]>
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" |
7d37d351 | 27 | #include "msi.h" |
aba800a3 | 28 | #include "msix.h" |
a1e0fea5 | 29 | #include "net.h" |
97b15621 | 30 | #include "loader.h" |
ade80dc8 | 31 | #include "kvm.h" |
2446333c | 32 | #include "blockdev.h" |
9fe1ebeb | 33 | #include "virtio-pci.h" |
1129714f | 34 | #include "range.h" |
53c25cea PB |
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 | ||
aba800a3 MT |
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) | |
53c25cea | 82 | |
53c25cea PB |
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 | ||
3dbca8e6 SH |
87 | /* Flags track per-device state like workarounds for quirks in older guests. */ |
88 | #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) | |
c81131db | 89 | |
53c25cea PB |
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 | ||
82afa586 BH |
96 | /* HACK for virtio to determine if it's running a big endian guest */ |
97 | bool virtio_is_big_endian(void); | |
98 | ||
53c25cea PB |
99 | /* virtio device */ |
100 | ||
7055e687 | 101 | static void virtio_pci_notify(void *opaque, uint16_t vector) |
53c25cea PB |
102 | { |
103 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 MT |
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); | |
53c25cea PB |
108 | } |
109 | ||
ff24bd58 MT |
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); | |
e6da7680 | 131 | if (ret) { |
ff24bd58 | 132 | return ret; |
e6da7680 | 133 | } |
3cac001e | 134 | msix_unuse_all_vectors(&proxy->pci_dev); |
ff24bd58 | 135 | msix_load(&proxy->pci_dev, f); |
e6da7680 | 136 | if (msix_present(&proxy->pci_dev)) { |
ff24bd58 | 137 | qemu_get_be16s(f, &proxy->vdev->config_vector); |
e6da7680 MT |
138 | } else { |
139 | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; | |
140 | } | |
141 | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { | |
142 | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); | |
143 | } | |
ff24bd58 MT |
144 | return 0; |
145 | } | |
146 | ||
147 | static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) | |
148 | { | |
149 | VirtIOPCIProxy *proxy = opaque; | |
150 | uint16_t vector; | |
e6da7680 MT |
151 | if (msix_present(&proxy->pci_dev)) { |
152 | qemu_get_be16s(f, &vector); | |
153 | } else { | |
154 | vector = VIRTIO_NO_VECTOR; | |
155 | } | |
ff24bd58 | 156 | virtio_queue_set_vector(proxy->vdev, n, vector); |
e6da7680 MT |
157 | if (vector != VIRTIO_NO_VECTOR) { |
158 | return msix_vector_use(&proxy->pci_dev, vector); | |
159 | } | |
ff24bd58 MT |
160 | return 0; |
161 | } | |
162 | ||
25db9ebe | 163 | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
26b9b5fe | 164 | int n, bool assign, bool set_handler) |
25db9ebe SH |
165 | { |
166 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
167 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
da146d0a AK |
168 | int r = 0; |
169 | ||
25db9ebe SH |
170 | if (assign) { |
171 | r = event_notifier_init(notifier, 1); | |
172 | if (r < 0) { | |
b36e3914 MT |
173 | error_report("%s: unable to init event notifier: %d", |
174 | __func__, r); | |
25db9ebe SH |
175 | return r; |
176 | } | |
26b9b5fe | 177 | virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); |
da146d0a | 178 | memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
753d5e14 | 179 | true, n, notifier); |
25db9ebe | 180 | } else { |
da146d0a | 181 | memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
753d5e14 | 182 | true, n, notifier); |
26b9b5fe | 183 | virtio_queue_set_host_notifier_fd_handler(vq, false, false); |
25db9ebe SH |
184 | event_notifier_cleanup(notifier); |
185 | } | |
186 | return r; | |
187 | } | |
188 | ||
b36e3914 | 189 | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe SH |
190 | { |
191 | int n, r; | |
192 | ||
193 | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || | |
194 | proxy->ioeventfd_disabled || | |
195 | proxy->ioeventfd_started) { | |
b36e3914 | 196 | return; |
25db9ebe SH |
197 | } |
198 | ||
199 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
200 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
201 | continue; | |
202 | } | |
203 | ||
26b9b5fe | 204 | r = virtio_pci_set_host_notifier_internal(proxy, n, true, true); |
25db9ebe SH |
205 | if (r < 0) { |
206 | goto assign_error; | |
207 | } | |
25db9ebe SH |
208 | } |
209 | proxy->ioeventfd_started = true; | |
b36e3914 | 210 | return; |
25db9ebe SH |
211 | |
212 | assign_error: | |
213 | while (--n >= 0) { | |
214 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
215 | continue; | |
216 | } | |
217 | ||
26b9b5fe | 218 | r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
b36e3914 | 219 | assert(r >= 0); |
