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.
18 #include "qemu/osdep.h"
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 "qapi/error.h"
30 #include "qemu/error-report.h"
31 #include "hw/pci/msi.h"
32 #include "hw/pci/msix.h"
33 #include "hw/loader.h"
34 #include "sysemu/kvm.h"
35 #include "sysemu/block-backend.h"
36 #include "virtio-pci.h"
37 #include "qemu/range.h"
38 #include "hw/virtio/virtio-bus.h"
39 #include "qapi/visitor.h"
41 #define VIRTIO_PCI_REGION_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_present(dev))
43 #undef VIRTIO_PCI_CONFIG
45 /* The remaining space is defined by each driver as the per-driver
46 * configuration space */
47 #define VIRTIO_PCI_CONFIG_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_enabled(dev))
49 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
51 static void virtio_pci_reset(DeviceState *qdev);
54 /* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */
55 static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d)
57 return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
60 /* DeviceState to VirtIOPCIProxy. Note: used on datapath,
61 * be careful and test performance if you change this.
63 static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d)
65 return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
68 static void virtio_pci_notify(DeviceState *d, uint16_t vector)
70 VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d);
72 if (msix_enabled(&proxy->pci_dev))
73 msix_notify(&proxy->pci_dev, vector);
75 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
76 pci_set_irq(&proxy->pci_dev, vdev->isr & 1);
80 static void virtio_pci_save_config(DeviceState *d, QEMUFile *f)
82 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
83 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
85 pci_device_save(&proxy->pci_dev, f);
86 msix_save(&proxy->pci_dev, f);
87 if (msix_present(&proxy->pci_dev))
88 qemu_put_be16(f, vdev->config_vector);
91 static void virtio_pci_load_modern_queue_state(VirtIOPCIQueue *vq,
94 vq->num = qemu_get_be16(f);
95 vq->enabled = qemu_get_be16(f);
96 vq->desc[0] = qemu_get_be32(f);
97 vq->desc[1] = qemu_get_be32(f);
98 vq->avail[0] = qemu_get_be32(f);
99 vq->avail[1] = qemu_get_be32(f);
100 vq->used[0] = qemu_get_be32(f);
101 vq->used[1] = qemu_get_be32(f);
104 static bool virtio_pci_has_extra_state(DeviceState *d)
106 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
108 return proxy->flags & VIRTIO_PCI_FLAG_MIGRATE_EXTRA;
111 static int get_virtio_pci_modern_state(QEMUFile *f, void *pv, size_t size)
113 VirtIOPCIProxy *proxy = pv;
116 proxy->dfselect = qemu_get_be32(f);
117 proxy->gfselect = qemu_get_be32(f);
118 proxy->guest_features[0] = qemu_get_be32(f);
119 proxy->guest_features[1] = qemu_get_be32(f);
120 for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
121 virtio_pci_load_modern_queue_state(&proxy->vqs[i], f);
127 static void virtio_pci_save_modern_queue_state(VirtIOPCIQueue *vq,
130 qemu_put_be16(f, vq->num);
131 qemu_put_be16(f, vq->enabled);
132 qemu_put_be32(f, vq->desc[0]);
133 qemu_put_be32(f, vq->desc[1]);
134 qemu_put_be32(f, vq->avail[0]);
135 qemu_put_be32(f, vq->avail[1]);
136 qemu_put_be32(f, vq->used[0]);
137 qemu_put_be32(f, vq->used[1]);
140 static void put_virtio_pci_modern_state(QEMUFile *f, void *pv, size_t size)
142 VirtIOPCIProxy *proxy = pv;
145 qemu_put_be32(f, proxy->dfselect);
146 qemu_put_be32(f, proxy->gfselect);
147 qemu_put_be32(f, proxy->guest_features[0]);
148 qemu_put_be32(f, proxy->guest_features[1]);
149 for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
150 virtio_pci_save_modern_queue_state(&proxy->vqs[i], f);
154 static const VMStateInfo vmstate_info_virtio_pci_modern_state = {
155 .name = "virtqueue_state",
156 .get = get_virtio_pci_modern_state,
157 .put = put_virtio_pci_modern_state,
160 static bool virtio_pci_modern_state_needed(void *opaque)
162 VirtIOPCIProxy *proxy = opaque;
164 return !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_MODERN);
167 static const VMStateDescription vmstate_virtio_pci_modern_state = {
168 .name = "virtio_pci/modern_state",
170 .minimum_version_id = 1,
171 .needed = &virtio_pci_modern_state_needed,
172 .fields = (VMStateField[]) {
174 .name = "modern_state",
176 .field_exists = NULL,
178 .info = &vmstate_info_virtio_pci_modern_state,
182 VMSTATE_END_OF_LIST()
186 static const VMStateDescription vmstate_virtio_pci = {
187 .name = "virtio_pci",
189 .minimum_version_id = 1,
190 .minimum_version_id_old = 1,
191 .fields = (VMStateField[]) {
192 VMSTATE_END_OF_LIST()
194 .subsections = (const VMStateDescription*[]) {
195 &vmstate_virtio_pci_modern_state,
200 static void virtio_pci_save_extra_state(DeviceState *d, QEMUFile *f)
202 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
204 vmstate_save_state(f, &vmstate_virtio_pci, proxy, NULL);
207 static int virtio_pci_load_extra_state(DeviceState *d, QEMUFile *f)
209 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
211 return vmstate_load_state(f, &vmstate_virtio_pci, proxy, 1);
214 static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f)
216 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
217 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
219 if (msix_present(&proxy->pci_dev))
220 qemu_put_be16(f, virtio_queue_vector(vdev, n));
223 static int virtio_pci_load_config(DeviceState *d, QEMUFile *f)
225 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
226 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
229 ret = pci_device_load(&proxy->pci_dev, f);
233 msix_unuse_all_vectors(&proxy->pci_dev);
234 msix_load(&proxy->pci_dev, f);
235 if (msix_present(&proxy->pci_dev)) {
236 qemu_get_be16s(f, &vdev->config_vector);
238 vdev->config_vector = VIRTIO_NO_VECTOR;
240 if (vdev->config_vector != VIRTIO_NO_VECTOR) {
241 return msix_vector_use(&proxy->pci_dev, vdev->config_vector);
246 static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f)
248 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
249 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
252 if (msix_present(&proxy->pci_dev)) {
253 qemu_get_be16s(f, &vector);
255 vector = VIRTIO_NO_VECTOR;
257 virtio_queue_set_vector(vdev, n, vector);
258 if (vector != VIRTIO_NO_VECTOR) {
259 return msix_vector_use(&proxy->pci_dev, vector);
265 #define QEMU_VIRTIO_PCI_QUEUE_MEM_MULT 0x1000
267 static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy,
268 int n, bool assign, bool set_handler)
270 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
271 VirtQueue *vq = virtio_get_queue(vdev, n);
272 EventNotifier *notifier = virtio_queue_get_host_notifier(vq);
273 bool legacy = !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_LEGACY);
274 bool modern = !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_MODERN);
275 bool fast_mmio = kvm_ioeventfd_any_length_enabled();
276 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
277 MemoryRegion *modern_mr = &proxy->notify.mr;
278 MemoryRegion *modern_notify_mr = &proxy->notify_pio.mr;
279 MemoryRegion *legacy_mr = &proxy->bar;
280 hwaddr modern_addr = QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
281 virtio_get_queue_index(vq);
282 hwaddr legacy_addr = VIRTIO_PCI_QUEUE_NOTIFY;
286 r = event_notifier_init(notifier, 1);
288 error_report("%s: unable to init event notifier: %d",
292 virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
295 memory_region_add_eventfd(modern_mr, modern_addr, 0,
298 memory_region_add_eventfd(modern_mr, modern_addr, 2,
302 memory_region_add_eventfd(modern_notify_mr, 0, 2,
307 memory_region_add_eventfd(legacy_mr, legacy_addr, 2,
313 memory_region_del_eventfd(modern_mr, modern_addr, 0,
316 memory_region_del_eventfd(modern_mr, modern_addr, 2,
320 memory_region_del_eventfd(modern_notify_mr, 0, 2,
325 memory_region_del_eventfd(legacy_mr, legacy_addr, 2,
328 virtio_queue_set_host_notifier_fd_handler(vq, false, false);
329 event_notifier_cleanup(notifier);
334 static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy)
336 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
339 if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) ||
340 proxy->ioeventfd_disabled ||
341 proxy->ioeventfd_started) {
345 for (n = 0; n < VIRTIO_QUEUE_MAX; n++) {
346 if (!virtio_queue_get_num(vdev, n)) {
350 r = virtio_pci_set_host_notifier_internal(proxy, n, true, true);
355 proxy->ioeventfd_started = true;
360 if (!virtio_queue_get_num(vdev, n)) {
364 r = virtio_pci_set_host_notifier_internal(proxy, n, false, false);
367 proxy->ioeventfd_started = false;
368 error_report("%s: failed. Fallback to a userspace (slower).", __func__);
371 static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy)
373 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
377 if (!proxy->ioeventfd_started) {
381 for (n = 0; n < VIRTIO_QUEUE_MAX; n++) {
382 if (!virtio_queue_get_num(vdev, n)) {
386 r = virtio_pci_set_host_notifier_internal(proxy, n, false, false);
389 proxy->ioeventfd_started = false;
392 static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
394 VirtIOPCIProxy *proxy = opaque;
395 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
399 case VIRTIO_PCI_GUEST_FEATURES:
400 /* Guest does not negotiate properly? We have to assume nothing. */
401 if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
402 val = virtio_bus_get_vdev_bad_features(&proxy->bus);
404 virtio_set_features(vdev, val);
