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Commit | Line | Data |
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53c25cea PB |
1 | /* |
2 | * Virtio PCI Bindings | |
3 | * | |
4 | * Copyright IBM, Corp. 2007 | |
5 | * Copyright (c) 2009 CodeSourcery | |
6 | * | |
7 | * Authors: | |
8 | * Anthony Liguori <aliguori@us.ibm.com> | |
9 | * Paul Brook <paul@codesourcery.com> | |
10 | * | |
11 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
12 | * the COPYING file in the top-level directory. | |
13 | * | |
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 | ||
0d09e41a PB |
20 | #include "hw/virtio/virtio.h" |
21 | #include "hw/virtio/virtio-blk.h" | |
22 | #include "hw/virtio/virtio-net.h" | |
23 | #include "hw/virtio/virtio-serial.h" | |
24 | #include "hw/virtio/virtio-scsi.h" | |
25 | #include "hw/virtio/virtio-balloon.h" | |
83c9f4ca | 26 | #include "hw/pci/pci.h" |
1de7afc9 | 27 | #include "qemu/error-report.h" |
83c9f4ca PB |
28 | #include "hw/pci/msi.h" |
29 | #include "hw/pci/msix.h" | |
30 | #include "hw/loader.h" | |
9c17d615 PB |
31 | #include "sysemu/kvm.h" |
32 | #include "sysemu/blockdev.h" | |
47b43a1f | 33 | #include "virtio-pci.h" |
1de7afc9 | 34 | #include "qemu/range.h" |
0d09e41a | 35 | #include "hw/virtio/virtio-bus.h" |
24a6e7f4 | 36 | #include "qapi/visitor.h" |
53c25cea PB |
37 | |
38 | /* from Linux's linux/virtio_pci.h */ | |
39 | ||
40 | /* A 32-bit r/o bitmask of the features supported by the host */ | |
41 | #define VIRTIO_PCI_HOST_FEATURES 0 | |
42 | ||
43 | /* A 32-bit r/w bitmask of features activated by the guest */ | |
44 | #define VIRTIO_PCI_GUEST_FEATURES 4 | |
45 | ||
46 | /* A 32-bit r/w PFN for the currently selected queue */ | |
47 | #define VIRTIO_PCI_QUEUE_PFN 8 | |
48 | ||
49 | /* A 16-bit r/o queue size for the currently selected queue */ | |
50 | #define VIRTIO_PCI_QUEUE_NUM 12 | |
51 | ||
52 | /* A 16-bit r/w queue selector */ | |
53 | #define VIRTIO_PCI_QUEUE_SEL 14 | |
54 | ||
55 | /* A 16-bit r/w queue notifier */ | |
56 | #define VIRTIO_PCI_QUEUE_NOTIFY 16 | |
57 | ||
58 | /* An 8-bit device status register. */ | |
59 | #define VIRTIO_PCI_STATUS 18 | |
60 | ||
61 | /* An 8-bit r/o interrupt status register. Reading the value will return the | |
62 | * current contents of the ISR and will also clear it. This is effectively | |
63 | * a read-and-acknowledge. */ | |
64 | #define VIRTIO_PCI_ISR 19 | |
65 | ||
aba800a3 MT |
66 | /* MSI-X registers: only enabled if MSI-X is enabled. */ |
67 | /* A 16-bit vector for configuration changes. */ | |
68 | #define VIRTIO_MSI_CONFIG_VECTOR 20 | |
69 | /* A 16-bit vector for selected queue notifications. */ | |
70 | #define VIRTIO_MSI_QUEUE_VECTOR 22 | |
71 | ||
72 | /* Config space size */ | |
73 | #define VIRTIO_PCI_CONFIG_NOMSI 20 | |
74 | #define VIRTIO_PCI_CONFIG_MSI 24 | |
75 | #define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \ | |
76 | VIRTIO_PCI_CONFIG_MSI : \ | |
77 | VIRTIO_PCI_CONFIG_NOMSI) | |
78 | ||
79 | /* The remaining space is defined by each driver as the per-driver | |
80 | * configuration space */ | |
81 | #define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \ | |
82 | VIRTIO_PCI_CONFIG_MSI : \ | |
83 | VIRTIO_PCI_CONFIG_NOMSI) | |
53c25cea | 84 | |
53c25cea PB |
85 | /* How many bits to shift physical queue address written to QUEUE_PFN. |
86 | * 12 is historical, and due to x86 page size. */ | |
87 | #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 | |
88 | ||
3dbca8e6 SH |
89 | /* Flags track per-device state like workarounds for quirks in older guests. */ |
90 | #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) | |
c81131db | 91 | |
8e4a424b BS |
92 | /* HACK for virtio to determine if it's running a big endian guest */ |
93 | bool virtio_is_big_endian(void); | |
94 | ||
ac7af112 AF |
95 | static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size, |
96 | VirtIOPCIProxy *dev); | |
d51fcfac | 97 | |
53c25cea | 98 | /* virtio device */ |
d2a0ccc6 MT |
99 | /* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */ |
100 | static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d) | |
101 | { | |
102 | return container_of(d, VirtIOPCIProxy, pci_dev.qdev); | |
103 | } | |
53c25cea | 104 | |
d2a0ccc6 MT |
105 | /* DeviceState to VirtIOPCIProxy. Note: used on datapath, |
106 | * be careful and test performance if you change this. | |
107 | */ | |
108 | static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d) | |
53c25cea | 109 | { |
d2a0ccc6 MT |
110 | return container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
111 | } | |
112 | ||
113 | static void virtio_pci_notify(DeviceState *d, uint16_t vector) | |
114 | { | |
115 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d); | |
aba800a3 MT |
116 | if (msix_enabled(&proxy->pci_dev)) |
117 | msix_notify(&proxy->pci_dev, vector); | |
118 | else | |
119 | qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); | |
53c25cea PB |
120 | } |
121 | ||
d2a0ccc6 | 122 | static void virtio_pci_save_config(DeviceState *d, QEMUFile *f) |
ff24bd58 | 123 | { |
d2a0ccc6 | 124 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
ff24bd58 MT |
125 | pci_device_save(&proxy->pci_dev, f); |
126 | msix_save(&proxy->pci_dev, f); | |
127 | if (msix_present(&proxy->pci_dev)) | |
128 | qemu_put_be16(f, proxy->vdev->config_vector); | |
129 | } | |
130 | ||
d2a0ccc6 | 131 | static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f) |
ff24bd58 | 132 | { |
d2a0ccc6 | 133 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
ff24bd58 MT |
134 | if (msix_present(&proxy->pci_dev)) |
135 | qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); | |
136 | } | |
137 | ||
d2a0ccc6 | 138 | static int virtio_pci_load_config(DeviceState *d, QEMUFile *f) |
ff24bd58 | 139 | { |
d2a0ccc6 | 140 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
ff24bd58 MT |
141 | int ret; |
142 | ret = pci_device_load(&proxy->pci_dev, f); | |
e6da7680 | 143 | if (ret) { |
ff24bd58 | 144 | return ret; |
e6da7680 | 145 | } |
3cac001e | 146 | msix_unuse_all_vectors(&proxy->pci_dev); |
ff24bd58 | 147 | msix_load(&proxy->pci_dev, f); |
e6da7680 | 148 | if (msix_present(&proxy->pci_dev)) { |
ff24bd58 | 149 | qemu_get_be16s(f, &proxy->vdev->config_vector); |
e6da7680 MT |
150 | } else { |
151 | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; | |
152 | } | |
153 | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { | |
154 | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); | |
155 | } | |
ff24bd58 MT |
156 | return 0; |
157 | } | |
158 | ||
d2a0ccc6 | 159 | static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) |
ff24bd58 | 160 | { |
d2a0ccc6 | 161 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
ff24bd58 | 162 | uint16_t vector; |
e6da7680 MT |
163 | if (msix_present(&proxy->pci_dev)) { |
164 | qemu_get_be16s(f, &vector); | |
165 | } else { | |
166 | vector = VIRTIO_NO_VECTOR; | |
167 | } | |
ff24bd58 | 168 | virtio_queue_set_vector(proxy->vdev, n, vector); |
e6da7680 MT |
169 | if (vector != VIRTIO_NO_VECTOR) { |
170 | return msix_vector_use(&proxy->pci_dev, vector); | |
171 | } | |
ff24bd58 MT |
172 | return 0; |
173 | } | |
174 | ||
25db9ebe | 175 | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
26b9b5fe | 176 | int n, bool assign, bool set_handler) |
25db9ebe SH |
177 | { |
178 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
179 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
da146d0a AK |
180 | int r = 0; |
181 | ||
25db9ebe SH |
182 | if (assign) { |
183 | r = event_notifier_init(notifier, 1); | |
184 | if (r < 0) { | |
b36e3914 MT |
185 | error_report("%s: unable to init event notifier: %d", |
186 | __func__, r); | |
25db9ebe SH |
187 | return r; |
188 | } | |
26b9b5fe | 189 | virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); |