25db9ebe SH |
220 | } |
221 | proxy->ioeventfd_started = false; | |
b36e3914 | 222 | error_report("%s: failed. Fallback to a userspace (slower).", __func__); |
25db9ebe SH |
223 | } |
224 | ||
b36e3914 | 225 | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe | 226 | { |
b36e3914 | 227 | int r; |
25db9ebe SH |
228 | int n; |
229 | ||
230 | if (!proxy->ioeventfd_started) { | |
b36e3914 | 231 | return; |
25db9ebe SH |
232 | } |
233 | ||
234 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
235 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
236 | continue; | |
237 | } | |
238 | ||
26b9b5fe | 239 | r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
b36e3914 | 240 | assert(r >= 0); |
25db9ebe SH |
241 | } |
242 | proxy->ioeventfd_started = false; | |
25db9ebe SH |
243 | } |
244 | ||
8798d6c9 | 245 | void virtio_pci_reset(DeviceState *d) |
7055e687 | 246 | { |
e489030d | 247 | VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
25db9ebe | 248 | virtio_pci_stop_ioeventfd(proxy); |
7055e687 | 249 | virtio_reset(proxy->vdev); |
3cac001e | 250 | msix_unuse_all_vectors(&proxy->pci_dev); |
25db9ebe | 251 | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
7055e687 MT |
252 | } |
253 | ||
53c25cea PB |
254 | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
255 | { | |
256 | VirtIOPCIProxy *proxy = opaque; | |
257 | VirtIODevice *vdev = proxy->vdev; | |
a8170e5e | 258 | hwaddr pa; |
53c25cea | 259 | |
53c25cea PB |
260 | switch (addr) { |
261 | case VIRTIO_PCI_GUEST_FEATURES: | |
262 | /* Guest does not negotiate properly? We have to assume nothing. */ | |
263 | if (val & (1 << VIRTIO_F_BAD_FEATURE)) { | |
ad0c9332 | 264 | val = vdev->bad_features ? vdev->bad_features(vdev) : 0; |
53c25cea | 265 | } |
ad0c9332 | 266 | virtio_set_features(vdev, val); |
53c25cea PB |
267 | break; |
268 | case VIRTIO_PCI_QUEUE_PFN: | |
a8170e5e | 269 | pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
1b8e9b27 | 270 | if (pa == 0) { |
25db9ebe | 271 | virtio_pci_stop_ioeventfd(proxy); |
1b8e9b27 MT |
272 | virtio_reset(proxy->vdev); |
273 | msix_unuse_all_vectors(&proxy->pci_dev); | |
274 | } | |
7055e687 MT |
275 | else |
276 | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); | |
53c25cea PB |
277 | break; |
278 | case VIRTIO_PCI_QUEUE_SEL: | |
279 | if (val < VIRTIO_PCI_QUEUE_MAX) | |
280 | vdev->queue_sel = val; | |
281 | break; | |
282 | case VIRTIO_PCI_QUEUE_NOTIFY: | |
7157e2e2 SH |
283 | if (val < VIRTIO_PCI_QUEUE_MAX) { |
284 | virtio_queue_notify(vdev, val); | |
285 | } | |
53c25cea PB |
286 | break; |
287 | case VIRTIO_PCI_STATUS: | |
25db9ebe SH |
288 | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) { |
289 | virtio_pci_stop_ioeventfd(proxy); | |
290 | } | |
291 | ||
3e607cb5 | 292 | virtio_set_status(vdev, val & 0xFF); |
25db9ebe SH |
293 | |
294 | if (val & VIRTIO_CONFIG_S_DRIVER_OK) { | |
295 | virtio_pci_start_ioeventfd(proxy); | |
296 | } | |
297 | ||
1b8e9b27 MT |
298 | if (vdev->status == 0) { |
299 | virtio_reset(proxy->vdev); | |
300 | msix_unuse_all_vectors(&proxy->pci_dev); | |
301 | } | |
c81131db AG |
302 | |
303 | /* Linux before 2.6.34 sets the device as OK without enabling | |
304 | the PCI device bus master bit. In this case we need to disable | |
305 | some safety checks. */ | |
306 | if ((val & VIRTIO_CONFIG_S_DRIVER_OK) && | |
307 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
3dbca8e6 | 308 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
c81131db | 309 | } |
53c25cea | 310 | break; |
aba800a3 MT |
311 | case VIRTIO_MSI_CONFIG_VECTOR: |
312 | msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); | |
313 | /* Make it possible for guest to discover an error took place. */ | |
314 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
315 | val = VIRTIO_NO_VECTOR; | |
316 | vdev->config_vector = val; | |
317 | break; | |
318 | case VIRTIO_MSI_QUEUE_VECTOR: | |
319 | msix_vector_unuse(&proxy->pci_dev, | |
320 | virtio_queue_vector(vdev, vdev->queue_sel)); | |
321 | /* Make it possible for guest to discover an error took place. */ | |
322 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
323 | val = VIRTIO_NO_VECTOR; | |
324 | virtio_queue_set_vector(vdev, vdev->queue_sel, val); | |
325 | break; | |
326 | default: | |
4e02d460 SH |
327 | error_report("%s: unexpected address 0x%x value 0x%x", |
328 | __func__, addr, val); | |
aba800a3 | 329 | break; |
53c25cea PB |
330 | } |
331 | } | |
332 | ||
aba800a3 | 333 | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) |
53c25cea | 334 | { |
53c25cea PB |
335 | VirtIODevice *vdev = proxy->vdev; |
336 | uint32_t ret = 0xFFFFFFFF; | |
337 | ||
53c25cea PB |
