X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_dev_mgr.c;h=7d44131511580c80d39305bac232aa1553af4280;hb=c30d1b88a60c3a8df426ce81553675bbe4afef52;hp=81f053c3b0e0d3a54cbe6b848728d8105084f541;hpb=7841dc573457c334a0f3b6e9186d26b1776c400f;p=palacios.git diff --git a/palacios/src/palacios/vmm_dev_mgr.c b/palacios/src/palacios/vmm_dev_mgr.c index 81f053c..7d44131 100644 --- a/palacios/src/palacios/vmm_dev_mgr.c +++ b/palacios/src/palacios/vmm_dev_mgr.c @@ -1,295 +1,772 @@ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2008, Jack Lange + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Jack Lange + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ -#include #include #include #include +#include + +#ifdef V3_CONFIG_CHECKPOINT +#include +#endif -extern struct vmm_os_hooks *os_hooks; -#ifndef NULL -#define NULL 0 +#ifndef V3_CONFIG_DEBUG_DEV_MGR +#undef PrintDebug +#define PrintDebug(fmt, args...) #endif -int dev_mgr_init(struct vmm_dev_mgr *mgr, struct guest_info *vm) -{ - mgr->vm=vm; - mgr->dev_list=NULL; - mgr->num_devices=0; - return 0; + +static struct hashtable * master_dev_table = NULL; + +static uint_t dev_hash_fn(addr_t key) { + char * name = (char *)key; + return v3_hash_buffer((uchar_t *)name, strlen(name)); } +static int dev_eq_fn(addr_t key1, addr_t key2) { + char * name1 = (char *)key1; + char * name2 = (char *)key2; + + return (strcmp(name1, name2) == 0); +} -int dev_mgr_deinit(struct vmm_dev_mgr *mgr) -{ - int rc; - while (mgr->dev_list) { - rc=dev_mgr_detach_device(mgr->vm,mgr->dev_list); - if (rc) { - // Bad bad bad +int V3_init_devices() { + extern struct v3_device_info __start__v3_devices[]; + extern struct v3_device_info __stop__v3_devices[]; + struct v3_device_info * tmp_dev = __start__v3_devices; + int i = 0; + +#ifdef V3_CONFIG_DEBUG_DEV_MGR + { + int num_devices = (__stop__v3_devices - __start__v3_devices) / sizeof(struct v3_device_info); + PrintDebug("%d Virtual devices registered with Palacios\n", num_devices); } - } - return 0; +#endif + + PrintDebug("Start addres=%p, Stop address=%p\n", __start__v3_devices, __stop__v3_devices); + + master_dev_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn); + + + + while (tmp_dev != __stop__v3_devices) { + PrintDebug("Device: %s\n", tmp_dev->name); + + if (v3_htable_search(master_dev_table, (addr_t)(tmp_dev->name))) { + PrintError("Multiple instance of device (%s)\n", tmp_dev->name); + return -1; + } + + if (v3_htable_insert(master_dev_table, + (addr_t)(tmp_dev->name), + (addr_t)(tmp_dev->init)) == 0) { + PrintError("Could not add device %s to master list\n", tmp_dev->name); + return -1; + } + + tmp_dev = &(__start__v3_devices[++i]); + } + + + return 0; } -int dev_mgr_attach_device(struct guest_info *vm, struct vm_device *device) -{ - struct vmm_dev_mgr *mgr= &(vm->dev_mgr); - - if (device->io_hooks || device->mem_hooks) { - return -1; - } - - device->next = mgr->dev_list; - device->prev = 0; - if (device->next) { - device->next->prev = device; - } - mgr->dev_list = device; - - device->vm=vm; - - return 0; + +int V3_deinit_devices() { + v3_free_htable(master_dev_table, 0, 0); + return 0; } -int dev_mgr_detach_device(struct guest_info *vm, struct vm_device *device) -{ - if (device->prev==0) { - vm->dev_mgr.dev_list = device->next; - } else { - device->prev->next = device->next; - } - if (device->next) { - device->next->prev=device->prev; - } - - // avoid