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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-02-02 16:55:46 +1100
committerDave Airlie <airlied@redhat.com>2009-03-13 14:23:56 +1000
commitf77d390c9779c496aa5b99ec832996fb76bb1d13 (patch)
tree3e3cccc4ac9416457a944d13b31ef942432717f2 /drivers
parentd883f7f1b75c8dcafa891f7b9e69c5a2f0ff6d66 (diff)
drm: Split drm_map and drm_local_map
Once upon a time, the DRM made the distinction between the drm_map data structure exchanged with user space and the drm_local_map used in the kernel. For some reasons, while the BSD port still has that "feature", the linux part abused drm_map for kernel internal usage as the local map only existed as a typedef of the struct drm_map. This patch fixes it by declaring struct drm_local_map separately (though its content is currently identical to the userspace variant), and changing the kernel code to only use that, except when it's a user<->kernel interface (ie. ioctl). This allows subsequent changes to the in-kernel format I've also replaced the use of drm_local_map_t with struct drm_local_map in a couple of places. Mostly by accident but they are the same (the former is a typedef of the later) and I have some remote plans and half finished patch to completely kill the drm_local_map_t typedef so I left those bits in. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/drm_bufs.c46
-rw-r--r--drivers/gpu/drm/drm_context.c4
-rw-r--r--drivers/gpu/drm/drm_drv.c2
-rw-r--r--drivers/gpu/drm/drm_gem.c2
-rw-r--r--drivers/gpu/drm/drm_memory.c6
-rw-r--r--drivers/gpu/drm/drm_proc.c2
-rw-r--r--drivers/gpu/drm/drm_vm.c12
-rw-r--r--drivers/gpu/drm/i810/i810_drv.h4
-rw-r--r--drivers/gpu/drm/i830/i830_drv.h4
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c2
10 files changed, 45 insertions, 39 deletions
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index fab899eec05..1b8dbd5961b 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -50,7 +50,7 @@ resource_size_t drm_get_resource_len(struct drm_device *dev, unsigned int resour
EXPORT_SYMBOL(drm_get_resource_len);
static struct drm_map_list *drm_find_matching_map(struct drm_device *dev,
- drm_local_map_t *map)
+ struct drm_local_map *map)
{
struct drm_map_list *entry;
list_for_each_entry(entry, &dev->maplist, head) {
@@ -89,13 +89,8 @@ static int drm_map_handle(struct drm_device *dev, struct drm_hash_item *hash,
}
/**
- * Ioctl to specify a range of memory that is available for mapping by a non-root process.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg pointer to a drm_map structure.
- * \return zero on success or a negative value on error.
+ * Core function to create a range of memory available for mapping by a
+ * non-root process.
*
* Adjusts the memory offset to its absolute value according to the mapping
* type. Adds the map to the map list drm_device::maplist. Adds MTRR's where
@@ -106,7 +101,7 @@ static int drm_addmap_core(struct drm_device * dev, unsigned int offset,
enum drm_map_flags flags,
struct drm_map_list ** maplist)
{
- struct drm_map *map;
+ struct drm_local_map *map;
struct drm_map_list *list;
drm_dma_handle_t *dmah;
unsigned long user_token;
@@ -329,7 +324,7 @@ static int drm_addmap_core(struct drm_device * dev, unsigned int offset,
int drm_addmap(struct drm_device * dev, unsigned int offset,
unsigned int size, enum drm_map_type type,
- enum drm_map_flags flags, drm_local_map_t ** map_ptr)
+ enum drm_map_flags flags, struct drm_local_map ** map_ptr)
{
struct drm_map_list *list;
int rc;
@@ -342,6 +337,17 @@ int drm_addmap(struct drm_device * dev, unsigned int offset,
EXPORT_SYMBOL(drm_addmap);
+/**
+ * Ioctl to specify a range of memory that is available for mapping by a
+ * non-root process.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private.
+ * \param cmd command.
+ * \param arg pointer to a drm_map structure.
+ * \return zero on success or a negative value on error.
+ *
+ */
int drm_addmap_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
@@ -367,19 +373,13 @@ int drm_addmap_ioctl(struct drm_device *dev, void *data,
* Remove a map private from list and deallocate resources if the mapping
* isn't in use.
*
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg pointer to a struct drm_map structure.
- * \return zero on success or a negative value on error.
