root / hw / virtio / virtio-pci.c @ 50787628
History | View | Annotate | Download (51 kB)
1 |
/*
|
---|---|
2 |
* Virtio PCI Bindings
|
3 |
*
|
4 |
* Copyright IBM, Corp. 2007
|
5 |
* Copyright (c) 2009 CodeSourcery
|
6 |
*
|
7 |
* Authors:
|
8 |
* Anthony Liguori <aliguori@us.ibm.com>
|
9 |
* Paul Brook <paul@codesourcery.com>
|
10 |
*
|
11 |
* This work is licensed under the terms of the GNU GPL, version 2. See
|
12 |
* the COPYING file in the top-level directory.
|
13 |
*
|
14 |
* Contributions after 2012-01-13 are licensed under the terms of the
|
15 |
* GNU GPL, version 2 or (at your option) any later version.
|
16 |
*/
|
17 |
|
18 |
#include <inttypes.h> |
19 |
|
20 |
#include "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" |
26 |
#include "hw/pci/pci.h" |
27 |
#include "qemu/error-report.h" |
28 |
#include "hw/pci/msi.h" |
29 |
#include "hw/pci/msix.h" |
30 |
#include "hw/loader.h" |
31 |
#include "sysemu/kvm.h" |
32 |
#include "sysemu/blockdev.h" |
33 |
#include "virtio-pci.h" |
34 |
#include "qemu/range.h" |
35 |
#include "hw/virtio/virtio-bus.h" |
36 |
#include "qapi/visitor.h" |
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 |
|
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) |
84 |
|
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 |
|
89 |
/* Flags track per-device state like workarounds for quirks in older guests. */
|
90 |
#define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) |
91 |
|
92 |
/* QEMU doesn't strictly need write barriers since everything runs in
|
93 |
* lock-step. We'll leave the calls to wmb() in though to make it obvious for
|
94 |
* KVM or if kqemu gets SMP support.
|
95 |
*/
|
96 |
#define wmb() do { } while (0) |
97 |
|
98 |
/* HACK for virtio to determine if it's running a big endian guest */
|
99 |
bool virtio_is_big_endian(void); |
100 |
|
101 |
/* virtio device */
|
102 |
/* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */
|
103 |
static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d) |
104 |
{ |
105 |
return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
|
106 |
} |
107 |
|
108 |
/* DeviceState to VirtIOPCIProxy. Note: used on datapath,
|
109 |
* be careful and test performance if you change this.
|
110 |
*/
|
111 |
static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d) |
112 |
{ |
113 |
return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
|
114 |
} |
115 |
|
116 |
static void virtio_pci_notify(DeviceState *d, uint16_t vector) |
117 |
{ |
118 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d); |
119 |
if (msix_enabled(&proxy->pci_dev))
|
120 |
msix_notify(&proxy->pci_dev, vector); |
121 |
else
|
122 |
qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); |
123 |
} |
124 |
|
125 |
static void virtio_pci_save_config(DeviceState *d, QEMUFile *f) |
126 |
{ |
127 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
128 |
pci_device_save(&proxy->pci_dev, f); |
129 |
msix_save(&proxy->pci_dev, f); |
130 |
if (msix_present(&proxy->pci_dev))
|
131 |
qemu_put_be16(f, proxy->vdev->config_vector); |
132 |
} |
133 |
|
134 |
static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f) |
135 |
{ |
136 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
137 |
if (msix_present(&proxy->pci_dev))
|
138 |
qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); |
139 |
} |
140 |
|
141 |
static int virtio_pci_load_config(DeviceState *d, QEMUFile *f) |
142 |
{ |
143 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
144 |
int ret;
|
145 |
ret = pci_device_load(&proxy->pci_dev, f); |
146 |
if (ret) {
|
147 |
return ret;
|
148 |
} |
149 |
msix_unuse_all_vectors(&proxy->pci_dev); |
150 |
msix_load(&proxy->pci_dev, f); |
151 |
if (msix_present(&proxy->pci_dev)) {
|
152 |
qemu_get_be16s(f, &proxy->vdev->config_vector); |
153 |
} else {
|
154 |
proxy->vdev->config_vector = VIRTIO_NO_VECTOR; |
155 |
} |
156 |
if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
|
157 |
return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
|
158 |
} |
159 |
return 0; |
160 |
} |
161 |
|
162 |
static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) |
163 |
{ |
164 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
165 |
uint16_t vector; |
166 |
if (msix_present(&proxy->pci_dev)) {
|
167 |
qemu_get_be16s(f, &vector); |
168 |
} else {
|
169 |
vector = VIRTIO_NO_VECTOR; |
170 |
} |
171 |
virtio_queue_set_vector(proxy->vdev, n, vector); |
172 |
if (vector != VIRTIO_NO_VECTOR) {
|
173 |
return msix_vector_use(&proxy->pci_dev, vector);
|
174 |
} |
175 |
return 0; |
176 |
} |
177 |
|
178 |
static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
179 |
int n, bool assign, bool set_handler) |
180 |
{ |
181 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
182 |
EventNotifier *notifier = virtio_queue_get_host_notifier(vq); |
183 |
int r = 0; |
184 |
|
185 |
if (assign) {
|
186 |
r = event_notifier_init(notifier, 1);
|
187 |
if (r < 0) { |
188 |
error_report("%s: unable to init event notifier: %d",
|
189 |
__func__, r); |
190 |
return r;
|
191 |
} |
192 |
virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
|
193 |
memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
|
194 |
true, n, notifier);
|
195 |
} else {
|
196 |
memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
|
197 |
true, n, notifier);
|
198 |
virtio_queue_set_host_notifier_fd_handler(vq, false, false); |
199 |
event_notifier_cleanup(notifier); |
200 |
} |
201 |
return r;
|
202 |
} |
203 |
|
204 |
static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
205 |
{ |
206 |
int n, r;
|
207 |
|
208 |
if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) ||
|
209 |
proxy->ioeventfd_disabled || |
210 |
proxy->ioeventfd_started) { |
211 |
return;
|
212 |
} |
213 |
|
214 |
for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
215 |
if (!virtio_queue_get_num(proxy->vdev, n)) {
|
216 |
continue;
|
217 |
} |
218 |
|
219 |
r = virtio_pci_set_host_notifier_internal(proxy, n, true, true); |
220 |
if (r < 0) { |
221 |
goto assign_error;
|
222 |
} |
223 |
} |
224 |
proxy->ioeventfd_started = true;
|
225 |
return;
|
226 |
|
227 |
assign_error:
|
228 |
while (--n >= 0) { |
229 |
if (!virtio_queue_get_num(proxy->vdev, n)) {
|
230 |
continue;
|
231 |
} |
232 |
|
233 |
r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
234 |
assert(r >= 0);
|
235 |
