]>
Commit | Line | Data |
---|---|---|
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 | * | |
6b620ca3 PB |
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. | |
53c25cea PB |
16 | */ |
17 | ||
18 | #include <inttypes.h> | |
19 | ||
20 | #include "virtio.h" | |
8172539d MT |
21 | #include "virtio-blk.h" |
22 | #include "virtio-net.h" | |
6b331efb | 23 | #include "virtio-serial.h" |
973abc7f | 24 | #include "virtio-scsi.h" |
53c25cea | 25 | #include "pci.h" |
2f792016 | 26 | #include "qemu-error.h" |
aba800a3 | 27 | #include "msix.h" |
a1e0fea5 | 28 | #include "net.h" |
97b15621 | 29 | #include "loader.h" |
ade80dc8 | 30 | #include "kvm.h" |
2446333c | 31 | #include "blockdev.h" |
9fe1ebeb | 32 | #include "virtio-pci.h" |
1129714f | 33 | #include "range.h" |
53c25cea PB |
34 | |
35 | /* from Linux's linux/virtio_pci.h */ | |
36 | ||
37 | /* A 32-bit r/o bitmask of the features supported by the host */ | |
38 | #define VIRTIO_PCI_HOST_FEATURES 0 | |
39 | ||
40 | /* A 32-bit r/w bitmask of features activated by the guest */ | |
41 | #define VIRTIO_PCI_GUEST_FEATURES 4 | |
42 | ||
43 | /* A 32-bit r/w PFN for the currently selected queue */ | |
44 | #define VIRTIO_PCI_QUEUE_PFN 8 | |
45 | ||
46 | /* A 16-bit r/o queue size for the currently selected queue */ | |
47 | #define VIRTIO_PCI_QUEUE_NUM 12 | |
48 | ||
49 | /* A 16-bit r/w queue selector */ | |
50 | #define VIRTIO_PCI_QUEUE_SEL 14 | |
51 | ||
52 | /* A 16-bit r/w queue notifier */ | |
53 | #define VIRTIO_PCI_QUEUE_NOTIFY 16 | |
54 | ||
55 | /* An 8-bit device status register. */ | |
56 | #define VIRTIO_PCI_STATUS 18 | |
57 | ||
58 | /* An 8-bit r/o interrupt status register. Reading the value will return the | |
59 | * current contents of the ISR and will also clear it. This is effectively | |
60 | * a read-and-acknowledge. */ | |
61 | #define VIRTIO_PCI_ISR 19 | |
62 | ||
aba800a3 MT |
63 | /* MSI-X registers: only enabled if MSI-X is enabled. */ |
64 | /* A 16-bit vector for configuration changes. */ | |
65 | #define VIRTIO_MSI_CONFIG_VECTOR 20 | |
66 | /* A 16-bit vector for selected queue notifications. */ | |
67 | #define VIRTIO_MSI_QUEUE_VECTOR 22 | |
68 | ||
69 | /* Config space size */ | |
70 | #define VIRTIO_PCI_CONFIG_NOMSI 20 | |
71 | #define VIRTIO_PCI_CONFIG_MSI 24 | |
72 | #define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \ | |
73 | VIRTIO_PCI_CONFIG_MSI : \ | |
74 | VIRTIO_PCI_CONFIG_NOMSI) | |
75 | ||
76 | /* The remaining space is defined by each driver as the per-driver | |
77 | * configuration space */ | |
78 | #define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \ | |
79 | VIRTIO_PCI_CONFIG_MSI : \ | |
80 | VIRTIO_PCI_CONFIG_NOMSI) | |
53c25cea | 81 | |
53c25cea PB |
82 | /* How many bits to shift physical queue address written to QUEUE_PFN. |
83 | * 12 is historical, and due to x86 page size. */ | |
84 | #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 | |
85 | ||
3dbca8e6 SH |
86 | /* Flags track per-device state like workarounds for quirks in older guests. */ |
87 | #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) | |
c81131db | 88 | |
53c25cea PB |
89 | /* QEMU doesn't strictly need write barriers since everything runs in |
90 | * lock-step. We'll leave the calls to wmb() in though to make it obvious for | |
91 | * KVM or if kqemu gets SMP support. | |
92 | */ | |
93 | #define wmb() do { } while (0) | |
94 | ||
82afa586 BH |
95 | /* HACK for virtio to determine if it's running a big endian guest */ |
96 | bool virtio_is_big_endian(void); | |
97 | ||
53c25cea PB |
98 | /* virtio device */ |
99 | ||
7055e687 | 100 | static void virtio_pci_notify(void *opaque, uint16_t vector) |
53c25cea PB |
101 | { |
102 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
103 | if (msix_enabled(&proxy->pci_dev)) |
104 | msix_notify(&proxy->pci_dev, vector); | |
105 | else | |
106 | qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); | |
53c25cea PB |
107 | } |
108 | ||
ff24bd58 MT |
109 | static void virtio_pci_save_config(void * opaque, QEMUFile *f) |
110 | { | |
111 | VirtIOPCIProxy *proxy = opaque; | |
112 | pci_device_save(&proxy->pci_dev, f); | |
113 | msix_save(&proxy->pci_dev, f); | |
114 | if (msix_present(&proxy->pci_dev)) | |
115 | qemu_put_be16(f, proxy->vdev->config_vector); | |
116 | } | |
117 | ||
