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53c25cea PB |
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 | */ | |
15 | ||
16 | #include <inttypes.h> | |
17 | ||
18 | #include "virtio.h" | |
8172539d MT |
19 | #include "virtio-blk.h" |
20 | #include "virtio-net.h" | |
6b331efb | 21 | #include "virtio-serial.h" |
53c25cea | 22 | #include "pci.h" |
2f792016 | 23 | #include "qemu-error.h" |
aba800a3 | 24 | #include "msix.h" |
a1e0fea5 | 25 | #include "net.h" |
97b15621 | 26 | #include "loader.h" |
ade80dc8 | 27 | #include "kvm.h" |
2446333c | 28 | #include "blockdev.h" |
9fe1ebeb | 29 | #include "virtio-pci.h" |
1129714f | 30 | #include "range.h" |
53c25cea PB |
31 | |
32 | /* from Linux's linux/virtio_pci.h */ | |
33 | ||
34 | /* A 32-bit r/o bitmask of the features supported by the host */ | |
35 | #define VIRTIO_PCI_HOST_FEATURES 0 | |
36 | ||
37 | /* A 32-bit r/w bitmask of features activated by the guest */ | |
38 | #define VIRTIO_PCI_GUEST_FEATURES 4 | |
39 | ||
40 | /* A 32-bit r/w PFN for the currently selected queue */ | |
41 | #define VIRTIO_PCI_QUEUE_PFN 8 | |
42 | ||
43 | /* A 16-bit r/o queue size for the currently selected queue */ | |
44 | #define VIRTIO_PCI_QUEUE_NUM 12 | |
45 | ||
46 | /* A 16-bit r/w queue selector */ | |
47 | #define VIRTIO_PCI_QUEUE_SEL 14 | |
48 | ||
49 | /* A 16-bit r/w queue notifier */ | |
50 | #define VIRTIO_PCI_QUEUE_NOTIFY 16 | |
51 | ||
52 | /* An 8-bit device status register. */ | |
53 | #define VIRTIO_PCI_STATUS 18 | |
54 | ||
55 | /* An 8-bit r/o interrupt status register. Reading the value will return the | |
56 | * current contents of the ISR and will also clear it. This is effectively | |
57 | * a read-and-acknowledge. */ | |
58 | #define VIRTIO_PCI_ISR 19 | |
59 | ||
aba800a3 MT |
60 | /* MSI-X registers: only enabled if MSI-X is enabled. */ |
61 | /* A 16-bit vector for configuration changes. */ | |
62 | #define VIRTIO_MSI_CONFIG_VECTOR 20 | |
63 | /* A 16-bit vector for selected queue notifications. */ | |
64 | #define VIRTIO_MSI_QUEUE_VECTOR 22 | |
65 | ||
66 | /* Config space size */ | |
67 | #define VIRTIO_PCI_CONFIG_NOMSI 20 | |
68 | #define VIRTIO_PCI_CONFIG_MSI 24 | |
69 | #define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \ | |
70 | VIRTIO_PCI_CONFIG_MSI : \ | |
71 | VIRTIO_PCI_CONFIG_NOMSI) | |
72 | ||
73 | /* The remaining space is defined by each driver as the per-driver | |
74 | * configuration space */ | |
75 | #define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \ | |
76 | VIRTIO_PCI_CONFIG_MSI : \ | |
77 | VIRTIO_PCI_CONFIG_NOMSI) | |
53c25cea | 78 | |
53c25cea PB |
79 | /* How many bits to shift physical queue address written to QUEUE_PFN. |
80 | * 12 is historical, and due to x86 page size. */ | |
81 | #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 | |
82 | ||
3dbca8e6 SH |
83 | /* Flags track per-device state like workarounds for quirks in older guests. */ |
84 | #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) | |
c81131db | 85 | |
25db9ebe SH |
86 | /* Performance improves when virtqueue kick processing is decoupled from the |
87 | * vcpu thread using ioeventfd for some devices. */ | |
88 | #define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1 | |
89 | #define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT) | |
90 | ||
53c25cea PB |
91 | /* QEMU doesn't strictly need write barriers since everything runs in |
92 | * lock-step. We'll leave the calls to wmb() in though to make it obvious for | |
93 | * KVM or if kqemu gets SMP support. | |
94 | */ | |
95 | #define wmb() do { } while (0) | |
96 | ||
53c25cea PB |
97 | /* virtio device */ |
98 | ||
7055e687 | 99 | static void virtio_pci_notify(void *opaque, uint16_t vector) |
53c25cea PB |
100 | { |
101 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
102 | if (msix_enabled(&proxy->pci_dev)) |
103 | msix_notify(&proxy->pci_dev, vector); | |
104 | else | |
105 | qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); | |
53c25cea PB |
106 | } |
107 | ||
ff24bd58 MT |
108 | static void virtio_pci_save_config(void * opaque, QEMUFile *f) |
109 | { | |
110 | VirtIOPCIProxy *proxy = opaque; | |
111 | pci_device_save(&proxy->pci_dev, f); | |
112 | msix_save(&proxy->pci_dev, f); | |
113 | if (msix_present(&proxy->pci_dev)) | |
114 | qemu_put_be16(f, proxy->vdev->config_vector); | |
115 | } | |
116 | ||
117 | static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f) | |
