-
-#include <palacios/vmm_dev.h>
+#include <palacios/vm_dev.h>
#include <palacios/vmm_dev_mgr.h>
#include <palacios/vm_guest.h>
#include <palacios/vmm.h>
+
extern struct vmm_os_hooks *os_hooks;
#ifndef NULL
#define NULL 0
#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;
+int dev_mgr_init(struct vmm_dev_mgr * mgr) {
+ mgr->dev_list.head = NULL;
+ mgr->dev_list.num_devs = 0;
return 0;
}
-int dev_mgr_deinit(struct vmm_dev_mgr *mgr)
+int dev_mgr_deinit(struct vmm_dev_mgr * mgr)
{
- int rc;
+ struct vm_device * dev = mgr->dev_list.head;
- while (mgr->dev_list) {
- rc=dev_mgr_detach_device(mgr->vm,mgr->dev_list);
- if (rc) {
- // Bad bad bad
- }
+ while (dev) {
+ unattach_device(dev);
+ free_device(dev);
+ dev = dev->next;
}
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;
+
+
+
+int dev_mgr_add_device(struct vmm_dev_mgr * mgr, struct vm_device * dev) {
+ dev->next = mgr->dev_list.head;
+ dev->prev = 0;
+ if (dev->next) {
+ dev->next->prev = dev;
}
+ mgr->dev_list.head = dev;
+
+ mgr->dev_list.num_devs++;
+
+ return 0;
+}
- device->next = mgr->dev_list;
- device->prev = 0;
- if (device->next) {
- device->next->prev = device;
+int dev_mgr_remove_device(struct vmm_dev_mgr * mgr, struct vm_device * dev) {
+ if (mgr->dev_list.head == dev) {
+ mgr->dev_list.head = dev->next;
+ } else {
+ dev->prev->next = dev->next;
+ }
+ if (dev->next) {
+ dev->next->prev = dev->prev;
}
- mgr->dev_list = device;
- device->vm=vm;
+ mgr->dev_list.num_devs--;
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;
+
+int dev_mgr_add_io_hook(struct vmm_dev_mgr * mgr, struct dev_io_hook * hook) {
+ hook->mgr_next = mgr->io_hooks.head;
+ hook->mgr_prev = NULL;
+ if (hook->mgr_next) {
+ hook->mgr_next->mgr_prev = hook;
+ }
+ mgr->io_hooks.head = hook;
+
+ mgr->io_hooks.num_hooks++;
+
+ return 0;
+}
+
+
+int dev_mgr_remove_io_hook(struct vmm_dev_mgr * mgr, struct dev_io_hook * hook) {
+ if (mgr->io_hooks.head == hook) {
+ mgr->io_hooks.head = hook->mgr_next;
} else {
- device->prev->next = device->next;
+ hook->mgr_prev->mgr_next = hook->mgr_next;
}
- if (device->next) {
- device->next->prev=device->prev;
+
+ if (hook->mgr_next) {
+ hook->mgr_next->mgr_prev = hook->mgr_prev;
}
- // avoid interrupts here
-
- device->deinit_device(device);
+ mgr->io_hooks.num_hooks--;
- device->vm=NULL;
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 dev_add_io_hook(struct vm_device * dev, struct dev_io_hook * hook) {
+ hook->dev_next = dev->io_hooks.head;
+ hook->dev_prev = NULL;
+ if (hook->dev_next) {
+ hook->dev_next->dev_prev = hook;
+ }
+ dev->io_hooks.head = hook;
-
+ dev->io_hooks.num_hooks++;
-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;
+ return 0;
+}
+
+
+int dev_remove_io_hook(struct vm_device * dev, struct dev_io_hook * hook) {
+ if (dev->io_hooks.head == hook) {
+ dev->io_hooks.head = hook->dev_next;
+ } else {
+ hook->dev_prev->dev_next = hook->dev_next;
}
- int (*read)(ushort_t, void *, uint_t, void *) = NULL;
- int (*write)(ushort_t, void *, uint_t, void *) = NULL;
+ if (hook->dev_next) {
+ hook->dev_next->dev_prev = hook->dev_prev;
+ }
+
+ dev->io_hooks.num_hooks--;
- 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);
+ return 0;
+}
+
+
+struct dev_io_hook * dev_mgr_find_io_hook(struct vmm_dev_mgr * mgr, ushort_t port) {
+ struct dev_io_hook * tmp = mgr->io_hooks.head;
+
+ while (tmp) {
+ if (tmp->port == 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);
+ }
+ tmp = tmp->mgr_next;
+ }
+
+ return tmp;
+}
+
+struct dev_io_hook * dev_find_io_hook(struct vm_device * dev, ushort_t port) {
