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 "hw/virtio/virtio.h"
21 #include "hw/virtio/virtio-blk.h"
22 #include "hw/virtio/virtio-net.h"
23 #include "hw/virtio/virtio-serial.h"
24 #include "hw/virtio/virtio-scsi.h"
25 #include "hw/virtio/virtio-balloon.h"
26 #include "hw/pci/pci.h"
27 #include "qemu/error-report.h"
28 #include "hw/pci/msi.h"
29 #include "hw/pci/msix.h"
30 #include "hw/loader.h"
31 #include "sysemu/kvm.h"
32 #include "sysemu/blockdev.h"
33 #include "virtio-pci.h"
34 #include "qemu/range.h"
35 #include "hw/virtio/virtio-bus.h"
36 #include "qapi/visitor.h"
38 /* from Linux's linux/virtio_pci.h */
40 /* A 32-bit r/o bitmask of the features supported by the host */
41 #define VIRTIO_PCI_HOST_FEATURES 0
43 /* A 32-bit r/w bitmask of features activated by the guest */
44 #define VIRTIO_PCI_GUEST_FEATURES 4
46 /* A 32-bit r/w PFN for the currently selected queue */
47 #define VIRTIO_PCI_QUEUE_PFN 8
49 /* A 16-bit r/o queue size for the currently selected queue */
50 #define VIRTIO_PCI_QUEUE_NUM 12
52 /* A 16-bit r/w queue selector */
53 #define VIRTIO_PCI_QUEUE_SEL 14
55 /* A 16-bit r/w queue notifier */
56 #define VIRTIO_PCI_QUEUE_NOTIFY 16
58 /* An 8-bit device status register. */
59 #define VIRTIO_PCI_STATUS 18
61 /* An 8-bit r/o interrupt status register. Reading the value will return the
62 * current contents of the ISR and will also clear it. This is effectively
63 * a read-and-acknowledge. */
64 #define VIRTIO_PCI_ISR 19
66 /* MSI-X registers: only enabled if MSI-X is enabled. */
67 /* A 16-bit vector for configuration changes. */
68 #define VIRTIO_MSI_CONFIG_VECTOR 20
69 /* A 16-bit vector for selected queue notifications. */
70 #define VIRTIO_MSI_QUEUE_VECTOR 22
72 /* Config space size */
73 #define VIRTIO_PCI_CONFIG_NOMSI 20
74 #define VIRTIO_PCI_CONFIG_MSI 24
75 #define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \
76 VIRTIO_PCI_CONFIG_MSI : \
77 VIRTIO_PCI_CONFIG_NOMSI)
79 /* The remaining space is defined by each driver as the per-driver
80 * configuration space */
81 #define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \
82 VIRTIO_PCI_CONFIG_MSI : \
83 VIRTIO_PCI_CONFIG_NOMSI)
85 /* How many bits to shift physical queue address written to QUEUE_PFN.
86 * 12 is historical, and due to x86 page size. */
87 #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
89 /* Flags track per-device state like workarounds for quirks in older guests. */
90 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0)
92 /* QEMU doesn't strictly need write barriers since everything runs in
93 * lock-step. We'll leave the calls to wmb() in though to make it obvious for
94 * KVM or if kqemu gets SMP support.
96 #define wmb() do { } while (0)
98 /* HACK for virtio to determine if it's running a big endian guest */
99 bool virtio_is_big_endian(void);
101 static void virtio_pci_bus_new(VirtioBusState
*bus
, VirtIOPCIProxy
*dev
);
104 /* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */
105 static inline VirtIOPCIProxy
*to_virtio_pci_proxy(DeviceState
*d
)
107 return container_of(d
, VirtIOPCIProxy
, pci_dev
.qdev
);
110 /* DeviceState to VirtIOPCIProxy. Note: used on datapath,
111 * be careful and test performance if you change this.
113 static inline VirtIOPCIProxy
*to_virtio_pci_proxy_fast(DeviceState
*d
)
115 return container_of(d
, VirtIOPCIProxy
, pci_dev
.qdev
);
118 static void virtio_pci_notify(DeviceState
*d
, uint16_t vector
)
120 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy_fast(d
);
121 if (msix_enabled(&proxy
->pci_dev
))
122 msix_notify(&proxy
->pci_dev
, vector
);
124 qemu_set_irq(proxy
->pci_dev
.irq
[0], proxy
->vdev
->isr
& 1);
127 static void virtio_pci_save_config(DeviceState
*d
, QEMUFile
*f
)
129 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
130 pci_device_save(&proxy
->pci_dev
, f
);
131 msix_save(&proxy
->pci_dev
, f
);
132 if (msix_present(&proxy
->pci_dev
))
133 qemu_put_be16(f
, proxy
->vdev
->config_vector
);
136 static void virtio_pci_save_queue(DeviceState
*d
, int n
, QEMUFile
*f
)
138 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
139 if (msix_present(&proxy
->pci_dev
))
140 qemu_put_be16(f
, virtio_queue_vector(proxy
->vdev
, n
));
143 static int virtio_pci_load_config(DeviceState
*d
, QEMUFile
*f
)
145 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
147 ret
= pci_device_load(&proxy
->pci_dev
, f
);
151 msix_unuse_all_vectors(&proxy
->pci_dev
);
152 msix_load(&proxy
->pci_dev
, f
);
153 if (msix_present(&proxy
->pci_dev
)) {
154 qemu_get_be16s(f
, &proxy
->vdev
->config_vector
);
156 proxy
->vdev
->config_vector
= VIRTIO_NO_VECTOR
;
158 if (proxy
->vdev
->config_vector
!= VIRTIO_NO_VECTOR
) {
159 return msix_vector_use(&proxy
->pci_dev
, proxy
->vdev
->config_vector
);
164 static int virtio_pci_load_queue(DeviceState
*d
, int n
, QEMUFile
*f
)
166 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
168 if (msix_present(&proxy
->pci_dev
)) {
169 qemu_get_be16s(f
, &vector
);
171 vector
= VIRTIO_NO_VECTOR
;
173 virtio_queue_set_vector(proxy
->vdev
, n
, vector
);
174 if (vector
!= VIRTIO_NO_VECTOR
) {
175 return msix_vector_use(&proxy
->pci_dev
, vector
);