interrupts here - - device->deinit_device(device); - - device->vm=NULL; - return 0; + +int v3_init_dev_mgr(struct v3_vm_info * vm) { + struct vmm_dev_mgr * mgr = &(vm->dev_mgr); + + INIT_LIST_HEAD(&(mgr->dev_list)); + mgr->num_devs = 0; + + mgr->dev_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn); + + INIT_LIST_HEAD(&(mgr->blk_list)); + INIT_LIST_HEAD(&(mgr->net_list)); + INIT_LIST_HEAD(&(mgr->char_list)); + INIT_LIST_HEAD(&(mgr->cons_list)); + + mgr->blk_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn); + mgr->net_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn); + mgr->char_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn); + mgr->cons_table = v3_create_htable(0, dev_hash_fn, dev_eq_fn); + + return 0; } -#define INSERT_FRONT(listhead,item) \ - do { \ - if (!(listhead)) { \ - (listhead)=(item); \ - (item)->prev=NULL; \ - (item)->next=NULL; \ - } else { \ - (item)->prev=NULL; \ - (item)->next=(listhead); \ - if ((listhead)->next) { \ - (listhead)->next->prev=(item); \ - } \ - (listhead)=(item); \ - } \ - } while (0) - -#define DELETE(listhead,item) \ - do { \ - if ((item)->prev) { \ - (item)->prev->next=(item)->next; \ - } else { \ - (listhead)=(item)->next; \ - } \ - if ((item)->next) { \ - (item)->next->prev=(item)->prev; \ - } \ - } while (0) +int v3_free_vm_devices(struct v3_vm_info * vm) { + struct vmm_dev_mgr * mgr = &(vm->dev_mgr); + struct vm_device * dev; + struct vm_device * tmp; + + list_for_each_entry_safe(dev, tmp, &(mgr->dev_list), dev_link) { + v3_remove_device(dev); + } + + return 0; +} + +#ifdef V3_CONFIG_CHECKPOINT + +int v3_save_vm_devices(struct v3_vm_info * vm, struct v3_chkpt * chkpt) { + struct vmm_dev_mgr * mgr = &(vm->dev_mgr); + struct vm_device * dev; + struct v3_chkpt_ctx * dev_mgr_ctx = NULL; + + uint32_t num_saved_devs = 0; + uint32_t table_len = mgr->num_devs * 32; + char * name_table = NULL; + uint32_t tbl_offset = 0; + name_table = V3_Malloc(table_len); - + memset(name_table, 0, table_len); + -int dev_mgr_hook_io(struct guest_info *vm, - struct vm_device *device, - ushort_t portno, - enum access_control control, - enum access_type atype) -{ - struct vm_device_io_hook *hook = os_hooks->malloc(sizeof(struct vm_device_io_hook)); - - if (!hook) { - return -1; - } - - int (*read)(ushort_t, void *, uint_t, void *) = NULL; - int (*write)(ushort_t, void *, uint_t, void *) = NULL; - - switch (control) { - case DEVICE_EMULATED: - switch (atype) { - case DEVICE_READ: - read = (int (*)(ushort_t, void *,uint_t, void *)) (device->read_io_port); - break; - case DEVICE_WRITE: - write = (int (*)(ushort_t, void *, uint_t, void *)) (device->write_io_port); - break; - case DEVICE_READWRITE: - read = (int (*)(ushort_t, void *, uint_t, void *)) (device->read_io_port); - write = (int (*)(ushort_t, void *, uint_t, void *)) (device->write_io_port); - break; + dev_mgr_ctx = v3_chkpt_open_ctx(chkpt, NULL, "devices"); + + list_for_each_entry(dev, &(mgr->dev_list), dev_link) { + + if (dev->ops->save) { + struct v3_chkpt_ctx * dev_ctx = NULL; + + V3_Print("Saving state for device (%s)\n", dev->name); + + dev_ctx = v3_chkpt_open_ctx(chkpt, dev_mgr_ctx, dev->name); + + dev->ops->save(dev_ctx, dev->private_data); + + v3_chkpt_close_ctx(dev_ctx); + + // Error checking?? + + strncpy(name_table + tbl_offset, dev->name, 32); + tbl_offset += 32; + num_saved_devs++; + } else { + PrintError("Error: %s save() not implemented\n", dev->name); + } } - break; - case DEVICE_PASSTHROUGH: - read=write=NULL; - break; - } + + + // Specify which devices were saved + v3_chkpt_save(dev_mgr_ctx, "num_devs", 4, &num_saved_devs); + v3_chkpt_save(dev_mgr_ctx, "names", table_len, name_table); + V3_Free(name_table); + + v3_chkpt_close_ctx(dev_mgr_ctx); - hook_io_port(&(vm->io_map), - portno, - read, - write, - device); - - hook->control=control; - hook->atype=atype; - hook->guest_port = portno; - - INSERT_FRONT(device->io_hooks,hook); - - return 0; + return 0; } -int dev_mgr_unhook_io(struct guest_info *vm, - struct vm_device *device, - ushort_t portno) -{ - struct vm_device_io_hook *hook = device->io_hooks; +int v3_load_vm_devices(struct v3_vm_info * vm, struct v3_chkpt * chkpt) { + struct vm_device * dev; + struct v3_chkpt_ctx * dev_mgr_ctx = NULL; + uint32_t num_devs = 0; + char * name_table = NULL; + int i = 0; + + dev_mgr_ctx = v3_chkpt_open_ctx(chkpt, NULL, "devices"); + + v3_chkpt_load(dev_mgr_ctx, "num_devs", 4, &num_devs); + + V3_Print("Loading State for %d devices\n", num_devs); + + name_table = V3_Malloc(32 * num_devs); + + v3_chkpt_load(dev_mgr_ctx, "names", 32 * num_devs, name_table); + + for (i = 0; i < num_devs; i++) { + char * name = &(name_table[i * 32]); + struct v3_chkpt_ctx * dev_ctx = NULL; + dev = v3_find_dev(vm, name); + + if (!dev) { + PrintError("Tried to load state into non existant device: %s\n", name); + continue; + } + + if (!dev->ops->load) { + PrintError("Error Device (%s) does not support load operation\n", name); + continue; + } + + dev_ctx = v3_chkpt_open_ctx(chkpt, dev_mgr_ctx, name); + + if (!dev_ctx) { + PrintError("Error missing device context (%s)\n", name); + continue; + } - while (hook) { - if (hook->guest_port==portno) { - DELETE(device->io_hooks,hook); - break; + + dev->ops->load(dev_ctx, dev->private_data); + } + + return 0; +} + + +#endif + +static int free_frontends(struct v3_vm_info * vm, struct vmm_dev_mgr * mgr); + +int v3_deinit_dev_mgr(struct v3_vm_info * vm) { + struct vmm_dev_mgr * mgr = &(vm->dev_mgr); + + // clear frontend lists + + free_frontends(vm, mgr); + + + + v3_free_htable(mgr->dev_table, 0, 0); + + return 0; +} + + + +int v3_create_device(struct v3_vm_info * vm, const char * dev_name, v3_cfg_tree_t * cfg) { + int (*dev_init)(struct v3_vm_info * vm, void * cfg_data); + + dev_init = (void *)v3_htable_search(master_dev_table, (addr_t)dev_name); + + if (dev_init == NULL) { + PrintError("Could not find device %s in master device table\n", dev_name); + return -1; + } + + + if (dev_init(vm, cfg) == -1) { + PrintError("Could not initialize Device %s\n", dev_name); + return -1; + } + + return 0; +} + + + + +struct vm_device * v3_find_dev(struct v3_vm_info * vm, const char * dev_name) { + struct vmm_dev_mgr * mgr = &(vm->dev_mgr); + + if (!dev_name) { + return NULL; + } + + return (struct vm_device *)v3_htable_search(mgr->dev_table, (addr_t)dev_name); +} + + +/****************************************************************/ +/* The remaining functions are called by the devices themselves */ +/****************************************************************/ + +typedef enum {DEV_IO_HOOK, DEV_MSR_HOOK, DEV_CPUID_HOOK, DEV_MEM_HOOK, DEV_HCALL_HOOK} dev_rsrc_type_t; + +struct dev_rsrc { + dev_rsrc_type_t type; + uint64_t rsrc; + + struct