]>
Commit | Line | Data |
---|---|---|
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 <inttypes.h> | |
19 | ||
20 | #include "virtio.h" | |
21 | #include "virtio-blk.h" | |
22 | #include "virtio-net.h" | |
23 | #include "virtio-serial.h" | |
24 | #include "virtio-scsi.h" | |
25 | #include "pci.h" | |
26 | #include "qemu-error.h" | |
27 | #include "msi.h" | |
28 | #include "msix.h" | |
29 | #include "net.h" | |
30 | #include "loader.h" | |
31 | #include "kvm.h" | |
32 | #include "blockdev.h" | |
33 | #include "virtio-pci.h" | |
34 | #include "range.h" | |
35 | ||
36 | /* from Linux's linux/virtio_pci.h */ | |
37 | ||
38 | /* A 32-bit r/o bitmask of the features supported by the host */ | |
39 | #define VIRTIO_PCI_HOST_FEATURES 0 | |
40 | ||
41 | /* A 32-bit r/w bitmask of features activated by the guest */ | |
42 | #define VIRTIO_PCI_GUEST_FEATURES 4 | |
43 | ||
44 | /* A 32-bit r/w PFN for the currently selected queue */ | |
45 | #define VIRTIO_PCI_QUEUE_PFN 8 | |
46 | ||
47 | /* A 16-bit r/o queue size for the currently selected queue */ | |
48 | #define VIRTIO_PCI_QUEUE_NUM 12 | |
49 | ||
50 | /* A 16-bit r/w queue selector */ | |
51 | #define VIRTIO_PCI_QUEUE_SEL 14 | |
52 | ||
53 | /* A 16-bit r/w queue notifier */ | |
54 | #define VIRTIO_PCI_QUEUE_NOTIFY 16 | |
55 | ||
56 | /* An 8-bit device status register. */ | |
57 | #define VIRTIO_PCI_STATUS 18 | |
58 | ||
59 | /* An 8-bit r/o interrupt status register. Reading the value will return the | |
60 | * current contents of the ISR and will also clear it. This is effectively | |
61 | * a read-and-acknowledge. */ | |
62 | #define VIRTIO_PCI_ISR 19 | |
63 | ||
64 | /* MSI-X registers: only enabled if MSI-X is enabled. */ | |
65 | /* A 16-bit vector for configuration changes. */ | |
66 | #define VIRTIO_MSI_CONFIG_VECTOR 20 | |
67 | /* A 16-bit vector for selected queue notifications. */ | |
68 | #define VIRTIO_MSI_QUEUE_VECTOR 22 | |
69 | ||
70 | /* Config space size */ | |
71 | #define VIRTIO_PCI_CONFIG_NOMSI 20 | |
72 | #define VIRTIO_PCI_CONFIG_MSI 24 | |
73 | #define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \ | |
74 | VIRTIO_PCI_CONFIG_MSI : \ | |
75 | VIRTIO_PCI_CONFIG_NOMSI) | |
76 | ||
77 | /* The remaining space is defined by each driver as the per-driver | |
78 | * configuration space */ | |
79 | #define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \ | |
80 | VIRTIO_PCI_CONFIG_MSI : \ | |
81 | VIRTIO_PCI_CONFIG_NOMSI) | |
82 | ||
83 | /* How many bits to shift physical queue address written to QUEUE_PFN. | |
84 | * 12 is historical, and due to x86 page size. */ | |
85 | #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 | |
86 | ||
87 | /* Flags track per-device state like workarounds for quirks in older guests. */ | |
88 | #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) | |
89 | ||
90 | /* QEMU doesn't strictly need write barriers since everything runs in | |
91 | * lock-step. We'll leave the calls to wmb() in though to make it obvious for | |
92 | * KVM or if kqemu gets SMP support. | |
93 | */ | |
94 | #define wmb() do { } while (0) | |
95 | ||
96 | /* HACK for virtio to determine if it's running a big endian guest */ | |
97 | bool virtio_is_big_endian(void); | |
98 | ||
99 | /* virtio device */ | |
100 | ||
101 | static void virtio_pci_notify(void *opaque, uint16_t vector) | |
102 | { | |
103 | VirtIOPCIProxy *proxy = opaque; | |
104 | if (msix_enabled(&proxy->pci_dev)) | |
105 | msix_notify(&proxy->pci_dev, vector); | |
106 | else | |
107 | qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); | |
108 | } | |
109 | ||
110 | static void virtio_pci_save_config(void * opaque, QEMUFile *f) | |
111 | { | |
112 | VirtIOPCIProxy *proxy = opaque; | |
113 | pci_device_save(&proxy->pci_dev, f); | |
114 | msix_save(&proxy->pci_dev, f); | |
115 | if (msix_present(&proxy->pci_dev)) | |
116 | qemu_put_be16(f, proxy->vdev->config_vector); | |
117 | } | |
118 | ||
119 | static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f) | |
120 | { | |
121 | VirtIOPCIProxy *proxy = opaque; | |
122 | if (msix_present(&proxy->pci_dev)) | |
123 | qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); | |
124 | } | |
125 | ||
126 | static int virtio_pci_load_config(void * opaque, QEMUFile *f) | |
127 | { | |
128 | VirtIOPCIProxy *proxy = opaque; | |
129 | int ret; | |
130 | ret = pci_device_load(&proxy->pci_dev, f); | |
131 | if (ret) { | |
132 | return ret; | |
133 | } | |
134 | msix_load(&proxy->pci_dev, f); | |
135 | if (msix_present(&proxy->pci_dev)) { | |
136 | qemu_get_be16s(f, &proxy->vdev->config_vector); | |
137 | } else { | |
138 | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; | |
139 | } | |
140 | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { | |
141 | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); | |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) | |
147 | { | |
148 | VirtIOPCIProxy *proxy = opaque; | |
149 | uint16_t vector; | |
150 | if (msix_present(&proxy->pci_dev)) { | |
