root / hw / pci-hotplug.c @ a8a358bf
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1 | 6f338c34 | aliguori | /*
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2 | 6f338c34 | aliguori | * QEMU PCI hotplug support
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3 | 6f338c34 | aliguori | *
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4 | 6f338c34 | aliguori | * Copyright (c) 2004 Fabrice Bellard
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5 | 6f338c34 | aliguori | *
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6 | 6f338c34 | aliguori | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 6f338c34 | aliguori | * of this software and associated documentation files (the "Software"), to deal
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8 | 6f338c34 | aliguori | * in the Software without restriction, including without limitation the rights
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9 | 6f338c34 | aliguori | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 6f338c34 | aliguori | * copies of the Software, and to permit persons to whom the Software is
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11 | 6f338c34 | aliguori | * furnished to do so, subject to the following conditions:
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12 | 6f338c34 | aliguori | *
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13 | 6f338c34 | aliguori | * The above copyright notice and this permission notice shall be included in
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14 | 6f338c34 | aliguori | * all copies or substantial portions of the Software.
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15 | 6f338c34 | aliguori | *
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16 | 6f338c34 | aliguori | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 6f338c34 | aliguori | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 6f338c34 | aliguori | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 6f338c34 | aliguori | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 6f338c34 | aliguori | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 6f338c34 | aliguori | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 6f338c34 | aliguori | * THE SOFTWARE.
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23 | 6f338c34 | aliguori | */
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24 | 6f338c34 | aliguori | |
25 | 6f338c34 | aliguori | #include "hw.h" |
26 | 6f338c34 | aliguori | #include "boards.h" |
27 | 6f338c34 | aliguori | #include "pci.h" |
28 | 6f338c34 | aliguori | #include "net.h" |
29 | 6f338c34 | aliguori | #include "sysemu.h" |
30 | 6f338c34 | aliguori | #include "pc.h" |
31 | 376253ec | aliguori | #include "monitor.h" |
32 | 6f338c34 | aliguori | #include "block_int.h" |
33 | 6f338c34 | aliguori | #include "virtio-blk.h" |
34 | 6f338c34 | aliguori | |
35 | 6f338c34 | aliguori | #if defined(TARGET_I386) || defined(TARGET_X86_64)
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36 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
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37 | 1f5f6638 | Markus Armbruster | const char *devaddr, const char *opts) |
38 | 6f338c34 | aliguori | { |
39 | 6f338c34 | aliguori | int ret;
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40 | 6f338c34 | aliguori | |
41 | 10ae5a7a | Jan Kiszka | ret = net_client_init(mon, "nic", opts);
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42 | eefb4091 | aliguori | if (ret < 0) |
43 | 6f338c34 | aliguori | return NULL; |
44 | 5607c388 | Markus Armbruster | if (nd_table[ret].devaddr) {
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45 | 5607c388 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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46 | 5607c388 | Markus Armbruster | return NULL; |
47 | 5607c388 | Markus Armbruster | } |
48 | 1f5f6638 | Markus Armbruster | return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
49 | 6f338c34 | aliguori | } |
50 | 6f338c34 | aliguori | |
51 | 376253ec | aliguori | void drive_hot_add(Monitor *mon, const char *pci_addr, const char *opts) |
52 | 6f338c34 | aliguori | { |
53 | 6f338c34 | aliguori | int dom, pci_bus;
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54 | 6f338c34 | aliguori | unsigned slot;
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55 | 751c6a17 | Gerd Hoffmann | int type, bus;
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56 | 6f338c34 | aliguori | int success = 0; |
57 | 6f338c34 | aliguori | PCIDevice *dev; |
58 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
59 | 6f338c34 | aliguori | |
60 | e9283f8b | Jan Kiszka | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
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61 | 6f338c34 | aliguori | return;
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62 | 6f338c34 | aliguori | } |
63 | 6f338c34 | aliguori | |
64 | 6f338c34 | aliguori | dev = pci_find_device(pci_bus, slot, 0);
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65 | 6f338c34 | aliguori | if (!dev) {
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66 | 376253ec | aliguori | monitor_printf(mon, "no pci device with address %s\n", pci_addr);
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67 | 6f338c34 | aliguori | return;
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68 | 6f338c34 | aliguori | } |
69 | 6f338c34 | aliguori | |
70 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
71 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
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72 | 6f338c34 | aliguori | return;
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73 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
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74 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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75 | c2cc47a4 | Markus Armbruster | return;
