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID,
851 pc->subsystem_vendor_id);
852 pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID,
855 pci_set_default_subsystem_id(pci_dev);
858 /* subsystem_vendor_id/subsystem_id are only for header type 0 */
859 assert(!pc->subsystem_vendor_id);
860 assert(!pc->subsystem_id);
862 pci_init_cmask(pci_dev);
863 pci_init_wmask(pci_dev);
864 pci_init_w1cmask(pci_dev);
866 pci_init_mask_bridge(pci_dev);
868 if (pci_init_multifunction(bus, pci_dev)) {
869 do_pci_unregister_device(pci_dev);
874 config_read = pci_default_read_config;
876 config_write = pci_default_write_config;
877 pci_dev->config_read = config_read;
878 pci_dev->config_write = config_write;
879 bus->devices[devfn] = pci_dev;
880 pci_dev->version_id = 2; /* Current pci device vmstate version */
884 static void pci_unregister_io_regions(PCIDevice *pci_dev)
889 for(i = 0; i < PCI_NUM_REGIONS; i++) {
890 r = &pci_dev->io_regions[i];
891 if (!r->size || r->addr == PCI_BAR_UNMAPPED)
893 memory_region_del_subregion(r->address_space, r->memory);
896 pci_unregister_vga(pci_dev);
899 static int pci_unregister_device(DeviceState *dev)
901 PCIDevice *pci_dev = PCI_DEVICE(dev);
902 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
904 pci_unregister_io_regions(pci_dev);
905 pci_del_option_rom(pci_dev);
911 do_pci_unregister_device(pci_dev);
915 void pci_register_bar(PCIDevice *pci_dev, int region_num,
916 uint8_t type, MemoryRegion *memory)
921 pcibus_t size = memory_region_size(memory);
923 assert(region_num >= 0);
924 assert(region_num < PCI_NUM_REGIONS);
925 if (size & (size-1)) {
926 fprintf(stderr, "ERROR: PCI region size must be pow2 "
927 "type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size);
931 r = &pci_dev->io_regions[region_num];
932 r->addr = PCI_BAR_UNMAPPED;
938 addr = pci_bar(pci_dev, region_num);
939 if (region_num == PCI_ROM_SLOT) {
940 /* ROM enable bit is writable */
941 wmask |= PCI_ROM_ADDRESS_ENABLE;
943 pci_set_long(pci_dev->config + addr, type);
944 if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
945 r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
946 pci_set_quad(pci_dev->wmask + addr, wmask);
947 pci_set_quad(pci_dev->cmask + addr, ~0ULL);
949 pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
950 pci_set_long(pci_dev->cmask + addr, 0xffffffff);
952 pci_dev->io_regions[region_num].memory = memory;
953 pci_dev->io_regions[region_num].address_space
954 = type & PCI_BASE_ADDRESS_SPACE_IO
955 ? pci_dev->bus->address_space_io
956 : pci_dev->bus->address_space_mem;
959 static void pci_update_vga(PCIDevice *pci_dev)
963 if (!pci_dev->has_vga) {
967 cmd = pci_get_word(pci_dev->config + PCI_COMMAND);
969 memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_MEM],
970 cmd & PCI_COMMAND_MEMORY);
971 memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO],
972 cmd & PCI_COMMAND_IO);
973 memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI],
974 cmd & PCI_COMMAND_IO);
977 void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem,
978 MemoryRegion *io_lo, MemoryRegion *io_hi)
980 assert(!pci_dev->has_vga);
982 assert(memory_region_size(mem) == QEMU_PCI_VGA_MEM_SIZE);
983 pci_dev->vga_regions[QEMU_PCI_VGA_MEM] = mem;
984 memory_region_add_subregion_overlap(pci_dev->bus->address_space_mem,
985 QEMU_PCI_VGA_MEM_BASE, mem, 1);
987 assert(memory_region_size(io_lo) == QEMU_PCI_VGA_IO_LO_SIZE);
988 pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO] = io_lo;
989 memory_region_add_subregion_overlap(pci_dev->bus->address_space_io,
990 QEMU_PCI_VGA_IO_LO_BASE, io_lo, 1);
992 assert(memory_region_size(io_hi) == QEMU_PCI_VGA_IO_HI_SIZE);
993 pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI] = io_hi;
994 memory_region_add_subregion_overlap(pci_dev->bus->address_space_io,
995 QEMU_PCI_VGA_IO_HI_BASE, io_hi, 1);
996 pci_dev->has_vga = true;
998 pci_update_vga(pci_dev);
1001 void pci_unregister_vga(PCIDevice *pci_dev)
1003 if (!pci_dev->has_vga) {
1007 memory_region_del_subregion(pci_dev->bus->address_space_mem,
1008 pci_dev->vga_regions[QEMU_PCI_VGA_MEM]);
1009 memory_region_del_subregion(pci_dev->bus->address_space_io,
1010 pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO]);
1011 memory_region_del_subregion(pci_dev->bus->address_space_io,
1012 pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI]);
1013 pci_dev->has_vga = false;
1016 pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num)
1018 return pci_dev->io_regions[region_num].addr;
1021 static pcibus_t pci_bar_address(PCIDevice *d,
1022 int reg, uint8_t type, pcibus_t size)
1024 pcibus_t new_addr, last_addr;
1025 int bar = pci_bar(d, reg);
1026 uint16_t cmd = pci_get_word(d->config + PCI_COMMAND);
1028 if (type & PCI_BASE_ADDRESS_SPACE_IO) {
1029 if (!(cmd & PCI_COMMAND_IO)) {
1030 return PCI_BAR_UNMAPPED;
1032 new_addr = pci_get_long(d->config + bar) & ~(size - 1);
1033 last_addr = new_addr + size - 1;
1034 /* Check if 32 bit BAR wraps around explicitly.