406 case VIRTIO_PCI_QUEUE_PFN:
407 pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
409 virtio_pci_reset(DEVICE(proxy));
412 virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
414 case VIRTIO_PCI_QUEUE_SEL:
415 if (val < VIRTIO_QUEUE_MAX)
416 vdev->queue_sel = val;
418 case VIRTIO_PCI_QUEUE_NOTIFY:
419 if (val < VIRTIO_QUEUE_MAX) {
420 virtio_queue_notify(vdev, val);
423 case VIRTIO_PCI_STATUS:
424 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
425 virtio_pci_stop_ioeventfd(proxy);
428 virtio_set_status(vdev, val & 0xFF);
430 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
431 virtio_pci_start_ioeventfd(proxy);
434 if (vdev->status == 0) {
435 virtio_pci_reset(DEVICE(proxy));
438 /* Linux before 2.6.34 drives the device without enabling
439 the PCI device bus master bit. Enable it automatically
440 for the guest. This is a PCI spec violation but so is
441 initiating DMA with bus master bit clear. */
442 if (val == (VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER)) {
443 pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
444 proxy->pci_dev.config[PCI_COMMAND] |
445 PCI_COMMAND_MASTER, 1);
448 case VIRTIO_MSI_CONFIG_VECTOR:
449 msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
450 /* Make it possible for guest to discover an error took place. */
451 if (msix_vector_use(&proxy->pci_dev, val) < 0)
452 val = VIRTIO_NO_VECTOR;
453 vdev->config_vector = val;
455 case VIRTIO_MSI_QUEUE_VECTOR:
456 msix_vector_unuse(&proxy->pci_dev,
457 virtio_queue_vector(vdev, vdev->queue_sel));
458 /* Make it possible for guest to discover an error took place. */
459 if (msix_vector_use(&proxy->pci_dev, val) < 0)
460 val = VIRTIO_NO_VECTOR;
461 virtio_queue_set_vector(vdev, vdev->queue_sel, val);
464 error_report("%s: unexpected address 0x%x value 0x%x",
465 __func__, addr, val);
470 static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
472 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
473 uint32_t ret = 0xFFFFFFFF;
476 case VIRTIO_PCI_HOST_FEATURES:
477 ret = vdev->host_features;
479 case VIRTIO_PCI_GUEST_FEATURES:
480 ret = vdev->guest_features;
482 case VIRTIO_PCI_QUEUE_PFN:
483 ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
484 >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
486 case VIRTIO_PCI_QUEUE_NUM:
487 ret = virtio_queue_get_num(vdev, vdev->queue_sel);
489 case VIRTIO_PCI_QUEUE_SEL:
490 ret = vdev->queue_sel;
492 case VIRTIO_PCI_STATUS:
496 /* reading from the ISR also clears it. */
499 pci_irq_deassert(&proxy->pci_dev);
501 case VIRTIO_MSI_CONFIG_VECTOR:
502 ret = vdev->config_vector;
504 case VIRTIO_MSI_QUEUE_VECTOR:
505 ret = virtio_queue_vector(vdev, vdev->queue_sel);
514 static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr,
517 VirtIOPCIProxy *proxy = opaque;
518 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
519 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
522 return virtio_ioport_read(proxy, addr);
528 val = virtio_config_readb(vdev, addr);
531 val = virtio_config_readw(vdev, addr);
532 if (virtio_is_big_endian(vdev)) {
537 val = virtio_config_readl(vdev, addr);
538 if (virtio_is_big_endian(vdev)) {
546 static void virtio_pci_config_write(void *opaque, hwaddr addr,
547 uint64_t val, unsigned size)
549 VirtIOPCIProxy *proxy = opaque;
550 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
551 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
553 virtio_ioport_write(proxy, addr, val);
558 * Virtio-PCI is odd. Ioports are LE but config space is target native
563 virtio_config_writeb(vdev, addr, val);
566 if (virtio_is_big_endian(vdev)) {
569 virtio_config_writew(vdev, addr, val);
572 if (virtio_is_big_endian(vdev)) {
575 virtio_config_writel(vdev, addr, val);
580 static const MemoryRegionOps virtio_pci_config_ops = {
581 .read = virtio_pci_config_read,
582 .write = virtio_pci_config_write,
584 .min_access_size = 1,
585 .max_access_size = 4,
587 .endianness = DEVICE_LITTLE_ENDIAN,
590 /* Below are generic functions to do memcpy from/to an address space,
591 * without byteswaps, with input validation.
593 * As regular address_space_* APIs all do some kind of byteswap at least for
594 * some host/target combinations, we are forced to explicitly convert to a
595 * known-endianness integer value.
596 * It doesn't really matter which endian format to go through, so the code
597 * below selects the endian that causes the least amount of work on the given
600 * Note: host pointer must be aligned.
603 void virtio_address_space_write(AddressSpace *as, hwaddr addr,
604 const uint8_t *buf, int len)
608 /* address_space_* APIs assume an aligned address.
609 * As address is under guest control, handle illegal values.
613 /* Make sure caller aligned buf properly */
614 assert(!(((uintptr_t)buf) & (len - 1)));
618 val = pci_get_byte(buf);
619 address_space_stb(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
622 val = pci_get_word(buf);
623 address_space_stw_le(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
626 val = pci_get_long(buf);
627 address_space_stl_le(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
630 /* As length is under guest control, handle illegal values. */
636 virtio_address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len)
640 /* address_space_* APIs assume an aligned address.
641 * As address is under guest control, handle illegal values.
645 /* Make sure caller aligned buf properly */
646 assert(!(((uintptr_t)buf) & (len - 1)));
650 val = address_space_ldub(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
651 pci_set_byte(buf, val);
654 val = address_space_lduw_le(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
655 pci_set_word(buf, val);
658 val = address_space_ldl_le(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
659 pci_set_long(buf, val);
662 /* As length is under guest control, handle illegal values. */
667 static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
668 uint32_t val, int len)
670 VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
671 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
672 struct virtio_pci_cfg_cap *cfg;
674 pci_default_write_config(pci_dev, address, val, len);
676 if (range_covers_byte(address, len, PCI_COMMAND) &&
677 !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
678 virtio_pci_stop_ioeventfd(proxy);
679 virtio_set_status(vdev, vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK);
682 if (proxy->config_cap &&
683 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
685 sizeof cfg->pci_cfg_data)) {
689 cfg = (void *)(proxy->pci_dev.config + proxy->config_cap);
690 off = le32_to_cpu(cfg->cap.offset);
691 len = le32_to_cpu(cfg->cap.length);
693 if (len == 1 || len == 2 || len == 4) {
694 assert(len <= sizeof cfg->pci_cfg_data);
695 virtio_address_space_write(&proxy->modern_as, off,
696 cfg->pci_cfg_data, len);
701 static uint32_t virtio_read_config(PCIDevice *pci_dev,
702 uint32_t address, int len)
704 VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
705 struct virtio_pci_cfg_cap *cfg;
707 if (proxy->config_cap &&
708 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
710 sizeof cfg->pci_cfg_data)) {
714 cfg = (void *)(proxy->pci_dev.config + proxy->config_cap);
715 off = le32_to_cpu(cfg->cap.offset);
716 len = le32_to_cpu(cfg->cap.length);
718 if (len == 1 || len == 2 || len == 4) {
719 assert(len <= sizeof cfg->pci_cfg_data);
720 virtio_address_space_read(&proxy->modern_as, off,
721 cfg->pci_cfg_data, len);
725 return pci_default_read_config(pci_dev, address, len);
728 static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy,
729 unsigned int queue_no,
733 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
736 if (irqfd->users == 0) {
737 ret = kvm_irqchip_add_msi_route(kvm_state, msg, &proxy->pci_dev);
747 static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy,
750 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
751 if (--irqfd->users == 0) {
752 kvm_irqchip_release_virq(kvm_state, irqfd->virq);
756 static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy,
757 unsigned int queue_no,
760 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
761 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
762 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
763 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
764 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, irqfd->virq);
767 static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy,
768 unsigned int queue_no,
771 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
772 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
773 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
774 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
777 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, n, irqfd->virq);
781 static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
783 PCIDevice *dev = &proxy->pci_dev;
784 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
785 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
790 for (queue_no = 0; queue_no < nvqs; queue_no++) {
791 if (!virtio_queue_get_num(vdev, queue_no)) {
794 vector = virtio_queue_vector(vdev, queue_no);
795 if (vector >= msix_nr_vectors_allocated(dev)) {
798 msg = msix_get_message(dev, vector);
799 ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg);
803 /* If guest supports masking, set up irqfd now.
