4
* Copyright (c) 2004 Fabrice Bellard
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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#include "qemu/osdep.h"
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#include "hw/pci/pci.h"
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#include "hw/pci/pci_bridge.h"
28
#include "hw/pci/pci_bus.h"
29
#include "hw/pci/pci_host.h"
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#include "monitor/monitor.h"
32
#include "sysemu/sysemu.h"
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#include "hw/loader.h"
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#include "qemu/error-report.h"
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#include "qemu/range.h"
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#include "qmp-commands.h"
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#include "hw/pci/msi.h"
39
#include "hw/pci/msix.h"
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#include "exec/address-spaces.h"
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#include "hw/hotplug.h"
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#include "hw/boards.h"
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#include "qemu/cutils.h"
47
# define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
49
# define PCI_DPRINTF(format, ...) do { } while (0)
52
static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent);
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static char *pcibus_get_dev_path(DeviceState *dev);
54
static char *pcibus_get_fw_dev_path(DeviceState *dev);
55
static void pcibus_reset(BusState *qbus);
57
static Property pci_props[] = {
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DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1),
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DEFINE_PROP_STRING("romfile", PCIDevice, romfile),
60
DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1),
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DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present,
62
QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false),
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DEFINE_PROP_BIT("command_serr_enable", PCIDevice, cap_present,
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QEMU_PCI_CAP_SERR_BITNR, true),
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DEFINE_PROP_BIT("x-pcie-lnksta-dllla", PCIDevice, cap_present,
66
QEMU_PCIE_LNKSTA_DLLLA_BITNR, true),
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DEFINE_PROP_END_OF_LIST()
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static const VMStateDescription vmstate_pcibus = {
73
.minimum_version_id = 1,
74
.fields = (VMStateField[]) {
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VMSTATE_INT32_EQUAL(nirq, PCIBus),
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VMSTATE_VARRAY_INT32(irq_count, PCIBus,
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nirq, 0, vmstate_info_int32,
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static void pci_init_bus_master(PCIDevice *pci_dev)
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AddressSpace *dma_as = pci_device_iommu_address_space(pci_dev);
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memory_region_init_alias(&pci_dev->bus_master_enable_region,
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OBJECT(pci_dev), "bus master",
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dma_as->root, 0, memory_region_size(dma_as->root));
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memory_region_set_enabled(&pci_dev->bus_master_enable_region, false);
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address_space_init(&pci_dev->bus_master_as,
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&pci_dev->bus_master_enable_region, pci_dev->name);
95
static void pcibus_machine_done(Notifier *notifier, void *data)
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PCIBus *bus = container_of(notifier, PCIBus, machine_done);
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for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
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if (bus->devices[i]) {
102
pci_init_bus_master(bus->devices[i]);
107
static void pci_bus_realize(BusState *qbus, Error **errp)
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PCIBus *bus = PCI_BUS(qbus);
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bus->machine_done.notify = pcibus_machine_done;
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qemu_add_machine_init_done_notifier(&bus->machine_done);
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vmstate_register(NULL, -1, &vmstate_pcibus, bus);
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static void pci_bus_unrealize(BusState *qbus, Error **errp)
119
PCIBus *bus = PCI_BUS(qbus);
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qemu_remove_machine_init_done_notifier(&bus->machine_done);
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vmstate_unregister(NULL, &vmstate_pcibus, bus);
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static bool pcibus_is_root(PCIBus *bus)
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return !bus->parent_dev;
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static int pcibus_num(PCIBus *bus)
133
if (pcibus_is_root(bus)) {
134
return 0; /* pci host bridge */
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return bus->parent_dev->config[PCI_SECONDARY_BUS];
139
static uint16_t pcibus_numa_node(PCIBus *bus)
141
return NUMA_NODE_UNASSIGNED;
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static void pci_bus_class_init(ObjectClass *klass, void *data)
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BusClass *k = BUS_CLASS(klass);
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PCIBusClass *pbc = PCI_BUS_CLASS(klass);
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k->print_dev = pcibus_dev_print;
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k->get_dev_path = pcibus_get_dev_path;
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k->get_fw_dev_path = pcibus_get_fw_dev_path;
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k->realize = pci_bus_realize;
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k->unrealize = pci_bus_unrealize;
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k->reset = pcibus_reset;
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pbc->is_root = pcibus_is_root;
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pbc->bus_num = pcibus_num;
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pbc->numa_node = pcibus_numa_node;
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static const TypeInfo pci_bus_info = {
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.name = TYPE_PCI_BUS,
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.instance_size = sizeof(PCIBus),
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.class_size = sizeof(PCIBusClass),
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.class_init = pci_bus_class_init,
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static const TypeInfo pcie_bus_info = {
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.name = TYPE_PCIE_BUS,
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.parent = TYPE_PCI_BUS,
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static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num);
175
static void pci_update_mappings(PCIDevice *d);
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static void pci_irq_handler(void *opaque, int irq_num, int level);
177
static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom, Error **);
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static void pci_del_option_rom(PCIDevice *pdev);
180
static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
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static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
183
static QLIST_HEAD(, PCIHostState) pci_host_bridges;
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int pci_bar(PCIDevice *d, int reg)
189
if (reg != PCI_ROM_SLOT)
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return PCI_BASE_ADDRESS_0 + reg * 4;
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type = d->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
193
return type == PCI_HEADER_TYPE_BRIDGE ? PCI_ROM_ADDRESS1 : PCI_ROM_ADDRESS;
196
static inline int pci_irq_state(PCIDevice *d, int irq_num)
198
return (d->irq_state >> irq_num) & 0x1;
201
static inline void pci_set_irq_state(PCIDevice *d, int irq_num, int level)
203
d->irq_state &= ~(0x1 << irq_num);
204
d->irq_state |= level << irq_num;
207
static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change)
212
irq_num = bus->map_irq(pci_dev, irq_num);
215
pci_dev = bus->parent_dev;
217
bus->irq_count[irq_num] += change;
218
bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
221
int pci_bus_get_irq_level(PCIBus *bus, int irq_num)
223
assert(irq_num >= 0);
224
assert(irq_num < bus->nirq);
225
return !!bus->irq_count[irq_num];
228
/* Update interrupt status bit in config space on interrupt
230
static void pci_update_irq_status(PCIDevice *dev)
232
if (dev->irq_state) {
233
dev->config[PCI_STATUS] |= PCI_STATUS_INTERRUPT;
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dev->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT;
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void pci_device_deassert_intx(PCIDevice *dev)
242
for (i = 0; i < PCI_NUM_PINS; ++i) {
243
pci_irq_handler(dev, i, 0);
247
static void pci_do_device_reset(PCIDevice *dev)
251
pci_device_deassert_intx(dev);
252
assert(dev->irq_state == 0);
254
/* Clear all writable bits */
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pci_word_test_and_clear_mask(dev->config + PCI_COMMAND,
256
pci_get_word(dev->wmask + PCI_COMMAND) |
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pci_get_word(dev->w1cmask + PCI_COMMAND));
258
pci_word_test_and_clear_mask(dev->config + PCI_STATUS,
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pci_get_word(dev->wmask + PCI_STATUS) |
260
pci_get_word(dev->w1cmask + PCI_STATUS));
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dev->config[PCI_CACHE_LINE_SIZE] = 0x0;
262
dev->config[PCI_INTERRUPT_LINE] = 0x0;
263
for (r = 0; r < PCI_NUM_REGIONS; ++r) {
264
PCIIORegion *region = &dev->io_regions[r];
269
if (!(region->type & PCI_BASE_ADDRESS_SPACE_IO) &&
270
region->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
271
pci_set_quad(dev->config + pci_bar(dev, r), region->type);
273
pci_set_long(dev->config + pci_bar(dev, r), region->type);
276
pci_update_mappings(dev);
283
* This function is called on #RST and FLR.
284
* FLR if PCI_EXP_DEVCTL_BCR_FLR is set
286
void pci_device_reset(PCIDevice *dev)
288
qdev_reset_all(&dev->qdev);
289
pci_do_device_reset(dev);
293
* Trigger pci bus reset under a given bus.
294
* Called via qbus_reset_all on RST# assert, after the devices
295
* have been reset qdev_reset_all-ed already.
