1 |
dpavlin |
1 |
/* |
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dpavlin |
7 |
* Cisco router simulation platform. |
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dpavlin |
1 |
* Copyright (c) 2005,2006 Christophe Fillot (cf@utc.fr) |
4 |
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* |
5 |
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* Virtual machine abstraction. |
6 |
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*/ |
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#include <stdio.h> |
9 |
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#include <stdlib.h> |
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#include <string.h> |
11 |
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#include <unistd.h> |
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dpavlin |
4 |
#include <errno.h> |
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dpavlin |
1 |
#include <fcntl.h> |
14 |
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#include <sys/types.h> |
15 |
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#include <assert.h> |
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17 |
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#include "registry.h" |
18 |
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#include "device.h" |
19 |
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#include "pci_dev.h" |
20 |
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#include "pci_io.h" |
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dpavlin |
7 |
#include "cpu.h" |
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#include "mips64_jit.h" |
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dpavlin |
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#include "vm.h" |
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#include "dev_vtty.h" |
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dpavlin |
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#include MIPS64_ARCH_INC_FILE |
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dpavlin |
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|
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#define DEBUG_VM 1 |
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dpavlin |
7 |
#define VM_GLOCK() pthread_mutex_lock(&vm_global_lock) |
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#define VM_GUNLOCK() pthread_mutex_unlock(&vm_global_lock) |
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33 |
dpavlin |
1 |
/* Type of VM file naming (0=use VM name, 1=use instance ID) */ |
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int vm_file_naming_type = 0; |
35 |
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dpavlin |
7 |
/* Pool of ghost images */ |
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static vm_ghost_image_t *vm_ghost_pool = NULL; |
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39 |
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/* Global lock for VM manipulation */ |
40 |
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static pthread_mutex_t vm_global_lock = PTHREAD_MUTEX_INITIALIZER; |
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42 |
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/* Free all chunks used by a VM */ |
43 |
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static void vm_chunk_free_all(vm_instance_t *vm); |
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dpavlin |
1 |
/* Initialize a VM object */ |
46 |
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void vm_object_init(vm_obj_t *obj) |
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{ |
48 |
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memset(obj,0,sizeof(*obj)); |
49 |
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} |
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51 |
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/* Add a VM object to an instance */ |
52 |
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void vm_object_add(vm_instance_t *vm,vm_obj_t *obj) |
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{ |
54 |
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obj->next = vm->vm_object_list; |
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obj->pprev = &vm->vm_object_list; |
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57 |
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if (vm->vm_object_list) |
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vm->vm_object_list->pprev = &obj->next; |
59 |
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60 |
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vm->vm_object_list = obj; |
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} |
62 |
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63 |
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/* Remove a VM object from an instance */ |
64 |
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void vm_object_remove(vm_instance_t *vm,vm_obj_t *obj) |
65 |
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{ |
66 |
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if (obj->next) |
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obj->next->pprev = obj->pprev; |
68 |
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*(obj->pprev) = obj->next; |
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dpavlin |
4 |
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70 |
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obj->shutdown(vm,obj->data); |
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dpavlin |
1 |
} |
72 |
