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
33 # define PCI_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
35 # define PCI_DPRINTF(format, ...) do { } while (0)
41 pci_set_irq_fn set_irq
;
42 pci_map_irq_fn map_irq
;
43 pci_hotplug_fn hotplug
;
45 PCIDevice
*devices
[256];
46 PCIDevice
*parent_dev
;
47 target_phys_addr_t mem_base
;
49 QLIST_HEAD(, PCIBus
) child
; /* this will be replaced by qdev later */
50 QLIST_ENTRY(PCIBus
) sibling
;/* this will be replaced by qdev later */
52 /* The bus IRQ state is the logical OR of the connected devices.
53 Keep a count of the number of devices with raised IRQs. */
58 static void pcibus_dev_print(Monitor
*mon
, DeviceState
*dev
, int indent
);
60 static struct BusInfo pci_bus_info
= {
62 .size
= sizeof(PCIBus
),
63 .print_dev
= pcibus_dev_print
,
64 .props
= (Property
[]) {
65 DEFINE_PROP_PCI_DEVFN("addr", PCIDevice
, devfn
, -1),
66 DEFINE_PROP_STRING("romfile", PCIDevice
, romfile
),
67 DEFINE_PROP_END_OF_LIST()
71 static void pci_update_mappings(PCIDevice
*d
);
72 static void pci_set_irq(void *opaque
, int irq_num
, int level
);
73 static int pci_add_option_rom(PCIDevice
*pdev
);
75 static uint16_t pci_default_sub_vendor_id
= PCI_SUBVENDOR_ID_REDHAT_QUMRANET
;
76 static uint16_t pci_default_sub_device_id
= PCI_SUBDEVICE_ID_QEMU
;
81 QLIST_ENTRY(PCIHostBus
) next
;
83 static QLIST_HEAD(, PCIHostBus
) host_buses
;
85 static const VMStateDescription vmstate_pcibus
= {
88 .minimum_version_id
= 1,
89 .minimum_version_id_old
= 1,
90 .fields
= (VMStateField
[]) {
91 VMSTATE_INT32_EQUAL(nirq
, PCIBus
),
92 VMSTATE_VARRAY_INT32(irq_count
, PCIBus
, nirq
, 0, vmstate_info_int32
, int32_t),
97 static int pci_bar(PCIDevice
*d
, int reg
)
101 if (reg
!= PCI_ROM_SLOT
)
102 return PCI_BASE_ADDRESS_0
+ reg
* 4;
104 type
= d
->config
[PCI_HEADER_TYPE
] & ~PCI_HEADER_TYPE_MULTI_FUNCTION
;
105 return type
== PCI_HEADER_TYPE_BRIDGE
? PCI_ROM_ADDRESS1
: PCI_ROM_ADDRESS
;
108 static inline int pci_irq_state(PCIDevice
*d
, int irq_num
)
110 return (d
->irq_state
>> irq_num
) & 0x1;
113 static inline void pci_set_irq_state(PCIDevice
*d
, int irq_num
, int level
)
115 d
->irq_state
&= ~(0x1 << irq_num
);
116 d
->irq_state
|= level
<< irq_num
;
119 static void pci_change_irq_level(PCIDevice
*pci_dev
, int irq_num
, int change
)
124 irq_num
= bus
->map_irq(pci_dev
, irq_num
);
127 pci_dev
= bus
->parent_dev
;
129 bus
->irq_count
[irq_num
] += change
;
130 bus
->set_irq(bus
->irq_opaque
, irq_num
, bus
->irq_count
[irq_num
] != 0);
133 /* Update interrupt status bit in config space on interrupt
135 static void pci_update_irq_status(PCIDevice
*dev
)
137 if (dev
->irq_state
) {
138 dev
->config
[PCI_STATUS
] |= PCI_STATUS_INTERRUPT
;
140 dev
->config
[PCI_STATUS
] &= ~PCI_STATUS_INTERRUPT
;
144 static void pci_device_reset(PCIDevice
*dev
)
149 pci_update_irq_status(dev
);
150 dev
->config
[PCI_COMMAND
] &= ~(PCI_COMMAND_IO
| PCI_COMMAND_MEMORY
|
152 dev
->config
[PCI_CACHE_LINE_SIZE
] = 0x0;
153 dev
->config
[PCI_INTERRUPT_LINE
] = 0x0;
154 for (r
= 0; r
< PCI_NUM_REGIONS
; ++r
) {
155 if (!dev
->io_regions
[r
].size
) {
158 pci_set_long(dev
->config
+ pci_bar(dev
, r
), dev
->io_regions
[r
].type
);
160 pci_update_mappings(dev
);
163 static void pci_bus_reset(void *opaque
)
165 PCIBus
*bus
= opaque
;
168 for (i
= 0; i
< bus
->nirq
; i
++) {
169 bus
->irq_count
[i
] = 0;
171 for (i
= 0; i
< ARRAY_SIZE(bus
->devices
); ++i
) {
172 if (bus
->devices
[i
]) {
173 pci_device_reset(bus
->devices
[i
]);
178 static void pci_host_bus_register(int domain
, PCIBus
*bus
)
180 struct PCIHostBus
*host
;
181 host
= qemu_mallocz(sizeof(*host
));
182 host
->domain
= domain
;
184 QLIST_INSERT_HEAD(&host_buses
, host
, next
);
187 PCIBus
*pci_find_root_bus(int domain
)
189 struct PCIHostBus
*host
;
191 QLIST_FOREACH(host
, &host_buses
, next
) {
192 if (host
->domain
== domain
) {
200 void pci_bus_new_inplace(PCIBus
*bus
, DeviceState
*parent
,
201 const char *name
, int devfn_min
)
203 qbus_create_inplace(&bus
->qbus
, &pci_bus_info
, parent
, name
);
204 bus
->devfn_min
= devfn_min
;
207 QLIST_INIT(&bus
->child
);
208 pci_host_bus_register(0, bus
); /* for now only pci domain 0 is supported */
210 vmstate_register(-1, &vmstate_pcibus
, bus
);
211 qemu_register_reset(pci_bus_reset
, bus
);
214 PCIBus
*pci_bus_new(DeviceState
*parent
, const char *name
, int devfn_min
)
218 bus
= qemu_mallocz(sizeof(*bus