da146d0a | 190 | memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
753d5e14 | 191 | true, n, notifier); |
25db9ebe | 192 | } else { |
da146d0a | 193 | memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
753d5e14 | 194 | true, n, notifier); |
26b9b5fe | 195 | virtio_queue_set_host_notifier_fd_handler(vq, false, false); |
25db9ebe SH |
196 | event_notifier_cleanup(notifier); |
197 | } | |
198 | return r; | |
199 | } | |
200 | ||
b36e3914 | 201 | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe SH |
202 | { |
203 | int n, r; | |
204 | ||
205 | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || | |
206 | proxy->ioeventfd_disabled || | |
207 | proxy->ioeventfd_started) { | |
b36e3914 | 208 | return; |
25db9ebe SH |
209 | } |
210 | ||
211 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
212 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
213 | continue; | |
214 | } | |
215 | ||
26b9b5fe | 216 | r = virtio_pci_set_host_notifier_internal(proxy, n, true, true); |
25db9ebe SH |
217 | if (r < 0) { |
218 | goto assign_error; | |
219 | } | |
25db9ebe SH |
220 | } |
221 | proxy->ioeventfd_started = true; | |
b36e3914 | 222 | return; |
25db9ebe SH |
223 | |
224 | assign_error: | |
225 | while (--n >= 0) { | |
226 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
227 | continue; | |
228 | } | |
229 | ||
26b9b5fe | 230 | r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
b36e3914 | 231 | assert(r >= 0); |
25db9ebe SH |
232 | } |
233 | proxy->ioeventfd_started = false; | |
b36e3914 | 234 | error_report("%s: failed. Fallback to a userspace (slower).", __func__); |
25db9ebe SH |
235 | } |
236 | ||
b36e3914 | 237 | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe | 238 | { |
b36e3914 | 239 | int r; |
25db9ebe SH |
240 | int n; |
241 | ||
242 | if (!proxy->ioeventfd_started) { | |
b36e3914 | 243 | return; |
25db9ebe SH |
244 | } |
245 | ||
246 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
247 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
248 | continue; | |
249 | } | |
250 | ||
26b9b5fe | 251 | r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
b36e3914 | 252 | assert(r >= 0); |
25db9ebe SH |
253 | } |
254 | proxy->ioeventfd_started = false; | |
25db9ebe SH |
255 | } |
256 | ||
53c25cea PB |
257 | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
258 | { | |
259 | VirtIOPCIProxy *proxy = opaque; | |
260 | VirtIODevice *vdev = proxy->vdev; | |
a8170e5e | 261 | hwaddr pa; |
53c25cea | 262 | |
53c25cea PB |
263 | switch (addr) { |
264 | case VIRTIO_PCI_GUEST_FEATURES: | |
181103cd FK |
265 | /* Guest does not negotiate properly? We have to assume nothing. */ |
266 | if (val & (1 << VIRTIO_F_BAD_FEATURE)) { | |
267 | val = virtio_bus_get_vdev_bad_features(&proxy->bus); | |
268 | } | |
ad0c9332 | 269 | virtio_set_features(vdev, val); |
53c25cea PB |
270 | break; |
271 | case VIRTIO_PCI_QUEUE_PFN: | |
a8170e5e | 272 | pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
1b8e9b27 | 273 | if (pa == 0) { |
25db9ebe | 274 | virtio_pci_stop_ioeventfd(proxy); |
1b8e9b27 MT |
275 | virtio_reset(proxy->vdev); |
276 | msix_unuse_all_vectors(&proxy->pci_dev); | |
277 | } | |
7055e687 MT |
278 | else |
279 | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); | |
53c25cea PB |
280 | break; |
281 | case VIRTIO_PCI_QUEUE_SEL: | |
282 | if (val < VIRTIO_PCI_QUEUE_MAX) | |
283 | vdev->queue_sel = val; | |
284 | break; | |
285 | case VIRTIO_PCI_QUEUE_NOTIFY: | |
7157e2e2 SH |
286 | if (val < VIRTIO_PCI_QUEUE_MAX) { |
287 | virtio_queue_notify(vdev, val); | |
288 | } | |
53c25cea PB |
289 | break; |
290 | case VIRTIO_PCI_STATUS: | |
25db9ebe SH |
291 | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) { |
292 | virtio_pci_stop_ioeventfd(proxy); | |
293 | } | |
294 | ||
3e607cb5 | 295 | virtio_set_status(vdev, val & 0xFF); |
25db9ebe SH |
296 | |
297 | if (val & VIRTIO_CONFIG_S_DRIVER_OK) { | |
298 | virtio_pci_start_ioeventfd(proxy); | |
299 | } | |
300 | ||
1b8e9b27 MT |
301 | if (vdev->status == 0) { |
302 | virtio_reset(proxy->vdev); | |
303 | msix_unuse_all_vectors(&proxy->pci_dev); | |
304 | } | |
c81131db AG |
305 | |
306 | /* Linux before 2.6.34 sets the device as OK without enabling | |
307 | the PCI device bus master bit. In this case we need to disable | |
308 | some safety checks. */ | |
309 | if ((val & VIRTIO_CONFIG_S_DRIVER_OK) && | |
310 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
3dbca8e6 | 311 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
c81131db | 312 | } |
53c25cea | 313 | break; |
aba800a3 MT |
314 | case VIRTIO_MSI_CONFIG_VECTOR: |
315 | msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); | |
316 | /* Make it possible for guest to discover an error took place. */ | |
317 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
318 | val = VIRTIO_NO_VECTOR; | |
319 | vdev->config_vector = val; | |
320 | break; | |
321 | case VIRTIO_MSI_QUEUE_VECTOR: | |
322 | msix_vector_unuse(&proxy->pci_dev, | |
323 | virtio_queue_vector(vdev, vdev->queue_sel)); | |
324 | /* Make it possible for guest to discover an error took place. */ | |
325 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
326 | val = VIRTIO_NO_VECTOR; | |
327 | virtio_queue_set_vector(vdev, vdev->queue_sel, val); | |
328 | break; | |
329 | default: | |
4e02d460 SH |
330 | error_report("%s: unexpected address 0x%x value 0x%x", |
331 | __func__, addr, val); | |
aba800a3 | 332 | break; |
53c25cea PB |
333 | } |
334 | } | |
335 | ||
aba800a3 | 336 | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) |
53c25cea | 337 | { |
53c25cea PB |
338 | VirtIODevice *vdev = proxy->vdev; |
339 | uint32_t ret = 0xFFFFFFFF; | |
340 | ||
53c25cea PB |
341 | switch (addr) { |
342 | case VIRTIO_PCI_HOST_FEATURES: | |
8172539d | 343 | ret = proxy->host_features; |
53c25cea PB |
344 | break; |
345 | case VIRTIO_PCI_GUEST_FEATURES: | |
704a76fc | 346 | ret = vdev->guest_features; |
53c25cea PB |
347 | break; |
348 | case VIRTIO_PCI_QUEUE_PFN: | |
349 | ret = virtio_queue_get_addr(vdev, vdev->queue_sel) | |
350 | >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; | |
351 | break; | |
352 | case VIRTIO_PCI_QUEUE_NUM: | |
353 | ret = virtio_queue_get_num(vdev, vdev->queue_sel); | |
354 | break; | |
355 | case VIRTIO_PCI_QUEUE_SEL: | |
356 | ret = vdev->queue_sel; | |
357 | break; | |
358 | case VIRTIO_PCI_STATUS: | |
359 | ret = vdev->status; | |
360 | break; | |
361 | case VIRTIO_PCI_ISR: | |
362 | /* reading from the ISR also clears it. */ | |
363 | ret = vdev->isr; | |
364 | vdev->isr = 0; | |
7055e687 | 365 | qemu_set_irq(proxy->pci_dev.irq[0], 0); |
53c25cea | 366 | break; |
aba800a3 MT |
367 | case VIRTIO_MSI_CONFIG_VECTOR: |
368 | ret = vdev->config_vector; | |
369 | break; | |
370 | case VIRTIO_MSI_QUEUE_VECTOR: | |
371 | ret = virtio_queue_vector(vdev, vdev->queue_sel); | |
372 | break; | |
53c25cea PB |
373 | default: |
374 | break; | |
375 | } | |
376 | ||
377 | return ret; | |
378 | } | |
379 | ||
df6db5b3 AG |
380 | static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, |
381 | unsigned size) | |
53c25cea PB |
382 | { |
383 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 384 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
df6db5b3 | 385 | uint64_t val = 0; |
aba800a3 | 386 | if (addr < config) { |
df6db5b3 | 387 | return virtio_ioport_read(proxy, addr); |
aba800a3 MT |
388 | } |
389 | addr -= config; | |
53c25cea | 390 | |
df6db5b3 AG |
391 | switch (size) { |
392 | case 1: | |
393 | val = virtio_config_readb(proxy->vdev, addr); | |
394 | break; | |
395 | case 2: | |
396 | val = virtio_config_readw(proxy->vdev, addr); | |
8e4a424b BS |
397 | if (virtio_is_big_endian()) { |
398 | val = bswap16(val); | |
399 | } | |
df6db5b3 AG |
400 | break; |
401 | case 4: | |
402 | val = virtio_config_readl(proxy->vdev, addr); | |
8e4a424b BS |
403 | if (virtio_is_big_endian()) { |