} |
236 |
proxy->ioeventfd_started = false;
|
237 |
error_report("%s: failed. Fallback to a userspace (slower).", __func__);
|
238 |
} |
239 |
|
240 |
static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
241 |
{ |
242 |
int r;
|
243 |
int n;
|
244 |
|
245 |
if (!proxy->ioeventfd_started) {
|
246 |
return;
|
247 |
} |
248 |
|
249 |
for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
250 |
if (!virtio_queue_get_num(proxy->vdev, n)) {
|
251 |
continue;
|
252 |
} |
253 |
|
254 |
r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
255 |
assert(r >= 0);
|
256 |
} |
257 |
proxy->ioeventfd_started = false;
|
258 |
} |
259 |
|
260 |
static void virtio_pci_reset(DeviceState *d) |
261 |
{ |
262 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
263 |
virtio_pci_stop_ioeventfd(proxy); |
264 |
virtio_reset(proxy->vdev); |
265 |
msix_unuse_all_vectors(&proxy->pci_dev); |
266 |
proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
267 |
} |
268 |
|
269 |
static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
270 |
{ |
271 |
VirtIOPCIProxy *proxy = opaque; |
272 |
VirtIODevice *vdev = proxy->vdev; |
273 |
hwaddr pa; |
274 |
|
275 |
switch (addr) {
|
276 |
case VIRTIO_PCI_GUEST_FEATURES:
|
277 |
/* Guest does not negotiate properly? We have to assume nothing. */
|
278 |
if (val & (1 << VIRTIO_F_BAD_FEATURE)) { |
279 |
val = vdev->bad_features ? vdev->bad_features(vdev) : 0;
|
280 |
} |
281 |
virtio_set_features(vdev, val); |
282 |
break;
|
283 |
case VIRTIO_PCI_QUEUE_PFN:
|
284 |
pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
285 |
if (pa == 0) { |
286 |
virtio_pci_stop_ioeventfd(proxy); |
287 |
virtio_reset(proxy->vdev); |
288 |
msix_unuse_all_vectors(&proxy->pci_dev); |
289 |
} |
290 |
else
|
291 |
virtio_queue_set_addr(vdev, vdev->queue_sel, pa); |
292 |
break;
|
293 |
case VIRTIO_PCI_QUEUE_SEL:
|
294 |
if (val < VIRTIO_PCI_QUEUE_MAX)
|
295 |
vdev->queue_sel = val; |
296 |
break;
|
297 |
case VIRTIO_PCI_QUEUE_NOTIFY:
|
298 |
if (val < VIRTIO_PCI_QUEUE_MAX) {
|
299 |
virtio_queue_notify(vdev, val); |
300 |
} |
301 |
break;
|
302 |
case VIRTIO_PCI_STATUS:
|
303 |
if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
304 |
virtio_pci_stop_ioeventfd(proxy); |
305 |
} |
306 |
|
307 |
virtio_set_status(vdev, val & 0xFF);
|
308 |
|
309 |
if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
|
310 |
virtio_pci_start_ioeventfd(proxy); |
311 |
} |
312 |
|
313 |
if (vdev->status == 0) { |
314 |
virtio_reset(proxy->vdev); |
315 |
msix_unuse_all_vectors(&proxy->pci_dev); |
316 |
} |
317 |
|
318 |
/* Linux before 2.6.34 sets the device as OK without enabling
|
319 |
the PCI device bus master bit. In this case we need to disable
|
320 |
some safety checks. */
|
321 |
if ((val & VIRTIO_CONFIG_S_DRIVER_OK) &&
|
322 |
!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
323 |
proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
324 |
} |
325 |
break;
|
326 |
case VIRTIO_MSI_CONFIG_VECTOR:
|
327 |
msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); |
328 |
/* Make it possible for guest to discover an error took place. */
|
329 |
if (msix_vector_use(&proxy->pci_dev, val) < 0) |
330 |
val = VIRTIO_NO_VECTOR; |
331 |
vdev->config_vector = val; |
332 |
break;
|
333 |
case VIRTIO_MSI_QUEUE_VECTOR:
|
334 |
msix_vector_unuse(&proxy->pci_dev, |
335 |
virtio_queue_vector(vdev, vdev->queue_sel)); |
336 |
/* Make it possible for guest to discover an error took place. */
|
337 |
if (msix_vector_use(&proxy->pci_dev, val) < 0) |
338 |
val = VIRTIO_NO_VECTOR; |
339 |
virtio_queue_set_vector(vdev, vdev->queue_sel, val); |
340 |
break;
|
341 |
default:
|
342 |
error_report("%s: unexpected address 0x%x value 0x%x",
|
343 |
__func__, addr, val); |
344 |
break;
|
345 |
} |
346 |
} |
347 |
|
348 |
static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
|
349 |
{ |
350 |
VirtIODevice *vdev = proxy->vdev; |
351 |
uint32_t ret = 0xFFFFFFFF;
|
352 |
|
353 |
switch (addr) {
|
354 |
case VIRTIO_PCI_HOST_FEATURES:
|
355 |
ret = proxy->host_features; |
356 |
break;
|
357 |
case VIRTIO_PCI_GUEST_FEATURES:
|
358 |
ret = vdev->guest_features; |
359 |
break;
|
360 |
case VIRTIO_PCI_QUEUE_PFN:
|
361 |
ret = virtio_queue_get_addr(vdev, vdev->queue_sel) |
362 |
>> VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
363 |
break;
|
364 |
case VIRTIO_PCI_QUEUE_NUM:
|
365 |
ret = virtio_queue_get_num(vdev, vdev->queue_sel); |
366 |
break;
|
367 |
case VIRTIO_PCI_QUEUE_SEL:
|
368 |
ret = vdev->queue_sel; |
369 |
break;
|
370 |
case VIRTIO_PCI_STATUS:
|
371 |
ret = vdev->status; |
372 |
break;
|
373 |
case VIRTIO_PCI_ISR:
|
374 |
/* reading from the ISR also clears it. */
|
375 |
ret = vdev->isr; |
376 |
vdev->isr = 0;
|
377 |
qemu_set_irq(proxy->pci_dev.irq[0], 0); |
378 |
break;
|
379 |
case VIRTIO_MSI_CONFIG_VECTOR:
|
380 |
ret = vdev->config_vector; |
381 |
break;
|
382 |
case VIRTIO_MSI_QUEUE_VECTOR:
|
383 |
ret = virtio_queue_vector(vdev, vdev->queue_sel); |
384 |
break;
|
385 |
default:
|
386 |
break;
|
387 |
} |
388 |
|
389 |
return ret;
|
390 |
} |
391 |
|
392 |
static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, |
393 |
unsigned size)
|
394 |
{ |
395 |
VirtIOPCIProxy *proxy = opaque; |
396 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
397 |
uint64_t val = 0;
|
398 |
if (addr < config) {
|
399 |
return virtio_ioport_read(proxy, addr);
|
400 |
} |
401 |
addr -= config; |
402 |
|
403 |
switch (size) {
|
404 |
case 1: |
405 |
val = virtio_config_readb(proxy->vdev, addr); |
406 |
break;
|
407 |
case 2: |
408 |
val = virtio_config_readw(proxy->vdev, addr); |
409 |
if (virtio_is_big_endian()) {
|
410 |
val = bswap16(val); |
411 |
} |
412 |
break;
|
413 |
case 4: |
414 |
val = virtio_config_readl(proxy->vdev, addr); |
415 |
if (virtio_is_big_endian()) {
|
416 |
val = bswap32(val); |
417 |
} |
418 |
break;
|
419 |
} |
420 |
return val;
|
421 |
} |
422 |
|
423 |
static void virtio_pci_config_write(void *opaque, hwaddr addr, |
424 |
uint64_t val, unsigned size)
|
425 |
{ |
426 |
VirtIOPCIProxy *proxy = opaque; |
427 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
428 |
if (addr < config) {
|
429 |
virtio_ioport_write(proxy, addr, val); |
430 |
return;
|
431 |
} |
432 |
addr -= config; |
433 |
/*
|
434 |
* Virtio-PCI is odd. Ioports are LE but config space is target native
|
435 |
* endian.