));
219 bus
->qbus
.qdev_allocated
= 1;
220 pci_bus_new_inplace(bus
, parent
, name
, devfn_min
);
224 void pci_bus_irqs(PCIBus
*bus
, pci_set_irq_fn set_irq
, pci_map_irq_fn map_irq
,
225 void *irq_opaque
, int nirq
)
227 bus
->set_irq
= set_irq
;
228 bus
->map_irq
= map_irq
;
229 bus
->irq_opaque
= irq_opaque
;
231 bus
->irq_count
= qemu_mallocz(nirq
* sizeof(bus
->irq_count
[0]));
234 void pci_bus_hotplug(PCIBus
*bus
, pci_hotplug_fn hotplug
)
236 bus
->qbus
.allow_hotplug
= 1;
237 bus
->hotplug
= hotplug
;
240 void pci_bus_set_mem_base(PCIBus
*bus
, target_phys_addr_t base
)
242 bus
->mem_base
= base
;
245 PCIBus
*pci_register_bus(DeviceState
*parent
, const char *name
,
246 pci_set_irq_fn set_irq
, pci_map_irq_fn map_irq
,
247 void *irq_opaque
, int devfn_min
, int nirq
)
251 bus
= pci_bus_new(parent
, name
, devfn_min
);
252 pci_bus_irqs(bus
, set_irq
, map_irq
, irq_opaque
, nirq
);
256 static void pci_register_secondary_bus(PCIBus
*parent
,
259 pci_map_irq_fn map_irq
,
262 qbus_create_inplace(&bus
->qbus
, &pci_bus_info
, &dev
->qdev
, name
);
263 bus
->map_irq
= map_irq
;
264 bus
->parent_dev
= dev
;
266 QLIST_INIT(&bus
->child
);
267 QLIST_INSERT_HEAD(&parent
->child
, bus
, sibling
);
270 static void pci_unregister_secondary_bus(PCIBus
*bus
)
272 assert(QLIST_EMPTY(&bus
->child
));
273 QLIST_REMOVE(bus
, sibling
);
276 int pci_bus_num(PCIBus
*s
)
279 return 0; /* pci host bridge */
280 return s
->parent_dev
->config
[PCI_SECONDARY_BUS
];
283 static int get_pci_config_device(QEMUFile
*f
, void *pv
, size_t size
)
285 PCIDevice
*s
= container_of(pv
, PCIDevice
, config
);
289 assert(size
== pci_config_size(s
));
290 config
= qemu_malloc(size
);
292 qemu_get_buffer(f
, config
, size
);
293 for (i
= 0; i
< size
; ++i
) {
294 if ((config
[i
] ^ s
->config
[i
]) & s
->cmask
[i
] & ~s
->wmask
[i
]) {
299 memcpy(s
->config
, config
, size
);
301 pci_update_mappings(s
);
307 /* just put buffer */
308 static void put_pci_config_device(QEMUFile
*f
, void *pv
, size_t size
)
310 const uint8_t **v
= pv
;
311 assert(size
== pci_config_size(container_of(pv
, PCIDevice
, config
)));
312 qemu_put_buffer(f
, *v
, size
);
315 static VMStateInfo vmstate_info_pci_config
= {
316 .name
= "pci config",
317 .get
= get_pci_config_device
,
318 .put
= put_pci_config_device
,
321 static int get_pci_irq_state(QEMUFile
*f
, void *pv
, size_t size
)
323 PCIDevice
*s
= container_of(pv
, PCIDevice
, config
);
324 uint32_t irq_state
[PCI_NUM_PINS
];
326 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
327 irq_state
[i
] = qemu_get_be32(f
);
328 if (irq_state
[i
] != 0x1 && irq_state
[i
] != 0) {
329 fprintf(stderr
, "irq state %d: must be 0 or 1.\n",
335 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
336 pci_set_irq_state(s
, i
, irq_state
[i
]);
342 static void put_pci_irq_state(QEMUFile
*f
, void *pv
, size_t size
)
345 PCIDevice
*s
= container_of(pv
, PCIDevice
, config
);
347 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
348 qemu_put_be32(f
, pci_irq_state(s
, i
));
352 static VMStateInfo vmstate_info_pci_irq_state
= {
353 .name
= "pci irq state",
354 .get
= get_pci_irq_state
,
355 .put
= put_pci_irq_state
,
358 const VMStateDescription vmstate_pci_device
= {
361 .minimum_version_id
= 1,
362 .minimum_version_id_old
= 1,
363 .fields
= (VMStateField
[]) {
364 VMSTATE_INT32_LE(version_id
, PCIDevice
),
365 VMSTATE_BUFFER_UNSAFE_INFO(config
, PCIDevice
, 0,
366 vmstate_info_pci_config
,
367 PCI_CONFIG_SPACE_SIZE
),
368 VMSTATE_BUFFER_UNSAFE_INFO(irq_state
, PCIDevice
, 2,
369 vmstate_info_pci_irq_state
,
370 PCI_NUM_PINS
* sizeof(int32_t)),
371 VMSTATE_END_OF_LIST()
375 const VMStateDescription vmstate_pcie_device
= {
378 .minimum_version_id
= 1,
379 .minimum_version_id_old
= 1,
380 .fields
= (VMStateField
[]) {
381 VMSTATE_INT32_LE(version_id
, PCIDevice
),
382 VMSTATE_BUFFER_UNSAFE_INFO(config
, PCIDevice
, 0,
383 vmstate_info_pci_config
,
384 PCIE_CONFIG_SPACE_SIZE
),
385 VMSTATE_BUFFER_UNSAFE_INFO(irq_state
, PCIDevice
, 2,
386 vmstate_info_pci_irq_state
,
387 PCI_NUM_PINS
* sizeof(int32_t)),
388 VMSTATE_END_OF_LIST()
392 static inline const VMStateDescription
*pci_get_vmstate(PCIDevice
*s
)
394 return pci_is_express(s
) ? &vmstate_pcie_device
: &vmstate_pci_device
;
397 void pci_device_save(PCIDevice
*s
, QEMUFile
*f
)
399 /* Clear interrupt status bit: it is implicit
400 * in irq_state which we are saving.
