root / hw / pci-hotplug.c @ 7f132a21
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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 | 6f338c34 | aliguori | |
35 | ce88f890 | Juan Quintela | #if defined(TARGET_I386)
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36 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
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37 | c59c7ea9 | Mark McLoughlin | const char *devaddr, |
38 | c59c7ea9 | Mark McLoughlin | const char *opts_str) |
39 | 6f338c34 | aliguori | { |
40 | c59c7ea9 | Mark McLoughlin | QemuOpts *opts; |
41 | 53e0d8af | Gerd Hoffmann | PCIBus *bus; |
42 | 53e0d8af | Gerd Hoffmann | int ret, devfn;
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43 | 53e0d8af | Gerd Hoffmann | |
44 | 53e0d8af | Gerd Hoffmann | bus = pci_get_bus_devfn(&devfn, devaddr); |
45 | 53e0d8af | Gerd Hoffmann | if (!bus) {
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46 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
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47 | 53e0d8af | Gerd Hoffmann | return NULL; |
48 | 53e0d8af | Gerd Hoffmann | } |
49 | 53e0d8af | Gerd Hoffmann | if (!((BusState*)bus)->allow_hotplug) {
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50 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "PCI bus doesn't support hotplug\n");
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51 | 53e0d8af | Gerd Hoffmann | return NULL; |
52 | 53e0d8af | Gerd Hoffmann | } |
53 | 6f338c34 | aliguori | |
54 | 8212c64f | Markus Armbruster | opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", 0); |
55 | c59c7ea9 | Mark McLoughlin | if (!opts) {
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56 | c59c7ea9 | Mark McLoughlin | return NULL; |
57 | c59c7ea9 | Mark McLoughlin | } |
58 | c59c7ea9 | Mark McLoughlin | |
59 | c59c7ea9 | Mark McLoughlin | qemu_opt_set(opts, "type", "nic"); |
60 | c59c7ea9 | Mark McLoughlin | |
61 | f6b134ac | Mark McLoughlin | ret = net_client_init(mon, opts, 0);
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62 | eefb4091 | aliguori | if (ret < 0) |
63 | 6f338c34 | aliguori | return NULL; |
64 | 5607c388 | Markus Armbruster | if (nd_table[ret].devaddr) {
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65 | 5607c388 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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66 | 5607c388 | Markus Armbruster | return NULL; |
67 | 5607c388 | Markus Armbruster | } |
68 | 1f5f6638 | Markus Armbruster | return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
69 | 6f338c34 | aliguori | } |
70 | 6f338c34 | aliguori | |
71 | 6fdb03d5 | Markus Armbruster | static int scsi_hot_add(Monitor *mon, DeviceState *adapter, |
72 | 6fdb03d5 | Markus Armbruster | DriveInfo *dinfo, int printinfo)
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73 | 30d335d6 | Gerd Hoffmann | { |
74 | 30d335d6 | Gerd Hoffmann | SCSIBus *scsibus; |
75 | 30d335d6 | Gerd Hoffmann | SCSIDevice *scsidev; |
76 | 30d335d6 | Gerd Hoffmann | |
77 | 30d335d6 | Gerd Hoffmann | scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus)); |
78 | 30d335d6 | Gerd Hoffmann | if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) { |
79 | 1ecda02b | Markus Armbruster | error_report("Device is not a SCSI adapter");
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80 | 30d335d6 | Gerd Hoffmann | return -1; |
81 | 30d335d6 | Gerd Hoffmann | } |
82 | 30d335d6 | Gerd Hoffmann | |
83 | 30d335d6 | Gerd Hoffmann | /*
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84 | 30d335d6 | Gerd Hoffmann | * drive_init() tries to find a default for dinfo->unit. Doesn't
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85 | 30d335d6 | Gerd Hoffmann | * work at all for hotplug though as we assign the device to a
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86 | 30d335d6 | Gerd Hoffmann | * specific bus instead of the first bus with spare scsi ids.
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87 | 30d335d6 | Gerd Hoffmann | *
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88 | 30d335d6 | Gerd Hoffmann | * Ditch the calculated value and reload from option string (if
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89 | 30d335d6 | Gerd Hoffmann | * specified).