118 | static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f) | |
119 | { | |
120 | VirtIOPCIProxy *proxy = opaque; | |
121 | if (msix_present(&proxy->pci_dev)) | |
122 | qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); | |
123 | } | |
124 | ||
125 | static int virtio_pci_load_config(void * opaque, QEMUFile *f) | |
126 | { | |
127 | VirtIOPCIProxy *proxy = opaque; | |
128 | int ret; | |
129 | ret = pci_device_load(&proxy->pci_dev, f); | |
e6da7680 | 130 | if (ret) { |
ff24bd58 | 131 | return ret; |
e6da7680 | 132 | } |
ff24bd58 | 133 | msix_load(&proxy->pci_dev, f); |
e6da7680 | 134 | if (msix_present(&proxy->pci_dev)) { |
ff24bd58 | 135 | qemu_get_be16s(f, &proxy->vdev->config_vector); |
e6da7680 MT |
136 | } else { |
137 | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; | |
138 | } | |
139 | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { | |
140 | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); | |
141 | } | |
ff24bd58 MT |
142 | return 0; |
143 | } | |
144 | ||
145 | static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) | |
146 | { | |
147 | VirtIOPCIProxy *proxy = opaque; | |
148 | uint16_t vector; | |
e6da7680 MT |
149 | if (msix_present(&proxy->pci_dev)) { |
150 | qemu_get_be16s(f, &vector); | |
151 | } else { | |
152 | vector = VIRTIO_NO_VECTOR; | |
153 | } | |
ff24bd58 | 154 | virtio_queue_set_vector(proxy->vdev, n, vector); |
e6da7680 MT |
155 | if (vector != VIRTIO_NO_VECTOR) { |
156 | return msix_vector_use(&proxy->pci_dev, vector); | |
157 | } | |
ff24bd58 MT |
158 | return 0; |
159 | } | |
160 | ||
25db9ebe SH |
161 | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
162 | int n, bool assign) | |
163 | { | |
164 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
165 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
da146d0a AK |
166 | int r = 0; |
167 | ||
25db9ebe SH |
168 | if (assign) { |
169 | r = event_notifier_init(notifier, 1); | |
170 | if (r < 0) { | |
b36e3914 MT |
171 | error_report("%s: unable to init event notifier: %d", |
172 | __func__, r); | |
25db9ebe SH |
173 | return r; |
174 | } | |
da146d0a AK |
175 | memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
176 | true, n, event_notifier_get_fd(notifier)); | |
25db9ebe | 177 | } else { |
da146d0a AK |
178 | memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
179 | true, n, event_notifier_get_fd(notifier)); | |
25db9ebe SH |
180 | /* Handle the race condition where the guest kicked and we deassigned |
181 | * before we got around to handling the kick. | |
182 | */ | |
183 | if (event_notifier_test_and_clear(notifier)) { | |
184 | virtio_queue_notify_vq(vq); | |
185 | } | |
186 | ||
187 | event_notifier_cleanup(notifier); | |
188 | } | |
189 | return r; | |
190 | } | |
191 | ||
192 | static void virtio_pci_host_notifier_read(void *opaque) | |
193 | { | |
194 | VirtQueue *vq = opaque; | |
195 | EventNotifier *n = virtio_queue_get_host_notifier(vq); | |
196 | if (event_notifier_test_and_clear(n)) { | |
197 | virtio_queue_notify_vq(vq); | |
198 | } | |
199 | } | |
200 | ||
201 | static void virtio_pci_set_host_notifier_fd_handler(VirtIOPCIProxy *proxy, | |
202 | int n, bool assign) | |
203 | { | |
204 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
205 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
206 | if (assign) { | |
207 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
208 | virtio_pci_host_notifier_read, NULL, vq); | |
209 | } else { | |
210 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
211 | NULL, NULL, NULL); | |
212 | } | |
213 | } | |
214 | ||
b36e3914 | 215 | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe SH |
216 | { |
217 | int n, r; | |
218 | ||
219 | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || | |
220 | proxy->ioeventfd_disabled || | |
221 | proxy->ioeventfd_started) { | |
b36e3914 | 222 | return; |
25db9ebe SH |
223 | } |
224 | ||
225 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
226 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
227 | continue; | |
228 | } | |
229 | ||
230 | r = virtio_pci_set_host_notifier_internal(proxy, n, true); | |
231 | if (r < 0) { | |
232 | goto assign_error; | |
233 | } | |
234 | ||
235 | virtio_pci_set_host_notifier_fd_handler(proxy, n, true); | |
236 | } | |
237 | proxy->ioeventfd_started = true; | |
b36e3914 | 238 | return; |
25db9ebe SH |
239 | |
