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virtio: move ioeventfd_started flag to VirtioBusState
[qemu/ar7.git] / hw / virtio / virtio-pci.c
blobf00fc2537c5714b04765ffb773cc8763a929dab3
1 /*
2 * Virtio PCI Bindings
3 *
4 * Copyright IBM, Corp. 2007
5 * Copyright (c) 2009 CodeSourcery
6 *
7 * Authors:
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Paul Brook <paul@codesourcery.com>
10 *
11 * This work is licensed under the terms of the GNU GPL, version 2. See
12 * the COPYING file in the top-level directory.
13 *
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.
16 */
17
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 "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"
40
41 #define VIRTIO_PCI_REGION_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_present(dev))
42
43 #undef VIRTIO_PCI_CONFIG
44
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))
48
49 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
50 VirtIOPCIProxy *dev);
51 static void virtio_pci_reset(DeviceState *qdev);
52
53 /* virtio device */
54 /* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */
55 static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d)
56 {
57 return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
58 }
59
60 /* DeviceState to VirtIOPCIProxy. Note: used on datapath,
61 * be careful and test performance if you change this.
62 */
63 static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d)
64 {
65 return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
66 }
67
68 static void virtio_pci_notify(DeviceState *d, uint16_t vector)
69 {
70 VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d);
71
72 if (msix_enabled(&proxy->pci_dev))
73 msix_notify(&proxy->pci_dev, vector);
74 else {
75 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
76 pci_set_irq(&proxy->pci_dev, vdev->isr & 1);
77 }
78 }
79
80 static void virtio_pci_save_config(DeviceState *d, QEMUFile *f)
81 {
82 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
83 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
84
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);
89 }
90
91 static void virtio_pci_load_modern_queue_state(VirtIOPCIQueue *vq,
92 QEMUFile *f)
93 {
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);
102 }
103
104 static bool virtio_pci_has_extra_state(DeviceState *d)
105 {
106 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
107
108 return proxy->flags & VIRTIO_PCI_FLAG_MIGRATE_EXTRA;
109 }
110
111 static int get_virtio_pci_modern_state(QEMUFile *f, void *pv, size_t size)
112 {
113 VirtIOPCIProxy *proxy = pv;
114 int i;
115
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);
122 }
123
124 return 0;
125 }
126
127 static void virtio_pci_save_modern_queue_state(VirtIOPCIQueue *vq,
128 QEMUFile *f)
129 {
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]);
138 }
139
140 static void put_virtio_pci_modern_state(QEMUFile *f, void *pv, size_t size)
141 {
142 VirtIOPCIProxy *proxy = pv;
143 int i;
144
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);
151 }
152 }
153
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,
158 };
159
160 static bool virtio_pci_modern_state_needed(void *opaque)
161 {
162 VirtIOPCIProxy *proxy = opaque;
163
164 return virtio_pci_modern(proxy);
165 }
166
167 static const VMStateDescription vmstate_virtio_pci_modern_state = {
168 .name = "virtio_pci/modern_state",
169 .version_id = 1,
170 .minimum_version_id = 1,
171 .needed = &virtio_pci_modern_state_needed,
172 .fields = (VMStateField[]) {
173 {
174 .name = "modern_state",
175 .version_id = 0,
176 .field_exists = NULL,
177 .size = 0,
178 .info = &vmstate_info_virtio_pci_modern_state,
179 .flags = VMS_SINGLE,
180 .offset = 0,
181 },
182 VMSTATE_END_OF_LIST()
183 }
184 };
185
186 static const VMStateDescription vmstate_virtio_pci = {
187 .name = "virtio_pci",
188 .version_id = 1,
189 .minimum_version_id = 1,
190 .minimum_version_id_old = 1,
191 .fields = (VMStateField[]) {
192 VMSTATE_END_OF_LIST()
193 },
194 .subsections = (const VMStateDescription*[]) {
195 &vmstate_virtio_pci_modern_state,
196 NULL
197 }
198 };
199
200 static void virtio_pci_save_extra_state(DeviceState *d, QEMUFile *f)
201 {
202 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
203
204 vmstate_save_state(f, &vmstate_virtio_pci, proxy, NULL);
205 }
206
207 static int virtio_pci_load_extra_state(DeviceState *d, QEMUFile *f)
208 {
209 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
210
211 return vmstate_load_state(f, &vmstate_virtio_pci, proxy, 1);
212 }
213
214 static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f)
215 {
216 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
217 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
218
219 if (msix_present(&proxy->pci_dev))
220 qemu_put_be16(f, virtio_queue_vector(vdev, n));
221 }
222
223 static int virtio_pci_load_config(DeviceState *d, QEMUFile *f)
224 {
225 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
226 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
227
228 int ret;
229 ret = pci_device_load(&proxy->pci_dev, f);
230 if (ret) {
231 return ret;
232 }
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);
237 } else {
238 vdev->config_vector = VIRTIO_NO_VECTOR;
239 }
240 if (vdev->config_vector != VIRTIO_NO_VECTOR) {
241 return msix_vector_use(&proxy->pci_dev, vdev->config_vector);
242 }
243 return 0;
244 }
245
246 static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f)
247 {
248 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
249 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
250
251 uint16_t vector;
252 if (msix_present(&proxy->pci_dev)) {
253 qemu_get_be16s(f, &vector);
254 } else {
255 vector = VIRTIO_NO_VECTOR;
256 }
257 virtio_queue_set_vector(vdev, n, vector);
258 if (vector != VIRTIO_NO_VECTOR) {
259 return msix_vector_use(&proxy->pci_dev, vector);
260 }
261
262 return 0;
263 }
264
265 static bool virtio_pci_ioeventfd_disabled(DeviceState *d)
266 {
267 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
268
269 return !(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD);
270 }
271
272 #define QEMU_VIRTIO_PCI_QUEUE_MEM_MULT 0x1000
273
274 static inline int virtio_pci_queue_mem_mult(struct VirtIOPCIProxy *proxy)
275 {
276 return (proxy->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ) ?
277 QEMU_VIRTIO_PCI_QUEUE_MEM_MULT : 4;
278 }
279
280 static int virtio_pci_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
281 int n, bool assign)
282 {
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;
296
297 if (assign) {
298 if (modern) {
299 if (fast_mmio) {
300 memory_region_add_eventfd(modern_mr, modern_addr, 0,
301 false, n, notifier);
302 } else {
303 memory_region_add_eventfd(modern_mr, modern_addr, 2,
304 false, n, notifier);
305 }
306 if (modern_pio) {
307 memory_region_add_eventfd(modern_notify_mr, 0, 2,
308 true, n, notifier);
309 }
310 }
311 if (legacy) {
312 memory_region_add_eventfd(legacy_mr, legacy_addr, 2,
313 true, n, notifier);
314 }
315 } else {
316 if (modern) {
317 if (fast_mmio) {
318 memory_region_del_eventfd(modern_mr, modern_addr, 0,
319 false, n, notifier);
320 } else {
321 memory_region_del_eventfd(modern_mr, modern_addr, 2,
322 false, n, notifier);
323 }
324 if (modern_pio) {
325 memory_region_del_eventfd(modern_notify_mr, 0, 2,
326 true, n, notifier);
327 }
328 }
329 if (legacy) {
330 memory_region_del_eventfd(legacy_mr, legacy_addr, 2,
331 true, n, notifier);
332 }
333 }
334 return 0;
335 }
336
337 static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy)
338 {
339 virtio_bus_start_ioeventfd(&proxy->bus);
340 }
341
342 static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy)
343 {
344 virtio_bus_stop_ioeventfd(&proxy->bus);
345 }
346
347 static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
348 {
349 VirtIOPCIProxy *proxy = opaque;
350 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
351 hwaddr pa;
352
353 switch (addr) {
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);
358 }
359 virtio_set_features(vdev, val);
360 break;
361 case VIRTIO_PCI_QUEUE_PFN:
362 pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
363 if (pa == 0) {
364 virtio_pci_reset(DEVICE(proxy));
365 }
366 else
367 virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
368 break;
369 case VIRTIO_PCI_QUEUE_SEL:
370 if (val < VIRTIO_QUEUE_MAX)
371 vdev->queue_sel = val;
372 break;
373 case VIRTIO_PCI_QUEUE_NOTIFY:
374 if (val < VIRTIO_QUEUE_MAX) {
375 virtio_queue_notify(vdev, val);
376 }
377 break;
378 case VIRTIO_PCI_STATUS:
379 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
380 virtio_pci_stop_ioeventfd(proxy);
381 }
382
383 virtio_set_status(vdev, val & 0xFF);
384
385 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
386 virtio_pci_start_ioeventfd(proxy);
387 }
388
389 if (vdev->status == 0) {
390 virtio_pci_reset(DEVICE(proxy));
391 }
392
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);
401 }
402 break;
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;
409 break;
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);
417 break;
418 default:
419 error_report("%s: unexpected address 0x%x value 0x%x",
420 __func__, addr, val);
421 break;
422 }
423 }
424
425 static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
426 {
427 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
428 uint32_t ret = 0xFFFFFFFF;
429
430 switch (addr) {
431 case VIRTIO_PCI_HOST_FEATURES:
432 ret = vdev->host_features;
433 break;
434 case VIRTIO_PCI_GUEST_FEATURES:
435 ret = vdev->guest_features;
436 break;
437 case VIRTIO_PCI_QUEUE_PFN:
438 ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
439 >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
440 break;
441 case VIRTIO_PCI_QUEUE_NUM:
442 ret = virtio_queue_get_num(vdev, vdev->queue_sel);
443 break;
444 case VIRTIO_PCI_QUEUE_SEL:
445 ret = vdev->queue_sel;
446 break;
447 case VIRTIO_PCI_STATUS:
448 ret = vdev->status;
449 break;
450 case VIRTIO_PCI_ISR:
451 /* reading from the ISR also clears it. */
452 ret = vdev->isr;
453 vdev->isr = 0;
454 pci_irq_deassert(&proxy->pci_dev);
455 break;
456 case VIRTIO_MSI_CONFIG_VECTOR:
457 ret = vdev->config_vector;
458 break;
459 case VIRTIO_MSI_QUEUE_VECTOR:
460 ret = virtio_queue_vector(vdev, vdev->queue_sel);
461 break;
462 default:
463 break;
464 }
465
466 return ret;
467 }
468
469 static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr,
470 unsigned size)
471 {
472 VirtIOPCIProxy *proxy = opaque;
473 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
474 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
475 uint64_t val = 0;
476 if (addr < config) {
477 return virtio_ioport_read(proxy, addr);
478 }
479 addr -= config;
480
481 switch (size) {
482 case 1:
483 val = virtio_config_readb(vdev, addr);
484 break;
485 case 2:
486 val = virtio_config_readw(vdev, addr);
487 if (virtio_is_big_endian(vdev)) {
488 val = bswap16(val);
489 }
490 break;
491 case 4:
492 val = virtio_config_readl(vdev, addr);
493 if (virtio_is_big_endian(vdev)) {
494 val = bswap32(val);
495 }
496 break;
497 }
498 return val;
499 }
500
501 static void virtio_pci_config_write(void *opaque, hwaddr addr,
502 uint64_t val, unsigned size)
503 {
504 VirtIOPCIProxy *proxy = opaque;
505 uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev);
506 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
507 if (addr < config) {
508 virtio_ioport_write(proxy, addr, val);
509 return;
510 }
511 addr -= config;
512 /*
513 * Virtio-PCI is odd. Ioports are LE but config space is target native
514 * endian.