1035 * TODO: make priorities correct and remove this work around.
1037 if (last_addr <= new_addr || new_addr == 0 || last_addr >= UINT32_MAX) {
1038 return PCI_BAR_UNMAPPED;
1043 if (!(cmd & PCI_COMMAND_MEMORY)) {
1044 return PCI_BAR_UNMAPPED;
1046 if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
1047 new_addr = pci_get_quad(d->config + bar);
1049 new_addr = pci_get_long(d->config + bar);
1051 /* the ROM slot has a specific enable bit */
1052 if (reg == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) {
1053 return PCI_BAR_UNMAPPED;
1055 new_addr &= ~(size - 1);
1056 last_addr = new_addr + size - 1;
1057 /* NOTE: we do not support wrapping */
1058 /* XXX: as we cannot support really dynamic
1059 mappings, we handle specific values as invalid
1061 if (last_addr <= new_addr || new_addr == 0 ||
1062 last_addr == PCI_BAR_UNMAPPED) {
1063 return PCI_BAR_UNMAPPED;
1066 /* Now pcibus_t is 64bit.
1067 * Check if 32 bit BAR wraps around explicitly.
1068 * Without this, PC ide doesn't work well.
1069 * TODO: remove this work around.
1071 if (!(type & PCI_BASE_ADDRESS_MEM_TYPE_64) && last_addr >= UINT32_MAX) {
1072 return PCI_BAR_UNMAPPED;
1076 * OS is allowed to set BAR beyond its addressable
1077 * bits. For example, 32 bit OS can set 64bit bar
1078 * to >4G. Check it. TODO: we might need to support
1079 * it in the future for e.g. PAE.
1081 if (last_addr >= HWADDR_MAX) {
1082 return PCI_BAR_UNMAPPED;
1088 static void pci_update_mappings(PCIDevice *d)
1094 for(i = 0; i < PCI_NUM_REGIONS; i++) {
1095 r = &d->io_regions[i];
1097 /* this region isn't registered */
1101 new_addr = pci_bar_address(d, i, r->type, r->size);
1103 /* This bar isn't changed */
1104 if (new_addr == r->addr)
1107 /* now do the real mapping */
1108 if (r->addr != PCI_BAR_UNMAPPED) {
1109 memory_region_del_subregion(r->address_space, r->memory);
1112 if (r->addr != PCI_BAR_UNMAPPED) {
1113 memory_region_add_subregion_overlap(r->address_space,
1114 r->addr, r->memory, 1);
1121 static inline int pci_irq_disabled(PCIDevice *d)
1123 return pci_get_word(d->config + PCI_COMMAND) & PCI_COMMAND_INTX_DISABLE;
1126 /* Called after interrupt disabled field update in config space,
1127 * assert/deassert interrupts if necessary.
1128 * Gets original interrupt disable bit value (before update). */
1129 static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled)
1131 int i, disabled = pci_irq_disabled(d);
1132 if (disabled == was_irq_disabled)
1134 for (i = 0; i < PCI_NUM_PINS; ++i) {
1135 int state = pci_irq_state(d, i);
1136 pci_change_irq_level(d, i, disabled ? -state : state);
1140 uint32_t pci_default_read_config(PCIDevice *d,
1141 uint32_t address, int len)
1145 memcpy(&val, d->config + address, len);
1146 return le32_to_cpu(val);
1149 void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l)
1151 int i, was_irq_disabled = pci_irq_disabled(d);
1153 for (i = 0; i < l; val >>= 8, ++i) {
1154 uint8_t wmask = d->wmask[addr + i];
1155 uint8_t w1cmask = d->w1cmask[addr + i];
1156 assert(!(wmask & w1cmask));
1157 d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask);
1158 d->config[addr + i] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */
1160 if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) ||
1161 ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) ||
1162 ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) ||
1163 range_covers_byte(addr, l, PCI_COMMAND))
1164 pci_update_mappings(d);
1166 if (range_covers_byte(addr, l, PCI_COMMAND)) {
1167 pci_update_irq_disabled(d, was_irq_disabled);
1168 memory_region_set_enabled(&d->bus_master_enable_region,
1169 pci_get_word(d->config + PCI_COMMAND)
1170 & PCI_COMMAND_MASTER);
1173 msi_write_config(d, addr, val, l);
1174 msix_write_config(d, addr, val, l);
1177 /***********************************************************/
1178 /* generic PCI irq support */
1180 /* 0 <= irq_num <= 3. level must be 0 or 1 */
1181 static void pci_irq_handler(void *opaque, int irq_num, int level)
1183 PCIDevice *pci_dev = opaque;
1186 change = level - pci_irq_state(pci_dev, irq_num);
1190 pci_set_irq_state(pci_dev, irq_num, level);
1191 pci_update_irq_status(pci_dev);
1192 if (pci_irq_disabled(pci_dev))
1194 pci_change_irq_level(pci_dev, irq_num, change);
1197 static inline int pci_intx(PCIDevice *pci_dev)
1199 return pci_get_byte(pci_dev->config + PCI_INTERRUPT_PIN) - 1;
1202 qemu_irq pci_allocate_irq(PCIDevice *pci_dev)
1204 int intx = pci_intx(pci_dev);
1206 return qemu_allocate_irq(pci_irq_handler, pci_dev, intx);
1209 void pci_set_irq(PCIDevice *pci_dev, int level)
1211 int intx = pci_intx(pci_dev);
1212 pci_irq_handler(pci_dev, intx, level);
1215 /* Special hooks used by device assignment */
