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 virtio_pci_modern(proxy);
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 static bool virtio_pci_ioeventfd_enabled(DeviceState *d)
267 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
269 return (proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) != 0;
272 #define QEMU_VIRTIO_PCI_QUEUE_MEM_MULT 0x1000
274 static inline int virtio_pci_queue_mem_mult(struct VirtIOPCIProxy *proxy)
276 return (proxy->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ) ?
277 QEMU_VIRTIO_PCI_QUEUE_MEM_MULT : 4;
280 static int virtio_pci_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
283 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
284 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
285 VirtQueue *vq = virtio_get_queue(vdev, n);
286 bool legacy = virtio_pci_legacy(proxy);
287 bool modern = virtio_pci_modern(proxy);
288 bool fast_mmio = kvm_ioeventfd_any_length_enabled();
289 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
290 MemoryRegion *modern_mr = &proxy->notify.mr;
291 MemoryRegion *modern_notify_mr = &proxy->notify_pio.mr;
292 MemoryRegion *legacy_mr = &proxy->bar;
293 hwaddr modern_addr = virtio_pci_queue_mem_mult(proxy) *
294 virtio_get_queue_index(vq);
295 hwaddr legacy_addr = VIRTIO_PCI_QUEUE_NOTIFY;
300 memory_region_add_eventfd(modern_mr, modern_addr, 0,
303 memory_region_add_eventfd(modern_mr, modern_addr, 2,
307 memory_region_add_eventfd(modern_notify_mr, 0, 2,
312 memory_region_add_eventfd(legacy_mr, legacy_addr, 2,
318 memory_region_del_eventfd(modern_mr, modern_addr, 0,
321 memory_region_del_eventfd(modern_mr, modern_addr, 2,
325 memory_region_del_eventfd(modern_notify_mr, 0, 2,
330 memory_region_del_eventfd(legacy_mr, legacy_addr, 2,
337 static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy)
339 virtio_bus_start_ioeventfd(&proxy->bus);
342 static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy)
344 virtio_bus_stop_ioeventfd(&proxy->bus);
347 static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
349 VirtIOPCIProxy *proxy = opaque;
350 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
354 case VIRTIO_PCI_GUEST_FEATURES:
355 /* Guest does not negotiate properly? We have to assume nothing. */
356 if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
357 val = virtio_bus_get_vdev_bad_features(&proxy->bus);
359 virtio_set_features(vdev, val);
361 case VIRTIO_PCI_QUEUE_PFN:
362 pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
364 virtio_pci_reset(DEVICE(proxy));
367 virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
369 case VIRTIO_PCI_QUEUE_SEL:
370 if (val < VIRTIO_QUEUE_MAX)
371 vdev->queue_sel = val;
373 case VIRTIO_PCI_QUEUE_NOTIFY:
374 if (val < VIRTIO_QUEUE_MAX) {
375 virtio_queue_notify(vdev, val);
378 case VIRTIO_PCI_STATUS:
379 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
380 virtio_pci_stop_ioeventfd(proxy);
383 virtio_set_status(vdev, val & 0xFF);
385 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
386 virtio_pci_start_ioeventfd(proxy);
389 if (vdev->status == 0) {
390 virtio_pci_reset(DEVICE(proxy));
393 /* Linux before 2.6.34 drives the device without enabling
394 the PCI device bus master bit. Enable it automatically
395 for the guest. This is a PCI spec violation but so is
396 initiating DMA with bus master bit clear. */
397 if (val == (VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER)) {
398 pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
399 proxy->pci_dev.config[PCI_COMMAND] |
400 PCI_COMMAND_MASTER, 1);
403 case VIRTIO_MSI_CONFIG_VECTOR:
404 msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
405 /* Make it possible for guest to discover an error took place. */
406 if (msix_vector_use(&proxy->pci_dev, val) < 0)
407 val = VIRTIO_NO_VECTOR;
408 vdev->config_vector = val;
410 case VIRTIO_MSI_QUEUE_VECTOR:
411 msix_vector_unuse(&proxy->pci_dev,
412 virtio_queue_vector(vdev, vdev->queue_sel));
413 /* Make it possible for guest to discover an error took place. */
414 if (msix_vector_use(&proxy->pci_dev, val) < 0)
415 val = VIRTIO_NO_VECTOR;
416 virtio_queue_set_vector(vdev, vdev->queue_sel, val);
419 error_report("%s: unexpected address 0x%x value 0x%x",
420 __func__, addr, val);
425 static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
427 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
428 uint32_t ret = 0xFFFFFFFF;
431 case VIRTIO_PCI_HOST_FEATURES:
432 ret = vdev->host_features;
434 case VIRTIO_PCI_GUEST_FEATURES:
435 ret = vdev->guest_features;
437 case VIRTIO_PCI_QUEUE_PFN:
438 ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
439 >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
441 case VIRTIO_PCI_QUEUE_NUM:
442 ret = virtio_queue_get_num(vdev, vdev->queue_sel);
444 case VIRTIO_PCI_QUEUE_SEL:
445 ret = vdev->queue_sel;
447 case VIRTIO_PCI_STATUS:
451 /* reading from the ISR also clears it. */
454 pci_irq_deassert(&proxy->pci_dev);
456 case VIRTIO_MSI_CONFIG_VECTOR:
457 ret = vdev->config_vector;
459 case VIRTIO_MSI_QUEUE_VECTOR:
460 ret = virtio_queue_vector(vdev, vdev->queue_sel);
469 static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr,
472 VirtIOPCIProxy *proxy = opaque;
473 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
474 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
477 return virtio_ioport_read(proxy, addr);
483 val = virtio_config_readb(vdev, addr);
486 val = virtio_config_readw(vdev, addr);
487 if (virtio_is_big_endian(vdev)) {
492 val = virtio_config_readl(vdev, addr);
493 if (virtio_is_big_endian(vdev)) {
501 static void virtio_pci_config_write(void *opaque, hwaddr addr,
502 uint64_t val, unsigned size)
504 VirtIOPCIProxy *proxy = opaque;
505 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
506 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
508 virtio_ioport_write(proxy, addr, val);
513 * Virtio-PCI is odd. Ioports are LE but config space is target native
518 virtio_config_writeb(vdev, addr, val);
521 if (virtio_is_big_endian(vdev)) {
524 virtio_config_writew(vdev, addr, val);
527 if (virtio_is_big_endian(vdev)) {
530 virtio_config_writel(vdev, addr, val);
535 static const MemoryRegionOps virtio_pci_config_ops = {
536 .read = virtio_pci_config_read,
537 .write = virtio_pci_config_write,
539 .min_access_size = 1,
540 .max_access_size = 4,
542 .endianness = DEVICE_LITTLE_ENDIAN,
545 /* Below are generic functions to do memcpy from/to an address space,
546 * without byteswaps, with input validation.
548 * As regular address_space_* APIs all do some kind of byteswap at least for
549 * some host/target combinations, we are forced to explicitly convert to a
550 * known-endianness integer value.
551 * It doesn't really matter which endian format to go through, so the code
552 * below selects the endian that causes the least amount of work on the given
555 * Note: host pointer must be aligned.
558 void virtio_address_space_write(AddressSpace *as, hwaddr addr,
559 const uint8_t *buf, int len)
563 /* address_space_* APIs assume an aligned address.
564 * As address is under guest control, handle illegal values.
568 /* Make sure caller aligned buf properly */
569 assert(!(((uintptr_t)buf) & (len - 1)));
573 val = pci_get_byte(buf);
574 address_space_stb(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
577 val = pci_get_word(buf);
578 address_space_stw_le(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
581 val = pci_get_long(buf);
582 address_space_stl_le(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
585 /* As length is under guest control, handle illegal values. */
591 virtio_address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len)
595 /* address_space_* APIs assume an aligned address.
