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18#include "qemu/osdep.h"
19
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 "virtio-pci.h"
36#include "qemu/range.h"
37#include "hw/virtio/virtio-bus.h"
38#include "qapi/visitor.h"
39
40#define VIRTIO_PCI_REGION_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_present(dev))
41
42#undef VIRTIO_PCI_CONFIG
43
44
45
46#define VIRTIO_PCI_CONFIG_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_enabled(dev))
47
48static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
49 VirtIOPCIProxy *dev);
50static void virtio_pci_reset(DeviceState *qdev);
51
52
53
54static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d)
55{
56 return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
57}
58
59
60
61
62static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d)
63{
64 return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
65}
66
67static void virtio_pci_notify(DeviceState *d, uint16_t vector)
68{
69 VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d);
70
71 if (msix_enabled(&proxy->pci_dev))
72 msix_notify(&proxy->pci_dev, vector);
73 else {
74 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
75 pci_set_irq(&proxy->pci_dev, atomic_read(&vdev->isr) & 1);
76 }
77}
78
79static void virtio_pci_save_config(DeviceState *d, QEMUFile *f)
80{
81 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
82 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
83
84 pci_device_save(&proxy->pci_dev, f);
85 msix_save(&proxy->pci_dev, f);
86 if (msix_present(&proxy->pci_dev))
87 qemu_put_be16(f, vdev->config_vector);
88}
89
90static const VMStateDescription vmstate_virtio_pci_modern_queue_state = {
91 .name = "virtio_pci/modern_queue_state",
92 .version_id = 1,
93 .minimum_version_id = 1,
94 .fields = (VMStateField[]) {
95 VMSTATE_UINT16(num, VirtIOPCIQueue),
96 VMSTATE_UNUSED(1),
97 VMSTATE_BOOL(enabled, VirtIOPCIQueue),
98 VMSTATE_UINT32_ARRAY(desc, VirtIOPCIQueue, 2),
99 VMSTATE_UINT32_ARRAY(avail, VirtIOPCIQueue, 2),
100 VMSTATE_UINT32_ARRAY(used, VirtIOPCIQueue, 2),
101 VMSTATE_END_OF_LIST()
102 }
103};
104
105static bool virtio_pci_modern_state_needed(void *opaque)
106{
107 VirtIOPCIProxy *proxy = opaque;
108
109 return virtio_pci_modern(proxy);
110}
111
112static const VMStateDescription vmstate_virtio_pci_modern_state_sub = {
113 .name = "virtio_pci/modern_state",
114 .version_id = 1,
115 .minimum_version_id = 1,
116 .needed = &virtio_pci_modern_state_needed,
117 .fields = (VMStateField[]) {
118 VMSTATE_UINT32(dfselect, VirtIOPCIProxy),
119 VMSTATE_UINT32(gfselect, VirtIOPCIProxy),
120 VMSTATE_UINT32_ARRAY(guest_features, VirtIOPCIProxy, 2),
121 VMSTATE_STRUCT_ARRAY(vqs, VirtIOPCIProxy, VIRTIO_QUEUE_MAX, 0,
122 vmstate_virtio_pci_modern_queue_state,
123 VirtIOPCIQueue),
124 VMSTATE_END_OF_LIST()
125 }
126};
127
128static const VMStateDescription vmstate_virtio_pci = {
129 .name = "virtio_pci",
130 .version_id = 1,
131 .minimum_version_id = 1,
132 .minimum_version_id_old = 1,
133 .fields = (VMStateField[]) {
134 VMSTATE_END_OF_LIST()
135 },
136 .subsections = (const VMStateDescription*[]) {
137 &vmstate_virtio_pci_modern_state_sub,
138 NULL
139 }
140};
141
142static bool virtio_pci_has_extra_state(DeviceState *d)
143{
144 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
145
146 return proxy->flags & VIRTIO_PCI_FLAG_MIGRATE_EXTRA;
147}
148
149static void virtio_pci_save_extra_state(DeviceState *d, QEMUFile *f)
150{
151 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
152
153 vmstate_save_state(f, &vmstate_virtio_pci, proxy, NULL);
154}
155
156static int virtio_pci_load_extra_state(DeviceState *d, QEMUFile *f)
157{
158 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
159
160 return vmstate_load_state(f, &vmstate_virtio_pci, proxy, 1);
161}
162
163static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f)
164{
165 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
166 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
167
168 if (msix_present(&proxy->pci_dev))
169 qemu_put_be16(f, virtio_queue_vector(vdev, n));
170}
171
172static int virtio_pci_load_config(DeviceState *d, QEMUFile *f)
173{
174 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
175 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
176
177 int ret;
178 ret = pci_device_load(&proxy->pci_dev, f);
179 if (ret) {
180 return ret;
181 }
182 msix_unuse_all_vectors(&proxy->pci_dev);
183 msix_load(&proxy->pci_dev, f);
184 if (msix_present(&proxy->pci_dev)) {
185 qemu_get_be16s(f, &vdev->config_vector);
186 } else {
187 vdev->config_vector = VIRTIO_NO_VECTOR;
188 }
189 if (vdev->config_vector != VIRTIO_NO_VECTOR) {
190 return msix_vector_use(&proxy->pci_dev, vdev->config_vector);
191 }
192 return 0;
193}
194
195static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f)
196{
197 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
198 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
199
200 uint16_t vector;
201 if (msix_present(&proxy->pci_dev)) {
202 qemu_get_be16s(f, &vector);
203 } else {
204 vector = VIRTIO_NO_VECTOR;
205 }
206 virtio_queue_set_vector(vdev, n, vector);
207 if (vector != VIRTIO_NO_VECTOR) {
208 return msix_vector_use(&proxy->pci_dev, vector);
209 }
210
211 return 0;
212}
213
214static bool virtio_pci_ioeventfd_enabled(DeviceState *d)
215{
216 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
217
218 return (proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) != 0;
219}
220
221#define QEMU_VIRTIO_PCI_QUEUE_MEM_MULT 0x1000
222
223static inline int virtio_pci_queue_mem_mult(struct VirtIOPCIProxy *proxy)
224{
225 return (proxy->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ) ?
226 QEMU_VIRTIO_PCI_QUEUE_MEM_MULT : 4;
227}
228
229static int virtio_pci_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
230 int n, bool assign)
231{
232 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
233 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
234 VirtQueue *vq = virtio_get_queue(vdev, n);
235 bool legacy = virtio_pci_legacy(proxy);
236 bool modern = virtio_pci_modern(proxy);
237 bool fast_mmio = kvm_ioeventfd_any_length_enabled();
238 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
239 MemoryRegion *modern_mr = &proxy->notify.mr;
240 MemoryRegion *modern_notify_mr = &proxy->notify_pio.mr;
241 MemoryRegion *legacy_mr = &proxy->bar;
242 hwaddr modern_addr = virtio_pci_queue_mem_mult(proxy) *
243 virtio_get_queue_index(vq);
244 hwaddr legacy_addr = VIRTIO_PCI_QUEUE_NOTIFY;
245
246 if (assign) {
247 if (modern) {
248 if (fast_mmio) {
249 memory_region_add_eventfd(modern_mr, modern_addr, 0,
250 false, n, notifier);
251 } else {
252 memory_region_add_eventfd(modern_mr, modern_addr, 2,
253 false, n, notifier);
254 }
255 if (modern_pio) {
256 memory_region_add_eventfd(modern_notify_mr, 0, 2,
257 true, n, notifier);
258 }
259 }
260 if (legacy) {
261 memory_region_add_eventfd(legacy_mr, legacy_addr, 2,
262 true, n, notifier);
263 }
264 } else {
265 if (modern) {
266 if (fast_mmio) {
267 memory_region_del_eventfd(modern_mr, modern_addr, 0,
268 false, n, notifier);
269 } else {
270 memory_region_del_eventfd(modern_mr, modern_addr, 2,
271 false, n, notifier);
272 }
273 if (modern_pio) {
274 memory_region_del_eventfd(modern_notify_mr, 0, 2,
275 true, n, notifier);
276 }
277 }
278 if (legacy) {
279 memory_region_del_eventfd(legacy_mr, legacy_addr, 2,
280 true, n, notifier);
281 }
282 }
283 return 0;
284}
285
286static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy)
287{
288 virtio_bus_start_ioeventfd(&proxy->bus);
289}
290
291static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy)
292{
293 virtio_bus_stop_ioeventfd(&proxy->bus);
294}
295
296static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
297{
298 VirtIOPCIProxy *proxy = opaque;
299 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
300 hwaddr pa;
301
302 switch (addr) {
303 case VIRTIO_PCI_GUEST_FEATURES:
304
305 if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
306 val = virtio_bus_get_vdev_bad_features(&proxy->bus);
307 }
308 virtio_set_features(vdev, val);
309 break;
310 case VIRTIO_PCI_QUEUE_PFN:
311 pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
312 if (pa == 0) {
313 virtio_pci_reset(DEVICE(proxy));
314 }
315 else
316 virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
317 break;
318 case VIRTIO_PCI_QUEUE_SEL:
319 if (val < VIRTIO_QUEUE_MAX)
320 vdev->queue_sel = val;
321 break;
322 case VIRTIO_PCI_QUEUE_NOTIFY:
323 if (val < VIRTIO_QUEUE_MAX) {
324 virtio_queue_notify(vdev, val);
325 }
326 break;
327 case VIRTIO_PCI_STATUS:
328 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
329 virtio_pci_stop_ioeventfd(proxy);
330 }
331
332 virtio_set_status(vdev, val & 0xFF);
333
334 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
335 virtio_pci_start_ioeventfd(proxy);
336 }
337
338 if (vdev->status == 0) {
339 virtio_pci_reset(DEVICE(proxy));
340 }
341
342
343
344
345
346 if (val == (VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER)) {
347 pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
348 proxy->pci_dev.config[PCI_COMMAND] |
349 PCI_COMMAND_MASTER, 1);
350 }
351 break;
352 case VIRTIO_MSI_CONFIG_VECTOR:
353 msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
354
355 if (msix_vector_use(&proxy->pci_dev, val) < 0)
356 val = VIRTIO_NO_VECTOR;
357 vdev->config_vector = val;
358 break;
359 case VIRTIO_MSI_QUEUE_VECTOR:
360 msix_vector_unuse(&proxy->pci_dev,
361 virtio_queue_vector(vdev, vdev->queue_sel));
362
363 if (msix_vector_use(&proxy->pci_dev, val) < 0)
364 val = VIRTIO_NO_VECTOR;
365 virtio_queue_set_vector(vdev, vdev->queue_sel, val);
366 break;
367 default:
368 error_report("%s: unexpected address 0x%x value 0x%x",
369 __func__, addr, val);
370 break;
371 }
372}
373
374static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
375{
376 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
377 uint32_t ret = 0xFFFFFFFF;
378
379 switch (addr) {
380 case VIRTIO_PCI_HOST_FEATURES:
381 ret = vdev->host_features;
382 break;
383 case VIRTIO_PCI_GUEST_FEATURES:
384 ret = vdev->guest_features;
385 break;
386 case VIRTIO_PCI_QUEUE_PFN:
387 ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
388 >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
389 break;
390 case VIRTIO_PCI_QUEUE_NUM:
391 ret = virtio_queue_get_num(vdev, vdev->queue_sel);
392 break;
393 case VIRTIO_PCI_QUEUE_SEL:
394 ret = vdev->queue_sel;
395 break;
396 case VIRTIO_PCI_STATUS:
397 ret = vdev->status;
398 break;
399 case VIRTIO_PCI_ISR:
400
401 ret = atomic_xchg(&vdev->isr, 0);
402 pci_irq_deassert(&proxy->pci_dev);
403 break;
404 case VIRTIO_MSI_CONFIG_VECTOR:
405 ret = vdev->config_vector;
406 break;
407 case VIRTIO_MSI_QUEUE_VECTOR:
408 ret = virtio_queue_vector(vdev, vdev->queue_sel);
409 break;
410 default:
411 break;
412 }
413
414 return ret;
415}
416
417static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr,
418 unsigned size)
419{
420 VirtIOPCIProxy *proxy = opaque;
421 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
422 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
423 uint64_t val = 0;
424 if (addr < config) {
425 return virtio_ioport_read(proxy, addr);
426 }
427 addr -= config;
428
429 switch (size) {
430 case 1:
431 val = virtio_config_readb(vdev, addr);
432 break;
433 case 2:
434 val = virtio_config_readw(vdev, addr);
435 if (virtio_is_big_endian(vdev)) {
436 val = bswap16(val);
437 }
438 break;
439 case 4:
440 val = virtio_config_readl(vdev, addr);
441 if (virtio_is_big_endian(vdev)) {
442 val = bswap32(val);
443 }
444 break;
445 }
446 return val;
447}
448
449static void virtio_pci_config_write(void *opaque, hwaddr addr,
450 uint64_t val, unsigned size)
451{
452 VirtIOPCIProxy *proxy = opaque;
453 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
454 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
455 if (addr < config) {
456 virtio_ioport_write(proxy, addr, val);
457 return;
458 }
459 addr -= config;
460
461
462
463
464 switch (size) {
465 case 1:
466 virtio_config_writeb(vdev, addr, val);
467 break;
468 case 2:
469 if (virtio_is_big_endian(vdev)) {
470 val = bswap16(val);
471 }
472 virtio_config_writew(vdev, addr, val);
473 break;
474 case 4:
475 if (virtio_is_big_endian(vdev)) {
476 val = bswap32(val);
477 }
478 virtio_config_writel(vdev, addr, val);
479 break;
480 }
481}
482
483static const MemoryRegionOps virtio_pci_config_ops = {
484 .read = virtio_pci_config_read,
485 .write = virtio_pci_config_write,
486 .impl = {
487 .min_access_size = 1,
488 .max_access_size = 4,
489 },
490 .endianness = DEVICE_LITTLE_ENDIAN,
491};
492
493static MemoryRegion *virtio_address_space_lookup(VirtIOPCIProxy *proxy,
494 hwaddr *off, int len)
495{
496 int i;
497 VirtIOPCIRegion *reg;
498
499 for (i = 0; i < ARRAY_SIZE(proxy->regs); ++i) {
500 reg = &proxy->regs[i];
501 if (*off >= reg->offset &&
502 *off + len <= reg->offset + reg->size) {
503 *off -= reg->offset;
504 return ®->mr;
505 }
506 }
507
508 return NULL;
509}
510
511
512
513
514
515
516
517
518
519
520
521
522
523static
524void virtio_address_space_write(VirtIOPCIProxy *proxy, hwaddr addr,
525 const uint8_t *buf, int len)
526{
527 uint64_t val;
528 MemoryRegion *mr;
529
530
531
532
533 addr &= ~(len - 1);
534
535 mr = virtio_address_space_lookup(proxy, &addr, len);
536 if (!mr) {
537 return;
538 }
539
540
541 assert(!(((uintptr_t)buf) & (len - 1)));
542
543 switch (len) {
544 case 1:
545 val = pci_get_byte(buf);
546 break;
547 case 2:
548 val = cpu_to_le16(pci_get_word(buf));
549 break;
550 case 4:
551 val = cpu_to_le32(pci_get_long(buf));
552 break;
553 default:
554
555 return;
556 }
557 memory_region_dispatch_write(mr, addr, val, len, MEMTXATTRS_UNSPECIFIED);
558}
559
560static void
561virtio_address_space_read(VirtIOPCIProxy *proxy, hwaddr addr,
562 uint8_t *buf, int len)
563{
564 uint64_t val;
565 MemoryRegion *mr;
566
567
568
569
570 addr &= ~(len - 1);
571
572 mr = virtio_address_space_lookup(proxy, &addr, len);
573 if (!mr) {
574 return;
575 }
576
577
578 assert(!(((uintptr_t)buf) & (len - 1)));
579
580 memory_region_dispatch_read(mr, addr, &val, len, MEMTXATTRS_UNSPECIFIED);
581 switch (len) {
582 case 1:
583 pci_set_byte(buf, val);
584 break;
585 case 2:
586 pci_set_word(buf, le16_to_cpu(val));
587 break;
588 case 4:
589 pci_set_long(buf, le32_to_cpu(val));
590 break;
591 default:
592
593 break;
594 }
595}
596
597static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
598 uint32_t val, int len)
599{
600 VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
601 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
602 struct virtio_pci_cfg_cap *cfg;
603
604 pci_default_write_config(pci_dev, address, val, len);
605
606 if (range_covers_byte(address, len, PCI_COMMAND) &&
607 !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
608 virtio_pci_stop_ioeventfd(proxy);
609 virtio_set_status(vdev, vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK);
610 }
611
612 if (proxy->config_cap &&
613 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
614 pci_cfg_data),
615 sizeof cfg->pci_cfg_data)) {
616 uint32_t off;
617 uint32_t len;
618
619 cfg = (void *)(proxy->pci_dev.config + proxy->config_cap);
620 off = le32_to_cpu(cfg->cap.offset);
621 len = le32_to_cpu(cfg->cap.length);
622
623 if (len == 1 || len == 2 || len == 4) {
624 assert(len <= sizeof cfg->pci_cfg_data);
625 virtio_address_space_write(proxy, off, cfg->pci_cfg_data, len);
626 }
627 }
628}
629
630static uint32_t virtio_read_config(PCIDevice *pci_dev,
631 uint32_t address, int len)
632{
633 VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
634 struct virtio_pci_cfg_cap *cfg;
635
636 if (proxy->config_cap &&
637 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
638 pci_cfg_data),
639 sizeof cfg->pci_cfg_data)) {
640 uint32_t off;
641 uint32_t len;
642
643 cfg = (void *)(proxy->pci_dev.config + proxy->config_cap);
644 off = le32_to_cpu(cfg->cap.offset);
645 len = le32_to_cpu(cfg->cap.length);
646
647 if (len == 1 || len == 2 || len == 4) {
648 assert(len <= sizeof cfg->pci_cfg_data);
649 virtio_address_space_read(proxy, off, cfg->pci_cfg_data, len);
650 }
651 }
652
653 return pci_default_read_config(pci_dev, address, len);
654}
655
656static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy,
657 unsigned int queue_no,
658 unsigned int vector)
659{
660 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
661 int ret;
662
663 if (irqfd->users == 0) {
664 ret = kvm_irqchip_add_msi_route(kvm_state, vector, &proxy->pci_dev);
665 if (ret < 0) {
666 return ret;
667 }
668 irqfd->virq = ret;
669 }
670 irqfd->users++;
671 return 0;
672}
673
674static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy,
675 unsigned int vector)
676{
677 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
678 if (--irqfd->users == 0) {
679 kvm_irqchip_release_virq(kvm_state, irqfd->virq);
680 }
681}
682
683static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy,
684 unsigned int queue_no,
685 unsigned int vector)
686{
687 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
688 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
689 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
690 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
691 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, irqfd->virq);
692}
693
694static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy,
695 unsigned int queue_no,
696 unsigned int vector)
697{
698 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
699 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
700 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
701 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
702 int ret;
703
704 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, n, irqfd->virq);
705 assert(ret == 0);
706}
707
708static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
709{
710 PCIDevice *dev = &proxy->pci_dev;
711 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
712 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
713 unsigned int vector;
714 int ret, queue_no;
715
716 for (queue_no = 0; queue_no < nvqs; queue_no++) {
717 if (!virtio_queue_get_num(vdev, queue_no)) {
718 break;
719 }
720 vector = virtio_queue_vector(vdev, queue_no);
721 if (vector >= msix_nr_vectors_allocated(dev)) {
722 continue;
723 }
724 ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector);
725 if (ret < 0) {
726 goto undo;
727 }
728
729
730
731 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
732 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
733 if (ret < 0) {
734 kvm_virtio_pci_vq_vector_release(proxy, vector);
735 goto undo;
736 }
737 }
738 }
739 return 0;
740
741undo:
742 while (--queue_no >= 0) {
743 vector = virtio_queue_vector(vdev, queue_no);
744 if (vector >= msix_nr_vectors_allocated(dev)) {
745 continue;
746 }
747 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
748 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
749 }
750 kvm_virtio_pci_vq_vector_release(proxy, vector);
751 }
752 return ret;
753}
754
755static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
756{
757 PCIDevice *dev = &proxy->pci_dev;
758 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
759 unsigned int vector;
760 int queue_no;
761 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
762
763 for (queue_no = 0; queue_no < nvqs; queue_no++) {
764 if (!virtio_queue_get_num(vdev, queue_no)) {
765 break;
766 }
767 vector = virtio_queue_vector(vdev, queue_no);
768 if (vector >= msix_nr_vectors_allocated(dev)) {
769 continue;
770 }
771
772
773
774 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
775 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
776 }
777 kvm_virtio_pci_vq_vector_release(proxy, vector);
778 }
779}
780
781static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy,
782 unsigned int queue_no,
783 unsigned int vector,
784 MSIMessage msg)
785{
786 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
787 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
788 VirtQueue *vq = virtio_get_queue(vdev, queue_no);
789 EventNotifier *n = virtio_queue_get_guest_notifier(vq);
