static void drm_vm_open(struct vm_area_struct *vma);
static void drm_vm_close(struct vm_area_struct *vma);
+static pgprot_t drm_io_prot(uint32_t map_type, struct vm_area_struct *vma)
+{
+ pgprot_t tmp = vm_get_page_prot(vma->vm_flags);
+
+#if defined(__i386__) || defined(__x86_64__)
+ if (boot_cpu_data.x86 > 3 && map_type != _DRM_AGP) {
+ pgprot_val(tmp) |= _PAGE_PCD;
+ pgprot_val(tmp) &= ~_PAGE_PWT;
+ }
+#elif defined(__powerpc__)
+ pgprot_val(tmp) |= _PAGE_NO_CACHE;
+ if (map_type == _DRM_REGISTERS)
+ pgprot_val(tmp) |= _PAGE_GUARDED;
+#endif
+#if defined(__ia64__)
+ if (efi_range_is_wc(vma->vm_start, vma->vm_end -
+ vma->vm_start))
+ tmp = pgprot_writecombine(tmp);
+ else
+ tmp = pgprot_noncached(tmp);
+#endif
+ return tmp;
+}
+
/**
* \c nopage method for AGP virtual memory.
*
static __inline__ struct page *drm_do_vm_nopage(struct vm_area_struct *vma,
unsigned long address)
{
- drm_file_t *priv = vma->vm_file->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_map_t *map = NULL;
- drm_map_list_t *r_list;
- drm_hash_item_t *hash;
+ struct drm_file *priv = vma->vm_file->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_map *map = NULL;
+ struct drm_map_list *r_list;
+ struct drm_hash_item *hash;
/*
* Find the right map
if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash))
goto vm_nopage_error;
- r_list = drm_hash_entry(hash, drm_map_list_t, hash);
+ r_list = drm_hash_entry(hash, struct drm_map_list, hash);
map = r_list->map;
if (map && map->type == _DRM_AGP) {
/*
* It's AGP memory - find the real physical page to map
*/
- for (agpmem = dev->agp->memory; agpmem; agpmem = agpmem->next) {
+ list_for_each_entry(agpmem, &dev->agp->memory, head) {
if (agpmem->bound <= baddr &&
agpmem->bound + agpmem->pages * PAGE_SIZE > baddr)
break;
* \param address access address.
* \return pointer to the page structure.
*
- * Get the the mapping, find the real physical page to map, get the page, and
+ * Get the mapping, find the real physical page to map, get the page, and
* return it.
*/
static __inline__ struct page *drm_do_vm_shm_nopage(struct vm_area_struct *vma,
unsigned long address)
{
- drm_map_t *map = (drm_map_t *) vma->vm_private_data;
+ struct drm_map *map = (struct drm_map *) vma->vm_private_data;
unsigned long offset;
unsigned long i;
struct page *page;
offset = address - vma->vm_start;
i = (unsigned long)map->handle + offset;
- page = (map->type == _DRM_CONSISTENT) ?
- virt_to_page((void *)i) : vmalloc_to_page((void *)i);
+ page = vmalloc_to_page((void *)i);
if (!page)
return NOPAGE_SIGBUS;
get_page(page);
*/
static void drm_vm_shm_close(struct vm_area_struct *vma)
{
- drm_file_t *priv = vma->vm_file->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_vma_entry_t *pt, *prev, *next;
- drm_map_t *map;
- drm_map_list_t *r_list;
- struct list_head *list;
+ struct drm_file *priv = vma->vm_file->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_vma_entry *pt, *temp;
+ struct drm_map *map;
+ struct drm_map_list *r_list;
int found_maps = 0;
DRM_DEBUG("0x%08lx,0x%08lx\n",
map = vma->vm_private_data;
mutex_lock(&dev->struct_mutex);
- for (pt = dev->vmalist, prev = NULL; pt; pt = next) {
- next = pt->next;
+ list_for_each_entry_safe(pt, temp, &dev->vmalist, head) {
if (pt->vma->vm_private_data == map)
found_maps++;
if (pt->vma == vma) {
- if (prev) {
- prev->next = pt->next;
- } else {
- dev->vmalist = pt->next;
- }
+ list_del(&pt->head);
drm_free(pt, sizeof(*pt), DRM_MEM_VMAS);
- } else {
- prev = pt;
}
}
+
/* We were the only map that was found */
if (found_maps == 1 && map->flags & _DRM_REMOVABLE) {
/* Check to see if we are in the maplist, if we are not, then
* we delete this mappings information.