118 | { | |
119 | VirtIOPCIProxy *proxy = opaque; | |
120 | if (msix_present(&proxy->pci_dev)) | |
121 | qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); | |
122 | } | |
123 | ||
124 | static int virtio_pci_load_config(void * opaque, QEMUFile *f) | |
125 | { | |
126 | VirtIOPCIProxy *proxy = opaque; | |
127 | int ret; | |
128 | ret = pci_device_load(&proxy->pci_dev, f); | |
e6da7680 | 129 | if (ret) { |
ff24bd58 | 130 | return ret; |
e6da7680 | 131 | } |
ff24bd58 | 132 | msix_load(&proxy->pci_dev, f); |
e6da7680 | 133 | if (msix_present(&proxy->pci_dev)) { |
ff24bd58 | 134 | qemu_get_be16s(f, &proxy->vdev->config_vector); |
e6da7680 MT |
135 | } else { |
136 | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; | |
137 | } | |
138 | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { | |
139 | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); | |
140 | } | |
ff24bd58 MT |
141 | return 0; |
142 | } | |
143 | ||
144 | static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) | |
145 | { | |
146 | VirtIOPCIProxy *proxy = opaque; | |
147 | uint16_t vector; | |
e6da7680 MT |
148 | if (msix_present(&proxy->pci_dev)) { |
149 | qemu_get_be16s(f, &vector); | |
150 | } else { | |
151 | vector = VIRTIO_NO_VECTOR; | |
152 | } | |
ff24bd58 | 153 | virtio_queue_set_vector(proxy->vdev, n, vector); |
e6da7680 MT |
154 | if (vector != VIRTIO_NO_VECTOR) { |
155 | return msix_vector_use(&proxy->pci_dev, vector); | |
156 | } | |
ff24bd58 MT |
157 | return 0; |
158 | } | |
159 | ||
25db9ebe SH |
160 | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
161 | int n, bool assign) | |
162 | { | |
163 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
164 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
165 | int r; | |
166 | if (assign) { | |
167 | r = event_notifier_init(notifier, 1); | |
168 | if (r < 0) { | |
b36e3914 MT |
169 | error_report("%s: unable to init event notifier: %d", |
170 | __func__, r); | |
25db9ebe SH |
171 | return r; |
172 | } | |
173 | r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier), | |
174 | proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY, | |
175 | n, assign); | |
176 | if (r < 0) { | |
b36e3914 MT |
177 | error_report("%s: unable to map ioeventfd: %d", |
178 | __func__, r); | |
25db9ebe SH |
179 | event_notifier_cleanup(notifier); |
180 | } | |
181 | } else { | |
182 | r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier), | |
183 | proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY, | |
184 | n, assign); | |
185 | if (r < 0) { | |
b36e3914 MT |
186 | error_report("%s: unable to unmap ioeventfd: %d", |
187 | __func__, r); | |
25db9ebe SH |
188 | return r; |
189 | } | |
190 | ||
191 | /* Handle the race condition where the guest kicked and we deassigned | |
192 | * before we got around to handling the kick. | |
193 | */ | |
194 | if (event_notifier_test_and_clear(notifier)) { | |
195 | virtio_queue_notify_vq(vq); | |
196 | } | |
197 | ||
198 | event_notifier_cleanup(notifier); | |
199 | } | |
200 | return r; | |
201 | } | |
202 | ||
203 | static void virtio_pci_host_notifier_read(void *opaque) | |
204 | { | |
205 | VirtQueue *vq = opaque; | |
206 | EventNotifier *n = virtio_queue_get_host_notifier(vq); | |
207 | if (event_notifier_test_and_clear(n)) { | |
208 | virtio_queue_notify_vq(vq); | |
209 | } | |
210 | } | |
211 | ||
212 | static void virtio_pci_set_host_notifier_fd_handler(VirtIOPCIProxy *proxy, | |
213 | int n, bool assign) | |
214 | { | |
215 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
216 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
217 | if (assign) { | |
218 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
219 | virtio_pci_host_notifier_read, NULL, vq); | |
220 | } else { | |
221 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
222 | NULL, NULL, NULL); | |
223 | } | |
224 | } | |
225 | ||
b36e3914 | 226 | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe SH |
227 | { |
228 | int n, r; | |
229 | ||
230 | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || | |
231 | proxy->ioeventfd_disabled || | |
232 | proxy->ioeventfd_started) { | |
b36e3914 | 233 | return; |
25db9ebe SH |
234 | } |
235 | ||
236 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
237 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
238 | continue; | |
239 | } | |
240 | ||
241 | r = virtio_pci_set_host_notifier_internal(proxy, n, true); | |