515 */
516 switch (size) {
517 case 1:
518 virtio_config_writeb(vdev, addr, val);
519 break;
520 case 2:
521 if (virtio_is_big_endian(vdev)) {
522 val = bswap16(val);
523 }
524 virtio_config_writew(vdev, addr, val);
525 break;
526 case 4:
527 if (virtio_is_big_endian(vdev)) {
528 val = bswap32(val);
529 }
530 virtio_config_writel(vdev, addr, val);
531 break;
532 }
533 }
534
535 static const MemoryRegionOps virtio_pci_config_ops = {
536 .read = virtio_pci_config_read,
537 .write = virtio_pci_config_write,
538 .impl = {
539 .min_access_size = 1,
540 .max_access_size = 4,
541 },
542 .endianness = DEVICE_LITTLE_ENDIAN,
543 };
544
545 /* Below are generic functions to do memcpy from/to an address space,
546 * without byteswaps, with input validation.
547 *
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
553 * host.
554 *
555 * Note: host pointer must be aligned.
556 */
557 static
558 void virtio_address_space_write(AddressSpace *as, hwaddr addr,
559 const uint8_t *buf, int len)
560 {
561 uint32_t val;
562
563 /* address_space_* APIs assume an aligned address.
564 * As address is under guest control, handle illegal values.
565 */
566 addr &= ~(len - 1);
567
568 /* Make sure caller aligned buf properly */
569 assert(!(((uintptr_t)buf) & (len - 1)));
570
571 switch (len) {
572 case 1:
573 val = pci_get_byte(buf);
574 address_space_stb(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
575 break;
576 case 2:
577 val = pci_get_word(buf);
578 address_space_stw_le(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
579 break;
580 case 4:
581 val = pci_get_long(buf);
582 address_space_stl_le(as, addr, val, MEMTXATTRS_UNSPECIFIED, NULL);
583 break;
584 default:
585 /* As length is under guest control, handle illegal values. */
586 break;
587 }
588 }
589
590 static void
591 virtio_address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len)
592 {
593 uint32_t val;
594
595 /* address_space_* APIs assume an aligned address.
596 * As address is under guest control, handle illegal values.
597 */
598 addr &= ~(len - 1);
599
600 /* Make sure caller aligned buf properly */
601 assert(!(((uintptr_t)buf) & (len - 1)));
602
603 switch (len) {
604 case 1:
605 val = address_space_ldub(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
606 pci_set_byte(buf, val);
607 break;
608 case 2:
609 val = address_space_lduw_le(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
610 pci_set_word(buf, val);
611 break;
612 case 4:
613 val = address_space_ldl_le(as, addr, MEMTXATTRS_UNSPECIFIED, NULL);
614 pci_set_long(buf, val);
615 break;
616 default:
617 /* As length is under guest control, handle illegal values. */
618 break;
619 }
620 }
621
622 static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
623 uint32_t val, int len)
624 {
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;
628
629 pci_default_write_config(pci_dev, address, val, len);
630
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);
635 }
636
637 if (proxy->config_cap &&
638 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
639 pci_cfg_data),
640 sizeof cfg->pci_cfg_data)) {
641 uint32_t off;
642 uint32_t len;
643
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);
647
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);
652 }
653 }
654 }
655
656 static uint32_t virtio_read_config(PCIDevice *pci_dev,
657 uint32_t address, int len)
658 {
659 VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
660 struct virtio_pci_cfg_cap *cfg;
661
662 if (proxy->config_cap &&
663 ranges_overlap(address, len, proxy->config_cap + offsetof(struct virtio_pci_cfg_cap,
664 pci_cfg_data),
665 sizeof cfg->pci_cfg_data)) {
666 uint32_t off;
667 uint32_t len;
668
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);
672
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);
677 }
678 }
679
680 return pci_default_read_config(pci_dev, address, len);
681 }
682
683 static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy,
684 unsigned int queue_no,
685 unsigned int vector)
686 {
687 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
688 int ret;
689
690 if (irqfd->users == 0) {
691 ret = kvm_irqchip_add_msi_route(kvm_state, vector, &proxy->pci_dev);
692 if (ret < 0) {
693 return ret;
694 }
695 irqfd->virq = ret;
696 }
697 irqfd->users++;
698 return 0;
699 }
700
701 static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy,
702 unsigned int vector)
703 {
704 VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
705 if (--irqfd->users == 0) {
706 kvm_irqchip_release_virq(kvm_state, irqfd->virq);
707 }
708 }
709
710 static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy,
711 unsigned int queue_no,
712 unsigned int vector)
713 {
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);
719 }
720
721 static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy,
722 unsigned int queue_no,
723 unsigned int vector)
724 {
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];
729 int ret;
730
731 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, n, irqfd->virq);
732 assert(ret == 0);
733 }
734
735 static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
736 {
737 PCIDevice *dev = &proxy->pci_dev;
738 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
739 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
740 unsigned int vector;
741 int ret, queue_no;
742
743 for (queue_no = 0; queue_no < nvqs; queue_no++) {
744 if (!virtio_queue_get_num(vdev, queue_no)) {
745 break;
746 }
747 vector = virtio_queue_vector(vdev, queue_no);
748 if (vector >= msix_nr_vectors_allocated(dev)) {
749 continue;
750 }
751 ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector);
752 if (ret < 0) {
753 goto undo;
754 }
755 /* If guest supports masking, set up irqfd now.
756 * Otherwise, delay until unmasked in the frontend.
757 */
758 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
759 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
760 if (ret < 0) {
761 kvm_virtio_pci_vq_vector_release(proxy, vector);
762 goto undo;
763 }
764 }
765 }
766 return 0;
767
768 undo:
769 while (--queue_no >= 0) {
770 vector = virtio_queue_vector(vdev, queue_no);
771 if (vector >= msix_nr_vectors_allocated(dev)) {
772 continue;
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 return ret;
780 }
781
782 static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
783 {
784 PCIDevice *dev = &proxy->pci_dev;
785 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
786 unsigned int vector;
787 int queue_no;
788 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
789
790 for (queue_no = 0; queue_no < nvqs; queue_no++) {
791 if (!virtio_queue_get_num(vdev, queue_no)) {
792 break;
793 }
794 vector = virtio_queue_vector(vdev, queue_no);
795 if (vector >= msix_nr_vectors_allocated(dev)) {
796 continue;
797 }
798 /* If guest supports masking, clean up irqfd now.
799 * Otherwise, it was cleaned when masked in the frontend.
800 */
801 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
802 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
803 }
804 kvm_virtio_pci_vq_vector_release(proxy, vector);
805 }
806 }
807
808 static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy,
809 unsigned int queue_no,
810 unsigned int vector,
811 MSIMessage msg)
812 {
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);
817 VirtIOIRQFD *irqfd;
818 int ret = 0;
819
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,
824 &proxy->pci_dev);
825 if (ret < 0) {
826 return ret;
827 }
828 kvm_irqchip_commit_routes(kvm_state);
829 }
830 }
831
832 /* If guest supports masking, irqfd is already setup, unmask it.
833 * Otherwise, set it up now.
