root / hw / virtio-pci.c @ 4b8f1c88
History | View | Annotate | Download (30.6 kB)
1 | 53c25cea | Paul Brook | /*
|
---|---|---|---|
2 | 53c25cea | Paul Brook | * Virtio PCI Bindings
|
3 | 53c25cea | Paul Brook | *
|
4 | 53c25cea | Paul Brook | * Copyright IBM, Corp. 2007
|
5 | 53c25cea | Paul Brook | * Copyright (c) 2009 CodeSourcery
|
6 | 53c25cea | Paul Brook | *
|
7 | 53c25cea | Paul Brook | * Authors:
|
8 | 53c25cea | Paul Brook | * Anthony Liguori <aliguori@us.ibm.com>
|
9 | 53c25cea | Paul Brook | * Paul Brook <paul@codesourcery.com>
|
10 | 53c25cea | Paul Brook | *
|
11 | 53c25cea | Paul Brook | * This work is licensed under the terms of the GNU GPL, version 2. See
|
12 | 53c25cea | Paul Brook | * the COPYING file in the top-level directory.
|
13 | 53c25cea | Paul Brook | *
|
14 | 6b620ca3 | Paolo Bonzini | * Contributions after 2012-01-13 are licensed under the terms of the
|
15 | 6b620ca3 | Paolo Bonzini | * GNU GPL, version 2 or (at your option) any later version.
|
16 | 53c25cea | Paul Brook | */
|
17 | 53c25cea | Paul Brook | |
18 | 53c25cea | Paul Brook | #include <inttypes.h> |
19 | 53c25cea | Paul Brook | |
20 | 53c25cea | Paul Brook | #include "virtio.h" |
21 | 8172539d | Michael S. Tsirkin | #include "virtio-blk.h" |
22 | 8172539d | Michael S. Tsirkin | #include "virtio-net.h" |
23 | 6b331efb | Amit Shah | #include "virtio-serial.h" |
24 | 973abc7f | Stefan Hajnoczi | #include "virtio-scsi.h" |
25 | 53c25cea | Paul Brook | #include "pci.h" |
26 | 2f792016 | Markus Armbruster | #include "qemu-error.h" |
27 | aba800a3 | Michael S. Tsirkin | #include "msix.h" |
28 | a1e0fea5 | Gerd Hoffmann | #include "net.h" |
29 | 97b15621 | Gerd Hoffmann | #include "loader.h" |
30 | ade80dc8 | Michael S. Tsirkin | #include "kvm.h" |
31 | 2446333c | Blue Swirl | #include "blockdev.h" |
32 | 9fe1ebeb | Aneesh Kumar K.V | #include "virtio-pci.h" |
33 | 1129714f | Michael S. Tsirkin | #include "range.h" |
34 | 53c25cea | Paul Brook | |
35 | 53c25cea | Paul Brook | /* from Linux's linux/virtio_pci.h */
|
36 | 53c25cea | Paul Brook | |
37 | 53c25cea | Paul Brook | /* A 32-bit r/o bitmask of the features supported by the host */
|
38 | 53c25cea | Paul Brook | #define VIRTIO_PCI_HOST_FEATURES 0 |
39 | 53c25cea | Paul Brook | |
40 | 53c25cea | Paul Brook | /* A 32-bit r/w bitmask of features activated by the guest */
|
41 | 53c25cea | Paul Brook | #define VIRTIO_PCI_GUEST_FEATURES 4 |
42 | 53c25cea | Paul Brook | |
43 | 53c25cea | Paul Brook | /* A 32-bit r/w PFN for the currently selected queue */
|
44 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_PFN 8 |
45 | 53c25cea | Paul Brook | |
46 | 53c25cea | Paul Brook | /* A 16-bit r/o queue size for the currently selected queue */
|
47 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_NUM 12 |
48 | 53c25cea | Paul Brook | |
49 | 53c25cea | Paul Brook | /* A 16-bit r/w queue selector */
|
50 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_SEL 14 |
51 | 53c25cea | Paul Brook | |
52 | 53c25cea | Paul Brook | /* A 16-bit r/w queue notifier */
|
53 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_NOTIFY 16 |
54 | 53c25cea | Paul Brook | |
55 | 53c25cea | Paul Brook | /* An 8-bit device status register. */
|
56 | 53c25cea | Paul Brook | #define VIRTIO_PCI_STATUS 18 |
57 | 53c25cea | Paul Brook | |
58 | 53c25cea | Paul Brook | /* An 8-bit r/o interrupt status register. Reading the value will return the
|
59 | 53c25cea | Paul Brook | * current contents of the ISR and will also clear it. This is effectively
|
60 | 53c25cea | Paul Brook | * a read-and-acknowledge. */
|
61 | 53c25cea | Paul Brook | #define VIRTIO_PCI_ISR 19 |
62 | 53c25cea | Paul Brook | |
63 | aba800a3 | Michael S. Tsirkin | /* MSI-X registers: only enabled if MSI-X is enabled. */
|
64 | aba800a3 | Michael S. Tsirkin | /* A 16-bit vector for configuration changes. */
|
65 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_MSI_CONFIG_VECTOR 20 |
66 | aba800a3 | Michael S. Tsirkin | /* A 16-bit vector for selected queue notifications. */
|
67 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_MSI_QUEUE_VECTOR 22 |
68 | aba800a3 | Michael S. Tsirkin | |
69 | aba800a3 | Michael S. Tsirkin | /* Config space size */
|
70 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_CONFIG_NOMSI 20 |
71 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_CONFIG_MSI 24 |
72 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \
|
73 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_MSI : \ |
74 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_NOMSI) |
75 | aba800a3 | Michael S. Tsirkin | |
76 | aba800a3 | Michael S. Tsirkin | /* The remaining space is defined by each driver as the per-driver
|
77 | aba800a3 | Michael S. Tsirkin | * configuration space */
|
78 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \
|
79 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_MSI : \ |
80 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_NOMSI) |
81 | 53c25cea | Paul Brook | |
82 | 53c25cea | Paul Brook | /* How many bits to shift physical queue address written to QUEUE_PFN.
|
83 | 53c25cea | Paul Brook | * 12 is historical, and due to x86 page size. */
|
84 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 |
85 | 53c25cea | Paul Brook | |
86 | 3dbca8e6 | Stefan Hajnoczi | /* Flags track per-device state like workarounds for quirks in older guests. */
|
87 | 3dbca8e6 | Stefan Hajnoczi | #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) |
88 | c81131db | Alexander Graf | |
89 | 53c25cea | Paul Brook | /* QEMU doesn't strictly need write barriers since everything runs in
|
90 | 53c25cea | Paul Brook | * lock-step. We'll leave the calls to wmb() in though to make it obvious for
|
91 | 53c25cea | Paul Brook | * KVM or if kqemu gets SMP support.