1216 void pci_bus_set_route_irq_fn(PCIBus *bus, pci_route_irq_fn route_intx_to_irq)
1218 assert(pci_bus_is_root(bus));
1219 bus->route_intx_to_irq = route_intx_to_irq;
1222 PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin)
1228 pin = bus->map_irq(dev, pin);
1229 dev = bus->parent_dev;
1232 if (!bus->route_intx_to_irq) {
1233 error_report("PCI: Bug - unimplemented PCI INTx routing (%s)",
1234 object_get_typename(OBJECT(bus->qbus.parent)));
1235 return (PCIINTxRoute) { PCI_INTX_DISABLED, -1 };
1238 return bus->route_intx_to_irq(bus->irq_opaque, pin);
1241 bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new)
1243 return old->mode != new->mode || old->irq != new->irq;
1246 void pci_bus_fire_intx_routing_notifier(PCIBus *bus)
1252 for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
1253 dev = bus->devices[i];
1254 if (dev && dev->intx_routing_notifier) {
1255 dev->intx_routing_notifier(dev);
1259 QLIST_FOREACH(sec, &bus->child, sibling) {
1260 pci_bus_fire_intx_routing_notifier(sec);
1264 void pci_device_set_intx_routing_notifier(PCIDevice *dev,
1265 PCIINTxRoutingNotifier notifier)
1267 dev->intx_routing_notifier = notifier;
1271 * PCI-to-PCI bridge specification
1272 * 9.1: Interrupt routing. Table 9-1
1274 * the PCI Express Base Specification, Revision 2.1
1275 * 2.2.8.1: INTx interrutp signaling - Rules
1276 * the Implementation Note
1280 * 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD
1281 * 0-origin unlike PCI interrupt pin register.
1283 int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin)
1285 return (pin + PCI_SLOT(pci_dev->devfn)) % PCI_NUM_PINS;
1288 /***********************************************************/
1289 /* monitor info on PCI */
1294 const char *fw_name;
1295 uint16_t fw_ign_bits;
1298 static const pci_class_desc pci_class_descriptions[] =
1300 { 0x0001, "VGA controller", "display"},
1301 { 0x0100, "SCSI controller", "scsi"},
1302 { 0x0101, "IDE controller", "ide"},
1303 { 0x0102, "Floppy controller", "fdc"},
1304 { 0x0103, "IPI controller", "ipi"},
1305 { 0x0104, "RAID controller", "raid"},
1306 { 0x0106, "SATA controller"},
1307 { 0x0107, "SAS controller"},
1308 { 0x0180, "Storage controller"},
1309 { 0x0200, "Ethernet controller", "ethernet"},
1310 { 0x0201, "Token Ring controller", "token-ring"},
1311 { 0x0202, "FDDI controller", "fddi"},
1312 { 0x0203, "ATM controller", "atm"},
1313 { 0x0280, "Network controller"},
1314 { 0x0300, "VGA controller", "display", 0x00ff},
1315 { 0x0301, "XGA controller"},
1316 { 0x0302, "3D controller"},
1317 { 0x0380, "Display controller"},
1318 { 0x0400, "Video controller", "video"},
1319 { 0x0401, "Audio controller", "sound"},
1321 { 0x0403, "Audio controller", "sound"},
1322 { 0x0480, "Multimedia controller"},
1323 { 0x0500, "RAM controller", "memory"},
1324 { 0x0501, "Flash controller", "flash"},
1325 { 0x0580, "Memory controller"},
1326 { 0x0600, "Host bridge", "host"},
1327 { 0x0601, "ISA bridge", "isa"},
1328 { 0x0602, "EISA bridge", "eisa"},
1329 { 0x0603, "MC bridge", "mca"},
1330 { 0x0604, "PCI bridge", "pci-bridge"},
1331 { 0x0605, "PCMCIA bridge", "pcmcia"},
1332 { 0x0606, "NUBUS bridge", "nubus"},
1333 { 0x0607, "CARDBUS bridge", "cardbus"},
1334 { 0x0608, "RACEWAY bridge"},
1335 { 0x0680, "Bridge"},
1336 { 0x0700, "Serial port", "serial"},
1337 { 0x0701, "Parallel port", "parallel"},
1338 { 0x0800, "Interrupt controller", "interrupt-controller"},
1339 { 0x0801, "DMA controller", "dma-controller"},
1340 { 0x0802, "Timer", "timer"},
1341 { 0x0803, "RTC", "rtc"},
1342 { 0x0900, "Keyboard", "keyboard"},
1343 { 0x0901, "Pen", "pen"},
1344 { 0x0902, "Mouse", "mouse"},
1345 { 0x0A00, "Dock station", "dock", 0x00ff},
1346 { 0x0B00, "i386 cpu", "cpu", 0x00ff},
1347 { 0x0c00, "Fireware contorller", "fireware"},
1348 { 0x0c01, "Access bus controller", "access-bus"},
1349 { 0x0c02, "SSA controller", "ssa"},
1350 { 0x0c03, "USB controller", "usb"},
1351 { 0x0c04, "Fibre channel controller", "fibre-channel"},
1356 static void pci_for_each_device_under_bus(PCIBus *bus,
1357 void (*fn)(PCIBus *b, PCIDevice *d,
1364 for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
1365 d = bus->devices[devfn];
1372 void pci_for_each_device(PCIBus *bus, int bus_num,
1373 void (*fn)(PCIBus *b, PCIDevice *d, void *opaque),
1376 bus = pci_find_bus_nr(bus, bus_num);
1379 pci_for_each_device_under_bus(bus, fn, opaque);
1383 static const pci_class_desc *get_class_desc(int class)
1385 const pci_class_desc *desc;
1387 desc = pci_class_descriptions;
1388 while (desc->desc && class != desc->class) {
1395 static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num);
1397 static PciMemoryRegionList *qmp_query_pci_regions(const PCIDevice *dev)
1399 PciMemoryRegionList *head = NULL, *cur_item = NULL;
