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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 | ||
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 | } |
ff24bd58 | 134 | msix_load(&proxy->pci_dev, f); |
e6da7680 | 135 | if (msix_present(&proxy->pci_dev)) { |
ff24bd58 | 136 | qemu_get_be16s(f, &proxy->vdev->config_vector); |
e6da7680 MT |
137 | } else { |
138 | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; | |
139 | } | |
140 | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { | |
141 | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); | |
142 | } | |
ff24bd58 MT |
143 | return 0; |
144 | } | |
145 | ||
146 | static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) | |
147 | { | |
148 | VirtIOPCIProxy *proxy = opaque; | |
149 | uint16_t vector; | |
e6da7680 MT |
150 | if (msix_present(&proxy->pci_dev)) { |
151 | qemu_get_be16s(f, &vector); | |
152 | } else { | |
153 | vector = VIRTIO_NO_VECTOR; | |
154 | } | |
ff24bd58 | 155 | virtio_queue_set_vector(proxy->vdev, n, vector); |
e6da7680 MT |
156 | if (vector != VIRTIO_NO_VECTOR) { |
157 | return msix_vector_use(&proxy->pci_dev, vector); | |
158 | } | |
ff24bd58 MT |
159 | return 0; |
160 | } | |
161 | ||
25db9ebe SH |
162 | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
163 | int n, bool assign) | |
164 | { | |
165 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
166 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
da146d0a AK |
167 | int r = 0; |
168 | ||
25db9ebe SH |
169 | if (assign) { |
170 | r = event_notifier_init(notifier, 1); | |
171 | if (r < 0) { | |
b36e3914 MT |
172 | error_report("%s: unable to init event notifier: %d", |
173 | __func__, r); | |
25db9ebe SH |
174 | return r; |
175 | } | |
da146d0a AK |
176 | memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
177 | true, n, event_notifier_get_fd(notifier)); | |
25db9ebe | 178 | } else { |
da146d0a AK |
179 | memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, |
180 | true, n, event_notifier_get_fd(notifier)); | |
25db9ebe SH |
181 | /* Handle the race condition where the guest kicked and we deassigned |
182 | * before we got around to handling the kick. | |
183 | */ | |
184 | if (event_notifier_test_and_clear(notifier)) { | |
185 | virtio_queue_notify_vq(vq); | |
186 | } | |
187 | ||
188 | event_notifier_cleanup(notifier); | |
189 | } | |
190 | return r; | |
191 | } | |
192 | ||
193 | static void virtio_pci_host_notifier_read(void *opaque) | |
194 | { | |
195 | VirtQueue *vq = opaque; | |
196 | EventNotifier *n = virtio_queue_get_host_notifier(vq); | |
197 | if (event_notifier_test_and_clear(n)) { | |
198 | virtio_queue_notify_vq(vq); | |
199 | } | |
200 | } | |
201 | ||
202 | static void virtio_pci_set_host_notifier_fd_handler(VirtIOPCIProxy *proxy, | |
203 | int n, bool assign) | |
204 | { | |
205 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
206 | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); | |
207 | if (assign) { | |
208 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
209 | virtio_pci_host_notifier_read, NULL, vq); | |
210 | } else { | |
211 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
212 | NULL, NULL, NULL); | |
213 | } | |
214 | } | |
215 | ||
b36e3914 | 216 | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe SH |
217 | { |
218 | int n, r; | |
219 | ||
220 | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || | |
221 | proxy->ioeventfd_disabled || | |
222 | proxy->ioeventfd_started) { | |
b36e3914 | 223 | return; |
25db9ebe SH |
224 | } |
225 | ||
226 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
227 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
228 | continue; | |
229 | } | |
230 | ||
231 | r = virtio_pci_set_host_notifier_internal(proxy, n, true); | |
232 | if (r < 0) { | |
233 | goto assign_error; | |
234 | } | |
235 | ||
236 | virtio_pci_set_host_notifier_fd_handler(proxy, n, true); | |
237 | } | |
238 | proxy->ioeventfd_started = true; | |
b36e3914 | 239 | return; |
25db9ebe SH |
240 | |
241 | assign_error: | |
242 | while (--n >= 0) { | |
243 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
244 | continue; | |
245 | } | |
246 | ||
247 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
b36e3914 MT |
248 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); |
249 | assert(r >= 0); | |
25db9ebe SH |
250 | } |
251 | proxy->ioeventfd_started = false; | |
b36e3914 | 252 | error_report("%s: failed. Fallback to a userspace (slower).", __func__); |
25db9ebe SH |
253 | } |
254 | ||
b36e3914 | 255 | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
25db9ebe | 256 | { |
b36e3914 | 257 | int r; |
25db9ebe SH |
258 | int n; |
259 | ||
260 | if (!proxy->ioeventfd_started) { | |
b36e3914 | 261 | return; |
25db9ebe SH |
262 | } |
263 | ||
264 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { | |
265 | if (!virtio_queue_get_num(proxy->vdev, n)) { | |
266 | continue; | |
267 | } | |
268 | ||
269 | virtio_pci_set_host_notifier_fd_handler(proxy, n, false); | |
b36e3914 MT |
270 | r = virtio_pci_set_host_notifier_internal(proxy, n, false); |
271 | assert(r >= 0); | |
25db9ebe SH |
272 | } |
273 | proxy->ioeventfd_started = false; | |
25db9ebe SH |
274 | } |
275 | ||
8798d6c9 | 276 | void virtio_pci_reset(DeviceState *d) |
7055e687 | 277 | { |
e489030d | 278 | VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
25db9ebe | 279 | virtio_pci_stop_ioeventfd(proxy); |
7055e687 | 280 | virtio_reset(proxy->vdev); |
25db9ebe | 281 | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
7055e687 MT |
282 | } |
283 | ||
53c25cea PB |
284 | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
285 | { | |
286 | VirtIOPCIProxy *proxy = opaque; | |
287 | VirtIODevice *vdev = proxy->vdev; | |
c227f099 | 288 | target_phys_addr_t pa; |
53c25cea | 289 | |
53c25cea PB |
290 | switch (addr) { |
291 | case VIRTIO_PCI_GUEST_FEATURES: | |
292 | /* Guest does not negotiate properly? We have to assume nothing. */ | |
293 | if (val & (1 << VIRTIO_F_BAD_FEATURE)) { | |
ad0c9332 | 294 | val = vdev->bad_features ? vdev->bad_features(vdev) : 0; |
53c25cea | 295 | } |
ad0c9332 | 296 | virtio_set_features(vdev, val); |
53c25cea PB |
297 | break; |
298 | case VIRTIO_PCI_QUEUE_PFN: | |
c227f099 | 299 | pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
1b8e9b27 | 300 | if (pa == 0) { |
25db9ebe | 301 | virtio_pci_stop_ioeventfd(proxy); |
1b8e9b27 MT |
302 | virtio_reset(proxy->vdev); |
303 | msix_unuse_all_vectors(&proxy->pci_dev); | |
304 | } | |
7055e687 MT |
305 | else |
306 | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); | |
53c25cea PB |
307 | break; |
308 | case VIRTIO_PCI_QUEUE_SEL: | |
309 | if (val < VIRTIO_PCI_QUEUE_MAX) | |
310 | vdev->queue_sel = val; | |
311 | break; | |
312 | case VIRTIO_PCI_QUEUE_NOTIFY: | |
7157e2e2 SH |
313 | if (val < VIRTIO_PCI_QUEUE_MAX) { |
314 | virtio_queue_notify(vdev, val); | |
315 | } | |
53c25cea PB |
316 | break; |
317 | case VIRTIO_PCI_STATUS: | |
25db9ebe SH |
318 | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) { |
319 | virtio_pci_stop_ioeventfd(proxy); | |
320 | } | |
321 | ||
3e607cb5 | 322 | virtio_set_status(vdev, val & 0xFF); |
25db9ebe SH |
323 | |
324 | if (val & VIRTIO_CONFIG_S_DRIVER_OK) { | |
325 | virtio_pci_start_ioeventfd(proxy); | |
326 | } | |
327 | ||
1b8e9b27 MT |
328 | if (vdev->status == 0) { |
329 | virtio_reset(proxy->vdev); | |
330 | msix_unuse_all_vectors(&proxy->pci_dev); | |
331 | } | |
c81131db AG |
332 | |
333 | /* Linux before 2.6.34 sets the device as OK without enabling | |
334 | the PCI device bus master bit. In this case we need to disable | |
335 | some safety checks. */ | |
336 | if ((val & VIRTIO_CONFIG_S_DRIVER_OK) && | |
337 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
3dbca8e6 | 338 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
c81131db | 339 | } |
53c25cea | 340 | break; |
aba800a3 MT |
341 | case VIRTIO_MSI_CONFIG_VECTOR: |
342 | msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); | |
343 | /* Make it possible for guest to discover an error took place. */ | |
344 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
345 | val = VIRTIO_NO_VECTOR; | |
346 | vdev->config_vector = val; | |
347 | break; | |
348 | case VIRTIO_MSI_QUEUE_VECTOR: | |
349 | msix_vector_unuse(&proxy->pci_dev, | |
350 | virtio_queue_vector(vdev, vdev->queue_sel)); | |
351 | /* Make it possible for guest to discover an error took place. */ | |
352 | if (msix_vector_use(&proxy->pci_dev, val) < 0) | |
353 | val = VIRTIO_NO_VECTOR; | |
354 | virtio_queue_set_vector(vdev, vdev->queue_sel, val); | |
355 | break; | |
356 | default: | |
4e02d460 SH |
357 | error_report("%s: unexpected address 0x%x value 0x%x", |
358 | __func__, addr, val); | |
aba800a3 | 359 | break; |
53c25cea PB |
360 | } |
361 | } | |
362 | ||
aba800a3 | 363 | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) |
53c25cea | 364 | { |
53c25cea PB |
365 | VirtIODevice *vdev = proxy->vdev; |
366 | uint32_t ret = 0xFFFFFFFF; | |
367 | ||
53c25cea PB |
368 | switch (addr) { |
369 | case VIRTIO_PCI_HOST_FEATURES: | |
8172539d | 370 | ret = proxy->host_features; |
53c25cea PB |
371 | break; |
372 | case VIRTIO_PCI_GUEST_FEATURES: | |
704a76fc | 373 | ret = vdev->guest_features; |
53c25cea PB |
374 | break; |
375 | case VIRTIO_PCI_QUEUE_PFN: | |
376 | ret = virtio_queue_get_addr(vdev, vdev->queue_sel) | |
377 | >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; | |
378 | break; | |
379 | case VIRTIO_PCI_QUEUE_NUM: | |
380 | ret = virtio_queue_get_num(vdev, vdev->queue_sel); | |
381 | break; | |
382 | case VIRTIO_PCI_QUEUE_SEL: | |
383 | ret = vdev->queue_sel; | |
384 | break; | |