*/
found_maps = 0;
- list = &dev->maplist->head;
- list_for_each(list, &dev->maplist->head) {
- r_list = list_entry(list, drm_map_list_t, head);
+ list_for_each_entry(r_list, &dev->maplist, head) {
if (r_list->map == map)
found_maps++;
}
static __inline__ struct page *drm_do_vm_dma_nopage(struct vm_area_struct *vma,
unsigned long address)
{
- drm_file_t *priv = vma->vm_file->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_device_dma_t *dma = dev->dma;
+ struct drm_file *priv = vma->vm_file->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_device_dma *dma = dev->dma;
unsigned long offset;
unsigned long page_nr;
struct page *page;
static __inline__ struct page *drm_do_vm_sg_nopage(struct vm_area_struct *vma,
unsigned long address)
{
- drm_map_t *map = (drm_map_t *) vma->vm_private_data;
- drm_file_t *priv = vma->vm_file->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_sg_mem_t *entry = dev->sg;
+ struct drm_map *map = (struct drm_map *) vma->vm_private_data;
+ struct drm_file *priv = vma->vm_file->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_sg_mem *entry = dev->sg;
unsigned long offset;
unsigned long map_offset;
unsigned long page_offset;
* Create a new drm_vma_entry structure as the \p vma private data entry and
* add it to drm_device::vmalist.
*/
-static void drm_vm_open(struct vm_area_struct *vma)
+static void drm_vm_open_locked(struct vm_area_struct *vma)
{
- drm_file_t *priv = vma->vm_file->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_vma_entry_t *vma_entry;
+ struct drm_file *priv = vma->vm_file->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_vma_entry *vma_entry;
DRM_DEBUG("0x%08lx,0x%08lx\n",
vma->vm_start, vma->vm_end - vma->vm_start);
vma_entry = drm_alloc(sizeof(*vma_entry), DRM_MEM_VMAS);
if (vma_entry) {
- mutex_lock(&dev->struct_mutex);
vma_entry->vma = vma;
- vma_entry->next = dev->vmalist;
vma_entry->pid = current->pid;
- dev->vmalist = vma_entry;
- mutex_unlock(&dev->struct_mutex);
+ list_add(&vma_entry->head, &dev->vmalist);
}
}
+static void drm_vm_open(struct vm_area_struct *vma)
+{
+ struct drm_file *priv = vma->vm_file->private_data;
+ struct drm_device *dev = priv->head->dev;
+
+ mutex_lock(&dev->struct_mutex);
+ drm_vm_open_locked(vma);
+ mutex_unlock(&dev->struct_mutex);
+}
+
/**
* \c close method for all virtual memory types.
*
*/
static void drm_vm_close(struct vm_area_struct *vma)
{
- drm_file_t *priv = vma->vm_file->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_vma_entry_t *pt, *prev;
+ struct drm_file *priv = vma->vm_file->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_vma_entry *pt, *temp;
DRM_DEBUG("0x%08lx,0x%08lx\n",
vma->vm_start, vma->vm_end - vma->vm_start);
atomic_dec(&dev->vma_count);
mutex_lock(&dev->struct_mutex);
- for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
+ list_for_each_entry_safe(pt, temp, &dev->vmalist, head) {
if (pt->vma == vma) {
- if (prev) {
- prev->next = pt->next;
- } else {
- dev->vmalist = pt->next;
- }
+ list_del(&pt->head);
drm_free(pt, sizeof(*pt), DRM_MEM_VMAS);
break;
}
/**
* mmap DMA memory.
*
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param vma virtual memory area.
* \return zero on success or a negative number on failure.
*
*/
static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev;
- drm_device_dma_t *dma;
+ struct drm_file *priv = filp->private_data;
+ struct drm_device *dev;
+ struct drm_device_dma *dma;
unsigned long length = vma->vm_end - vma->vm_start;
- lock_kernel();
dev = priv->head->dev;
dma = dev->dma;
DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
/* Length must match exact page count */
if (!dma || (length >> PAGE_SHIFT) != dma->page_count) {
- unlock_kernel();
return -EINVAL;
}
- unlock_kernel();
if (!capable(CAP_SYS_ADMIN) &&
(dma->flags & _DRM_DMA_USE_PCI_RO)) {
vma->vm_ops = &drm_vm_dma_ops;
vma->vm_flags |= VM_RESERVED; /* Don't swap */
+ vma->vm_flags |= VM_DONTEXPAND;
vma->vm_file = filp; /* Needed for drm_vm_open() */
- drm_vm_open(vma);
+ drm_vm_open_locked(vma);
return 0;
}
-unsigned long drm_core_get_map_ofs(drm_map_t * map)
+unsigned long drm_core_get_map_ofs(struct drm_map * map)
{
return map->offset;
}
/**
* mmap DMA memory.