180 static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy
*proxy
,
181 int n
, bool assign
, bool set_handler
)
183 VirtQueue
*vq
= virtio_get_queue(proxy
->vdev
, n
);
184 EventNotifier
*notifier
= virtio_queue_get_host_notifier(vq
);
188 r
= event_notifier_init(notifier
, 1);
190 error_report("%s: unable to init event notifier: %d",
194 virtio_queue_set_host_notifier_fd_handler(vq
, true, set_handler
);
195 memory_region_add_eventfd(&proxy
->bar
, VIRTIO_PCI_QUEUE_NOTIFY
, 2,
198 memory_region_del_eventfd(&proxy
->bar
, VIRTIO_PCI_QUEUE_NOTIFY
, 2,
200 virtio_queue_set_host_notifier_fd_handler(vq
, false, false);
201 event_notifier_cleanup(notifier
);
206 static void virtio_pci_start_ioeventfd(VirtIOPCIProxy
*proxy
)
210 if (!(proxy
->flags
& VIRTIO_PCI_FLAG_USE_IOEVENTFD
) ||
211 proxy
->ioeventfd_disabled
||
212 proxy
->ioeventfd_started
) {
216 for (n
= 0; n
< VIRTIO_PCI_QUEUE_MAX
; n
++) {
217 if (!virtio_queue_get_num(proxy
->vdev
, n
)) {
221 r
= virtio_pci_set_host_notifier_internal(proxy
, n
, true, true);
226 proxy
->ioeventfd_started
= true;
231 if (!virtio_queue_get_num(proxy
->vdev
, n
)) {
235 r
= virtio_pci_set_host_notifier_internal(proxy
, n
, false, false);
238 proxy
->ioeventfd_started
= false;
239 error_report("%s: failed. Fallback to a userspace (slower).", __func__
);
242 static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy
*proxy
)
247 if (!proxy
->ioeventfd_started
) {
251 for (n
= 0; n
< VIRTIO_PCI_QUEUE_MAX
; n
++) {
252 if (!virtio_queue_get_num(proxy
->vdev
, n
)) {
256 r
= virtio_pci_set_host_notifier_internal(proxy
, n
, false, false);
259 proxy
->ioeventfd_started
= false;
262 static void virtio_ioport_write(void *opaque
, uint32_t addr
, uint32_t val
)
264 VirtIOPCIProxy
*proxy
= opaque
;
265 VirtIODevice
*vdev
= proxy
->vdev
;
269 case VIRTIO_PCI_GUEST_FEATURES
:
270 /* Guest does not negotiate properly? We have to assume nothing. */
271 if (val
& (1 << VIRTIO_F_BAD_FEATURE
)) {
272 val
= virtio_bus_get_vdev_bad_features(&proxy
->bus
);
274 virtio_set_features(vdev
, val
);
276 case VIRTIO_PCI_QUEUE_PFN
:
277 pa
= (hwaddr
)val
<< VIRTIO_PCI_QUEUE_ADDR_SHIFT
;
279 virtio_pci_stop_ioeventfd(proxy
);
280 virtio_reset(proxy
->vdev
);
281 msix_unuse_all_vectors(&proxy
->pci_dev
);
284 virtio_queue_set_addr(vdev
, vdev
->queue_sel
, pa
);
286 case VIRTIO_PCI_QUEUE_SEL
:
287 if (val
< VIRTIO_PCI_QUEUE_MAX
)
288 vdev
->queue_sel
= val
;
290 case VIRTIO_PCI_QUEUE_NOTIFY
:
291 if (val
< VIRTIO_PCI_QUEUE_MAX
) {
292 virtio_queue_notify(vdev
, val
);
295 case VIRTIO_PCI_STATUS
:
296 if (!(val
& VIRTIO_CONFIG_S_DRIVER_OK
)) {
297 virtio_pci_stop_ioeventfd(proxy
);
300 virtio_set_status(vdev
, val
& 0xFF);
302 if (val
& VIRTIO_CONFIG_S_DRIVER_OK
) {
303 virtio_pci_start_ioeventfd(proxy
);
306 if (vdev
->status
== 0) {
307 virtio_reset(proxy
->vdev
);
308 msix_unuse_all_vectors(&proxy
->pci_dev
);
311 /* Linux before 2.6.34 sets the device as OK without enabling
312 the PCI device bus master bit. In this case we need to disable
313 some safety checks. */
314 if ((val
& VIRTIO_CONFIG_S_DRIVER_OK
) &&
315 !(proxy
->pci_dev
.config
[PCI_COMMAND
] & PCI_COMMAND_MASTER
)) {
316 proxy
->flags
|= VIRTIO_PCI_FLAG_BUS_MASTER_BUG
;
319 case VIRTIO_MSI_CONFIG_VECTOR
:
320 msix_vector_unuse(&proxy
->pci_dev
, vdev
->config_vector
);
321 /* Make it possible for guest to discover an error took place. */
322 if (msix_vector_use(&proxy
->pci_dev
, val
) < 0)
323 val
= VIRTIO_NO_VECTOR
;
324 vdev
->config_vector
= val
;
326 case VIRTIO_MSI_QUEUE_VECTOR
:
327 msix_vector_unuse(&proxy
->pci_dev
,
328 virtio_queue_vector(vdev
, vdev
->queue_sel
));
329 /* Make it possible for guest to discover an error took place. */
330 if (msix_vector_use(&proxy
->pci_dev
, val
) < 0)
331 val
= VIRTIO_NO_VECTOR
;
332 virtio_queue_set_vector(vdev
, vdev
->queue_sel
, val
);
335 error_report("%s: unexpected address 0x%x value 0x%x",
336 __func__
, addr
, val
);
341 static uint32_t virtio_ioport_read(VirtIOPCIProxy
*proxy
, uint32_t addr
)
343 VirtIODevice
*vdev
= proxy
->vdev
;
344 uint32_t ret
= 0xFFFFFFFF;
347 case VIRTIO_PCI_HOST_FEATURES
:
348 ret
= proxy
->host_features
;
350 case VIRTIO_PCI_GUEST_FEATURES
:
351 ret
= vdev
->guest_features
;
353 case VIRTIO_PCI_QUEUE_PFN
:
354 ret
= virtio_queue_get_addr(vdev
, vdev
->queue_sel
)
355 >> VIRTIO_PCI_QUEUE_ADDR_SHIFT
;
357 case VIRTIO_PCI_QUEUE_NUM
:
358 ret
= virtio_queue_get_num(vdev
, vdev
->queue_sel
);
360 case VIRTIO_PCI_QUEUE_SEL
:
361 ret
= vdev
->queue_sel
;
363 case VIRTIO_PCI_STATUS
:
367 /* reading from the ISR also clears it. */
370 qemu_set_irq(proxy
->pci_dev
.irq
[0], 0);
372 case VIRTIO_MSI_CONFIG_VECTOR
:
373 ret
= vdev
->config_vector
;
375 case VIRTIO_MSI_QUEUE_VECTOR
:
376 ret
= virtio_queue_vector(vdev
, vdev
->queue_sel
);
385 static uint64_t virtio_pci_config_read(void *opaque
, hwaddr addr
,
388 VirtIOPCIProxy
*proxy
= opaque
;
389 uint32_t config
= VIRTIO_PCI_CONFIG(&proxy
->pci_dev
);
392 return virtio_ioport_read(proxy
, addr
);
398 val
= virtio_config_readb(proxy
->vdev
, addr
);
401 val
= virtio_config_readw(proxy
->vdev
, addr
);
402 if (virtio_is_big_endian()) {
407 val