401 * This makes us compatible with old devices
402 * which never set or clear this bit. */
403 s
->config
[PCI_STATUS
] &= ~PCI_STATUS_INTERRUPT
;
404 vmstate_save_state(f
, pci_get_vmstate(s
), s
);
405 /* Restore the interrupt status bit. */
406 pci_update_irq_status(s
);
409 int pci_device_load(PCIDevice
*s
, QEMUFile
*f
)
412 ret
= vmstate_load_state(f
, pci_get_vmstate(s
), s
, s
->version_id
);
413 /* Restore the interrupt status bit. */
414 pci_update_irq_status(s
);
418 static int pci_set_default_subsystem_id(PCIDevice
*pci_dev
)
422 id
= (void*)(&pci_dev
->config
[PCI_SUBSYSTEM_VENDOR_ID
]);
423 id
[0] = cpu_to_le16(pci_default_sub_vendor_id
);
424 id
[1] = cpu_to_le16(pci_default_sub_device_id
);
429 * Parse [[<domain>:]<bus>:]<slot>, return -1 on error
431 static int pci_parse_devaddr(const char *addr
, int *domp
, int *busp
, unsigned *slotp
)
436 unsigned long dom
= 0, bus
= 0;
440 val
= strtoul(p
, &e
, 16);
446 val
= strtoul(p
, &e
, 16);
453 val
= strtoul(p
, &e
, 16);
459 if (dom
> 0xffff || bus
> 0xff || val
> 0x1f)
467 /* Note: QEMU doesn't implement domains other than 0 */
468 if (!pci_find_bus(pci_find_root_bus(dom
), bus
))
477 int pci_read_devaddr(Monitor
*mon
, const char *addr
, int *domp
, int *busp
,
480 /* strip legacy tag */
481 if (!strncmp(addr
, "pci_addr=", 9)) {
484 if (pci_parse_devaddr(addr
, domp
, busp
, slotp
)) {
485 monitor_printf(mon
, "Invalid pci address\n");
491 PCIBus
*pci_get_bus_devfn(int *devfnp
, const char *devaddr
)
498 return pci_find_bus(pci_find_root_bus(0), 0);
501 if (pci_parse_devaddr(devaddr
, &dom
, &bus
, &slot
) < 0) {
506 return pci_find_bus(pci_find_root_bus(0), bus
);
509 static void pci_init_cmask(PCIDevice
*dev
)
511 pci_set_word(dev
->cmask
+ PCI_VENDOR_ID
, 0xffff);
512 pci_set_word(dev
->cmask
+ PCI_DEVICE_ID
, 0xffff);
513 dev
->cmask
[PCI_STATUS
] = PCI_STATUS_CAP_LIST
;
514 dev
->cmask
[PCI_REVISION_ID
] = 0xff;
515 dev
->cmask
[PCI_CLASS_PROG
] = 0xff;
516 pci_set_word(dev
->cmask
+ PCI_CLASS_DEVICE
, 0xffff);
517 dev
->cmask
[PCI_HEADER_TYPE
] = 0xff;
518 dev
->cmask
[PCI_CAPABILITY_LIST
] = 0xff;
521 static void pci_init_wmask(PCIDevice
*dev
)
523 int config_size
= pci_config_size(dev
);
525 dev
->wmask
[PCI_CACHE_LINE_SIZE
] = 0xff;
526 dev
->wmask
[PCI_INTERRUPT_LINE
] = 0xff;
527 pci_set_word(dev
->wmask
+ PCI_COMMAND
,
528 PCI_COMMAND_IO
| PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
|
529 PCI_COMMAND_INTX_DISABLE
);
531 memset(dev
->wmask
+ PCI_CONFIG_HEADER_SIZE
, 0xff,
532 config_size
- PCI_CONFIG_HEADER_SIZE
);
535 static void pci_init_wmask_bridge(PCIDevice
*d
)
537 /* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
538 PCI_SEC_LETENCY_TIMER */
539 memset(d
->wmask
+ PCI_PRIMARY_BUS
, 0xff, 4);
542 d
->wmask
[PCI_IO_BASE
] = PCI_IO_RANGE_MASK
& 0xff;
543 d
->wmask
[PCI_IO_LIMIT
] = PCI_IO_RANGE_MASK
& 0xff;
544 pci_set_word(d
->wmask
+ PCI_MEMORY_BASE
,
545 PCI_MEMORY_RANGE_MASK
& 0xffff);
546 pci_set_word(d
->wmask
+ PCI_MEMORY_LIMIT
,
547 PCI_MEMORY_RANGE_MASK
& 0xffff);
548 pci_set_word(d
->wmask
+ PCI_PREF_MEMORY_BASE
,
549 PCI_PREF_RANGE_MASK
& 0xffff);
550 pci_set_word(d
->wmask
+ PCI_PREF_MEMORY_LIMIT
,
551 PCI_PREF_RANGE_MASK
& 0xffff);
553 /* PCI_PREF_BASE_UPPER32 and PCI_PREF_LIMIT_UPPER32 */
554 memset(d
->wmask
+ PCI_PREF_BASE_UPPER32
, 0xff, 8);
556 pci_set_word(d
->wmask
+ PCI_BRIDGE_CONTROL
, 0xffff);
559 static void pci_config_alloc(PCIDevice
*pci_dev
)
561 int config_size
= pci_config_size(pci_dev
);
563 pci_dev
->config
= qemu_mallocz(config_size
);
564 pci_dev
->cmask
= qemu_mallocz(config_size
);
565 pci_dev
->wmask
= qemu_mallocz(config_size
);
566 pci_dev
->used
= qemu_mallocz(config_size
);
569 static void pci_config_free(PCIDevice
*pci_dev
)
571 qemu_free(pci_dev
->config
);
572 qemu_free(pci_dev
->cmask
);
573 qemu_free(pci_dev
->wmask
);
574 qemu_free(pci_dev
->used
);
577 /* -1 for devfn means auto assign */
578 static PCIDevice
*do_pci_register_device(PCIDevice
*pci_dev
, PCIBus
*bus
,
579 const char *name
, int devfn
,
580 PCIConfigReadFunc
*config_read
,
581 PCIConfigWriteFunc
*config_write
,
585 for(devfn
= bus
->devfn_min
; devfn
< ARRAY_SIZE(bus
->devices
);
587 if (!bus
->devices
[devfn
])
590 qemu_error("PCI: no devfn available for %s, all in use\n", name
);
593 } else if (bus
->devices
[devfn
]) {
594 qemu_error("PCI: devfn %d not available for %s, in use by %s\n", devfn
,
595 name
, bus
->devices
[devfn
]->name
);
599 pci_dev
->devfn
= devfn
;
600 pstrcpy(pci_dev
->name
, sizeof(pci_dev
->name
), name
);
601 pci_dev
->irq_state
= 0;
602 pci_config_alloc(pci_dev
);
604 header_type
&= ~PCI_HEADER_TYPE_MULTI_FUNCTION
;
605 if (header_type
== PCI_HEADER_TYPE_NORMAL
) {
606 pci_set_default_subsystem_id(pci_dev
);
608 pci_init_cmask(pci_dev
);
609 pci_init_wmask(pci_dev
);
610 if (header_type
== PCI_HEADER_TYPE_BRIDGE
) {
611 pci_init_wmask_bridge(pci_dev
);
615 config_read
= pci_default_read_config
;
617 config_write
= pci_default_write_config
;
618 pci_dev
->config_read
= config_read
;
619 pci_dev
->config_write
= config_write
;
620 bus
->devices
[devfn
] = pci_dev
;
621 pci_dev
->irq
= qemu_allocate_irqs(pci_set_irq
, pci_dev
, PCI_NUM_PINS
);
622 pci_dev
->version_id
= 2; /* Current pci device vmstate version */
626 PCIDevice
*pci_register_device(PCIBus
*bus
, const char *name
,
627 int instance_size
, int devfn
,
628 PCIConfigReadFunc
*config_read
,
629 PCIConfigWriteFunc
*config_write
)
633 pci_dev
= qemu_mallocz(instance_size
);
634 pci_dev
= do_pci_register_device(pci_dev
, bus
, name
, devfn
,
635 config_read
, config_write
,
