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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) | |
5607c388 | 36 | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon, const char *opts) |
6f338c34 AL |
37 | { |
38 | int ret; | |
39 | ||
10ae5a7a | 40 | ret = net_client_init(mon, "nic", opts); |
eefb4091 | 41 | if (ret < 0) |
6f338c34 | 42 | return NULL; |
5607c388 MA |
43 | if (nd_table[ret].devaddr) { |
44 | monitor_printf(mon, "Parameter addr not supported\n"); | |
45 | return NULL; | |
46 | } | |
47 | return pci_nic_init(&nd_table[ret], "rtl8139", NULL); | |
6f338c34 AL |
48 | } |
49 | ||
376253ec | 50 | void drive_hot_add(Monitor *mon, const char *pci_addr, const char *opts) |
6f338c34 AL |
51 | { |
52 | int dom, pci_bus; | |
53 | unsigned slot; | |
54 | int drive_idx, type, bus; | |
55 | int success = 0; | |
56 | PCIDevice *dev; | |
57 | ||
58 | if (pci_read_devaddr(pci_addr, &dom, &pci_bus, &slot)) { | |
376253ec | 59 | monitor_printf(mon, "Invalid pci address\n"); |
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; | |
72 | type = drives_table[drive_idx].type; | |
73 | bus = drive_get_max_bus (type); | |
74 | ||
75 | switch (type) { | |
76 | case IF_SCSI: | |
77 | success = 1; | |
9be5dafe PB |
78 | lsi_scsi_attach(&dev->qdev, drives_table[drive_idx].bdrv, |
79 | drives_table[drive_idx].unit); | |
6f338c34 AL |
80 | break; |
81 | default: | |
376253ec | 82 | monitor_printf(mon, "Can't hot-add drive to type %d\n", type); |
6f338c34 AL |
83 | } |
84 | ||
85 | if (success) | |
376253ec AL |
86 | monitor_printf(mon, "OK bus %d, unit %d\n", |
87 | drives_table[drive_idx].bus, | |
88 | drives_table[drive_idx].unit); | |
6f338c34 AL |
89 | return; |
90 | } | |
91 | ||
376253ec AL |
92 | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon, PCIBus *pci_bus, |
93 | const char *opts) | |
6f338c34 AL |
94 | { |
95 | void *opaque = NULL; | |
96 | int type = -1, drive_idx = -1; | |
97 | char buf[128]; | |
98 | ||
99 | if (get_param_value(buf, sizeof(buf), "if", opts)) { | |
100 | if (!strcmp(buf, "scsi")) | |
101 | type = IF_SCSI; | |
102 | else if (!strcmp(buf, "virtio")) { | |
103 | type = IF_VIRTIO; | |
8707ecca AL |
104 | } else { |
105 | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf); | |
106 | goto out; | |
6f338c34 AL |
107 | } |
108 | } else { | |
376253ec | 109 | monitor_printf(mon, "no if= specified\n"); |
8707ecca | 110 | goto out; |
6f338c34 AL |
111 | } |
112 | ||
113 | if (get_param_value(buf, sizeof(buf), "file", opts)) { | |
114 | drive_idx = add_init_drive(opts); | |
115 | if (drive_idx < 0) | |
8707ecca | 116 | goto out; |
6f338c34 | 117 | } else if (type == IF_VIRTIO) { |
376253ec | 118 | monitor_printf(mon, "virtio requires a backing file/device.\n"); |
8707ecca | 119 | goto out; |
6f338c34 AL |
120 | } |
121 | ||
122 | switch (type) { | |
123 | case IF_SCSI: | |
9be5dafe | 124 | opaque = pci_create_simple(pci_bus, -1, "lsi53c895a"); |
6f338c34 AL |
125 | break; |
126 | case IF_VIRTIO: | |
53c25cea | 127 | opaque = pci_create_simple(pci_bus, -1, "virtio-blk-pci"); |
6f338c34 | 128 | break; |
6f338c34 AL |