834 */
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);
841 }
842 } else {
843 ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
844 }
845 return ret;
846 }
847
848 static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy,
849 unsigned int queue_no,
850 unsigned int vector)
851 {
852 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
853 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
854
855 /* If guest supports masking, keep irqfd but mask it.
856 * Otherwise, clean it up now.
857 */
858 if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
859 k->guest_notifier_mask(vdev, queue_no, true);
860 } else {
861 kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
862 }
863 }
864
865 static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
866 MSIMessage msg)
867 {
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;
872
873 while (vq) {
874 index = virtio_get_queue_index(vq);
875 if (!virtio_queue_get_num(vdev, index)) {
876 break;
877 }
878 if (index < proxy->nvqs_with_notifiers) {
879 ret = virtio_pci_vq_vector_unmask(proxy, index, vector, msg);
880 if (ret < 0) {
881 goto undo;
882 }
883 ++unmasked;
884 }
885 vq = virtio_vector_next_queue(vq);
886 }
887
888 return 0;
889
890 undo:
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);
896 --unmasked;
897 }
898 vq = virtio_vector_next_queue(vq);
899 }
900 return ret;
901 }
902
903 static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector)
904 {
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);
908 int index;
909
910 while (vq) {
911 index = virtio_get_queue_index(vq);
912 if (!virtio_queue_get_num(vdev, index)) {
913 break;
914 }
915 if (index < proxy->nvqs_with_notifiers) {
916 virtio_pci_vq_vector_mask(proxy, index, vector);
917 }
918 vq = virtio_vector_next_queue(vq);
919 }
920 }
921
922 static void virtio_pci_vector_poll(PCIDevice *dev,
923 unsigned int vector_start,
924 unsigned int vector_end)
925 {
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);
929 int queue_no;
930 unsigned int vector;
931 EventNotifier *notifier;
932 VirtQueue *vq;
933
934 for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) {
935 if (!virtio_queue_get_num(vdev, queue_no)) {
936 break;
937 }
938 vector = virtio_queue_vector(vdev, queue_no);
939 if (vector < vector_start || vector >= vector_end ||
940 !msix_is_masked(dev, vector)) {
941 continue;
942 }
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);
948 }
949 } else if (event_notifier_test_and_clear(notifier)) {
950 msix_set_pending(dev, vector);
951 }
952 }
953 }
954
955 static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
956 bool with_irqfd)
957 {
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);
963
964 if (assign) {
965 int r = event_notifier_init(notifier, 0);
966 if (r < 0) {
967 return r;
968 }
969 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
970 } else {
971 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
972 event_notifier_cleanup(notifier);
973 }
974
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);
979 }
980
981 return 0;
982 }
983
984 static bool virtio_pci_query_guest_notifiers(DeviceState *d)
985 {
986 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
987 return msix_enabled(&proxy->pci_dev);
988 }
989
990 static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
991 {
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);
995 int r, n;
996 bool with_irqfd = msix_enabled(&proxy->pci_dev) &&
997 kvm_msi_via_irqfd_enabled();
998
999 nvqs = MIN(nvqs, VIRTIO_QUEUE_MAX);
1000
1001 /* When deassigning, pass a consistent nvqs value
1002 * to avoid leaking notifiers.
1003 */
1004 assert(assign || nvqs == proxy->nvqs_with_notifiers);
1005
1006 proxy->nvqs_with_notifiers = nvqs;
1007
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;
1015 }
1016 }
1017
1018 for (n = 0; n < nvqs; n++) {
1019 if (!virtio_queue_get_num(vdev, n)) {
1020 break;
1021 }
1022
1023 r = virtio_pci_set_guest_notifier(d, n, assign, with_irqfd);
1024 if (r < 0) {
1025 goto assign_error;
1026 }
1027 }
1028
1029 /* Must set vector notifier after guest notifier has been assigned */
1030 if ((with_irqfd || k->guest_notifier_mask) && assign) {
1031 if (with_irqfd) {
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);
1036 if (r < 0) {
1037 goto assign_error;
1038 }
1039 }
1040 r = msix_set_vector_notifiers(&proxy->pci_dev,
1041 virtio_pci_vector_unmask,
1042 virtio_pci_vector_mask,
1043 virtio_pci_vector_poll);
1044 if (r < 0) {
1045 goto notifiers_error;
1046 }
1047 }
1048
1049 return 0;
1050
1051 notifiers_error:
1052 if (with_irqfd) {
1053 assert(assign);
1054 kvm_virtio_pci_vector_release(proxy, nvqs);
1055 }
1056
1057 assign_error:
1058 /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
1059 assert(assign);
1060 while (--n >= 0) {
1061 virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd);
1062 }
1063 return r;
1064 }
1065
1066 static void virtio_pci_vmstate_change(DeviceState *d, bool running)
1067 {
1068 VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
1069 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1070
1071 if (running) {
1072 /* Old QEMU versions did not set bus master enable on status write.
1073 * Detect DRIVER set and enable it.
1074 */
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);
1081 }
1082 virtio_pci_start_ioeventfd(proxy);
1083 } else {
1084 virtio_pci_stop_ioeventfd(proxy);
1085 }
1086 }
1087
1088 #ifdef CONFIG_VIRTFS
1089 static void virtio_9p_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1090 {
1091 V9fsPCIState *dev = VIRTIO_9P_PCI(vpci_dev);
1092 DeviceState *vdev = DEVICE(&dev->vdev);
1093
1094 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1095 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1096 }
1097
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(),
1103 };
1104
1105 static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
1106 {
1107 DeviceClass *dc = DEVICE_CLASS(klass);
1108 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1109 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1110
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;
1118 }
1119
1120 static void virtio_9p_pci_instance_init(Object *obj)
1121 {
1122 V9fsPCIState *dev = VIRTIO_9P_PCI(obj);
1123
1124 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1125 TYPE_VIRTIO_9P);
1126 }
1127
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,
1134 };
1135 #endif /* CONFIG_VIRTFS */
1136
1137 /*
1138 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
1139 */
1140
1141 static int virtio_pci_query_nvectors(DeviceState *d)
1142 {
1143 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1144
1145 return proxy->nvectors;
1146 }
1147
1148 static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy,
1149 struct virtio_pci_cap *cap)
1150 {
1151 PCIDevice *dev = &proxy->pci_dev;
1152 int offset;
1153
1154 offset = pci_add_capability(dev, PCI_CAP_ID_VNDR, 0, cap->cap_len);
1155 assert(offset > 0);
1156
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);
1160
1161 return offset;
1162 }
1163
1164 static uint64_t virtio_pci_common_read(void *opaque, hwaddr addr,
1165 unsigned size)
1166 {
1167 VirtIOPCIProxy *proxy = opaque;
1168 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1169 uint32_t val = 0;
1170 int i;
1171
1172 switch (addr) {
1173 case VIRTIO_PCI_COMMON_DFSELECT:
1174 val = proxy->dfselect;
1175 break;
1176 case VIRTIO_PCI_COMMON_DF:
1177 if (proxy->dfselect <= 1) {
1178 val = (vdev->host_features & ~VIRTIO_LEGACY_FEATURES) >>
1179 (32 * proxy->dfselect);
1180 }
1181 break;
1182 case VIRTIO_PCI_COMMON_GFSELECT:
1183 val = proxy->gfselect;
1184 break;
1185 case VIRTIO_PCI_COMMON_GF:
1186 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1187 val = proxy->guest_features[proxy->gfselect];
1188 }
1189 break;
1190 case VIRTIO_PCI_COMMON_MSIX:
1191 val = vdev->config_vector;
1192 break;
1193 case VIRTIO_PCI_COMMON_NUMQ:
1194 for (i = 0; i < VIRTIO_QUEUE_MAX; ++i) {
1195 if (virtio_queue_get_num(vdev, i)) {
1196 val = i + 1;
1197 }