list_head node; +}; + + + +static int add_resource(struct vm_device * dev, dev_rsrc_type_t type, uint64_t rsrc_id) { + struct dev_rsrc * resource = NULL; + + resource = V3_Malloc(sizeof(struct dev_rsrc)); + + if (resource == NULL) { + PrintError("Error: Could not allocate device resource\n"); + return -1; + } + + resource->rsrc = rsrc_id; + resource->type = type; + + list_add(&(resource->node), &(dev->res_hooks)); + return 0; +} + +static int free_resource(struct vm_device * dev, dev_rsrc_type_t type, uint64_t rsrc_id) { + struct dev_rsrc * resource = NULL; + struct dev_rsrc * tmp; + + list_for_each_entry_safe(resource, tmp, &(dev->res_hooks), node) { + if ((resource->type == type) && + (resource->rsrc == rsrc_id)) { + + list_del(&(resource->node)); + V3_Free(resource); + + return 0; + } } - } - if (!hook) { - // Very bad - unhooking something that doesn't exist! return -1; - } +} + - return unhook_io_port(&(vm->io_map), - portno); +int v3_dev_hook_io(struct vm_device * dev, uint16_t port, + int (*read)(struct guest_info * core, uint16_t port, void * dst, uint_t length, void * priv_data), + int (*write)(struct guest_info * core, uint16_t port, void * src, uint_t length, void * priv_data)) { + int ret = 0; + + ret = v3_hook_io_port(dev->vm, port, + (int (*)(struct guest_info * core, uint16_t, void *, uint_t, void *))read, + (int (*)(struct guest_info * core, uint16_t, void *, uint_t, void *))write, + (void *)dev->private_data); + + if (ret == -1) { + return -1; + } + + if (add_resource(dev, DEV_IO_HOOK, port) == -1) { + v3_unhook_io_port(dev->vm, port); + PrintError("Could not allocate io hook dev state\n"); + return -1; + } + + return 0; } +int v3_dev_unhook_io(struct vm_device * dev, uint16_t port) { + if (free_resource(dev, DEV_IO_HOOK, port) == 0) { + return v3_unhook_io_port(dev->vm, port); + } -int dev_mgr_hook_mem(struct guest_info *vm, - struct vm_device *device, - void *guest_physical_address_start, - void *guest_physical_address_end, - enum access_control control, - enum access_type atype) -{ + return -1; +} + + +int v3_dev_hook_msr(struct vm_device * dev, uint32_t msr, + int (*read)(struct guest_info * core, uint32_t msr, struct v3_msr * dst, void * priv_data), + int (*write)(struct guest_info * core, uint32_t msr, struct v3_msr src, void * priv_data)) { + int ret = 0; + + ret = v3_hook_msr(dev->vm, msr, read, write, dev->private_data); + + if (ret == -1) { + return -1; + } + + if (add_resource(dev, DEV_MSR_HOOK, msr) == -1) { + v3_unhook_msr(dev->vm, msr); + return -1; + } + + return 0; +} + +int v3_dev_unhook_msr(struct vm_device * dev, uint32_t msr) { + if (free_resource(dev, DEV_MSR_HOOK, msr) == 0) { + return v3_unhook_msr(dev->vm, msr); + } - struct vm_device_mem_hook *hook = os_hooks->malloc(sizeof(struct vm_device_mem_hook)); - - if (!hook) { return -1; - } - - int (*read)(ushort_t, void *, uint_t, void *) = NULL; - int (*write)(ushort_t, void *, uint_t, void *) = NULL; - - switch (control) { - case DEVICE_EMULATED: - switch (atype) { - case DEVICE_READ: - read = (int (*)(ushort_t, void *, uint_t, void *))(device->read_mapped_memory); - break; - case DEVICE_WRITE: - write = (int (*)(ushort_t, void *, uint_t, void *))(device->write_mapped_memory); - break; - case DEVICE_READWRITE: - read = (int (*)(ushort_t, void *, uint_t, void *))(device->read_mapped_memory); - write = (int (*)(ushort_t, void *, uint_t, void *))(device->write_mapped_memory); - break; +} + + + + +int v3_remove_device(struct vm_device * dev) { + struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr); + struct dev_rsrc * resource = NULL; + struct dev_rsrc * tmp; + + list_for_each_entry_safe(resource, tmp, &(dev->res_hooks), node) { + if (resource->type == DEV_IO_HOOK) { + v3_unhook_io_port(dev->vm, (uint16_t)(resource->rsrc)); + } else if (resource->type == DEV_MSR_HOOK) { + v3_unhook_msr(dev->vm, (uint32_t)(resource->rsrc)); + } + + list_del(&(resource->node)); + V3_Free(resource); + } + + if (dev->ops->free) { + dev->ops->free(dev->private_data); + } else { + PrintError("Error: %s free() not implemented\n", dev->name); + } + + list_del(&(dev->dev_link)); + mgr->num_devs--; + + dev->vm = NULL; + + V3_Free(dev); + return -1; +} + + +struct vm_device * v3_add_device(struct v3_vm_info * vm, + char * name, + struct v3_device_ops * ops, + void * private_data) { + struct vmm_dev_mgr * mgr = &(vm->dev_mgr); + struct vm_device * dev = NULL; + + dev = (struct vm_device *)V3_Malloc(sizeof(struct vm_device)); + + if (dev == NULL) { + return NULL; + } + + INIT_LIST_HEAD(&(dev->res_hooks)); + + strncpy(dev->name, name, 32); + dev->ops = ops; + dev->private_data = private_data; + + dev->vm = vm; + + list_add(&(dev->dev_link), &(mgr->dev_list)); + mgr->num_devs++; + + v3_htable_insert(mgr->dev_table, (addr_t)(dev->name), (addr_t)dev); + + return dev; +} + + +void v3_print_dev_mgr(struct v3_vm_info * vm) { + struct vmm_dev_mgr * mgr = &(vm->dev_mgr); + struct vm_device * dev; + + V3_Print("%d devices registered with manager\n", mgr->num_devs); + + list_for_each_entry(dev, &(mgr->dev_list), dev_link) { + V3_Print("Device: %s\n", dev->name); + } + + return; +} + + + + +struct blk_frontend { + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_blk_ops * ops, + v3_cfg_tree_t * cfg, + void * priv_data); + + + struct list_head blk_node; + + void * priv_data; +}; + + + +int v3_dev_add_blk_frontend(struct v3_vm_info * vm, + char * name, + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_blk_ops * ops, + v3_cfg_tree_t * cfg, + void * priv_data), + void * priv_data) { + + struct blk_frontend * frontend = NULL; + + frontend = (struct blk_frontend *)V3_Malloc(sizeof(struct blk_frontend)); + memset(frontend, 0, sizeof(struct blk_frontend)); + + frontend->connect = connect; + frontend->priv_data = priv_data; + + list_add(&(frontend->blk_node), &(vm->dev_mgr.blk_list)); + v3_htable_insert(vm->dev_mgr.blk_table, (addr_t)(name), (addr_t)frontend); + + return 0; +} + +int v3_dev_connect_blk(struct v3_vm_info * vm, + char * frontend_name, + struct v3_dev_blk_ops * ops, + v3_cfg_tree_t * cfg, + void * private_data) { + + struct blk_frontend * frontend = NULL; + + frontend = (struct blk_frontend *)v3_htable_search(vm->dev_mgr.blk_table, + (addr_t)frontend_name); + + if (frontend == NULL) { + PrintError("Could not find frontend blk device %s\n", frontend_name); + return 0; + } + + if (frontend->connect(vm, frontend->priv_data, ops, cfg, private_data) == -1) { + PrintError("Error connecting to block frontend %s\n", frontend_name); + return -1; } - break; - case DEVICE_PASSTHROUGH: - read=write=NULL; - break; - } + + return 0; +} + + + +struct net_frontend { + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_net_ops * ops, + v3_cfg_tree_t * cfg, + void * priv_data); - /* not implemented yet - hook_memory(vm->mem_map, - guest_physical_address_start, - guest_physical_address_end, - read, - write, - device); + struct list_head net_node; - */ + void * priv_data; +}; - return -1; // remove when hook_memory works - hook->control=control; - hook->atype=atype; - hook->guest_physical_start = guest_physical_address_start; - hook->guest_physical_end = guest_physical_address_end; +int v3_dev_add_net_frontend(struct v3_vm_info * vm, + char * name, + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_net_ops * ops, + v3_cfg_tree_t * cfg, + void * private_data), + void * priv_data) +{ + struct net_frontend * frontend = NULL; - - INSERT_FRONT(device->mem_hooks,hook); + frontend = (struct net_frontend *)V3_Malloc(sizeof(struct net_frontend)); + memset(frontend, 0, sizeof(struct net_frontend)); + + frontend->connect = connect; + frontend->priv_data = priv_data; + + list_add(&(frontend->net_node), &(vm->dev_mgr.net_list)); + v3_htable_insert(vm->dev_mgr.net_table, (addr_t)(name), (addr_t)frontend); - return 0; - + return 0; } -int dev_mgr_unhook_mem(struct guest_info *vm, - struct vm_device *device, - void *guest_physical_start, - void *guest_physical_end) +int v3_dev_connect_net(struct v3_vm_info * vm, + char * frontend_name, + struct v3_dev_net_ops * ops, + v3_cfg_tree_t * cfg, + void * private_data) { - struct vm_device_mem_hook *hook = device->mem_hooks; + struct net_frontend * frontend = NULL; - while (hook) { - if (hook->guest_physical_start==guest_physical_start && - hook->guest_physical_end==guest_physical_end) { - DELETE(device->mem_hooks,hook); - break; + frontend = (struct net_frontend *)v3_htable_search(vm->dev_mgr.net_table, + (addr_t)frontend_name); + + if (frontend == NULL) { + PrintError("Could not find frontend net device %s\n", frontend_name); + return 0; } - } - if (!hook) { - // Very bad - unhooking something that doesn't exist! - return -1; - } + if (frontend->connect(vm, frontend->priv_data, ops, cfg, private_data) == -1) { + PrintError("Error connecting to net frontend %s\n", frontend_name); + return -1; + } + return 0; +} - /* not implemented yet - return unhook_mem_port(vm->mem_map, - guest_physical_start, - guest_physical_end) ; - */ - return -1; +struct cons_frontend { + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_console_ops * ops, + v3_cfg_tree_t * cfg, + void * priv_data); + + + struct list_head cons_node; + + void * priv_data; +}; + +int v3_dev_add_console_frontend(struct v3_vm_info * vm, + char * name, + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_console_ops * ops, + v3_cfg_tree_t * cfg, + void * private_data), + void * priv_data) +{ + struct cons_frontend * frontend = NULL; + + frontend = (struct cons_frontend *)V3_Malloc(sizeof(struct cons_frontend)); + memset(frontend, 0, sizeof(struct cons_frontend)); + + frontend->connect = connect; + frontend->priv_data = priv_data; + + list_add(&(frontend->cons_node), &(vm->dev_mgr.cons_list)); + v3_htable_insert(vm->dev_mgr.cons_table, (addr_t)(name), (addr_t)frontend); + + return 0; } -int dev_mgr_unhook_device(struct guest_info *vm, - struct vm_device *device) +int v3_dev_connect_console(struct v3_vm_info * vm, + char * frontend_name, + struct v3_dev_console_ops * ops, + v3_cfg_tree_t * cfg, + void * private_data) { - struct vm_device_io_hook *iohook=device->io_hooks; - struct