297
static void pcibus_reset(BusState *qbus)
299
PCIBus *bus = DO_UPCAST(PCIBus, qbus, qbus);
302
for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
303
if (bus->devices[i]) {
304
pci_do_device_reset(bus->devices[i]);
308
for (i = 0; i < bus->nirq; i++) {
309
assert(bus->irq_count[i] == 0);
313
static void pci_host_bus_register(DeviceState *host)
315
PCIHostState *host_bridge = PCI_HOST_BRIDGE(host);
317
QLIST_INSERT_HEAD(&pci_host_bridges, host_bridge, next);
320
PCIBus *pci_find_primary_bus(void)
322
PCIBus *primary_bus = NULL;
325
QLIST_FOREACH(host, &pci_host_bridges, next) {
327
/* We have multiple root buses, refuse to select a primary */
330
primary_bus = host->bus;
336
PCIBus *pci_device_root_bus(const PCIDevice *d)
338
PCIBus *bus = d->bus;
340
while (!pci_bus_is_root(bus)) {
350
const char *pci_root_bus_path(PCIDevice *dev)
352
PCIBus *rootbus = pci_device_root_bus(dev);
353
PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent);
354
PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge);
356
assert(host_bridge->bus == rootbus);
358
if (hc->root_bus_path) {
359
return (*hc->root_bus_path)(host_bridge, rootbus);
362
return rootbus->qbus.name;
365
static void pci_bus_init(PCIBus *bus, DeviceState *parent,
366
MemoryRegion *address_space_mem,
367
MemoryRegion *address_space_io,
370
assert(PCI_FUNC(devfn_min) == 0);
371
bus->devfn_min = devfn_min;
372
bus->address_space_mem = address_space_mem;
373
bus->address_space_io = address_space_io;
376
QLIST_INIT(&bus->child);
378
pci_host_bus_register(parent);
381
bool pci_bus_is_express(PCIBus *bus)
383
return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS);
386
bool pci_bus_is_root(PCIBus *bus)
388
return PCI_BUS_GET_CLASS(bus)->is_root(bus);
391
void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent,
393
MemoryRegion *address_space_mem,
394
MemoryRegion *address_space_io,
395
uint8_t devfn_min, const char *typename)
397
qbus_create_inplace(bus, bus_size, typename, parent, name);
398
pci_bus_init(bus, parent, address_space_mem, address_space_io, devfn_min);
401
PCIBus *pci_bus_new(DeviceState *parent, const char *name,
402
MemoryRegion *address_space_mem,
403
MemoryRegion *address_space_io,
404
uint8_t devfn_min, const char *typename)
408
bus = PCI_BUS(qbus_create(typename, parent, name));
409
pci_bus_init(bus, parent, address_space_mem, address_space_io, devfn_min);
413
void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
414
void *irq_opaque, int nirq)
416
bus->set_irq = set_irq;
417
bus->map_irq = map_irq;
418
bus->irq_opaque = irq_opaque;
420
bus->irq_count = g_malloc0(nirq * sizeof(bus->irq_count[0]));
423
PCIBus *pci_register_bus(DeviceState *parent, const char *name,
424
pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
426
MemoryRegion *address_space_mem,
427
MemoryRegion *address_space_io,
428
uint8_t devfn_min, int nirq, const char *typename)
432
bus = pci_bus_new(parent, name, address_space_mem,
433
address_space_io, devfn_min, typename);
434
pci_bus_irqs(bus, set_irq, map_irq, irq_opaque, nirq);
438
int pci_bus_num(PCIBus *s)
440
return PCI_BUS_GET_CLASS(s)->bus_num(s);
443
int pci_bus_numa_node(PCIBus *bus)
445
return PCI_BUS_GET_CLASS(bus)->numa_node(bus);
448
static int get_pci_config_device(QEMUFile *f, void *pv, size_t size)
450
PCIDevice *s = container_of(pv, PCIDevice, config);
451
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(s);
455
assert(size == pci_config_size(s));
456
config = g_malloc(size);
458
qemu_get_buffer(f, config, size);
459
for (i = 0; i < size; ++i) {
460
if ((config[i] ^ s->config[i]) &
461
s->cmask[i] & ~s->wmask[i] & ~s->w1cmask[i]) {
462
error_report("%s: Bad config data: i=0x%x read: %x device: %x "
463
"cmask: %x wmask: %x w1cmask:%x", __func__,
464
i, config[i], s->config[i],
465
s->cmask[i], s->wmask[i], s->w1cmask[i]);
470
memcpy(s->config, config, size);
472
pci_update_mappings(s);
474
PCIBridge *b = PCI_BRIDGE(s);
475
pci_bridge_update_mappings(b);
478
memory_region_set_enabled(&s->bus_master_enable_region,
479
pci_get_word(s->config + PCI_COMMAND)
480
& PCI_COMMAND_MASTER);
486
/* just put buffer */
487
static void put_pci_config_device(QEMUFile *f, void *pv, size_t size)
489
const uint8_t **v = pv;
490
assert(size == pci_config_size(container_of(pv, PCIDevice, config)));
491
qemu_put_buffer(f, *v, size);
494
static VMStateInfo vmstate_info_pci_config = {
495
.name = "pci config",
496
.get = get_pci_config_device,
497
.put = put_pci_config_device,
500
static int get_pci_irq_state(QEMUFile *f, void *pv, size_t size)
502
PCIDevice *s = container_of(pv, PCIDevice, irq_state);
503
uint32_t irq_state[PCI_NUM_PINS];
505
for (i = 0; i < PCI_NUM_PINS; ++i) {
506
irq_state[i] = qemu_get_be32(f);
507
if (irq_state[i] != 0x1 && irq_state[i] != 0) {
508
fprintf(stderr, "irq state %d: must be 0 or 1.\n",
514
for (i = 0; i < PCI_NUM_PINS; ++i) {
515
pci_set_irq_state(s, i, irq_state[i]);
521
static void put_pci_irq_state(QEMUFile *f, void *pv, size_t size)
524
PCIDevice *s = container_of(pv, PCIDevice, irq_state);
526
for (i = 0; i < PCI_NUM_PINS; ++i) {
527
qemu_put_be32(f, pci_irq_state(s, i));
531
static VMStateInfo vmstate_info_pci_irq_state = {
532
.name = "pci irq state",
533
.get = get_pci_irq_state,
534
.put = put_pci_irq_state,
537
const VMStateDescription vmstate_pci_device = {
540
.minimum_version_id = 1,
541
.fields = (VMStateField[]) {
542
VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice),
543
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
544
vmstate_info_pci_config,
545
PCI_CONFIG_SPACE_SIZE),
546
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
547
vmstate_info_pci_irq_state,
548
PCI_NUM_PINS * sizeof(int32_t)),
549
VMSTATE_END_OF_LIST()
553
const VMStateDescription vmstate_pcie_device = {
554
.name = "PCIEDevice",
556
.minimum_version_id = 1,
557
.fields = (VMStateField[]) {
558
VMSTATE_INT32_POSITIVE_LE(version_id, PCIDevice),
559
VMSTATE_BUFFER_UNSAFE_INFO(config, PCIDevice, 0,
560
vmstate_info_pci_config,
561
PCIE_CONFIG_SPACE_SIZE),
562
VMSTATE_BUFFER_UNSAFE_INFO(irq_state, PCIDevice, 2,
563
vmstate_info_pci_irq_state,
564
PCI_NUM_PINS * sizeof(int32_t)),
565
VMSTATE_END_OF_LIST()
569
static inline const VMStateDescription *pci_get_vmstate(PCIDevice *s)
571
return pci_is_express(s) ? &vmstate_pcie_device : &vmstate_pci_device;
574
void pci_device_save(PCIDevice *s, QEMUFile *f)
576
/* Clear interrupt status bit: it is implicit
577
* in irq_state which we are saving.
578
* This makes us compatible with old devices
579
* which never set or clear this bit. */
580
s->config[PCI_STATUS] &= ~PCI_STATUS_INTERRUPT;
581
vmstate_save_state(f, pci_get_vmstate(s), s, NULL);
582
/* Restore the interrupt status bit. */
583
pci_update_irq_status(s);
586
int pci_device_load(PCIDevice *s, QEMUFile *f)
589
ret = vmstate_load_state(f, pci_get_vmstate(s), s, s->version_id);
590
/* Restore the interrupt status bit. */
591
pci_update_irq_status(s);
595
static void pci_set_default_subsystem_id(PCIDevice *pci_dev)
597
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID,
598
pci_default_sub_vendor_id);
599
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID,
600
pci_default_sub_device_id);
604
* Parse [[<domain>:]<bus>:]<slot>, return -1 on error if funcp == NULL
605
* [[<domain>:]<bus>:]<slot>.<func>, return -1 on error
607
static int pci_parse_devaddr(const char *addr, int *domp, int *busp,
608
unsigned int *slotp, unsigned int *funcp)
613
unsigned long dom = 0, bus = 0;
614
unsigned int slot = 0;
615
unsigned int func = 0;
618
val = strtoul(p, &e, 16);
624
val = strtoul(p, &e, 16);
631
val = strtoul(p, &e, 16);
644
val = strtoul(p, &e, 16);
651
/* if funcp == NULL func is 0 */
652
if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7)
666
static PCIBus *pci_get_bus_devfn(int *devfnp, PCIBus *root,
673
fprintf(stderr, "No primary PCI bus\n");
677
assert(!root->parent_dev);
681
return pci_find_bus_nr(root, 0);
684
if (pci_parse_devaddr(devaddr, &dom, &bus, &slot, NULL) < 0) {
689
fprintf(stderr, "No support for non-zero PCI domains\n");
693
*devfnp = PCI_DEVFN(slot, 0);
694
return pci_find_bus_nr(root, bus);
697
static void pci_init_cmask(PCIDevice *dev)
699
pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
700
pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
701
dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST;
702
dev->cmask[PCI_REVISION_ID] = 0xff;
703
dev->cmask[PCI_CLASS_PROG] = 0xff;
704
pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
705
dev->cmask[PCI_HEADER_TYPE] = 0xff;
706
dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
709
static void pci_init_wmask(PCIDevice *dev)
711
int config_size = pci_config_size(dev);
713
dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
714
dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
715
pci_set_word(dev->wmask + PCI_COMMAND,
716
PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
717
PCI_COMMAND_INTX_DISABLE);
718
if (dev->cap_present & QEMU_PCI_CAP_SERR) {
719
pci_word_test_and_set_mask(dev->wmask + PCI_COMMAND, PCI_COMMAND_SERR);
722
memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff,
723
config_size - PCI_CONFIG_HEADER_SIZE);
726
static void pci_init_w1cmask(PCIDevice *dev)
729
* Note: It's okay to set w1cmask even for readonly bits as
730
* long as their value is hardwired to 0.