1402 for (i = 0; i < PCI_NUM_REGIONS; i++) {
1403 const PCIIORegion *r = &dev->io_regions[i];
1404 PciMemoryRegionList *region;
1410 region = g_malloc0(sizeof(*region));
1411 region->value = g_malloc0(sizeof(*region->value));
1413 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
1414 region->value->type = g_strdup("io");
1416 region->value->type = g_strdup("memory");
1417 region->value->has_prefetch = true;
1418 region->value->prefetch = !!(r->type & PCI_BASE_ADDRESS_MEM_PREFETCH);
1419 region->value->has_mem_type_64 = true;
1420 region->value->mem_type_64 = !!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64);
1423 region->value->bar = i;
1424 region->value->address = r->addr;
1425 region->value->size = r->size;
1427 /* XXX: waiting for the qapi to support GSList */
1429 head = cur_item = region;
1431 cur_item->next = region;
1439 static PciBridgeInfo *qmp_query_pci_bridge(PCIDevice *dev, PCIBus *bus,
1442 PciBridgeInfo *info;
1444 info = g_malloc0(sizeof(*info));
1446 info->bus.number = dev->config[PCI_PRIMARY_BUS];
1447 info->bus.secondary = dev->config[PCI_SECONDARY_BUS];
1448 info->bus.subordinate = dev->config[PCI_SUBORDINATE_BUS];
1450 info->bus.io_range = g_malloc0(sizeof(*info->bus.io_range));
1451 info->bus.io_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO);
1452 info->bus.io_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO);
1454 info->bus.memory_range = g_malloc0(sizeof(*info->bus.memory_range));
1455 info->bus.memory_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
1456 info->bus.memory_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
1458 info->bus.prefetchable_range = g_malloc0(sizeof(*info->bus.prefetchable_range));
1459 info->bus.prefetchable_range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
1460 info->bus.prefetchable_range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
1462 if (dev->config[PCI_SECONDARY_BUS] != 0) {
1463 PCIBus *child_bus = pci_find_bus_nr(bus, dev->config[PCI_SECONDARY_BUS]);
1465 info->has_devices = true;
1466 info->devices = qmp_query_pci_devices(child_bus, dev->config[PCI_SECONDARY_BUS]);
1473 static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus,
1476 const pci_class_desc *desc;
1477 PciDeviceInfo *info;
1481 info = g_malloc0(sizeof(*info));
1482 info->bus = bus_num;
1483 info->slot = PCI_SLOT(dev->devfn);
1484 info->function = PCI_FUNC(dev->devfn);
1486 class = pci_get_word(dev->config + PCI_CLASS_DEVICE);
1487 info->class_info.q_class = class;
1488 desc = get_class_desc(class);
1490 info->class_info.has_desc = true;
1491 info->class_info.desc = g_strdup(desc->desc);
1494 info->id.vendor = pci_get_word(dev->config + PCI_VENDOR_ID);
1495 info->id.device = pci_get_word(dev->config + PCI_DEVICE_ID);
1496 info->regions = qmp_query_pci_regions(dev);
1497 info->qdev_id = g_strdup(dev->qdev.id ? dev->qdev.id : "");
1499 if (dev->config[PCI_INTERRUPT_PIN] != 0) {
1500 info->has_irq = true;
1501 info->irq = dev->config[PCI_INTERRUPT_LINE];
1504 type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
1505 if (type == PCI_HEADER_TYPE_BRIDGE) {
1506 info->has_pci_bridge = true;
1507 info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num);
1513 static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num)
1515 PciDeviceInfoList *info, *head = NULL, *cur_item = NULL;
1519 for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
1520 dev = bus->devices[devfn];
1522 info = g_malloc0(sizeof(*info));
1523 info->value = qmp_query_pci_device(dev, bus, bus_num);
1525 /* XXX: waiting for the qapi to support GSList */
1527 head = cur_item = info;
1529 cur_item->next = info;
1538 static PciInfo *qmp_query_pci_bus(PCIBus *bus, int bus_num)
1540 PciInfo *info = NULL;
1542 bus = pci_find_bus_nr(bus, bus_num);
1544 info = g_malloc0(sizeof(*info));
1545 info->bus = bus_num;
1546 info->devices = qmp_query_pci_devices(bus, bus_num);
1552 PciInfoList *qmp_query_pci(Error **errp)
1554 PciInfoList *info, *head = NULL, *cur_item = NULL;
1555 PCIHostState *host_bridge;
1557 QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
1558 info = g_malloc0(sizeof(*info));
1559 info->value = qmp_query_pci_bus(host_bridge->bus, 0);
1561 /* XXX: waiting for the qapi to support GSList */
1563 head = cur_item = info;
1565 cur_item->next = info;
1573 static const char * const pci_nic_models[] = {
1585 static const char * const pci_nic_names[] = {
1597 /* Initialize a PCI NIC. */
1598 /* FIXME callers should check for failure, but don't */
1599 PCIDevice *pci_nic_init(NICInfo *nd, PCIBus *rootbus,
1600 const char *default_model,
1601 const char *default_devaddr)
1603 const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr;
1610 i = qemu_find_nic_model(nd, pci_nic_models, default_model);
