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authorDave Airlie <airlied@redhat.com>2011-02-07 12:16:14 +1000
committerDave Airlie <airlied@redhat.com>2011-02-07 12:16:14 +1000
commitff72145badb834e8051719ea66e024784d000cb4 (patch)
tree39dc5fc512e3e0836713de9defb91ea8b4033aa2 /drivers/gpu/drm/radeon/radeon_gem.c
parent1f692a14cbfbeb11f9a9c16f25c8ecb8ab50d3d5 (diff)
drm: dumb scanout create/mmap for intel/radeon (v3)
This is just an idea that might or might not be a good idea, it basically adds two ioctls to create a dumb and map a dumb buffer suitable for scanout. The handle can be passed to the KMS ioctls to create a framebuffer. It looks to me like it would be useful in the following cases: a) in development drivers - we can always provide a shadowfb fallback. b) libkms users - we can clean up libkms a lot and avoid linking to libdrm_*. c) plymouth via libkms is a lot easier. Userspace bits would be just calls + mmaps. We could probably mark these handles somehow as not being suitable for acceleartion so as top stop people who are dumber than dumb. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_gem.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_gem.c53
1 files changed, 48 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index df95eb83dac..ede5dccdf79 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -236,23 +236,31 @@ int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
return r;
}
-int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
- struct drm_file *filp)
+int radeon_mode_dumb_mmap(struct drm_file *filp,
+ struct drm_device *dev,
+ uint32_t handle, uint64_t *offset_p)
{
- struct drm_radeon_gem_mmap *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *robj;
- gobj = drm_gem_object_lookup(dev, filp, args->handle);
+ gobj = drm_gem_object_lookup(dev, filp, handle);
if (gobj == NULL) {
return -ENOENT;
}
robj = gobj->driver_private;
- args->addr_ptr = radeon_bo_mmap_offset(robj);
+ *offset_p = radeon_bo_mmap_offset(robj);
drm_gem_object_unreference_unlocked(gobj);
return 0;
}
+int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *filp)
+{
+ struct drm_radeon_gem_mmap *args = data;
+
+ return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
+}
+
int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
@@ -345,3 +353,38 @@ out:
drm_gem_object_unreference_unlocked(gobj);
return r;
}
+
+int radeon_mode_dumb_create(struct drm_file *file_priv,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ struct radeon_device *rdev = dev->dev_private;
+ struct drm_gem_object *gobj;
+ int r;
+
+ args->pitch = radeon_align_pitch(rdev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
+ args->size = args->pitch * args->height;
+ args->size = ALIGN(args->size, PAGE_SIZE);
+
+ r = radeon_gem_object_create(rdev, args->size, 0,
+ RADEON_GEM_DOMAIN_VRAM,
+ false, ttm_bo_type_device,
+ &gobj);
+ if (r)
+ return -ENOMEM;
+
+ r = drm_gem_handle_create(file_priv, gobj, &args->handle);
+ if (r) {
+ drm_gem_object_unreference_unlocked(gobj);
+ return r;
+ }
+ drm_gem_object_handle_unreference_unlocked(gobj);
+ return 0;
+}
+
+int radeon_mode_dumb_destroy(struct drm_file *file_priv,
+ struct drm_device *dev,
+ uint32_t handle)
+{
+ return drm_gem_handle_delete(file_priv, handle);
+}