240 | assign_error: | |
241 | while (--n >= 0) { | |
242 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
243 | continue; | |
244 | } | |
245 | ||
246 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
b36e3914 MT |
247 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); |
248 | assert(r >= 0); | |
25db9ebe SH |
249 | } |
250 | proxy->ioeventfd_started = false; | |
b36e3914 | 251 | error_report("%s: failed. Fallback to a userspace (slower).", __func__); |
25db9ebe SH |
252 | } |
253 | ||
b36e3914 | 254 | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe | 255 | { |
b36e3914 | 256 | int r; |
25db9ebe SH |
257 | int n; |
258 | ||
259 | if (!proxy->ioeventfd_started) { | |
b36e3914 | 260 | return; |
25db9ebe SH |
261 | } |
262 | ||
263 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
264 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
265 | continue; | |
266 | } | |
267 | ||
268 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
b36e3914 MT |
269 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); |
270 | assert(r >= 0); | |
25db9ebe SH |
271 | } |
272 | proxy->ioeventfd_started = false; | |
25db9ebe SH |
273 | } |
274 | ||
8798d6c9 | 275 | void virtio_pci_reset(DeviceState *d) |
7055e687 | 276 | { |
e489030d | 277 | VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
25db9ebe | 278 | virtio_pci_stop_ioeventfd(proxy); |
7055e687 | 279 | virtio_reset(proxy->vdev); |
aba800a3 | 280 | msix_reset(&proxy->pci_dev); |
25db9ebe | 281 | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
7055e687 MT |
282 | } |
283 | ||
53c25cea PB |
284 | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
285 | { | |
286 | VirtIOPCIProxy *proxy = opaque; | |
287 | VirtIODevice *vdev = proxy->vdev; | |
c227f099 | 288 | target_phys_addr_t pa; |
53c25cea | 289 | |
53c25cea PB |
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)) { | |
ad0c9332 | 294 | val = vdev->bad_features ? vdev->bad_features(vdev) : 0; |
53c25cea | 295 | } |
ad0c9332 | 296 | virtio_set_features(vdev, val); |
53c25cea PB |
297 | break; |
298 | case VIRTIO_PCI_QUEUE_PFN: | |
c227f099 | 299 | pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
1b8e9b27 | 300 | if (pa == 0) { |
25db9ebe | 301 | virtio_pci_stop_ioeventfd(proxy); |
1b8e9b27 MT |
302 | virtio_reset(proxy->vdev); |
303 | msix_unuse_all_vectors(&proxy->pci_dev); | |
304 | } | |
7055e687 MT |
305 | else |
306 | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); | |
53c25cea PB |
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: | |
7157e2e2 SH |
313 | if (val < VIRTIO_PCI_QUEUE_MAX) { |
314 | virtio_queue_notify(vdev, val); | |
315 | } | |
53c25cea PB |
316 | break; |
317 | case VIRTIO_PCI_STATUS: | |
25db9ebe SH |
318 | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) { |
319 | virtio_pci_stop_ioeventfd(proxy); | |
320 | } | |
321 | ||
3e607cb5 | 322 | virtio_set_status(vdev, val & 0xFF); |
25db9ebe SH |
323 | |
324 | if (val & VIRTIO_CONFIG_S_DRIVER_OK) { | |
325 | virtio_pci_start_ioeventfd(proxy); | |
326 | } | |
327 | ||
1b8e9b27 MT |
328 | if (vdev->status == 0) { |
329 | virtio_reset(proxy->vdev); | |
330 | msix_unuse_all_vectors(&proxy->pci_dev); | |
331 | } | |
c81131db AG |
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)) { | |
3dbca8e6 | 338 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
c81131db | 339 | } |
53c25cea | 340 | break; |
aba800a3 MT |
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: | |
4e02d460 SH |
357 | error_report("%s: unexpected address 0x%x value 0x%x", |
358 | __func__, addr, val); | |
aba800a3 | 359 | break; |
53c25cea PB |
360 | } |
361 | } | |
362 | ||
aba800a3 | 363 | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) |
53c25cea | 364 | { |
53c25cea PB |
365 | VirtIODevice *vdev = proxy->vdev; |
366 | uint32_t ret = 0xFFFFFFFF; | |
367 | ||
53c25cea PB |
368 | switch (addr) { |
369 | case VIRTIO_PCI_HOST_FEATURES: | |
8172539d | 370 | ret = proxy->host_features; |
53c25cea PB |
371 | break; |
372 | case VIRTIO_PCI_GUEST_FEATURES: | |
704a76fc | 373 | ret = vdev->guest_features; |
53c25cea PB |
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; | |
7055e687 | 392 | qemu_set_irq(proxy->pci_dev.irq[0], 0); |
53c25cea | 393 | break; |
aba800a3 MT |
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; | |
53c25cea PB |