*
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param vma virtual memory area.
* \return zero on success or a negative number on failure.
*
* according to the mapping type and remaps the pages. Finally sets the file
* pointer and calls vm_open().
*/
-int drm_mmap(struct file *filp, struct vm_area_struct *vma)
+static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_map_t *map = NULL;
+ struct drm_file *priv = filp->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_map *map = NULL;
unsigned long offset = 0;
- drm_hash_item_t *hash;
+ struct drm_hash_item *hash;
DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
vma->vm_start, vma->vm_end, vma->vm_pgoff);
return -EINVAL;
}
- map = drm_hash_entry(hash, drm_map_list_t, hash)->map;
+ map = drm_hash_entry(hash, struct drm_map_list, hash)->map;
if (!map || ((map->flags & _DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
return -EPERM;
/* Check for valid size. */
- if (map->size != vma->vm_end - vma->vm_start)
+ if (map->size < vma->vm_end - vma->vm_start)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN) && (map->flags & _DRM_READ_ONLY)) {
/* fall through to _DRM_FRAME_BUFFER... */
case _DRM_FRAME_BUFFER:
case _DRM_REGISTERS:
-#if defined(__i386__) || defined(__x86_64__)
- if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
- pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
- pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
- }
-#elif defined(__powerpc__)
- pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
- if (map->type == _DRM_REGISTERS)
- pgprot_val(vma->vm_page_prot) |= _PAGE_GUARDED;
-#endif
- vma->vm_flags |= VM_IO; /* not in core dump */
-#if defined(__ia64__)
- if (efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start))
- vma->vm_page_prot =
- pgprot_writecombine(vma->vm_page_prot);
- else
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-#endif
offset = dev->driver->get_reg_ofs(dev);
+ vma->vm_flags |= VM_IO; /* not in core dump */
+ vma->vm_page_prot = drm_io_prot(map->type, vma);
#ifdef __sparc__
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+#endif
if (io_remap_pfn_range(vma, vma->vm_start,
(map->offset + offset) >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
vma->vm_page_prot))
-#else
- if (io_remap_pfn_range(vma, vma->vm_start,
- (map->offset + offset) >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot))
-#endif
return -EAGAIN;
DRM_DEBUG(" Type = %d; start = 0x%lx, end = 0x%lx,"
" offset = 0x%lx\n",
vma->vm_start, vma->vm_end, map->offset + offset);
vma->vm_ops = &drm_vm_ops;
break;
- case _DRM_SHM:
case _DRM_CONSISTENT:
- /* Consistent memory is really like shared memory. It's only
- * allocate in a different way */
+ /* Consistent memory is really like shared memory. But
+ * it's allocated in a different way, so avoid nopage */
+ if (remap_pfn_range(vma, vma->vm_start,
+ page_to_pfn(virt_to_page(map->handle)),
+ vma->vm_end - vma->vm_start, vma->vm_page_prot))
+ return -EAGAIN;
+ /* fall through to _DRM_SHM */
+ case _DRM_SHM:
vma->vm_ops = &drm_vm_shm_ops;
vma->vm_private_data = (void *)map;
/* Don't let this area swap. Change when
return -EINVAL; /* This should never happen. */
}
vma->vm_flags |= VM_RESERVED; /* Don't swap */
+ vma->vm_flags |= VM_DONTEXPAND;
vma->vm_file = filp; /* Needed for drm_vm_open() */
- drm_vm_open(vma);
+ drm_vm_open_locked(vma);
return 0;
}
+int drm_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ struct drm_file *priv = filp->private_data;
+ struct drm_device *dev = priv->head->dev;
+ int ret;
+
+ mutex_lock(&dev->struct_mutex);
+ ret = drm_mmap_locked(filp, vma);
+ mutex_unlock(&dev->struct_mutex);
+
+ return ret;
+}
EXPORT_SYMBOL(drm_mmap);
git.samba.org / sfrench / cifs-2.6.git / blobdiff