palacios/include/palacios/vmm_dev_mgr.h

   1 /*
   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.
   5  *
   6  * The V3VEE Project is a joint project between Northwestern University
   7  * and the University of New Mexico.  You can find out more at
   8  * http://www.v3vee.org
   9  *
  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.
  13  *
  14  * Author: Jack Lange <jarusl@cs.northwestern.edu>
  15  *
  16  * This is free software.  You are permitted to use,
  17  * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
  18  */
  19
  20 #ifndef _VMM_DEV_MGR
  21 #define _VMM_DEV_MGR
  22
  23 #ifdef __V3VEE__
  24
  25 #include <palacios/vmm_types.h>
  26 #include <palacios/vmm_list.h>
  27 #include <palacios/vmm_string.h>
  28 #include <palacios/vmm_hashtable.h>
  29 #include <palacios/vmm_config.h>
  30
  31
  32 struct v3_vm_info;
  33
  34 struct v3_device_ops;
  35
  36 typedef void * v3_dev_data_t;
  37
  38 struct vm_device;
  39
  40 struct vm_device {
  41     char name[32];
  42
  43     void * private_data;
  44
  45     struct v3_device_ops * ops;
  46
  47     struct v3_vm_info * vm;
  48
  49     struct list_head dev_link;
  50
  51
  52     uint_t num_io_hooks;
  53     struct list_head io_hooks;
  54 };
  55
  56
  57 struct vmm_dev_mgr {
  58     uint_t num_devs;
  59     struct list_head dev_list;
  60     struct hashtable * dev_table;
  61
  62     struct list_head blk_list;
  63     struct hashtable * blk_table;
  64
  65     struct list_head net_list;
  66     struct hashtable * net_table;
  67
  68     struct list_head char_list;
  69     struct hashtable * char_table;
  70
  71     struct list_head cons_list;
  72     struct hashtable * cons_table;
  73
  74 };
  75
  76 int v3_create_device(struct v3_vm_info * vm, const char * dev_name, v3_cfg_tree_t * cfg);
  77
  78 struct vm_device * v3_find_dev(struct v3_vm_info * info, const char * dev_name);
  79
  80
  81 // Registration of devices
  82
  83 //
  84 // The following device manager functions should only be called
  85 // when the guest is stopped
  86 //
  87
  88
  89
  90 int v3_init_dev_mgr(struct v3_vm_info * vm);
  91 int v3_deinit_dev_mgr(struct v3_vm_info * vm);
  92
  93 int v3_free_vm_devices(struct v3_vm_info * vm);
  94
  95
  96
  97
  98
  99
 100
 101 int V3_init_devices();
 102
 103
 104
 105 struct v3_device_ops {
 106     int (*free)(void * private_data);
 107
 108     //int (*save)(struct vm_device *dev, struct *iostream);
 109     //int (*restore)(struct vm_device *dev, struct *iostream);
 110 };
 111
 112
 113
 114
 115
 116
 117 int v3_dev_hook_io(struct vm_device   * dev,
 118                    ushort_t            port,
 119                    int (*read)(struct guest_info * core, ushort_t port, void * dst, uint_t length, void * priv_data),
 120                    int (*write)(struct guest_info * core, ushort_t port, void * src, uint_t length, void * priv_data));
 121
 122 int v3_dev_unhook_io(struct vm_device   * dev,
 123                      ushort_t            port);
 124
 125
 126
 127 struct vm_device * v3_add_device(struct v3_vm_info * vm, char * name,
 128                                  struct v3_device_ops * ops, void * private_data);
 129 int v3_remove_device(struct vm_device * dev);
 130
 131
 132 int v3_attach_device(struct v3_vm_info * vm, struct vm_device * dev);
 133 int v3_detach_device(struct vm_device * dev);
 134 struct vm_device * v3_allocate_device(char * name, struct v3_device_ops * ops, void * private_data);
 135
 136
 137 struct v3_device_info {
 138     char * name;
 139     int (*init)(struct v3_vm_info * info, v3_cfg_tree_t * cfg);
 140 };
 141
 142
 143 #define device_register(name, init_dev_fn)                              \
 144     static char _v3_device_name[] = name;                               \
 145     static struct v3_device_info _v3_device                             \
 146     __attribute__((__used__))                                           \
 147         __attribute__((unused, __section__ ("_v3_devices"),             \
 148                        aligned(sizeof(addr_t))))                        \
 149         = {_v3_device_name , init_dev_fn};
 150
 151
 152
 153
 154 void v3_print_dev_mgr(struct v3_vm_info * vm);
 155
 156
 157 struct v3_dev_blk_ops {
 158     uint64_t (*get_capacity)(void * private_data);
 159     // Reads always operate on 2048 byte blocks
 160     int (*read)(uint8_t * buf, uint64_t lba, uint64_t num_bytes, void * private_data);
 161     int (*write)(uint8_t * buf, uint64_t lba, uint64_t num_bytes, void * private_data);
 162 };
 163
 164 struct v3_dev_net_ops {
 165     /* Backend implemented functions */
