root / hw / virtio / virtio-pci.c @ 881d588a
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1 | 53c25cea | Paul Brook | /*
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2 | 53c25cea | Paul Brook | * Virtio PCI Bindings
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3 | 53c25cea | Paul Brook | *
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4 | 53c25cea | Paul Brook | * Copyright IBM, Corp. 2007
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5 | 53c25cea | Paul Brook | * Copyright (c) 2009 CodeSourcery
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6 | 53c25cea | Paul Brook | *
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7 | 53c25cea | Paul Brook | * Authors:
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8 | 53c25cea | Paul Brook | * Anthony Liguori <aliguori@us.ibm.com>
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9 | 53c25cea | Paul Brook | * Paul Brook <paul@codesourcery.com>
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10 | 53c25cea | Paul Brook | *
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11 | 53c25cea | Paul Brook | * This work is licensed under the terms of the GNU GPL, version 2. See
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12 | 53c25cea | Paul Brook | * the COPYING file in the top-level directory.
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13 | 53c25cea | Paul Brook | *
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14 | 6b620ca3 | Paolo Bonzini | * Contributions after 2012-01-13 are licensed under the terms of the
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15 | 6b620ca3 | Paolo Bonzini | * GNU GPL, version 2 or (at your option) any later version.
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16 | 53c25cea | Paul Brook | */
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17 | 53c25cea | Paul Brook | |
18 | 53c25cea | Paul Brook | #include <inttypes.h> |
19 | 53c25cea | Paul Brook | |
20 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio.h" |
21 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio-blk.h" |
22 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio-net.h" |
23 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio-serial.h" |
24 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio-scsi.h" |
25 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio-balloon.h" |
26 | 83c9f4ca | Paolo Bonzini | #include "hw/pci/pci.h" |
27 | 1de7afc9 | Paolo Bonzini | #include "qemu/error-report.h" |
28 | 83c9f4ca | Paolo Bonzini | #include "hw/pci/msi.h" |
29 | 83c9f4ca | Paolo Bonzini | #include "hw/pci/msix.h" |
30 | 83c9f4ca | Paolo Bonzini | #include "hw/loader.h" |
31 | 9c17d615 | Paolo Bonzini | #include "sysemu/kvm.h" |
32 | 9c17d615 | Paolo Bonzini | #include "sysemu/blockdev.h" |
33 | 47b43a1f | Paolo Bonzini | #include "virtio-pci.h" |
34 | 1de7afc9 | Paolo Bonzini | #include "qemu/range.h" |
35 | 0d09e41a | Paolo Bonzini | #include "hw/virtio/virtio-bus.h" |
36 | 24a6e7f4 | KONRAD Frederic | #include "qapi/visitor.h" |
37 | 53c25cea | Paul Brook | |
38 | 53c25cea | Paul Brook | /* from Linux's linux/virtio_pci.h */
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39 | 53c25cea | Paul Brook | |
40 | 53c25cea | Paul Brook | /* A 32-bit r/o bitmask of the features supported by the host */
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41 | 53c25cea | Paul Brook | #define VIRTIO_PCI_HOST_FEATURES 0 |
42 | 53c25cea | Paul Brook | |
43 | 53c25cea | Paul Brook | /* A 32-bit r/w bitmask of features activated by the guest */
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44 | 53c25cea | Paul Brook | #define VIRTIO_PCI_GUEST_FEATURES 4 |
45 | 53c25cea | Paul Brook | |
46 | 53c25cea | Paul Brook | /* A 32-bit r/w PFN for the currently selected queue */
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47 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_PFN 8 |
48 | 53c25cea | Paul Brook | |
49 | 53c25cea | Paul Brook | /* A 16-bit r/o queue size for the currently selected queue */
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50 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_NUM 12 |
51 | 53c25cea | Paul Brook | |
52 | 53c25cea | Paul Brook | /* A 16-bit r/w queue selector */
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53 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_SEL 14 |
54 | 53c25cea | Paul Brook | |
55 | 53c25cea | Paul Brook | /* A 16-bit r/w queue notifier */
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56 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_NOTIFY 16 |
57 | 53c25cea | Paul Brook | |
58 | 53c25cea | Paul Brook | /* An 8-bit device status register. */
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59 | 53c25cea | Paul Brook | #define VIRTIO_PCI_STATUS 18 |
60 | 53c25cea | Paul Brook | |
61 | 53c25cea | Paul Brook | /* An 8-bit r/o interrupt status register. Reading the value will return the
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62 | 53c25cea | Paul Brook | * current contents of the ISR and will also clear it. This is effectively
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63 | 53c25cea | Paul Brook | * a read-and-acknowledge. */
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64 | 53c25cea | Paul Brook | #define VIRTIO_PCI_ISR 19 |
65 | 53c25cea | Paul Brook | |
66 | aba800a3 | Michael S. Tsirkin | /* MSI-X registers: only enabled if MSI-X is enabled. */
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67 | aba800a3 | Michael S. Tsirkin | /* A 16-bit vector for configuration changes. */
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68 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_MSI_CONFIG_VECTOR 20 |
69 | aba800a3 | Michael S. Tsirkin | /* A 16-bit vector for selected queue notifications. */
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70 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_MSI_QUEUE_VECTOR 22 |
71 | aba800a3 | Michael S. Tsirkin | |
72 | aba800a3 | Michael S. Tsirkin | /* Config space size */
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73 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_CONFIG_NOMSI 20 |
74 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_CONFIG_MSI 24 |
75 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \
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76 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_MSI : \ |
77 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_NOMSI) |
78 | aba800a3 | Michael S. Tsirkin | |
79 | aba800a3 | Michael S. Tsirkin | /* The remaining space is defined by each driver as the per-driver
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80 | aba800a3 | Michael S. Tsirkin | * configuration space */
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81 | aba800a3 | Michael S. Tsirkin | #define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \
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82 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_MSI : \ |
83 | aba800a3 | Michael S. Tsirkin | VIRTIO_PCI_CONFIG_NOMSI) |
84 | 53c25cea | Paul Brook | |
85 | 53c25cea | Paul Brook | /* How many bits to shift physical queue address written to QUEUE_PFN.
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86 | 53c25cea | Paul Brook | * 12 is historical, and due to x86 page size. */
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87 | 53c25cea | Paul Brook | #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 |
88 | 53c25cea | Paul Brook | |
89 | 3dbca8e6 | Stefan Hajnoczi | /* Flags track per-device state like workarounds for quirks in older guests. */
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90 | 3dbca8e6 | Stefan Hajnoczi | #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) |
91 | c81131db | Alexander Graf | |
92 | 53c25cea | Paul Brook | /* QEMU doesn't strictly need write barriers since everything runs in
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93 | 53c25cea | Paul Brook | * lock-step. We'll leave the calls to wmb() in though to make it obvious for
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94 | 53c25cea | Paul Brook | * KVM or if kqemu gets SMP support.
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95 | 53c25cea | Paul Brook | */
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96 | 53c25cea | Paul Brook | #define wmb() do { } while (0) |
97 | 53c25cea | Paul Brook | |
98 | 8e4a424b | Blue Swirl | /* HACK for virtio to determine if it's running a big endian guest */
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99 | 8e4a424b | Blue Swirl | bool virtio_is_big_endian(void); |
100 | 8e4a424b | Blue Swirl | |
101 | 53c25cea | Paul Brook | /* virtio device */
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102 | d2a0ccc6 | Michael S. Tsirkin | /* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */
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103 | d2a0ccc6 | Michael S. Tsirkin | static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d) |
104 | d2a0ccc6 | Michael S. Tsirkin | { |
105 | d2a0ccc6 | Michael S. Tsirkin | return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
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106 | d2a0ccc6 | Michael S. Tsirkin | } |
107 | 53c25cea | Paul Brook | |
108 | d2a0ccc6 | Michael S. Tsirkin | /* DeviceState to VirtIOPCIProxy. Note: used on datapath,
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109 | d2a0ccc6 | Michael S. Tsirkin | * be careful and test performance if you change this.
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110 | d2a0ccc6 | Michael S. Tsirkin | */
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111 | d2a0ccc6 | Michael S. Tsirkin | static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d) |
112 | 53c25cea | Paul Brook | { |
113 | d2a0ccc6 | Michael S. Tsirkin | return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
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114 | d2a0ccc6 | Michael S. Tsirkin | } |
115 | d2a0ccc6 | Michael S. Tsirkin | |
116 | d2a0ccc6 | Michael S. Tsirkin | static void virtio_pci_notify(DeviceState *d, uint16_t vector) |
117 | d2a0ccc6 | Michael S. Tsirkin | { |
118 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d); |
119 | aba800a3 | Michael S. Tsirkin | if (msix_enabled(&proxy->pci_dev))
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120 | aba800a3 | Michael S. Tsirkin | msix_notify(&proxy->pci_dev, vector); |
121 | aba800a3 | Michael S. Tsirkin | else
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122 | aba800a3 | Michael S. Tsirkin | qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); |
123 | 53c25cea | Paul Brook | } |
124 | 53c25cea | Paul Brook | |
125 | d2a0ccc6 | Michael S. Tsirkin | static void virtio_pci_save_config(DeviceState *d, QEMUFile *f) |
126 | ff24bd58 | Michael S. Tsirkin | { |
127 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
128 | ff24bd58 | Michael S. Tsirkin | pci_device_save(&proxy->pci_dev, f); |
129 | ff24bd58 | Michael S. Tsirkin | msix_save(&proxy->pci_dev, f); |
130 | ff24bd58 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev))
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131 | ff24bd58 | Michael S. Tsirkin | qemu_put_be16(f, proxy->vdev->config_vector); |
132 | ff24bd58 | Michael S. Tsirkin | } |
133 | ff24bd58 | Michael S. Tsirkin | |
134 | d2a0ccc6 | Michael S. Tsirkin | static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f) |
135 | ff24bd58 | Michael S. Tsirkin | { |
136 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
137 | ff24bd58 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev))
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138 | ff24bd58 | Michael S. Tsirkin | qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); |
139 | ff24bd58 | Michael S. Tsirkin | } |
140 | ff24bd58 | Michael S. Tsirkin | |
141 | d2a0ccc6 | Michael S. Tsirkin | static int virtio_pci_load_config(DeviceState *d, QEMUFile *f) |
142 | ff24bd58 | Michael S. Tsirkin | { |
143 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
144 | ff24bd58 | Michael S. Tsirkin | int ret;
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145 | ff24bd58 | Michael S. Tsirkin | ret = pci_device_load(&proxy->pci_dev, f); |
146 | e6da7680 | Michael S. Tsirkin | if (ret) {
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147 | ff24bd58 | Michael S. Tsirkin | return ret;
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148 | e6da7680 | Michael S. Tsirkin | } |
149 | 3cac001e | Michael S. Tsirkin | msix_unuse_all_vectors(&proxy->pci_dev); |
150 | ff24bd58 | Michael S. Tsirkin | msix_load(&proxy->pci_dev, f); |
151 | e6da7680 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev)) {
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152 | ff24bd58 | Michael S. Tsirkin | qemu_get_be16s(f, &proxy->vdev->config_vector); |
153 | e6da7680 | Michael S. Tsirkin | } else {
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154 | e6da7680 | Michael S. Tsirkin | proxy->vdev->config_vector = VIRTIO_NO_VECTOR; |
155 | e6da7680 | Michael S. Tsirkin | } |
156 | e6da7680 | Michael S. Tsirkin | if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
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157 | e6da7680 | Michael S. Tsirkin | return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
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158 | e6da7680 | Michael S. Tsirkin | } |
159 | ff24bd58 | Michael S. Tsirkin | return 0; |
160 | ff24bd58 | Michael S. Tsirkin | } |
161 | ff24bd58 | Michael S. Tsirkin | |
162 | d2a0ccc6 | Michael S. Tsirkin | static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) |
163 | ff24bd58 | Michael S. Tsirkin | { |
164 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
165 | ff24bd58 | Michael S. Tsirkin | uint16_t vector; |
166 | e6da7680 | Michael S. Tsirkin | if (msix_present(&proxy->pci_dev)) {
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167 | e6da7680 | Michael S. Tsirkin | qemu_get_be16s(f, &vector); |
168 | e6da7680 | Michael S. Tsirkin | } else {
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169 | e6da7680 | Michael S. Tsirkin | vector = VIRTIO_NO_VECTOR; |
170 | e6da7680 | Michael S. Tsirkin | } |
171 | ff24bd58 | Michael S. Tsirkin | virtio_queue_set_vector(proxy->vdev, n, vector); |
172 | e6da7680 | Michael S. Tsirkin | if (vector != VIRTIO_NO_VECTOR) {
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173 | e6da7680 | Michael S. Tsirkin | return msix_vector_use(&proxy->pci_dev, vector);
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174 | e6da7680 | Michael S. Tsirkin | } |
175 | ff24bd58 | Michael S. Tsirkin | return 0; |
176 | ff24bd58 | Michael S. Tsirkin | } |
177 | ff24bd58 | Michael S. Tsirkin | |
178 | 25db9ebe | Stefan Hajnoczi | static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
179 | 26b9b5fe | Paolo Bonzini | int n, bool assign, bool set_handler) |
180 | 25db9ebe | Stefan Hajnoczi | { |
181 | 25db9ebe | Stefan Hajnoczi | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
182 | 25db9ebe | Stefan Hajnoczi | EventNotifier *notifier = virtio_queue_get_host_notifier(vq); |
183 | da146d0a | Avi Kivity | int r = 0; |
184 | da146d0a | Avi Kivity | |
185 | 25db9ebe | Stefan Hajnoczi | if (assign) {
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186 | 25db9ebe | Stefan Hajnoczi | r = event_notifier_init(notifier, 1);
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187 | 25db9ebe | Stefan Hajnoczi | if (r < 0) { |
188 | b36e3914 | Michael S. Tsirkin | error_report("%s: unable to init event notifier: %d",
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189 | b36e3914 | Michael S. Tsirkin | __func__, r); |
190 | 25db9ebe | Stefan Hajnoczi | return r;
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191 | 25db9ebe | Stefan Hajnoczi | } |
192 | 26b9b5fe | Paolo Bonzini | virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
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193 | da146d0a | Avi Kivity | memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
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194 | 753d5e14 | Paolo Bonzini | true, n, notifier);