- *
* Searches the map on drm_device::maplist, removes it from the list, see if
* its being used, and free any associate resource (such as MTRR's) if it's not
* being on use.
*
* \sa drm_addmap
*/
-int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map)
+int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map)
{
struct drm_map_list *r_list = NULL, *list_t;
drm_dma_handle_t dmah;
@@ -442,7 +442,7 @@ int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map)
}
EXPORT_SYMBOL(drm_rmmap_locked);
-int drm_rmmap(struct drm_device *dev, drm_local_map_t *map)
+int drm_rmmap(struct drm_device *dev, struct drm_local_map *map)
{
int ret;
@@ -462,12 +462,18 @@ EXPORT_SYMBOL(drm_rmmap);
* One use case might be after addmap is allowed for normal users for SHM and
* gets used by drivers that the server doesn't need to care about. This seems
* unlikely.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private.
+ * \param cmd command.
+ * \param arg pointer to a struct drm_map structure.
+ * \return zero on success or a negative value on error.
*/
int drm_rmmap_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_map *request = data;
- drm_local_map_t *map = NULL;
+ struct drm_local_map *map = NULL;
struct drm_map_list *r_list;
int ret;
@@ -1534,7 +1540,7 @@ int drm_mapbufs(struct drm_device *dev, void *data,
&& (dma->flags & _DRM_DMA_USE_SG))
|| (drm_core_check_feature(dev, DRIVER_FB_DMA)
&& (dma->flags & _DRM_DMA_USE_FB))) {
- struct drm_map *map = dev->agp_buffer_map;
+ struct drm_local_map *map = dev->agp_buffer_map;
unsigned long token = dev->agp_buffer_token;
if (!map) {
diff --git a/drivers/gpu/drm/drm_context.c b/drivers/gpu/drm/drm_context.c
index 809ec0f0345..7d1e53c10d4 100644
--- a/drivers/gpu/drm/drm_context.c
+++ b/drivers/gpu/drm/drm_context.c
@@ -143,7 +143,7 @@ int drm_getsareactx(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_ctx_priv_map *request = data;
- struct drm_map *map;
+ struct drm_local_map *map;
struct drm_map_list *_entry;
mutex_lock(&dev->struct_mutex);
@@ -186,7 +186,7 @@ int drm_setsareactx(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_ctx_priv_map *request = data;
- struct drm_map *map = NULL;
+ struct drm_local_map *map = NULL;
struct drm_map_list *r_list = NULL;
mutex_lock(&dev->struct_mutex);
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 14c7a23dc15..6394c2b6765 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -530,7 +530,7 @@ int drm_ioctl(struct inode *inode, struct file *filp,
EXPORT_SYMBOL(drm_ioctl);
-drm_local_map_t *drm_getsarea(struct drm_device *dev)
+struct drm_local_map *drm_getsarea(struct drm_device *dev)
{
struct drm_map_list *entry;
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 88d3368ffdd..c1173d8c458 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -502,7 +502,7 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
struct drm_file *priv = filp->private_data;
struct drm_device *dev = priv->minor->dev;
struct drm_gem_mm *mm = dev->mm_private;
- struct drm_map *map = NULL;
+ struct drm_local_map *map = NULL;
struct drm_gem_object *obj;
struct drm_hash_item *hash;
unsigned long prot;
diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c
index bcc869bc409..0c707f533ea 100644
--- a/drivers/gpu/drm/drm_memory.c
+++ b/drivers/gpu/drm/drm_memory.c
@@ -159,7 +159,7 @@ static inline void *agp_remap(unsigned long offset, unsigned long size,
#endif /* debug_memory */
-void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
+void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
{
if (drm_core_has_AGP(dev) &&
dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
@@ -169,7 +169,7 @@ void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
}
EXPORT_SYMBOL(drm_core_ioremap);
-void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev)
+void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev)
{
if (drm_core_has_AGP(dev) &&
dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
@@ -179,7 +179,7 @@ void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev)
}
EXPORT_SYMBOL(drm_core_ioremap_wc);