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; | |
aba800a3 | 410 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
411 | if (addr < config) |
412 | return virtio_ioport_read(proxy, addr); | |
413 | addr -= config; | |
53c25cea PB |
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; | |
aba800a3 | 420 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
82afa586 | 421 | uint16_t val; |
aba800a3 MT |
422 | if (addr < config) |
423 | return virtio_ioport_read(proxy, addr); | |
424 | addr -= config; | |
82afa586 BH |
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; | |
53c25cea PB |
435 | } |
436 | ||
437 | static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) | |
438 | { | |
439 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 440 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
82afa586 | 441 | uint32_t val; |
aba800a3 MT |
442 | if (addr < config) |
443 | return virtio_ioport_read(proxy, addr); | |
444 | addr -= config; | |
82afa586 BH |
445 | val = virtio_config_readl(proxy->vdev, addr); |
446 | if (virtio_is_big_endian()) { | |
447 | val = bswap32(val); | |
448 | } | |
449 | return val; | |
53c25cea PB |
450 | } |
451 | ||
452 | static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) | |
453 | { | |
454 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 455 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
456 | if (addr < config) { |
457 | virtio_ioport_write(proxy, addr, val); | |
458 | return; | |
459 | } | |
460 | addr -= config; | |
53c25cea PB |
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; | |
aba800a3 | 467 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
468 | if (addr < config) { |
469 | virtio_ioport_write(proxy, addr, val); | |
470 | return; | |
471 | } | |
472 | addr -= config; | |
82afa586 BH |
473 | if (virtio_is_big_endian()) { |
474 | val = bswap16(val); | |
475 | } | |
53c25cea PB |
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; | |
aba800a3 | 482 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
483 | if (addr < config) { |
484 | virtio_ioport_write(proxy, addr, val); | |
485 | return; | |
486 | } | |
487 | addr -= config; | |
82afa586 BH |
488 | if (virtio_is_big_endian()) { |
489 | val = bswap32(val); | |
490 | } | |
53c25cea PB |
491 | virtio_config_writel(proxy->vdev, addr, val); |
492 | } | |
493 | ||
da146d0a AK |
494 | 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 | }; | |
53c25cea | 503 | |
da146d0a AK |
504 | static const MemoryRegionOps virtio_pci_config_ops = { |
505 | .old_portio = virtio_portio, | |
506 | .endianness = DEVICE_LITTLE_ENDIAN, | |
507 | }; | |
aba800a3 MT |
508 | |
509 | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, | |
510 | uint32_t val, int len) | |
511 | { | |
ed757e14 YV |
512 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
513 | ||
1129714f MT |
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); | |
ed757e14 YV |
522 | } |
523 | ||
85352471 | 524 | msix_write_config(pci_dev, address, val, len); |
53c25cea PB |
525 | } |
526 | ||
6d74ca5a MT |
527 | static unsigned virtio_pci_get_features(void *opaque) |
528 | { | |
8172539d MT |
529 | VirtIOPCIProxy *proxy = opaque; |
530 | return proxy->host_features; | |
6d74ca5a MT |
531 | } |
532 | ||
ade80dc8 MT |
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 virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) | |
543 | { | |
544 | VirtIOPCIProxy *proxy = opaque; | |
545 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
546 | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); | |
547 | ||
548 | if (assign) { | |
549 | int r = event_notifier_init(notifier, 0); | |
550 | if (r < 0) { | |
551 | return r; | |
552 | } | |
553 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
554 | virtio_pci_guest_notifier_read, NULL, vq); | |
555 | } else { | |
556 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
557 | NULL, NULL, NULL); | |
558 | event_notifier_cleanup(notifier); | |
559 | } | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
5430a28f | 564 | static bool virtio_pci_query_guest_notifiers(void *opaque) |
565 | { | |
566 | VirtIOPCIProxy *proxy = opaque; | |
567 | return msix_enabled(&proxy->pci_dev); | |
568 | } | |
569 | ||
54dd9321 MT |
570 | static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
571 | { | |
572 | VirtIOPCIProxy *proxy = opaque; | |
