4 * Copyright IBM, Corp. 2007
5 * Copyright (c) 2009 CodeSourcery
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Paul Brook <paul@codesourcery.com>
11 * This work is licensed under the terms of the GNU GPL, version 2. See
12 * the COPYING file in the top-level directory.
14 * Contributions after 2012-01-13 are licensed under the terms of the
15 * GNU GPL, version 2 or (at your option) any later version.
20 #include "standard-headers/linux/virtio_pci.h"
21 #include "hw/virtio/virtio.h"
22 #include "hw/virtio/virtio-blk.h"
23 #include "hw/virtio/virtio-net.h"
24 #include "hw/virtio/virtio-serial.h"
25 #include "hw/virtio/virtio-scsi.h"
26 #include "hw/virtio/virtio-balloon.h"
27 #include "hw/virtio/virtio-input.h"
28 #include "hw/pci/pci.h"
29 #include "qemu/error-report.h"
30 #include "hw/pci/msi.h"
31 #include "hw/pci/msix.h"
32 #include "hw/loader.h"
33 #include "sysemu/kvm.h"
34 #include "sysemu/block-backend.h"
35 #include "virtio-pci.h"
36 #include "qemu/range.h"
37 #include "hw/virtio/virtio-bus.h"
38 #include "qapi/visitor.h"
40 #define VIRTIO_PCI_REGION_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_present(dev))
42 #undef VIRTIO_PCI_CONFIG
44 /* The remaining space is defined by each driver as the per-driver
45 * configuration space */
46 #define VIRTIO_PCI_CONFIG_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_enabled(dev))
48 static void virtio_pci_bus_new(VirtioBusState
*bus
, size_t bus_size
,
52 /* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */
53 static inline VirtIOPCIProxy
*to_virtio_pci_proxy(DeviceState
*d
)
55 return container_of(d
, VirtIOPCIProxy
, pci_dev
.qdev
);
58 /* DeviceState to VirtIOPCIProxy. Note: used on datapath,
59 * be careful and test performance if you change this.
61 static inline VirtIOPCIProxy
*to_virtio_pci_proxy_fast(DeviceState
*d
)
63 return container_of(d
, VirtIOPCIProxy
, pci_dev
.qdev
);
66 static void virtio_pci_notify(DeviceState
*d
, uint16_t vector
)
68 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy_fast(d
);
70 if (msix_enabled(&proxy
->pci_dev
))
71 msix_notify(&proxy
->pci_dev
, vector
);
73 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
74 pci_set_irq(&proxy
->pci_dev
, vdev
->isr
& 1);
78 static void virtio_pci_save_config(DeviceState
*d
, QEMUFile
*f
)
80 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
81 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
83 pci_device_save(&proxy
->pci_dev
, f
);
84 msix_save(&proxy
->pci_dev
, f
);
85 if (msix_present(&proxy
->pci_dev
))
86 qemu_put_be16(f
, vdev
->config_vector
);
89 static void virtio_pci_save_queue(DeviceState
*d
, int n
, QEMUFile
*f
)
91 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
92 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
94 if (msix_present(&proxy
->pci_dev
))
95 qemu_put_be16(f
, virtio_queue_vector(vdev
, n
));
98 static int virtio_pci_load_config(DeviceState
*d
, QEMUFile
*f
)
100 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
101 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
104 ret
= pci_device_load(&proxy
->pci_dev
, f
);
108 msix_unuse_all_vectors(&proxy
->pci_dev
);
109 msix_load(&proxy
->pci_dev
, f
);
110 if (msix_present(&proxy
->pci_dev
)) {
111 qemu_get_be16s(f
, &vdev
->config_vector
);
113 vdev
->config_vector
= VIRTIO_NO_VECTOR
;
115 if (vdev
->config_vector
!= VIRTIO_NO_VECTOR
) {
116 return msix_vector_use(&proxy
->pci_dev
, vdev
->config_vector
);
121 static int virtio_pci_load_queue(DeviceState
*d
, int n
, QEMUFile
*f
)
123 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
124 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
127 if (msix_present(&proxy
->pci_dev
)) {
128 qemu_get_be16s(f
, &vector
);
130 vector
= VIRTIO_NO_VECTOR
;
132 virtio_queue_set_vector(vdev
, n
, vector
);
133 if (vector
!= VIRTIO_NO_VECTOR
) {
134 return msix_vector_use(&proxy
->pci_dev
, vector
);
139 #define QEMU_VIRTIO_PCI_QUEUE_MEM_MULT 0x1000
141 static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy
*proxy
,
142 int n
, bool assign
, bool set_handler
)
144 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
145 VirtQueue
*vq
= virtio_get_queue(vdev
, n
);
146 EventNotifier
*notifier
= virtio_queue_get_host_notifier(vq
);
147 bool legacy
= !(proxy
->flags
& VIRTIO_PCI_FLAG_DISABLE_LEGACY
);
148 bool modern
= !(proxy
->flags
& VIRTIO_PCI_FLAG_DISABLE_MODERN
);
149 MemoryRegion
*modern_mr
= &proxy
->notify
.mr
;
150 MemoryRegion
*legacy_mr
= &proxy
->bar
;
151 hwaddr modern_addr
= QEMU_VIRTIO_PCI_QUEUE_MEM_MULT
*
152 virtio_get_queue_index(vq
);
153 hwaddr legacy_addr
= VIRTIO_PCI_QUEUE_NOTIFY
;
157 r
= event_notifier_init(notifier
, 1);
159 error_report("%s: unable to init event notifier: %d",
163 virtio_queue_set_host_notifier_fd_handler(vq
, true, set_handler
);
165 memory_region_add_eventfd(modern_mr
, modern_addr
, 2,
169 memory_region_add_eventfd(legacy_mr
, legacy_addr
, 2,
174 memory_region_del_eventfd(modern_mr
, modern_addr
, 2,
178 memory_region_del_eventfd(legacy_mr
, legacy_addr
, 2,
181 virtio_queue_set_host_notifier_fd_handler(vq
, false, false);
182 event_notifier_cleanup(notifier
);
187 static void virtio_pci_start_ioeventfd(VirtIOPCIProxy
*proxy
)
189 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
192 if (!(proxy
->flags
& VIRTIO_PCI_FLAG_USE_IOEVENTFD
) ||
193 proxy
->ioeventfd_disabled
||
194 proxy
->ioeventfd_started
) {
198 for (n
= 0; n
< VIRTIO_QUEUE_MAX
; n
++) {
199 if (!virtio_queue_get_num(vdev
, n
)) {
203 r
= virtio_pci_set_host_notifier_internal(proxy
, n
, true, true);
208 proxy
->ioeventfd_started
= true;
213 if (!virtio_queue_get_num(vdev
, n
)) {
217 r
= virtio_pci_set_host_notifier_internal(proxy
, n
, false, false);
220 proxy
->ioeventfd_started
= false;
221 error_report("%s: failed. Fallback to a userspace (slower).", __func__
);
224 static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy
*proxy
)
226 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
230 if (!proxy
->ioeventfd_started
) {
234 for (n
= 0; n
< VIRTIO_QUEUE_MAX
; n
++) {
235 if (!virtio_queue_get_num(vdev
, n
)) {
239 r
= virtio_pci_set_host_notifier_internal(proxy
, n
, false, false);
242 proxy
->ioeventfd_started
= false;
245 static void virtio_ioport_write(void *opaque
, uint32_t addr
, uint32_t val
)
247 VirtIOPCIProxy
*proxy
= opaque
;
248 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
252 case VIRTIO_PCI_GUEST_FEATURES
:
253 /* Guest does not negotiate properly? We have to assume nothing. */
254 if (val
& (1 << VIRTIO_F_BAD_FEATURE
)) {
255 val
= virtio_bus_get_vdev_bad_features(&proxy
->bus
);
257 virtio_set_features(vdev
, val
);
259 case VIRTIO_PCI_QUEUE_PFN
:
260 pa
= (hwaddr
)val
<< VIRTIO_PCI_QUEUE_ADDR_SHIFT
;
262 virtio_pci_stop_ioeventfd(proxy
);
264 msix_unuse_all_vectors(&proxy
->pci_dev
);
267 virtio_queue_set_addr(vdev
, vdev
->queue_sel
, pa
);
269 case VIRTIO_PCI_QUEUE_SEL
:
270 if (val
< VIRTIO_QUEUE_MAX
)
271 vdev
->queue_sel
= val
;
273 case VIRTIO_PCI_QUEUE_NOTIFY
:
274 if (val
< VIRTIO_QUEUE_MAX
) {
275 virtio_queue_notify(vdev
, val
);
278 case VIRTIO_PCI_STATUS
:
279 if (!(val
& VIRTIO_CONFIG_S_DRIVER_OK
)) {
280 virtio_pci_stop_ioeventfd(proxy
);
283 virtio_set_status(vdev
, val
& 0xFF);
285 if (val
& VIRTIO_CONFIG_S_DRIVER_OK
) {
286 virtio_pci_start_ioeventfd(proxy
);
289 if (vdev
->status
== 0) {
291 msix_unuse_all_vectors(&proxy
->pci_dev
);
294 /* Linux before 2.6.34 drives the device without enabling
295 the PCI device bus master bit. Enable it automatically
296 for the guest. This is a PCI spec violation but so is
297 initiating DMA with bus master bit clear. */
298 if (val
== (VIRTIO_CONFIG_S_ACKNOWLEDGE
| VIRTIO_CONFIG_S_DRIVER
)) {
299 pci_default_write_config(&proxy
->pci_dev
, PCI_COMMAND
,
300 proxy
->pci_dev
.config
[PCI_COMMAND
] |
301 PCI_COMMAND_MASTER
, 1);
304 case VIRTIO_MSI_CONFIG_VECTOR
:
305 msix_vector_unuse(&proxy
->pci_dev
, vdev
->config_vector
);
306 /* Make it possible for guest to discover an error took place. */
307 if (msix_vector_use(&proxy
->pci_dev
, val
) < 0)
308 val
= VIRTIO_NO_VECTOR
;
309 vdev
->config_vector
= val
;
311 case VIRTIO_MSI_QUEUE_VECTOR
:
312 msix_vector_unuse(&proxy
->pci_dev
,
313 virtio_queue_vector(vdev