596 * As address is under guest control, handle illegal values.
600 /* Make sure caller aligned buf properly */
601 assert(!(((uintptr_t)buf) & (len - 1)));
605 val = address_space_ldub(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
606 pci_set_byte(buf, val);
609 val = address_space_lduw_le(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
610 pci_set_word(buf, val);
613 val = address_space_ldl_le(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
614 pci_set_long(buf, val);
617 /* As length is under guest control, handle illegal values. */
622 static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
623 uint32_t val, int len)
625 VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
626 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
627 struct virtio_pci_cfg_cap *cfg;
629 pci_default_write_config(pci_dev, address, val, len);
631 if (range_covers_byte(address, len, PCI_COMMAND) &&
632 !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
633 virtio_pci_stop_ioeventfd(proxy);
634 virtio_set_status(vdev, vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK);
637 if (proxy->config_cap &&
638 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
640 sizeof cfg->pci_cfg_data)) {
644 cfg = (void *)(proxy->pci_dev.config + proxy->config_cap);
645 off = le32_to_cpu(cfg->cap.offset);
646 len = le32_to_cpu(cfg->cap.length);
648 if (len == 1 || len == 2 || len == 4) {
649 assert(len <= sizeof cfg->pci_cfg_data);
650 virtio_address_space_write(&proxy->modern_as, off,
651 cfg->pci_cfg_data, len);
656 static uint32_t virtio_read_config(PCIDevice *pci_dev,
657 uint32_t address, int len)
659 VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
660 struct virtio_pci_cfg_cap *cfg;
662 if (proxy->config_cap &&
663 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
665 sizeof cfg->pci_cfg_data)) {
669 cfg = (void *)(proxy->pci_dev.config + proxy->config_cap);
670 off = le32_to_cpu(cfg->cap.offset);
671 len = le32_to_cpu(cfg->cap.length);
673 if (len == 1 || len == 2 || len == 4) {
674 assert(len <= sizeof cfg->pci_cfg_data);
675 virtio_address_space_read(&proxy->modern_as, off,
676 cfg->pci_cfg_data, len);
680 return pci_default_read_config(pci_dev, address, len);
683 static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy,
684 unsigned int queue_no,
687 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
690 if (irqfd->users == 0) {
691 ret = kvm_irqchip_add_msi_route(kvm_state, vector, &proxy->pci_dev);
701 static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy,
704 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
705 if (--irqfd->users == 0) {
706 kvm_irqchip_release_virq(kvm_state, irqfd->virq);
710 static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy,
711 unsigned int queue_no,
714 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
715 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
716 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
717 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
718 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, irqfd->virq);
721 static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy,
722 unsigned int queue_no,
725 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
726 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
727 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
728 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
731 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, n, irqfd->virq);
735 static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
737 PCIDevice *dev = &proxy->pci_dev;
738 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
739 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
743 for (queue_no = 0; queue_no < nvqs; queue_no++) {
744 if (!virtio_queue_get_num(vdev, queue_no)) {
747 vector = virtio_queue_vector(vdev, queue_no);
748 if (vector >= msix_nr_vectors_allocated(dev)) {
751 ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector);
755 /* If guest supports masking, set up irqfd now.
756 * Otherwise, delay until unmasked in the frontend.
758 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
759 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
761 kvm_virtio_pci_vq_vector_release(proxy, vector);
769 while (--queue_no >= 0) {
770 vector = virtio_queue_vector(vdev, queue_no);
771 if (vector >= msix_nr_vectors_allocated(dev)) {
774 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
775 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
777 kvm_virtio_pci_vq_vector_release(proxy, vector);
782 static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
784 PCIDevice *dev = &proxy->pci_dev;
785 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
788 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 /* If guest supports masking, clean up irqfd now.
799 * Otherwise, it was cleaned when masked in the frontend.
801 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
802 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
804 kvm_virtio_pci_vq_vector_release(proxy, vector);
808 static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy,
809 unsigned int queue_no,
813 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
814 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
815 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
816 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
820 if (proxy->vector_irqfd) {
821 irqfd = &proxy->vector_irqfd[vector];
822 if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) {
823 ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg,
828 kvm_irqchip_commit_routes(kvm_state);
832 /* If guest supports masking, irqfd is already setup, unmask it.
833 * Otherwise, set it up now.
835 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
836 k->guest_notifier_mask(vdev, queue_no, false);
837 /* Test after unmasking to avoid losing events. */
838 if (k->guest_notifier_pending &&
839 k->guest_notifier_pending(vdev, queue_no)) {
840 event_notifier_set(n);
843 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
848 static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy,
849 unsigned int queue_no,
852 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
853 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
855 /* If guest supports masking, keep irqfd but mask it.
856 * Otherwise, clean it up now.
858 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
859 k->guest_notifier_mask(vdev, queue_no, true);
861 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
865 static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
868 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
869 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
870 VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
871 int ret, index, unmasked = 0;
874 index = virtio_get_queue_index(vq);
875 if (!virtio_queue_get_num(vdev, index)) {
878 if (index < proxy->nvqs_with_notifiers) {
879 ret = virtio_pci_vq_vector_unmask(proxy, index, vector, msg);
885 vq = virtio_vector_next_queue(vq);
891 vq = virtio_vector_first_queue(vdev, vector);
892 while (vq && unmasked >= 0) {
893 index = virtio_get_queue_index(vq);
894 if (index < proxy->nvqs_with_notifiers) {
895 virtio_pci_vq_vector_mask(proxy, index, vector);
898 vq = virtio_vector_next_queue(vq);
903 static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector)
905 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
906 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
907 VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
911 index = virtio_get_queue_index(vq);
912 if (!virtio_queue_get_num(vdev, index)) {
915 if (index < proxy->nvqs_with_notifiers) {
916 virtio_pci_vq_vector_mask(proxy, index, vector);
918 vq = virtio_vector_next_queue(vq);
922 static void virtio_pci_vector_poll(PCIDevice *dev,
923 unsigned int vector_start,
924 unsigned int vector_end)
926 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
927 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
928 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
931 EventNotifier *notifier;
934 for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) {
935 if (!virtio_queue_get_num(vdev, queue_no)) {
938 vector = virtio_queue_vector(vdev, queue_no);
939 if (vector < vector_start || vector >= vector_end ||
940 !msix_is_masked(dev, vector)) {
943 vq = virtio_get_queue(vdev, queue_no);
944 notifier = virtio_queue_get_guest_notifier(vq);
945 if (k->guest_notifier_pending) {
946 if (k->guest_notifier_pending(vdev, queue_no)) {
947 msix_set_pending(dev, vector);
949 } else if (event_notifier_test_and_clear(notifier)) {
950 msix_set_pending(dev, vector);
955 static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
958 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
959 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
960 VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
961 VirtQueue *vq = virtio_get_queue(vdev, n);
962 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
965 int r = event_notifier_init(notifier, 0);
969 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
971 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
972 event_notifier_cleanup(notifier);
975 if (!msix_enabled(&proxy->pci_dev) &&
976 vdev->use_guest_notifier_mask &&
977 vdc->guest_notifier_mask) {
978 vdc->guest_notifier_mask(vdev, n, !assign);
984 static bool virtio_pci_query_guest_notifiers(DeviceState *d)
986 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
987 return msix_enabled(&proxy->pci_dev);
990 static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
992 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
993 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
994 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
996 bool with_irqfd = msix_enabled(&proxy->pci_dev) &&
997 kvm_msi_via_irqfd_enabled();
999 nvqs = MIN(nvqs, VIRTIO_QUEUE_MAX);
1001 /* When deassigning, pass a consistent nvqs value
1002 * to avoid leaking notifiers.