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195 | 25db9ebe | Stefan Hajnoczi | } else {
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196 | da146d0a | Avi Kivity | memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
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197 | 753d5e14 | Paolo Bonzini | true, n, notifier);
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198 | 26b9b5fe | Paolo Bonzini | virtio_queue_set_host_notifier_fd_handler(vq, false, false); |
199 | 25db9ebe | Stefan Hajnoczi | event_notifier_cleanup(notifier); |
200 | 25db9ebe | Stefan Hajnoczi | } |
201 | 25db9ebe | Stefan Hajnoczi | return r;
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202 | 25db9ebe | Stefan Hajnoczi | } |
203 | 25db9ebe | Stefan Hajnoczi | |
204 | b36e3914 | Michael S. Tsirkin | static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
205 | 25db9ebe | Stefan Hajnoczi | { |
206 | 25db9ebe | Stefan Hajnoczi | int n, r;
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207 | 25db9ebe | Stefan Hajnoczi | |
208 | 25db9ebe | Stefan Hajnoczi | if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) ||
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209 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_disabled || |
210 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started) { |
211 | b36e3914 | Michael S. Tsirkin | return;
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212 | 25db9ebe | Stefan Hajnoczi | } |
213 | 25db9ebe | Stefan Hajnoczi | |
214 | 25db9ebe | Stefan Hajnoczi | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
215 | 25db9ebe | Stefan Hajnoczi | if (!virtio_queue_get_num(proxy->vdev, n)) {
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216 | 25db9ebe | Stefan Hajnoczi | continue;
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217 | 25db9ebe | Stefan Hajnoczi | } |
218 | 25db9ebe | Stefan Hajnoczi | |
219 | 26b9b5fe | Paolo Bonzini | r = virtio_pci_set_host_notifier_internal(proxy, n, true, true); |
220 | 25db9ebe | Stefan Hajnoczi | if (r < 0) { |
221 | 25db9ebe | Stefan Hajnoczi | goto assign_error;
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222 | 25db9ebe | Stefan Hajnoczi | } |
223 | 25db9ebe | Stefan Hajnoczi | } |
224 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started = true;
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225 | b36e3914 | Michael S. Tsirkin | return;
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226 | 25db9ebe | Stefan Hajnoczi | |
227 | 25db9ebe | Stefan Hajnoczi | assign_error:
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228 | 25db9ebe | Stefan Hajnoczi | while (--n >= 0) { |
229 | 25db9ebe | Stefan Hajnoczi | if (!virtio_queue_get_num(proxy->vdev, n)) {
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230 | 25db9ebe | Stefan Hajnoczi | continue;
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231 | 25db9ebe | Stefan Hajnoczi | } |
232 | 25db9ebe | Stefan Hajnoczi | |
233 | 26b9b5fe | Paolo Bonzini | r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
234 | b36e3914 | Michael S. Tsirkin | assert(r >= 0);
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235 | 25db9ebe | Stefan Hajnoczi | } |
236 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started = false;
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237 | b36e3914 | Michael S. Tsirkin | error_report("%s: failed. Fallback to a userspace (slower).", __func__);
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238 | 25db9ebe | Stefan Hajnoczi | } |
239 | 25db9ebe | Stefan Hajnoczi | |
240 | b36e3914 | Michael S. Tsirkin | static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
241 | 25db9ebe | Stefan Hajnoczi | { |
242 | b36e3914 | Michael S. Tsirkin | int r;
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243 | 25db9ebe | Stefan Hajnoczi | int n;
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244 | 25db9ebe | Stefan Hajnoczi | |
245 | 25db9ebe | Stefan Hajnoczi | if (!proxy->ioeventfd_started) {
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246 | b36e3914 | Michael S. Tsirkin | return;
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247 | 25db9ebe | Stefan Hajnoczi | } |
248 | 25db9ebe | Stefan Hajnoczi | |
249 | 25db9ebe | Stefan Hajnoczi | for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
250 | 25db9ebe | Stefan Hajnoczi | if (!virtio_queue_get_num(proxy->vdev, n)) {
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251 | 25db9ebe | Stefan Hajnoczi | continue;
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252 | 25db9ebe | Stefan Hajnoczi | } |
253 | 25db9ebe | Stefan Hajnoczi | |
254 | 26b9b5fe | Paolo Bonzini | r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
255 | b36e3914 | Michael S. Tsirkin | assert(r >= 0);
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256 | 25db9ebe | Stefan Hajnoczi | } |
257 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_started = false;
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258 | 25db9ebe | Stefan Hajnoczi | } |
259 | 25db9ebe | Stefan Hajnoczi | |
260 | 60653b28 | Paolo Bonzini | static void virtio_pci_reset(DeviceState *d) |
261 | 7055e687 | Michael S. Tsirkin | { |
262 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
263 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
264 | 7055e687 | Michael S. Tsirkin | virtio_reset(proxy->vdev); |
265 | 3cac001e | Michael S. Tsirkin | msix_unuse_all_vectors(&proxy->pci_dev); |
266 | 25db9ebe | Stefan Hajnoczi | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
267 | 7055e687 | Michael S. Tsirkin | } |
268 | 7055e687 | Michael S. Tsirkin | |
269 | 53c25cea | Paul Brook | static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
270 | 53c25cea | Paul Brook | { |
271 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
272 | 53c25cea | Paul Brook | VirtIODevice *vdev = proxy->vdev; |
273 | a8170e5e | Avi Kivity | hwaddr pa; |
274 | 53c25cea | Paul Brook | |
275 | 53c25cea | Paul Brook | switch (addr) {
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276 | 53c25cea | Paul Brook | case VIRTIO_PCI_GUEST_FEATURES:
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277 | 53c25cea | Paul Brook | /* Guest does not negotiate properly? We have to assume nothing. */
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278 | 53c25cea | Paul Brook | if (val & (1 << VIRTIO_F_BAD_FEATURE)) { |
279 | ad0c9332 | Paolo Bonzini | val = vdev->bad_features ? vdev->bad_features(vdev) : 0;
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280 | 53c25cea | Paul Brook | } |
281 | ad0c9332 | Paolo Bonzini | virtio_set_features(vdev, val); |
282 | 53c25cea | Paul Brook | break;
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283 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_PFN:
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284 | a8170e5e | Avi Kivity | pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
285 | 1b8e9b27 | Michael S. Tsirkin | if (pa == 0) { |
286 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
287 | 1b8e9b27 | Michael S. Tsirkin | virtio_reset(proxy->vdev); |
288 | 1b8e9b27 | Michael S. Tsirkin | msix_unuse_all_vectors(&proxy->pci_dev); |
289 | 1b8e9b27 | Michael S. Tsirkin | } |
290 | 7055e687 | Michael S. Tsirkin | else
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291 | 7055e687 | Michael S. Tsirkin | virtio_queue_set_addr(vdev, vdev->queue_sel, pa); |
292 | 53c25cea | Paul Brook | break;
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293 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_SEL:
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294 | 53c25cea | Paul Brook | if (val < VIRTIO_PCI_QUEUE_MAX)
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295 | 53c25cea | Paul Brook | vdev->queue_sel = val; |
296 | 53c25cea | Paul Brook | break;
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297 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_NOTIFY:
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298 | 7157e2e2 | Stefan Hajnoczi | if (val < VIRTIO_PCI_QUEUE_MAX) {
|
299 | 7157e2e2 | Stefan Hajnoczi | virtio_queue_notify(vdev, val); |
300 | 7157e2e2 | Stefan Hajnoczi | } |
301 | 53c25cea | Paul Brook | break;
|
302 | 53c25cea | Paul Brook | case VIRTIO_PCI_STATUS:
|
303 | 25db9ebe | Stefan Hajnoczi | if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
304 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
305 | 25db9ebe | Stefan Hajnoczi | } |
306 | 25db9ebe | Stefan Hajnoczi | |
307 | 3e607cb5 | Michael S. Tsirkin | virtio_set_status(vdev, val & 0xFF);
|
308 | 25db9ebe | Stefan Hajnoczi | |
309 | 25db9ebe | Stefan Hajnoczi | if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
|
310 | 25db9ebe | Stefan Hajnoczi | virtio_pci_start_ioeventfd(proxy); |
311 | 25db9ebe | Stefan Hajnoczi | } |
312 | 25db9ebe | Stefan Hajnoczi | |
313 | 1b8e9b27 | Michael S. Tsirkin | if (vdev->status == 0) { |
314 | 1b8e9b27 | Michael S. Tsirkin | virtio_reset(proxy->vdev); |
315 | 1b8e9b27 | Michael S. Tsirkin | msix_unuse_all_vectors(&proxy->pci_dev); |
316 | 1b8e9b27 | Michael S. Tsirkin | } |
317 | c81131db | Alexander Graf | |
318 | c81131db | Alexander Graf | /* Linux before 2.6.34 sets the device as OK without enabling
|
319 | c81131db | Alexander Graf | the PCI device bus master bit. In this case we need to disable
|
320 | c81131db | Alexander Graf | some safety checks. */
|
321 | c81131db | Alexander Graf | if ((val & VIRTIO_CONFIG_S_DRIVER_OK) &&
|
322 | c81131db | Alexander Graf | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
323 | 3dbca8e6 | Stefan Hajnoczi | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
324 | c81131db | Alexander Graf | } |
325 | 53c25cea | Paul Brook | break;
|
326 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_CONFIG_VECTOR:
|
327 | aba800a3 | Michael S. Tsirkin | msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); |
328 | aba800a3 | Michael S. Tsirkin | /* Make it possible for guest to discover an error took place. */
|
329 | aba800a3 | Michael S. Tsirkin | if (msix_vector_use(&proxy->pci_dev, val) < 0) |
330 | aba800a3 | Michael S. Tsirkin | val = VIRTIO_NO_VECTOR; |
331 | aba800a3 | Michael S. Tsirkin | vdev->config_vector = val; |
332 | aba800a3 | Michael S. Tsirkin | break;
|
333 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_QUEUE_VECTOR:
|
334 | aba800a3 | Michael S. Tsirkin | msix_vector_unuse(&proxy->pci_dev, |
335 | aba800a3 | Michael S. Tsirkin | virtio_queue_vector(vdev, vdev->queue_sel)); |
336 | aba800a3 | Michael S. Tsirkin | /* Make it possible for guest to discover an error took place. */
|
337 | aba800a3 | Michael S. Tsirkin | if (msix_vector_use(&proxy->pci_dev, val) < 0) |
338 | aba800a3 | Michael S. Tsirkin | val = VIRTIO_NO_VECTOR; |
339 | aba800a3 | Michael S. Tsirkin | virtio_queue_set_vector(vdev, vdev->queue_sel, val); |
340 | aba800a3 | Michael S. Tsirkin | break;
|
341 | aba800a3 | Michael S. Tsirkin | default:
|
342 | 4e02d460 | Stefan Hajnoczi | error_report("%s: unexpected address 0x%x value 0x%x",
|
343 | 4e02d460 | Stefan Hajnoczi | __func__, addr, val); |
344 | aba800a3 | Michael S. Tsirkin | break;
|
345 | 53c25cea | Paul Brook | } |
346 | 53c25cea | Paul Brook | } |
347 | 53c25cea | Paul Brook | |
348 | aba800a3 | Michael S. Tsirkin | static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
|
349 | 53c25cea | Paul Brook | { |
350 | 53c25cea | Paul Brook | VirtIODevice *vdev = proxy->vdev; |
351 | 53c25cea | Paul Brook | uint32_t ret = 0xFFFFFFFF;
|
352 | 53c25cea | Paul Brook | |
353 | 53c25cea | Paul Brook | switch (addr) {
|
354 | 53c25cea | Paul Brook | case VIRTIO_PCI_HOST_FEATURES:
|
355 | 8172539d | Michael S. Tsirkin | ret = proxy->host_features; |
356 | 53c25cea | Paul Brook | break;
|
357 | 53c25cea | Paul Brook | case VIRTIO_PCI_GUEST_FEATURES:
|
358 | 704a76fc | Michael S. Tsirkin | ret = vdev->guest_features; |
359 | 53c25cea | Paul Brook | break;
|
360 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_PFN:
|
361 | 53c25cea | Paul Brook | ret = virtio_queue_get_addr(vdev, vdev->queue_sel) |
362 | 53c25cea | Paul Brook | >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
363 | 53c25cea | Paul Brook | break;
|
364 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_NUM:
|
365 | 53c25cea | Paul Brook | ret = virtio_queue_get_num(vdev, vdev->queue_sel); |
366 | 53c25cea | Paul Brook | break;
|
367 | 53c25cea | Paul Brook | case VIRTIO_PCI_QUEUE_SEL:
|
368 | 53c25cea | Paul Brook | ret = vdev->queue_sel; |
369 | 53c25cea | Paul Brook | break;
|
370 | 53c25cea | Paul Brook | case VIRTIO_PCI_STATUS:
|
371 | 53c25cea | Paul Brook | ret = vdev->status; |
372 | 53c25cea | Paul Brook | break;
|
373 | 53c25cea | Paul Brook | case VIRTIO_PCI_ISR:
|
374 | 53c25cea | Paul Brook | /* reading from the ISR also clears it. */
|
375 | 53c25cea | Paul Brook | ret = vdev->isr; |
376 | 53c25cea | Paul Brook | vdev->isr = 0;
|
377 | 7055e687 | Michael S. Tsirkin | qemu_set_irq(proxy->pci_dev.irq[0], 0); |
378 | 53c25cea | Paul Brook | break;
|
379 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_CONFIG_VECTOR:
|
380 | aba800a3 | Michael S. Tsirkin | ret = vdev->config_vector; |
381 | aba800a3 | Michael S. Tsirkin | break;
|
382 | aba800a3 | Michael S. Tsirkin | case VIRTIO_MSI_QUEUE_VECTOR:
|
383 | aba800a3 | Michael S. Tsirkin | ret = virtio_queue_vector(vdev, vdev->queue_sel); |
384 | aba800a3 | Michael S. Tsirkin | break;
|
385 | 53c25cea | Paul Brook | default:
|
386 | 53c25cea | Paul Brook | break;
|
387 | 53c25cea | Paul Brook | } |
388 | 53c25cea | Paul Brook | |
389 | 53c25cea | Paul Brook | return ret;
|
390 | 53c25cea | Paul Brook | } |
391 | 53c25cea | Paul Brook | |
392 | df6db5b3 | Alexander Graf | static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, |
393 | df6db5b3 | Alexander Graf | unsigned size)
|
394 | 53c25cea | Paul Brook | { |
395 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
396 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
397 | df6db5b3 | Alexander Graf | uint64_t val = 0;
|
398 | aba800a3 | Michael S. Tsirkin | if (addr < config) {
|
399 | df6db5b3 | Alexander Graf | return virtio_ioport_read(proxy, addr);
|
400 | aba800a3 | Michael S. Tsirkin | } |
401 | aba800a3 | Michael S. Tsirkin | addr -= config; |
402 | 53c25cea | Paul Brook | |
403 | df6db5b3 | Alexander Graf | switch (size) {
|
404 | df6db5b3 | Alexander Graf | case 1: |
405 | df6db5b3 | Alexander Graf | val = virtio_config_readb(proxy->vdev, addr); |
406 | df6db5b3 | Alexander Graf | break;
|
407 | df6db5b3 | Alexander Graf | case 2: |
408 | df6db5b3 | Alexander Graf | val = virtio_config_readw(proxy->vdev, addr); |
409 | 8e4a424b | Blue Swirl | if (virtio_is_big_endian()) {
|
410 | 8e4a424b | Blue Swirl | val = bswap16(val); |
411 | 8e4a424b | Blue Swirl | } |
412 | df6db5b3 | Alexander Graf | break;
|
413 | df6db5b3 | Alexander Graf | case 4: |
414 | df6db5b3 | Alexander Graf | val = virtio_config_readl(proxy->vdev, addr); |
415 | 8e4a424b | Blue Swirl | if (virtio_is_big_endian()) {
|
416 | 8e4a424b | Blue Swirl | val = bswap32(val); |
417 | 8e4a424b | Blue Swirl | } |
418 | df6db5b3 | Alexander Graf | break;
|
419 | 82afa586 | Benjamin Herrenschmidt | } |
420 | df6db5b3 | Alexander Graf | return val;
|
421 | 53c25cea | Paul Brook | } |
422 | 53c25cea | Paul Brook | |
423 | df6db5b3 | Alexander Graf | static void virtio_pci_config_write(void *opaque, hwaddr addr, |
424 | df6db5b3 | Alexander Graf | uint64_t val, unsigned size)
|
425 | 53c25cea | Paul Brook | { |
426 | 53c25cea | Paul Brook | VirtIOPCIProxy *proxy = opaque; |
427 | aba800a3 | Michael S. Tsirkin | uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
428 | aba800a3 | Michael S. Tsirkin | if (addr < config) {
|
429 | aba800a3 | Michael S. Tsirkin | virtio_ioport_write(proxy, addr, val); |
430 | aba800a3 | Michael S. Tsirkin | return;
|
431 | aba800a3 | Michael S. Tsirkin | } |
432 | aba800a3 | Michael S. Tsirkin | addr -= config; |
433 | df6db5b3 | Alexander Graf | /*
|
434 | df6db5b3 | Alexander Graf | * Virtio-PCI is odd. Ioports are LE but config space is target native
|
435 | df6db5b3 | Alexander Graf | * endian.