151 | qemu_get_be16s(f, &vector); | |
152 | } else { | |
153 | vector = VIRTIO_NO_VECTOR; | |
154 | } | |
155 | virtio_queue_set_vector(proxy->vdev, n, vector); | |
156 | if (vector != VIRTIO_NO_VECTOR) { | |
157 | return msix_vector_use(&proxy->pci_dev, vector); | |
158 | } | |
159 | return 0; | |
160 | } | |
161 | ||
162 | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, | |
163 | int n, bool assign) | |
164 | { | |
165 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
166 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
167 | int r = 0; | |
168 | ||
169 | if (assign) { | |
170 | r = event_notifier_init(notifier, 1); | |
171 | if (r < 0) { | |
172 | error_report("%s: unable to init event notifier: %d", | |
173 | __func__, r); | |
174 | return r; | |
175 | } | |
176 | memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, | |
177 | true, n, event_notifier_get_fd(notifier)); | |
178 | } else { | |
179 | memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, | |
180 | true, n, event_notifier_get_fd(notifier)); | |
181 | /* Handle the race condition where the guest kicked and we deassigned | |
182 | * before we got around to handling the kick. | |
183 | */ | |
184 | if (event_notifier_test_and_clear(notifier)) { | |
185 | virtio_queue_notify_vq(vq); | |
186 | } | |
187 | ||
188 | event_notifier_cleanup(notifier); | |
189 | } | |
190 | return r; | |
191 | } | |
192 | ||
193 | static void virtio_pci_host_notifier_read(void *opaque) | |
194 | { | |
195 | VirtQueue *vq = opaque; | |
196 | EventNotifier *n = virtio_queue_get_host_notifier(vq); | |
197 | if (event_notifier_test_and_clear(n)) { | |
198 | virtio_queue_notify_vq(vq); | |
199 | } | |
200 | } | |
201 | ||
202 | static void virtio_pci_set_host_notifier_fd_handler(VirtIOPCIProxy *proxy, | |
203 | int n, bool assign) | |
204 | { | |
205 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
206 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
207 | if (assign) { | |
208 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
209 | virtio_pci_host_notifier_read, NULL, vq); | |
210 | } else { | |
211 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
212 | NULL, NULL, NULL); | |
213 | } | |
214 | } | |
215 | ||
216 | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) | |
217 | { | |
218 | int n, r; | |
219 | ||
220 | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || | |
221 | proxy->ioeventfd_disabled || | |
222 | proxy->ioeventfd_started) { | |
223 | return; | |
224 | } | |
225 | ||
226 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
227 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
228 | continue; | |
229 | } | |
230 | ||
231 | r = virtio_pci_set_host_notifier_internal(proxy, n, true); | |
232 | if (r < 0) { | |
233 | goto assign_error; | |
234 | } | |
235 | ||
236 | virtio_pci_set_host_notifier_fd_handler(proxy, n, true); | |
237 | } | |
238 | proxy->ioeventfd_started = true; | |
239 | return; | |
240 | ||
241 | assign_error: | |
242 | while (--n >= 0) { | |
243 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
244 | continue; | |
245 | } | |
246 | ||
247 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
248 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); | |
249 | assert(r >= 0); | |
250 | } | |
251 | proxy->ioeventfd_started = false; | |
252 | error_report("%s: failed. Fallback to a userspace (slower).", __func__); | |
253 | } | |
254 | ||
255 | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) | |
256 | { | |
257 | int r; | |
258 | int n; | |
259 | ||
260 | if (!proxy->ioeventfd_started) { | |
261 | return; | |
262 | } | |
263 | ||
264 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
265 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
266 | continue; | |
267 | } | |
268 | ||
269 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
270 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); | |
271 | assert(r >= 0); | |
272 | } | |
273 | proxy->ioeventfd_started = false; | |
274 | } | |
275 | ||
276 | void virtio_pci_reset(DeviceState *d) | |
277 | { | |
278 | VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); | |
279 | virtio_pci_stop_ioeventfd(proxy); | |
280 | virtio_reset(proxy->vdev); | |
281 | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
282 | } | |
283 | ||
284 | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) | |
285 | { | |
286 | VirtIOPCIProxy *proxy = opaque; | |
287 | VirtIODevice *vdev = proxy->vdev; | |
288 | target_phys_addr_t pa; | |
289 | ||
290 | switch (addr) { | |
291 | case VIRTIO_PCI_GUEST_FEATURES: | |
292 | /* Guest does not negotiate properly? We have to assume nothing. */ | |
293 | if (val & (1 << VIRTIO_F_BAD_FEATURE)) { | |
294 | val = vdev->bad_features ? vdev->bad_features(vdev) : 0; | |
295 | } | |
296 | virtio_set_features(vdev, val); | |
297 | break; | |
298 | case VIRTIO_PCI_QUEUE_PFN: | |
299 | pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; | |
300 | if (pa == 0) { | |