790 VirtIOIRQFD *irqfd;
791 int ret = 0;
792
793 if (proxy->vector_irqfd) {
794 irqfd = &proxy->vector_irqfd[vector];
795 if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) {
796 ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg,
797 &proxy->pci_dev);
798 if (ret < 0) {
799 return ret;
800 }
801 kvm_irqchip_commit_routes(kvm_state);
802 }
803 }
804
805
806
807
808 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
809 k->guest_notifier_mask(vdev, queue_no, false);
810
811 if (k->guest_notifier_pending &&
812 k->guest_notifier_pending(vdev, queue_no)) {
813 event_notifier_set(n);
814 }
815 } else {
816 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
817 }
818 return ret;
819}
820
821static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy,
822 unsigned int queue_no,
823 unsigned int vector)
824{
825 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
826 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
827
828
829
830
831 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
832 k->guest_notifier_mask(vdev, queue_no, true);
833 } else {
834 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
835 }
836}
837
838static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
839 MSIMessage msg)
840{
841 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
842 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
843 VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
844 int ret, index, unmasked = 0;
845
846 while (vq) {
847 index = virtio_get_queue_index(vq);
848 if (!virtio_queue_get_num(vdev, index)) {
849 break;
850 }
851 if (index < proxy->nvqs_with_notifiers) {
852 ret = virtio_pci_vq_vector_unmask(proxy, index, vector, msg);
853 if (ret < 0) {
854 goto undo;
855 }
856 ++unmasked;
857 }
858 vq = virtio_vector_next_queue(vq);
859 }
860
861 return 0;
862
863undo:
864 vq = virtio_vector_first_queue(vdev, vector);
865 while (vq && unmasked >= 0) {
866 index = virtio_get_queue_index(vq);
867 if (index < proxy->nvqs_with_notifiers) {
868 virtio_pci_vq_vector_mask(proxy, index, vector);
869 --unmasked;
870 }
871 vq = virtio_vector_next_queue(vq);
872 }
873 return ret;
874}
875
876static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector)
877{
878 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
879 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
880 VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
881 int index;
882
883 while (vq) {
884 index = virtio_get_queue_index(vq);
885 if (!virtio_queue_get_num(vdev, index)) {
886 break;
887 }
888 if (index < proxy->nvqs_with_notifiers) {
889 virtio_pci_vq_vector_mask(proxy, index, vector);
890 }
891 vq = virtio_vector_next_queue(vq);
892 }
893}
894
895static void virtio_pci_vector_poll(PCIDevice *dev,
896 unsigned int vector_start,
897 unsigned int vector_end)
898{
899 VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
900 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
901 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
902 int queue_no;
903 unsigned int vector;
904 EventNotifier *notifier;
905 VirtQueue *vq;
906
907 for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) {
908 if (!virtio_queue_get_num(vdev, queue_no)) {
909 break;
910 }
911 vector = virtio_queue_vector(vdev, queue_no);
912 if (vector < vector_start || vector >= vector_end ||
913 !msix_is_masked(dev, vector)) {
914 continue;
915 }
916 vq = virtio_get_queue(vdev, queue_no);
917 notifier = virtio_queue_get_guest_notifier(vq);
918 if (k->guest_notifier_pending) {
919 if (k->guest_notifier_pending(vdev, queue_no)) {
920 msix_set_pending(dev, vector);
921 }
922 } else if (event_notifier_test_and_clear(notifier)) {
923 msix_set_pending(dev, vector);
924 }
925 }
926}
927
928static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
929 bool with_irqfd)
930{
931 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
932 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
933 VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
934 VirtQueue *vq = virtio_get_queue(vdev, n);
935 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
936
937 if (assign) {
938 int r = event_notifier_init(notifier, 0);
939 if (r < 0) {
940 return r;
941 }
942 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
943 } else {
944 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
945 event_notifier_cleanup(notifier);
946 }
947
948 if (!msix_enabled(&proxy->pci_dev) &&
949 vdev->use_guest_notifier_mask &&
950 vdc->guest_notifier_mask) {
951 vdc->guest_notifier_mask(vdev, n, !assign);
952 }
953
954 return 0;
955}
956
957static bool virtio_pci_query_guest_notifiers(DeviceState *d)
958{
959 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
960 return msix_enabled(&proxy->pci_dev);
961}
962
963static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
964{
965 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
966 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
967 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
968 int r, n;
969 bool with_irqfd = msix_enabled(&proxy->pci_dev) &&
970 kvm_msi_via_irqfd_enabled();
971
972 nvqs = MIN(nvqs, VIRTIO_QUEUE_MAX);
973
974
975
976
977 assert(assign || nvqs == proxy->nvqs_with_notifiers);
978
979 proxy->nvqs_with_notifiers = nvqs;
980
981
982 if ((proxy->vector_irqfd || k->guest_notifier_mask) && !assign) {
983 msix_unset_vector_notifiers(&proxy->pci_dev);
984 if (proxy->vector_irqfd) {
985 kvm_virtio_pci_vector_release(proxy, nvqs);
986 g_free(proxy->vector_irqfd);
987 proxy->vector_irqfd = NULL;
988 }
989 }
990
991 for (n = 0; n < nvqs; n++) {
992 if (!virtio_queue_get_num(vdev, n)) {
993 break;
994 }
995
996 r = virtio_pci_set_guest_notifier(d, n, assign, with_irqfd);
997 if (r < 0) {
998 goto assign_error;
999 }
1000 }
1001
1002
1003 if ((with_irqfd || k->guest_notifier_mask) && assign) {
1004 if (with_irqfd) {
1005 proxy->vector_irqfd =
1006 g_malloc0(sizeof(*proxy->vector_irqfd) *
1007 msix_nr_vectors_allocated(&proxy->pci_dev));
1008 r = kvm_virtio_pci_vector_use(proxy, nvqs);
1009 if (r < 0) {
1010 goto assign_error;
1011 }
1012 }
1013 r = msix_set_vector_notifiers(&proxy->pci_dev,
1014 virtio_pci_vector_unmask,
1015 virtio_pci_vector_mask,
1016 virtio_pci_vector_poll);
1017 if (r < 0) {
1018 goto notifiers_error;
1019 }
1020 }
1021
1022 return 0;
1023
1024notifiers_error:
1025 if (with_irqfd) {
1026 assert(assign);
1027 kvm_virtio_pci_vector_release(proxy, nvqs);
1028 }
1029
1030assign_error:
1031
1032 assert(assign);
1033 while (--n >= 0) {
1034 virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd);
1035 }
1036 return r;
1037}
1038
1039static int virtio_pci_set_host_notifier_mr(DeviceState *d, int n,
1040 MemoryRegion *mr, bool assign)
1041{
1042 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1043 int offset;
1044
1045 if (n >= VIRTIO_QUEUE_MAX || !virtio_pci_modern(proxy) ||
1046 virtio_pci_queue_mem_mult(proxy) != memory_region_size(mr)) {
1047 return -1;
1048 }
1049
1050 if (assign) {
1051 offset = virtio_pci_queue_mem_mult(proxy) * n;
1052 memory_region_add_subregion_overlap(&proxy->notify.mr, offset, mr, 1);
1053 } else {
1054 memory_region_del_subregion(&proxy->notify.mr, mr);
1055 }
1056
1057 return 0;
1058}
1059
1060static void virtio_pci_vmstate_change(DeviceState *d, bool running)
1061{
1062 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1063 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1064
1065 if (running) {
1066
1067
1068
1069 if ((proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION) &&
1070 (vdev->status & VIRTIO_CONFIG_S_DRIVER) &&
1071 !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
1072 pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
1073 proxy->pci_dev.config[PCI_COMMAND] |
1074 PCI_COMMAND_MASTER, 1);
1075 }
1076 virtio_pci_start_ioeventfd(proxy);
1077 } else {
1078 virtio_pci_stop_ioeventfd(proxy);
1079 }
1080}
1081
1082#ifdef CONFIG_VIRTFS
1083static void virtio_9p_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1084{
1085 V9fsPCIState *dev = VIRTIO_9P_PCI(vpci_dev);
1086 DeviceState *vdev = DEVICE(&dev->vdev);
1087
1088 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1089 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1090}
1091
1092static Property virtio_9p_pci_properties[] = {
1093 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1094 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1095 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
1096 DEFINE_PROP_END_OF_LIST(),
1097};
1098
1099static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
1100{
1101 DeviceClass *dc = DEVICE_CLASS(klass);
1102 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1103 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1104
1105 k->realize = virtio_9p_pci_realize;
1106 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1107 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
1108 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
1109 pcidev_k->class_id = 0x2;
1110 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1111 dc->props = virtio_9p_pci_properties;
1112}
1113
1114static void virtio_9p_pci_instance_init(Object *obj)
1115{
1116 V9fsPCIState *dev = VIRTIO_9P_PCI(obj);
1117
1118 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1119 TYPE_VIRTIO_9P);
1120}
1121
1122static const TypeInfo virtio_9p_pci_info = {
1123 .name = TYPE_VIRTIO_9P_PCI,
1124 .parent = TYPE_VIRTIO_PCI,
1125 .instance_size = sizeof(V9fsPCIState),
1126 .instance_init = virtio_9p_pci_instance_init,
1127 .class_init = virtio_9p_pci_class_init,
1128};
1129#endif
1130
1131
1132
1133
1134
1135static int virtio_pci_query_nvectors(DeviceState *d)
1136{
1137 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1138
1139 return proxy->nvectors;
1140}
1141
1142static AddressSpace *virtio_pci_get_dma_as(DeviceState *d)
1143{
1144 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1145 PCIDevice *dev = &proxy->pci_dev;
1146
1147 return pci_get_address_space(dev);
1148}
1149
1150static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
1151 struct virtio_pci_cap *cap)