732
pci_set_word(dev->w1cmask + PCI_STATUS,
733
PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
734
PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
735
PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY);
738
static void pci_init_mask_bridge(PCIDevice *d)
740
/* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
741
PCI_SEC_LETENCY_TIMER */
742
memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4);
745
d->wmask[PCI_IO_BASE] = PCI_IO_RANGE_MASK & 0xff;
746
d->wmask[PCI_IO_LIMIT] = PCI_IO_RANGE_MASK & 0xff;
747
pci_set_word(d->wmask + PCI_MEMORY_BASE,
748
PCI_MEMORY_RANGE_MASK & 0xffff);
749
pci_set_word(d->wmask + PCI_MEMORY_LIMIT,
750
PCI_MEMORY_RANGE_MASK & 0xffff);
751
pci_set_word(d->wmask + PCI_PREF_MEMORY_BASE,
752
PCI_PREF_RANGE_MASK & 0xffff);
753
pci_set_word(d->wmask + PCI_PREF_MEMORY_LIMIT,
754
PCI_PREF_RANGE_MASK & 0xffff);
756
/* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
757
memset(d->wmask + PCI_PREF_BASE_UPPER32, 0xff, 8);
759
/* Supported memory and i/o types */
760
d->config[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_16;
761
d->config[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_16;
762
pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_BASE,
763
PCI_PREF_RANGE_TYPE_64);
764
pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_LIMIT,
765
PCI_PREF_RANGE_TYPE_64);
768
* TODO: Bridges default to 10-bit VGA decoding but we currently only
769
* implement 16-bit decoding (no alias support).
771
pci_set_word(d->wmask + PCI_BRIDGE_CONTROL,
772
PCI_BRIDGE_CTL_PARITY |
773
PCI_BRIDGE_CTL_SERR |
776
PCI_BRIDGE_CTL_VGA_16BIT |
777
PCI_BRIDGE_CTL_MASTER_ABORT |
778
PCI_BRIDGE_CTL_BUS_RESET |
779
PCI_BRIDGE_CTL_FAST_BACK |
780
PCI_BRIDGE_CTL_DISCARD |
781
PCI_BRIDGE_CTL_SEC_DISCARD |
782
PCI_BRIDGE_CTL_DISCARD_SERR);
783
/* Below does not do anything as we never set this bit, put here for
785
pci_set_word(d->w1cmask + PCI_BRIDGE_CONTROL,
786
PCI_BRIDGE_CTL_DISCARD_STATUS);
787
d->cmask[PCI_IO_BASE] |= PCI_IO_RANGE_TYPE_MASK;
788
d->cmask[PCI_IO_LIMIT] |= PCI_IO_RANGE_TYPE_MASK;
789
pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_BASE,
790
PCI_PREF_RANGE_TYPE_MASK);
791
pci_word_test_and_set_mask(d->cmask + PCI_PREF_MEMORY_LIMIT,
792
PCI_PREF_RANGE_TYPE_MASK);
795
static void pci_init_multifunction(PCIBus *bus, PCIDevice *dev, Error **errp)
797
uint8_t slot = PCI_SLOT(dev->devfn);
800
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
801
dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION;
805
* multifunction bit is interpreted in two ways as follows.
806
* - all functions must set the bit to 1.
808
* - function 0 must set the bit, but the rest function (> 0)
809
* is allowed to leave the bit to 0.
810
* Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10,
812
* So OS (at least Linux) checks the bit of only function 0,
813
* and doesn't see the bit of function > 0.
815
* The below check allows both interpretation.
817
if (PCI_FUNC(dev->devfn)) {
818
PCIDevice *f0 = bus->devices[PCI_DEVFN(slot, 0)];
819
if (f0 && !(f0->cap_present & QEMU_PCI_CAP_MULTIFUNCTION)) {
820
/* function 0 should set multifunction bit */
821
error_setg(errp, "PCI: single function device can't be populated "
822
"in function %x.%x", slot, PCI_FUNC(dev->devfn));
828
if (dev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
831
/* function 0 indicates single function, so function > 0 must be NULL */
832
for (func = 1; func < PCI_FUNC_MAX; ++func) {
833
if (bus->devices[PCI_DEVFN(slot, func)]) {
834
error_setg(errp, "PCI: %x.0 indicates single function, "
835
"but %x.%x is already populated.",
842
static void pci_config_alloc(PCIDevice *pci_dev)
844
int config_size = pci_config_size(pci_dev);
846
pci_dev->config = g_malloc0(config_size);
847
pci_dev->cmask = g_malloc0(config_size);
848
pci_dev->wmask = g_malloc0(config_size);
849
pci_dev->w1cmask = g_malloc0(config_size);
850
pci_dev->used = g_malloc0(config_size);
853
static void pci_config_free(PCIDevice *pci_dev)
855
g_free(pci_dev->config);
856
g_free(pci_dev->cmask);
857
g_free(pci_dev->wmask);
858
g_free(pci_dev->w1cmask);
859
g_free(pci_dev->used);
862
static void do_pci_unregister_device(PCIDevice *pci_dev)
864
pci_dev->bus->devices[pci_dev->devfn] = NULL;
865
pci_config_free(pci_dev);
867
address_space_destroy(&pci_dev->bus_master_as);
870
/* Extract PCIReqIDCache into BDF format */
871
static uint16_t pci_req_id_cache_extract(PCIReqIDCache *cache)
876
switch (cache->type) {
878
result = pci_get_bdf(cache->dev);
880
case PCI_REQ_ID_SECONDARY_BUS:
881
bus_n = pci_bus_num(cache->dev->bus);
882
result = PCI_BUILD_BDF(bus_n, 0);
885
error_printf("Invalid PCI requester ID cache type: %d\n",
894
/* Parse bridges up to the root complex and return requester ID
895
* cache for specific device. For full PCIe topology, the cache
896
* result would be exactly the same as getting BDF of the device.
897
* However, several tricks are required when system mixed up with
898
* legacy PCI devices and PCIe-to-PCI bridges.
900
* Here we cache the proxy device (and type) not requester ID since
901
* bus number might change from time to time.
903
static PCIReqIDCache pci_req_id_cache_get(PCIDevice *dev)
906
PCIReqIDCache cache = {
908
.type = PCI_REQ_ID_BDF,
911
while (!pci_bus_is_root(dev->bus)) {
912
/* We are under PCI/PCIe bridges */
913
parent = dev->bus->parent_dev;
914
if (pci_is_express(parent)) {
915
if (pcie_cap_get_type(parent) == PCI_EXP_TYPE_PCI_BRIDGE) {
916
/* When we pass through PCIe-to-PCI/PCIX bridges, we
917
* override the requester ID using secondary bus
918
* number of parent bridge with zeroed devfn
919
* (pcie-to-pci bridge spec chap 2.3). */
920
cache.type = PCI_REQ_ID_SECONDARY_BUS;
924
/* Legacy PCI, override requester ID with the bridge's
925
* BDF upstream. When the root complex connects to
926
* legacy PCI devices (including buses), it can only
927
* obtain requester ID info from directly attached
928
* devices. If devices are attached under bridges, only
929
* the requester ID of the bridge that is directly
930
* attached to the root complex can be recognized. */
931
cache.type = PCI_REQ_ID_BDF;
940
uint16_t pci_requester_id(PCIDevice *dev)
942
return pci_req_id_cache_extract(&dev->requester_id_cache);
945
/* -1 for devfn means auto assign */
946
static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
947
const char *name, int devfn,
950
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
951
PCIConfigReadFunc *config_read = pc->config_read;
952
PCIConfigWriteFunc *config_write = pc->config_write;
953
Error *local_err = NULL;
954
DeviceState *dev = DEVICE(pci_dev);
957
/* Only pci bridges can be attached to extra PCI root buses */
958
if (pci_bus_is_root(bus) && bus->parent_dev && !pc->is_bridge) {
960
"PCI: Only PCI/PCIe bridges can be plugged into %s",
961
bus->parent_dev->name);
966
for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);
967
devfn += PCI_FUNC_MAX) {
968
if (!bus->devices[devfn])
971
error_setg(errp, "PCI: no slot/function available for %s, all in use",
975
} else if (bus->devices[devfn]) {
976
error_setg(errp, "PCI: slot %d function %d not available for %s,"
978
PCI_SLOT(devfn), PCI_FUNC(devfn), name,
979
bus->devices[devfn]->name);
981
} else if (dev->hotplugged &&
982
pci_get_function_0(pci_dev)) {
983
error_setg(errp, "PCI: slot %d function 0 already ocuppied by %s,"
984