1004 assert(assign || nvqs == proxy->nvqs_with_notifiers);
1006 proxy->nvqs_with_notifiers = nvqs;
1008 /* Must unset vector notifier while guest notifier is still assigned */
1009 if ((proxy->vector_irqfd || k->guest_notifier_mask) && !assign) {
1010 msix_unset_vector_notifiers(&proxy->pci_dev);
1011 if (proxy->vector_irqfd) {
1012 kvm_virtio_pci_vector_release(proxy, nvqs);
1013 g_free(proxy->vector_irqfd);
1014 proxy->vector_irqfd = NULL;
1018 for (n = 0; n < nvqs; n++) {
1019 if (!virtio_queue_get_num(vdev, n)) {
1023 r = virtio_pci_set_guest_notifier(d, n, assign, with_irqfd);
1029 /* Must set vector notifier after guest notifier has been assigned */
1030 if ((with_irqfd || k->guest_notifier_mask) && assign) {
1032 proxy->vector_irqfd =
1033 g_malloc0(sizeof(*proxy->vector_irqfd) *
1034 msix_nr_vectors_allocated(&proxy->pci_dev));
1035 r = kvm_virtio_pci_vector_use(proxy, nvqs);
1040 r = msix_set_vector_notifiers(&proxy->pci_dev,
1041 virtio_pci_vector_unmask,
1042 virtio_pci_vector_mask,
1043 virtio_pci_vector_poll);
1045 goto notifiers_error;
1054 kvm_virtio_pci_vector_release(proxy, nvqs);
1058 /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
1061 virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd);
1066 static void virtio_pci_vmstate_change(DeviceState *d, bool running)
1068 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1069 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1072 /* Old QEMU versions did not set bus master enable on status write.
1073 * Detect DRIVER set and enable it.
1075 if ((proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION) &&
1076 (vdev->status & VIRTIO_CONFIG_S_DRIVER) &&
1077 !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
1078 pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
1079 proxy->pci_dev.config[PCI_COMMAND] |
1080 PCI_COMMAND_MASTER, 1);
1082 virtio_pci_start_ioeventfd(proxy);
1084 virtio_pci_stop_ioeventfd(proxy);
1088 #ifdef CONFIG_VIRTFS
1089 static void virtio_9p_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1091 V9fsPCIState *dev = VIRTIO_9P_PCI(vpci_dev);
1092 DeviceState *vdev = DEVICE(&dev->vdev);
1094 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1095 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1098 static Property virtio_9p_pci_properties[] = {
1099 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1100 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1101 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
1102 DEFINE_PROP_END_OF_LIST(),
1105 static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
1107 DeviceClass *dc = DEVICE_CLASS(klass);
1108 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1109 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1111 k->realize = virtio_9p_pci_realize;
1112 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1113 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
1114 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
1115 pcidev_k->class_id = 0x2;
1116 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1117 dc->props = virtio_9p_pci_properties;
1120 static void virtio_9p_pci_instance_init(Object *obj)
1122 V9fsPCIState *dev = VIRTIO_9P_PCI(obj);
1124 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1128 static const TypeInfo virtio_9p_pci_info = {
1129 .name = TYPE_VIRTIO_9P_PCI,
1130 .parent = TYPE_VIRTIO_PCI,
1131 .instance_size = sizeof(V9fsPCIState),
1132 .instance_init = virtio_9p_pci_instance_init,
1133 .class_init = virtio_9p_pci_class_init,
1135 #endif /* CONFIG_VIRTFS */
1138 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
1141 static int virtio_pci_query_nvectors(DeviceState *d)
1143 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1145 return proxy->nvectors;
1148 static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
1149 struct virtio_pci_cap *cap)
1151 PCIDevice *dev = &proxy->pci_dev;
1154 offset = pci_add_capability(dev, PCI_CAP_ID_VNDR, 0, cap->cap_len);
1157 assert(cap->cap_len >= sizeof *cap);
1158 memcpy(dev->config + offset + PCI_CAP_FLAGS, &cap->cap_len,
1159 cap->cap_len - PCI_CAP_FLAGS);
1164 static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr,
1167 VirtIOPCIProxy *proxy = opaque;
1168 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1173 case VIRTIO_PCI_COMMON_DFSELECT:
1174 val = proxy->dfselect;
1176 case VIRTIO_PCI_COMMON_DF:
1177 if (proxy->dfselect <= 1) {
1178 VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
1180 val = (vdev->host_features & ~vdc->legacy_features) >>
1181 (32 * proxy->dfselect);
1184 case VIRTIO_PCI_COMMON_GFSELECT:
1185 val = proxy->gfselect;
1187 case VIRTIO_PCI_COMMON_GF:
1188 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1189 val = proxy->guest_features[proxy->gfselect];
1192 case VIRTIO_PCI_COMMON_MSIX:
1193 val = vdev->config_vector;
1195 case VIRTIO_PCI_COMMON_NUMQ:
1196 for (i = 0; i < VIRTIO_QUEUE_MAX; ++i) {
1197 if (virtio_queue_get_num(vdev, i)) {
1202 case VIRTIO_PCI_COMMON_STATUS:
1205 case VIRTIO_PCI_COMMON_CFGGENERATION:
1206 val = vdev->generation;
1208 case VIRTIO_PCI_COMMON_Q_SELECT:
1209 val = vdev->queue_sel;
1211 case VIRTIO_PCI_COMMON_Q_SIZE:
1212 val = virtio_queue_get_num(vdev, vdev->queue_sel);
1214 case VIRTIO_PCI_COMMON_Q_MSIX:
1215 val = virtio_queue_vector(vdev, vdev->queue_sel);
1217 case VIRTIO_PCI_COMMON_Q_ENABLE:
1218 val = proxy->vqs[vdev->queue_sel].enabled;
1220 case VIRTIO_PCI_COMMON_Q_NOFF:
1221 /* Simply map queues in order */
1222 val = vdev->queue_sel;
1224 case VIRTIO_PCI_COMMON_Q_DESCLO:
1225 val = proxy->vqs[vdev->queue_sel].desc[0];
1227 case VIRTIO_PCI_COMMON_Q_DESCHI:
1228 val = proxy->vqs[vdev->queue_sel].desc[1];
1230 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1231 val = proxy->vqs[vdev->queue_sel].avail[0];
1233 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1234 val = proxy->vqs[vdev->queue_sel].avail[1];
1236 case VIRTIO_PCI_COMMON_Q_USEDLO:
1237 val = proxy->vqs[vdev->queue_sel].used[0];
1239 case VIRTIO_PCI_COMMON_Q_USEDHI:
1240 val = proxy->vqs[vdev->queue_sel].used[1];
1249 static void virtio_pci_common_write(void *opaque, hwaddr addr,
1250 uint64_t val, unsigned size)
1252 VirtIOPCIProxy *proxy = opaque;
1253 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1256 case VIRTIO_PCI_COMMON_DFSELECT:
1257 proxy->dfselect = val;
1259 case VIRTIO_PCI_COMMON_GFSELECT:
1260 proxy->gfselect = val;
1262 case VIRTIO_PCI_COMMON_GF:
1263 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1264 proxy->guest_features[proxy->gfselect] = val;
1265 virtio_set_features(vdev,
1266 (((uint64_t)proxy->guest_features[1]) << 32) |
1267 proxy->guest_features[0]);
1270 case VIRTIO_PCI_COMMON_MSIX:
1271 msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
1272 /* Make it possible for guest to discover an error took place. */
1273 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1274 val = VIRTIO_NO_VECTOR;
1276 vdev->config_vector = val;
1278 case VIRTIO_PCI_COMMON_STATUS:
1279 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
1280 virtio_pci_stop_ioeventfd(proxy);
1283 virtio_set_status(vdev, val & 0xFF);
1285 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
1286 virtio_pci_start_ioeventfd(proxy);
1289 if (vdev->status == 0) {
1290 virtio_pci_reset(DEVICE(proxy));
1294 case VIRTIO_PCI_COMMON_Q_SELECT:
1295 if (val < VIRTIO_QUEUE_MAX) {
1296 vdev->queue_sel = val;
1299 case VIRTIO_PCI_COMMON_Q_SIZE:
1300 proxy->vqs[vdev->queue_sel].num = val;
1302 case VIRTIO_PCI_COMMON_Q_MSIX:
1303 msix_vector_unuse(&proxy->pci_dev,
1304 virtio_queue_vector(vdev, vdev->queue_sel));
1305 /* Make it possible for guest to discover an error took place. */
1306 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1307 val = VIRTIO_NO_VECTOR;
1309 virtio_queue_set_vector(vdev, vdev->queue_sel, val);
1311 case VIRTIO_PCI_COMMON_Q_ENABLE:
1312 /* TODO: need a way to put num back on reset. */
1313 virtio_queue_set_num(vdev, vdev->queue_sel,
1314 proxy->vqs[vdev->queue_sel].num);
1315 virtio_queue_set_rings(vdev, vdev->queue_sel,
1316 ((uint64_t)proxy->vqs[vdev->queue_sel].desc[1]) << 32 |
1317 proxy->vqs[vdev->queue_sel].desc[0],
1318 ((uint64_t)proxy->vqs[vdev->queue_sel].avail[1]) << 32 |
1319 proxy->vqs[vdev->queue_sel].avail[0],
1320 ((uint64_t)proxy->vqs[vdev->queue_sel].used[1]) << 32 |
1321 proxy->vqs[vdev->queue_sel].used[0]);
1322 proxy->vqs[vdev->queue_sel].enabled = 1;
1324 case VIRTIO_PCI_COMMON_Q_DESCLO:
1325 proxy->vqs[vdev->queue_sel].desc[0] = val;
1327 case VIRTIO_PCI_COMMON_Q_DESCHI:
1328 proxy->vqs[vdev->queue_sel].desc[1] = val;
1330 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1331 proxy->vqs[vdev->queue_sel].avail[0] = val;
1333 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1334 proxy->vqs[vdev->queue_sel].avail[1] = val;
1336 case VIRTIO_PCI_COMMON_Q_USEDLO:
1337 proxy->vqs[vdev->queue_sel].used[0] = val;
1339 case VIRTIO_PCI_COMMON_Q_USEDHI:
1340 proxy->vqs[vdev->queue_sel].used[1] = val;
1348 static uint64_t virtio_pci_notify_read(void *opaque, hwaddr addr,
1354 static void virtio_pci_notify_write(void *opaque, hwaddr addr,
1355 uint64_t val, unsigned size)
1357 VirtIODevice *vdev = opaque;
1358 VirtIOPCIProxy *proxy = VIRTIO_PCI(DEVICE(vdev)->parent_bus->parent);
1359 unsigned queue = addr / virtio_pci_queue_mem_mult(proxy);
1361 if (queue < VIRTIO_QUEUE_MAX) {
1362 virtio_queue_notify(vdev, queue);
1366 static void virtio_pci_notify_write_pio(void *opaque, hwaddr addr,
1367 uint64_t val, unsigned size)
1369 VirtIODevice *vdev = opaque;
1370 unsigned queue = val;
1372 if (queue < VIRTIO_QUEUE_MAX) {
1373 virtio_queue_notify(vdev, queue);
1377 static uint64_t virtio_pci_isr_read(void *opaque, hwaddr addr,
1380 VirtIOPCIProxy *proxy = opaque;
1381 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1382 uint64_t val = vdev->isr;
1385 pci_irq_deassert(&proxy->pci_dev);
1390 static void virtio_pci_isr_write(void *opaque, hwaddr addr,
1391 uint64_t val, unsigned size)
1395 static uint64_t virtio_pci_device_read(void *opaque, hwaddr addr,
1398 VirtIODevice *vdev = opaque;
1403 val = virtio_config_modern_readb(vdev, addr);
1406 val = virtio_config_modern_readw(vdev, addr);
1409 val = virtio_config_modern_readl(vdev, addr);
1415 static void virtio_pci_device_write(void *opaque, hwaddr addr,
1416 uint64_t val, unsigned size)
1418 VirtIODevice *vdev = opaque;
1421 virtio_config_modern_writeb(vdev, addr, val);
1424 virtio_config_modern_writew(vdev, addr, val);
1427 virtio_config_modern_writel(vdev, addr, val);
1432 static void virtio_pci_modern_regions_init(VirtIOPCIProxy *proxy)
1434 static const MemoryRegionOps common_ops = {
1435 .read = virtio_pci_common_read,
1436 .write = virtio_pci_common_write,
1438 .min_access_size = 1,
1439 .max_access_size = 4,
1441 .endianness = DEVICE_LITTLE_ENDIAN,
1443 static const MemoryRegionOps isr_ops = {
1444 .read = virtio_pci_isr_read,
1445 .write = virtio_pci_isr_write,
1447 .min_access_size = 1,
1448 .max_access_size = 4,
1450 .endianness = DEVICE_LITTLE_ENDIAN,
1452 static const MemoryRegionOps device_ops = {
1453 .read = virtio_pci_device_read,
1454 .write = virtio_pci_device_write,
1456 .min_access_size = 1,
1457 .max_access_size = 4,
1459 .endianness = DEVICE_LITTLE_ENDIAN,
1461 static const MemoryRegionOps notify_ops = {
1462 .read = virtio_pci_notify_read,
1463 .write = virtio_pci_notify_write,
1465 .min_access_size = 1,
1466 .max_access_size = 4,
1468 .endianness = DEVICE_LITTLE_ENDIAN,
1470 static const MemoryRegionOps notify_pio_ops = {
1471 .read = virtio_pci_notify_read,
1472 .write = virtio_pci_notify_write_pio,
1474 .min_access_size = 1,
1475 .max_access_size = 4,
1477 .endianness = DEVICE_LITTLE_ENDIAN,
1481 memory_region_init_io(&proxy->common.mr, OBJECT(proxy),
1484 "virtio-pci-common",
1485 proxy->common.size);
1487 memory_region_init_io(&proxy->isr.mr, OBJECT(proxy),
1493 memory_region_init_io(&proxy->device.mr, OBJECT(proxy),
1495 virtio_bus_get_device(&proxy->bus),
1496 "virtio-pci-device",
1497 proxy->device.size);
1499 memory_region_init_io(&proxy->notify.mr, OBJECT(proxy),
1501 virtio_bus_get_device(&proxy->bus),
1502 "virtio-pci-notify",
1503 proxy->notify.size);
1505 memory_region_init_io(&proxy->notify_pio.mr, OBJECT(proxy),
1507 virtio_bus_get_device(&proxy->bus),
1508 "virtio-pci-notify-pio",
1509 proxy->notify_pio.size);
1512 static void virtio_pci_modern_region_map(VirtIOPCIProxy *proxy,
1513 VirtIOPCIRegion *region,
1514 struct virtio_pci_cap *cap,
1518 memory_region_add_subregion(mr, region->offset, ®ion->mr);