404 | val = bswap32(val); | |
405 | } | |
df6db5b3 | 406 | break; |
82afa586 | 407 | } |
df6db5b3 | 408 | return val; |
53c25cea PB |
409 | } |
410 | ||
df6db5b3 AG |
411 | static void virtio_pci_config_write(void *opaque, hwaddr addr, |
412 | uint64_t val, unsigned size) | |
53c25cea PB |
413 | { |
414 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 415 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
416 | if (addr < config) { |
417 | virtio_ioport_write(proxy, addr, val); | |
418 | return; | |
419 | } | |
420 | addr -= config; | |
df6db5b3 AG |
421 | /* |
422 | * Virtio-PCI is odd. Ioports are LE but config space is target native | |
423 | * endian. | |
424 | */ | |
425 | switch (size) { | |
426 | case 1: | |
427 | virtio_config_writeb(proxy->vdev, addr, val); | |
428 | break; | |
429 | case 2: | |
8e4a424b BS |
430 | if (virtio_is_big_endian()) { |
431 | val = bswap16(val); | |
432 | } | |
df6db5b3 AG |
433 | virtio_config_writew(proxy->vdev, addr, val); |
434 | break; | |
435 | case 4: | |
8e4a424b BS |
436 | if (virtio_is_big_endian()) { |
437 | val = bswap32(val); | |
438 | } | |
df6db5b3 AG |
439 | virtio_config_writel(proxy->vdev, addr, val); |
440 | break; | |
82afa586 | 441 | } |
53c25cea PB |
442 | } |
443 | ||
da146d0a | 444 | static const MemoryRegionOps virtio_pci_config_ops = { |
df6db5b3 AG |
445 | .read = virtio_pci_config_read, |
446 | .write = virtio_pci_config_write, | |
447 | .impl = { | |
448 | .min_access_size = 1, | |
449 | .max_access_size = 4, | |
450 | }, | |
8e4a424b | 451 | .endianness = DEVICE_LITTLE_ENDIAN, |
da146d0a | 452 | }; |
aba800a3 MT |
453 | |
454 | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, | |
455 | uint32_t val, int len) | |
456 | { | |
ed757e14 YV |
457 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
458 | ||
1129714f MT |
459 | pci_default_write_config(pci_dev, address, val, len); |
460 | ||
461 | if (range_covers_byte(address, len, PCI_COMMAND) && | |
462 | !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && | |
463 | !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { | |
464 | virtio_pci_stop_ioeventfd(proxy); | |
465 | virtio_set_status(proxy->vdev, | |
466 | proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); | |
ed757e14 | 467 | } |
53c25cea PB |
468 | } |
469 | ||
d2a0ccc6 | 470 | static unsigned virtio_pci_get_features(DeviceState *d) |
6d74ca5a | 471 | { |
d2a0ccc6 | 472 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
8172539d | 473 | return proxy->host_features; |
6d74ca5a MT |
474 | } |
475 | ||
7d37d351 JK |
476 | static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, |
477 | unsigned int queue_no, | |
478 | unsigned int vector, | |
479 | MSIMessage msg) | |
480 | { | |
7d37d351 | 481 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
15b2bd18 | 482 | int ret; |
7d37d351 JK |
483 | |
484 | if (irqfd->users == 0) { | |
485 | ret = kvm_irqchip_add_msi_route(kvm_state, msg); | |
486 | if (ret < 0) { | |
487 | return ret; | |
488 | } | |
489 | irqfd->virq = ret; | |
490 | } | |
491 | irqfd->users++; | |
7d37d351 JK |
492 | return 0; |
493 | } | |
494 | ||
495 | static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, | |
7d37d351 | 496 | unsigned int vector) |
774345f9 MT |
497 | { |
498 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; | |
499 | if (--irqfd->users == 0) { | |
500 | kvm_irqchip_release_virq(kvm_state, irqfd->virq); | |
501 | } | |
502 | } | |
503 | ||
f1d0f15a MT |
504 | static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy, |
505 | unsigned int queue_no, | |
506 | unsigned int vector) | |
507 | { | |
508 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; | |
509 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
510 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); | |
511 | int ret; | |
ca916d37 | 512 | ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, NULL, irqfd->virq); |
f1d0f15a MT |
513 | return ret; |
514 | } | |
515 | ||
516 | static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy, | |
517 | unsigned int queue_no, | |
518 | unsigned int vector) | |
7d37d351 JK |
519 | { |
520 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
15b2bd18 | 521 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
7d37d351 | 522 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
15b2bd18 | 523 | int ret; |
7d37d351 | 524 | |
b131c74a | 525 | ret = kvm_irqchip_remove_irqfd_notifier(kvm_state, n, irqfd->virq); |
7d37d351 | 526 | assert(ret == 0); |
f1d0f15a | 527 | } |
7d37d351 | 528 | |
774345f9 MT |
529 | static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs) |
530 | { | |
531 | PCIDevice *dev = &proxy->pci_dev; | |
532 | VirtIODevice *vdev = proxy->vdev; | |
181103cd | 533 | VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); |
774345f9 MT |
534 | unsigned int vector; |
535 | int ret, queue_no; | |
536 | MSIMessage msg; | |
537 | ||
538 | for (queue_no = 0; queue_no < nvqs; queue_no++) { | |
539 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
540 | break; | |
541 | } | |
542 | vector = virtio_queue_vector(vdev, queue_no); | |
543 | if (vector >= msix_nr_vectors_allocated(dev)) { | |
544 | continue; | |
545 | } | |
546 | msg = msix_get_message(dev, vector); | |
547 | ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); | |
548 | if (ret < 0) { | |
549 | goto undo; | |
7d37d351 | 550 | } |
f1d0f15a MT |
551 | /* If guest supports masking, set up irqfd now. |
552 | * Otherwise, delay until unmasked in the frontend. | |
553 | */ | |
181103cd | 554 | if (k->guest_notifier_mask) { |
f1d0f15a MT |
555 | ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); |
556 | if (ret < 0) { | |
557 | kvm_virtio_pci_vq_vector_release(proxy, vector); | |
558 | goto undo; | |
559 | } | |
560 | } | |
7d37d351 | 561 | } |
7d37d351 | 562 | return 0; |
774345f9 MT |
563 | |
564 | undo: | |
565 | while (--queue_no >= 0) { | |
566 | vector = virtio_queue_vector(vdev, queue_no); | |
567 | if (vector >= msix_nr_vectors_allocated(dev)) { | |
568 | continue; | |
569 | } | |
181103cd | 570 | if (k->guest_notifier_mask) { |
e387f99e | 571 | kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
f1d0f15a | 572 | } |
774345f9 MT |
573 | kvm_virtio_pci_vq_vector_release(proxy, vector); |
574 | } | |
575 | return ret; | |
7d37d351 JK |
576 | } |
577 | ||
774345f9 MT |
578 | static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs) |
579 | { | |
580 | PCIDevice *dev = &proxy->pci_dev; | |
581 | VirtIODevice *vdev = proxy->vdev; | |
582 | unsigned int vector; | |
583 | int queue_no; | |
181103cd | 584 | VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); |
774345f9 MT |
585 | |
586 | for (queue_no = 0; queue_no < nvqs; queue_no++) { | |
587 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
588 | break; | |
589 | } | |
590 | vector = virtio_queue_vector(vdev, queue_no); | |
591 | if (vector >= msix_nr_vectors_allocated(dev)) { | |
592 | continue; | |
593 | } | |
f1d0f15a MT |
594 | /* If guest supports masking, clean up irqfd now. |
595 | * Otherwise, it was cleaned when masked in the frontend. | |
596 | */ | |
181103cd | 597 | if (k->guest_notifier_mask) { |
e387f99e | 598 | kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
f1d0f15a | 599 | } |
774345f9 MT |
600 | kvm_virtio_pci_vq_vector_release(proxy, vector); |
601 | } | |
602 | } | |
603 | ||
a38b2c49 MT |
604 | static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy, |
605 | unsigned int queue_no, | |
606 | unsigned int vector, | |
607 | MSIMessage msg) | |
774345f9 | 608 | { |
181103cd | 609 | VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(proxy->vdev); |
774345f9 MT |
610 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
611 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); | |
a38b2c49 | 612 | VirtIOIRQFD *irqfd; |
53510bfc | 613 | int ret = 0; |