636 PCI_HEADER_TYPE_NORMAL
);
637 if (pci_dev
== NULL
) {
638 hw_error("PCI: can't register device\n");
643 static target_phys_addr_t
pci_to_cpu_addr(PCIBus
*bus
,
644 target_phys_addr_t addr
)
646 return addr
+ bus
->mem_base
;
649 static void pci_unregister_io_regions(PCIDevice
*pci_dev
)
654 for(i
= 0; i
< PCI_NUM_REGIONS
; i
++) {
655 r
= &pci_dev
->io_regions
[i
];
656 if (!r
->size
|| r
->addr
== PCI_BAR_UNMAPPED
)
658 if (r
->type
== PCI_BASE_ADDRESS_SPACE_IO
) {
659 isa_unassign_ioport(r
->addr
, r
->filtered_size
);
661 cpu_register_physical_memory(pci_to_cpu_addr(pci_dev
->bus
,
669 static int pci_unregister_device(DeviceState
*dev
)
671 PCIDevice
*pci_dev
= DO_UPCAST(PCIDevice
, qdev
, dev
);
672 PCIDeviceInfo
*info
= DO_UPCAST(PCIDeviceInfo
, qdev
, dev
->info
);
676 ret
= info
->exit(pci_dev
);
680 pci_unregister_io_regions(pci_dev
);
682 qemu_free_irqs(pci_dev
->irq
);
683 pci_dev
->bus
->devices
[pci_dev
->devfn
] = NULL
;
684 pci_config_free(pci_dev
);
688 void pci_register_bar(PCIDevice
*pci_dev
, int region_num
,
689 pcibus_t size
, int type
,
690 PCIMapIORegionFunc
*map_func
)
696 if ((unsigned int)region_num
>= PCI_NUM_REGIONS
)
699 if (size
& (size
-1)) {
700 fprintf(stderr
, "ERROR: PCI region size must be pow2 "
701 "type=0x%x, size=0x%"FMT_PCIBUS
"\n", type
, size
);
705 r
= &pci_dev
->io_regions
[region_num
];
706 r
->addr
= PCI_BAR_UNMAPPED
;
708 r
->filtered_size
= size
;
710 r
->map_func
= map_func
;
713 addr
= pci_bar(pci_dev
, region_num
);
714 if (region_num
== PCI_ROM_SLOT
) {
715 /* ROM enable bit is writeable */
716 wmask
|= PCI_ROM_ADDRESS_ENABLE
;
718 pci_set_long(pci_dev
->config
+ addr
, type
);
719 if (!(r
->type
& PCI_BASE_ADDRESS_SPACE_IO
) &&
720 r
->type
& PCI_BASE_ADDRESS_MEM_TYPE_64
) {
721 pci_set_quad(pci_dev
->wmask
+ addr
, wmask
);
722 pci_set_quad(pci_dev
->cmask
+ addr
, ~0ULL);
724 pci_set_long(pci_dev
->wmask
+ addr
, wmask
& 0xffffffff);
725 pci_set_long(pci_dev
->cmask
+ addr
, 0xffffffff);
729 static uint32_t pci_config_get_io_base(PCIDevice
*d
,
730 uint32_t base
, uint32_t base_upper16
)
734 val
= ((uint32_t)d
->config
[base
] & PCI_IO_RANGE_MASK
) << 8;
735 if (d
->config
[base
] & PCI_IO_RANGE_TYPE_32
) {
736 val
|= (uint32_t)pci_get_word(d
->config
+ base_upper16
) << 16;
741 static pcibus_t
pci_config_get_memory_base(PCIDevice
*d
, uint32_t base
)
743 return ((pcibus_t
)pci_get_word(d
->config
+ base
) & PCI_MEMORY_RANGE_MASK
)
747 static pcibus_t
pci_config_get_pref_base(PCIDevice
*d
,
748 uint32_t base
, uint32_t upper
)
753 tmp
= (pcibus_t
)pci_get_word(d
->config
+ base
);
754 val
= (tmp
& PCI_PREF_RANGE_MASK
) << 16;
755 if (tmp
& PCI_PREF_RANGE_TYPE_64
) {
756 val
|= (pcibus_t
)pci_get_long(d
->config
+ upper
) << 32;
761 static pcibus_t
pci_bridge_get_base(PCIDevice
*bridge
, uint8_t type
)
764 if (type
& PCI_BASE_ADDRESS_SPACE_IO
) {
765 base
= pci_config_get_io_base(bridge
,
766 PCI_IO_BASE
, PCI_IO_BASE_UPPER16
);
768 if (type
& PCI_BASE_ADDRESS_MEM_PREFETCH
) {
769 base
= pci_config_get_pref_base(
770 bridge
, PCI_PREF_MEMORY_BASE
, PCI_PREF_BASE_UPPER32
);
772 base
= pci_config_get_memory_base(bridge
, PCI_MEMORY_BASE
);
779 static pcibus_t
pci_bridge_get_limit(PCIDevice
*bridge
, uint8_t type
)
782 if (type
& PCI_BASE_ADDRESS_SPACE_IO
) {
783 limit
= pci_config_get_io_base(bridge
,
784 PCI_IO_LIMIT
, PCI_IO_LIMIT_UPPER16
);
785 limit
|= 0xfff; /* PCI bridge spec 3.2.5.6. */
787 if (type
& PCI_BASE_ADDRESS_MEM_PREFETCH
) {
788 limit
= pci_config_get_pref_base(
789 bridge
, PCI_PREF_MEMORY_LIMIT
, PCI_PREF_LIMIT_UPPER32
);
791 limit
= pci_config_get_memory_base(bridge
, PCI_MEMORY_LIMIT
);
793 limit
|= 0xfffff; /* PCI bridge spec 3.2.5.{1, 8}. */
798 static void pci_bridge_filter(PCIDevice
*d
, pcibus_t
*addr
, pcibus_t
*size
,
801 pcibus_t base
= *addr
;
802 pcibus_t limit
= *addr
+ *size
- 1;
805 for (br
= d
->bus
->parent_dev
; br
; br
= br
->bus
->parent_dev
) {
806 uint16_t cmd
= pci_get_word(d
->config
+ PCI_COMMAND
);
808 if (type
& PCI_BASE_ADDRESS_SPACE_IO
) {
809 if (!(cmd
& PCI_COMMAND_IO
)) {
813 if (!(cmd
& PCI_COMMAND_MEMORY
)) {
818 base
= MAX(base
, pci_bridge_get_base(br
, type
));
819 limit
= MIN(limit
, pci_bridge_get_limit(br
, type
));
826 *size
= limit
- base
+ 1;
829 *addr
= PCI_BAR_UNMAPPED
;
833 static pcibus_t
pci_bar_address(PCIDevice
*d
,
834 int reg
, uint8_t type
, pcibus_t size
)
836 pcibus_t new_addr
, last_addr
;
837 int bar
= pci_bar(d
, reg
);
838 uint16_t cmd
= pci_get_word(d
->config
+ PCI_COMMAND
);
840 if (type
& PCI_BASE_ADDRESS_SPACE_IO
) {
841 if (!(cmd
& PCI_COMMAND_IO
)) {
842 return PCI_BAR_UNMAPPED
;
844 new_addr
= pci_get_long(d
->config
+ bar
) & ~(size
- 1);
845 last_addr
= new_addr
+ size
- 1;
846 /* NOTE: we have only 64K ioports on PC */
847 if (last_addr
<= new_addr
|| new_addr
== 0 || last_addr
> UINT16_MAX
) {
848 return PCI_BAR_UNMAPPED
;
853 if (!(cmd
& PCI_COMMAND_MEMORY
)) {
854 return PCI_BAR_UNMAPPED
;
856 if (type
& PCI_BASE_ADDRESS_MEM_TYPE_64
) {
857 new_addr
= pci_get_quad(d
->config
+ bar
);
859 new_addr
= pci_get_long(d
->config
+ bar
);
861 /* the ROM slot has a specific enable bit */
862 if (reg
== PCI_ROM_SLOT
&& !(new_addr
& PCI_ROM_ADDRESS_ENABLE
)) {
863 return PCI_BAR_UNMAPPED
;
865 new_addr
&= ~(size
- 1);
866 last_addr
= new_addr
+ size
- 1;
867 /* NOTE: we do not support wrapping */
868 /* XXX: as we cannot support really dynamic
869 mappings, we handle specific values as invalid
871 if (last_addr
<= new_addr
|| new_addr
== 0 ||
872 last_addr
== PCI_BAR_UNMAPPED
) {
873 return PCI_BAR_UNMAPPED
;
876 /* Now pcibus_t is 64bit.