" new func %s cannot be exposed to guest.",
986
bus->devices[PCI_DEVFN(PCI_SLOT(devfn), 0)]->name,
992
pci_dev->devfn = devfn;
993
pci_dev->requester_id_cache = pci_req_id_cache_get(pci_dev);
996
pci_init_bus_master(pci_dev);
998
pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
999
pci_dev->irq_state = 0;
1000
pci_config_alloc(pci_dev);
1002
pci_config_set_vendor_id(pci_dev->config, pc->vendor_id);
1003
pci_config_set_device_id(pci_dev->config, pc->device_id);
1004
pci_config_set_revision(pci_dev->config, pc->revision);
1005
pci_config_set_class(pci_dev->config, pc->class_id);
1007
if (!pc->is_bridge) {
1008
if (pc->subsystem_vendor_id || pc->subsystem_id) {
1009
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_VENDOR_ID,
1010
pc->subsystem_vendor_id);
1011
pci_set_word(pci_dev->config + PCI_SUBSYSTEM_ID,
1014
pci_set_default_subsystem_id(pci_dev);
1017
/* subsystem_vendor_id/subsystem_id are only for header type 0 */
1018
assert(!pc->subsystem_vendor_id);
1019
assert(!pc->subsystem_id);
1021
pci_init_cmask(pci_dev);
1022
pci_init_wmask(pci_dev);
1023
pci_init_w1cmask(pci_dev);
1024
if (pc->is_bridge) {
1025
pci_init_mask_bridge(pci_dev);
1027
pci_init_multifunction(bus, pci_dev, &local_err);
1029
error_propagate(errp, local_err);
1030
do_pci_unregister_device(pci_dev);
1035
config_read = pci_default_read_config;
1037
config_write = pci_default_write_config;
1038
pci_dev->config_read = config_read;
1039
pci_dev->config_write = config_write;
1040
bus->devices[devfn] = pci_dev;
1041
pci_dev->version_id = 2; /* Current pci device vmstate version */
1045
static void pci_unregister_io_regions(PCIDevice *pci_dev)
1050
for(i = 0; i < PCI_NUM_REGIONS; i++) {
1051
r = &pci_dev->io_regions[i];
1052
if (!r->size || r->addr == PCI_BAR_UNMAPPED)
1054
memory_region_del_subregion(r->address_space, r->memory);
1057
pci_unregister_vga(pci_dev);
1060
static void pci_qdev_unrealize(DeviceState *dev, Error **errp)
1062
PCIDevice *pci_dev = PCI_DEVICE(dev);
1063
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
1065
pci_unregister_io_regions(pci_dev);
1066
pci_del_option_rom(pci_dev);
1072
do_pci_unregister_device(pci_dev);
1075
void pci_register_bar(PCIDevice *pci_dev, int region_num,
1076
uint8_t type, MemoryRegion *memory)
1079
uint32_t addr; /* offset in pci config space */
1081
pcibus_t size = memory_region_size(memory);
1083
assert(region_num >= 0);
1084
assert(region_num < PCI_NUM_REGIONS);
1085
if (size & (size-1)) {
1086
fprintf(stderr, "ERROR: PCI region size must be pow2 "
1087
"type=0x%x, size=0x%"FMT_PCIBUS"\n", type, size);
1091
r = &pci_dev->io_regions[region_num];
1092
r->addr = PCI_BAR_UNMAPPED;
1096
r->address_space = type & PCI_BASE_ADDRESS_SPACE_IO
1097
? pci_dev->bus->address_space_io
1098
: pci_dev->bus->address_space_mem;
1100
wmask = ~(size - 1);
1101
if (region_num == PCI_ROM_SLOT) {
1102
/* ROM enable bit is writable */
1103
wmask |= PCI_ROM_ADDRESS_ENABLE;
1106
addr = pci_bar(pci_dev, region_num);
1107
pci_set_long(pci_dev->config + addr, type);
1109
if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
1110
r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
1111
pci_set_quad(pci_dev->wmask + addr, wmask);
1112
pci_set_quad(pci_dev->cmask + addr, ~0ULL);
1114
pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
1115
pci_set_long(pci_dev->cmask + addr, 0xffffffff);
1119
static void pci_update_vga(PCIDevice *pci_dev)
1123
if (!pci_dev->has_vga) {
1127
cmd = pci_get_word(pci_dev->config + PCI_COMMAND);
1129
memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_MEM],
1130
cmd & PCI_COMMAND_MEMORY);
1131
memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO],
1132
cmd & PCI_COMMAND_IO);
1133
memory_region_set_enabled(pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI],
1134
cmd & PCI_COMMAND_IO);
1137
void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem,
1138
MemoryRegion *io_lo, MemoryRegion *io_hi)
1140
assert(!pci_dev->has_vga);
1142
assert(memory_region_size(mem) == QEMU_PCI_VGA_MEM_SIZE);
1143
pci_dev->vga_regions[QEMU_PCI_VGA_MEM] = mem;
1144
memory_region_add_subregion_overlap(pci_dev->bus->address_space_mem,
1145
QEMU_PCI_VGA_MEM_BASE, mem, 1);
1147
assert(memory_region_size(io_lo) == QEMU_PCI_VGA_IO_LO_SIZE);
1148
pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO] = io_lo;
1149
memory_region_add_subregion_overlap(pci_dev->bus->address_space_io,
1150
QEMU_PCI_VGA_IO_LO_BASE, io_lo, 1);
1152
assert(memory_region_size(io_hi) == QEMU_PCI_VGA_IO_HI_SIZE);
1153
pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI] = io_hi;
1154
memory_region_add_subregion_overlap(pci_dev->bus->address_space_io,
1155
QEMU_PCI_VGA_IO_HI_BASE, io_hi, 1);
1156
pci_dev->has_vga = true;
1158
pci_update_vga(pci_dev);
1161
void pci_unregister_vga(PCIDevice *pci_dev)
1163
if (!pci_dev->has_vga) {
1167
memory_region_del_subregion(pci_dev->bus->address_space_mem,
1168
pci_dev->vga_regions[QEMU_PCI_VGA_MEM]);
1169
memory_region_del_subregion(pci_dev->bus->address_space_io,
1170
pci_dev->vga_regions[QEMU_PCI_VGA_IO_LO]);
1171
memory_region_del_subregion(pci_dev->bus->address_space_io,
1172
pci_dev->vga_regions[QEMU_PCI_VGA_IO_HI]);
1173
pci_dev->has_vga = false;
1176
pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num)
1178
return pci_dev->io_regions[region_num].addr;
1181
static pcibus_t pci_bar_address(PCIDevice *d,
1182
int reg, uint8_t type, pcibus_t size)
1184
pcibus_t new_addr, last_addr;
1185
int bar = pci_bar(d, reg);
1186
uint16_t cmd = pci_get_word(d->config + PCI_COMMAND);
1187
Object *machine = qdev_get_machine();
1188
ObjectClass *oc = object_get_class(machine);
1189
MachineClass *mc = MACHINE_CLASS(oc);
1190
bool allow_0_address = mc->pci_allow_0_address;
1192
if (type & PCI_BASE_ADDRESS_SPACE_IO) {
1193
if (!(cmd & PCI_COMMAND_IO)) {
1194
return PCI_BAR_UNMAPPED;
1196
new_addr = pci_get_long(d->config + bar) & ~(size - 1);
1197
last_addr = new_addr + size - 1;
1198
/* Check if 32 bit BAR wraps around explicitly.
1199
* TODO: make priorities correct and remove this work around.
1201
if (last_addr <= new_addr || last_addr >= UINT32_MAX ||
1202
(!allow_0_address && new_addr == 0)) {
1203
return PCI_BAR_UNMAPPED;
1208
if (!(cmd & PCI_COMMAND_MEMORY)) {
1209
return PCI_BAR_UNMAPPED;
1211
if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
1212
new_addr = pci_get_quad(d->config + bar);
1214
new_addr = pci_get_long(d->config + bar);
1216
/* the ROM slot has a specific enable bit */
1217
if (reg == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) {
1218
return PCI_BAR_UNMAPPED;
1220
new_addr &= ~(size - 1);
1221
last_addr = new_addr + size - 1;
1222
/* NOTE: we do not support wrapping */
1223
/* XXX: as we cannot support really dynamic
1224
mappings, we handle specific values as invalid
1226
if (last_addr <= new_addr || last_addr == PCI_BAR_UNMAPPED ||
1227
(!allow_0_address && new_addr == 0)) {
1228
return PCI_BAR_UNMAPPED;
1231
/* Now pcibus_t is 64bit.
1232
* Check if 32 bit BAR wraps around explicitly.
1233
* Without this, PC ide doesn't work well.
1234
* TODO: remove this work around.
1236
if (!(type & PCI_BASE_ADDRESS_MEM_TYPE_64) && last_addr >= UINT32_MAX) {
1237
return PCI_BAR_UNMAPPED;
1241
* OS is allowed to set BAR beyond its addressable
1242
* bits. For example, 32 bit OS can set 64bit bar
1243
* to >4G. Check it. TODO: we might need to support
1244
* it in the future for e.g. PAE.