1152{
1153 PCIDevice *dev = &proxy->pci_dev;
1154 int offset;
1155
1156 offset = pci_add_capability(dev, PCI_CAP_ID_VNDR, 0,
1157 cap->cap_len, &error_abort);
1158
1159 assert(cap->cap_len >= sizeof *cap);
1160 memcpy(dev->config + offset + PCI_CAP_FLAGS, &cap->cap_len,
1161 cap->cap_len - PCI_CAP_FLAGS);
1162
1163 return offset;
1164}
1165
1166static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr,
1167 unsigned size)
1168{
1169 VirtIOPCIProxy *proxy = opaque;
1170 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1171 uint32_t val = 0;
1172 int i;
1173
1174 switch (addr) {
1175 case VIRTIO_PCI_COMMON_DFSELECT:
1176 val = proxy->dfselect;
1177 break;
1178 case VIRTIO_PCI_COMMON_DF:
1179 if (proxy->dfselect <= 1) {
1180 VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
1181
1182 val = (vdev->host_features & ~vdc->legacy_features) >>
1183 (32 * proxy->dfselect);
1184 }
1185 break;
1186 case VIRTIO_PCI_COMMON_GFSELECT:
1187 val = proxy->gfselect;
1188 break;
1189 case VIRTIO_PCI_COMMON_GF:
1190 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1191 val = proxy->guest_features[proxy->gfselect];
1192 }
1193 break;
1194 case VIRTIO_PCI_COMMON_MSIX:
1195 val = vdev->config_vector;
1196 break;
1197 case VIRTIO_PCI_COMMON_NUMQ:
1198 for (i = 0; i < VIRTIO_QUEUE_MAX; ++i) {
1199 if (virtio_queue_get_num(vdev, i)) {
1200 val = i + 1;
1201 }
1202 }
1203 break;
1204 case VIRTIO_PCI_COMMON_STATUS:
1205 val = vdev->status;
1206 break;
1207 case VIRTIO_PCI_COMMON_CFGGENERATION:
1208 val = vdev->generation;
1209 break;
1210 case VIRTIO_PCI_COMMON_Q_SELECT:
1211 val = vdev->queue_sel;
1212 break;
1213 case VIRTIO_PCI_COMMON_Q_SIZE:
1214 val = virtio_queue_get_num(vdev, vdev->queue_sel);
1215 break;
1216 case VIRTIO_PCI_COMMON_Q_MSIX:
1217 val = virtio_queue_vector(vdev, vdev->queue_sel);
1218 break;
1219 case VIRTIO_PCI_COMMON_Q_ENABLE:
1220 val = proxy->vqs[vdev->queue_sel].enabled;
1221 break;
1222 case VIRTIO_PCI_COMMON_Q_NOFF:
1223
1224 val = vdev->queue_sel;
1225 break;
1226 case VIRTIO_PCI_COMMON_Q_DESCLO:
1227 val = proxy->vqs[vdev->queue_sel].desc[0];
1228 break;
1229 case VIRTIO_PCI_COMMON_Q_DESCHI:
1230 val = proxy->vqs[vdev->queue_sel].desc[1];
1231 break;
1232 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1233 val = proxy->vqs[vdev->queue_sel].avail[0];
1234 break;
1235 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1236 val = proxy->vqs[vdev->queue_sel].avail[1];
1237 break;
1238 case VIRTIO_PCI_COMMON_Q_USEDLO:
1239 val = proxy->vqs[vdev->queue_sel].used[0];
1240 break;
1241 case VIRTIO_PCI_COMMON_Q_USEDHI:
1242 val = proxy->vqs[vdev->queue_sel].used[1];
1243 break;
1244 default:
1245 val = 0;
1246 }
1247
1248 return val;
1249}
1250
1251static void virtio_pci_common_write(void *opaque, hwaddr addr,
1252 uint64_t val, unsigned size)
1253{
1254 VirtIOPCIProxy *proxy = opaque;
1255 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1256
1257 switch (addr) {
1258 case VIRTIO_PCI_COMMON_DFSELECT:
1259 proxy->dfselect = val;
1260 break;
1261 case VIRTIO_PCI_COMMON_GFSELECT:
1262 proxy->gfselect = val;
1263 break;
1264 case VIRTIO_PCI_COMMON_GF:
1265 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1266 proxy->guest_features[proxy->gfselect] = val;
1267 virtio_set_features(vdev,
1268 (((uint64_t)proxy->guest_features[1]) << 32) |
1269 proxy->guest_features[0]);
1270 }
1271 break;
1272 case VIRTIO_PCI_COMMON_MSIX:
1273 msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
1274
1275 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1276 val = VIRTIO_NO_VECTOR;
1277 }
1278 vdev->config_vector = val;
1279 break;
1280 case VIRTIO_PCI_COMMON_STATUS:
1281 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
1282 virtio_pci_stop_ioeventfd(proxy);
1283 }
1284
1285 virtio_set_status(vdev, val & 0xFF);
1286
1287 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
1288 virtio_pci_start_ioeventfd(proxy);
1289 }
1290
1291 if (vdev->status == 0) {
1292 virtio_pci_reset(DEVICE(proxy));
1293 }
1294
1295 break;
1296 case VIRTIO_PCI_COMMON_Q_SELECT:
1297 if (val < VIRTIO_QUEUE_MAX) {
1298 vdev->queue_sel = val;
1299 }
1300 break;
1301 case VIRTIO_PCI_COMMON_Q_SIZE:
1302 proxy->vqs[vdev->queue_sel].num = val;
1303 break;
1304 case VIRTIO_PCI_COMMON_Q_MSIX:
1305 msix_vector_unuse(&proxy->pci_dev,
1306 virtio_queue_vector(vdev, vdev->queue_sel));
1307
1308 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1309 val = VIRTIO_NO_VECTOR;
1310 }
1311 virtio_queue_set_vector(vdev, vdev->queue_sel, val);
1312 break;
1313 case VIRTIO_PCI_COMMON_Q_ENABLE:
1314 virtio_queue_set_num(vdev, vdev->queue_sel,
1315 proxy->vqs[vdev->queue_sel].num);
1316 virtio_queue_set_rings(vdev, vdev->queue_sel,
1317 ((uint64_t)proxy->vqs[vdev->queue_sel].desc[1]) << 32 |
1318 proxy->vqs[vdev->queue_sel].desc[0],
1319 ((uint64_t)proxy->vqs[vdev->queue_sel].avail[1]) << 32 |
1320 proxy->vqs[vdev->queue_sel].avail[0],
1321 ((uint64_t)proxy->vqs[vdev->queue_sel].used[1]) << 32 |
1322 proxy->vqs[vdev->queue_sel].used[0]);
1323 proxy->vqs[vdev->queue_sel].enabled = 1;
1324 break;
1325 case VIRTIO_PCI_COMMON_Q_DESCLO:
1326 proxy->vqs[vdev->queue_sel].desc[0] = val;
1327 break;
1328 case VIRTIO_PCI_COMMON_Q_DESCHI:
1329 proxy->vqs[vdev->queue_sel].desc[1] = val;
1330 break;
1331 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1332 proxy->vqs[vdev->queue_sel].avail[0] = val;
1333 break;
1334 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1335 proxy->vqs[vdev->queue_sel].avail[1] = val;
1336 break;
1337 case VIRTIO_PCI_COMMON_Q_USEDLO:
1338 proxy->vqs[vdev->queue_sel].used[0] = val;
1339 break;
1340 case VIRTIO_PCI_COMMON_Q_USEDHI:
1341 proxy->vqs[vdev->queue_sel].used[1] = val;
1342 break;
1343 default:
1344 break;
1345 }
1346}
1347
1348
1349static uint64_t virtio_pci_notify_read(void *opaque, hwaddr addr,
1350 unsigned size)
1351{
1352 return 0;
1353}
1354
1355static void virtio_pci_notify_write(void *opaque, hwaddr addr,
1356 uint64_t val, unsigned size)
1357{
1358 VirtIODevice *vdev = opaque;
1359 VirtIOPCIProxy *proxy = VIRTIO_PCI(DEVICE(vdev)->parent_bus->parent);
1360 unsigned queue = addr / virtio_pci_queue_mem_mult(proxy);
1361
1362 if (queue < VIRTIO_QUEUE_MAX) {
1363 virtio_queue_notify(vdev, queue);
1364 }
1365}
1366
1367static void virtio_pci_notify_write_pio(void *opaque, hwaddr addr,
1368 uint64_t val, unsigned size)
1369{
1370 VirtIODevice *vdev = opaque;
1371 unsigned queue = val;
1372
1373 if (queue < VIRTIO_QUEUE_MAX) {
1374 virtio_queue_notify(vdev, queue);
1375 }
1376}
1377
1378static uint64_t virtio_pci_isr_read(void *opaque, hwaddr addr,
1379 unsigned size)
1380{
1381 VirtIOPCIProxy *proxy = opaque;
1382 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1383 uint64_t val = atomic_xchg(&vdev->isr, 0);
1384 pci_irq_deassert(&proxy->pci_dev);
1385
1386 return val;
1387}
1388
1389static void virtio_pci_isr_write(void *opaque, hwaddr addr,
1390 uint64_t val, unsigned size)
1391{
1392}
1393
1394static uint64_t virtio_pci_device_read(void *opaque, hwaddr addr,
1395 unsigned size)
1396{
1397 VirtIODevice *vdev = opaque;
1398 uint64_t val = 0;
1399
1400 switch (size) {
1401 case 1:
1402 val = virtio_config_modern_readb(vdev, addr);
1403 break;
1404 case 2:
1405 val = virtio_config_modern_readw(vdev, addr);
1406 break;
1407 case 4:
1408 val = virtio_config_modern_readl(vdev, addr);
1409 break;
1410 }
1411 return val;
1412}
1413
1414static void virtio_pci_device_write(void *opaque, hwaddr addr,
1415 uint64_t val, unsigned size)
1416{
1417 VirtIODevice *vdev = opaque;
1418 switch (size) {
1419 case 1:
1420 virtio_config_modern_writeb(vdev, addr, val);
1421 break;
1422 case 2:
1423 virtio_config_modern_writew(vdev, addr, val);
1424 break;
1425 case 4:
1426 virtio_config_modern_writel(vdev, addr, val);
1427 break;
1428 }
1429}
1430
1431static void virtio_pci_modern_regions_init(VirtIOPCIProxy *proxy)
1432{
1433 static const MemoryRegionOps common_ops = {
1434 .read = virtio_pci_common_read,
1435 .write = virtio_pci_common_write,
1436 .impl = {
1437 .min_access_size = 1,
1438 .max_access_size = 4,
1439 },
1440 .endianness = DEVICE_LITTLE_ENDIAN,
1441 };
1442 static const MemoryRegionOps isr_ops = {
1443 .read = virtio_pci_isr_read,
1444 .write = virtio_pci_isr_write,
1445 .impl = {
1446 .min_access_size = 1,
1447 .max_access_size = 4,
1448 },
1449 .endianness = DEVICE_LITTLE_ENDIAN,
1450 };
1451 static const MemoryRegionOps device_ops = {
1452 .read = virtio_pci_device_read,
1453 .write = virtio_pci_device_write,
1454 .impl = {
1455 .min_access_size = 1,
1456 .max_access_size = 4,
1457 },
1458 .endianness = DEVICE_LITTLE_ENDIAN,
1459 };
1460 static const MemoryRegionOps notify_ops = {
1461 .read = virtio_pci_notify_read,
1462 .write = virtio_pci_notify_write,
1463 .impl = {
1464 .min_access_size = 1,
1465 .max_access_size = 4,
1466 },
1467 .endianness = DEVICE_LITTLE_ENDIAN,
1468 };
1469 static const MemoryRegionOps notify_pio_ops = {
1470 .read = virtio_pci_notify_read,
1471 .write = virtio_pci_notify_write_pio,
1472 .impl = {
1473 .min_access_size = 1,
1474 .max_access_size = 4,
1475 },
1476 .endianness = DEVICE_LITTLE_ENDIAN,
1477 };
1478
1479
1480 memory_region_init_io(&proxy->common.mr, OBJECT(proxy),
1481 &common_ops,
1482 proxy,
1483 "virtio-pci-common",
1484 proxy->common.size);
1485
1486 memory_region_init_io(&proxy->isr.mr, OBJECT(proxy),
1487 &isr_ops,
1488 proxy,
1489 "virtio-pci-isr",
1490 proxy->isr.size);
1491
1492 memory_region_init_io(&proxy->device.mr, OBJECT(proxy),
1493 &device_ops,
1494 virtio_bus_get_device(&proxy->bus),
1495 "virtio-pci-device",
1496 proxy->device.size);
1497
1498 memory_region_init_io(&proxy->notify.mr, OBJECT(proxy),
1499 ¬ify_ops,
1500 virtio_bus_get_device(&proxy->bus),
1501 "virtio-pci-notify",
1502 proxy->notify.size);
1503
1504 memory_region_init_io(&proxy->notify_pio.mr, OBJECT(proxy),
1505 ¬ify_pio_ops,
1506 virtio_bus_get_device(&proxy->bus),
1507 "virtio-pci-notify-pio",
1508 proxy->notify_pio.size);
1509}
1510
1511static void virtio_pci_modern_region_map(VirtIOPCIProxy *proxy,