338 | switch (addr) { |
339 | case VIRTIO_PCI_HOST_FEATURES: | |
8172539d | 340 | ret = proxy->host_features; |
53c25cea PB |
341 | break; |
342 | case VIRTIO_PCI_GUEST_FEATURES: | |
704a76fc | 343 | ret = vdev->guest_features; |
53c25cea PB |
344 | break; |
345 | case VIRTIO_PCI_QUEUE_PFN: | |
346 | ret = virtio_queue_get_addr(vdev, vdev->queue_sel) | |
347 | >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; | |
348 | break; | |
349 | case VIRTIO_PCI_QUEUE_NUM: | |
350 | ret = virtio_queue_get_num(vdev, vdev->queue_sel); | |
351 | break; | |
352 | case VIRTIO_PCI_QUEUE_SEL: | |
353 | ret = vdev->queue_sel; | |
354 | break; | |
355 | case VIRTIO_PCI_STATUS: | |
356 | ret = vdev->status; | |
357 | break; | |
358 | case VIRTIO_PCI_ISR: | |
359 | /* reading from the ISR also clears it. */ | |
360 | ret = vdev->isr; | |
361 | vdev->isr = 0; | |
7055e687 | 362 | qemu_set_irq(proxy->pci_dev.irq[0], 0); |
53c25cea | 363 | break; |
aba800a3 MT |
364 | case VIRTIO_MSI_CONFIG_VECTOR: |
365 | ret = vdev->config_vector; | |
366 | break; | |
367 | case VIRTIO_MSI_QUEUE_VECTOR: | |
368 | ret = virtio_queue_vector(vdev, vdev->queue_sel); | |
369 | break; | |
53c25cea PB |
370 | default: |
371 | break; | |
372 | } | |
373 | ||
374 | return ret; | |
375 | } | |
376 | ||
df6db5b3 AG |
377 | static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, |
378 | unsigned size) | |
53c25cea PB |
379 | { |
380 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 381 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
df6db5b3 | 382 | uint64_t val = 0; |
aba800a3 | 383 | if (addr < config) { |
df6db5b3 | 384 | return virtio_ioport_read(proxy, addr); |
aba800a3 MT |
385 | } |
386 | addr -= config; | |
53c25cea | 387 | |
df6db5b3 AG |
388 | switch (size) { |
389 | case 1: | |
390 | val = virtio_config_readb(proxy->vdev, addr); | |
391 | break; | |
392 | case 2: | |
393 | val = virtio_config_readw(proxy->vdev, addr); | |
394 | if (virtio_is_big_endian()) { | |
395 | val = bswap16(val); | |
396 | } | |
397 | break; | |
398 | case 4: | |
399 | val = virtio_config_readl(proxy->vdev, addr); | |
400 | if (virtio_is_big_endian()) { | |
401 | val = bswap32(val); | |
402 | } | |
403 | break; | |
82afa586 | 404 | } |
df6db5b3 | 405 | return val; |
53c25cea PB |
406 | } |
407 | ||
df6db5b3 AG |
408 | static void virtio_pci_config_write(void *opaque, hwaddr addr, |
409 | uint64_t val, unsigned size) | |
53c25cea PB |
410 | { |
411 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 412 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
413 | if (addr < config) { |
414 | virtio_ioport_write(proxy, addr, val); | |
415 | return; | |
416 | } | |
417 | addr -= config; | |
df6db5b3 AG |
418 | /* |
419 | * Virtio-PCI is odd. Ioports are LE but config space is target native | |
420 | * endian. | |
421 | */ | |
422 | switch (size) { | |
423 | case 1: | |
424 | virtio_config_writeb(proxy->vdev, addr, val); | |
425 | break; | |
426 | case 2: | |
427 | if (virtio_is_big_endian()) { | |
428 | val = bswap16(val); | |
429 | } | |
430 | virtio_config_writew(proxy->vdev, addr, val); | |
431 | break; | |
432 | case 4: | |
433 | if (virtio_is_big_endian()) { | |
434 | val = bswap32(val); | |
435 | } | |
436 | virtio_config_writel(proxy->vdev, addr, val); | |
437 | break; | |
82afa586 | 438 | } |
53c25cea PB |
439 | } |
440 | ||
da146d0a | 441 | static const MemoryRegionOps virtio_pci_config_ops = { |
df6db5b3 AG |
442 | .read = virtio_pci_config_read, |
443 | .write = virtio_pci_config_write, | |
444 | .impl = { | |
445 | .min_access_size = 1, | |
446 | .max_access_size = 4, | |
447 | }, | |
da146d0a AK |
448 | .endianness = DEVICE_LITTLE_ENDIAN, |
449 | }; | |
aba800a3 MT |
450 | |
451 | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, | |
452 | uint32_t val, int len) | |
453 | { | |
ed757e14 YV |
454 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
455 | ||
1129714f MT |
456 | pci_default_write_config(pci_dev, address, val, len); |
457 | ||
458 | if (range_covers_byte(address, len, PCI_COMMAND) && | |
459 | !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && | |
460 | !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { | |
461 | virtio_pci_stop_ioeventfd(proxy); | |
462 | virtio_set_status(proxy->vdev, | |
463 | proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); | |
ed757e14 | 464 | } |
53c25cea PB |
465 | } |
466 | ||
6d74ca5a MT |
467 | static unsigned virtio_pci_get_features(void *opaque) |
468 | { | |
8172539d MT |
469 | VirtIOPCIProxy *proxy = opaque; |
470 | return proxy->host_features; | |
6d74ca5a MT |
471 | } |
472 | ||
7d37d351 JK |