301 | virtio_pci_stop_ioeventfd(proxy); | |
302 | virtio_reset(proxy->vdev); | |
303 | msix_unuse_all_vectors(&proxy->pci_dev); | |
304 | } | |
305 | else | |
306 | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); | |
307 | break; | |
308 | case VIRTIO_PCI_QUEUE_SEL: | |
309 | if (val < VIRTIO_PCI_QUEUE_MAX) | |
310 | vdev->queue_sel = val; | |
311 | break; | |
312 | case VIRTIO_PCI_QUEUE_NOTIFY: | |
313 | if (val < VIRTIO_PCI_QUEUE_MAX) { | |
314 | virtio_queue_notify(vdev, val); | |
315 | } | |
316 | break; | |
317 | case VIRTIO_PCI_STATUS: | |
318 | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) { | |
319 | virtio_pci_stop_ioeventfd(proxy); | |
320 | } | |
321 | ||
322 | virtio_set_status(vdev, val & 0xFF); | |
323 | ||
324 | if (val & VIRTIO_CONFIG_S_DRIVER_OK) { | |
325 | virtio_pci_start_ioeventfd(proxy); | |
326 | } | |
327 | ||
328 | if (vdev->status == 0) { | |
329 | virtio_reset(proxy->vdev); | |
330 | msix_unuse_all_vectors(&proxy->pci_dev); | |
331 | } | |
332 | ||
333 | /* Linux before 2.6.34 sets the device as OK without enabling | |
334 | the PCI device bus master bit. In this case we need to disable | |
335 | some safety checks. */ | |
336 | if ((val & VIRTIO_CONFIG_S_DRIVER_OK) && | |
337 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
338 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
339 | } | |
340 | break; | |
341 | case VIRTIO_MSI_CONFIG_VECTOR: | |
342 | msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); | |
343 | /* Make it possible for guest to discover an error took place. */ | |
344 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
345 | val = VIRTIO_NO_VECTOR; | |
346 | vdev->config_vector = val; | |
347 | break; | |
348 | case VIRTIO_MSI_QUEUE_VECTOR: | |
349 | msix_vector_unuse(&proxy->pci_dev, | |
350 | virtio_queue_vector(vdev, vdev->queue_sel)); | |
351 | /* Make it possible for guest to discover an error took place. */ | |
352 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
353 | val = VIRTIO_NO_VECTOR; | |
354 | virtio_queue_set_vector(vdev, vdev->queue_sel, val); | |
355 | break; | |
356 | default: | |
357 | error_report("%s: unexpected address 0x%x value 0x%x", | |
358 | __func__, addr, val); | |
359 | break; | |
360 | } | |
361 | } | |
362 | ||
363 | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) | |
364 | { | |
365 | VirtIODevice *vdev = proxy->vdev; | |
366 | uint32_t ret = 0xFFFFFFFF; | |
367 | ||
368 | switch (addr) { | |
369 | case VIRTIO_PCI_HOST_FEATURES: | |
370 | ret = proxy->host_features; | |
371 | break; | |
372 | case VIRTIO_PCI_GUEST_FEATURES: | |
373 | ret = vdev->guest_features; | |
374 | break; | |
375 | case VIRTIO_PCI_QUEUE_PFN: | |
376 | ret = virtio_queue_get_addr(vdev, vdev->queue_sel) | |
377 | >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; | |
378 | break; | |
379 | case VIRTIO_PCI_QUEUE_NUM: | |
380 | ret = virtio_queue_get_num(vdev, vdev->queue_sel); | |
381 | break; | |
382 | case VIRTIO_PCI_QUEUE_SEL: | |
383 | ret = vdev->queue_sel; | |
384 | break; | |
385 | case VIRTIO_PCI_STATUS: | |
386 | ret = vdev->status; | |
387 | break; | |
388 | case VIRTIO_PCI_ISR: | |
389 | /* reading from the ISR also clears it. */ | |
390 | ret = vdev->isr; | |
391 | vdev->isr = 0; | |
392 | qemu_set_irq(proxy->pci_dev.irq[0], 0); | |
393 | break; | |
394 | case VIRTIO_MSI_CONFIG_VECTOR: | |
395 | ret = vdev->config_vector; | |
396 | break; | |
397 | case VIRTIO_MSI_QUEUE_VECTOR: | |
398 | ret = virtio_queue_vector(vdev, vdev->queue_sel); | |
399 | break; | |
400 | default: | |
401 | break; | |
402 | } | |
403 | ||
404 | return ret; | |
405 | } | |
406 | ||
407 | static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr) | |
408 | { | |
409 | VirtIOPCIProxy *proxy = opaque; | |
410 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); | |
411 | if (addr < config) | |
412 | return virtio_ioport_read(proxy, addr); | |
413 | addr -= config; | |
414 | return virtio_config_readb(proxy->vdev, addr); | |
415 | } | |
416 | ||
417 | static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr) | |
418 | { | |
419 | VirtIOPCIProxy *proxy = opaque; | |
420 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); | |
421 | uint16_t val; | |
422 | if (addr < config) | |
423 | return virtio_ioport_read(proxy, addr); | |
424 | addr -= config; | |
425 | val = virtio_config_readw(proxy->vdev, addr); | |
426 | if (virtio_is_big_endian()) { | |
427 | /* | |
428 | * virtio is odd, ioports are LE but config space is target native | |
429 | * endian. However, in qemu, all PIO is LE, so we need to re-swap | |
430 | * on BE targets | |
431 | */ | |
432 | val = bswap16(val); | |
433 | } | |
434 | return val; | |
435 | } | |
436 | ||
437 | static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) | |
438 | { | |
439 | VirtIOPCIProxy *proxy = opaque; | |
440 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); | |
441 | uint32_t val; | |
442 | if (addr < config) | |
443 | return virtio_ioport_read(proxy, addr); | |