877 * Check if 32 bit BAR wraps around explicitly.
878 * Without this, PC ide doesn't work well.
879 * TODO: remove this work around.
881 if (!(type
& PCI_BASE_ADDRESS_MEM_TYPE_64
) && last_addr
>= UINT32_MAX
) {
882 return PCI_BAR_UNMAPPED
;
886 * OS is allowed to set BAR beyond its addressable
887 * bits. For example, 32 bit OS can set 64bit bar
888 * to >4G. Check it. TODO: we might need to support
889 * it in the future for e.g. PAE.
891 if (last_addr
>= TARGET_PHYS_ADDR_MAX
) {
892 return PCI_BAR_UNMAPPED
;
898 static void pci_update_mappings(PCIDevice
*d
)
902 pcibus_t new_addr
, filtered_size
;
904 for(i
= 0; i
< PCI_NUM_REGIONS
; i
++) {
905 r
= &d
->io_regions
[i
];
907 /* this region isn't registered */
911 new_addr
= pci_bar_address(d
, i
, r
->type
, r
->size
);
913 /* bridge filtering */
914 filtered_size
= r
->size
;
915 if (new_addr
!= PCI_BAR_UNMAPPED
) {
916 pci_bridge_filter(d
, &new_addr
, &filtered_size
, r
->type
);
919 /* This bar isn't changed */
920 if (new_addr
== r
->addr
&& filtered_size
== r
->filtered_size
)
923 /* now do the real mapping */
924 if (r
->addr
!= PCI_BAR_UNMAPPED
) {
925 if (r
->type
& PCI_BASE_ADDRESS_SPACE_IO
) {
927 /* NOTE: specific hack for IDE in PC case:
928 only one byte must be mapped. */
929 class = pci_get_word(d
->config
+ PCI_CLASS_DEVICE
);
930 if (class == 0x0101 && r
->size
== 4) {
931 isa_unassign_ioport(r
->addr
+ 2, 1);
933 isa_unassign_ioport(r
->addr
, r
->filtered_size
);
936 cpu_register_physical_memory(pci_to_cpu_addr(d
->bus
, r
->addr
),
939 qemu_unregister_coalesced_mmio(r
->addr
, r
->filtered_size
);
943 r
->filtered_size
= filtered_size
;
944 if (r
->addr
!= PCI_BAR_UNMAPPED
) {
946 * TODO: currently almost all the map funcions assumes
947 * filtered_size == size and addr & ~(size - 1) == addr.
948 * However with bridge filtering, they aren't always true.
949 * Teach them such cases, such that filtered_size < size and
950 * addr & (size - 1) != 0.
952 if (r
->type
& PCI_BASE_ADDRESS_SPACE_IO
) {
953 r
->map_func(d
, i
, r
->addr
, r
->filtered_size
, r
->type
);
955 r
->map_func(d
, i
, pci_to_cpu_addr(d
->bus
, r
->addr
),
956 r
->filtered_size
, r
->type
);
962 static inline int pci_irq_disabled(PCIDevice
*d
)
964 return pci_get_word(d
->config
+ PCI_COMMAND
) & PCI_COMMAND_INTX_DISABLE
;
967 /* Called after interrupt disabled field update in config space,
968 * assert/deassert interrupts if necessary.
969 * Gets original interrupt disable bit value (before update). */
970 static void pci_update_irq_disabled(PCIDevice
*d
, int was_irq_disabled
)
972 int i
, disabled
= pci_irq_disabled(d
);
973 if (disabled
== was_irq_disabled
)
975 for (i
= 0; i
< PCI_NUM_PINS
; ++i
) {
976 int state
= pci_irq_state(d
, i
);
977 pci_change_irq_level(d
, i
, disabled
? -state
: state
);
981 uint32_t pci_default_read_config(PCIDevice
*d
,
982 uint32_t address
, int len
)
985 assert(len
== 1 || len
== 2 || len
== 4);
986 len
= MIN(len
, pci_config_size(d
) - address
);
987 memcpy(&val
, d
->config
+ address
, len
);
988 return le32_to_cpu(val
);
991 void pci_default_write_config(PCIDevice
*d
, uint32_t addr
, uint32_t val
, int l
)
993 int i
, was_irq_disabled
= pci_irq_disabled(d
);
994 uint32_t config_size
= pci_config_size(d
);
996 for (i
= 0; i
< l
&& addr
+ i
< config_size
; val
>>= 8, ++i
) {
997 uint8_t wmask
= d
->wmask
[addr
+ i
];
998 d
->config
[addr
+ i
] = (d
->config
[addr
+ i
] & ~wmask
) | (val
& wmask
);
1000 if (ranges_overlap(addr
, l
, PCI_BASE_ADDRESS_0
, 24) ||
1001 ranges_overlap(addr
, l
, PCI_ROM_ADDRESS
, 4) ||
1002 ranges_overlap(addr
, l
, PCI_ROM_ADDRESS1
, 4) ||
1003 range_covers_byte(addr
, l
, PCI_COMMAND
))
1004 pci_update_mappings(d
);
1006 if (range_covers_byte(addr
, l
, PCI_COMMAND
))
1007 pci_update_irq_disabled(d
, was_irq_disabled
);
1010 /***********************************************************/
1011 /* generic PCI irq support */
1013 /* 0 <= irq_num <= 3. level must be 0 or 1 */