, vdev
->queue_sel
));
314 /* Make it possible for guest to discover an error took place. */
315 if (msix_vector_use(&proxy
->pci_dev
, val
) < 0)
316 val
= VIRTIO_NO_VECTOR
;
317 virtio_queue_set_vector(vdev
, vdev
->queue_sel
, val
);
320 error_report("%s: unexpected address 0x%x value 0x%x",
321 __func__
, addr
, val
);
326 static uint32_t virtio_ioport_read(VirtIOPCIProxy
*proxy
, uint32_t addr
)
328 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
329 uint32_t ret
= 0xFFFFFFFF;
332 case VIRTIO_PCI_HOST_FEATURES
:
333 ret
= vdev
->host_features
;
335 case VIRTIO_PCI_GUEST_FEATURES
:
336 ret
= vdev
->guest_features
;
338 case VIRTIO_PCI_QUEUE_PFN
:
339 ret
= virtio_queue_get_addr(vdev
, vdev
->queue_sel
)
340 >> VIRTIO_PCI_QUEUE_ADDR_SHIFT
;
342 case VIRTIO_PCI_QUEUE_NUM
:
343 ret
= virtio_queue_get_num(vdev
, vdev
->queue_sel
);
345 case VIRTIO_PCI_QUEUE_SEL
:
346 ret
= vdev
->queue_sel
;
348 case VIRTIO_PCI_STATUS
:
352 /* reading from the ISR also clears it. */
355 pci_irq_deassert(&proxy
->pci_dev
);
357 case VIRTIO_MSI_CONFIG_VECTOR
:
358 ret
= vdev
->config_vector
;
360 case VIRTIO_MSI_QUEUE_VECTOR
:
361 ret
= virtio_queue_vector(vdev
, vdev
->queue_sel
);
370 static uint64_t virtio_pci_config_read(void *opaque
, hwaddr addr
,
373 VirtIOPCIProxy
*proxy
= opaque
;
374 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
375 uint32_t config
= VIRTIO_PCI_CONFIG_SIZE(&proxy
->pci_dev
);
378 return virtio_ioport_read(proxy
, addr
);
384 val
= virtio_config_readb(vdev
, addr
);
387 val
= virtio_config_readw(vdev
, addr
);
388 if (virtio_is_big_endian(vdev
)) {
393 val
= virtio_config_readl(vdev
, addr
);
394 if (virtio_is_big_endian(vdev
)) {
402 static void virtio_pci_config_write(void *opaque
, hwaddr addr
,
403 uint64_t val
, unsigned size
)
405 VirtIOPCIProxy
*proxy
= opaque
;
406 uint32_t config
= VIRTIO_PCI_CONFIG_SIZE(&proxy
->pci_dev
);
407 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
409 virtio_ioport_write(proxy
, addr
, val
);
414 * Virtio-PCI is odd. Ioports are LE but config space is target native
419 virtio_config_writeb(vdev
, addr
, val
);
422 if (virtio_is_big_endian(vdev
)) {
425 virtio_config_writew(vdev
, addr
, val
);
428 if (virtio_is_big_endian(vdev
)) {
431 virtio_config_writel(vdev
, addr
, val
);
436 static const MemoryRegionOps virtio_pci_config_ops
= {
437 .read
= virtio_pci_config_read
,
438 .write
= virtio_pci_config_write
,
440 .min_access_size
= 1,
441 .max_access_size
= 4,
443 .endianness
= DEVICE_LITTLE_ENDIAN
,
446 /* Below are generic functions to do memcpy from/to an address space,
447 * without byteswaps, with input validation.
449 * As regular address_space_* APIs all do some kind of byteswap at least for
450 * some host/target combinations, we are forced to explicitly convert to a
451 * known-endianness integer value.
452 * It doesn't really matter which endian format to go through, so the code
453 * below selects the endian that causes the least amount of work on the given
456 * Note: host pointer must be aligned.
459 void virtio_address_space_write(AddressSpace
*as
, hwaddr addr
,
460 const uint8_t *buf
, int len
)
464 /* address_space_* APIs assume an aligned address.
465 * As address is under guest control, handle illegal values.
469 /* Make sure caller aligned buf properly */
470 assert(!(((uintptr_t)buf
) & (len
- 1)));
474 val
= pci_get_byte(buf
);
475 address_space_stb(as
, addr
, val
, MEMTXATTRS_UNSPECIFIED
, NULL
);
478 val
= pci_get_word(buf
);
479 address_space_stw_le(as
, addr
, val
, MEMTXATTRS_UNSPECIFIED
, NULL
);
482 val
= pci_get_long(buf
);
483 address_space_stl_le(as
, addr
, val
, MEMTXATTRS_UNSPECIFIED
, NULL
);
486 /* As length is under guest control, handle illegal values. */
492 virtio_address_space_read(AddressSpace
*as
, hwaddr addr
, uint8_t *buf
, int len
)
496 /* address_space_* APIs assume an aligned address.
497 * As address is under guest control, handle illegal values.
501 /* Make sure caller aligned buf properly */
502 assert(!(((uintptr_t)buf
) & (len
- 1)));
506 val
= address_space_ldub(as
, addr
, MEMTXATTRS_UNSPECIFIED
, NULL
);
507 pci_set_byte(buf
, val
);
510 val
= address_space_lduw_le(as
, addr
, MEMTXATTRS_UNSPECIFIED
, NULL
);
511 pci_set_word(buf
, val
);
514 val
= address_space_ldl_le(as
, addr
, MEMTXATTRS_UNSPECIFIED
, NULL
);
515 pci_set_long(buf
, val
);
518 /* As length is under guest control, handle illegal values. */
523 static void virtio_write_config(PCIDevice
*pci_dev
, uint32_t address
,
524 uint32_t val
, int len
)
526 VirtIOPCIProxy
*proxy
= DO_UPCAST(VirtIOPCIProxy
, pci_dev
, pci_dev
);
527 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
528 struct virtio_pci_cfg_cap
*cfg
;
530 pci_default_write_config(pci_dev
, address
, val
, len
);
532 if (range_covers_byte(address
, len
, PCI_COMMAND
) &&
533 !(pci_dev
->config
[PCI_COMMAND
] & PCI_COMMAND_MASTER
)) {
534 virtio_pci_stop_ioeventfd(proxy
);
535 virtio_set_status(vdev
, vdev
->status
& ~VIRTIO_CONFIG_S_DRIVER_OK
);
538 if (proxy
->config_cap
&&
539 ranges_overlap(address
, len
, proxy
->config_cap
+ offsetof(struct virtio_pci_cfg_cap
,
541 sizeof cfg
->pci_cfg_data
)) {
545 cfg
= (void *)(proxy
->pci_dev
.config
+ proxy
->config_cap
);
546 off
= le32_to_cpu(cfg
->cap
.offset
);
547 len
= le32_to_cpu(cfg
->cap
.length
);
549 if (len
== 1 || len
== 2 || len
== 4) {
550 assert(len
<= sizeof cfg
->pci_cfg_data
);
551 virtio_address_space_write(&proxy
->modern_as
, off
,
552 cfg
->pci_cfg_data
, len
);
557 static uint32_t virtio_read_config(PCIDevice
*pci_dev
,
558 uint32_t address
, int len
)
560 VirtIOPCIProxy
*proxy
= DO_UPCAST(VirtIOPCIProxy
, pci_dev
, pci_dev
);
561 struct virtio_pci_cfg_cap
*cfg
;
563 if (proxy
->config_cap
&&
564 ranges_overlap(address
, len
, proxy
->config_cap
+ offsetof(struct virtio_pci_cfg_cap
,
566 sizeof cfg
->pci_cfg_data
)) {
570 cfg
= (void *)(proxy
->pci_dev
.config
+ proxy
->config_cap
);
571 off
= le32_to_cpu(cfg
->cap
.offset
);
572 len
= le32_to_cpu(cfg
->cap
.length
);
574 if (len
== 1 || len
== 2 || len
== 4) {
575 assert(len
<= sizeof cfg
->pci_cfg_data
);
576 virtio_address_space_read(&proxy
->modern_as
, off
,
577 cfg
->pci_cfg_data
, len
);
581 return pci_default_read_config(pci_dev
, address
, len
);
584 static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy
*proxy
,
585 unsigned int queue_no
,
589 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
592 if (irqfd
->users
== 0) {
593 ret
= kvm_irqchip_add_msi_route(kvm_state
, msg
);
603 static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy
*proxy
,
606 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
607 if (--irqfd
->users
== 0) {
608 kvm_irqchip_release_virq(kvm_state
, irqfd
->virq
);
612 static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy
*proxy
,
613 unsigned int queue_no
,
616 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
617 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
618 VirtQueue
*vq
= virtio_get_queue(vdev
, queue_no
);
619 EventNotifier
*n
= virtio_queue_get_guest_notifier(vq
);
621 ret
= kvm_irqchip_add_irqfd_notifier_gsi(kvm_state
, n
, NULL
, irqfd
->virq
);
625 static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy
*proxy
,
626 unsigned int queue_no
,
629 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
630 VirtQueue
*vq
= virtio_get_queue(vdev
, queue_no
);
631 EventNotifier
*n
= virtio_queue_get_guest_notifier(vq
);
632 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
635 ret
= kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state
, n
, irqfd
->virq
);
639 static int kvm_virtio_pci_vector_use(VirtIOPCIProxy
*proxy
, int nvqs
)
641 PCIDevice
*dev
= &proxy
->pci_dev
;
642 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
643 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
648 for (queue_no
= 0; queue_no
< nvqs
; queue_no
++) {
649 if (!virtio_queue_get_num(vdev
, queue_no
)) {
652 vector
= virtio_queue_vector(vdev
, queue_no
);
653 if (vector
>= msix_nr_vectors_allocated(dev
)) {
656 msg
= msix_get_message(dev
, vector
);
657 ret
= kvm_virtio_pci_vq_vector_use(proxy
, queue_no
, vector
, msg
);
661 /* If guest supports masking, set up irqfd now.