= virtio_config_readl(proxy
->vdev
, addr
);
408 if (virtio_is_big_endian()) {
416 static void virtio_pci_config_write(void *opaque
, hwaddr addr
,
417 uint64_t val
, unsigned size
)
419 VirtIOPCIProxy
*proxy
= opaque
;
420 uint32_t config
= VIRTIO_PCI_CONFIG(&proxy
->pci_dev
);
422 virtio_ioport_write(proxy
, addr
, val
);
427 * Virtio-PCI is odd. Ioports are LE but config space is target native
432 virtio_config_writeb(proxy
->vdev
, addr
, val
);
435 if (virtio_is_big_endian()) {
438 virtio_config_writew(proxy
->vdev
, addr
, val
);
441 if (virtio_is_big_endian()) {
444 virtio_config_writel(proxy
->vdev
, addr
, val
);
449 static const MemoryRegionOps virtio_pci_config_ops
= {
450 .read
= virtio_pci_config_read
,
451 .write
= virtio_pci_config_write
,
453 .min_access_size
= 1,
454 .max_access_size
= 4,
456 .endianness
= DEVICE_LITTLE_ENDIAN
,
459 static void virtio_write_config(PCIDevice
*pci_dev
, uint32_t address
,
460 uint32_t val
, int len
)
462 VirtIOPCIProxy
*proxy
= DO_UPCAST(VirtIOPCIProxy
, pci_dev
, pci_dev
);
464 pci_default_write_config(pci_dev
, address
, val
, len
);
466 if (range_covers_byte(address
, len
, PCI_COMMAND
) &&
467 !(pci_dev
->config
[PCI_COMMAND
] & PCI_COMMAND_MASTER
) &&
468 !(proxy
->flags
& VIRTIO_PCI_FLAG_BUS_MASTER_BUG
)) {
469 virtio_pci_stop_ioeventfd(proxy
);
470 virtio_set_status(proxy
->vdev
,
471 proxy
->vdev
->status
& ~VIRTIO_CONFIG_S_DRIVER_OK
);
475 static unsigned virtio_pci_get_features(DeviceState
*d
)
477 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
478 return proxy
->host_features
;
481 static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy
*proxy
,
482 unsigned int queue_no
,
486 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
489 if (irqfd
->users
== 0) {
490 ret
= kvm_irqchip_add_msi_route(kvm_state
, msg
);
500 static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy
*proxy
,
503 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
504 if (--irqfd
->users
== 0) {
505 kvm_irqchip_release_virq(kvm_state
, irqfd
->virq
);
509 static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy
*proxy
,
510 unsigned int queue_no
,
513 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
514 VirtQueue
*vq
= virtio_get_queue(proxy
->vdev
, queue_no
);
515 EventNotifier
*n
= virtio_queue_get_guest_notifier(vq
);
517 ret
= kvm_irqchip_add_irqfd_notifier(kvm_state
, n
, irqfd
->virq
);
521 static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy
*proxy
,
522 unsigned int queue_no
,
525 VirtQueue
*vq
= virtio_get_queue(proxy
->vdev
, queue_no
);
526 EventNotifier
*n
= virtio_queue_get_guest_notifier(vq
);
527 VirtIOIRQFD
*irqfd
= &proxy
->vector_irqfd
[vector
];
530 ret
= kvm_irqchip_remove_irqfd_notifier(kvm_state
, n
, irqfd
->virq
);
534 static int kvm_virtio_pci_vector_use(VirtIOPCIProxy
*proxy
, int nvqs
)
536 PCIDevice
*dev
= &proxy
->pci_dev
;
537 VirtIODevice
*vdev
= proxy
->vdev
;
538 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
543 for (queue_no
= 0; queue_no
< nvqs
; queue_no
++) {
544 if (!virtio_queue_get_num(vdev
, queue_no
)) {
547 vector
= virtio_queue_vector(vdev
, queue_no
);
548 if (vector
>= msix_nr_vectors_allocated(dev
)) {
551 msg
= msix_get_message(dev
, vector
);
552 ret
= kvm_virtio_pci_vq_vector_use(proxy
, queue_no
, vector
, msg
);
556 /* If guest supports masking, set up irqfd now.
557 * Otherwise, delay until unmasked in the frontend.
559 if (k
->guest_notifier_mask
) {
560 ret
= kvm_virtio_pci_irqfd_use(proxy
, queue_no
, vector
);
562 kvm_virtio_pci_vq_vector_release(proxy
, vector
);
570 while (--queue_no
>= 0) {
571 vector
= virtio_queue_vector(vdev
, queue_no
);
572 if (vector
>= msix_nr_vectors_allocated(dev
)) {
575 if (k
->guest_notifier_mask
) {
576 kvm_virtio_pci_irqfd_release(proxy
, queue_no
, vector
);
578 kvm_virtio_pci_vq_vector_release(proxy
, vector
);
583 static void kvm_virtio_pci_vector_release(VirtIOPCIProxy
*proxy
, int nvqs
)
585 PCIDevice
*dev
= &proxy
->pci_dev
;
586 VirtIODevice
*vdev
= proxy
->vdev
;
589 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
591 for (queue_no
= 0; queue_no
< nvqs
; queue_no
++) {
592 if (!virtio_queue_get_num(vdev
, queue_no
)) {
595 vector
= virtio_queue_vector(vdev
, queue_no
);
596 if (vector
>= msix_nr_vectors_allocated(dev
)) {
599 /* If guest supports masking, clean up irqfd now.
600 * Otherwise, it was cleaned when masked in the frontend.
602 if (k
->guest_notifier_mask
) {
603 kvm_virtio_pci_irqfd_release(proxy
, queue_no
, vector
);
605 kvm_virtio_pci_vq_vector_release(proxy
, vector
);
609 static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy
*proxy
,
610 unsigned int queue_no
,
614 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(proxy
->vdev
);
615 VirtQueue
*vq
= virtio_get_queue(proxy
->vdev
, queue_no
);
616 EventNotifier
*n
= virtio_queue_get_guest_notifier(vq
);
620 if (proxy
->vector_irqfd
) {
621 irqfd
= &proxy
->vector_irqfd
[vector
];
622 if (irqfd
->msg
.data
!= msg
.data
|| irqfd
->msg
.address
!= msg
.address
) {
623 ret
= kvm_irqchip_update_msi_route(kvm_state
, irqfd
->virq
, msg
);
630 /* If guest supports masking, irqfd is already setup, unmask it.