1014 static void pci_set_irq(void *opaque
, int irq_num
, int level
)
1016 PCIDevice
*pci_dev
= opaque
;
1019 change
= level
- pci_irq_state(pci_dev
, irq_num
);
1023 pci_set_irq_state(pci_dev
, irq_num
, level
);
1024 pci_update_irq_status(pci_dev
);
1025 if (pci_irq_disabled(pci_dev
))
1027 pci_change_irq_level(pci_dev
, irq_num
, change
);
1030 /***********************************************************/
1031 /* monitor info on PCI */
1038 static const pci_class_desc pci_class_descriptions
[] =
1040 { 0x0100, "SCSI controller"},
1041 { 0x0101, "IDE controller"},
1042 { 0x0102, "Floppy controller"},
1043 { 0x0103, "IPI controller"},
1044 { 0x0104, "RAID controller"},
1045 { 0x0106, "SATA controller"},
1046 { 0x0107, "SAS controller"},
1047 { 0x0180, "Storage controller"},
1048 { 0x0200, "Ethernet controller"},
1049 { 0x0201, "Token Ring controller"},
1050 { 0x0202, "FDDI controller"},
1051 { 0x0203, "ATM controller"},
1052 { 0x0280, "Network controller"},
1053 { 0x0300, "VGA controller"},
1054 { 0x0301, "XGA controller"},
1055 { 0x0302, "3D controller"},
1056 { 0x0380, "Display controller"},
1057 { 0x0400, "Video controller"},
1058 { 0x0401, "Audio controller"},
1060 { 0x0480, "Multimedia controller"},
1061 { 0x0500, "RAM controller"},
1062 { 0x0501, "Flash controller"},
1063 { 0x0580, "Memory controller"},
1064 { 0x0600, "Host bridge"},
1065 { 0x0601, "ISA bridge"},
1066 { 0x0602, "EISA bridge"},
1067 { 0x0603, "MC bridge"},
1068 { 0x0604, "PCI bridge"},
1069 { 0x0605, "PCMCIA bridge"},
1070 { 0x0606, "NUBUS bridge"},
1071 { 0x0607, "CARDBUS bridge"},
1072 { 0x0608, "RACEWAY bridge"},
1073 { 0x0680, "Bridge"},
1074 { 0x0c03, "USB controller"},
1078 static void pci_info_device(PCIBus
*bus
, PCIDevice
*d
)
1080 Monitor
*mon
= cur_mon
;
1083 const pci_class_desc
*desc
;
1085 monitor_printf(mon
, " Bus %2d, device %3d, function %d:\n",
1086 pci_bus_num(d
->bus
),
1087 PCI_SLOT(d
->devfn
), PCI_FUNC(d
->devfn
));
1088 class = pci_get_word(d
->config
+ PCI_CLASS_DEVICE
);
1089 monitor_printf(mon
, " ");
1090 desc
= pci_class_descriptions
;
1091 while (desc
->desc
&& class != desc
->class)
1094 monitor_printf(mon
, "%s", desc
->desc
);
1096 monitor_printf(mon
, "Class %04x", class);
1098 monitor_printf(mon
, ": PCI device %04x:%04x\n",
1099 pci_get_word(d
->config
+ PCI_VENDOR_ID
),
1100 pci_get_word(d
->config
+ PCI_DEVICE_ID
));
1102 if (d
->config
[PCI_INTERRUPT_PIN
] != 0) {
1103 monitor_printf(mon
, " IRQ %d.\n",
1104 d
->config
[PCI_INTERRUPT_LINE
]);
1106 if (class == 0x0604) {
1110 monitor_printf(mon
, " BUS %d.\n", d
->config
[0x19]);
1111 monitor_printf(mon
, " secondary bus %d.\n",
1112 d
->config
[PCI_SECONDARY_BUS
]);
1113 monitor_printf(mon
, " subordinate bus %d.\n",
1114 d
->config
[PCI_SUBORDINATE_BUS
]);
1116 base
= pci_bridge_get_base(d
, PCI_BASE_ADDRESS_SPACE_IO
);
1117 limit
= pci_bridge_get_limit(d
, PCI_BASE_ADDRESS_SPACE_IO
);
1118 monitor_printf(mon
, " IO range [0x%04"PRIx64
", 0x%04"PRIx64
"]\n",
1121 base
= pci_bridge_get_base(d
, PCI_BASE_ADDRESS_SPACE_MEMORY
);
1122 limit
= pci_bridge_get_limit(d
, PCI_BASE_ADDRESS_SPACE_MEMORY
);
1124 " memory range [0x%08"PRIx64
", 0x%08"PRIx64
"]\n",
1127 base
= pci_bridge_get_base(d
, PCI_BASE_ADDRESS_SPACE_MEMORY
|
1128 PCI_BASE_ADDRESS_MEM_PREFETCH
);
1129 limit
= pci_bridge_get_limit(d
, PCI_BASE_ADDRESS_SPACE_MEMORY
|
1130 PCI_BASE_ADDRESS_MEM_PREFETCH
);
1131 monitor_printf(mon
, " prefetchable memory range "
1132 "[0x%08"PRIx64
", 0x%08"PRIx64
"]\n", base
, limit
);
1134 for(i
= 0;i
< PCI_NUM_REGIONS
; i
++) {
1135 r
= &d
->io_regions
[i
];
1137 monitor_printf(mon
, " BAR%d: ", i
);
1138 if (r
->type
& PCI_BASE_ADDRESS_SPACE_IO
) {
1139 monitor_printf(mon
, "I/O at 0x%04"FMT_PCIBUS
1140 " [0x%04"FMT_PCIBUS
"].\n",
1141 r
->addr
, r
->addr
+ r
->size
- 1);
1143 const char *type
= r
->type
& PCI_BASE_ADDRESS_MEM_TYPE_64
?
1144 "64 bit" : "32 bit";
1145 const char *prefetch
=
1146 r
->type
& PCI_BASE_ADDRESS_MEM_PREFETCH
?