804 * Otherwise, delay until unmasked in the frontend.
806 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
807 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
809 kvm_virtio_pci_vq_vector_release(proxy, vector);
817 while (--queue_no >= 0) {
818 vector = virtio_queue_vector(vdev, queue_no);
819 if (vector >= msix_nr_vectors_allocated(dev)) {
822 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
823 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
825 kvm_virtio_pci_vq_vector_release(proxy, vector);
830 static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
832 PCIDevice *dev = &proxy->pci_dev;
833 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
836 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
838 for (queue_no = 0; queue_no < nvqs; queue_no++) {
839 if (!virtio_queue_get_num(vdev, queue_no)) {
842 vector = virtio_queue_vector(vdev, queue_no);
843 if (vector >= msix_nr_vectors_allocated(dev)) {
846 /* If guest supports masking, clean up irqfd now.
847 * Otherwise, it was cleaned when masked in the frontend.
849 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
850 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
852 kvm_virtio_pci_vq_vector_release(proxy, vector);
856 static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy,
857 unsigned int queue_no,
861 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
862 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
863 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
864 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
868 if (proxy->vector_irqfd) {
869 irqfd = &proxy->vector_irqfd[vector];
870 if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) {
871 ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg,
879 /* If guest supports masking, irqfd is already setup, unmask it.
880 * Otherwise, set it up now.
882 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
883 k->guest_notifier_mask(vdev, queue_no, false);
884 /* Test after unmasking to avoid losing events. */
885 if (k->guest_notifier_pending &&
886 k->guest_notifier_pending(vdev, queue_no)) {
887 event_notifier_set(n);
890 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
895 static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy,
896 unsigned int queue_no,
899 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
900 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
902 /* If guest supports masking, keep irqfd but mask it.
903 * Otherwise, clean it up now.
905 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
906 k->guest_notifier_mask(vdev, queue_no, true);
908 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
912 static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
915 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
916 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
917 VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
918 int ret, index, unmasked = 0;
921 index = virtio_get_queue_index(vq);
922 if (!virtio_queue_get_num(vdev, index)) {
925 if (index < proxy->nvqs_with_notifiers) {
926 ret = virtio_pci_vq_vector_unmask(proxy, index, vector, msg);
932 vq = virtio_vector_next_queue(vq);
938 vq = virtio_vector_first_queue(vdev, vector);
939 while (vq && unmasked >= 0) {
940 index = virtio_get_queue_index(vq);
941 if (index < proxy->nvqs_with_notifiers) {
942 virtio_pci_vq_vector_mask(proxy, index, vector);
945 vq = virtio_vector_next_queue(vq);
950 static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector)
952 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
953 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
954 VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
958 index = virtio_get_queue_index(vq);
959 if (!virtio_queue_get_num(vdev, index)) {
962 if (index < proxy->nvqs_with_notifiers) {
963 virtio_pci_vq_vector_mask(proxy, index, vector);
965 vq = virtio_vector_next_queue(vq);
969 static void virtio_pci_vector_poll(PCIDevice *dev,
970 unsigned int vector_start,
971 unsigned int vector_end)
973 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
974 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
975 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
978 EventNotifier *notifier;
981 for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) {
982 if (!virtio_queue_get_num(vdev, queue_no)) {
985 vector = virtio_queue_vector(vdev, queue_no);
986 if (vector < vector_start || vector >= vector_end ||
987 !msix_is_masked(dev, vector)) {
990 vq = virtio_get_queue(vdev, queue_no);
991 notifier = virtio_queue_get_guest_notifier(vq);
992 if (k->guest_notifier_pending) {
993 if (k->guest_notifier_pending(vdev, queue_no)) {
994 msix_set_pending(dev, vector);
996 } else if (event_notifier_test_and_clear(notifier)) {
997 msix_set_pending(dev, vector);
1002 static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
1005 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1006 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1007 VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
1008 VirtQueue *vq = virtio_get_queue(vdev, n);
1009 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1012 int r = event_notifier_init(notifier, 0);
1016 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
1018 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
1019 event_notifier_cleanup(notifier);
1022 if (!msix_enabled(&proxy->pci_dev) &&
1023 vdev->use_guest_notifier_mask &&
1024 vdc->guest_notifier_mask) {
1025 vdc->guest_notifier_mask(vdev, n, !assign);
1031 static bool virtio_pci_query_guest_notifiers(DeviceState *d)
1033 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1034 return msix_enabled(&proxy->pci_dev);
1037 static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
1039 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1040 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1041 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
1043 bool with_irqfd = msix_enabled(&proxy->pci_dev) &&
1044 kvm_msi_via_irqfd_enabled();
1046 nvqs = MIN(nvqs, VIRTIO_QUEUE_MAX);
1048 /* When deassigning, pass a consistent nvqs value
1049 * to avoid leaking notifiers.
1051 assert(assign || nvqs == proxy->nvqs_with_notifiers);
1053 proxy->nvqs_with_notifiers = nvqs;
1055 /* Must unset vector notifier while guest notifier is still assigned */
1056 if ((proxy->vector_irqfd || k->guest_notifier_mask) && !assign) {
1057 msix_unset_vector_notifiers(&proxy->pci_dev);
1058 if (proxy->vector_irqfd) {
1059 kvm_virtio_pci_vector_release(proxy, nvqs);
1060 g_free(proxy->vector_irqfd);
1061 proxy->vector_irqfd = NULL;
1065 for (n = 0; n < nvqs; n++) {
1066 if (!virtio_queue_get_num(vdev, n)) {
1070 r = virtio_pci_set_guest_notifier(d, n, assign, with_irqfd);
1076 /* Must set vector notifier after guest notifier has been assigned */
1077 if ((with_irqfd || k->guest_notifier_mask) && assign) {
1079 proxy->vector_irqfd =
1080 g_malloc0(sizeof(*proxy->vector_irqfd) *
1081 msix_nr_vectors_allocated(&proxy->pci_dev));
1082 r = kvm_virtio_pci_vector_use(proxy, nvqs);
1087 r = msix_set_vector_notifiers(&proxy->pci_dev,
1088 virtio_pci_vector_unmask,
1089 virtio_pci_vector_mask,
1090 virtio_pci_vector_poll);
1092 goto notifiers_error;
1101 kvm_virtio_pci_vector_release(proxy, nvqs);
1105 /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
1108 virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd);
1113 static int virtio_pci_set_host_notifier(DeviceState *d, int n, bool assign)
1115 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1117 /* Stop using ioeventfd for virtqueue kick if the device starts using host
1118 * notifiers. This makes it easy to avoid stepping on each others' toes.