1198 }
1199 break;
1200 case VIRTIO_PCI_COMMON_STATUS:
1201 val = vdev->status;
1202 break;
1203 case VIRTIO_PCI_COMMON_CFGGENERATION:
1204 val = vdev->generation;
1205 break;
1206 case VIRTIO_PCI_COMMON_Q_SELECT:
1207 val = vdev->queue_sel;
1208 break;
1209 case VIRTIO_PCI_COMMON_Q_SIZE:
1210 val = virtio_queue_get_num(vdev, vdev->queue_sel);
1211 break;
1212 case VIRTIO_PCI_COMMON_Q_MSIX:
1213 val = virtio_queue_vector(vdev, vdev->queue_sel);
1214 break;
1215 case VIRTIO_PCI_COMMON_Q_ENABLE:
1216 val = proxy->vqs[vdev->queue_sel].enabled;
1217 break;
1218 case VIRTIO_PCI_COMMON_Q_NOFF:
1219 /* Simply map queues in order */
1220 val = vdev->queue_sel;
1221 break;
1222 case VIRTIO_PCI_COMMON_Q_DESCLO:
1223 val = proxy->vqs[vdev->queue_sel].desc[0];
1224 break;
1225 case VIRTIO_PCI_COMMON_Q_DESCHI:
1226 val = proxy->vqs[vdev->queue_sel].desc[1];
1227 break;
1228 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1229 val = proxy->vqs[vdev->queue_sel].avail[0];
1230 break;
1231 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1232 val = proxy->vqs[vdev->queue_sel].avail[1];
1233 break;
1234 case VIRTIO_PCI_COMMON_Q_USEDLO:
1235 val = proxy->vqs[vdev->queue_sel].used[0];
1236 break;
1237 case VIRTIO_PCI_COMMON_Q_USEDHI:
1238 val = proxy->vqs[vdev->queue_sel].used[1];
1239 break;
1240 default:
1241 val = 0;
1242 }
1243
1244 return val;
1245 }
1246
1247 static void virtio_pci_common_write(void *opaque, hwaddr addr,
1248 uint64_t val, unsigned size)
1249 {
1250 VirtIOPCIProxy *proxy = opaque;
1251 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1252
1253 switch (addr) {
1254 case VIRTIO_PCI_COMMON_DFSELECT:
1255 proxy->dfselect = val;
1256 break;
1257 case VIRTIO_PCI_COMMON_GFSELECT:
1258 proxy->gfselect = val;
1259 break;
1260 case VIRTIO_PCI_COMMON_GF:
1261 if (proxy->gfselect < ARRAY_SIZE(proxy->guest_features)) {
1262 proxy->guest_features[proxy->gfselect] = val;
1263 virtio_set_features(vdev,
1264 (((uint64_t)proxy->guest_features[1]) << 32) |
1265 proxy->guest_features[0]);
1266 }
1267 break;
1268 case VIRTIO_PCI_COMMON_MSIX:
1269 msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
1270 /* Make it possible for guest to discover an error took place. */
1271 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1272 val = VIRTIO_NO_VECTOR;
1273 }
1274 vdev->config_vector = val;
1275 break;
1276 case VIRTIO_PCI_COMMON_STATUS:
1277 if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
1278 virtio_pci_stop_ioeventfd(proxy);
1279 }
1280
1281 virtio_set_status(vdev, val & 0xFF);
1282
1283 if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
1284 virtio_pci_start_ioeventfd(proxy);
1285 }
1286
1287 if (vdev->status == 0) {
1288 virtio_pci_reset(DEVICE(proxy));
1289 }
1290
1291 break;
1292 case VIRTIO_PCI_COMMON_Q_SELECT:
1293 if (val < VIRTIO_QUEUE_MAX) {
1294 vdev->queue_sel = val;
1295 }
1296 break;
1297 case VIRTIO_PCI_COMMON_Q_SIZE:
1298 proxy->vqs[vdev->queue_sel].num = val;
1299 break;
1300 case VIRTIO_PCI_COMMON_Q_MSIX:
1301 msix_vector_unuse(&proxy->pci_dev,
1302 virtio_queue_vector(vdev, vdev->queue_sel));
1303 /* Make it possible for guest to discover an error took place. */
1304 if (msix_vector_use(&proxy->pci_dev, val) < 0) {
1305 val = VIRTIO_NO_VECTOR;
1306 }
1307 virtio_queue_set_vector(vdev, vdev->queue_sel, val);
1308 break;
1309 case VIRTIO_PCI_COMMON_Q_ENABLE:
1310 /* TODO: need a way to put num back on reset. */
1311 virtio_queue_set_num(vdev, vdev->queue_sel,
1312 proxy->vqs[vdev->queue_sel].num);
1313 virtio_queue_set_rings(vdev, vdev->queue_sel,
1314 ((uint64_t)proxy->vqs[vdev->queue_sel].desc[1]) << 32 |
1315 proxy->vqs[vdev->queue_sel].desc[0],
1316 ((uint64_t)proxy->vqs[vdev->queue_sel].avail[1]) << 32 |
1317 proxy->vqs[vdev->queue_sel].avail[0],
1318 ((uint64_t)proxy->vqs[vdev->queue_sel].used[1]) << 32 |
1319 proxy->vqs[vdev->queue_sel].used[0]);
1320 proxy->vqs[vdev->queue_sel].enabled = 1;
1321 break;
1322 case VIRTIO_PCI_COMMON_Q_DESCLO:
1323 proxy->vqs[vdev->queue_sel].desc[0] = val;
1324 break;
1325 case VIRTIO_PCI_COMMON_Q_DESCHI:
1326 proxy->vqs[vdev->queue_sel].desc[1] = val;
1327 break;
1328 case VIRTIO_PCI_COMMON_Q_AVAILLO:
1329 proxy->vqs[vdev->queue_sel].avail[0] = val;
1330 break;
1331 case VIRTIO_PCI_COMMON_Q_AVAILHI:
1332 proxy->vqs[vdev->queue_sel].avail[1] = val;
1333 break;
1334 case VIRTIO_PCI_COMMON_Q_USEDLO:
1335 proxy->vqs[vdev->queue_sel].used[0] = val;
1336 break;
1337 case VIRTIO_PCI_COMMON_Q_USEDHI:
1338 proxy->vqs[vdev->queue_sel].used[1] = val;
1339 break;
1340 default:
1341 break;
1342 }
1343 }
1344
1345
1346 static uint64_t virtio_pci_notify_read(void *opaque, hwaddr addr,
1347 unsigned size)
1348 {
1349 return 0;
1350 }
1351
1352 static void virtio_pci_notify_write(void *opaque, hwaddr addr,
1353 uint64_t val, unsigned size)
1354 {
1355 VirtIODevice *vdev = opaque;
1356 VirtIOPCIProxy *proxy = VIRTIO_PCI(DEVICE(vdev)->parent_bus->parent);
1357 unsigned queue = addr / virtio_pci_queue_mem_mult(proxy);
1358
1359 if (queue < VIRTIO_QUEUE_MAX) {
1360 virtio_queue_notify(vdev, queue);
1361 }
1362 }
1363
1364 static void virtio_pci_notify_write_pio(void *opaque, hwaddr addr,
1365 uint64_t val, unsigned size)
1366 {
1367 VirtIODevice *vdev = opaque;
1368 unsigned queue = val;
1369
1370 if (queue < VIRTIO_QUEUE_MAX) {
1371 virtio_queue_notify(vdev, queue);
1372 }
1373 }
1374
1375 static uint64_t virtio_pci_isr_read(void *opaque, hwaddr addr,
1376 unsigned size)
1377 {
1378 VirtIOPCIProxy *proxy = opaque;
1379 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1380 uint64_t val = vdev->isr;
1381
1382 vdev->isr = 0;
1383 pci_irq_deassert(&proxy->pci_dev);
1384
1385 return val;
1386 }
1387
1388 static void virtio_pci_isr_write(void *opaque, hwaddr addr,
1389 uint64_t val, unsigned size)
1390 {
1391 }
1392
1393 static uint64_t virtio_pci_device_read(void *opaque, hwaddr addr,
1394 unsigned size)
1395 {
1396 VirtIODevice *vdev = opaque;
1397 uint64_t val = 0;
1398
1399 switch (size) {
1400 case 1:
1401 val = virtio_config_modern_readb(vdev, addr);
1402 break;
1403 case 2:
1404 val = virtio_config_modern_readw(vdev, addr);
1405 break;
1406 case 4:
1407 val = virtio_config_modern_readl(vdev, addr);
1408 break;
1409 }
1410 return val;
1411 }
1412
1413 static void virtio_pci_device_write(void *opaque, hwaddr addr,
1414 uint64_t val, unsigned size)
1415 {
1416 VirtIODevice *vdev = opaque;
1417 switch (size) {
1418 case 1:
1419 virtio_config_modern_writeb(vdev, addr, val);
1420 break;
1421 case 2:
1422 virtio_config_modern_writew(vdev, addr, val);
1423 break;
1424 case 4:
1425 virtio_config_modern_writel(vdev, addr, val);
1426 break;
1427 }
1428 }
1429
1430 static void virtio_pci_modern_regions_init(VirtIOPCIProxy *proxy)
1431 {
1432 static const MemoryRegionOps common_ops = {
1433 .read = virtio_pci_common_read,
1434 .write = virtio_pci_common_write,
1435 .impl = {
1436 .min_access_size = 1,
1437 .max_access_size = 4,
1438 },
1439 .endianness = DEVICE_LITTLE_ENDIAN,
1440 };
1441 static const MemoryRegionOps isr_ops = {
1442 .read = virtio_pci_isr_read,
1443 .write = virtio_pci_isr_write,
1444 .impl = {
1445 .min_access_size = 1,
1446 .max_access_size = 4,
1447 },
1448 .endianness = DEVICE_LITTLE_ENDIAN,
1449 };
1450 static const MemoryRegionOps device_ops = {
1451 .read = virtio_pci_device_read,
1452 .write = virtio_pci_device_write,
1453 .impl = {
1454 .min_access_size = 1,
1455 .max_access_size = 4,
1456 },
1457 .endianness = DEVICE_LITTLE_ENDIAN,
1458 };
1459 static const MemoryRegionOps notify_ops = {
1460 .read = virtio_pci_notify_read,
1461 .write = virtio_pci_notify_write,
1462 .impl = {
1463 .min_access_size = 1,
1464 .max_access_size = 4,
1465 },
1466 .endianness = DEVICE_LITTLE_ENDIAN,
1467 };
1468 static const MemoryRegionOps notify_pio_ops = {
1469 .read = virtio_pci_notify_read,
1470 .write = virtio_pci_notify_write_pio,
1471 .impl = {
1472 .min_access_size = 1,
1473 .max_access_size = 4,
1474 },
1475 .endianness = DEVICE_LITTLE_ENDIAN,
1476 };
1477
1478
1479 memory_region_init_io(&proxy->common.mr, OBJECT(proxy),