473 | static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, |
474 | unsigned int queue_no, | |
475 | unsigned int vector, | |
476 | MSIMessage msg) | |
477 | { | |
478 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
15b2bd18 | 479 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
7d37d351 | 480 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
15b2bd18 | 481 | int ret; |
7d37d351 JK |
482 | |
483 | if (irqfd->users == 0) { | |
484 | ret = kvm_irqchip_add_msi_route(kvm_state, msg); | |
485 | if (ret < 0) { | |
486 | return ret; | |
487 | } | |
488 | irqfd->virq = ret; | |
489 | } | |
490 | irqfd->users++; | |
491 | ||
b131c74a | 492 | ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, irqfd->virq); |
7d37d351 JK |
493 | if (ret < 0) { |
494 | if (--irqfd->users == 0) { | |
495 | kvm_irqchip_release_virq(kvm_state, irqfd->virq); | |
496 | } | |
497 | return ret; | |
498 | } | |
499 | ||
15b2bd18 | 500 | virtio_queue_set_guest_notifier_fd_handler(vq, true, true); |
7d37d351 JK |
501 | return 0; |
502 | } | |
503 | ||
504 | static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, | |
505 | unsigned int queue_no, | |
506 | unsigned int vector) | |
507 | { | |
508 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
15b2bd18 | 509 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
7d37d351 | 510 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
15b2bd18 | 511 | int ret; |
7d37d351 | 512 | |
b131c74a | 513 | ret = kvm_irqchip_remove_irqfd_notifier(kvm_state, n, irqfd->virq); |
7d37d351 JK |
514 | assert(ret == 0); |
515 | ||
516 | if (--irqfd->users == 0) { | |
517 | kvm_irqchip_release_virq(kvm_state, irqfd->virq); | |
518 | } | |
519 | ||
15b2bd18 | 520 | virtio_queue_set_guest_notifier_fd_handler(vq, true, false); |
7d37d351 JK |
521 | } |
522 | ||
523 | static int kvm_virtio_pci_vector_use(PCIDevice *dev, unsigned vector, | |
524 | MSIMessage msg) | |
525 | { | |
526 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
527 | VirtIODevice *vdev = proxy->vdev; | |
528 | int ret, queue_no; | |
529 | ||
530 | for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { | |
531 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
532 | break; | |
533 | } | |
534 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
535 | continue; | |
536 | } | |
537 | ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); | |
538 | if (ret < 0) { | |
539 | goto undo; | |
540 | } | |
541 | } | |
542 | return 0; | |
543 | ||
544 | undo: | |
545 | while (--queue_no >= 0) { | |
546 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
547 | continue; | |
548 | } | |
549 | kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); | |
550 | } | |
551 | return ret; | |
552 | } | |
553 | ||
554 | static void kvm_virtio_pci_vector_release(PCIDevice *dev, unsigned vector) | |
555 | { | |
556 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
557 | VirtIODevice *vdev = proxy->vdev; | |
558 | int queue_no; | |
559 | ||
560 | for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { | |
561 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
562 | break; | |
563 | } | |
564 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
565 | continue; | |
566 | } | |
567 | kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); | |
568 | } | |
569 | } | |
570 | ||
ade80dc8 MT |
571 | static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) |
572 | { | |
573 | VirtIOPCIProxy *proxy = opaque; | |
574 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
575 | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); | |
576 | ||
577 | if (assign) { | |
578 | int r = event_notifier_init(notifier, 0); | |
579 | if (r < 0) { | |
580 | return r; | |
581 | } | |
15b2bd18 | 582 | virtio_queue_set_guest_notifier_fd_handler(vq, true, false); |
ade80dc8 | 583 | } else { |
15b2bd18 | 584 | virtio_queue_set_guest_notifier_fd_handler(vq, false, false); |
ade80dc8 MT |
585 | event_notifier_cleanup(notifier); |
586 | } | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
5430a28f | 591 | static bool virtio_pci_query_guest_notifiers(void *opaque) |
592 | { | |
593 | VirtIOPCIProxy *proxy = opaque; | |
594 | return msix_enabled(&proxy->pci_dev); | |
595 | } | |
596 | ||
54dd9321 MT |
597 | static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
598 | { | |
599 | VirtIOPCIProxy *proxy = opaque; | |
600 | VirtIODevice *vdev = proxy->vdev; | |
601 | int r, n; | |
602 | ||
7d37d351 | 603 | /* Must unset vector notifier while guest notifier is still assigned */ |
614e41bc | 604 | if (kvm_msi_via_irqfd_enabled() && !assign) { |
7d37d351 JK |
605 | msix_unset_vector_notifiers(&proxy->pci_dev); |