|
92 | 53c25cea | Paul Brook | */
|
93 | 53c25cea | Paul Brook | #define wmb() do { } while (0) |
94 | 53c25cea | Paul Brook | |
95 | 82afa586 | Benjamin Herrenschmidt | /* HACK for virtio to determine if it's running a big endian guest */
|
96 | 82afa586 | Benjamin Herrenschmidt | bool virtio_is_big_endian(void); |
97 | 82afa586 | Benjamin Herrenschmidt | |
98 | 53c25cea | Paul Brook | /* virtio device */
|
99 | 53c25cea | Paul Brook | |
100 | 7055e687 | Michael S. Tsirkin | static void virtio_pci_notify(void *opaque, uint16_t vector) |
101 | 53c25cea | Paul Brook | { |
102 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
103 | aba800a3 | Michael S. Tsirkin | if (msix_enabled(&proxy->pci_dev))
|
104 | aba800a3 | Michael S. Tsirkin | msix_notify(&proxy->pci_dev, vector); |
105 | aba800a3 | Michael S. Tsirkin | else
|
106 | aba800a3 | Michael S. Tsirkin | qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); |
107 | 53c25cea | Paul Brook | } |
108 | 53c25cea | Paul Brook | |
109 | ff24bd58 | Michael S. Tsirkin | static void virtio_pci_save_config(void * opaque, QEMUFile *f) |
110 | ff24bd58 | Michael S. Tsirkin | { |
111 | ff24bd58 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
112 | ff24bd58 | Michael S. Tsirkin | pci_device_save(&proxy->pci_dev, f); |
113 | ff24bd58 | Michael S. Tsirkin | msix_save(&proxy->pci_dev, f); |
114 | ff24bd58 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev))
|
115 | ff24bd58 | Michael S. Tsirkin | qemu_put_be16(f, proxy->vdev->config_vector); |
116 | ff24bd58 | Michael S. Tsirkin | } |
117 | ff24bd58 | Michael S. Tsirkin | |
118 | ff24bd58 | Michael S. Tsirkin | static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f) |
119 | ff24bd58 | Michael S. Tsirkin | { |
120 | ff24bd58 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
121 | ff24bd58 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev))
|
122 | ff24bd58 | Michael S. Tsirkin | qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); |
123 | ff24bd58 | Michael S. Tsirkin | } |
124 | ff24bd58 | Michael S. Tsirkin | |
125 | ff24bd58 | Michael S. Tsirkin | static int virtio_pci_load_config(void * opaque, QEMUFile *f) |
126 | ff24bd58 | Michael S. Tsirkin | { |
127 | ff24bd58 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
128 | ff24bd58 | Michael S. Tsirkin | int ret;
|
129 | ff24bd58 | Michael S. Tsirkin | ret = pci_device_load(&proxy->pci_dev, f); |
130 | e6da7680 | Michael S. Tsirkin | if (ret) {
|
131 | ff24bd58 | Michael S. Tsirkin | return ret;
|
132 | e6da7680 | Michael S. Tsirkin | } |
133 | ff24bd58 | Michael S. Tsirkin | msix_load(&proxy->pci_dev, f); |
134 | e6da7680 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev)) {
|
135 | ff24bd58 | Michael S. Tsirkin | qemu_get_be16s(f, &proxy->vdev->config_vector); |
136 | e6da7680 | Michael S. Tsirkin | } else {
|
137 | e6da7680 | Michael S. Tsirkin | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; |
138 | e6da7680 | Michael S. Tsirkin | } |
139 | e6da7680 | Michael S. Tsirkin | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
|
140 | e6da7680 | Michael S. Tsirkin | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
|
141 | e6da7680 | Michael S. Tsirkin | } |
142 | ff24bd58 | Michael S. Tsirkin | return 0; |
143 | ff24bd58 | Michael S. Tsirkin | } |
144 | ff24bd58 | Michael S. Tsirkin | |
145 | ff24bd58 | Michael S. Tsirkin | static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) |
146 | ff24bd58 | Michael S. Tsirkin | { |
147 | ff24bd58 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
148 | ff24bd58 | Michael S. Tsirkin | uint16_t vector; |
149 | e6da7680 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev)) {
|
150 | e6da7680 | Michael S. Tsirkin | qemu_get_be16s(f, &vector); |
151 | e6da7680 | Michael S. Tsirkin | } else {
|
152 | e6da7680 | Michael S. Tsirkin | vector = VIRTIO_NO_VECTOR; |
153 | e6da7680 | Michael S. Tsirkin | } |
154 | ff24bd58 | Michael S. Tsirkin | virtio_queue_set_vector(proxy->vdev, n, vector); |
155 | e6da7680 | Michael S. Tsirkin | if (vector != VIRTIO_NO_VECTOR) {
|
156 | e6da7680 | Michael S. Tsirkin | return msix_vector_use(&proxy->pci_dev, vector);
|
157 | e6da7680 | Michael S. Tsirkin | } |
158 | ff24bd58 | Michael S. Tsirkin | return 0; |
159 | ff24bd58 | Michael S. Tsirkin | } |
160 | ff24bd58 | Michael S. Tsirkin | |
161 | 25db9ebe | Stefan Hajnoczi | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
162 | 25db9ebe | Stefan Hajnoczi | int n, bool assign) |
163 | 25db9ebe | Stefan Hajnoczi | { |
164 | 25db9ebe | Stefan Hajnoczi | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
165 | 25db9ebe | Stefan Hajnoczi | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); |
166 | da146d0a | Avi Kivity | int r = 0; |
167 | da146d0a | Avi Kivity | |
168 | 25db9ebe | Stefan Hajnoczi | if (assign) {
|
169 | 25db9ebe | Stefan Hajnoczi | r = event_notifier_init(notifier, 1);
|
170 | 25db9ebe | Stefan Hajnoczi | if (r < 0) { |
171 | b36e3914 | Michael S. Tsirkin | error_report("%s: unable to init event notifier: %d",
|
172 | b36e3914 | Michael S. Tsirkin | __func__, r); |
173 | 25db9ebe | Stefan Hajnoczi | return r;
|
174 | 25db9ebe | Stefan Hajnoczi | } |
175 | da146d0a | Avi Kivity | memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
|
176 | da146d0a | Avi Kivity | true, n, event_notifier_get_fd(notifier));
|
177 | 25db9ebe | Stefan Hajnoczi | } else {
|
178 | da146d0a | Avi Kivity | memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
|
179 | da146d0a | Avi Kivity | true, n, event_notifier_get_fd(notifier));
|
180 | 25db9ebe | Stefan Hajnoczi | /* Handle the race condition where the guest kicked and we deassigned
|
181 | 25db9ebe | Stefan Hajnoczi | * before we got around to handling the kick.
|
182 | 25db9ebe | Stefan Hajnoczi | */
|
183 | 25db9ebe | Stefan Hajnoczi | if (event_notifier_test_and_clear(notifier)) {
|
184 | 25db9ebe | Stefan Hajnoczi | virtio_queue_notify_vq(vq); |
185 | 25db9ebe | Stefan Hajnoczi | } |
186 | 25db9ebe | Stefan Hajnoczi | |
187 | 25db9ebe | Stefan Hajnoczi | event_notifier_cleanup(notifier); |
188 | 25db9ebe | Stefan Hajnoczi | } |
189 | 25db9ebe | Stefan Hajnoczi | return r;
|
190 | 25db9ebe | Stefan Hajnoczi | } |
191 | 25db9ebe | Stefan Hajnoczi | |
192 | 25db9ebe | Stefan Hajnoczi | static void virtio_pci_host_notifier_read(void *opaque) |
193 | 25db9ebe | Stefan Hajnoczi | { |
194 | 25db9ebe | Stefan Hajnoczi | VirtQueue *vq = opaque; |
195 | 25db9ebe | Stefan Hajnoczi | EventNotifier *n = virtio_queue_get_host_notifier(vq); |
196 | 25db9ebe | Stefan Hajnoczi | if (event_notifier_test_and_clear(n)) {
|
197 | 25db9ebe | Stefan Hajnoczi | virtio_queue_notify_vq(vq); |
198 | 25db9ebe | Stefan Hajnoczi | } |
199 | 25db9ebe | Stefan Hajnoczi | } |
200 | 25db9ebe | Stefan Hajnoczi | |
201 | 25db9ebe | Stefan Hajnoczi | static void virtio_pci_set_host_notifier_fd_handler(VirtIOPCIProxy *proxy, |
202 | 25db9ebe | Stefan Hajnoczi | int n, bool assign) |
203 | 25db9ebe | Stefan Hajnoczi | { |
204 | 25db9ebe | Stefan Hajnoczi | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
205 | 25db9ebe | Stefan Hajnoczi | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); |
206 | 25db9ebe | Stefan Hajnoczi | if (assign) {
|
207 | 25db9ebe | Stefan Hajnoczi | qemu_set_fd_handler(event_notifier_get_fd(notifier), |
208 | 25db9ebe | Stefan Hajnoczi | virtio_pci_host_notifier_read, NULL, vq);
|
209 | 25db9ebe | Stefan Hajnoczi | } else {
|
210 | 25db9ebe | Stefan Hajnoczi | qemu_set_fd_handler(event_notifier_get_fd(notifier), |
211 | 25db9ebe | Stefan Hajnoczi | NULL, NULL, NULL); |
212 | 25db9ebe | Stefan Hajnoczi | } |
213 | 25db9ebe | Stefan Hajnoczi | } |
214 | 25db9ebe | Stefan Hajnoczi | |
215 | b36e3914 | Michael S. Tsirkin | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
216 | 25db9ebe | Stefan Hajnoczi | { |