1120 proxy->ioeventfd_disabled = assign;
1122 virtio_pci_stop_ioeventfd(proxy);
1124 /* We don't need to start here: it's not needed because backend
1125 * currently only stops on status change away from ok,
1126 * reset, vmstop and such. If we do add code to start here,
1127 * need to check vmstate, device state etc. */
1128 return virtio_pci_set_host_notifier_internal(proxy, n, assign, false);
1131 static void virtio_pci_vmstate_change(DeviceState *d, bool running)
1133 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1134 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1137 /* Old QEMU versions did not set bus master enable on status write.
1138 * Detect DRIVER set and enable it.
1140 if ((proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION) &&
1141 (vdev->status & VIRTIO_CONFIG_S_DRIVER) &&
1142 !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
1143 pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
1144 proxy->pci_dev.config[PCI_COMMAND] |
1145 PCI_COMMAND_MASTER, 1);
1147 virtio_pci_start_ioeventfd(proxy);
1149 virtio_pci_stop_ioeventfd(proxy);
1153 #ifdef CONFIG_VIRTFS
1154 static void virtio_9p_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1156 V9fsPCIState *dev = VIRTIO_9P_PCI(vpci_dev);
1157 DeviceState *vdev = DEVICE(&dev->vdev);
1159 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1160 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1163 static Property virtio_9p_pci_properties[] = {
1164 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1165 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1166 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
1167 DEFINE_PROP_END_OF_LIST(),
1170 static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
1172 DeviceClass *dc = DEVICE_CLASS(klass);
1173 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1174 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1176 k->realize = virtio_9p_pci_realize;
1177 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1178 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
1179 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
1180 pcidev_k->class_id = 0x2;
1181 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1182 dc->props = virtio_9p_pci_properties;
1185 static void virtio_9p_pci_instance_init(Object *obj)
1187 V9fsPCIState *dev = VIRTIO_9P_PCI(obj);
1189 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1193 static const TypeInfo virtio_9p_pci_info = {
1194 .name = TYPE_VIRTIO_9P_PCI,
1195 .parent = TYPE_VIRTIO_PCI,
1196 .instance_size = sizeof(V9fsPCIState),
1197 .instance_init = virtio_9p_pci_instance_init,
1198 .class_init = virtio_9p_pci_class_init,
1200 #endif /* CONFIG_VIRTFS */
1203 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
1206 static int virtio_pci_query_nvectors(DeviceState *d)
1208 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1210 return proxy->nvectors;
1213 static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
1214 struct virtio_pci_cap *cap)
1216 PCIDevice *dev = &proxy->pci_dev;
1219 offset = pci_add_capability(dev, PCI_CAP_ID_VNDR, 0, cap->cap_len);
1222 assert(cap->cap_len >= sizeof *cap);
1223 memcpy(dev->config + offset + PCI_CAP_FLAGS, &cap->cap_len,
1224 cap->cap_len - PCI_CAP_FLAGS);
1229 static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr,
1232 VirtIOPCIProxy *proxy = opaque;
1233 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1238 case VIRTIO_PCI_COMMON_DFSELECT:
1239 val = proxy->dfselect;
1241 case VIRTIO_PCI_COMMON_DF:
1242 if (proxy->dfselect <= 1) {
1243 val = (vdev->host_features & ~VIRTIO_LEGACY_FEATURES) >>
1244 (32 * proxy->dfselect);
1247 case VIRTIO_PCI_COMMON_GFSELECT:
1248 val = proxy->gfselect;
1250 case VIRTIO_PCI_COMMON_GF:
1251 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1252 val = proxy->guest_features[proxy->gfselect];
1255 case VIRTIO_PCI_COMMON_MSIX:
1256 val = vdev->config_vector;
1258 case VIRTIO_PCI_COMMON_NUMQ:
1259 for (i = 0; i < VIRTIO_QUEUE_MAX; ++i) {
1260 if (virtio_queue_get_num(vdev, i)) {
1265 case VIRTIO_PCI_COMMON_STATUS:
1268 case VIRTIO_PCI_COMMON_CFGGENERATION:
1269 val = vdev->generation;
1271 case VIRTIO_PCI_COMMON_Q_SELECT:
1272 val = vdev->queue_sel;
1274 case VIRTIO_PCI_COMMON_Q_SIZE:
1275 val = virtio_queue_get_num(vdev, vdev->queue_sel);
1277 case VIRTIO_PCI_COMMON_Q_MSIX:
1278 val = virtio_queue_vector(vdev, vdev->queue_sel);
1280 case VIRTIO_PCI_COMMON_Q_ENABLE:
1281 val = proxy->vqs[vdev->queue_sel].enabled;
1283 case VIRTIO_PCI_COMMON_Q_NOFF:
1284 /* Simply map queues in order */
1285 val = vdev->queue_sel;
1287 case VIRTIO_PCI_COMMON_Q_DESCLO:
1288 val = proxy->vqs[vdev->queue_sel].desc[0];
1290 case VIRTIO_PCI_COMMON_Q_DESCHI:
1291 val = proxy->vqs[vdev->queue_sel].desc[1];
1293 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1294 val = proxy->vqs[vdev->queue_sel].avail[0];
1296 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1297 val = proxy->vqs[vdev->queue_sel].avail[1];
1299 case VIRTIO_PCI_COMMON_Q_USEDLO:
1300 val = proxy->vqs[vdev->queue_sel].used[0];
1302 case VIRTIO_PCI_COMMON_Q_USEDHI:
1303 val = proxy->vqs[vdev->queue_sel].used[1];
1312 static void virtio_pci_common_write(void *opaque, hwaddr addr,
1313 uint64_t val, unsigned size)
1315 VirtIOPCIProxy *proxy = opaque;
1316 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1319 case VIRTIO_PCI_COMMON_DFSELECT:
1320 proxy->dfselect = val;
1322 case VIRTIO_PCI_COMMON_GFSELECT:
1323 proxy->gfselect = val;
1325 case VIRTIO_PCI_COMMON_GF:
1326 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1327 proxy->guest_features[proxy->gfselect] = val;
1328 virtio_set_features(vdev,
1329 (((uint64_t)proxy->guest_features[1]) << 32) |
1330 proxy->guest_features[0]);
1333 case VIRTIO_PCI_COMMON_MSIX:
1334 msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
1335 /* Make it possible for guest to discover an error took place. */
1336 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1337 val = VIRTIO_NO_VECTOR;
1339 vdev->config_vector = val;
1341 case VIRTIO_PCI_COMMON_STATUS:
1342 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
1343 virtio_pci_stop_ioeventfd(proxy);
1346 virtio_set_status(vdev, val & 0xFF);
1348 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
1349 virtio_pci_start_ioeventfd(proxy);
1352 if (vdev->status == 0) {
1353 virtio_pci_reset(DEVICE(proxy));
1357 case VIRTIO_PCI_COMMON_Q_SELECT:
1358 if (val < VIRTIO_QUEUE_MAX) {
1359 vdev->queue_sel = val;
1362 case VIRTIO_PCI_COMMON_Q_SIZE:
1363 proxy->vqs[vdev->queue_sel].num = val;
1365 case VIRTIO_PCI_COMMON_Q_MSIX:
1366 msix_vector_unuse(&proxy->pci_dev,
1367 virtio_queue_vector(vdev, vdev->queue_sel));
1368 /* Make it possible for guest to discover an error took place. */
1369 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1370 val = VIRTIO_NO_VECTOR;
1372 virtio_queue_set_vector(vdev, vdev->queue_sel, val);
1374 case VIRTIO_PCI_COMMON_Q_ENABLE:
1375 /* TODO: need a way to put num back on reset. */
1376 virtio_queue_set_num(vdev, vdev->queue_sel,
1377 proxy->vqs[vdev->queue_sel].num);
1378 virtio_queue_set_rings(vdev, vdev->queue_sel,
1379 ((uint64_t)proxy->vqs[vdev->queue_sel].desc[1]) << 32 |
1380 proxy->vqs[vdev->queue_sel].desc[0],
1381 ((uint64_t)proxy->vqs[vdev->queue_sel].avail[1]) << 32 |
1382 proxy->vqs[vdev->queue_sel].avail[0],
1383 ((uint64_t)proxy->vqs[vdev->queue_sel].used[1]) << 32 |
1384 proxy->vqs[vdev->queue_sel].used[0]);
1385 proxy->vqs[vdev->queue_sel].enabled = 1;
1387 case VIRTIO_PCI_COMMON_Q_DESCLO:
1388 proxy->vqs[vdev->queue_sel].desc[0] = val;
1390 case VIRTIO_PCI_COMMON_Q_DESCHI:
1391 proxy->vqs[vdev->queue_sel].desc[1] = val;
1393 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1394 proxy->vqs[vdev->queue_sel].avail[0] = val;
1396 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1397 proxy->vqs[vdev->queue_sel].avail[1] = val;
1399 case VIRTIO_PCI_COMMON_Q_USEDLO:
1400 proxy->vqs[vdev->queue_sel].used[0] = val;
1402 case VIRTIO_PCI_COMMON_Q_USEDHI:
1403 proxy->vqs[vdev->queue_sel].used[1] = val;
1411 static uint64_t virtio_pci_notify_read(void *opaque, hwaddr addr,
1417 static void virtio_pci_notify_write(void *opaque, hwaddr addr,
1418 uint64_t val, unsigned size)
1420 VirtIODevice *vdev = opaque;
1421 unsigned queue = addr / QEMU_VIRTIO_PCI_QUEUE_MEM_MULT;
