root / hw / pci-hotplug.c @ 136be99e
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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 "pc.h" |
30 | 376253ec | aliguori | #include "monitor.h" |
31 | 43b443b6 | Gerd Hoffmann | #include "scsi.h" |
32 | 6f338c34 | aliguori | #include "virtio-blk.h" |
33 | c59c7ea9 | Mark McLoughlin | #include "qemu-config.h" |
34 | 2446333c | Blue Swirl | #include "blockdev.h" |
35 | 56f9107e | Luiz Capitulino | #include "error.h" |
36 | 6f338c34 | aliguori | |
37 | ce88f890 | Juan Quintela | #if defined(TARGET_I386)
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38 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
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39 | c59c7ea9 | Mark McLoughlin | const char *devaddr, |
40 | c59c7ea9 | Mark McLoughlin | const char *opts_str) |
41 | 6f338c34 | aliguori | { |
42 | c59c7ea9 | Mark McLoughlin | QemuOpts *opts; |
43 | 53e0d8af | Gerd Hoffmann | PCIBus *bus; |
44 | 53e0d8af | Gerd Hoffmann | int ret, devfn;
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45 | 53e0d8af | Gerd Hoffmann | |
46 | 53e0d8af | Gerd Hoffmann | bus = pci_get_bus_devfn(&devfn, devaddr); |
47 | 53e0d8af | Gerd Hoffmann | if (!bus) {
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48 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
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49 | 53e0d8af | Gerd Hoffmann | return NULL; |
50 | 53e0d8af | Gerd Hoffmann | } |
51 | 53e0d8af | Gerd Hoffmann | if (!((BusState*)bus)->allow_hotplug) {
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52 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "PCI bus doesn't support hotplug\n");
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53 | 53e0d8af | Gerd Hoffmann | return NULL; |
54 | 53e0d8af | Gerd Hoffmann | } |
55 | 6f338c34 | aliguori | |
56 | 3329f07b | Gerd Hoffmann | opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
57 | c59c7ea9 | Mark McLoughlin | if (!opts) {
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58 | c59c7ea9 | Mark McLoughlin | return NULL; |
59 | c59c7ea9 | Mark McLoughlin | } |
60 | c59c7ea9 | Mark McLoughlin | |
61 | c59c7ea9 | Mark McLoughlin | qemu_opt_set(opts, "type", "nic"); |
62 | c59c7ea9 | Mark McLoughlin | |
63 | f6b134ac | Mark McLoughlin | ret = net_client_init(mon, opts, 0);
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64 | eefb4091 | aliguori | if (ret < 0) |
65 | 6f338c34 | aliguori | return NULL; |
66 | 5607c388 | Markus Armbruster | if (nd_table[ret].devaddr) {
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67 | 5607c388 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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68 | 5607c388 | Markus Armbruster | return NULL; |
69 | 5607c388 | Markus Armbruster | } |
70 | 1f5f6638 | Markus Armbruster | return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
71 | 6f338c34 | aliguori | } |
72 | 6f338c34 | aliguori | |
73 | 6fdb03d5 | Markus Armbruster | static int scsi_hot_add(Monitor *mon, DeviceState *adapter, |
74 | 6fdb03d5 | Markus Armbruster | DriveInfo *dinfo, int printinfo)
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75 | 30d335d6 | Gerd Hoffmann | { |
76 | 30d335d6 | Gerd Hoffmann | SCSIBus *scsibus; |
77 | 30d335d6 | Gerd Hoffmann | SCSIDevice *scsidev; |
78 | 30d335d6 | Gerd Hoffmann | |
79 | 30d335d6 | Gerd Hoffmann | scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus)); |
80 | 30d335d6 | Gerd Hoffmann | if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) { |
81 | 1ecda02b | Markus Armbruster | error_report("Device is not a SCSI adapter");
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82 | 30d335d6 | Gerd Hoffmann | return -1; |
83 | 30d335d6 | Gerd Hoffmann | } |
84 | 30d335d6 | Gerd Hoffmann | |
85 | 30d335d6 | Gerd Hoffmann | /*
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86 | 30d335d6 | Gerd Hoffmann | * drive_init() tries to find a default for dinfo->unit. Doesn't
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87 | 30d335d6 | Gerd Hoffmann | * work at all for hotplug though as we assign the device to a
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88 | 30d335d6 | Gerd Hoffmann | * specific bus instead of the first bus with spare scsi ids.