|
436 | df6db5b3 | Alexander Graf | */
|
437 | df6db5b3 | Alexander Graf | switch (size) {
|
438 | df6db5b3 | Alexander Graf | case 1: |
439 | df6db5b3 | Alexander Graf | virtio_config_writeb(proxy->vdev, addr, val); |
440 | df6db5b3 | Alexander Graf | break;
|
441 | df6db5b3 | Alexander Graf | case 2: |
442 | 8e4a424b | Blue Swirl | if (virtio_is_big_endian()) {
|
443 | 8e4a424b | Blue Swirl | val = bswap16(val); |
444 | 8e4a424b | Blue Swirl | } |
445 | df6db5b3 | Alexander Graf | virtio_config_writew(proxy->vdev, addr, val); |
446 | df6db5b3 | Alexander Graf | break;
|
447 | df6db5b3 | Alexander Graf | case 4: |
448 | 8e4a424b | Blue Swirl | if (virtio_is_big_endian()) {
|
449 | 8e4a424b | Blue Swirl | val = bswap32(val); |
450 | 8e4a424b | Blue Swirl | } |
451 | df6db5b3 | Alexander Graf | virtio_config_writel(proxy->vdev, addr, val); |
452 | df6db5b3 | Alexander Graf | break;
|
453 | 82afa586 | Benjamin Herrenschmidt | } |
454 | 53c25cea | Paul Brook | } |
455 | 53c25cea | Paul Brook | |
456 | da146d0a | Avi Kivity | static const MemoryRegionOps virtio_pci_config_ops = { |
457 | df6db5b3 | Alexander Graf | .read = virtio_pci_config_read, |
458 | df6db5b3 | Alexander Graf | .write = virtio_pci_config_write, |
459 | df6db5b3 | Alexander Graf | .impl = { |
460 | df6db5b3 | Alexander Graf | .min_access_size = 1,
|
461 | df6db5b3 | Alexander Graf | .max_access_size = 4,
|
462 | df6db5b3 | Alexander Graf | }, |
463 | 8e4a424b | Blue Swirl | .endianness = DEVICE_LITTLE_ENDIAN, |
464 | da146d0a | Avi Kivity | }; |
465 | aba800a3 | Michael S. Tsirkin | |
466 | aba800a3 | Michael S. Tsirkin | static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, |
467 | aba800a3 | Michael S. Tsirkin | uint32_t val, int len)
|
468 | aba800a3 | Michael S. Tsirkin | { |
469 | ed757e14 | Yan Vugenfirer | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
470 | ed757e14 | Yan Vugenfirer | |
471 | 1129714f | Michael S. Tsirkin | pci_default_write_config(pci_dev, address, val, len); |
472 | 1129714f | Michael S. Tsirkin | |
473 | 1129714f | Michael S. Tsirkin | if (range_covers_byte(address, len, PCI_COMMAND) &&
|
474 | 1129714f | Michael S. Tsirkin | !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && |
475 | 1129714f | Michael S. Tsirkin | !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { |
476 | 1129714f | Michael S. Tsirkin | virtio_pci_stop_ioeventfd(proxy); |
477 | 1129714f | Michael S. Tsirkin | virtio_set_status(proxy->vdev, |
478 | 1129714f | Michael S. Tsirkin | proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); |
479 | ed757e14 | Yan Vugenfirer | } |
480 | 53c25cea | Paul Brook | } |
481 | 53c25cea | Paul Brook | |
482 | d2a0ccc6 | Michael S. Tsirkin | static unsigned virtio_pci_get_features(DeviceState *d) |
483 | 6d74ca5a | Michael S. Tsirkin | { |
484 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
485 | 8172539d | Michael S. Tsirkin | return proxy->host_features;
|
486 | 6d74ca5a | Michael S. Tsirkin | } |
487 | 6d74ca5a | Michael S. Tsirkin | |
488 | 7d37d351 | Jan Kiszka | static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, |
489 | 7d37d351 | Jan Kiszka | unsigned int queue_no, |
490 | 7d37d351 | Jan Kiszka | unsigned int vector, |
491 | 7d37d351 | Jan Kiszka | MSIMessage msg) |
492 | 7d37d351 | Jan Kiszka | { |
493 | 7d37d351 | Jan Kiszka | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
494 | 15b2bd18 | Paolo Bonzini | int ret;
|
495 | 7d37d351 | Jan Kiszka | |
496 | 7d37d351 | Jan Kiszka | if (irqfd->users == 0) { |
497 | 7d37d351 | Jan Kiszka | ret = kvm_irqchip_add_msi_route(kvm_state, msg); |
498 | 7d37d351 | Jan Kiszka | if (ret < 0) { |
499 | 7d37d351 | Jan Kiszka | return ret;
|
500 | 7d37d351 | Jan Kiszka | } |
501 | 7d37d351 | Jan Kiszka | irqfd->virq = ret; |
502 | 7d37d351 | Jan Kiszka | } |
503 | 7d37d351 | Jan Kiszka | irqfd->users++; |
504 | 7d37d351 | Jan Kiszka | return 0; |
505 | 7d37d351 | Jan Kiszka | } |
506 | 7d37d351 | Jan Kiszka | |
507 | 7d37d351 | Jan Kiszka | static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, |
508 | 7d37d351 | Jan Kiszka | unsigned int vector) |
509 | 7d37d351 | Jan Kiszka | { |
510 | 774345f9 | Michael S. Tsirkin | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
511 | 774345f9 | Michael S. Tsirkin | if (--irqfd->users == 0) { |
512 | 774345f9 | Michael S. Tsirkin | kvm_irqchip_release_virq(kvm_state, irqfd->virq); |
513 | 774345f9 | Michael S. Tsirkin | } |
514 | 774345f9 | Michael S. Tsirkin | } |
515 | 774345f9 | Michael S. Tsirkin | |
516 | f1d0f15a | Michael S. Tsirkin | static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy, |
517 | f1d0f15a | Michael S. Tsirkin | unsigned int queue_no, |
518 | f1d0f15a | Michael S. Tsirkin | unsigned int vector) |
519 | f1d0f15a | Michael S. Tsirkin | { |
520 | f1d0f15a | Michael S. Tsirkin | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
521 | f1d0f15a | Michael S. Tsirkin | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
522 | f1d0f15a | Michael S. Tsirkin | EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
523 | f1d0f15a | Michael S. Tsirkin | int ret;
|
524 | f1d0f15a | Michael S. Tsirkin | ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, irqfd->virq); |
525 | f1d0f15a | Michael S. Tsirkin | return ret;
|
526 | f1d0f15a | Michael S. Tsirkin | } |
527 | f1d0f15a | Michael S. Tsirkin | |
528 | f1d0f15a | Michael S. Tsirkin | static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy, |
529 | f1d0f15a | Michael S. Tsirkin | unsigned int queue_no, |
530 | f1d0f15a | Michael S. Tsirkin | unsigned int vector) |
531 | f1d0f15a | Michael S. Tsirkin | { |
532 | 7d37d351 | Jan Kiszka | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
533 | 15b2bd18 | Paolo Bonzini | EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
534 | 7d37d351 | Jan Kiszka | VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
535 | 15b2bd18 | Paolo Bonzini | int ret;
|
536 | 7d37d351 | Jan Kiszka | |
537 | b131c74a | Jan Kiszka | ret = kvm_irqchip_remove_irqfd_notifier(kvm_state, n, irqfd->virq); |
538 | 7d37d351 | Jan Kiszka | assert(ret == 0);
|
539 | f1d0f15a | Michael S. Tsirkin | } |
540 | 7d37d351 | Jan Kiszka | |
541 | 774345f9 | Michael S. Tsirkin | static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs) |
542 | 774345f9 | Michael S. Tsirkin | { |
543 | 774345f9 | Michael S. Tsirkin | PCIDevice *dev = &proxy->pci_dev; |
544 | 774345f9 | Michael S. Tsirkin | VirtIODevice *vdev = proxy->vdev; |
545 | 774345f9 | Michael S. Tsirkin | unsigned int vector; |
546 | 774345f9 | Michael S. Tsirkin | int ret, queue_no;
|
547 | 774345f9 | Michael S. Tsirkin | MSIMessage msg; |
548 | 774345f9 | Michael S. Tsirkin | |
549 | 774345f9 | Michael S. Tsirkin | for (queue_no = 0; queue_no < nvqs; queue_no++) { |
550 | 774345f9 | Michael S. Tsirkin | if (!virtio_queue_get_num(vdev, queue_no)) {
|
551 | 774345f9 | Michael S. Tsirkin | break;
|
552 | 774345f9 | Michael S. Tsirkin | } |
553 | 774345f9 | Michael S. Tsirkin | vector = virtio_queue_vector(vdev, queue_no); |
554 | 774345f9 | Michael S. Tsirkin | if (vector >= msix_nr_vectors_allocated(dev)) {
|
555 | 774345f9 | Michael S. Tsirkin | continue;
|
556 | 774345f9 | Michael S. Tsirkin | } |
557 | 774345f9 | Michael S. Tsirkin | msg = msix_get_message(dev, vector); |
558 | 774345f9 | Michael S. Tsirkin | ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); |
559 | 774345f9 | Michael S. Tsirkin | if (ret < 0) { |
560 | 774345f9 | Michael S. Tsirkin | goto undo;
|
561 | 7d37d351 | Jan Kiszka | } |
562 | f1d0f15a | Michael S. Tsirkin | /* If guest supports masking, set up irqfd now.
|
563 | f1d0f15a | Michael S. Tsirkin | * Otherwise, delay until unmasked in the frontend.
|
564 | f1d0f15a | Michael S. Tsirkin | */
|
565 | f1d0f15a | Michael S. Tsirkin | if (proxy->vdev->guest_notifier_mask) {
|
566 | f1d0f15a | Michael S. Tsirkin | ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); |
567 | f1d0f15a | Michael S. Tsirkin | if (ret < 0) { |
568 | f1d0f15a | Michael S. Tsirkin | kvm_virtio_pci_vq_vector_release(proxy, vector); |
569 | f1d0f15a | Michael S. Tsirkin | goto undo;
|
570 | f1d0f15a | Michael S. Tsirkin | } |
571 | f1d0f15a | Michael S. Tsirkin | } |
572 | 7d37d351 | Jan Kiszka | } |
573 | 7d37d351 | Jan Kiszka | return 0; |
574 | 774345f9 | Michael S. Tsirkin | |
575 | 774345f9 | Michael S. Tsirkin | undo:
|
576 | 774345f9 | Michael S. Tsirkin | while (--queue_no >= 0) { |
577 | 774345f9 | Michael S. Tsirkin | vector = virtio_queue_vector(vdev, queue_no); |
578 | 774345f9 | Michael S. Tsirkin | if (vector >= msix_nr_vectors_allocated(dev)) {
|
579 | 774345f9 | Michael S. Tsirkin | continue;
|
580 | 774345f9 | Michael S. Tsirkin | } |
581 | f1d0f15a | Michael S. Tsirkin | if (proxy->vdev->guest_notifier_mask) {
|
582 | e387f99e | Michael S. Tsirkin | kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
583 | f1d0f15a | Michael S. Tsirkin | } |
584 | 774345f9 | Michael S. Tsirkin | kvm_virtio_pci_vq_vector_release(proxy, vector); |
585 | 774345f9 | Michael S. Tsirkin | } |
586 | 774345f9 | Michael S. Tsirkin | return ret;
|
587 | 7d37d351 | Jan Kiszka | } |
588 | 7d37d351 | Jan Kiszka | |
589 | 774345f9 | Michael S. Tsirkin | static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs) |
590 | 774345f9 | Michael S. Tsirkin | { |
591 | 774345f9 | Michael S. Tsirkin | PCIDevice *dev = &proxy->pci_dev; |
592 | 774345f9 | Michael S. Tsirkin | VirtIODevice *vdev = proxy->vdev; |
593 | 774345f9 | Michael S. Tsirkin | unsigned int vector; |
594 | 774345f9 | Michael S. Tsirkin | int queue_no;
|
595 | 774345f9 | Michael S. Tsirkin | |
596 | 774345f9 | Michael S. Tsirkin | for (queue_no = 0; queue_no < nvqs; queue_no++) { |
597 | 774345f9 | Michael S. Tsirkin | if (!virtio_queue_get_num(vdev, queue_no)) {
|
598 | 774345f9 | Michael S. Tsirkin | break;
|
599 | 774345f9 | Michael S. Tsirkin | } |
600 | 774345f9 | Michael S. Tsirkin | vector = virtio_queue_vector(vdev, queue_no); |
601 | 774345f9 | Michael S. Tsirkin | if (vector >= msix_nr_vectors_allocated(dev)) {
|
602 | 774345f9 | Michael S. Tsirkin | continue;
|
603 | 774345f9 | Michael S. Tsirkin | } |
604 | f1d0f15a | Michael S. Tsirkin | /* If guest supports masking, clean up irqfd now.
|
605 | f1d0f15a | Michael S. Tsirkin | * Otherwise, it was cleaned when masked in the frontend.