1246
if (last_addr >= HWADDR_MAX) {
1247
return PCI_BAR_UNMAPPED;
1253
static void pci_update_mappings(PCIDevice *d)
1259
for(i = 0; i < PCI_NUM_REGIONS; i++) {
1260
r = &d->io_regions[i];
1262
/* this region isn't registered */
1266
new_addr = pci_bar_address(d, i, r->type, r->size);
1268
/* This bar isn't changed */
1269
if (new_addr == r->addr)
1272
/* now do the real mapping */
1273
if (r->addr != PCI_BAR_UNMAPPED) {
1274
trace_pci_update_mappings_del(d, pci_bus_num(d->bus),
1277
i, r->addr, r->size);
1278
memory_region_del_subregion(r->address_space, r->memory);
1281
if (r->addr != PCI_BAR_UNMAPPED) {
1282
trace_pci_update_mappings_add(d, pci_bus_num(d->bus),
1285
i, r->addr, r->size);
1286
memory_region_add_subregion_overlap(r->address_space,
1287
r->addr, r->memory, 1);
1294
static inline int pci_irq_disabled(PCIDevice *d)
1296
return pci_get_word(d->config + PCI_COMMAND) & PCI_COMMAND_INTX_DISABLE;
1299
/* Called after interrupt disabled field update in config space,
1300
* assert/deassert interrupts if necessary.
1301
* Gets original interrupt disable bit value (before update). */
1302
static void pci_update_irq_disabled(PCIDevice *d, int was_irq_disabled)
1304
int i, disabled = pci_irq_disabled(d);
1305
if (disabled == was_irq_disabled)
1307
for (i = 0; i < PCI_NUM_PINS; ++i) {
1308
int state = pci_irq_state(d, i);
1309
pci_change_irq_level(d, i, disabled ? -state : state);
1313
uint32_t pci_default_read_config(PCIDevice *d,
1314
uint32_t address, int len)
1318
memcpy(&val, d->config + address, len);
1319
return le32_to_cpu(val);
1322
void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val_in, int l)
1324
int i, was_irq_disabled = pci_irq_disabled(d);
1325
uint32_t val = val_in;
1327
for (i = 0; i < l; val >>= 8, ++i) {
1328
uint8_t wmask = d->wmask[addr + i];
1329
uint8_t w1cmask = d->w1cmask[addr + i];
1330
assert(!(wmask & w1cmask));
1331
d->config[addr + i] = (d->config[addr + i] & ~wmask) | (val & wmask);
1332
d->config[addr + i] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */
1334
if (ranges_overlap(addr, l, PCI_BASE_ADDRESS_0, 24) ||
1335
ranges_overlap(addr, l, PCI_ROM_ADDRESS, 4) ||
1336
ranges_overlap(addr, l, PCI_ROM_ADDRESS1, 4) ||
1337
range_covers_byte(addr, l, PCI_COMMAND))
1338
pci_update_mappings(d);
1340
if (range_covers_byte(addr, l, PCI_COMMAND)) {
1341
pci_update_irq_disabled(d, was_irq_disabled);
1342
memory_region_set_enabled(&d->bus_master_enable_region,
1343
pci_get_word(d->config + PCI_COMMAND)
1344
& PCI_COMMAND_MASTER);
1347
msi_write_config(d, addr, val_in, l);
1348
msix_write_config(d, addr, val_in, l);
1351
/***********************************************************/
1352
/* generic PCI irq support */
1354
/* 0 <= irq_num <= 3. level must be 0 or 1 */
1355
static void pci_irq_handler(void *opaque, int irq_num, int level)
1357
PCIDevice *pci_dev = opaque;
1360
change = level - pci_irq_state(pci_dev, irq_num);
1364
pci_set_irq_state(pci_dev, irq_num, level);
1365
pci_update_irq_status(pci_dev);
1366
if (pci_irq_disabled(pci_dev))
1368
pci_change_irq_level(pci_dev, irq_num, change);
1371
static inline int pci_intx(PCIDevice *pci_dev)
1373
return pci_get_byte(pci_dev->config + PCI_INTERRUPT_PIN) - 1;
1376
qemu_irq pci_allocate_irq(PCIDevice *pci_dev)
1378
int intx = pci_intx(pci_dev);
1380
return qemu_allocate_irq(pci_irq_handler, pci_dev, intx);
1383
void pci_set_irq(PCIDevice *pci_dev, int level)
1385
int intx = pci_intx(pci_dev);
1386
pci_irq_handler(pci_dev, intx, level);
1389
/* Special hooks used by device assignment */
1390
void pci_bus_set_route_irq_fn(PCIBus *bus, pci_route_irq_fn route_intx_to_irq)
1392
assert(pci_bus_is_root(bus));
1393
bus->route_intx_to_irq = route_intx_to_irq;
1396
PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin)
1402
pin = bus->map_irq(dev, pin);
1403
dev = bus->parent_dev;
1406
if (!bus->route_intx_to_irq) {
1407
error_report("PCI: Bug - unimplemented PCI INTx routing (%s)",
1408
object_get_typename(OBJECT(bus->qbus.parent)));
1409
return (PCIINTxRoute) { PCI_INTX_DISABLED, -1 };
1412
return bus->route_intx_to_irq(bus->irq_opaque, pin);
1415
bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new)
1417
return old->mode != new->mode || old->irq != new->irq;
1420
void pci_bus_fire_intx_routing_notifier(PCIBus *bus)
1426
for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
1427
dev = bus->devices[i];
1428
if (dev && dev->intx_routing_notifier) {
1429
dev->intx_routing_notifier(dev);
1433
QLIST_FOREACH(sec, &bus->child, sibling) {
1434
pci_bus_fire_intx_routing_notifier(sec);
1438
void pci_device_set_intx_routing_notifier(PCIDevice *dev,
1439
PCIINTxRoutingNotifier notifier)
1441
dev->intx_routing_notifier = notifier;
1445
* PCI-to-PCI bridge specification
1446
* 9.1: Interrupt routing. Table 9-1
1448
* the PCI Express Base Specification, Revision 2.1
1449
* 2.2.8.1: INTx interrutp signaling - Rules
1450
* the Implementation Note
1454
* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD
1455
* 0-origin unlike PCI interrupt pin register.
1457
int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin)
1459
return (pin + PCI_SLOT(pci_dev->devfn)) % PCI_NUM_PINS;
1462
/***********************************************************/
1463
/* monitor info on PCI */
1468
const char *fw_name;
1469
uint16_t fw_ign_bits;
1472
static const pci_class_desc pci_class_descriptions[] =
1474
{ 0x0001, "VGA controller", "display"},
1475
{ 0x0100, "SCSI controller", "scsi"},
1476
{ 0x0101, "IDE controller", "ide"},
1477
{ 0x0102, "Floppy controller", "fdc"},
1478
{ 0x0103, "IPI controller", "ipi"},
1479
{ 0x0104, "RAID controller", "raid"},
1480
{ 0x0106, "SATA controller"},
1481
{ 0x0107, "SAS controller"},
1482
{ 0x0180, "Storage controller"},
1483
{ 0x0200, "Ethernet controller", "ethernet"},
1484
{ 0x0201, "Token Ring controller", "token-ring"},
1485
{ 0x0202, "FDDI controller", "fddi"},
1486
{ 0x0203, "ATM controller", "atm"},
1487
{ 0x0280, "Network controller"},
1488
{ 0x0300, "VGA controller", "display", 0x00ff},
1489
{ 0x0301, "XGA controller"},
1490
{ 0x0302, "3D controller"},
1491
{ 0x0380, "Display controller"},
1492
{ 0x0400, "Video controller", "video"},
1493
{ 0x0401, "Audio controller", "sound"},
1495
{ 0x0403, "Audio controller", "sound"},
1496
{ 0x0480, "Multimedia controller"},
1497
{ 0x0500, "RAM controller", "memory"},
1498
{ 0x0501, "Flash controller", "flash"},
1499
{ 0x0580, "Memory controller"},
1500
{ 0x0600, "Host bridge", "host"},
1501
{ 0x0601, "ISA bridge", "isa"},
1502
{ 0x0602, "EISA bridge", "eisa"},
1503
{ 0x0603, "MC bridge", "mca"},
1504
{ 0x0604, "PCI bridge", "pci-bridge"},
1505
{ 0x0605, "PCMCIA bridge", "pcmcia"},
1506
{ 0x0606, "NUBUS bridge", "nubus"},
1507
{ 0x0607, "CARDBUS bridge", "cardbus"},
1508
{ 0x0608, "RACEWAY bridge"},
1509
{ 0x0680, "Bridge"},
1510
{ 0x0700, "Serial port", "serial"},
1511
{ 0x0701, "Parallel port", "parallel"},
1512
{ 0x0800, "Interrupt controller", "interrupt-controller"},
1513
{ 0x0801, "DMA controller", "dma-controller"},
1514
{ 0x0802, "Timer", "timer"},
1515
{ 0x0803, "RTC", "rtc"},
1516
{ 0x0900, "Keyboard", "keyboard"},
1517
{ 0x0901, "Pen", "pen"},
1518
{ 0x0902, "Mouse", "mouse"},
1519
{ 0x0A00, "Dock station", "dock", 0x00ff},
1520
{ 0x0B00, "i386 cpu", "cpu", 0x00ff},
1521
{ 0x0c00, "Fireware contorller", "fireware"},
1522
{ 0x0c01, "Access bus controller", "access-bus"},
1523
{ 0x0c02, "SSA controller", "ssa"},
1524
{ 0x0c03, "USB controller", "usb"},
1525
{ 0x0c04, "Fibre channel controller", "fibre-channel"},
1530
static void pci_for_each_device_under_bus(PCIBus *bus,
1531
void (*fn)(PCIBus *b, PCIDevice *d,
1538
for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
1539
d = bus->devices[devfn];
1546
void pci_for_each_device(PCIBus *bus, int bus_num,
1547
void (*fn)(PCIBus *b, PCIDevice *d, void *opaque),
1550
bus = pci_find_bus_nr(bus, bus_num);
1553
pci_for_each_device_under_bus(bus, fn, opaque);
1557
static const pci_class_desc *get_class_desc(int class)
1559
const pci_class_desc *desc;
1561
desc = pci_class_descriptions;
1562
while (desc->desc && class != desc->class) {
1569
static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num);
1571
static PciMemoryRegionList *qmp_query_pci_regions(const PCIDevice *dev)
1573
PciMemoryRegionList *head = NULL, *cur_item = NULL;
1576
for (i = 0; i < PCI_NUM_REGIONS; i++) {
1577
const PCIIORegion *r = &dev->io_regions[i];
1578
PciMemoryRegionList *region;
1584
region = g_malloc0(sizeof(*region));
1585
region->value = g_malloc0(sizeof(*region->value));
1587
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
1588
region->value->type = g_strdup("io");
1590
region->value->type = g_strdup("memory");
1591
region->value->has_prefetch = true;
1592
region->value->prefetch = !!(r->type & PCI_BASE_ADDRESS_MEM_PREFETCH);
1593
region->value->has_mem_type_64 = true;
1594
region->value->mem_type_64 = !!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64);
1597
region->value->bar = i;
1598
region->value->address = r->addr;
1599
region->value->size = r->size;
1601
/* XXX: waiting for the qapi to support GSList */
1603
head = cur_item = region;
1605
cur_item->next = region;
1613
static PciBridgeInfo *qmp_query_pci_bridge(PCIDevice *dev, PCIBus *bus,
1616
PciBridgeInfo *info;
1617
PciMemoryRange *range;
1619
info = g_new0(PciBridgeInfo, 1);