217 | 25db9ebe | Stefan Hajnoczi | int n, r;
|
218 | 25db9ebe | Stefan Hajnoczi | |
219 | 25db9ebe | Stefan Hajnoczi | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) ||
|
220 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_disabled || |
221 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started) { |
222 | b36e3914 | Michael S. Tsirkin | return;
|
223 | 25db9ebe | Stefan Hajnoczi | } |
224 | 25db9ebe | Stefan Hajnoczi | |
225 | 25db9ebe | Stefan Hajnoczi | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
226 | 25db9ebe | Stefan Hajnoczi | if (!virtio_queue_get_num(proxy->vdev, n)) {
|
227 | 25db9ebe | Stefan Hajnoczi | continue;
|
228 | 25db9ebe | Stefan Hajnoczi | } |
229 | 25db9ebe | Stefan Hajnoczi | |
230 | 25db9ebe | Stefan Hajnoczi | r = virtio_pci_set_host_notifier_internal(proxy, n, true);
|
231 | 25db9ebe | Stefan Hajnoczi | if (r < 0) { |
232 | 25db9ebe | Stefan Hajnoczi | goto assign_error;
|
233 | 25db9ebe | Stefan Hajnoczi | } |
234 | 25db9ebe | Stefan Hajnoczi | |
235 | 25db9ebe | Stefan Hajnoczi | virtio_pci_set_host_notifier_fd_handler(proxy, n, true);
|
236 | 25db9ebe | Stefan Hajnoczi | } |
237 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started = true;
|
238 | b36e3914 | Michael S. Tsirkin | return;
|
239 | 25db9ebe | Stefan Hajnoczi | |
240 | 25db9ebe | Stefan Hajnoczi | assign_error:
|
241 | 25db9ebe | Stefan Hajnoczi | while (--n >= 0) { |
242 | 25db9ebe | Stefan Hajnoczi | if (!virtio_queue_get_num(proxy->vdev, n)) {
|
243 | 25db9ebe | Stefan Hajnoczi | continue;
|
244 | 25db9ebe | Stefan Hajnoczi | } |
245 | 25db9ebe | Stefan Hajnoczi | |
246 | 25db9ebe | Stefan Hajnoczi | virtio_pci_set_host_notifier_fd_handler(proxy, n, false);
|
247 | b36e3914 | Michael S. Tsirkin | r = virtio_pci_set_host_notifier_internal(proxy, n, false);
|
248 | b36e3914 | Michael S. Tsirkin | assert(r >= 0);
|
249 | 25db9ebe | Stefan Hajnoczi | } |
250 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started = false;
|
251 | b36e3914 | Michael S. Tsirkin | error_report("%s: failed. Fallback to a userspace (slower).", __func__);
|
252 | 25db9ebe | Stefan Hajnoczi | } |
253 | 25db9ebe | Stefan Hajnoczi | |
254 | b36e3914 | Michael S. Tsirkin | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
255 | 25db9ebe | Stefan Hajnoczi | { |
256 | b36e3914 | Michael S. Tsirkin | int r;
|
257 | 25db9ebe | Stefan Hajnoczi | int n;
|
258 | 25db9ebe | Stefan Hajnoczi | |
259 | 25db9ebe | Stefan Hajnoczi | if (!proxy->ioeventfd_started) {
|
260 | b36e3914 | Michael S. Tsirkin | return;
|
261 | 25db9ebe | Stefan Hajnoczi | } |
262 | 25db9ebe | Stefan Hajnoczi | |
263 | 25db9ebe | Stefan Hajnoczi | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
264 | 25db9ebe | Stefan Hajnoczi | if (!virtio_queue_get_num(proxy->vdev, n)) {
|
265 | 25db9ebe | Stefan Hajnoczi | continue;
|
266 | 25db9ebe | Stefan Hajnoczi | } |
267 | 25db9ebe | Stefan Hajnoczi | |
268 | 25db9ebe | Stefan Hajnoczi | virtio_pci_set_host_notifier_fd_handler(proxy, n, false);
|
269 | b36e3914 | Michael S. Tsirkin | r = virtio_pci_set_host_notifier_internal(proxy, n, false);
|
270 | b36e3914 | Michael S. Tsirkin | assert(r >= 0);
|
271 | 25db9ebe | Stefan Hajnoczi | } |
272 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started = false;
|
273 | 25db9ebe | Stefan Hajnoczi | } |
274 | 25db9ebe | Stefan Hajnoczi | |
275 | 8798d6c9 | Aneesh Kumar K.V | void virtio_pci_reset(DeviceState *d)
|
276 | 7055e687 | Michael S. Tsirkin | { |
277 | e489030d | Michael S. Tsirkin | VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
278 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
279 | 7055e687 | Michael S. Tsirkin | virtio_reset(proxy->vdev); |
280 | aba800a3 | Michael S. Tsirkin | msix_reset(&proxy->pci_dev); |
281 | 25db9ebe | Stefan Hajnoczi | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
282 | 7055e687 | Michael S. Tsirkin | } |
283 | 7055e687 | Michael S. Tsirkin | |
284 | 53c25cea | Paul Brook | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
285 | 53c25cea | Paul Brook | { |
286 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
287 | 53c25cea | Paul Brook | VirtIODevice *vdev = proxy->vdev; |
288 | c227f099 | Anthony Liguori | target_phys_addr_t pa; |
289 | 53c25cea | Paul Brook | |
290 | 53c25cea | Paul Brook | switch (addr) {
|
291 | 53c25cea | Paul Brook | case VIRTIO_PCI_GUEST_FEATURES:
|
292 | 53c25cea | Paul Brook | /* Guest does not negotiate properly? We have to assume nothing. */
|
293 | 53c25cea | Paul Brook | if (val & (1 << VIRTIO_F_BAD_FEATURE)) { |
294 | ad0c9332 | Paolo Bonzini | val = vdev->bad_features ? vdev->bad_features(vdev) : 0;
|
295 | 53c25cea | Paul Brook | } |
296 | ad0c9332 | Paolo Bonzini | virtio_set_features(vdev, val); |
297 | 53c25cea | Paul Brook | break;
|
298 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_PFN:
|
299 | c227f099 | Anthony Liguori | pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
300 | 1b8e9b27 | Michael S. Tsirkin | if (pa == 0) { |
301 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
302 | 1b8e9b27 | Michael S. Tsirkin | virtio_reset(proxy->vdev); |
303 | 1b8e9b27 | Michael S. Tsirkin | msix_unuse_all_vectors(&proxy->pci_dev); |
304 | 1b8e9b27 | Michael S. Tsirkin | } |
305 | 7055e687 | Michael S. Tsirkin | else
|
306 | 7055e687 | Michael S. Tsirkin | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); |
307 | 53c25cea | Paul Brook | break;
|
308 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_SEL:
|
309 | 53c25cea | Paul Brook | if (val < VIRTIO_PCI_QUEUE_MAX)
|
310 | 53c25cea | Paul Brook | vdev->queue_sel = val; |
311 | 53c25cea | Paul Brook | break;
|
312 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_NOTIFY:
|
313 | 7157e2e2 | Stefan Hajnoczi | if (val < VIRTIO_PCI_QUEUE_MAX) {
|
314 | 7157e2e2 | Stefan Hajnoczi | virtio_queue_notify(vdev, val); |
315 | 7157e2e2 | Stefan Hajnoczi | } |
316 | 53c25cea | Paul Brook | break;
|
317 | 53c25cea | Paul Brook | case VIRTIO_PCI_STATUS:
|
318 | 25db9ebe | Stefan Hajnoczi | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
319 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
320 | 25db9ebe | Stefan Hajnoczi | } |
321 | 25db9ebe | Stefan Hajnoczi | |
322 | 3e607cb5 | Michael S. Tsirkin | virtio_set_status(vdev, val & 0xFF);
|
323 | 25db9ebe | Stefan Hajnoczi | |
324 | 25db9ebe | Stefan Hajnoczi | if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
|
325 | 25db9ebe | Stefan Hajnoczi | virtio_pci_start_ioeventfd(proxy); |
326 | 25db9ebe | Stefan Hajnoczi | } |
327 | 25db9ebe | Stefan Hajnoczi | |
328 | 1b8e9b27 | Michael S. Tsirkin | if (vdev->status == 0) { |
329 | 1b8e9b27 | Michael S. Tsirkin | virtio_reset(proxy->vdev); |
330 | 1b8e9b27 | Michael S. Tsirkin | msix_unuse_all_vectors(&proxy->pci_dev); |
331 | 1b8e9b27 | Michael S. Tsirkin | } |
332 | c81131db | Alexander Graf | |
333 | c81131db | Alexander Graf | /* Linux before 2.6.34 sets the device as OK without enabling
|
334 | c81131db | Alexander Graf | the PCI device bus master bit. In this case we need to disable
|
335 | c81131db | Alexander Graf | some safety checks. */
|
336 | c81131db | Alexander Graf | if ((val & VIRTIO_CONFIG_S_DRIVER_OK) &&
|
337 | c81131db | Alexander Graf | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
338 | 3dbca8e6 | Stefan Hajnoczi | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
339 | c81131db | Alexander Graf | } |
340 | 53c25cea | Paul Brook | break;
|
341 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_CONFIG_VECTOR:
|
342 | aba800a3 | Michael S. Tsirkin | msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); |
343 | aba800a3 | Michael S. Tsirkin | /* Make it possible for guest to discover an error took place. */
|
344 | aba800a3 | Michael S. Tsirkin | if (msix_vector_use(&proxy->pci_dev, val) < 0) |