662 * Otherwise, delay until unmasked in the frontend.
664 if (k
->guest_notifier_mask
) {
665 ret
= kvm_virtio_pci_irqfd_use(proxy
, queue_no
, vector
);
667 kvm_virtio_pci_vq_vector_release(proxy
, vector
);
675 while (--queue_no
>= 0) {
676 vector
= virtio_queue_vector(vdev
, queue_no
);
677 if (vector
>= msix_nr_vectors_allocated(dev
)) {
680 if (k
->guest_notifier_mask
) {
681 kvm_virtio_pci_irqfd_release(proxy
, queue_no
, vector
);
683 kvm_virtio_pci_vq_vector_release(proxy
, vector
);
688 static void kvm_virtio_pci_vector_release(VirtIOPCIProxy
*proxy
, int nvqs
)
690 PCIDevice
*dev
= &proxy
->pci_dev
;
691 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
694 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
696 for (queue_no
= 0; queue_no
< nvqs
; queue_no
++) {
697 if (!virtio_queue_get_num(vdev
, queue_no
)) {
700 vector
= virtio_queue_vector(vdev
, queue_no
);
701 if (vector
>= msix_nr_vectors_allocated(dev
)) {
704 /* If guest supports masking, clean up irqfd now.
705 * Otherwise, it was cleaned when masked in the frontend.
707 if (k
->guest_notifier_mask
) {
708 kvm_virtio_pci_irqfd_release(proxy
, queue_no
, vector
);
710 kvm_virtio_pci_vq_vector_release(proxy
, vector
);
714 static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy
*proxy
,
715 unsigned int queue_no
,
719 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
720 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
721 VirtQueue
*vq
= virtio_get_queue(vdev
, queue_no
);
722 EventNotifier
*n
= virtio_queue_get_guest_notifier(vq
);
726 if (proxy
->vector_irqfd
) {
727 irqfd
= &proxy
->vector_irqfd
[vector
];
728 if (irqfd
->msg
.data
!= msg
.data
|| irqfd
->msg
.address
!= msg
.address
) {
729 ret
= kvm_irqchip_update_msi_route(kvm_state
, irqfd
->virq
, msg
);
736 /* If guest supports masking, irqfd is already setup, unmask it.
737 * Otherwise, set it up now.
739 if (k
->guest_notifier_mask
) {
740 k
->guest_notifier_mask(vdev
, queue_no
, false);
741 /* Test after unmasking to avoid losing events. */
742 if (k
->guest_notifier_pending
&&
743 k
->guest_notifier_pending(vdev
, queue_no
)) {
744 event_notifier_set(n
);
747 ret
= kvm_virtio_pci_irqfd_use(proxy
, queue_no
, vector
);
752 static void virtio_pci_vq_vector_mask(VirtIOPCIProxy
*proxy
,
753 unsigned int queue_no
,
756 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
757 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
759 /* If guest supports masking, keep irqfd but mask it.
760 * Otherwise, clean it up now.
762 if (k
->guest_notifier_mask
) {
763 k
->guest_notifier_mask(vdev
, queue_no
, true);
765 kvm_virtio_pci_irqfd_release(proxy
, queue_no
, vector
);
769 static int virtio_pci_vector_unmask(PCIDevice
*dev
, unsigned vector
,
772 VirtIOPCIProxy
*proxy
= container_of(dev
, VirtIOPCIProxy
, pci_dev
);
773 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
774 VirtQueue
*vq
= virtio_vector_first_queue(vdev
, vector
);
775 int ret
, index
, unmasked
= 0;
778 index
= virtio_get_queue_index(vq
);
779 if (!virtio_queue_get_num(vdev
, index
)) {
782 if (index
< proxy
->nvqs_with_notifiers
) {
783 ret
= virtio_pci_vq_vector_unmask(proxy
, index
, vector
, msg
);
789 vq
= virtio_vector_next_queue(vq
);
795 vq
= virtio_vector_first_queue(vdev
, vector
);
796 while (vq
&& unmasked
>= 0) {
797 index
= virtio_get_queue_index(vq
);
798 if (index
< proxy
->nvqs_with_notifiers
) {
799 virtio_pci_vq_vector_mask(proxy
, index
, vector
);
802 vq
= virtio_vector_next_queue(vq
);
807 static void virtio_pci_vector_mask(PCIDevice
*dev
, unsigned vector
)
809 VirtIOPCIProxy
*proxy
= container_of(dev
, VirtIOPCIProxy
, pci_dev
);
810 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
811 VirtQueue
*vq
= virtio_vector_first_queue(vdev
, vector
);
815 index
= virtio_get_queue_index(vq
);
816 if (!virtio_queue_get_num(vdev
, index
)) {
819 if (index
< proxy
->nvqs_with_notifiers
) {
820 virtio_pci_vq_vector_mask(proxy
, index
, vector
);
822 vq
= virtio_vector_next_queue(vq
);
826 static void virtio_pci_vector_poll(PCIDevice
*dev
,
827 unsigned int vector_start
,
828 unsigned int vector_end
)
830 VirtIOPCIProxy
*proxy
= container_of(dev
, VirtIOPCIProxy
, pci_dev
);
831 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
832 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
835 EventNotifier
*notifier
;
838 for (queue_no
= 0; queue_no
< proxy
->nvqs_with_notifiers
; queue_no
++) {
839 if (!virtio_queue_get_num(vdev
, queue_no
)) {
842 vector
= virtio_queue_vector(vdev
, queue_no
);
843 if (vector
< vector_start
|| vector
>= vector_end
||
844 !msix_is_masked(dev
, vector
)) {
847 vq
= virtio_get_queue(vdev
, queue_no
);
848 notifier
= virtio_queue_get_guest_notifier(vq
);
849 if (k
->guest_notifier_pending
) {
850 if (k
->guest_notifier_pending(vdev
, queue_no
)) {
851 msix_set_pending(dev
, vector
);
853 } else if (event_notifier_test_and_clear(notifier
)) {
854 msix_set_pending(dev
, vector
);
859 static int virtio_pci_set_guest_notifier(DeviceState
*d
, int n
, bool assign
,
862 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
863 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
864 VirtioDeviceClass
*vdc
= VIRTIO_DEVICE_GET_CLASS(vdev
);
865 VirtQueue
*vq
= virtio_get_queue(vdev
, n
);
866 EventNotifier
*notifier
= virtio_queue_get_guest_notifier(vq
);
869 int r
= event_notifier_init(notifier
, 0);
873 virtio_queue_set_guest_notifier_fd_handler(vq
, true, with_irqfd
);
875 virtio_queue_set_guest_notifier_fd_handler(vq
, false, with_irqfd
);
876 event_notifier_cleanup(notifier
);
879 if (!msix_enabled(&proxy
->pci_dev
) && vdc
->guest_notifier_mask
) {
880 vdc
->guest_notifier_mask(vdev
, n
, !assign
);
886 static bool virtio_pci_query_guest_notifiers(DeviceState
*d
)
888 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
889 return msix_enabled(&proxy
->pci_dev
);
892 static int virtio_pci_set_guest_notifiers(DeviceState
*d
, int nvqs
, bool assign
)
894 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
895 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
896 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
898 bool with_irqfd
= msix_enabled(&proxy
->pci_dev
) &&
899 kvm_msi_via_irqfd_enabled();
901 nvqs
= MIN(nvqs
, VIRTIO_QUEUE_MAX
);
903 /* When deassigning, pass a consistent nvqs value
904 * to avoid leaking notifiers.
906 assert(assign
|| nvqs
== proxy
->nvqs_with_notifiers
);
908 proxy
->nvqs_with_notifiers
= nvqs
;
910 /* Must unset vector notifier while guest notifier is still assigned */
911 if ((proxy
->vector_irqfd
|| k
->guest_notifier_mask
) && !assign
) {
912 msix_unset_vector_notifiers(&proxy
->pci_dev
);
913 if (proxy
->vector_irqfd
) {
914 kvm_virtio_pci_vector_release(proxy
, nvqs
);
915 g_free(proxy
->vector_irqfd
);
916 proxy
->vector_irqfd
= NULL
;
920 for (n
= 0; n
< nvqs
; n
++) {
921 if (!virtio_queue_get_num(vdev
, n
)) {
925 r
= virtio_pci_set_guest_notifier(d
, n
, assign
, with_irqfd
);
931 /* Must set vector notifier after guest notifier has been assigned */
932 if ((with_irqfd
|| k
->guest_notifier_mask
) && assign
) {
934 proxy
->vector_irqfd
=
935 g_malloc0(sizeof(*proxy
->vector_irqfd
) *
936 msix_nr_vectors_allocated(&proxy
->pci_dev
));
937 r
= kvm_virtio_pci_vector_use(proxy
, nvqs
);
942 r
= msix_set_vector_notifiers(&proxy
->pci_dev
,
943 virtio_pci_vector_unmask
,
944 virtio_pci_vector_mask
,
945 virtio_pci_vector_poll
);
947 goto notifiers_error
;
956 kvm_virtio_pci_vector_release(proxy
, nvqs
);
960 /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
963 virtio_pci_set_guest_notifier(d
, n
, !assign
, with_irqfd
);
968 static int virtio_pci_set_host_notifier(DeviceState
*d
, int n
, bool assign
)
970 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
972 /* Stop using ioeventfd for virtqueue kick if the device starts using host
973 * notifiers. This makes it easy to avoid stepping on each others' toes.