242 | if (r < 0) { | |
243 | goto assign_error; | |
244 | } | |
245 | ||
246 | virtio_pci_set_host_notifier_fd_handler(proxy, n, true); | |
247 | } | |
248 | proxy->ioeventfd_started = true; | |
b36e3914 | 249 | return; |
25db9ebe SH |
250 | |
251 | assign_error: | |
252 | while (--n >= 0) { | |
253 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
254 | continue; | |
255 | } | |
256 | ||
257 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
b36e3914 MT |
258 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); |
259 | assert(r >= 0); | |
25db9ebe SH |
260 | } |
261 | proxy->ioeventfd_started = false; | |
b36e3914 | 262 | error_report("%s: failed. Fallback to a userspace (slower).", __func__); |
25db9ebe SH |
263 | } |
264 | ||
b36e3914 | 265 | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe | 266 | { |
b36e3914 | 267 | int r; |
25db9ebe SH |
268 | int n; |
269 | ||
270 | if (!proxy->ioeventfd_started) { | |
b36e3914 | 271 | return; |
25db9ebe SH |
272 | } |
273 | ||
274 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
275 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
276 | continue; | |
277 | } | |
278 | ||
279 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
b36e3914 MT |
280 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); |
281 | assert(r >= 0); | |
25db9ebe SH |
282 | } |
283 | proxy->ioeventfd_started = false; | |
25db9ebe SH |
284 | } |
285 | ||
e489030d | 286 | static void virtio_pci_reset(DeviceState *d) |
7055e687 | 287 | { |
e489030d | 288 | VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
25db9ebe | 289 | virtio_pci_stop_ioeventfd(proxy); |
7055e687 | 290 | virtio_reset(proxy->vdev); |
aba800a3 | 291 | msix_reset(&proxy->pci_dev); |
25db9ebe | 292 | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
7055e687 MT |
293 | } |
294 | ||
53c25cea PB |
295 | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
296 | { | |
297 | VirtIOPCIProxy *proxy = opaque; | |
298 | VirtIODevice *vdev = proxy->vdev; | |
c227f099 | 299 | target_phys_addr_t pa; |
53c25cea | 300 | |
53c25cea PB |
301 | switch (addr) { |
302 | case VIRTIO_PCI_GUEST_FEATURES: | |
303 | /* Guest does not negotiate properly? We have to assume nothing. */ | |
304 | if (val & (1 << VIRTIO_F_BAD_FEATURE)) { | |
305 | if (vdev->bad_features) | |
8172539d | 306 | val = proxy->host_features & vdev->bad_features(vdev); |
53c25cea PB |
307 | else |
308 | val = 0; | |
309 | } | |
310 | if (vdev->set_features) | |
311 | vdev->set_features(vdev, val); | |
704a76fc | 312 | vdev->guest_features = val; |
53c25cea PB |
313 | break; |
314 | case VIRTIO_PCI_QUEUE_PFN: | |
c227f099 | 315 | pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
1b8e9b27 | 316 | if (pa == 0) { |
25db9ebe | 317 | virtio_pci_stop_ioeventfd(proxy); |
1b8e9b27 MT |
318 | virtio_reset(proxy->vdev); |
319 | msix_unuse_all_vectors(&proxy->pci_dev); | |
320 | } | |
7055e687 MT |
321 | else |
322 | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); | |
53c25cea PB |
323 | break; |
324 | case VIRTIO_PCI_QUEUE_SEL: | |
325 | if (val < VIRTIO_PCI_QUEUE_MAX) | |
326 | vdev->queue_sel = val; | |
327 | break; | |
328 | case VIRTIO_PCI_QUEUE_NOTIFY: | |
7157e2e2 SH |
329 | if (val < VIRTIO_PCI_QUEUE_MAX) { |
330 | virtio_queue_notify(vdev, val); | |
331 | } | |
53c25cea PB |
332 | break; |
333 | case VIRTIO_PCI_STATUS: | |
25db9ebe SH |
334 | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) { |
335 | virtio_pci_stop_ioeventfd(proxy); | |
336 | } | |
337 | ||
3e607cb5 | 338 | virtio_set_status(vdev, val & 0xFF); |
25db9ebe SH |
339 | |
340 | if (val & VIRTIO_CONFIG_S_DRIVER_OK) { | |
341 | virtio_pci_start_ioeventfd(proxy); | |
342 | } | |
343 | ||
1b8e9b27 MT |
344 | if (vdev->status == 0) { |
345 | virtio_reset(proxy->vdev); | |
346 | msix_unuse_all_vectors(&proxy->pci_dev); | |
347 | } | |
c81131db AG |
348 | |
349 | /* Linux before 2.6.34 sets the device as OK without enabling | |
350 | the PCI device bus master bit. In this case we need to disable | |
351 | some safety checks. */ | |
352 | if ((val & VIRTIO_CONFIG_S_DRIVER_OK) && | |
353 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
3dbca8e6 | 354 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
c81131db | 355 | } |
53c25cea | 356 | break; |
aba800a3 MT |
357 | case VIRTIO_MSI_CONFIG_VECTOR: |
358 | msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); | |