129 | } |
130 | ||
8707ecca | 131 | out: |
6f338c34 AL |
132 | return opaque; |
133 | } | |
134 | ||
376253ec AL |
135 | void pci_device_hot_add(Monitor *mon, const char *pci_addr, const char *type, |
136 | const char *opts) | |
6f338c34 AL |
137 | { |
138 | PCIDevice *dev = NULL; | |
139 | PCIBus *pci_bus; | |
140 | int dom, bus; | |
141 | unsigned slot; | |
142 | ||
143 | if (pci_assign_devaddr(pci_addr, &dom, &bus, &slot)) { | |
376253ec | 144 | monitor_printf(mon, "Invalid pci address\n"); |
6f338c34 AL |
145 | return; |
146 | } | |
147 | ||
148 | pci_bus = pci_find_bus(bus); | |
149 | if (!pci_bus) { | |
376253ec | 150 | monitor_printf(mon, "Can't find pci_bus %d\n", bus); |
6f338c34 AL |
151 | return; |
152 | } | |
153 | ||
154 | if (strcmp(type, "nic") == 0) | |
5607c388 | 155 | dev = qemu_pci_hot_add_nic(mon, opts); |
6f338c34 | 156 | else if (strcmp(type, "storage") == 0) |
376253ec | 157 | dev = qemu_pci_hot_add_storage(mon, pci_bus, opts); |
6f338c34 | 158 | else |
376253ec | 159 | monitor_printf(mon, "invalid type: %s\n", type); |
6f338c34 AL |
160 | |
161 | if (dev) { | |
162 | qemu_system_device_hot_add(bus, PCI_SLOT(dev->devfn), 1); | |
376253ec AL |
163 | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n", |
164 | 0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), | |
165 | PCI_FUNC(dev->devfn)); | |
6f338c34 | 166 | } else |
376253ec | 167 | monitor_printf(mon, "failed to add %s\n", opts); |
6f338c34 AL |
168 | } |
169 | #endif | |
170 | ||
376253ec | 171 | void pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
6f338c34 AL |
172 | { |
173 | PCIDevice *d; | |
174 | int dom, bus; | |
175 | unsigned slot; | |
176 | ||
177 | if (pci_read_devaddr(pci_addr, &dom, &bus, &slot)) { | |
376253ec | 178 | monitor_printf(mon, "Invalid pci address\n"); |
6f338c34 AL |
179 | return; |
180 | } | |
181 | ||
182 | d = pci_find_device(bus, slot, 0); | |
183 | if (!d) { | |
376253ec | 184 | monitor_printf(mon, "slot %d empty\n", slot); |
6f338c34 AL |
185 | return; |
186 | } | |
187 | ||
188 | qemu_system_device_hot_add(bus, slot, 0); | |
189 | } | |
190 | ||
191 | static int pci_match_fn(void *dev_private, void *arg) | |
192 | { | |
193 | PCIDevice *dev = dev_private; | |
194 | PCIDevice *match = arg; | |
195 | ||
196 | return (dev == match); | |
197 | } | |
198 | ||
199 | /* | |
200 | * OS has executed _EJ0 method, we now can remove the device | |
201 | */ | |
202 | void pci_device_hot_remove_success(int pcibus, int slot) | |
203 | { | |
204 | PCIDevice *d = pci_find_device(pcibus, slot, 0); | |
205 | int class_code; | |
206 | ||
207 | if (!d) { | |
376253ec | 208 | monitor_printf(cur_mon, "invalid slot %d\n", slot); |
6f338c34 AL |
209 | return; |
210 | } | |
211 | ||
212 | class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1); | |
213 | ||
214 | switch(class_code) { | |
215 | case PCI_BASE_CLASS_STORAGE: | |
216 | destroy_bdrvs(pci_match_fn, d); | |
217 | break; | |
218 | case PCI_BASE_CLASS_NETWORK: | |
219 | destroy_nic(pci_match_fn, d); | |
220 | break; | |
221 | } | |
222 | ||
223 | pci_unregister_device(d); | |
224 | } | |
225 |