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89 | 30d335d6 | Gerd Hoffmann | *
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90 | 30d335d6 | Gerd Hoffmann | * Ditch the calculated value and reload from option string (if
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91 | 30d335d6 | Gerd Hoffmann | * specified).
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92 | 30d335d6 | Gerd Hoffmann | */
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93 | 30d335d6 | Gerd Hoffmann | dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1); |
94 | 31e1ea3e | Markus Armbruster | dinfo->bus = scsibus->busnr; |
95 | ce4e7e46 | Paolo Bonzini | scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit, |
96 | ce4e7e46 | Paolo Bonzini | false, -1); |
97 | fa66b909 | Markus Armbruster | if (!scsidev) {
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98 | fa66b909 | Markus Armbruster | return -1; |
99 | fa66b909 | Markus Armbruster | } |
100 | 11f4d7f4 | Gerd Hoffmann | dinfo->unit = scsidev->id; |
101 | 30d335d6 | Gerd Hoffmann | |
102 | 30d335d6 | Gerd Hoffmann | if (printinfo)
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103 | 6fdb03d5 | Markus Armbruster | monitor_printf(mon, "OK bus %d, unit %d\n",
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104 | 6fdb03d5 | Markus Armbruster | scsibus->busnr, scsidev->id); |
105 | 30d335d6 | Gerd Hoffmann | return 0; |
106 | 30d335d6 | Gerd Hoffmann | } |
107 | 30d335d6 | Gerd Hoffmann | |
108 | dd97aa8a | Alexander Graf | int pci_drive_hot_add(Monitor *mon, const QDict *qdict, |
109 | dd97aa8a | Alexander Graf | DriveInfo *dinfo, int type)
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110 | 6f338c34 | aliguori | { |
111 | 6f338c34 | aliguori | int dom, pci_bus;
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112 | 6f338c34 | aliguori | unsigned slot;
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113 | 6f338c34 | aliguori | PCIDevice *dev; |
114 | f18c16de | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
115 | 6f338c34 | aliguori | |
116 | 6f338c34 | aliguori | switch (type) {
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117 | 6f338c34 | aliguori | case IF_SCSI:
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118 | 4db49dc0 | Gerd Hoffmann | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
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119 | 4db49dc0 | Gerd Hoffmann | goto err;
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120 | 4db49dc0 | Gerd Hoffmann | } |
121 | 5256d8bf | Isaku Yamahata | dev = pci_find_device(pci_find_root_bus(dom), pci_bus, |
122 | 5256d8bf | Isaku Yamahata | PCI_DEVFN(slot, 0));
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123 | 4db49dc0 | Gerd Hoffmann | if (!dev) {
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124 | 4db49dc0 | Gerd Hoffmann | monitor_printf(mon, "no pci device with address %s\n", pci_addr);
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125 | 4db49dc0 | Gerd Hoffmann | goto err;
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126 | 4db49dc0 | Gerd Hoffmann | } |
127 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) { |
128 | 30d335d6 | Gerd Hoffmann | goto err;
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129 | 30d335d6 | Gerd Hoffmann | } |
130 | 6f338c34 | aliguori | break;
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131 | 6f338c34 | aliguori | default:
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132 | 376253ec | aliguori | monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
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133 | 4db49dc0 | Gerd Hoffmann | goto err;
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134 | 6f338c34 | aliguori | } |
135 | 6f338c34 | aliguori | |
136 | dd97aa8a | Alexander Graf | return 0; |
137 | 4db49dc0 | Gerd Hoffmann | err:
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138 | dd97aa8a | Alexander Graf | return -1; |
139 | 6f338c34 | aliguori | } |
140 | 6f338c34 | aliguori | |
141 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
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142 | 1f5f6638 | Markus Armbruster | const char *devaddr, |
143 | 376253ec | aliguori | const char *opts) |
144 | 6f338c34 | aliguori | { |
145 | 1f5f6638 | Markus Armbruster | PCIDevice *dev; |
146 | 06c79f4e | Sebastian Herbszt | DriveInfo *dinfo = NULL;
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147 | 751c6a17 | Gerd Hoffmann | int type = -1; |
148 | 6f338c34 | aliguori | char buf[128]; |
149 | 49bd1458 | Markus Armbruster | PCIBus *bus; |
150 | 49bd1458 | Markus Armbruster | int devfn;
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151 | 6f338c34 | aliguori | |
152 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "if", opts)) { |
153 | 6f338c34 | aliguori | if (!strcmp(buf, "scsi")) |
154 | 6f338c34 | aliguori | type = IF_SCSI; |
155 | 6f338c34 | aliguori | else if (!strcmp(buf, "virtio")) { |