359 | /* Make it possible for guest to discover an error took place. */ | |
360 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
361 | val = VIRTIO_NO_VECTOR; | |
362 | vdev->config_vector = val; | |
363 | break; | |
364 | case VIRTIO_MSI_QUEUE_VECTOR: | |
365 | msix_vector_unuse(&proxy->pci_dev, | |
366 | virtio_queue_vector(vdev, vdev->queue_sel)); | |
367 | /* Make it possible for guest to discover an error took place. */ | |
368 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
369 | val = VIRTIO_NO_VECTOR; | |
370 | virtio_queue_set_vector(vdev, vdev->queue_sel, val); | |
371 | break; | |
372 | default: | |
4e02d460 SH |
373 | error_report("%s: unexpected address 0x%x value 0x%x", |
374 | __func__, addr, val); | |
aba800a3 | 375 | break; |
53c25cea PB |
376 | } |
377 | } | |
378 | ||
aba800a3 | 379 | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) |
53c25cea | 380 | { |
53c25cea PB |
381 | VirtIODevice *vdev = proxy->vdev; |
382 | uint32_t ret = 0xFFFFFFFF; | |
383 | ||
53c25cea PB |
384 | switch (addr) { |
385 | case VIRTIO_PCI_HOST_FEATURES: | |
8172539d | 386 | ret = proxy->host_features; |
53c25cea PB |
387 | break; |
388 | case VIRTIO_PCI_GUEST_FEATURES: | |
704a76fc | 389 | ret = vdev->guest_features; |
53c25cea PB |
390 | break; |
391 | case VIRTIO_PCI_QUEUE_PFN: | |
392 | ret = virtio_queue_get_addr(vdev, vdev->queue_sel) | |
393 | >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; | |
394 | break; | |
395 | case VIRTIO_PCI_QUEUE_NUM: | |
396 | ret = virtio_queue_get_num(vdev, vdev->queue_sel); | |
397 | break; | |
398 | case VIRTIO_PCI_QUEUE_SEL: | |
399 | ret = vdev->queue_sel; | |
400 | break; | |
401 | case VIRTIO_PCI_STATUS: | |
402 | ret = vdev->status; | |
403 | break; | |
404 | case VIRTIO_PCI_ISR: | |
405 | /* reading from the ISR also clears it. */ | |
406 | ret = vdev->isr; | |
407 | vdev->isr = 0; | |
7055e687 | 408 | qemu_set_irq(proxy->pci_dev.irq[0], 0); |
53c25cea | 409 | break; |
aba800a3 MT |
410 | case VIRTIO_MSI_CONFIG_VECTOR: |
411 | ret = vdev->config_vector; | |
412 | break; | |
413 | case VIRTIO_MSI_QUEUE_VECTOR: | |
414 | ret = virtio_queue_vector(vdev, vdev->queue_sel); | |
415 | break; | |
53c25cea PB |
416 | default: |
417 | break; | |
418 | } | |
419 | ||
420 | return ret; | |
421 | } | |
422 | ||
423 | static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr) | |
424 | { | |
425 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
426 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
427 | addr -= proxy->addr; | |
428 | if (addr < config) | |
429 | return virtio_ioport_read(proxy, addr); | |
430 | addr -= config; | |
53c25cea PB |
431 | return virtio_config_readb(proxy->vdev, addr); |
432 | } | |
433 | ||
434 | static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr) | |
435 | { | |
436 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
437 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
438 | addr -= proxy->addr; | |
439 | if (addr < config) | |
440 | return virtio_ioport_read(proxy, addr); | |
441 | addr -= config; | |
53c25cea PB |
442 | return virtio_config_readw(proxy->vdev, addr); |
443 | } | |
444 | ||
445 | static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) | |
446 | { | |
447 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
448 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
449 | addr -= proxy->addr; | |
450 | if (addr < config) | |
451 | return virtio_ioport_read(proxy, addr); | |
452 | addr -= config; | |
53c25cea PB |
453 | return virtio_config_readl(proxy->vdev, addr); |
454 | } | |
455 | ||
456 | static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) | |
457 | { | |
458 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
459 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
460 | addr -= proxy->addr; | |
461 | if (addr < config) { | |
462 | virtio_ioport_write(proxy, addr, val); | |
463 | return; | |
464 | } | |
465 | addr -= config; | |
53c25cea PB |
466 | virtio_config_writeb(proxy->vdev, addr, val); |
467 | } | |
468 | ||
469 | static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val) | |
470 | { | |
471 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
472 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
473 | addr -= proxy->addr; | |
474 | if (addr < config) { | |
475 | virtio_ioport_write(proxy, addr, val); | |
476 | return; | |
477 | } | |
478 | addr -= config; | |
53c25cea PB |
479 | virtio_config_writew(proxy->vdev, addr, val); |