631 * Otherwise, set it up now.
633 if (k
->guest_notifier_mask
) {
634 k
->guest_notifier_mask(proxy
->vdev
, queue_no
, false);
635 /* Test after unmasking to avoid losing events. */
636 if (k
->guest_notifier_pending
&&
637 k
->guest_notifier_pending(proxy
->vdev
, queue_no
)) {
638 event_notifier_set(n
);
641 ret
= kvm_virtio_pci_irqfd_use(proxy
, queue_no
, vector
);
646 static void virtio_pci_vq_vector_mask(VirtIOPCIProxy
*proxy
,
647 unsigned int queue_no
,
650 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(proxy
->vdev
);
652 /* If guest supports masking, keep irqfd but mask it.
653 * Otherwise, clean it up now.
655 if (k
->guest_notifier_mask
) {
656 k
->guest_notifier_mask(proxy
->vdev
, queue_no
, true);
658 kvm_virtio_pci_irqfd_release(proxy
, queue_no
, vector
);
662 static int virtio_pci_vector_unmask(PCIDevice
*dev
, unsigned vector
,
665 VirtIOPCIProxy
*proxy
= container_of(dev
, VirtIOPCIProxy
, pci_dev
);
666 VirtIODevice
*vdev
= proxy
->vdev
;
669 for (queue_no
= 0; queue_no
< proxy
->nvqs_with_notifiers
; queue_no
++) {
670 if (!virtio_queue_get_num(vdev
, queue_no
)) {
673 if (virtio_queue_vector(vdev
, queue_no
) != vector
) {
676 ret
= virtio_pci_vq_vector_unmask(proxy
, queue_no
, vector
, msg
);
684 while (--queue_no
>= 0) {
685 if (virtio_queue_vector(vdev
, queue_no
) != vector
) {
688 virtio_pci_vq_vector_mask(proxy
, queue_no
, vector
);
693 static void virtio_pci_vector_mask(PCIDevice
*dev
, unsigned vector
)
695 VirtIOPCIProxy
*proxy
= container_of(dev
, VirtIOPCIProxy
, pci_dev
);
696 VirtIODevice
*vdev
= proxy
->vdev
;
699 for (queue_no
= 0; queue_no
< proxy
->nvqs_with_notifiers
; queue_no
++) {
700 if (!virtio_queue_get_num(vdev
, queue_no
)) {
703 if (virtio_queue_vector(vdev
, queue_no
) != vector
) {
706 virtio_pci_vq_vector_mask(proxy
, queue_no
, vector
);
710 static void virtio_pci_vector_poll(PCIDevice
*dev
,
711 unsigned int vector_start
,
712 unsigned int vector_end
)
714 VirtIOPCIProxy
*proxy
= container_of(dev
, VirtIOPCIProxy
, pci_dev
);
715 VirtIODevice
*vdev
= proxy
->vdev
;
716 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
719 EventNotifier
*notifier
;
722 for (queue_no
= 0; queue_no
< proxy
->nvqs_with_notifiers
; queue_no
++) {
723 if (!virtio_queue_get_num(vdev
, queue_no
)) {
726 vector
= virtio_queue_vector(vdev
, queue_no
);
727 if (vector
< vector_start
|| vector
>= vector_end
||
728 !msix_is_masked(dev
, vector
)) {
731 vq
= virtio_get_queue(vdev
, queue_no
);
732 notifier
= virtio_queue_get_guest_notifier(vq
);
733 if (k
->guest_notifier_pending
) {
734 if (k
->guest_notifier_pending(vdev
, queue_no
)) {
735 msix_set_pending(dev
, vector
);
737 } else if (event_notifier_test_and_clear(notifier
)) {
738 msix_set_pending(dev
, vector
);
743 static int virtio_pci_set_guest_notifier(DeviceState
*d
, int n
, bool assign
,
746 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
747 VirtQueue
*vq
= virtio_get_queue(proxy
->vdev
, n
);
748 EventNotifier
*notifier
= virtio_queue_get_guest_notifier(vq
);
751 int r
= event_notifier_init(notifier
, 0);
755 virtio_queue_set_guest_notifier_fd_handler(vq
, true, with_irqfd
);
757 virtio_queue_set_guest_notifier_fd_handler(vq
, false, with_irqfd
);
758 event_notifier_cleanup(notifier
);
764 static bool virtio_pci_query_guest_notifiers(DeviceState
*d
)
766 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
767 return msix_enabled(&proxy
->pci_dev
);
770 static int virtio_pci_set_guest_notifiers(DeviceState
*d
, int nvqs
, bool assign
)
772 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
773 VirtIODevice
*vdev
= proxy
->vdev
;
774 VirtioDeviceClass
*k
= VIRTIO_DEVICE_GET_CLASS(vdev
);
776 bool with_irqfd
= msix_enabled(&proxy
->pci_dev
) &&
777 kvm_msi_via_irqfd_enabled();
779 nvqs
= MIN(nvqs
, VIRTIO_PCI_QUEUE_MAX
);
781 /* When deassigning, pass a consistent nvqs value
782 * to avoid leaking notifiers.
784 assert(assign
|| nvqs
== proxy
->nvqs_with_notifiers
);
786 proxy
->nvqs_with_notifiers
= nvqs
;
788 /* Must unset vector notifier while guest notifier is still assigned */
789 if ((proxy
->vector_irqfd
|| k
->guest_notifier_mask
) && !assign
) {
790 msix_unset_vector_notifiers(&proxy
->pci_dev
);
791 if (proxy
->vector_irqfd
) {
792 kvm_virtio_pci_vector_release(proxy
, nvqs
);
793 g_free(proxy
->vector_irqfd
);
794 proxy
->vector_irqfd
= NULL
;
798 for (n
= 0; n
< nvqs
; n
++) {
799 if (!virtio_queue_get_num(vdev
, n
)) {
803 r
= virtio_pci_set_guest_notifier(d
, n
, assign
,
804 kvm_msi_via_irqfd_enabled());
810 /* Must set vector notifier after guest notifier has been assigned */
811 if ((with_irqfd
|| k
->guest_notifier_mask
) && assign
) {
813 proxy
->vector_irqfd
=
814 g_malloc0(sizeof(*proxy
->vector_irqfd
) *
815 msix_nr_vectors_allocated(&proxy
->pci_dev
));
816 r
= kvm_virtio_pci_vector_use(proxy
, nvqs
);
821 r
= msix_set_vector_notifiers(&proxy
->pci_dev
,
822 virtio_pci_vector_unmask
,
823 virtio_pci_vector_mask
,
824 virtio_pci_vector_poll
);
826 goto notifiers_error
;
835 kvm_virtio_pci_vector_release(proxy
, nvqs
);
839 /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
842 virtio_pci_set_guest_notifier(d
, n
, !assign
, with_irqfd
);
847 static int virtio_pci_set_host_notifier(DeviceState
*d
, int n
, bool assign
)
849 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
851 /* Stop using ioeventfd for virtqueue kick if the device starts using host
852 * notifiers. This makes it easy to avoid stepping on each others' toes.