|
436 |
*/
|
437 |
switch (size) {
|
438 |
case 1: |
439 |
virtio_config_writeb(proxy->vdev, addr, val); |
440 |
break;
|
441 |
case 2: |
442 |
if (virtio_is_big_endian()) {
|
443 |
val = bswap16(val); |
444 |
} |
445 |
virtio_config_writew(proxy->vdev, addr, val); |
446 |
break;
|
447 |
case 4: |
448 |
if (virtio_is_big_endian()) {
|
449 |
val = bswap32(val); |
450 |
} |
451 |
virtio_config_writel(proxy->vdev, addr, val); |
452 |
break;
|
453 |
} |
454 |
} |
455 |
|
456 |
static const MemoryRegionOps virtio_pci_config_ops = { |
457 |
.read = virtio_pci_config_read, |
458 |
.write = virtio_pci_config_write, |
459 |
.impl = { |
460 |
.min_access_size = 1,
|
461 |
.max_access_size = 4,
|
462 |
}, |
463 |
.endianness = DEVICE_LITTLE_ENDIAN, |
464 |
}; |
465 |
|
466 |
static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, |
467 |
uint32_t val, int len)
|
468 |
{ |
469 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
470 |
|
471 |
pci_default_write_config(pci_dev, address, val, len); |
472 |
|
473 |
if (range_covers_byte(address, len, PCI_COMMAND) &&
|
474 |
!(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && |
475 |
!(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { |
476 |
virtio_pci_stop_ioeventfd(proxy); |
477 |
virtio_set_status(proxy->vdev, |
478 |
proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); |
479 |
} |
480 |
} |
481 |
|
482 |
static unsigned virtio_pci_get_features(DeviceState *d) |
483 |
{ |
484 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
485 |
return proxy->host_features;
|
486 |
} |
487 |
|
488 |
static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, |
489 |
unsigned int queue_no, |
490 |
unsigned int vector, |
491 |
MSIMessage msg) |
492 |
{ |
493 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
494 |
int ret;
|
495 |
|
496 |
if (irqfd->users == 0) { |
497 |
ret = kvm_irqchip_add_msi_route(kvm_state, msg); |
498 |
if (ret < 0) { |
499 |
return ret;
|
500 |
} |
501 |
irqfd->virq = ret; |
502 |
} |
503 |
irqfd->users++; |
504 |
return 0; |
505 |
} |
506 |
|
507 |
static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, |
508 |
unsigned int vector) |
509 |
{ |
510 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
511 |
if (--irqfd->users == 0) { |
512 |
kvm_irqchip_release_virq(kvm_state, irqfd->virq); |
513 |
} |
514 |
} |
515 |
|
516 |
static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy, |
517 |
unsigned int queue_no, |
518 |
unsigned int vector) |
519 |
{ |
520 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
521 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
522 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
523 |
int ret;
|
524 |
ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, irqfd->virq); |
525 |
return ret;
|
526 |
} |
527 |
|
528 |
static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy, |
529 |
unsigned int queue_no, |
530 |
unsigned int vector) |
531 |
{ |
532 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
533 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
534 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
535 |
int ret;
|
536 |
|
537 |
ret = kvm_irqchip_remove_irqfd_notifier(kvm_state, n, irqfd->virq); |
538 |
assert(ret == 0);
|
539 |
} |
540 |
|
541 |
static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs) |
542 |
{ |
543 |
PCIDevice *dev = &proxy->pci_dev; |
544 |
VirtIODevice *vdev = proxy->vdev; |
545 |
unsigned int vector; |
546 |
int ret, queue_no;
|
547 |
MSIMessage msg; |
548 |
|
549 |
for (queue_no = 0; queue_no < nvqs; queue_no++) { |
550 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
551 |
break;
|
552 |
} |
553 |
vector = virtio_queue_vector(vdev, queue_no); |
554 |
if (vector >= msix_nr_vectors_allocated(dev)) {
|
555 |
continue;
|
556 |
} |
557 |
msg = msix_get_message(dev, vector); |
558 |
ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); |
559 |
if (ret < 0) { |
560 |
goto undo;
|
561 |
} |
562 |
/* If guest supports masking, set up irqfd now.
|
563 |
* Otherwise, delay until unmasked in the frontend.
|
564 |
*/
|
565 |
if (proxy->vdev->guest_notifier_mask) {
|
566 |
ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); |
567 |
if (ret < 0) { |
568 |
kvm_virtio_pci_vq_vector_release(proxy, vector); |
569 |
goto undo;
|
570 |
} |
571 |
} |
572 |
} |
573 |
return 0; |
574 |
|
575 |
undo:
|
576 |
while (--queue_no >= 0) { |
577 |
vector = virtio_queue_vector(vdev, queue_no); |
578 |
if (vector >= msix_nr_vectors_allocated(dev)) {
|
579 |
continue;
|
580 |
} |
581 |
if (proxy->vdev->guest_notifier_mask) {
|
582 |
kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
583 |
} |
584 |
kvm_virtio_pci_vq_vector_release(proxy, vector); |
585 |
} |
586 |
return ret;
|
587 |
} |
588 |
|
589 |
static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs) |
590 |
{ |
591 |
PCIDevice *dev = &proxy->pci_dev; |
592 |
VirtIODevice *vdev = proxy->vdev; |
593 |
unsigned int vector; |
594 |
int queue_no;
|
595 |
|
596 |
for (queue_no = 0; queue_no < nvqs; queue_no++) { |
597 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
598 |
break;
|
599 |
} |
600 |
vector = virtio_queue_vector(vdev, queue_no); |
601 |
if (vector >= msix_nr_vectors_allocated(dev)) {
|
602 |
continue;
|
603 |
} |
604 |
/* If guest supports masking, clean up irqfd now.
|
605 |
* Otherwise, it was cleaned when masked in the frontend.
|
606 |
*/
|
607 |
if (proxy->vdev->guest_notifier_mask) {
|
608 |
kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
609 |
} |
610 |
kvm_virtio_pci_vq_vector_release(proxy, vector); |
611 |
} |
612 |
} |
613 |
|
614 |
static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy, |
615 |
unsigned int queue_no, |
616 |
unsigned int vector, |
617 |
MSIMessage msg) |
618 |
{ |
619 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
620 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
621 |
VirtIOIRQFD *irqfd; |
622 |
int ret = 0; |
623 |
|
624 |
if (proxy->vector_irqfd) {
|
625 |
irqfd = &proxy->vector_irqfd[vector]; |
626 |
if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) {
|
627 |
ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg); |
628 |
if (ret < 0) { |
629 |
return ret;
|
630 |
} |
631 |
} |
632 |
} |
633 |
|
634 |
/* If guest supports masking, irqfd is already setup, unmask it.