606 | g_free(proxy->vector_irqfd); | |
607 | proxy->vector_irqfd = NULL; | |
608 | } | |
609 | ||
54dd9321 MT |
610 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
611 | if (!virtio_queue_get_num(vdev, n)) { | |
612 | break; | |
613 | } | |
614 | ||
615 | r = virtio_pci_set_guest_notifier(opaque, n, assign); | |
616 | if (r < 0) { | |
617 | goto assign_error; | |
618 | } | |
619 | } | |
620 | ||
7d37d351 | 621 | /* Must set vector notifier after guest notifier has been assigned */ |
614e41bc | 622 | if (kvm_msi_via_irqfd_enabled() && assign) { |
7d37d351 JK |
623 | proxy->vector_irqfd = |
624 | g_malloc0(sizeof(*proxy->vector_irqfd) * | |
625 | msix_nr_vectors_allocated(&proxy->pci_dev)); | |
626 | r = msix_set_vector_notifiers(&proxy->pci_dev, | |
627 | kvm_virtio_pci_vector_use, | |
628 | kvm_virtio_pci_vector_release); | |
629 | if (r < 0) { | |
630 | goto assign_error; | |
631 | } | |
632 | } | |
633 | ||
54dd9321 MT |
634 | return 0; |
635 | ||
636 | assign_error: | |
637 | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ | |
7d37d351 | 638 | assert(assign); |
54dd9321 MT |
639 | while (--n >= 0) { |
640 | virtio_pci_set_guest_notifier(opaque, n, !assign); | |
641 | } | |
642 | return r; | |
643 | } | |
644 | ||
ade80dc8 MT |
645 | static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
646 | { | |
647 | VirtIOPCIProxy *proxy = opaque; | |
25db9ebe SH |
648 | |
649 | /* Stop using ioeventfd for virtqueue kick if the device starts using host | |
650 | * notifiers. This makes it easy to avoid stepping on each others' toes. | |
651 | */ | |
652 | proxy->ioeventfd_disabled = assign; | |
ade80dc8 | 653 | if (assign) { |
25db9ebe SH |
654 | virtio_pci_stop_ioeventfd(proxy); |
655 | } | |
656 | /* We don't need to start here: it's not needed because backend | |
657 | * currently only stops on status change away from ok, | |
658 | * reset, vmstop and such. If we do add code to start here, | |
659 | * need to check vmstate, device state etc. */ | |
26b9b5fe | 660 | return virtio_pci_set_host_notifier_internal(proxy, n, assign, false); |
25db9ebe SH |
661 | } |
662 | ||
663 | static void virtio_pci_vmstate_change(void *opaque, bool running) | |
664 | { | |
665 | VirtIOPCIProxy *proxy = opaque; | |
666 | ||
667 | if (running) { | |
89c473fd MT |
668 | /* Try to find out if the guest has bus master disabled, but is |
669 | in ready state. Then we have a buggy guest OS. */ | |
670 | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && | |
671 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
672 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
673 | } | |
25db9ebe | 674 | virtio_pci_start_ioeventfd(proxy); |
ade80dc8 | 675 | } else { |
25db9ebe | 676 | virtio_pci_stop_ioeventfd(proxy); |
ade80dc8 | 677 | } |
ade80dc8 MT |
678 | } |
679 | ||
53c25cea | 680 | static const VirtIOBindings virtio_pci_bindings = { |
ff24bd58 MT |
681 | .notify = virtio_pci_notify, |
682 | .save_config = virtio_pci_save_config, | |
683 | .load_config = virtio_pci_load_config, | |
684 | .save_queue = virtio_pci_save_queue, | |
685 | .load_queue = virtio_pci_load_queue, | |
6d74ca5a | 686 | .get_features = virtio_pci_get_features, |
5430a28f | 687 | .query_guest_notifiers = virtio_pci_query_guest_notifiers, |
ade80dc8 | 688 | .set_host_notifier = virtio_pci_set_host_notifier, |
54dd9321 | 689 | .set_guest_notifiers = virtio_pci_set_guest_notifiers, |
25db9ebe | 690 | .vmstate_change = virtio_pci_vmstate_change, |
53c25cea PB |
691 | }; |
692 | ||
befeac45 | 693 | void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev) |
53c25cea PB |
694 | { |
695 | uint8_t *config; | |
696 | uint32_t size; | |
697 | ||
698 | proxy->vdev = vdev; | |
699 | ||
700 | config = proxy->pci_dev.config; | |
53c25cea | 701 | |
e75ccf2c IY |
702 | if (proxy->class_code) { |
703 | pci_config_set_class(config, proxy->class_code); | |
704 | } | |
ad3d11e6 HKR |
705 | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
706 | pci_get_word(config + PCI_VENDOR_ID)); | |
707 | pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); | |
708 | config[PCI_INTERRUPT_PIN] = 1; | |
53c25cea | 709 | |
b2357c48 AW |
710 | if (vdev->nvectors && |
711 | msix_init_exclusive_bar(&proxy->pci_dev, vdev->nvectors, 1)) { | |
aba800a3 | 712 | vdev->nvectors = 0; |
b2357c48 | 713 | } |
aba800a3 | 714 | |
ed757e14 YV |
715 | proxy->pci_dev.config_write = virtio_write_config; |
716 | ||
aba800a3 | 717 | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
53c25cea PB |
718 | if (size & (size-1)) |
719 | size = 1 << qemu_fls(size); | |
720 | ||
da146d0a AK |
721 | memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
