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6f338c34 AL |
1 | /* |
2 | * QEMU PCI hotplug support | |
3 | * | |
4 | * Copyright (c) 2004 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include "hw.h" | |
26 | #include "boards.h" | |
27 | #include "pci.h" | |
28 | #include "net.h" | |
29 | #include "sysemu.h" | |
30 | #include "pc.h" | |
376253ec | 31 | #include "monitor.h" |
6f338c34 AL |
32 | #include "block_int.h" |
33 | #include "virtio-blk.h" | |
34 | ||
35 | #if defined(TARGET_I386) || defined(TARGET_X86_64) | |
1f5f6638 MA |
36 | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon, |
37 | const char *devaddr, const char *opts) | |
6f338c34 AL |
38 | { |
39 | int ret; | |
40 | ||
10ae5a7a | 41 | ret = net_client_init(mon, "nic", opts); |
eefb4091 | 42 | if (ret < 0) |
6f338c34 | 43 | return NULL; |
5607c388 MA |
44 | if (nd_table[ret].devaddr) { |
45 | monitor_printf(mon, "Parameter addr not supported\n"); | |
46 | return NULL; | |
47 | } | |
1f5f6638 | 48 | return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
6f338c34 AL |
49 | } |
50 | ||
376253ec | 51 | void drive_hot_add(Monitor *mon, const char *pci_addr, const char *opts) |
6f338c34 AL |
52 | { |
53 | int dom, pci_bus; | |
54 | unsigned slot; | |
55 | int drive_idx, type, bus; | |
56 | int success = 0; | |
57 | PCIDevice *dev; | |
58 | ||
e9283f8b | 59 | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) { |
6f338c34 AL |
60 | return; |
61 | } | |
62 | ||
63 | dev = pci_find_device(pci_bus, slot, 0); | |
64 | if (!dev) { | |
376253ec | 65 | monitor_printf(mon, "no pci device with address %s\n", pci_addr); |
6f338c34 AL |
66 | return; |
67 | } | |
68 | ||
69 | drive_idx = add_init_drive(opts); | |
70 | if (drive_idx < 0) | |
71 | return; | |
c2cc47a4 MA |
72 | if (drives_table[drive_idx].devaddr) { |
73 | monitor_printf(mon, "Parameter addr not supported\n"); | |
74 | return; | |
75 | } | |
6f338c34 AL |
76 | type = drives_table[drive_idx].type; |
77 | bus = drive_get_max_bus (type); | |
78 | ||
79 | switch (type) { | |
80 | case IF_SCSI: | |
81 | success = 1; | |
9be5dafe PB |
82 | lsi_scsi_attach(&dev->qdev, drives_table[drive_idx].bdrv, |
83 | drives_table[drive_idx].unit); | |
6f338c34 AL |
84 | break; |
85 | default: | |
376253ec | 86 | monitor_printf(mon, "Can't hot-add drive to type %d\n", type); |
6f338c34 AL |
87 | } |
88 | ||
89 | if (success) | |
376253ec AL |
90 | monitor_printf(mon, "OK bus %d, unit %d\n", |
91 | drives_table[drive_idx].bus, | |
92 | drives_table[drive_idx].unit); | |
6f338c34 AL |
93 | return; |
94 | } | |
95 | ||
1f5f6638 MA |
96 | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon, |
97 | const char *devaddr, | |
376253ec | 98 | const char *opts) |
6f338c34 | 99 | { |
1f5f6638 | 100 | PCIDevice *dev; |
6f338c34 AL |
101 | int type = -1, drive_idx = -1; |
102 | char buf[128]; | |
103 | ||
104 | if (get_param_value(buf, sizeof(buf), "if", opts)) { | |
105 | if (!strcmp(buf, "scsi")) | |
106 | type = IF_SCSI; | |
107 | else if (!strcmp(buf, "virtio")) { | |
108 | type = IF_VIRTIO; | |
8707ecca AL |
109 | } else { |
110 | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf); | |
1f5f6638 | 111 | return NULL; |
6f338c34 AL |
112 | } |
113 | } else { | |
376253ec | 114 | monitor_printf(mon, "no if= specified\n"); |
1f5f6638 | 115 | return NULL; |
6f338c34 AL |
116 | } |
117 | ||
118 | if (get_param_value(buf, sizeof(buf), "file", opts)) { | |
119 | drive_idx = add_init_drive(opts); | |
120 | if (drive_idx < 0) | |
1f5f6638 | 121 | return NULL; |
c2cc47a4 MA |
122 | if (drives_table[drive_idx].devaddr) { |