480 | } | |
481 | ||
482 | static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val) | |
483 | { | |
484 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
485 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
486 | addr -= proxy->addr; | |
487 | if (addr < config) { | |
488 | virtio_ioport_write(proxy, addr, val); | |
489 | return; | |
490 | } | |
491 | addr -= config; | |
53c25cea PB |
492 | virtio_config_writel(proxy->vdev, addr, val); |
493 | } | |
494 | ||
495 | static void virtio_map(PCIDevice *pci_dev, int region_num, | |
6e355d90 | 496 | pcibus_t addr, pcibus_t size, int type) |
53c25cea PB |
497 | { |
498 | VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev); | |
499 | VirtIODevice *vdev = proxy->vdev; | |
aba800a3 | 500 | unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len; |
53c25cea PB |
501 | |
502 | proxy->addr = addr; | |
53c25cea | 503 | |
aba800a3 MT |
504 | register_ioport_write(addr, config_len, 1, virtio_pci_config_writeb, proxy); |
505 | register_ioport_write(addr, config_len, 2, virtio_pci_config_writew, proxy); | |
506 | register_ioport_write(addr, config_len, 4, virtio_pci_config_writel, proxy); | |
507 | register_ioport_read(addr, config_len, 1, virtio_pci_config_readb, proxy); | |
508 | register_ioport_read(addr, config_len, 2, virtio_pci_config_readw, proxy); | |
509 | register_ioport_read(addr, config_len, 4, virtio_pci_config_readl, proxy); | |
53c25cea | 510 | |
aba800a3 | 511 | if (vdev->config_len) |
53c25cea | 512 | vdev->get_config(vdev, vdev->config); |
aba800a3 MT |
513 | } |
514 | ||
515 | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, | |
516 | uint32_t val, int len) | |
517 | { | |
ed757e14 YV |
518 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
519 | ||
1129714f MT |
520 | pci_default_write_config(pci_dev, address, val, len); |
521 | ||
522 | if (range_covers_byte(address, len, PCI_COMMAND) && | |
523 | !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && | |
524 | !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { | |
525 | virtio_pci_stop_ioeventfd(proxy); | |
526 | virtio_set_status(proxy->vdev, | |
527 | proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); | |
ed757e14 YV |
528 | } |
529 | ||
85352471 | 530 | msix_write_config(pci_dev, address, val, len); |
53c25cea PB |
531 | } |
532 | ||
6d74ca5a MT |
533 | static unsigned virtio_pci_get_features(void *opaque) |
534 | { | |
8172539d MT |
535 | VirtIOPCIProxy *proxy = opaque; |
536 | return proxy->host_features; | |
6d74ca5a MT |
537 | } |
538 | ||
ade80dc8 MT |
539 | static void virtio_pci_guest_notifier_read(void *opaque) |
540 | { | |
541 | VirtQueue *vq = opaque; | |
542 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); | |
543 | if (event_notifier_test_and_clear(n)) { | |
544 | virtio_irq(vq); | |
545 | } | |
546 | } | |
547 | ||
548 | static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) | |
549 | { | |
550 | VirtIOPCIProxy *proxy = opaque; | |
551 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
552 | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); | |
553 | ||
554 | if (assign) { | |
555 | int r = event_notifier_init(notifier, 0); | |
556 | if (r < 0) { | |
557 | return r; | |
558 | } | |
559 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
560 | virtio_pci_guest_notifier_read, NULL, vq); | |
561 | } else { | |
562 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
563 | NULL, NULL, NULL); | |
564 | event_notifier_cleanup(notifier); | |
565 | } | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
5430a28f MT |
570 | static bool virtio_pci_query_guest_notifiers(void *opaque) |
571 | { | |
572 | VirtIOPCIProxy *proxy = opaque; | |
573 | return msix_enabled(&proxy->pci_dev); | |
574 | } | |
575 | ||
54dd9321 MT |
576 | static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
577 | { | |
578 | VirtIOPCIProxy *proxy = opaque; | |
579 | VirtIODevice *vdev = proxy->vdev; | |
580 | int r, n; | |
581 | ||
582 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
583 | if (!virtio_queue_get_num(vdev, n)) { | |
584 | break; | |
585 | } | |
586 | ||
587 | r = virtio_pci_set_guest_notifier(opaque, n, assign); | |
588 | if (r < 0) { | |
589 | goto assign_error; | |
590 | } | |
591 | } | |
592 | ||
593 | return 0; | |
594 | ||
595 | assign_error: | |
596 | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ | |
597 | while (--n >= 0) { | |
