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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" | |
31 | #include "console.h" | |
32 | #include "block_int.h" | |
33 | #include "virtio-blk.h" | |
34 | ||
35 | #if defined(TARGET_I386) || defined(TARGET_X86_64) | |
36 | static PCIDevice *qemu_pci_hot_add_nic(PCIBus *pci_bus, const char *opts) | |
37 | { | |
38 | int ret; | |
39 | ||
40 | ret = net_client_init ("nic", opts); | |
41 | if (ret < 0 || !nd_table[ret].model) | |
42 | return NULL; | |
43 | return pci_nic_init (pci_bus, &nd_table[ret], -1, "rtl8139"); | |
44 | } | |
45 | ||
46 | void drive_hot_add(const char *pci_addr, const char *opts) | |
47 | { | |
48 | int dom, pci_bus; | |
49 | unsigned slot; | |
50 | int drive_idx, type, bus; | |
51 | int success = 0; | |
52 | PCIDevice *dev; | |
53 | ||
54 | if (pci_read_devaddr(pci_addr, &dom, &pci_bus, &slot)) { | |
55 | term_printf("Invalid pci address\n"); | |
56 | return; | |
57 | } | |
58 | ||
59 | dev = pci_find_device(pci_bus, slot, 0); | |
60 | if (!dev) { | |
61 | term_printf("no pci device with address %s\n", pci_addr); | |
62 | return; | |
63 | } | |
64 | ||
65 | drive_idx = add_init_drive(opts); | |
66 | if (drive_idx < 0) | |
67 | return; | |
68 | type = drives_table[drive_idx].type; | |
69 | bus = drive_get_max_bus (type); | |
70 | ||
71 | switch (type) { | |
72 | case IF_SCSI: | |
73 | success = 1; | |
74 | lsi_scsi_attach (dev, drives_table[drive_idx].bdrv, | |
75 | drives_table[drive_idx].unit); | |
76 | break; | |
77 | default: | |
78 | term_printf("Can't hot-add drive to type %d\n", type); | |
79 | } | |
80 | ||
81 | if (success) | |
82 | term_printf("OK bus %d, unit %d\n", drives_table[drive_idx].bus, | |
83 | drives_table[drive_idx].unit); | |
84 | return; | |
85 | } | |
86 | ||
87 | static PCIDevice *qemu_pci_hot_add_storage(PCIBus *pci_bus, const char *opts) | |
88 | { | |
89 | void *opaque = NULL; | |
90 | int type = -1, drive_idx = -1; | |
91 | char buf[128]; | |
92 | ||
93 | if (get_param_value(buf, sizeof(buf), "if", opts)) { | |
94 | if (!strcmp(buf, "scsi")) | |
95 | type = IF_SCSI; | |
96 | else if (!strcmp(buf, "virtio")) { | |
97 | type = IF_VIRTIO; | |
98 | } | |
99 | } else { | |
100 | term_printf("no if= specified\n"); | |
101 | return NULL; | |
102 | } | |
103 | ||
104 | if (get_param_value(buf, sizeof(buf), "file", opts)) { | |
105 | drive_idx = add_init_drive(opts); | |
106 | if (drive_idx < 0) | |
107 | return NULL; | |
108 | } else if (type == IF_VIRTIO) { | |
109 | term_printf("virtio requires a backing file/device.\n"); | |
110 | return NULL; | |
111 | } | |
112 | ||
113 | switch (type) { | |
114 | case IF_SCSI: | |
115 | opaque = lsi_scsi_init (pci_bus, -1); | |
116 | if (opaque && drive_idx >= 0) | |
117 | lsi_scsi_attach (opaque, drives_table[drive_idx].bdrv, | |
118 | drives_table[drive_idx].unit); | |
119 | break; | |
120 | case IF_VIRTIO: | |
121 | opaque = virtio_blk_init (pci_bus, drives_table[drive_idx].bdrv); | |
122 | break; | |
123 | default: | |
124 | term_printf ("type %s not a hotpluggable PCI device.\n", buf); | |
125 | } | |
126 | ||
127 | return opaque; | |
128 | } | |
129 | ||
130 | void pci_device_hot_add(const char *pci_addr, const char *type, const char *opts) | |
131 | { | |
132 | PCIDevice *dev = NULL; | |
133 | PCIBus *pci_bus; | |
134 | int dom, bus; | |
135 | unsigned slot; | |
136 | ||
137 | if (pci_assign_devaddr(pci_addr, &dom, &bus, &slot)) { | |
138 | term_printf("Invalid pci address\n"); | |
139 | return; | |
140 | } | |
141 | ||
142 | pci_bus = pci_find_bus(bus); | |
143 | if (!pci_bus) { | |
144 | term_printf("Can't find pci_bus %d\n", bus); | |
145 | return; | |
146 | } | |
147 | ||
148 | if (strcmp(type, "nic") == 0) | |
149 | dev = qemu_pci_hot_add_nic(pci_bus, opts); | |
150 | else if (strcmp(type, "storage") == 0) | |
151 | dev = qemu_pci_hot_add_storage(pci_bus, opts); | |
152 | else | |
153 | term_printf("invalid type: %s\n", type); | |
154 | ||
155 | if (dev) { | |
156 | qemu_system_device_hot_add(bus, PCI_SLOT(dev->devfn), 1); | |
157 | term_printf("OK domain %d, bus %d, slot %d, function %d\n", | |
158 | 0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), | |
159 | PCI_FUNC(dev->devfn)); | |
160 | } else | |
161 | term_printf("failed to add %s\n", opts); | |
162 | } | |
163 | #endif | |
164 | ||
165 | void pci_device_hot_remove(const char *pci_addr) | |
166 | { | |
167 | PCIDevice *d; | |
168 | int dom, bus; | |
169 | unsigned slot; | |
170 | ||
171 | if (pci_read_devaddr(pci_addr, &dom, &bus, &slot)) { | |
172 | term_printf("Invalid pci address\n"); | |
173 | return; | |
174 | } | |
175 | ||
176 | d = pci_find_device(bus, slot, 0); | |
177 | if (!d) { | |
178 | term_printf("slot %d empty\n", slot); | |
179 | return; | |
180 | } | |
181 | ||
182 | qemu_system_device_hot_add(bus, slot, 0); | |
183 | } | |
184 | ||
185 | static int pci_match_fn(void *dev_private, void *arg) | |
186 | { | |
187 | PCIDevice *dev = dev_private; | |
188 | PCIDevice *match = arg; | |
189 | ||
190 | return (dev == match); | |
191 | } | |
192 | ||
193 | /* | |
194 | * OS has executed _EJ0 method, we now can remove the device | |
195 | */ | |
196 | void pci_device_hot_remove_success(int pcibus, int slot) | |
197 | { | |
198 | PCIDevice *d = pci_find_device(pcibus, slot, 0); | |
199 | int class_code; | |
200 | ||
201 | if (!d) { | |
202 | term_printf("invalid slot %d\n", slot); | |
203 | return; | |
204 | } | |
205 | ||
206 | class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1); | |
207 | ||
208 | switch(class_code) { | |
209 | case PCI_BASE_CLASS_STORAGE: | |
210 | destroy_bdrvs(pci_match_fn, d); | |
211 | break; | |
212 | case PCI_BASE_CLASS_NETWORK: | |
213 | destroy_nic(pci_match_fn, d); | |
214 | break; | |
215 | } | |
216 | ||
217 | pci_unregister_device(d); | |
218 | } | |
219 |