1520 cap->cfg_type = region->type;
1522 cap->offset = cpu_to_le32(region->offset);
1523 cap->length = cpu_to_le32(region->size);
1524 virtio_pci_add_mem_cap(proxy, cap);
1528 static void virtio_pci_modern_mem_region_map(VirtIOPCIProxy *proxy,
1529 VirtIOPCIRegion *region,
1530 struct virtio_pci_cap *cap)
1532 virtio_pci_modern_region_map(proxy, region, cap,
1533 &proxy->modern_bar, proxy->modern_mem_bar_idx);
1536 static void virtio_pci_modern_io_region_map(VirtIOPCIProxy *proxy,
1537 VirtIOPCIRegion *region,
1538 struct virtio_pci_cap *cap)
1540 virtio_pci_modern_region_map(proxy, region, cap,
1541 &proxy->io_bar, proxy->modern_io_bar_idx);
1544 static void virtio_pci_modern_mem_region_unmap(VirtIOPCIProxy *proxy,
1545 VirtIOPCIRegion *region)
1547 memory_region_del_subregion(&proxy->modern_bar,
1551 static void virtio_pci_modern_io_region_unmap(VirtIOPCIProxy *proxy,
1552 VirtIOPCIRegion *region)
1554 memory_region_del_subregion(&proxy->io_bar,
1558 static void virtio_pci_pre_plugged(DeviceState *d, Error **errp)
1560 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1561 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1563 if (virtio_pci_modern(proxy)) {
1564 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1567 virtio_add_feature(&vdev->host_features, VIRTIO_F_BAD_FEATURE);
1570 /* This is called by virtio-bus just after the device is plugged. */
1571 static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
1573 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1574 VirtioBusState *bus = &proxy->bus;
1575 bool legacy = virtio_pci_legacy(proxy);
1577 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1580 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1583 * Virtio capabilities present without
1584 * VIRTIO_F_VERSION_1 confuses guests
1586 if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
1587 virtio_pci_disable_modern(proxy);
1590 error_setg(errp, "Device doesn't support modern mode, and legacy"
1591 " mode is disabled");
1592 error_append_hint(errp, "Set disable-legacy to off\n");
1598 modern = virtio_pci_modern(proxy);
1600 config = proxy->pci_dev.config;
1601 if (proxy->class_code) {
1602 pci_config_set_class(config, proxy->class_code);
1606 /* legacy and transitional */
1607 pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID,
1608 pci_get_word(config + PCI_VENDOR_ID));
1609 pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus));
1611 /* pure virtio-1.0 */
1612 pci_set_word(config + PCI_VENDOR_ID,
1613 PCI_VENDOR_ID_REDHAT_QUMRANET);
1614 pci_set_word(config + PCI_DEVICE_ID,
1615 0x1040 + virtio_bus_get_vdev_id(bus));
1616 pci_config_set_revision(config, 1);
1618 config[PCI_INTERRUPT_PIN] = 1;
1622 struct virtio_pci_cap cap = {
1623 .cap_len = sizeof cap,
1625 struct virtio_pci_notify_cap notify = {
1626 .cap.cap_len = sizeof notify,
1627 .notify_off_multiplier =
1628 cpu_to_le32(virtio_pci_queue_mem_mult(proxy)),
1630 struct virtio_pci_cfg_cap cfg = {
1631 .cap.cap_len = sizeof cfg,
1632 .cap.cfg_type = VIRTIO_PCI_CAP_PCI_CFG,
1634 struct virtio_pci_notify_cap notify_pio = {
1635 .cap.cap_len = sizeof notify,
1636 .notify_off_multiplier = cpu_to_le32(0x0),
1639 struct virtio_pci_cfg_cap *cfg_mask;
1641 virtio_pci_modern_regions_init(proxy);
1643 virtio_pci_modern_mem_region_map(proxy, &proxy->common, &cap);
1644 virtio_pci_modern_mem_region_map(proxy, &proxy->isr, &cap);
1645 virtio_pci_modern_mem_region_map(proxy, &proxy->device, &cap);
1646 virtio_pci_modern_mem_region_map(proxy, &proxy->notify, ¬ify.cap);
1649 memory_region_init(&proxy->io_bar, OBJECT(proxy),
1650 "virtio-pci-io", 0x4);
1652 pci_register_bar(&proxy->pci_dev, proxy->modern_io_bar_idx,
1653 PCI_BASE_ADDRESS_SPACE_IO, &proxy->io_bar);
1655 virtio_pci_modern_io_region_map(proxy, &proxy->notify_pio,
1659 pci_register_bar(&proxy->pci_dev, proxy->modern_mem_bar_idx,
1660 PCI_BASE_ADDRESS_SPACE_MEMORY |
1661 PCI_BASE_ADDRESS_MEM_PREFETCH |
1662 PCI_BASE_ADDRESS_MEM_TYPE_64,
1663 &proxy->modern_bar);
1665 proxy->config_cap = virtio_pci_add_mem_cap(proxy, &cfg.cap);
1666 cfg_mask = (void *)(proxy->pci_dev.wmask + proxy->config_cap);
1667 pci_set_byte(&cfg_mask->cap.bar, ~0x0);
1668 pci_set_long((uint8_t *)&cfg_mask->cap.offset, ~0x0);
1669 pci_set_long((uint8_t *)&cfg_mask->cap.length, ~0x0);
1670 pci_set_long(cfg_mask->pci_cfg_data, ~0x0);
1673 if (proxy->nvectors) {
1674 int err = msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
1675 proxy->msix_bar_idx);
1677 /* Notice when a system that supports MSIx can't initialize it. */
1678 if (err != -ENOTSUP) {
1679 error_report("unable to init msix vectors to %" PRIu32,
1682 proxy->nvectors = 0;
1686 proxy->pci_dev.config_write = virtio_write_config;
1687 proxy->pci_dev.config_read = virtio_read_config;
1690 size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev)
1691 + virtio_bus_get_vdev_config_len(bus);
1692 size = pow2ceil(size);
1694 memory_region_init_io(&proxy->bar, OBJECT(proxy),
1695 &virtio_pci_config_ops,
1696 proxy, "virtio-pci", size);
1698 pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar_idx,
1699 PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar);
1703 static void virtio_pci_device_unplugged(DeviceState *d)
1705 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1706 bool modern = virtio_pci_modern(proxy);
1707 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1709 virtio_pci_stop_ioeventfd(proxy);
1712 virtio_pci_modern_mem_region_unmap(proxy, &proxy->common);
1713 virtio_pci_modern_mem_region_unmap(proxy, &proxy->isr);
1714 virtio_pci_modern_mem_region_unmap(proxy, &proxy->device);
1715 virtio_pci_modern_mem_region_unmap(proxy, &proxy->notify);
1717 virtio_pci_modern_io_region_unmap(proxy, &proxy->notify_pio);
1722 static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
1724 VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
1725 VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev);
1726 bool pcie_port = pci_bus_is_express(pci_dev->bus) &&
1727 !pci_bus_is_root(pci_dev->bus);
1729 if (!kvm_has_many_ioeventfds()) {
1730 proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
1734 * virtio pci bar layout used by default.
1735 * subclasses can re-arrange things if needed.