722 | "virtio-pci", size); | |
e824b2cc AK |
723 | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, |
724 | &proxy->bar); | |
53c25cea | 725 | |
25db9ebe SH |
726 | if (!kvm_has_many_ioeventfds()) { |
727 | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; | |
728 | } | |
729 | ||
53c25cea | 730 | virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
8172539d MT |
731 | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
732 | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; | |
733 | proxy->host_features = vdev->get_features(vdev, proxy->host_features); | |
53c25cea PB |
734 | } |
735 | ||
81a322d4 | 736 | static int virtio_blk_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
737 | { |
738 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
739 | VirtIODevice *vdev; | |
740 | ||
ab73ff29 GH |
741 | if (proxy->class_code != PCI_CLASS_STORAGE_SCSI && |
742 | proxy->class_code != PCI_CLASS_STORAGE_OTHER) | |
743 | proxy->class_code = PCI_CLASS_STORAGE_SCSI; | |
53c25cea | 744 | |
12c5674b | 745 | vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk); |
ac0c14d7 MA |
746 | if (!vdev) { |
747 | return -1; | |
748 | } | |
177539e0 | 749 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 750 | virtio_init_pci(proxy, vdev); |
177539e0 GH |
751 | /* make the actual value visible */ |
752 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 753 | return 0; |
21d58b57 MM |
754 | } |
755 | ||
f90c2bcd | 756 | static void virtio_exit_pci(PCIDevice *pci_dev) |
0f457d91 | 757 | { |
da146d0a AK |
758 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
759 | ||
760 | memory_region_destroy(&proxy->bar); | |
b2357c48 | 761 | msix_uninit_exclusive_bar(pci_dev); |
0f457d91 MT |
762 | } |
763 | ||
f90c2bcd | 764 | static void virtio_blk_exit_pci(PCIDevice *pci_dev) |
56a14938 GH |
765 | { |
766 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
767 | ||
25db9ebe | 768 | virtio_pci_stop_ioeventfd(proxy); |
9d0d3138 | 769 | virtio_blk_exit(proxy->vdev); |
f90c2bcd | 770 | virtio_exit_pci(pci_dev); |
56a14938 GH |
771 | } |
772 | ||
98b19252 | 773 | static int virtio_serial_init_pci(PCIDevice *pci_dev) |
21d58b57 | 774 | { |
d6beee99 | 775 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
85c2c735 MM |
776 | VirtIODevice *vdev; |
777 | ||
d6beee99 GH |
778 | if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER && |
779 | proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ | |
780 | proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */ | |
781 | proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; | |
782 | ||
6b331efb | 783 | vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); |
25fe3654 AS |
784 | if (!vdev) { |
785 | return -1; | |
786 | } | |
573fb60c | 787 | vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
6b331efb | 788 | ? proxy->serial.max_virtserial_ports + 1 |
573fb60c | 789 | : proxy->nvectors; |
e75ccf2c | 790 | virtio_init_pci(proxy, vdev); |
a1829205 | 791 | proxy->nvectors = vdev->nvectors; |
81a322d4 | 792 | return 0; |
53c25cea PB |
793 | } |
794 | ||
f90c2bcd | 795 | static void virtio_serial_exit_pci(PCIDevice *pci_dev) |
8b53a865 AS |
796 | { |
797 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
798 | ||
32059220 | 799 | virtio_pci_stop_ioeventfd(proxy); |
8b53a865 | 800 | virtio_serial_exit(proxy->vdev); |
f90c2bcd | 801 | virtio_exit_pci(pci_dev); |
8b53a865 AS |
802 | } |
803 | ||
81a322d4 | 804 | static int virtio_net_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
805 | { |
806 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
807 | VirtIODevice *vdev; | |
808 | ||
f0c07c7c | 809 | vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); |
a1e0fea5 | 810 | |
97b15621 | 811 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 812 | virtio_init_pci(proxy, vdev); |
a1e0fea5 GH |
813 | |
814 | /* make the actual value visible */ | |
815 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 816 | return 0; |
53c25cea PB |
817 | } |
818 | ||
f90c2bcd | 819 | static void virtio_net_exit_pci(PCIDevice *pci_dev) |
97b15621 GH |
820 | { |
821 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
822 | ||
25db9ebe | 823 | virtio_pci_stop_ioeventfd(proxy); |
97b15621 | 824 | virtio_net_exit(proxy->vdev); |
f90c2bcd | 825 | virtio_exit_pci(pci_dev); |
97b15621 GH |
826 | } |
827 | ||
81a322d4 | 828 | static int virtio_balloon_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
829 | { |
830 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
831 | VirtIODevice *vdev; | |
832 | ||
2ba1d381 DG |
833 | if (proxy->class_code != PCI_CLASS_OTHERS && |