345 | aba800a3 | Michael S. Tsirkin | val = VIRTIO_NO_VECTOR; |
346 | aba800a3 | Michael S. Tsirkin | vdev->config_vector = val; |
347 | aba800a3 | Michael S. Tsirkin | break;
|
348 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_QUEUE_VECTOR:
|
349 | aba800a3 | Michael S. Tsirkin | msix_vector_unuse(&proxy->pci_dev, |
350 | aba800a3 | Michael S. Tsirkin | virtio_queue_vector(vdev, vdev->queue_sel)); |
351 | aba800a3 | Michael S. Tsirkin | /* Make it possible for guest to discover an error took place. */
|
352 | aba800a3 | Michael S. Tsirkin | if (msix_vector_use(&proxy->pci_dev, val) < 0) |
353 | aba800a3 | Michael S. Tsirkin | val = VIRTIO_NO_VECTOR; |
354 | aba800a3 | Michael S. Tsirkin | virtio_queue_set_vector(vdev, vdev->queue_sel, val); |
355 | aba800a3 | Michael S. Tsirkin | break;
|
356 | aba800a3 | Michael S. Tsirkin | default:
|
357 | 4e02d460 | Stefan Hajnoczi | error_report("%s: unexpected address 0x%x value 0x%x",
|
358 | 4e02d460 | Stefan Hajnoczi | __func__, addr, val); |
359 | aba800a3 | Michael S. Tsirkin | break;
|
360 | 53c25cea | Paul Brook | } |
361 | 53c25cea | Paul Brook | } |
362 | 53c25cea | Paul Brook | |
363 | aba800a3 | Michael S. Tsirkin | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
|
364 | 53c25cea | Paul Brook | { |
365 | 53c25cea | Paul Brook | VirtIODevice *vdev = proxy->vdev; |
366 | 53c25cea | Paul Brook | uint32_t ret = 0xFFFFFFFF;
|
367 | 53c25cea | Paul Brook | |
368 | 53c25cea | Paul Brook | switch (addr) {
|
369 | 53c25cea | Paul Brook | case VIRTIO_PCI_HOST_FEATURES:
|
370 | 8172539d | Michael S. Tsirkin | ret = proxy->host_features; |
371 | 53c25cea | Paul Brook | break;
|
372 | 53c25cea | Paul Brook | case VIRTIO_PCI_GUEST_FEATURES:
|
373 | 704a76fc | Michael S. Tsirkin | ret = vdev->guest_features; |
374 | 53c25cea | Paul Brook | break;
|
375 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_PFN:
|
376 | 53c25cea | Paul Brook | ret = virtio_queue_get_addr(vdev, vdev->queue_sel) |
377 | 53c25cea | Paul Brook | >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
378 | 53c25cea | Paul Brook | break;
|
379 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_NUM:
|
380 | 53c25cea | Paul Brook | ret = virtio_queue_get_num(vdev, vdev->queue_sel); |
381 | 53c25cea | Paul Brook | break;
|
382 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_SEL:
|
383 | 53c25cea | Paul Brook | ret = vdev->queue_sel; |
384 | 53c25cea | Paul Brook | break;
|
385 | 53c25cea | Paul Brook | case VIRTIO_PCI_STATUS:
|
386 | 53c25cea | Paul Brook | ret = vdev->status; |
387 | 53c25cea | Paul Brook | break;
|
388 | 53c25cea | Paul Brook | case VIRTIO_PCI_ISR:
|
389 | 53c25cea | Paul Brook | /* reading from the ISR also clears it. */
|
390 | 53c25cea | Paul Brook | ret = vdev->isr; |
391 | 53c25cea | Paul Brook | vdev->isr = 0;
|
392 | 7055e687 | Michael S. Tsirkin | qemu_set_irq(proxy->pci_dev.irq[0], 0); |
393 | 53c25cea | Paul Brook | break;
|
394 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_CONFIG_VECTOR:
|
395 | aba800a3 | Michael S. Tsirkin | ret = vdev->config_vector; |
396 | aba800a3 | Michael S. Tsirkin | break;
|
397 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_QUEUE_VECTOR:
|
398 | aba800a3 | Michael S. Tsirkin | ret = virtio_queue_vector(vdev, vdev->queue_sel); |
399 | aba800a3 | Michael S. Tsirkin | break;
|
400 | 53c25cea | Paul Brook | default:
|
401 | 53c25cea | Paul Brook | break;
|
402 | 53c25cea | Paul Brook | } |
403 | 53c25cea | Paul Brook | |
404 | 53c25cea | Paul Brook | return ret;
|
405 | 53c25cea | Paul Brook | } |
406 | 53c25cea | Paul Brook | |
407 | 53c25cea | Paul Brook | static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr) |
408 | 53c25cea | Paul Brook | { |
409 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
410 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
411 | aba800a3 | Michael S. Tsirkin | if (addr < config)
|
412 | aba800a3 | Michael S. Tsirkin | return virtio_ioport_read(proxy, addr);
|
413 | aba800a3 | Michael S. Tsirkin | addr -= config; |
414 | 53c25cea | Paul Brook | return virtio_config_readb(proxy->vdev, addr);
|
415 | 53c25cea | Paul Brook | } |
416 | 53c25cea | Paul Brook | |
417 | 53c25cea | Paul Brook | static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr) |
418 | 53c25cea | Paul Brook | { |
419 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
420 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
421 | 82afa586 | Benjamin Herrenschmidt | uint16_t val; |
422 | aba800a3 | Michael S. Tsirkin | if (addr < config)
|
423 | aba800a3 | Michael S. Tsirkin | return virtio_ioport_read(proxy, addr);
|
424 | aba800a3 | Michael S. Tsirkin | addr -= config; |
425 | 82afa586 | Benjamin Herrenschmidt | val = virtio_config_readw(proxy->vdev, addr); |
426 | 82afa586 | Benjamin Herrenschmidt | if (virtio_is_big_endian()) {
|
427 | 82afa586 | Benjamin Herrenschmidt | /*
|
428 | 82afa586 | Benjamin Herrenschmidt | * virtio is odd, ioports are LE but config space is target native
|
429 | 82afa586 | Benjamin Herrenschmidt | * endian. However, in qemu, all PIO is LE, so we need to re-swap
|
430 | 82afa586 | Benjamin Herrenschmidt | * on BE targets
|
431 | 82afa586 | Benjamin Herrenschmidt | */
|
432 | 82afa586 | Benjamin Herrenschmidt | val = bswap16(val); |
433 | 82afa586 | Benjamin Herrenschmidt | } |
434 | 82afa586 | Benjamin Herrenschmidt | return val;
|
435 | 53c25cea | Paul Brook | } |
436 | 53c25cea | Paul Brook | |
437 | 53c25cea | Paul Brook | static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) |
438 | 53c25cea | Paul Brook | { |
439 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
440 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
441 | 82afa586 | Benjamin Herrenschmidt | uint32_t val; |
442 | aba800a3 | Michael S. Tsirkin | if (addr < config)
|
443 | aba800a3 | Michael S. Tsirkin | return virtio_ioport_read(proxy, addr);
|
444 | aba800a3 | Michael S. Tsirkin | addr -= config; |
445 | 82afa586 | Benjamin Herrenschmidt | val = virtio_config_readl(proxy->vdev, addr); |
446 | 82afa586 | Benjamin Herrenschmidt | if (virtio_is_big_endian()) {
|
447 | 82afa586 | Benjamin Herrenschmidt | val = bswap32(val); |
448 | 82afa586 | Benjamin Herrenschmidt | } |
449 | 82afa586 | Benjamin Herrenschmidt | return val;
|
450 | 53c25cea | Paul Brook | } |
451 | 53c25cea | Paul Brook | |
452 | 53c25cea | Paul Brook | static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) |
453 | 53c25cea | Paul Brook | { |
454 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
455 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
456 | aba800a3 | Michael S. Tsirkin | if (addr < config) {
|
457 | aba800a3 | Michael S. Tsirkin | virtio_ioport_write(proxy, addr, val); |
458 | aba800a3 | Michael S. Tsirkin | return;
|
459 | aba800a3 | Michael S. Tsirkin | } |
460 | aba800a3 | Michael S. Tsirkin | addr -= config; |
461 | 53c25cea | Paul Brook | virtio_config_writeb(proxy->vdev, addr, val); |
462 | 53c25cea | Paul Brook | } |
463 | 53c25cea | Paul Brook | |
464 | 53c25cea | Paul Brook | static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val) |
465 | 53c25cea | Paul Brook | { |
466 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
467 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
468 | aba800a3 | Michael S. Tsirkin | if (addr < config) {
|
469 | aba800a3 | Michael S. Tsirkin | virtio_ioport_write(proxy, addr, val); |
470 | aba800a3 | Michael S. Tsirkin | return;
|
471 | aba800a3 | Michael S. Tsirkin | } |
472 | aba800a3 | Michael S. Tsirkin | addr -= config; |
473 | 82afa586 | Benjamin Herrenschmidt | if (virtio_is_big_endian()) {
|
474 | 82afa586 | Benjamin Herrenschmidt | val = bswap16(val); |
475 | 82afa586 | Benjamin Herrenschmidt | } |
476 | 53c25cea | Paul Brook | virtio_config_writew(proxy->vdev, addr, val); |
