2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
11 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Jack Lange <jarusl@cs.northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
20 #include <palacios/vmm_dev_mgr.h>
21 #include <palacios/vm_guest.h>
22 #include <palacios/vmm.h>
23 #include <palacios/vmm_decoder.h>
26 #ifndef CONFIG_DEBUG_DEV_MGR
28 #define PrintDebug(fmt, args...)
32 static struct hashtable * master_dev_table = NULL;
34 static uint_t dev_hash_fn(addr_t key) {
35 char * name = (char *)key;
36 return v3_hash_buffer((uchar_t *)name, strlen(name));
39 static int dev_eq_fn(addr_t key1, addr_t key2) {
40 char * name1 = (char *)key1;
41 char * name2 = (char *)key2;
43 return (strcmp(name1, name2) == 0);
47 int v3_init_devices() {
48 extern struct v3_device_info __start__v3_devices[];
49 extern struct v3_device_info __stop__v3_devices[];
50 struct v3_device_info * tmp_dev = __start__v3_devices;
53 #ifdef CONFIG_DEBUG_DEV_MGR
55 int num_devices = (__stop__v3_devices - __start__v3_devices) / sizeof(struct v3_device_info);
56 PrintDebug("%d Virtual devices registered with Palacios\n", num_devices);
60 PrintDebug("Start addres=%p, Stop address=%p\n", __start__v3_devices, __stop__v3_devices);
62 master_dev_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn);
66 while (tmp_dev != __stop__v3_devices) {
67 PrintDebug("Device: %s\n", tmp_dev->name);
69 if (v3_htable_search(master_dev_table, (addr_t)(tmp_dev->name))) {
70 PrintError("Multiple instance of device (%s)\n", tmp_dev->name);
74 if (v3_htable_insert(master_dev_table,
75 (addr_t)(tmp_dev->name),
76 (addr_t)(tmp_dev->init)) == 0) {
77 PrintError("Could not add device %s to master list\n", tmp_dev->name);
81 tmp_dev = &(__start__v3_devices[++i]);
89 int v3_init_dev_mgr(struct guest_info * info) {
90 struct vmm_dev_mgr * mgr = &(info->dev_mgr);
92 INIT_LIST_HEAD(&(mgr->dev_list));
95 mgr->dev_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn);
97 INIT_LIST_HEAD(&(mgr->blk_list));
98 INIT_LIST_HEAD(&(mgr->net_list));
99 INIT_LIST_HEAD(&(mgr->console_list));
101 mgr->blk_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn);
102 mgr->net_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn);
103 mgr->console_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn);
109 int v3_dev_mgr_deinit(struct guest_info * info) {
110 struct vm_device * dev;
111 struct vmm_dev_mgr * mgr = &(info->dev_mgr);
112 struct vm_device * tmp;
114 list_for_each_entry_safe(dev, tmp, &(mgr->dev_list), dev_link) {
115 v3_detach_device(dev);
124 int v3_create_device(struct guest_info * info, const char * dev_name, v3_cfg_tree_t * cfg) {
125 int (*dev_init)(struct guest_info * info, void * cfg_data);
127 dev_init = (void *)v3_htable_search(master_dev_table, (addr_t)dev_name);
129 if (dev_init == NULL) {
130 PrintError("Could not find device %s in master device table\n", dev_name);
135 if (dev_init(info, cfg) == -1) {
136 PrintError("Could not initialize Device %s\n", dev_name);
144 void v3_free_device(struct vm_device * dev) {
150 struct vm_device * v3_find_dev(struct guest_info * info, const char * dev_name) {
151 struct vmm_dev_mgr * mgr = &(info->dev_mgr);
157 return (struct vm_device *)v3_htable_search(mgr->dev_table, (addr_t)dev_name);
161 /****************************************************************/
162 /* The remaining functions are called by the devices themselves */
163 /****************************************************************/
166 int v3_dev_hook_io(struct vm_device * dev, uint16_t port,
167 int (*read)(uint16_t port, void * dst, uint_t length, struct vm_device * dev),
168 int (*write)(uint16_t port, void * src, uint_t length, struct vm_device * dev)) {
169 return v3_hook_io_port(dev->vm, port,
170 (int (*)(ushort_t, void *, uint_t, void *))read,
171 (int (*)(ushort_t, void *, uint_t, void *))write,
176 int v3_dev_unhook_io(struct vm_device * dev, uint16_t port) {
177 return v3_unhook_io_port(dev->vm, port);
182 int v3_detach_device(struct vm_device * dev) {
183 struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr);
187 list_del(&(dev->dev_link));
196 struct vm_device * v3_allocate_device(char * name,
197 struct v3_device_ops * ops,
198 void * private_data) {
199 struct vm_device * dev = NULL;
201 dev = (struct vm_device*)V3_Malloc(sizeof(struct vm_device));
203 strncpy(dev->name, name, 32);
205 dev->private_data = private_data;
213 int v3_attach_device(struct guest_info * vm, struct vm_device * dev ) {
214 struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
218 list_add(&(dev->dev_link), &(mgr->dev_list));
222 v3_htable_insert(mgr->dev_table, (addr_t)(dev->name), (addr_t)dev);
229 void v3_print_dev_mgr(struct guest_info * info) {
230 struct vmm_dev_mgr * mgr = &(info->dev_mgr);
231 struct vm_device * dev;
233 V3_Print("%d devices registered with manager\n", mgr->num_devs);
235 list_for_each_entry(dev, &(mgr->dev_list), dev_link) {
236 V3_Print("Device: %s\n", dev->name);
245 struct blk_frontend {
246 int (*connect)(struct guest_info * info,
247 void * frontend_data,
248 struct v3_dev_blk_ops * ops,
253 struct list_head blk_node;
260 int v3_dev_add_blk_frontend(struct guest_info * info,
262 int (*connect)(struct guest_info * info,
263 void * frontend_data,
264 struct v3_dev_blk_ops * ops,
269 struct blk_frontend * frontend = NULL;
271 frontend = (struct blk_frontend *)V3_Malloc(sizeof(struct blk_frontend));
272 memset(frontend, 0, sizeof(struct blk_frontend));
274 frontend->connect = connect;
275 frontend->priv_data = priv_data;
277 list_add(&(frontend->blk_node), &(info->dev_mgr.blk_list));
278 v3_htable_insert(info->dev_mgr.blk_table, (addr_t)(name), (addr_t)frontend);
283 int v3_dev_connect_blk(struct guest_info * info,
284 char * frontend_name,
285 struct v3_dev_blk_ops * ops,
287 void * private_data) {
289 struct blk_frontend * frontend = NULL;
291 frontend = (struct blk_frontend *)v3_htable_search(info->dev_mgr.blk_table,
292 (addr_t)frontend_name);
294 if (frontend == NULL) {
295 PrintError("Could not find frontend blk device %s\n", frontend_name);
299 if (frontend->connect(info, frontend->priv_data, ops, cfg, private_data) == -1) {
300 PrintError("Error connecting to block frontend %s\n", frontend_name);