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90 | 30d335d6 | Gerd Hoffmann | */
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91 | 30d335d6 | Gerd Hoffmann | dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1); |
92 | 30d335d6 | Gerd Hoffmann | scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit); |
93 | 11f4d7f4 | Gerd Hoffmann | dinfo->unit = scsidev->id; |
94 | 30d335d6 | Gerd Hoffmann | |
95 | 30d335d6 | Gerd Hoffmann | if (printinfo)
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96 | 6fdb03d5 | Markus Armbruster | monitor_printf(mon, "OK bus %d, unit %d\n",
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97 | 6fdb03d5 | Markus Armbruster | scsibus->busnr, scsidev->id); |
98 | 30d335d6 | Gerd Hoffmann | return 0; |
99 | 30d335d6 | Gerd Hoffmann | } |
100 | 30d335d6 | Gerd Hoffmann | |
101 | f18c16de | Luiz Capitulino | void drive_hot_add(Monitor *mon, const QDict *qdict) |
102 | 6f338c34 | aliguori | { |
103 | 6f338c34 | aliguori | int dom, pci_bus;
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104 | 6f338c34 | aliguori | unsigned slot;
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105 | 7f5b7d3e | Blue Swirl | int type;
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106 | 6f338c34 | aliguori | PCIDevice *dev; |
107 | 4db49dc0 | Gerd Hoffmann | DriveInfo *dinfo = NULL;
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108 | f18c16de | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
109 | f18c16de | Luiz Capitulino | const char *opts = qdict_get_str(qdict, "opts"); |
110 | 6f338c34 | aliguori | |
111 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
112 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
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113 | 4db49dc0 | Gerd Hoffmann | goto err;
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114 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
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115 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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116 | 4db49dc0 | Gerd Hoffmann | goto err;
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117 | c2cc47a4 | Markus Armbruster | } |
118 | 751c6a17 | Gerd Hoffmann | type = dinfo->type; |
119 | 6f338c34 | aliguori | |
120 | 6f338c34 | aliguori | switch (type) {
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121 | 6f338c34 | aliguori | case IF_SCSI:
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122 | 4db49dc0 | Gerd Hoffmann | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
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123 | 4db49dc0 | Gerd Hoffmann | goto err;
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124 | 4db49dc0 | Gerd Hoffmann | } |
125 | e075e788 | Isaku Yamahata | dev = pci_find_device(pci_find_root_bus(dom), pci_bus, slot, 0);
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126 | 4db49dc0 | Gerd Hoffmann | if (!dev) {
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127 | 4db49dc0 | Gerd Hoffmann | monitor_printf(mon, "no pci device with address %s\n", pci_addr);
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128 | 4db49dc0 | Gerd Hoffmann | goto err;
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129 | 4db49dc0 | Gerd Hoffmann | } |
130 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) { |
131 | 30d335d6 | Gerd Hoffmann | goto err;
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132 | 30d335d6 | Gerd Hoffmann | } |
133 | 6f338c34 | aliguori | break;
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134 | 7101174e | Gerd Hoffmann | case IF_NONE:
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135 | 7101174e | Gerd Hoffmann | monitor_printf(mon, "OK\n");
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136 | 7101174e | Gerd Hoffmann | break;
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137 | 6f338c34 | aliguori | default:
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138 | 376253ec | aliguori | monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
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139 | 4db49dc0 | Gerd Hoffmann | goto err;
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140 | 6f338c34 | aliguori | } |
141 | 4db49dc0 | Gerd Hoffmann | return;
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142 | 6f338c34 | aliguori | |
143 | 4db49dc0 | Gerd Hoffmann | err:
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144 | 4db49dc0 | Gerd Hoffmann | if (dinfo)
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145 | 4db49dc0 | Gerd Hoffmann | drive_uninit(dinfo); |
146 | 6f338c34 | aliguori | return;
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147 | 6f338c34 | aliguori | } |
148 | 6f338c34 | aliguori | |
149 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
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150 | 1f5f6638 | Markus Armbruster | const char *devaddr, |