477 | 53c25cea | Paul Brook | } |
478 | 53c25cea | Paul Brook | |
479 | 53c25cea | Paul Brook | static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val) |
480 | 53c25cea | Paul Brook | { |
481 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
482 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
483 | aba800a3 | Michael S. Tsirkin | if (addr < config) {
|
484 | aba800a3 | Michael S. Tsirkin | virtio_ioport_write(proxy, addr, val); |
485 | aba800a3 | Michael S. Tsirkin | return;
|
486 | aba800a3 | Michael S. Tsirkin | } |
487 | aba800a3 | Michael S. Tsirkin | addr -= config; |
488 | 82afa586 | Benjamin Herrenschmidt | if (virtio_is_big_endian()) {
|
489 | 82afa586 | Benjamin Herrenschmidt | val = bswap32(val); |
490 | 82afa586 | Benjamin Herrenschmidt | } |
491 | 53c25cea | Paul Brook | virtio_config_writel(proxy->vdev, addr, val); |
492 | 53c25cea | Paul Brook | } |
493 | 53c25cea | Paul Brook | |
494 | da146d0a | Avi Kivity | const MemoryRegionPortio virtio_portio[] = {
|
495 | da146d0a | Avi Kivity | { 0, 0x10000, 1, .write = virtio_pci_config_writeb, }, |
496 | da146d0a | Avi Kivity | { 0, 0x10000, 2, .write = virtio_pci_config_writew, }, |
497 | da146d0a | Avi Kivity | { 0, 0x10000, 4, .write = virtio_pci_config_writel, }, |
498 | da146d0a | Avi Kivity | { 0, 0x10000, 1, .read = virtio_pci_config_readb, }, |
499 | da146d0a | Avi Kivity | { 0, 0x10000, 2, .read = virtio_pci_config_readw, }, |
500 | da146d0a | Avi Kivity | { 0, 0x10000, 4, .read = virtio_pci_config_readl, }, |
501 | da146d0a | Avi Kivity | PORTIO_END_OF_LIST() |
502 | da146d0a | Avi Kivity | }; |
503 | 53c25cea | Paul Brook | |
504 | da146d0a | Avi Kivity | static const MemoryRegionOps virtio_pci_config_ops = { |
505 | da146d0a | Avi Kivity | .old_portio = virtio_portio, |
506 | da146d0a | Avi Kivity | .endianness = DEVICE_LITTLE_ENDIAN, |
507 | da146d0a | Avi Kivity | }; |
508 | aba800a3 | Michael S. Tsirkin | |
509 | aba800a3 | Michael S. Tsirkin | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, |
510 | aba800a3 | Michael S. Tsirkin | uint32_t val, int len)
|
511 | aba800a3 | Michael S. Tsirkin | { |
512 | ed757e14 | Yan Vugenfirer | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
513 | ed757e14 | Yan Vugenfirer | |
514 | 1129714f | Michael S. Tsirkin | pci_default_write_config(pci_dev, address, val, len); |
515 | 1129714f | Michael S. Tsirkin | |
516 | 1129714f | Michael S. Tsirkin | if (range_covers_byte(address, len, PCI_COMMAND) &&
|
517 | 1129714f | Michael S. Tsirkin | !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && |
518 | 1129714f | Michael S. Tsirkin | !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { |
519 | 1129714f | Michael S. Tsirkin | virtio_pci_stop_ioeventfd(proxy); |
520 | 1129714f | Michael S. Tsirkin | virtio_set_status(proxy->vdev, |
521 | 1129714f | Michael S. Tsirkin | proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); |
522 | ed757e14 | Yan Vugenfirer | } |
523 | ed757e14 | Yan Vugenfirer | |
524 | 85352471 | Michael S. Tsirkin | msix_write_config(pci_dev, address, val, len); |
525 | 53c25cea | Paul Brook | } |
526 | 53c25cea | Paul Brook | |
527 | 6d74ca5a | Michael S. Tsirkin | static unsigned virtio_pci_get_features(void *opaque) |
528 | 6d74ca5a | Michael S. Tsirkin | { |
529 | 8172539d | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
530 | 8172539d | Michael S. Tsirkin | return proxy->host_features;
|
531 | 6d74ca5a | Michael S. Tsirkin | } |
532 | 6d74ca5a | Michael S. Tsirkin | |
533 | ade80dc8 | Michael S. Tsirkin | static void virtio_pci_guest_notifier_read(void *opaque) |
534 | ade80dc8 | Michael S. Tsirkin | { |
535 | ade80dc8 | Michael S. Tsirkin | VirtQueue *vq = opaque; |
536 | ade80dc8 | Michael S. Tsirkin | EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
537 | ade80dc8 | Michael S. Tsirkin | if (event_notifier_test_and_clear(n)) {
|
538 | ade80dc8 | Michael S. Tsirkin | virtio_irq(vq); |
539 | ade80dc8 | Michael S. Tsirkin | } |
540 | ade80dc8 | Michael S. Tsirkin | } |
541 | ade80dc8 | Michael S. Tsirkin | |
542 | ade80dc8 | Michael S. Tsirkin | static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) |
543 | ade80dc8 | Michael S. Tsirkin | { |
544 | ade80dc8 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
545 | ade80dc8 | Michael S. Tsirkin | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
546 | ade80dc8 | Michael S. Tsirkin | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
547 | ade80dc8 | Michael S. Tsirkin | |
548 | ade80dc8 | Michael S. Tsirkin | if (assign) {
|
549 | ade80dc8 | Michael S. Tsirkin | int r = event_notifier_init(notifier, 0); |
550 | ade80dc8 | Michael S. Tsirkin | if (r < 0) { |
551 | ade80dc8 | Michael S. Tsirkin | return r;
|
552 | ade80dc8 | Michael S. Tsirkin | } |
553 | ade80dc8 | Michael S. Tsirkin | qemu_set_fd_handler(event_notifier_get_fd(notifier), |
554 | ade80dc8 | Michael S. Tsirkin | virtio_pci_guest_notifier_read, NULL, vq);
|
555 | ade80dc8 | Michael S. Tsirkin | } else {
|
556 | ade80dc8 | Michael S. Tsirkin | qemu_set_fd_handler(event_notifier_get_fd(notifier), |
557 | ade80dc8 | Michael S. Tsirkin | NULL, NULL, NULL); |
558 | ade80dc8 | Michael S. Tsirkin | event_notifier_cleanup(notifier); |
559 | ade80dc8 | Michael S. Tsirkin | } |
560 | ade80dc8 | Michael S. Tsirkin | |
561 | ade80dc8 | Michael S. Tsirkin | return 0; |
562 | ade80dc8 | Michael S. Tsirkin | } |
563 | ade80dc8 | Michael S. Tsirkin | |
564 | 5430a28f | mst@redhat.com | static bool virtio_pci_query_guest_notifiers(void *opaque) |
565 | 5430a28f | mst@redhat.com | { |
566 | 5430a28f | mst@redhat.com | VirtIOPCIProxy *proxy = opaque; |
567 | 5430a28f | mst@redhat.com | return msix_enabled(&proxy->pci_dev);
|
568 | 5430a28f | mst@redhat.com | } |
569 | 5430a28f | mst@redhat.com | |
570 | 54dd9321 | Michael S. Tsirkin | static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
571 | 54dd9321 | Michael S. Tsirkin | { |
572 | 54dd9321 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
573 | 54dd9321 | Michael S. Tsirkin | VirtIODevice *vdev = proxy->vdev; |
574 | 54dd9321 | Michael S. Tsirkin | int r, n;
|
575 | 54dd9321 | Michael S. Tsirkin | |
576 | 54dd9321 | Michael S. Tsirkin | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
577 | 54dd9321 | Michael S. Tsirkin | if (!virtio_queue_get_num(vdev, n)) {
|
578 | 54dd9321 | Michael S. Tsirkin | break;
|
579 | 54dd9321 | Michael S. Tsirkin | } |
580 | 54dd9321 | Michael S. Tsirkin | |
581 | 54dd9321 | Michael S. Tsirkin | r = virtio_pci_set_guest_notifier(opaque, n, assign); |
582 | 54dd9321 | Michael S. Tsirkin | if (r < 0) { |
583 | 54dd9321 | Michael S. Tsirkin | goto assign_error;
|
584 | 54dd9321 | Michael S. Tsirkin | } |
585 | 54dd9321 | Michael S. Tsirkin | } |
586 | 54dd9321 | Michael S. Tsirkin | |
587 | 54dd9321 | Michael S. Tsirkin | return 0; |
588 | 54dd9321 | Michael S. Tsirkin | |
589 | 54dd9321 | Michael S. Tsirkin | assign_error:
|
590 | 54dd9321 | Michael S. Tsirkin | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
|
591 | 54dd9321 | Michael S. Tsirkin | while (--n >= 0) { |
592 | 54dd9321 | Michael S. Tsirkin | virtio_pci_set_guest_notifier(opaque, n, !assign); |
593 | 54dd9321 | Michael S. Tsirkin | } |
594 | 54dd9321 | Michael S. Tsirkin | return r;
|
595 | 54dd9321 | Michael S. Tsirkin | } |
596 | 54dd9321 | Michael S. Tsirkin | |
597 | ade80dc8 | Michael S. Tsirkin | static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
598 | ade80dc8 | Michael S. Tsirkin | { |
599 | ade80dc8 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = opaque; |
600 | 25db9ebe | Stefan Hajnoczi | |
601 | 25db9ebe | Stefan Hajnoczi | /* Stop using ioeventfd for virtqueue kick if the device starts using host
|
602 | 25db9ebe | Stefan Hajnoczi | * notifiers. This makes it easy to avoid stepping on each others' toes.