975 proxy
->ioeventfd_disabled
= assign
;
977 virtio_pci_stop_ioeventfd(proxy
);
979 /* We don't need to start here: it's not needed because backend
980 * currently only stops on status change away from ok,
981 * reset, vmstop and such. If we do add code to start here,
982 * need to check vmstate, device state etc. */
983 return virtio_pci_set_host_notifier_internal(proxy
, n
, assign
, false);
986 static void virtio_pci_vmstate_change(DeviceState
*d
, bool running
)
988 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
989 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
992 /* Old QEMU versions did not set bus master enable on status write.
993 * Detect DRIVER set and enable it.
995 if ((proxy
->flags
& VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION
) &&
996 (vdev
->status
& VIRTIO_CONFIG_S_DRIVER
) &&
997 !(proxy
->pci_dev
.config
[PCI_COMMAND
] & PCI_COMMAND_MASTER
)) {
998 pci_default_write_config(&proxy
->pci_dev
, PCI_COMMAND
,
999 proxy
->pci_dev
.config
[PCI_COMMAND
] |
1000 PCI_COMMAND_MASTER
, 1);
1002 virtio_pci_start_ioeventfd(proxy
);
1004 virtio_pci_stop_ioeventfd(proxy
);
1008 #ifdef CONFIG_VIRTFS
1009 static void virtio_9p_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
1011 V9fsPCIState
*dev
= VIRTIO_9P_PCI(vpci_dev
);
1012 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1014 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1015 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
1018 static Property virtio_9p_pci_properties
[] = {
1019 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1020 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
1021 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 2),
1022 DEFINE_PROP_END_OF_LIST(),
1025 static void virtio_9p_pci_class_init(ObjectClass
*klass
, void *data
)
1027 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1028 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1029 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1031 k
->realize
= virtio_9p_pci_realize
;
1032 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1033 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_9P
;
1034 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1035 pcidev_k
->class_id
= 0x2;
1036 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
1037 dc
->props
= virtio_9p_pci_properties
;
1040 static void virtio_9p_pci_instance_init(Object
*obj
)
1042 V9fsPCIState
*dev
= VIRTIO_9P_PCI(obj
);
1044 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
1048 static const TypeInfo virtio_9p_pci_info
= {
1049 .name
= TYPE_VIRTIO_9P_PCI
,
1050 .parent
= TYPE_VIRTIO_PCI
,
1051 .instance_size
= sizeof(V9fsPCIState
),
1052 .instance_init
= virtio_9p_pci_instance_init
,
1053 .class_init
= virtio_9p_pci_class_init
,
1055 #endif /* CONFIG_VIRTFS */
1058 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
1061 static int virtio_pci_query_nvectors(DeviceState
*d
)
1063 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(d
);
1065 return proxy
->nvectors
;
1068 static int virtio_pci_add_mem_cap(VirtIOPCIProxy
*proxy
,
1069 struct virtio_pci_cap
*cap
)
1071 PCIDevice
*dev
= &proxy
->pci_dev
;
1074 offset
= pci_add_capability(dev
, PCI_CAP_ID_VNDR
, 0, cap
->cap_len
);
1077 assert(cap
->cap_len
>= sizeof *cap
);
1078 memcpy(dev
->config
+ offset
+ PCI_CAP_FLAGS
, &cap
->cap_len
,
1079 cap
->cap_len
- PCI_CAP_FLAGS
);
1084 static uint64_t virtio_pci_common_read(void *opaque
, hwaddr addr
,
1087 VirtIOPCIProxy
*proxy
= opaque
;
1088 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
1093 case VIRTIO_PCI_COMMON_DFSELECT
:
1094 val
= proxy
->dfselect
;
1096 case VIRTIO_PCI_COMMON_DF
:
1097 if (proxy
->dfselect
<= 1) {
1098 val
= (vdev
->host_features
& ~VIRTIO_LEGACY_FEATURES
) >>
1099 (32 * proxy
->dfselect
);
1102 case VIRTIO_PCI_COMMON_GFSELECT
:
1103 val
= proxy
->gfselect
;
1105 case VIRTIO_PCI_COMMON_GF
:
1106 if (proxy
->gfselect
< ARRAY_SIZE(proxy
->guest_features
)) {
1107 val
= proxy
->guest_features
[proxy
->gfselect
];
1110 case VIRTIO_PCI_COMMON_MSIX
:
1111 val
= vdev
->config_vector
;
1113 case VIRTIO_PCI_COMMON_NUMQ
:
1114 for (i
= 0; i
< VIRTIO_QUEUE_MAX
; ++i
) {
1115 if (virtio_queue_get_num(vdev
, i
)) {
1120 case VIRTIO_PCI_COMMON_STATUS
:
1123 case VIRTIO_PCI_COMMON_CFGGENERATION
:
1124 val
= vdev
->generation
;
1126 case VIRTIO_PCI_COMMON_Q_SELECT
:
1127 val
= vdev
->queue_sel
;
1129 case VIRTIO_PCI_COMMON_Q_SIZE
:
1130 val
= virtio_queue_get_num(vdev
, vdev
->queue_sel
);
1132 case VIRTIO_PCI_COMMON_Q_MSIX
:
1133 val
= virtio_queue_vector(vdev
, vdev
->queue_sel
);
1135 case VIRTIO_PCI_COMMON_Q_ENABLE
:
1136 val
= proxy
->vqs
[vdev
->queue_sel
].enabled
;
1138 case VIRTIO_PCI_COMMON_Q_NOFF
:
1139 /* Simply map queues in order */
1140 val
= vdev
->queue_sel
;
1142 case VIRTIO_PCI_COMMON_Q_DESCLO
:
1143 val
= proxy
->vqs
[vdev
->queue_sel
].desc
[0];
1145 case VIRTIO_PCI_COMMON_Q_DESCHI
:
1146 val
= proxy
->vqs
[vdev
->queue_sel
].desc
[1];
1148 case VIRTIO_PCI_COMMON_Q_AVAILLO
:
1149 val
= proxy
->vqs
[vdev
->queue_sel
].avail
[0];
1151 case VIRTIO_PCI_COMMON_Q_AVAILHI
:
1152 val
= proxy
->vqs
[vdev
->queue_sel
].avail
[1];
1154 case VIRTIO_PCI_COMMON_Q_USEDLO
:
1155 val
= proxy
->vqs
[vdev
->queue_sel
].used
[0];
1157 case VIRTIO_PCI_COMMON_Q_USEDHI
:
1158 val
= proxy
->vqs
[vdev
->queue_sel
].used
[1];
1167 static void virtio_pci_common_write(void *opaque
, hwaddr addr
,
1168 uint64_t val
, unsigned size
)
1170 VirtIOPCIProxy
*proxy
= opaque
;
1171 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
1174 case VIRTIO_PCI_COMMON_DFSELECT
:
1175 proxy
->dfselect
= val
;
1177 case VIRTIO_PCI_COMMON_GFSELECT
:
1178 proxy
->gfselect
= val
;
1180 case VIRTIO_PCI_COMMON_GF
:
1181 if (proxy
->gfselect
< ARRAY_SIZE(proxy
->guest_features
)) {
1182 proxy
->guest_features
[proxy
->gfselect
] = val
;
1183 virtio_set_features(vdev
,
1184 (((uint64_t)proxy
->guest_features
[1]) << 32) |
1185 proxy
->guest_features
[0]);
1188 case VIRTIO_PCI_COMMON_MSIX
:
1189 msix_vector_unuse(&proxy
->pci_dev
, vdev
->config_vector
);
1190 /* Make it possible for guest to discover an error took place. */
1191 if (msix_vector_use(&proxy
->pci_dev
, val
) < 0) {
1192 val
= VIRTIO_NO_VECTOR
;
1194 vdev
->config_vector
= val
;
1196 case VIRTIO_PCI_COMMON_STATUS
:
1197 if (!(val
& VIRTIO_CONFIG_S_DRIVER_OK
)) {
1198 virtio_pci_stop_ioeventfd(proxy
);
1201 virtio_set_status(vdev
, val
& 0xFF);
1203 if (val
& VIRTIO_CONFIG_S_DRIVER_OK
) {
1204 virtio_pci_start_ioeventfd(proxy
);
1207 if (vdev
->status
== 0) {
1209 msix_unuse_all_vectors(&proxy
->pci_dev
);
1213 case VIRTIO_PCI_COMMON_Q_SELECT
:
1214 if (val
< VIRTIO_QUEUE_MAX
) {
1215 vdev
->queue_sel
= val
;
1218 case VIRTIO_PCI_COMMON_Q_SIZE
:
1219 proxy
->vqs
[vdev
->queue_sel
].num
= val
;
1221 case VIRTIO_PCI_COMMON_Q_MSIX
:
1222 msix_vector_unuse(&proxy
->pci_dev
,
1223 virtio_queue_vector(vdev
, vdev
->queue_sel
));
1224 /* Make it possible for guest to discover an error took place. */
1225 if (msix_vector_use(&proxy
->pci_dev
, val
) < 0) {
1226 val
= VIRTIO_NO_VECTOR
;
1228 virtio_queue_set_vector(vdev
, vdev
->queue_sel
, val
);
1230 case VIRTIO_PCI_COMMON_Q_ENABLE
:
1231 /* TODO: need a way to put num back on reset. */
1232 virtio_queue_set_num(vdev
, vdev
->queue_sel
,
1233 proxy
->vqs
[vdev
->queue_sel
].num
);
1234 virtio_queue_set_rings(vdev
, vdev
->queue_sel
,
1235 ((uint64_t)proxy
->vqs
[vdev
->queue_sel
].desc
[1]) << 32 |
1236 proxy
->vqs
[vdev
->queue_sel
].desc
[0],
1237 ((uint64_t)proxy
->vqs
[vdev
->queue_sel
].avail
[1]) << 32 |
1238 proxy
->vqs
[vdev
->queue_sel
].avail
[0],
1239 ((uint64_t)proxy
->vqs
[vdev
->queue_sel
].used
[1]) << 32 |
1240 proxy
->vqs
[vdev
->queue_sel
].used
[0]);
1242 case VIRTIO_PCI_COMMON_Q_DESCLO
:
1243 proxy
->vqs
