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"
41 # define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
43 # define PCI_DPRINTF(format, ...) do { } while (0)
46 static void pcibus_dev_print(Monitor
*mon
, DeviceState
*dev
, int indent
);
47 static char *pcibus_get_dev_path(DeviceState
*dev
);
48 static char *pcibus_get_fw_dev_path(DeviceState
*dev
);
49 static int pcibus_reset(BusState
*qbus
);
51 static Property pci_props
[] = {
52 DEFINE_PROP_PCI_DEVFN("addr", PCIDevice
, devfn
, -1),
53 DEFINE_PROP_STRING("romfile", PCIDevice
, romfile
),
54 DEFINE_PROP_UINT32("rombar", PCIDevice
, rom_bar
, 1),
55 DEFINE_PROP_BIT("multifunction", PCIDevice
, cap_present
,
56 QEMU_PCI_CAP_MULTIFUNCTION_BITNR
, false),
57 DEFINE_PROP_BIT("command_serr_enable", PCIDevice
, cap_present
,
58 QEMU_PCI_CAP_SERR_BITNR
, true),
59 DEFINE_PROP_END_OF_LIST()
62 static void pci_bus_class_init(ObjectClass
*klass
, void *data
)
64 BusClass
*k
= BUS_CLASS(klass
);
66 k
->print_dev
= pcibus_dev_print
;
67 k
->get_dev_path
= pcibus_get_dev_path
;
68 k
->get_fw_dev_path
= pcibus_get_fw_dev_path
;
69 k
->reset
= pcibus_reset
;
72 static const TypeInfo pci_bus_info
= {
75 .instance_size
= sizeof(PCIBus
),
76 .class_init
= pci_bus_class_init
,
79 static const TypeInfo pcie_bus_info
= {
80 .name
= TYPE_PCIE_BUS
,
81 .parent
= TYPE_PCI_BUS
,
84 static PCIBus
*pci_find_bus_nr(PCIBus
*bus
, int bus_num
);
85 static void pci_update_mappings(PCIDevice
*d
);
86 static void pci_set_irq(void *opaque
, int irq_num
, int level
);
87 static int pci_add_option_rom(PCIDevice
*pdev
, bool is_default_rom
);
88 static void pci_del_option_rom(PCIDevice
*pdev
);
90 static uint16_t pci_default_sub_vendor_id
= PCI_SUBVENDOR_ID_REDHAT_QUMRANET
;
91 static uint16_t pci_default_sub_device_id
= PCI_SUBDEVICE_ID_QEMU
;
93 static QLIST_HEAD(, PCIHostState
) pci_host_bridges
;
95 static const VMStateDescription vmstate_pcibus
= {
98 .minimum_version_id
= 1,
99 .minimum_version_id_old
= 1,
100 .fields
= (VMStateField
[]) {
101 VMSTATE_INT32_EQUAL(nirq
, PCIBus
),
102 VMSTATE_VARRAY_INT32(irq_count
, PCIBus
, nirq
, 0, vmstate_info_int32
, int32_t),
103 VMSTATE_END_OF_LIST()
106 static int pci_bar(PCIDevice
*d
, int reg
)
110 if (reg
!= PCI_ROM_SLOT
)
111 return PCI_BASE_ADDRESS_0
+ reg
* 4;
113 type
= d
->config
[PCI_HEADER_TYPE
] & ~PCI_HEADER_TYPE_MULTI_FUNCTION
;
114 return type
== PCI_HEADER_TYPE_BRIDGE
? PCI_ROM_ADDRESS1
: PCI_ROM_ADDRESS
;
117 static inline int pci_irq_state(PCIDevice
*d
, int irq_num
)
119 return (d
->irq_state
>> irq_num
) & 0x1;
122 static inline void pci_set_irq_state(PCIDevice
*d
, int irq_num
, int level
)
124 d
->irq_state
&= ~(0x1 << irq_num
);
125 d
->irq_state
|= level
<< irq_num
;
128 static void pci_change_irq_level(PCIDevice
*pci_dev
, int irq_num
, int change
)
133 irq_num
= bus
->map_irq(pci_dev
, irq_num
);
136 pci_dev
= bus
->parent_dev
;
138 bus
->irq_count
[irq_num
] += change
;
139 bus
->set_irq(bus
->irq_opaque
, irq_num
, bus
->irq_count
[irq_num
] != 0);
142 int pci_bus_get_irq_level(PCIBus
*bus
, int irq_num
)
144 assert(irq_num
>= 0);
145 assert(irq_num
< bus
->nirq
);
146 return !!bus
->irq_count
[irq_num
];
149 /* Update interrupt status bit in config space on interrupt
151 static void pci_update_irq_status(PCIDevice
*dev
)
153 if (dev
->irq_state
) {
154 dev
->config
[PCI_STATUS
] |= PCI_STATUS_INTERRUPT
;
156 dev
->config
[PCI_STATUS
] &= ~PCI_STATUS_INTERRUPT
;
160 void pci_device_deassert_intx(PCIDevice
*dev
)
163 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
164 qemu_set_irq(dev
->irq
[i
], 0);
169 * This function is called on #RST and FLR.
170 * FLR if PCI_EXP_DEVCTL_BCR_FLR is set
172 void pci_device_reset(PCIDevice
*dev
)
176 qdev_reset_all(&dev
->qdev
);
179 pci_update_irq_status(dev
);
180 pci_device_deassert_intx(dev
);
181 /* Clear all writable bits */
182 pci_word_test_and_clear_mask(dev
->config
+ PCI_COMMAND
,
183 pci_get_word(dev
->wmask
+ PCI_COMMAND
) |
184 pci_get_word(dev
->w1cmask
+ PCI_COMMAND
));
185 pci_word_test_and_clear_mask(dev
->config
+ PCI_STATUS
,
186 pci_get_word(dev
->wmask
+ PCI_STATUS
) |
187 pci_get_word(dev
->w1cmask
+ PCI_STATUS
));
188 dev
->config
[PCI_CACHE_LINE_SIZE
] = 0x0;
189 dev
->config
[PCI_INTERRUPT_LINE
] = 0x0;
190 for (r
= 0; r
< PCI_NUM_REGIONS
; ++r
) {
191 PCIIORegion
*region
= &dev
->io_regions
[r
];
196 if (!(region
->type
& PCI_BASE_ADDRESS_SPACE_IO
) &&
197 region
->type
& PCI_BASE_ADDRESS_MEM_TYPE_64
) {
198 pci_set_quad(dev
->config
+ pci_bar(dev
, r
), region
->type
);
200 pci_set_long(dev
->config
+ pci_bar(dev
, r
), region
->type
);
203 pci_update_mappings(dev
);
210 * Trigger pci bus reset under a given bus.
211 * To be called on RST# assert.
213 void pci_bus_reset(PCIBus
*bus
)
217 for (i
= 0; i
< bus
->nirq
; i
++) {
218 bus
->irq_count
[i
] = 0;
220 for (i
= 0; i
< ARRAY_SIZE(bus
->devices
); ++i
) {
221 if (bus
->devices
[i
]) {
222 pci_device_reset(bus
->devices
[i
]);
227 static int pcibus_reset(BusState
*qbus
)
229 pci_bus_reset(DO_UPCAST(PCIBus
, qbus
, qbus
));
231 /* topology traverse is done by pci_bus_reset().