+ struct dev_io_hook * tmp = dev->io_hooks.head;
+
+ while (tmp) {
+ if (tmp->port == port) {
break;
}
- break;
- case DEVICE_PASSTHROUGH:
- read=write=NULL;
- break;
+ tmp = tmp->dev_next;
}
-
- 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 tmp;
+}
+
+
+
+
+int 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);
+
return 0;
}
+int unattach_device(struct vm_device * dev) {
+ struct vmm_dev_mgr * mgr = &(dev->vm->dev_mgr);
-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;
+ dev->ops->deinit(dev);
+ dev_mgr_remove_device(mgr, dev);
+ dev->vm = NULL;
- while (hook) {
- if (hook->guest_port==portno) {
- DELETE(device->io_hooks,hook);
- break;
- }
+ return 0;
+}
+
+
+
+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)) {
+
+ struct dev_io_hook *hook = os_hooks->malloc(sizeof(struct dev_io_hook));
+
+ if (!hook) {
+ return -1;
+ }
+
+
+ if (hook_io_port(&(dev->vm->io_map), port,
+ (int (*)(ushort_t, void *, uint_t, void *))read,
+ (int (*)(ushort_t, void *, uint_t, void *))write,
+ (void *)dev) == 0) {
+
+ hook->dev = dev;
+ hook->port = port;
+ hook->read = read;
+ hook->write = write;
+
+ dev_mgr_add_io_hook(&(dev->vm->dev_mgr), hook);
+ dev_add_io_hook(dev, hook);
+ } else {
+ return -1;
}
+ return 0;
+}
+
+
+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) {
- // Very bad - unhooking something that doesn't exist!
return -1;
}
- return unhook_io_port(&(vm->io_map),
- portno);
+ dev_mgr_remove_io_hook(mgr, hook);
+ dev_remove_io_hook(dev, hook);
+
+ return unhook_io_port(&(dev->vm->io_map), 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)
+ void *start,
+ void *end)
{
- struct vm_device_mem_hook *hook = os_hooks->malloc(sizeof(struct vm_device_mem_hook));
+ struct dev_mem_hook *hook = os_hooks->malloc(sizeof(struct dev_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
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;
-
- INSERT_FRONT(device->mem_hooks,hook);
+ hook->addr_start = start;
+ hook->addr_end = end;
return 0;
int dev_mgr_unhook_mem(struct guest_info *vm,
struct vm_device *device,
- void *guest_physical_start,
- void *guest_physical_end)
+ void *start,
+ void *end)
{
- struct vm_device_mem_hook *hook = device->mem_hooks;
+ struct dev_mem_hook *hook = device->mem_hooks.head;
while (hook) {
- if (hook->guest_physical_start==guest_physical_start &&
- hook->guest_physical_end==guest_physical_end) {
- DELETE(device->mem_hooks,hook);
+ if (((hook->addr_start) == start) && (hook->addr_end == end)) {
break;
}
}
}
-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;
- while (iohook) {
- if (dev_mgr_unhook_io(vm,device,iohook->guest_port)) {
- return -1;
- }
- }
- while (memhook) {
- if (dev_mgr_unhook_mem(vm,device,memhook->guest_physical_start, memhook->guest_physical_end)) {
- return -1;
- }
+void PrintDebugDevMgr(struct vmm_dev_mgr * mgr) {
+ struct vm_device * dev = mgr->dev_list.head;
+
+ while (dev) {
+ PrintDebugDev(dev);
+ dev = dev->next;
}
- return 0;
+ return;
+}
+
+
+void PrintDebugDev(struct vm_device * dev) {
+
+ PrintDebug("Device: %s\n", dev->name);
+ PrintDebugDevIO(dev);
+}
+
+void PrintDebugDevMgrIO(struct vmm_dev_mgr * mgr) {
+
}
+void PrintDebugDevIO(struct vm_device * dev) {
+ struct dev_io_hook * hook = dev->io_hooks.head;
+
+ PrintDebug("IO Hooks (%d) for Device: %s\n", dev->io_hooks.num_hooks, dev->name);
+
+ while (hook) {
+ PrintDebug("\tPort: 0x%x (read=0x%x), (write=0x%x)\n", hook->port, hook->read, hook->write);
+ hook = hook->dev_next;
+ }
+
+ return;
+}