[vdev
->queue_sel
].desc
[0] = val
;
1245 case VIRTIO_PCI_COMMON_Q_DESCHI
:
1246 proxy
->vqs
[vdev
->queue_sel
].desc
[1] = val
;
1248 case VIRTIO_PCI_COMMON_Q_AVAILLO
:
1249 proxy
->vqs
[vdev
->queue_sel
].avail
[0] = val
;
1251 case VIRTIO_PCI_COMMON_Q_AVAILHI
:
1252 proxy
->vqs
[vdev
->queue_sel
].avail
[1] = val
;
1254 case VIRTIO_PCI_COMMON_Q_USEDLO
:
1255 proxy
->vqs
[vdev
->queue_sel
].used
[0] = val
;
1257 case VIRTIO_PCI_COMMON_Q_USEDHI
:
1258 proxy
->vqs
[vdev
->queue_sel
].used
[1] = val
;
1266 static uint64_t virtio_pci_notify_read(void *opaque
, hwaddr addr
,
1272 static void virtio_pci_notify_write(void *opaque
, hwaddr addr
,
1273 uint64_t val
, unsigned size
)
1275 VirtIODevice
*vdev
= opaque
;
1276 unsigned queue
= addr
/ QEMU_VIRTIO_PCI_QUEUE_MEM_MULT
;
1278 if (queue
< VIRTIO_QUEUE_MAX
) {
1279 virtio_queue_notify(vdev
, queue
);
1283 static uint64_t virtio_pci_isr_read(void *opaque
, hwaddr addr
,
1286 VirtIOPCIProxy
*proxy
= opaque
;
1287 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
1288 uint64_t val
= vdev
->isr
;
1291 pci_irq_deassert(&proxy
->pci_dev
);
1296 static void virtio_pci_isr_write(void *opaque
, hwaddr addr
,
1297 uint64_t val
, unsigned size
)
1301 static uint64_t virtio_pci_device_read(void *opaque
, hwaddr addr
,
1304 VirtIODevice
*vdev
= opaque
;
1309 val
= virtio_config_modern_readb(vdev
, addr
);
1312 val
= virtio_config_modern_readw(vdev
, addr
);
1315 val
= virtio_config_modern_readl(vdev
, addr
);
1321 static void virtio_pci_device_write(void *opaque
, hwaddr addr
,
1322 uint64_t val
, unsigned size
)
1324 VirtIODevice
*vdev
= opaque
;
1327 virtio_config_modern_writeb(vdev
, addr
, val
);
1330 virtio_config_modern_writew(vdev
, addr
, val
);
1333 virtio_config_modern_writel(vdev
, addr
, val
);
1338 static void virtio_pci_modern_regions_init(VirtIOPCIProxy
*proxy
)
1340 static const MemoryRegionOps common_ops
= {
1341 .read
= virtio_pci_common_read
,
1342 .write
= virtio_pci_common_write
,
1344 .min_access_size
= 1,
1345 .max_access_size
= 4,
1347 .endianness
= DEVICE_LITTLE_ENDIAN
,
1349 static const MemoryRegionOps isr_ops
= {
1350 .read
= virtio_pci_isr_read
,
1351 .write
= virtio_pci_isr_write
,
1353 .min_access_size
= 1,
1354 .max_access_size
= 4,
1356 .endianness
= DEVICE_LITTLE_ENDIAN
,
1358 static const MemoryRegionOps device_ops
= {
1359 .read
= virtio_pci_device_read
,
1360 .write
= virtio_pci_device_write
,
1362 .min_access_size
= 1,
1363 .max_access_size
= 4,
1365 .endianness
= DEVICE_LITTLE_ENDIAN
,
1367 static const MemoryRegionOps notify_ops
= {
1368 .read
= virtio_pci_notify_read
,
1369 .write
= virtio_pci_notify_write
,
1371 .min_access_size
= 1,
1372 .max_access_size
= 4,
1374 .endianness
= DEVICE_LITTLE_ENDIAN
,
1377 memory_region_init_io(&proxy
->common
.mr
, OBJECT(proxy
),
1380 "virtio-pci-common",
1381 proxy
->common
.size
);
1383 memory_region_init_io(&proxy
->isr
.mr
, OBJECT(proxy
),
1389 memory_region_init_io(&proxy
->device
.mr
, OBJECT(proxy
),
1391 virtio_bus_get_device(&proxy
->bus
),
1392 "virtio-pci-device",
1393 proxy
->device
.size
);
1395 memory_region_init_io(&proxy
->notify
.mr
, OBJECT(proxy
),
1397 virtio_bus_get_device(&proxy
->bus
),
1398 "virtio-pci-notify",
1399 proxy
->notify
.size
);
1402 static void virtio_pci_modern_region_map(VirtIOPCIProxy
*proxy
,
1403 VirtIOPCIRegion
*region
,
1404 struct virtio_pci_cap
*cap
)
1406 memory_region_add_subregion(&proxy
->modern_bar
,
1410 cap
->cfg_type
= region
->type
;
1411 cap
->bar
= proxy
->modern_mem_bar
;
1412 cap
->offset
= cpu_to_le32(region
->offset
);
1413 cap
->length
= cpu_to_le32(region
->size
);
1414 virtio_pci_add_mem_cap(proxy
, cap
);
1417 static void virtio_pci_modern_region_unmap(VirtIOPCIProxy
*proxy
,
1418 VirtIOPCIRegion
*region
)
1420 memory_region_del_subregion(&proxy
->modern_bar
,
1424 /* This is called by virtio-bus just after the device is plugged. */
1425 static void virtio_pci_device_plugged(DeviceState
*d
, Error
**errp
)
1427 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(d
);
1428 VirtioBusState
*bus
= &proxy
->bus
;
1429 bool legacy
= !(proxy
->flags
& VIRTIO_PCI_FLAG_DISABLE_LEGACY
);
1430 bool modern
= !(proxy
->flags
& VIRTIO_PCI_FLAG_DISABLE_MODERN
);
1433 VirtIODevice
*vdev
= virtio_bus_get_device(&proxy
->bus
);
1435 config
= proxy
->pci_dev
.config
;
1436 if (proxy
->class_code
) {
1437 pci_config_set_class(config
, proxy
->class_code
);
1441 /* legacy and transitional */
1442 pci_set_word(config
+ PCI_SUBSYSTEM_VENDOR_ID
,
1443 pci_get_word(config
+ PCI_VENDOR_ID
));
1444 pci_set_word(config
+ PCI_SUBSYSTEM_ID
, virtio_bus_get_vdev_id(bus
));
1446 /* pure virtio-1.0 */
1447 pci_set_word(config
+ PCI_VENDOR_ID
,
1448 PCI_VENDOR_ID_REDHAT_QUMRANET
);
1449 pci_set_word(config
+ PCI_DEVICE_ID
,
1450 0x1040 + virtio_bus_get_vdev_id(bus
));
1451 pci_config_set_revision(config
, 1);
1453 config
[PCI_INTERRUPT_PIN
] = 1;
1457 struct virtio_pci_cap cap
= {
1458 .cap_len
= sizeof cap
,
1460 struct virtio_pci_notify_cap notify
= {
1461 .cap
.cap_len
= sizeof notify
,
1462 .notify_off_multiplier
=
1463 cpu_to_le32(QEMU_VIRTIO_PCI_QUEUE_MEM_MULT
),
1465 struct virtio_pci_cfg_cap cfg
= {
1466 .cap
.cap_len
= sizeof cfg
,
1467 .cap
.cfg_type
= VIRTIO_PCI_CAP_PCI_CFG
,
1469 struct virtio_pci_cfg_cap
*cfg_mask
;
1471 /* TODO: add io access for speed */
1473 virtio_add_feature(&vdev
->host_features
, VIRTIO_F_VERSION_1
);
1474 virtio_pci_modern_regions_init(proxy
);
1475 virtio_pci_modern_region_map(proxy
, &proxy
->common
, &cap
);
1476 virtio_pci_modern_region_map(proxy
, &proxy
->isr
, &cap
);
1477 virtio_pci_modern_region_map(proxy
, &proxy
->device
, &cap
);
1478 virtio_pci_modern_region_map(proxy
, &proxy
->notify
, ¬ify
.cap
);
1480 pci_register_bar(&proxy
->pci_dev
, proxy
->modern_mem_bar
,
1481 PCI_BASE_ADDRESS_SPACE_MEMORY
|
1482 PCI_BASE_ADDRESS_MEM_PREFETCH
|
1483 PCI_BASE_ADDRESS_MEM_TYPE_64
,
1484 &proxy
->modern_bar
);
1486 proxy
->config_cap
= virtio_pci_add_mem_cap(proxy
, &cfg
.cap
);
1487 cfg_mask
= (void *)(proxy
->pci_dev
.wmask
+ proxy
->config_cap
);
1488 pci_set_byte(&cfg_mask
->cap
.bar
, ~0x0);
1489 pci_set_long((uint8_t *)&cfg_mask
->cap
.offset
, ~0x0);
1490 pci_set_long((uint8_t *)&cfg_mask
->cap
.length
, ~0x0);
1491 pci_set_long(cfg_mask
->pci_cfg_data
, ~0x0);
1494 if (proxy
->nvectors
&&
1495 msix_init_exclusive_bar(&proxy
->pci_dev
, proxy
->nvectors
,
1497 error_report("unable to init msix vectors to %" PRIu32
,
1499 proxy
->nvectors
= 0;
1502 proxy
->pci_dev
.config_write
= virtio_write_config
;
1503 proxy
->pci_dev
.config_read
= virtio_read_config
;
1506 size
= VIRTIO_PCI_REGION_SIZE(&proxy
->pci_dev
)
1507 + virtio_bus_get_vdev_config_len(bus
);
1508 size
= pow2ceil(size
);
1510 memory_region_init_io(&proxy
->bar
, OBJECT(proxy
),
1511 &virtio_pci_config_ops
,
1512 proxy
, "virtio-pci", size
);
1514 pci_register_bar(&proxy
->pci_dev
, proxy
->legacy_io_bar
,
1515 PCI_BASE_ADDRESS_SPACE_IO
, &proxy
->bar
);
1518 if (!kvm_has_many_ioeventfds()) {
1519 proxy
->flags
&= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD
;
1522 virtio_add_feature(&vdev
->host_features
, VIRTIO_F_BAD_FEATURE
);
1525 static void virtio_pci_device_unplugged(DeviceState
*d
)
1527 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(d
);
1528 bool modern
= !(proxy
->flags
& VIRTIO_PCI_FLAG_DISABLE_MODERN
);
1530 virtio_pci_stop_ioeventfd(proxy
);
1533 virtio_pci_modern_region_unmap(proxy
, &proxy
->common
);
1534 virtio_pci_modern_region_unmap(proxy
, &proxy
->isr
);
1535 virtio_pci_modern_region_unmap(proxy
, &proxy
->device
);
1536 virtio_pci_modern_region_unmap(proxy
, &proxy
->notify
);
1540 static void virtio_pci_realize(PCIDevice
*pci_dev
, Error
**errp
)
1542 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(pci_dev