 166     int (*send)(uint8_t * buf, uint32_t count, void * private_data);
 167     void (*start_rx)(void * back_data);
 168     void (*stop_rx)(void * back_data);
 169
 170     /* Frontend implemented functions */
 171     int (*recv)(uint8_t * buf, uint32_t count, void * frnt_data);
 172     void (*poll)(struct v3_vm_info * vm, void * frnt_data);
 173     void (*start_tx)(void * frnt_data);
 174     void (*stop_tx)(void * frnt_data);
 175
 176     /* This is ugly... */
 177     void * frontend_data;
 178 };
 179
 180 struct v3_dev_console_ops {
 181     int (*update_screen)(uint_t x, uint_t y, uint_t length, uint8_t * fb_data, void * private_data);
 182     int (*update_cursor)(uint_t x, uint_t y, void * private_data);
 183     int (*scroll)(int rows, void * private_data);
 184
 185     /* frontend implemented functions */
 186     int (*get_screen)(uint_t x, uint_t y, uint_t length, void * frontend_data);
 187     void * push_fn_arg;
 188 };
 189
 190 struct v3_dev_char_ops {
 191     /* Backend implemented functions */
 192     int (*write)(uint8_t * buf, uint64_t len, void * private_data);
 193     //  int (*read)(uint8_t * buf, uint64_t len, void * private_data);
 194
 195     /* Frontend Implemented functions */
 196     int (*push)(struct v3_vm_info * vm, uint8_t * buf, uint64_t len, void * private_data);
 197 };
 198
 199
 200 int v3_dev_add_blk_frontend(struct v3_vm_info * vm,
 201                             char * name,
 202                             int (*connect)(struct v3_vm_info * vm,
 203                                             void * frontend_data,
 204                                             struct v3_dev_blk_ops * ops,
 205                                             v3_cfg_tree_t * cfg,
 206                                             void * private_data),
 207                             void * priv_data);
 208
 209 int v3_dev_connect_blk(struct v3_vm_info * vm,
 210                        char * frontend_name,
 211                        struct v3_dev_blk_ops * ops,
 212                        v3_cfg_tree_t * cfg,
 213                        void * private_data);
 214
 215 int v3_dev_add_net_frontend(struct v3_vm_info * vm,
 216                             char * name,
 217                             int (*connect)(struct v3_vm_info * vm,
 218                                             void * frontend_data,
 219                                             struct v3_dev_net_ops * ops,
 220                                             v3_cfg_tree_t * cfg,
 221                                             void * private_data),
 222                             void * priv_data);
 223
 224 int v3_dev_connect_net(struct v3_vm_info * vm,
 225                        char * frontend_name,
 226                        struct v3_dev_net_ops * ops,
 227                        v3_cfg_tree_t * cfg,
 228                        void * private_data);
 229
 230
 231
 232
 233 int v3_dev_add_console_frontend(struct v3_vm_info * vm,
 234                                 char * name,
 235                                 int (*connect)(struct v3_vm_info * vm,
 236                                                void * frontend_data,
 237                                                struct v3_dev_console_ops * ops,
 238                                                v3_cfg_tree_t * cfg,
 239                                                void * private_data),
 240                                 void * priv_data);
 241
 242 int v3_dev_connect_console(struct v3_vm_info * vm,
 243                            char * frontend_name,
 244                            struct v3_dev_console_ops * ops,
 245                            v3_cfg_tree_t * cfg,
 246                            void * private_data);
 247
 248
 249
 250 int v3_dev_add_char_frontend(struct v3_vm_info * vm,
 251                              char * name,
 252                              int (*connect)(struct v3_vm_info * vm,
 253                                             void * frontend_data,
 254                                             struct v3_dev_char_ops * ops,
 255                                             v3_cfg_tree_t * cfg,
 256                                             void * private_data,
 257                                             void ** push_fn_arg),
 258                              void * priv_data);
 259
 260 int v3_dev_connect_char(struct v3_vm_info * vm,
 261                         char * frontend_name,
 262                         struct v3_dev_char_ops * ops,
 263                         v3_cfg_tree_t * cfg,
 264                         void * private_data,
 265                         void ** push_fn_arg);
 266
 267
 268 #endif // ! __V3VEE__
 269
 270 #endif