151 | 376253ec | aliguori | const char *opts) |
152 | 6f338c34 | aliguori | { |
153 | 1f5f6638 | Markus Armbruster | PCIDevice *dev; |
154 | 06c79f4e | Sebastian Herbszt | DriveInfo *dinfo = NULL;
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155 | 751c6a17 | Gerd Hoffmann | int type = -1; |
156 | 6f338c34 | aliguori | char buf[128]; |
157 | 49bd1458 | Markus Armbruster | PCIBus *bus; |
158 | 49bd1458 | Markus Armbruster | int devfn;
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159 | 6f338c34 | aliguori | |
160 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "if", opts)) { |
161 | 6f338c34 | aliguori | if (!strcmp(buf, "scsi")) |
162 | 6f338c34 | aliguori | type = IF_SCSI; |
163 | 6f338c34 | aliguori | else if (!strcmp(buf, "virtio")) { |
164 | 6f338c34 | aliguori | type = IF_VIRTIO; |
165 | 8707ecca | aliguori | } else {
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166 | 8707ecca | aliguori | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
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167 | 1f5f6638 | Markus Armbruster | return NULL; |
168 | 6f338c34 | aliguori | } |
169 | 6f338c34 | aliguori | } else {
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170 | 376253ec | aliguori | monitor_printf(mon, "no if= specified\n");
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171 | 1f5f6638 | Markus Armbruster | return NULL; |
172 | 6f338c34 | aliguori | } |
173 | 6f338c34 | aliguori | |
174 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "file", opts)) { |
175 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
176 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
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177 | 1f5f6638 | Markus Armbruster | return NULL; |
178 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
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179 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
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180 | c2cc47a4 | Markus Armbruster | return NULL; |
181 | c2cc47a4 | Markus Armbruster | } |
182 | 7432ff5d | Blue Swirl | } else {
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183 | 7432ff5d | Blue Swirl | dinfo = NULL;
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184 | 6f338c34 | aliguori | } |
185 | 6f338c34 | aliguori | |
186 | 49bd1458 | Markus Armbruster | bus = pci_get_bus_devfn(&devfn, devaddr); |
187 | 49bd1458 | Markus Armbruster | if (!bus) {
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188 | 49bd1458 | Markus Armbruster | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
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189 | 49bd1458 | Markus Armbruster | return NULL; |
190 | 49bd1458 | Markus Armbruster | } |
191 | 53e0d8af | Gerd Hoffmann | if (!((BusState*)bus)->allow_hotplug) {
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192 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "PCI bus doesn't support hotplug\n");
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193 | 53e0d8af | Gerd Hoffmann | return NULL; |
194 | 53e0d8af | Gerd Hoffmann | } |
195 | 49bd1458 | Markus Armbruster | |
196 | 6f338c34 | aliguori | switch (type) {
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197 | 6f338c34 | aliguori | case IF_SCSI:
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198 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "lsi53c895a");
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199 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
200 | 5b684b5a | Gerd Hoffmann | dev = NULL;
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201 | ec7efac4 | Daniel P. Berrange | if (dev && dinfo) {
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202 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) { |
203 | 30d335d6 | Gerd Hoffmann | qdev_unplug(&dev->qdev); |
204 | 30d335d6 | Gerd Hoffmann | dev = NULL;
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205 | 30d335d6 | Gerd Hoffmann | } |
206 | 5b684b5a | Gerd Hoffmann | } |
207 | 6f338c34 | aliguori | break;
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208 | 6f338c34 | aliguori | case IF_VIRTIO:
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209 | 7432ff5d | Blue Swirl | if (!dinfo) {
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210 | 7432ff5d | Blue Swirl | monitor_printf(mon, "virtio requires a backing file/device.\n");
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211 | 7432ff5d | Blue Swirl | return NULL; |
212 | 7432ff5d | Blue Swirl | } |
213 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "virtio-blk-pci");
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214 | d176c495 | Gerd Hoffmann | qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
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215 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