232 Tell qbus/qdev walker not to traverse the tree */
236 static void pci_host_bus_register(PCIBus
*bus
, DeviceState
*parent
)
238 PCIHostState
*host_bridge
= PCI_HOST_BRIDGE(parent
);
240 QLIST_INSERT_HEAD(&pci_host_bridges
, host_bridge
, next
);
243 PCIBus
*pci_find_primary_bus(void)
245 PCIBus
*primary_bus
= NULL
;
248 QLIST_FOREACH(host
, &pci_host_bridges
, next
) {
250 /* We have multiple root buses, refuse to select a primary */
253 primary_bus
= host
->bus
;
259 PCIBus
*pci_device_root_bus(const PCIDevice
*d
)
261 PCIBus
*bus
= d
->bus
;
263 while ((d
= bus
->parent_dev
) != NULL
) {
270 const char *pci_root_bus_path(PCIDevice
*dev
)
272 PCIBus
*rootbus
= pci_device_root_bus(dev
);
273 PCIHostState
*host_bridge
= PCI_HOST_BRIDGE(rootbus
->qbus
.parent
);
274 PCIHostBridgeClass
*hc
= PCI_HOST_BRIDGE_GET_CLASS(host_bridge
);
276 assert(!rootbus
->parent_dev
);
277 assert(host_bridge
->bus
== rootbus
);
279 if (hc
->root_bus_path
) {
280 return (*hc
->root_bus_path
)(host_bridge
, rootbus
);
283 return rootbus
->qbus
.name
;
286 static void pci_bus_init(PCIBus
*bus
, DeviceState
*parent
,
288 MemoryRegion
*address_space_mem
,
289 MemoryRegion
*address_space_io
,
292 assert(PCI_FUNC(devfn_min
) == 0);
293 bus
->devfn_min
= devfn_min
;
294 bus
->address_space_mem
= address_space_mem
;
295 bus
->address_space_io
= address_space_io
;
298 QLIST_INIT(&bus
->child
);
300 pci_host_bus_register(bus
, parent
);
302 vmstate_register(NULL
, -1, &vmstate_pcibus
, bus
);
305 bool pci_bus_is_express(PCIBus
*bus
)
307 return object_dynamic_cast(OBJECT(bus
), TYPE_PCIE_BUS
);
310 bool pci_bus_is_root(PCIBus
*bus
)
312 return !bus
->parent_dev
;
315 void pci_bus_new_inplace(PCIBus
*bus
, DeviceState
*parent
,
317 MemoryRegion
*address_space_mem
,
318 MemoryRegion
*address_space_io
,
319 uint8_t devfn_min
, const char *typename
)
321 qbus_create_inplace(bus
, typename
, parent
, name
);
322 pci_bus_init(bus
, parent
, name
, address_space_mem
,
323 address_space_io
, devfn_min
);
326 PCIBus
*pci_bus_new(DeviceState
*parent
, const char *name
,
327 MemoryRegion
*address_space_mem
,
328 MemoryRegion
*address_space_io
,
329 uint8_t devfn_min
, const char *typename
)
333 bus
= PCI_BUS(qbus_create(typename
, parent
, name
));
334 pci_bus_init(bus
, parent
, name
, address_space_mem
,
335 address_space_io
, devfn_min
);
339 void pci_bus_irqs(PCIBus
*bus
, pci_set_irq_fn set_irq
, pci_map_irq_fn map_irq
,
340 void *irq_opaque
, int nirq
)
342 bus
->set_irq
= set_irq
;
343 bus
->map_irq
= map_irq
;
344 bus
->irq_opaque
= irq_opaque
;
346 bus
->irq_count
= g_malloc0(nirq
* sizeof(bus
->irq_count
[0]));
349 void pci_bus_hotplug(PCIBus
*bus
, pci_hotplug_fn hotplug
, DeviceState
*qdev
)
351 bus
->qbus
.allow_hotplug
= 1;
352 bus
->hotplug
= hotplug
;
353 bus
->hotplug_qdev
= qdev
;
356 PCIBus
*pci_register_bus(DeviceState
*parent
, const char *name
,
357 pci_set_irq_fn set_irq
, pci_map_irq_fn map_irq
,
359 MemoryRegion
*address_space_mem
,
360 MemoryRegion
*address_space_io
,
361 uint8_t devfn_min
, int nirq
, const char *typename
)
365 bus
= pci_bus_new(parent
, name
, address_space_mem
,
366 address_space_io
, devfn_min
, typename
);
367 pci_bus_irqs(bus
, set_irq
, map_irq
, irq_opaque
, nirq
);
371 int pci_bus_num(PCIBus
*s
)
373 if (pci_bus_is_root(s
))
374 return 0; /* pci host bridge */
375 return s
->parent_dev
->config
[PCI_SECONDARY_BUS
];
378 static int get_pci_config_device(QEMUFile
*f
, void *pv
, size_t size
)
380 PCIDevice
*s
= container_of(pv
, PCIDevice
, config
);
384 assert(size
== pci_config_size(s
));
385 config
= g_malloc(size
);
387 qemu_get_buffer(f
, config
, size
);
388 for (i
= 0; i
< size
; ++i
) {
389 if ((config
[i
] ^ s
->config
[i
]) &
390 s
->cmask
[i
] & ~s
->wmask
[i
] & ~s
->w1cmask
[i
]) {
395 memcpy(s
->config
, config
, size
);
397 pci_update_mappings(s
);
399 memory_region_set_enabled(&s
->bus_master_enable_region
,
400 pci_get_word(s
->config
+ PCI_COMMAND
)
401 & PCI_COMMAND_MASTER
);
407 /* just put buffer */
408 static void put_pci_config_device(QEMUFile
*f
, void *pv
, size_t size
)
410 const uint8_t **v
= pv
;
411 assert(size
== pci_config_size(container_of(pv
, PCIDevice
, config
)));
412 qemu_put_buffer(f
, *v
, size
);
415 static VMStateInfo vmstate_info_pci_config
= {
416 .name
= "pci config",
417 .get
= get_pci_config_device
,
418 .put
= put_pci_config_device
,
421 static int get_pci_irq_state(QEMUFile
*f
, void *pv
, size_t size
)
423 PCIDevice
*s
= container_of(pv
, PCIDevice
, irq_state
);
424 uint32_t irq_state
[PCI_NUM_PINS
];
426 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
427 irq_state
[i
] = qemu_get_be32(f
);
428 if (irq_state
[i
] != 0x1 && irq_state
[i
] != 0) {
429 fprintf(stderr
, "irq state %d: must be 0 or 1.\n",
435 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
436 pci_set_irq_state(s
, i
, irq_state
[i
]);
442 static void put_pci_irq_state(QEMUFile
*f
, void *pv
, size_t size
)
445 PCIDevice
*s
= container_of(pv
, PCIDevice
, irq_state
);
447 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
448 qemu_put_be32(f
, pci_irq_state(s
, i
));
452 static VMStateInfo vmstate_info_pci_irq_state
= {
453 .name
= "pci irq state",
454 .get
= get_pci_irq_state
,
455 .put
= put_pci_irq_state
,
458 const VMStateDescription vmstate_pci_device
= {
461 .minimum_version_id
= 1,
462 .minimum_version_id_old
= 1,
463 .fields
= (VMStateField
[]) {
464 VMSTATE_INT32_LE(version_id
, PCIDevice
),
465 VMSTATE_BUFFER_UNSAFE_INFO(config
, PCIDevice
, 0,
466 vmstate_info_pci_config
,
467 PCI_CONFIG_SPACE_SIZE
),
468 VMSTATE_BUFFER_UNSAFE_INFO(irq_state
, PCIDevice
, 2,
469 vmstate_info_pci_irq_state
,
470 PCI_NUM_PINS
* sizeof(int32_t)),
471 VMSTATE_END_OF_LIST()
475 const VMStateDescription vmstate_pcie_device
= {
476 .name
= "PCIEDevice",
478 .minimum_version_id
= 1,
479 .minimum_version_id_old
= 1,
480 .fields
= (VMStateField
[]) {
481 VMSTATE_INT32_LE(version_id
, PCIDevice
),
482 VMSTATE_BUFFER_UNSAFE_INFO(config
, PCIDevice
, 0,
483 vmstate_info_pci_config
,
484 PCIE_CONFIG_SPACE_SIZE
),
485 VMSTATE_BUFFER_UNSAFE_INFO(irq_state
, PCIDevice
, 2,
486 vmstate_info_pci_irq_state
,
487 PCI_NUM_PINS
* sizeof(int32_t)),
488 VMSTATE_END_OF_LIST()
492 static inline const VMStateDescription
*pci_get_vmstate(PCIDevice
*s
)
494 return pci_is_express(s
) ? &vmstate_pcie_device
: &vmstate_pci_device
;
497 void pci_device_save(PCIDevice
*s
, QEMUFile
*f
)
499 /* Clear interrupt status bit: it is implicit
500 * in irq_state which we are saving.
501 * This makes us compatible with old devices
502 * which never set or clear this bit. */
503 s
->config
[PCI_STATUS
] &= ~PCI_STATUS_INTERRUPT
;
504 vmstate_save_state(f
, pci_get_vmstate(s
), s
);
505 /* Restore the interrupt status bit. */
506 pci_update_irq_status(s
);
509 int pci_device_load(PCIDevice
*s
, QEMUFile
*f
)
512 ret
= vmstate_load_state(f
, pci_get_vmstate(s
), s
, s
->version_id
);
513 /* Restore the interrupt status bit. */
514 pci_update_irq_status(s
);
518 static void pci_set_default_subsystem_id(PCIDevice
*pci_dev
)
520 pci_set_word(pci_dev
->config
+ PCI_SUBSYSTEM_VENDOR_ID
,
521 pci_default_sub_vendor_id
);
522 pci_set_word(pci_dev
->config
+ PCI_SUBSYSTEM_ID
,
523 pci_default_sub_device_id
);
527 * Parse [[<domain>:]<bus>:]<slot>, return -1 on error if funcp == NULL
528 * [[<domain>:]<bus>:]<slot>.<func>, return -1 on error
530 int pci_parse_devaddr(const char *addr
, int *domp
, int *busp
,
531 unsigned int *slotp
, unsigned int *funcp
)
536 unsigned long dom
= 0, bus
= 0;
537 unsigned int slot
= 0;
538 unsigned int func
= 0;
541 val
= strtoul(p
, &e
, 16);
547 val
= strtoul(p
, &e
, 16);
554 val
= strtoul(p
, &e
, 16);
567 val
= strtoul(p
, &e
, 16);
574 /* if funcp == NULL func is 0 */
575 if (dom
> 0xffff || bus
> 0xff || slot
> 0x1f || func
> 7)
589 PCIBus
*pci_get_bus_devfn(int *devfnp
, PCIBus
*root
, const char *devaddr
)
594 assert(!root
->parent_dev
);
597 fprintf(stderr
, "No primary PCI bus\n");
603 return pci_find_bus_nr(root
, 0);
606 if (pci_parse_devaddr(devaddr
, &dom
, &bus
, &slot
, NULL
) < 0) {
611 fprintf(stderr
, "No support for non-zero PCI domains\n");
615 *devfnp
= PCI_DEVFN(slot
, 0);
616 return pci_find_bus_nr(root
, bus
);
619 static void pci_init_cmask(PCIDevice
*dev
)
621 pci_set_word(dev
->cmask
+ PCI_VENDOR_ID
, 0xffff);
622 pci_set_word(dev
->cmask
+ PCI_DEVICE_ID
, 0xffff);
623 dev
->cmask
[PCI_STATUS
] = PCI_STATUS_CAP_LIST
;
624 dev
->cmask
[PCI_REVISION_ID
] = 0xff;
625 dev
->cmask
[PCI_CLASS_PROG
] = 0xff;
626 pci_set_word(dev
->cmask
+ PCI_CLASS_DEVICE
, 0xffff);
627 dev
->cmask
[PCI_HEADER_TYPE
] = 0xff;
628 dev
->cmask
[PCI_CAPABILITY_LIST
] = 0xff;
631 static void pci_init_wmask(PCIDevice
*dev
)
633 int config_size
= pci_config_size(dev
);
635 dev
->wmask
[PCI_CACHE_LINE_SIZE
] = 0xff;
636 dev
->wmask
[PCI_INTERRUPT_LINE
] = 0xff;
637 pci_set_word(dev
->wmask
+ PCI_COMMAND
,
638 PCI_COMMAND_IO
| PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
|
639 PCI_COMMAND_INTX_DISABLE
);
640 if (dev
->cap_present
& QEMU_PCI_CAP_SERR
) {
641 pci_word_test_and_set_mask(dev
->wmask
+ PCI_COMMAND
, PCI_COMMAND_SERR
);
644 memset(dev
->wmask
+ PCI_CONFIG_HEADER_SIZE
, 0xff,
645 config_size
- PCI_CONFIG_HEADER_SIZE
);
648 static void pci_init_w1cmask(PCIDevice
*dev
)
651 * Note: It's okay to set w1cmask even for readonly bits as
652 * long as their value is hardwired to 0.