774345f9 | 614 | |
a38b2c49 MT |
615 | if (proxy->vector_irqfd) { |
616 | irqfd = &proxy->vector_irqfd[vector]; | |
617 | if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) { | |
618 | ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg); | |
619 | if (ret < 0) { | |
620 | return ret; | |
621 | } | |
774345f9 MT |
622 | } |
623 | } | |
624 | ||
f1d0f15a MT |
625 | /* If guest supports masking, irqfd is already setup, unmask it. |
626 | * Otherwise, set it up now. | |
627 | */ | |
181103cd FK |
628 | if (k->guest_notifier_mask) { |
629 | k->guest_notifier_mask(proxy->vdev, queue_no, false); | |
f1d0f15a | 630 | /* Test after unmasking to avoid losing events. */ |
181103cd FK |
631 | if (k->guest_notifier_pending && |
632 | k->guest_notifier_pending(proxy->vdev, queue_no)) { | |
f1d0f15a MT |
633 | event_notifier_set(n); |
634 | } | |
635 | } else { | |
636 | ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); | |
7d37d351 | 637 | } |
774345f9 | 638 | return ret; |
7d37d351 JK |
639 | } |
640 | ||
a38b2c49 | 641 | static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy, |
7d37d351 JK |
642 | unsigned int queue_no, |
643 | unsigned int vector) | |
644 | { | |
181103cd FK |
645 | VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(proxy->vdev); |
646 | ||
f1d0f15a MT |
647 | /* If guest supports masking, keep irqfd but mask it. |
648 | * Otherwise, clean it up now. | |
649 | */ | |
181103cd FK |
650 | if (k->guest_notifier_mask) { |
651 | k->guest_notifier_mask(proxy->vdev, queue_no, true); | |
f1d0f15a | 652 | } else { |
e387f99e | 653 | kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
f1d0f15a | 654 | } |
7d37d351 JK |
655 | } |
656 | ||
a38b2c49 MT |
657 | static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector, |
658 | MSIMessage msg) | |
7d37d351 JK |
659 | { |
660 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
661 | VirtIODevice *vdev = proxy->vdev; | |
662 | int ret, queue_no; | |
663 | ||
2d620f59 | 664 | for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
7d37d351 JK |
665 | if (!virtio_queue_get_num(vdev, queue_no)) { |
666 | break; | |
667 | } | |
668 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
669 | continue; | |
670 | } | |
a38b2c49 | 671 | ret = virtio_pci_vq_vector_unmask(proxy, queue_no, vector, msg); |
7d37d351 JK |
672 | if (ret < 0) { |
673 | goto undo; | |
674 | } | |
675 | } | |
676 | return 0; | |
677 | ||
678 | undo: | |
679 | while (--queue_no >= 0) { | |
680 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
681 | continue; | |
682 | } | |
a38b2c49 | 683 | virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
7d37d351 JK |
684 | } |
685 | return ret; | |
686 | } | |
687 | ||
a38b2c49 | 688 | static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector) |
7d37d351 JK |
689 | { |
690 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
691 | VirtIODevice *vdev = proxy->vdev; | |
692 | int queue_no; | |
693 | ||
2d620f59 | 694 | for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
7d37d351 JK |
695 | if (!virtio_queue_get_num(vdev, queue_no)) { |
696 | break; | |
697 | } | |
698 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
699 | continue; | |
700 | } | |
a38b2c49 | 701 | virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
7d37d351 JK |
702 | } |
703 | } | |
704 | ||
a38b2c49 MT |
705 | static void virtio_pci_vector_poll(PCIDevice *dev, |
706 | unsigned int vector_start, | |
707 | unsigned int vector_end) | |
89d62be9 MT |
708 | { |
709 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
710 | VirtIODevice *vdev = proxy->vdev; | |
181103cd | 711 | VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); |
89d62be9 MT |
712 | int queue_no; |
713 | unsigned int vector; | |
714 | EventNotifier *notifier; | |
715 | VirtQueue *vq; | |
716 | ||
2d620f59 | 717 | for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
89d62be9 MT |
718 | if (!virtio_queue_get_num(vdev, queue_no)) { |
719 | break; | |
720 | } | |
721 | vector = virtio_queue_vector(vdev, queue_no); | |
722 | if (vector < vector_start || vector >= vector_end || | |
723 | !msix_is_masked(dev, vector)) { | |
724 | continue; | |
725 | } | |
726 | vq = virtio_get_queue(vdev, queue_no); | |
727 | notifier = virtio_queue_get_guest_notifier(vq); | |
181103cd FK |
728 | if (k->guest_notifier_pending) { |
729 | if (k->guest_notifier_pending(vdev, queue_no)) { | |
f1d0f15a MT |
730 | msix_set_pending(dev, vector); |
731 | } | |
732 | } else if (event_notifier_test_and_clear(notifier)) { | |
89d62be9 MT |
733 | msix_set_pending(dev, vector); |
734 | } | |
735 | } | |
736 | } | |
737 | ||
738 | static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign, | |
739 | bool with_irqfd) | |
ade80dc8 | 740 | { |
d2a0ccc6 | 741 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
62c96360 | 742 | VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(proxy->vdev); |
ade80dc8 MT |
743 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
744 | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); | |
745 | ||
746 | if (assign) { | |
747 | int r = event_notifier_init(notifier, 0); | |
748 | if (r < 0) { | |
749 | return r; | |
750 | } | |
89d62be9 | 751 | virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); |
ade80dc8 | 752 | } else { |
89d62be9 | 753 | virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); |
ade80dc8 MT |
754 | event_notifier_cleanup(notifier); |
755 | } | |
756 | ||
62c96360 MT |
757 | if (!msix_enabled(&proxy->pci_dev) && vdc->guest_notifier_mask) { |
758 | vdc->guest_notifier_mask(proxy->vdev, n, !assign); | |
759 | } | |
760 | ||
ade80dc8 MT |
761 | return 0; |
762 | } | |
763 | ||
d2a0ccc6 | 764 | static bool virtio_pci_query_guest_notifiers(DeviceState *d) |
5430a28f | 765 | { |
d2a0ccc6 | 766 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
5430a28f MT |
767 | return msix_enabled(&proxy->pci_dev); |
768 | } | |
769 | ||
2d620f59 | 770 | static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) |
54dd9321 | 771 | { |
d2a0ccc6 | 772 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
54dd9321 | 773 | VirtIODevice *vdev = proxy->vdev; |
181103cd | 774 | VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); |
54dd9321 | 775 | int r, n; |
89d62be9 MT |
776 | bool with_irqfd = msix_enabled(&proxy->pci_dev) && |
777 | kvm_msi_via_irqfd_enabled(); | |
54dd9321 | 778 | |
2d620f59 MT |
779 | nvqs = MIN(nvqs, VIRTIO_PCI_QUEUE_MAX); |
780 | ||
781 | /* When deassigning, pass a consistent nvqs value | |
782 | * to avoid leaking notifiers. | |
783 | */ | |
784 | assert(assign || nvqs == proxy->nvqs_with_notifiers); | |
785 | ||
786 | proxy->nvqs_with_notifiers = nvqs; | |
787 | ||
7d37d351 | 788 | /* Must unset vector notifier while guest notifier is still assigned */ |
181103cd | 789 | if ((proxy->vector_irqfd || k->guest_notifier_mask) && !assign) { |
7d37d351 | 790 | msix_unset_vector_notifiers(&proxy->pci_dev); |
a38b2c49 MT |
791 | if (proxy->vector_irqfd) { |
792 | kvm_virtio_pci_vector_release(proxy, nvqs); | |
793 | g_free(proxy->vector_irqfd); | |
794 | proxy->vector_irqfd = NULL; | |
795 | } | |
7d37d351 JK |
796 | } |
797 | ||
2d620f59 | 798 | for (n = 0; n < nvqs; n++) { |
54dd9321 MT |
799 | if (!virtio_queue_get_num(vdev, n)) { |
800 | break; | |
801 | } | |
802 | ||
89d62be9 MT |
803 | r = virtio_pci_set_guest_notifier(d, n, assign, |
804 | kvm_msi_via_irqfd_enabled()); | |
54dd9321 MT |
805 | if (r < 0) { |
806 | goto assign_error; | |
807 | } | |
808 | } | |
809 | ||
7d37d351 | 810 | /* Must set vector notifier after guest notifier has been assigned */ |
181103cd | 811 | if ((with_irqfd || k->guest_notifier_mask) && assign) { |
a38b2c49 MT |
812 | if (with_irqfd) { |
813 | proxy->vector_irqfd = | |
814 | g_malloc0(sizeof(*proxy->vector_irqfd) * | |
815 | msix_nr_vectors_allocated(&proxy->pci_dev)); | |