1480 &common_ops,
1481 proxy,
1482 "virtio-pci-common",
1483 proxy->common.size);
1484
1485 memory_region_init_io(&proxy->isr.mr, OBJECT(proxy),
1486 &isr_ops,
1487 proxy,
1488 "virtio-pci-isr",
1489 proxy->isr.size);
1490
1491 memory_region_init_io(&proxy->device.mr, OBJECT(proxy),
1492 &device_ops,
1493 virtio_bus_get_device(&proxy->bus),
1494 "virtio-pci-device",
1495 proxy->device.size);
1496
1497 memory_region_init_io(&proxy->notify.mr, OBJECT(proxy),
1498 &notify_ops,
1499 virtio_bus_get_device(&proxy->bus),
1500 "virtio-pci-notify",
1501 proxy->notify.size);
1502
1503 memory_region_init_io(&proxy->notify_pio.mr, OBJECT(proxy),
1504 &notify_pio_ops,
1505 virtio_bus_get_device(&proxy->bus),
1506 "virtio-pci-notify-pio",
1507 proxy->notify_pio.size);
1508 }
1509
1510 static void virtio_pci_modern_region_map(VirtIOPCIProxy *proxy,
1511 VirtIOPCIRegion *region,
1512 struct virtio_pci_cap *cap,
1513 MemoryRegion *mr,
1514 uint8_t bar)
1515 {
1516 memory_region_add_subregion(mr, region->offset, &region->mr);
1517
1518 cap->cfg_type = region->type;
1519 cap->bar = bar;
1520 cap->offset = cpu_to_le32(region->offset);
1521 cap->length = cpu_to_le32(region->size);
1522 virtio_pci_add_mem_cap(proxy, cap);
1523
1524 }
1525
1526 static void virtio_pci_modern_mem_region_map(VirtIOPCIProxy *proxy,
1527 VirtIOPCIRegion *region,
1528 struct virtio_pci_cap *cap)
1529 {
1530 virtio_pci_modern_region_map(proxy, region, cap,
1531 &proxy->modern_bar, proxy->modern_mem_bar_idx);
1532 }
1533
1534 static void virtio_pci_modern_io_region_map(VirtIOPCIProxy *proxy,
1535 VirtIOPCIRegion *region,
1536 struct virtio_pci_cap *cap)
1537 {
1538 virtio_pci_modern_region_map(proxy, region, cap,
1539 &proxy->io_bar, proxy->modern_io_bar_idx);
1540 }
1541
1542 static void virtio_pci_modern_mem_region_unmap(VirtIOPCIProxy *proxy,
1543 VirtIOPCIRegion *region)
1544 {
1545 memory_region_del_subregion(&proxy->modern_bar,
1546 &region->mr);
1547 }
1548
1549 static void virtio_pci_modern_io_region_unmap(VirtIOPCIProxy *proxy,
1550 VirtIOPCIRegion *region)
1551 {
1552 memory_region_del_subregion(&proxy->io_bar,
1553 &region->mr);
1554 }
1555
1556 static void virtio_pci_pre_plugged(DeviceState *d, Error **errp)
1557 {
1558 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1559 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1560
1561 if (virtio_pci_modern(proxy)) {
1562 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1563 }
1564
1565 virtio_add_feature(&vdev->host_features, VIRTIO_F_BAD_FEATURE);
1566 }
1567
1568 /* This is called by virtio-bus just after the device is plugged. */
1569 static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
1570 {
1571 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1572 VirtioBusState *bus = &proxy->bus;
1573 bool legacy = virtio_pci_legacy(proxy);
1574 bool modern;
1575 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1576 uint8_t *config;
1577 uint32_t size;
1578 VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
1579
1580 /*
1581 * Virtio capabilities present without
1582 * VIRTIO_F_VERSION_1 confuses guests
1583 */
1584 if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
1585 virtio_pci_disable_modern(proxy);
1586
1587 if (!legacy) {
1588 error_setg(errp, "Device doesn't support modern mode, and legacy"
1589 " mode is disabled");
1590 error_append_hint(errp, "Set disable-legacy to off\n");
1591
1592 return;
1593 }
1594 }
1595
1596 modern = virtio_pci_modern(proxy);
1597
1598 config = proxy->pci_dev.config;
1599 if (proxy->class_code) {
1600 pci_config_set_class(config, proxy->class_code);
1601 }
1602
1603 if (legacy) {
1604 /* legacy and transitional */
1605 pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID,
1606 pci_get_word(config + PCI_VENDOR_ID));
1607 pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus));
1608 } else {
1609 /* pure virtio-1.0 */
1610 pci_set_word(config + PCI_VENDOR_ID,
1611 PCI_VENDOR_ID_REDHAT_QUMRANET);
1612 pci_set_word(config + PCI_DEVICE_ID,
1613 0x1040 + virtio_bus_get_vdev_id(bus));
1614 pci_config_set_revision(config, 1);
1615 }
1616 config[PCI_INTERRUPT_PIN] = 1;
1617
1618
1619 if (modern) {
1620 struct virtio_pci_cap cap = {
1621 .cap_len = sizeof cap,
1622 };
1623 struct virtio_pci_notify_cap notify = {
1624 .cap.cap_len = sizeof notify,
1625 .notify_off_multiplier =
1626 cpu_to_le32(virtio_pci_queue_mem_mult(proxy)),
1627 };
1628 struct virtio_pci_cfg_cap cfg = {
1629 .cap.cap_len = sizeof cfg,
1630 .cap.cfg_type = VIRTIO_PCI_CAP_PCI_CFG,
1631 };
1632 struct virtio_pci_notify_cap notify_pio = {
1633 .cap.cap_len = sizeof notify,
1634 .notify_off_multiplier = cpu_to_le32(0x0),
1635 };
1636
1637 struct virtio_pci_cfg_cap *cfg_mask;
1638
1639 virtio_pci_modern_regions_init(proxy);
1640
1641 virtio_pci_modern_mem_region_map(proxy, &proxy->common, &cap);
1642 virtio_pci_modern_mem_region_map(proxy, &proxy->isr, &cap);
1643 virtio_pci_modern_mem_region_map(proxy, &proxy->device, &cap);
1644 virtio_pci_modern_mem_region_map(proxy, &proxy->notify, &notify.cap);
1645
1646 if (modern_pio) {
1647 memory_region_init(&proxy->io_bar, OBJECT(proxy),
1648 "virtio-pci-io", 0x4);
1649
1650 pci_register_bar(&proxy->pci_dev, proxy->modern_io_bar_idx,
1651 PCI_BASE_ADDRESS_SPACE_IO, &proxy->io_bar);
1652
1653 virtio_pci_modern_io_region_map(proxy, &proxy->notify_pio,
1654 &notify_pio.cap);
1655 }
1656
1657 pci_register_bar(&proxy->pci_dev, proxy->modern_mem_bar_idx,
1658 PCI_BASE_ADDRESS_SPACE_MEMORY |
1659 PCI_BASE_ADDRESS_MEM_PREFETCH |
1660 PCI_BASE_ADDRESS_MEM_TYPE_64,
1661 &proxy->modern_bar);
1662
1663 proxy->config_cap = virtio_pci_add_mem_cap(proxy, &cfg.cap);
1664 cfg_mask = (void *)(proxy->pci_dev.wmask + proxy->config_cap);
1665 pci_set_byte(&cfg_mask->cap.bar, ~0x0);
1666 pci_set_long((uint8_t *)&cfg_mask->cap.offset, ~0x0);
1667 pci_set_long((uint8_t *)&cfg_mask->cap.length, ~0x0);
1668 pci_set_long(cfg_mask->pci_cfg_data, ~0x0);
1669 }
1670
1671 if (proxy->nvectors) {
1672 int err = msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
1673 proxy->msix_bar_idx);
1674 if (err) {
1675 /* Notice when a system that supports MSIx can't initialize it. */
1676 if (err != -ENOTSUP) {
1677 error_report("unable to init msix vectors to %" PRIu32,
1678 proxy->nvectors);
1679 }
1680 proxy->nvectors = 0;
1681 }
1682 }
1683
1684 proxy->pci_dev.config_write = virtio_write_config;
1685 proxy->pci_dev.config_read = virtio_read_config;
1686
1687 if (legacy) {
1688 size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev)
1689 + virtio_bus_get_vdev_config_len(bus);
1690 size = pow2ceil(size);
1691
1692 memory_region_init_io(&proxy->bar, OBJECT(proxy),
1693 &virtio_pci_config_ops,
1694 proxy, "virtio-pci", size);
1695
1696 pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar_idx,
1697 PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar);
1698 }
1699 }
1700
1701 static void virtio_pci_device_unplugged(DeviceState *d)
1702 {
1703 VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
1704 bool modern = virtio_pci_modern(proxy);
1705 bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY;
1706
1707 virtio_pci_stop_ioeventfd(proxy);
1708
1709 if (modern) {
1710 virtio_pci_modern_mem_region_unmap(proxy, &proxy->common);
1711 virtio_pci_modern_mem_region_unmap(proxy, &proxy->isr);
1712 virtio_pci_modern_mem_region_unmap(proxy, &proxy->device);
1713 virtio_pci_modern_mem_region_unmap(proxy, &proxy->notify);
1714 if (modern_pio) {
1715 virtio_pci_modern_io_region_unmap(proxy, &proxy->notify_pio);
1716 }
1717 }
1718 }
1719
1720 static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
1721 {
1722 VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
1723 VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev);
1724 bool pcie_port = pci_bus_is_express(pci_dev->bus) &&
1725 !pci_bus_is_root(pci_dev->bus);
1726
1727 if (!kvm_has_many_ioeventfds()) {
1728 proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
1729 }
1730
1731 /*
1732 * virtio pci bar layout used by default.