);
1543 VirtioPCIClass
*k
= VIRTIO_PCI_GET_CLASS(pci_dev
);
1546 * virtio pci bar layout used by default.
1547 * subclasses can re-arrange things if needed.
1549 * region 0 -- virtio legacy io bar
1550 * region 1 -- msi-x bar
1551 * region 4+5 -- virtio modern memory (64bit) bar
1554 proxy
->legacy_io_bar
= 0;
1555 proxy
->msix_bar
= 1;
1556 proxy
->modern_mem_bar
= 4;
1558 proxy
->common
.offset
= 0x0;
1559 proxy
->common
.size
= 0x1000;
1560 proxy
->common
.type
= VIRTIO_PCI_CAP_COMMON_CFG
;
1562 proxy
->isr
.offset
= 0x1000;
1563 proxy
->isr
.size
= 0x1000;
1564 proxy
->isr
.type
= VIRTIO_PCI_CAP_ISR_CFG
;
1566 proxy
->device
.offset
= 0x2000;
1567 proxy
->device
.size
= 0x1000;
1568 proxy
->device
.type
= VIRTIO_PCI_CAP_DEVICE_CFG
;
1570 proxy
->notify
.offset
= 0x3000;
1571 proxy
->notify
.size
=
1572 QEMU_VIRTIO_PCI_QUEUE_MEM_MULT
* VIRTIO_QUEUE_MAX
;
1573 proxy
->notify
.type
= VIRTIO_PCI_CAP_NOTIFY_CFG
;
1575 /* subclasses can enforce modern, so do this unconditionally */
1576 memory_region_init(&proxy
->modern_bar
, OBJECT(proxy
), "virtio-pci",
1577 2 * QEMU_VIRTIO_PCI_QUEUE_MEM_MULT
*
1580 memory_region_init_alias(&proxy
->modern_cfg
,
1585 memory_region_size(&proxy
->modern_bar
));
1587 address_space_init(&proxy
->modern_as
, &proxy
->modern_cfg
, "virtio-pci-cfg-as");
1589 virtio_pci_bus_new(&proxy
->bus
, sizeof(proxy
->bus
), proxy
);
1591 k
->realize(proxy
, errp
);
1595 static void virtio_pci_exit(PCIDevice
*pci_dev
)
1597 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(pci_dev
);
1599 msix_uninit_exclusive_bar(pci_dev
);
1600 address_space_destroy(&proxy
->modern_as
);
1603 static void virtio_pci_reset(DeviceState
*qdev
)
1605 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(qdev
);
1606 VirtioBusState
*bus
= VIRTIO_BUS(&proxy
->bus
);
1607 virtio_pci_stop_ioeventfd(proxy
);
1608 virtio_bus_reset(bus
);
1609 msix_unuse_all_vectors(&proxy
->pci_dev
);
1612 static Property virtio_pci_properties
[] = {
1613 DEFINE_PROP_BIT("virtio-pci-bus-master-bug-migration", VirtIOPCIProxy
, flags
,
1614 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT
, false),
1615 DEFINE_PROP_BIT("disable-legacy", VirtIOPCIProxy
, flags
,
1616 VIRTIO_PCI_FLAG_DISABLE_LEGACY_BIT
, false),
1617 DEFINE_PROP_BIT("disable-modern", VirtIOPCIProxy
, flags
,
1618 VIRTIO_PCI_FLAG_DISABLE_MODERN_BIT
, true),
1619 DEFINE_PROP_END_OF_LIST(),
1622 static void virtio_pci_class_init(ObjectClass
*klass
, void *data
)
1624 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1625 PCIDeviceClass
*k
= PCI_DEVICE_CLASS(klass
);
1627 dc
->props
= virtio_pci_properties
;
1628 k
->realize
= virtio_pci_realize
;
1629 k
->exit
= virtio_pci_exit
;
1630 k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1631 k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1632 k
->class_id
= PCI_CLASS_OTHERS
;
1633 dc
->reset
= virtio_pci_reset
;
1636 static const TypeInfo virtio_pci_info
= {
1637 .name
= TYPE_VIRTIO_PCI
,
1638 .parent
= TYPE_PCI_DEVICE
,
1639 .instance_size
= sizeof(VirtIOPCIProxy
),
1640 .class_init
= virtio_pci_class_init
,
1641 .class_size
= sizeof(VirtioPCIClass
),
1645 /* virtio-blk-pci */
1647 static Property virtio_blk_pci_properties
[] = {
1648 DEFINE_PROP_UINT32("class", VirtIOPCIProxy
, class_code
, 0),
1649 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1650 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
1651 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 2),
1652 DEFINE_PROP_END_OF_LIST(),
1655 static void virtio_blk_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
1657 VirtIOBlkPCI
*dev
= VIRTIO_BLK_PCI(vpci_dev
);
1658 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1660 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1661 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
1664 static void virtio_blk_pci_class_init(ObjectClass
*klass
, void *data
)
1666 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1667 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1668 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1670 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
1671 dc
->props
= virtio_blk_pci_properties
;
1672 k
->realize
= virtio_blk_pci_realize
;
1673 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1674 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_BLOCK
;
1675 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1676 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
1679 static void virtio_blk_pci_instance_init(Object
*obj
)
1681 VirtIOBlkPCI
*dev
= VIRTIO_BLK_PCI(obj
);
1683 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
1685 object_property_add_alias(obj
, "iothread", OBJECT(&dev
->vdev
),"iothread",
1687 object_property_add_alias(obj
, "bootindex", OBJECT(&dev
->vdev
),
1688 "bootindex", &error_abort
);
1691 static const TypeInfo virtio_blk_pci_info
= {
1692 .name
= TYPE_VIRTIO_BLK_PCI
,
1693 .parent
= TYPE_VIRTIO_PCI
,
1694 .instance_size
= sizeof(VirtIOBlkPCI
),
1695 .instance_init
= virtio_blk_pci_instance_init
,
1696 .class_init
= virtio_blk_pci_class_init
,
1699 /* virtio-scsi-pci */
1701 static Property virtio_scsi_pci_properties
[] = {
1702 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1703 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
1704 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
,
1705 DEV_NVECTORS_UNSPECIFIED
),
1706 DEFINE_PROP_END_OF_LIST(),
1709 static void virtio_scsi_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
1711 VirtIOSCSIPCI
*dev
= VIRTIO_SCSI_PCI(vpci_dev
);
1712 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1713 VirtIOSCSICommon
*vs
= VIRTIO_SCSI_COMMON(vdev
);
1714 DeviceState
*proxy
= DEVICE(vpci_dev
);
1717 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
1718 vpci_dev
->nvectors
= vs
->conf
.num_queues
+ 3;
1722 * For command line compatibility, this sets the virtio-scsi-device bus
1726 bus_name
= g_strdup_printf("%s.0", proxy
->id
);
1727 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev
), bus_name
);
1731 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1732 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
1735 static void virtio_scsi_pci_class_init(ObjectClass
*klass
, void *data
)
1737 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1738 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1739 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1741 k
->realize
= virtio_scsi_pci_realize
;
1742 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
1743 dc
->props
= virtio_scsi_pci_properties
;
1744 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1745 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_SCSI
;
1746 pcidev_k
->revision
= 0x00;
1747 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
1750 static void virtio_scsi_pci_instance_init(Object
*obj
)
1752 VirtIOSCSIPCI
*dev
= VIRTIO_SCSI_PCI(obj
);
1754 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
1756 object_property_add_alias(obj
, "iothread", OBJECT(&dev
->vdev
), "iothread",
1760 static const TypeInfo virtio_scsi_pci_info
= {
1761 .name
= TYPE_VIRTIO_SCSI_PCI
,
1762 .parent
= TYPE_VIRTIO_PCI
,
1763 .instance_size
= sizeof(VirtIOSCSIPCI
),
1764 .instance_init
= virtio_scsi_pci_instance_init
,
1765 .class_init
= virtio_scsi_pci_class_init
,
1768 /* vhost-scsi-pci */
1770 #ifdef CONFIG_VHOST_SCSI
1771 static Property vhost_scsi_pci_properties
[] = {
1772 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
,
1773 DEV_NVECTORS_UNSPECIFIED
),
1774 DEFINE_PROP_END_OF_LIST(),
1777 static void vhost_scsi_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
1779 VHostSCSIPCI
*dev
= VHOST_SCSI_PCI(vpci_dev
);
1780 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1781 VirtIOSCSICommon
*vs
= VIRTIO_SCSI_COMMON(vdev
);