598 | virtio_pci_set_guest_notifier(opaque, n, !assign); | |
599 | } | |
600 | return r; | |
601 | } | |
602 | ||
ade80dc8 MT |
603 | static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
604 | { | |
605 | VirtIOPCIProxy *proxy = opaque; | |
25db9ebe SH |
606 | |
607 | /* Stop using ioeventfd for virtqueue kick if the device starts using host | |
608 | * notifiers. This makes it easy to avoid stepping on each others' toes. | |
609 | */ | |
610 | proxy->ioeventfd_disabled = assign; | |
ade80dc8 | 611 | if (assign) { |
25db9ebe SH |
612 | virtio_pci_stop_ioeventfd(proxy); |
613 | } | |
614 | /* We don't need to start here: it's not needed because backend | |
615 | * currently only stops on status change away from ok, | |
616 | * reset, vmstop and such. If we do add code to start here, | |
617 | * need to check vmstate, device state etc. */ | |
618 | return virtio_pci_set_host_notifier_internal(proxy, n, assign); | |
619 | } | |
620 | ||
621 | static void virtio_pci_vmstate_change(void *opaque, bool running) | |
622 | { | |
623 | VirtIOPCIProxy *proxy = opaque; | |
624 | ||
625 | if (running) { | |
89c473fd MT |
626 | /* Try to find out if the guest has bus master disabled, but is |
627 | in ready state. Then we have a buggy guest OS. */ | |
628 | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && | |
629 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
630 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
631 | } | |
25db9ebe | 632 | virtio_pci_start_ioeventfd(proxy); |
ade80dc8 | 633 | } else { |
25db9ebe | 634 | virtio_pci_stop_ioeventfd(proxy); |
ade80dc8 | 635 | } |
ade80dc8 MT |
636 | } |
637 | ||
53c25cea | 638 | static const VirtIOBindings virtio_pci_bindings = { |
ff24bd58 MT |
639 | .notify = virtio_pci_notify, |
640 | .save_config = virtio_pci_save_config, | |
641 | .load_config = virtio_pci_load_config, | |
642 | .save_queue = virtio_pci_save_queue, | |
643 | .load_queue = virtio_pci_load_queue, | |
6d74ca5a | 644 | .get_features = virtio_pci_get_features, |
5430a28f | 645 | .query_guest_notifiers = virtio_pci_query_guest_notifiers, |
ade80dc8 | 646 | .set_host_notifier = virtio_pci_set_host_notifier, |
54dd9321 | 647 | .set_guest_notifiers = virtio_pci_set_guest_notifiers, |
25db9ebe | 648 | .vmstate_change = virtio_pci_vmstate_change, |
53c25cea PB |
649 | }; |
650 | ||
befeac45 | 651 | void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev) |
53c25cea PB |
652 | { |
653 | uint8_t *config; | |
654 | uint32_t size; | |
655 | ||
656 | proxy->vdev = vdev; | |
657 | ||
658 | config = proxy->pci_dev.config; | |
53c25cea | 659 | |
e75ccf2c IY |
660 | if (proxy->class_code) { |
661 | pci_config_set_class(config, proxy->class_code); | |
662 | } | |
663 | pci_set_word(config + 0x2c, pci_get_word(config + PCI_VENDOR_ID)); | |
664 | pci_set_word(config + 0x2e, vdev->device_id); | |
53c25cea PB |
665 | config[0x3d] = 1; |
666 | ||
5a1fc5e8 | 667 | if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, 1, 0)) { |
aba800a3 MT |
668 | pci_register_bar(&proxy->pci_dev, 1, |
669 | msix_bar_size(&proxy->pci_dev), | |
0392a017 | 670 | PCI_BASE_ADDRESS_SPACE_MEMORY, |
aba800a3 | 671 | msix_mmio_map); |
aba800a3 MT |
672 | } else |
673 | vdev->nvectors = 0; | |
674 | ||
ed757e14 YV |
675 | proxy->pci_dev.config_write = virtio_write_config; |
676 | ||
aba800a3 | 677 | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
53c25cea PB |
678 | if (size & (size-1)) |
679 | size = 1 << qemu_fls(size); | |
680 | ||
0392a017 | 681 | pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO, |
53c25cea PB |
682 | virtio_map); |
683 | ||
25db9ebe SH |
684 | if (!kvm_has_many_ioeventfds()) { |
685 | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; | |
686 | } | |
687 | ||
53c25cea | 688 | virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
8172539d MT |
689 | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
690 | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; | |
691 | proxy->host_features = vdev->get_features(vdev, proxy->host_features); | |
53c25cea PB |
692 | } |
693 | ||
81a322d4 | 694 | static int virtio_blk_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
695 | { |
696 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
697 | VirtIODevice *vdev; | |
698 | ||
ab73ff29 GH |
699 | if (proxy->class_code != PCI_CLASS_STORAGE_SCSI && |
700 | proxy->class_code != PCI_CLASS_STORAGE_OTHER) | |