1733 * subclasses can re-arrange things if needed.
1734 *
1735 * region 0 -- virtio legacy io bar
1736 * region 1 -- msi-x bar
1737 * region 4+5 -- virtio modern memory (64bit) bar
1738 *
1739 */
1740 proxy->legacy_io_bar_idx = 0;
1741 proxy->msix_bar_idx = 1;
1742 proxy->modern_io_bar_idx = 2;
1743 proxy->modern_mem_bar_idx = 4;
1744
1745 proxy->common.offset = 0x0;
1746 proxy->common.size = 0x1000;
1747 proxy->common.type = VIRTIO_PCI_CAP_COMMON_CFG;
1748
1749 proxy->isr.offset = 0x1000;
1750 proxy->isr.size = 0x1000;
1751 proxy->isr.type = VIRTIO_PCI_CAP_ISR_CFG;
1752
1753 proxy->device.offset = 0x2000;
1754 proxy->device.size = 0x1000;
1755 proxy->device.type = VIRTIO_PCI_CAP_DEVICE_CFG;
1756
1757 proxy->notify.offset = 0x3000;
1758 proxy->notify.size = virtio_pci_queue_mem_mult(proxy) * VIRTIO_QUEUE_MAX;
1759 proxy->notify.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1760
1761 proxy->notify_pio.offset = 0x0;
1762 proxy->notify_pio.size = 0x4;
1763 proxy->notify_pio.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
1764
1765 /* subclasses can enforce modern, so do this unconditionally */
1766 memory_region_init(&proxy->modern_bar, OBJECT(proxy), "virtio-pci",
1767 /* PCI BAR regions must be powers of 2 */
1768 pow2ceil(proxy->notify.offset + proxy->notify.size));
1769
1770 memory_region_init_alias(&proxy->modern_cfg,
1771 OBJECT(proxy),
1772 "virtio-pci-cfg",
1773 &proxy->modern_bar,
1774 0,
1775 memory_region_size(&proxy->modern_bar));
1776
1777 address_space_init(&proxy->modern_as, &proxy->modern_cfg, "virtio-pci-cfg-as");
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, PCI_PM_SIZEOF);
1798 assert(pos > 0);
1799
1800 /*
1801 * Indicates that this function complies with revision 1.2 of the
1802 * PCI Power Management Interface Specification.
1803 */
1804 pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
1805 } else {
1806 /*
1807 * make future invocations of pci_is_express() return false
1808 * and pci_config_size() return PCI_CONFIG_SPACE_SIZE.
1809 */
1810 pci_dev->cap_present &= ~QEMU_PCI_CAP_EXPRESS;
1811 }
1812
1813 virtio_pci_bus_new(&proxy->bus, sizeof(proxy->bus), proxy);
1814 if (k->realize) {
1815 k->realize(proxy, errp);
1816 }
1817 }
1818
1819 static void virtio_pci_exit(PCIDevice *pci_dev)
1820 {
1821 VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
1822
1823 msix_uninit_exclusive_bar(pci_dev);
1824 address_space_destroy(&proxy->modern_as);
1825 }
1826
1827 static void virtio_pci_reset(DeviceState *qdev)
1828 {
1829 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1830 VirtioBusState *bus = VIRTIO_BUS(&proxy->bus);
1831 int i;
1832
1833 virtio_pci_stop_ioeventfd(proxy);
1834 virtio_bus_reset(bus);
1835 msix_unuse_all_vectors(&proxy->pci_dev);
1836
1837 for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
1838 proxy->vqs[i].enabled = 0;
1839 }
1840 }
1841
1842 static Property virtio_pci_properties[] = {
1843 DEFINE_PROP_BIT("virtio-pci-bus-master-bug-migration", VirtIOPCIProxy, flags,
1844 VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT, false),
1845 DEFINE_PROP_ON_OFF_AUTO("disable-legacy", VirtIOPCIProxy, disable_legacy,
1846 ON_OFF_AUTO_AUTO),
1847 DEFINE_PROP_BOOL("disable-modern", VirtIOPCIProxy, disable_modern, false),
1848 DEFINE_PROP_BIT("migrate-extra", VirtIOPCIProxy, flags,
1849 VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, true),
1850 DEFINE_PROP_BIT("modern-pio-notify", VirtIOPCIProxy, flags,
1851 VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, false),
1852 DEFINE_PROP_BIT("x-disable-pcie", VirtIOPCIProxy, flags,
1853 VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, false),
1854 DEFINE_PROP_BIT("page-per-vq", VirtIOPCIProxy, flags,
1855 VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT, false),
1856 DEFINE_PROP_END_OF_LIST(),
1857 };
1858
1859 static void virtio_pci_dc_realize(DeviceState *qdev, Error **errp)
1860 {
1861 VirtioPCIClass *vpciklass = VIRTIO_PCI_GET_CLASS(qdev);
1862 VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev);
1863 PCIDevice *pci_dev = &proxy->pci_dev;
1864
1865 if (!(proxy->flags & VIRTIO_PCI_FLAG_DISABLE_PCIE) &&
1866 virtio_pci_modern(proxy)) {
1867 pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
1868 }
1869
1870 vpciklass->parent_dc_realize(qdev, errp);
1871 }
1872
1873 static void virtio_pci_class_init(ObjectClass *klass, void *data)
1874 {
1875 DeviceClass *dc = DEVICE_CLASS(klass);
1876 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1877 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
1878
1879 dc->props = virtio_pci_properties;
1880 k->realize = virtio_pci_realize;
1881 k->exit = virtio_pci_exit;
1882 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1883 k->revision = VIRTIO_PCI_ABI_VERSION;
1884 k->class_id = PCI_CLASS_OTHERS;
1885 vpciklass->parent_dc_realize = dc->realize;
1886 dc->realize = virtio_pci_dc_realize;
1887 dc->reset = virtio_pci_reset;
1888 }
1889
1890 static const TypeInfo virtio_pci_info = {
1891 .name = TYPE_VIRTIO_PCI,
1892 .parent = TYPE_PCI_DEVICE,
1893 .instance_size = sizeof(VirtIOPCIProxy),
1894 .class_init = virtio_pci_class_init,
1895 .class_size = sizeof(VirtioPCIClass),
1896 .abstract = true,
1897 };
1898
1899 /* virtio-blk-pci */
1900
1901 static Property virtio_blk_pci_properties[] = {
1902 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
1903 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1904 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1905 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
1906 DEFINE_PROP_END_OF_LIST(),
1907 };
1908
1909 static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1910 {
1911 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
1912 DeviceState *vdev = DEVICE(&dev->vdev);
1913
1914 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1915 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1916 }
1917
1918 static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
1919 {
1920 DeviceClass *dc = DEVICE_CLASS(klass);
1921 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1922 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1923
1924 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1925 dc->props = virtio_blk_pci_properties;
1926 k->realize = virtio_blk_pci_realize;
1927 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1928 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
1929 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
1930 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
1931 }
1932
1933 static void virtio_blk_pci_instance_init(Object *obj)
1934 {
1935 VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
1936
1937 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1938 TYPE_VIRTIO_BLK);
1939 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
1940 &error_abort);
1941 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
1942 "bootindex", &error_abort);
1943 }
1944
1945 static const TypeInfo virtio_blk_pci_info = {
1946 .name = TYPE_VIRTIO_BLK_PCI,
1947 .parent = TYPE_VIRTIO_PCI,
1948 .instance_size = sizeof(VirtIOBlkPCI),
1949 .instance_init = virtio_blk_pci_instance_init,
1950 .class_init = virtio_blk_pci_class_init,
1951 };
1952
1953 /* virtio-scsi-pci */
1954
1955 static Property virtio_scsi_pci_properties[] = {
1956 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
1957 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
1958 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
1959 DEV_NVECTORS_UNSPECIFIED),
1960 DEFINE_PROP_END_OF_LIST(),
1961 };
1962
1963 static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
1964 {
1965 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev);
1966 DeviceState *vdev = DEVICE(&dev->vdev);
1967 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
1968 DeviceState *proxy = DEVICE(vpci_dev);
1969 char *bus_name;
1970
1971 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
1972 vpci_dev->nvectors = vs->conf.num_queues + 3;
1973 }
1974
1975 /*
1976 * For command line compatibility, this sets the virtio-scsi-device bus
1977 * name as before.
