/**
* Free AGP memory (ioctl).
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg pointer to a drm_agp_buffer structure.
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device is present and has been acquired and looks up the
* AGP memory entry. If the memory it's currently bound, unbind it via
* unbind_agp(). Frees it via free_agp() as well as the entry itself
* and unlinks from the doubly linked list it's inserted in.
*/
int drm_agp_free(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_agp_buffer_t request;
drm_agp_mem_t *entry;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
if (copy_from_user(&request, (drm_agp_buffer_t __user *)arg, sizeof(request)))
return -EFAULT;
if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
return -EINVAL;
if (entry->bound)
drm_unbind_agp(entry->memory);
if (entry->prev)
entry->prev->next = entry->next;
else
dev->agp->memory = entry->next;
if (entry->next)
entry->next->prev = entry->prev;
drm_free_agp(entry->memory, entry->pages);
drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
return 0;
}
/**
* Unbind AGP memory from the GATT (ioctl).
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg pointer to a drm_agp_binding structure.
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device is present and acquired, looks-up the AGP memory
* entry and passes it to the unbind_agp() function.
*/
int drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request)
{
drm_agp_mem_t *entry;
int ret;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
return -EINVAL;
if (!entry->bound)
return -EINVAL;
ret = drm_unbind_agp(entry->memory);
if (ret == 0)
entry->bound = 0;
return ret;
}
/**
* Unbind AGP memory from the GATT (ioctl).
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg pointer to a drm_agp_binding structure.
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device is present and acquired, looks-up the AGP memory
* entry and passes it to the unbind_agp() function.
*/
int drm_agp_unbind(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_agp_binding_t request;
drm_agp_mem_t *entry;
int ret;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
if (copy_from_user(&request, (drm_agp_binding_t __user *)arg, sizeof(request)))
return -EFAULT;
if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
return -EINVAL;
if (!entry->bound)
return -EINVAL;
ret = drm_unbind_agp(entry->memory);
if (ret == 0)
entry->bound = 0;
return ret;
}
/**
* Free AGP memory (ioctl).
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg pointer to a drm_agp_buffer structure.
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device is present and has been acquired and looks up the
* AGP memory entry. If the memory it's currently bound, unbind it via
* unbind_agp(). Frees it via free_agp() as well as the entry itself
* and unlinks from the doubly linked list it's inserted in.
*/
int drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request)
{
drm_agp_mem_t *entry;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
return -EINVAL;
if (entry->bound)
drm_unbind_agp(entry->memory);
if (entry->prev)
entry->prev->next = entry->next;
else
dev->agp->memory = entry->next;
if (entry->next)
entry->next->prev = entry->prev;
drm_free_agp(entry->memory, entry->pages);
drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
return 0;
}
static int i810_takedown(drm_device_t *dev)
{
int i;
drm_magic_entry_t *pt, *next;
drm_map_t *map;
drm_vma_entry_t *vma, *vma_next;
DRM_DEBUG("\n");
if (dev->irq) i810_irq_uninstall(dev);
down(&dev->struct_sem);
del_timer(&dev->timer);
if (dev->devname) {
drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER);
dev->devname = NULL;
}
if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique)+1, DRM_MEM_DRIVER);
dev->unique = NULL;
dev->unique_len = 0;
}
/* Clear pid list */
for (i = 0; i < DRM_HASH_SIZE; i++) {
for (pt = dev->magiclist[i].head; pt; pt = next) {
next = pt->next;
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
}
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
/* Clear AGP information */
if (dev->agp) {
drm_agp_mem_t *entry;
drm_agp_mem_t *nexte;
/* Remove AGP resources, but leave dev->agp
intact until r128_cleanup is called. */
for (entry = dev->agp->memory; entry; entry = nexte) {
nexte = entry->next;
if (entry->bound) drm_unbind_agp(entry->memory);