1783 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
1784 vpci_dev
->nvectors
= vs
->conf
.num_queues
+ 3;
1787 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1788 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
1791 static void vhost_scsi_pci_class_init(ObjectClass
*klass
, void *data
)
1793 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1794 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1795 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1796 k
->realize
= vhost_scsi_pci_realize
;
1797 set_bit(DEVICE_CATEGORY_STORAGE
, dc
->categories
);
1798 dc
->props
= vhost_scsi_pci_properties
;
1799 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1800 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_SCSI
;
1801 pcidev_k
->revision
= 0x00;
1802 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
1805 static void vhost_scsi_pci_instance_init(Object
*obj
)
1807 VHostSCSIPCI
*dev
= VHOST_SCSI_PCI(obj
);
1809 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
1811 object_property_add_alias(obj
, "bootindex", OBJECT(&dev
->vdev
),
1812 "bootindex", &error_abort
);
1815 static const TypeInfo vhost_scsi_pci_info
= {
1816 .name
= TYPE_VHOST_SCSI_PCI
,
1817 .parent
= TYPE_VIRTIO_PCI
,
1818 .instance_size
= sizeof(VHostSCSIPCI
),
1819 .instance_init
= vhost_scsi_pci_instance_init
,
1820 .class_init
= vhost_scsi_pci_class_init
,
1824 /* virtio-balloon-pci */
1826 static Property virtio_balloon_pci_properties
[] = {
1827 DEFINE_PROP_UINT32("class", VirtIOPCIProxy
, class_code
, 0),
1828 DEFINE_PROP_END_OF_LIST(),
1831 static void virtio_balloon_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
1833 VirtIOBalloonPCI
*dev
= VIRTIO_BALLOON_PCI(vpci_dev
);
1834 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1836 if (vpci_dev
->class_code
!= PCI_CLASS_OTHERS
&&
1837 vpci_dev
->class_code
!= PCI_CLASS_MEMORY_RAM
) { /* qemu < 1.1 */
1838 vpci_dev
->class_code
= PCI_CLASS_OTHERS
;
1841 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1842 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
1845 static void virtio_balloon_pci_class_init(ObjectClass
*klass
, void *data
)
1847 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1848 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1849 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1850 k
->realize
= virtio_balloon_pci_realize
;
1851 set_bit(DEVICE_CATEGORY_MISC
, dc
->categories
);
1852 dc
->props
= virtio_balloon_pci_properties
;
1853 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1854 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_BALLOON
;
1855 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1856 pcidev_k
->class_id
= PCI_CLASS_OTHERS
;
1859 static void virtio_balloon_pci_instance_init(Object
*obj
)
1861 VirtIOBalloonPCI
*dev
= VIRTIO_BALLOON_PCI(obj
);
1863 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
1864 TYPE_VIRTIO_BALLOON
);
1865 object_property_add_alias(obj
, "guest-stats", OBJECT(&dev
->vdev
),
1866 "guest-stats", &error_abort
);
1867 object_property_add_alias(obj
, "guest-stats-polling-interval",
1869 "guest-stats-polling-interval", &error_abort
);
1872 static const TypeInfo virtio_balloon_pci_info
= {
1873 .name
= TYPE_VIRTIO_BALLOON_PCI
,
1874 .parent
= TYPE_VIRTIO_PCI
,
1875 .instance_size
= sizeof(VirtIOBalloonPCI
),
1876 .instance_init
= virtio_balloon_pci_instance_init
,
1877 .class_init
= virtio_balloon_pci_class_init
,
1880 /* virtio-serial-pci */
1882 static void virtio_serial_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
1884 VirtIOSerialPCI
*dev
= VIRTIO_SERIAL_PCI(vpci_dev
);
1885 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1886 DeviceState
*proxy
= DEVICE(vpci_dev
);
1889 if (vpci_dev
->class_code
!= PCI_CLASS_COMMUNICATION_OTHER
&&
1890 vpci_dev
->class_code
!= PCI_CLASS_DISPLAY_OTHER
&& /* qemu 0.10 */
1891 vpci_dev
->class_code
!= PCI_CLASS_OTHERS
) { /* qemu-kvm */
1892 vpci_dev
->class_code
= PCI_CLASS_COMMUNICATION_OTHER
;
1895 /* backwards-compatibility with machines that were created with
1896 DEV_NVECTORS_UNSPECIFIED */
1897 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
1898 vpci_dev
->nvectors
= dev
->vdev
.serial
.max_virtserial_ports
+ 1;
1902 * For command line compatibility, this sets the virtio-serial-device bus
1906 bus_name
= g_strdup_printf("%s.0", proxy
->id
);
1907 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev
), bus_name
);
1911 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1912 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
1915 static Property virtio_serial_pci_properties
[] = {
1916 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1917 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
1918 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 2),
1919 DEFINE_PROP_UINT32("class", VirtIOPCIProxy
, class_code
, 0),
1920 DEFINE_PROP_END_OF_LIST(),
1923 static void virtio_serial_pci_class_init(ObjectClass
*klass
, void *data
)
1925 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1926 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1927 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1928 k
->realize
= virtio_serial_pci_realize
;
1929 set_bit(DEVICE_CATEGORY_INPUT
, dc
->categories
);
1930 dc
->props
= virtio_serial_pci_properties
;
1931 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1932 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_CONSOLE
;
1933 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1934 pcidev_k
->class_id
= PCI_CLASS_COMMUNICATION_OTHER
;
1937 static void virtio_serial_pci_instance_init(Object
*obj
)
1939 VirtIOSerialPCI
*dev
= VIRTIO_SERIAL_PCI(obj
);
1941 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
1942 TYPE_VIRTIO_SERIAL
);
1945 static const TypeInfo virtio_serial_pci_info
= {
1946 .name
= TYPE_VIRTIO_SERIAL_PCI
,
1947 .parent
= TYPE_VIRTIO_PCI
,
1948 .instance_size
= sizeof(VirtIOSerialPCI
),
1949 .instance_init
= virtio_serial_pci_instance_init
,
1950 .class_init
= virtio_serial_pci_class_init
,
1953 /* virtio-net-pci */
1955 static Property virtio_net_properties
[] = {
1956 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1957 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, false),
1958 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 3),
1959 DEFINE_PROP_END_OF_LIST(),
1962 static void virtio_net_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
1964 DeviceState
*qdev
= DEVICE(vpci_dev
);
1965 VirtIONetPCI
*dev
= VIRTIO_NET_PCI(vpci_dev
);
1966 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1968 virtio_net_set_netclient_name(&dev
->vdev
, qdev
->id
,
1969 object_get_typename(OBJECT(qdev
)));
1970 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1971 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
1974 static void virtio_net_pci_class_init(ObjectClass
*klass
, void *data
)
1976 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1977 PCIDeviceClass
*k
= PCI_DEVICE_CLASS(klass
);
1978 VirtioPCIClass
*vpciklass
= VIRTIO_PCI_CLASS(klass
);
1980 k
->romfile
= "efi-virtio.rom";
1981 k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1982 k
->device_id
= PCI_DEVICE_ID_VIRTIO_NET
;
1983 k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1984 k
->class_id
= PCI_CLASS_NETWORK_ETHERNET
;
1985 set_bit(DEVICE_CATEGORY_NETWORK
, dc
->categories
);
1986 dc
->props
= virtio_net_properties
;
1987 vpciklass
->realize
= virtio_net_pci_realize
;
1990 static void virtio_net_pci_instance_init(Object
*obj
)
1992 VirtIONetPCI
*dev
= VIRTIO_NET_PCI(obj
);
1994 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
1996 object_property_add_alias(obj
, "bootindex", OBJECT(&dev
->vdev
),
1997 "bootindex", &error_abort
);
2000 static const TypeInfo virtio_net_pci_info
= {
2001 .name