|
606 | f1d0f15a | Michael S. Tsirkin | */
|
607 | f1d0f15a | Michael S. Tsirkin | if (proxy->vdev->guest_notifier_mask) {
|
608 | e387f99e | Michael S. Tsirkin | kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
609 | f1d0f15a | Michael S. Tsirkin | } |
610 | 774345f9 | Michael S. Tsirkin | kvm_virtio_pci_vq_vector_release(proxy, vector); |
611 | 774345f9 | Michael S. Tsirkin | } |
612 | 774345f9 | Michael S. Tsirkin | } |
613 | 774345f9 | Michael S. Tsirkin | |
614 | a38b2c49 | Michael S. Tsirkin | static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy, |
615 | a38b2c49 | Michael S. Tsirkin | unsigned int queue_no, |
616 | a38b2c49 | Michael S. Tsirkin | unsigned int vector, |
617 | a38b2c49 | Michael S. Tsirkin | MSIMessage msg) |
618 | 774345f9 | Michael S. Tsirkin | { |
619 | 774345f9 | Michael S. Tsirkin | VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
620 | 774345f9 | Michael S. Tsirkin | EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
621 | a38b2c49 | Michael S. Tsirkin | VirtIOIRQFD *irqfd; |
622 | 53510bfc | Michael Roth | int ret = 0; |
623 | 774345f9 | Michael S. Tsirkin | |
624 | a38b2c49 | Michael S. Tsirkin | if (proxy->vector_irqfd) {
|
625 | a38b2c49 | Michael S. Tsirkin | irqfd = &proxy->vector_irqfd[vector]; |
626 | a38b2c49 | Michael S. Tsirkin | if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) {
|
627 | a38b2c49 | Michael S. Tsirkin | ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg); |
628 | a38b2c49 | Michael S. Tsirkin | if (ret < 0) { |
629 | a38b2c49 | Michael S. Tsirkin | return ret;
|
630 | a38b2c49 | Michael S. Tsirkin | } |
631 | 774345f9 | Michael S. Tsirkin | } |
632 | 774345f9 | Michael S. Tsirkin | } |
633 | 774345f9 | Michael S. Tsirkin | |
634 | f1d0f15a | Michael S. Tsirkin | /* If guest supports masking, irqfd is already setup, unmask it.
|
635 | f1d0f15a | Michael S. Tsirkin | * Otherwise, set it up now.
|
636 | f1d0f15a | Michael S. Tsirkin | */
|
637 | f1d0f15a | Michael S. Tsirkin | if (proxy->vdev->guest_notifier_mask) {
|
638 | f1d0f15a | Michael S. Tsirkin | proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, false);
|
639 | f1d0f15a | Michael S. Tsirkin | /* Test after unmasking to avoid losing events. */
|
640 | f1d0f15a | Michael S. Tsirkin | if (proxy->vdev->guest_notifier_pending &&
|
641 | f1d0f15a | Michael S. Tsirkin | proxy->vdev->guest_notifier_pending(proxy->vdev, queue_no)) { |
642 | f1d0f15a | Michael S. Tsirkin | event_notifier_set(n); |
643 | f1d0f15a | Michael S. Tsirkin | } |
644 | f1d0f15a | Michael S. Tsirkin | } else {
|
645 | f1d0f15a | Michael S. Tsirkin | ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); |
646 | 7d37d351 | Jan Kiszka | } |
647 | 774345f9 | Michael S. Tsirkin | return ret;
|
648 | 7d37d351 | Jan Kiszka | } |
649 | 7d37d351 | Jan Kiszka | |
650 | a38b2c49 | Michael S. Tsirkin | static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy, |
651 | 7d37d351 | Jan Kiszka | unsigned int queue_no, |
652 | 7d37d351 | Jan Kiszka | unsigned int vector) |
653 | 7d37d351 | Jan Kiszka | { |
654 | f1d0f15a | Michael S. Tsirkin | /* If guest supports masking, keep irqfd but mask it.
|
655 | f1d0f15a | Michael S. Tsirkin | * Otherwise, clean it up now.
|
656 | f1d0f15a | Michael S. Tsirkin | */
|
657 | f1d0f15a | Michael S. Tsirkin | if (proxy->vdev->guest_notifier_mask) {
|
658 | f1d0f15a | Michael S. Tsirkin | proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, true);
|
659 | f1d0f15a | Michael S. Tsirkin | } else {
|
660 | e387f99e | Michael S. Tsirkin | kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
661 | f1d0f15a | Michael S. Tsirkin | } |
662 | 7d37d351 | Jan Kiszka | } |
663 | 7d37d351 | Jan Kiszka | |
664 | a38b2c49 | Michael S. Tsirkin | static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector, |
665 | a38b2c49 | Michael S. Tsirkin | MSIMessage msg) |
666 | 7d37d351 | Jan Kiszka | { |
667 | 7d37d351 | Jan Kiszka | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
668 | 7d37d351 | Jan Kiszka | VirtIODevice *vdev = proxy->vdev; |
669 | 7d37d351 | Jan Kiszka | int ret, queue_no;
|
670 | 7d37d351 | Jan Kiszka | |
671 | 2d620f59 | Michael S. Tsirkin | for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
672 | 7d37d351 | Jan Kiszka | if (!virtio_queue_get_num(vdev, queue_no)) {
|
673 | 7d37d351 | Jan Kiszka | break;
|
674 | 7d37d351 | Jan Kiszka | } |
675 | 7d37d351 | Jan Kiszka | if (virtio_queue_vector(vdev, queue_no) != vector) {
|
676 | 7d37d351 | Jan Kiszka | continue;
|
677 | 7d37d351 | Jan Kiszka | } |
678 | a38b2c49 | Michael S. Tsirkin | ret = virtio_pci_vq_vector_unmask(proxy, queue_no, vector, msg); |
679 | 7d37d351 | Jan Kiszka | if (ret < 0) { |
680 | 7d37d351 | Jan Kiszka | goto undo;
|
681 | 7d37d351 | Jan Kiszka | } |
682 | 7d37d351 | Jan Kiszka | } |
683 | 7d37d351 | Jan Kiszka | return 0; |
684 | 7d37d351 | Jan Kiszka | |
685 | 7d37d351 | Jan Kiszka | undo:
|
686 | 7d37d351 | Jan Kiszka | while (--queue_no >= 0) { |
687 | 7d37d351 | Jan Kiszka | if (virtio_queue_vector(vdev, queue_no) != vector) {
|
688 | 7d37d351 | Jan Kiszka | continue;
|
689 | 7d37d351 | Jan Kiszka | } |
690 | a38b2c49 | Michael S. Tsirkin | virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
691 | 7d37d351 | Jan Kiszka | } |
692 | 7d37d351 | Jan Kiszka | return ret;
|
693 | 7d37d351 | Jan Kiszka | } |
694 | 7d37d351 | Jan Kiszka | |
695 | a38b2c49 | Michael S. Tsirkin | static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector) |
696 | 7d37d351 | Jan Kiszka | { |
697 | 7d37d351 | Jan Kiszka | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
698 | 7d37d351 | Jan Kiszka | VirtIODevice *vdev = proxy->vdev; |
699 | 7d37d351 | Jan Kiszka | int queue_no;
|
700 | 7d37d351 | Jan Kiszka | |
701 | 2d620f59 | Michael S. Tsirkin | for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
702 | 7d37d351 | Jan Kiszka | if (!virtio_queue_get_num(vdev, queue_no)) {
|
703 | 7d37d351 | Jan Kiszka | break;
|
704 | 7d37d351 | Jan Kiszka | } |
705 | 7d37d351 | Jan Kiszka | if (virtio_queue_vector(vdev, queue_no) != vector) {
|
706 | 7d37d351 | Jan Kiszka | continue;
|
707 | 7d37d351 | Jan Kiszka | } |
708 | a38b2c49 | Michael S. Tsirkin | virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
709 | 7d37d351 | Jan Kiszka | } |
710 | 7d37d351 | Jan Kiszka | } |
711 | 7d37d351 | Jan Kiszka | |
712 | a38b2c49 | Michael S. Tsirkin | static void virtio_pci_vector_poll(PCIDevice *dev, |
713 | a38b2c49 | Michael S. Tsirkin | unsigned int vector_start, |
714 | a38b2c49 | Michael S. Tsirkin | unsigned int vector_end) |
715 | 89d62be9 | Michael S. Tsirkin | { |
716 | 89d62be9 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
717 | 89d62be9 | Michael S. Tsirkin | VirtIODevice *vdev = proxy->vdev; |
718 | 89d62be9 | Michael S. Tsirkin | int queue_no;
|
719 | 89d62be9 | Michael S. Tsirkin | unsigned int vector; |
720 | 89d62be9 | Michael S. Tsirkin | EventNotifier *notifier; |
721 | 89d62be9 | Michael S. Tsirkin | VirtQueue *vq; |
722 | 89d62be9 | Michael S. Tsirkin | |
723 | 2d620f59 | Michael S. Tsirkin | for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
724 | 89d62be9 | Michael S. Tsirkin | if (!virtio_queue_get_num(vdev, queue_no)) {
|
725 | 89d62be9 | Michael S. Tsirkin | break;
|
726 | 89d62be9 | Michael S. Tsirkin | } |
727 | 89d62be9 | Michael S. Tsirkin | vector = virtio_queue_vector(vdev, queue_no); |
728 | 89d62be9 | Michael S. Tsirkin | if (vector < vector_start || vector >= vector_end ||
|
729 | 89d62be9 | Michael S. Tsirkin | !msix_is_masked(dev, vector)) { |
730 | 89d62be9 | Michael S. Tsirkin | continue;
|
731 | 89d62be9 | Michael S. Tsirkin | } |
732 | 89d62be9 | Michael S. Tsirkin | vq = virtio_get_queue(vdev, queue_no); |
733 | 89d62be9 | Michael S. Tsirkin | notifier = virtio_queue_get_guest_notifier(vq); |
734 | f1d0f15a | Michael S. Tsirkin | if (vdev->guest_notifier_pending) {
|
735 | f1d0f15a | Michael S. Tsirkin | if (vdev->guest_notifier_pending(vdev, queue_no)) {
|
736 | f1d0f15a | Michael S. Tsirkin | msix_set_pending(dev, vector); |
737 | f1d0f15a | Michael S. Tsirkin | } |
738 | f1d0f15a | Michael S. Tsirkin | } else if (event_notifier_test_and_clear(notifier)) { |
739 | 89d62be9 | Michael S. Tsirkin | msix_set_pending(dev, vector); |
740 | 89d62be9 | Michael S. Tsirkin | } |
741 | 89d62be9 | Michael S. Tsirkin | } |
742 | 89d62be9 | Michael S. Tsirkin | } |
743 | 89d62be9 | Michael S. Tsirkin | |
744 | 89d62be9 | Michael S. Tsirkin | static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign, |
745 | 89d62be9 | Michael S. Tsirkin | bool with_irqfd)
|
746 | ade80dc8 | Michael S. Tsirkin | { |
747 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
748 | ade80dc8 | Michael S. Tsirkin | VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
749 | ade80dc8 | Michael S. Tsirkin | EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
750 | ade80dc8 | Michael S. Tsirkin | |
751 | ade80dc8 | Michael S. Tsirkin | if (assign) {
|
752 | ade80dc8 | Michael S. Tsirkin | int r = event_notifier_init(notifier, 0); |
753 | ade80dc8 | Michael S. Tsirkin | if (r < 0) { |
754 | ade80dc8 | Michael S. Tsirkin | return r;
|
755 | ade80dc8 | Michael S. Tsirkin | } |
756 | 89d62be9 | Michael S. Tsirkin | virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
|
757 | ade80dc8 | Michael S. Tsirkin | } else {
|
758 | 89d62be9 | Michael S. Tsirkin | virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
|
759 | ade80dc8 | Michael S. Tsirkin | event_notifier_cleanup(notifier); |
760 | ade80dc8 | Michael S. Tsirkin | } |
761 | ade80dc8 | Michael S. Tsirkin | |
762 | ade80dc8 | Michael S. Tsirkin | return 0; |
763 | ade80dc8 | Michael S. Tsirkin | } |
764 | ade80dc8 | Michael S. Tsirkin | |
765 | d2a0ccc6 | Michael S. Tsirkin | static bool virtio_pci_query_guest_notifiers(DeviceState *d) |
766 | 5430a28f | mst@redhat.com | { |
767 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
768 | 5430a28f | mst@redhat.com | return msix_enabled(&proxy->pci_dev);
|
769 | 5430a28f | mst@redhat.com | } |
770 | 5430a28f | mst@redhat.com | |
771 | 2d620f59 | Michael S. Tsirkin | static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) |
772 | 54dd9321 | Michael S. Tsirkin | { |
773 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
774 | 54dd9321 | Michael S. Tsirkin | VirtIODevice *vdev = proxy->vdev; |
775 | 54dd9321 | Michael S. Tsirkin | int r, n;
|
776 | 89d62be9 | Michael S. Tsirkin | bool with_irqfd = msix_enabled(&proxy->pci_dev) &&
|
777 | 89d62be9 | Michael S. Tsirkin | kvm_msi_via_irqfd_enabled(); |
778 | 54dd9321 | Michael S. Tsirkin | |
779 | 2d620f59 | Michael S. Tsirkin | nvqs = MIN(nvqs, VIRTIO_PCI_QUEUE_MAX); |
780 | 2d620f59 | Michael S. Tsirkin | |
781 | 2d620f59 | Michael S. Tsirkin | /* When deassigning, pass a consistent nvqs value
|
782 | 2d620f59 | Michael S. Tsirkin | * to avoid leaking notifiers.