654 pci_set_word(dev
->w1cmask
+ PCI_STATUS
,
655 PCI_STATUS_PARITY
| PCI_STATUS_SIG_TARGET_ABORT
|
656 PCI_STATUS_REC_TARGET_ABORT
| PCI_STATUS_REC_MASTER_ABORT
|
657 PCI_STATUS_SIG_SYSTEM_ERROR
| PCI_STATUS_DETECTED_PARITY
);
660 static void pci_init_mask_bridge(PCIDevice
*d
)
662 /* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
663 PCI_SEC_LETENCY_TIMER */
664 memset(d
->wmask
+ PCI_PRIMARY_BUS
, 0xff, 4);
667 d
->wmask
[PCI_IO_BASE
] = PCI_IO_RANGE_MASK
& 0xff;
668 d
->wmask
[PCI_IO_LIMIT
] = PCI_IO_RANGE_MASK
& 0xff;
669 pci_set_word(d
->wmask
+ PCI_MEMORY_BASE
,
670 PCI_MEMORY_RANGE_MASK
& 0xffff);
671 pci_set_word(d
->wmask
+ PCI_MEMORY_LIMIT
,
672 PCI_MEMORY_RANGE_MASK
& 0xffff);
673 pci_set_word(d
->wmask
+ PCI_PREF_MEMORY_BASE
,
674 PCI_PREF_RANGE_MASK
& 0xffff);
675 pci_set_word(d
->wmask
+ PCI_PREF_MEMORY_LIMIT
,
676 PCI_PREF_RANGE_MASK
& 0xffff);
678 /* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
679 memset(d
->wmask
+ PCI_PREF_BASE_UPPER32
, 0xff, 8);
681 /* Supported memory and i/o types */
682 d
->config
[PCI_IO_BASE
] |= PCI_IO_RANGE_TYPE_16
;
683 d
->config
[PCI_IO_LIMIT
] |= PCI_IO_RANGE_TYPE_16
;
684 pci_word_test_and_set_mask(d
->config
+ PCI_PREF_MEMORY_BASE
,
685 PCI_PREF_RANGE_TYPE_64
);
686 pci_word_test_and_set_mask(d
->config
+ PCI_PREF_MEMORY_LIMIT
,
687 PCI_PREF_RANGE_TYPE_64
);
690 * TODO: Bridges default to 10-bit VGA decoding but we currently only
691 * implement 16-bit decoding (no alias support).
693 pci_set_word(d
->wmask
+ PCI_BRIDGE_CONTROL
,
694 PCI_BRIDGE_CTL_PARITY
|
695 PCI_BRIDGE_CTL_SERR
|
698 PCI_BRIDGE_CTL_VGA_16BIT
|
699 PCI_BRIDGE_CTL_MASTER_ABORT
|
700 PCI_BRIDGE_CTL_BUS_RESET
|
701 PCI_BRIDGE_CTL_FAST_BACK
|
702 PCI_BRIDGE_CTL_DISCARD
|
703 PCI_BRIDGE_CTL_SEC_DISCARD
|
704 PCI_BRIDGE_CTL_DISCARD_SERR
);
705 /* Below does not do anything as we never set this bit, put here for
707 pci_set_word(d
->w1cmask
+ PCI_BRIDGE_CONTROL
,
708 PCI_BRIDGE_CTL_DISCARD_STATUS
);
709 d
->cmask
[PCI_IO_BASE
] |= PCI_IO_RANGE_TYPE_MASK
;
710 d
->cmask
[PCI_IO_LIMIT
] |= PCI_IO_RANGE_TYPE_MASK
;
711 pci_word_test_and_set_mask(d
->cmask
+ PCI_PREF_MEMORY_BASE
,
712 PCI_PREF_RANGE_TYPE_MASK
);
713 pci_word_test_and_set_mask(d
->cmask
+ PCI_PREF_MEMORY_LIMIT
,
714 PCI_PREF_RANGE_TYPE_MASK
);
717 static int pci_init_multifunction(PCIBus
*bus
, PCIDevice
*dev
)
719 uint8_t slot
= PCI_SLOT(dev
->devfn
);
722 if (dev
->cap_present
& QEMU_PCI_CAP_MULTIFUNCTION
) {
723 dev
->config
[PCI_HEADER_TYPE
] |= PCI_HEADER_TYPE_MULTI_FUNCTION
;
727 * multifunction bit is interpreted in two ways as follows.
728 * - all functions must set the bit to 1.
730 * - function 0 must set the bit, but the rest function (> 0)
731 * is allowed to leave the bit to 0.
732 * Example: PIIX3(also in qemu), PIIX4(also in qemu), ICH10,
734 * So OS (at least Linux) checks the bit of only function 0,
735 * and doesn't see the bit of function > 0.
737 * The below check allows both interpretation.
739 if (PCI_FUNC(dev
->devfn
)) {
740 PCIDevice
*f0
= bus
->devices
[PCI_DEVFN(slot
, 0)];
741 if (f0
&& !(f0
->cap_present
& QEMU_PCI_CAP_MULTIFUNCTION
)) {
742 /* function 0 should set multifunction bit */
743 error_report("PCI: single function device can't be populated "
744 "in function %x.%x", slot
, PCI_FUNC(dev
->devfn
));
750 if (dev
->cap_present
& QEMU_PCI_CAP_MULTIFUNCTION
) {
753 /* function 0 indicates single function, so function > 0 must be NULL */
754 for (func
= 1; func
< PCI_FUNC_MAX
; ++func
) {
755 if (bus
->devices
[PCI_DEVFN(slot
, func
)]) {
756 error_report("PCI: %x.0 indicates single function, "
757 "but %x.%x is already populated.",
765 static void pci_config_alloc(PCIDevice
*pci_dev
)
767 int config_size
= pci_config_size(pci_dev
);
769 pci_dev
->config
= g_malloc0(config_size
);
770 pci_dev
->cmask
= g_malloc0(config_size
);
771 pci_dev
->wmask
= g_malloc0(config_size
);
772 pci_dev
->w1cmask
= g_malloc0(config_size
);
773 pci_dev
->used
= g_malloc0(config_size
);
776 static void pci_config_free(PCIDevice
*pci_dev
)
778 g_free(pci_dev
->config
);
779 g_free(pci_dev
->cmask
);
780 g_free(pci_dev
->wmask
);
781 g_free(pci_dev
->w1cmask
);
782 g_free(pci_dev
->used
);
785 /* -1 for devfn means auto assign */
786 static PCIDevice
*do_pci_register_device(PCIDevice
*pci_dev
, PCIBus
*bus
,
787 const char *name
, int devfn
)
789 PCIDeviceClass
*pc
= PCI_DEVICE_GET_CLASS(pci_dev
);
790 PCIConfigReadFunc
*config_read
= pc
->config_read
;
791 PCIConfigWriteFunc
*config_write
= pc
->config_write
;
792 AddressSpace
*dma_as
;
795 for(devfn
= bus
->devfn_min
; devfn
< ARRAY_SIZE(bus
->devices
);
796 devfn
+= PCI_FUNC_MAX
) {
797 if (!bus
->devices
[devfn
])
800 error_report("PCI: no slot/function available for %s, all in use", name
);
803 } else if (bus
->devices
[devfn
]) {
804 error_report("PCI: slot %d function %d not available for %s, in use by %s",
805 PCI_SLOT(devfn
), PCI_FUNC(devfn
), name
, bus
->devices
[devfn
]->name
);
811 dma_as
= bus
->iommu_fn(bus
, bus
->iommu_opaque
, devfn
);
813 /* FIXME: inherit memory region from bus creator */
814 dma_as
= &address_space_memory
;
817 memory_region_init_alias(&pci_dev
->bus_master_enable_region
,
818 OBJECT(pci_dev
), "bus master",
819 dma_as
->root
, 0, memory_region_size(dma_as
->root
));
820 memory_region_set_enabled(&pci_dev
->bus_master_enable_region
, false);
821 address_space_init(&pci_dev
->bus_master_as
, &pci_dev
->bus_master_enable_region
,
824 pci_dev
->devfn
= devfn
;
825 pstrcpy(pci_dev
->name
, sizeof(pci_dev
->name
), name
);
826 pci_dev
->irq_state
= 0;
827 pci_config_alloc(pci_dev
);
829 pci_config_set_vendor_id(pci_dev
->config
, pc
->vendor_id
);
830 pci_config_set_device_id(pci_dev
->config
, pc
->device_id
);
831 pci_config_set_revision(pci_dev
->config
, pc
->revision
);
832 pci_config_set_class(pci_dev
->config
, pc
->class_id
);
834 if (!pc
->is_bridge
) {
835 if (pc
->subsystem_vendor_id
|| pc
->subsystem_id
) {
836 pci_set_word(pci_dev
->config
+ PCI_SUBSYSTEM_VENDOR_ID
,
837 pc
->subsystem_vendor_id
);
838 pci_set_word(pci_dev
->config
+ PCI_SUBSYSTEM_ID
,
841 pci_set_default_subsystem_id(pci_dev
);
844 /* subsystem_vendor_id/subsystem_id are only for header type 0 */
845 assert(!pc
->subsystem_vendor_id
);
846 assert(!pc
->subsystem_id
);
848 pci_init_cmask(pci_dev
);
849 pci_init_wmask(pci_dev
);
850 pci_init_w1cmask(pci_dev
);
852 pci_init_mask_bridge(pci_dev
);
854 if (pci_init_multifunction(bus
, pci_dev
)) {
855 pci_config_free(pci_dev
);
860 config_read
= pci_default_read_config
;
862 config_write
= pci_default_write_config
;
863 pci_dev
->config_read
= config_read
;
864 pci_dev
->config_write
= config_write
;
865 bus
->devices
[devfn
] = pci_dev
;
866 pci_dev
->irq
= qemu_allocate_irqs(pci_set_irq
, pci_dev
, PCI_NUM_PINS
);
867 pci_dev
->version_id