854 proxy
->ioeventfd_disabled
= assign
;
856 virtio_pci_stop_ioeventfd(proxy
);
858 /* We don't need to start here: it's not needed because backend
859 * currently only stops on status change away from ok,
860 * reset, vmstop and such. If we do add code to start here,
861 * need to check vmstate, device state etc. */
862 return virtio_pci_set_host_notifier_internal(proxy
, n
, assign
, false);
865 static void virtio_pci_vmstate_change(DeviceState
*d
, bool running
)
867 VirtIOPCIProxy
*proxy
= to_virtio_pci_proxy(d
);
870 /* Try to find out if the guest has bus master disabled, but is
871 in ready state. Then we have a buggy guest OS. */
872 if ((proxy
->vdev
->status
& VIRTIO_CONFIG_S_DRIVER_OK
) &&
873 !(proxy
->pci_dev
.config
[PCI_COMMAND
] & PCI_COMMAND_MASTER
)) {
874 proxy
->flags
|= VIRTIO_PCI_FLAG_BUS_MASTER_BUG
;
876 virtio_pci_start_ioeventfd(proxy
);
878 virtio_pci_stop_ioeventfd(proxy
);
882 static const VirtIOBindings virtio_pci_bindings
= {
883 .notify
= virtio_pci_notify
,
884 .save_config
= virtio_pci_save_config
,
885 .load_config
= virtio_pci_load_config
,
886 .save_queue
= virtio_pci_save_queue
,
887 .load_queue
= virtio_pci_load_queue
,
888 .get_features
= virtio_pci_get_features
,
889 .query_guest_notifiers
= virtio_pci_query_guest_notifiers
,
890 .set_host_notifier
= virtio_pci_set_host_notifier
,
891 .set_guest_notifiers
= virtio_pci_set_guest_notifiers
,
892 .vmstate_change
= virtio_pci_vmstate_change
,
896 static int virtio_9p_init_pci(VirtIOPCIProxy
*vpci_dev
)
898 V9fsPCIState
*dev
= VIRTIO_9P_PCI(vpci_dev
);
899 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
901 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
902 if (qdev_init(vdev
) < 0) {
908 static Property virtio_9p_pci_properties
[] = {
909 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
910 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
911 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 2),
912 DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy
, host_features
),
913 DEFINE_VIRTIO_9P_PROPERTIES(V9fsPCIState
, vdev
.fsconf
),
914 DEFINE_PROP_END_OF_LIST(),
917 static void virtio_9p_pci_class_init(ObjectClass
*klass
, void *data
)
919 DeviceClass
*dc
= DEVICE_CLASS(klass
);
920 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
921 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
923 k
->init
= virtio_9p_init_pci
;
924 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
925 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_9P
;
926 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
927 pcidev_k
->class_id
= 0x2;
928 dc
->props
= virtio_9p_pci_properties
;
931 static void virtio_9p_pci_instance_init(Object
*obj
)
933 V9fsPCIState
*dev
= VIRTIO_9P_PCI(obj
);
934 object_initialize(OBJECT(&dev
->vdev
), TYPE_VIRTIO_9P
);
935 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
938 static const TypeInfo virtio_9p_pci_info
= {
939 .name
= TYPE_VIRTIO_9P_PCI
,
940 .parent
= TYPE_VIRTIO_PCI
,
941 .instance_size
= sizeof(V9fsPCIState
),
942 .instance_init
= virtio_9p_pci_instance_init
,
943 .class_init
= virtio_9p_pci_class_init
,
945 #endif /* CONFIG_VIRTFS */
948 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
951 /* This is called by virtio-bus just after the device is plugged. */
952 static void virtio_pci_device_plugged(DeviceState
*d
)
954 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(d
);
955 VirtioBusState
*bus
= &proxy
->bus
;
959 proxy
->vdev
= bus
->vdev
;
961 config
= proxy
->pci_dev
.config
;
962 if (proxy
->class_code
) {
963 pci_config_set_class(config
, proxy
->class_code
);
965 pci_set_word(config
+ PCI_SUBSYSTEM_VENDOR_ID
,
966 pci_get_word(config
+ PCI_VENDOR_ID
));
967 pci_set_word(config
+ PCI_SUBSYSTEM_ID
, virtio_bus_get_vdev_id(bus
));
968 config
[PCI_INTERRUPT_PIN
] = 1;
970 if (proxy
->nvectors
&&
971 msix_init_exclusive_bar(&proxy
->pci_dev
, proxy
->nvectors
, 1)) {
975 proxy
->pci_dev
.config_write
= virtio_write_config
;
977 size
= VIRTIO_PCI_REGION_SIZE(&proxy
->pci_dev
)
978 + virtio_bus_get_vdev_config_len(bus
);
979 if (size
& (size
- 1)) {
980 size
= 1 << qemu_fls(size
);
983 memory_region_init_io(&proxy
->bar
, &virtio_pci_config_ops
, proxy
,
985 pci_register_bar(&proxy
->pci_dev
, 0, PCI_BASE_ADDRESS_SPACE_IO
,
988 if (!kvm_has_many_ioeventfds()) {
989 proxy
->flags
&= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD
;
992 proxy
->host_features
|= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY
;
993 proxy
->host_features
|= 0x1 << VIRTIO_F_BAD_FEATURE
;
994 proxy
->host_features
= virtio_bus_get_vdev_features(bus
,
995 proxy
->host_features
);
998 static int virtio_pci_init(PCIDevice
*pci_dev
)
1000 VirtIOPCIProxy
*dev
= VIRTIO_PCI(pci_dev
);
1001 VirtioPCIClass
*k
= VIRTIO_PCI_GET_CLASS(pci_dev
);
1002 virtio_pci_bus_new(&dev
->bus
, dev
);
1003 if (k
->init
!= NULL
) {
1004 return k
->init(dev
);
1009 static void virtio_pci_exit(PCIDevice
*pci_dev
)
1011 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(pci_dev
);
1012 virtio_pci_stop_ioeventfd(proxy
);
1013 memory_region_destroy(&proxy
->bar
);
1014 msix_uninit_exclusive_bar(pci_dev
);
1017 static void virtio_pci_reset(DeviceState
*qdev
)
1019 VirtIOPCIProxy
*proxy
= VIRTIO_PCI(qdev
);
1020 VirtioBusState
*bus
= VIRTIO_BUS(&proxy
->bus
);
1021 virtio_pci_stop_ioeventfd(proxy
);
1022 virtio_bus_reset(bus
);
1023 msix_unuse_all_vectors(&proxy
->pci_dev
);
1024 proxy
->flags
&= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG
;
1027 static void virtio_pci_class_init(ObjectClass
*klass
, void *data
)
1029 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1030 PCIDeviceClass
*k
= PCI_DEVICE_CLASS(klass
);
1032 k
->init
= virtio_pci_init
;
1033 k
->exit
= virtio_pci_exit
;