385 | case VIRTIO_PCI_STATUS: | |
386 | ret = vdev->status; | |
387 | break; | |
388 | case VIRTIO_PCI_ISR: | |
389 | /* reading from the ISR also clears it. */ | |
390 | ret = vdev->isr; | |
391 | vdev->isr = 0; | |
7055e687 | 392 | qemu_set_irq(proxy->pci_dev.irq[0], 0); |
53c25cea | 393 | break; |
aba800a3 MT |
394 | case VIRTIO_MSI_CONFIG_VECTOR: |
395 | ret = vdev->config_vector; | |
396 | break; | |
397 | case VIRTIO_MSI_QUEUE_VECTOR: | |
398 | ret = virtio_queue_vector(vdev, vdev->queue_sel); | |
399 | break; | |
53c25cea PB |
400 | default: |
401 | break; | |
402 | } | |
403 | ||
404 | return ret; | |
405 | } | |
406 | ||
407 | static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr) | |
408 | { | |
409 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 410 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
411 | if (addr < config) |
412 | return virtio_ioport_read(proxy, addr); | |
413 | addr -= config; | |
53c25cea PB |
414 | return virtio_config_readb(proxy->vdev, addr); |
415 | } | |
416 | ||
417 | static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr) | |
418 | { | |
419 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 420 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
82afa586 | 421 | uint16_t val; |
aba800a3 MT |
422 | if (addr < config) |
423 | return virtio_ioport_read(proxy, addr); | |
424 | addr -= config; | |
82afa586 BH |
425 | val = virtio_config_readw(proxy->vdev, addr); |
426 | if (virtio_is_big_endian()) { | |
427 | /* | |
428 | * virtio is odd, ioports are LE but config space is target native | |
429 | * endian. However, in qemu, all PIO is LE, so we need to re-swap | |
430 | * on BE targets | |
431 | */ | |
432 | val = bswap16(val); | |
433 | } | |
434 | return val; | |
53c25cea PB |
435 | } |
436 | ||
437 | static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) | |
438 | { | |
439 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 440 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
82afa586 | 441 | uint32_t val; |
aba800a3 MT |
442 | if (addr < config) |
443 | return virtio_ioport_read(proxy, addr); | |
444 | addr -= config; | |
82afa586 BH |
445 | val = virtio_config_readl(proxy->vdev, addr); |
446 | if (virtio_is_big_endian()) { | |
447 | val = bswap32(val); | |
448 | } | |
449 | return val; | |
53c25cea PB |
450 | } |
451 | ||
452 | static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) | |
453 | { | |
454 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 455 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
456 | if (addr < config) { |
457 | virtio_ioport_write(proxy, addr, val); | |
458 | return; | |
459 | } | |
460 | addr -= config; | |
53c25cea PB |
461 | virtio_config_writeb(proxy->vdev, addr, val); |
462 | } | |
463 | ||
464 | static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val) | |
465 | { | |
466 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 467 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
468 | if (addr < config) { |
469 | virtio_ioport_write(proxy, addr, val); | |
470 | return; | |
471 | } | |
472 | addr -= config; | |
82afa586 BH |
473 | if (virtio_is_big_endian()) { |
474 | val = bswap16(val); | |
475 | } | |
53c25cea PB |
476 | virtio_config_writew(proxy->vdev, addr, val); |
477 | } | |
478 | ||
479 | static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val) | |
480 | { | |
481 | VirtIOPCIProxy *proxy = opaque; | |
aba800a3 | 482 | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
aba800a3 MT |
483 | if (addr < config) { |
484 | virtio_ioport_write(proxy, addr, val); | |
485 | return; | |
486 | } | |
487 | addr -= config; | |
82afa586 BH |
488 | if (virtio_is_big_endian()) { |
489 | val = bswap32(val); | |
490 | } | |
53c25cea PB |
491 | virtio_config_writel(proxy->vdev, addr, val); |
492 | } | |
493 | ||
4636b9d1 | 494 | static const MemoryRegionPortio virtio_portio[] = { |
da146d0a AK |
495 | { 0, 0x10000, 1, .write = virtio_pci_config_writeb, }, |
496 | { 0, 0x10000, 2, .write = virtio_pci_config_writew, }, | |
497 | { 0, 0x10000, 4, .write = virtio_pci_config_writel, }, | |
498 | { 0, 0x10000, 1, .read = virtio_pci_config_readb, }, | |
499 | { 0, 0x10000, 2, .read = virtio_pci_config_readw, }, | |
500 | { 0, 0x10000, 4, .read = virtio_pci_config_readl, }, | |
501 | PORTIO_END_OF_LIST() | |
502 | }; | |
53c25cea | 503 | |
da146d0a AK |
504 | static const MemoryRegionOps virtio_pci_config_ops = { |
505 | .old_portio = virtio_portio, | |
506 | .endianness = DEVICE_LITTLE_ENDIAN, | |
507 | }; | |
aba800a3 MT |
508 | |
509 | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, | |
510 | uint32_t val, int len) | |
511 | { | |
ed757e14 YV |
512 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
513 | ||
1129714f MT |
514 | pci_default_write_config(pci_dev, address, val, len); |