816 | r = kvm_virtio_pci_vector_use(proxy, nvqs); | |
817 | if (r < 0) { | |
818 | goto assign_error; | |
819 | } | |
774345f9 | 820 | } |
7d37d351 | 821 | r = msix_set_vector_notifiers(&proxy->pci_dev, |
a38b2c49 MT |
822 | virtio_pci_vector_unmask, |
823 | virtio_pci_vector_mask, | |
824 | virtio_pci_vector_poll); | |
7d37d351 | 825 | if (r < 0) { |
774345f9 | 826 | goto notifiers_error; |
7d37d351 JK |
827 | } |
828 | } | |
829 | ||
54dd9321 MT |
830 | return 0; |
831 | ||
774345f9 | 832 | notifiers_error: |
a38b2c49 MT |
833 | if (with_irqfd) { |
834 | assert(assign); | |
835 | kvm_virtio_pci_vector_release(proxy, nvqs); | |
836 | } | |
774345f9 | 837 | |
54dd9321 MT |
838 | assign_error: |
839 | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ | |
7d37d351 | 840 | assert(assign); |
54dd9321 | 841 | while (--n >= 0) { |
89d62be9 | 842 | virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd); |
54dd9321 MT |
843 | } |
844 | return r; | |
845 | } | |
846 | ||
d2a0ccc6 | 847 | static int virtio_pci_set_host_notifier(DeviceState *d, int n, bool assign) |
ade80dc8 | 848 | { |
d2a0ccc6 | 849 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
25db9ebe SH |
850 | |
851 | /* Stop using ioeventfd for virtqueue kick if the device starts using host | |
852 | * notifiers. This makes it easy to avoid stepping on each others' toes. | |
853 | */ | |
854 | proxy->ioeventfd_disabled = assign; | |
ade80dc8 | 855 | if (assign) { |
25db9ebe SH |
856 | virtio_pci_stop_ioeventfd(proxy); |
857 | } | |
858 | /* We don't need to start here: it's not needed because backend | |
859 | * currently only stops on status change away from ok, | |
860 | * reset, vmstop and such. If we do add code to start here, | |
861 | * need to check vmstate, device state etc. */ | |
26b9b5fe | 862 | return virtio_pci_set_host_notifier_internal(proxy, n, assign, false); |
25db9ebe SH |
863 | } |
864 | ||
d2a0ccc6 | 865 | static void virtio_pci_vmstate_change(DeviceState *d, bool running) |
25db9ebe | 866 | { |
d2a0ccc6 | 867 | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
25db9ebe SH |
868 | |
869 | if (running) { | |
89c473fd MT |
870 | /* Try to find out if the guest has bus master disabled, but is |
871 | in ready state. Then we have a buggy guest OS. */ | |
872 | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && | |
873 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
874 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
875 | } | |
25db9ebe | 876 | virtio_pci_start_ioeventfd(proxy); |
ade80dc8 | 877 | } else { |
25db9ebe | 878 | virtio_pci_stop_ioeventfd(proxy); |
ade80dc8 | 879 | } |
ade80dc8 MT |
880 | } |
881 | ||
60653b28 | 882 | #ifdef CONFIG_VIRTFS |
234a336f | 883 | static int virtio_9p_init_pci(VirtIOPCIProxy *vpci_dev) |
60653b28 | 884 | { |
234a336f FK |
885 | V9fsPCIState *dev = VIRTIO_9P_PCI(vpci_dev); |
886 | DeviceState *vdev = DEVICE(&dev->vdev); | |
60653b28 | 887 | |
234a336f FK |
888 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
889 | if (qdev_init(vdev) < 0) { | |
890 | return -1; | |
891 | } | |
60653b28 PB |
892 | return 0; |
893 | } | |
894 | ||
234a336f FK |
895 | static Property virtio_9p_pci_properties[] = { |
896 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, | |
897 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
60653b28 PB |
898 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
899 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
234a336f | 900 | DEFINE_VIRTIO_9P_PROPERTIES(V9fsPCIState, vdev.fsconf), |
60653b28 PB |
901 | DEFINE_PROP_END_OF_LIST(), |
902 | }; | |
903 | ||
234a336f | 904 | static void virtio_9p_pci_class_init(ObjectClass *klass, void *data) |
60653b28 PB |
905 | { |
906 | DeviceClass *dc = DEVICE_CLASS(klass); | |
234a336f FK |
907 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
908 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
60653b28 PB |
909 | |
910 | k->init = virtio_9p_init_pci; | |
234a336f FK |
911 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
912 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_9P; | |
913 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; | |
914 | pcidev_k->class_id = 0x2; | |
125ee0ed | 915 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
234a336f | 916 | dc->props = virtio_9p_pci_properties; |
60653b28 PB |
917 | } |
918 | ||
234a336f FK |
919 | static void virtio_9p_pci_instance_init(Object *obj) |
920 | { | |
921 | V9fsPCIState *dev = VIRTIO_9P_PCI(obj); | |
e65177a8 | 922 | object_initialize(&dev->vdev, TYPE_VIRTIO_9P); |
234a336f FK |
923 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
924 | } | |
925 | ||
926 | static const TypeInfo virtio_9p_pci_info = { | |
927 | .name = TYPE_VIRTIO_9P_PCI, | |
928 | .parent = TYPE_VIRTIO_PCI, | |
929 | .instance_size = sizeof(V9fsPCIState), | |
930 | .instance_init = virtio_9p_pci_instance_init, | |
931 | .class_init = virtio_9p_pci_class_init, | |
60653b28 | 932 | }; |
234a336f | 933 | #endif /* CONFIG_VIRTFS */ |
60653b28 | 934 | |
085bccb7 FK |
935 | /* |
936 | * virtio-pci: This is the PCIDevice which has a virtio-pci-bus. | |
937 | */ | |
938 | ||
939 | /* This is called by virtio-bus just after the device is plugged. */ | |
940 | static void virtio_pci_device_plugged(DeviceState *d) | |
941 | { | |
942 | VirtIOPCIProxy *proxy = VIRTIO_PCI(d); | |
943 | VirtioBusState *bus = &proxy->bus; | |
944 | uint8_t *config; | |
945 | uint32_t size; | |
946 | ||
947 | proxy->vdev = bus->vdev; | |
948 | ||
949 | config = proxy->pci_dev.config; | |
950 | if (proxy->class_code) { | |
951 | pci_config_set_class(config, proxy->class_code); | |
952 | } | |
953 | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, | |
954 | pci_get_word(config + PCI_VENDOR_ID)); | |
955 | pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus)); | |
956 | config[PCI_INTERRUPT_PIN] = 1; | |
957 | ||
958 | if (proxy->nvectors && | |
959 | msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors, 1)) { | |
960 | proxy->nvectors = 0; | |
961 | } | |
962 | ||
963 | proxy->pci_dev.config_write = virtio_write_config; | |
964 | ||
965 | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) | |
966 | + virtio_bus_get_vdev_config_len(bus); | |
967 | if (size & (size - 1)) { | |
968 | size = 1 << qemu_fls(size); | |
969 | } | |
970 | ||
22fc860b PB |
971 | memory_region_init_io(&proxy->bar, OBJECT(proxy), &virtio_pci_config_ops, |
972 | proxy, "virtio-pci", size); | |
085bccb7 FK |
973 | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, |
974 | &proxy->bar); | |
975 | ||
976 | if (!kvm_has_many_ioeventfds()) { | |
977 | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; | |
978 | } | |
979 | ||
980 | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; | |
981 | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; | |
982 | proxy->host_features = virtio_bus_get_vdev_features(bus, | |
983 | proxy->host_features); | |
984 | } | |
985 | ||
085bccb7 FK |
986 | static int virtio_pci_init(PCIDevice *pci_dev) |
987 | { | |
988 | VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); | |
989 | VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev); | |
ac7af112 | 990 | virtio_pci_bus_new(&dev->bus, sizeof(dev->bus), dev); |
085bccb7 FK |
991 | if (k->init != NULL) { |
992 | return k->init(dev); | |
993 | } | |
994 | return 0; | |
995 | } | |
996 | ||
997 | static void virtio_pci_exit(PCIDevice *pci_dev) | |
998 | { | |
999 | VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); | |
10479a80 | 1000 | virtio_pci_stop_ioeventfd(proxy); |
a2f1078b FK |
1001 | memory_region_destroy(&proxy->bar); |
1002 | msix_uninit_exclusive_bar(pci_dev); | |
085bccb7 FK |
1003 | } |
1004 | ||
59ccd20a | 1005 | static void virtio_pci_reset(DeviceState *qdev) |
085bccb7 FK |
1006 | { |
1007 | VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev); | |