444 | addr -= config; | |
445 | val = virtio_config_readl(proxy->vdev, addr); | |
446 | if (virtio_is_big_endian()) { | |
447 | val = bswap32(val); | |
448 | } | |
449 | return val; | |
450 | } | |
451 | ||
452 | static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) | |
453 | { | |
454 | VirtIOPCIProxy *proxy = opaque; | |
455 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); | |
456 | if (addr < config) { | |
457 | virtio_ioport_write(proxy, addr, val); | |
458 | return; | |
459 | } | |
460 | addr -= config; | |
461 | virtio_config_writeb(proxy->vdev, addr, val); | |
462 | } | |
463 | ||
464 | static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val) | |
465 | { | |
466 | VirtIOPCIProxy *proxy = opaque; | |
467 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); | |
468 | if (addr < config) { | |
469 | virtio_ioport_write(proxy, addr, val); | |
470 | return; | |
471 | } | |
472 | addr -= config; | |
473 | if (virtio_is_big_endian()) { | |
474 | val = bswap16(val); | |
475 | } | |
476 | virtio_config_writew(proxy->vdev, addr, val); | |
477 | } | |
478 | ||
479 | static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val) | |
480 | { | |
481 | VirtIOPCIProxy *proxy = opaque; | |
482 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); | |
483 | if (addr < config) { | |
484 | virtio_ioport_write(proxy, addr, val); | |
485 | return; | |
486 | } | |
487 | addr -= config; | |
488 | if (virtio_is_big_endian()) { | |
489 | val = bswap32(val); | |
490 | } | |
491 | virtio_config_writel(proxy->vdev, addr, val); | |
492 | } | |
493 | ||
494 | static const MemoryRegionPortio virtio_portio[] = { | |
495 | { 0, 0x10000, 1, .write = virtio_pci_config_writeb, }, | |
496 | { 0, 0x10000, 2, .write = virtio_pci_config_writew, }, | |
497 | { 0, 0x10000, 4, .write = virtio_pci_config_writel, }, | |
498 | { 0, 0x10000, 1, .read = virtio_pci_config_readb, }, | |
499 | { 0, 0x10000, 2, .read = virtio_pci_config_readw, }, | |
500 | { 0, 0x10000, 4, .read = virtio_pci_config_readl, }, | |
501 | PORTIO_END_OF_LIST() | |
502 | }; | |
503 | ||
504 | static const MemoryRegionOps virtio_pci_config_ops = { | |
505 | .old_portio = virtio_portio, | |
506 | .endianness = DEVICE_LITTLE_ENDIAN, | |
507 | }; | |
508 | ||
509 | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, | |
510 | uint32_t val, int len) | |
511 | { | |
512 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
513 | ||
514 | pci_default_write_config(pci_dev, address, val, len); | |
515 | ||
516 | if (range_covers_byte(address, len, PCI_COMMAND) && | |
517 | !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && | |
518 | !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { | |
519 | virtio_pci_stop_ioeventfd(proxy); | |
520 | virtio_set_status(proxy->vdev, | |
521 | proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); | |
522 | } | |
523 | ||
524 | msix_write_config(pci_dev, address, val, len); | |
525 | } | |
526 | ||
527 | static unsigned virtio_pci_get_features(void *opaque) | |
528 | { | |
529 | VirtIOPCIProxy *proxy = opaque; | |
530 | return proxy->host_features; | |
531 | } | |
532 | ||
533 | static void virtio_pci_guest_notifier_read(void *opaque) | |
534 | { | |
535 | VirtQueue *vq = opaque; | |
536 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); | |
537 | if (event_notifier_test_and_clear(n)) { | |
538 | virtio_irq(vq); | |
539 | } | |
540 | } | |
541 | ||
542 | static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, | |
543 | unsigned int queue_no, | |
544 | unsigned int vector, | |
545 | MSIMessage msg) | |
546 | { | |
547 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
548 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; | |
549 | int fd, ret; | |
550 | ||
551 | fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vq)); | |
552 | ||
553 | if (irqfd->users == 0) { | |
554 | ret = kvm_irqchip_add_msi_route(kvm_state, msg); | |
555 | if (ret < 0) { | |
556 | return ret; | |
557 | } | |
558 | irqfd->virq = ret; | |
559 | } | |
560 | irqfd->users++; | |
561 | ||
562 | ret = kvm_irqchip_add_irqfd(kvm_state, fd, irqfd->virq); | |
563 | if (ret < 0) { | |
564 | if (--irqfd->users == 0) { | |
565 | kvm_irqchip_release_virq(kvm_state, irqfd->virq); | |
566 | } | |
567 | return ret; | |
568 | } | |
569 | ||
570 | qemu_set_fd_handler(fd, NULL, NULL, NULL); | |
571 | ||
572 | return 0; | |
573 | } | |
574 | ||
575 | static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, | |
576 | unsigned int queue_no, | |
577 | unsigned int vector) | |
578 | { | |
579 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
580 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; | |
581 | int fd, ret; | |
582 | ||
583 | fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vq)); | |
584 | ||
585 | ret = kvm_irqchip_remove_irqfd(kvm_state, fd, irqfd->virq); | |
586 | assert(ret == 0); | |
587 | ||
588 | if (--irqfd->users == 0) { | |
589 | kvm_irqchip_release_virq(kvm_state, irqfd->virq); | |