|
783 | 2d620f59 | Michael S. Tsirkin | */
|
784 | 2d620f59 | Michael S. Tsirkin | assert(assign || nvqs == proxy->nvqs_with_notifiers); |
785 | 2d620f59 | Michael S. Tsirkin | |
786 | 2d620f59 | Michael S. Tsirkin | proxy->nvqs_with_notifiers = nvqs; |
787 | 2d620f59 | Michael S. Tsirkin | |
788 | 7d37d351 | Jan Kiszka | /* Must unset vector notifier while guest notifier is still assigned */
|
789 | a38b2c49 | Michael S. Tsirkin | if ((proxy->vector_irqfd || vdev->guest_notifier_mask) && !assign) {
|
790 | 7d37d351 | Jan Kiszka | msix_unset_vector_notifiers(&proxy->pci_dev); |
791 | a38b2c49 | Michael S. Tsirkin | if (proxy->vector_irqfd) {
|
792 | a38b2c49 | Michael S. Tsirkin | kvm_virtio_pci_vector_release(proxy, nvqs); |
793 | a38b2c49 | Michael S. Tsirkin | g_free(proxy->vector_irqfd); |
794 | a38b2c49 | Michael S. Tsirkin | proxy->vector_irqfd = NULL;
|
795 | a38b2c49 | Michael S. Tsirkin | } |
796 | 7d37d351 | Jan Kiszka | } |
797 | 7d37d351 | Jan Kiszka | |
798 | 2d620f59 | Michael S. Tsirkin | for (n = 0; n < nvqs; n++) { |
799 | 54dd9321 | Michael S. Tsirkin | if (!virtio_queue_get_num(vdev, n)) {
|
800 | 54dd9321 | Michael S. Tsirkin | break;
|
801 | 54dd9321 | Michael S. Tsirkin | } |
802 | 54dd9321 | Michael S. Tsirkin | |
803 | 89d62be9 | Michael S. Tsirkin | r = virtio_pci_set_guest_notifier(d, n, assign, |
804 | 89d62be9 | Michael S. Tsirkin | kvm_msi_via_irqfd_enabled()); |
805 | 54dd9321 | Michael S. Tsirkin | if (r < 0) { |
806 | 54dd9321 | Michael S. Tsirkin | goto assign_error;
|
807 | 54dd9321 | Michael S. Tsirkin | } |
808 | 54dd9321 | Michael S. Tsirkin | } |
809 | 54dd9321 | Michael S. Tsirkin | |
810 | 7d37d351 | Jan Kiszka | /* Must set vector notifier after guest notifier has been assigned */
|
811 | a38b2c49 | Michael S. Tsirkin | if ((with_irqfd || vdev->guest_notifier_mask) && assign) {
|
812 | a38b2c49 | Michael S. Tsirkin | if (with_irqfd) {
|
813 | a38b2c49 | Michael S. Tsirkin | proxy->vector_irqfd = |
814 | a38b2c49 | Michael S. Tsirkin | g_malloc0(sizeof(*proxy->vector_irqfd) *
|
815 | a38b2c49 | Michael S. Tsirkin | msix_nr_vectors_allocated(&proxy->pci_dev)); |
816 | a38b2c49 | Michael S. Tsirkin | r = kvm_virtio_pci_vector_use(proxy, nvqs); |
817 | a38b2c49 | Michael S. Tsirkin | if (r < 0) { |
818 | a38b2c49 | Michael S. Tsirkin | goto assign_error;
|
819 | a38b2c49 | Michael S. Tsirkin | } |
820 | 774345f9 | Michael S. Tsirkin | } |
821 | 7d37d351 | Jan Kiszka | r = msix_set_vector_notifiers(&proxy->pci_dev, |
822 | a38b2c49 | Michael S. Tsirkin | virtio_pci_vector_unmask, |
823 | a38b2c49 | Michael S. Tsirkin | virtio_pci_vector_mask, |
824 | a38b2c49 | Michael S. Tsirkin | virtio_pci_vector_poll); |
825 | 7d37d351 | Jan Kiszka | if (r < 0) { |
826 | 774345f9 | Michael S. Tsirkin | goto notifiers_error;
|
827 | 7d37d351 | Jan Kiszka | } |
828 | 7d37d351 | Jan Kiszka | } |
829 | 7d37d351 | Jan Kiszka | |
830 | 54dd9321 | Michael S. Tsirkin | return 0; |
831 | 54dd9321 | Michael S. Tsirkin | |
832 | 774345f9 | Michael S. Tsirkin | notifiers_error:
|
833 | a38b2c49 | Michael S. Tsirkin | if (with_irqfd) {
|
834 | a38b2c49 | Michael S. Tsirkin | assert(assign); |
835 | a38b2c49 | Michael S. Tsirkin | kvm_virtio_pci_vector_release(proxy, nvqs); |
836 | a38b2c49 | Michael S. Tsirkin | } |
837 | 774345f9 | Michael S. Tsirkin | |
838 | 54dd9321 | Michael S. Tsirkin | assign_error:
|
839 | 54dd9321 | Michael S. Tsirkin | /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
|
840 | 7d37d351 | Jan Kiszka | assert(assign); |
841 | 54dd9321 | Michael S. Tsirkin | while (--n >= 0) { |
842 | 89d62be9 | Michael S. Tsirkin | virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd); |
843 | 54dd9321 | Michael S. Tsirkin | } |
844 | 54dd9321 | Michael S. Tsirkin | return r;
|
845 | 54dd9321 | Michael S. Tsirkin | } |
846 | 54dd9321 | Michael S. Tsirkin | |
847 | d2a0ccc6 | Michael S. Tsirkin | static int virtio_pci_set_host_notifier(DeviceState *d, int n, bool assign) |
848 | ade80dc8 | Michael S. Tsirkin | { |
849 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
850 | 25db9ebe | Stefan Hajnoczi | |
851 | 25db9ebe | Stefan Hajnoczi | /* Stop using ioeventfd for virtqueue kick if the device starts using host
|
852 | 25db9ebe | Stefan Hajnoczi | * notifiers. This makes it easy to avoid stepping on each others' toes.
|
853 | 25db9ebe | Stefan Hajnoczi | */
|
854 | 25db9ebe | Stefan Hajnoczi | proxy->ioeventfd_disabled = assign; |
855 | ade80dc8 | Michael S. Tsirkin | if (assign) {
|
856 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
857 | 25db9ebe | Stefan Hajnoczi | } |
858 | 25db9ebe | Stefan Hajnoczi | /* We don't need to start here: it's not needed because backend
|
859 | 25db9ebe | Stefan Hajnoczi | * currently only stops on status change away from ok,
|
860 | 25db9ebe | Stefan Hajnoczi | * reset, vmstop and such. If we do add code to start here,
|
861 | 25db9ebe | Stefan Hajnoczi | * need to check vmstate, device state etc. */
|
862 | 26b9b5fe | Paolo Bonzini | return virtio_pci_set_host_notifier_internal(proxy, n, assign, false); |
863 | 25db9ebe | Stefan Hajnoczi | } |
864 | 25db9ebe | Stefan Hajnoczi | |
865 | d2a0ccc6 | Michael S. Tsirkin | static void virtio_pci_vmstate_change(DeviceState *d, bool running) |
866 | 25db9ebe | Stefan Hajnoczi | { |
867 | d2a0ccc6 | Michael S. Tsirkin | VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
868 | 25db9ebe | Stefan Hajnoczi | |
869 | 25db9ebe | Stefan Hajnoczi | if (running) {
|
870 | 89c473fd | Michael S. Tsirkin | /* Try to find out if the guest has bus master disabled, but is
|
871 | 89c473fd | Michael S. Tsirkin | in ready state. Then we have a buggy guest OS. */
|
872 | 89c473fd | Michael S. Tsirkin | if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
|
873 | 89c473fd | Michael S. Tsirkin | !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
874 | 89c473fd | Michael S. Tsirkin | proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
875 | 89c473fd | Michael S. Tsirkin | } |
876 | 25db9ebe | Stefan Hajnoczi | virtio_pci_start_ioeventfd(proxy); |
877 | ade80dc8 | Michael S. Tsirkin | } else {
|
878 | 25db9ebe | Stefan Hajnoczi | virtio_pci_stop_ioeventfd(proxy); |
879 | ade80dc8 | Michael S. Tsirkin | } |
880 | ade80dc8 | Michael S. Tsirkin | } |
881 | ade80dc8 | Michael S. Tsirkin | |
882 | 53c25cea | Paul Brook | static const VirtIOBindings virtio_pci_bindings = { |
883 | ff24bd58 | Michael S. Tsirkin | .notify = virtio_pci_notify, |
884 | ff24bd58 | Michael S. Tsirkin | .save_config = virtio_pci_save_config, |
885 | ff24bd58 | Michael S. Tsirkin | .load_config = virtio_pci_load_config, |
886 | ff24bd58 | Michael S. Tsirkin | .save_queue = virtio_pci_save_queue, |
887 | ff24bd58 | Michael S. Tsirkin | .load_queue = virtio_pci_load_queue, |
888 | 6d74ca5a | Michael S. Tsirkin | .get_features = virtio_pci_get_features, |
889 | 5430a28f | mst@redhat.com | .query_guest_notifiers = virtio_pci_query_guest_notifiers, |
890 | ade80dc8 | Michael S. Tsirkin | .set_host_notifier = virtio_pci_set_host_notifier, |
891 | 54dd9321 | Michael S. Tsirkin | .set_guest_notifiers = virtio_pci_set_guest_notifiers, |
892 | 25db9ebe | Stefan Hajnoczi | .vmstate_change = virtio_pci_vmstate_change, |
893 | 53c25cea | Paul Brook | }; |
894 | 53c25cea | Paul Brook | |
895 | befeac45 | Michael S. Tsirkin | void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
|
896 | 53c25cea | Paul Brook | { |
897 | 53c25cea | Paul Brook | uint8_t *config; |
898 | 53c25cea | Paul Brook | uint32_t size; |
899 | 53c25cea | Paul Brook | |
900 | 53c25cea | Paul Brook | proxy->vdev = vdev; |
901 | 53c25cea | Paul Brook | |
902 | 53c25cea | Paul Brook | config = proxy->pci_dev.config; |
903 | 53c25cea | Paul Brook | |
904 | e75ccf2c | Isaku Yamahata | if (proxy->class_code) {
|
905 | e75ccf2c | Isaku Yamahata | pci_config_set_class(config, proxy->class_code); |
906 | e75ccf2c | Isaku Yamahata | } |
907 | ad3d11e6 | Hui Kai Ran | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
908 | ad3d11e6 | Hui Kai Ran | pci_get_word(config + PCI_VENDOR_ID)); |
909 | ad3d11e6 | Hui Kai Ran | pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); |
910 | ad3d11e6 | Hui Kai Ran | config[PCI_INTERRUPT_PIN] = 1;
|
911 | 53c25cea | Paul Brook | |
912 | b2357c48 | Alex Williamson | if (vdev->nvectors &&
|
913 | b2357c48 | Alex Williamson | msix_init_exclusive_bar(&proxy->pci_dev, vdev->nvectors, 1)) {
|
914 | aba800a3 | Michael S. Tsirkin | vdev->nvectors = 0;
|
915 | b2357c48 | Alex Williamson | } |
916 | aba800a3 | Michael S. Tsirkin | |
917 | ed757e14 | Yan Vugenfirer | proxy->pci_dev.config_write = virtio_write_config; |
918 | ed757e14 | Yan Vugenfirer | |
919 | aba800a3 | Michael S. Tsirkin | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
920 | 53c25cea | Paul Brook | if (size & (size-1)) |
921 | 53c25cea | Paul Brook | size = 1 << qemu_fls(size);
|
922 | 53c25cea | Paul Brook | |
923 | da146d0a | Avi Kivity | memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
924 | da146d0a | Avi Kivity | "virtio-pci", size);
|
925 | e824b2cc | Avi Kivity | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
926 | e824b2cc | Avi Kivity | &proxy->bar); |
927 | 53c25cea | Paul Brook | |
928 | 25db9ebe | Stefan Hajnoczi | if (!kvm_has_many_ioeventfds()) {
|
929 | 25db9ebe | Stefan Hajnoczi | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
930 | 25db9ebe | Stefan Hajnoczi | } |
931 | 25db9ebe | Stefan Hajnoczi | |
932 | d2a0ccc6 | Michael S. Tsirkin | virtio_bind_device(vdev, &virtio_pci_bindings, DEVICE(proxy)); |
933 | 8172539d | Michael S. Tsirkin | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
934 | 8172539d | Michael S. Tsirkin | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
935 | 8172539d | Michael S. Tsirkin | proxy->host_features = vdev->get_features(vdev, proxy->host_features); |
936 | 53c25cea | Paul Brook | } |
937 | 53c25cea | Paul Brook | |
938 | f90c2bcd | Alex Williamson | static void virtio_exit_pci(PCIDevice *pci_dev) |
939 | 0f457d91 | Michael S. Tsirkin | { |
940 | da146d0a | Avi Kivity | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
941 | da146d0a | Avi Kivity | |
942 | da146d0a | Avi Kivity | memory_region_destroy(&proxy->bar); |
943 | b2357c48 | Alex Williamson | msix_uninit_exclusive_bar(pci_dev); |
944 | 0f457d91 | Michael S. Tsirkin | } |
945 | 0f457d91 | Michael S. Tsirkin | |
946 | 16c915ba | Amit Shah | static int virtio_rng_init_pci(PCIDevice *pci_dev) |
947 | 16c915ba | Amit Shah | { |
948 | 16c915ba | Amit Shah | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
949 | 16c915ba | Amit Shah | VirtIODevice *vdev; |
950 | 16c915ba | Amit Shah | |
951 | 500054f1 | Anthony Liguori | if (proxy->rng.rng == NULL) { |
952 | 500054f1 | Anthony Liguori | proxy->rng.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM)); |
953 | 500054f1 | Anthony Liguori | |
954 | 500054f1 | Anthony Liguori | object_property_add_child(OBJECT(pci_dev), |
955 | 500054f1 | Anthony Liguori | "default-backend",
|
956 | 500054f1 | Anthony Liguori | OBJECT(proxy->rng.default_backend), |
957 | 500054f1 | Anthony Liguori | NULL);
|
958 | 500054f1 | Anthony Liguori | |
959 | 500054f1 | Anthony Liguori | object_property_set_link(OBJECT(pci_dev), |
960 | 500054f1 | Anthony Liguori | OBJECT(proxy->rng.default_backend), |
961 | 500054f1 | Anthony Liguori | "rng", NULL); |
962 | 500054f1 | Anthony Liguori | } |
963 | 500054f1 | Anthony Liguori | |
964 | 16c915ba | Amit Shah | vdev = virtio_rng_init(&pci_dev->qdev, &proxy->rng); |
965 | 16c915ba | Amit Shah | if (!vdev) {
|
966 | 16c915ba | Amit Shah | return -1; |
967 | 16c915ba | Amit Shah | } |
968 | 16c915ba | Amit Shah | virtio_init_pci(proxy, vdev); |
969 | 16c915ba | Amit Shah | return 0; |
970 | 16c915ba | Amit Shah | } |
971 | 16c915ba | Amit Shah | |
972 | 16c915ba | Amit Shah | static void virtio_rng_exit_pci(PCIDevice *pci_dev) |
973 | 16c915ba | Amit Shah | { |
974 | 16c915ba | Amit Shah | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
975 | 16c915ba | Amit Shah | |
976 | 16c915ba | Amit Shah | virtio_pci_stop_ioeventfd(proxy); |
977 | 16c915ba | Amit Shah | virtio_rng_exit(proxy->vdev); |
978 | 16c915ba | Amit Shah | virtio_exit_pci(pci_dev); |
979 | 16c915ba | Amit Shah | } |
980 | 16c915ba | Amit Shah | |
981 | 16c915ba | Amit Shah | static void virtio_rng_initfn(Object *obj) |
982 | 16c915ba | Amit Shah | { |
983 | 16c915ba | Amit Shah | PCIDevice *pci_dev = PCI_DEVICE(obj); |
984 | 16c915ba | Amit Shah | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
985 | 16c915ba | Amit Shah | |
986 | 16c915ba | Amit Shah | object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
|
987 | 16c915ba | Amit Shah | (Object **)&proxy->rng.rng, NULL);
|
988 | 16c915ba | Amit Shah | } |
989 | 16c915ba | Amit Shah | |
990 | 16c915ba | Amit Shah | static Property virtio_rng_properties[] = {
|
991 | 16c915ba | Amit Shah | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
992 | 904d6f58 | Anthony Liguori | /* Set a default rate limit of 2^47 bytes per minute or roughly 2TB/s. If
|
993 | 904d6f58 | Anthony Liguori | you have an entropy source capable of generating more entropy than this
|
994 | 904d6f58 | Anthony Liguori | and you can pass it through via virtio-rng, then hats off to you. Until
|
995 | 904d6f58 | Anthony Liguori | then, this is unlimited for all practical purposes.