1423 if (queue < VIRTIO_QUEUE_MAX) {
1424 virtio_queue_notify(vdev, queue);
1428 static void virtio_pci_notify_write_pio(void *opaque, hwaddr addr,
1429 uint64_t val, unsigned size)
1431 VirtIODevice *vdev = opaque;
1432 unsigned queue = val;
1434 if (queue < VIRTIO_QUEUE_MAX) {
1435 virtio_queue_notify(vdev, queue);
1439 static uint64_t virtio_pci_isr_read(void *opaque, hwaddr addr,
1442 VirtIOPCIProxy *proxy = opaque;
1443 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1444 uint64_t val = vdev->isr;
1447 pci_irq_deassert(&proxy->pci_dev);
1452 static void virtio_pci_isr_write(void *opaque, hwaddr addr,
1453 uint64_t val, unsigned size)
1457 static uint64_t virtio_pci_device_read(void *opaque, hwaddr addr,
1460 VirtIODevice *vdev = opaque;
1465 val = virtio_config_modern_readb(vdev, addr);
1468 val = virtio_config_modern_readw(vdev, addr);
1471 val = virtio_config_modern_readl(vdev, addr);
1477 static void virtio_pci_device_write(void *opaque, hwaddr addr,
1478 uint64_t val, unsigned size)
1480 VirtIODevice *vdev = opaque;
1483 virtio_config_modern_writeb(vdev, addr, val);
1486 virtio_config_modern_writew(vdev, addr, val);
1489 virtio_config_modern_writel(vdev, addr, val);
1494 static void virtio_pci_modern_regions_init(VirtIOPCIProxy *proxy)
1496 static const MemoryRegionOps common_ops = {
1497 .read = virtio_pci_common_read,
1498 .write = virtio_pci_common_write,
1500 .min_access_size = 1,
1501 .max_access_size = 4,
1503 .endianness = DEVICE_LITTLE_ENDIAN,
1505 static const MemoryRegionOps isr_ops = {
1506 .read = virtio_pci_isr_read,
1507 .write = virtio_pci_isr_write,
1509 .min_access_size = 1,
1510 .max_access_size = 4,
1512 .endianness = DEVICE_LITTLE_ENDIAN,
1514 static const MemoryRegionOps device_ops = {
1515 .read = virtio_pci_device_read,
1516 .write = virtio_pci_device_write,
1518 .min_access_size = 1,
1519 .max_access_size = 4,
1521 .endianness = DEVICE_LITTLE_ENDIAN,
1523 static const MemoryRegionOps notify_ops = {
1524 .read = virtio_pci_notify_read,
1525 .write = virtio_pci_notify_write,
1527 .min_access_size = 1,
1528 .max_access_size = 4,
1530 .endianness = DEVICE_LITTLE_ENDIAN,
1532 static const MemoryRegionOps notify_pio_ops = {
1533 .read = virtio_pci_notify_read,
1534 .write = virtio_pci_notify_write_pio,
1536 .min_access_size = 1,
1537 .max_access_size = 4,
1539 .endianness = DEVICE_LITTLE_ENDIAN,
1543 memory_region_init_io(&proxy->common.mr, OBJECT(proxy),
1546 "virtio-pci-common",
1547 proxy->common.size);
1549 memory_region_init_io(&proxy->isr.mr, OBJECT(proxy),
1555 memory_region_init_io(&proxy->device.mr, OBJECT(proxy),
1557 virtio_bus_get_device(&proxy->bus),
1558 "virtio-pci-device",
1559 proxy->device.size);
1561 memory_region_init_io(&proxy->notify.mr, OBJECT(proxy),
1563 virtio_bus_get_device(&proxy->bus),
1564 "virtio-pci-notify",
1565 proxy->notify.size);
1567 memory_region_init_io(&proxy->notify_pio.mr, OBJECT(proxy),
1569 virtio_bus_get_device(&proxy->bus),
1570 "virtio-pci-notify-pio",
1571 proxy->notify.size);
1574 static void virtio_pci_modern_region_map(VirtIOPCIProxy *proxy,
1575 VirtIOPCIRegion *region,
1576 struct virtio_pci_cap *cap,
1580 memory_region_add_subregion(mr, region->offset, ®ion->mr);
1582 cap->cfg_type = region->type;
1584 cap->offset = cpu_to_le32(region->offset);
1585 cap->length = cpu_to_le32(region->size);
1586 virtio_pci_add_mem_cap(proxy, cap);
1590 static void virtio_pci_modern_mem_region_map(VirtIOPCIProxy *proxy,
1591 VirtIOPCIRegion *region,
1592 struct virtio_pci_cap *cap)
1594 virtio_pci_modern_region_map(proxy, region, cap,
1595 &proxy->modern_bar, proxy->modern_mem_bar);
1598 static void virtio_pci_modern_io_region_map(VirtIOPCIProxy *proxy,
1599 VirtIOPCIRegion *region,
1600 struct virtio_pci_cap *cap)
1602 virtio_pci_modern_region_map(proxy, region, cap,
1603 &proxy->io_bar, proxy->modern_io_bar);
1606 static void virtio_pci_modern_mem_region_unmap(VirtIOPCIProxy *proxy,
1607 VirtIOPCIRegion *region)
1609 memory_region_del_subregion(&proxy->modern_bar,
1613 static void virtio_pci_modern_io_region_unmap(VirtIOPCIProxy *proxy,
1614 VirtIOPCIRegion *region)
1616 memory_region_del_subregion(&proxy->io_bar,
1620 /* This is called by virtio-bus just after the device is plugged. */
1621 static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
1623 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1624 VirtioBusState *bus = &proxy->bus;
1625 bool legacy = !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_LEGACY);
1626 bool modern = !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_MODERN);
1627 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1630 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1632 config = proxy->pci_dev.config;
1633 if (proxy->class_code) {
1634 pci_config_set_class(config, proxy->class_code);
1638 /* legacy and transitional */
1639 pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID,
1640 pci_get_word(config + PCI_VENDOR_ID));
1641 pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus));
1643 /* pure virtio-1.0 */
1644 pci_set_word(config + PCI_VENDOR_ID,
1645 PCI_VENDOR_ID_REDHAT_QUMRANET);
1646 pci_set_word(config + PCI_DEVICE_ID,
1647 0x1040 + virtio_bus_get_vdev_id(bus));
1648 pci_config_set_revision(config, 1);
1650 config[PCI_INTERRUPT_PIN] = 1;
1654 struct virtio_pci_cap cap = {
1655 .cap_len = sizeof cap,
1657 struct virtio_pci_notify_cap notify = {
1658 .cap.cap_len = sizeof notify,
1659 .notify_off_multiplier =
1660 cpu_to_le32(QEMU_VIRTIO_PCI_QUEUE_MEM_MULT),
1662 struct virtio_pci_cfg_cap cfg = {
1663 .cap.cap_len = sizeof cfg,
1664 .cap.cfg_type = VIRTIO_PCI_CAP_PCI_CFG,
1666 struct virtio_pci_notify_cap notify_pio = {
1667 .cap.cap_len = sizeof notify,
1668 .notify_off_multiplier = cpu_to_le32(0x0),
1671 struct virtio_pci_cfg_cap *cfg_mask;
1673 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1674 virtio_pci_modern_regions_init(proxy);
1676 virtio_pci_modern_mem_region_map(proxy, &proxy->common, &cap);
1677 virtio_pci_modern_mem_region_map(proxy, &proxy->isr, &cap);
1678 virtio_pci_modern_mem_region_map(proxy, &proxy->device, &cap);
1679 virtio_pci_modern_mem_region_map(proxy, &proxy->notify, ¬ify.cap);
1682 memory_region_init(&proxy->io_bar, OBJECT(proxy),
1683 "virtio-pci-io", 0x4);
1685 pci_register_bar(&proxy->pci_dev, proxy->modern_io_bar,
1686 PCI_BASE_ADDRESS_SPACE_IO, &proxy->io_bar);
1688 virtio_pci_modern_io_region_map(proxy, &proxy->notify_pio,
1692 pci_register_bar(&proxy->pci_dev, proxy->modern_mem_bar,
1693 PCI_BASE_ADDRESS_SPACE_MEMORY |
1694 PCI_BASE_ADDRESS_MEM_PREFETCH |
1695 PCI_BASE_ADDRESS_MEM_TYPE_64,
1696 &proxy->modern_bar);
1698 proxy->config_cap = virtio_pci_add_mem_cap(proxy, &cfg.cap);
1699 cfg_mask = (void *)(proxy->pci_dev.wmask + proxy->config_cap);
1700 pci_set_byte(&cfg_mask->cap.bar, ~0x0);
1701 pci_set_long((uint8_t *)&cfg_mask->cap.offset, ~0x0);
1702 pci_set_long((uint8_t *)&cfg_mask->cap.length, ~0x0);
1703 pci_set_long(cfg_mask->pci_cfg_data, ~0x0);
1706 if (proxy->nvectors) {
1707 int err = msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
1710 /* Notice when a system that supports MSIx can't initialize it. */
1711 if (err != -ENOTSUP) {
1712 error_report("unable to init msix vectors to %" PRIu32,
1715 proxy->nvectors = 0;
1719 proxy->pci_dev.config_write = virtio_write_config;
1720 proxy->pci_dev.config_read = virtio_read_config;
1723 size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev)
1724 + virtio_bus_get_vdev_config_len(bus);
1725 size = pow2ceil(size);
1727 memory_region_init_io(&proxy->bar, OBJECT(proxy),
1728 &virtio_pci_config_ops,
1729 proxy, "virtio-pci", size);
1731 pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar,
1732 PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar);
1735 if (!kvm_has_many_ioeventfds()) {
1736 proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
1739 virtio_add_feature(&vdev->host_features, VIRTIO_F_BAD_FEATURE);
1742 static void virtio_pci_device_unplugged(DeviceState *d)
1744 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1745 bool modern = !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_MODERN);
1746 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1748 virtio_pci_stop_ioeventfd(proxy);
1751 virtio_pci_modern_mem_region_unmap(proxy, &proxy->common);