1614 bus = pci_get_bus_devfn(&devfn, rootbus, devaddr);
1616 error_report("Invalid PCI device address %s for device %s",
1617 devaddr, pci_nic_names[i]);
1621 pci_dev = pci_create(bus, devfn, pci_nic_names[i]);
1622 dev = &pci_dev->qdev;
1623 qdev_set_nic_properties(dev, nd);
1624 if (qdev_init(dev) < 0)
1629 PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
1630 const char *default_model,
1631 const char *default_devaddr)
1635 if (qemu_show_nic_models(nd->model, pci_nic_models))
1638 res = pci_nic_init(nd, rootbus, default_model, default_devaddr);
1644 PCIDevice *pci_vga_init(PCIBus *bus)
1646 switch (vga_interface_type) {
1648 return pci_create_simple(bus, -1, "cirrus-vga");
1650 return pci_create_simple(bus, -1, "qxl-vga");
1652 return pci_create_simple(bus, -1, "VGA");
1654 return pci_create_simple(bus, -1, "vmware-svga");
1656 default: /* Other non-PCI types. Checking for unsupported types is already
1662 /* Whether a given bus number is in range of the secondary
1663 * bus of the given bridge device. */
1664 static bool pci_secondary_bus_in_range(PCIDevice *dev, int bus_num)
1666 return !(pci_get_word(dev->config + PCI_BRIDGE_CONTROL) &
1667 PCI_BRIDGE_CTL_BUS_RESET) /* Don't walk the bus if it's reset. */ &&
1668 dev->config[PCI_SECONDARY_BUS] < bus_num &&
1669 bus_num <= dev->config[PCI_SUBORDINATE_BUS];
1672 static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num)
1680 if (pci_bus_num(bus) == bus_num) {
1684 /* Consider all bus numbers in range for the host pci bridge. */
1685 if (!pci_bus_is_root(bus) &&
1686 !pci_secondary_bus_in_range(bus->parent_dev, bus_num)) {
1691 for (; bus; bus = sec) {
1692 QLIST_FOREACH(sec, &bus->child, sibling) {
1693 assert(!pci_bus_is_root(sec));
1694 if (sec->parent_dev->config[PCI_SECONDARY_BUS] == bus_num) {
1697 if (pci_secondary_bus_in_range(sec->parent_dev, bus_num)) {
1706 void pci_for_each_bus_depth_first(PCIBus *bus,
1707 void *(*begin)(PCIBus *bus, void *parent_state),
1708 void (*end)(PCIBus *bus, void *state),
1719 state = begin(bus, parent_state);
1721 state = parent_state;
1724 QLIST_FOREACH(sec, &bus->child, sibling) {
1725 pci_for_each_bus_depth_first(sec, begin, end, state);
1734 PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn)
1736 bus = pci_find_bus_nr(bus, bus_num);
1741 return bus->devices[devfn];
1744 static int pci_qdev_init(DeviceState *qdev)
1746 PCIDevice *pci_dev = (PCIDevice *)qdev;
1747 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
1750 bool is_default_rom;
1752 /* initialize cap_present for pci_is_express() and pci_config_size() */
1753 if (pc->is_express) {
1754 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
1757 bus = PCI_BUS(qdev_get_parent_bus(qdev));
1758 pci_dev = do_pci_register_device(pci_dev, bus,
1759 object_get_typename(OBJECT(qdev)),
1761 if (pci_dev == NULL)
1765 rc = pc->init(pci_dev);
1767 do_pci_unregister_device(pci_dev);
1773 is_default_rom = false;
1774 if (pci_dev->romfile == NULL && pc->romfile != NULL) {
1775 pci_dev->romfile = g_strdup(pc->romfile);
1776 is_default_rom = true;
1778 pci_add_option_rom(pci_dev, is_default_rom);
1783 PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
1788 dev = qdev_create(&bus->qbus, name);
1789 qdev_prop_set_int32(dev, "addr", devfn);
1790 qdev_prop_set_bit(dev, "multifunction", multifunction);
1791 return PCI_DEVICE(dev);
1794 PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
1798 PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name);
1799 qdev_init_nofail(&dev->qdev);
1803 PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name)
1805 return pci_create_multifunction(bus, devfn, false, name);
1808 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name)
1810 return pci_create_simple_multifunction(bus, devfn, false, name);
1813 static uint8_t pci_find_space(PCIDevice *pdev, uint8_t size)
1815 int offset = PCI_CONFIG_HEADER_SIZE;
1817 for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i) {
1820 else if (i - offset + 1 == size)
1826 static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
1831 if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
1834 for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
1835 prev = next + PCI_CAP_LIST_NEXT)
1836 if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
1844 static uint8_t pci_find_capability_at_offset(PCIDevice *pdev, uint8_t offset)
1846 uint8_t next, prev, found = 0;
1848 if (!(pdev->used[offset])) {
1852 assert(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST);
1854 for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
1855 prev = next + PCI_CAP_LIST_NEXT) {
1856 if (next <= offset && next > found) {
1863 /* Patch the PCI vendor and device ids in a PCI rom image if necessary.