590 | } | |
591 | ||
592 | qemu_set_fd_handler(fd, virtio_pci_guest_notifier_read, NULL, vq); | |
593 | } | |
594 | ||
595 | static int kvm_virtio_pci_vector_use(PCIDevice *dev, unsigned vector, | |
596 | MSIMessage msg) | |
597 | { | |
598 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
599 | VirtIODevice *vdev = proxy->vdev; | |
600 | int ret, queue_no; | |
601 | ||
602 | for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { | |
603 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
604 | break; | |
605 | } | |
606 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
607 | continue; | |
608 | } | |
609 | ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); | |
610 | if (ret < 0) { | |
611 | goto undo; | |
612 | } | |
613 | } | |
614 | return 0; | |
615 | ||
616 | undo: | |
617 | while (--queue_no >= 0) { | |
618 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
619 | continue; | |
620 | } | |
621 | kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); | |
622 | } | |
623 | return ret; | |
624 | } | |
625 | ||
626 | static void kvm_virtio_pci_vector_release(PCIDevice *dev, unsigned vector) | |
627 | { | |
628 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
629 | VirtIODevice *vdev = proxy->vdev; | |
630 | int queue_no; | |
631 | ||
632 | for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { | |
633 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
634 | break; | |
635 | } | |
636 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
637 | continue; | |
638 | } | |
639 | kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); | |
640 | } | |
641 | } | |
642 | ||
643 | static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) | |
644 | { | |
645 | VirtIOPCIProxy *proxy = opaque; | |
646 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
647 | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); | |
648 | ||
649 | if (assign) { | |
650 | int r = event_notifier_init(notifier, 0); | |
651 | if (r < 0) { | |
652 | return r; | |
653 | } | |
654 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
655 | virtio_pci_guest_notifier_read, NULL, vq); | |
656 | } else { | |
657 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
658 | NULL, NULL, NULL); | |
659 | /* Test and clear notifier before closing it, | |
660 | * in case poll callback didn't have time to run. */ | |
661 | virtio_pci_guest_notifier_read(vq); | |
662 | event_notifier_cleanup(notifier); | |
663 | } | |
664 | ||
665 | return 0; | |
666 | } | |
667 | ||
668 | static bool virtio_pci_query_guest_notifiers(void *opaque) | |
669 | { | |
670 | VirtIOPCIProxy *proxy = opaque; | |
671 | return msix_enabled(&proxy->pci_dev); | |
672 | } | |
673 | ||
674 | static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) | |
675 | { | |
676 | VirtIOPCIProxy *proxy = opaque; | |
677 | VirtIODevice *vdev = proxy->vdev; | |
678 | int r, n; | |
679 | ||
680 | /* Must unset vector notifier while guest notifier is still assigned */ | |
681 | if (kvm_irqchip_in_kernel() && !assign) { | |
682 | msix_unset_vector_notifiers(&proxy->pci_dev); | |
683 | g_free(proxy->vector_irqfd); | |
684 | proxy->vector_irqfd = NULL; | |
685 | } | |
686 | ||
687 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
688 | if (!virtio_queue_get_num(vdev, n)) { | |
689 | break; | |
690 | } | |
691 | ||
692 | r = virtio_pci_set_guest_notifier(opaque, n, assign); | |
693 | if (r < 0) { | |
694 | goto assign_error; | |
695 | } | |
696 | } | |
697 | ||
698 | /* Must set vector notifier after guest notifier has been assigned */ | |
699 | if (kvm_irqchip_in_kernel() && assign) { | |
700 | proxy->vector_irqfd = | |
701 | g_malloc0(sizeof(*proxy->vector_irqfd) * | |
702 | msix_nr_vectors_allocated(&proxy->pci_dev)); | |
703 | r = msix_set_vector_notifiers(&proxy->pci_dev, | |
704 | kvm_virtio_pci_vector_use, | |
705 | kvm_virtio_pci_vector_release); | |
706 | if (r < 0) { | |
707 | goto assign_error; | |
708 | } | |
709 | } | |
710 | ||
711 | return 0; | |
712 | ||
713 | assign_error: | |
714 | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ | |
715 | assert(assign); | |
716 | while (--n >= 0) { | |
717 | virtio_pci_set_guest_notifier(opaque, n, !assign); | |
718 | } | |
719 | return r; | |
720 | } | |
721 | ||
722 | static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) | |
723 | { | |
724 | VirtIOPCIProxy *proxy = opaque; | |
725 | ||
726 | /* Stop using ioeventfd for virtqueue kick if the device starts using host | |
727 | * notifiers. This makes it easy to avoid stepping on each others' toes. | |
728 | */ | |
729 | proxy->ioeventfd_disabled = assign; | |
730 | if (assign) { | |
731 | virtio_pci_stop_ioeventfd(proxy); | |
732 | } | |
733 | /* We don't need to start here: it's not needed because backend | |
734 | * currently only stops on status change away from ok, | |
735 | * reset, vmstop and such. If we do add code to start here, | |
736 | * need to check vmstate, device state etc. */ | |