1512 VirtIOPCIRegion *region,
1513 struct virtio_pci_cap *cap,
1514 MemoryRegion *mr,
1515 uint8_t bar)
1516{
1517 memory_region_add_subregion(mr, region->offset, ®ion->mr);
1518
1519 cap->cfg_type = region->type;
1520 cap->bar = bar;
1521 cap->offset = cpu_to_le32(region->offset);
1522 cap->length = cpu_to_le32(region->size);
1523 virtio_pci_add_mem_cap(proxy, cap);
1524
1525}
1526
1527static void virtio_pci_modern_mem_region_map(VirtIOPCIProxy *proxy,
1528 VirtIOPCIRegion *region,
1529 struct virtio_pci_cap *cap)
1530{
1531 virtio_pci_modern_region_map(proxy, region, cap,
1532 &proxy->modern_bar, proxy->modern_mem_bar_idx);
1533}
1534
1535static void virtio_pci_modern_io_region_map(VirtIOPCIProxy *proxy,
1536 VirtIOPCIRegion *region,
1537 struct virtio_pci_cap *cap)
1538{
1539 virtio_pci_modern_region_map(proxy, region, cap,
1540 &proxy->io_bar, proxy->modern_io_bar_idx);
1541}
1542
1543static void virtio_pci_modern_mem_region_unmap(VirtIOPCIProxy *proxy,
1544 VirtIOPCIRegion *region)
1545{
1546 memory_region_del_subregion(&proxy->modern_bar,
1547 ®ion->mr);
1548}
1549
1550static void virtio_pci_modern_io_region_unmap(VirtIOPCIProxy *proxy,
1551 VirtIOPCIRegion *region)
1552{
1553 memory_region_del_subregion(&proxy->io_bar,
1554 ®ion->mr);
1555}
1556
1557static void virtio_pci_pre_plugged(DeviceState *d, Error **errp)
1558{
1559 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1560 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1561
1562 if (virtio_pci_modern(proxy)) {
1563 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1564 }
1565
1566 virtio_add_feature(&vdev->host_features, VIRTIO_F_BAD_FEATURE);
1567}
1568
1569
1570static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
1571{
1572 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1573 VirtioBusState *bus = &proxy->bus;
1574 bool legacy = virtio_pci_legacy(proxy);
1575 bool modern;
1576 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1577 uint8_t *config;
1578 uint32_t size;
1579 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1580
1581
1582
1583
1584
1585 if (!proxy->ignore_backend_features &&
1586 !virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
1587 virtio_pci_disable_modern(proxy);
1588
1589 if (!legacy) {
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");
1593
1594 return;
1595 }
1596 }
1597
1598 modern = virtio_pci_modern(proxy);
1599
1600 config = proxy->pci_dev.config;
1601 if (proxy->class_code) {
1602 pci_config_set_class(config, proxy->class_code);
1603 }
1604
1605 if (legacy) {
1606 if (virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM)) {
1607 error_setg(errp, "VIRTIO_F_IOMMU_PLATFORM was supported by"
1608 " neither legacy nor transitional device");
1609 return ;
1610 }
1611
1612
1613
1614
1615
1616 pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus));
1617 } else {
1618
1619 pci_set_word(config + PCI_VENDOR_ID,
1620 PCI_VENDOR_ID_REDHAT_QUMRANET);
1621 pci_set_word(config + PCI_DEVICE_ID,
1622 0x1040 + virtio_bus_get_vdev_id(bus));
1623 pci_config_set_revision(config, 1);
1624 }
1625 config[PCI_INTERRUPT_PIN] = 1;
1626
1627
1628 if (modern) {
1629 struct virtio_pci_cap cap = {
1630 .cap_len = sizeof cap,
1631 };
1632 struct virtio_pci_notify_cap notify = {
1633 .cap.cap_len = sizeof notify,
1634 .notify_off_multiplier =
1635 cpu_to_le32(virtio_pci_queue_mem_mult(proxy)),
1636 };
1637 struct virtio_pci_cfg_cap cfg = {
1638 .cap.cap_len = sizeof cfg,
1639 .cap.cfg_type = VIRTIO_PCI_CAP_PCI_CFG,
1640 };
1641 struct virtio_pci_notify_cap notify_pio = {
1642 .cap.cap_len = sizeof notify,
1643 .notify_off_multiplier = cpu_to_le32(0x0),
1644 };
1645
1646 struct virtio_pci_cfg_cap *cfg_mask;
1647
1648 virtio_pci_modern_regions_init(proxy);
1649
1650 virtio_pci_modern_mem_region_map(proxy, &proxy->common, &cap);
1651 virtio_pci_modern_mem_region_map(proxy, &proxy->isr, &cap);
1652 virtio_pci_modern_mem_region_map(proxy, &proxy->device, &cap);
1653 virtio_pci_modern_mem_region_map(proxy, &proxy->notify, ¬ify.cap);
1654
1655 if (modern_pio) {
1656 memory_region_init(&proxy->io_bar, OBJECT(proxy),
1657 "virtio-pci-io", 0x4);
1658
1659 pci_register_bar(&proxy->pci_dev, proxy->modern_io_bar_idx,
1660 PCI_BASE_ADDRESS_SPACE_IO, &proxy->io_bar);
1661
1662 virtio_pci_modern_io_region_map(proxy, &proxy->notify_pio,
1663 ¬ify_pio.cap);
1664 }
1665
1666 pci_register_bar(&proxy->pci_dev, proxy->modern_mem_bar_idx,
1667 PCI_BASE_ADDRESS_SPACE_MEMORY |
1668 PCI_BASE_ADDRESS_MEM_PREFETCH |
1669 PCI_BASE_ADDRESS_MEM_TYPE_64,
1670 &proxy->modern_bar);
1671
1672 proxy->config_cap = virtio_pci_add_mem_cap(proxy, &cfg.cap);
1673 cfg_mask = (void *)(proxy->pci_dev.wmask + proxy->config_cap);
1674 pci_set_byte(&cfg_mask->cap.bar, ~0x0);
1675 pci_set_long((uint8_t *)&cfg_mask->cap.offset, ~0x0);
1676 pci_set_long((uint8_t *)&cfg_mask->cap.length, ~0x0);
1677 pci_set_long(cfg_mask->pci_cfg_data, ~0x0);
1678 }
1679
1680 if (proxy->nvectors) {
1681 int err = msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
1682 proxy->msix_bar_idx, NULL);
1683 if (err) {
1684
1685 if (err != -ENOTSUP) {
1686 warn_report("unable to init msix vectors to %" PRIu32,
1687 proxy->nvectors);
1688 }
1689 proxy->nvectors = 0;
1690 }
1691 }
1692
1693 proxy->pci_dev.config_write = virtio_write_config;
1694 proxy->pci_dev.config_read = virtio_read_config;
1695
1696 if (legacy) {
1697 size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev)
1698 + virtio_bus_get_vdev_config_len(bus);
1699 size = pow2ceil(size);
1700
1701 memory_region_init_io(&proxy->bar, OBJECT(proxy),
1702 &virtio_pci_config_ops,
1703 proxy, "virtio-pci", size);
1704
1705 pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar_idx,
1706 PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar);
1707 }
1708}
1709
1710static void virtio_pci_device_unplugged(DeviceState *d)
1711{
1712 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1713 bool modern = virtio_pci_modern(proxy);
1714 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1715
1716 virtio_pci_stop_ioeventfd(proxy);
1717
1718 if (modern) {
1719 virtio_pci_modern_mem_region_unmap(proxy, &proxy->common);
1720 virtio_pci_modern_mem_region_unmap(proxy, &proxy->isr);
1721 virtio_pci_modern_mem_region_unmap(proxy, &proxy->device);
1722 virtio_pci_modern_mem_region_unmap(proxy, &proxy->notify);
1723 if (modern_pio) {
1724 virtio_pci_modern_io_region_unmap(proxy, &proxy->notify_pio);
1725 }
1726 }
1727}
1728
1729static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
1730{
1731 VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
1732 VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev);
1733 bool pcie_port = pci_bus_is_express(pci_get_bus(pci_dev)) &&
1734 !pci_bus_is_root(pci_get_bus(pci_dev));
1735
1736 if (kvm_enabled() && !kvm_has_many_ioeventfds()) {
1737 proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
1738 }
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749 proxy->legacy_io_bar_idx = 0;
1750 proxy->msix_bar_idx = 1;
1751 proxy->modern_io_bar_idx = 2;
1752 proxy->modern_mem_bar_idx = 4;
1753
1754 proxy->common.offset = 0x0;
1755 proxy->common.size = 0x1000;
1756 proxy->common.type = VIRTIO_PCI_CAP_COMMON_CFG;
1757
1758 proxy->isr.offset = 0x1000;
1759 proxy->isr.size = 0x1000;
1760 proxy->isr.type = VIRTIO_PCI_CAP_ISR_CFG;
1761
1762 proxy->device.offset = 0x2000;
1763 proxy->device.size = 0x1000;
1764 proxy->device.type = VIRTIO_PCI_CAP_DEVICE_CFG;
1765
1766 proxy->notify.offset = 0x3000;
1767 proxy->notify.size = virtio_pci_queue_mem_mult(proxy) * VIRTIO_QUEUE_MAX;
1768 proxy->notify.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1769
1770 proxy->notify_pio.offset = 0x0;
1771 proxy->notify_pio.size = 0x4;
1772 proxy->notify_pio.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1773
1774
1775 memory_region_init(&proxy->modern_bar, OBJECT(proxy), "virtio-pci",
1776
1777 pow2ceil(proxy->notify.offset + proxy->notify.size));
1778
1779 if (proxy->disable_legacy == ON_OFF_AUTO_AUTO) {
1780 proxy->disable_legacy = pcie_port ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
1781 }
1782
1783 if (!virtio_pci_modern(proxy) && !virtio_pci_legacy(proxy)) {
1784 error_setg(errp, "device cannot work as neither modern nor legacy mode"
1785 " is enabled");
1786 error_append_hint(errp, "Set either disable-modern or disable-legacy"
1787 " to off\n");
1788 return;
1789 }
1790
1791 if (pcie_port && pci_is_express(pci_dev)) {
1792 int pos;
1793
1794 pos = pcie_endpoint_cap_init(pci_dev, 0);
1795 assert(pos > 0);
1796
1797 pos = pci_add_capability(pci_dev, PCI_CAP_ID_PM, 0,
1798 PCI_PM_SIZEOF, errp);
1799 if (pos < 0) {
1800 return;
1801 }
1802
1803 pci_dev->exp.pm_cap = pos;
1804
1805
1806
1807
1808
1809 pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
1810
1811 if (proxy->flags & VIRTIO_PCI_FLAG_INIT_DEVERR) {
1812
1813 pcie_cap_deverr_init(pci_dev);
1814 }
1815
1816 if (proxy->flags & VIRTIO_PCI_FLAG_INIT_LNKCTL) {
1817
1818 pcie_cap_lnkctl_init(pci_dev);
1819 }
1820
1821 if (proxy->flags & VIRTIO_PCI_FLAG_INIT_PM) {
1822
1823 pci_set_word(pci_dev->wmask + pos + PCI_PM_CTRL,
1824 PCI_PM_CTRL_STATE_MASK);
1825 }
1826
1827 if (proxy->flags & VIRTIO_PCI_FLAG_ATS) {
1828 pcie_ats_init(pci_dev, 256);
1829 }
1830
1831 } else {
1832
1833
1834
1835
1836 pci_dev->cap_present &= ~QEMU_PCI_CAP_EXPRESS;
1837 }
1838
1839 virtio_pci_bus_new(&proxy->bus, sizeof(proxy->bus), proxy);
1840 if (k->realize) {
1841 k->realize(proxy, errp);
1842 }
1843}
1844
1845static void virtio_pci_exit(PCIDevice *pci_dev)
1846{
1847 msix_uninit_exclusive_bar(pci_dev);
1848}
1849
1850static void virtio_pci_reset(DeviceState *qdev)
1851{
1852 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1853 VirtioBusState *bus = VIRTIO_BUS(&proxy->bus);
1854 PCIDevice *dev = PCI_DEVICE(qdev);
1855 int i;
1856
1857 virtio_pci_stop_ioeventfd(proxy);
1858 virtio_bus_reset(bus);
1859 msix_unuse_all_vectors(&proxy->pci_dev);
1860
1861 for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
1862 proxy->vqs[i].enabled = 0;
1863 proxy->vqs[i].num = 0;