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73 |
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/* Find an object given its name */ |
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vm_obj_t *vm_object_find(vm_instance_t *vm,char *name) |
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{ |
76 |
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vm_obj_t *obj; |
77 |
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78 |
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for(obj=vm->vm_object_list;obj;obj=obj->next) |
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if (!strcmp(obj->name,name)) |
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return obj; |
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82 |
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return NULL; |
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} |
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85 |
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/* Check that a mandatory object is present */ |
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int vm_object_check(vm_instance_t *vm,char *name) |
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{ |
88 |
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return(vm_object_find(vm,name) ? 0 : -1); |
89 |
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} |
90 |
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91 |
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/* Shut down all objects of an instance */ |
92 |
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void vm_object_free_list(vm_instance_t *vm) |
93 |
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{ |
94 |
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vm_obj_t *obj,*next; |
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96 |
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for(obj=vm->vm_object_list;obj;obj=next) { |
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next = obj->next; |
98 |
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99 |
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if (obj->shutdown != NULL) { |
100 |
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#if DEBUG_VM |
101 |
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vm_log(vm,"VM_OBJECT","Shutdown of object \"%s\"\n",obj->name); |
102 |
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#endif |
103 |
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obj->shutdown(vm,obj->data); |
104 |
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} |
105 |
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} |
106 |
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107 |
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vm->vm_object_list = NULL; |
108 |
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} |
109 |
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110 |
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/* Dump the object list of an instance */ |
111 |
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void vm_object_dump(vm_instance_t *vm) |
112 |
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{ |
113 |
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vm_obj_t *obj; |
114 |
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115 |
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printf("VM \"%s\" (%u) object list:\n",vm->name,vm->instance_id); |
116 |
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for(obj=vm->vm_object_list;obj;obj=obj->next) { |
118 |
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printf(" - %-15s [data=%p]\n",obj->name,obj->data); |
119 |
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} |
120 |
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121 |
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printf("\n"); |
122 |
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} |
123 |
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124 |
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/* Get VM type */ |
125 |
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char *vm_get_type(vm_instance_t *vm) |
126 |
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{ |
127 |
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char *machine; |
128 |
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129 |
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switch(vm->type) { |
130 |
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case VM_TYPE_C3600: |
131 |
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machine = "c3600"; |
132 |
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break; |
133 |
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case VM_TYPE_C7200: |
134 |
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machine = "c7200"; |
135 |
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break; |
136 |
dpavlin |
4 |
case VM_TYPE_C2691: |
137 |
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machine = "c2691"; |
138 |
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break; |
139 |
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case VM_TYPE_C3725: |
140 |
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machine = "c3725"; |
141 |
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break; |
142 |
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case VM_TYPE_C3745: |
143 |
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machine = "c3745"; |
144 |
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break; |
145 |
dpavlin |
7 |
case VM_TYPE_C2600: |
146 |
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machine = "c2600"; |