1864 This is needed for an option rom which is used for more than one device. */
1865 static void pci_patch_ids(PCIDevice *pdev, uint8_t *ptr, int size)
1869 uint16_t rom_vendor_id;
1870 uint16_t rom_device_id;
1872 uint16_t pcir_offset;
1875 /* Words in rom data are little endian (like in PCI configuration),
1876 so they can be read / written with pci_get_word / pci_set_word. */
1878 /* Only a valid rom will be patched. */
1879 rom_magic = pci_get_word(ptr);
1880 if (rom_magic != 0xaa55) {
1881 PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic);
1884 pcir_offset = pci_get_word(ptr + 0x18);
1885 if (pcir_offset + 8 >= size || memcmp(ptr + pcir_offset, "PCIR", 4)) {
1886 PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset);
1890 vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID);
1891 device_id = pci_get_word(pdev->config + PCI_DEVICE_ID);
1892 rom_vendor_id = pci_get_word(ptr + pcir_offset + 4);
1893 rom_device_id = pci_get_word(ptr + pcir_offset + 6);
1895 PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev->romfile,
1896 vendor_id, device_id, rom_vendor_id, rom_device_id);
1900 if (vendor_id != rom_vendor_id) {
1901 /* Patch vendor id and checksum (at offset 6 for etherboot roms). */
1902 checksum += (uint8_t)rom_vendor_id + (uint8_t)(rom_vendor_id >> 8);
1903 checksum -= (uint8_t)vendor_id + (uint8_t)(vendor_id >> 8);
1904 PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum);
1906 pci_set_word(ptr + pcir_offset + 4, vendor_id);
1909 if (device_id != rom_device_id) {
1910 /* Patch device id and checksum (at offset 6 for etherboot roms). */
1911 checksum += (uint8_t)rom_device_id + (uint8_t)(rom_device_id >> 8);
1912 checksum -= (uint8_t)device_id + (uint8_t)(device_id >> 8);
1913 PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum);
1915 pci_set_word(ptr + pcir_offset + 6, device_id);
1919 /* Add an option rom for the device */
1920 static int pci_add_option_rom(PCIDevice *pdev, bool is_default_rom)
1926 const VMStateDescription *vmsd;
1930 if (strlen(pdev->romfile) == 0)
1933 if (!pdev->rom_bar) {
1935 * Load rom via fw_cfg instead of creating a rom bar,
1936 * for 0.11 compatibility.
1938 int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
1939 if (class == 0x0300) {
1940 rom_add_vga(pdev->romfile);
1942 rom_add_option(pdev->romfile, -1);
1947 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile);
1949 path = g_strdup(pdev->romfile);
1952 size = get_image_size(path);
1954 error_report("%s: failed to find romfile \"%s\"",
1955 __func__, pdev->romfile);
1958 } else if (size == 0) {
1959 error_report("%s: ignoring empty romfile \"%s\"",
1960 __func__, pdev->romfile);
1964 if (size & (size - 1)) {
1965 size = 1 << qemu_fls(size);
1968 vmsd = qdev_get_vmsd(DEVICE(pdev));
1971 snprintf(name, sizeof(name), "%s.rom", vmsd->name);
1973 snprintf(name, sizeof(name), "%s.rom", object_get_typename(OBJECT(pdev)));
1975 pdev->has_rom = true;
1976 memory_region_init_ram(&pdev->rom, OBJECT(pdev), name, size);
1977 vmstate_register_ram(&pdev->rom, &pdev->qdev);
1978 ptr = memory_region_get_ram_ptr(&pdev->rom);
1979 load_image(path, ptr);
1982 if (is_default_rom) {
1983 /* Only the default rom images will be patched (if needed). */
1984 pci_patch_ids(pdev, ptr, size);
1987 pci_register_bar(pdev, PCI_ROM_SLOT, 0, &pdev->rom);
1992 static void pci_del_option_rom(PCIDevice *pdev)
1997 vmstate_unregister_ram(&pdev->rom, &pdev->qdev);
1998 pdev->has_rom = false;
2003 * Reserve space and add capability to the linked list in pci config space
2006 * Find and reserve space and add capability to the linked list
2007 * in pci config space */
2008 int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
2009 uint8_t offset, uint8_t size)
2012 Error *local_err = NULL;
2014 ret = pci_add_capability2(pdev, cap_id, offset, size, &local_err);
2017 error_report("%s", error_get_pretty(local_err));
2018 error_free(local_err);
2020 /* success implies a positive offset in config space */
2026 int pci_add_capability2(PCIDevice *pdev, uint8_t cap_id,
2027 uint8_t offset, uint8_t size,
2031 int i, overlapping_cap;
2034 offset = pci_find_space(pdev, size);
2036 error_setg(errp, "out of PCI config space");
2040 /* Verify that capabilities don't overlap. Note: device assignment
2041 * depends on this check to verify that the device is not broken.