1752 virtio_pci_modern_mem_region_unmap(proxy, &proxy->isr);
1753 virtio_pci_modern_mem_region_unmap(proxy, &proxy->device);
1754 virtio_pci_modern_mem_region_unmap(proxy, &proxy->notify);
1756 virtio_pci_modern_io_region_unmap(proxy, &proxy->notify_pio);
1761 static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
1763 VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
1764 VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev);
1767 * virtio pci bar layout used by default.
1768 * subclasses can re-arrange things if needed.
1770 * region 0 -- virtio legacy io bar
1771 * region 1 -- msi-x bar
1772 * region 4+5 -- virtio modern memory (64bit) bar
1775 proxy->legacy_io_bar = 0;
1776 proxy->msix_bar = 1;
1777 proxy->modern_io_bar = 2;
1778 proxy->modern_mem_bar = 4;
1780 proxy->common.offset = 0x0;
1781 proxy->common.size = 0x1000;
1782 proxy->common.type = VIRTIO_PCI_CAP_COMMON_CFG;
1784 proxy->isr.offset = 0x1000;
1785 proxy->isr.size = 0x1000;
1786 proxy->isr.type = VIRTIO_PCI_CAP_ISR_CFG;
1788 proxy->device.offset = 0x2000;
1789 proxy->device.size = 0x1000;
1790 proxy->device.type = VIRTIO_PCI_CAP_DEVICE_CFG;
1792 proxy->notify.offset = 0x3000;
1793 proxy->notify.size =
1794 QEMU_VIRTIO_PCI_QUEUE_MEM_MULT * VIRTIO_QUEUE_MAX;
1795 proxy->notify.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1797 proxy->notify_pio.offset = 0x0;
1798 proxy->notify_pio.size = 0x4;
1799 proxy->notify_pio.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1801 /* subclasses can enforce modern, so do this unconditionally */
1802 memory_region_init(&proxy->modern_bar, OBJECT(proxy), "virtio-pci",
1803 2 * QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
1806 memory_region_init_alias(&proxy->modern_cfg,
1811 memory_region_size(&proxy->modern_bar));
1813 address_space_init(&proxy->modern_as, &proxy->modern_cfg, "virtio-pci-cfg-as");
1815 if (pci_is_express(pci_dev) && pci_bus_is_express(pci_dev->bus) &&
1816 !pci_bus_is_root(pci_dev->bus)) {
1819 pos = pcie_endpoint_cap_init(pci_dev, 0);
1822 pos = pci_add_capability(pci_dev, PCI_CAP_ID_PM, 0, PCI_PM_SIZEOF);
1826 * Indicates that this function complies with revision 1.2 of the
1827 * PCI Power Management Interface Specification.
1829 pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
1832 * make future invocations of pci_is_express() return false
1833 * and pci_config_size() return PCI_CONFIG_SPACE_SIZE.
1835 pci_dev->cap_present &= ~QEMU_PCI_CAP_EXPRESS;
1838 virtio_pci_bus_new(&proxy->bus, sizeof(proxy->bus), proxy);
1840 k->realize(proxy, errp);
1844 static void virtio_pci_exit(PCIDevice *pci_dev)
1846 VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
1848 msix_uninit_exclusive_bar(pci_dev);
1849 address_space_destroy(&proxy->modern_as);
1852 static void virtio_pci_reset(DeviceState *qdev)
1854 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1855 VirtioBusState *bus = VIRTIO_BUS(&proxy->bus);
1858 virtio_pci_stop_ioeventfd(proxy);
1859 virtio_bus_reset(bus);
1860 msix_unuse_all_vectors(&proxy->pci_dev);
1862 for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
1863 proxy->vqs[i].enabled = 0;
1867 static Property virtio_pci_properties[] = {
1868 DEFINE_PROP_BIT("virtio-pci-bus-master-bug-migration", VirtIOPCIProxy, flags,
1869 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT, false),
1870 DEFINE_PROP_BIT("disable-legacy", VirtIOPCIProxy, flags,
1871 VIRTIO_PCI_FLAG_DISABLE_LEGACY_BIT, false),
1872 DEFINE_PROP_BIT("disable-modern", VirtIOPCIProxy, flags,
1873 VIRTIO_PCI_FLAG_DISABLE_MODERN_BIT, true),
1874 DEFINE_PROP_BIT("migrate-extra", VirtIOPCIProxy, flags,
1875 VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, true),
1876 DEFINE_PROP_BIT("modern-pio-notify", VirtIOPCIProxy, flags,
1877 VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, false),
1878 DEFINE_PROP_BIT("x-disable-pcie", VirtIOPCIProxy, flags,
1879 VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, false),
1880 DEFINE_PROP_END_OF_LIST(),
1883 static void virtio_pci_dc_realize(DeviceState *qdev, Error **errp)
1885 VirtioPCIClass *vpciklass = VIRTIO_PCI_GET_CLASS(qdev);
1886 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1887 PCIDevice *pci_dev = &proxy->pci_dev;
1889 if (!(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_PCIE) &&
1890 !(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_MODERN)) {
1891 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
1894 vpciklass->parent_dc_realize(qdev, errp);
1897 static void virtio_pci_class_init(ObjectClass *klass, void *data)
1899 DeviceClass *dc = DEVICE_CLASS(klass);
1900 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1901 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
1903 dc->props = virtio_pci_properties;
1904 k->realize = virtio_pci_realize;
1905 k->exit = virtio_pci_exit;
1906 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1907 k->revision = VIRTIO_PCI_ABI_VERSION;
1908 k->class_id = PCI_CLASS_OTHERS;
1909 vpciklass->parent_dc_realize = dc->realize;
1910 dc->realize = virtio_pci_dc_realize;
1911 dc->reset = virtio_pci_reset;
1914 static const TypeInfo virtio_pci_info = {
1915 .name = TYPE_VIRTIO_PCI,
1916 .parent = TYPE_PCI_DEVICE,
1917 .instance_size = sizeof(VirtIOPCIProxy),
1918 .class_init = virtio_pci_class_init,
1919 .class_size = sizeof(VirtioPCIClass),
1923 /* virtio-blk-pci */
1925 static Property virtio_blk_pci_properties[] = {
1926 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
1927 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1928 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1929 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
1930 DEFINE_PROP_END_OF_LIST(),
1933 static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1935 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
1936 DeviceState *vdev = DEVICE(&dev->vdev);
1938 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1939 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1942 static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
1944 DeviceClass *dc = DEVICE_CLASS(klass);
1945 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1946 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1948 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1949 dc->props = virtio_blk_pci_properties;
1950 k->realize = virtio_blk_pci_realize;
1951 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1952 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
1953 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
1954 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
1957 static void virtio_blk_pci_instance_init(Object *obj)
1959 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
1961 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1963 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
1965 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
1966 "bootindex", &error_abort);
1969 static const TypeInfo virtio_blk_pci_info = {
1970 .name = TYPE_VIRTIO_BLK_PCI,
1971 .parent = TYPE_VIRTIO_PCI,
1972 .instance_size = sizeof(VirtIOBlkPCI),
1973 .instance_init = virtio_blk_pci_instance_init,
1974 .class_init = virtio_blk_pci_class_init,
1977 /* virtio-scsi-pci */
1979 static Property virtio_scsi_pci_properties[] = {
1980 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1981 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1982 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
1983 DEV_NVECTORS_UNSPECIFIED),
1984 DEFINE_PROP_END_OF_LIST(),
1987 static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1989 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev);
1990 DeviceState *vdev = DEVICE(&dev->vdev);
1991 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
1992 DeviceState *proxy = DEVICE(vpci_dev);
1995 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
1996 vpci_dev->nvectors = vs->conf.num_queues + 3;
2000 * For command line compatibility, this sets the virtio-scsi-device bus
2004 bus_name = g_strdup_printf("%s.0", proxy->id);
2005 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
2009 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2010 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2013 static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
2015 DeviceClass *dc = DEVICE_CLASS(klass);