147 |
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break; |
148 |
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case VM_TYPE_PPC32_TEST: |
149 |
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machine = "ppc32_test"; |
150 |
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break; |
151 |
dpavlin |
1 |
default: |
152 |
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machine = "unknown"; |
153 |
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break; |
154 |
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} |
155 |
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156 |
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return machine; |
157 |
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} |
158 |
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159 |
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/* Get platform type */ |
160 |
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char *vm_get_platform_type(vm_instance_t *vm) |
161 |
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{ |
162 |
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char *machine; |
163 |
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164 |
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switch(vm->type) { |
165 |
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case VM_TYPE_C3600: |
166 |
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machine = "C3600"; |
167 |
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break; |
168 |
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case VM_TYPE_C7200: |
169 |
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machine = "C7200"; |
170 |
dpavlin |
4 |
break; |
171 |
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case VM_TYPE_C2691: |
172 |
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machine = "C2691"; |
173 |
dpavlin |
1 |
break; |
174 |
dpavlin |
4 |
case VM_TYPE_C3725: |
175 |
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machine = "C3725"; |
176 |
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break; |
177 |
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case VM_TYPE_C3745: |
178 |
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machine = "C3745"; |
179 |
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break; |
180 |
dpavlin |
7 |
case VM_TYPE_C2600: |
181 |
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machine = "C2600"; |
182 |
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break; |
183 |
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case VM_TYPE_PPC32_TEST: |
184 |
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machine = "PPC32_TEST"; |
185 |
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break; |
186 |
dpavlin |
1 |
default: |
187 |
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machine = "VM"; |
188 |
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break; |
189 |
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} |
190 |
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191 |
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return machine; |
192 |
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} |
193 |
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194 |
dpavlin |
4 |
/* Get MAC address MSB */ |
195 |
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u_int vm_get_mac_addr_msb(vm_instance_t *vm) |
196 |
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{ |
197 |
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switch(vm->type) { |
198 |
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case VM_TYPE_C3600: |
199 |
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return(0xCC); |
200 |
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201 |
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case VM_TYPE_C7200: |
202 |
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return(0xCA); |
203 |
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204 |
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case VM_TYPE_C2691: |
205 |
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return(0xC0); |
206 |
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207 |
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case VM_TYPE_C3725: |
208 |
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return(0xC2); |
209 |
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210 |
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case VM_TYPE_C3745: |
211 |
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return(0xC4); |
212 |
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213 |
dpavlin |
7 |
case VM_TYPE_C2600: |
214 |
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return(0xC8); |
215 |
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216 |
dpavlin |
4 |
default: |
217 |
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return(0xC6); |
218 |
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} |
219 |
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} |
220 |
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|
221 |
dpavlin |
1 |
/* Generate a filename for use by the instance */ |
222 |
|
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char *vm_build_filename(vm_instance_t *vm,char *name) |
223 |
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{ |
224 |
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char *filename,*machine; |
225 |
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226 |
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machine = vm_get_type(vm); |
227 |