834 | proxy->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */ | |
835 | proxy->class_code = PCI_CLASS_OTHERS; | |
836 | } | |
837 | ||
53c25cea | 838 | vdev = virtio_balloon_init(&pci_dev->qdev); |
f76f6655 AS |
839 | if (!vdev) { |
840 | return -1; | |
841 | } | |
e75ccf2c | 842 | virtio_init_pci(proxy, vdev); |
81a322d4 | 843 | return 0; |
53c25cea PB |
844 | } |
845 | ||
f90c2bcd | 846 | static void virtio_balloon_exit_pci(PCIDevice *pci_dev) |
855d7e25 AS |
847 | { |
848 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
849 | ||
850 | virtio_pci_stop_ioeventfd(proxy); | |
851 | virtio_balloon_exit(proxy->vdev); | |
f90c2bcd | 852 | virtio_exit_pci(pci_dev); |
855d7e25 AS |
853 | } |
854 | ||
40021f08 AL |
855 | static Property virtio_blk_properties[] = { |
856 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
12c5674b | 857 | DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf), |
e63e7fde | 858 | DEFINE_BLOCK_CHS_PROPERTIES(VirtIOPCIProxy, blk.conf), |
12c5674b | 859 | DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial), |
a6c5c84a PB |
860 | #ifdef __linux__ |
861 | DEFINE_PROP_BIT("scsi", VirtIOPCIProxy, blk.scsi, 0, true), | |
862 | #endif | |
eec7f96c | 863 | DEFINE_PROP_BIT("config-wce", VirtIOPCIProxy, blk.config_wce, 0, true), |
40021f08 AL |
864 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
865 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
866 | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), | |
867 | DEFINE_PROP_END_OF_LIST(), | |
e855761c AL |
868 | }; |
869 | ||
40021f08 AL |
870 | static void virtio_blk_class_init(ObjectClass *klass, void *data) |
871 | { | |
39bffca2 | 872 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
873 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
874 | ||
875 | k->init = virtio_blk_init_pci; | |
876 | k->exit = virtio_blk_exit_pci; | |
877 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
878 | k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; | |
879 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
880 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
39bffca2 AL |
881 | dc->reset = virtio_pci_reset; |
882 | dc->props = virtio_blk_properties; | |
40021f08 AL |
883 | } |
884 | ||
39bffca2 AL |
885 | static TypeInfo virtio_blk_info = { |
886 | .name = "virtio-blk-pci", | |
887 | .parent = TYPE_PCI_DEVICE, | |
888 | .instance_size = sizeof(VirtIOPCIProxy), | |
889 | .class_init = virtio_blk_class_init, | |
40021f08 AL |
890 | }; |
891 | ||
892 | static Property virtio_net_properties[] = { | |
893 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), | |
894 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), | |
895 | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), | |
896 | DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), | |
897 | DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL), | |
898 | DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST), | |
899 | DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx), | |
900 | DEFINE_PROP_END_OF_LIST(), | |
901 | }; | |
902 | ||
903 | static void virtio_net_class_init(ObjectClass *klass, void *data) | |
904 | { | |
39bffca2 | 905 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
906 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
907 | ||
908 | k->init = virtio_net_init_pci; | |
909 | k->exit = virtio_net_exit_pci; | |
910 | k->romfile = "pxe-virtio.rom"; | |
911 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
912 | k->device_id = PCI_DEVICE_ID_VIRTIO_NET; | |
913 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
914 | k->class_id = PCI_CLASS_NETWORK_ETHERNET; | |
39bffca2 AL |
915 | dc->reset = virtio_pci_reset; |
916 | dc->props = virtio_net_properties; | |
40021f08 AL |
917 | } |
918 | ||
39bffca2 AL |
919 | static TypeInfo virtio_net_info = { |
920 | .name = "virtio-net-pci", | |
921 | .parent = TYPE_PCI_DEVICE, | |
922 | .instance_size = sizeof(VirtIOPCIProxy), | |
923 | .class_init = virtio_net_class_init, | |
e855761c AL |
924 | }; |
925 | ||
40021f08 AL |
926 | static Property virtio_serial_properties[] = { |
927 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
928 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED), | |
929 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
930 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
931 | DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), | |
932 | DEFINE_PROP_END_OF_LIST(), | |
e855761c AL |
933 | }; |
934 | ||
40021f08 AL |
935 | static void virtio_serial_class_init(ObjectClass *klass, void *data) |
936 | { | |
39bffca2 | 937 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