1008 | VirtioBusState *bus = VIRTIO_BUS(&proxy->bus); | |
1009 | virtio_pci_stop_ioeventfd(proxy); | |
1010 | virtio_bus_reset(bus); | |
1011 | msix_unuse_all_vectors(&proxy->pci_dev); | |
1012 | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
1013 | } | |
1014 | ||
1015 | static void virtio_pci_class_init(ObjectClass *klass, void *data) | |
1016 | { | |
1017 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1018 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1019 | ||
1020 | k->init = virtio_pci_init; | |
1021 | k->exit = virtio_pci_exit; | |
1022 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1023 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
1024 | k->class_id = PCI_CLASS_OTHERS; | |
59ccd20a | 1025 | dc->reset = virtio_pci_reset; |
085bccb7 FK |
1026 | } |
1027 | ||
1028 | static const TypeInfo virtio_pci_info = { | |
1029 | .name = TYPE_VIRTIO_PCI, | |
1030 | .parent = TYPE_PCI_DEVICE, | |
1031 | .instance_size = sizeof(VirtIOPCIProxy), | |
1032 | .class_init = virtio_pci_class_init, | |
1033 | .class_size = sizeof(VirtioPCIClass), | |
1034 | .abstract = true, | |
1035 | }; | |
1036 | ||
653ced07 FK |
1037 | /* virtio-blk-pci */ |
1038 | ||
1039 | static Property virtio_blk_pci_properties[] = { | |
1040 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
1041 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, | |
1042 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
1043 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
1044 | #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE | |
1045 | DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false), | |
1046 | #endif | |
1047 | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), | |
1048 | DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk), | |
1049 | DEFINE_PROP_END_OF_LIST(), | |
1050 | }; | |
1051 | ||
1052 | static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev) | |
1053 | { | |
1054 | VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); | |
1055 | DeviceState *vdev = DEVICE(&dev->vdev); | |
1056 | virtio_blk_set_conf(vdev, &(dev->blk)); | |
1057 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); | |
1058 | if (qdev_init(vdev) < 0) { | |
1059 | return -1; | |
1060 | } | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) | |
1065 | { | |
1066 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1067 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
1068 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
1069 | ||
125ee0ed | 1070 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
653ced07 FK |
1071 | dc->props = virtio_blk_pci_properties; |
1072 | k->init = virtio_blk_pci_init; | |
1073 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1074 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; | |
1075 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; | |
1076 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
1077 | } | |
1078 | ||
1079 | static void virtio_blk_pci_instance_init(Object *obj) | |
1080 | { | |
1081 | VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); | |
e65177a8 | 1082 | object_initialize(&dev->vdev, TYPE_VIRTIO_BLK); |
653ced07 FK |
1083 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1084 | } | |
1085 | ||
1086 | static const TypeInfo virtio_blk_pci_info = { | |
1087 | .name = TYPE_VIRTIO_BLK_PCI, | |
1088 | .parent = TYPE_VIRTIO_PCI, | |
1089 | .instance_size = sizeof(VirtIOBlkPCI), | |
1090 | .instance_init = virtio_blk_pci_instance_init, | |
1091 | .class_init = virtio_blk_pci_class_init, | |
1092 | }; | |
1093 | ||
bc7b90a0 FK |
1094 | /* virtio-scsi-pci */ |
1095 | ||
1096 | static Property virtio_scsi_pci_properties[] = { | |
1097 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, | |
1098 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
1099 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, | |
1100 | DEV_NVECTORS_UNSPECIFIED), | |
1101 | DEFINE_VIRTIO_SCSI_FEATURES(VirtIOPCIProxy, host_features), | |
292c8e50 | 1102 | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIPCI, vdev.parent_obj.conf), |
bc7b90a0 FK |
1103 | DEFINE_PROP_END_OF_LIST(), |
1104 | }; | |
1105 | ||
1106 | static int virtio_scsi_pci_init_pci(VirtIOPCIProxy *vpci_dev) | |
1107 | { | |
1108 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); | |
1109 | DeviceState *vdev = DEVICE(&dev->vdev); | |
292c8e50 | 1110 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); |
6f32a6b4 FK |
1111 | DeviceState *proxy = DEVICE(vpci_dev); |
1112 | char *bus_name; | |
bc7b90a0 FK |
1113 | |
1114 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { | |
292c8e50 | 1115 | vpci_dev->nvectors = vs->conf.num_queues + 3; |
bc7b90a0 FK |
1116 | } |
1117 | ||
6f32a6b4 FK |
1118 | /* |
1119 | * For command line compatibility, this sets the virtio-scsi-device bus | |
1120 | * name as before. | |
1121 | */ | |
1122 | if (proxy->id) { | |
1123 | bus_name = g_strdup_printf("%s.0", proxy->id); | |
1124 | virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); | |
1125 | g_free(bus_name); | |
1126 | } | |
1127 | ||
bc7b90a0 FK |
1128 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1129 | if (qdev_init(vdev) < 0) { | |
1130 | return -1; | |
1131 | } | |
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) | |
1136 | { | |
1137 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1138 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
1139 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
1140 | k->init = virtio_scsi_pci_init_pci; | |
125ee0ed | 1141 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
bc7b90a0 FK |
1142 | dc->props = virtio_scsi_pci_properties; |
1143 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1144 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
1145 | pcidev_k->revision = 0x00; | |
1146 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
1147 | } | |
1148 | ||
1149 | static void virtio_scsi_pci_instance_init(Object *obj) | |
1150 | { | |
1151 | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); | |
e65177a8 | 1152 | object_initialize(&dev->vdev, TYPE_VIRTIO_SCSI); |
bc7b90a0 FK |
1153 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1154 | } | |
1155 | ||
1156 | static const TypeInfo virtio_scsi_pci_info = { | |
1157 | .name = TYPE_VIRTIO_SCSI_PCI, | |
1158 | .parent = TYPE_VIRTIO_PCI, | |
1159 | .instance_size = sizeof(VirtIOSCSIPCI), | |
1160 | .instance_init = virtio_scsi_pci_instance_init, | |
1161 | .class_init = virtio_scsi_pci_class_init, | |
1162 | }; | |
1163 | ||
50787628 NB |
1164 | /* vhost-scsi-pci */ |
1165 | ||
1166 | #ifdef CONFIG_VHOST_SCSI | |
1167 | static Property vhost_scsi_pci_properties[] = { | |
1168 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, | |
1169 | DEV_NVECTORS_UNSPECIFIED), | |
1170 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
1171 | DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIPCI, vdev.parent_obj.conf), | |
1172 | DEFINE_PROP_END_OF_LIST(), | |
1173 | }; | |
1174 | ||
1175 | static int vhost_scsi_pci_init_pci(VirtIOPCIProxy *vpci_dev) | |
1176 | { | |
1177 | VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev); | |
1178 | DeviceState *vdev = DEVICE(&dev->vdev); | |
1179 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); | |
1180 | ||
1181 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { | |
1182 | vpci_dev->nvectors = vs->conf.num_queues + 3; | |
1183 | } | |
1184 | ||
1185 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); | |
1186 | if (qdev_init(vdev) < 0) { | |
1187 | return -1; | |
1188 | } | |
1189 | return 0; | |
1190 | } | |
1191 | ||
1192 | static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data) | |
1193 | { | |
1194 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1195 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