|
996 | 904d6f58 | Anthony Liguori | */
|
997 | 904d6f58 | Anthony Liguori | DEFINE_PROP_UINT64("max-bytes", VirtIOPCIProxy, rng.max_bytes, INT64_MAX),
|
998 | 904d6f58 | Anthony Liguori | DEFINE_PROP_UINT32("period", VirtIOPCIProxy, rng.period_ms, 1 << 16), |
999 | 16c915ba | Amit Shah | DEFINE_PROP_END_OF_LIST(), |
1000 | 16c915ba | Amit Shah | }; |
1001 | 16c915ba | Amit Shah | |
1002 | 16c915ba | Amit Shah | static void virtio_rng_class_init(ObjectClass *klass, void *data) |
1003 | 16c915ba | Amit Shah | { |
1004 | 16c915ba | Amit Shah | DeviceClass *dc = DEVICE_CLASS(klass); |
1005 | 16c915ba | Amit Shah | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1006 | 16c915ba | Amit Shah | |
1007 | 16c915ba | Amit Shah | k->init = virtio_rng_init_pci; |
1008 | 16c915ba | Amit Shah | k->exit = virtio_rng_exit_pci; |
1009 | 16c915ba | Amit Shah | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1010 | 16c915ba | Amit Shah | k->device_id = PCI_DEVICE_ID_VIRTIO_RNG; |
1011 | 16c915ba | Amit Shah | k->revision = VIRTIO_PCI_ABI_VERSION; |
1012 | 16c915ba | Amit Shah | k->class_id = PCI_CLASS_OTHERS; |
1013 | 16c915ba | Amit Shah | dc->reset = virtio_pci_reset; |
1014 | 16c915ba | Amit Shah | dc->props = virtio_rng_properties; |
1015 | 16c915ba | Amit Shah | } |
1016 | 16c915ba | Amit Shah | |
1017 | 8c43a6f0 | Andreas Färber | static const TypeInfo virtio_rng_info = { |
1018 | 16c915ba | Amit Shah | .name = "virtio-rng-pci",
|
1019 | 16c915ba | Amit Shah | .parent = TYPE_PCI_DEVICE, |
1020 | 16c915ba | Amit Shah | .instance_size = sizeof(VirtIOPCIProxy),
|
1021 | 16c915ba | Amit Shah | .instance_init = virtio_rng_initfn, |
1022 | 16c915ba | Amit Shah | .class_init = virtio_rng_class_init, |
1023 | 16c915ba | Amit Shah | }; |
1024 | 16c915ba | Amit Shah | |
1025 | 60653b28 | Paolo Bonzini | #ifdef CONFIG_VIRTFS
|
1026 | 60653b28 | Paolo Bonzini | static int virtio_9p_init_pci(PCIDevice *pci_dev) |
1027 | 60653b28 | Paolo Bonzini | { |
1028 | 60653b28 | Paolo Bonzini | VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
1029 | 60653b28 | Paolo Bonzini | VirtIODevice *vdev; |
1030 | 60653b28 | Paolo Bonzini | |
1031 | 60653b28 | Paolo Bonzini | vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf); |
1032 | 60653b28 | Paolo Bonzini | vdev->nvectors = proxy->nvectors; |
1033 | 60653b28 | Paolo Bonzini | virtio_init_pci(proxy, vdev); |
1034 | 60653b28 | Paolo Bonzini | /* make the actual value visible */
|
1035 | 60653b28 | Paolo Bonzini | proxy->nvectors = vdev->nvectors; |
1036 | 60653b28 | Paolo Bonzini | return 0; |
1037 | 60653b28 | Paolo Bonzini | } |
1038 | 60653b28 | Paolo Bonzini | |
1039 | 60653b28 | Paolo Bonzini | static Property virtio_9p_properties[] = {
|
1040 | 60653b28 | Paolo Bonzini | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
1041 | 60653b28 | Paolo Bonzini | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
1042 | 60653b28 | Paolo Bonzini | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
1043 | 60653b28 | Paolo Bonzini | DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
|
1044 | 60653b28 | Paolo Bonzini | DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
|
1045 | 60653b28 | Paolo Bonzini | DEFINE_PROP_END_OF_LIST(), |
1046 | 60653b28 | Paolo Bonzini | }; |
1047 | 60653b28 | Paolo Bonzini | |
1048 | 60653b28 | Paolo Bonzini | static void virtio_9p_class_init(ObjectClass *klass, void *data) |
1049 | 60653b28 | Paolo Bonzini | { |
1050 | 60653b28 | Paolo Bonzini | DeviceClass *dc = DEVICE_CLASS(klass); |
1051 | 60653b28 | Paolo Bonzini | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1052 | 60653b28 | Paolo Bonzini | |
1053 | 60653b28 | Paolo Bonzini | k->init = virtio_9p_init_pci; |
1054 | 60653b28 | Paolo Bonzini | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1055 | 60653b28 | Paolo Bonzini | k->device_id = PCI_DEVICE_ID_VIRTIO_9P; |
1056 | 60653b28 | Paolo Bonzini | k->revision = VIRTIO_PCI_ABI_VERSION; |
1057 | 60653b28 | Paolo Bonzini | k->class_id = 0x2;
|
1058 | 60653b28 | Paolo Bonzini | dc->props = virtio_9p_properties; |
1059 | 60653b28 | Paolo Bonzini | dc->reset = virtio_pci_reset; |
1060 | 60653b28 | Paolo Bonzini | } |
1061 | 60653b28 | Paolo Bonzini | |
1062 | 60653b28 | Paolo Bonzini | static const TypeInfo virtio_9p_info = { |
1063 | 60653b28 | Paolo Bonzini | .name = "virtio-9p-pci",
|
1064 | 60653b28 | Paolo Bonzini | .parent = TYPE_PCI_DEVICE, |
1065 | 60653b28 | Paolo Bonzini | .instance_size = sizeof(VirtIOPCIProxy),
|
1066 | 60653b28 | Paolo Bonzini | .class_init = virtio_9p_class_init, |
1067 | 60653b28 | Paolo Bonzini | }; |
1068 | 60653b28 | Paolo Bonzini | #endif
|
1069 | 60653b28 | Paolo Bonzini | |
1070 | 085bccb7 | KONRAD Frederic | /*
|
1071 | 085bccb7 | KONRAD Frederic | * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
|
1072 | 085bccb7 | KONRAD Frederic | */
|
1073 | 085bccb7 | KONRAD Frederic | |
1074 | 085bccb7 | KONRAD Frederic | /* This is called by virtio-bus just after the device is plugged. */
|
1075 | 085bccb7 | KONRAD Frederic | static void virtio_pci_device_plugged(DeviceState *d) |
1076 | 085bccb7 | KONRAD Frederic | { |
1077 | 085bccb7 | KONRAD Frederic | VirtIOPCIProxy *proxy = VIRTIO_PCI(d); |
1078 | 085bccb7 | KONRAD Frederic | VirtioBusState *bus = &proxy->bus; |
1079 | 085bccb7 | KONRAD Frederic | uint8_t *config; |
1080 | 085bccb7 | KONRAD Frederic | uint32_t size; |
1081 | 085bccb7 | KONRAD Frederic | |
1082 | 085bccb7 | KONRAD Frederic | proxy->vdev = bus->vdev; |
1083 | 085bccb7 | KONRAD Frederic | |
1084 | 085bccb7 | KONRAD Frederic | config = proxy->pci_dev.config; |
1085 | 085bccb7 | KONRAD Frederic | if (proxy->class_code) {
|
1086 | 085bccb7 | KONRAD Frederic | pci_config_set_class(config, proxy->class_code); |
1087 | 085bccb7 | KONRAD Frederic | } |
1088 | 085bccb7 | KONRAD Frederic | pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
1089 | 085bccb7 | KONRAD Frederic | pci_get_word(config + PCI_VENDOR_ID)); |
1090 | 085bccb7 | KONRAD Frederic | pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus)); |
1091 | 085bccb7 | KONRAD Frederic | config[PCI_INTERRUPT_PIN] = 1;
|
1092 | 085bccb7 | KONRAD Frederic | |
1093 | 085bccb7 | KONRAD Frederic | if (proxy->nvectors &&
|
1094 | 085bccb7 | KONRAD Frederic | msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors, 1)) {
|
1095 | 085bccb7 | KONRAD Frederic | proxy->nvectors = 0;
|
1096 | 085bccb7 | KONRAD Frederic | } |
1097 | 085bccb7 | KONRAD Frederic | |
1098 | 085bccb7 | KONRAD Frederic | proxy->pci_dev.config_write = virtio_write_config; |
1099 | 085bccb7 | KONRAD Frederic | |
1100 | 085bccb7 | KONRAD Frederic | size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) |
1101 | 085bccb7 | KONRAD Frederic | + virtio_bus_get_vdev_config_len(bus); |
1102 | 085bccb7 | KONRAD Frederic | if (size & (size - 1)) { |
1103 | 085bccb7 | KONRAD Frederic | size = 1 << qemu_fls(size);
|
1104 | 085bccb7 | KONRAD Frederic | } |
1105 | 085bccb7 | KONRAD Frederic | |
1106 | 085bccb7 | KONRAD Frederic | memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
1107 | 085bccb7 | KONRAD Frederic | "virtio-pci", size);
|
1108 | 085bccb7 | KONRAD Frederic | pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
1109 | 085bccb7 | KONRAD Frederic | &proxy->bar); |
1110 | 085bccb7 | KONRAD Frederic | |
1111 | 085bccb7 | KONRAD Frederic | if (!kvm_has_many_ioeventfds()) {
|
1112 | 085bccb7 | KONRAD Frederic | proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
1113 | 085bccb7 | KONRAD Frederic | } |
1114 | 085bccb7 | KONRAD Frederic | |
1115 | 085bccb7 | KONRAD Frederic | proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
1116 | 085bccb7 | KONRAD Frederic | proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
1117 | 085bccb7 | KONRAD Frederic | proxy->host_features = virtio_bus_get_vdev_features(bus, |
1118 | 085bccb7 | KONRAD Frederic | proxy->host_features); |
1119 | 085bccb7 | KONRAD Frederic | } |
1120 | 085bccb7 | KONRAD Frederic | |
1121 | 085bccb7 | KONRAD Frederic | static int virtio_pci_init(PCIDevice *pci_dev) |
1122 | 085bccb7 | KONRAD Frederic | { |
1123 | 085bccb7 | KONRAD Frederic | VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); |
1124 | 085bccb7 | KONRAD Frederic | VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev); |
1125 | 085bccb7 | KONRAD Frederic | virtio_pci_bus_new(&dev->bus, dev); |
1126 | 085bccb7 | KONRAD Frederic | if (k->init != NULL) { |
1127 | 085bccb7 | KONRAD Frederic | return k->init(dev);
|
1128 | 085bccb7 | KONRAD Frederic | } |
1129 | 085bccb7 | KONRAD Frederic | return 0; |
1130 | 085bccb7 | KONRAD Frederic | } |
1131 | 085bccb7 | KONRAD Frederic | |
1132 | 085bccb7 | KONRAD Frederic | static void virtio_pci_exit(PCIDevice *pci_dev) |
1133 | 085bccb7 | KONRAD Frederic | { |
1134 | 085bccb7 | KONRAD Frederic | VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); |
1135 | 10479a80 | KONRAD Frederic | virtio_pci_stop_ioeventfd(proxy); |
1136 | 085bccb7 | KONRAD Frederic | virtio_exit_pci(pci_dev); |
1137 | 085bccb7 | KONRAD Frederic | } |
1138 | 085bccb7 | KONRAD Frederic | |
1139 | 085bccb7 | KONRAD Frederic | /*
|
1140 | 085bccb7 | KONRAD Frederic | * This will be renamed virtio_pci_reset at the end of the series.
|
1141 | 085bccb7 | KONRAD Frederic | * virtio_pci_reset is still in use at this moment.
