+/*
+ * 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 <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
-#include <palacios/vmm_dev.h>
#include <palacios/vmm_dev_mgr.h>
#include <palacios/vm_guest.h>
#include <palacios/vmm.h>
+#include <palacios/vmm_decoder.h>
-extern struct vmm_os_hooks *os_hooks;
-#ifndef NULL
-#define NULL 0
+#ifndef 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;
+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;
- while (mgr->dev_list) {
- rc=dev_mgr_detach_device(mgr->vm,mgr->dev_list);
- if (rc) {
- // Bad bad bad
+#ifdef 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
-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;
+ 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_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 guest_info * info) {
+ struct vmm_dev_mgr * mgr = &(info->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);
+
+ 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_dev_mgr_deinit(struct guest_info * info) {
+ struct vm_device * dev;
+ struct vmm_dev_mgr * mgr = &(info->dev_mgr);
+ struct vm_device * tmp;
-
-
-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;
+ list_for_each_entry_safe(dev, tmp, &(mgr->dev_list), dev_link) {
+ v3_detach_device(dev);
+ v3_free_device(dev);
}
- break;
- case DEVICE_PASSTHROUGH:
- read=write=NULL;
- break;
- }
-
- 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;
- while (hook) {
- if (hook->guest_port==portno) {
- DELETE(device->io_hooks,hook);
- break;
+int v3_create_device(struct guest_info * info, const char * dev_name, void * cfg_data) {
+ int (*dev_init)(struct guest_info * info, 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 (!hook) {
- // Very bad - unhooking something that doesn't exist!
- return -1;
- }
- return unhook_io_port(&(vm->io_map),
- portno);
+ if (dev_init(info, cfg_data) == -1) {
+ PrintError("Could not initialize Device %s\n", dev_name);
+ return -1;
+ }
+
+ return 0;
}
+void v3_free_device(struct vm_device * dev) {
+ V3_Free(dev);
+}
-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)
-{
- 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;
- }
- break;
- case DEVICE_PASSTHROUGH:
- read=write=NULL;
- break;
- }
-
- /* not implemented yet
- hook_memory(vm->mem_map,
- guest_physical_address_start,
- guest_physical_address_end,
- read,
- write,
- device);
+struct vm_device * v3_find_dev(struct guest_info * info, const char * dev_name) {
+ struct vmm_dev_mgr * mgr = &(info->dev_mgr);
+
+ return (struct vm_device *)v3_htable_search(mgr->dev_table, (addr_t)dev_name);
+}
- */
- return -1; // remove when hook_memory works
+/****************************************************************/
+/* The remaining functions are called by the devices themselves */
+/****************************************************************/
- hook->control=control;
- hook->atype=atype;
- hook->guest_physical_start = guest_physical_address_start;
- hook->guest_physical_end = guest_physical_address_end;
+/* IO HOOKS */
+int v3_dev_hook_io(struct vm_device * dev, uint16_t port,
+ int (*read)(uint16_t port, void * dst, uint_t length, struct vm_device * dev),
+ int (*write)(uint16_t port, void * src, uint_t length, struct vm_device * dev)) {
+ return 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);
+}
-
- INSERT_FRONT(device->mem_hooks,hook);
- return 0;
-
+int v3_dev_unhook_io(struct vm_device * dev, uint16_t port) {
+ return v3_unhook_io_port(dev->vm, port);
}
-int dev_mgr_unhook_mem(struct guest_info *vm,
- struct vm_device *device,
- void *guest_physical_start,
- void *guest_physical_end)
-{
- struct vm_device_mem_hook *hook = device->mem_hooks;
- while (hook) {
- if (hook->guest_physical_start==guest_physical_start &&
- hook->guest_physical_end==guest_physical_end) {
- DELETE(device->mem_hooks,hook);
- break;
- }
- }
+int v3_detach_device(struct vm_device * dev) {
+ struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr);
+
+ dev->ops->free(dev);
+
+ list_del(&(dev->dev_link));
+ mgr->num_devs--;
+
+ dev->vm = NULL;
- if (!hook) {
- // Very bad - unhooking something that doesn't exist!
return -1;
- }
+}
+
+struct vm_device * v3_allocate_device(char * name,
+ struct v3_device_ops * ops,
+ void * private_data) {
+ struct vm_device * dev = NULL;
- /* not implemented yet
- return unhook_mem_port(vm->mem_map,
- guest_physical_start,
- guest_physical_end) ;
+ dev = (struct vm_device*)V3_Malloc(sizeof(struct vm_device));
- */
- return -1;
+ strncpy(dev->name, name, 32);
+ dev->ops = ops;
+ dev->private_data = private_data;
+
+ dev->vm = NULL;
+
+ return dev;
}
-int dev_mgr_unhook_device(struct guest_info *vm,
- struct vm_device *device)
-{
- struct vm_device_io_hook *iohook=device->io_hooks;
- struct vm_device_mem_hook *memhook=device->mem_hooks;
+int v3_attach_device(struct guest_info * vm, struct vm_device * dev ) {
+ struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
- while (iohook) {
- if (dev_mgr_unhook_io(vm,device,iohook->guest_port)) {
- return -1;
- }
- }
+ dev->vm = vm;
+
+ list_add(&(dev->dev_link), &(mgr->dev_list));
+ mgr->num_devs++;
- while (memhook) {
- if (dev_mgr_unhook_mem(vm,device,memhook->guest_physical_start, memhook->guest_physical_end)) {
- return -1;
+
+ v3_htable_insert(mgr->dev_table, (addr_t)(dev->name), (addr_t)dev);
+
+ return 0;
+}
+
+
+#ifdef CONFIG_DEBUG_DEV_MGR
+
+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);
+
+ list_for_each_entry(dev, &(mgr->dev_list), dev_link) {
+ PrintDebugDev(dev);
+ PrintDebug("next..\n");
}
- }
- return 0;
+ return;
}
+
+void PrintDebugDev(struct vm_device * dev) {
+ PrintDebug("Device: %s\n", dev->name);
+}
+
+
+
+
+#else
+void PrintDebugDevMgr(struct guest_info * info) {}
+void PrintDebugDev(struct vm_device * dev) {}
+#endif