= 2; /* Current pci device vmstate version */
871 static void do_pci_unregister_device(PCIDevice
*pci_dev
)
873 qemu_free_irqs(pci_dev
->irq
);
874 pci_dev
->bus
->devices
[pci_dev
->devfn
] = NULL
;
875 pci_config_free(pci_dev
);
877 address_space_destroy(&pci_dev
->bus_master_as
);
878 memory_region_destroy(&pci_dev
->bus_master_enable_region
);
881 static void pci_unregister_io_regions(PCIDevice
*pci_dev
)
886 for(i
= 0; i
< PCI_NUM_REGIONS
; i
++) {
887 r
= &pci_dev
->io_regions
[i
];
888 if (!r
->size
|| r
->addr
== PCI_BAR_UNMAPPED
)
890 memory_region_del_subregion(r
->address_space
, r
->memory
);
893 pci_unregister_vga(pci_dev
);
896 static int pci_unregister_device(DeviceState
*dev
)
898 PCIDevice
*pci_dev
= PCI_DEVICE(dev
);
899 PCIDeviceClass
*pc
= PCI_DEVICE_GET_CLASS(pci_dev
);
901 pci_unregister_io_regions(pci_dev
);
902 pci_del_option_rom(pci_dev
);
908 do_pci_unregister_device(pci_dev
);
912 void pci_register_bar(PCIDevice
*pci_dev
, int region_num
,
913 uint8_t type
, MemoryRegion
*memory
)
918 pcibus_t size
= memory_region_size(memory
);
920 assert(region_num
>= 0);
921 assert(region_num
< PCI_NUM_REGIONS
);
922 if (size
& (size
-1)) {
923 fprintf(stderr
, "ERROR: PCI region size must be pow2 "
924 "type=0x%x, size=0x%"FMT_PCIBUS
"\n", type
, size
);
928 r
= &pci_dev
->io_regions
[region_num
];
929 r
->addr
= PCI_BAR_UNMAPPED
;
935 addr
= pci_bar(pci_dev
, region_num
);
936 if (region_num
== PCI_ROM_SLOT
) {
937 /* ROM enable bit is writable */
938 wmask
|= PCI_ROM_ADDRESS_ENABLE
;
940 pci_set_long(pci_dev
->config
+ addr
, type
);
941 if (!(r
->type
& PCI_BASE_ADDRESS_SPACE_IO
) &&
942 r
->type
& PCI_BASE_ADDRESS_MEM_TYPE_64
) {
943 pci_set_quad(pci_dev
->wmask
+ addr
, wmask
);
944 pci_set_quad(pci_dev
->cmask
+ addr
, ~0ULL);
946 pci_set_long(pci_dev
->wmask
+ addr
, wmask
& 0xffffffff);
947 pci_set_long(pci_dev
->cmask
+ addr
, 0xffffffff);
949 pci_dev
->io_regions
[region_num
].memory
= memory
;
950 pci_dev
->io_regions
[region_num
].address_space
951 = type
& PCI_BASE_ADDRESS_SPACE_IO
952 ? pci_dev
->bus
->address_space_io
953 : pci_dev
->bus
->address_space_mem
;
956 static void pci_update_vga(PCIDevice
*pci_dev
)
960 if (!pci_dev
->has_vga
) {
964 cmd
= pci_get_word(pci_dev
->config
+ PCI_COMMAND
);
966 memory_region_set_enabled(pci_dev
->vga_regions
[QEMU_PCI_VGA_MEM
],
967 cmd
& PCI_COMMAND_MEMORY
);
968 memory_region_set_enabled(pci_dev
->vga_regions
[QEMU_PCI_VGA_IO_LO
],
969 cmd
& PCI_COMMAND_IO
);
970 memory_region_set_enabled(pci_dev
->vga_regions
[QEMU_PCI_VGA_IO_HI
],
971 cmd
& PCI_COMMAND_IO
);
974 void pci_register_vga(PCIDevice
*pci_dev
, MemoryRegion
*mem
,
975 MemoryRegion
*io_lo
, MemoryRegion
*io_hi
)
977 assert(!pci_dev
->has_vga
);
979 assert(memory_region_size(mem
) == QEMU_PCI_VGA_MEM_SIZE
);
980 pci_dev
->vga_regions
[QEMU_PCI_VGA_MEM
] = mem
;
981 memory_region_add_subregion_overlap(pci_dev
->bus
->address_space_mem
,
982 QEMU_PCI_VGA_MEM_BASE
, mem
, 1);
984 assert(memory_region_size(io_lo
) == QEMU_PCI_VGA_IO_LO_SIZE
);
985 pci_dev
->vga_regions
[QEMU_PCI_VGA_IO_LO
] = io_lo
;
986 memory_region_add_subregion_overlap(pci_dev
->bus
->address_space_io
,
987 QEMU_PCI_VGA_IO_LO_BASE
, io_lo
, 1);
989 assert(memory_region_size(io_hi
) == QEMU_PCI_VGA_IO_HI_SIZE
);
990 pci_dev
->vga_regions
[QEMU_PCI_VGA_IO_HI
] = io_hi
;
991 memory_region_add_subregion_overlap(pci_dev
->bus
->address_space_io
,
992 QEMU_PCI_VGA_IO_HI_BASE
, io_hi
, 1);
993 pci_dev
->has_vga
= true;
995 pci_update_vga(pci_dev
);
998 void pci_unregister_vga(PCIDevice
*pci_dev
)
1000 if (!pci_dev
->has_vga
) {
1004 memory_region_del_subregion(pci_dev
->bus
->address_space_mem
,
1005 pci_dev
->vga_regions
[QEMU_PCI_VGA_MEM
]);
1006 memory_region_del_subregion(pci_dev
->bus
->address_space_io
,
1007 pci_dev
->vga_regions
[QEMU_PCI_VGA_IO_LO
]);
1008 memory_region_del_subregion(pci_dev
->bus
->address_space_io
,
1009 pci_dev
->vga_regions
[QEMU_PCI_VGA_IO_HI
]);
1010 pci_dev
->has_vga
= false;
1013 pcibus_t
pci_get_bar_addr(PCIDevice
*pci_dev
, int region_num
)
1015 return pci_dev
->io_regions
[region_num
].addr
;
1018 static pcibus_t
pci_bar_address(PCIDevice
*d
,
1019 int reg
, uint8_t type
, pcibus_t size
)
1021 pcibus_t new_addr
, last_addr
;
1022 int bar
= pci_bar(d
, reg
);
1023 uint16_t cmd
= pci_get_word(d
->config
+ PCI_COMMAND
);
1025 if (type
& PCI_BASE_ADDRESS_SPACE_IO
) {
1026 if (!(cmd
& PCI_COMMAND_IO
)) {
1027 return PCI_BAR_UNMAPPED
;
1029 new_addr
= pci_get_long(d
->config
+ bar
) & ~(size
- 1);
1030 last_addr
= new_addr
+ size
- 1;
1031 /* NOTE: we have only 64K ioports on PC */
1032 if (last_addr
<= new_addr
|| new_addr
== 0 || last_addr
> UINT16_MAX
) {
1033 return PCI_BAR_UNMAPPED
;
1038 if (!(cmd
& PCI_COMMAND_MEMORY
)) {
1039 return PCI_BAR_UNMAPPED
;
1041 if (type
& PCI_BASE_ADDRESS_MEM_TYPE_64
) {
1042 new_addr
= pci_get_quad(d
->config
+ bar
);
1044 new_addr
= pci_get_long(d
->config
+ bar
);
1046 /* the ROM slot has a specific enable bit */
1047 if (reg
== PCI_ROM_SLOT
&& !(new_addr
& PCI_ROM_ADDRESS_ENABLE
)) {
1048 return PCI_BAR_UNMAPPED
;
1050 new_addr
&= ~(size
- 1);
1051 last_addr
= new_addr
+ size
- 1;
1052 /* NOTE: we do not support wrapping */
1053 /* XXX: as we cannot support really dynamic
1054 mappings, we handle specific values as invalid
1056 if (last_addr
<= new_addr
|| new_addr
== 0 ||
1057 last_addr
== PCI_BAR_UNMAPPED
) {
1058 return PCI_BAR_UNMAPPED
;
1061 /* Now pcibus_t is 64bit.
1062 * Check if 32 bit BAR wraps around explicitly.
1063 * Without this, PC ide doesn't work well.
1064 * TODO: remove this work around.
1066 if (!(type
& PCI_BASE_ADDRESS_MEM_TYPE_64
) && last_addr
>= UINT32_MAX
) {
1067 return PCI_BAR_UNMAPPED
;
1071 * OS is allowed to set BAR beyond its addressable
1072 * bits. For example, 32 bit OS can set 64bit bar
1073 * to >4G. Check it. TODO: we might need to support
1074 * it in the future for e.g. PAE.
1076 if (last_addr
>= HWADDR_MAX
) {
1077 return PCI_BAR_UNMAPPED
;
1083 static void pci_update_mappings(PCIDevice
*d
)
1089 for(i
= 0; i
< PCI_NUM_REGIONS
; i
++) {
1090 r
= &d
->io_regions
[i
];
1092 /* this region isn't registered */
1096 new_addr
= pci_bar_address(d
, i
, r
->type
, r
->size
);
1098 /* This bar isn't changed */
1099 if (new_addr
== r
->addr
)
1102 /* now do the real mapping */
1103 if (r
->addr
!= PCI_BAR_UNMAPPED
) {
1104 memory_region_del_subregion(r
->address_space
, r
->memory
);
1107 if (r
->addr
!= PCI_BAR_UNMAPPED
) {
1108 memory_region_add_subregion_overlap(r
->address_space
,
1109 r
->addr
, r
->memory
, 1);
1116 static inline int pci_irq_disabled(PCIDevice
*d
)
1118 return pci_get_word(d
->config
+ PCI_COMMAND
) & PCI_COMMAND_INTX_DISABLE
;
1121 /* Called after interrupt disabled field update in config space,
1122 * assert/deassert interrupts if necessary.
