X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_dev_mgr.c;h=e6fad6929ca673cebaa216c9968f893a2f88803c;hb=5d1bbcc86de011e3f0d115b6f10fd8645cdf855e;hp=daea57ca1279258b8e566399bca6e94d33b09052;hpb=101529b6eae500272347287df43ec51aa003d0aa;p=palacios.git diff --git a/palacios/src/palacios/vmm_dev_mgr.c b/palacios/src/palacios/vmm_dev_mgr.c index daea57c..e6fad69 100644 --- a/palacios/src/palacios/vmm_dev_mgr.c +++ b/palacios/src/palacios/vmm_dev_mgr.c @@ -1,286 +1,735 @@ -/* (c) 2008, Jack Lange */ -/* (c) 2008, The V3VEE Project */ +/* + * 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 -#ifndef NULL -#define NULL 0 +#ifndef V3_CONFIG_DEBUG_DEV_MGR +#undef PrintDebug +#define PrintDebug(fmt, args...) #endif -int dev_mgr_init(struct guest_info * info) { - struct vmm_dev_mgr * mgr = &(info->dev_mgr); - INIT_LIST_HEAD(&(mgr->dev_list)); - mgr->num_devs = 0; - INIT_LIST_HEAD(&(mgr->io_hooks)); - mgr->num_io_hooks = 0; +static struct hashtable * master_dev_table = NULL; - return 0; +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 guest_info * info) { - struct vm_device * dev; - struct vmm_dev_mgr * mgr = &(info->dev_mgr); - list_for_each_entry(dev, &(mgr->dev_list), dev_link) { - v3_unattach_device(dev); - free_device(dev); - } +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; - return 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); + } +#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); -static int dev_mgr_add_device(struct vmm_dev_mgr * mgr, struct vm_device * dev) { - list_add(&(dev->dev_link), &(mgr->dev_list)); - mgr->num_devs++; + 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; + + return 0; } -static int dev_mgr_remove_device(struct vmm_dev_mgr * mgr, struct vm_device * dev) { - list_del(&(dev->dev_link)); - mgr->num_devs--; - return 0; +int V3_deinit_devices() { + v3_free_htable(master_dev_table, 0, 0); + 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); -/* IO HOOKS */ -int dev_mgr_add_io_hook(struct vmm_dev_mgr * mgr, struct dev_io_hook * hook) { - list_add(&(hook->mgr_list), &(mgr->io_hooks)); - mgr->num_io_hooks++; - return 0; + 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; } -int dev_mgr_remove_io_hook(struct vmm_dev_mgr * mgr, struct dev_io_hook * hook) { - list_del(&(hook->mgr_list)); - mgr->num_io_hooks--; +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; - return 0; + 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; -int dev_add_io_hook(struct vm_device * dev, struct dev_io_hook * hook) { - list_add(&(hook->dev_list), &(dev->io_hooks)); - dev->num_io_hooks++; - return 0; + 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); + + + 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; + + + 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); + } + } + + + // 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); + + return 0; } -int dev_remove_io_hook(struct vm_device * dev, struct dev_io_hook * hook) { - list_del(&(hook->dev_list)); - dev->num_io_hooks--; +int v3_load_vm_devices(struct v3_vm_info * vm, struct v3_chkpt * chkpt) { + + PrintError("TODO... \n"); - return 0; + // Read devices from checkpoint data + // selectively load them + + 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 -struct dev_io_hook * dev_mgr_find_io_hook(struct vmm_dev_mgr * mgr, ushort_t port) { - struct dev_io_hook * tmp; + free_frontends(vm, mgr); + + + + v3_free_htable(mgr->dev_table, 0, 0); + + return 0; +} - list_for_each_entry(tmp, &(mgr->io_hooks), mgr_list) { - if (tmp->port == port) { - return tmp; + + +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; } - } - return NULL; + + + if (dev_init(vm, cfg) == -1) { + PrintError("Could not initialize Device %s\n", dev_name); + return -1; + } + + return 0; } -struct dev_io_hook * dev_find_io_hook(struct vm_device * dev, ushort_t port) { - struct dev_io_hook * tmp; - list_for_each_entry(tmp, &(dev->io_hooks), dev_list) { - if (tmp->port == port) { - return tmp; + + +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 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)) { -int dev_hook_io(struct vm_device *dev, - ushort_t port, - int (*read)(ushort_t port, void * dst, uint_t length, struct vm_device * dev), - int (*write)(ushort_t port, void * src, uint_t length, struct vm_device * dev)) { + list_del(&(resource->node)); + V3_Free(resource); + + return 0; + } + } - struct dev_io_hook *hook = (struct dev_io_hook *)V3_Malloc(sizeof(struct dev_io_hook)); - - if (!hook) { return -1; - } +} - if (v3_hook_io_port(dev->vm, port, - (int (*)(ushort_t, void *, uint_t, void *))read, - (int (*)(ushort_t, void *, uint_t, void *))write, - (void *)dev) == 0) { +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); - hook->dev = dev; - hook->port = port; - hook->read = read; - hook->write = write; + 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; + } - dev_mgr_add_io_hook(&(dev->vm->dev_mgr), hook); - dev_add_io_hook(dev, hook); - } else { + 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); + } 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); + } - return 0; + return -1; } -int dev_unhook_io(struct vm_device *dev, - ushort_t port) { - struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr); - struct dev_io_hook * hook = dev_mgr_find_io_hook(mgr, port); - if (!hook) { +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; - } +} + - dev_mgr_remove_io_hook(mgr, hook); - dev_remove_io_hook(dev, hook); +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; - return v3_unhook_io_port(dev->vm, port); + 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; } -int v3_attach_device(struct guest_info * vm, struct vm_device * dev) { - struct vmm_dev_mgr *mgr= &(vm->dev_mgr); - - dev->vm = vm; - dev_mgr_add_device(mgr, dev); - dev->ops->init(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 0; + return; } -int v3_unattach_device(struct vm_device * dev) { - struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr); - dev->ops->deinit(dev); - dev_mgr_remove_device(mgr, dev); - dev->vm = NULL; - return 0; + +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; + } + return 0; +} -int dev_mgr_hook_mem(struct guest_info *vm, - struct vm_device *device, - void *start, - void *end) -{ - struct dev_mem_hook * hook = (struct dev_mem_hook*)V3_Malloc(sizeof(struct dev_mem_hook)); - // V3_Malloc(struct dev_mem_hook *, hook,sizeof(struct dev_mem_hook)); - if (!hook) { - return -1; - } +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 +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; - hook->addr_start = start; - hook->addr_end = end; + 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 vm_device *dev, - addr_t start, - addr_t end) { - /* - struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr); - struct dev_mem_hook *hook = dev_mgr_find_mem_hook(mgr, start, end); - - if (!hook) { - // Very bad - unhooking something that doesn't exist! - return -1; - } - */ +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 net_frontend * frontend = NULL; - /* not implemented yet - return unhook_mem_port(vm->mem_map, - guest_physical_start, - guest_physical_end) ; + 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 (frontend->connect(vm, frontend->priv_data, ops, cfg, private_data) == -1) { + PrintError("Error connecting to net frontend %s\n", frontend_name); + return -1; + } - */ - return -1; + return 0; } +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; +} -void PrintDebugDevMgr(struct guest_info * info) { - struct vmm_dev_mgr * mgr = &(info->dev_mgr); - struct vm_device * dev; - PrintDebug("%d devices registered with manager\n", mgr->num_devs); +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 cons_frontend * frontend = NULL; - list_for_each_entry(dev, &(mgr->dev_list), dev_link) { - PrintDebugDev(dev); - PrintDebug("next..\n"); - } + 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; + } - return; + 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); -void PrintDebugDev(struct vm_device * dev) { - - PrintDebug("Device: %s\n", dev->name); - PrintDebugDevIO(dev); + return 0; } -void PrintDebugDevMgrIO(struct vmm_dev_mgr * mgr) { +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; } -void PrintDebugDevIO(struct vm_device * dev) { - struct dev_io_hook * hook; - PrintDebug("IO Hooks(%d) for Device: %s\n", dev->num_io_hooks, dev->name); - list_for_each_entry(hook, &(dev->io_hooks), dev_list) { - PrintDebug("\tPort: 0x%x (read=0x%x), (write=0x%x)\n", hook->port, hook->read, hook->write); - } +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; + return 0; }