1864 proxy->vqs[i].desc[0] = proxy->vqs[i].desc[1] = 0;
1865 proxy->vqs[i].avail[0] = proxy->vqs[i].avail[1] = 0;
1866 proxy->vqs[i].used[0] = proxy->vqs[i].used[1] = 0;
1867 }
1868
1869 if (pci_is_express(dev)) {
1870 pcie_cap_deverr_reset(dev);
1871 pcie_cap_lnkctl_reset(dev);
1872
1873 pci_set_word(dev->config + dev->exp.pm_cap + PCI_PM_CTRL, 0);
1874 }
1875}
1876
1877static Property virtio_pci_properties[] = {
1878 DEFINE_PROP_BIT("virtio-pci-bus-master-bug-migration", VirtIOPCIProxy, flags,
1879 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT, false),
1880 DEFINE_PROP_ON_OFF_AUTO("disable-legacy", VirtIOPCIProxy, disable_legacy,
1881 ON_OFF_AUTO_AUTO),
1882 DEFINE_PROP_BOOL("disable-modern", VirtIOPCIProxy, disable_modern, false),
1883 DEFINE_PROP_BIT("migrate-extra", VirtIOPCIProxy, flags,
1884 VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, true),
1885 DEFINE_PROP_BIT("modern-pio-notify", VirtIOPCIProxy, flags,
1886 VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, false),
1887 DEFINE_PROP_BIT("x-disable-pcie", VirtIOPCIProxy, flags,
1888 VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, false),
1889 DEFINE_PROP_BIT("page-per-vq", VirtIOPCIProxy, flags,
1890 VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT, false),
1891 DEFINE_PROP_BOOL("x-ignore-backend-features", VirtIOPCIProxy,
1892 ignore_backend_features, false),
1893 DEFINE_PROP_BIT("ats", VirtIOPCIProxy, flags,
1894 VIRTIO_PCI_FLAG_ATS_BIT, false),
1895 DEFINE_PROP_BIT("x-pcie-deverr-init", VirtIOPCIProxy, flags,
1896 VIRTIO_PCI_FLAG_INIT_DEVERR_BIT, true),
1897 DEFINE_PROP_BIT("x-pcie-lnkctl-init", VirtIOPCIProxy, flags,
1898 VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT, true),
1899 DEFINE_PROP_BIT("x-pcie-pm-init", VirtIOPCIProxy, flags,
1900 VIRTIO_PCI_FLAG_INIT_PM_BIT, true),
1901 DEFINE_PROP_END_OF_LIST(),
1902};
1903
1904static void virtio_pci_dc_realize(DeviceState *qdev, Error **errp)
1905{
1906 VirtioPCIClass *vpciklass = VIRTIO_PCI_GET_CLASS(qdev);
1907 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1908 PCIDevice *pci_dev = &proxy->pci_dev;
1909
1910 if (!(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_PCIE) &&
1911 virtio_pci_modern(proxy)) {
1912 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
1913 }
1914
1915 vpciklass->parent_dc_realize(qdev, errp);
1916}
1917
1918static void virtio_pci_class_init(ObjectClass *klass, void *data)
1919{
1920 DeviceClass *dc = DEVICE_CLASS(klass);
1921 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1922 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
1923
1924 dc->props = virtio_pci_properties;
1925 k->realize = virtio_pci_realize;
1926 k->exit = virtio_pci_exit;
1927 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1928 k->revision = VIRTIO_PCI_ABI_VERSION;
1929 k->class_id = PCI_CLASS_OTHERS;
1930 device_class_set_parent_realize(dc, virtio_pci_dc_realize,
1931 &vpciklass->parent_dc_realize);
1932 dc->reset = virtio_pci_reset;
1933}
1934
1935static const TypeInfo virtio_pci_info = {
1936 .name = TYPE_VIRTIO_PCI,
1937 .parent = TYPE_PCI_DEVICE,
1938 .instance_size = sizeof(VirtIOPCIProxy),
1939 .class_init = virtio_pci_class_init,
1940 .class_size = sizeof(VirtioPCIClass),
1941 .abstract = true,
1942 .interfaces = (InterfaceInfo[]) {
1943 { INTERFACE_PCIE_DEVICE },
1944 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
1945 { }
1946 },
1947};
1948
1949
1950
1951static Property virtio_blk_pci_properties[] = {
1952 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
1953 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1954 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1955 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
1956 DEV_NVECTORS_UNSPECIFIED),
1957 DEFINE_PROP_END_OF_LIST(),
1958};
1959
1960static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1961{
1962 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
1963 DeviceState *vdev = DEVICE(&dev->vdev);
1964
1965 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
1966 vpci_dev->nvectors = dev->vdev.conf.num_queues + 1;
1967 }
1968
1969 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1970 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1971}
1972
1973static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
1974{
1975 DeviceClass *dc = DEVICE_CLASS(klass);
1976 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1977 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1978
1979 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1980 dc->props = virtio_blk_pci_properties;
1981 k->realize = virtio_blk_pci_realize;
1982 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1983 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
1984 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
1985 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
1986}
1987
1988static void virtio_blk_pci_instance_init(Object *obj)
1989{
1990 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
1991
1992 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1993 TYPE_VIRTIO_BLK);
1994 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
1995 "bootindex", &error_abort);
1996}
1997
1998static const TypeInfo virtio_blk_pci_info = {
1999 .name = TYPE_VIRTIO_BLK_PCI,
2000 .parent = TYPE_VIRTIO_PCI,
2001 .instance_size = sizeof(VirtIOBlkPCI),
2002 .instance_init = virtio_blk_pci_instance_init,
2003 .class_init = virtio_blk_pci_class_init,
2004};
2005
2006#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2007
2008
2009static Property vhost_user_blk_pci_properties[] = {
2010 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2011 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
2012 DEV_NVECTORS_UNSPECIFIED),
2013 DEFINE_PROP_END_OF_LIST(),
2014};
2015
2016static void vhost_user_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2017{
2018 VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(vpci_dev);
2019 DeviceState *vdev = DEVICE(&dev->vdev);
2020
2021 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2022 vpci_dev->nvectors = dev->vdev.num_queues + 1;
2023 }
2024
2025 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2026 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2027}
2028
2029static void vhost_user_blk_pci_class_init(ObjectClass *klass, void *data)
2030{
2031 DeviceClass *dc = DEVICE_CLASS(klass);
2032 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2033 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2034
2035 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2036 dc->props = vhost_user_blk_pci_properties;
2037 k->realize = vhost_user_blk_pci_realize;
2038 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2039 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
2040 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2041 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2042}
2043
2044static void vhost_user_blk_pci_instance_init(Object *obj)
2045{
2046 VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(obj);
2047
2048 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2049 TYPE_VHOST_USER_BLK);
2050 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2051 "bootindex", &error_abort);
2052}
2053
2054static const TypeInfo vhost_user_blk_pci_info = {
2055 .name = TYPE_VHOST_USER_BLK_PCI,
2056 .parent = TYPE_VIRTIO_PCI,
2057 .instance_size = sizeof(VHostUserBlkPCI),
2058 .instance_init = vhost_user_blk_pci_instance_init,
2059 .class_init = vhost_user_blk_pci_class_init,
2060};
2061#endif
2062
2063
2064
2065static Property virtio_scsi_pci_properties[] = {
2066 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2067 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
2068 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
2069 DEV_NVECTORS_UNSPECIFIED),
2070 DEFINE_PROP_END_OF_LIST(),
2071};
2072
2073static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2074{
2075 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev);
2076 DeviceState *vdev = DEVICE(&dev->vdev);
2077 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
2078 DeviceState *proxy = DEVICE(vpci_dev);
2079 char *bus_name;
2080
2081 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2082 vpci_dev->nvectors = vs->conf.num_queues + 3;
2083 }
2084
2085
2086
2087
2088
2089 if (proxy->id) {
2090 bus_name = g_strdup_printf("%s.0", proxy->id);
2091 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
2092 g_free(bus_name);
2093 }
2094
2095 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2096 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2097}
2098
2099static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
2100{
2101 DeviceClass *dc = DEVICE_CLASS(klass);
2102 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2103 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2104
2105 k->realize = virtio_scsi_pci_realize;
2106 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2107 dc->props = virtio_scsi_pci_properties;
2108 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2109 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2110 pcidev_k->revision = 0x00;
2111 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2112}
2113
2114static void virtio_scsi_pci_instance_init(Object *obj)
2115{
2116 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj);
2117
2118 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2119 TYPE_VIRTIO_SCSI);
2120}
2121
2122static const TypeInfo virtio_scsi_pci_info = {
2123 .name = TYPE_VIRTIO_SCSI_PCI,
2124 .parent = TYPE_VIRTIO_PCI,
2125 .instance_size = sizeof(VirtIOSCSIPCI),
2126 .instance_init = virtio_scsi_pci_instance_init,
2127 .class_init = virtio_scsi_pci_class_init,
2128};
2129
2130
2131
2132#ifdef CONFIG_VHOST_SCSI
2133static Property vhost_scsi_pci_properties[] = {
2134 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
2135 DEV_NVECTORS_UNSPECIFIED),
2136 DEFINE_PROP_END_OF_LIST(),
2137};
2138
2139static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2140{
2141 VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev);
2142 DeviceState *vdev = DEVICE(&dev->vdev);
2143 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