1123 * Gets original interrupt disable bit value (before update). */
1124 static void pci_update_irq_disabled(PCIDevice
*d
, int was_irq_disabled
)
1126 int i
, disabled
= pci_irq_disabled(d
);
1127 if (disabled
== was_irq_disabled
)
1129 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
1130 int state
= pci_irq_state(d
, i
);
1131 pci_change_irq_level(d
, i
, disabled
? -state
: state
);
1135 uint32_t pci_default_read_config(PCIDevice
*d
,
1136 uint32_t address
, int len
)
1140 memcpy(&val
, d
->config
+ address
, len
);
1141 return le32_to_cpu(val
);
1144 void pci_default_write_config(PCIDevice
*d
, uint32_t addr
, uint32_t val
, int l
)
1146 int i
, was_irq_disabled
= pci_irq_disabled(d
);
1148 for (i
= 0; i
< l
; val
>>= 8, ++i
) {
1149 uint8_t wmask
= d
->wmask
[addr
+ i
];
1150 uint8_t w1cmask
= d
->w1cmask
[addr
+ i
];
1151 assert(!(wmask
& w1cmask
));
1152 d
->config
[addr
+ i
] = (d
->config
[addr
+ i
] & ~wmask
) | (val
& wmask
);
1153 d
->config
[addr
+ i
] &= ~(val
& w1cmask
); /* W1C: Write 1 to Clear */
1155 if (ranges_overlap(addr
, l
, PCI_BASE_ADDRESS_0
, 24) ||
1156 ranges_overlap(addr
, l
, PCI_ROM_ADDRESS
, 4) ||
1157 ranges_overlap(addr
, l
, PCI_ROM_ADDRESS1
, 4) ||
1158 range_covers_byte(addr
, l
, PCI_COMMAND
))
1159 pci_update_mappings(d
);
1161 if (range_covers_byte(addr
, l
, PCI_COMMAND
)) {
1162 pci_update_irq_disabled(d
, was_irq_disabled
);
1163 memory_region_set_enabled(&d
->bus_master_enable_region
,
1164 pci_get_word(d
->config
+ PCI_COMMAND
)
1165 & PCI_COMMAND_MASTER
);
1168 msi_write_config(d
, addr
, val
, l
);
1169 msix_write_config(d
, addr
, val
, l
);
1172 /***********************************************************/
1173 /* generic PCI irq support */
1175 /* 0 <= irq_num <= 3. level must be 0 or 1 */
1176 static void pci_set_irq(void *opaque
, int irq_num
, int level
)
1178 PCIDevice
*pci_dev
= opaque
;
1181 change
= level
- pci_irq_state(pci_dev
, irq_num
);
1185 pci_set_irq_state(pci_dev
, irq_num
, level
);
1186 pci_update_irq_status(pci_dev
);
1187 if (pci_irq_disabled(pci_dev
))
1189 pci_change_irq_level(pci_dev
, irq_num
, change
);
1192 /* Special hooks used by device assignment */
1193 void pci_bus_set_route_irq_fn(PCIBus
*bus
, pci_route_irq_fn route_intx_to_irq
)
1195 assert(pci_bus_is_root(bus
));
1196 bus
->route_intx_to_irq
= route_intx_to_irq
;
1199 PCIINTxRoute
pci_device_route_intx_to_irq(PCIDevice
*dev
, int pin
)
1205 pin
= bus
->map_irq(dev
, pin
);
1206 dev
= bus
->parent_dev
;
1209 if (!bus
->route_intx_to_irq
) {
1210 error_report("PCI: Bug - unimplemented PCI INTx routing (%s)",
1211 object_get_typename(OBJECT(bus
->qbus
.parent
)));
1212 return (PCIINTxRoute
) { PCI_INTX_DISABLED
, -1 };
1215 return bus
->route_intx_to_irq(bus
->irq_opaque
, pin
);
1218 bool pci_intx_route_changed(PCIINTxRoute
*old
, PCIINTxRoute
*new)
1220 return old
->mode
!= new->mode
|| old
->irq
!= new->irq
;
1223 void pci_bus_fire_intx_routing_notifier(PCIBus
*bus
)
1229 for (i
= 0; i
< ARRAY_SIZE(bus
->devices
); ++i
) {
1230 dev
= bus
->devices
[i
];
1231 if (dev
&& dev
->intx_routing_notifier
) {
1232 dev
->intx_routing_notifier(dev
);
1236 QLIST_FOREACH(sec
, &bus
->child
, sibling
) {
1237 pci_bus_fire_intx_routing_notifier(sec
);
1241 void pci_device_set_intx_routing_notifier(PCIDevice
*dev
,
1242 PCIINTxRoutingNotifier notifier
)
1244 dev
->intx_routing_notifier
= notifier
;
1248 * PCI-to-PCI bridge specification
1249 * 9.1: Interrupt routing. Table 9-1
1251 * the PCI Express Base Specification, Revision 2.1
1252 * 2.2.8.1: INTx interrutp signaling - Rules
1253 * the Implementation Note
1257 * 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD
1258 * 0-origin unlike PCI interrupt pin register.
1260 int pci_swizzle_map_irq_fn(PCIDevice
*pci_dev
, int pin
)
1262 return (pin
+ PCI_SLOT(pci_dev
->devfn
)) % PCI_NUM_PINS
;
1265 /***********************************************************/
1266 /* monitor info on PCI */
1271 const char *fw_name
;
1272 uint16_t fw_ign_bits
;
1275 static const pci_class_desc pci_class_descriptions
[] =
1277 { 0x0001, "VGA controller", "display"},
1278 { 0x0100, "SCSI controller", "scsi"},
1279 { 0x0101, "IDE controller", "ide"},
1280 { 0x0102, "Floppy controller", "fdc"},
1281 { 0x0103, "IPI controller", "ipi"},
1282 { 0x0104, "RAID controller", "raid"},
1283 { 0x0106, "SATA controller"},
1284 { 0x0107, "SAS controller"},
1285 { 0x0180, "Storage controller"},
1286 { 0x0200, "Ethernet controller", "ethernet"},
1287 { 0x0201, "Token Ring controller", "token-ring"},
1288 { 0x0202, "FDDI controller", "fddi"},
1289 { 0x0203, "ATM controller", "atm"},
1290 { 0x0280, "Network controller"},
1291 { 0x0300, "VGA controller", "display", 0x00ff},
1292 { 0x0301, "XGA controller"},
1293 { 0x0302, "3D controller"},
1294 { 0x0380, "Display controller"},
1295 { 0x0400, "Video controller", "video"},
1296 { 0x0401, "Audio controller", "sound"},
1298 { 0x0403, "Audio controller", "sound"},
1299 { 0x0480, "Multimedia controller"},
1300 { 0x0500, "RAM controller", "memory"},
1301 { 0x0501, "Flash controller", "flash"},
1302 { 0x0580, "Memory controller"},
1303 { 0x0600, "Host bridge", "host"},
1304 { 0x0601, "ISA bridge", "isa"},
1305 { 0x0602, "EISA bridge", "eisa"},
1306 { 0x0603, "MC bridge", "mca"},
1307 { 0x0604, "PCI bridge", "pci"},
1308 { 0x0605, "PCMCIA bridge", "pcmcia"},
1309 { 0x0606, "NUBUS bridge", "nubus"},
1310 { 0x0607, "CARDBUS bridge", "cardbus"},
1311 { 0x0608, "RACEWAY bridge"},
1312 { 0x0680, "Bridge"},
1313 { 0x0700, "Serial port", "serial"},
1314 { 0x0701, "Parallel port", "parallel"},
1315 { 0x0800, "Interrupt controller", "interrupt-controller"},
1316 { 0x0801, "DMA controller", "dma-controller"},
1317 { 0x0802, "Timer", "timer"},
1318 { 0x0803, "RTC", "rtc"},
1319 { 0x0900, "Keyboard", "keyboard"},
1320 { 0x0901, "Pen", "pen"},
1321 { 0x0902, "Mouse", "mouse"},
1322 { 0x0A00, "Dock station", "dock", 0x00ff},
1323 { 0x0B00, "i386 cpu", "cpu", 0x00ff},
1324 { 0x0c00, "Fireware contorller", "fireware"},
1325 { 0x0c01, "Access bus controller", "access-bus"},
1326 { 0x0c02, "SSA controller", "ssa"},
1327 { 0x0c03, "USB controller", "usb"},
1328 { 0x0c04, "Fibre channel controller", "fibre-channel"},
1333 static void pci_for_each_device_under_bus(PCIBus
*bus
,
1334 void (*fn
)(PCIBus
*b
, PCIDevice
*d
,
1341 for(devfn
= 0; devfn
< ARRAY_SIZE(bus
->devices
); devfn
++) {
1342 d
= bus
->devices
[devfn
];
1349 void pci_for_each_device(PCIBus
*bus
, int bus_num
,
1350 void (*fn
)(PCIBus
*b
, PCIDevice
*d
, void *opaque
),
1353 bus
= pci_find_bus_nr(bus
, bus_num
);
1356 pci_for_each_device_under_bus(bus
, fn
, opaque
);
1360 static const pci_class_desc
*get_class_desc(int class)
1362 const pci_class_desc
*desc
;
1364 desc
= pci_class_descriptions
;
1365 while (desc
->desc
&& class != desc
->class) {
1372 static PciDeviceInfoList
*qmp_query_pci_devices(PCIBus
*bus
, int bus_num
);
1374 static PciMemoryRegionList
*qmp_query_pci_regions(const PCIDevice
*dev
)
1376 PciMemoryRegionList
*head
= NULL
, *cur_item
= NULL
;
1379 for (i
= 0; i
< PCI_NUM_REGIONS
; i
++) {
1380 const PCIIORegion
*r
= &dev
->io_regions
[i
];
1381 PciMemoryRegionList
*region
;
1387 region
= g_malloc0(sizeof(*region
));
1388 region
->value