vm_device_mem_hook *memhook=device->mem_hooks; + struct cons_frontend * frontend = NULL; - while (iohook) { - if (dev_mgr_unhook_io(vm,device,iohook->guest_port)) { - return -1; + frontend = (struct cons_frontend *)v3_htable_search(vm->dev_mgr.cons_table, + (addr_t)frontend_name); + + if (frontend == NULL) { + PrintError("Could not find frontend console device %s\n", frontend_name); + return 0; + } + + if (frontend->connect(vm, frontend->priv_data, ops, cfg, private_data) == -1) { + PrintError("Error connecting to console frontend %s\n", frontend_name); + return -1; } - } - while (memhook) { - if (dev_mgr_unhook_mem(vm,device,memhook->guest_physical_start, memhook->guest_physical_end)) { - return -1; + return 0; +} + +struct char_frontend { + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_char_ops * ops, + v3_cfg_tree_t * cfg, + void * priv_data, + void ** push_fn_arg); + + + struct list_head char_node; + + void * priv_data; +}; + +int v3_dev_add_char_frontend(struct v3_vm_info * vm, + char * name, + int (*connect)(struct v3_vm_info * vm, + void * frontend_data, + struct v3_dev_char_ops * ops, + v3_cfg_tree_t * cfg, + void * private_data, + void ** push_fn_arg), + void * priv_data) +{ + struct char_frontend * frontend = NULL; + + frontend = (struct char_frontend *)V3_Malloc(sizeof(struct char_frontend)); + memset(frontend, 0, sizeof(struct char_frontend)); + + frontend->connect = connect; + frontend->priv_data = priv_data; + + list_add(&(frontend->char_node), &(vm->dev_mgr.char_list)); + v3_htable_insert(vm->dev_mgr.char_table, (addr_t)(name), (addr_t)frontend); + + return 0; +} + + +int v3_dev_connect_char(struct v3_vm_info * vm, + char * frontend_name, + struct v3_dev_char_ops * ops, + v3_cfg_tree_t * cfg, + void * private_data, + void ** push_fn_arg) +{ + struct char_frontend * frontend = NULL; + + frontend = (struct char_frontend *)v3_htable_search(vm->dev_mgr.char_table, + (addr_t)frontend_name); + + if (frontend == NULL) { + PrintError("Could not find frontend char device %s\n", frontend_name); + return 0; + } + + if (frontend->connect(vm, frontend->priv_data, ops, cfg, private_data, push_fn_arg) == -1) { + PrintError("Error connecting to char frontend %s\n", frontend_name); + return -1; } - } - return 0; + return 0; } + + +static int free_frontends(struct v3_vm_info * vm, struct vmm_dev_mgr * mgr) { + struct char_frontend * chr = NULL; + struct char_frontend * tmp_chr = NULL; + struct cons_frontend * cons = NULL; + struct cons_frontend * tmp_cons = NULL; + struct net_frontend * net = NULL; + struct net_frontend * tmp_net = NULL; + struct blk_frontend * blk = NULL; + struct blk_frontend * tmp_blk = NULL; + + + + list_for_each_entry_safe(chr, tmp_chr, &(mgr->char_list), char_node) { + list_del(&(chr->char_node)); + V3_Free(chr); + } + + list_for_each_entry_safe(cons, tmp_cons, &(mgr->cons_list), cons_node) { + list_del(&(cons->cons_node)); + V3_Free(cons); + } + + list_for_each_entry_safe(net, tmp_net, &(mgr->net_list), net_node) { + list_del(&(net->net_node)); + V3_Free(net); + } + + list_for_each_entry_safe(blk, tmp_blk, &(mgr->blk_list), blk_node) { + list_del(&(blk->blk_node)); + V3_Free(blk); + } + + v3_free_htable(mgr->blk_table, 0, 0); + v3_free_htable(mgr->net_table, 0, 0); + v3_free_htable(mgr->char_table, 0, 0); + v3_free_htable(mgr->cons_table, 0, 0); + + + return 0; +}