2016 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2017 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2019 k->realize = virtio_scsi_pci_realize;
2020 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2021 dc->props = virtio_scsi_pci_properties;
2022 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2023 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2024 pcidev_k->revision = 0x00;
2025 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2028 static void virtio_scsi_pci_instance_init(Object *obj)
2030 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj);
2032 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2034 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread",
2038 static const TypeInfo virtio_scsi_pci_info = {
2039 .name = TYPE_VIRTIO_SCSI_PCI,
2040 .parent = TYPE_VIRTIO_PCI,
2041 .instance_size = sizeof(VirtIOSCSIPCI),
2042 .instance_init = virtio_scsi_pci_instance_init,
2043 .class_init = virtio_scsi_pci_class_init,
2046 /* vhost-scsi-pci */
2048 #ifdef CONFIG_VHOST_SCSI
2049 static Property vhost_scsi_pci_properties[] = {
2050 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
2051 DEV_NVECTORS_UNSPECIFIED),
2052 DEFINE_PROP_END_OF_LIST(),
2055 static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2057 VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev);
2058 DeviceState *vdev = DEVICE(&dev->vdev);
2059 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
2061 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2062 vpci_dev->nvectors = vs->conf.num_queues + 3;
2065 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2066 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2069 static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data)
2071 DeviceClass *dc = DEVICE_CLASS(klass);
2072 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2073 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2074 k->realize = vhost_scsi_pci_realize;
2075 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2076 dc->props = vhost_scsi_pci_properties;
2077 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2078 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2079 pcidev_k->revision = 0x00;
2080 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2083 static void vhost_scsi_pci_instance_init(Object *obj)
2085 VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj);
2087 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2089 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2090 "bootindex", &error_abort);
2093 static const TypeInfo vhost_scsi_pci_info = {
2094 .name = TYPE_VHOST_SCSI_PCI,
2095 .parent = TYPE_VIRTIO_PCI,
2096 .instance_size = sizeof(VHostSCSIPCI),
2097 .instance_init = vhost_scsi_pci_instance_init,
2098 .class_init = vhost_scsi_pci_class_init,
2102 /* virtio-balloon-pci */
2104 static Property virtio_balloon_pci_properties[] = {
2105 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2106 DEFINE_PROP_END_OF_LIST(),
2109 static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2111 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
2112 DeviceState *vdev = DEVICE(&dev->vdev);
2114 if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
2115 vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
2116 vpci_dev->class_code = PCI_CLASS_OTHERS;
2119 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2120 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2123 static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
2125 DeviceClass *dc = DEVICE_CLASS(klass);
2126 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2127 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2128 k->realize = virtio_balloon_pci_realize;
2129 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2130 dc->props = virtio_balloon_pci_properties;
2131 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2132 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
2133 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2134 pcidev_k->class_id = PCI_CLASS_OTHERS;
2137 static void virtio_balloon_pci_instance_init(Object *obj)
2139 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
2141 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2142 TYPE_VIRTIO_BALLOON);
2143 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
2144 "guest-stats", &error_abort);
2145 object_property_add_alias(obj, "guest-stats-polling-interval",
2147 "guest-stats-polling-interval", &error_abort);
2150 static const TypeInfo virtio_balloon_pci_info = {
2151 .name = TYPE_VIRTIO_BALLOON_PCI,
2152 .parent = TYPE_VIRTIO_PCI,
2153 .instance_size = sizeof(VirtIOBalloonPCI),
2154 .instance_init = virtio_balloon_pci_instance_init,
2155 .class_init = virtio_balloon_pci_class_init,
2158 /* virtio-serial-pci */
2160 static void virtio_serial_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2162 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev);
2163 DeviceState *vdev = DEVICE(&dev->vdev);
2164 DeviceState *proxy = DEVICE(vpci_dev);
2167 if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
2168 vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
2169 vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */
2170 vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER;
2173 /* backwards-compatibility with machines that were created with
2174 DEV_NVECTORS_UNSPECIFIED */
2175 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2176 vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1;
2180 * For command line compatibility, this sets the virtio-serial-device bus
2184 bus_name = g_strdup_printf("%s.0", proxy->id);
2185 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
2189 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2190 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2193 static Property virtio_serial_pci_properties[] = {
2194 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2195 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
2196 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2197 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2198 DEFINE_PROP_END_OF_LIST(),
2201 static void virtio_serial_pci_class_init(ObjectClass *klass, void *data)
2203 DeviceClass *dc = DEVICE_CLASS(klass);
2204 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2205 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2206 k->realize = virtio_serial_pci_realize;
2207 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2208 dc->props = virtio_serial_pci_properties;
2209 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2210 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE;
2211 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2212 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
2215 static void virtio_serial_pci_instance_init(Object *obj)
2217 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj);
2219 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2220 TYPE_VIRTIO_SERIAL);
2223 static const TypeInfo virtio_serial_pci_info = {
2224 .name = TYPE_VIRTIO_SERIAL_PCI,
2225 .parent = TYPE_VIRTIO_PCI,
2226 .instance_size = sizeof(VirtIOSerialPCI),
2227 .instance_init = virtio_serial_pci_instance_init,
2228 .class_init = virtio_serial_pci_class_init,
2231 /* virtio-net-pci */
2233 static Property virtio_net_properties[] = {
2234 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2235 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
2236 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
2237 DEFINE_PROP_END_OF_LIST(),
2240 static void virtio_net_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2242 DeviceState *qdev = DEVICE(vpci_dev);
2243 VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev);
2244 DeviceState *vdev = DEVICE(&dev->vdev);
2246 virtio_net_set_netclient_name(&dev->vdev, qdev->id,
2247 object_get_typename(OBJECT(qdev)));
2248 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2249 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2252 static void virtio_net_pci_class_init(ObjectClass *klass, void *data)
2254 DeviceClass *dc = DEVICE_CLASS(klass);
2255 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2256 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
2258 k->romfile = "efi-virtio.rom";
2259 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2260 k->device_id = PCI_DEVICE_ID_VIRTIO_NET;