1147 " prefetchable" : "";
1149 monitor_printf(mon
, "%s%s memory at 0x%08"FMT_PCIBUS
1150 " [0x%08"FMT_PCIBUS
"].\n",
1152 r
->addr
, r
->addr
+ r
->size
- 1);
1156 monitor_printf(mon
, " id \"%s\"\n", d
->qdev
.id
? d
->qdev
.id
: "");
1157 if (class == 0x0604 && d
->config
[0x19] != 0) {
1158 pci_for_each_device(bus
, d
->config
[0x19], pci_info_device
);
1162 static void pci_for_each_device_under_bus(PCIBus
*bus
,
1163 void (*fn
)(PCIBus
*b
, PCIDevice
*d
))
1168 for(devfn
= 0; devfn
< ARRAY_SIZE(bus
->devices
); devfn
++) {
1169 d
= bus
->devices
[devfn
];
1175 void pci_for_each_device(PCIBus
*bus
, int bus_num
,
1176 void (*fn
)(PCIBus
*b
, PCIDevice
*d
))
1178 bus
= pci_find_bus(bus
, bus_num
);
1181 pci_for_each_device_under_bus(bus
, fn
);
1185 void pci_info(Monitor
*mon
)
1187 struct PCIHostBus
*host
;
1188 QLIST_FOREACH(host
, &host_buses
, next
) {
1189 pci_for_each_device(host
->bus
, 0, pci_info_device
);
1193 static const char * const pci_nic_models
[] = {
1205 static const char * const pci_nic_names
[] = {
1217 /* Initialize a PCI NIC. */
1218 /* FIXME callers should check for failure, but don't */
1219 PCIDevice
*pci_nic_init(NICInfo
*nd
, const char *default_model
,
1220 const char *default_devaddr
)
1222 const char *devaddr
= nd
->devaddr
? nd
->devaddr
: default_devaddr
;
1229 i
= qemu_find_nic_model(nd
, pci_nic_models
, default_model
);
1233 bus
= pci_get_bus_devfn(&devfn
, devaddr
);
1235 qemu_error("Invalid PCI device address %s for device %s\n",
1236 devaddr
, pci_nic_names
[i
]);
1240 pci_dev
= pci_create(bus
, devfn
, pci_nic_names
[i
]);
1241 dev
= &pci_dev
->qdev
;
1243 dev
->id
= qemu_strdup(nd
->name
);
1244 qdev_set_nic_properties(dev
, nd
);
1245 if (qdev_init(dev
) < 0)
1250 PCIDevice
*pci_nic_init_nofail(NICInfo
*nd
, const char *default_model
,
1251 const char *default_devaddr
)
1255 if (qemu_show_nic_models(nd
->model
, pci_nic_models
))
1258 res
= pci_nic_init(nd
, default_model
, default_devaddr
);
1272 static void pci_bridge_update_mappings_fn(PCIBus
*b
, PCIDevice
*d
)
1274 pci_update_mappings(d
);
1277 static void pci_bridge_update_mappings(PCIBus
*b
)
1281 pci_for_each_device_under_bus(b
, pci_bridge_update_mappings_fn
);
1283 QLIST_FOREACH(child
, &b
->child
, sibling
) {
1284 pci_bridge_update_mappings(child
);
1288 static void pci_bridge_write_config(PCIDevice
*d
,
1289 uint32_t address
, uint32_t val
, int len
)
1291 pci_default_write_config(d
, address
, val
, len
);
1293 if (/* io base/limit */
1294 ranges_overlap(address
, len
, PCI_IO_BASE
, 2) ||
1296 /* memory base/limit, prefetchable base/limit and
1297 io base/limit upper 16 */
1298 ranges_overlap(address
, len
, PCI_MEMORY_BASE
, 20)) {
1299 pci_bridge_update_mappings(d
->bus
);
1303 PCIBus
*pci_find_bus(PCIBus
*bus
, int bus_num
)
1310 if (pci_bus_num(bus
) == bus_num
) {
1315 QLIST_FOREACH(sec
, &bus
->child
, sibling
) {
1317 if (!bus
->parent_dev
/* pci host bridge */
1318 || (pci_bus_num(sec
) <= bus_num
&&
1319 bus
->parent_dev
->config
[PCI_SUBORDINATE_BUS
])) {
1320 return pci_find_bus(sec
, bus_num
);
1327 PCIDevice
*pci_find_device(PCIBus
*bus
, int bus_num
, int slot
, int function
)
1329 bus
= pci_find_bus(bus
, bus_num
);
1334 return bus
->devices
[PCI_DEVFN(slot
, function
)];
1337 static int pci_bridge_initfn(PCIDevice
*dev
)
1339 PCIBridge
*s
= DO_UPCAST(PCIBridge
, dev
, dev
);
1341 pci_config_set_vendor_id(s
->dev
.config
, s
->vid
);
1342 pci_config_set_device_id(s
->dev
.config
, s
->did
);
1344 pci_set_word(dev
->config
+ PCI_STATUS
,
1345 PCI_STATUS_66MHZ
| PCI_STATUS_FAST_BACK
);
1346 pci_config_set_class(dev
->config
, PCI_CLASS_BRIDGE_PCI
);
1347 dev
->config
[PCI_HEADER_TYPE
] = PCI_HEADER_TYPE_BRIDGE
;
1348 pci_set_word(dev
->config
+ PCI_SEC_STATUS
,
1349 PCI_STATUS_66MHZ
| PCI_STATUS_FAST_BACK
);
1353 static int pci_bridge_exitfn(PCIDevice
*pci_dev
)
1355 PCIBridge
*s
= DO_UPCAST(PCIBridge
, dev
, pci_dev
);
1356 PCIBus
*bus
= &s
->bus
;
1357 pci_unregister_secondary_bus(bus
);
1361 PCIBus
*pci_bridge_init(PCIBus
*bus
, int devfn
, uint16_t vid
, uint16_t did
,
1362 pci_map_irq_fn map_irq
, const char *name
)
1367 dev
= pci_create(bus
, devfn
, "pci-bridge");
1368 qdev_prop_set_uint32(&dev
->qdev
, "vendorid", vid
);
1369 qdev_prop_set_uint32(&dev
->qdev
, "deviceid", did
);
1370 qdev_init_nofail(&dev
->qdev
);
1372 s
= DO_UPCAST(PCIBridge
, dev
, dev
);
1373 pci_register_secondary_bus(bus
, &s
->bus
, &s
->dev
, map_irq
, name
);
1377 PCIDevice
*pci_bridge_get_device(PCIBus
*bus
)
1379 return bus
->parent_dev
;
1382 static int pci_qdev_init(DeviceState
*qdev
, DeviceInfo
*base
)
1384 PCIDevice
*pci_dev
= (PCIDevice
*)qdev
;
1385 PCIDeviceInfo
*info
= container_of(base
, PCIDeviceInfo
, qdev
);
1389 /* initialize cap_present for pci_is_express() and pci_config_size() */
1390 if (info
->is_express
) {
1391 pci_dev
->cap_present
|= QEMU_PCI_CAP_EXPRESS
;
1394 bus
= FROM_QBUS(PCIBus
, qdev_get_parent_bus(qdev
));
1395 devfn
= pci_dev
->devfn
;
1396 pci_dev
= do_pci_register_device(pci_dev
, bus
, base
->name
, devfn
,
1397 info
->config_read
, info
->config_write
,
1399 if (pci_dev
== NULL
)
1401 rc
= info
->init(pci_dev
);
1406 if (pci_dev
->romfile
== NULL
&& info
->romfile
!= NULL
)
1407 pci_dev
->romfile
= qemu_strdup(info
->romfile
);
1408 pci_add_option_rom(pci_dev
);
1410 if (qdev
->hotplugged
)
1411 bus
->hotplug(pci_dev
, 1);
1415 static int pci_unplug_device(DeviceState
*qdev
)
1417 PCIDevice
*dev
= DO_UPCAST(PCIDevice
, qdev
, qdev
);
1419 dev
->bus
->hotplug(dev