573 | VirtIODevice *vdev = proxy->vdev; | |
574 | int r, n; | |
575 | ||
576 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
577 | if (!virtio_queue_get_num(vdev, n)) { | |
578 | break; | |
579 | } | |
580 | ||
581 | r = virtio_pci_set_guest_notifier(opaque, n, assign); | |
582 | if (r < 0) { | |
583 | goto assign_error; | |
584 | } | |
585 | } | |
586 | ||
587 | return 0; | |
588 | ||
589 | assign_error: | |
590 | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ | |
591 | while (--n >= 0) { | |
592 | virtio_pci_set_guest_notifier(opaque, n, !assign); | |
593 | } | |
594 | return r; | |
595 | } | |
596 | ||
ade80dc8 MT |
597 | static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
598 | { | |
599 | VirtIOPCIProxy *proxy = opaque; | |
25db9ebe SH |
600 | |
601 | /* Stop using ioeventfd for virtqueue kick if the device starts using host | |
602 | * notifiers. This makes it easy to avoid stepping on each others' toes. | |
603 | */ | |
604 | proxy->ioeventfd_disabled = assign; | |
ade80dc8 | 605 | if (assign) { |
25db9ebe SH |
606 | virtio_pci_stop_ioeventfd(proxy); |
607 | } | |
608 | /* We don't need to start here: it's not needed because backend | |
609 | * currently only stops on status change away from ok, | |
610 | * reset, vmstop and such. If we do add code to start here, | |
611 | * need to check vmstate, device state etc. */ | |
612 | return virtio_pci_set_host_notifier_internal(proxy, n, assign); | |
613 | } | |
614 | ||
615 | static void virtio_pci_vmstate_change(void *opaque, bool running) | |
616 | { | |
617 | VirtIOPCIProxy *proxy = opaque; | |
618 | ||
619 | if (running) { | |
89c473fd MT |
620 | /* Try to find out if the guest has bus master disabled, but is |
621 | in ready state. Then we have a buggy guest OS. */ | |
622 | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && | |
623 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
624 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
625 | } | |
25db9ebe | 626 | virtio_pci_start_ioeventfd(proxy); |
ade80dc8 | 627 | } else { |
25db9ebe | 628 | virtio_pci_stop_ioeventfd(proxy); |
ade80dc8 | 629 | } |
ade80dc8 MT |
630 | } |
631 | ||
53c25cea | 632 | static const VirtIOBindings virtio_pci_bindings = { |
ff24bd58 MT |
633 | .notify = virtio_pci_notify, |
634 | .save_config = virtio_pci_save_config, | |
635 | .load_config = virtio_pci_load_config, | |
636 | .save_queue = virtio_pci_save_queue, | |
637 | .load_queue = virtio_pci_load_queue, | |
6d74ca5a | 638 | .get_features = virtio_pci_get_features, |
5430a28f | 639 | .query_guest_notifiers = virtio_pci_query_guest_notifiers, |
ade80dc8 | 640 | .set_host_notifier = virtio_pci_set_host_notifier, |
54dd9321 | 641 | .set_guest_notifiers = virtio_pci_set_guest_notifiers, |
25db9ebe | 642 | .vmstate_change = virtio_pci_vmstate_change, |
53c25cea PB |
643 | }; |
644 | ||
befeac45 | 645 | void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev) |
53c25cea PB |
646 | { |
647 | uint8_t *config; | |
648 | uint32_t size; | |
649 | ||
650 | proxy->vdev = vdev; | |
651 | ||
652 | config = proxy->pci_dev.config; | |
53c25cea | 653 | |
e75ccf2c IY |
654 | if (proxy->class_code) { |
655 | pci_config_set_class(config, proxy->class_code); | |
656 | } | |
ad3d11e6 HKR |
657 | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
658 | pci_get_word(config + PCI_VENDOR_ID)); | |
659 | pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); | |
660 | config[PCI_INTERRUPT_PIN] = 1; | |
53c25cea | 661 | |
95524ae8 AK |
662 | memory_region_init(&proxy->msix_bar, "virtio-msix", 4096); |
663 | if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, | |
664 | &proxy->msix_bar, 1, 0)) { | |
e824b2cc AK |
665 | pci_register_bar(&proxy->pci_dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, |
666 | &proxy->msix_bar); | |
aba800a3 MT |
667 | } else |
668 | vdev->nvectors = 0; | |
669 | ||
ed757e14 YV |
670 | proxy->pci_dev.config_write = virtio_write_config; |
671 | ||
aba800a3 | 672 | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
53c25cea PB |
673 | if (size & (size-1)) |
674 | size = 1 << qemu_fls(size); | |
675 | ||
da146d0a AK |
676 | memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
677 | "virtio-pci", size); | |
e824b2cc AK |
678 | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, |
679 | &proxy->bar); | |
53c25cea | 680 | |