|
603 | 25db9ebe | Stefan Hajnoczi | */
|
604 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_disabled = assign; |
605 | ade80dc8 | Michael S. Tsirkin | if (assign) {
|
606 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
607 | 25db9ebe | Stefan Hajnoczi | } |
608 | 25db9ebe | Stefan Hajnoczi | /* We don't need to start here: it's not needed because backend
|
609 | 25db9ebe | Stefan Hajnoczi | * currently only stops on status change away from ok,
|
610 | 25db9ebe | Stefan Hajnoczi | * reset, vmstop and such. If we do add code to start here,
|
611 | 25db9ebe | Stefan Hajnoczi | * need to check vmstate, device state etc. */
|
612 | 25db9ebe | Stefan Hajnoczi | return virtio_pci_set_host_notifier_internal(proxy, n, assign);
|
613 | 25db9ebe | Stefan Hajnoczi | } |
614 | 25db9ebe | Stefan Hajnoczi | |
615 | 25db9ebe | Stefan Hajnoczi | static void virtio_pci_vmstate_change(void *opaque, bool running) |
616 | 25db9ebe | Stefan Hajnoczi | { |
617 | 25db9ebe | Stefan Hajnoczi | VirtIOPCIProxy *proxy = opaque; |
618 | 25db9ebe | Stefan Hajnoczi | |
619 | 25db9ebe | Stefan Hajnoczi | if (running) {
|
620 | 89c473fd | Michael S. Tsirkin | /* Try to find out if the guest has bus master disabled, but is
|
621 | 89c473fd | Michael S. Tsirkin | in ready state. Then we have a buggy guest OS. */
|
622 | 89c473fd | Michael S. Tsirkin | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
|
623 | 89c473fd | Michael S. Tsirkin | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
624 | 89c473fd | Michael S. Tsirkin | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
625 | 89c473fd | Michael S. Tsirkin | } |
626 | 25db9ebe | Stefan Hajnoczi | virtio_pci_start_ioeventfd(proxy); |
627 | ade80dc8 | Michael S. Tsirkin | } else {
|
628 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
629 | ade80dc8 | Michael S. Tsirkin | } |
630 | ade80dc8 | Michael S. Tsirkin | } |
631 | ade80dc8 | Michael S. Tsirkin | |
632 | 53c25cea | Paul Brook | static const VirtIOBindings virtio_pci_bindings = { |
633 | ff24bd58 | Michael S. Tsirkin | .notify = virtio_pci_notify, |
634 | ff24bd58 | Michael S. Tsirkin | .save_config = virtio_pci_save_config, |
635 | ff24bd58 | Michael S. Tsirkin | .load_config = virtio_pci_load_config, |
636 | ff24bd58 | Michael S. Tsirkin | .save_queue = virtio_pci_save_queue, |
637 | ff24bd58 | Michael S. Tsirkin | .load_queue = virtio_pci_load_queue, |
638 | 6d74ca5a | Michael S. Tsirkin | .get_features = virtio_pci_get_features, |
639 | 5430a28f | mst@redhat.com | .query_guest_notifiers = virtio_pci_query_guest_notifiers, |
640 | ade80dc8 | Michael S. Tsirkin | .set_host_notifier = virtio_pci_set_host_notifier, |
641 | 54dd9321 | Michael S. Tsirkin | .set_guest_notifiers = virtio_pci_set_guest_notifiers, |
642 | 25db9ebe | Stefan Hajnoczi | .vmstate_change = virtio_pci_vmstate_change, |
643 | 53c25cea | Paul Brook | }; |
644 | 53c25cea | Paul Brook | |
645 | befeac45 | Michael S. Tsirkin | void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
|
646 | 53c25cea | Paul Brook | { |
647 | 53c25cea | Paul Brook | uint8_t *config; |
648 | 53c25cea | Paul Brook | uint32_t size; |
649 | 53c25cea | Paul Brook | |
650 | 53c25cea | Paul Brook | proxy->vdev = vdev; |
651 | 53c25cea | Paul Brook | |
652 | 53c25cea | Paul Brook | config = proxy->pci_dev.config; |
653 | 53c25cea | Paul Brook | |
654 | e75ccf2c | Isaku Yamahata | if (proxy->class_code) {
|
655 | e75ccf2c | Isaku Yamahata | pci_config_set_class(config, proxy->class_code); |
656 | e75ccf2c | Isaku Yamahata | } |
657 | ad3d11e6 | Hui Kai Ran | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
658 | ad3d11e6 | Hui Kai Ran | pci_get_word(config + PCI_VENDOR_ID)); |
659 | ad3d11e6 | Hui Kai Ran | pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); |
660 | ad3d11e6 | Hui Kai Ran | config[PCI_INTERRUPT_PIN] = 1;
|
661 | 53c25cea | Paul Brook | |
662 | 95524ae8 | Avi Kivity | memory_region_init(&proxy->msix_bar, "virtio-msix", 4096); |
663 | 95524ae8 | Avi Kivity | if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors,
|
664 | 95524ae8 | Avi Kivity | &proxy->msix_bar, 1, 0)) { |
665 | e824b2cc | Avi Kivity | pci_register_bar(&proxy->pci_dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY,
|
666 | e824b2cc | Avi Kivity | &proxy->msix_bar); |
667 | aba800a3 | Michael S. Tsirkin | } else
|
668 | aba800a3 | Michael S. Tsirkin | vdev->nvectors = 0;
|
669 | aba800a3 | Michael S. Tsirkin | |
670 | ed757e14 | Yan Vugenfirer | proxy->pci_dev.config_write = virtio_write_config; |
671 | ed757e14 | Yan Vugenfirer | |
672 | aba800a3 | Michael S. Tsirkin | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
673 | 53c25cea | Paul Brook | if (size & (size-1)) |
674 | 53c25cea | Paul Brook | size = 1 << qemu_fls(size);
|
675 | 53c25cea | Paul Brook | |
676 | da146d0a | Avi Kivity | memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
677 | da146d0a | Avi Kivity | "virtio-pci", size);
|
678 | e824b2cc | Avi Kivity | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
679 | e824b2cc | Avi Kivity | &proxy->bar); |
680 | 53c25cea | Paul Brook | |
681 | 25db9ebe | Stefan Hajnoczi | if (!kvm_has_many_ioeventfds()) {
|
682 | 25db9ebe | Stefan Hajnoczi | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
683 | 25db9ebe | Stefan Hajnoczi | } |
684 | 25db9ebe | Stefan Hajnoczi | |
685 | 53c25cea | Paul Brook | virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
686 | 8172539d | Michael S. Tsirkin | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
687 | 8172539d | Michael S. Tsirkin | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
688 | 8172539d | Michael S. Tsirkin | proxy->host_features = vdev->get_features(vdev, proxy->host_features); |
689 | 53c25cea | Paul Brook | } |
690 | 53c25cea | Paul Brook | |
691 | 81a322d4 | Gerd Hoffmann | static int virtio_blk_init_pci(PCIDevice *pci_dev) |
692 | 53c25cea | Paul Brook | { |
693 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
694 | 53c25cea | Paul Brook | VirtIODevice *vdev; |
695 | 53c25cea | Paul Brook | |
696 | ab73ff29 | Gerd Hoffmann | if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
|
697 | ab73ff29 | Gerd Hoffmann | proxy->class_code != PCI_CLASS_STORAGE_OTHER) |
698 | ab73ff29 | Gerd Hoffmann | proxy->class_code = PCI_CLASS_STORAGE_SCSI; |
699 | 53c25cea | Paul Brook | |
700 | a8686a9b | Markus Armbruster | vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block, |
701 | a8686a9b | Markus Armbruster | &proxy->block_serial); |
702 | ac0c14d7 | Markus Armbruster | if (!vdev) {
|
703 | ac0c14d7 | Markus Armbruster | return -1; |
704 | ac0c14d7 | Markus Armbruster | } |
705 | 177539e0 | Gerd Hoffmann | vdev->nvectors = proxy->nvectors; |
706 | e75ccf2c | Isaku Yamahata | virtio_init_pci(proxy, vdev); |
707 | 177539e0 | Gerd Hoffmann | /* make the actual value visible */
|
708 | 177539e0 | Gerd Hoffmann | proxy->nvectors = vdev->nvectors; |
709 | 81a322d4 | Gerd Hoffmann | return 0; |
710 | 21d58b57 | Mark McLoughlin | } |
711 | 21d58b57 | Mark McLoughlin | |
712 | 0f457d91 | Michael S. Tsirkin | static int virtio_exit_pci(PCIDevice *pci_dev) |
713 | 0f457d91 | Michael S. Tsirkin | { |
714 | da146d0a | Avi Kivity | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
715 | 95524ae8 | Avi Kivity | int r;
|
716 | da146d0a | Avi Kivity | |
717 | da146d0a | Avi Kivity | memory_region_destroy(&proxy->bar); |
718 | 95524ae8 | Avi Kivity | r = msix_uninit(pci_dev, &proxy->msix_bar); |
719 | 95524ae8 | Avi Kivity | memory_region_destroy(&proxy->msix_bar); |
720 | 95524ae8 | Avi Kivity | return r;
|
721 | 0f457d91 | Michael S. Tsirkin | } |
722 | 0f457d91 | Michael S. Tsirkin | |
723 | 56a14938 | Gerd Hoffmann | static int virtio_blk_exit_pci(PCIDevice *pci_dev) |
724 | 56a14938 | Gerd Hoffmann | { |
725 | 56a14938 | Gerd Hoffmann | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
726 | 56a14938 | Gerd Hoffmann | |
727 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
728 | 9d0d3138 | Alex Williamson | virtio_blk_exit(proxy->vdev); |
729 | f8b6cc00 | Markus Armbruster | blockdev_mark_auto_del(proxy->block.bs); |
730 | 0f457d91 | Michael S. Tsirkin | return virtio_exit_pci(pci_dev);
|
731 | 56a14938 | Gerd Hoffmann | } |
732 | 56a14938 | Gerd Hoffmann | |
733 | 98b19252 | Amit Shah | static int virtio_serial_init_pci(PCIDevice *pci_dev) |