1621
info->bus = g_new0(PciBusInfo, 1);
1622
info->bus->number = dev->config[PCI_PRIMARY_BUS];
1623
info->bus->secondary = dev->config[PCI_SECONDARY_BUS];
1624
info->bus->subordinate = dev->config[PCI_SUBORDINATE_BUS];
1626
range = info->bus->io_range = g_new0(PciMemoryRange, 1);
1627
range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO);
1628
range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO);
1630
range = info->bus->memory_range = g_new0(PciMemoryRange, 1);
1631
range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
1632
range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
1634
range = info->bus->prefetchable_range = g_new0(PciMemoryRange, 1);
1635
range->base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
1636
range->limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
1638
if (dev->config[PCI_SECONDARY_BUS] != 0) {
1639
PCIBus *child_bus = pci_find_bus_nr(bus, dev->config[PCI_SECONDARY_BUS]);
1641
info->has_devices = true;
1642
info->devices = qmp_query_pci_devices(child_bus, dev->config[PCI_SECONDARY_BUS]);
1649
static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus,
1652
const pci_class_desc *desc;
1653
PciDeviceInfo *info;
1657
info = g_new0(PciDeviceInfo, 1);
1658
info->bus = bus_num;
1659
info->slot = PCI_SLOT(dev->devfn);
1660
info->function = PCI_FUNC(dev->devfn);
1662
info->class_info = g_new0(PciDeviceClass, 1);
1663
class = pci_get_word(dev->config + PCI_CLASS_DEVICE);
1664
info->class_info->q_class = class;
1665
desc = get_class_desc(class);
1667
info->class_info->has_desc = true;
1668
info->class_info->desc = g_strdup(desc->desc);
1671
info->id = g_new0(PciDeviceId, 1);
1672
info->id->vendor = pci_get_word(dev->config + PCI_VENDOR_ID);
1673
info->id->device = pci_get_word(dev->config + PCI_DEVICE_ID);
1674
info->regions = qmp_query_pci_regions(dev);
1675
info->qdev_id = g_strdup(dev->qdev.id ? dev->qdev.id : "");
1677
if (dev->config[PCI_INTERRUPT_PIN] != 0) {
1678
info->has_irq = true;
1679
info->irq = dev->config[PCI_INTERRUPT_LINE];
1682
type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
1683
if (type == PCI_HEADER_TYPE_BRIDGE) {
1684
info->has_pci_bridge = true;
1685
info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num);
1691
static PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num)
1693
PciDeviceInfoList *info, *head = NULL, *cur_item = NULL;
1697
for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
1698
dev = bus->devices[devfn];
1700
info = g_malloc0(sizeof(*info));
1701
info->value = qmp_query_pci_device(dev, bus, bus_num);
1703
/* XXX: waiting for the qapi to support GSList */
1705
head = cur_item = info;
1707
cur_item->next = info;
1716
static PciInfo *qmp_query_pci_bus(PCIBus *bus, int bus_num)
1718
PciInfo *info = NULL;
1720
bus = pci_find_bus_nr(bus, bus_num);
1722
info = g_malloc0(sizeof(*info));
1723
info->bus = bus_num;
1724
info->devices = qmp_query_pci_devices(bus, bus_num);
1730
PciInfoList *qmp_query_pci(Error **errp)
1732
PciInfoList *info, *head = NULL, *cur_item = NULL;
1733
PCIHostState *host_bridge;
1735
QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
1736
info = g_malloc0(sizeof(*info));
1737
info->value = qmp_query_pci_bus(host_bridge->bus,
1738
pci_bus_num(host_bridge->bus));
1740
/* XXX: waiting for the qapi to support GSList */
1742
head = cur_item = info;
1744
cur_item->next = info;
1752
static const char * const pci_nic_models[] = {
1764
static const char * const pci_nic_names[] = {
1776
/* Initialize a PCI NIC. */
1777
PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
1778
const char *default_model,
1779
const char *default_devaddr)
1781
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr;
1789
if (qemu_show_nic_models(nd->model, pci_nic_models)) {
1793
i = qemu_find_nic_model(nd, pci_nic_models, default_model);
1798
bus = pci_get_bus_devfn(&devfn, rootbus, devaddr);
1800
error_report("Invalid PCI device address %s for device %s",
1801
devaddr, pci_nic_names[i]);
1805
pci_dev = pci_create(bus, devfn, pci_nic_names[i]);
1806
dev = &pci_dev->qdev;
1807
qdev_set_nic_properties(dev, nd);
1809
object_property_set_bool(OBJECT(dev), true, "realized", &err);
1811
error_report_err(err);
1812
object_unparent(OBJECT(dev));
1819
PCIDevice *pci_vga_init(PCIBus *bus)
1821
switch (vga_interface_type) {
1823
return pci_create_simple(bus, -1, "cirrus-vga");
1825
return pci_create_simple(bus, -1, "qxl-vga");
1827
return pci_create_simple(bus, -1, "VGA");
1829
return pci_create_simple(bus, -1, "vmware-svga");
1831
return pci_create_simple(bus, -1, "virtio-vga");
1833
default: /* Other non-PCI types. Checking for unsupported types is already
1839
/* Whether a given bus number is in range of the secondary
1840
* bus of the given bridge device. */
1841
static bool pci_secondary_bus_in_range(PCIDevice *dev, int bus_num)
1843
return !(pci_get_word(dev->config + PCI_BRIDGE_CONTROL) &
1844
PCI_BRIDGE_CTL_BUS_RESET) /* Don't walk the bus if it's reset. */ &&
1845
dev->config[PCI_SECONDARY_BUS] <= bus_num &&
1846
bus_num <= dev->config[PCI_SUBORDINATE_BUS];
1849
/* Whether a given bus number is in a range of a root bus */
1850
static bool pci_root_bus_in_range(PCIBus *bus, int bus_num)
1854
for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
1855
PCIDevice *dev = bus->devices[i];
1857
if (dev && PCI_DEVICE_GET_CLASS(dev)->is_bridge) {
1858
if (pci_secondary_bus_in_range(dev, bus_num)) {
1867
static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num)
1875
if (pci_bus_num(bus) == bus_num) {
1879
/* Consider all bus numbers in range for the host pci bridge. */
1880
if (!pci_bus_is_root(bus) &&
1881
!pci_secondary_bus_in_range(bus->parent_dev, bus_num)) {
1886
for (; bus; bus = sec) {
1887
QLIST_FOREACH(sec, &bus->child, sibling) {
1888
if (pci_bus_num(sec) == bus_num) {
1891
/* PXB buses assumed to be children of bus 0 */
1892
if (pci_bus_is_root(sec)) {
1893
if (pci_root_bus_in_range(sec, bus_num)) {
1897
if (pci_secondary_bus_in_range(sec->parent_dev, bus_num)) {
1907
void pci_for_each_bus_depth_first(PCIBus *bus,
1908
void *(*begin)(PCIBus *bus, void *parent_state),
1909
void (*end)(PCIBus *bus, void *state),
1920
state = begin(bus, parent_state);
1922
state = parent_state;
1925
QLIST_FOREACH(sec, &bus->child, sibling) {
1926
pci_for_each_bus_depth_first(sec, begin, end, state);
1935
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn)
1937
bus = pci_find_bus_nr(bus, bus_num);
1942
return bus->devices[devfn];
1945
static void pci_qdev_realize(DeviceState *qdev, Error **errp)
1947
PCIDevice *pci_dev = (PCIDevice *)qdev;
1948
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
1949
Error *local_err = NULL;
1951
bool is_default_rom;
1953
/* initialize cap_present for pci_is_express() and pci_config_size() */
1954
if (pc->is_express) {
1955
pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
1958
bus = PCI_BUS(qdev_get_parent_bus(qdev));
1959
pci_dev = do_pci_register_device(pci_dev, bus,
1960
object_get_typename(OBJECT(qdev)),
1961
pci_dev->devfn, errp);
1962
if (pci_dev == NULL)
1966
pc->realize(pci_dev, &local_err);
1968
error_propagate(errp, local_err);
1969
do_pci_unregister_device(pci_dev);
1975
is_default_rom = false;
1976
if (pci_dev->romfile == NULL && pc->romfile != NULL) {
1977
pci_dev->romfile = g_strdup(pc->romfile);
1978
is_default_rom = true;
1981
pci_add_option_rom(pci_dev, is_default_rom, &local_err);
1983
error_propagate(errp, local_err);
1984
pci_qdev_unrealize(DEVICE(pci_dev), NULL);
1989
static void pci_default_realize(PCIDevice *dev, Error **errp)
1991
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
1994
if (pc->init(dev) < 0) {
1995
error_setg(errp, "Device initialization failed");
2001
PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
2006
dev = qdev_create(&bus->qbus, name);
2007
qdev_prop_set_int32(dev, "addr", devfn);
2008
qdev_prop_set_bit(dev, "multifunction", multifunction);
2009
return PCI_DEVICE(dev);
2012
PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,
2016
PCIDevice *dev = pci_create_multifunction(bus, devfn, multifunction, name);
2017
qdev_init_nofail(&dev->qdev);
2021
PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name)
2023
return pci_create_multifunction(bus, devfn, false, name);
2026
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name)
2028
return pci_create_simple_multifunction(bus, devfn, false, name);
2031
static uint8_t pci_find_space(PCIDevice *pdev, uint8_t size)
2033
int offset = PCI_CONFIG_HEADER_SIZE;
2035
for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i) {
2038
else if (i - offset + 1 == size)
2044
static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
2049
if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
2052
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
2053
prev = next + PCI_CAP_LIST_NEXT)
2054
if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
2062
static uint8_t pci_find_capability_at_offset(PCIDevice *pdev, uint8_t offset)
2064
uint8_t next, prev, found = 0;
2066
if (!(pdev->used[offset])) {
2070
assert(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST);
2072
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
2073
prev = next + PCI_CAP_LIST_NEXT) {
2074
if (next <= offset && next > found) {
2081
/* Patch the PCI vendor and device ids in a PCI rom image if necessary.