, 0);
1423 void pci_qdev_register(PCIDeviceInfo
*info
)
1425 info
->qdev
.init
= pci_qdev_init
;
1426 info
->qdev
.unplug
= pci_unplug_device
;
1427 info
->qdev
.exit
= pci_unregister_device
;
1428 info
->qdev
.bus_info
= &pci_bus_info
;
1429 qdev_register(&info
->qdev
);
1432 void pci_qdev_register_many(PCIDeviceInfo
*info
)
1434 while (info
->qdev
.name
) {
1435 pci_qdev_register(info
);
1440 PCIDevice
*pci_create(PCIBus
*bus
, int devfn
, const char *name
)
1444 dev
= qdev_create(&bus
->qbus
, name
);
1445 qdev_prop_set_uint32(dev
, "addr", devfn
);
1446 return DO_UPCAST(PCIDevice
, qdev
, dev
);
1449 PCIDevice
*pci_create_simple(PCIBus
*bus
, int devfn
, const char *name
)
1451 PCIDevice
*dev
= pci_create(bus
, devfn
, name
);
1452 qdev_init_nofail(&dev
->qdev
);
1456 static int pci_find_space(PCIDevice
*pdev
, uint8_t size
)
1458 int config_size
= pci_config_size(pdev
);
1459 int offset
= PCI_CONFIG_HEADER_SIZE
;
1461 for (i
= PCI_CONFIG_HEADER_SIZE
; i
< config_size
; ++i
)
1464 else if (i
- offset
+ 1 == size
)
1469 static uint8_t pci_find_capability_list(PCIDevice
*pdev
, uint8_t cap_id
,
1474 if (!(pdev
->config
[PCI_STATUS
] & PCI_STATUS_CAP_LIST
))
1477 for (prev
= PCI_CAPABILITY_LIST
; (next
= pdev
->config
[prev
]);
1478 prev
= next
+ PCI_CAP_LIST_NEXT
)
1479 if (pdev
->config
[next
+ PCI_CAP_LIST_ID
] == cap_id
)
1487 static void pci_map_option_rom(PCIDevice
*pdev
, int region_num
, pcibus_t addr
, pcibus_t size
, int type
)
1489 cpu_register_physical_memory(addr
, size
, pdev
->rom_offset
);
1492 /* Add an option rom for the device */
1493 static int pci_add_option_rom(PCIDevice
*pdev
)
1501 if (strlen(pdev
->romfile
) == 0)
1504 path
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, pdev
->romfile
);
1506 path
= qemu_strdup(pdev
->romfile
);
1509 size
= get_image_size(path
);
1511 qemu_error("%s: failed to find romfile \"%s\"\n", __FUNCTION__
,
1515 if (size
& (size
- 1)) {
1516 size
= 1 << qemu_fls(size
);
1519 pdev
->rom_offset
= qemu_ram_alloc(size
);
1521 ptr
= qemu_get_ram_ptr(pdev
->rom_offset
);
1522 load_image(path
, ptr
);
1525 pci_register_bar(pdev
, PCI_ROM_SLOT
, size
,
1526 0, pci_map_option_rom
);
1531 /* Reserve space and add capability to the linked list in pci config space */
1532 int pci_add_capability(PCIDevice
*pdev
, uint8_t cap_id
, uint8_t size
)
1534 uint8_t offset
= pci_find_space(pdev
, size
);
1535 uint8_t *config
= pdev
->config
+ offset
;
1538 config
[PCI_CAP_LIST_ID
] = cap_id
;
1539 config
[PCI_CAP_LIST_NEXT
] = pdev
->config
[PCI_CAPABILITY_LIST
];
1540 pdev
->config
[PCI_CAPABILITY_LIST
] = offset
;
1541 pdev
->config
[PCI_STATUS
] |= PCI_STATUS_CAP_LIST
;
1542 memset(pdev
->used
+ offset
, 0xFF, size
);
1543 /* Make capability read-only by default */
1544 memset(pdev
->wmask
+ offset
, 0, size
);
1545 /* Check capability by default */
1546 memset(pdev
->cmask
+ offset
, 0xFF, size
);
1550 /* Unlink capability from the pci config space. */
1551 void pci_del_capability(PCIDevice
*pdev
, uint8_t cap_id
, uint8_t size
)
1553 uint8_t prev
, offset
= pci_find_capability_list(pdev
, cap_id
, &prev
);
1556 pdev
->config
[prev
] = pdev
->config
[offset
+ PCI_CAP_LIST_NEXT
];
1557 /* Make capability writeable again */
1558 memset(pdev
->wmask
+ offset
, 0xff, size
);
1559 /* Clear cmask as device-specific registers can't be checked */
1560 memset(pdev
->cmask
+ offset
, 0, size
);
1561 memset(pdev
->used
+ offset
, 0, size
);
1563 if (!pdev
->config
[PCI_CAPABILITY_LIST
])
1564 pdev
->config
[PCI_STATUS
] &= ~PCI_STATUS_CAP_LIST
;
1567 /* Reserve space for capability at a known offset (to call after load). */
1568 void pci_reserve_capability(PCIDevice
*pdev
, uint8_t offset
, uint8_t size
)
1570 memset(pdev
->used
+ offset
, 0xff, size
);
1573 uint8_t pci_find_capability(PCIDevice
*pdev
, uint8_t cap_id
)
1575 return pci_find_capability_list(pdev
, cap_id
, NULL
);
1578 static void pcibus_dev_print(Monitor
*mon
, DeviceState
*dev
, int indent
)
1580 PCIDevice
*d
= (PCIDevice
*)dev
;
1581 const pci_class_desc
*desc
;
1586 class = pci_get_word(d
->config
+ PCI_CLASS_DEVICE
);
1587 desc
= pci_class_descriptions
;
1588 while (desc
->desc
&& class != desc
->class)
1591 snprintf(ctxt
, sizeof(ctxt
), "%s", desc
->desc
);
1593 snprintf(ctxt
, sizeof(ctxt
), "Class %04x", class);
1596 monitor_printf(mon
, "%*sclass %s, addr %02x:%02x.%x, "
1597 "pci id %04x:%04x (sub %04x:%04x)\n",
1599 d
->config
[PCI_SECONDARY_BUS
],
1600 PCI_SLOT(d
->devfn
), PCI_FUNC(d
->devfn
),
1601 pci_get_word(d
->config
+ PCI_VENDOR_ID
),
1602 pci_get_word(d
->config
+ PCI_DEVICE_ID
),
1603 pci_get_word(d
->config
+ PCI_SUBSYSTEM_VENDOR_ID
),
1604 pci_get_word(d
->config
+ PCI_SUBSYSTEM_ID
));
1605 for (i
= 0; i
< PCI_NUM_REGIONS
; i
++) {
1606 r
= &d
->io_regions
[i
];
1609 monitor_printf(mon
, "%*sbar %d: %s at 0x%"FMT_PCIBUS
1610 " [0x%"FMT_PCIBUS
"]\n",
1612 i
, r
->type
& PCI_BASE_ADDRESS_SPACE_IO
? "i/o" : "mem",
1613 r
->addr
, r
->addr
+ r
->size
- 1);
1617 static PCIDeviceInfo bridge_info
= {
1618 .qdev
.name
= "pci-bridge",
1619 .qdev
.size
= sizeof(PCIBridge
),
1620 .init
= pci_bridge_initfn
,
1621 .exit
= pci_bridge_exitfn
,
1622 .config_write
= pci_bridge_write_config
,
1623 .qdev
.props
= (Property
[]) {
1624 DEFINE_PROP_HEX32("vendorid", PCIBridge
, vid
, 0),
1625 DEFINE_PROP_HEX32("deviceid", PCIBridge
, did
, 0),
1626 DEFINE_PROP_END_OF_LIST(),
1630 static void pci_register_devices(void)
1632 pci_qdev_register(&bridge_info
);
1635 device_init(pci_register_devices
)