1737 * region 0 -- virtio legacy io bar
1738 * region 1 -- msi-x bar
1739 * region 4+5 -- virtio modern memory (64bit) bar
1742 proxy->legacy_io_bar_idx = 0;
1743 proxy->msix_bar_idx = 1;
1744 proxy->modern_io_bar_idx = 2;
1745 proxy->modern_mem_bar_idx = 4;
1747 proxy->common.offset = 0x0;
1748 proxy->common.size = 0x1000;
1749 proxy->common.type = VIRTIO_PCI_CAP_COMMON_CFG;
1751 proxy->isr.offset = 0x1000;
1752 proxy->isr.size = 0x1000;
1753 proxy->isr.type = VIRTIO_PCI_CAP_ISR_CFG;
1755 proxy->device.offset = 0x2000;
1756 proxy->device.size = 0x1000;
1757 proxy->device.type = VIRTIO_PCI_CAP_DEVICE_CFG;
1759 proxy->notify.offset = 0x3000;
1760 proxy->notify.size = virtio_pci_queue_mem_mult(proxy) * VIRTIO_QUEUE_MAX;
1761 proxy->notify.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1763 proxy->notify_pio.offset = 0x0;
1764 proxy->notify_pio.size = 0x4;
1765 proxy->notify_pio.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1767 /* subclasses can enforce modern, so do this unconditionally */
1768 memory_region_init(&proxy->modern_bar, OBJECT(proxy), "virtio-pci",
1769 /* PCI BAR regions must be powers of 2 */
1770 pow2ceil(proxy->notify.offset + proxy->notify.size));
1772 memory_region_init_alias(&proxy->modern_cfg,
1777 memory_region_size(&proxy->modern_bar));
1779 address_space_init(&proxy->modern_as, &proxy->modern_cfg, "virtio-pci-cfg-as");
1781 if (proxy->disable_legacy == ON_OFF_AUTO_AUTO) {
1782 proxy->disable_legacy = pcie_port ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
1785 if (!virtio_pci_modern(proxy) && !virtio_pci_legacy(proxy)) {
1786 error_setg(errp, "device cannot work as neither modern nor legacy mode"
1788 error_append_hint(errp, "Set either disable-modern or disable-legacy"
1793 if (pcie_port && pci_is_express(pci_dev)) {
1796 pos = pcie_endpoint_cap_init(pci_dev, 0);
1799 pos = pci_add_capability(pci_dev, PCI_CAP_ID_PM, 0, PCI_PM_SIZEOF);
1803 * Indicates that this function complies with revision 1.2 of the
1804 * PCI Power Management Interface Specification.
1806 pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
1809 * make future invocations of pci_is_express() return false
1810 * and pci_config_size() return PCI_CONFIG_SPACE_SIZE.
1812 pci_dev->cap_present &= ~QEMU_PCI_CAP_EXPRESS;
1815 virtio_pci_bus_new(&proxy->bus, sizeof(proxy->bus), proxy);
1817 k->realize(proxy, errp);
1821 static void virtio_pci_exit(PCIDevice *pci_dev)
1823 VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
1825 msix_uninit_exclusive_bar(pci_dev);
1826 address_space_destroy(&proxy->modern_as);
1829 static void virtio_pci_reset(DeviceState *qdev)
1831 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1832 VirtioBusState *bus = VIRTIO_BUS(&proxy->bus);
1835 virtio_pci_stop_ioeventfd(proxy);
1836 virtio_bus_reset(bus);
1837 msix_unuse_all_vectors(&proxy->pci_dev);
1839 for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
1840 proxy->vqs[i].enabled = 0;
1844 static Property virtio_pci_properties[] = {
1845 DEFINE_PROP_BIT("virtio-pci-bus-master-bug-migration", VirtIOPCIProxy, flags,
1846 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT, false),
1847 DEFINE_PROP_ON_OFF_AUTO("disable-legacy", VirtIOPCIProxy, disable_legacy,
1849 DEFINE_PROP_BOOL("disable-modern", VirtIOPCIProxy, disable_modern, false),
1850 DEFINE_PROP_BIT("migrate-extra", VirtIOPCIProxy, flags,
1851 VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, true),
1852 DEFINE_PROP_BIT("modern-pio-notify", VirtIOPCIProxy, flags,
1853 VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, false),
1854 DEFINE_PROP_BIT("x-disable-pcie", VirtIOPCIProxy, flags,
1855 VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, false),
1856 DEFINE_PROP_BIT("page-per-vq", VirtIOPCIProxy, flags,
1857 VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT, false),
1858 DEFINE_PROP_END_OF_LIST(),
1861 static void virtio_pci_dc_realize(DeviceState *qdev, Error **errp)
1863 VirtioPCIClass *vpciklass = VIRTIO_PCI_GET_CLASS(qdev);
1864 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1865 PCIDevice *pci_dev = &proxy->pci_dev;
1867 if (!(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_PCIE) &&
1868 virtio_pci_modern(proxy)) {
1869 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
1872 vpciklass->parent_dc_realize(qdev, errp);
1875 static void virtio_pci_class_init(ObjectClass *klass, void *data)
1877 DeviceClass *dc = DEVICE_CLASS(klass);
1878 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1879 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
1881 dc->props = virtio_pci_properties;
1882 k->realize = virtio_pci_realize;
1883 k->exit = virtio_pci_exit;
1884 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1885 k->revision = VIRTIO_PCI_ABI_VERSION;
1886 k->class_id = PCI_CLASS_OTHERS;
1887 vpciklass->parent_dc_realize = dc->realize;
1888 dc->realize = virtio_pci_dc_realize;
1889 dc->reset = virtio_pci_reset;
1892 static const TypeInfo virtio_pci_info = {
1893 .name = TYPE_VIRTIO_PCI,
1894 .parent = TYPE_PCI_DEVICE,
1895 .instance_size = sizeof(VirtIOPCIProxy),
1896 .class_init = virtio_pci_class_init,
1897 .class_size = sizeof(VirtioPCIClass),
1901 /* virtio-blk-pci */
1903 static Property virtio_blk_pci_properties[] = {
1904 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
1905 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1906 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1907 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
1908 DEFINE_PROP_END_OF_LIST(),
1911 static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1913 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
1914 DeviceState *vdev = DEVICE(&dev->vdev);
1916 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1917 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1920 static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
1922 DeviceClass *dc = DEVICE_CLASS(klass);
1923 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1924 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1926 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1927 dc->props = virtio_blk_pci_properties;
1928 k->realize = virtio_blk_pci_realize;
1929 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1930 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
1931 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
1932 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
1935 static void virtio_blk_pci_instance_init(Object *obj)
1937 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
1939 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1941 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
1943 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
1944 "bootindex", &error_abort);
1947 static const TypeInfo virtio_blk_pci_info = {
1948 .name = TYPE_VIRTIO_BLK_PCI,
1949 .parent = TYPE_VIRTIO_PCI,
1950 .instance_size = sizeof(VirtIOBlkPCI),
1951 .instance_init = virtio_blk_pci_instance_init,
1952 .class_init = virtio_blk_pci_class_init,
1955 /* virtio-scsi-pci */
1957 static Property virtio_scsi_pci_properties[] = {
1958 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1959 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1960 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
1961 DEV_NVECTORS_UNSPECIFIED),
1962 DEFINE_PROP_END_OF_LIST(),
1965 static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1967 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev);
1968 DeviceState *vdev = DEVICE(&dev->vdev);
1969 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
1970 DeviceState *proxy = DEVICE(vpci_dev);
1973 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
1974 vpci_dev->nvectors = vs->conf.num_queues + 3;
1978 * For command line compatibility, this sets the virtio-scsi-device bus
1982 bus_name = g_strdup_printf("%s.0", proxy->id);
1983 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
1987 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1988 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1991 static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
1993 DeviceClass *dc = DEVICE_CLASS(klass);
1994 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1995 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1997 k->realize = virtio_scsi_pci_realize;
1998 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1999 dc->props = virtio_scsi_pci_properties;
2000 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2001 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2002 pcidev_k->revision = 0x00;
2003 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2006 static void virtio_scsi_pci_instance_init(Object *obj)
2008 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj);
2010 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2012 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread",