156 | 6f338c34 | aliguori | type = IF_VIRTIO; |
157 | 8707ecca | aliguori | } else {
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158 | 8707ecca | aliguori | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
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159 | 1f5f6638 | Markus Armbruster | return NULL; |
160 | 6f338c34 | aliguori | } |
161 | 6f338c34 | aliguori | } else {
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162 | 376253ec | aliguori | monitor_printf(mon, "no if= specified\n");
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163 | 1f5f6638 | Markus Armbruster | return NULL; |
164 | 6f338c34 | aliguori | } |
165 | 6f338c34 | aliguori | |
166 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "file", opts)) { |
167 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
168 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
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169 | 1f5f6638 | Markus Armbruster | return NULL; |
170 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
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171 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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172 | c2cc47a4 | Markus Armbruster | return NULL; |
173 | c2cc47a4 | Markus Armbruster | } |
174 | 7432ff5d | Blue Swirl | } else {
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175 | 7432ff5d | Blue Swirl | dinfo = NULL;
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176 | 6f338c34 | aliguori | } |
177 | 6f338c34 | aliguori | |
178 | 49bd1458 | Markus Armbruster | bus = pci_get_bus_devfn(&devfn, devaddr); |
179 | 49bd1458 | Markus Armbruster | if (!bus) {
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180 | 49bd1458 | Markus Armbruster | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
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181 | 49bd1458 | Markus Armbruster | return NULL; |
182 | 49bd1458 | Markus Armbruster | } |
183 | 53e0d8af | Gerd Hoffmann | if (!((BusState*)bus)->allow_hotplug) {
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184 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "PCI bus doesn't support hotplug\n");
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185 | 53e0d8af | Gerd Hoffmann | return NULL; |
186 | 53e0d8af | Gerd Hoffmann | } |
187 | 49bd1458 | Markus Armbruster | |
188 | 6f338c34 | aliguori | switch (type) {
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189 | 6f338c34 | aliguori | case IF_SCSI:
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190 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "lsi53c895a");
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191 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
192 | 5b684b5a | Gerd Hoffmann | dev = NULL;
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193 | ec7efac4 | Daniel P. Berrange | if (dev && dinfo) {
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194 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) { |
195 | 56f9107e | Luiz Capitulino | qdev_unplug(&dev->qdev, NULL);
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196 | 30d335d6 | Gerd Hoffmann | dev = NULL;
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197 | 30d335d6 | Gerd Hoffmann | } |
198 | 5b684b5a | Gerd Hoffmann | } |
199 | 6f338c34 | aliguori | break;
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200 | 6f338c34 | aliguori | case IF_VIRTIO:
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201 | 7432ff5d | Blue Swirl | if (!dinfo) {
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202 | 7432ff5d | Blue Swirl | monitor_printf(mon, "virtio requires a backing file/device.\n");
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203 | 7432ff5d | Blue Swirl | return NULL; |
204 | 7432ff5d | Blue Swirl | } |
205 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "virtio-blk-pci");
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206 | 18846dee | Markus Armbruster | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
207 | 18846dee | Markus Armbruster | qdev_free(&dev->qdev); |
208 | 18846dee | Markus Armbruster | dev = NULL;
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209 | 18846dee | Markus Armbruster | break;
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210 | 18846dee | Markus Armbruster | } |
211 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
212 | 5b684b5a | Gerd Hoffmann | dev = NULL;
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213 | 6f338c34 | aliguori | break;
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214 | 1f5f6638 | Markus Armbruster | default:
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215 | 1f5f6638 | Markus Armbruster | dev = NULL;
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216 | 6f338c34 | aliguori | } |
217 | 1f5f6638 | Markus Armbruster | return dev;
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218 | 6f338c34 | aliguori | } |