|
635 |
* Otherwise, set it up now.
|
636 |
*/
|
637 |
if (proxy->vdev->guest_notifier_mask) {
|
638 |
proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, false);
|
639 |
/* Test after unmasking to avoid losing events. */
|
640 |
if (proxy->vdev->guest_notifier_pending &&
|
641 |
proxy->vdev->guest_notifier_pending(proxy->vdev, queue_no)) { |
642 |
event_notifier_set(n); |
643 |
} |
644 |
} else {
|
645 |
ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); |
646 |
} |
647 |
return ret;
|
648 |
} |
649 |
|
650 |
static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy, |
651 |
unsigned int queue_no, |
652 |
unsigned int vector) |
653 |
{ |
654 |
/* If guest supports masking, keep irqfd but mask it.
|
655 |
* Otherwise, clean it up now.
|
656 |
*/
|
657 |
if (proxy->vdev->guest_notifier_mask) {
|
658 |
proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, true);
|
659 |
} else {
|
660 |
kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
661 |
} |
662 |
} |
663 |
|
664 |
static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector, |
665 |
MSIMessage msg) |
666 |
{ |
667 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
668 |
VirtIODevice *vdev = proxy->vdev; |
669 |
int ret, queue_no;
|
670 |
|
671 |
for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
672 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
673 |
break;
|
674 |
} |
675 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
676 |
continue;
|
677 |
} |
678 |
ret = virtio_pci_vq_vector_unmask(proxy, queue_no, vector, msg); |
679 |
if (ret < 0) { |
680 |
goto undo;
|
681 |
} |
682 |
} |
683 |
return 0; |
684 |
|
685 |
undo:
|
686 |
while (--queue_no >= 0) { |
687 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
688 |
continue;
|
689 |
} |
690 |
virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
691 |
} |
692 |
return ret;
|
693 |
} |
694 |
|
695 |
static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector) |
696 |
{ |
697 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
698 |
VirtIODevice *vdev = proxy->vdev; |
699 |
int queue_no;
|
700 |
|
701 |
for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
702 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
703 |
break;
|
704 |
} |
705 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
706 |
continue;
|
707 |
} |
708 |
virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
709 |
} |
710 |
} |
711 |
|
712 |
static void virtio_pci_vector_poll(PCIDevice *dev, |
713 |
unsigned int vector_start, |
714 |
unsigned int vector_end) |
715 |
{ |
716 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
717 |
VirtIODevice *vdev = proxy->vdev; |
718 |
int queue_no;
|
719 |
unsigned int vector; |
720 |
EventNotifier *notifier; |
721 |
VirtQueue *vq; |
722 |
|
723 |
for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
724 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
725 |
break;
|
726 |
} |
727 |
vector = virtio_queue_vector(vdev, queue_no); |
728 |
if (vector < vector_start || vector >= vector_end ||
|
729 |
!msix_is_masked(dev, vector)) { |
730 |
continue;
|
731 |
} |
732 |
vq = virtio_get_queue(vdev, queue_no); |
733 |
notifier = virtio_queue_get_guest_notifier(vq); |
734 |
if (vdev->guest_notifier_pending) {
|
735 |
if (vdev->guest_notifier_pending(vdev, queue_no)) {
|
736 |
msix_set_pending(dev, vector); |
737 |
} |
738 |
} else if (event_notifier_test_and_clear(notifier)) { |
739 |
msix_set_pending(dev, vector); |
740 |
} |
741 |
} |
742 |
} |
743 |
|
744 |
static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign, |
745 |
bool with_irqfd)
|
746 |
{ |
747 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
748 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
749 |
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
750 |
|
751 |
if (assign) {
|
752 |
int r = event_notifier_init(notifier, 0); |
753 |
if (r < 0) { |
754 |
return r;
|
755 |
} |
756 |
virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
|
757 |
} else {
|
758 |
virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
|
759 |
event_notifier_cleanup(notifier); |
760 |
} |
761 |
|
762 |
return 0; |
763 |
} |
764 |
|
765 |
static bool virtio_pci_query_guest_notifiers(DeviceState *d) |
766 |
{ |
767 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
768 |
return msix_enabled(&proxy->pci_dev);
|
769 |
} |
770 |
|
771 |
static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) |
772 |
{ |
773 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
774 |
VirtIODevice *vdev = proxy->vdev; |
775 |
int r, n;
|
776 |
bool with_irqfd = msix_enabled(&proxy->pci_dev) &&
|
777 |
kvm_msi_via_irqfd_enabled(); |
778 |
|
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 |
|
788 |
/* Must unset vector notifier while guest notifier is still assigned */
|
789 |
if ((proxy->vector_irqfd || vdev->guest_notifier_mask) && !assign) {
|
790 |
msix_unset_vector_notifiers(&proxy->pci_dev); |
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 |
} |
796 |
} |
797 |
|
798 |
for (n = 0; n < nvqs; n++) { |
799 |
if (!virtio_queue_get_num(vdev, n)) {
|
800 |
break;
|
801 |
} |
802 |
|
803 |
r = virtio_pci_set_guest_notifier(d, n, assign, |
804 |
kvm_msi_via_irqfd_enabled()); |
805 |
if (r < 0) { |
806 |
goto assign_error;
|
807 |
} |
808 |
} |
809 |
|
810 |
/* Must set vector notifier after guest notifier has been assigned */
|
811 |
if ((with_irqfd || vdev->guest_notifier_mask) && assign) {
|
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 |
} |
820 |
} |
821 |
r = msix_set_vector_notifiers(&proxy->pci_dev, |
822 |
virtio_pci_vector_unmask, |
823 |
virtio_pci_vector_mask, |
824 |
virtio_pci_vector_poll); |
825 |
if (r < 0) { |
826 |
goto notifiers_error;
|
827 |
} |
828 |
} |
829 |
|
830 |
return 0; |
831 |
|
832 |
notifiers_error:
|
833 |
if (with_irqfd) {
|
834 |
assert(assign); |
835 |
kvm_virtio_pci_vector_release(proxy, nvqs); |
836 |
} |
837 |
|
838 |
assign_error:
|
839 |
/* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
|
840 |
assert(assign); |
841 |
while (--n >= 0) { |
842 |
virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd); |
843 |
} |
844 |
return r;
|
845 |
} |
846 |
|
847 |
static int virtio_pci_set_host_notifier(DeviceState *d, int n, bool assign) |
848 |
{ |
849 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
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; |
855 |
if (assign) {
|
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. */
|
862 |
return virtio_pci_set_host_notifier_internal(proxy, n, assign, false); |
863 |
} |
864 |
|
865 |
static void virtio_pci_vmstate_change(DeviceState *d, bool running) |
866 |
{ |
867 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
868 |
|
869 |
if (running) {
|
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 |
} |
876 |
virtio_pci_start_ioeventfd(proxy); |
877 |
} else {
|
878 |
virtio_pci_stop_ioeventfd(proxy); |
879 |
} |
880 |
} |
881 |
|
882 |