734 | 21d58b57 | Mark McLoughlin | { |
735 | d6beee99 | Gerd Hoffmann | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
736 | 85c2c735 | Mark McLoughlin | VirtIODevice *vdev; |
737 | 85c2c735 | Mark McLoughlin | |
738 | d6beee99 | Gerd Hoffmann | if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
|
739 | d6beee99 | Gerd Hoffmann | proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
|
740 | d6beee99 | Gerd Hoffmann | proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */
|
741 | d6beee99 | Gerd Hoffmann | proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; |
742 | d6beee99 | Gerd Hoffmann | |
743 | 6b331efb | Amit Shah | vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); |
744 | 25fe3654 | Amit Shah | if (!vdev) {
|
745 | 25fe3654 | Amit Shah | return -1; |
746 | 25fe3654 | Amit Shah | } |
747 | 573fb60c | Amit Shah | vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
748 | 6b331efb | Amit Shah | ? proxy->serial.max_virtserial_ports + 1
|
749 | 573fb60c | Amit Shah | : proxy->nvectors; |
750 | e75ccf2c | Isaku Yamahata | virtio_init_pci(proxy, vdev); |
751 | a1829205 | Amit Shah | proxy->nvectors = vdev->nvectors; |
752 | 81a322d4 | Gerd Hoffmann | return 0; |
753 | 53c25cea | Paul Brook | } |
754 | 53c25cea | Paul Brook | |
755 | 8b53a865 | Amit Shah | static int virtio_serial_exit_pci(PCIDevice *pci_dev) |
756 | 8b53a865 | Amit Shah | { |
757 | 8b53a865 | Amit Shah | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
758 | 8b53a865 | Amit Shah | |
759 | 32059220 | Amit Shah | virtio_pci_stop_ioeventfd(proxy); |
760 | 8b53a865 | Amit Shah | virtio_serial_exit(proxy->vdev); |
761 | 8b53a865 | Amit Shah | return virtio_exit_pci(pci_dev);
|
762 | 8b53a865 | Amit Shah | } |
763 | 8b53a865 | Amit Shah | |
764 | 81a322d4 | Gerd Hoffmann | static int virtio_net_init_pci(PCIDevice *pci_dev) |
765 | 53c25cea | Paul Brook | { |
766 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
767 | 53c25cea | Paul Brook | VirtIODevice *vdev; |
768 | 53c25cea | Paul Brook | |
769 | f0c07c7c | Alex Williamson | vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); |
770 | a1e0fea5 | Gerd Hoffmann | |
771 | 97b15621 | Gerd Hoffmann | vdev->nvectors = proxy->nvectors; |
772 | e75ccf2c | Isaku Yamahata | virtio_init_pci(proxy, vdev); |
773 | a1e0fea5 | Gerd Hoffmann | |
774 | a1e0fea5 | Gerd Hoffmann | /* make the actual value visible */
|
775 | a1e0fea5 | Gerd Hoffmann | proxy->nvectors = vdev->nvectors; |
776 | 81a322d4 | Gerd Hoffmann | return 0; |
777 | 53c25cea | Paul Brook | } |
778 | 53c25cea | Paul Brook | |
779 | 97b15621 | Gerd Hoffmann | static int virtio_net_exit_pci(PCIDevice *pci_dev) |
780 | 97b15621 | Gerd Hoffmann | { |
781 | 97b15621 | Gerd Hoffmann | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
782 | 97b15621 | Gerd Hoffmann | |
783 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
784 | 97b15621 | Gerd Hoffmann | virtio_net_exit(proxy->vdev); |
785 | 97b15621 | Gerd Hoffmann | return virtio_exit_pci(pci_dev);
|
786 | 97b15621 | Gerd Hoffmann | } |
787 | 97b15621 | Gerd Hoffmann | |
788 | 81a322d4 | Gerd Hoffmann | static int virtio_balloon_init_pci(PCIDevice *pci_dev) |
789 | 53c25cea | Paul Brook | { |
790 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
791 | 53c25cea | Paul Brook | VirtIODevice *vdev; |
792 | 53c25cea | Paul Brook | |
793 | 53c25cea | Paul Brook | vdev = virtio_balloon_init(&pci_dev->qdev); |
794 | f76f6655 | Amit Shah | if (!vdev) {
|
795 | f76f6655 | Amit Shah | return -1; |
796 | f76f6655 | Amit Shah | } |
797 | e75ccf2c | Isaku Yamahata | virtio_init_pci(proxy, vdev); |
798 | 81a322d4 | Gerd Hoffmann | return 0; |
799 | 53c25cea | Paul Brook | } |
800 | 53c25cea | Paul Brook | |
801 | 855d7e25 | Amit Shah | static int virtio_balloon_exit_pci(PCIDevice *pci_dev) |
802 | 855d7e25 | Amit Shah | { |
803 | 855d7e25 | Amit Shah | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
804 | 855d7e25 | Amit Shah | |
805 | 855d7e25 | Amit Shah | virtio_pci_stop_ioeventfd(proxy); |
806 | 855d7e25 | Amit Shah | virtio_balloon_exit(proxy->vdev); |
807 | 855d7e25 | Amit Shah | return virtio_exit_pci(pci_dev);
|
808 | 855d7e25 | Amit Shah | } |
809 | 855d7e25 | Amit Shah | |
810 | 40021f08 | Anthony Liguori | static Property virtio_blk_properties[] = {
|
811 | 40021f08 | Anthony Liguori | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
812 | 40021f08 | Anthony Liguori | DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block), |
813 | 40021f08 | Anthony Liguori | DEFINE_PROP_STRING("serial", VirtIOPCIProxy, block_serial),
|
814 | 40021f08 | Anthony Liguori | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
815 | 40021f08 | Anthony Liguori | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
816 | 40021f08 | Anthony Liguori | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), |
817 | 40021f08 | Anthony Liguori | DEFINE_PROP_END_OF_LIST(), |
818 | e855761c | Anthony Liguori | }; |
819 | e855761c | Anthony Liguori | |
820 | 40021f08 | Anthony Liguori | static void virtio_blk_class_init(ObjectClass *klass, void *data) |
821 | 40021f08 | Anthony Liguori | { |
822 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
823 | 40021f08 | Anthony Liguori | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
824 | 40021f08 | Anthony Liguori | |
825 | 40021f08 | Anthony Liguori | k->init = virtio_blk_init_pci; |
826 | 40021f08 | Anthony Liguori | k->exit = virtio_blk_exit_pci; |
827 | 40021f08 | Anthony Liguori | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
828 | 40021f08 | Anthony Liguori | k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; |
829 | 40021f08 | Anthony Liguori | k->revision = VIRTIO_PCI_ABI_VERSION; |
830 | 40021f08 | Anthony Liguori | k->class_id = PCI_CLASS_STORAGE_SCSI; |
831 | 39bffca2 | Anthony Liguori | dc->reset = virtio_pci_reset; |
832 | 39bffca2 | Anthony Liguori | dc->props = virtio_blk_properties; |
833 | 40021f08 | Anthony Liguori | } |
834 | 40021f08 | Anthony Liguori | |
835 | 39bffca2 | Anthony Liguori | static TypeInfo virtio_blk_info = {
|
836 | 39bffca2 | Anthony Liguori | .name = "virtio-blk-pci",
|
837 | 39bffca2 | Anthony Liguori | .parent = TYPE_PCI_DEVICE, |
838 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(VirtIOPCIProxy),
|
839 | 39bffca2 | Anthony Liguori | .class_init = virtio_blk_class_init, |
840 | 40021f08 | Anthony Liguori | }; |
841 | 40021f08 | Anthony Liguori | |
842 | 40021f08 | Anthony Liguori | static Property virtio_net_properties[] = {
|
843 | 40021f08 | Anthony Liguori | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), |
844 | 40021f08 | Anthony Liguori | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), |
845 | 40021f08 | Anthony Liguori | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), |
846 | 40021f08 | Anthony Liguori | DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), |
847 | 40021f08 | Anthony Liguori | DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL),
|
848 | 40021f08 | Anthony Liguori | DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST),
|
849 | 40021f08 | Anthony Liguori | DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx),
|
850 | 40021f08 | Anthony Liguori | DEFINE_PROP_END_OF_LIST(), |
851 | 40021f08 | Anthony Liguori | }; |
852 | 40021f08 | Anthony Liguori | |
853 | 40021f08 | Anthony Liguori | static void virtio_net_class_init(ObjectClass *klass, void *data) |
854 | 40021f08 | Anthony Liguori | { |
855 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
856 | 40021f08 | Anthony Liguori | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
857 | 40021f08 | Anthony Liguori | |
858 | 40021f08 | Anthony Liguori | k->init = virtio_net_init_pci; |
859 | 40021f08 | Anthony Liguori | k->exit = virtio_net_exit_pci; |
860 | 40021f08 | Anthony Liguori | k->romfile = "pxe-virtio.rom";
|
861 | 40021f08 | Anthony Liguori | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
862 | 40021f08 | Anthony Liguori | k->device_id = PCI_DEVICE_ID_VIRTIO_NET; |
863 | 40021f08 | Anthony Liguori | k->revision = VIRTIO_PCI_ABI_VERSION; |
864 | 40021f08 | Anthony Liguori | k->class_id = PCI_CLASS_NETWORK_ETHERNET; |
865 | 39bffca2 | Anthony Liguori | dc->reset = virtio_pci_reset; |
866 | 39bffca2 | Anthony Liguori | dc->props = virtio_net_properties; |
867 | 40021f08 | Anthony Liguori | } |
868 | 40021f08 | Anthony Liguori | |