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228 |
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switch(vm_file_naming_type) { |
229 |
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case 1: |
230 |
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filename = dyn_sprintf("%s_i%u_%s",machine,vm->instance_id,name); |
231 |
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break; |
232 |
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case 0: |
233 |
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default: |
234 |
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filename = dyn_sprintf("%s_%s_%s",machine,vm->name,name); |
235 |
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break; |
236 |
|
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} |
237 |
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|
238 |
|
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assert(filename != NULL); |
239 |
|
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return filename; |
240 |
|
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} |
241 |
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|
242 |
|
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/* Erase lock file */ |
243 |
|
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void vm_release_lock(vm_instance_t *vm,int erase) |
244 |
|
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{ |
245 |
|
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if (vm->lock_fd != NULL) { |
246 |
|
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fclose(vm->lock_fd); |
247 |
|
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vm->lock_fd = NULL; |
248 |
|
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} |
249 |
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|
250 |
|
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if (vm->lock_file != NULL) { |
251 |
|
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if (erase) |
252 |
|
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unlink(vm->lock_file); |
253 |
|
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free(vm->lock_file); |
254 |
|
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vm->lock_file = NULL; |
255 |
|
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} |
256 |
|
|
} |
257 |
|
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|
258 |
|
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/* Check that an instance lock file doesn't already exist */ |
259 |
|
|
int vm_get_lock(vm_instance_t *vm) |
260 |
|
|
{ |
261 |
|
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char pid_str[32]; |
262 |
|
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struct flock lock; |
263 |
|
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|
264 |
|
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vm->lock_file = vm_build_filename(vm,"lock"); |
265 |
|
|
|
266 |
|
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if (!(vm->lock_fd = fopen(vm->lock_file,"w"))) { |
267 |
|
|
fprintf(stderr,"Unable to create lock file \"%s\".\n",vm->lock_file); |
268 |
|
|
return(-1); |
269 |
|
|
} |
270 |
|
|
|
271 |
|
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memset(&lock,0,sizeof(lock)); |
272 |
|
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lock.l_type = F_WRLCK; |
273 |
|
|
lock.l_whence = SEEK_SET; |
274 |
|
|
lock.l_start = 0; |
275 |
|
|
lock.l_len = 0; |
276 |
|
|
|
277 |
|
|
if (fcntl(fileno(vm->lock_fd),F_SETLK,&lock) == -1) { |
278 |
|
|
if (fcntl(fileno(vm->lock_fd),F_GETLK,&lock) == 0) { |
279 |
|
|
snprintf(pid_str,sizeof(pid_str),"%ld",(long)lock.l_pid); |
280 |
|
|
} else { |
281 |
|
|
strcpy(pid_str,"unknown"); |
282 |
|
|
} |
283 |
|
|
|
284 |
|
|
fprintf(stderr, |
285 |
|
|
"\nAn emulator instance (PID %s) is already running with " |
286 |
|
|
"identifier %u.\n" |
287 |
|
|
"If this is not the case, please erase file \"%s\".\n\n", |
288 |
|
|
pid_str,vm->instance_id,vm->lock_file); |
289 |
|
|
vm_release_lock(vm,FALSE); |
290 |
|
|
return(-1); |
291 |
|
|
} |
292 |
|
|
|
293 |
|
|
/* write the emulator PID */ |
294 |
|
|
fprintf(vm->lock_fd,"%ld\n",(u_long)getpid()); |
295 |
|
|
return(0); |
296 |
|
|
} |
297 |
|
|
|
298 |
|
|
/* Log a message */ |
299 |
|
|
void vm_flog(vm_instance_t *vm,char *module,char *format,va_list ap) |
300 |
|
|
{ |
301 |
|
|
if (vm->log_fd) |
302 |
|
|
m_flog(vm->log_fd,module,format,ap); |
303 |
|
|
} |
304 |
|
|
|
305 |
|
|
/* Log a message */ |
306 |
|
|
void vm_log(vm_instance_t *vm,char *module,char *format,...) |
307 |
|
|
{ |
308 |
|
|
va_list ap; |
309 |
|
|
|
310 |
dpavlin |
7 |
if (vm->log_fd) { |
311 |
|
|
va_start(ap,format); |
312 |
|
|
vm_flog(vm,module,format,ap); |
313 |
|
|
va_end(ap); |
314 |
|
|
} |
315 |
dpavlin |
1 |
} |
316 |
|
|
|
317 |
|
|
/* Close the log file */ |
318 |
|
|
int vm_close_log(vm_instance_t *vm) |
319 |
|
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{ |
320 |
|
|
if (vm->log_fd) |
321 |
|
|
fclose(vm->log_fd); |
322 |
|
|
|
323 |
|
|
free(vm->log_file); |
324 |
|
|
|
325 |
|
|
vm->log_file = NULL; |
326 |
|
|
vm->log_fd = NULL; |
327 |
|
|
return(0); |
328 |
|
|
} |
329 |
|
|
|
330 |
|
|
/* Create the log file */ |
331 |
|
|
int vm_create_log(vm_instance_t *vm) |
332 |
|
|
{ |
333 |
dpavlin |
7 |
if (vm->log_file_enabled) { |
334 |
|
|
vm_close_log(vm); |
335 |
dpavlin |
1 |
|
336 |
dpavlin |
7 |
if (!(vm->log_file = vm_build_filename(vm,"log.txt"))) |
337 |
|
|
return(-1); |
338 |
dpavlin |
1 |
|
339 |
dpavlin |
7 |
if (!(vm->log_fd = fopen(vm->log_file,"w"))) { |
340 |
|
|
fprintf(stderr,"VM %s: unable to create log file '%s'\n", |
341 |
|
|
vm->name,vm->log_file); |