static const VirtIOBindings virtio_pci_bindings = { |
883 |
.notify = virtio_pci_notify, |
884 |
.save_config = virtio_pci_save_config, |
885 |
.load_config = virtio_pci_load_config, |
886 |
.save_queue = virtio_pci_save_queue, |
887 |
.load_queue = virtio_pci_load_queue, |
888 |
.get_features = virtio_pci_get_features, |
889 |
.query_guest_notifiers = virtio_pci_query_guest_notifiers, |
890 |
.set_host_notifier = virtio_pci_set_host_notifier, |
891 |
.set_guest_notifiers = virtio_pci_set_guest_notifiers, |
892 |
.vmstate_change = virtio_pci_vmstate_change, |
893 |
}; |
894 |
|
895 |
void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
|
896 |
{ |
897 |
uint8_t *config; |
898 |
uint32_t size; |
899 |
|
900 |
proxy->vdev = vdev; |
901 |
|
902 |
config = proxy->pci_dev.config; |
903 |
|
904 |
if (proxy->class_code) {
|
905 |
pci_config_set_class(config, proxy->class_code); |
906 |
} |
907 |
pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
908 |
pci_get_word(config + PCI_VENDOR_ID)); |
909 |
pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); |
910 |
config[PCI_INTERRUPT_PIN] = 1;
|
911 |
|
912 |
if (vdev->nvectors &&
|
913 |
msix_init_exclusive_bar(&proxy->pci_dev, vdev->nvectors, 1)) {
|
914 |
vdev->nvectors = 0;
|
915 |
} |
916 |
|
917 |
proxy->pci_dev.config_write = virtio_write_config; |
918 |
|
919 |
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
920 |
if (size & (size-1)) |
921 |
size = 1 << qemu_fls(size);
|
922 |
|
923 |
memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
924 |
"virtio-pci", size);
|
925 |
pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
926 |
&proxy->bar); |
927 |
|
928 |
if (!kvm_has_many_ioeventfds()) {
|
929 |
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
930 |
} |
931 |
|
932 |
virtio_bind_device(vdev, &virtio_pci_bindings, DEVICE(proxy)); |
933 |
proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
934 |
proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
935 |
proxy->host_features = vdev->get_features(vdev, proxy->host_features); |
936 |
} |
937 |
|
938 |
static void virtio_exit_pci(PCIDevice *pci_dev) |
939 |
{ |
940 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
941 |
|
942 |
memory_region_destroy(&proxy->bar); |
943 |
msix_uninit_exclusive_bar(pci_dev); |
944 |
} |
945 |
|
946 |
static int virtio_rng_init_pci(PCIDevice *pci_dev) |
947 |
{ |
948 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
949 |
VirtIODevice *vdev; |
950 |
|
951 |
if (proxy->rng.rng == NULL) { |
952 |
proxy->rng.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM)); |
953 |
|
954 |
object_property_add_child(OBJECT(pci_dev), |
955 |
"default-backend",
|
956 |
OBJECT(proxy->rng.default_backend), |
957 |
NULL);
|
958 |
|
959 |
object_property_set_link(OBJECT(pci_dev), |
960 |
OBJECT(proxy->rng.default_backend), |
961 |
"rng", NULL); |
962 |
} |
963 |
|
964 |
vdev = virtio_rng_init(&pci_dev->qdev, &proxy->rng); |
965 |
if (!vdev) {
|
966 |
return -1; |
967 |
} |
968 |
virtio_init_pci(proxy, vdev); |
969 |
return 0; |
970 |
} |
971 |
|
972 |
static void virtio_rng_exit_pci(PCIDevice *pci_dev) |
973 |
{ |
974 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
975 |
|
976 |
virtio_pci_stop_ioeventfd(proxy); |
977 |
virtio_rng_exit(proxy->vdev); |
978 |
virtio_exit_pci(pci_dev); |
979 |
} |
980 |
|
981 |
static void virtio_rng_initfn(Object *obj) |
982 |
{ |
983 |
PCIDevice *pci_dev = PCI_DEVICE(obj); |
984 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
985 |
|
986 |
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
|
987 |
(Object **)&proxy->rng.rng, NULL);
|
988 |
} |
989 |
|
990 |
static Property virtio_rng_properties[] = {
|
991 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
992 |
/* Set a default rate limit of 2^47 bytes per minute or roughly 2TB/s. If
|
993 |
you have an entropy source capable of generating more entropy than this
|
994 |
and you can pass it through via virtio-rng, then hats off to you. Until
|
995 |
then, this is unlimited for all practical purposes.
|
996 |
*/
|
997 |
DEFINE_PROP_UINT64("max-bytes", VirtIOPCIProxy, rng.max_bytes, INT64_MAX),
|
998 |
DEFINE_PROP_UINT32("period", VirtIOPCIProxy, rng.period_ms, 1 << 16), |
999 |
DEFINE_PROP_END_OF_LIST(), |
1000 |
}; |
1001 |
|
1002 |
static void virtio_rng_class_init(ObjectClass *klass, void *data) |
1003 |
{ |
1004 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1005 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1006 |
|
1007 |
k->init = virtio_rng_init_pci; |
1008 |
k->exit = virtio_rng_exit_pci; |
1009 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1010 |
k->device_id = PCI_DEVICE_ID_VIRTIO_RNG; |
1011 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
1012 |
k->class_id = PCI_CLASS_OTHERS; |
1013 |
dc->reset = virtio_pci_reset; |
1014 |
dc->props = virtio_rng_properties; |
1015 |
} |
1016 |
|
1017 |
static const TypeInfo virtio_rng_info = { |
1018 |
.name = "virtio-rng-pci",
|
1019 |
.parent = TYPE_PCI_DEVICE, |
1020 |
.instance_size = sizeof(VirtIOPCIProxy),
|
1021 |
.instance_init = virtio_rng_initfn, |
1022 |
.class_init = virtio_rng_class_init, |
1023 |
}; |
1024 |
|
1025 |
#ifdef CONFIG_VIRTFS
|
1026 |
static int virtio_9p_init_pci(PCIDevice *pci_dev) |
1027 |
{ |
1028 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
1029 |
VirtIODevice *vdev; |
1030 |
|
1031 |
vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf); |
1032 |
vdev->nvectors = proxy->nvectors; |
1033 |
virtio_init_pci(proxy, vdev); |
1034 |
/* make the actual value visible */
|
1035 |
proxy->nvectors = vdev->nvectors; |
1036 |
return 0; |
1037 |
} |
1038 |
|
1039 |
static Property virtio_9p_properties[] = {
|
1040 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
1041 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
1042 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
1043 |
DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
|
1044 |
DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
|
1045 |
DEFINE_PROP_END_OF_LIST(), |
1046 |
}; |
1047 |
|
1048 |
static void virtio_9p_class_init(ObjectClass *klass, void *data) |
1049 |
{ |
1050 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1051 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1052 |
|
1053 |
k->init = virtio_9p_init_pci; |
1054 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1055 |
k->device_id = PCI_DEVICE_ID_VIRTIO_9P; |
1056 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
1057 |
k->class_id = 0x2;
|
1058 |
dc->props = virtio_9p_properties; |
1059 |
dc->reset = virtio_pci_reset; |
1060 |
} |
1061 |
|
1062 |
static const TypeInfo virtio_9p_info = { |
1063 |
.name = "virtio-9p-pci",
|
1064 |
.parent = TYPE_PCI_DEVICE, |
1065 |
.instance_size = sizeof(VirtIOPCIProxy),
|
1066 |
.class_init = virtio_9p_class_init, |
1067 |
}; |
1068 |
#endif
|
1069 |
|
1070 |
/*
|
1071 |
* virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
|
1072 |
*/
|
1073 |
|
1074 |