1034 k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1035 k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1036 k
->class_id
= PCI_CLASS_OTHERS
;
1037 dc
->reset
= virtio_pci_reset
;
1040 static const TypeInfo virtio_pci_info
= {
1041 .name
= TYPE_VIRTIO_PCI
,
1042 .parent
= TYPE_PCI_DEVICE
,
1043 .instance_size
= sizeof(VirtIOPCIProxy
),
1044 .class_init
= virtio_pci_class_init
,
1045 .class_size
= sizeof(VirtioPCIClass
),
1049 /* virtio-blk-pci */
1051 static Property virtio_blk_pci_properties
[] = {
1052 DEFINE_PROP_HEX32("class", VirtIOPCIProxy
, class_code
, 0),
1053 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1054 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
1055 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 2),
1056 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
1057 DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI
, blk
.data_plane
, 0, false),
1059 DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy
, host_features
),
1060 DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI
, blk
),
1061 DEFINE_PROP_END_OF_LIST(),
1064 static int virtio_blk_pci_init(VirtIOPCIProxy
*vpci_dev
)
1066 VirtIOBlkPCI
*dev
= VIRTIO_BLK_PCI(vpci_dev
);
1067 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1068 virtio_blk_set_conf(vdev
, &(dev
->blk
));
1069 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1070 if (qdev_init(vdev
) < 0) {
1076 static void virtio_blk_pci_class_init(ObjectClass
*klass
, void *data
)
1078 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1079 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1080 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1082 dc
->props
= virtio_blk_pci_properties
;
1083 k
->init
= virtio_blk_pci_init
;
1084 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1085 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_BLOCK
;
1086 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1087 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
1090 static void virtio_blk_pci_instance_init(Object
*obj
)
1092 VirtIOBlkPCI
*dev
= VIRTIO_BLK_PCI(obj
);
1093 object_initialize(OBJECT(&dev
->vdev
), TYPE_VIRTIO_BLK
);
1094 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
1097 static const TypeInfo virtio_blk_pci_info
= {
1098 .name
= TYPE_VIRTIO_BLK_PCI
,
1099 .parent
= TYPE_VIRTIO_PCI
,
1100 .instance_size
= sizeof(VirtIOBlkPCI
),
1101 .instance_init
= virtio_blk_pci_instance_init
,
1102 .class_init
= virtio_blk_pci_class_init
,
1105 /* virtio-scsi-pci */
1107 static Property virtio_scsi_pci_properties
[] = {
1108 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1109 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
1110 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
,
1111 DEV_NVECTORS_UNSPECIFIED
),
1112 DEFINE_VIRTIO_SCSI_FEATURES(VirtIOPCIProxy
, host_features
),
1113 DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIPCI
, vdev
.parent_obj
.conf
),
1114 DEFINE_PROP_END_OF_LIST(),
1117 static int virtio_scsi_pci_init_pci(VirtIOPCIProxy
*vpci_dev
)
1119 VirtIOSCSIPCI
*dev
= VIRTIO_SCSI_PCI(vpci_dev
);
1120 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1121 VirtIOSCSICommon
*vs
= VIRTIO_SCSI_COMMON(vdev
);
1123 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
1124 vpci_dev
->nvectors
= vs
->conf
.num_queues
+ 3;
1127 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1128 if (qdev_init(vdev
) < 0) {
1134 static void virtio_scsi_pci_class_init(ObjectClass
*klass
, void *data
)
1136 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1137 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1138 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1139 k
->init
= virtio_scsi_pci_init_pci
;
1140 dc
->props
= virtio_scsi_pci_properties
;
1141 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1142 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_SCSI
;
1143 pcidev_k
->revision
= 0x00;
1144 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
1147 static void virtio_scsi_pci_instance_init(Object
*obj
)
1149 VirtIOSCSIPCI
*dev
= VIRTIO_SCSI_PCI(obj
);
1150 object_initialize(OBJECT(&dev
->vdev
), TYPE_VIRTIO_SCSI
);
1151 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
1154 static const TypeInfo virtio_scsi_pci_info
= {
1155 .name
= TYPE_VIRTIO_SCSI_PCI
,
1156 .parent
= TYPE_VIRTIO_PCI
,
1157 .instance_size
= sizeof(VirtIOSCSIPCI
),
1158 .instance_init
= virtio_scsi_pci_instance_init
,
1159 .class_init
= virtio_scsi_pci_class_init
,
1162 /* vhost-scsi-pci */
1164 #ifdef CONFIG_VHOST_SCSI
1165 static Property vhost_scsi_pci_properties
[] = {
1166 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
,
1167 DEV_NVECTORS_UNSPECIFIED
),
1168 DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy
, host_features
),
1169 DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIPCI
, vdev
.parent_obj
.conf
),
1170 DEFINE_PROP_END_OF_LIST(),
1173 static int vhost_scsi_pci_init_pci(VirtIOPCIProxy
*vpci_dev
)
1175 VHostSCSIPCI
*dev
= VHOST_SCSI_PCI(vpci_dev
);
1176 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1177 VirtIOSCSICommon
*vs
= VIRTIO_SCSI_COMMON(vdev
);
1179 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
1180 vpci_dev
->nvectors
= vs
->conf
.num_queues
+ 3;
1183 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1184 if (qdev_init(vdev
) < 0) {
1190 static void vhost_scsi_pci_class_init(ObjectClass
*klass
, void *data
)
1192 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1193 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1194 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1195 k
->init
= vhost_scsi_pci_init_pci
;
1196 dc
->props
= vhost_scsi_pci_properties
;
1197 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1198 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_SCSI