342 |
|
|
free(vm->log_file); |
343 |
|
|
vm->log_file = NULL; |
344 |
|
|
return(-1); |
345 |
|
|
} |
346 |
dpavlin |
1 |
} |
347 |
|
|
|
348 |
|
|
return(0); |
349 |
|
|
} |
350 |
|
|
|
351 |
|
|
/* Error message */ |
352 |
|
|
void vm_error(vm_instance_t *vm,char *format,...) |
353 |
|
|
{ |
354 |
|
|
char buffer[2048]; |
355 |
|
|
va_list ap; |
356 |
|
|
|
357 |
|
|
va_start(ap,format); |
358 |
|
|
vsnprintf(buffer,sizeof(buffer),format,ap); |
359 |
|
|
va_end(ap); |
360 |
|
|
|
361 |
|
|
fprintf(stderr,"%s '%s': %s",vm_get_platform_type(vm),vm->name,buffer); |
362 |
|
|
} |
363 |
|
|
|
364 |
|
|
/* Create a new VM instance */ |
365 |
|
|
vm_instance_t *vm_create(char *name,int instance_id,int machine_type) |
366 |
|
|
{ |
367 |
|
|
vm_instance_t *vm; |
368 |
|
|
|
369 |
|
|
if (!(vm = malloc(sizeof(*vm)))) { |
370 |
|
|
fprintf(stderr,"VM %s: unable to create new instance!\n",name); |
371 |
|
|
return NULL; |
372 |
|
|
} |
373 |
|
|
|
374 |
|
|
memset(vm,0,sizeof(*vm)); |
375 |
|
|
vm->instance_id = instance_id; |
376 |
|
|
vm->type = machine_type; |
377 |
|
|
vm->status = VM_STATUS_HALTED; |
378 |
|
|
vm->jit_use = JIT_SUPPORT; |
379 |
|
|
vm->vtty_con_type = VTTY_TYPE_TERM; |
380 |
|
|
vm->vtty_aux_type = VTTY_TYPE_NONE; |
381 |
|
|
vm->timer_irq_check_itv = VM_TIMER_IRQ_CHECK_ITV; |
382 |
dpavlin |
7 |
vm->log_file_enabled = TRUE; |
383 |
dpavlin |
1 |
|
384 |
|
|
if (!(vm->name = strdup(name))) { |
385 |
|
|
fprintf(stderr,"VM %s: unable to store instance name!\n",name); |
386 |
|
|
goto err_name; |
387 |
|
|
} |
388 |
|
|
|
389 |
|
|
/* create lock file */ |
390 |
|
|
if (vm_get_lock(vm) == -1) |
391 |
|
|
goto err_lock; |
392 |
|
|
|
393 |
|
|
/* create log file */ |
394 |
|
|
if (vm_create_log(vm) == -1) |
395 |
|
|
goto err_log; |
396 |
|
|
|
397 |
|
|
if (registry_add(vm->name,OBJ_TYPE_VM,vm) == -1) { |
398 |
|
|
fprintf(stderr,"VM: Unable to store instance '%s' in registry!\n", |
399 |
|
|
vm->name); |
400 |
|
|
goto err_reg_add; |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
return vm; |
404 |
|
|
|
405 |
|
|
err_reg_add: |
406 |
|
|
vm_close_log(vm); |
407 |
|
|
err_log: |
408 |
|
|
free(vm->lock_file); |
409 |
|
|
err_lock: |
410 |
|
|
free(vm->name); |
411 |
|
|
err_name: |
412 |
|
|
free(vm); |
413 |
|
|
return NULL; |
414 |
|
|
} |
415 |
|
|
|
416 |
|
|
/* |
417 |
|
|
* Shutdown hardware resources used by a VM. |
418 |
|
|
* The CPU must have been stopped. |
419 |
|
|
*/ |
420 |
|
|
int vm_hardware_shutdown(vm_instance_t *vm) |
421 |
|
|
{ |
422 |
|
|
int i; |
423 |
|
|
|
424 |
|
|
if ((vm->status == VM_STATUS_HALTED) || !vm->cpu_group) { |
425 |
|
|
vm_log(vm,"VM","trying to shutdown an inactive VM.\n"); |
426 |
|
|
return(-1); |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
vm_log(vm,"VM","shutdown procedure engaged.\n"); |
430 |
|
|
|
431 |
|
|
/* Mark the VM as halted */ |
432 |
|
|
vm->status = VM_STATUS_HALTED; |
433 |
|
|
|
434 |
|
|
/* Disable NVRAM operations */ |
435 |
|
|
vm->nvram_extract_config = NULL; |
436 |
|
|
vm->nvram_push_config = NULL; |
437 |
|
|
|
438 |
|
|
/* Free the object list */ |
439 |
|
|
vm_object_free_list(vm); |
440 |
|
|
|
441 |
|
|
/* Free resources used by PCI busses */ |
442 |
|
|
vm_log(vm,"VM","removing PCI busses.\n"); |
443 |
|
|
pci_io_data_remove(vm,vm->pci_io_space); |
444 |
|
|
pci_bus_remove(vm->pci_bus[0]); |
445 |
|
|
pci_bus_remove(vm->pci_bus[1]); |
446 |
|
|
vm->pci_bus[0] = vm->pci_bus[1] = NULL; |
447 |
|
|
|
448 |
|
|
/* Free the PCI bus pool */ |
449 |
|
|
for(i=0;i<VM_PCI_POOL_SIZE;i++) { |
450 |
|
|
if (vm->pci_bus_pool[i] != NULL) { |
451 |
|
|
pci_bus_remove(vm->pci_bus_pool[i]); |
452 |
|
|
vm->pci_bus_pool[i] = NULL; |
453 |
|
|
} |
454 |
|
|
} |
455 |
|
|
|
456 |
dpavlin |
7 |
/* Remove the IRQ routing vectors */ |
457 |
|
|
vm->set_irq = NULL; |
458 |
|
|
vm->clear_irq = NULL; |
459 |
|
|
|
460 |
dpavlin |
1 |
/* Delete the VTTY for Console and AUX ports */ |
461 |
|
|
vm_log(vm,"VM","deleting VTTY.\n"); |
462 |
|
|
vm_delete_vtty(vm); |
463 |
|
|
|
464 |
|
|
/* Delete system CPU group */ |
465 |
|
|
vm_log(vm,"VM","deleting system CPUs.\n"); |
466 |
|
|
cpu_group_delete(vm->cpu_group); |
467 |
|
|
vm->cpu_group = NULL; |
468 |
|
|
vm->boot_cpu = NULL; |
469 |
|
|
|
470 |
|
|
vm_log(vm,"VM","shutdown procedure completed.\n"); |
471 |
|
|
return(0); |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
/* Free resources used by a VM */ |
475 |
|
|
void vm_free(vm_instance_t *vm) |
476 |
|
|
{ |
477 |
|
|
if (vm != NULL) { |
478 |
|
|
/* Free hardware resources */ |
479 |
|
|
vm_hardware_shutdown(vm); |
480 |
|
|
|
481 |
|
|
/* Close log file */ |
482 |
|
|
vm_close_log(vm); |
483 |
|
|
|
484 |
|
|
/* Remove the lock file */ |
485 |
|
|
vm_release_lock(vm,TRUE); |
486 |
|
|
|
487 |
dpavlin |
7 |
/* Free all chunks */ |
488 |
|
|
vm_chunk_free_all(vm); |
489 |
|
|
|
490 |
dpavlin |
1 |
/* Free various elements */ |
491 |
dpavlin |
4 |
free(vm->ghost_ram_filename); |
492 |
dpavlin |
1 |
free(vm->sym_filename); |
493 |
|
|
free(vm->ios_image); |
494 |
|
|
free(vm->ios_config); |
495 |
|
|
free(vm->rom_filename); |
496 |
|
|
free(vm->name); |
497 |
|
|
free(vm); |
498 |
|
|
} |
499 |
|
|
} |
500 |
|
|
|
501 |
|
|
/* Get an instance given a name */ |
502 |
|
|
vm_instance_t *vm_acquire(char *name) |
503 |
|
|
{ |
504 |
|
|
return(registry_find(name,OBJ_TYPE_VM)); |
505 |
|
|
} |
506 |
|
|
|
507 |
|
|
/* Release a VM (decrement reference count) */ |
508 |
|
|
int vm_release(vm_instance_t *vm) |
509 |
|
|
{ |
510 |
|
|
return(registry_unref(vm->name,OBJ_TYPE_VM)); |
511 |
|
|
} |
512 |
|
|
|
513 |
dpavlin |
4 |