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76 | c2cc47a4 | Markus Armbruster | } |
77 | 751c6a17 | Gerd Hoffmann | type = dinfo->type; |
78 | 6f338c34 | aliguori | bus = drive_get_max_bus (type); |
79 | 6f338c34 | aliguori | |
80 | 6f338c34 | aliguori | switch (type) {
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81 | 6f338c34 | aliguori | case IF_SCSI:
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82 | 6f338c34 | aliguori | success = 1;
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83 | 751c6a17 | Gerd Hoffmann | lsi_scsi_attach(&dev->qdev, dinfo->bdrv, |
84 | 751c6a17 | Gerd Hoffmann | dinfo->unit); |
85 | 6f338c34 | aliguori | break;
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86 | 6f338c34 | aliguori | default:
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87 | 376253ec | aliguori | monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
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88 | 6f338c34 | aliguori | } |
89 | 6f338c34 | aliguori | |
90 | 6f338c34 | aliguori | if (success)
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91 | 376253ec | aliguori | monitor_printf(mon, "OK bus %d, unit %d\n",
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92 | 751c6a17 | Gerd Hoffmann | dinfo->bus, |
93 | 751c6a17 | Gerd Hoffmann | dinfo->unit); |
94 | 6f338c34 | aliguori | return;
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95 | 6f338c34 | aliguori | } |
96 | 6f338c34 | aliguori | |
97 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
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98 | 1f5f6638 | Markus Armbruster | const char *devaddr, |
99 | 376253ec | aliguori | const char *opts) |
100 | 6f338c34 | aliguori | { |
101 | 1f5f6638 | Markus Armbruster | PCIDevice *dev; |
102 | 751c6a17 | Gerd Hoffmann | DriveInfo *dinfo; |
103 | 751c6a17 | Gerd Hoffmann | int type = -1; |
104 | 6f338c34 | aliguori | char buf[128]; |
105 | 6f338c34 | aliguori | |
106 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "if", opts)) { |
107 | 6f338c34 | aliguori | if (!strcmp(buf, "scsi")) |
108 | 6f338c34 | aliguori | type = IF_SCSI; |
109 | 6f338c34 | aliguori | else if (!strcmp(buf, "virtio")) { |
110 | 6f338c34 | aliguori | type = IF_VIRTIO; |
111 | 8707ecca | aliguori | } else {
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112 | 8707ecca | aliguori | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
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113 | 1f5f6638 | Markus Armbruster | return NULL; |
114 | 6f338c34 | aliguori | } |
115 | 6f338c34 | aliguori | } else {
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116 | 376253ec | aliguori | monitor_printf(mon, "no if= specified\n");
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117 | 1f5f6638 | Markus Armbruster | return NULL; |
118 | 6f338c34 | aliguori | } |
119 | 6f338c34 | aliguori | |
120 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "file", opts)) { |
121 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
122 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
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123 | 1f5f6638 | Markus Armbruster | return NULL; |
124 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
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125 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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126 | c2cc47a4 | Markus Armbruster | return NULL; |
127 | c2cc47a4 | Markus Armbruster | } |
128 | 7432ff5d | Blue Swirl | } else {
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129 | 7432ff5d | Blue Swirl | dinfo = NULL;
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130 | 6f338c34 | aliguori | } |
131 | 6f338c34 | aliguori | |
132 | 6f338c34 | aliguori | switch (type) {
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133 | 6f338c34 | aliguori | case IF_SCSI:
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134 | 1f5f6638 | Markus Armbruster | dev = pci_create("lsi53c895a", devaddr);
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135 | 6f338c34 | aliguori | break;
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136 | 6f338c34 | aliguori | case IF_VIRTIO:
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137 | 7432ff5d | Blue Swirl | if (!dinfo) {
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138 | 7432ff5d | Blue Swirl | monitor_printf(mon, "virtio requires a backing file/device.\n");
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139 | 7432ff5d | Blue Swirl | return NULL; |
140 | 7432ff5d | Blue Swirl | } |
141 | 1f5f6638 | Markus Armbruster | dev = pci_create("virtio-blk-pci", devaddr);
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142 | d176c495 | Gerd Hoffmann | qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
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143 | 6f338c34 | aliguori | break;
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144 | 1f5f6638 | Markus Armbruster | default:
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145 | 1f5f6638 | Markus Armbruster | dev = NULL;
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146 | 6f338c34 | aliguori | } |
147 | 1f5f6638 | Markus Armbruster | if (dev)
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148 | 1f5f6638 | Markus Armbruster | qdev_init(&dev->qdev); |
149 | 1f5f6638 | Markus Armbruster | return dev;
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150 | 6f338c34 | aliguori | } |
151 | 6f338c34 | aliguori | |
152 | 376253ec | aliguori | void pci_device_hot_add(Monitor *mon, const char *pci_addr, const char *type, |
153 | 376253ec | aliguori | const char *opts) |
154 | 6f338c34 | aliguori | { |
155 | 6f338c34 | aliguori | PCIDevice *dev = NULL;
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156 | 6f338c34 | aliguori | |
157 | e9283f8b | Jan Kiszka | /* strip legacy tag */