2016 static const TypeInfo virtio_scsi_pci_info = {
2017 .name = TYPE_VIRTIO_SCSI_PCI,
2018 .parent = TYPE_VIRTIO_PCI,
2019 .instance_size = sizeof(VirtIOSCSIPCI),
2020 .instance_init = virtio_scsi_pci_instance_init,
2021 .class_init = virtio_scsi_pci_class_init,
2024 /* vhost-scsi-pci */
2026 #ifdef CONFIG_VHOST_SCSI
2027 static Property vhost_scsi_pci_properties[] = {
2028 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
2029 DEV_NVECTORS_UNSPECIFIED),
2030 DEFINE_PROP_END_OF_LIST(),
2033 static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2035 VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev);
2036 DeviceState *vdev = DEVICE(&dev->vdev);
2037 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
2039 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2040 vpci_dev->nvectors = vs->conf.num_queues + 3;
2043 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2044 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2047 static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data)
2049 DeviceClass *dc = DEVICE_CLASS(klass);
2050 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2051 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2052 k->realize = vhost_scsi_pci_realize;
2053 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2054 dc->props = vhost_scsi_pci_properties;
2055 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2056 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2057 pcidev_k->revision = 0x00;
2058 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2061 static void vhost_scsi_pci_instance_init(Object *obj)
2063 VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj);
2065 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2067 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2068 "bootindex", &error_abort);
2071 static const TypeInfo vhost_scsi_pci_info = {
2072 .name = TYPE_VHOST_SCSI_PCI,
2073 .parent = TYPE_VIRTIO_PCI,
2074 .instance_size = sizeof(VHostSCSIPCI),
2075 .instance_init = vhost_scsi_pci_instance_init,
2076 .class_init = vhost_scsi_pci_class_init,
2080 /* vhost-vsock-pci */
2082 #ifdef CONFIG_VHOST_VSOCK
2083 static Property vhost_vsock_pci_properties[] = {
2084 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
2085 DEFINE_PROP_END_OF_LIST(),
2088 static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2090 VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev);
2091 DeviceState *vdev = DEVICE(&dev->vdev);
2093 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2094 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2097 static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
2099 DeviceClass *dc = DEVICE_CLASS(klass);
2100 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2101 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2102 k->realize = vhost_vsock_pci_realize;
2103 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2104 dc->props = vhost_vsock_pci_properties;
2105 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2106 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
2107 pcidev_k->revision = 0x00;
2108 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
2111 static void vhost_vsock_pci_instance_init(Object *obj)
2113 VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
2115 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2119 static const TypeInfo vhost_vsock_pci_info = {
2120 .name = TYPE_VHOST_VSOCK_PCI,
2121 .parent = TYPE_VIRTIO_PCI,
2122 .instance_size = sizeof(VHostVSockPCI),
2123 .instance_init = vhost_vsock_pci_instance_init,
2124 .class_init = vhost_vsock_pci_class_init,
2128 /* virtio-balloon-pci */
2130 static Property virtio_balloon_pci_properties[] = {
2131 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2132 DEFINE_PROP_END_OF_LIST(),
2135 static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2137 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
2138 DeviceState *vdev = DEVICE(&dev->vdev);
2140 if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
2141 vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
2142 vpci_dev->class_code = PCI_CLASS_OTHERS;
2145 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2146 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2149 static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
2151 DeviceClass *dc = DEVICE_CLASS(klass);
2152 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2153 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2154 k->realize = virtio_balloon_pci_realize;
2155 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2156 dc->props = virtio_balloon_pci_properties;
2157 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2158 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
2159 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2160 pcidev_k->class_id = PCI_CLASS_OTHERS;
2163 static void virtio_balloon_pci_instance_init(Object *obj)
2165 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
2167 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2168 TYPE_VIRTIO_BALLOON);
2169 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
2170 "guest-stats", &error_abort);
2171 object_property_add_alias(obj, "guest-stats-polling-interval",
2173 "guest-stats-polling-interval", &error_abort);
2176 static const TypeInfo virtio_balloon_pci_info = {
2177 .name = TYPE_VIRTIO_BALLOON_PCI,
2178 .parent = TYPE_VIRTIO_PCI,
2179 .instance_size = sizeof(VirtIOBalloonPCI),
2180 .instance_init = virtio_balloon_pci_instance_init,
2181 .class_init = virtio_balloon_pci_class_init,
2184 /* virtio-serial-pci */
2186 static void virtio_serial_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2188 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev);
2189 DeviceState *vdev = DEVICE(&dev->vdev);
2190 DeviceState *proxy = DEVICE(vpci_dev);
2193 if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
2194 vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
2195 vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */
2196 vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER;
2199 /* backwards-compatibility with machines that were created with
2200 DEV_NVECTORS_UNSPECIFIED */
2201 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2202 vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1;
2206 * For command line compatibility, this sets the virtio-serial-device bus
2210 bus_name = g_strdup_printf("%s.0", proxy->id);
2211 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
2215 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2216 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2219 static Property virtio_serial_pci_properties[] = {
2220 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2221 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
2222 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2223 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2224 DEFINE_PROP_END_OF_LIST(),
2227 static void virtio_serial_pci_class_init(ObjectClass *klass, void *data)
2229 DeviceClass *dc = DEVICE_CLASS(klass);
2230 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2231 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2232 k->realize = virtio_serial_pci_realize;
2233 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2234 dc->props = virtio_serial_pci_properties;
2235 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2236 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE;
2237 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2238 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
2241 static void virtio_serial_pci_instance_init(Object *obj)
2243 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj);
2245 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2246 TYPE_VIRTIO_SERIAL);
2249 static const TypeInfo virtio_serial_pci_info = {
2250 .name = TYPE_VIRTIO_SERIAL_PCI,
2251 .parent = TYPE_VIRTIO_PCI,
2252 .instance_size = sizeof(VirtIOSerialPCI),
2253 .instance_init = virtio_serial_pci_instance_init,
2254 .class_init = virtio_serial_pci_class_init,
2257 /* virtio-net-pci */
2259 static Property virtio_net_properties[] = {
2260 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2261 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
2262 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
2263 DEFINE_PROP_END_OF_LIST(),
2266 static void virtio_net_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2268 DeviceState *qdev = DEVICE(vpci_dev);
2269 VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev);
2270 DeviceState *vdev = DEVICE(&dev->vdev);
2272 virtio_net_set_netclient_name(&dev->vdev, qdev->id,
2273 object_get_typename(OBJECT(qdev)));
2274 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2275 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2278 static void virtio_net_pci_class_init(ObjectClass *klass, void *data)