1978 */
1979 if (proxy->id) {
1980 bus_name = g_strdup_printf("%s.0", proxy->id);
1981 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
1982 g_free(bus_name);
1983 }
1984
1985 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
1986 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1987 }
1988
1989 static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
1990 {
1991 DeviceClass *dc = DEVICE_CLASS(klass);
1992 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
1993 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
1994
1995 k->realize = virtio_scsi_pci_realize;
1996 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1997 dc->props = virtio_scsi_pci_properties;
1998 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
1999 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2000 pcidev_k->revision = 0x00;
2001 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2002 }
2003
2004 static void virtio_scsi_pci_instance_init(Object *obj)
2005 {
2006 VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj);
2007
2008 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2009 TYPE_VIRTIO_SCSI);
2010 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread",
2011 &error_abort);
2012 }
2013
2014 static const TypeInfo virtio_scsi_pci_info = {
2015 .name = TYPE_VIRTIO_SCSI_PCI,
2016 .parent = TYPE_VIRTIO_PCI,
2017 .instance_size = sizeof(VirtIOSCSIPCI),
2018 .instance_init = virtio_scsi_pci_instance_init,
2019 .class_init = virtio_scsi_pci_class_init,
2020 };
2021
2022 /* vhost-scsi-pci */
2023
2024 #ifdef CONFIG_VHOST_SCSI
2025 static Property vhost_scsi_pci_properties[] = {
2026 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
2027 DEV_NVECTORS_UNSPECIFIED),
2028 DEFINE_PROP_END_OF_LIST(),
2029 };
2030
2031 static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2032 {
2033 VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev);
2034 DeviceState *vdev = DEVICE(&dev->vdev);
2035 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
2036
2037 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2038 vpci_dev->nvectors = vs->conf.num_queues + 3;
2039 }
2040
2041 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2042 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2043 }
2044
2045 static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data)
2046 {
2047 DeviceClass *dc = DEVICE_CLASS(klass);
2048 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2049 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2050 k->realize = vhost_scsi_pci_realize;
2051 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
2052 dc->props = vhost_scsi_pci_properties;
2053 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2054 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
2055 pcidev_k->revision = 0x00;
2056 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
2057 }
2058
2059 static void vhost_scsi_pci_instance_init(Object *obj)
2060 {
2061 VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj);
2062
2063 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2064 TYPE_VHOST_SCSI);
2065 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2066 "bootindex", &error_abort);
2067 }
2068
2069 static const TypeInfo vhost_scsi_pci_info = {
2070 .name = TYPE_VHOST_SCSI_PCI,
2071 .parent = TYPE_VIRTIO_PCI,
2072 .instance_size = sizeof(VHostSCSIPCI),
2073 .instance_init = vhost_scsi_pci_instance_init,
2074 .class_init = vhost_scsi_pci_class_init,
2075 };
2076 #endif
2077
2078 /* vhost-vsock-pci */
2079
2080 #ifdef CONFIG_VHOST_VSOCK
2081 static Property vhost_vsock_pci_properties[] = {
2082 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
2083 DEFINE_PROP_END_OF_LIST(),
2084 };
2085
2086 static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2087 {
2088 VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev);
2089 DeviceState *vdev = DEVICE(&dev->vdev);
2090
2091 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2092 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2093 }
2094
2095 static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
2096 {
2097 DeviceClass *dc = DEVICE_CLASS(klass);
2098 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2099 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2100 k->realize = vhost_vsock_pci_realize;
2101 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2102 dc->props = vhost_vsock_pci_properties;
2103 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2104 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
2105 pcidev_k->revision = 0x00;
2106 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
2107 }
2108
2109 static void vhost_vsock_pci_instance_init(Object *obj)
2110 {
2111 VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
2112
2113 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2114 TYPE_VHOST_VSOCK);
2115 }
2116
2117 static const TypeInfo vhost_vsock_pci_info = {
2118 .name = TYPE_VHOST_VSOCK_PCI,
2119 .parent = TYPE_VIRTIO_PCI,
2120 .instance_size = sizeof(VHostVSockPCI),
2121 .instance_init = vhost_vsock_pci_instance_init,
2122 .class_init = vhost_vsock_pci_class_init,
2123 };
2124 #endif
2125
2126 /* virtio-balloon-pci */
2127
2128 static Property virtio_balloon_pci_properties[] = {
2129 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2130 DEFINE_PROP_END_OF_LIST(),
2131 };
2132
2133 static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2134 {
2135 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev);
2136 DeviceState *vdev = DEVICE(&dev->vdev);
2137
2138 if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
2139 vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
2140 vpci_dev->class_code = PCI_CLASS_OTHERS;
2141 }
2142
2143 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2144 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2145 }
2146
2147 static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
2148 {
2149 DeviceClass *dc = DEVICE_CLASS(klass);
2150 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2151 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2152 k->realize = virtio_balloon_pci_realize;
2153 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2154 dc->props = virtio_balloon_pci_properties;
2155 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2156 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON;
2157 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2158 pcidev_k->class_id = PCI_CLASS_OTHERS;
2159 }
2160
2161 static void virtio_balloon_pci_instance_init(Object *obj)
2162 {
2163 VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj);
2164
2165 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2166 TYPE_VIRTIO_BALLOON);
2167 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
2168 "guest-stats", &error_abort);
2169 object_property_add_alias(obj, "guest-stats-polling-interval",
2170 OBJECT(&dev->vdev),
2171 "guest-stats-polling-interval", &error_abort);
2172 }
2173
2174 static const TypeInfo virtio_balloon_pci_info = {
2175 .name = TYPE_VIRTIO_BALLOON_PCI,
2176 .parent = TYPE_VIRTIO_PCI,
2177 .instance_size = sizeof(VirtIOBalloonPCI),
2178 .instance_init = virtio_balloon_pci_instance_init,
2179 .class_init = virtio_balloon_pci_class_init,
2180 };
2181
2182 /* virtio-serial-pci */
2183
2184 static void virtio_serial_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2185 {
2186 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev);
2187 DeviceState *vdev = DEVICE(&dev->vdev);
2188 DeviceState *proxy = DEVICE(vpci_dev);
2189 char *bus_name;
2190
2191 if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
2192 vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
2193 vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */
2194 vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER;
2195 }
2196
2197 /* backwards-compatibility with machines that were created with
2198 DEV_NVECTORS_UNSPECIFIED */
2199 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
2200 vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1;
2201 }
2202
2203 /*
2204 * For command line compatibility, this sets the virtio-serial-device bus
2205 * name as before.
2206 */
2207 if (proxy->id) {
2208 bus_name = g_strdup_printf("%s.0", proxy->id);
2209 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
2210 g_free(bus_name);
2211 }
2212
2213 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2214 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2215 }
2216
2217 static Property virtio_serial_pci_properties[] = {
2218 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2219 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
2220 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2221 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
2222 DEFINE_PROP_END_OF_LIST(),
2223 };
2224
2225 static void virtio_serial_pci_class_init(ObjectClass *klass, void *data)
2226 {
2227 DeviceClass *dc = DEVICE_CLASS(klass);
2228 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2229 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2230 k->realize = virtio_serial_pci_realize;
2231 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2232 dc->props = virtio_serial_pci_properties;
2233 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2234 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE;
2235 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2236 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
2237 }
2238
2239 static void virtio_serial_pci_instance_init(Object *obj)
2240 {
2241 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj);
2242
2243 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2244 TYPE_VIRTIO_SERIAL);
2245 }
2246
2247 static const TypeInfo virtio_serial_pci_info = {
2248 .name = TYPE_VIRTIO_SERIAL_PCI,
2249 .parent = TYPE_VIRTIO_PCI,
2250 .instance_size = sizeof(VirtIOSerialPCI),
2251 .instance_init = virtio_serial_pci_instance_init,
2252 .class_init = virtio_serial_pci_class_init,
2253 };
2254
2255 /* virtio-net-pci */
2256
2257 static Property virtio_net_properties[] = {
2258 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
2259 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
2260 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
2261 DEFINE_PROP_END_OF_LIST(),