2144
2145 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2146 vpci_dev->nvectors = vs->conf.num_queues + 3;
2147 }
2148
2149 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2150 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2151}
2152
2153static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data)
2154{
2155 DeviceClass *dc = DEVICE_CLASS(klass);
2156 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2157 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2158 k->realize = vhost_scsi_pci_realize;
2159 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2160 dc->props = vhost_scsi_pci_properties;
2161 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2162 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2163 pcidev_k->revision = 0x00;
2164 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2165}
2166
2167static void vhost_scsi_pci_instance_init(Object *obj)
2168{
2169 VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj);
2170
2171 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2172 TYPE_VHOST_SCSI);
2173 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2174 "bootindex", &error_abort);
2175}
2176
2177static const TypeInfo vhost_scsi_pci_info = {
2178 .name = TYPE_VHOST_SCSI_PCI,
2179 .parent = TYPE_VIRTIO_PCI,
2180 .instance_size = sizeof(VHostSCSIPCI),
2181 .instance_init = vhost_scsi_pci_instance_init,
2182 .class_init = vhost_scsi_pci_class_init,
2183};
2184#endif
2185
2186#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2187
2188static Property vhost_user_scsi_pci_properties[] = {
2189 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
2190 DEV_NVECTORS_UNSPECIFIED),
2191 DEFINE_PROP_END_OF_LIST(),
2192};
2193
2194static void vhost_user_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2195{
2196 VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(vpci_dev);
2197 DeviceState *vdev = DEVICE(&dev->vdev);
2198 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
2199
2200 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2201 vpci_dev->nvectors = vs->conf.num_queues + 3;
2202 }
2203
2204 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2205 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2206}
2207
2208static void vhost_user_scsi_pci_class_init(ObjectClass *klass, void *data)
2209{
2210 DeviceClass *dc = DEVICE_CLASS(klass);
2211 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2212 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2213 k->realize = vhost_user_scsi_pci_realize;
2214 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2215 dc->props = vhost_user_scsi_pci_properties;
2216 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2217 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2218 pcidev_k->revision = 0x00;
2219 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2220}
2221
2222static void vhost_user_scsi_pci_instance_init(Object *obj)
2223{
2224 VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(obj);
2225
2226 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2227 TYPE_VHOST_USER_SCSI);
2228 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2229 "bootindex", &error_abort);
2230}
2231
2232static const TypeInfo vhost_user_scsi_pci_info = {
2233 .name = TYPE_VHOST_USER_SCSI_PCI,
2234 .parent = TYPE_VIRTIO_PCI,
2235 .instance_size = sizeof(VHostUserSCSIPCI),
2236 .instance_init = vhost_user_scsi_pci_instance_init,
2237 .class_init = vhost_user_scsi_pci_class_init,
2238};
2239#endif
2240
2241
2242
2243#ifdef CONFIG_VHOST_VSOCK
2244static Property vhost_vsock_pci_properties[] = {
2245 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
2246 DEFINE_PROP_END_OF_LIST(),
2247};
2248
2249static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2250{
2251 VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev);
2252 DeviceState *vdev = DEVICE(&dev->vdev);
2253
2254 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2255 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2256}
2257
2258static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
2259{
2260 DeviceClass *dc = DEVICE_CLASS(klass);
2261 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2262 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2263 k->realize = vhost_vsock_pci_realize;
2264 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2265 dc->props = vhost_vsock_pci_properties;
2266 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2267 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
2268 pcidev_k->revision = 0x00;
2269 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
2270}
2271
2272static void vhost_vsock_pci_instance_init(Object *obj)
2273{
2274 VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
2275
2276 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2277 TYPE_VHOST_VSOCK);
2278}
2279
2280static const TypeInfo vhost_vsock_pci_info = {
2281 .name = TYPE_VHOST_VSOCK_PCI,
2282 .parent = TYPE_VIRTIO_PCI,
2283 .instance_size = sizeof(VHostVSockPCI),
2284 .instance_init = vhost_vsock_pci_instance_init,
2285 .class_init = vhost_vsock_pci_class_init,
2286};
2287#endif
2288
2289
2290
2291static Property virtio_balloon_pci_properties[] = {
2292 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2293 DEFINE_PROP_END_OF_LIST(),
2294};
2295
2296static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2297{
2298 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
2299 DeviceState *vdev = DEVICE(&dev->vdev);
2300
2301 if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
2302 vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) {
2303 vpci_dev->class_code = PCI_CLASS_OTHERS;
2304 }
2305
2306 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2307 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2308}
2309
2310static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
2311{
2312 DeviceClass *dc = DEVICE_CLASS(klass);
2313 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2314 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2315 k->realize = virtio_balloon_pci_realize;
2316 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2317 dc->props = virtio_balloon_pci_properties;
2318 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2319 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
2320 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2321 pcidev_k->class_id = PCI_CLASS_OTHERS;
2322}
2323
2324static void virtio_balloon_pci_instance_init(Object *obj)
2325{
2326 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
2327
2328 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2329 TYPE_VIRTIO_BALLOON);
2330 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
2331 "guest-stats", &error_abort);
2332 object_property_add_alias(obj, "guest-stats-polling-interval",
2333 OBJECT(&dev->vdev),
2334 "guest-stats-polling-interval", &error_abort);
2335}
2336
2337static const TypeInfo virtio_balloon_pci_info = {
2338 .name = TYPE_VIRTIO_BALLOON_PCI,
2339 .parent = TYPE_VIRTIO_PCI,
2340 .instance_size = sizeof(VirtIOBalloonPCI),
2341 .instance_init = virtio_balloon_pci_instance_init,
2342 .class_init = virtio_balloon_pci_class_init,
2343};
2344
2345
2346
2347static void virtio_serial_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2348{
2349 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev);
2350 DeviceState *vdev = DEVICE(&dev->vdev);
2351 DeviceState *proxy = DEVICE(vpci_dev);
2352 char *bus_name;
2353
2354 if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
2355 vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER &&
2356 vpci_dev->class_code != PCI_CLASS_OTHERS) {
2357 vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER;
2358 }
2359
2360
2361
2362 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2363 vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1;
2364 }
2365
2366
2367
2368
2369
2370 if (proxy->id) {
2371 bus_name = g_strdup_printf("%s.0", proxy->id);
2372 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
2373 g_free(bus_name);
2374 }
2375
2376 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2377 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2378}
2379
2380static Property virtio_serial_pci_properties[] = {
2381 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2382 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
2383 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2384 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2385 DEFINE_PROP_END_OF_LIST(),
2386};
2387
2388static void virtio_serial_pci_class_init(ObjectClass *klass, void *data)
2389{
2390 DeviceClass *dc = DEVICE_CLASS(klass);
2391 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2392 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2393 k->realize = virtio_serial_pci_realize;
2394 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2395 dc->props = virtio_serial_pci_properties;
2396 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2397 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE;
2398 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2399 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
2400}
2401
2402static void virtio_serial_pci_instance_init(Object *obj)
2403{
2404 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj);
2405
2406 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2407 TYPE_VIRTIO_SERIAL);
2408}
2409
2410static const TypeInfo virtio_serial_pci_info = {
2411 .name = TYPE_VIRTIO_SERIAL_PCI,
2412 .parent = TYPE_VIRTIO_PCI,
2413 .instance_size = sizeof(VirtIOSerialPCI),
2414 .instance_init = virtio_serial_pci_instance_init,
2415 .class_init = virtio_serial_pci_class_init,
2416};
2417
2418
2419
2420static Property virtio_net_properties[] = {
2421 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2422 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
2423 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
2424 DEFINE_PROP_END_OF_LIST(),
2425};
2426
2427static void virtio_net_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2428{
2429 DeviceState *qdev = DEVICE(vpci_dev);
2430 VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev);