2280 DeviceClass *dc = DEVICE_CLASS(klass);
2281 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2282 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
2284 k->romfile = "efi-virtio.rom";
2285 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2286 k->device_id = PCI_DEVICE_ID_VIRTIO_NET;
2287 k->revision = VIRTIO_PCI_ABI_VERSION;
2288 k->class_id = PCI_CLASS_NETWORK_ETHERNET;
2289 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2290 dc->props = virtio_net_properties;
2291 vpciklass->realize = virtio_net_pci_realize;
2294 static void virtio_net_pci_instance_init(Object *obj)
2296 VirtIONetPCI *dev = VIRTIO_NET_PCI(obj);
2298 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2300 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2301 "bootindex", &error_abort);
2304 static const TypeInfo virtio_net_pci_info = {
2305 .name = TYPE_VIRTIO_NET_PCI,
2306 .parent = TYPE_VIRTIO_PCI,
2307 .instance_size = sizeof(VirtIONetPCI),
2308 .instance_init = virtio_net_pci_instance_init,
2309 .class_init = virtio_net_pci_class_init,
2312 /* virtio-rng-pci */
2314 static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2316 VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
2317 DeviceState *vdev = DEVICE(&vrng->vdev);
2320 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2321 object_property_set_bool(OBJECT(vdev), true, "realized", &err);
2323 error_propagate(errp, err);
2327 object_property_set_link(OBJECT(vrng),
2328 OBJECT(vrng->vdev.conf.rng), "rng",
2332 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
2334 DeviceClass *dc = DEVICE_CLASS(klass);
2335 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2336 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2338 k->realize = virtio_rng_pci_realize;
2339 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2341 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2342 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
2343 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2344 pcidev_k->class_id = PCI_CLASS_OTHERS;
2347 static void virtio_rng_initfn(Object *obj)
2349 VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
2351 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2353 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), "rng",
2357 static const TypeInfo virtio_rng_pci_info = {
2358 .name = TYPE_VIRTIO_RNG_PCI,
2359 .parent = TYPE_VIRTIO_PCI,
2360 .instance_size = sizeof(VirtIORngPCI),
2361 .instance_init = virtio_rng_initfn,
2362 .class_init = virtio_rng_pci_class_init,
2365 /* virtio-input-pci */
2367 static Property virtio_input_pci_properties[] = {
2368 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2369 DEFINE_PROP_END_OF_LIST(),
2372 static void virtio_input_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2374 VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
2375 DeviceState *vdev = DEVICE(&vinput->vdev);
2377 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2378 virtio_pci_force_virtio_1(vpci_dev);
2379 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2382 static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
2384 DeviceClass *dc = DEVICE_CLASS(klass);
2385 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2386 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2388 dc->props = virtio_input_pci_properties;
2389 k->realize = virtio_input_pci_realize;
2390 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2392 pcidev_k->class_id = PCI_CLASS_INPUT_OTHER;
2395 static void virtio_input_hid_kbd_pci_class_init(ObjectClass *klass, void *data)
2397 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2399 pcidev_k->class_id = PCI_CLASS_INPUT_KEYBOARD;
2402 static void virtio_input_hid_mouse_pci_class_init(ObjectClass *klass,
2405 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2407 pcidev_k->class_id = PCI_CLASS_INPUT_MOUSE;
2410 static void virtio_keyboard_initfn(Object *obj)
2412 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2414 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2415 TYPE_VIRTIO_KEYBOARD);
2418 static void virtio_mouse_initfn(Object *obj)
2420 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2422 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2426 static void virtio_tablet_initfn(Object *obj)
2428 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2430 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2431 TYPE_VIRTIO_TABLET);
2434 static const TypeInfo virtio_input_pci_info = {
2435 .name = TYPE_VIRTIO_INPUT_PCI,
2436 .parent = TYPE_VIRTIO_PCI,
2437 .instance_size = sizeof(VirtIOInputPCI),
2438 .class_init = virtio_input_pci_class_init,
2442 static const TypeInfo virtio_input_hid_pci_info = {
2443 .name = TYPE_VIRTIO_INPUT_HID_PCI,
2444 .parent = TYPE_VIRTIO_INPUT_PCI,
2445 .instance_size = sizeof(VirtIOInputHIDPCI),
2449 static const TypeInfo virtio_keyboard_pci_info = {
2450 .name = TYPE_VIRTIO_KEYBOARD_PCI,
2451 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2452 .class_init = virtio_input_hid_kbd_pci_class_init,
2453 .instance_size = sizeof(VirtIOInputHIDPCI),
2454 .instance_init = virtio_keyboard_initfn,
2457 static const TypeInfo virtio_mouse_pci_info = {
2458 .name = TYPE_VIRTIO_MOUSE_PCI,
2459 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2460 .class_init = virtio_input_hid_mouse_pci_class_init,
2461 .instance_size = sizeof(VirtIOInputHIDPCI),
2462 .instance_init = virtio_mouse_initfn,
2465 static const TypeInfo virtio_tablet_pci_info = {
2466 .name = TYPE_VIRTIO_TABLET_PCI,
2467 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2468 .instance_size = sizeof(VirtIOInputHIDPCI),
2469 .instance_init = virtio_tablet_initfn,
2473 static void virtio_host_initfn(Object *obj)
2475 VirtIOInputHostPCI *dev = VIRTIO_INPUT_HOST_PCI(obj);
2477 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2478 TYPE_VIRTIO_INPUT_HOST);
2481 static const TypeInfo virtio_host_pci_info = {
2482 .name = TYPE_VIRTIO_INPUT_HOST_PCI,
2483 .parent = TYPE_VIRTIO_INPUT_PCI,
2484 .instance_size = sizeof(VirtIOInputHostPCI),
2485 .instance_init = virtio_host_initfn,
2489 /* virtio-pci-bus */
2491 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
2492 VirtIOPCIProxy *dev)
2494 DeviceState *qdev = DEVICE(dev);
2495 char virtio_bus_name[] = "virtio-bus";
2497 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_PCI_BUS, qdev,
2501 static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
2503 BusClass *bus_class = BUS_CLASS(klass);
2504 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
2505 bus_class->max_dev = 1;
2506 k->notify = virtio_pci_notify;
2507 k->save_config = virtio_pci_save_config;
2508 k->load_config = virtio_pci_load_config;
2509 k->save_queue = virtio_pci_save_queue;
2510 k->load_queue = virtio_pci_load_queue;
2511 k->save_extra_state = virtio_pci_save_extra_state;
2512 k->load_extra_state = virtio_pci_load_extra_state;
2513 k->has_extra_state = virtio_pci_has_extra_state;
2514 k->query_guest_notifiers = virtio_pci_query_guest_notifiers;
2515 k->set_guest_notifiers = virtio_pci_set_guest_notifiers;
2516 k->vmstate_change = virtio_pci_vmstate_change;
2517 k->pre_plugged = virtio_pci_pre_plugged;
2518 k->device_plugged = virtio_pci_device_plugged;
2519 k->device_unplugged = virtio_pci_device_unplugged;
2520 k->query_nvectors = virtio_pci_query_nvectors;
2521 k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
2522 k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
2525 static const TypeInfo virtio_pci_bus_info = {
2526 .name = TYPE_VIRTIO_PCI_BUS,
2527 .parent = TYPE_VIRTIO_BUS,
2528 .instance_size = sizeof(VirtioPCIBusState),
2529 .class_init = virtio_pci_bus_class_init,
2532 static void virtio_pci_register_types(void)
2534 type_register_static(&virtio_rng_pci_info);
2535 type_register_static(&virtio_input_pci_info);
2536 type_register_static(&virtio_input_hid_pci_info);
2537 type_register_static(&virtio_keyboard_pci_info);
2538 type_register_static(&virtio_mouse_pci_info);
2539 type_register_static(&virtio_tablet_pci_info);
2541 type_register_static(&virtio_host_pci_info);
2543 type_register_static(&virtio_pci_bus_info);
2544 type_register_static(&virtio_pci_info);
2545 #ifdef CONFIG_VIRTFS
2546 type_register_static(&virtio_9p_pci_info);
2548 type_register_static(&virtio_blk_pci_info);
2549 type_register_static(&virtio_scsi_pci_info);
2550 type_register_static(&virtio_balloon_pci_info);
2551 type_register_static(&virtio_serial_pci_info);
2552 type_register_static(&virtio_net_pci_info);
2553 #ifdef CONFIG_VHOST_SCSI
2554 type_register_static(&vhost_scsi_pci_info);
2556 #ifdef CONFIG_VHOST_VSOCK
2557 type_register_static(&vhost_vsock_pci_info);
2561 type_init(virtio_pci_register_types)