869 | 39bffca2 | Anthony Liguori | static TypeInfo virtio_net_info = {
|
870 | 39bffca2 | Anthony Liguori | .name = "virtio-net-pci",
|
871 | 39bffca2 | Anthony Liguori | .parent = TYPE_PCI_DEVICE, |
872 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(VirtIOPCIProxy),
|
873 | 39bffca2 | Anthony Liguori | .class_init = virtio_net_class_init, |
874 | e855761c | Anthony Liguori | }; |
875 | e855761c | Anthony Liguori | |
876 | 40021f08 | Anthony Liguori | static Property virtio_serial_properties[] = {
|
877 | 40021f08 | Anthony Liguori | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
878 | 40021f08 | Anthony Liguori | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED),
|
879 | 40021f08 | Anthony Liguori | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
880 | 40021f08 | Anthony Liguori | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
881 | 40021f08 | Anthony Liguori | DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), |
882 | 40021f08 | Anthony Liguori | DEFINE_PROP_END_OF_LIST(), |
883 | e855761c | Anthony Liguori | }; |
884 | e855761c | Anthony Liguori | |
885 | 40021f08 | Anthony Liguori | static void virtio_serial_class_init(ObjectClass *klass, void *data) |
886 | 40021f08 | Anthony Liguori | { |
887 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
888 | 40021f08 | Anthony Liguori | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
889 | 40021f08 | Anthony Liguori | |
890 | 40021f08 | Anthony Liguori | k->init = virtio_serial_init_pci; |
891 | 40021f08 | Anthony Liguori | k->exit = virtio_serial_exit_pci; |
892 | 40021f08 | Anthony Liguori | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
893 | 40021f08 | Anthony Liguori | k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; |
894 | 40021f08 | Anthony Liguori | k->revision = VIRTIO_PCI_ABI_VERSION; |
895 | 40021f08 | Anthony Liguori | k->class_id = PCI_CLASS_COMMUNICATION_OTHER; |
896 | 39bffca2 | Anthony Liguori | dc->reset = virtio_pci_reset; |
897 | 39bffca2 | Anthony Liguori | dc->props = virtio_serial_properties; |
898 | 40021f08 | Anthony Liguori | } |
899 | 40021f08 | Anthony Liguori | |
900 | 39bffca2 | Anthony Liguori | static TypeInfo virtio_serial_info = {
|
901 | 39bffca2 | Anthony Liguori | .name = "virtio-serial-pci",
|
902 | 39bffca2 | Anthony Liguori | .parent = TYPE_PCI_DEVICE, |
903 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(VirtIOPCIProxy),
|
904 | 39bffca2 | Anthony Liguori | .class_init = virtio_serial_class_init, |
905 | 40021f08 | Anthony Liguori | }; |
906 | 40021f08 | Anthony Liguori | |
907 | 40021f08 | Anthony Liguori | static Property virtio_balloon_properties[] = {
|
908 | 40021f08 | Anthony Liguori | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
909 | 40021f08 | Anthony Liguori | DEFINE_PROP_END_OF_LIST(), |
910 | 40021f08 | Anthony Liguori | }; |
911 | 40021f08 | Anthony Liguori | |
912 | 40021f08 | Anthony Liguori | static void virtio_balloon_class_init(ObjectClass *klass, void *data) |
913 | 40021f08 | Anthony Liguori | { |
914 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
915 | 40021f08 | Anthony Liguori | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
916 | 40021f08 | Anthony Liguori | |
917 | 40021f08 | Anthony Liguori | k->init = virtio_balloon_init_pci; |
918 | 40021f08 | Anthony Liguori | k->exit = virtio_balloon_exit_pci; |
919 | 40021f08 | Anthony Liguori | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
920 | 40021f08 | Anthony Liguori | k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; |
921 | 40021f08 | Anthony Liguori | k->revision = VIRTIO_PCI_ABI_VERSION; |
922 | 40021f08 | Anthony Liguori | k->class_id = PCI_CLASS_MEMORY_RAM; |
923 | 39bffca2 | Anthony Liguori | dc->reset = virtio_pci_reset; |
924 | 39bffca2 | Anthony Liguori | dc->props = virtio_balloon_properties; |
925 | 40021f08 | Anthony Liguori | } |
926 | 40021f08 | Anthony Liguori | |
927 | 39bffca2 | Anthony Liguori | static TypeInfo virtio_balloon_info = {
|
928 | 39bffca2 | Anthony Liguori | .name = "virtio-balloon-pci",
|
929 | 39bffca2 | Anthony Liguori | .parent = TYPE_PCI_DEVICE, |
930 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(VirtIOPCIProxy),
|
931 | 39bffca2 | Anthony Liguori | .class_init = virtio_balloon_class_init, |
932 | 0aab0d3a | Gerd Hoffmann | }; |
933 | 0aab0d3a | Gerd Hoffmann | |
934 | 973abc7f | Stefan Hajnoczi | static int virtio_scsi_init_pci(PCIDevice *pci_dev) |
935 | 973abc7f | Stefan Hajnoczi | { |
936 | 973abc7f | Stefan Hajnoczi | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
937 | 973abc7f | Stefan Hajnoczi | VirtIODevice *vdev; |
938 | 973abc7f | Stefan Hajnoczi | |
939 | 973abc7f | Stefan Hajnoczi | vdev = virtio_scsi_init(&pci_dev->qdev, &proxy->scsi); |
940 | 973abc7f | Stefan Hajnoczi | if (!vdev) {
|
941 | 973abc7f | Stefan Hajnoczi | return -EINVAL;
|
942 | 973abc7f | Stefan Hajnoczi | } |
943 | 973abc7f | Stefan Hajnoczi | |
944 | 973abc7f | Stefan Hajnoczi | vdev->nvectors = proxy->nvectors; |
945 | 973abc7f | Stefan Hajnoczi | virtio_init_pci(proxy, vdev); |
946 | 973abc7f | Stefan Hajnoczi | |
947 | 973abc7f | Stefan Hajnoczi | /* make the actual value visible */
|
948 | 973abc7f | Stefan Hajnoczi | proxy->nvectors = vdev->nvectors; |
949 | 973abc7f | Stefan Hajnoczi | return 0; |
950 | 973abc7f | Stefan Hajnoczi | } |
951 | 973abc7f | Stefan Hajnoczi | |
952 | 973abc7f | Stefan Hajnoczi | static int virtio_scsi_exit_pci(PCIDevice *pci_dev) |
953 | 973abc7f | Stefan Hajnoczi | { |
954 | 973abc7f | Stefan Hajnoczi | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
955 | 973abc7f | Stefan Hajnoczi | |
956 | 973abc7f | Stefan Hajnoczi | virtio_scsi_exit(proxy->vdev); |
957 | 973abc7f | Stefan Hajnoczi | return virtio_exit_pci(pci_dev);
|
958 | 973abc7f | Stefan Hajnoczi | } |
959 | 973abc7f | Stefan Hajnoczi | |
960 | 973abc7f | Stefan Hajnoczi | static Property virtio_scsi_properties[] = {
|
961 | 973abc7f | Stefan Hajnoczi | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
962 | 973abc7f | Stefan Hajnoczi | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi), |
963 | 973abc7f | Stefan Hajnoczi | DEFINE_PROP_END_OF_LIST(), |
964 | 973abc7f | Stefan Hajnoczi | }; |
965 | 973abc7f | Stefan Hajnoczi | |
966 | 973abc7f | Stefan Hajnoczi | static void virtio_scsi_class_init(ObjectClass *klass, void *data) |
967 | 973abc7f | Stefan Hajnoczi | { |
968 | 973abc7f | Stefan Hajnoczi | DeviceClass *dc = DEVICE_CLASS(klass); |
969 | 973abc7f | Stefan Hajnoczi | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
970 | 973abc7f | Stefan Hajnoczi | |
971 | 973abc7f | Stefan Hajnoczi | k->init = virtio_scsi_init_pci; |
972 | 973abc7f | Stefan Hajnoczi | k->exit = virtio_scsi_exit_pci; |
973 | 973abc7f | Stefan Hajnoczi | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
974 | 973abc7f | Stefan Hajnoczi | k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
975 | 973abc7f | Stefan Hajnoczi | k->revision = 0x00;
|
976 | 973abc7f | Stefan Hajnoczi | k->class_id = PCI_CLASS_STORAGE_SCSI; |
977 | 973abc7f | Stefan Hajnoczi | dc->reset = virtio_pci_reset; |
978 | 973abc7f | Stefan Hajnoczi | dc->props = virtio_scsi_properties; |
979 | 973abc7f | Stefan Hajnoczi | } |
980 | 973abc7f | Stefan Hajnoczi | |
981 | 973abc7f | Stefan Hajnoczi | static TypeInfo virtio_scsi_info = {
|
982 | 973abc7f | Stefan Hajnoczi | .name = "virtio-scsi-pci",
|
983 | 973abc7f | Stefan Hajnoczi | .parent = TYPE_PCI_DEVICE, |
984 | 973abc7f | Stefan Hajnoczi | .instance_size = sizeof(VirtIOPCIProxy),
|
985 | 973abc7f | Stefan Hajnoczi | .class_init = virtio_scsi_class_init, |
986 | 973abc7f | Stefan Hajnoczi | }; |
987 | 973abc7f | Stefan Hajnoczi | |
988 | 83f7d43a | Andreas Färber | static void virtio_pci_register_types(void) |
989 | 53c25cea | Paul Brook | { |
990 | 39bffca2 | Anthony Liguori | type_register_static(&virtio_blk_info); |
991 | 39bffca2 | Anthony Liguori | type_register_static(&virtio_net_info); |
992 | 39bffca2 | Anthony Liguori | type_register_static(&virtio_serial_info); |
993 | 39bffca2 | Anthony Liguori | type_register_static(&virtio_balloon_info); |
994 | 973abc7f | Stefan Hajnoczi | type_register_static(&virtio_scsi_info); |
995 | 53c25cea | Paul Brook | } |
996 | 53c25cea | Paul Brook | |
997 | 83f7d43a | Andreas Färber | type_init(virtio_pci_register_types) |