219 | 6f338c34 | aliguori | |
220 | 6c6a58ae | Markus Armbruster | void pci_device_hot_add(Monitor *mon, const QDict *qdict) |
221 | 6f338c34 | aliguori | { |
222 | 6f338c34 | aliguori | PCIDevice *dev = NULL;
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223 | 1d4daa91 | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
224 | 1d4daa91 | Luiz Capitulino | const char *type = qdict_get_str(qdict, "type"); |
225 | 1d4daa91 | Luiz Capitulino | const char *opts = qdict_get_try_str(qdict, "opts"); |
226 | 6f338c34 | aliguori | |
227 | e9283f8b | Jan Kiszka | /* strip legacy tag */
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228 | e9283f8b | Jan Kiszka | if (!strncmp(pci_addr, "pci_addr=", 9)) { |
229 | e9283f8b | Jan Kiszka | pci_addr += 9;
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230 | 6f338c34 | aliguori | } |
231 | 6f338c34 | aliguori | |
232 | a62acdc0 | Jan Kiszka | if (!opts) {
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233 | a62acdc0 | Jan Kiszka | opts = "";
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234 | a62acdc0 | Jan Kiszka | } |
235 | a62acdc0 | Jan Kiszka | |
236 | e9283f8b | Jan Kiszka | if (!strcmp(pci_addr, "auto")) |
237 | e9283f8b | Jan Kiszka | pci_addr = NULL;
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238 | 6f338c34 | aliguori | |
239 | 395560c8 | Luiz Capitulino | if (strcmp(type, "nic") == 0) { |
240 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
241 | 395560c8 | Luiz Capitulino | } else if (strcmp(type, "storage") == 0) { |
242 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
243 | 395560c8 | Luiz Capitulino | } else {
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244 | 376253ec | aliguori | monitor_printf(mon, "invalid type: %s\n", type);
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245 | 395560c8 | Luiz Capitulino | } |
246 | 6f338c34 | aliguori | |
247 | 6f338c34 | aliguori | if (dev) {
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248 | 6c6a58ae | Markus Armbruster | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
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249 | e075e788 | Isaku Yamahata | pci_find_domain(dev->bus), |
250 | e075e788 | Isaku Yamahata | pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), |
251 | 6c6a58ae | Markus Armbruster | PCI_FUNC(dev->devfn)); |
252 | 6c6a58ae | Markus Armbruster | } else
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253 | 376253ec | aliguori | monitor_printf(mon, "failed to add %s\n", opts);
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254 | 6f338c34 | aliguori | } |
255 | 6f338c34 | aliguori | #endif
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256 | 6f338c34 | aliguori | |
257 | f2b07c92 | Isaku Yamahata | static int pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
258 | 6f338c34 | aliguori | { |
259 | 6f338c34 | aliguori | PCIDevice *d; |
260 | 6f338c34 | aliguori | int dom, bus;
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261 | 6f338c34 | aliguori | unsigned slot;
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262 | 56f9107e | Luiz Capitulino | Error *local_err = NULL;
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263 | 6f338c34 | aliguori | |
264 | e9283f8b | Jan Kiszka | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
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265 | 053801bc | Luiz Capitulino | return -1; |
266 | 6f338c34 | aliguori | } |
267 | 6f338c34 | aliguori | |
268 | 5256d8bf | Isaku Yamahata | d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
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269 | 6f338c34 | aliguori | if (!d) {
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270 | 376253ec | aliguori | monitor_printf(mon, "slot %d empty\n", slot);
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271 | 053801bc | Luiz Capitulino | return -1; |
272 | 6f338c34 | aliguori | } |
273 | 56f9107e | Luiz Capitulino | |
274 | 56f9107e | Luiz Capitulino | qdev_unplug(&d->qdev, &local_err); |
275 | 56f9107e | Luiz Capitulino | if (error_is_set(&local_err)) {
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276 | 56f9107e | Luiz Capitulino | monitor_printf(mon, "%s\n", error_get_pretty(local_err));
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277 | 56f9107e | Luiz Capitulino | error_free(local_err); |
278 | 56f9107e | Luiz Capitulino | return -1; |
279 | 56f9107e | Luiz Capitulino | } |
280 | 56f9107e | Luiz Capitulino | |
281 | 56f9107e | Luiz Capitulino | return 0; |
282 | 6f338c34 | aliguori | } |
283 | 6f338c34 | aliguori | |
284 | b752daf0 | Markus Armbruster | void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict) |
285 | 38183186 | Luiz Capitulino | { |
286 | b752daf0 | Markus Armbruster | pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
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287 | 38183186 | Luiz Capitulino | } |