|
1142 | 085bccb7 | KONRAD Frederic | */
|
1143 | 085bccb7 | KONRAD Frederic | static void virtio_pci_rst(DeviceState *qdev) |
1144 | 085bccb7 | KONRAD Frederic | { |
1145 | 085bccb7 | KONRAD Frederic | VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev); |
1146 | 085bccb7 | KONRAD Frederic | VirtioBusState *bus = VIRTIO_BUS(&proxy->bus); |
1147 | 085bccb7 | KONRAD Frederic | virtio_pci_stop_ioeventfd(proxy); |
1148 | 085bccb7 | KONRAD Frederic | virtio_bus_reset(bus); |
1149 | 085bccb7 | KONRAD Frederic | msix_unuse_all_vectors(&proxy->pci_dev); |
1150 | 085bccb7 | KONRAD Frederic | proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
1151 | 085bccb7 | KONRAD Frederic | } |
1152 | 085bccb7 | KONRAD Frederic | |
1153 | 085bccb7 | KONRAD Frederic | static void virtio_pci_class_init(ObjectClass *klass, void *data) |
1154 | 085bccb7 | KONRAD Frederic | { |
1155 | 085bccb7 | KONRAD Frederic | DeviceClass *dc = DEVICE_CLASS(klass); |
1156 | 085bccb7 | KONRAD Frederic | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1157 | 085bccb7 | KONRAD Frederic | |
1158 | 085bccb7 | KONRAD Frederic | k->init = virtio_pci_init; |
1159 | 085bccb7 | KONRAD Frederic | k->exit = virtio_pci_exit; |
1160 | 085bccb7 | KONRAD Frederic | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1161 | 085bccb7 | KONRAD Frederic | k->revision = VIRTIO_PCI_ABI_VERSION; |
1162 | 085bccb7 | KONRAD Frederic | k->class_id = PCI_CLASS_OTHERS; |
1163 | 085bccb7 | KONRAD Frederic | dc->reset = virtio_pci_rst; |
1164 | 085bccb7 | KONRAD Frederic | } |
1165 | 085bccb7 | KONRAD Frederic | |
1166 | 085bccb7 | KONRAD Frederic | static const TypeInfo virtio_pci_info = { |
1167 | 085bccb7 | KONRAD Frederic | .name = TYPE_VIRTIO_PCI, |
1168 | 085bccb7 | KONRAD Frederic | .parent = TYPE_PCI_DEVICE, |
1169 | 085bccb7 | KONRAD Frederic | .instance_size = sizeof(VirtIOPCIProxy),
|
1170 | 085bccb7 | KONRAD Frederic | .class_init = virtio_pci_class_init, |
1171 | 085bccb7 | KONRAD Frederic | .class_size = sizeof(VirtioPCIClass),
|
1172 | 085bccb7 | KONRAD Frederic | .abstract = true,
|
1173 | 085bccb7 | KONRAD Frederic | }; |
1174 | 085bccb7 | KONRAD Frederic | |
1175 | 653ced07 | KONRAD Frederic | /* virtio-blk-pci */
|
1176 | 653ced07 | KONRAD Frederic | |
1177 | 653ced07 | KONRAD Frederic | static Property virtio_blk_pci_properties[] = {
|
1178 | 653ced07 | KONRAD Frederic | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
1179 | 653ced07 | KONRAD Frederic | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1180 | 653ced07 | KONRAD Frederic | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
1181 | 653ced07 | KONRAD Frederic | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
1182 | 653ced07 | KONRAD Frederic | #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
|
1183 | 653ced07 | KONRAD Frederic | DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false), |
1184 | 653ced07 | KONRAD Frederic | #endif
|
1185 | 653ced07 | KONRAD Frederic | DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), |
1186 | 653ced07 | KONRAD Frederic | DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk), |
1187 | 653ced07 | KONRAD Frederic | DEFINE_PROP_END_OF_LIST(), |
1188 | 653ced07 | KONRAD Frederic | }; |
1189 | 653ced07 | KONRAD Frederic | |
1190 | 653ced07 | KONRAD Frederic | static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev) |
1191 | 653ced07 | KONRAD Frederic | { |
1192 | 653ced07 | KONRAD Frederic | VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); |
1193 | 653ced07 | KONRAD Frederic | DeviceState *vdev = DEVICE(&dev->vdev); |
1194 | 653ced07 | KONRAD Frederic | virtio_blk_set_conf(vdev, &(dev->blk)); |
1195 | 653ced07 | KONRAD Frederic | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1196 | 653ced07 | KONRAD Frederic | if (qdev_init(vdev) < 0) { |
1197 | 653ced07 | KONRAD Frederic | return -1; |
1198 | 653ced07 | KONRAD Frederic | } |
1199 | 653ced07 | KONRAD Frederic | return 0; |
1200 | 653ced07 | KONRAD Frederic | } |
1201 | 653ced07 | KONRAD Frederic | |
1202 | 653ced07 | KONRAD Frederic | static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) |
1203 | 653ced07 | KONRAD Frederic | { |
1204 | 653ced07 | KONRAD Frederic | DeviceClass *dc = DEVICE_CLASS(klass); |
1205 | 653ced07 | KONRAD Frederic | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1206 | 653ced07 | KONRAD Frederic | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1207 | 653ced07 | KONRAD Frederic | |
1208 | 653ced07 | KONRAD Frederic | dc->props = virtio_blk_pci_properties; |
1209 | 653ced07 | KONRAD Frederic | k->init = virtio_blk_pci_init; |
1210 | 653ced07 | KONRAD Frederic | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1211 | 653ced07 | KONRAD Frederic | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; |
1212 | 653ced07 | KONRAD Frederic | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
1213 | 653ced07 | KONRAD Frederic | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
1214 | 653ced07 | KONRAD Frederic | } |
1215 | 653ced07 | KONRAD Frederic | |
1216 | 653ced07 | KONRAD Frederic | static void virtio_blk_pci_instance_init(Object *obj) |
1217 | 653ced07 | KONRAD Frederic | { |
1218 | 653ced07 | KONRAD Frederic | VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); |
1219 | 653ced07 | KONRAD Frederic | object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK); |
1220 | 653ced07 | KONRAD Frederic | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1221 | 653ced07 | KONRAD Frederic | } |
1222 | 653ced07 | KONRAD Frederic | |
1223 | 653ced07 | KONRAD Frederic | static const TypeInfo virtio_blk_pci_info = { |
1224 | 653ced07 | KONRAD Frederic | .name = TYPE_VIRTIO_BLK_PCI, |
1225 | 653ced07 | KONRAD Frederic | .parent = TYPE_VIRTIO_PCI, |
1226 | 653ced07 | KONRAD Frederic | .instance_size = sizeof(VirtIOBlkPCI),
|
1227 | 653ced07 | KONRAD Frederic | .instance_init = virtio_blk_pci_instance_init, |
1228 | 653ced07 | KONRAD Frederic | .class_init = virtio_blk_pci_class_init, |
1229 | 653ced07 | KONRAD Frederic | }; |
1230 | 653ced07 | KONRAD Frederic | |
1231 | bc7b90a0 | KONRAD Frederic | /* virtio-scsi-pci */
|
1232 | bc7b90a0 | KONRAD Frederic | |
1233 | bc7b90a0 | KONRAD Frederic | static Property virtio_scsi_pci_properties[] = {
|
1234 | bc7b90a0 | KONRAD Frederic | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1235 | bc7b90a0 | KONRAD Frederic | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
1236 | bc7b90a0 | KONRAD Frederic | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
|
1237 | bc7b90a0 | KONRAD Frederic | DEV_NVECTORS_UNSPECIFIED), |
1238 | bc7b90a0 | KONRAD Frederic | DEFINE_VIRTIO_SCSI_FEATURES(VirtIOPCIProxy, host_features), |
1239 | bc7b90a0 | KONRAD Frederic | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIPCI, vdev.conf), |
1240 | bc7b90a0 | KONRAD Frederic | DEFINE_PROP_END_OF_LIST(), |
1241 | bc7b90a0 | KONRAD Frederic | }; |
1242 | bc7b90a0 | KONRAD Frederic | |
1243 | bc7b90a0 | KONRAD Frederic | static int virtio_scsi_pci_init_pci(VirtIOPCIProxy *vpci_dev) |
1244 | bc7b90a0 | KONRAD Frederic | { |
1245 | bc7b90a0 | KONRAD Frederic | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); |
1246 | bc7b90a0 | KONRAD Frederic | DeviceState *vdev = DEVICE(&dev->vdev); |
1247 | bc7b90a0 | KONRAD Frederic | |
1248 | bc7b90a0 | KONRAD Frederic | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
|
1249 | bc7b90a0 | KONRAD Frederic | vpci_dev->nvectors = dev->vdev.conf.num_queues + 3;
|
1250 | bc7b90a0 | KONRAD Frederic | } |
1251 | bc7b90a0 | KONRAD Frederic | |
1252 | bc7b90a0 | KONRAD Frederic | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1253 | bc7b90a0 | KONRAD Frederic | if (qdev_init(vdev) < 0) { |
1254 | bc7b90a0 | KONRAD Frederic | return -1; |
1255 | bc7b90a0 | KONRAD Frederic | } |
1256 | bc7b90a0 | KONRAD Frederic | return 0; |
1257 | bc7b90a0 | KONRAD Frederic | } |
1258 | bc7b90a0 | KONRAD Frederic | |
1259 | bc7b90a0 | KONRAD Frederic | static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) |
1260 | bc7b90a0 | KONRAD Frederic | { |
1261 | bc7b90a0 | KONRAD Frederic | DeviceClass *dc = DEVICE_CLASS(klass); |
1262 | bc7b90a0 | KONRAD Frederic | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1263 | bc7b90a0 | KONRAD Frederic | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1264 | bc7b90a0 | KONRAD Frederic | k->init = virtio_scsi_pci_init_pci; |
1265 | bc7b90a0 | KONRAD Frederic | dc->props = virtio_scsi_pci_properties; |
1266 | bc7b90a0 | KONRAD Frederic | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1267 | bc7b90a0 | KONRAD Frederic | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
1268 | bc7b90a0 | KONRAD Frederic | pcidev_k->revision = 0x00;
|
1269 | bc7b90a0 | KONRAD Frederic | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
1270 | bc7b90a0 | KONRAD Frederic | } |
1271 | bc7b90a0 | KONRAD Frederic | |
1272 | bc7b90a0 | KONRAD Frederic | static void virtio_scsi_pci_instance_init(Object *obj) |
1273 | bc7b90a0 | KONRAD Frederic | { |
1274 | bc7b90a0 | KONRAD Frederic | VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); |
1275 | bc7b90a0 | KONRAD Frederic | object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI); |
1276 | bc7b90a0 | KONRAD Frederic | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1277 | bc7b90a0 | KONRAD Frederic | } |
1278 | bc7b90a0 | KONRAD Frederic | |
1279 | bc7b90a0 | KONRAD Frederic | static const TypeInfo virtio_scsi_pci_info = { |
1280 | bc7b90a0 | KONRAD Frederic | .name = TYPE_VIRTIO_SCSI_PCI, |
1281 | bc7b90a0 | KONRAD Frederic | .parent = TYPE_VIRTIO_PCI, |
1282 | bc7b90a0 | KONRAD Frederic | .instance_size = sizeof(VirtIOSCSIPCI),
|
1283 | bc7b90a0 | KONRAD Frederic | .instance_init = virtio_scsi_pci_instance_init, |
1284 | bc7b90a0 | KONRAD Frederic | .class_init = virtio_scsi_pci_class_init, |
1285 | bc7b90a0 | KONRAD Frederic | }; |
1286 | bc7b90a0 | KONRAD Frederic | |
1287 | e378e88d | KONRAD Frederic | /* virtio-balloon-pci */
|
1288 | e378e88d | KONRAD Frederic | |
1289 | 24a6e7f4 | KONRAD Frederic | static void balloon_pci_stats_get_all(Object *obj, struct Visitor *v, |
1290 | 24a6e7f4 | KONRAD Frederic | void *opaque, const char *name, |
1291 | 24a6e7f4 | KONRAD Frederic | Error **errp) |
1292 | 24a6e7f4 | KONRAD Frederic | { |
1293 | 24a6e7f4 | KONRAD Frederic | VirtIOBalloonPCI *dev = opaque; |
1294 | 24a6e7f4 | KONRAD Frederic | object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp);
|
1295 | 24a6e7f4 | KONRAD Frederic | } |
1296 | 24a6e7f4 | KONRAD Frederic | |
1297 | 24a6e7f4 | KONRAD Frederic | static void balloon_pci_stats_get_poll_interval(Object *obj, struct Visitor *v, |
1298 | 24a6e7f4 | KONRAD Frederic | void *opaque, const char *name, |
1299 | 24a6e7f4 | KONRAD Frederic | Error **errp) |
1300 | 24a6e7f4 | KONRAD Frederic | { |
1301 | 24a6e7f4 | KONRAD Frederic | VirtIOBalloonPCI *dev = opaque; |
1302 | 24a6e7f4 | KONRAD Frederic | object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
1303 | 24a6e7f4 | KONRAD Frederic | errp); |
1304 | 24a6e7f4 | KONRAD Frederic | } |
1305 | 24a6e7f4 | KONRAD Frederic | |
1306 | 24a6e7f4 | KONRAD Frederic | static void balloon_pci_stats_set_poll_interval(Object *obj, struct Visitor *v, |
1307 | 24a6e7f4 | KONRAD Frederic | void *opaque, const char *name, |
1308 | 24a6e7f4 | KONRAD Frederic | Error **errp) |
1309 | 24a6e7f4 | KONRAD Frederic | { |
1310 | 24a6e7f4 | KONRAD Frederic | VirtIOBalloonPCI *dev = opaque; |
1311 | 24a6e7f4 | KONRAD Frederic | object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
|
1312 | 24a6e7f4 | KONRAD Frederic | errp); |
1313 | 24a6e7f4 | KONRAD Frederic | } |
1314 | 24a6e7f4 | KONRAD Frederic | |
1315 | e378e88d | KONRAD Frederic | static Property virtio_balloon_pci_properties[] = {
|
1316 | e378e88d | KONRAD Frederic | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
1317 | e378e88d | KONRAD Frederic | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
1318 | e378e88d | KONRAD Frederic | DEFINE_PROP_END_OF_LIST(), |
1319 | e378e88d | KONRAD Frederic | }; |
1320 | e378e88d | KONRAD Frederic | |
1321 | e378e88d | KONRAD Frederic | static int virtio_balloon_pci_init(VirtIOPCIProxy *vpci_dev) |
1322 | e378e88d | KONRAD Frederic | { |
1323 | e378e88d | KONRAD Frederic | VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev); |
1324 | e378e88d | KONRAD Frederic | DeviceState *vdev = DEVICE(&dev->vdev); |
1325 | e378e88d | KONRAD Frederic | |
1326 | e378e88d | KONRAD Frederic | if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
|
1327 | e378e88d | KONRAD Frederic | vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
|
1328 | e378e88d | KONRAD Frederic | vpci_dev->class_code = PCI_CLASS_OTHERS; |
1329 | e378e88d | KONRAD Frederic | } |
1330 | e378e88d | KONRAD Frederic | |
1331 | e378e88d | KONRAD Frederic | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1332 | e378e88d | KONRAD Frederic | if (qdev_init(vdev) < 0) { |
1333 | e378e88d | KONRAD Frederic | return -1; |
1334 | e378e88d | KONRAD Frederic | } |
1335 | e378e88d | KONRAD Frederic | return 0; |
1336 | e378e88d | KONRAD Frederic | } |
1337 | e378e88d | KONRAD Frederic | |
1338 | e378e88d | KONRAD Frederic | static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data) |
1339 | e378e88d | KONRAD Frederic | { |
1340 | e378e88d | KONRAD Frederic | DeviceClass *dc = DEVICE_CLASS(klass); |
1341 | e378e88d | KONRAD Frederic | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1342 | e378e88d | KONRAD Frederic | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1343 | e378e88d | KONRAD Frederic | k->init = virtio_balloon_pci_init; |
1344 | e378e88d | KONRAD Frederic | dc->props = virtio_balloon_pci_properties; |
1345 | e378e88d | KONRAD Frederic | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1346 | e378e88d | KONRAD Frederic | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; |