/* Initialize RAM */ |
514 |
|
|
int vm_ram_init(vm_instance_t *vm,m_uint64_t paddr) |
515 |
|
|
{ |
516 |
|
|
m_uint32_t len; |
517 |
|
|
|
518 |
|
|
len = vm->ram_size * 1048576; |
519 |
|
|
|
520 |
dpavlin |
7 |
if (vm->ghost_status == VM_GHOST_RAM_USE) { |
521 |
|
|
return(dev_ram_ghost_init(vm,"ram",vm->sparse_mem,vm->ghost_ram_filename, |
522 |
|
|
paddr,len)); |
523 |
|
|
} |
524 |
dpavlin |
4 |
|
525 |
|
|
return(dev_ram_init(vm,"ram",vm->ram_mmap, |
526 |
|
|
(vm->ghost_status != VM_GHOST_RAM_GENERATE), |
527 |
dpavlin |
7 |
vm->ghost_ram_filename,vm->sparse_mem,paddr,len)); |
528 |
dpavlin |
4 |
} |
529 |
|
|
|
530 |
dpavlin |
1 |
/* Initialize VTTY */ |
531 |
|
|
int vm_init_vtty(vm_instance_t *vm) |
532 |
|
|
{ |
533 |
|
|
/* Create Console and AUX ports */ |
534 |
|
|
vm->vtty_con = vtty_create(vm,"Console port", |
535 |
|
|
vm->vtty_con_type,vm->vtty_con_tcp_port, |
536 |
|
|
&vm->vtty_con_serial_option); |
537 |
|
|
|
538 |
|
|
vm->vtty_aux = vtty_create(vm,"AUX port", |
539 |
|
|
vm->vtty_aux_type,vm->vtty_aux_tcp_port, |
540 |
|
|
&vm->vtty_aux_serial_option); |
541 |
|
|
return(0); |
542 |
|
|
} |
543 |
|
|
|
544 |
|
|
/* Delete VTTY */ |
545 |
|
|
void vm_delete_vtty(vm_instance_t *vm) |
546 |
|
|
{ |
547 |
|
|
vtty_delete(vm->vtty_con); |
548 |
|
|
vtty_delete(vm->vtty_aux); |
549 |
|
|
vm->vtty_con = vm->vtty_aux = NULL; |
550 |
|
|
} |
551 |
|
|
|
552 |
|
|
/* Bind a device to a virtual machine */ |
553 |
|
|
int vm_bind_device(vm_instance_t *vm,struct vdevice *dev) |
554 |
|
|
{ |
555 |
|
|
struct vdevice **cur; |
556 |
|
|
u_int i; |
557 |
|
|
|
558 |
|
|
/* |
559 |
|
|
* Add this device to the device array. The index in the device array |
560 |
|
|
* is used by the MTS subsystem. |
561 |
|
|
*/ |
562 |
dpavlin |
7 |
for(i=0;i<VM_DEVICE_MAX;i++) |
563 |
dpavlin |
1 |
if (!vm->dev_array[i]) |
564 |
|
|
break; |
565 |
|
|
|
566 |
dpavlin |
7 |
if (i == VM_DEVICE_MAX) { |
567 |
dpavlin |
1 |
fprintf(stderr,"VM%u: vm_bind_device: device table full.\n", |
568 |
|
|
vm->instance_id); |
569 |
|
|
return(-1); |
570 |
|
|
} |
571 |
|
|
|
572 |
|
|
vm->dev_array[i] = dev; |
573 |
|
|
dev->id = i; |
574 |
|
|
|
575 |
|
|
/* |
576 |
|
|
* Add it to the linked-list (devices are ordered by physical addresses). |
577 |
|
|
*/ |
578 |
|
|
for(cur=&vm->dev_list;*cur;cur=&(*cur)->next) |
579 |
|
|
if ((*cur)->phys_addr > dev->phys_addr) |
580 |
|
|
break; |
581 |
|
|
|
582 |
|
|
dev->next = *cur; |
583 |
|
|
if (*cur) (*cur)->pprev = &dev->next; |
584 |
|
|
dev->pprev = cur; |
585 |
|
|
*cur = dev; |
586 |
|
|
return(0); |
587 |
|
|
} |
588 |
|
|
|
589 |
|
|
/* Unbind a device from a virtual machine */ |
590 |
|
|
int vm_unbind_device(vm_instance_t *vm,struct vdevice *dev) |
591 |
|
|
{ |
592 |
|
|
u_int i; |
593 |
|
|
|
594 |
|
|
if (!dev->pprev) |
595 |
|
|
return(-1); |
596 |
|
|
|
597 |
|
|
/* Remove the device from the linked list */ |
598 |
|
|
if (dev->next) |
599 |
|
|
dev->next->pprev = dev->pprev; |
600 |
|
|
|
601 |
|
|
*(dev->pprev) = dev->next; |
602 |
|
|
|
603 |
|
|
/* Remove the device from the device array */ |
604 |
dpavlin |
7 |
for(i=0;i<VM_DEVICE_MAX;i++) |
605 |
dpavlin |
1 |
if (vm->dev_array[i] == dev) { |
606 |
|
|
vm->dev_array[i] = NULL; |
607 |
|
|
break; |
608 |
|
|
} |
609 |
|
|
|
610 |
|
|
/* Clear device list info */ |
611 |
|
|
dev->next = NULL; |
612 |
|
|
dev->pprev = NULL; |
613 |
|
|
return(0); |
614 |
|
|
} |
615 |
|
|
|
616 |
|
|
/* Map a device at the specified physical address */ |
617 |
|
|
int vm_map_device(vm_instance_t *vm,struct vdevice *dev,m_uint64_t base_addr) |
618 |
|
|
{ |
619 |
|
|
#if 0 |
620 |
|
|
/* Suspend VM activity */ |
621 |
|
|
vm_suspend(vm); |
622 |
|
|
|
623 |
|
|
if (cpu_group_sync_state(vm->cpu_group) == -1) { |
624 |
|
|
fprintf(stderr,"VM%u: unable to sync with system CPUs.\n", |
625 |
|
|
vm->instance_id); |
626 |
|
|
return(-1); |
627 |
|
|
} |
628 |
|
|
#endif |
629 |
|
|
|
630 |
|
|
/* Unbind the device if it was already active */ |
631 |
|
|
vm_unbind_device(vm,dev); |
632 |
|
|
|
633 |
|
|
/* Map the device at the new base address and rebuild MTS */ |
634 |
|
|
dev->phys_addr = base_addr; |
635 |
|
|
vm_bind_device(vm,dev); |
636 |
|
|
cpu_group_rebuild_mts(vm->cpu_group); |
637 |
|
|
|
638 |
|
|
#if 0 |
639 |
|
|
vm_resume(vm); |
640 |
|
|
#endif |
641 |
|
|
return(0); |
642 |
|
|
} |
643 |
|
|
|
644 |
|
|
/* Suspend a VM instance */ |
645 |
|
|
int vm_suspend(vm_instance_t *vm) |
646 |
|
|
{ |
647 |
|
|
if (vm->status == VM_STATUS_RUNNING) { |
648 |
|
|
cpu_group_save_state(vm->cpu_group); |
649 |
dpavlin |
7 |
cpu_group_set_state(vm->cpu_group,CPU_STATE_SUSPENDED); |
650 |
dpavlin |
1 |
vm->status = VM_STATUS_SUSPENDED; |
651 |
|
|
} |
652 |
|
|
return(0); |
653 |
|
|
} |
654 |
|
|
|
655 |
|
|
/* Resume a VM instance */ |
656 |
|
|
int vm_resume(vm_instance_t *vm) |
657 |
|
|
{ |
658 |
|
|
if (vm->status == VM_STATUS_SUSPENDED) { |
659 |
|
|
cpu_group_restore_state(vm->cpu_group); |
660 |
|
|
vm->status = VM_STATUS_RUNNING; |
661 |
|
|
} |
662 |
|
|
return(0); |
663 |
|
|
} |
664 |
|
|
|
665 |
|
|
/* Stop an instance */ |
666 |
|
|
int vm_stop(vm_instance_t *vm) |
667 |
|
|
{ |
668 |
|
|
cpu_group_stop_all_cpu(vm->cpu_group); |
669 |
|
|
vm->status = VM_STATUS_SHUTDOWN; |
670 |
|
|
return(0); |
671 |
|
|
} |
672 |
|
|
|
673 |
|
|
/* Monitor an instance periodically */ |
674 |
|
|
void vm_monitor(vm_instance_t *vm) |
675 |
|
|
{ |
676 |
|
|
while(vm->status != VM_STATUS_SHUTDOWN) |
677 |
|
|
usleep(200000); |
678 |
|
|
} |
679 |
|
|
|
680 |
dpavlin |
7 |
/* Create a new chunk */ |
681 |
|
|
static vm_chunk_t *vm_chunk_create(vm_instance_t *vm) |