515 | ||
516 | if (range_covers_byte(address, len, PCI_COMMAND) && | |
517 | !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && | |
518 | !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { | |
519 | virtio_pci_stop_ioeventfd(proxy); | |
520 | virtio_set_status(proxy->vdev, | |
521 | proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); | |
ed757e14 | 522 | } |
53c25cea PB |
523 | } |
524 | ||
6d74ca5a MT |
525 | static unsigned virtio_pci_get_features(void *opaque) |
526 | { | |
8172539d MT |
527 | VirtIOPCIProxy *proxy = opaque; |
528 | return proxy->host_features; | |
6d74ca5a MT |
529 | } |
530 | ||
ade80dc8 MT |
531 | static void virtio_pci_guest_notifier_read(void *opaque) |
532 | { | |
533 | VirtQueue *vq = opaque; | |
534 | EventNotifier *n = virtio_queue_get_guest_notifier(vq); | |
535 | if (event_notifier_test_and_clear(n)) { | |
536 | virtio_irq(vq); | |
537 | } | |
538 | } | |
539 | ||
7d37d351 JK |
540 | static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, |
541 | unsigned int queue_no, | |
542 | unsigned int vector, | |
543 | MSIMessage msg) | |
544 | { | |
545 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
546 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; | |
547 | int fd, ret; | |
548 | ||
549 | fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vq)); | |
550 | ||
551 | if (irqfd->users == 0) { | |
552 | ret = kvm_irqchip_add_msi_route(kvm_state, msg); | |
553 | if (ret < 0) { | |
554 | return ret; | |
555 | } | |
556 | irqfd->virq = ret; | |
557 | } | |
558 | irqfd->users++; | |
559 | ||
560 | ret = kvm_irqchip_add_irqfd(kvm_state, fd, irqfd->virq); | |
561 | if (ret < 0) { | |
562 | if (--irqfd->users == 0) { | |
563 | kvm_irqchip_release_virq(kvm_state, irqfd->virq); | |
564 | } | |
565 | return ret; | |
566 | } | |
567 | ||
568 | qemu_set_fd_handler(fd, NULL, NULL, NULL); | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, | |
574 | unsigned int queue_no, | |
575 | unsigned int vector) | |
576 | { | |
577 | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); | |
578 | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; | |
579 | int fd, ret; | |
580 | ||
581 | fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vq)); | |
582 | ||
583 | ret = kvm_irqchip_remove_irqfd(kvm_state, fd, irqfd->virq); | |
584 | assert(ret == 0); | |
585 | ||
586 | if (--irqfd->users == 0) { | |
587 | kvm_irqchip_release_virq(kvm_state, irqfd->virq); | |
588 | } | |
589 | ||
590 | qemu_set_fd_handler(fd, virtio_pci_guest_notifier_read, NULL, vq); | |
591 | } | |
592 | ||
593 | static int kvm_virtio_pci_vector_use(PCIDevice *dev, unsigned vector, | |
594 | MSIMessage msg) | |
595 | { | |
596 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
597 | VirtIODevice *vdev = proxy->vdev; | |
598 | int ret, queue_no; | |
599 | ||
600 | for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { | |
601 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
602 | break; | |
603 | } | |
604 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
605 | continue; | |
606 | } | |
607 | ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); | |
608 | if (ret < 0) { | |
609 | goto undo; | |
610 | } | |
611 | } | |
612 | return 0; | |
613 | ||
614 | undo: | |
615 | while (--queue_no >= 0) { | |
616 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
617 | continue; | |
618 | } | |
619 | kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); | |
620 | } | |
621 | return ret; | |
622 | } | |
623 | ||
624 | static void kvm_virtio_pci_vector_release(PCIDevice *dev, unsigned vector) | |
625 | { | |
626 | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); | |
627 | VirtIODevice *vdev = proxy->vdev; | |
628 | int queue_no; | |
629 | ||
630 | for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { | |
631 | if (!virtio_queue_get_num(vdev, queue_no)) { | |
632 | break; | |
633 | } | |
634 | if (virtio_queue_vector(vdev, queue_no) != vector) { | |
635 | continue; | |
636 | } | |
637 | kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); | |
638 | } | |
639 | } | |
640 | ||
ade80dc8 MT |
641 | static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) |
642 | { | |
643 | VirtIOPCIProxy *proxy = opaque; | |
644 | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); | |
645 | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); | |
646 | ||
647 | if (assign) { | |
648 | int r = event_notifier_init(notifier, 0); | |
649 | if (r < 0) { | |
650 | return r; | |
651 | } | |
652 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
653 | virtio_pci_guest_notifier_read, NULL, vq); | |
654 | } else { | |
655 | qemu_set_fd_handler(event_notifier_get_fd(notifier), | |
656 | NULL, NULL, NULL); | |
7d37d351 JK |
657 | /* Test and clear notifier before closing it, |
658 | * in case poll callback didn't have time to run. */ | |