123 | monitor_printf(mon, "Parameter addr not supported\n"); | |
124 | return NULL; | |
125 | } | |
6f338c34 | 126 | } else if (type == IF_VIRTIO) { |
376253ec | 127 | monitor_printf(mon, "virtio requires a backing file/device.\n"); |
1f5f6638 | 128 | return NULL; |
6f338c34 AL |
129 | } |
130 | ||
131 | switch (type) { | |
132 | case IF_SCSI: | |
1f5f6638 | 133 | dev = pci_create("lsi53c895a", devaddr); |
6f338c34 AL |
134 | break; |
135 | case IF_VIRTIO: | |
1f5f6638 | 136 | dev = pci_create("virtio-blk-pci", devaddr); |
6f338c34 | 137 | break; |
1f5f6638 MA |
138 | default: |
139 | dev = NULL; | |
6f338c34 | 140 | } |
1f5f6638 MA |
141 | if (dev) |
142 | qdev_init(&dev->qdev); | |
143 | return dev; | |
6f338c34 AL |
144 | } |
145 | ||
376253ec AL |
146 | void pci_device_hot_add(Monitor *mon, const char *pci_addr, const char *type, |
147 | const char *opts) | |
6f338c34 AL |
148 | { |
149 | PCIDevice *dev = NULL; | |
6f338c34 | 150 | |
e9283f8b JK |
151 | /* strip legacy tag */ |
152 | if (!strncmp(pci_addr, "pci_addr=", 9)) { | |
153 | pci_addr += 9; | |
6f338c34 AL |
154 | } |
155 | ||
e9283f8b JK |
156 | if (!strcmp(pci_addr, "auto")) |
157 | pci_addr = NULL; | |
6f338c34 AL |
158 | |
159 | if (strcmp(type, "nic") == 0) | |
e9283f8b | 160 | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
6f338c34 | 161 | else if (strcmp(type, "storage") == 0) |
e9283f8b | 162 | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
6f338c34 | 163 | else |
376253ec | 164 | monitor_printf(mon, "invalid type: %s\n", type); |
6f338c34 AL |
165 | |
166 | if (dev) { | |
1f5f6638 MA |
167 | qemu_system_device_hot_add(pci_bus_num(dev->bus), |
168 | PCI_SLOT(dev->devfn), 1); | |
376253ec AL |
169 | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n", |
170 | 0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), | |
171 | PCI_FUNC(dev->devfn)); | |
6f338c34 | 172 | } else |
376253ec | 173 | monitor_printf(mon, "failed to add %s\n", opts); |
6f338c34 AL |
174 | } |
175 | #endif | |
176 | ||
376253ec | 177 | void pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
6f338c34 AL |
178 | { |
179 | PCIDevice *d; | |
180 | int dom, bus; | |
181 | unsigned slot; | |
182 | ||
e9283f8b | 183 | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) { |
6f338c34 AL |
184 | return; |
185 | } | |
186 | ||
187 | d = pci_find_device(bus, slot, 0); | |
188 | if (!d) { | |
376253ec | 189 | monitor_printf(mon, "slot %d empty\n", slot); |
6f338c34 AL |
190 | return; |
191 | } | |
192 | ||
193 | qemu_system_device_hot_add(bus, slot, 0); | |
194 | } | |
195 | ||
196 | static int pci_match_fn(void *dev_private, void *arg) | |
197 | { | |
198 | PCIDevice *dev = dev_private; | |
199 | PCIDevice *match = arg; | |
200 | ||
201 | return (dev == match); | |
202 | } | |
203 | ||
204 | /* | |
205 | * OS has executed _EJ0 method, we now can remove the device | |
206 | */ | |
207 | void pci_device_hot_remove_success(int pcibus, int slot) | |
208 | { | |
209 | PCIDevice *d = pci_find_device(pcibus, slot, 0); | |
210 | int class_code; | |
211 | ||
212 | if (!d) { | |
376253ec | 213 | monitor_printf(cur_mon, "invalid slot %d\n", slot); |
6f338c34 AL |
214 | return; |
215 | } | |
216 | ||
217 | class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1); | |
218 | ||
219 | switch(class_code) { | |
220 | case PCI_BASE_CLASS_STORAGE: | |
221 | destroy_bdrvs(pci_match_fn, d); | |
222 | break; | |
223 | case PCI_BASE_CLASS_NETWORK: | |
224 | destroy_nic(pci_match_fn, d); | |
225 | break; | |
226 | } | |
227 | ||
228 | pci_unregister_device(d); | |
229 | } | |
230 |