701 | proxy->class_code = PCI_CLASS_STORAGE_SCSI; | |
53c25cea | 702 | |
a8686a9b MA |
703 | vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block, |
704 | &proxy->block_serial); | |
ac0c14d7 MA |
705 | if (!vdev) { |
706 | return -1; | |
707 | } | |
177539e0 | 708 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 709 | virtio_init_pci(proxy, vdev); |
177539e0 GH |
710 | /* make the actual value visible */ |
711 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 712 | return 0; |
21d58b57 MM |
713 | } |
714 | ||
0f457d91 MT |
715 | static int virtio_exit_pci(PCIDevice *pci_dev) |
716 | { | |
717 | return msix_uninit(pci_dev); | |
718 | } | |
719 | ||
56a14938 GH |
720 | static int virtio_blk_exit_pci(PCIDevice *pci_dev) |
721 | { | |
722 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
723 | ||
25db9ebe | 724 | virtio_pci_stop_ioeventfd(proxy); |
9d0d3138 | 725 | virtio_blk_exit(proxy->vdev); |
f8b6cc00 | 726 | blockdev_mark_auto_del(proxy->block.bs); |
0f457d91 | 727 | return virtio_exit_pci(pci_dev); |
56a14938 GH |
728 | } |
729 | ||
98b19252 | 730 | static int virtio_serial_init_pci(PCIDevice *pci_dev) |
21d58b57 | 731 | { |
d6beee99 | 732 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
85c2c735 MM |
733 | VirtIODevice *vdev; |
734 | ||
d6beee99 GH |
735 | if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER && |
736 | proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ | |
737 | proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */ | |
738 | proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; | |
739 | ||
6b331efb | 740 | vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); |
25fe3654 AS |
741 | if (!vdev) { |
742 | return -1; | |
743 | } | |
573fb60c | 744 | vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
6b331efb | 745 | ? proxy->serial.max_virtserial_ports + 1 |
573fb60c | 746 | : proxy->nvectors; |
e75ccf2c | 747 | virtio_init_pci(proxy, vdev); |
a1829205 | 748 | proxy->nvectors = vdev->nvectors; |
81a322d4 | 749 | return 0; |
53c25cea PB |
750 | } |
751 | ||
8b53a865 AS |
752 | static int virtio_serial_exit_pci(PCIDevice *pci_dev) |
753 | { | |
754 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
755 | ||
32059220 | 756 | virtio_pci_stop_ioeventfd(proxy); |
8b53a865 AS |
757 | virtio_serial_exit(proxy->vdev); |
758 | return virtio_exit_pci(pci_dev); | |
759 | } | |
760 | ||
81a322d4 | 761 | static int virtio_net_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
762 | { |
763 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
764 | VirtIODevice *vdev; | |
765 | ||
f0c07c7c | 766 | vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); |
a1e0fea5 | 767 | |
97b15621 | 768 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 769 | virtio_init_pci(proxy, vdev); |
a1e0fea5 GH |
770 | |
771 | /* make the actual value visible */ | |
772 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 773 | return 0; |
53c25cea PB |
774 | } |
775 | ||
97b15621 GH |
776 | static int virtio_net_exit_pci(PCIDevice *pci_dev) |
777 | { | |
778 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
779 | ||
25db9ebe | 780 | virtio_pci_stop_ioeventfd(proxy); |
97b15621 GH |
781 | virtio_net_exit(proxy->vdev); |
782 | return virtio_exit_pci(pci_dev); | |
783 | } | |
784 | ||
81a322d4 | 785 | static int virtio_balloon_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
786 | { |
787 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
788 | VirtIODevice *vdev; | |
789 | ||
790 | vdev = virtio_balloon_init(&pci_dev->qdev); | |
f76f6655 AS |
791 | if (!vdev) { |
792 | return -1; | |
793 | } | |
e75ccf2c | 794 | virtio_init_pci(proxy, vdev); |
81a322d4 | 795 | return 0; |
53c25cea PB |
796 | } |
797 | ||
855d7e25 AS |
798 | static int virtio_balloon_exit_pci(PCIDevice *pci_dev) |
799 | { | |
800 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
801 | ||
802 | virtio_pci_stop_ioeventfd(proxy); | |
803 | virtio_balloon_exit(proxy->vdev); | |
804 | return virtio_exit_pci(pci_dev); | |
805 | } | |
806 | ||
0aab0d3a GH |
807 | static PCIDeviceInfo virtio_info[] = { |
808 | { | |
809 | .qdev.name = "virtio-blk-pci", | |
779206de | 810 | .qdev.alias = "virtio-blk", |
0aab0d3a GH |
811 | .qdev.size = sizeof(VirtIOPCIProxy), |
812 | .init = virtio_blk_init_pci, | |
56a14938 | 813 | .exit = virtio_blk_exit_pci, |
e75ccf2c IY |
814 | .vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET, |