drm_free_agp(entry->memory, entry->pages);
drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
}
dev->agp->memory = NULL;
if (dev->agp->acquired) _drm_agp_release();
dev->agp->acquired = 0;
dev->agp->enabled = 0;
}
/* Clear vma list (only built for debugging) */
if (dev->vmalist) {
for (vma = dev->vmalist; vma; vma = vma_next) {
vma_next = vma->next;
drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
}
dev->vmalist = NULL;
}
/* Clear map area and mtrr information */
if (dev->maplist) {
for (i = 0; i < dev->map_count; i++) {
map = dev->maplist[i];
switch (map->type) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
#ifdef CONFIG_MTRR
if (map->mtrr >= 0) {
int retcode;
retcode = mtrr_del(map->mtrr,
map->offset,
map->size);
DRM_DEBUG("mtrr_del = %d\n", retcode);
}
#endif
drm_ioremapfree(map->handle, map->size);
break;
case _DRM_SHM:
drm_free_pages((unsigned long)map->handle,
drm_order(map->size)
- PAGE_SHIFT,
DRM_MEM_SAREA);
break;
case _DRM_AGP:
break;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
}
drm_free(dev->maplist,
dev->map_count * sizeof(*dev->maplist),
DRM_MEM_MAPS);
dev->maplist = NULL;
dev->map_count = 0;
}
if (dev->queuelist) {
for (i = 0; i < dev->queue_count; i++) {
drm_waitlist_destroy(&dev->queuelist[i]->waitlist);
if (dev->queuelist[i]) {
drm_free(dev->queuelist[i],
sizeof(*dev->queuelist[0]),
DRM_MEM_QUEUES);
dev->queuelist[i] = NULL;
}
}
drm_free(dev->queuelist,
dev->queue_slots * sizeof(*dev->queuelist),
DRM_MEM_QUEUES);
dev->queuelist = NULL;
}
drm_dma_takedown(dev);
dev->queue_count = 0;
if (dev->lock.hw_lock) {
dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.pid = 0;
wake_up_interruptible(&dev->lock.lock_queue);
}
up(&dev->struct_sem);
return 0;
}
/**
* Take down the DRM device.
*
* \param dev DRM device structure.
*
* Frees every resource in \p dev.
*
* \sa drm_device
*/
int drm_lastclose(drm_device_t * dev)
{
drm_magic_entry_t *pt, *next;
drm_map_list_t *r_list;
drm_vma_entry_t *vma, *vma_next;
int i;
DRM_DEBUG("\n");
if (dev->driver->lastclose)
dev->driver->lastclose(dev);
DRM_DEBUG("driver lastclose completed\n");
if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
dev->unique=NULL;
dev->unique_len=0;
}
if (dev->irq_enabled)
drm_irq_uninstall(dev);
down(&dev->struct_sem);
del_timer(&dev->timer);
if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
dev->unique = NULL;
dev->unique_len = 0;
}
/* Clear pid list */
for (i = 0; i < DRM_HASH_SIZE; i++) {
for (pt = dev->magiclist[i].head; pt; pt = next) {
next = pt->next;
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
}
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
/* Clear AGP information */
if (drm_core_has_AGP(dev) && dev->agp) {
drm_agp_mem_t *entry;
drm_agp_mem_t *nexte;
/* Remove AGP resources, but leave dev->agp
intact until drv_cleanup is called. */
for (entry = dev->agp->memory; entry; entry = nexte) {
nexte = entry->next;
if (entry->bound)
drm_unbind_agp(entry->memory);
drm_free_agp(entry->memory, entry->pages);
drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
}
dev->agp->memory = NULL;
if (dev->agp->acquired)
drm_agp_release(dev);
dev->agp->acquired = 0;
dev->agp->enabled = 0;
}
if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
drm_sg_cleanup(dev->sg);
dev->sg = NULL;
}
/* Clear vma list (only built for debugging) */
if (dev->vmalist) {
for (vma = dev->vmalist; vma; vma = vma_next) {
vma_next = vma->next;
drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
}
dev->vmalist = NULL;
}
if (dev->maplist) {
while (!list_empty(&dev->maplist->head)) {
struct list_head *list = dev->maplist->head.next;
r_list = list_entry(list, drm_map_list_t, head);
drm_rmmap_locked(dev, r_list->map);
}
}
if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
for (i = 0; i < dev->queue_count; i++) {
if (dev->queuelist[i]) {
drm_free(dev->queuelist[i],
sizeof(*dev->queuelist[0]),
DRM_MEM_QUEUES);
dev->queuelist[i] = NULL;
}
}
drm_free(dev->queuelist,
dev->queue_slots * sizeof(*dev->queuelist),
DRM_MEM_QUEUES);
dev->queuelist = NULL;
}
dev->queue_count = 0;
if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
drm_dma_takedown(dev);
if (dev->lock.hw_lock) {
dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.filp = NULL;
wake_up_interruptible(&dev->lock.lock_queue);
}
up(&dev->struct_sem);
DRM_DEBUG("lastclose completed\n");
return 0;
}