2431 DeviceState *vdev = DEVICE(&dev->vdev);
2432
2433 virtio_net_set_netclient_name(&dev->vdev, qdev->id,
2434 object_get_typename(OBJECT(qdev)));
2435 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2436 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2437}
2438
2439static void virtio_net_pci_class_init(ObjectClass *klass, void *data)
2440{
2441 DeviceClass *dc = DEVICE_CLASS(klass);
2442 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2443 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
2444
2445 k->romfile = "efi-virtio.rom";
2446 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2447 k->device_id = PCI_DEVICE_ID_VIRTIO_NET;
2448 k->revision = VIRTIO_PCI_ABI_VERSION;
2449 k->class_id = PCI_CLASS_NETWORK_ETHERNET;
2450 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2451 dc->props = virtio_net_properties;
2452 vpciklass->realize = virtio_net_pci_realize;
2453}
2454
2455static void virtio_net_pci_instance_init(Object *obj)
2456{
2457 VirtIONetPCI *dev = VIRTIO_NET_PCI(obj);
2458
2459 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2460 TYPE_VIRTIO_NET);
2461 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2462 "bootindex", &error_abort);
2463}
2464
2465static const TypeInfo virtio_net_pci_info = {
2466 .name = TYPE_VIRTIO_NET_PCI,
2467 .parent = TYPE_VIRTIO_PCI,
2468 .instance_size = sizeof(VirtIONetPCI),
2469 .instance_init = virtio_net_pci_instance_init,
2470 .class_init = virtio_net_pci_class_init,
2471};
2472
2473
2474
2475static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2476{
2477 VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
2478 DeviceState *vdev = DEVICE(&vrng->vdev);
2479 Error *err = NULL;
2480
2481 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2482 object_property_set_bool(OBJECT(vdev), true, "realized", &err);
2483 if (err) {
2484 error_propagate(errp, err);
2485 return;
2486 }
2487
2488 object_property_set_link(OBJECT(vrng),
2489 OBJECT(vrng->vdev.conf.rng), "rng",
2490 NULL);
2491}
2492
2493static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
2494{
2495 DeviceClass *dc = DEVICE_CLASS(klass);
2496 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2497 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2498
2499 k->realize = virtio_rng_pci_realize;
2500 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2501
2502 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2503 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
2504 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2505 pcidev_k->class_id = PCI_CLASS_OTHERS;
2506}
2507
2508static void virtio_rng_initfn(Object *obj)
2509{
2510 VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
2511
2512 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2513 TYPE_VIRTIO_RNG);
2514}
2515
2516static const TypeInfo virtio_rng_pci_info = {
2517 .name = TYPE_VIRTIO_RNG_PCI,
2518 .parent = TYPE_VIRTIO_PCI,
2519 .instance_size = sizeof(VirtIORngPCI),
2520 .instance_init = virtio_rng_initfn,
2521 .class_init = virtio_rng_pci_class_init,
2522};
2523
2524
2525
2526static Property virtio_input_pci_properties[] = {
2527 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2528 DEFINE_PROP_END_OF_LIST(),
2529};
2530
2531static void virtio_input_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2532{
2533 VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
2534 DeviceState *vdev = DEVICE(&vinput->vdev);
2535
2536 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2537 virtio_pci_force_virtio_1(vpci_dev);
2538 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2539}
2540
2541static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
2542{
2543 DeviceClass *dc = DEVICE_CLASS(klass);
2544 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2545 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2546
2547 dc->props = virtio_input_pci_properties;
2548 k->realize = virtio_input_pci_realize;
2549 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2550
2551 pcidev_k->class_id = PCI_CLASS_INPUT_OTHER;
2552}
2553
2554static void virtio_input_hid_kbd_pci_class_init(ObjectClass *klass, void *data)
2555{
2556 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2557
2558 pcidev_k->class_id = PCI_CLASS_INPUT_KEYBOARD;
2559}
2560
2561static void virtio_input_hid_mouse_pci_class_init(ObjectClass *klass,
2562 void *data)
2563{
2564 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2565
2566 pcidev_k->class_id = PCI_CLASS_INPUT_MOUSE;
2567}
2568
2569static void virtio_keyboard_initfn(Object *obj)
2570{
2571 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2572
2573 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2574 TYPE_VIRTIO_KEYBOARD);
2575}
2576
2577static void virtio_mouse_initfn(Object *obj)
2578{
2579 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2580
2581 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2582 TYPE_VIRTIO_MOUSE);
2583}
2584
2585static void virtio_tablet_initfn(Object *obj)
2586{
2587 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2588
2589 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2590 TYPE_VIRTIO_TABLET);
2591}
2592
2593static const TypeInfo virtio_input_pci_info = {
2594 .name = TYPE_VIRTIO_INPUT_PCI,
2595 .parent = TYPE_VIRTIO_PCI,
2596 .instance_size = sizeof(VirtIOInputPCI),
2597 .class_init = virtio_input_pci_class_init,
2598 .abstract = true,
2599};
2600
2601static const TypeInfo virtio_input_hid_pci_info = {
2602 .name = TYPE_VIRTIO_INPUT_HID_PCI,
2603 .parent = TYPE_VIRTIO_INPUT_PCI,
2604 .instance_size = sizeof(VirtIOInputHIDPCI),
2605 .abstract = true,
2606};
2607
2608static const TypeInfo virtio_keyboard_pci_info = {
2609 .name = TYPE_VIRTIO_KEYBOARD_PCI,
2610 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2611 .class_init = virtio_input_hid_kbd_pci_class_init,
2612 .instance_size = sizeof(VirtIOInputHIDPCI),
2613 .instance_init = virtio_keyboard_initfn,
2614};
2615
2616static const TypeInfo virtio_mouse_pci_info = {
2617 .name = TYPE_VIRTIO_MOUSE_PCI,
2618 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2619 .class_init = virtio_input_hid_mouse_pci_class_init,
2620 .instance_size = sizeof(VirtIOInputHIDPCI),
2621 .instance_init = virtio_mouse_initfn,
2622};
2623
2624static const TypeInfo virtio_tablet_pci_info = {
2625 .name = TYPE_VIRTIO_TABLET_PCI,
2626 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2627 .instance_size = sizeof(VirtIOInputHIDPCI),
2628 .instance_init = virtio_tablet_initfn,
2629};
2630
2631#ifdef CONFIG_LINUX
2632static void virtio_host_initfn(Object *obj)
2633{
2634 VirtIOInputHostPCI *dev = VIRTIO_INPUT_HOST_PCI(obj);
2635
2636 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2637 TYPE_VIRTIO_INPUT_HOST);
2638}
2639
2640static const TypeInfo virtio_host_pci_info = {
2641 .name = TYPE_VIRTIO_INPUT_HOST_PCI,
2642 .parent = TYPE_VIRTIO_INPUT_PCI,
2643 .instance_size = sizeof(VirtIOInputHostPCI),
2644 .instance_init = virtio_host_initfn,
2645};
2646#endif
2647
2648
2649
2650static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
2651 VirtIOPCIProxy *dev)
2652{
2653 DeviceState *qdev = DEVICE(dev);
2654 char virtio_bus_name[] = "virtio-bus";
2655
2656 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_PCI_BUS, qdev,
2657 virtio_bus_name);
2658}
2659
2660static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
2661{
2662 BusClass *bus_class = BUS_CLASS(klass);
2663 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
2664 bus_class->max_dev = 1;
2665 k->notify = virtio_pci_notify;
2666 k->save_config = virtio_pci_save_config;
2667 k->load_config = virtio_pci_load_config;
2668 k->save_queue = virtio_pci_save_queue;
2669 k->load_queue = virtio_pci_load_queue;
2670 k->save_extra_state = virtio_pci_save_extra_state;
2671 k->load_extra_state = virtio_pci_load_extra_state;
2672 k->has_extra_state = virtio_pci_has_extra_state;
2673 k->query_guest_notifiers = virtio_pci_query_guest_notifiers;
2674 k->set_guest_notifiers = virtio_pci_set_guest_notifiers;
2675 k->set_host_notifier_mr = virtio_pci_set_host_notifier_mr;
2676 k->vmstate_change = virtio_pci_vmstate_change;
2677 k->pre_plugged = virtio_pci_pre_plugged;
2678 k->device_plugged = virtio_pci_device_plugged;
2679 k->device_unplugged = virtio_pci_device_unplugged;
2680 k->query_nvectors = virtio_pci_query_nvectors;
2681 k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
2682 k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
2683 k->get_dma_as = virtio_pci_get_dma_as;
2684}
2685
2686static const TypeInfo virtio_pci_bus_info = {
2687 .name = TYPE_VIRTIO_PCI_BUS,
2688 .parent = TYPE_VIRTIO_BUS,
2689 .instance_size = sizeof(VirtioPCIBusState),
2690 .class_init = virtio_pci_bus_class_init,
2691};
2692
2693static void virtio_pci_register_types(void)
2694{
2695 type_register_static(&virtio_rng_pci_info);
2696 type_register_static(&virtio_input_pci_info);
2697 type_register_static(&virtio_input_hid_pci_info);
2698 type_register_static(&virtio_keyboard_pci_info);
2699 type_register_static(&virtio_mouse_pci_info);
2700 type_register_static(&virtio_tablet_pci_info);
2701#ifdef CONFIG_LINUX
2702 type_register_static(&virtio_host_pci_info);
2703#endif
2704 type_register_static(&virtio_pci_bus_info);
2705 type_register_static(&virtio_pci_info);
2706#ifdef CONFIG_VIRTFS
2707 type_register_static(&virtio_9p_pci_info);
2708#endif
2709 type_register_static(&virtio_blk_pci_info);
2710#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2711 type_register_static(&vhost_user_blk_pci_info);
2712#endif
2713 type_register_static(&virtio_scsi_pci_info);
2714 type_register_static(&virtio_balloon_pci_info);
2715 type_register_static(&virtio_serial_pci_info);
2716 type_register_static(&virtio_net_pci_info);
2717#ifdef CONFIG_VHOST_SCSI
2718 type_register_static(&vhost_scsi_pci_info);
2719#endif
2720#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2721 type_register_static(&vhost_user_scsi_pci_info);
2722#endif
2723#ifdef CONFIG_VHOST_VSOCK
2724 type_register_static(&vhost_vsock_pci_info);
2725#endif
2726}
2727
2728type_init(virtio_pci_register_types)
2729