737 | return virtio_pci_set_host_notifier_internal(proxy, n, assign); | |
738 | } | |
739 | ||
740 | static void virtio_pci_vmstate_change(void *opaque, bool running) | |
741 | { | |
742 | VirtIOPCIProxy *proxy = opaque; | |
743 | ||
744 | if (running) { | |
745 | /* Try to find out if the guest has bus master disabled, but is | |
746 | in ready state. Then we have a buggy guest OS. */ | |
747 | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && | |
748 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
749 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
750 | } | |
751 | virtio_pci_start_ioeventfd(proxy); | |
752 | } else { | |
753 | virtio_pci_stop_ioeventfd(proxy); | |
754 | } | |
755 | } | |
756 | ||
757 | static const VirtIOBindings virtio_pci_bindings = { | |
758 | .notify = virtio_pci_notify, | |
759 | .save_config = virtio_pci_save_config, | |
760 | .load_config = virtio_pci_load_config, | |
761 | .save_queue = virtio_pci_save_queue, | |
762 | .load_queue = virtio_pci_load_queue, | |
763 | .get_features = virtio_pci_get_features, | |
764 | .query_guest_notifiers = virtio_pci_query_guest_notifiers, | |
765 | .set_host_notifier = virtio_pci_set_host_notifier, | |
766 | .set_guest_notifiers = virtio_pci_set_guest_notifiers, | |
767 | .vmstate_change = virtio_pci_vmstate_change, | |
768 | }; | |
769 | ||
770 | void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev) | |
771 | { | |
772 | uint8_t *config; | |
773 | uint32_t size; | |
774 | ||
775 | proxy->vdev = vdev; | |
776 | ||
777 | config = proxy->pci_dev.config; | |
778 | ||
779 | if (proxy->class_code) { | |
780 | pci_config_set_class(config, proxy->class_code); | |
781 | } | |
782 | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, | |
783 | pci_get_word(config + PCI_VENDOR_ID)); | |
784 | pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); | |
785 | config[PCI_INTERRUPT_PIN] = 1; | |
786 | ||
787 | memory_region_init(&proxy->msix_bar, "virtio-msix", 4096); | |
788 | if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, | |
789 | &proxy->msix_bar, 1, 0)) { | |
790 | pci_register_bar(&proxy->pci_dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, | |
791 | &proxy->msix_bar); | |
792 | } else | |
793 | vdev->nvectors = 0; | |
794 | ||
795 | proxy->pci_dev.config_write = virtio_write_config; | |
796 | ||
797 | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; | |
798 | if (size & (size-1)) | |
799 | size = 1 << qemu_fls(size); | |
800 | ||
801 | memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, | |
802 | "virtio-pci", size); | |
803 | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, | |
804 | &proxy->bar); | |
805 | ||
806 | if (!kvm_has_many_ioeventfds()) { | |
807 | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; | |
808 | } | |
809 | ||
810 | virtio_bind_device(vdev, &virtio_pci_bindings, proxy); | |
811 | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; | |
812 | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; | |
813 | proxy->host_features = vdev->get_features(vdev, proxy->host_features); | |
814 | } | |
815 | ||
816 | static int virtio_blk_init_pci(PCIDevice *pci_dev) | |
817 | { | |
818 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
819 | VirtIODevice *vdev; | |
820 | ||
821 | if (proxy->class_code != PCI_CLASS_STORAGE_SCSI && | |
822 | proxy->class_code != PCI_CLASS_STORAGE_OTHER) | |
823 | proxy->class_code = PCI_CLASS_STORAGE_SCSI; | |
824 | ||
825 | vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk); | |
826 | if (!vdev) { | |
827 | return -1; | |
828 | } | |
829 | vdev->nvectors = proxy->nvectors; | |
830 | virtio_init_pci(proxy, vdev); | |
831 | /* make the actual value visible */ | |
832 | proxy->nvectors = vdev->nvectors; | |
833 | return 0; | |
834 | } | |
835 | ||
836 | static int virtio_exit_pci(PCIDevice *pci_dev) | |
837 | { | |
838 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
839 | int r; | |
840 | ||
841 | memory_region_destroy(&proxy->bar); | |
842 | r = msix_uninit(pci_dev, &proxy->msix_bar); | |
843 | memory_region_destroy(&proxy->msix_bar); | |
844 | return r; | |
845 | } | |
846 | ||
847 | static int virtio_blk_exit_pci(PCIDevice *pci_dev) | |
848 | { | |
849 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
850 | ||
851 | virtio_pci_stop_ioeventfd(proxy); | |
852 | virtio_blk_exit(proxy->vdev); | |
853 | return virtio_exit_pci(pci_dev); | |
854 | } | |
855 | ||
856 | static int virtio_serial_init_pci(PCIDevice *pci_dev) | |
857 | { | |
858 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
859 | VirtIODevice *vdev; | |
860 | ||
861 | if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER && | |
862 | proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ | |
863 | proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */ | |
864 | proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; | |
865 | ||
866 | vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); | |
867 | if (!vdev) { | |
868 | return -1; | |