2082
This is needed for an option rom which is used for more than one device. */
2083
static void pci_patch_ids(PCIDevice *pdev, uint8_t *ptr, int size)
2087
uint16_t rom_vendor_id;
2088
uint16_t rom_device_id;
2090
uint16_t pcir_offset;
2093
/* Words in rom data are little endian (like in PCI configuration),
2094
so they can be read / written with pci_get_word / pci_set_word. */
2096
/* Only a valid rom will be patched. */
2097
rom_magic = pci_get_word(ptr);
2098
if (rom_magic != 0xaa55) {
2099
PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic);
2102
pcir_offset = pci_get_word(ptr + 0x18);
2103
if (pcir_offset + 8 >= size || memcmp(ptr + pcir_offset, "PCIR", 4)) {
2104
PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset);
2108
vendor_id = pci_get_word(pdev->config + PCI_VENDOR_ID);
2109
device_id = pci_get_word(pdev->config + PCI_DEVICE_ID);
2110
rom_vendor_id = pci_get_word(ptr + pcir_offset + 4);
2111
rom_device_id = pci_get_word(ptr + pcir_offset + 6);
2113
PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev->romfile,
2114
vendor_id, device_id, rom_vendor_id, rom_device_id);
2118
if (vendor_id != rom_vendor_id) {
2119
/* Patch vendor id and checksum (at offset 6 for etherboot roms). */
2120
checksum += (uint8_t)rom_vendor_id + (uint8_t)(rom_vendor_id >> 8);
2121
checksum -= (uint8_t)vendor_id + (uint8_t)(vendor_id >> 8);
2122
PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum);
2124
pci_set_word(ptr + pcir_offset + 4, vendor_id);
2127
if (device_id != rom_device_id) {
2128
/* Patch device id and checksum (at offset 6 for etherboot roms). */
2129
checksum += (uint8_t)rom_device_id + (uint8_t)(rom_device_id >> 8);
2130
checksum -= (uint8_t)device_id + (uint8_t)(device_id >> 8);
2131
PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr[6], checksum);
2133
pci_set_word(ptr + pcir_offset + 6, device_id);
2137
/* Add an option rom for the device */
2138
static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom,
2145
const VMStateDescription *vmsd;
2149
if (strlen(pdev->romfile) == 0)
2152
if (!pdev->rom_bar) {
2154
* Load rom via fw_cfg instead of creating a rom bar,
2155
* for 0.11 compatibility.
2157
int class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
2160
* Hot-plugged devices can't use the option ROM
2161
* if the rom bar is disabled.
2163
if (DEVICE(pdev)->hotplugged) {
2164
error_setg(errp, "Hot-plugged device without ROM bar"
2165
" can't have an option ROM");
2169
if (class == 0x0300) {
2170
rom_add_vga(pdev->romfile);
2172
rom_add_option(pdev->romfile, -1);
2177
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile);
2179
path = g_strdup(pdev->romfile);
2182
size = get_image_size(path);
2184
error_setg(errp, "failed to find romfile \"%s\"", pdev->romfile);
2187
} else if (size == 0) {
2188
error_setg(errp, "romfile \"%s\" is empty", pdev->romfile);
2192
size = pow2ceil(size);
2194
vmsd = qdev_get_vmsd(DEVICE(pdev));
2197
snprintf(name, sizeof(name), "%s.rom", vmsd->name);
2199
snprintf(name, sizeof(name), "%s.rom", object_get_typename(OBJECT(pdev)));
2201
pdev->has_rom = true;
2202
memory_region_init_ram(&pdev->rom, OBJECT(pdev), name, size, &error_fatal);
2203
vmstate_register_ram(&pdev->rom, &pdev->qdev);
2204
ptr = memory_region_get_ram_ptr(&pdev->rom);
2205
load_image(path, ptr);
2208
if (is_default_rom) {
2209
/* Only the default rom images will be patched (if needed). */
2210
pci_patch_ids(pdev, ptr, size);
2213
pci_register_bar(pdev, PCI_ROM_SLOT, 0, &pdev->rom);
2216
static void pci_del_option_rom(PCIDevice *pdev)
2221
vmstate_unregister_ram(&pdev->rom, &pdev->qdev);
2222
pdev->has_rom = false;
2227
* Find and reserve space and add capability to the linked list
2228
* in pci config space
2230
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
2231
uint8_t offset, uint8_t size)
2234
Error *local_err = NULL;
2236
ret = pci_add_capability2(pdev, cap_id, offset, size, &local_err);
2239
error_report_err(local_err);
2241
/* success implies a positive offset in config space */
2247
int pci_add_capability2(PCIDevice *pdev, uint8_t cap_id,
2248
uint8_t offset, uint8_t size,
2252
int i, overlapping_cap;
2255
offset = pci_find_space(pdev, size);
2256
/* out of PCI config space is programming error */
2259
/* Verify that capabilities don't overlap. Note: device assignment
2260
* depends on this check to verify that the device is not broken.