/* This is called by virtio-bus just after the device is plugged. */
|
1075 |
static void virtio_pci_device_plugged(DeviceState *d) |
1076 |
{ |
1077 |
VirtIOPCIProxy *proxy = VIRTIO_PCI(d); |
1078 |
VirtioBusState *bus = &proxy->bus; |
1079 |
uint8_t *config; |
1080 |
uint32_t size; |
1081 |
|
1082 |
proxy->vdev = bus->vdev; |
1083 |
|
1084 |
config = proxy->pci_dev.config; |
1085 |
if (proxy->class_code) {
|
1086 |
pci_config_set_class(config, proxy->class_code); |
1087 |
} |
1088 |
pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
1089 |
pci_get_word(config + PCI_VENDOR_ID)); |
1090 |
pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus)); |
1091 |
config[PCI_INTERRUPT_PIN] = 1;
|
1092 |
|
1093 |
if (proxy->nvectors &&
|
1094 |
msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors, 1)) {
|
1095 |
proxy->nvectors = 0;
|
1096 |
} |
1097 |
|
1098 |
proxy->pci_dev.config_write = virtio_write_config; |
1099 |
|
1100 |
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) |
1101 |
+ virtio_bus_get_vdev_config_len(bus); |
1102 |
if (size & (size - 1)) { |
1103 |
size = 1 << qemu_fls(size);
|
1104 |
} |
1105 |
|
1106 |
memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
1107 |
"virtio-pci", size);
|
1108 |
pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
1109 |
&proxy->bar); |
1110 |
|
1111 |
if (!kvm_has_many_ioeventfds()) {
|
1112 |
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
1113 |
} |
1114 |
|
1115 |
proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
1116 |
proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
1117 |
proxy->host_features = virtio_bus_get_vdev_features(bus, |
1118 |
proxy->host_features); |
1119 |
} |
1120 |
|
1121 |
static int virtio_pci_init(PCIDevice *pci_dev) |
1122 |
{ |
1123 |
VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); |
1124 |
VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev); |
1125 |
virtio_pci_bus_new(&dev->bus, dev); |
1126 |
if (k->init != NULL) { |
1127 |
return k->init(dev);
|
1128 |
} |
1129 |
return 0; |
1130 |
} |
1131 |
|
1132 |
static void virtio_pci_exit(PCIDevice *pci_dev) |
1133 |
{ |
1134 |
VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); |
1135 |
virtio_pci_stop_ioeventfd(proxy); |
1136 |
virtio_exit_pci(pci_dev); |
1137 |
} |
1138 |
|
1139 |
/*
|
1140 |
* This will be renamed virtio_pci_reset at the end of the series.
|
1141 |
* virtio_pci_reset is still in use at this moment.
|
1142 |
*/
|
1143 |
static void virtio_pci_rst(DeviceState *qdev) |
1144 |
{ |
1145 |
VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev); |
1146 |
VirtioBusState *bus = VIRTIO_BUS(&proxy->bus); |
1147 |
virtio_pci_stop_ioeventfd(proxy); |
1148 |
virtio_bus_reset(bus); |
1149 |
msix_unuse_all_vectors(&proxy->pci_dev); |
1150 |
proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
1151 |
} |
1152 |
|
1153 |
static void virtio_pci_class_init(ObjectClass *klass, void *data) |
1154 |
{ |
1155 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1156 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1157 |
|
1158 |
k->init = virtio_pci_init; |
1159 |
k->exit = virtio_pci_exit; |
1160 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1161 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
1162 |
k->class_id = PCI_CLASS_OTHERS; |
1163 |
dc->reset = virtio_pci_rst; |
1164 |
} |
1165 |
|
1166 |
static const TypeInfo virtio_pci_info = { |
1167 |
.name = TYPE_VIRTIO_PCI, |
1168 |
.parent = TYPE_PCI_DEVICE, |
1169 |
.instance_size = sizeof(VirtIOPCIProxy),
|
1170 |
.class_init = virtio_pci_class_init, |
1171 |
.class_size = sizeof(VirtioPCIClass),
|
1172 |
.abstract = true,
|
1173 |
}; |
1174 |
|
1175 |
/* virtio-blk-pci */
|
1176 |
|
1177 |
static Property virtio_blk_pci_properties[] = {
|
1178 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
1179 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1180 |
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
1181 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
1182 |
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
|
1183 |
DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false), |
1184 |
#endif
|
1185 |
DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), |
1186 |
DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk), |
1187 |
DEFINE_PROP_END_OF_LIST(), |
1188 |
}; |
1189 |
|
1190 |
static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev) |
1191 |
{ |
1192 |
VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); |
1193 |
DeviceState *vdev = DEVICE(&dev->vdev); |
1194 |
virtio_blk_set_conf(vdev, &(dev->blk)); |
1195 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1196 |
if (qdev_init(vdev) < 0) { |
1197 |
return -1; |
1198 |
} |
1199 |
return 0; |
1200 |
} |
1201 |
|
1202 |
static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) |
1203 |
{ |
1204 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1205 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1206 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1207 |
|
1208 |
dc->props = virtio_blk_pci_properties; |
1209 |
k->init = virtio_blk_pci_init; |
1210 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1211 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; |
1212 |
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
1213 |
pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
1214 |
} |
1215 |
|
1216 |
static void virtio_blk_pci_instance_init(Object *obj) |
1217 |
{ |
1218 |
VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); |
1219 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK); |
1220 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1221 |
} |
1222 |
|
1223 |
static const TypeInfo virtio_blk_pci_info = { |
1224 |
.name = TYPE_VIRTIO_BLK_PCI, |
1225 |
.parent = TYPE_VIRTIO_PCI, |
1226 |
.instance_size = sizeof(VirtIOBlkPCI),
|
1227 |
.instance_init = virtio_blk_pci_instance_init, |
1228 |
.class_init = virtio_blk_pci_class_init, |
1229 |
}; |
1230 |
|
1231 |
/* virtio-scsi-pci */
|
1232 |
|
1233 |
static Property virtio_scsi_pci_properties[] = {
|
1234 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1235 |
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
1236 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
|
1237 |
DEV_NVECTORS_UNSPECIFIED), |
1238 |
DEFINE_VIRTIO_SCSI_FEATURES(VirtIOPCIProxy, host_features), |
1239 |
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIPCI, vdev.parent_obj.conf), |
1240 |
DEFINE_PROP_END_OF_LIST(), |
1241 |
}; |
1242 |
|
1243 |
static int virtio_scsi_pci_init_pci(VirtIOPCIProxy *vpci_dev) |
1244 |
{ |
1245 |
VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); |
1246 |
DeviceState *vdev = DEVICE(&dev->vdev); |
1247 |
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); |
1248 |
|
1249 |
if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
|
1250 |
vpci_dev->nvectors = vs->conf.num_queues + 3;
|
1251 |
} |
1252 |
|
1253 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1254 |