1196 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
1197 | k->init = vhost_scsi_pci_init_pci; | |
125ee0ed | 1198 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
50787628 NB |
1199 | dc->props = vhost_scsi_pci_properties; |
1200 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1201 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
1202 | pcidev_k->revision = 0x00; | |
1203 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
1204 | } | |
1205 | ||
1206 | static void vhost_scsi_pci_instance_init(Object *obj) | |
1207 | { | |
1208 | VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj); | |
e65177a8 | 1209 | object_initialize(&dev->vdev, TYPE_VHOST_SCSI); |
50787628 NB |
1210 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1211 | } | |
1212 | ||
1213 | static const TypeInfo vhost_scsi_pci_info = { | |
1214 | .name = TYPE_VHOST_SCSI_PCI, | |
1215 | .parent = TYPE_VIRTIO_PCI, | |
1216 | .instance_size = sizeof(VHostSCSIPCI), | |
1217 | .instance_init = vhost_scsi_pci_instance_init, | |
1218 | .class_init = vhost_scsi_pci_class_init, | |
1219 | }; | |
1220 | #endif | |
1221 | ||
e378e88d FK |
1222 | /* virtio-balloon-pci */ |
1223 | ||
24a6e7f4 FK |
1224 | static void balloon_pci_stats_get_all(Object *obj, struct Visitor *v, |
1225 | void *opaque, const char *name, | |
1226 | Error **errp) | |
1227 | { | |
1228 | VirtIOBalloonPCI *dev = opaque; | |
1229 | object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp); | |
1230 | } | |
1231 | ||
1232 | static void balloon_pci_stats_get_poll_interval(Object *obj, struct Visitor *v, | |
1233 | void *opaque, const char *name, | |
1234 | Error **errp) | |
1235 | { | |
1236 | VirtIOBalloonPCI *dev = opaque; | |
1237 | object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval", | |
1238 | errp); | |
1239 | } | |
1240 | ||
1241 | static void balloon_pci_stats_set_poll_interval(Object *obj, struct Visitor *v, | |
1242 | void *opaque, const char *name, | |
1243 | Error **errp) | |
1244 | { | |
1245 | VirtIOBalloonPCI *dev = opaque; | |
1246 | object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval", | |
1247 | errp); | |
1248 | } | |
1249 | ||
e378e88d FK |
1250 | static Property virtio_balloon_pci_properties[] = { |
1251 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
1252 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
1253 | DEFINE_PROP_END_OF_LIST(), | |
1254 | }; | |
1255 | ||
1256 | static int virtio_balloon_pci_init(VirtIOPCIProxy *vpci_dev) | |
1257 | { | |
1258 | VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev); | |
1259 | DeviceState *vdev = DEVICE(&dev->vdev); | |
1260 | ||
1261 | if (vpci_dev->class_code != PCI_CLASS_OTHERS && | |
1262 | vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */ | |
1263 | vpci_dev->class_code = PCI_CLASS_OTHERS; | |
1264 | } | |
1265 | ||
1266 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); | |
1267 | if (qdev_init(vdev) < 0) { | |
1268 | return -1; | |
1269 | } | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data) | |
1274 | { | |
1275 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1276 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
1277 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
1278 | k->init = virtio_balloon_pci_init; | |
125ee0ed | 1279 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
e378e88d FK |
1280 | dc->props = virtio_balloon_pci_properties; |
1281 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1282 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; | |
1283 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; | |
1284 | pcidev_k->class_id = PCI_CLASS_OTHERS; | |
1285 | } | |
1286 | ||
1287 | static void virtio_balloon_pci_instance_init(Object *obj) | |
1288 | { | |
1289 | VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj); | |
e65177a8 | 1290 | object_initialize(&dev->vdev, TYPE_VIRTIO_BALLOON); |
e378e88d | 1291 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
24a6e7f4 FK |
1292 | |
1293 | object_property_add(obj, "guest-stats", "guest statistics", | |
1294 | balloon_pci_stats_get_all, NULL, NULL, dev, | |
1295 | NULL); | |
1296 | ||
1297 | object_property_add(obj, "guest-stats-polling-interval", "int", | |
1298 | balloon_pci_stats_get_poll_interval, | |
1299 | balloon_pci_stats_set_poll_interval, | |
1300 | NULL, dev, NULL); | |
e378e88d FK |
1301 | } |
1302 | ||
1303 | static const TypeInfo virtio_balloon_pci_info = { | |
1304 | .name = TYPE_VIRTIO_BALLOON_PCI, | |
1305 | .parent = TYPE_VIRTIO_PCI, | |
1306 | .instance_size = sizeof(VirtIOBalloonPCI), | |
1307 | .instance_init = virtio_balloon_pci_instance_init, | |
1308 | .class_init = virtio_balloon_pci_class_init, | |
1309 | }; | |
1310 | ||
f7f7464a FK |
1311 | /* virtio-serial-pci */ |
1312 | ||
1313 | static int virtio_serial_pci_init(VirtIOPCIProxy *vpci_dev) | |
1314 | { | |
1315 | VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev); | |
1316 | DeviceState *vdev = DEVICE(&dev->vdev); | |
80270a19 FK |
1317 | DeviceState *proxy = DEVICE(vpci_dev); |
1318 | char *bus_name; | |
f7f7464a FK |
1319 | |
1320 | if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER && | |
1321 | vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ | |
1322 | vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */ | |
1323 | vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER; | |
1324 | } | |
1325 | ||
1326 | /* backwards-compatibility with machines that were created with | |
1327 | DEV_NVECTORS_UNSPECIFIED */ | |
1328 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { | |
1329 | vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1; | |
1330 | } | |
1331 | ||
80270a19 FK |
1332 | /* |
1333 | * For command line compatibility, this sets the virtio-serial-device bus | |
1334 | * name as before. | |
1335 | */ | |
1336 | if (proxy->id) { | |
1337 | bus_name = g_strdup_printf("%s.0", proxy->id); | |
1338 | virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); | |
1339 | g_free(bus_name); | |
1340 | } | |
1341 | ||
f7f7464a FK |
1342 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1343 | if (qdev_init(vdev) < 0) { | |
1344 | return -1; | |
1345 | } | |
1346 | return 0; | |
1347 | } | |
1348 | ||
1349 | static Property virtio_serial_pci_properties[] = { | |
1350 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, | |
1351 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
1352 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
1353 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
1354 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
1355 | DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialPCI, vdev.serial), | |
1356 | DEFINE_PROP_END_OF_LIST(), | |
1357 | }; | |
1358 | ||
1359 | static void virtio_serial_pci_class_init(ObjectClass *klass, void *data) | |
1360 | { | |
1361 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1362 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
1363 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
1364 | k->init = virtio_serial_pci_init; | |
125ee0ed | 1365 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
f7f7464a FK |
1366 | dc->props = virtio_serial_pci_properties; |
1367 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1368 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; | |
1369 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; | |
1370 | pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER; | |
1371 | } | |
1372 | ||
1373 | static void virtio_serial_pci_instance_init(Object *obj) | |
1374 | { | |
1375 | VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj); | |
e65177a8 | 1376 | object_initialize(&dev->vdev, TYPE_VIRTIO_SERIAL); |
f7f7464a FK |
1377 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1378 | } | |
1379 | ||
1380 | static const TypeInfo virtio_serial_pci_info = { | |
1381 | .name = TYPE_VIRTIO_SERIAL_PCI, | |