869 | } | |
870 | vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED | |
871 | ? proxy->serial.max_virtserial_ports + 1 | |
872 | : proxy->nvectors; | |
873 | virtio_init_pci(proxy, vdev); | |
874 | proxy->nvectors = vdev->nvectors; | |
875 | return 0; | |
876 | } | |
877 | ||
878 | static int virtio_serial_exit_pci(PCIDevice *pci_dev) | |
879 | { | |
880 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
881 | ||
882 | virtio_pci_stop_ioeventfd(proxy); | |
883 | virtio_serial_exit(proxy->vdev); | |
884 | return virtio_exit_pci(pci_dev); | |
885 | } | |
886 | ||
887 | static int virtio_net_init_pci(PCIDevice *pci_dev) | |
888 | { | |
889 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
890 | VirtIODevice *vdev; | |
891 | ||
892 | vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); | |
893 | ||
894 | vdev->nvectors = proxy->nvectors; | |
895 | virtio_init_pci(proxy, vdev); | |
896 | ||
897 | /* make the actual value visible */ | |
898 | proxy->nvectors = vdev->nvectors; | |
899 | return 0; | |
900 | } | |
901 | ||
902 | static int virtio_net_exit_pci(PCIDevice *pci_dev) | |
903 | { | |
904 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
905 | ||
906 | virtio_pci_stop_ioeventfd(proxy); | |
907 | virtio_net_exit(proxy->vdev); | |
908 | return virtio_exit_pci(pci_dev); | |
909 | } | |
910 | ||
911 | static int virtio_balloon_init_pci(PCIDevice *pci_dev) | |
912 | { | |
913 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
914 | VirtIODevice *vdev; | |
915 | ||
916 | if (proxy->class_code != PCI_CLASS_OTHERS && | |
917 | proxy->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */ | |
918 | proxy->class_code = PCI_CLASS_OTHERS; | |
919 | } | |
920 | ||
921 | vdev = virtio_balloon_init(&pci_dev->qdev); | |
922 | if (!vdev) { | |
923 | return -1; | |
924 | } | |
925 | virtio_init_pci(proxy, vdev); | |
926 | return 0; | |
927 | } | |
928 | ||
929 | static int virtio_balloon_exit_pci(PCIDevice *pci_dev) | |
930 | { | |
931 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
932 | ||
933 | virtio_pci_stop_ioeventfd(proxy); | |
934 | virtio_balloon_exit(proxy->vdev); | |
935 | return virtio_exit_pci(pci_dev); | |
936 | } | |
937 | ||
938 | static Property virtio_blk_properties[] = { | |
939 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
940 | DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf), | |
941 | DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial), | |
942 | #ifdef __linux__ | |
943 | DEFINE_PROP_BIT("scsi", VirtIOPCIProxy, blk.scsi, 0, true), | |
944 | #endif | |
945 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
946 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
947 | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), | |
948 | DEFINE_PROP_END_OF_LIST(), | |
949 | }; | |
950 | ||
951 | static void virtio_blk_class_init(ObjectClass *klass, void *data) | |
952 | { | |
953 | DeviceClass *dc = DEVICE_CLASS(klass); | |
954 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
955 | ||
956 | k->init = virtio_blk_init_pci; | |
957 | k->exit = virtio_blk_exit_pci; | |
958 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
959 | k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; | |
960 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
961 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
962 | dc->reset = virtio_pci_reset; | |
963 | dc->props = virtio_blk_properties; | |
964 | } | |
965 | ||
966 | static TypeInfo virtio_blk_info = { | |
967 | .name = "virtio-blk-pci", | |
968 | .parent = TYPE_PCI_DEVICE, | |
969 | .instance_size = sizeof(VirtIOPCIProxy), | |
970 | .class_init = virtio_blk_class_init, | |
971 | }; | |
972 | ||
973 | static Property virtio_net_properties[] = { | |
974 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), | |
975 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), | |
976 | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), | |
977 | DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), | |
978 | DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL), | |
979 | DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST), | |
980 | DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx), | |
981 | DEFINE_PROP_END_OF_LIST(), | |
982 | }; | |
983 | ||
984 | static void virtio_net_class_init(ObjectClass *klass, void *data) | |
985 | { | |
986 | DeviceClass *dc = DEVICE_CLASS(klass); | |
987 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
988 | ||
989 | k->init = virtio_net_init_pci; | |
990 | k->exit = virtio_net_exit_pci; | |
991 | k->romfile = "pxe-virtio.rom"; | |
992 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
993 | k->device_id = PCI_DEVICE_ID_VIRTIO_NET; | |
994 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
995 | k->class_id = PCI_CLASS_NETWORK_ETHERNET; | |
996 | dc->reset = virtio_pci_reset; | |
997 | dc->props = virtio_net_properties; | |
998 | } | |
999 | ||
1000 | static TypeInfo virtio_net_info = { | |
1001 | .name = "virtio-net-pci", | |