682 |
|
|
{ |
683 |
|
|
vm_chunk_t *chunk; |
684 |
|
|
size_t area_len; |
685 |
|
|
|
686 |
|
|
if (!(chunk = malloc(sizeof(*chunk)))) |
687 |
|
|
return NULL; |
688 |
|
|
|
689 |
|
|
area_len = VM_CHUNK_AREA_SIZE * VM_PAGE_SIZE; |
690 |
|
|
|
691 |
|
|
if (!(chunk->area = m_memalign(VM_PAGE_SIZE,area_len))) { |
692 |
|
|
free(chunk); |
693 |
|
|
return NULL; |
694 |
|
|
} |
695 |
|
|
|
696 |
|
|
chunk->page_alloc = 0; |
697 |
|
|
chunk->page_total = VM_CHUNK_AREA_SIZE; |
698 |
|
|
|
699 |
|
|
chunk->next = vm->chunks; |
700 |
|
|
vm->chunks = chunk; |
701 |
|
|
return chunk; |
702 |
|
|
} |
703 |
|
|
|
704 |
|
|
/* Free a chunk */ |
705 |
|
|
static void vm_chunk_free(vm_chunk_t *chunk) |
706 |
|
|
{ |
707 |
|
|
free(chunk->area); |
708 |
|
|
free(chunk); |
709 |
|
|
} |
710 |
|
|
|
711 |
|
|
/* Free all chunks used by a VM */ |
712 |
|
|
static void vm_chunk_free_all(vm_instance_t *vm) |
713 |
|
|
{ |
714 |
|
|
vm_chunk_t *chunk,*next; |
715 |
|
|
|
716 |
|
|
for(chunk=vm->chunks;chunk;chunk=next) { |
717 |
|
|
next = chunk->next; |
718 |
|
|
vm_chunk_free(chunk); |
719 |
|
|
} |
720 |
|
|
|
721 |
|
|
vm->chunks = NULL; |
722 |
|
|
} |
723 |
|
|
|
724 |
|
|
/* Allocate an host page */ |
725 |
|
|
void *vm_alloc_host_page(vm_instance_t *vm) |
726 |
|
|
{ |
727 |
|
|
vm_chunk_t *chunk = vm->chunks; |
728 |
|
|
void *ptr; |
729 |
|
|
|
730 |
|
|
if (!chunk || (chunk->page_alloc == chunk->page_total)) { |
731 |
|
|
chunk = vm_chunk_create(vm); |
732 |
|
|
if (!chunk) return NULL; |
733 |
|
|
} |
734 |
|
|
|
735 |
|
|
ptr = chunk->area + (chunk->page_alloc * VM_PAGE_SIZE); |
736 |
|
|
chunk->page_alloc++; |
737 |
|
|
return(ptr); |
738 |
|
|
} |
739 |
|
|
|
740 |
|
|
/* Free resources used by a ghost image */ |
741 |
|
|
static void vm_ghost_image_free(vm_ghost_image_t *img) |
742 |
|
|
{ |
743 |
|
|
if (img) { |
744 |
|
|
if (img->fd != -1) { |
745 |
|
|
close(img->fd); |
746 |
|
|
|
747 |
|
|
if (img->area_ptr != NULL) |
748 |
|
|
munmap(img->area_ptr,img->file_size); |
749 |
|
|
} |
750 |
|
|
|
751 |
|
|
free(img->filename); |
752 |
|
|
free(img); |
753 |
|
|
} |
754 |
|
|
} |
755 |
|
|
|
756 |
|
|
/* Find a specified ghost image in the pool */ |
757 |
|
|
static vm_ghost_image_t *vm_ghost_image_find(char *filename) |
758 |
|
|
{ |
759 |
|
|
vm_ghost_image_t *img; |
760 |
|
|
|
761 |
|
|
for(img=vm_ghost_pool;img;img=img->next) |
762 |
|
|
if (!strcmp(img->filename,filename)) |
763 |
|
|
return img; |
764 |
|
|
|
765 |
|
|
return NULL; |
766 |
|
|
} |
767 |
|
|
|
768 |
|
|
/* Load a new ghost image */ |
769 |
|
|
static vm_ghost_image_t *vm_ghost_image_load(char *filename) |
770 |
|
|
{ |
771 |
|
|
vm_ghost_image_t *img; |
772 |
|
|
|
773 |
|
|
if (!(img = calloc(1,sizeof(*img)))) |
774 |
|
|
return NULL; |
775 |
|
|
|
776 |
|
|
img->fd = -1; |
777 |
|
|
|
778 |
|
|
if (!(img->filename = strdup(filename))) { |
779 |
|
|
vm_ghost_image_free(img); |
780 |
|
|
return NULL; |
781 |
|
|
} |
782 |
|
|
|
783 |
|
|
img->fd = memzone_open_file(img->filename,&img->area_ptr,&img->file_size); |
784 |
|
|
|
785 |
|
|
if (img->fd == -1) { |
786 |
|
|
vm_ghost_image_free(img); |
787 |
|
|
return NULL; |
788 |
|
|
} |
789 |
|
|
|
790 |
|
|
m_log("GHOST","loaded ghost image %s (fd=%d) at addr=%p (size=0x%llx)\n", |
791 |
|
|
img->filename,img->fd,img->area_ptr,(long long)img->file_size); |
792 |
|
|
|
793 |
|
|
return img; |
794 |
|
|
} |
795 |
|
|
|
796 |
|
|
/* Get a ghost image */ |
797 |
|
|
int vm_ghost_image_get(char *filename,u_char **ptr,int *fd) |
798 |
|
|
{ |
799 |
|
|
vm_ghost_image_t *img; |
800 |
|
|
|
801 |
|
|
VM_GLOCK(); |
802 |
|
|
|
803 |
|
|
/* Do we already have this image in the pool ? */ |
804 |
|
|
if ((img = vm_ghost_image_find(filename)) != NULL) { |
805 |
|
|
img->ref_count++; |
806 |
|
|
*ptr = img->area_ptr; |
807 |
|
|
*fd = img->fd; |
808 |
|
|
VM_GUNLOCK(); |
809 |
|
|
return(0); |
810 |
|
|
} |
811 |
|
|
|
812 |
|
|
/* Load the ghost file and add it into the pool */ |
813 |
|
|
if (!(img = vm_ghost_image_load(filename))) { |
814 |
|
|
VM_GUNLOCK(); |
815 |
|
|
fprintf(stderr,"Unable to load ghost image %s\n",filename); |
816 |
|
|
return(-1); |
817 |
|
|
} |
818 |
|
|
|
819 |
|
|
img->ref_count = 1; |
820 |
|
|
*ptr = img->area_ptr; |
821 |
|
|
*fd = img->fd; |
822 |
|
|
|
823 |
|
|
img->next = vm_ghost_pool; |
824 |
|
|
vm_ghost_pool = img; |
825 |
|
|
VM_GUNLOCK(); |
826 |
|
|
return(0); |
827 |
|
|
} |
828 |
|
|
|
829 |
|
|
/* Release a ghost image */ |
830 |
|
|
int vm_ghost_image_release(int fd) |
831 |
|
|
{ |
832 |
|
|
vm_ghost_image_t **img,*next; |
833 |
|
|
|
834 |
|
|
VM_GLOCK(); |
835 |
|
|
|
836 |
|
|
for(img=&vm_ghost_pool;*img;img=&(*img)->next) { |
837 |
|
|
if ((*img)->fd == fd) { |
838 |
|
|
assert((*img)->ref_count > 0); |
839 |
|
|
|
840 |
|
|
(*img)->ref_count--; |
841 |
|
|
|
842 |
|
|
if ((*img)->ref_count == 0) { |
843 |
|
|
m_log("GHOST","unloaded ghost image %s (fd=%d) at " |
844 |
|
|
"addr=%p (size=0x%llx)\n", |
845 |
|
|
(*img)->filename,(*img)->fd,(*img)->area_ptr, |
846 |
|
|
(long long)(*img)->file_size); |
847 |
|
|
|
848 |
|
|
next = (*img)->next; |
849 |
|
|
vm_ghost_image_free(*img); |
850 |
|
|
*img = next; |
851 |
|
|
} |
852 |
|
|
|
853 |
|
|
VM_GUNLOCK(); |
854 |
|
|
return(0); |
855 |
|
|
} |
856 |
|
|
} |
857 |
|
|
|
858 |
|
|
VM_GUNLOCK(); |
859 |
|
|
return(-1); |
860 |
|
|
} |
861 |
|
|
|
862 |
dpavlin |
4 |
/* Open a VM file and map it in memory */ |
863 |
|
|
int vm_mmap_open_file(vm_instance_t *vm,char *name, |
864 |
|
|
u_char **ptr,off_t *fsize) |
865 |
|
|
{ |
866 |
|
|
char *filename; |
867 |
|
|
int fd; |
868 |
|
|
|
869 |
|
|