815 | .device_id = PCI_DEVICE_ID_VIRTIO_BLOCK, | |
816 | .revision = VIRTIO_PCI_ABI_VERSION, | |
817 | .class_id = PCI_CLASS_STORAGE_SCSI, | |
ab73ff29 | 818 | .qdev.props = (Property[]) { |
72c61d0b | 819 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
428c149b | 820 | DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block), |
a8686a9b | 821 | DEFINE_PROP_STRING("serial", VirtIOPCIProxy, block_serial), |
25db9ebe SH |
822 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, |
823 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
177539e0 | 824 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
8172539d | 825 | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), |
72c61d0b | 826 | DEFINE_PROP_END_OF_LIST(), |
ab73ff29 | 827 | }, |
e489030d | 828 | .qdev.reset = virtio_pci_reset, |
0aab0d3a | 829 | },{ |
a1e0fea5 | 830 | .qdev.name = "virtio-net-pci", |
29f82b37 | 831 | .qdev.alias = "virtio-net", |
a1e0fea5 GH |
832 | .qdev.size = sizeof(VirtIOPCIProxy), |
833 | .init = virtio_net_init_pci, | |
97b15621 | 834 | .exit = virtio_net_exit_pci, |
5ee8ad71 | 835 | .romfile = "pxe-virtio.rom", |
e75ccf2c IY |
836 | .vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET, |
837 | .device_id = PCI_DEVICE_ID_VIRTIO_NET, | |
838 | .revision = VIRTIO_PCI_ABI_VERSION, | |
839 | .class_id = PCI_CLASS_NETWORK_ETHERNET, | |
a1e0fea5 | 840 | .qdev.props = (Property[]) { |
25db9ebe SH |
841 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, |
842 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), | |
97b15621 | 843 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), |
8172539d | 844 | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), |
97b15621 | 845 | DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), |
f0c07c7c AW |
846 | DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, |
847 | net.txtimer, TX_TIMER_INTERVAL), | |
e3f30488 AW |
848 | DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, |
849 | net.txburst, TX_BURST), | |
a697a334 | 850 | DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx), |
72c61d0b | 851 | DEFINE_PROP_END_OF_LIST(), |
a1e0fea5 | 852 | }, |
e489030d | 853 | .qdev.reset = virtio_pci_reset, |
0aab0d3a | 854 | },{ |
98b19252 AS |
855 | .qdev.name = "virtio-serial-pci", |
856 | .qdev.alias = "virtio-serial", | |
0aab0d3a | 857 | .qdev.size = sizeof(VirtIOPCIProxy), |
98b19252 | 858 | .init = virtio_serial_init_pci, |
8b53a865 | 859 | .exit = virtio_serial_exit_pci, |
e75ccf2c IY |
860 | .vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET, |
861 | .device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE, | |
862 | .revision = VIRTIO_PCI_ABI_VERSION, | |
863 | .class_id = PCI_CLASS_COMMUNICATION_OTHER, | |
d6beee99 | 864 | .qdev.props = (Property[]) { |
32059220 AS |
865 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, |
866 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
573fb60c AS |
867 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, |
868 | DEV_NVECTORS_UNSPECIFIED), | |
72c61d0b | 869 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
8172539d | 870 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
6b331efb AS |
871 | DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, |
872 | serial.max_virtserial_ports, 31), | |
72c61d0b | 873 | DEFINE_PROP_END_OF_LIST(), |
d6beee99 | 874 | }, |
e489030d | 875 | .qdev.reset = virtio_pci_reset, |
0aab0d3a GH |
876 | },{ |
877 | .qdev.name = "virtio-balloon-pci", | |
29f82b37 | 878 | .qdev.alias = "virtio-balloon", |
0aab0d3a GH |
879 | .qdev.size = sizeof(VirtIOPCIProxy), |
880 | .init = virtio_balloon_init_pci, | |
855d7e25 | 881 | .exit = virtio_balloon_exit_pci, |
e75ccf2c IY |
882 | .vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET, |
883 | .device_id = PCI_DEVICE_ID_VIRTIO_BALLOON, | |
884 | .revision = VIRTIO_PCI_ABI_VERSION, | |
885 | .class_id = PCI_CLASS_MEMORY_RAM, | |
8172539d MT |
886 | .qdev.props = (Property[]) { |
887 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
888 | DEFINE_PROP_END_OF_LIST(), | |
889 | }, | |
e489030d | 890 | .qdev.reset = virtio_pci_reset, |
0aab0d3a GH |
891 | },{ |
892 | /* end of list */ | |
893 | } | |
894 | }; | |
895 | ||
53c25cea PB |
896 | static void virtio_pci_register_devices(void) |
897 | { | |
0aab0d3a | 898 | pci_qdev_register_many(virtio_info); |
53c25cea PB |
899 | } |
900 | ||
901 | device_init(virtio_pci_register_devices) |