1382 | .parent = TYPE_VIRTIO_PCI, | |
1383 | .instance_size = sizeof(VirtIOSerialPCI), | |
1384 | .instance_init = virtio_serial_pci_instance_init, | |
1385 | .class_init = virtio_serial_pci_class_init, | |
1386 | }; | |
1387 | ||
e37da394 FK |
1388 | /* virtio-net-pci */ |
1389 | ||
1390 | static Property virtio_net_properties[] = { | |
1391 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, | |
1392 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), | |
1393 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), | |
1394 | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), | |
1395 | DEFINE_NIC_PROPERTIES(VirtIONetPCI, vdev.nic_conf), | |
1396 | DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetPCI, vdev.net_conf), | |
1397 | DEFINE_PROP_END_OF_LIST(), | |
1398 | }; | |
1399 | ||
1400 | static int virtio_net_pci_init(VirtIOPCIProxy *vpci_dev) | |
1401 | { | |
800ced8c | 1402 | DeviceState *qdev = DEVICE(vpci_dev); |
e37da394 FK |
1403 | VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev); |
1404 | DeviceState *vdev = DEVICE(&dev->vdev); | |
1405 | ||
1406 | virtio_net_set_config_size(&dev->vdev, vpci_dev->host_features); | |
800ced8c FK |
1407 | virtio_net_set_netclient_name(&dev->vdev, qdev->id, |
1408 | object_get_typename(OBJECT(qdev))); | |
e37da394 FK |
1409 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1410 | if (qdev_init(vdev) < 0) { | |
1411 | return -1; | |
1412 | } | |
1413 | return 0; | |
1414 | } | |
1415 | ||
1416 | static void virtio_net_pci_class_init(ObjectClass *klass, void *data) | |
1417 | { | |
1418 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1419 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1420 | VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass); | |
1421 | ||
1422 | k->romfile = "efi-virtio.rom"; | |
1423 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1424 | k->device_id = PCI_DEVICE_ID_VIRTIO_NET; | |
1425 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
1426 | k->class_id = PCI_CLASS_NETWORK_ETHERNET; | |
125ee0ed | 1427 | set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); |
e37da394 FK |
1428 | dc->props = virtio_net_properties; |
1429 | vpciklass->init = virtio_net_pci_init; | |
1430 | } | |
1431 | ||
1432 | static void virtio_net_pci_instance_init(Object *obj) | |
1433 | { | |
1434 | VirtIONetPCI *dev = VIRTIO_NET_PCI(obj); | |
e65177a8 | 1435 | object_initialize(&dev->vdev, TYPE_VIRTIO_NET); |
e37da394 FK |
1436 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1437 | } | |
1438 | ||
1439 | static const TypeInfo virtio_net_pci_info = { | |
1440 | .name = TYPE_VIRTIO_NET_PCI, | |
1441 | .parent = TYPE_VIRTIO_PCI, | |
1442 | .instance_size = sizeof(VirtIONetPCI), | |
1443 | .instance_init = virtio_net_pci_instance_init, | |
1444 | .class_init = virtio_net_pci_class_init, | |
1445 | }; | |
1446 | ||
59ccd20a FK |
1447 | /* virtio-rng-pci */ |
1448 | ||
1449 | static Property virtio_rng_pci_properties[] = { | |
1450 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
1451 | DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORngPCI, vdev.conf), | |
1452 | DEFINE_PROP_END_OF_LIST(), | |
1453 | }; | |
1454 | ||
1455 | static int virtio_rng_pci_init(VirtIOPCIProxy *vpci_dev) | |
1456 | { | |
1457 | VirtIORngPCI *vrng = VIRTIO_RNG_PCI(vpci_dev); | |
1458 | DeviceState *vdev = DEVICE(&vrng->vdev); | |
1459 | ||
1460 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); | |
1461 | if (qdev_init(vdev) < 0) { | |
1462 | return -1; | |
1463 | } | |
1464 | ||
1465 | object_property_set_link(OBJECT(vrng), | |
5b456438 | 1466 | OBJECT(vrng->vdev.conf.rng), "rng", |
59ccd20a FK |
1467 | NULL); |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | static void virtio_rng_pci_class_init(ObjectClass *klass, void *data) | |
1473 | { | |
1474 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1475 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
1476 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
1477 | ||
1478 | k->init = virtio_rng_pci_init; | |
125ee0ed | 1479 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
59ccd20a FK |
1480 | dc->props = virtio_rng_pci_properties; |
1481 | ||
1482 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1483 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_RNG; | |
1484 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; | |
1485 | pcidev_k->class_id = PCI_CLASS_OTHERS; | |
1486 | } | |
1487 | ||
1488 | static void virtio_rng_initfn(Object *obj) | |
1489 | { | |
1490 | VirtIORngPCI *dev = VIRTIO_RNG_PCI(obj); | |
e65177a8 | 1491 | object_initialize(&dev->vdev, TYPE_VIRTIO_RNG); |
59ccd20a FK |
1492 | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1493 | object_property_add_link(obj, "rng", TYPE_RNG_BACKEND, | |
1494 | (Object **)&dev->vdev.conf.rng, NULL); | |
1495 | ||
1496 | } | |
1497 | ||
1498 | static const TypeInfo virtio_rng_pci_info = { | |
1499 | .name = TYPE_VIRTIO_RNG_PCI, | |
1500 | .parent = TYPE_VIRTIO_PCI, | |
1501 | .instance_size = sizeof(VirtIORngPCI), | |
1502 | .instance_init = virtio_rng_initfn, | |
1503 | .class_init = virtio_rng_pci_class_init, | |
1504 | }; | |
1505 | ||
0a2acf5e FK |
1506 | /* virtio-pci-bus */ |
1507 | ||
ac7af112 AF |
1508 | static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size, |
1509 | VirtIOPCIProxy *dev) | |
0a2acf5e FK |
1510 | { |
1511 | DeviceState *qdev = DEVICE(dev); | |
1512 | BusState *qbus; | |
f4dd69aa FK |
1513 | char virtio_bus_name[] = "virtio-bus"; |
1514 | ||
1515 | qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, | |
1516 | virtio_bus_name); | |
0a2acf5e | 1517 | qbus = BUS(bus); |
cbd19063 | 1518 | qbus->allow_hotplug = 1; |
0a2acf5e FK |
1519 | } |
1520 | ||
1521 | static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) | |
1522 | { | |
1523 | BusClass *bus_class = BUS_CLASS(klass); | |
1524 | VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); | |
1525 | bus_class->max_dev = 1; | |
1526 | k->notify = virtio_pci_notify; | |
1527 | k->save_config = virtio_pci_save_config; | |
1528 | k->load_config = virtio_pci_load_config; | |
1529 | k->save_queue = virtio_pci_save_queue; | |
1530 | k->load_queue = virtio_pci_load_queue; | |
1531 | k->get_features = virtio_pci_get_features; | |
1532 | k->query_guest_notifiers = virtio_pci_query_guest_notifiers; | |
1533 | k->set_host_notifier = virtio_pci_set_host_notifier; | |
1534 | k->set_guest_notifiers = virtio_pci_set_guest_notifiers; | |
1535 | k->vmstate_change = virtio_pci_vmstate_change; | |
085bccb7 | 1536 | k->device_plugged = virtio_pci_device_plugged; |
0a2acf5e FK |
1537 | } |
1538 | ||
1539 | static const TypeInfo virtio_pci_bus_info = { | |
1540 | .name = TYPE_VIRTIO_PCI_BUS, | |
1541 | .parent = TYPE_VIRTIO_BUS, | |
1542 | .instance_size = sizeof(VirtioPCIBusState), | |
1543 | .class_init = virtio_pci_bus_class_init, | |
1544 | }; | |
1545 | ||
83f7d43a | 1546 | static void virtio_pci_register_types(void) |
53c25cea | 1547 | { |
59ccd20a | 1548 | type_register_static(&virtio_rng_pci_info); |
0a2acf5e | 1549 | type_register_static(&virtio_pci_bus_info); |
085bccb7 | 1550 | type_register_static(&virtio_pci_info); |
60653b28 | 1551 | #ifdef CONFIG_VIRTFS |
234a336f | 1552 | type_register_static(&virtio_9p_pci_info); |
60653b28 | 1553 | #endif |
653ced07 | 1554 | type_register_static(&virtio_blk_pci_info); |
bc7b90a0 | 1555 | type_register_static(&virtio_scsi_pci_info); |
e378e88d | 1556 | type_register_static(&virtio_balloon_pci_info); |
f7f7464a | 1557 | type_register_static(&virtio_serial_pci_info); |
e37da394 | 1558 | type_register_static(&virtio_net_pci_info); |
50787628 NB |
1559 | #ifdef CONFIG_VHOST_SCSI |
1560 | type_register_static(&vhost_scsi_pci_info); | |
1561 | #endif | |
53c25cea PB |
1562 | } |
1563 | ||
83f7d43a | 1564 | type_init(virtio_pci_register_types) |