2042 * Should never trigger for emulated devices, but it's helpful
2043 * for debugging these. */
2044 for (i = offset; i < offset + size; i++) {
2045 overlapping_cap = pci_find_capability_at_offset(pdev, i);
2046 if (overlapping_cap) {
2047 error_setg(errp, "%s:%02x:%02x.%x "
2048 "Attempt to add PCI capability %x at offset "
2049 "%x overlaps existing capability %x at offset %x",
2050 pci_root_bus_path(pdev), pci_bus_num(pdev->bus),
2051 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
2052 cap_id, offset, overlapping_cap, i);
2058 config = pdev->config + offset;
2059 config[PCI_CAP_LIST_ID] = cap_id;
2060 config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST];
2061 pdev->config[PCI_CAPABILITY_LIST] = offset;
2062 pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST;
2063 memset(pdev->used + offset, 0xFF, QEMU_ALIGN_UP(size, 4));
2064 /* Make capability read-only by default */
2065 memset(pdev->wmask + offset, 0, size);
2066 /* Check capability by default */
2067 memset(pdev->cmask + offset, 0xFF, size);
2071 /* Unlink capability from the pci config space. */
2072 void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
2074 uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev);
2077 pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT];
2078 /* Make capability writable again */
2079 memset(pdev->wmask + offset, 0xff, size);
2080 memset(pdev->w1cmask + offset, 0, size);
2081 /* Clear cmask as device-specific registers can't be checked */
2082 memset(pdev->cmask + offset, 0, size);
2083 memset(pdev->used + offset, 0, QEMU_ALIGN_UP(size, 4));
2085 if (!pdev->config[PCI_CAPABILITY_LIST])
2086 pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST;
2089 uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id)
2091 return pci_find_capability_list(pdev, cap_id, NULL);
2094 static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
2096 PCIDevice *d = (PCIDevice *)dev;
2097 const pci_class_desc *desc;
2102 class = pci_get_word(d->config + PCI_CLASS_DEVICE);
2103 desc = pci_class_descriptions;
2104 while (desc->desc && class != desc->class)
2107 snprintf(ctxt, sizeof(ctxt), "%s", desc->desc);
2109 snprintf(ctxt, sizeof(ctxt), "Class %04x", class);
2112 monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
2113 "pci id %04x:%04x (sub %04x:%04x)\n",
2114 indent, "", ctxt, pci_bus_num(d->bus),
2115 PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
2116 pci_get_word(d->config + PCI_VENDOR_ID),
2117 pci_get_word(d->config + PCI_DEVICE_ID),
2118 pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID),
2119 pci_get_word(d->config + PCI_SUBSYSTEM_ID));
2120 for (i = 0; i < PCI_NUM_REGIONS; i++) {
2121 r = &d->io_regions[i];
2124 monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS
2125 " [0x%"FMT_PCIBUS"]\n",
2127 i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem",
2128 r->addr, r->addr + r->size - 1);
2132 static char *pci_dev_fw_name(DeviceState *dev, char *buf, int len)
2134 PCIDevice *d = (PCIDevice *)dev;
2135 const char *name = NULL;
2136 const pci_class_desc *desc = pci_class_descriptions;
2137 int class = pci_get_word(d->config + PCI_CLASS_DEVICE);
2139 while (desc->desc &&
2140 (class & ~desc->fw_ign_bits) !=
2141 (desc->class & ~desc->fw_ign_bits)) {
2146 name = desc->fw_name;
2150 pstrcpy(buf, len, name);
2152 snprintf(buf, len, "pci%04x,%04x",
2153 pci_get_word(d->config + PCI_VENDOR_ID),
2154 pci_get_word(d->config + PCI_DEVICE_ID));
2160 static char *pcibus_get_fw_dev_path(DeviceState *dev)
2162 PCIDevice *d = (PCIDevice *)dev;
2163 char path[50], name[33];
2166 off = snprintf(path, sizeof(path), "%s@%x",
2167 pci_dev_fw_name(dev, name, sizeof name),
2168 PCI_SLOT(d->devfn));
2169 if (PCI_FUNC(d->devfn))
2170 snprintf(path + off, sizeof(path) + off, ",%x", PCI_FUNC(d->devfn));
2171 return g_strdup(path);
2174 static char *pcibus_get_dev_path(DeviceState *dev)
2176 PCIDevice *d = container_of(dev, PCIDevice, qdev);
2179 /* Path format: Domain:00:Slot.Function:Slot.Function....:Slot.Function.