659 | virtio_pci_guest_notifier_read(vq); | |
ade80dc8 MT |
660 | event_notifier_cleanup(notifier); |
661 | } | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
5430a28f MT |
666 | static bool virtio_pci_query_guest_notifiers(void *opaque) |
667 | { | |
668 | VirtIOPCIProxy *proxy = opaque; | |
669 | return msix_enabled(&proxy->pci_dev); | |
670 | } | |
671 | ||
54dd9321 MT |
672 | static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
673 | { | |
674 | VirtIOPCIProxy *proxy = opaque; | |
675 | VirtIODevice *vdev = proxy->vdev; | |
676 | int r, n; | |
677 | ||
7d37d351 JK |
678 | /* Must unset vector notifier while guest notifier is still assigned */ |
679 | if (kvm_irqchip_in_kernel() && !assign) { | |
680 | msix_unset_vector_notifiers(&proxy->pci_dev); | |
681 | g_free(proxy->vector_irqfd); | |
682 | proxy->vector_irqfd = NULL; | |
683 | } | |
684 | ||
54dd9321 MT |
685 | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
686 | if (!virtio_queue_get_num(vdev, n)) { | |
687 | break; | |
688 | } | |
689 | ||
690 | r = virtio_pci_set_guest_notifier(opaque, n, assign); | |
691 | if (r < 0) { | |
692 | goto assign_error; | |
693 | } | |
694 | } | |
695 | ||
7d37d351 JK |
696 | /* Must set vector notifier after guest notifier has been assigned */ |
697 | if (kvm_irqchip_in_kernel() && assign) { | |
698 | proxy->vector_irqfd = | |
699 | g_malloc0(sizeof(*proxy->vector_irqfd) * | |
700 | msix_nr_vectors_allocated(&proxy->pci_dev)); | |
701 | r = msix_set_vector_notifiers(&proxy->pci_dev, | |
702 | kvm_virtio_pci_vector_use, | |
703 | kvm_virtio_pci_vector_release); | |
704 | if (r < 0) { | |
705 | goto assign_error; | |
706 | } | |
707 | } | |
708 | ||
54dd9321 MT |
709 | return 0; |
710 | ||
711 | assign_error: | |
712 | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ | |
7d37d351 | 713 | assert(assign); |
54dd9321 MT |
714 | while (--n >= 0) { |
715 | virtio_pci_set_guest_notifier(opaque, n, !assign); | |
716 | } | |
717 | return r; | |
718 | } | |
719 | ||
ade80dc8 MT |
720 | static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
721 | { | |
722 | VirtIOPCIProxy *proxy = opaque; | |
25db9ebe SH |
723 | |
724 | /* Stop using ioeventfd for virtqueue kick if the device starts using host | |
725 | * notifiers. This makes it easy to avoid stepping on each others' toes. | |
726 | */ | |
727 | proxy->ioeventfd_disabled = assign; | |
ade80dc8 | 728 | if (assign) { |
25db9ebe SH |
729 | virtio_pci_stop_ioeventfd(proxy); |
730 | } | |
731 | /* We don't need to start here: it's not needed because backend | |
732 | * currently only stops on status change away from ok, | |
733 | * reset, vmstop and such. If we do add code to start here, | |
734 | * need to check vmstate, device state etc. */ | |
735 | return virtio_pci_set_host_notifier_internal(proxy, n, assign); | |
736 | } | |
737 | ||
738 | static void virtio_pci_vmstate_change(void *opaque, bool running) | |
739 | { | |
740 | VirtIOPCIProxy *proxy = opaque; | |
741 | ||
742 | if (running) { | |
89c473fd MT |
743 | /* Try to find out if the guest has bus master disabled, but is |
744 | in ready state. Then we have a buggy guest OS. */ | |
745 | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && | |
746 | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { | |
747 | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; | |
748 | } | |
25db9ebe | 749 | virtio_pci_start_ioeventfd(proxy); |
ade80dc8 | 750 | } else { |
25db9ebe | 751 | virtio_pci_stop_ioeventfd(proxy); |
ade80dc8 | 752 | } |
ade80dc8 MT |
753 | } |
754 | ||
53c25cea | 755 | static const VirtIOBindings virtio_pci_bindings = { |
ff24bd58 MT |
756 | .notify = virtio_pci_notify, |
757 | .save_config = virtio_pci_save_config, | |
758 | .load_config = virtio_pci_load_config, | |
759 | .save_queue = virtio_pci_save_queue, | |
760 | .load_queue = virtio_pci_load_queue, | |
6d74ca5a | 761 | .get_features = virtio_pci_get_features, |
5430a28f | 762 | .query_guest_notifiers = virtio_pci_query_guest_notifiers, |
ade80dc8 | 763 | .set_host_notifier = virtio_pci_set_host_notifier, |
54dd9321 | 764 | .set_guest_notifiers = virtio_pci_set_guest_notifiers, |
25db9ebe | 765 | .vmstate_change = virtio_pci_vmstate_change, |
53c25cea PB |
766 | }; |
767 | ||
befeac45 | 768 | void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev) |
53c25cea PB |
769 | { |
770 | uint8_t *config; | |
771 | uint32_t size; | |
772 | ||
773 | proxy->vdev = vdev; | |
774 | ||
775 | config = proxy->pci_dev.config; | |
53c25cea | 776 | |
e75ccf2c IY |
777 | if (proxy->class_code) { |
778 | pci_config_set_class(config, proxy->class_code); | |
779 | } | |
ad3d11e6 HKR |
780 | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
781 | pci_get_word(config + PCI_VENDOR_ID)); | |
782 | pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); | |