2261
* Should never trigger for emulated devices, but it's helpful
2262
* for debugging these. */
2263
for (i = offset; i < offset + size; i++) {
2264
overlapping_cap = pci_find_capability_at_offset(pdev, i);
2265
if (overlapping_cap) {
2266
error_setg(errp, "%s:%02x:%02x.%x "
2267
"Attempt to add PCI capability %x at offset "
2268
"%x overlaps existing capability %x at offset %x",
2269
pci_root_bus_path(pdev), pci_bus_num(pdev->bus),
2270
PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
2271
cap_id, offset, overlapping_cap, i);
2277
config = pdev->config + offset;
2278
config[PCI_CAP_LIST_ID] = cap_id;
2279
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST];
2280
pdev->config[PCI_CAPABILITY_LIST] = offset;
2281
pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST;
2282
memset(pdev->used + offset, 0xFF, QEMU_ALIGN_UP(size, 4));
2283
/* Make capability read-only by default */
2284
memset(pdev->wmask + offset, 0, size);
2285
/* Check capability by default */
2286
memset(pdev->cmask + offset, 0xFF, size);
2290
/* Unlink capability from the pci config space. */
2291
void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
2293
uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev);
2296
pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT];
2297
/* Make capability writable again */
2298
memset(pdev->wmask + offset, 0xff, size);
2299
memset(pdev->w1cmask + offset, 0, size);
2300
/* Clear cmask as device-specific registers can't be checked */
2301
memset(pdev->cmask + offset, 0, size);
2302
memset(pdev->used + offset, 0, QEMU_ALIGN_UP(size, 4));
2304
if (!pdev->config[PCI_CAPABILITY_LIST])
2305
pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST;
2308
uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id)
2310
return pci_find_capability_list(pdev, cap_id, NULL);
2313
static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
2315
PCIDevice *d = (PCIDevice *)dev;
2316
const pci_class_desc *desc;
2321
class = pci_get_word(d->config + PCI_CLASS_DEVICE);
2322
desc = pci_class_descriptions;
2323
while (desc->desc && class != desc->class)
2326
snprintf(ctxt, sizeof(ctxt), "%s", desc->desc);
2328
snprintf(ctxt, sizeof(ctxt), "Class %04x", class);
2331
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
2332
"pci id %04x:%04x (sub %04x:%04x)\n",
2333
indent, "", ctxt, pci_bus_num(d->bus),
2334
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
2335
pci_get_word(d->config + PCI_VENDOR_ID),
2336
pci_get_word(d->config + PCI_DEVICE_ID),
2337
pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID),
2338
pci_get_word(d->config + PCI_SUBSYSTEM_ID));
2339
for (i = 0; i < PCI_NUM_REGIONS; i++) {
2340
r = &d->io_regions[i];
2343
monitor_printf(mon, "%*sbar %d: %s at 0x%"FMT_PCIBUS
2344
" [0x%"FMT_PCIBUS"]\n",
2346
i, r->type & PCI_BASE_ADDRESS_SPACE_IO ? "i/o" : "mem",
2347
r->addr, r->addr + r->size - 1);
2351
static char *pci_dev_fw_name(DeviceState *dev, char *buf, int len)
2353
PCIDevice *d = (PCIDevice *)dev;
2354
const char *name = NULL;
2355
const pci_class_desc *desc = pci_class_descriptions;
2356
int class = pci_get_word(d->config + PCI_CLASS_DEVICE);
2358
while (desc->desc &&
2359
(class & ~desc->fw_ign_bits) !=
2360
(desc->class & ~desc->fw_ign_bits)) {
2365
name = desc->fw_name;
2369
pstrcpy(buf, len, name);
2371
snprintf(buf, len, "pci%04x,%04x",
2372
pci_get_word(d->config + PCI_VENDOR_ID),
2373
pci_get_word(d->config + PCI_DEVICE_ID));
2379
static char *pcibus_get_fw_dev_path(DeviceState *dev)
2381
PCIDevice *d = (PCIDevice *)dev;
2382
char path[50], name[33];
2385
off = snprintf(path, sizeof(path), "%s@%x",
2386
pci_dev_fw_name(dev, name, sizeof name),
2387
PCI_SLOT(d->devfn));
2388
if (PCI_FUNC(d->devfn))
2389
snprintf(path + off, sizeof(path) + off, ",%x", PCI_FUNC(d->devfn));
2390
return g_strdup(path);
2393
static char *pcibus_get_dev_path(DeviceState *dev)
2395
PCIDevice *d = container_of(dev, PCIDevice, qdev);
2398
/* Path format: Domain:00:Slot.Function:Slot.Function....:Slot.Function.
2399
* 00 is added here to make this format compatible with
2400
* domain:Bus:Slot.Func for systems without nested PCI bridges.
2401
* Slot.Function list specifies the slot and function numbers for all
2402
* devices on the path from root to the specific device. */
2403
const char *root_bus_path;
2405
char slot[] = ":SS.F";
2406
int slot_len = sizeof slot - 1 /* For '\0' */;
2411
root_bus_path = pci_root_bus_path(d);
2412
root_bus_len = strlen(root_bus_path);
2414
/* Calculate # of slots on path between device and root. */;
2416
for (t = d; t; t = t->bus->parent_dev) {
2420
path_len = root_bus_len + slot_len * slot_depth;
2422
/* Allocate memory, fill in the terminating null byte. */
2423
path = g_malloc(path_len + 1 /* For '\0' */);
2424
path[path_len] = '\0';
2426
memcpy(path, root_bus_path, root_bus_len);
2428
/* Fill in slot numbers. We walk up from device to root, so need to print
2429
* them in the reverse order, last to first. */
2430
p = path + path_len;
2431
for (t = d; t; t = t->bus->parent_dev) {
2433
s = snprintf(slot, sizeof slot, ":%02x.%x",
2434
PCI_SLOT(t->devfn), PCI_FUNC(t->devfn));
2435
assert(s == slot_len);
2436
memcpy(p, slot, slot_len);
2442
static int pci_qdev_find_recursive(PCIBus *bus,
2443
const char *id, PCIDevice **pdev)
2445
DeviceState *qdev = qdev_find_recursive(&bus->qbus, id);
2450
/* roughly check if given qdev is pci device */
2451
if (object_dynamic_cast(OBJECT(qdev), TYPE_PCI_DEVICE)) {
2452
*pdev = PCI_DEVICE(qdev);
2458
int pci_qdev_find_device(const char *id, PCIDevice **pdev)
2460
PCIHostState *host_bridge;
2463
QLIST_FOREACH(host_bridge, &pci_host_bridges, next) {
2464
int tmp = pci_qdev_find_recursive(host_bridge->bus, id, pdev);
2469
if (tmp != -ENODEV) {
2477
MemoryRegion *pci_address_space(PCIDevice *dev)
2479
return dev->bus->address_space_mem;
2482
MemoryRegion *pci_address_space_io(PCIDevice *dev)
2484
return dev->bus->address_space_io;
2487
static void pci_device_class_init(ObjectClass *klass, void *data)
2489
DeviceClass *k = DEVICE_CLASS(klass);
2490
PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
2492
k->realize = pci_qdev_realize;
2493
k->unrealize = pci_qdev_unrealize;
2494
k->bus_type = TYPE_PCI_BUS;
2495
k->props = pci_props;
2496
pc->realize = pci_default_realize;
2499
AddressSpace *pci_device_iommu_address_space(PCIDevice *dev)
2501
PCIBus *bus = PCI_BUS(dev->bus);
2502
PCIBus *iommu_bus = bus;
2504
while(iommu_bus && !iommu_bus->iommu_fn && iommu_bus->parent_dev) {
2505
iommu_bus = PCI_BUS(iommu_bus->parent_dev->bus);
2507
if (iommu_bus && iommu_bus->iommu_fn) {
2508
return iommu_bus->iommu_fn(bus, iommu_bus->iommu_opaque, dev->devfn);
2510
return &address_space_memory;
2513
void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque)
2516
bus->iommu_opaque = opaque;
2519
static void pci_dev_get_w64(PCIBus *b, PCIDevice *dev, void *opaque)
2521
Range *range = opaque;
2522
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
2523
uint16_t cmd = pci_get_word(dev->config + PCI_COMMAND);
2526
if (!(cmd & PCI_COMMAND_MEMORY)) {
2530
if (pc->is_bridge) {
2531
pcibus_t base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
2532
pcibus_t limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
2534
base = MAX(base, 0x1ULL << 32);
2536
if (limit >= base) {
2538
range_set_bounds(&pref_range, base, limit);
2539
range_extend(range, &pref_range);
2542
for (i = 0; i < PCI_NUM_REGIONS; ++i) {
2543
PCIIORegion *r = &dev->io_regions[i];
2548
(r->type & PCI_BASE_ADDRESS_SPACE_IO) ||
2549
!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64)) {
2553
lob = pci_bar_address(dev, i, r->type, r->size);
2554
upb = lob + r->size - 1;
2555
if (lob == PCI_BAR_UNMAPPED) {
2559
lob = MAX(lob, 0x1ULL << 32);
2562
range_set_bounds(®ion_range, lob, upb);
2563
range_extend(range, ®ion_range);
2568
void pci_bus_get_w64_range(PCIBus *bus, Range *range)
2570
range_make_empty(range);
2571
pci_for_each_device_under_bus(bus, pci_dev_get_w64, range);
2574
static bool pcie_has_upstream_port(PCIDevice *dev)
2576
PCIDevice *parent_dev = pci_bridge_get_device(dev->bus);
2578
/* Device associated with an upstream port.
2579
* As there are several types of these, it's easier to check the
2580
* parent device: upstream ports are always connected to
2581
* root or downstream ports.
2583
return parent_dev &&
2584
pci_is_express(parent_dev) &&
2585
parent_dev->exp.exp_cap &&
2586
(pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_ROOT_PORT ||
2587
pcie_cap_get_type(parent_dev) == PCI_EXP_TYPE_DOWNSTREAM);
2590
PCIDevice *pci_get_function_0(PCIDevice *pci_dev)
2592
if(pcie_has_upstream_port(pci_dev)) {
2593
/* With an upstream PCIe port, we only support 1 device at slot 0 */
2594
return pci_dev->bus->devices[0];
2596
/* Other bus types might support multiple devices at slots 0-31 */
2597
return pci_dev->bus->devices[PCI_DEVFN(PCI_SLOT(pci_dev->devfn), 0)];
2601
MSIMessage pci_get_msi_message(PCIDevice *dev, int vector)
2604
if (msix_enabled(dev)) {
2605
msg = msix_get_message(dev, vector);
2606
} else if (msi_enabled(dev)) {
2607
msg = msi_get_message(dev, vector);
2609
/* Should never happen */
2610
error_report("%s: unknown interrupt type", __func__);
2616
static const TypeInfo pci_device_type_info = {
2617
.name = TYPE_PCI_DEVICE,
2618
.parent = TYPE_DEVICE,
2619
.instance_size = sizeof(PCIDevice),
2621
.class_size = sizeof(PCIDeviceClass),
2622
.class_init = pci_device_class_init,
2625
static void pci_register_types(void)
2627
type_register_static(&pci_bus_info);
2628
type_register_static(&pcie_bus_info);
2629
type_register_static(&pci_device_type_info);
2632
type_init(pci_register_types)