if (!(filename = vm_build_filename(vm,name))) { |
870 |
|
|
fprintf(stderr,"vm_mmap_open_file: unable to create filename (%s)\n", |
871 |
|
|
name); |
872 |
|
|
return(-1); |
873 |
|
|
} |
874 |
|
|
|
875 |
|
|
if ((fd = memzone_open_file(filename,ptr,fsize)) == -1) |
876 |
|
|
fprintf(stderr,"vm_mmap_open_file: unable to open file '%s' (%s)\n", |
877 |
|
|
filename,strerror(errno)); |
878 |
|
|
|
879 |
|
|
free(filename); |
880 |
|
|
return(fd); |
881 |
|
|
} |
882 |
|
|
|
883 |
|
|
/* Open/Create a VM file and map it in memory */ |
884 |
|
|
int vm_mmap_create_file(vm_instance_t *vm,char *name,size_t len,u_char **ptr) |
885 |
|
|
{ |
886 |
|
|
char *filename; |
887 |
|
|
int fd; |
888 |
|
|
|
889 |
|
|
if (!(filename = vm_build_filename(vm,name))) { |
890 |
|
|
fprintf(stderr,"vm_mmap_create_file: unable to create filename (%s)\n", |
891 |
|
|
name); |
892 |
|
|
return(-1); |
893 |
|
|
} |
894 |
|
|
|
895 |
|
|
if ((fd = memzone_create_file(filename,len,ptr)) == -1) |
896 |
|
|
fprintf(stderr,"vm_mmap_create_file: unable to open file '%s' (%s)\n", |
897 |
|
|
filename,strerror(errno)); |
898 |
|
|
|
899 |
|
|
free(filename); |
900 |
|
|
return(fd); |
901 |
|
|
} |
902 |
|
|
|
903 |
|
|
/* Close a memory mapped file */ |
904 |
|
|
int vm_mmap_close_file(int fd,u_char *ptr,size_t len) |
905 |
|
|
{ |
906 |
|
|
if (ptr != NULL) |
907 |
|
|
munmap(ptr,len); |
908 |
|
|
|
909 |
|
|
if (fd != -1) |
910 |
|
|
close(fd); |
911 |
|
|
|
912 |
|
|
return(0); |
913 |
|
|
} |
914 |
|
|
|
915 |
dpavlin |
1 |
/* Save the Cisco IOS configuration from NVRAM */ |
916 |
|
|
int vm_ios_save_config(vm_instance_t *vm) |
917 |
|
|
{ |
918 |
|
|
char *output; |
919 |
|
|
int res; |
920 |
|
|
|
921 |
|
|
if (!(output = vm_build_filename(vm,"ios_cfg.txt"))) |
922 |
|
|
return(-1); |
923 |
|
|
|
924 |
|
|
res = vm_nvram_extract_config(vm,output); |
925 |
|
|
free(output); |
926 |
|
|
return(res); |
927 |
|
|
} |
928 |
|
|
|
929 |
|
|
/* Set Cisco IOS image to use */ |
930 |
|
|
int vm_ios_set_image(vm_instance_t *vm,char *ios_image) |
931 |
|
|
{ |
932 |
|
|
char *str; |
933 |
|
|
|
934 |
|
|
if (!(str = strdup(ios_image))) |
935 |
|
|
return(-1); |
936 |
|
|
|
937 |
|
|
if (vm->ios_image != NULL) { |
938 |
|
|
free(vm->ios_image); |
939 |
|
|
vm->ios_image = NULL; |
940 |
|
|
} |
941 |
|
|
|
942 |
|
|
vm->ios_image = str; |
943 |
|
|
return(0); |
944 |
|
|
} |
945 |
|
|
|
946 |
|
|
/* Unset a Cisco IOS configuration file */ |
947 |
|
|
void vm_ios_unset_config(vm_instance_t *vm) |
948 |
|
|
{ |
949 |
|
|
if (vm->ios_config != NULL) { |
950 |
|
|
free(vm->ios_config); |
951 |
|
|
vm->ios_config = NULL; |
952 |
|
|
} |
953 |
|
|
} |
954 |
|
|
|
955 |
|
|
/* Set Cisco IOS configuration file to use */ |
956 |
|
|
int vm_ios_set_config(vm_instance_t *vm,char *ios_config) |
957 |
|
|
{ |
958 |
|
|
char *str; |
959 |
|
|
|
960 |
|
|
if (!(str = strdup(ios_config))) |
961 |
|
|
return(-1); |
962 |
|
|
|
963 |
|
|
vm_ios_unset_config(vm); |
964 |
|
|
vm->ios_config = str; |
965 |
|
|
return(0); |
966 |
|
|
} |
967 |
|
|
|
968 |
|
|
/* Extract IOS configuration from NVRAM and write it to a file */ |
969 |
|
|
int vm_nvram_extract_config(vm_instance_t *vm,char *filename) |
970 |
|
|
{ |
971 |
|
|
char *cfg_buffer; |
972 |
|
|
ssize_t cfg_len; |
973 |
|
|
FILE *fd; |
974 |
|
|
|
975 |
|
|
if (!vm->nvram_extract_config) |
976 |
|
|
return(-1); |
977 |
|
|
|
978 |
|
|
/* Extract the IOS configuration */ |
979 |
|
|
if (((cfg_len = vm->nvram_extract_config(vm,&cfg_buffer)) < 0) || |
980 |
|
|
(cfg_buffer == NULL)) |
981 |
|
|
return(-1); |
982 |
|
|
|
983 |
|
|
/* Write configuration to the specified filename */ |
984 |
|
|
if (!(fd = fopen(filename,"w"))) { |
985 |
|
|
vm_error(vm,"unable to create file '%s'\n",filename); |
986 |
|
|
free(cfg_buffer); |
987 |
|
|
return(-1); |
988 |
|
|
} |
989 |
|
|
|
990 |
|
|
fwrite(cfg_buffer,cfg_len,1,fd); |
991 |
|
|
|
992 |
|
|
fclose(fd); |
993 |
|
|
free(cfg_buffer); |
994 |
|
|
return(0); |
995 |
|
|
} |
996 |
|
|
|
997 |
|
|
/* Read an IOS configuraton from a file and push it to NVRAM */ |
998 |
|
|
int vm_nvram_push_config(vm_instance_t *vm,char *filename) |
999 |
|
|
{ |
1000 |
|
|
char *cfg_buffer; |
1001 |
|
|
ssize_t len; |
1002 |
|
|
int res; |
1003 |
|
|
|
1004 |
|
|
if (!vm->nvram_push_config) |
1005 |
|
|
return(-1); |
1006 |
|
|
|
1007 |
|
|
/* Read configuration */ |
1008 |
|
|
if (((len = m_read_file(filename,&cfg_buffer)) <= 0) || !cfg_buffer) |
1009 |
|
|
return(-1); |
1010 |
|
|
|
1011 |
|
|
/* Push it! */ |
1012 |
|
|
res = vm->nvram_push_config(vm,cfg_buffer,len); |
1013 |
|
|
free(cfg_buffer); |
1014 |
|
|
return(res); |
1015 |
|
|
} |
1016 |
|
|
|
1017 |
|
|
/* Save general VM configuration into the specified file */ |
1018 |
|
|
void vm_save_config(vm_instance_t *vm,FILE *fd) |
1019 |
|
|
{ |
1020 |
|
|
if (vm->ios_image) |
1021 |
|
|
fprintf(fd,"vm set_ios %s %s\n",vm->name,vm->ios_image); |
1022 |
|
|
|
1023 |
|
|
fprintf(fd,"vm set_ram %s %u\n",vm->name,vm->ram_size); |
1024 |
|
|
fprintf(fd,"vm set_nvram %s %u\n",vm->name,vm->nvram_size); |
1025 |
|
|
fprintf(fd,"vm set_ram_mmap %s %u\n",vm->name,vm->ram_mmap); |
1026 |
|
|
fprintf(fd,"vm set_clock_divisor %s %u\n",vm->name,vm->clock_divisor); |
1027 |
|
|
fprintf(fd,"vm set_conf_reg %s 0x%4.4x\n",vm->name,vm->conf_reg_setup); |
1028 |
|
|
|
1029 |
|
|
if (vm->vtty_con_type == VTTY_TYPE_TCP) |
1030 |
|
|
fprintf(fd,"vm set_con_tcp_port %s %d\n",vm->name,vm->vtty_con_tcp_port); |
1031 |
|
|
|
1032 |
|
|
if (vm->vtty_aux_type == VTTY_TYPE_TCP) |
1033 |
|
|
fprintf(fd,"vm set_aux_tcp_port %s %d\n",vm->name,vm->vtty_aux_tcp_port); |
1034 |
|
|
} |