= g_malloc0(sizeof(*region
->value
));
1390 if (r
->type
& PCI_BASE_ADDRESS_SPACE_IO
) {
1391 region
->value
->type
= g_strdup("io");
1393 region
->value
->type
= g_strdup("memory");
1394 region
->value
->has_prefetch
= true;
1395 region
->value
->prefetch
= !!(r
->type
& PCI_BASE_ADDRESS_MEM_PREFETCH
);
1396 region
->value
->has_mem_type_64
= true;
1397 region
->value
->mem_type_64
= !!(r
->type
& PCI_BASE_ADDRESS_MEM_TYPE_64
);
1400 region
->value
->bar
= i
;
1401 region
->value
->address
= r
->addr
;
1402 region
->value
->size
= r
->size
;
1404 /* XXX: waiting for the qapi to support GSList */
1406 head
= cur_item
= region
;
1408 cur_item
->next
= region
;
1416 static PciBridgeInfo
*qmp_query_pci_bridge(PCIDevice
*dev
, PCIBus
*bus
,
1419 PciBridgeInfo
*info
;
1421 info
= g_malloc0(sizeof(*info
));
1423 info
->bus
.number
= dev
->config
[PCI_PRIMARY_BUS
];
1424 info
->bus
.secondary
= dev
->config
[PCI_SECONDARY_BUS
];
1425 info
->bus
.subordinate
= dev
->config
[PCI_SUBORDINATE_BUS
];
1427 info
->bus
.io_range
= g_malloc0(sizeof(*info
->bus
.io_range
));
1428 info
->bus
.io_range
->base
= pci_bridge_get_base(dev
, PCI_BASE_ADDRESS_SPACE_IO
);
1429 info
->bus
.io_range
->limit
= pci_bridge_get_limit(dev
, PCI_BASE_ADDRESS_SPACE_IO
);
1431 info
->bus
.memory_range
= g_malloc0(sizeof(*info
->bus
.memory_range
));
1432 info
->bus
.memory_range
->base
= pci_bridge_get_base(dev
, PCI_BASE_ADDRESS_SPACE_MEMORY
);
1433 info
->bus
.memory_range
->limit
= pci_bridge_get_limit(dev
, PCI_BASE_ADDRESS_SPACE_MEMORY
);
1435 info
->bus
.prefetchable_range
= g_malloc0(sizeof(*info
->bus
.prefetchable_range
));
1436 info
->bus
.prefetchable_range
->base
= pci_bridge_get_base(dev
, PCI_BASE_ADDRESS_MEM_PREFETCH
);
1437 info
->bus
.prefetchable_range
->limit
= pci_bridge_get_limit(dev
, PCI_BASE_ADDRESS_MEM_PREFETCH
);
1439 if (dev
->config
[PCI_SECONDARY_BUS
] != 0) {
1440 PCIBus
*child_bus
= pci_find_bus_nr(bus
, dev
->config
[PCI_SECONDARY_BUS
]);
1442 info
->has_devices
= true;
1443 info
->devices
= qmp_query_pci_devices(child_bus
, dev
->config
[PCI_SECONDARY_BUS
]);
1450 static PciDeviceInfo
*qmp_query_pci_device(PCIDevice
*dev
, PCIBus
*bus
,
1453 const pci_class_desc
*desc
;
1454 PciDeviceInfo
*info
;
1458 info
= g_malloc0(sizeof(*info
));
1459 info
->bus
= bus_num
;
1460 info
->slot
= PCI_SLOT(dev
->devfn
);
1461 info
->function
= PCI_FUNC(dev
->devfn
);
1463 class = pci_get_word(dev
->config
+ PCI_CLASS_DEVICE
);
1464 info
->class_info
.class = class;
1465 desc
= get_class_desc(class);
1467 info
->class_info
.has_desc
= true;
1468 info
->class_info
.desc
= g_strdup(desc
->desc
);
1471 info
->id
.vendor
= pci_get_word(dev
->config
+ PCI_VENDOR_ID
);
1472 info
->id
.device
= pci_get_word(dev
->config
+ PCI_DEVICE_ID
);
1473 info
->regions
= qmp_query_pci_regions(dev
);
1474 info
->qdev_id
= g_strdup(dev
->qdev
.id
? dev
->qdev
.id
: "");
1476 if (dev
->config
[PCI_INTERRUPT_PIN
] != 0) {
1477 info
->has_irq
= true;
1478 info
->irq
= dev
->config
[PCI_INTERRUPT_LINE
];
1481 type
= dev
->config
[PCI_HEADER_TYPE
] & ~PCI_HEADER_TYPE_MULTI_FUNCTION
;
1482 if (type
== PCI_HEADER_TYPE_BRIDGE
) {
1483 info
->has_pci_bridge
= true;
1484 info
->pci_bridge
= qmp_query_pci_bridge(dev
, bus
, bus_num
);
1490 static PciDeviceInfoList
*qmp_query_pci_devices(PCIBus
*bus
, int bus_num
)
1492 PciDeviceInfoList
*info
, *head
= NULL
, *cur_item
= NULL
;
1496 for (devfn
= 0; devfn
< ARRAY_SIZE(bus
->devices
); devfn
++) {
1497 dev
= bus
->devices
[devfn
];
1499 info
= g_malloc0(sizeof(*info
));
1500 info
->value
= qmp_query_pci_device(dev
, bus
, bus_num
);
1502 /* XXX: waiting for the qapi to support GSList */
1504 head
= cur_item
= info
;
1506 cur_item
->next
= info
;
1515 static PciInfo
*qmp_query_pci_bus(PCIBus
*bus
, int bus_num
)
1517 PciInfo
*info
= NULL
;
1519 bus
= pci_find_bus_nr(bus
, bus_num
);
1521 info
= g_malloc0(sizeof(*info
));
1522 info
->bus
= bus_num
;
1523 info
->devices
= qmp_query_pci_devices(bus
, bus_num
);
1529 PciInfoList
*qmp_query_pci(Error
**errp
)
1531 PciInfoList
*info
, *head
= NULL
, *cur_item
= NULL
;
1532 PCIHostState
*host_bridge
;
1534 QLIST_FOREACH(host_bridge
, &pci_host_bridges
, next
) {
1535 info
= g_malloc0(sizeof(*info
));
1536 info
->value
= qmp_query_pci_bus(host_bridge
->bus
, 0);
1538 /* XXX: waiting for the qapi to support GSList */
1540 head
= cur_item
= info
;
1542 cur_item
->next
= info
;
1550 static const char * const pci_nic_models
[] = {
1562 static const char * const pci_nic_names
[] = {
1574 /* Initialize a PCI NIC. */
1575 /* FIXME callers should check for failure, but don't */
1576 PCIDevice
*pci_nic_init(NICInfo
*nd
, PCIBus
*rootbus
,
1577 const char *default_model
,
1578 const char *default_devaddr
)
1580 const char *devaddr
= nd
->devaddr
? nd
->devaddr
: default_devaddr
;
1587 i
= qemu_find_nic_model(nd
, pci_nic_models
, default_model
);
1591 bus
= pci_get_bus_devfn(&devfn
, rootbus
, devaddr
);
1593 error_report("Invalid PCI device address %s for device %s",
1594 devaddr
, pci_nic_names
[i
]);
1598 pci_dev
= pci_create(bus
, devfn
, pci_nic_names
[i
]);
1599 dev
= &pci_dev
->qdev
;
1600 qdev_set_nic_properties(dev
, nd
);
1601 if (qdev_init(dev
) < 0)
1606 PCIDevice
*pci_nic_init_nofail(NICInfo
*nd
, PCIBus
*rootbus
,
1607 const char *default_model
,
1608 const char *default_devaddr
)
1612 if (qemu_show_nic_models(nd
->model
, pci_nic_models
))
1615 res
= pci_nic_init(nd
, rootbus
, default_model
, default_devaddr
);
1621 PCIDevice
*pci_vga_init(PCIBus
*bus
)
1623 switch (vga_interface_type
) {
1625 return pci_create_simple(bus
, -1, "cirrus-vga");
1627 return pci_create_simple(bus
, -1, "qxl-vga");
1629 return pci_create_simple(bus
, -1, "VGA");
1631 return pci_create_simple(bus
, -1, "vmware-svga");
1633 default: /* Other non-PCI types. Checking for unsupported types is already
1639 /* Whether a given bus number is in range of the secondary
1640 * bus of the given bridge device. */
1641 static bool pci_secondary_bus_in_range(PCIDevice
*dev
, int bus_num
)
1643 return !(pci_get_word(dev
->config
+ PCI_BRIDGE_CONTROL
) &
1644 PCI_BRIDGE_CTL_BUS_RESET
) /* Don't walk the bus if it's reset. */ &&
1645 dev
->config
[PCI_SECONDARY_BUS
] < bus_num
&&
1646 bus_num
<= dev
->config
[PCI_SUBORDINATE_BUS
];
1649 static PCIBus
*pci_find_bus_nr(PCIBus
*bus
, int bus_num
)
1657 if (pci_bus_num(bus
) == bus_num
) {
1661 /* Consider all bus numbers in range for the host pci bridge. */
1662 if (!pci_bus_is_root(bus
) &&
1663 !pci_secondary_bus_in_range(bus
->parent_dev
, bus_num
)) {
1668 for (; bus
; bus
= sec
) {
1669 QLIST_FOREACH(sec
, &bus
->child
, sibling
) {
1670 assert(!pci_bus_is_root(sec
));
1671 if (sec
->parent_dev
->config
[PCI_SECONDARY_BUS
] == bus_num
) {
1674 if (pci_secondary_bus_in_range(sec
->parent_dev
, bus_num
)) {
1683 PCIDevice
*pci_find_device(PCIBus
*bus
, int bus_num
, uint8_t devfn
)
1685 bus
= pci_find_bus_nr(bus
, bus_num
);
1690 return bus
->devices
[devfn
];
1693 static int pci_qdev_init(DeviceState
*qdev
)
1695 PCIDevice
*pci_dev
= (PCIDevice
*)qdev
;
1696 PCIDeviceClass
*pc
= PCI_DEVICE_GET_CLASS(pci_dev
);
1699 bool is_default_rom
;
1701 /* initialize cap_present for pci_is_express() and pci_config_size() */
1702 if (pc