783 | config[PCI_INTERRUPT_PIN] = 1; | |
53c25cea | 784 | |
95524ae8 AK |
785 | memory_region_init(&proxy->msix_bar, "virtio-msix", 4096); |
786 | if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, | |
787 | &proxy->msix_bar, 1, 0)) { | |
e824b2cc AK |
788 | pci_register_bar(&proxy->pci_dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, |
789 | &proxy->msix_bar); | |
aba800a3 MT |
790 | } else |
791 | vdev->nvectors = 0; | |
792 | ||
ed757e14 YV |
793 | proxy->pci_dev.config_write = virtio_write_config; |
794 | ||
aba800a3 | 795 | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
53c25cea PB |
796 | if (size & (size-1)) |
797 | size = 1 << qemu_fls(size); | |
798 | ||
da146d0a AK |
799 | memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
800 | "virtio-pci", size); | |
e824b2cc AK |
801 | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, |
802 | &proxy->bar); | |
53c25cea | 803 | |
25db9ebe SH |
804 | if (!kvm_has_many_ioeventfds()) { |
805 | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; | |
806 | } | |
807 | ||
53c25cea | 808 | virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
8172539d MT |
809 | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; |
810 | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; | |
811 | proxy->host_features = vdev->get_features(vdev, proxy->host_features); | |
53c25cea PB |
812 | } |
813 | ||
81a322d4 | 814 | static int virtio_blk_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
815 | { |
816 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
817 | VirtIODevice *vdev; | |
818 | ||
ab73ff29 GH |
819 | if (proxy->class_code != PCI_CLASS_STORAGE_SCSI && |
820 | proxy->class_code != PCI_CLASS_STORAGE_OTHER) | |
821 | proxy->class_code = PCI_CLASS_STORAGE_SCSI; | |
53c25cea | 822 | |
12c5674b | 823 | vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk); |
ac0c14d7 MA |
824 | if (!vdev) { |
825 | return -1; | |
826 | } | |
177539e0 | 827 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 828 | virtio_init_pci(proxy, vdev); |
177539e0 GH |
829 | /* make the actual value visible */ |
830 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 831 | return 0; |
21d58b57 MM |
832 | } |
833 | ||
0f457d91 MT |
834 | static int virtio_exit_pci(PCIDevice *pci_dev) |
835 | { | |
da146d0a | 836 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
95524ae8 | 837 | int r; |
da146d0a AK |
838 | |
839 | memory_region_destroy(&proxy->bar); | |
95524ae8 AK |
840 | r = msix_uninit(pci_dev, &proxy->msix_bar); |
841 | memory_region_destroy(&proxy->msix_bar); | |
842 | return r; | |
0f457d91 MT |
843 | } |
844 | ||
56a14938 GH |
845 | static int virtio_blk_exit_pci(PCIDevice *pci_dev) |
846 | { | |
847 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
848 | ||
25db9ebe | 849 | virtio_pci_stop_ioeventfd(proxy); |
9d0d3138 | 850 | virtio_blk_exit(proxy->vdev); |
0f457d91 | 851 | return virtio_exit_pci(pci_dev); |
56a14938 GH |
852 | } |
853 | ||
98b19252 | 854 | static int virtio_serial_init_pci(PCIDevice *pci_dev) |
21d58b57 | 855 | { |
d6beee99 | 856 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
85c2c735 MM |
857 | VirtIODevice *vdev; |
858 | ||
d6beee99 GH |
859 | if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER && |
860 | proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ | |
861 | proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */ | |
862 | proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; | |
863 | ||
6b331efb | 864 | vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); |
25fe3654 AS |
865 | if (!vdev) { |
866 | return -1; | |
867 | } | |
573fb60c | 868 | vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
6b331efb | 869 | ? proxy->serial.max_virtserial_ports + 1 |
573fb60c | 870 | : proxy->nvectors; |
e75ccf2c | 871 | virtio_init_pci(proxy, vdev); |
a1829205 | 872 | proxy->nvectors = vdev->nvectors; |
81a322d4 | 873 | return 0; |
53c25cea PB |
874 | } |
875 | ||
8b53a865 AS |
876 | static int virtio_serial_exit_pci(PCIDevice *pci_dev) |
877 | { | |
878 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
879 | ||
32059220 | 880 | virtio_pci_stop_ioeventfd(proxy); |
8b53a865 AS |
881 | virtio_serial_exit(proxy->vdev); |
882 | return virtio_exit_pci(pci_dev); | |
883 | } | |
884 | ||
81a322d4 | 885 | static int virtio_net_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
886 | { |
887 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
888 | VirtIODevice *vdev; | |
889 | ||
f0c07c7c | 890 | vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); |
a1e0fea5 | 891 | |
97b15621 | 892 | vdev->nvectors = proxy->nvectors; |
e75ccf2c | 893 | virtio_init_pci(proxy, vdev); |
a1e0fea5 GH |
894 | |
895 | /* make the actual value visible */ | |
896 | proxy->nvectors = vdev->nvectors; | |