25db9ebe SH |
681 | if (!kvm_has_many_ioeventfds()) { |
682 | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; | |
683 | } | |
684 | ||
53c25cea | 685 | virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
8172539d MT |
686 | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
687 | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; | |
688 | proxy->host_features = vdev->get_features(vdev, proxy->host_features); | |
53c25cea PB |
689 | } |
690 | ||
81a322d4 | 691 | static int virtio_blk_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
692 | { |
693 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
694 | VirtIODevice *vdev; | |
695 | ||
ab73ff29 GH |
696 | if (proxy->class_code != PCI_CLASS_STORAGE_SCSI && |
697 | proxy->class_code != PCI_CLASS_STORAGE_OTHER) | |
698 | proxy->class_code = PCI_CLASS_STORAGE_SCSI; | |
53c25cea | 699 | |
a8686a9b MA |
700 | vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block, |
701 | &proxy->block_serial); | |
ac0c14d7 MA |
702 | if (!vdev) { |
703 | return -1; | |
704 | } | |
177539e0 | 705 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 706 | virtio_init_pci(proxy, vdev); |
177539e0 GH |
707 | /* make the actual value visible */ |
708 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 709 | return 0; |
21d58b57 MM |
710 | } |
711 | ||
0f457d91 MT |
712 | static int virtio_exit_pci(PCIDevice *pci_dev) |
713 | { | |
da146d0a | 714 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
95524ae8 | 715 | int r; |
da146d0a AK |
716 | |
717 | memory_region_destroy(&proxy->bar); | |
95524ae8 AK |
718 | r = msix_uninit(pci_dev, &proxy->msix_bar); |
719 | memory_region_destroy(&proxy->msix_bar); | |
720 | return r; | |
0f457d91 MT |
721 | } |
722 | ||
56a14938 GH |
723 | static int virtio_blk_exit_pci(PCIDevice *pci_dev) |
724 | { | |
725 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
726 | ||
25db9ebe | 727 | virtio_pci_stop_ioeventfd(proxy); |
9d0d3138 | 728 | virtio_blk_exit(proxy->vdev); |
f8b6cc00 | 729 | blockdev_mark_auto_del(proxy->block.bs); |
0f457d91 | 730 | return virtio_exit_pci(pci_dev); |
56a14938 GH |
731 | } |
732 | ||
98b19252 | 733 | static int virtio_serial_init_pci(PCIDevice *pci_dev) |
21d58b57 | 734 | { |
d6beee99 | 735 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
85c2c735 MM |
736 | VirtIODevice *vdev; |
737 | ||
d6beee99 GH |
738 | if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER && |
739 | proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ | |
740 | proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */ | |
741 | proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; | |
742 | ||
6b331efb | 743 | vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); |
25fe3654 AS |
744 | if (!vdev) { |
745 | return -1; | |
746 | } | |
573fb60c | 747 | vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
6b331efb | 748 | ? proxy->serial.max_virtserial_ports + 1 |
573fb60c | 749 | : proxy->nvectors; |
e75ccf2c | 750 | virtio_init_pci(proxy, vdev); |
a1829205 | 751 | proxy->nvectors = vdev->nvectors; |
81a322d4 | 752 | return 0; |
53c25cea PB |
753 | } |
754 | ||
8b53a865 AS |
755 | static int virtio_serial_exit_pci(PCIDevice *pci_dev) |
756 | { | |
757 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
758 | ||
32059220 | 759 | virtio_pci_stop_ioeventfd(proxy); |
8b53a865 AS |
760 | virtio_serial_exit(proxy->vdev); |
761 | return virtio_exit_pci(pci_dev); | |
762 | } | |
763 | ||
81a322d4 | 764 | static int virtio_net_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
765 | { |
766 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
767 | VirtIODevice *vdev; | |
768 | ||
f0c07c7c | 769 | vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); |
a1e0fea5 | 770 | |
97b15621 | 771 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 772 | virtio_init_pci(proxy, vdev); |
a1e0fea5 GH |
773 | |
774 | /* make the actual value visible */ | |
775 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 776 | return 0; |
53c25cea PB |
777 | } |
778 | ||
97b15621 GH |
779 | static int virtio_net_exit_pci(PCIDevice *pci_dev) |
780 | { | |
781 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
782 | ||
25db9ebe | 783 | virtio_pci_stop_ioeventfd(proxy); |
97b15621 GH |
784 | virtio_net_exit(proxy->vdev); |
785 | return virtio_exit_pci(pci_dev); | |