216 | 5b684b5a | Gerd Hoffmann | dev = NULL;
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217 | 6f338c34 | aliguori | break;
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218 | 1f5f6638 | Markus Armbruster | default:
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219 | 1f5f6638 | Markus Armbruster | dev = NULL;
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220 | 6f338c34 | aliguori | } |
221 | 1f5f6638 | Markus Armbruster | return dev;
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222 | 6f338c34 | aliguori | } |
223 | 6f338c34 | aliguori | |
224 | 6c6a58ae | Markus Armbruster | void pci_device_hot_add(Monitor *mon, const QDict *qdict) |
225 | 6f338c34 | aliguori | { |
226 | 6f338c34 | aliguori | PCIDevice *dev = NULL;
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227 | 1d4daa91 | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
228 | 1d4daa91 | Luiz Capitulino | const char *type = qdict_get_str(qdict, "type"); |
229 | 1d4daa91 | Luiz Capitulino | const char *opts = qdict_get_try_str(qdict, "opts"); |
230 | 6f338c34 | aliguori | |
231 | e9283f8b | Jan Kiszka | /* strip legacy tag */
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232 | e9283f8b | Jan Kiszka | if (!strncmp(pci_addr, "pci_addr=", 9)) { |
233 | e9283f8b | Jan Kiszka | pci_addr += 9;
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234 | 6f338c34 | aliguori | } |
235 | 6f338c34 | aliguori | |
236 | a62acdc0 | Jan Kiszka | if (!opts) {
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237 | a62acdc0 | Jan Kiszka | opts = "";
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238 | a62acdc0 | Jan Kiszka | } |
239 | a62acdc0 | Jan Kiszka | |
240 | e9283f8b | Jan Kiszka | if (!strcmp(pci_addr, "auto")) |
241 | e9283f8b | Jan Kiszka | pci_addr = NULL;
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242 | 6f338c34 | aliguori | |
243 | 395560c8 | Luiz Capitulino | if (strcmp(type, "nic") == 0) { |
244 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
245 | 395560c8 | Luiz Capitulino | } else if (strcmp(type, "storage") == 0) { |
246 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
247 | 395560c8 | Luiz Capitulino | } else {
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248 | 376253ec | aliguori | monitor_printf(mon, "invalid type: %s\n", type);
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249 | 395560c8 | Luiz Capitulino | } |
250 | 6f338c34 | aliguori | |
251 | 6f338c34 | aliguori | if (dev) {
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252 | 6c6a58ae | Markus Armbruster | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
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253 | e075e788 | Isaku Yamahata | pci_find_domain(dev->bus), |
254 | e075e788 | Isaku Yamahata | pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), |
255 | 6c6a58ae | Markus Armbruster | PCI_FUNC(dev->devfn)); |
256 | 6c6a58ae | Markus Armbruster | } else
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257 | 376253ec | aliguori | monitor_printf(mon, "failed to add %s\n", opts);
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258 | 6f338c34 | aliguori | } |
259 | 6f338c34 | aliguori | #endif
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260 | 6f338c34 | aliguori | |
261 | 053801bc | Luiz Capitulino | int pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
262 | 6f338c34 | aliguori | { |
263 | 6f338c34 | aliguori | PCIDevice *d; |
264 | 6f338c34 | aliguori | int dom, bus;
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265 | 6f338c34 | aliguori | unsigned slot;
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266 | 6f338c34 | aliguori | |
267 | e9283f8b | Jan Kiszka | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
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268 | 053801bc | Luiz Capitulino | return -1; |
269 | 6f338c34 | aliguori | } |
270 | 6f338c34 | aliguori | |
271 | e075e788 | Isaku Yamahata | d = pci_find_device(pci_find_root_bus(dom), bus, slot, 0);
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272 | 6f338c34 | aliguori | if (!d) {
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273 | 376253ec | aliguori | monitor_printf(mon, "slot %d empty\n", slot);
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274 | 053801bc | Luiz Capitulino | return -1; |
275 | 6f338c34 | aliguori | } |
276 | 053801bc | Luiz Capitulino | return qdev_unplug(&d->qdev);
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277 | 6f338c34 | aliguori | } |
278 | 6f338c34 | aliguori | |
279 | b752daf0 | Markus Armbruster | void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict) |
280 | 38183186 | Luiz Capitulino | { |
281 | b752daf0 | Markus Armbruster | pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
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282 | 38183186 | Luiz Capitulino | } |