81a322d4 | 897 | return 0; |
53c25cea PB |
898 | } |
899 | ||
97b15621 GH |
900 | static int virtio_net_exit_pci(PCIDevice *pci_dev) |
901 | { | |
902 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
903 | ||
25db9ebe | 904 | virtio_pci_stop_ioeventfd(proxy); |
97b15621 GH |
905 | virtio_net_exit(proxy->vdev); |
906 | return virtio_exit_pci(pci_dev); | |
907 | } | |
908 | ||
81a322d4 | 909 | static int virtio_balloon_init_pci(PCIDevice *pci_dev) |
53c25cea PB |
910 | { |
911 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
912 | VirtIODevice *vdev; | |
913 | ||
2ba1d381 DG |
914 | if (proxy->class_code != PCI_CLASS_OTHERS && |
915 | proxy->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */ | |
916 | proxy->class_code = PCI_CLASS_OTHERS; | |
917 | } | |
918 | ||
53c25cea | 919 | vdev = virtio_balloon_init(&pci_dev->qdev); |
f76f6655 AS |
920 | if (!vdev) { |
921 | return -1; | |
922 | } | |
e75ccf2c | 923 | virtio_init_pci(proxy, vdev); |
81a322d4 | 924 | return 0; |
53c25cea PB |
925 | } |
926 | ||
855d7e25 AS |
927 | static int virtio_balloon_exit_pci(PCIDevice *pci_dev) |
928 | { | |
929 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
930 | ||
931 | virtio_pci_stop_ioeventfd(proxy); | |
932 | virtio_balloon_exit(proxy->vdev); | |
933 | return virtio_exit_pci(pci_dev); | |
934 | } | |
935 | ||
40021f08 AL |
936 | static Property virtio_blk_properties[] = { |
937 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
12c5674b PB |
938 | DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf), |
939 | DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial), | |
a6c5c84a PB |
940 | #ifdef __linux__ |
941 | DEFINE_PROP_BIT("scsi", VirtIOPCIProxy, blk.scsi, 0, true), | |
942 | #endif | |
40021f08 AL |
943 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
944 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
945 | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), | |
946 | DEFINE_PROP_END_OF_LIST(), | |
e855761c AL |
947 | }; |
948 | ||
40021f08 AL |
949 | static void virtio_blk_class_init(ObjectClass *klass, void *data) |
950 | { | |
39bffca2 | 951 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
952 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
953 | ||
954 | k->init = virtio_blk_init_pci; | |
955 | k->exit = virtio_blk_exit_pci; | |
956 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
957 | k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; | |
958 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
959 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
39bffca2 AL |
960 | dc->reset = virtio_pci_reset; |
961 | dc->props = virtio_blk_properties; | |
40021f08 AL |
962 | } |
963 | ||
39bffca2 AL |
964 | static TypeInfo virtio_blk_info = { |
965 | .name = "virtio-blk-pci", | |
966 | .parent = TYPE_PCI_DEVICE, | |
967 | .instance_size = sizeof(VirtIOPCIProxy), | |
968 | .class_init = virtio_blk_class_init, | |
40021f08 AL |
969 | }; |
970 | ||
971 | static Property virtio_net_properties[] = { | |
972 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), | |
973 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), | |
974 | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), | |
975 | DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), | |
976 | DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL), | |
977 | DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST), | |
978 | DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx), | |
979 | DEFINE_PROP_END_OF_LIST(), | |
980 | }; | |
981 | ||
982 | static void virtio_net_class_init(ObjectClass *klass, void *data) | |
983 | { | |
39bffca2 | 984 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
985 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
986 | ||
987 | k->init = virtio_net_init_pci; | |
988 | k->exit = virtio_net_exit_pci; | |
989 | k->romfile = "pxe-virtio.rom"; | |
990 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
991 | k->device_id = PCI_DEVICE_ID_VIRTIO_NET; | |
992 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
993 | k->class_id = PCI_CLASS_NETWORK_ETHERNET; | |
39bffca2 AL |
994 | dc->reset = virtio_pci_reset; |
995 | dc->props = virtio_net_properties; | |
40021f08 AL |
996 | } |
997 | ||
39bffca2 AL |
998 | static TypeInfo virtio_net_info = { |
999 | .name = "virtio-net-pci", | |
1000 | .parent = TYPE_PCI_DEVICE, | |
1001 | .instance_size = sizeof(VirtIOPCIProxy), | |
1002 | .class_init = virtio_net_class_init, | |
e855761c AL |
1003 | }; |
1004 | ||
40021f08 AL |
1005 | static Property virtio_serial_properties[] = { |
1006 | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), | |
1007 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED), | |
1008 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), | |
1009 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