1347 | e378e88d | KONRAD Frederic | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
1348 | e378e88d | KONRAD Frederic | pcidev_k->class_id = PCI_CLASS_OTHERS; |
1349 | e378e88d | KONRAD Frederic | } |
1350 | e378e88d | KONRAD Frederic | |
1351 | e378e88d | KONRAD Frederic | static void virtio_balloon_pci_instance_init(Object *obj) |
1352 | e378e88d | KONRAD Frederic | { |
1353 | e378e88d | KONRAD Frederic | VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj); |
1354 | e378e88d | KONRAD Frederic | object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BALLOON); |
1355 | e378e88d | KONRAD Frederic | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1356 | 24a6e7f4 | KONRAD Frederic | |
1357 | 24a6e7f4 | KONRAD Frederic | object_property_add(obj, "guest-stats", "guest statistics", |
1358 | 24a6e7f4 | KONRAD Frederic | balloon_pci_stats_get_all, NULL, NULL, dev, |
1359 | 24a6e7f4 | KONRAD Frederic | NULL);
|
1360 | 24a6e7f4 | KONRAD Frederic | |
1361 | 24a6e7f4 | KONRAD Frederic | object_property_add(obj, "guest-stats-polling-interval", "int", |
1362 | 24a6e7f4 | KONRAD Frederic | balloon_pci_stats_get_poll_interval, |
1363 | 24a6e7f4 | KONRAD Frederic | balloon_pci_stats_set_poll_interval, |
1364 | 24a6e7f4 | KONRAD Frederic | NULL, dev, NULL); |
1365 | e378e88d | KONRAD Frederic | } |
1366 | e378e88d | KONRAD Frederic | |
1367 | e378e88d | KONRAD Frederic | static const TypeInfo virtio_balloon_pci_info = { |
1368 | e378e88d | KONRAD Frederic | .name = TYPE_VIRTIO_BALLOON_PCI, |
1369 | e378e88d | KONRAD Frederic | .parent = TYPE_VIRTIO_PCI, |
1370 | e378e88d | KONRAD Frederic | .instance_size = sizeof(VirtIOBalloonPCI),
|
1371 | e378e88d | KONRAD Frederic | .instance_init = virtio_balloon_pci_instance_init, |
1372 | e378e88d | KONRAD Frederic | .class_init = virtio_balloon_pci_class_init, |
1373 | e378e88d | KONRAD Frederic | }; |
1374 | e378e88d | KONRAD Frederic | |
1375 | f7f7464a | KONRAD Frederic | /* virtio-serial-pci */
|
1376 | f7f7464a | KONRAD Frederic | |
1377 | f7f7464a | KONRAD Frederic | static int virtio_serial_pci_init(VirtIOPCIProxy *vpci_dev) |
1378 | f7f7464a | KONRAD Frederic | { |
1379 | f7f7464a | KONRAD Frederic | VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev); |
1380 | f7f7464a | KONRAD Frederic | DeviceState *vdev = DEVICE(&dev->vdev); |
1381 | f7f7464a | KONRAD Frederic | |
1382 | f7f7464a | KONRAD Frederic | if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
|
1383 | f7f7464a | KONRAD Frederic | vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
|
1384 | f7f7464a | KONRAD Frederic | vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */
|
1385 | f7f7464a | KONRAD Frederic | vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER; |
1386 | f7f7464a | KONRAD Frederic | } |
1387 | f7f7464a | KONRAD Frederic | |
1388 | f7f7464a | KONRAD Frederic | /* backwards-compatibility with machines that were created with
|
1389 | f7f7464a | KONRAD Frederic | DEV_NVECTORS_UNSPECIFIED */
|
1390 | f7f7464a | KONRAD Frederic | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
|
1391 | f7f7464a | KONRAD Frederic | vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1;
|
1392 | f7f7464a | KONRAD Frederic | } |
1393 | f7f7464a | KONRAD Frederic | |
1394 | f7f7464a | KONRAD Frederic | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1395 | f7f7464a | KONRAD Frederic | if (qdev_init(vdev) < 0) { |
1396 | f7f7464a | KONRAD Frederic | return -1; |
1397 | f7f7464a | KONRAD Frederic | } |
1398 | f7f7464a | KONRAD Frederic | return 0; |
1399 | f7f7464a | KONRAD Frederic | } |
1400 | f7f7464a | KONRAD Frederic | |
1401 | f7f7464a | KONRAD Frederic | static Property virtio_serial_pci_properties[] = {
|
1402 | f7f7464a | KONRAD Frederic | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1403 | f7f7464a | KONRAD Frederic | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
1404 | f7f7464a | KONRAD Frederic | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
1405 | f7f7464a | KONRAD Frederic | DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
1406 | f7f7464a | KONRAD Frederic | DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
1407 | f7f7464a | KONRAD Frederic | DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialPCI, vdev.serial), |
1408 | f7f7464a | KONRAD Frederic | DEFINE_PROP_END_OF_LIST(), |
1409 | f7f7464a | KONRAD Frederic | }; |
1410 | f7f7464a | KONRAD Frederic | |
1411 | f7f7464a | KONRAD Frederic | static void virtio_serial_pci_class_init(ObjectClass *klass, void *data) |
1412 | f7f7464a | KONRAD Frederic | { |
1413 | f7f7464a | KONRAD Frederic | DeviceClass *dc = DEVICE_CLASS(klass); |
1414 | f7f7464a | KONRAD Frederic | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
1415 | f7f7464a | KONRAD Frederic | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
1416 | f7f7464a | KONRAD Frederic | k->init = virtio_serial_pci_init; |
1417 | f7f7464a | KONRAD Frederic | dc->props = virtio_serial_pci_properties; |
1418 | f7f7464a | KONRAD Frederic | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1419 | f7f7464a | KONRAD Frederic | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; |
1420 | f7f7464a | KONRAD Frederic | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
1421 | f7f7464a | KONRAD Frederic | pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER; |
1422 | f7f7464a | KONRAD Frederic | } |
1423 | f7f7464a | KONRAD Frederic | |
1424 | f7f7464a | KONRAD Frederic | static void virtio_serial_pci_instance_init(Object *obj) |
1425 | f7f7464a | KONRAD Frederic | { |
1426 | f7f7464a | KONRAD Frederic | VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj); |
1427 | f7f7464a | KONRAD Frederic | object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL); |
1428 | f7f7464a | KONRAD Frederic | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1429 | f7f7464a | KONRAD Frederic | } |
1430 | f7f7464a | KONRAD Frederic | |
1431 | f7f7464a | KONRAD Frederic | static const TypeInfo virtio_serial_pci_info = { |
1432 | f7f7464a | KONRAD Frederic | .name = TYPE_VIRTIO_SERIAL_PCI, |
1433 | f7f7464a | KONRAD Frederic | .parent = TYPE_VIRTIO_PCI, |
1434 | f7f7464a | KONRAD Frederic | .instance_size = sizeof(VirtIOSerialPCI),
|
1435 | f7f7464a | KONRAD Frederic | .instance_init = virtio_serial_pci_instance_init, |
1436 | f7f7464a | KONRAD Frederic | .class_init = virtio_serial_pci_class_init, |
1437 | f7f7464a | KONRAD Frederic | }; |
1438 | f7f7464a | KONRAD Frederic | |
1439 | e37da394 | KONRAD Frederic | /* virtio-net-pci */
|
1440 | e37da394 | KONRAD Frederic | |
1441 | e37da394 | KONRAD Frederic | static Property virtio_net_properties[] = {
|
1442 | e37da394 | KONRAD Frederic | DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
1443 | e37da394 | KONRAD Frederic | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
|
1444 | e37da394 | KONRAD Frederic | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), |
1445 | e37da394 | KONRAD Frederic | DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), |
1446 | e37da394 | KONRAD Frederic | DEFINE_NIC_PROPERTIES(VirtIONetPCI, vdev.nic_conf), |
1447 | e37da394 | KONRAD Frederic | DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetPCI, vdev.net_conf), |
1448 | e37da394 | KONRAD Frederic | DEFINE_PROP_END_OF_LIST(), |
1449 | e37da394 | KONRAD Frederic | }; |
1450 | e37da394 | KONRAD Frederic | |
1451 | e37da394 | KONRAD Frederic | static int virtio_net_pci_init(VirtIOPCIProxy *vpci_dev) |
1452 | e37da394 | KONRAD Frederic | { |
1453 | e37da394 | KONRAD Frederic | VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev); |
1454 | e37da394 | KONRAD Frederic | DeviceState *vdev = DEVICE(&dev->vdev); |
1455 | e37da394 | KONRAD Frederic | |
1456 | e37da394 | KONRAD Frederic | virtio_net_set_config_size(&dev->vdev, vpci_dev->host_features); |
1457 | e37da394 | KONRAD Frederic | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
1458 | e37da394 | KONRAD Frederic | if (qdev_init(vdev) < 0) { |
1459 | e37da394 | KONRAD Frederic | return -1; |
1460 | e37da394 | KONRAD Frederic | } |
1461 | e37da394 | KONRAD Frederic | return 0; |
1462 | e37da394 | KONRAD Frederic | } |
1463 | e37da394 | KONRAD Frederic | |
1464 | e37da394 | KONRAD Frederic | static void virtio_net_pci_class_init(ObjectClass *klass, void *data) |
1465 | e37da394 | KONRAD Frederic | { |
1466 | e37da394 | KONRAD Frederic | DeviceClass *dc = DEVICE_CLASS(klass); |
1467 | e37da394 | KONRAD Frederic | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1468 | e37da394 | KONRAD Frederic | VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass); |
1469 | e37da394 | KONRAD Frederic | |
1470 | e37da394 | KONRAD Frederic | k->romfile = "efi-virtio.rom";
|
1471 | e37da394 | KONRAD Frederic | k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1472 | e37da394 | KONRAD Frederic | k->device_id = PCI_DEVICE_ID_VIRTIO_NET; |
1473 | e37da394 | KONRAD Frederic | k->revision = VIRTIO_PCI_ABI_VERSION; |
1474 | e37da394 | KONRAD Frederic | k->class_id = PCI_CLASS_NETWORK_ETHERNET; |
1475 | e37da394 | KONRAD Frederic | dc->props = virtio_net_properties; |
1476 | e37da394 | KONRAD Frederic | vpciklass->init = virtio_net_pci_init; |
1477 | e37da394 | KONRAD Frederic | } |
1478 | e37da394 | KONRAD Frederic | |
1479 | e37da394 | KONRAD Frederic | static void virtio_net_pci_instance_init(Object *obj) |
1480 | e37da394 | KONRAD Frederic | { |
1481 | e37da394 | KONRAD Frederic | VirtIONetPCI *dev = VIRTIO_NET_PCI(obj); |
1482 | e37da394 | KONRAD Frederic | object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET); |
1483 | e37da394 | KONRAD Frederic | object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
1484 | e37da394 | KONRAD Frederic | } |
1485 | e37da394 | KONRAD Frederic | |
1486 | e37da394 | KONRAD Frederic | static const TypeInfo virtio_net_pci_info = { |
1487 | e37da394 | KONRAD Frederic | .name = TYPE_VIRTIO_NET_PCI, |
1488 | e37da394 | KONRAD Frederic | .parent = TYPE_VIRTIO_PCI, |
1489 | e37da394 | KONRAD Frederic | .instance_size = sizeof(VirtIONetPCI),
|
1490 | e37da394 | KONRAD Frederic | .instance_init = virtio_net_pci_instance_init, |
1491 | e37da394 | KONRAD Frederic | .class_init = virtio_net_pci_class_init, |
1492 | e37da394 | KONRAD Frederic | }; |
1493 | e37da394 | KONRAD Frederic | |
1494 | 0a2acf5e | KONRAD Frederic | /* virtio-pci-bus */
|
1495 | 0a2acf5e | KONRAD Frederic | |
1496 | 0a2acf5e | KONRAD Frederic | void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
|
1497 | 0a2acf5e | KONRAD Frederic | { |
1498 | 0a2acf5e | KONRAD Frederic | DeviceState *qdev = DEVICE(dev); |
1499 | 0a2acf5e | KONRAD Frederic | BusState *qbus; |
1500 | 0a2acf5e | KONRAD Frederic | qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, NULL);
|
1501 | 0a2acf5e | KONRAD Frederic | qbus = BUS(bus); |
1502 | cbd19063 | KONRAD Frederic | qbus->allow_hotplug = 1;
|
1503 | 0a2acf5e | KONRAD Frederic | } |
1504 | 0a2acf5e | KONRAD Frederic | |
1505 | 0a2acf5e | KONRAD Frederic | static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) |
1506 | 0a2acf5e | KONRAD Frederic | { |
1507 | 0a2acf5e | KONRAD Frederic | BusClass *bus_class = BUS_CLASS(klass); |
1508 | 0a2acf5e | KONRAD Frederic | VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); |
1509 | 0a2acf5e | KONRAD Frederic | bus_class->max_dev = 1;
|
1510 | 0a2acf5e | KONRAD Frederic | k->notify = virtio_pci_notify; |
1511 | 0a2acf5e | KONRAD Frederic | k->save_config = virtio_pci_save_config; |
1512 | 0a2acf5e | KONRAD Frederic | k->load_config = virtio_pci_load_config; |
1513 | 0a2acf5e | KONRAD Frederic | k->save_queue = virtio_pci_save_queue; |
1514 | 0a2acf5e | KONRAD Frederic | k->load_queue = virtio_pci_load_queue; |
1515 | 0a2acf5e | KONRAD Frederic | k->get_features = virtio_pci_get_features; |
1516 | 0a2acf5e | KONRAD Frederic | k->query_guest_notifiers = virtio_pci_query_guest_notifiers; |
1517 | 0a2acf5e | KONRAD Frederic | k->set_host_notifier = virtio_pci_set_host_notifier; |
1518 | 0a2acf5e | KONRAD Frederic | k->set_guest_notifiers = virtio_pci_set_guest_notifiers; |
1519 | 0a2acf5e | KONRAD Frederic | k->vmstate_change = virtio_pci_vmstate_change; |
1520 | 085bccb7 | KONRAD Frederic | k->device_plugged = virtio_pci_device_plugged; |
1521 | 0a2acf5e | KONRAD Frederic | } |
1522 | 0a2acf5e | KONRAD Frederic | |
1523 | 0a2acf5e | KONRAD Frederic | static const TypeInfo virtio_pci_bus_info = { |
1524 | 0a2acf5e | KONRAD Frederic | .name = TYPE_VIRTIO_PCI_BUS, |
1525 | 0a2acf5e | KONRAD Frederic | .parent = TYPE_VIRTIO_BUS, |
1526 | 0a2acf5e | KONRAD Frederic | .instance_size = sizeof(VirtioPCIBusState),
|
1527 | 0a2acf5e | KONRAD Frederic | .class_init = virtio_pci_bus_class_init, |
1528 | 0a2acf5e | KONRAD Frederic | }; |
1529 | 0a2acf5e | KONRAD Frederic | |
1530 | 83f7d43a | Andreas Färber | static void virtio_pci_register_types(void) |
1531 | 53c25cea | Paul Brook | { |
1532 | 16c915ba | Amit Shah | type_register_static(&virtio_rng_info); |
1533 | 0a2acf5e | KONRAD Frederic | type_register_static(&virtio_pci_bus_info); |
1534 | 085bccb7 | KONRAD Frederic | type_register_static(&virtio_pci_info); |
1535 | 60653b28 | Paolo Bonzini | #ifdef CONFIG_VIRTFS
|
1536 | 60653b28 | Paolo Bonzini | type_register_static(&virtio_9p_info); |
1537 | 60653b28 | Paolo Bonzini | #endif
|
1538 | 653ced07 | KONRAD Frederic | type_register_static(&virtio_blk_pci_info); |
1539 | bc7b90a0 | KONRAD Frederic | type_register_static(&virtio_scsi_pci_info); |
1540 | e378e88d | KONRAD Frederic | type_register_static(&virtio_balloon_pci_info); |
1541 | f7f7464a | KONRAD Frederic | type_register_static(&virtio_serial_pci_info); |
1542 | e37da394 | KONRAD Frederic | type_register_static(&virtio_net_pci_info); |
1543 | 53c25cea | Paul Brook | } |
1544 | 53c25cea | Paul Brook | |
1545 | 83f7d43a | Andreas Färber | type_init(virtio_pci_register_types) |