786 | } | |
787 | ||
81a322d4 | 788 | static int virtio_balloon_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
789 | { |
790 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
791 | VirtIODevice *vdev; | |
792 | ||
793 | vdev = virtio_balloon_init(&pci_dev->qdev); | |
f76f6655 AS |
794 | if (!vdev) { |
795 | return -1; | |
796 | } | |
e75ccf2c | 797 | virtio_init_pci(proxy, vdev); |
81a322d4 | 798 | return 0; |
53c25cea PB |
799 | } |
800 | ||
855d7e25 AS |
801 | static int virtio_balloon_exit_pci(PCIDevice *pci_dev) |
802 | { | |
803 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
804 | ||
805 | virtio_pci_stop_ioeventfd(proxy); | |
806 | virtio_balloon_exit(proxy->vdev); | |
807 | return virtio_exit_pci(pci_dev); | |
808 | } | |
809 | ||
40021f08 AL |
810 | static Property virtio_blk_properties[] = { |
811 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
812 | DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block), | |
813 | DEFINE_PROP_STRING("serial", VirtIOPCIProxy, block_serial), | |
814 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
815 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
816 | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), | |
817 | DEFINE_PROP_END_OF_LIST(), | |
e855761c AL |
818 | }; |
819 | ||
40021f08 AL |
820 | static void virtio_blk_class_init(ObjectClass *klass, void *data) |
821 | { | |
39bffca2 | 822 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
823 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
824 | ||
825 | k->init = virtio_blk_init_pci; | |
826 | k->exit = virtio_blk_exit_pci; | |
827 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
828 | k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; | |
829 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
830 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
39bffca2 AL |
831 | dc->reset = virtio_pci_reset; |
832 | dc->props = virtio_blk_properties; | |
40021f08 AL |
833 | } |
834 | ||
39bffca2 AL |
835 | static TypeInfo virtio_blk_info = { |
836 | .name = "virtio-blk-pci", | |
837 | .parent = TYPE_PCI_DEVICE, | |
838 | .instance_size = sizeof(VirtIOPCIProxy), | |
839 | .class_init = virtio_blk_class_init, | |
40021f08 AL |
840 | }; |
841 | ||
842 | static Property virtio_net_properties[] = { | |
843 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), | |
844 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), | |
845 | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), | |
846 | DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), | |
847 | DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL), | |
848 | DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST), | |
849 | DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx), | |
850 | DEFINE_PROP_END_OF_LIST(), | |
851 | }; | |
852 | ||
853 | static void virtio_net_class_init(ObjectClass *klass, void *data) | |
854 | { | |
39bffca2 | 855 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
856 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
857 | ||
858 | k->init = virtio_net_init_pci; | |
859 | k->exit = virtio_net_exit_pci; | |
860 | k->romfile = "pxe-virtio.rom"; | |
861 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
862 | k->device_id = PCI_DEVICE_ID_VIRTIO_NET; | |
863 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
864 | k->class_id = PCI_CLASS_NETWORK_ETHERNET; | |
39bffca2 AL |
865 | dc->reset = virtio_pci_reset; |
866 | dc->props = virtio_net_properties; | |
40021f08 AL |
867 | } |
868 | ||
39bffca2 AL |
869 | static TypeInfo virtio_net_info = { |
870 | .name = "virtio-net-pci", | |
871 | .parent = TYPE_PCI_DEVICE, | |
872 | .instance_size = sizeof(VirtIOPCIProxy), | |
873 | .class_init = virtio_net_class_init, | |
e855761c AL |
874 | }; |
875 | ||
40021f08 AL |
876 | static Property virtio_serial_properties[] = { |
877 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
878 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED), | |
879 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
880 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
881 | DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), | |
882 | DEFINE_PROP_END_OF_LIST(), | |
e855761c AL |
883 | }; |
884 | ||
40021f08 AL |
885 | static void virtio_serial_class_init(ObjectClass *klass, void *data) |
886 | { | |