;
1199 pcidev_k
->revision
= 0x00;
1200 pcidev_k
->class_id
= PCI_CLASS_STORAGE_SCSI
;
1203 static void vhost_scsi_pci_instance_init(Object
*obj
)
1205 VHostSCSIPCI
*dev
= VHOST_SCSI_PCI(obj
);
1206 object_initialize(OBJECT(&dev
->vdev
), TYPE_VHOST_SCSI
);
1207 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
1210 static const TypeInfo vhost_scsi_pci_info
= {
1211 .name
= TYPE_VHOST_SCSI_PCI
,
1212 .parent
= TYPE_VIRTIO_PCI
,
1213 .instance_size
= sizeof(VHostSCSIPCI
),
1214 .instance_init
= vhost_scsi_pci_instance_init
,
1215 .class_init
= vhost_scsi_pci_class_init
,
1219 /* virtio-balloon-pci */
1221 static void balloon_pci_stats_get_all(Object
*obj
, struct Visitor
*v
,
1222 void *opaque
, const char *name
,
1225 VirtIOBalloonPCI
*dev
= opaque
;
1226 object_property_get(OBJECT(&dev
->vdev
), v
, "guest-stats", errp
);
1229 static void balloon_pci_stats_get_poll_interval(Object
*obj
, struct Visitor
*v
,
1230 void *opaque
, const char *name
,
1233 VirtIOBalloonPCI
*dev
= opaque
;
1234 object_property_get(OBJECT(&dev
->vdev
), v
, "guest-stats-polling-interval",
1238 static void balloon_pci_stats_set_poll_interval(Object
*obj
, struct Visitor
*v
,
1239 void *opaque
, const char *name
,
1242 VirtIOBalloonPCI
*dev
= opaque
;
1243 object_property_set(OBJECT(&dev
->vdev
), v
, "guest-stats-polling-interval",
1247 static Property virtio_balloon_pci_properties
[] = {
1248 DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy
, host_features
),
1249 DEFINE_PROP_HEX32("class", VirtIOPCIProxy
, class_code
, 0),
1250 DEFINE_PROP_END_OF_LIST(),
1253 static int virtio_balloon_pci_init(VirtIOPCIProxy
*vpci_dev
)
1255 VirtIOBalloonPCI
*dev
= VIRTIO_BALLOON_PCI(vpci_dev
);
1256 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1258 if (vpci_dev
->class_code
!= PCI_CLASS_OTHERS
&&
1259 vpci_dev
->class_code
!= PCI_CLASS_MEMORY_RAM
) { /* qemu < 1.1 */
1260 vpci_dev
->class_code
= PCI_CLASS_OTHERS
;
1263 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1264 if (qdev_init(vdev
) < 0) {
1270 static void virtio_balloon_pci_class_init(ObjectClass
*klass
, void *data
)
1272 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1273 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1274 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1275 k
->init
= virtio_balloon_pci_init
;
1276 dc
->props
= virtio_balloon_pci_properties
;
1277 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1278 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_BALLOON
;
1279 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1280 pcidev_k
->class_id
= PCI_CLASS_OTHERS
;
1283 static void virtio_balloon_pci_instance_init(Object
*obj
)
1285 VirtIOBalloonPCI
*dev
= VIRTIO_BALLOON_PCI(obj
);
1286 object_initialize(OBJECT(&dev
->vdev
), TYPE_VIRTIO_BALLOON
);
1287 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
1289 object_property_add(obj
, "guest-stats", "guest statistics",
1290 balloon_pci_stats_get_all
, NULL
, NULL
, dev
,
1293 object_property_add(obj
, "guest-stats-polling-interval", "int",
1294 balloon_pci_stats_get_poll_interval
,
1295 balloon_pci_stats_set_poll_interval
,
1299 static const TypeInfo virtio_balloon_pci_info
= {
1300 .name
= TYPE_VIRTIO_BALLOON_PCI
,
1301 .parent
= TYPE_VIRTIO_PCI
,
1302 .instance_size
= sizeof(VirtIOBalloonPCI
),
1303 .instance_init
= virtio_balloon_pci_instance_init
,
1304 .class_init
= virtio_balloon_pci_class_init
,
1307 /* virtio-serial-pci */
1309 static int virtio_serial_pci_init(VirtIOPCIProxy
*vpci_dev
)
1311 VirtIOSerialPCI
*dev
= VIRTIO_SERIAL_PCI(vpci_dev
);
1312 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1314 if (vpci_dev
->class_code
!= PCI_CLASS_COMMUNICATION_OTHER
&&
1315 vpci_dev
->class_code
!= PCI_CLASS_DISPLAY_OTHER
&& /* qemu 0.10 */
1316 vpci_dev
->class_code
!= PCI_CLASS_OTHERS
) { /* qemu-kvm */
1317 vpci_dev
->class_code
= PCI_CLASS_COMMUNICATION_OTHER
;
1320 /* backwards-compatibility with machines that were created with
1321 DEV_NVECTORS_UNSPECIFIED */
1322 if (vpci_dev
->nvectors
== DEV_NVECTORS_UNSPECIFIED
) {
1323 vpci_dev
->nvectors
= dev
->vdev
.serial
.max_virtserial_ports
+ 1;
1326 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1327 if (qdev_init(vdev
) < 0) {
1333 static Property virtio_serial_pci_properties
[] = {
1334 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1335 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, true),
1336 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 2),
1337 DEFINE_PROP_HEX32("class", VirtIOPCIProxy
, class_code
, 0),
1338 DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy
, host_features
),
1339 DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialPCI
, vdev
.serial
),
1340 DEFINE_PROP_END_OF_LIST(),
1343 static void virtio_serial_pci_class_init(ObjectClass
*klass
, void *data
)
1345 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1346 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1347 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1348 k
->init
= virtio_serial_pci_init
;
1349 dc
->props
= virtio_serial_pci_properties
;
1350 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1351 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_CONSOLE
;
1352 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1353 pcidev_k
->class_id
= PCI_CLASS_COMMUNICATION_OTHER
;
1356 static void virtio_serial_pci_instance_init(Object
*obj
)
1358 VirtIOSerialPCI
*dev
= VIRTIO_SERIAL_PCI(obj
);
1359 object_initialize(OBJECT(&dev
->vdev
), TYPE_VIRTIO_SERIAL
);
1360 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
1363 static const TypeInfo virtio_serial_pci_info
= {
1364 .name
= TYPE_VIRTIO_SERIAL_PCI
,
1365 .parent
= TYPE_VIRTIO_PCI
,
1366 .instance_size
= sizeof(VirtIOSerialPCI
),