= TYPE_VIRTIO_NET_PCI
,
2002 .parent
= TYPE_VIRTIO_PCI
,
2003 .instance_size
= sizeof(VirtIONetPCI
),
2004 .instance_init
= virtio_net_pci_instance_init
,
2005 .class_init
= virtio_net_pci_class_init
,
2008 /* virtio-rng-pci */
2010 static void virtio_rng_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
2012 VirtIORngPCI
*vrng
= VIRTIO_RNG_PCI(vpci_dev
);
2013 DeviceState
*vdev
= DEVICE(&vrng
->vdev
);
2016 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
2017 object_property_set_bool(OBJECT(vdev
), true, "realized", &err
);
2019 error_propagate(errp
, err
);
2023 object_property_set_link(OBJECT(vrng
),
2024 OBJECT(vrng
->vdev
.conf
.rng
), "rng",
2028 static void virtio_rng_pci_class_init(ObjectClass
*klass
, void *data
)
2030 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2031 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
2032 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
2034 k
->realize
= virtio_rng_pci_realize
;
2035 set_bit(DEVICE_CATEGORY_MISC
, dc
->categories
);
2037 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
2038 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_RNG
;
2039 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
2040 pcidev_k
->class_id
= PCI_CLASS_OTHERS
;
2043 static void virtio_rng_initfn(Object
*obj
)
2045 VirtIORngPCI
*dev
= VIRTIO_RNG_PCI(obj
);
2047 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
2049 object_property_add_alias(obj
, "rng", OBJECT(&dev
->vdev
), "rng",
2053 static const TypeInfo virtio_rng_pci_info
= {
2054 .name
= TYPE_VIRTIO_RNG_PCI
,
2055 .parent
= TYPE_VIRTIO_PCI
,
2056 .instance_size
= sizeof(VirtIORngPCI
),
2057 .instance_init
= virtio_rng_initfn
,
2058 .class_init
= virtio_rng_pci_class_init
,
2061 /* virtio-input-pci */
2063 static Property virtio_input_pci_properties
[] = {
2064 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 2),
2065 DEFINE_PROP_END_OF_LIST(),
2068 static void virtio_input_pci_realize(VirtIOPCIProxy
*vpci_dev
, Error
**errp
)
2070 VirtIOInputPCI
*vinput
= VIRTIO_INPUT_PCI(vpci_dev
);
2071 DeviceState
*vdev
= DEVICE(&vinput
->vdev
);
2073 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
2074 /* force virtio-1.0 */
2075 vpci_dev
->flags
&= ~VIRTIO_PCI_FLAG_DISABLE_MODERN
;
2076 vpci_dev
->flags
|= VIRTIO_PCI_FLAG_DISABLE_LEGACY
;
2077 object_property_set_bool(OBJECT(vdev
), true, "realized", errp
);
2080 static void virtio_input_pci_class_init(ObjectClass
*klass
, void *data
)
2082 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2083 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
2084 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
2086 dc
->props
= virtio_input_pci_properties
;
2087 k
->realize
= virtio_input_pci_realize
;
2088 set_bit(DEVICE_CATEGORY_INPUT
, dc
->categories
);
2090 pcidev_k
->class_id
= PCI_CLASS_INPUT_OTHER
;
2093 static void virtio_input_hid_kbd_pci_class_init(ObjectClass
*klass
, void *data
)
2095 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
2097 pcidev_k
->class_id
= PCI_CLASS_INPUT_KEYBOARD
;
2100 static void virtio_input_hid_mouse_pci_class_init(ObjectClass
*klass
,
2103 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
2105 pcidev_k
->class_id
= PCI_CLASS_INPUT_MOUSE
;
2108 static void virtio_keyboard_initfn(Object
*obj
)
2110 VirtIOInputHIDPCI
*dev
= VIRTIO_INPUT_HID_PCI(obj
);
2112 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
2113 TYPE_VIRTIO_KEYBOARD
);
2116 static void virtio_mouse_initfn(Object
*obj
)
2118 VirtIOInputHIDPCI
*dev
= VIRTIO_INPUT_HID_PCI(obj
);
2120 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
2124 static void virtio_tablet_initfn(Object
*obj
)
2126 VirtIOInputHIDPCI
*dev
= VIRTIO_INPUT_HID_PCI(obj
);
2128 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
2129 TYPE_VIRTIO_TABLET
);
2132 static void virtio_host_initfn(Object
*obj
)
2134 VirtIOInputHostPCI
*dev
= VIRTIO_INPUT_HOST_PCI(obj
);
2136 virtio_instance_init_common(obj
, &dev
->vdev
, sizeof(dev
->vdev
),
2137 TYPE_VIRTIO_INPUT_HOST
);
2140 static const TypeInfo virtio_input_pci_info
= {
2141 .name
= TYPE_VIRTIO_INPUT_PCI
,
2142 .parent
= TYPE_VIRTIO_PCI
,
2143 .instance_size
= sizeof(VirtIOInputPCI
),
2144 .class_init
= virtio_input_pci_class_init
,
2148 static const TypeInfo virtio_input_hid_pci_info
= {
2149 .name
= TYPE_VIRTIO_INPUT_HID_PCI
,
2150 .parent
= TYPE_VIRTIO_INPUT_PCI
,
2151 .instance_size
= sizeof(VirtIOInputHIDPCI
),
2155 static const TypeInfo virtio_keyboard_pci_info
= {
2156 .name
= TYPE_VIRTIO_KEYBOARD_PCI
,
2157 .parent
= TYPE_VIRTIO_INPUT_HID_PCI
,
2158 .class_init
= virtio_input_hid_kbd_pci_class_init
,
2159 .instance_size
= sizeof(VirtIOInputHIDPCI
),
2160 .instance_init
= virtio_keyboard_initfn
,
2163 static const TypeInfo virtio_mouse_pci_info
= {
2164 .name
= TYPE_VIRTIO_MOUSE_PCI
,
2165 .parent
= TYPE_VIRTIO_INPUT_HID_PCI
,
2166 .class_init
= virtio_input_hid_mouse_pci_class_init
,
2167 .instance_size
= sizeof(VirtIOInputHIDPCI
),
2168 .instance_init
= virtio_mouse_initfn
,
2171 static const TypeInfo virtio_tablet_pci_info
= {
2172 .name
= TYPE_VIRTIO_TABLET_PCI
,
2173 .parent
= TYPE_VIRTIO_INPUT_HID_PCI
,
2174 .instance_size
= sizeof(VirtIOInputHIDPCI
),
2175 .instance_init
= virtio_tablet_initfn
,
2178 static const TypeInfo virtio_host_pci_info
= {
2179 .name
= TYPE_VIRTIO_INPUT_HOST_PCI
,
2180 .parent
= TYPE_VIRTIO_INPUT_PCI
,
2181 .instance_size
= sizeof(VirtIOInputHostPCI
),
2182 .instance_init
= virtio_host_initfn
,
2185 /* virtio-pci-bus */
2187 static void virtio_pci_bus_new(VirtioBusState
*bus
, size_t bus_size
,
2188 VirtIOPCIProxy
*dev
)
2190 DeviceState
*qdev
= DEVICE(dev
);
2191 char virtio_bus_name
[] = "virtio-bus";
2193 qbus_create_inplace(bus
, bus_size
, TYPE_VIRTIO_PCI_BUS
, qdev
,
2197 static void virtio_pci_bus_class_init(ObjectClass
*klass
, void *data
)
2199 BusClass
*bus_class
= BUS_CLASS(klass
);
2200 VirtioBusClass
*k
= VIRTIO_BUS_CLASS(klass
);
2201 bus_class
->max_dev
= 1;
2202 k
->notify
= virtio_pci_notify
;
2203 k
->save_config
= virtio_pci_save_config
;
2204 k
->load_config
= virtio_pci_load_config
;
2205 k
->save_queue
= virtio_pci_save_queue
;
2206 k
->load_queue
= virtio_pci_load_queue
;
2207 k
->query_guest_notifiers
= virtio_pci_query_guest_notifiers
;
2208 k
->set_host_notifier
= virtio_pci_set_host_notifier
;
2209 k
->set_guest_notifiers
= virtio_pci_set_guest_notifiers
;
2210 k
->vmstate_change
= virtio_pci_vmstate_change
;
2211 k
->device_plugged
= virtio_pci_device_plugged
;
2212 k
->device_unplugged
= virtio_pci_device_unplugged
;
2213 k
->query_nvectors
= virtio_pci_query_nvectors
;
2216 static const TypeInfo virtio_pci_bus_info
= {
2217 .name
= TYPE_VIRTIO_PCI_BUS
,
2218 .parent
= TYPE_VIRTIO_BUS
,
2219 .instance_size
= sizeof(VirtioPCIBusState
),
2220 .class_init
= virtio_pci_bus_class_init
,
2223 static void virtio_pci_register_types(void)
2225 type_register_static(&virtio_rng_pci_info
);
2226 type_register_static(&virtio_input_pci_info
);
2227 type_register_static(&virtio_input_hid_pci_info
);
2228 type_register_static(&virtio_keyboard_pci_info
);
2229 type_register_static(&virtio_mouse_pci_info
);
2230 type_register_static(&virtio_tablet_pci_info
);
2231 type_register_static(&virtio_host_pci_info
);
2232 type_register_static(&virtio_pci_bus_info
);
2233 type_register_static(&virtio_pci_info
);
2234 #ifdef CONFIG_VIRTFS
2235 type_register_static(&virtio_9p_pci_info
);
2237 type_register_static(&virtio_blk_pci_info
);
2238 type_register_static(&virtio_scsi_pci_info
);
2239 type_register_static(&virtio_balloon_pci_info
);
2240 type_register_static(&virtio_serial_pci_info
);
2241 type_register_static(&virtio_net_pci_info
);
2242 #ifdef CONFIG_VHOST_SCSI
2243 type_register_static(&vhost_scsi_pci_info
);
2247 type_init(virtio_pci_register_types
)