-void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev)
+void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev)
{
if (!map->handle || !map->size)
return;
diff --git a/drivers/gpu/drm/drm_proc.c b/drivers/gpu/drm/drm_proc.c
index 8df849f6683..c1959badf11 100644
--- a/drivers/gpu/drm/drm_proc.c
+++ b/drivers/gpu/drm/drm_proc.c
@@ -247,7 +247,7 @@ static int drm__vm_info(char *buf, char **start, off_t offset, int request,
struct drm_minor *minor = (struct drm_minor *) data;
struct drm_device *dev = minor->dev;
int len = 0;
- struct drm_map *map;
+ struct drm_local_map *map;
struct drm_map_list *r_list;
/* Hardcoded from _DRM_FRAME_BUFFER,
diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index 3ffae021d28..0d8bbd72ec5 100644
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -91,7 +91,7 @@ static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct drm_file *priv = vma->vm_file->private_data;
struct drm_device *dev = priv->minor->dev;
- struct drm_map *map = NULL;
+ struct drm_local_map *map = NULL;
struct drm_map_list *r_list;
struct drm_hash_item *hash;
@@ -176,7 +176,7 @@ static int drm_do_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
*/
static int drm_do_vm_shm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
- struct drm_map *map = (struct drm_map *) vma->vm_private_data;
+ struct drm_local_map *map = vma->vm_private_data;
unsigned long offset;
unsigned long i;
struct page *page;
@@ -209,7 +209,7 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
struct drm_file *priv = vma->vm_file->private_data;
struct drm_device *dev = priv->minor->dev;
struct drm_vma_entry *pt, *temp;
- struct drm_map *map;
+ struct drm_local_map *map;
struct drm_map_list *r_list;
int found_maps = 0;
@@ -322,7 +322,7 @@ static int drm_do_vm_dma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
*/
static int drm_do_vm_sg_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
- struct drm_map *map = (struct drm_map *) vma->vm_private_data;
+ struct drm_local_map *map = vma->vm_private_data;
struct drm_file *priv = vma->vm_file->private_data;
struct drm_device *dev = priv->minor->dev;
struct drm_sg_mem *entry = dev->sg;
@@ -512,7 +512,7 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
return 0;
}
-unsigned long drm_core_get_map_ofs(struct drm_map * map)
+unsigned long drm_core_get_map_ofs(struct drm_local_map * map)
{
return map->offset;
}
@@ -547,7 +547,7 @@ int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
{
struct drm_file *priv = filp->private_data;
struct drm_device *dev = priv->minor->dev;
- struct drm_map *map = NULL;
+ struct drm_local_map *map = NULL;
unsigned long offset = 0;
struct drm_hash_item *hash;
diff --git a/drivers/gpu/drm/i810/i810_drv.h b/drivers/gpu/drm/i810/i810_drv.h
index 0118849a567..21e2691f28f 100644
--- a/drivers/gpu/drm/i810/i810_drv.h
+++ b/drivers/gpu/drm/i810/i810_drv.h
@@ -77,8 +77,8 @@ typedef struct _drm_i810_ring_buffer {
} drm_i810_ring_buffer_t;
typedef struct drm_i810_private {
- struct drm_map *sarea_map;
- struct drm_map *mmio_map;
+ struct drm_local_map *sarea_map;
+ struct drm_local_map *mmio_map;
drm_i810_sarea_t *sarea_priv;
drm_i810_ring_buffer_t ring;
diff --git a/drivers/gpu/drm/i830/i830_drv.h b/drivers/gpu/drm/i830/i830_drv.h
index b5bf8cc0fda..da82afe4ded 100644
--- a/drivers/gpu/drm/i830/i830_drv.h
+++ b/drivers/gpu/drm/i830/i830_drv.h
@@ -84,8 +84,8 @@ typedef struct _drm_i830_ring_buffer {
} drm_i830_ring_buffer_t;
typedef struct drm_i830_private {
- struct drm_map *sarea_map;
- struct drm_map *mmio_map;
+ struct drm_local_map *sarea_map;
+ struct drm_local_map *mmio_map;
drm_i830_sarea_t *sarea_priv;
drm_i830_ring_buffer_t ring;
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 37427e4016c..592b24efeb4 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -627,7 +627,7 @@ i915_gem_create_mmap_offset(struct drm_gem_object *obj)
struct drm_gem_mm *mm = dev->mm_private;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
struct drm_map_list *list;
- struct drm_map *map;
+ struct drm_local_map *map;
int ret = 0;
/* Set the object up for mmap'ing */