938 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
939 | ||
940 | k->init = virtio_serial_init_pci; | |
941 | k->exit = virtio_serial_exit_pci; | |
942 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
943 | k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; | |
944 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
945 | k->class_id = PCI_CLASS_COMMUNICATION_OTHER; | |
39bffca2 AL |
946 | dc->reset = virtio_pci_reset; |
947 | dc->props = virtio_serial_properties; | |
40021f08 AL |
948 | } |
949 | ||
39bffca2 AL |
950 | static TypeInfo virtio_serial_info = { |
951 | .name = "virtio-serial-pci", | |
952 | .parent = TYPE_PCI_DEVICE, | |
953 | .instance_size = sizeof(VirtIOPCIProxy), | |
954 | .class_init = virtio_serial_class_init, | |
40021f08 AL |
955 | }; |
956 | ||
957 | static Property virtio_balloon_properties[] = { | |
958 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
2ba1d381 | 959 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
40021f08 AL |
960 | DEFINE_PROP_END_OF_LIST(), |
961 | }; | |
962 | ||
963 | static void virtio_balloon_class_init(ObjectClass *klass, void *data) | |
964 | { | |
39bffca2 | 965 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
966 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
967 | ||
968 | k->init = virtio_balloon_init_pci; | |
969 | k->exit = virtio_balloon_exit_pci; | |
970 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
971 | k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; | |
972 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
2ba1d381 | 973 | k->class_id = PCI_CLASS_OTHERS; |
39bffca2 AL |
974 | dc->reset = virtio_pci_reset; |
975 | dc->props = virtio_balloon_properties; | |
40021f08 AL |
976 | } |
977 | ||
39bffca2 AL |
978 | static TypeInfo virtio_balloon_info = { |
979 | .name = "virtio-balloon-pci", | |
980 | .parent = TYPE_PCI_DEVICE, | |
981 | .instance_size = sizeof(VirtIOPCIProxy), | |
982 | .class_init = virtio_balloon_class_init, | |
0aab0d3a GH |
983 | }; |
984 | ||
973abc7f SH |
985 | static int virtio_scsi_init_pci(PCIDevice *pci_dev) |
986 | { | |
987 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
988 | VirtIODevice *vdev; | |
989 | ||
990 | vdev = virtio_scsi_init(&pci_dev->qdev, &proxy->scsi); | |
991 | if (!vdev) { | |
992 | return -EINVAL; | |
993 | } | |
994 | ||
4c205d0c PB |
995 | vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
996 | ? proxy->scsi.num_queues + 3 | |
997 | : proxy->nvectors; | |
973abc7f SH |
998 | virtio_init_pci(proxy, vdev); |
999 | ||
1000 | /* make the actual value visible */ | |
1001 | proxy->nvectors = vdev->nvectors; | |
1002 | return 0; | |
1003 | } | |
1004 | ||
f90c2bcd | 1005 | static void virtio_scsi_exit_pci(PCIDevice *pci_dev) |
973abc7f SH |
1006 | { |
1007 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
1008 | ||
1009 | virtio_scsi_exit(proxy->vdev); | |
f90c2bcd | 1010 | virtio_exit_pci(pci_dev); |
973abc7f SH |
1011 | } |
1012 | ||
1013 | static Property virtio_scsi_properties[] = { | |
3f910904 | 1014 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
4c205d0c | 1015 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED), |
973abc7f SH |
1016 | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi), |
1017 | DEFINE_PROP_END_OF_LIST(), | |
1018 | }; | |
1019 | ||
1020 | static void virtio_scsi_class_init(ObjectClass *klass, void *data) | |
1021 | { | |
1022 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1023 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1024 | ||
1025 | k->init = virtio_scsi_init_pci; | |
1026 | k->exit = virtio_scsi_exit_pci; | |
1027 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1028 | k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
1029 | k->revision = 0x00; | |
1030 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
1031 | dc->reset = virtio_pci_reset; | |
1032 | dc->props = virtio_scsi_properties; | |
1033 | } | |
1034 | ||
1035 | static TypeInfo virtio_scsi_info = { | |
1036 | .name = "virtio-scsi-pci", | |
1037 | .parent = TYPE_PCI_DEVICE, | |
1038 | .instance_size = sizeof(VirtIOPCIProxy), | |
1039 | .class_init = virtio_scsi_class_init, | |
1040 | }; | |
1041 | ||
83f7d43a | 1042 | static void virtio_pci_register_types(void) |
53c25cea | 1043 | { |
39bffca2 | 1044 | type_register_static(&virtio_blk_info); |
39bffca2 | 1045 | type_register_static(&virtio_net_info); |
39bffca2 | 1046 | type_register_static(&virtio_serial_info); |
39bffca2 | 1047 | type_register_static(&virtio_balloon_info); |
973abc7f | 1048 | type_register_static(&virtio_scsi_info); |
53c25cea PB |
1049 | } |
1050 | ||
83f7d43a | 1051 | type_init(virtio_pci_register_types) |