->is_express
) {
1703 pci_dev
->cap_present
|= QEMU_PCI_CAP_EXPRESS
;
1706 bus
= PCI_BUS(qdev_get_parent_bus(qdev
));
1707 pci_dev
= do_pci_register_device(pci_dev
, bus
,
1708 object_get_typename(OBJECT(qdev
)),
1710 if (pci_dev
== NULL
)
1712 if (qdev
->hotplugged
&& pc
->no_hotplug
) {
1713 qerror_report(QERR_DEVICE_NO_HOTPLUG
, object_get_typename(OBJECT(pci_dev
)));
1714 do_pci_unregister_device(pci_dev
);
1718 rc
= pc
->init(pci_dev
);
1720 do_pci_unregister_device(pci_dev
);
1726 is_default_rom
= false;
1727 if (pci_dev
->romfile
== NULL
&& pc
->romfile
!= NULL
) {
1728 pci_dev
->romfile
= g_strdup(pc
->romfile
);
1729 is_default_rom
= true;
1731 pci_add_option_rom(pci_dev
, is_default_rom
);
1734 /* Let buses differentiate between hotplug and when device is
1735 * enabled during qemu machine creation. */
1736 rc
= bus
->hotplug(bus
->hotplug_qdev
, pci_dev
,
1737 qdev
->hotplugged
? PCI_HOTPLUG_ENABLED
:
1738 PCI_COLDPLUG_ENABLED
);
1740 int r
= pci_unregister_device(&pci_dev
->qdev
);
1748 static int pci_unplug_device(DeviceState
*qdev
)
1750 PCIDevice
*dev
= PCI_DEVICE(qdev
);
1751 PCIDeviceClass
*pc
= PCI_DEVICE_GET_CLASS(dev
);
1753 if (pc
->no_hotplug
) {
1754 qerror_report(QERR_DEVICE_NO_HOTPLUG
, object_get_typename(OBJECT(dev
)));
1757 return dev
->bus
->hotplug(dev
->bus
->hotplug_qdev
, dev
,
1758 PCI_HOTPLUG_DISABLED
);
1761 PCIDevice
*pci_create_multifunction(PCIBus
*bus
, int devfn
, bool multifunction
,
1766 dev
= qdev_create(&bus
->qbus
, name
);
1767 qdev_prop_set_int32(dev
, "addr", devfn
);
1768 qdev_prop_set_bit(dev
, "multifunction", multifunction
);
1769 return PCI_DEVICE(dev
);
1772 PCIDevice
*pci_create_simple_multifunction(PCIBus
*bus
, int devfn
,
1776 PCIDevice
*dev
= pci_create_multifunction(bus
, devfn
, multifunction
, name
);
1777 qdev_init_nofail(&dev
->qdev
);
1781 PCIDevice
*pci_create(PCIBus
*bus
, int devfn
, const char *name
)
1783 return pci_create_multifunction(bus
, devfn
, false, name
);
1786 PCIDevice
*pci_create_simple(PCIBus
*bus
, int devfn
, const char *name
)
1788 return pci_create_simple_multifunction(bus
, devfn
, false, name
);
1791 static uint8_t pci_find_space(PCIDevice
*pdev
, uint8_t size
)
1793 int offset
= PCI_CONFIG_HEADER_SIZE
;
1795 for (i
= PCI_CONFIG_HEADER_SIZE
; i
< PCI_CONFIG_SPACE_SIZE
; ++i
) {
1798 else if (i
- offset
+ 1 == size
)
1804 static uint8_t pci_find_capability_list(PCIDevice
*pdev
, uint8_t cap_id
,
1809 if (!(pdev
->config
[PCI_STATUS
] & PCI_STATUS_CAP_LIST
))
1812 for (prev
= PCI_CAPABILITY_LIST
; (next
= pdev
->config
[prev
]);
1813 prev
= next
+ PCI_CAP_LIST_NEXT
)
1814 if (pdev
->config
[next
+ PCI_CAP_LIST_ID
] == cap_id
)
1822 static uint8_t pci_find_capability_at_offset(PCIDevice
*pdev
, uint8_t offset
)
1824 uint8_t next
, prev
, found
= 0;
1826 if (!(pdev
->used
[offset
])) {
1830 assert(pdev
->config
[PCI_STATUS
] & PCI_STATUS_CAP_LIST
);
1832 for (prev
= PCI_CAPABILITY_LIST
; (next
= pdev
->config
[prev
]);
1833 prev
= next
+ PCI_CAP_LIST_NEXT
) {
1834 if (next
<= offset
&& next
> found
) {
1841 /* Patch the PCI vendor and device ids in a PCI rom image if necessary.
1842 This is needed for an option rom which is used for more than one device. */
1843 static void pci_patch_ids(PCIDevice
*pdev
, uint8_t *ptr
, int size
)
1847 uint16_t rom_vendor_id
;
1848 uint16_t rom_device_id
;
1850 uint16_t pcir_offset
;
1853 /* Words in rom data are little endian (like in PCI configuration),
1854 so they can be read / written with pci_get_word / pci_set_word. */
1856 /* Only a valid rom will be patched. */
1857 rom_magic
= pci_get_word(ptr
);
1858 if (rom_magic
!= 0xaa55) {
1859 PCI_DPRINTF("Bad ROM magic %04x\n", rom_magic
);
1862 pcir_offset
= pci_get_word(ptr
+ 0x18);
1863 if (pcir_offset
+ 8 >= size
|| memcmp(ptr
+ pcir_offset
, "PCIR", 4)) {
1864 PCI_DPRINTF("Bad PCIR offset 0x%x or signature\n", pcir_offset
);
1868 vendor_id
= pci_get_word(pdev
->config
+ PCI_VENDOR_ID
);
1869 device_id
= pci_get_word(pdev
->config
+ PCI_DEVICE_ID
);
1870 rom_vendor_id
= pci_get_word(ptr
+ pcir_offset
+ 4);
1871 rom_device_id
= pci_get_word(ptr
+ pcir_offset
+ 6);
1873 PCI_DPRINTF("%s: ROM id %04x%04x / PCI id %04x%04x\n", pdev
->romfile
,
1874 vendor_id
, device_id
, rom_vendor_id
, rom_device_id
);
1878 if (vendor_id
!= rom_vendor_id
) {
1879 /* Patch vendor id and checksum (at offset 6 for etherboot roms). */
1880 checksum
+= (uint8_t)rom_vendor_id
+ (uint8_t)(rom_vendor_id
>> 8);
1881 checksum
-= (uint8_t)vendor_id
+ (uint8_t)(vendor_id
>> 8);
1882 PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr
[6], checksum
);
1884 pci_set_word(ptr
+ pcir_offset
+ 4, vendor_id
);
1887 if (device_id
!= rom_device_id
) {
1888 /* Patch device id and checksum (at offset 6 for etherboot roms). */
1889 checksum
+= (uint8_t)rom_device_id
+ (uint8_t)(rom_device_id
>> 8);
1890 checksum
-= (uint8_t)device_id
+ (uint8_t)(device_id
>> 8);
1891 PCI_DPRINTF("ROM checksum %02x / %02x\n", ptr
[6], checksum
);
1893 pci_set_word(ptr
+ pcir_offset
+ 6, device_id
);
1897 /* Add an option rom for the device */
1898 static int pci_add_option_rom(PCIDevice
*pdev
, bool is_default_rom
)
1904 const VMStateDescription
*vmsd
;
1908 if (strlen(pdev
->romfile
) == 0)
1911 if (!pdev
->rom_bar
) {
1913 * Load rom via fw_cfg instead of creating a rom bar,
1914 * for 0.11 compatibility.
1916 int class = pci_get_word(pdev
->config
+ PCI_CLASS_DEVICE
);
1917 if (class == 0x0300) {
1918 rom_add_vga(pdev
->romfile
);
1920 rom_add_option(pdev
->romfile
, -1);
1925 path
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, pdev
->romfile
);
1927 path
= g_strdup(pdev
->romfile
);
1930 size
= get_image_size(path
);
1932 error_report("%s: failed to find romfile \"%s\"",
1933 __func__
, pdev
->romfile
);
1936 } else if (size
== 0) {
1937 error_report("%s: ignoring empty romfile \"%s\"",
1938 __func__
, pdev
->romfile
);
1942 if (size
& (size
- 1)) {
1943 size
= 1 << qemu_fls(size
);
1946 vmsd
= qdev_get_vmsd(DEVICE(pdev
));
1949 snprintf(name
, sizeof(name
), "%s.rom", vmsd
->name
);
1951 snprintf(name
, sizeof(name
), "%s.rom", object_get_typename(OBJECT(pdev
)));
1953 pdev
->has_rom
= true;
1954 memory_region_init_ram(&pdev
->rom
, OBJECT(pdev
), name
, size
);
1955 vmstate_register_ram(&pdev
->rom
, &pdev
->qdev
);
1956 ptr
= memory_region_get_ram_ptr(&pdev
->rom
);
1957 load_image(path
, ptr
);
1960 if (is_default_rom
) {
1961 /* Only the default rom images will be patched (if needed). */
1962 pci_patch_ids(pdev
, ptr
, size
);
1965 pci_register_bar(pdev
, PCI_ROM_SLOT
, 0, &pdev
->rom
);
1970 static void pci_del_option_rom(PCIDevice
*pdev
)
1975 vmstate_unregister_ram(&pdev
->rom
, &pdev
->qdev
);
1976 memory_region_destroy(&pdev
->rom
);
1977 pdev
->has_rom
= false;
1982 * Reserve space and add capability to the linked list in pci config space
1985 * Find and reserve space and add capability to the linked list
1986 * in pci config space */
1987 int pci_add_capability(PCIDevice
*pdev
, uint8_t cap_id
,
1988 uint8_t offset
, uint8_t size
)
1991 int i
, overlapping_cap
;
1994 offset
= pci_find_space(pdev
, size
);
1999 /* Verify that capabilities don't overlap. Note: device assignment
2000 * depends on this check to verify that the device is not broken.