39bffca2 | 887 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
888 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
889 | ||
890 | k->init = virtio_serial_init_pci; | |
891 | k->exit = virtio_serial_exit_pci; | |
892 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
893 | k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; | |
894 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
895 | k->class_id = PCI_CLASS_COMMUNICATION_OTHER; | |
39bffca2 AL |
896 | dc->reset = virtio_pci_reset; |
897 | dc->props = virtio_serial_properties; | |
40021f08 AL |
898 | } |
899 | ||
39bffca2 AL |
900 | static TypeInfo virtio_serial_info = { |
901 | .name = "virtio-serial-pci", | |
902 | .parent = TYPE_PCI_DEVICE, | |
903 | .instance_size = sizeof(VirtIOPCIProxy), | |
904 | .class_init = virtio_serial_class_init, | |
40021f08 AL |
905 | }; |
906 | ||
907 | static Property virtio_balloon_properties[] = { | |
908 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
909 | DEFINE_PROP_END_OF_LIST(), | |
910 | }; | |
911 | ||
912 | static void virtio_balloon_class_init(ObjectClass *klass, void *data) | |
913 | { | |
39bffca2 | 914 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
915 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
916 | ||
917 | k->init = virtio_balloon_init_pci; | |
918 | k->exit = virtio_balloon_exit_pci; | |
919 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
920 | k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; | |
921 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
922 | k->class_id = PCI_CLASS_MEMORY_RAM; | |
39bffca2 AL |
923 | dc->reset = virtio_pci_reset; |
924 | dc->props = virtio_balloon_properties; | |
40021f08 AL |
925 | } |
926 | ||
39bffca2 AL |
927 | static TypeInfo virtio_balloon_info = { |
928 | .name = "virtio-balloon-pci", | |
929 | .parent = TYPE_PCI_DEVICE, | |
930 | .instance_size = sizeof(VirtIOPCIProxy), | |
931 | .class_init = virtio_balloon_class_init, | |
0aab0d3a GH |
932 | }; |
933 | ||
973abc7f SH |
934 | static int virtio_scsi_init_pci(PCIDevice *pci_dev) |
935 | { | |
936 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
937 | VirtIODevice *vdev; | |
938 | ||
939 | vdev = virtio_scsi_init(&pci_dev->qdev, &proxy->scsi); | |
940 | if (!vdev) { | |
941 | return -EINVAL; | |
942 | } | |
943 | ||
944 | vdev->nvectors = proxy->nvectors; | |
945 | virtio_init_pci(proxy, vdev); | |
946 | ||
947 | /* make the actual value visible */ | |
948 | proxy->nvectors = vdev->nvectors; | |
949 | return 0; | |
950 | } | |
951 | ||
952 | static int virtio_scsi_exit_pci(PCIDevice *pci_dev) | |
953 | { | |
954 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
955 | ||
956 | virtio_scsi_exit(proxy->vdev); | |
957 | return virtio_exit_pci(pci_dev); | |
958 | } | |
959 | ||
960 | static Property virtio_scsi_properties[] = { | |
961 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
962 | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi), | |
963 | DEFINE_PROP_END_OF_LIST(), | |
964 | }; | |
965 | ||
966 | static void virtio_scsi_class_init(ObjectClass *klass, void *data) | |
967 | { | |
968 | DeviceClass *dc = DEVICE_CLASS(klass); | |
969 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
970 | ||
971 | k->init = virtio_scsi_init_pci; | |
972 | k->exit = virtio_scsi_exit_pci; | |
973 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
974 | k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
975 | k->revision = 0x00; | |
976 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
977 | dc->reset = virtio_pci_reset; | |
978 | dc->props = virtio_scsi_properties; | |
979 | } | |
980 | ||
981 | static TypeInfo virtio_scsi_info = { | |
982 | .name = "virtio-scsi-pci", | |
983 | .parent = TYPE_PCI_DEVICE, | |
984 | .instance_size = sizeof(VirtIOPCIProxy), | |
985 | .class_init = virtio_scsi_class_init, | |
986 | }; | |
987 | ||
83f7d43a | 988 | static void virtio_pci_register_types(void) |
53c25cea | 989 | { |
39bffca2 | 990 | type_register_static(&virtio_blk_info); |
39bffca2 | 991 | type_register_static(&virtio_net_info); |
39bffca2 | 992 | type_register_static(&virtio_serial_info); |
39bffca2 | 993 | type_register_static(&virtio_balloon_info); |
973abc7f | 994 | type_register_static(&virtio_scsi_info); |
53c25cea PB |
995 | } |
996 | ||
83f7d43a | 997 | type_init(virtio_pci_register_types) |