1367 .instance_init
= virtio_serial_pci_instance_init
,
1368 .class_init
= virtio_serial_pci_class_init
,
1371 /* virtio-net-pci */
1373 static Property virtio_net_properties
[] = {
1374 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy
, flags
,
1375 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT
, false),
1376 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy
, nvectors
, 3),
1377 DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy
, host_features
),
1378 DEFINE_NIC_PROPERTIES(VirtIONetPCI
, vdev
.nic_conf
),
1379 DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetPCI
, vdev
.net_conf
),
1380 DEFINE_PROP_END_OF_LIST(),
1383 static int virtio_net_pci_init(VirtIOPCIProxy
*vpci_dev
)
1385 VirtIONetPCI
*dev
= VIRTIO_NET_PCI(vpci_dev
);
1386 DeviceState
*vdev
= DEVICE(&dev
->vdev
);
1388 virtio_net_set_config_size(&dev
->vdev
, vpci_dev
->host_features
);
1389 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1390 if (qdev_init(vdev
) < 0) {
1396 static void virtio_net_pci_class_init(ObjectClass
*klass
, void *data
)
1398 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1399 PCIDeviceClass
*k
= PCI_DEVICE_CLASS(klass
);
1400 VirtioPCIClass
*vpciklass
= VIRTIO_PCI_CLASS(klass
);
1402 k
->romfile
= "efi-virtio.rom";
1403 k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1404 k
->device_id
= PCI_DEVICE_ID_VIRTIO_NET
;
1405 k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1406 k
->class_id
= PCI_CLASS_NETWORK_ETHERNET
;
1407 dc
->props
= virtio_net_properties
;
1408 vpciklass
->init
= virtio_net_pci_init
;
1411 static void virtio_net_pci_instance_init(Object
*obj
)
1413 VirtIONetPCI
*dev
= VIRTIO_NET_PCI(obj
);
1414 object_initialize(OBJECT(&dev
->vdev
), TYPE_VIRTIO_NET
);
1415 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
1418 static const TypeInfo virtio_net_pci_info
= {
1419 .name
= TYPE_VIRTIO_NET_PCI
,
1420 .parent
= TYPE_VIRTIO_PCI
,
1421 .instance_size
= sizeof(VirtIONetPCI
),
1422 .instance_init
= virtio_net_pci_instance_init
,
1423 .class_init
= virtio_net_pci_class_init
,
1426 /* virtio-rng-pci */
1428 static Property virtio_rng_pci_properties
[] = {
1429 DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy
, host_features
),
1430 DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORngPCI
, vdev
.conf
),
1431 DEFINE_PROP_END_OF_LIST(),
1434 static int virtio_rng_pci_init(VirtIOPCIProxy
*vpci_dev
)
1436 VirtIORngPCI
*vrng
= VIRTIO_RNG_PCI(vpci_dev
);
1437 DeviceState
*vdev
= DEVICE(&vrng
->vdev
);
1439 qdev_set_parent_bus(vdev
, BUS(&vpci_dev
->bus
));
1440 if (qdev_init(vdev
) < 0) {
1444 object_property_set_link(OBJECT(vrng
),
1445 OBJECT(vrng
->vdev
.conf
.default_backend
), "rng",
1451 static void virtio_rng_pci_class_init(ObjectClass
*klass
, void *data
)
1453 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1454 VirtioPCIClass
*k
= VIRTIO_PCI_CLASS(klass
);
1455 PCIDeviceClass
*pcidev_k
= PCI_DEVICE_CLASS(klass
);
1457 k
->init
= virtio_rng_pci_init
;
1458 dc
->props
= virtio_rng_pci_properties
;
1460 pcidev_k
->vendor_id
= PCI_VENDOR_ID_REDHAT_QUMRANET
;
1461 pcidev_k
->device_id
= PCI_DEVICE_ID_VIRTIO_RNG
;
1462 pcidev_k
->revision
= VIRTIO_PCI_ABI_VERSION
;
1463 pcidev_k
->class_id
= PCI_CLASS_OTHERS
;
1466 static void virtio_rng_initfn(Object
*obj
)
1468 VirtIORngPCI
*dev
= VIRTIO_RNG_PCI(obj
);
1469 object_initialize(OBJECT(&dev
->vdev
), TYPE_VIRTIO_RNG
);
1470 object_property_add_child(obj
, "virtio-backend", OBJECT(&dev
->vdev
), NULL
);
1471 object_property_add_link(obj
, "rng", TYPE_RNG_BACKEND
,
1472 (Object
**)&dev
->vdev
.conf
.rng
, NULL
);
1476 static const TypeInfo virtio_rng_pci_info
= {
1477 .name
= TYPE_VIRTIO_RNG_PCI
,
1478 .parent
= TYPE_VIRTIO_PCI
,
1479 .instance_size
= sizeof(VirtIORngPCI
),
1480 .instance_init
= virtio_rng_initfn
,
1481 .class_init
= virtio_rng_pci_class_init
,
1484 /* virtio-pci-bus */
1486 static void virtio_pci_bus_new(VirtioBusState
*bus
, VirtIOPCIProxy
*dev
)
1488 DeviceState
*qdev
= DEVICE(dev
);
1490 qbus_create_inplace((BusState
*)bus
, TYPE_VIRTIO_PCI_BUS
, qdev
, NULL
);
1492 qbus
->allow_hotplug
= 1;
1495 static void virtio_pci_bus_class_init(ObjectClass
*klass
, void *data
)
1497 BusClass
*bus_class
= BUS_CLASS(klass
);
1498 VirtioBusClass
*k
= VIRTIO_BUS_CLASS(klass
);
1499 bus_class
->max_dev
= 1;
1500 k
->notify
= virtio_pci_notify
;
1501 k
->save_config
= virtio_pci_save_config
;
1502 k
->load_config
= virtio_pci_load_config
;
1503 k
->save_queue
= virtio_pci_save_queue
;
1504 k
->load_queue
= virtio_pci_load_queue
;
1505 k
->get_features
= virtio_pci_get_features
;
1506 k
->query_guest_notifiers
= virtio_pci_query_guest_notifiers
;
1507 k
->set_host_notifier
= virtio_pci_set_host_notifier
;
1508 k
->set_guest_notifiers
= virtio_pci_set_guest_notifiers
;
1509 k
->vmstate_change
= virtio_pci_vmstate_change
;
1510 k
->device_plugged
= virtio_pci_device_plugged
;
1513 static const TypeInfo virtio_pci_bus_info
= {
1514 .name
= TYPE_VIRTIO_PCI_BUS
,
1515 .parent
= TYPE_VIRTIO_BUS
,
1516 .instance_size
= sizeof(VirtioPCIBusState
),
1517 .class_init
= virtio_pci_bus_class_init
,
1520 static void virtio_pci_register_types(void)
1522 type_register_static(&virtio_rng_pci_info
);
1523 type_register_static(&virtio_pci_bus_info
);
1524 type_register_static(&virtio_pci_info
);
1525 #ifdef CONFIG_VIRTFS
1526 type_register_static(&virtio_9p_pci_info
);
1528 type_register_static(&virtio_blk_pci_info
);
1529 type_register_static(&virtio_scsi_pci_info
);
1530 type_register_static(&virtio_balloon_pci_info
);
1531 type_register_static(&virtio_serial_pci_info
);
1532 type_register_static(&virtio_net_pci_info
);
1533 #ifdef CONFIG_VHOST_SCSI
1534 type_register_static(&vhost_scsi_pci_info
);
1538 type_init(virtio_pci_register_types
)