2001 * Should never trigger for emulated devices, but it's helpful
2002 * for debugging these. */
2003 for (i
= offset
; i
< offset
+ size
; i
++) {
2004 overlapping_cap
= pci_find_capability_at_offset(pdev
, i
);
2005 if (overlapping_cap
) {
2006 fprintf(stderr
, "ERROR: %s:%02x:%02x.%x "
2007 "Attempt to add PCI capability %x at offset "
2008 "%x overlaps existing capability %x at offset %x\n",
2009 pci_root_bus_path(pdev
), pci_bus_num(pdev
->bus
),
2010 PCI_SLOT(pdev
->devfn
), PCI_FUNC(pdev
->devfn
),
2011 cap_id
, offset
, overlapping_cap
, i
);
2017 config
= pdev
->config
+ offset
;
2018 config
[PCI_CAP_LIST_ID
] = cap_id
;
2019 config
[PCI_CAP_LIST_NEXT
] = pdev
->config
[PCI_CAPABILITY_LIST
];
2020 pdev
->config
[PCI_CAPABILITY_LIST
] = offset
;
2021 pdev
->config
[PCI_STATUS
] |= PCI_STATUS_CAP_LIST
;
2022 memset(pdev
->used
+ offset
, 0xFF, QEMU_ALIGN_UP(size
, 4));
2023 /* Make capability read-only by default */
2024 memset(pdev
->wmask
+ offset
, 0, size
);
2025 /* Check capability by default */
2026 memset(pdev
->cmask
+ offset
, 0xFF, size
);
2030 /* Unlink capability from the pci config space. */
2031 void pci_del_capability(PCIDevice
*pdev
, uint8_t cap_id
, uint8_t size
)
2033 uint8_t prev
, offset
= pci_find_capability_list(pdev
, cap_id
, &prev
);
2036 pdev
->config
[prev
] = pdev
->config
[offset
+ PCI_CAP_LIST_NEXT
];
2037 /* Make capability writable again */
2038 memset(pdev
->wmask
+ offset
, 0xff, size
);
2039 memset(pdev
->w1cmask
+ offset
, 0, size
);
2040 /* Clear cmask as device-specific registers can't be checked */
2041 memset(pdev
->cmask
+ offset
, 0, size
);
2042 memset(pdev
->used
+ offset
, 0, QEMU_ALIGN_UP(size
, 4));
2044 if (!pdev
->config
[PCI_CAPABILITY_LIST
])
2045 pdev
->config
[PCI_STATUS
] &= ~PCI_STATUS_CAP_LIST
;
2048 uint8_t pci_find_capability(PCIDevice
*pdev
, uint8_t cap_id
)
2050 return pci_find_capability_list(pdev
, cap_id
, NULL
);
2053 static void pcibus_dev_print(Monitor
*mon
, DeviceState
*dev
, int indent
)
2055 PCIDevice
*d
= (PCIDevice
*)dev
;
2056 const pci_class_desc
*desc
;
2061 class = pci_get_word(d
->config
+ PCI_CLASS_DEVICE
);
2062 desc
= pci_class_descriptions
;
2063 while (desc
->desc
&& class != desc
->class)
2066 snprintf(ctxt
, sizeof(ctxt
), "%s", desc
->desc
);
2068 snprintf(ctxt
, sizeof(ctxt
), "Class %04x", class);
2071 monitor_printf(mon
, "%*sclass %s, addr %02x:%02x.%x, "
2072 "pci id %04x:%04x (sub %04x:%04x)\n",
2073 indent
, "", ctxt
, pci_bus_num(d
->bus
),
2074 PCI_SLOT(d
->devfn
), PCI_FUNC(d
->devfn
),
2075 pci_get_word(d
->config
+ PCI_VENDOR_ID
),
2076 pci_get_word(d
->config
+ PCI_DEVICE_ID
),
2077 pci_get_word(d
->config
+ PCI_SUBSYSTEM_VENDOR_ID
),
2078 pci_get_word(d
->config
+ PCI_SUBSYSTEM_ID
));
2079 for (i
= 0; i
< PCI_NUM_REGIONS
; i
++) {
2080 r
= &d
->io_regions
[i
];
2083 monitor_printf(mon
, "%*sbar %d: %s at 0x%"FMT_PCIBUS
2084 " [0x%"FMT_PCIBUS
"]\n",
2086 i
, r
->type
& PCI_BASE_ADDRESS_SPACE_IO
? "i/o" : "mem",
2087 r
->addr
, r
->addr
+ r
->size
- 1);
2091 static char *pci_dev_fw_name(DeviceState
*dev
, char *buf
, int len
)
2093 PCIDevice
*d
= (PCIDevice
*)dev
;
2094 const char *name
= NULL
;
2095 const pci_class_desc
*desc
= pci_class_descriptions
;
2096 int class = pci_get_word(d
->config
+ PCI_CLASS_DEVICE
);
2098 while (desc
->desc
&&
2099 (class & ~desc
->fw_ign_bits
) !=
2100 (desc
->class & ~desc
->fw_ign_bits
)) {
2105 name
= desc
->fw_name
;
2109 pstrcpy(buf
, len
, name
);
2111 snprintf(buf
, len
, "pci%04x,%04x",
2112 pci_get_word(d
->config
+ PCI_VENDOR_ID
),
2113 pci_get_word(d
->config
+ PCI_DEVICE_ID
));
2119 static char *pcibus_get_fw_dev_path(DeviceState
*dev
)
2121 PCIDevice
*d
= (PCIDevice
*)dev
;
2122 char path
[50], name
[33];
2125 off
= snprintf(path
, sizeof(path
), "%s@%x",
2126 pci_dev_fw_name(dev
, name
, sizeof name
),
2127 PCI_SLOT(d
->devfn
));
2128 if (PCI_FUNC(d
->devfn
))
2129 snprintf(path
+ off
, sizeof(path
) + off
, ",%x", PCI_FUNC(d
->devfn
));
2130 return g_strdup(path
);
2133 static char *pcibus_get_dev_path(DeviceState
*dev
)
2135 PCIDevice
*d
= container_of(dev
, PCIDevice
, qdev
);
2138 /* Path format: Domain:00:Slot.Function:Slot.Function....:Slot.Function.
2139 * 00 is added here to make this format compatible with
2140 * domain:Bus:Slot.Func for systems without nested PCI bridges.
2141 * Slot.Function list specifies the slot and function numbers for all
2142 * devices on the path from root to the specific device. */
2143 const char *root_bus_path
;
2145 char slot
[] = ":SS.F";
2146 int slot_len
= sizeof slot
- 1 /* For '\0' */;
2151 root_bus_path
= pci_root_bus_path(d
);
2152 root_bus_len
= strlen(root_bus_path
);
2154 /* Calculate # of slots on path between device and root. */;
2156 for (t
= d
; t
; t
= t
->bus
->parent_dev
) {
2160 path_len
= root_bus_len
+ slot_len
* slot_depth
;
2162 /* Allocate memory, fill in the terminating null byte. */
2163 path
= g_malloc(path_len
+ 1 /* For '\0' */);
2164 path
[path_len
] = '\0';
2166 memcpy(path
, root_bus_path
, root_bus_len
);
2168 /* Fill in slot numbers. We walk up from device to root, so need to print
2169 * them in the reverse order, last to first. */
2170 p
= path
+ path_len
;
2171 for (t
= d
; t
; t
= t
->bus
->parent_dev
) {
2173 s
= snprintf(slot
, sizeof slot
, ":%02x.%x",
2174 PCI_SLOT(t
->devfn
), PCI_FUNC(t
->devfn
));
2175 assert(s
== slot_len
);
2176 memcpy(p
, slot
, slot_len
);
2182 static int pci_qdev_find_recursive(PCIBus
*bus
,
2183 const char *id
, PCIDevice
**pdev
)
2185 DeviceState
*qdev
= qdev_find_recursive(&bus
->qbus
, id
);
2190 /* roughly check if given qdev is pci device */
2191 if (object_dynamic_cast(OBJECT(qdev
), TYPE_PCI_DEVICE
)) {
2192 *pdev
= PCI_DEVICE(qdev
);
2198 int pci_qdev_find_device(const char *id
, PCIDevice
**pdev
)
2200 PCIHostState
*host_bridge
;
2203 QLIST_FOREACH(host_bridge
, &pci_host_bridges
, next
) {
2204 int tmp
= pci_qdev_find_recursive(host_bridge
->bus
, id
, pdev
);
2209 if (tmp
!= -ENODEV
) {
2217 MemoryRegion
*pci_address_space(PCIDevice
*dev
)
2219 return dev
->bus
->address_space_mem
;
2222 MemoryRegion
*pci_address_space_io(PCIDevice
*dev
)
2224 return dev
->bus
->address_space_io
;
2227 static void pci_device_class_init(ObjectClass
*klass
, void *data
)
2229 DeviceClass
*k
= DEVICE_CLASS(klass
);
2230 k
->init
= pci_qdev_init
;
2231 k
->unplug
= pci_unplug_device
;
2232 k
->exit
= pci_unregister_device
;
2233 k
->bus_type
= TYPE_PCI_BUS
;
2234 k
->props
= pci_props
;
2237 void pci_setup_iommu(PCIBus
*bus
, PCIIOMMUFunc fn
, void *opaque
)
2240 bus
->iommu_opaque
= opaque
;
2243 static const TypeInfo pci_device_type_info
= {
2244 .name
= TYPE_PCI_DEVICE
,
2245 .parent
= TYPE_DEVICE
,
2246 .instance_size
= sizeof(PCIDevice
),
2248 .class_size
= sizeof(PCIDeviceClass
),
2249 .class_init
= pci_device_class_init
,
2252 static void pci_register_types(void)
2254 type_register_static(&pci_bus_info
);
2255 type_register_static(&pcie_bus_info
);
2256 type_register_static(&pci_device_type_info
);
2259 type_init(pci_register_types
)