if (qdev_init(vdev) < 0) { |
1255 |
return -1; |
1256 |
} |
1257 |
return 0; |
1258 |
} |
1259 |
|
1260 |
static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) |
1261 |
{ |
1262 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1263 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1264 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1265 |
k->init = virtio_scsi_pci_init_pci; |
1266 |
dc->props = virtio_scsi_pci_properties; |
1267 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1268 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
1269 |
pcidev_k->revision = 0x00;
|
1270 |
pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
1271 |
} |
1272 |
|
1273 |
static void virtio_scsi_pci_instance_init(Object *obj) |
1274 |
{ |
1275 |
VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); |
1276 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI); |
1277 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1278 |
} |
1279 |
|
1280 |
static const TypeInfo virtio_scsi_pci_info = { |
1281 |
.name = TYPE_VIRTIO_SCSI_PCI, |
1282 |
.parent = TYPE_VIRTIO_PCI, |
1283 |
.instance_size = sizeof(VirtIOSCSIPCI),
|
1284 |
.instance_init = virtio_scsi_pci_instance_init, |
1285 |
.class_init = virtio_scsi_pci_class_init, |
1286 |
}; |
1287 |
|
1288 |
/* vhost-scsi-pci */
|
1289 |
|
1290 |
#ifdef CONFIG_VHOST_SCSI
|
1291 |
static Property vhost_scsi_pci_properties[] = {
|
1292 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
|
1293 |
DEV_NVECTORS_UNSPECIFIED), |
1294 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
1295 |
DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIPCI, vdev.parent_obj.conf), |
1296 |
DEFINE_PROP_END_OF_LIST(), |
1297 |
}; |
1298 |
|
1299 |
static int vhost_scsi_pci_init_pci(VirtIOPCIProxy *vpci_dev) |
1300 |
{ |
1301 |
VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev); |
1302 |
DeviceState *vdev = DEVICE(&dev->vdev); |
1303 |
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); |
1304 |
|
1305 |
if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
|
1306 |
vpci_dev->nvectors = vs->conf.num_queues + 3;
|
1307 |
} |
1308 |
|
1309 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1310 |
if (qdev_init(vdev) < 0) { |
1311 |
return -1; |
1312 |
} |
1313 |
return 0; |
1314 |
} |
1315 |
|
1316 |
static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data) |
1317 |
{ |
1318 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1319 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1320 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1321 |
k->init = vhost_scsi_pci_init_pci; |
1322 |
dc->props = vhost_scsi_pci_properties; |
1323 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1324 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
1325 |
pcidev_k->revision = 0x00;
|
1326 |
pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
1327 |
} |
1328 |
|
1329 |
static void vhost_scsi_pci_instance_init(Object *obj) |
1330 |
{ |
1331 |
VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj); |
1332 |
object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI); |
1333 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1334 |
} |
1335 |
|
1336 |
static const TypeInfo vhost_scsi_pci_info = { |
1337 |
.name = TYPE_VHOST_SCSI_PCI, |
1338 |
.parent = TYPE_VIRTIO_PCI, |
1339 |
.instance_size = sizeof(VHostSCSIPCI),
|
1340 |
.instance_init = vhost_scsi_pci_instance_init, |
1341 |
.class_init = vhost_scsi_pci_class_init, |
1342 |
}; |
1343 |
#endif
|
1344 |
|
1345 |
/* virtio-balloon-pci */
|
1346 |
|
1347 |
static void balloon_pci_stats_get_all(Object *obj, struct Visitor *v, |
1348 |
void *opaque, const char *name, |
1349 |
Error **errp) |
1350 |
{ |
1351 |
VirtIOBalloonPCI *dev = opaque; |
1352 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp);
|
1353 |
} |
1354 |
|
1355 |
static void balloon_pci_stats_get_poll_interval(Object *obj, struct Visitor *v, |
1356 |
void *opaque, const char *name, |
1357 |
Error **errp) |
1358 |
{ |
1359 |
VirtIOBalloonPCI *dev = opaque; |
1360 |
object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
1361 |
errp); |
1362 |
} |
1363 |
|
1364 |
static void balloon_pci_stats_set_poll_interval(Object *obj, struct Visitor *v, |
1365 |
void *opaque, const char *name, |
1366 |
Error **errp) |
1367 |
{ |
1368 |
VirtIOBalloonPCI *dev = opaque; |
1369 |
object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
1370 |
errp); |
1371 |
} |
1372 |
|
1373 |
static Property virtio_balloon_pci_properties[] = {
|
1374 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
1375 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
1376 |
DEFINE_PROP_END_OF_LIST(), |
1377 |
}; |
1378 |
|
1379 |
static int virtio_balloon_pci_init(VirtIOPCIProxy *vpci_dev) |
1380 |
{ |
1381 |
VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev); |
1382 |
DeviceState *vdev = DEVICE(&dev->vdev); |
1383 |
|
1384 |
if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
|
1385 |
vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
|
1386 |
vpci_dev->class_code = PCI_CLASS_OTHERS; |
1387 |
} |
1388 |
|
1389 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1390 |
if (qdev_init(vdev) < 0) { |
1391 |
return -1; |
1392 |
} |
1393 |
return 0; |
1394 |
} |
1395 |
|
1396 |
static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data) |
1397 |
{ |
1398 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1399 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1400 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1401 |
k->init = virtio_balloon_pci_init; |
1402 |
dc->props = virtio_balloon_pci_properties; |
1403 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1404 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; |
1405 |
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
1406 |
pcidev_k->class_id = PCI_CLASS_OTHERS; |
1407 |
} |
1408 |
|
1409 |
static void virtio_balloon_pci_instance_init(Object *obj) |
1410 |
{ |
1411 |
VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj); |
1412 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BALLOON); |
1413 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1414 |
|
1415 |
object_property_add(obj, "guest-stats", "guest statistics", |
1416 |
balloon_pci_stats_get_all, NULL, NULL, dev, |
1417 |
NULL);
|
1418 |
|
1419 |
object_property_add(obj, "guest-stats-polling-interval", "int", |
1420 |
balloon_pci_stats_get_poll_interval, |
1421 |
balloon_pci_stats_set_poll_interval, |
1422 |
NULL, dev, NULL); |
1423 |
} |
1424 |
|
1425 |
static const TypeInfo virtio_balloon_pci_info = { |
1426 |
.name = TYPE_VIRTIO_BALLOON_PCI, |
1427 |
.parent = TYPE_VIRTIO_PCI, |
1428 |
.instance_size = sizeof(VirtIOBalloonPCI),
|
1429 |
.instance_init = virtio_balloon_pci_instance_init, |
1430 |
.class_init = virtio_balloon_pci_class_init, |
1431 |
}; |
1432 |
|
1433 |
/* virtio-serial-pci */
|
1434 |
|
1435 |
static int virtio_serial_pci_init(VirtIOPCIProxy *vpci_dev) |
1436 |
{ |
1437 |
VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev); |
1438 |
DeviceState *vdev = DEVICE(&dev->vdev); |
1439 |
|
1440 |
if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
|
1441 |
vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
|
1442 |
vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */
|
1443 |
vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER; |
1444 |
} |
1445 |
|
1446 |
/* backwards-compatibility with machines that were created with
|
1447 |
DEV_NVECTORS_UNSPECIFIED */
|
1448 |
if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
|
1449 |
vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1;
|
1450 |
} |
1451 |
|
1452 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1453 |
if (qdev_init(vdev) < 0) { |
1454 |
return -1; |
1455 |
} |
1456 |
return 0; |
1457 |
} |
1458 |
|
1459 |
static Property virtio_serial_pci_properties[] = {
|
1460 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1461 |
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
1462 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
1463 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
1464 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
1465 |
DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialPCI, vdev.serial), |
1466 |
DEFINE_PROP_END_OF_LIST(), |
1467 |
}; |
1468 |
|
1469 |
static void virtio_serial_pci_class_init(ObjectClass *klass, void *data) |
1470 |
{ |
1471 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1472 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1473 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1474 |
k->init = virtio_serial_pci_init; |
1475 |
dc->props = virtio_serial_pci_properties; |
1476 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1477 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; |
1478 |
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
1479 |
pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER; |
1480 |
} |
1481 |
|
1482 |
static void virtio_serial_pci_instance_init(Object *obj) |
1483 |
{ |
1484 |
VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj); |
1485 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL); |
1486 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1487 |
} |
1488 |
|
1489 |
static const TypeInfo virtio_serial_pci_info = { |
1490 |
.name = TYPE_VIRTIO_SERIAL_PCI, |
1491 |
.parent = TYPE_VIRTIO_PCI, |
1492 |
.instance_size = sizeof(VirtIOSerialPCI),
|
1493 |
.instance_init = virtio_serial_pci_instance_init, |
1494 |
.class_init = virtio_serial_pci_class_init, |
1495 |
}; |
1496 |
|
1497 |
/* virtio-net-pci */
|
1498 |
|
1499 |
static Property virtio_net_properties[] = {
|
1500 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1501 |
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
|
1502 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), |
1503 |
DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), |
1504 |
DEFINE_NIC_PROPERTIES(VirtIONetPCI, vdev.nic_conf), |
1505 |
DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetPCI, vdev.net_conf), |
1506 |
DEFINE_PROP_END_OF_LIST(), |
1507 |
}; |
1508 |
|
1509 |
static int virtio_net_pci_init(VirtIOPCIProxy *vpci_dev) |
1510 |
{ |
1511 |
VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev); |
1512 |
DeviceState *vdev = DEVICE(&dev->vdev); |
1513 |
|
1514 |
virtio_net_set_config_size(&dev->vdev, vpci_dev->host_features); |
1515 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1516 |
if (qdev_init(vdev) < 0) { |
1517 |
return -1; |
1518 |
} |
1519 |
return 0; |
1520 |
} |
1521 |
|
1522 |
static void virtio_net_pci_class_init(ObjectClass *klass, void *data) |
1523 |
{ |
1524 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1525 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1526 |
VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass); |
1527 |
|
1528 |
k->romfile = "efi-virtio.rom";
|
1529 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1530 |
k->device_id = PCI_DEVICE_ID_VIRTIO_NET; |
1531 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
1532 |
k->class_id = PCI_CLASS_NETWORK_ETHERNET; |
1533 |
dc->props = virtio_net_properties; |
1534 |
vpciklass->init = virtio_net_pci_init; |
1535 |
} |
1536 |
|
1537 |
static void virtio_net_pci_instance_init(Object *obj) |
1538 |
{ |
1539 |
VirtIONetPCI *dev = VIRTIO_NET_PCI(obj); |
1540 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET); |
1541 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1542 |
} |
1543 |
|
1544 |
static const TypeInfo virtio_net_pci_info = { |
1545 |
.name = TYPE_VIRTIO_NET_PCI, |
1546 |
.parent = TYPE_VIRTIO_PCI, |
1547 |
.instance_size = sizeof(VirtIONetPCI),
|
1548 |
.instance_init = virtio_net_pci_instance_init, |
1549 |
.class_init = virtio_net_pci_class_init, |
1550 |
}; |
1551 |
|
1552 |
/* virtio-pci-bus */
|
1553 |
|
1554 |
void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
|
1555 |
{ |
1556 |
DeviceState *qdev = DEVICE(dev); |
1557 |
BusState *qbus; |
1558 |
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, NULL);
|
1559 |
qbus = BUS(bus); |
1560 |
qbus->allow_hotplug = 1;
|
1561 |
} |
1562 |
|
1563 |
static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) |
1564 |
{ |
1565 |
BusClass *bus_class = BUS_CLASS(klass); |
1566 |
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); |
1567 |
bus_class->max_dev = 1;
|
1568 |
k->notify = virtio_pci_notify; |
1569 |
k->save_config = virtio_pci_save_config; |
1570 |
k->load_config = virtio_pci_load_config; |
1571 |
k->save_queue = virtio_pci_save_queue; |
1572 |
k->load_queue = virtio_pci_load_queue; |
1573 |
k->get_features = virtio_pci_get_features; |
1574 |
k->query_guest_notifiers = virtio_pci_query_guest_notifiers; |
1575 |
k->set_host_notifier = virtio_pci_set_host_notifier; |
1576 |
k->set_guest_notifiers = virtio_pci_set_guest_notifiers; |
1577 |
k->vmstate_change = virtio_pci_vmstate_change; |
1578 |
k->device_plugged = virtio_pci_device_plugged; |
1579 |
} |
1580 |
|
1581 |
static const TypeInfo virtio_pci_bus_info = { |
1582 |
.name = TYPE_VIRTIO_PCI_BUS, |
1583 |
.parent = TYPE_VIRTIO_BUS, |
1584 |
.instance_size = sizeof(VirtioPCIBusState),
|
1585 |
.class_init = virtio_pci_bus_class_init, |
1586 |
}; |
1587 |
|
1588 |
static void virtio_pci_register_types(void) |
1589 |
{ |
1590 |
type_register_static(&virtio_rng_info); |
1591 |
type_register_static(&virtio_pci_bus_info); |
1592 |
type_register_static(&virtio_pci_info); |
1593 |
#ifdef CONFIG_VIRTFS
|
1594 |
type_register_static(&virtio_9p_info); |
1595 |
#endif
|
1596 |
type_register_static(&virtio_blk_pci_info); |
1597 |
type_register_static(&virtio_scsi_pci_info); |
1598 |
type_register_static(&virtio_balloon_pci_info); |
1599 |
type_register_static(&virtio_serial_pci_info); |
1600 |
type_register_static(&virtio_net_pci_info); |
1601 |
#ifdef CONFIG_VHOST_SCSI
|
1602 |
type_register_static(&vhost_scsi_pci_info); |
1603 |
#endif
|
1604 |
} |
1605 |
|
1606 |
type_init(virtio_pci_register_types) |