2262 };
2263
2264 static void virtio_net_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2265 {
2266 DeviceState *qdev = DEVICE(vpci_dev);
2267 VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev);
2268 DeviceState *vdev = DEVICE(&dev->vdev);
2269
2270 virtio_net_set_netclient_name(&dev->vdev, qdev->id,
2271 object_get_typename(OBJECT(qdev)));
2272 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2273 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2274 }
2275
2276 static void virtio_net_pci_class_init(ObjectClass *klass, void *data)
2277 {
2278 DeviceClass *dc = DEVICE_CLASS(klass);
2279 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
2280 VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
2281
2282 k->romfile = "efi-virtio.rom";
2283 k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2284 k->device_id = PCI_DEVICE_ID_VIRTIO_NET;
2285 k->revision = VIRTIO_PCI_ABI_VERSION;
2286 k->class_id = PCI_CLASS_NETWORK_ETHERNET;
2287 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
2288 dc->props = virtio_net_properties;
2289 vpciklass->realize = virtio_net_pci_realize;
2290 }
2291
2292 static void virtio_net_pci_instance_init(Object *obj)
2293 {
2294 VirtIONetPCI *dev = VIRTIO_NET_PCI(obj);
2295
2296 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2297 TYPE_VIRTIO_NET);
2298 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
2299 "bootindex", &error_abort);
2300 }
2301
2302 static const TypeInfo virtio_net_pci_info = {
2303 .name = TYPE_VIRTIO_NET_PCI,
2304 .parent = TYPE_VIRTIO_PCI,
2305 .instance_size = sizeof(VirtIONetPCI),
2306 .instance_init = virtio_net_pci_instance_init,
2307 .class_init = virtio_net_pci_class_init,
2308 };
2309
2310 /* virtio-rng-pci */
2311
2312 static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2313 {
2314 VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev);
2315 DeviceState *vdev = DEVICE(&vrng->vdev);
2316 Error *err = NULL;
2317
2318 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2319 object_property_set_bool(OBJECT(vdev), true, "realized", &err);
2320 if (err) {
2321 error_propagate(errp, err);
2322 return;
2323 }
2324
2325 object_property_set_link(OBJECT(vrng),
2326 OBJECT(vrng->vdev.conf.rng), "rng",
2327 NULL);
2328 }
2329
2330 static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
2331 {
2332 DeviceClass *dc = DEVICE_CLASS(klass);
2333 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2334 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2335
2336 k->realize = virtio_rng_pci_realize;
2337 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
2338
2339 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
2340 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG;
2341 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
2342 pcidev_k->class_id = PCI_CLASS_OTHERS;
2343 }
2344
2345 static void virtio_rng_initfn(Object *obj)
2346 {
2347 VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj);
2348
2349 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2350 TYPE_VIRTIO_RNG);
2351 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), "rng",
2352 &error_abort);
2353 }
2354
2355 static const TypeInfo virtio_rng_pci_info = {
2356 .name = TYPE_VIRTIO_RNG_PCI,
2357 .parent = TYPE_VIRTIO_PCI,
2358 .instance_size = sizeof(VirtIORngPCI),
2359 .instance_init = virtio_rng_initfn,
2360 .class_init = virtio_rng_pci_class_init,
2361 };
2362
2363 /* virtio-input-pci */
2364
2365 static Property virtio_input_pci_properties[] = {
2366 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
2367 DEFINE_PROP_END_OF_LIST(),
2368 };
2369
2370 static void virtio_input_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
2371 {
2372 VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
2373 DeviceState *vdev = DEVICE(&vinput->vdev);
2374
2375 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
2376 virtio_pci_force_virtio_1(vpci_dev);
2377 object_property_set_bool(OBJECT(vdev), true, "realized", errp);
2378 }
2379
2380 static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
2381 {
2382 DeviceClass *dc = DEVICE_CLASS(klass);
2383 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
2384 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2385
2386 dc->props = virtio_input_pci_properties;
2387 k->realize = virtio_input_pci_realize;
2388 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
2389
2390 pcidev_k->class_id = PCI_CLASS_INPUT_OTHER;
2391 }
2392
2393 static void virtio_input_hid_kbd_pci_class_init(ObjectClass *klass, void *data)
2394 {
2395 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2396
2397 pcidev_k->class_id = PCI_CLASS_INPUT_KEYBOARD;
2398 }
2399
2400 static void virtio_input_hid_mouse_pci_class_init(ObjectClass *klass,
2401 void *data)
2402 {
2403 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
2404
2405 pcidev_k->class_id = PCI_CLASS_INPUT_MOUSE;
2406 }
2407
2408 static void virtio_keyboard_initfn(Object *obj)
2409 {
2410 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2411
2412 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2413 TYPE_VIRTIO_KEYBOARD);
2414 }
2415
2416 static void virtio_mouse_initfn(Object *obj)
2417 {
2418 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2419
2420 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2421 TYPE_VIRTIO_MOUSE);
2422 }
2423
2424 static void virtio_tablet_initfn(Object *obj)
2425 {
2426 VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
2427
2428 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2429 TYPE_VIRTIO_TABLET);
2430 }
2431
2432 static const TypeInfo virtio_input_pci_info = {
2433 .name = TYPE_VIRTIO_INPUT_PCI,
2434 .parent = TYPE_VIRTIO_PCI,
2435 .instance_size = sizeof(VirtIOInputPCI),
2436 .class_init = virtio_input_pci_class_init,
2437 .abstract = true,
2438 };
2439
2440 static const TypeInfo virtio_input_hid_pci_info = {
2441 .name = TYPE_VIRTIO_INPUT_HID_PCI,
2442 .parent = TYPE_VIRTIO_INPUT_PCI,
2443 .instance_size = sizeof(VirtIOInputHIDPCI),
2444 .abstract = true,
2445 };
2446
2447 static const TypeInfo virtio_keyboard_pci_info = {
2448 .name = TYPE_VIRTIO_KEYBOARD_PCI,
2449 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2450 .class_init = virtio_input_hid_kbd_pci_class_init,
2451 .instance_size = sizeof(VirtIOInputHIDPCI),
2452 .instance_init = virtio_keyboard_initfn,
2453 };
2454
2455 static const TypeInfo virtio_mouse_pci_info = {
2456 .name = TYPE_VIRTIO_MOUSE_PCI,
2457 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2458 .class_init = virtio_input_hid_mouse_pci_class_init,
2459 .instance_size = sizeof(VirtIOInputHIDPCI),
2460 .instance_init = virtio_mouse_initfn,
2461 };
2462
2463 static const TypeInfo virtio_tablet_pci_info = {
2464 .name = TYPE_VIRTIO_TABLET_PCI,
2465 .parent = TYPE_VIRTIO_INPUT_HID_PCI,
2466 .instance_size = sizeof(VirtIOInputHIDPCI),
2467 .instance_init = virtio_tablet_initfn,
2468 };
2469
2470 #ifdef CONFIG_LINUX
2471 static void virtio_host_initfn(Object *obj)
2472 {
2473 VirtIOInputHostPCI *dev = VIRTIO_INPUT_HOST_PCI(obj);
2474
2475 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
2476 TYPE_VIRTIO_INPUT_HOST);
2477 }
2478
2479 static const TypeInfo virtio_host_pci_info = {
2480 .name = TYPE_VIRTIO_INPUT_HOST_PCI,
2481 .parent = TYPE_VIRTIO_INPUT_PCI,
2482 .instance_size = sizeof(VirtIOInputHostPCI),
2483 .instance_init = virtio_host_initfn,
2484 };
2485 #endif
2486
2487 /* virtio-pci-bus */
2488
2489 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
2490 VirtIOPCIProxy *dev)
2491 {
2492 DeviceState *qdev = DEVICE(dev);
2493 char virtio_bus_name[] = "virtio-bus";
2494
2495 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_PCI_BUS, qdev,
2496 virtio_bus_name);
2497 }
2498
2499 static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
2500 {
2501 BusClass *bus_class = BUS_CLASS(klass);
2502 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
2503 bus_class->max_dev = 1;
2504 k->notify = virtio_pci_notify;
2505 k->save_config = virtio_pci_save_config;
2506 k->load_config = virtio_pci_load_config;
2507 k->save_queue = virtio_pci_save_queue;
2508 k->load_queue = virtio_pci_load_queue;
2509 k->save_extra_state = virtio_pci_save_extra_state;
2510 k->load_extra_state = virtio_pci_load_extra_state;
2511 k->has_extra_state = virtio_pci_has_extra_state;
2512 k->query_guest_notifiers = virtio_pci_query_guest_notifiers;
2513 k->set_guest_notifiers = virtio_pci_set_guest_notifiers;
2514 k->vmstate_change = virtio_pci_vmstate_change;
2515 k->pre_plugged = virtio_pci_pre_plugged;
2516 k->device_plugged = virtio_pci_device_plugged;
2517 k->device_unplugged = virtio_pci_device_unplugged;
2518 k->query_nvectors = virtio_pci_query_nvectors;
2519 k->ioeventfd_disabled = virtio_pci_ioeventfd_disabled;
2520 k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
2521 }
2522
2523 static const TypeInfo virtio_pci_bus_info = {
2524 .name = TYPE_VIRTIO_PCI_BUS,
2525 .parent = TYPE_VIRTIO_BUS,
2526 .instance_size = sizeof(VirtioPCIBusState),
2527 .class_init = virtio_pci_bus_class_init,
2528 };
2529
2530 static void virtio_pci_register_types(void)
2531 {
2532 type_register_static(&virtio_rng_pci_info);
2533 type_register_static(&virtio_input_pci_info);
2534 type_register_static(&virtio_input_hid_pci_info);
2535 type_register_static(&virtio_keyboard_pci_info);
2536 type_register_static(&virtio_mouse_pci_info);
2537 type_register_static(&virtio_tablet_pci_info);
2538 #ifdef CONFIG_LINUX
2539 type_register_static(&virtio_host_pci_info);
2540 #endif
2541 type_register_static(&virtio_pci_bus_info);
2542 type_register_static(&virtio_pci_info);
2543 #ifdef CONFIG_VIRTFS
2544 type_register_static(&virtio_9p_pci_info);
2545 #endif
2546 type_register_static(&virtio_blk_pci_info);
2547 type_register_static(&virtio_scsi_pci_info);
2548 type_register_static(&virtio_balloon_pci_info);
2549 type_register_static(&virtio_serial_pci_info);
2550 type_register_static(&virtio_net_pci_info);
2551 #ifdef CONFIG_VHOST_SCSI
2552 type_register_static(&vhost_scsi_pci_info);
2553 #endif
2554 #ifdef CONFIG_VHOST_VSOCK
2555 type_register_static(&vhost_vsock_pci_info);
2556 #endif
2557 }
2558
2559 type_init(virtio_pci_register_types)
AR7 emulation for QEMU