2180 * 00 is added here to make this format compatible with
2181 * domain:Bus:Slot.Func for systems without nested PCI bridges.
2182 * Slot.Function list specifies the slot and function numbers for all
2183 * devices on the path from root to the specific device. */
2184 const char *root_bus_path;
2186 char slot[] = ":SS.F";
2187 int slot_len = sizeof slot - 1 /* For '\0' */;
2192 root_bus_path = pci_root_bus_path(d);
2193 root_bus_len = strlen(root_bus_path);
2195 /* Calculate # of slots on path between device and root. */;
2197 for (t = d; t; t = t->bus->parent_dev) {
2201 path_len = root_bus_len + slot_len * slot_depth;
2203 /* Allocate memory, fill in the terminating null byte. */
2204 path = g_malloc(path_len + 1 /* For '\0' */);
2205 path[path_len] = '\0';
2207 memcpy(path, root_bus_path, root_bus_len);
2209 /* Fill in slot numbers. We walk up from device to root, so need to print
2210 * them in the reverse order, last to first. */
2211 p = path + path_len;
2212 for (t = d; t; t = t->bus->parent_dev) {
2214 s = snprintf(slot, sizeof slot, ":%02x.%x",
2215 PCI_SLOT(t->devfn), PCI_FUNC(t->devfn));
2216 assert(s == slot_len);
2217 memcpy(p, slot, slot_len);
2223 static int pci_qdev_find_recursive(PCIBus *bus,
2224 const char *id, PCIDevice **pdev)
2226 DeviceState *qdev = qdev_find_recursive(&bus->qbus, id);
2231 /* roughly check if given qdev is pci device */
2232 if (object_dynamic_cast(OBJECT(qdev), TYPE_PCI_DEVICE)) {
2233 *pdev = PCI_DEVICE(qdev);
2239 int pci_qdev_find_device(const char *id, PCIDevice **pdev)
2241 PCIHostState *host_bridge;
2244 QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
2245 int tmp = pci_qdev_find_recursive(host_bridge->bus, id, pdev);
2250 if (tmp != -ENODEV) {
2258 MemoryRegion *pci_address_space(PCIDevice *dev)
2260 return dev->bus->address_space_mem;
2263 MemoryRegion *pci_address_space_io(PCIDevice *dev)
2265 return dev->bus->address_space_io;
2268 static void pci_device_class_init(ObjectClass *klass, void *data)
2270 DeviceClass *k = DEVICE_CLASS(klass);
2271 k->init = pci_qdev_init;
2272 k->exit = pci_unregister_device;
2273 k->bus_type = TYPE_PCI_BUS;
2274 k->props = pci_props;
2277 AddressSpace *pci_device_iommu_address_space(PCIDevice *dev)
2279 PCIBus *bus = PCI_BUS(dev->bus);
2281 if (bus->iommu_fn) {
2282 return bus->iommu_fn(bus, bus->iommu_opaque, dev->devfn);
2285 if (bus->parent_dev) {
2286 /** We are ignoring the bus master DMA bit of the bridge
2287 * as it would complicate things such as VFIO for no good reason */
2288 return pci_device_iommu_address_space(bus->parent_dev);
2291 return &address_space_memory;
2294 void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque)
2297 bus->iommu_opaque = opaque;
2300 static void pci_dev_get_w64(PCIBus *b, PCIDevice *dev, void *opaque)
2302 Range *range = opaque;
2303 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
2304 uint16_t cmd = pci_get_word(dev->config + PCI_COMMAND);
2307 if (!(cmd & PCI_COMMAND_MEMORY)) {
2311 if (pc->is_bridge) {
2312 pcibus_t base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
2313 pcibus_t limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
2315 base = MAX(base, 0x1ULL << 32);
2317 if (limit >= base) {
2319 pref_range.begin = base;
2320 pref_range.end = limit + 1;
2321 range_extend(range, &pref_range);
2324 for (i = 0; i < PCI_NUM_REGIONS; ++i) {
2325 PCIIORegion *r = &dev->io_regions[i];
2329 (r->type & PCI_BASE_ADDRESS_SPACE_IO) ||
2330 !(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64)) {
2333 region_range.begin = pci_bar_address(dev, i, r->type, r->size);
2334 region_range.end = region_range.begin + r->size;
2336 if (region_range.begin == PCI_BAR_UNMAPPED) {
2340 region_range.begin = MAX(region_range.begin, 0x1ULL << 32);
2342 if (region_range.end - 1 >= region_range.begin) {
2343 range_extend(range, ®ion_range);
2348 void pci_bus_get_w64_range(PCIBus *bus, Range *range)
2350 range->begin = range->end = 0;
2351 pci_for_each_device_under_bus(bus, pci_dev_get_w64, range);
2354 static const TypeInfo pci_device_type_info = {
2355 .name = TYPE_PCI_DEVICE,
2356 .parent = TYPE_DEVICE,
2357 .instance_size = sizeof(PCIDevice),
2359 .class_size = sizeof(PCIDeviceClass),
2360 .class_init = pci_device_class_init,
2363 static void pci_register_types(void)
2365 type_register_static(&pci_bus_info);
2366 type_register_static(&pcie_bus_info);
2367 type_register_static(&pci_device_type_info);
2370 type_init(pci_register_types)