2261 k->revision = VIRTIO_PCI_ABI_VERSION;
2262 k->class_id = PCI_CLASS_NETWORK_ETHERNET;
2263 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2264 dc->props = virtio_net_properties;
2265 vpciklass->realize = virtio_net_pci_realize;
2268 static void virtio_net_pci_instance_init(Object *obj)
2270 VirtIONetPCI *dev = VIRTIO_NET_PCI(obj);
2272 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2274 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2275 "bootindex", &error_abort);
2278 static const TypeInfo virtio_net_pci_info = {
2279 .name = TYPE_VIRTIO_NET_PCI,
2280 .parent = TYPE_VIRTIO_PCI,
2281 .instance_size = sizeof(VirtIONetPCI),
2282 .instance_init = virtio_net_pci_instance_init,
2283 .class_init = virtio_net_pci_class_init,
2286 /* virtio-rng-pci */
2288 static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2290 VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
2291 DeviceState *vdev = DEVICE(&vrng->vdev);
2294 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2295 object_property_set_bool(OBJECT(vdev), true, "realized", &err);
2297 error_propagate(errp, err);
2301 object_property_set_link(OBJECT(vrng),
2302 OBJECT(vrng->vdev.conf.rng), "rng",
2306 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
2308 DeviceClass *dc = DEVICE_CLASS(klass);
2309 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2310 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2312 k->realize = virtio_rng_pci_realize;
2313 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2315 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2316 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
2317 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2318 pcidev_k->class_id = PCI_CLASS_OTHERS;
2321 static void virtio_rng_initfn(Object *obj)
2323 VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
2325 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2327 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), "rng",
2331 static const TypeInfo virtio_rng_pci_info = {
2332 .name = TYPE_VIRTIO_RNG_PCI,
2333 .parent = TYPE_VIRTIO_PCI,
2334 .instance_size = sizeof(VirtIORngPCI),
2335 .instance_init = virtio_rng_initfn,
2336 .class_init = virtio_rng_pci_class_init,
2339 /* virtio-input-pci */
2341 static Property virtio_input_pci_properties[] = {
2342 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2343 DEFINE_PROP_END_OF_LIST(),
2346 static void virtio_input_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2348 VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
2349 DeviceState *vdev = DEVICE(&vinput->vdev);
2351 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2352 /* force virtio-1.0 */
2353 vpci_dev->flags &= ~VIRTIO_PCI_FLAG_DISABLE_MODERN;
2354 vpci_dev->flags |= VIRTIO_PCI_FLAG_DISABLE_LEGACY;
2355 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2358 static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
2360 DeviceClass *dc = DEVICE_CLASS(klass);
2361 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2362 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2364 dc->props = virtio_input_pci_properties;
2365 k->realize = virtio_input_pci_realize;
2366 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2368 pcidev_k->class_id = PCI_CLASS_INPUT_OTHER;
2371 static void virtio_input_hid_kbd_pci_class_init(ObjectClass *klass, void *data)
2373 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2375 pcidev_k->class_id = PCI_CLASS_INPUT_KEYBOARD;
2378 static void virtio_input_hid_mouse_pci_class_init(ObjectClass *klass,
2381 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2383 pcidev_k->class_id = PCI_CLASS_INPUT_MOUSE;
2386 static void virtio_keyboard_initfn(Object *obj)
2388 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2390 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2391 TYPE_VIRTIO_KEYBOARD);
2394 static void virtio_mouse_initfn(Object *obj)
2396 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2398 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2402 static void virtio_tablet_initfn(Object *obj)
2404 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2406 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2407 TYPE_VIRTIO_TABLET);
2410 static const TypeInfo virtio_input_pci_info = {
2411 .name = TYPE_VIRTIO_INPUT_PCI,
2412 .parent = TYPE_VIRTIO_PCI,
2413 .instance_size = sizeof(VirtIOInputPCI),
2414 .class_init = virtio_input_pci_class_init,
2418 static const TypeInfo virtio_input_hid_pci_info = {
2419 .name = TYPE_VIRTIO_INPUT_HID_PCI,
2420 .parent = TYPE_VIRTIO_INPUT_PCI,
2421 .instance_size = sizeof(VirtIOInputHIDPCI),
2425 static const TypeInfo virtio_keyboard_pci_info = {
2426 .name = TYPE_VIRTIO_KEYBOARD_PCI,
2427 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2428 .class_init = virtio_input_hid_kbd_pci_class_init,
2429 .instance_size = sizeof(VirtIOInputHIDPCI),
2430 .instance_init = virtio_keyboard_initfn,
2433 static const TypeInfo virtio_mouse_pci_info = {
2434 .name = TYPE_VIRTIO_MOUSE_PCI,
2435 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2436 .class_init = virtio_input_hid_mouse_pci_class_init,
2437 .instance_size = sizeof(VirtIOInputHIDPCI),
2438 .instance_init = virtio_mouse_initfn,
2441 static const TypeInfo virtio_tablet_pci_info = {
2442 .name = TYPE_VIRTIO_TABLET_PCI,
2443 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2444 .instance_size = sizeof(VirtIOInputHIDPCI),
2445 .instance_init = virtio_tablet_initfn,
2449 static void virtio_host_initfn(Object *obj)
2451 VirtIOInputHostPCI *dev = VIRTIO_INPUT_HOST_PCI(obj);
2453 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2454 TYPE_VIRTIO_INPUT_HOST);
2457 static const TypeInfo virtio_host_pci_info = {
2458 .name = TYPE_VIRTIO_INPUT_HOST_PCI,
2459 .parent = TYPE_VIRTIO_INPUT_PCI,
2460 .instance_size = sizeof(VirtIOInputHostPCI),
2461 .instance_init = virtio_host_initfn,
2465 /* virtio-pci-bus */
2467 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
2468 VirtIOPCIProxy *dev)
2470 DeviceState *qdev = DEVICE(dev);
2471 char virtio_bus_name[] = "virtio-bus";
2473 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_PCI_BUS, qdev,
2477 static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
2479 BusClass *bus_class = BUS_CLASS(klass);
2480 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
2481 bus_class->max_dev = 1;
2482 k->notify = virtio_pci_notify;
2483 k->save_config = virtio_pci_save_config;
2484 k->load_config = virtio_pci_load_config;
2485 k->save_queue = virtio_pci_save_queue;
2486 k->load_queue = virtio_pci_load_queue;
2487 k->save_extra_state = virtio_pci_save_extra_state;
2488 k->load_extra_state = virtio_pci_load_extra_state;
2489 k->has_extra_state = virtio_pci_has_extra_state;
2490 k->query_guest_notifiers = virtio_pci_query_guest_notifiers;
2491 k->set_host_notifier = virtio_pci_set_host_notifier;
2492 k->set_guest_notifiers = virtio_pci_set_guest_notifiers;
2493 k->vmstate_change = virtio_pci_vmstate_change;
2494 k->device_plugged = virtio_pci_device_plugged;
2495 k->device_unplugged = virtio_pci_device_unplugged;
2496 k->query_nvectors = virtio_pci_query_nvectors;
2499 static const TypeInfo virtio_pci_bus_info = {
2500 .name = TYPE_VIRTIO_PCI_BUS,
2501 .parent = TYPE_VIRTIO_BUS,
2502 .instance_size = sizeof(VirtioPCIBusState),
2503 .class_init = virtio_pci_bus_class_init,
2506 static void virtio_pci_register_types(void)
2508 type_register_static(&virtio_rng_pci_info);
2509 type_register_static(&virtio_input_pci_info);
2510 type_register_static(&virtio_input_hid_pci_info);
2511 type_register_static(&virtio_keyboard_pci_info);
2512 type_register_static(&virtio_mouse_pci_info);
2513 type_register_static(&virtio_tablet_pci_info);
2515 type_register_static(&virtio_host_pci_info);
2517 type_register_static(&virtio_pci_bus_info);
2518 type_register_static(&virtio_pci_info);
2519 #ifdef CONFIG_VIRTFS
2520 type_register_static(&virtio_9p_pci_info);
2522 type_register_static(&virtio_blk_pci_info);
2523 type_register_static(&virtio_scsi_pci_info);
2524 type_register_static(&virtio_balloon_pci_info);
2525 type_register_static(&virtio_serial_pci_info);
2526 type_register_static(&virtio_net_pci_info);
2527 #ifdef CONFIG_VHOST_SCSI
2528 type_register_static(&vhost_scsi_pci_info);
2532 type_init(virtio_pci_register_types)