1010 | DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), | |
1011 | DEFINE_PROP_END_OF_LIST(), | |
e855761c AL |
1012 | }; |
1013 | ||
40021f08 AL |
1014 | static void virtio_serial_class_init(ObjectClass *klass, void *data) |
1015 | { | |
39bffca2 | 1016 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
1017 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1018 | ||
1019 | k->init = virtio_serial_init_pci; | |
1020 | k->exit = virtio_serial_exit_pci; | |
1021 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1022 | k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; | |
1023 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
1024 | k->class_id = PCI_CLASS_COMMUNICATION_OTHER; | |
39bffca2 AL |
1025 | dc->reset = virtio_pci_reset; |
1026 | dc->props = virtio_serial_properties; | |
40021f08 AL |
1027 | } |
1028 | ||
39bffca2 AL |
1029 | static TypeInfo virtio_serial_info = { |
1030 | .name = "virtio-serial-pci", | |
1031 | .parent = TYPE_PCI_DEVICE, | |
1032 | .instance_size = sizeof(VirtIOPCIProxy), | |
1033 | .class_init = virtio_serial_class_init, | |
40021f08 AL |
1034 | }; |
1035 | ||
1036 | static Property virtio_balloon_properties[] = { | |
1037 | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), | |
2ba1d381 | 1038 | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
40021f08 AL |
1039 | DEFINE_PROP_END_OF_LIST(), |
1040 | }; | |
1041 | ||
1042 | static void virtio_balloon_class_init(ObjectClass *klass, void *data) | |
1043 | { | |
39bffca2 | 1044 | DeviceClass *dc = DEVICE_CLASS(klass); |
40021f08 AL |
1045 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1046 | ||
1047 | k->init = virtio_balloon_init_pci; | |
1048 | k->exit = virtio_balloon_exit_pci; | |
1049 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1050 | k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; | |
1051 | k->revision = VIRTIO_PCI_ABI_VERSION; | |
2ba1d381 | 1052 | k->class_id = PCI_CLASS_OTHERS; |
39bffca2 AL |
1053 | dc->reset = virtio_pci_reset; |
1054 | dc->props = virtio_balloon_properties; | |
40021f08 AL |
1055 | } |
1056 | ||
39bffca2 AL |
1057 | static TypeInfo virtio_balloon_info = { |
1058 | .name = "virtio-balloon-pci", | |
1059 | .parent = TYPE_PCI_DEVICE, | |
1060 | .instance_size = sizeof(VirtIOPCIProxy), | |
1061 | .class_init = virtio_balloon_class_init, | |
0aab0d3a GH |
1062 | }; |
1063 | ||
973abc7f SH |
1064 | static int virtio_scsi_init_pci(PCIDevice *pci_dev) |
1065 | { | |
1066 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
1067 | VirtIODevice *vdev; | |
1068 | ||
1069 | vdev = virtio_scsi_init(&pci_dev->qdev, &proxy->scsi); | |
1070 | if (!vdev) { | |
1071 | return -EINVAL; | |
1072 | } | |
1073 | ||
1074 | vdev->nvectors = proxy->nvectors; | |
1075 | virtio_init_pci(proxy, vdev); | |
1076 | ||
1077 | /* make the actual value visible */ | |
1078 | proxy->nvectors = vdev->nvectors; | |
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | static int virtio_scsi_exit_pci(PCIDevice *pci_dev) | |
1083 | { | |
1084 | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); | |
1085 | ||
1086 | virtio_scsi_exit(proxy->vdev); | |
1087 | return virtio_exit_pci(pci_dev); | |
1088 | } | |
1089 | ||
1090 | static Property virtio_scsi_properties[] = { | |
1091 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), | |
1092 | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi), | |
1093 | DEFINE_PROP_END_OF_LIST(), | |
1094 | }; | |
1095 | ||
1096 | static void virtio_scsi_class_init(ObjectClass *klass, void *data) | |
1097 | { | |
1098 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1099 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1100 | ||
1101 | k->init = virtio_scsi_init_pci; | |
1102 | k->exit = virtio_scsi_exit_pci; | |
1103 | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; | |
1104 | k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
1105 | k->revision = 0x00; | |
1106 | k->class_id = PCI_CLASS_STORAGE_SCSI; | |
1107 | dc->reset = virtio_pci_reset; | |
1108 | dc->props = virtio_scsi_properties; | |
1109 | } | |
1110 | ||
1111 | static TypeInfo virtio_scsi_info = { | |
1112 | .name = "virtio-scsi-pci", | |
1113 | .parent = TYPE_PCI_DEVICE, | |
1114 | .instance_size = sizeof(VirtIOPCIProxy), | |
1115 | .class_init = virtio_scsi_class_init, | |
1116 | }; | |
1117 | ||
83f7d43a | 1118 | static void virtio_pci_register_types(void) |
53c25cea | 1119 | { |
39bffca2 | 1120 | type_register_static(&virtio_blk_info); |
39bffca2 | 1121 | type_register_static(&virtio_net_info); |
39bffca2 | 1122 | type_register_static(&virtio_serial_info); |
39bffca2 | 1123 | type_register_static(&virtio_balloon_info); |
973abc7f | 1124 | type_register_static(&virtio_scsi_info); |
53c25cea PB |
1125 | } |
1126 | ||
83f7d43a | 1127 | type_init(virtio_pci_register_types) |