1002 | .parent = TYPE_PCI_DEVICE, | |
1003 | .instance_size = sizeof(VirtIOPCIProxy), | |
1004 | .class_init = virtio_net_class_init, | |
1005 | }; | |
1006 | ||
1007 | static Property virtio_serial_properties[] = { | |
1008 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
1009 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED), | |
1010 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
1011 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
1012 | DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), | |
1013 | DEFINE_PROP_END_OF_LIST(), | |
1014 | }; | |
1015 | ||
1016 | static void virtio_serial_class_init(ObjectClass *klass, void *data) | |
1017 | { | |
1018 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1019 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1020 | ||
1021 | k->init = virtio_serial_init_pci; | |
1022 | k->exit = virtio_serial_exit_pci; | |
1023 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1024 | k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; | |
1025 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
1026 | k->class_id = PCI_CLASS_COMMUNICATION_OTHER; | |
1027 | dc->reset = virtio_pci_reset; | |
1028 | dc->props = virtio_serial_properties; | |
1029 | } | |
1030 | ||
1031 | static TypeInfo virtio_serial_info = { | |
1032 | .name = "virtio-serial-pci", | |
1033 | .parent = TYPE_PCI_DEVICE, | |
1034 | .instance_size = sizeof(VirtIOPCIProxy), | |
1035 | .class_init = virtio_serial_class_init, | |
1036 | }; | |
1037 | ||
1038 | static Property virtio_balloon_properties[] = { | |
1039 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
1040 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
1041 | DEFINE_PROP_END_OF_LIST(), | |
1042 | }; | |
1043 | ||
1044 | static void virtio_balloon_class_init(ObjectClass *klass, void *data) | |
1045 | { | |
1046 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1047 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1048 | ||
1049 | k->init = virtio_balloon_init_pci; | |
1050 | k->exit = virtio_balloon_exit_pci; | |
1051 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1052 | k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; | |
1053 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
1054 | k->class_id = PCI_CLASS_OTHERS; | |
1055 | dc->reset = virtio_pci_reset; | |
1056 | dc->props = virtio_balloon_properties; | |
1057 | } | |
1058 | ||
1059 | static TypeInfo virtio_balloon_info = { | |
1060 | .name = "virtio-balloon-pci", | |
1061 | .parent = TYPE_PCI_DEVICE, | |
1062 | .instance_size = sizeof(VirtIOPCIProxy), | |
1063 | .class_init = virtio_balloon_class_init, | |
1064 | }; | |
1065 | ||
1066 | static int virtio_scsi_init_pci(PCIDevice *pci_dev) | |
1067 | { | |
1068 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
1069 | VirtIODevice *vdev; | |
1070 | ||
1071 | vdev = virtio_scsi_init(&pci_dev->qdev, &proxy->scsi); | |
1072 | if (!vdev) { | |
1073 | return -EINVAL; | |
1074 | } | |
1075 | ||
1076 | vdev->nvectors = proxy->nvectors; | |
1077 | virtio_init_pci(proxy, vdev); | |
1078 | ||
1079 | /* make the actual value visible */ | |
1080 | proxy->nvectors = vdev->nvectors; | |
1081 | return 0; | |
1082 | } | |
1083 | ||
1084 | static int virtio_scsi_exit_pci(PCIDevice *pci_dev) | |
1085 | { | |
1086 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
1087 | ||
1088 | virtio_scsi_exit(proxy->vdev); | |
1089 | return virtio_exit_pci(pci_dev); | |
1090 | } | |
1091 | ||
1092 | static Property virtio_scsi_properties[] = { | |
1093 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
1094 | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi), | |
1095 | DEFINE_PROP_END_OF_LIST(), | |
1096 | }; | |
1097 | ||
1098 | static void virtio_scsi_class_init(ObjectClass *klass, void *data) | |
1099 | { | |
1100 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1101 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1102 | ||
1103 | k->init = virtio_scsi_init_pci; | |
1104 | k->exit = virtio_scsi_exit_pci; | |
1105 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1106 | k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
1107 | k->revision = 0x00; | |
1108 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
1109 | dc->reset = virtio_pci_reset; | |
1110 | dc->props = virtio_scsi_properties; | |
1111 | } | |
1112 | ||
1113 | static TypeInfo virtio_scsi_info = { | |
1114 | .name = "virtio-scsi-pci", | |
1115 | .parent = TYPE_PCI_DEVICE, | |
1116 | .instance_size = sizeof(VirtIOPCIProxy), | |
1117 | .class_init = virtio_scsi_class_init, | |
1118 | }; | |
1119 | ||
1120 | static void virtio_pci_register_types(void) | |
1121 | { | |
1122 | type_register_static(&virtio_blk_info); | |
1123 | type_register_static(&virtio_net_info); | |
1124 | type_register_static(&virtio_serial_info); | |
1125 | type_register_static(&virtio_balloon_info); | |
1126 | type_register_static(&virtio_scsi_info); | |
1127 | } | |
1128 | ||
1129 | type_init(virtio_pci_register_types) |