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158 | e9283f8b | Jan Kiszka | if (!strncmp(pci_addr, "pci_addr=", 9)) { |
159 | e9283f8b | Jan Kiszka | pci_addr += 9;
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160 | 6f338c34 | aliguori | } |
161 | 6f338c34 | aliguori | |
162 | a62acdc0 | Jan Kiszka | if (!opts) {
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163 | a62acdc0 | Jan Kiszka | opts = "";
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164 | a62acdc0 | Jan Kiszka | } |
165 | a62acdc0 | Jan Kiszka | |
166 | e9283f8b | Jan Kiszka | if (!strcmp(pci_addr, "auto")) |
167 | e9283f8b | Jan Kiszka | pci_addr = NULL;
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168 | 6f338c34 | aliguori | |
169 | 6f338c34 | aliguori | if (strcmp(type, "nic") == 0) |
170 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
171 | 6f338c34 | aliguori | else if (strcmp(type, "storage") == 0) |
172 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
173 | 6f338c34 | aliguori | else
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174 | 376253ec | aliguori | monitor_printf(mon, "invalid type: %s\n", type);
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175 | 6f338c34 | aliguori | |
176 | 6f338c34 | aliguori | if (dev) {
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177 | 1f5f6638 | Markus Armbruster | qemu_system_device_hot_add(pci_bus_num(dev->bus), |
178 | 1f5f6638 | Markus Armbruster | PCI_SLOT(dev->devfn), 1);
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179 | 376253ec | aliguori | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
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180 | 376253ec | aliguori | 0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
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181 | 376253ec | aliguori | PCI_FUNC(dev->devfn)); |
182 | 6f338c34 | aliguori | } else
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183 | 376253ec | aliguori | monitor_printf(mon, "failed to add %s\n", opts);
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184 | 6f338c34 | aliguori | } |
185 | 6f338c34 | aliguori | #endif
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186 | 6f338c34 | aliguori | |
187 | 376253ec | aliguori | void pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
188 | 6f338c34 | aliguori | { |
189 | 6f338c34 | aliguori | PCIDevice *d; |
190 | 6f338c34 | aliguori | int dom, bus;
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191 | 6f338c34 | aliguori | unsigned slot;
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192 | 6f338c34 | aliguori | |
193 | e9283f8b | Jan Kiszka | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
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194 | 6f338c34 | aliguori | return;
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195 | 6f338c34 | aliguori | } |
196 | 6f338c34 | aliguori | |
197 | 6f338c34 | aliguori | d = pci_find_device(bus, slot, 0);
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198 | 6f338c34 | aliguori | if (!d) {
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199 | 376253ec | aliguori | monitor_printf(mon, "slot %d empty\n", slot);
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200 | 6f338c34 | aliguori | return;
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201 | 6f338c34 | aliguori | } |
202 | 6f338c34 | aliguori | |
203 | 6f338c34 | aliguori | qemu_system_device_hot_add(bus, slot, 0);
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204 | 6f338c34 | aliguori | } |
205 | 6f338c34 | aliguori | |
206 | 6f338c34 | aliguori | static int pci_match_fn(void *dev_private, void *arg) |
207 | 6f338c34 | aliguori | { |
208 | 6f338c34 | aliguori | PCIDevice *dev = dev_private; |
209 | 6f338c34 | aliguori | PCIDevice *match = arg; |
210 | 6f338c34 | aliguori | |
211 | 6f338c34 | aliguori | return (dev == match);
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212 | 6f338c34 | aliguori | } |
213 | 6f338c34 | aliguori | |
214 | 6f338c34 | aliguori | /*
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215 | 6f338c34 | aliguori | * OS has executed _EJ0 method, we now can remove the device
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216 | 6f338c34 | aliguori | */
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217 | 6f338c34 | aliguori | void pci_device_hot_remove_success(int pcibus, int slot) |
218 | 6f338c34 | aliguori | { |
219 | 6f338c34 | aliguori | PCIDevice *d = pci_find_device(pcibus, slot, 0);
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220 | 6f338c34 | aliguori | int class_code;
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221 | 6f338c34 | aliguori | |
222 | 6f338c34 | aliguori | if (!d) {
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223 | 376253ec | aliguori | monitor_printf(cur_mon, "invalid slot %d\n", slot);
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224 | 6f338c34 | aliguori | return;
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225 | 6f338c34 | aliguori | } |
226 | 6f338c34 | aliguori | |
227 | 6f338c34 | aliguori | class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1); |
228 | 6f338c34 | aliguori | |
229 | 6f338c34 | aliguori | switch(class_code) {
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230 | 6f338c34 | aliguori | case PCI_BASE_CLASS_STORAGE:
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231 | 6f338c34 | aliguori | destroy_bdrvs(pci_match_fn, d); |
232 | 6f338c34 | aliguori | break;
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233 | 6f338c34 | aliguori | case PCI_BASE_CLASS_NETWORK:
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234 | 6f338c34 | aliguori | destroy_nic(pci_match_fn, d); |
235 | 6f338c34 | aliguori | break;
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236 | 6f338c34 | aliguori | } |
237 | 6f338c34 | aliguori | |
238 | 6f338c34 | aliguori | pci_unregister_device(d); |
239 | 6f338c34 | aliguori | } |