drm/nouveau: add dumb ioctl support

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index ddbabefb4273ffa0fe071d49422dd448d21875d9..b12fd2c80812d002e0840787e8ff47481a3691a2 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -369,3 +369,48 @@ nouveau_finish_page_flip(struct nouveau_channel *chan,
        spin_unlock_irqrestore(&dev->event_lock, flags);
        return 0;
 }
+
+int
+nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
+                           struct drm_mode_create_dumb *args)
+{
+       struct nouveau_bo *bo;
+       int ret;
+
+       args->pitch = roundup(args->width * (args->bpp / 8), 256);
+       args->size = args->pitch * args->height;
+       args->size = roundup(args->size, PAGE_SIZE);
+
+       ret = nouveau_gem_new(dev, args->size, 0, TTM_PL_FLAG_VRAM, 0, 0, &bo);
+       if (ret)
+               return ret;
+
+       ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
+       drm_gem_object_unreference_unlocked(bo->gem);
+       return ret;
+}
+
+int
+nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
+                            uint32_t handle)
+{
+       return drm_gem_handle_delete(file_priv, handle);
+}
+
+int
+nouveau_display_dumb_map_offset(struct drm_file *file_priv,
+                               struct drm_device *dev,
+                               uint32_t handle, uint64_t *poffset)
+{
+       struct drm_gem_object *gem;
+
+       gem = drm_gem_object_lookup(dev, file_priv, handle);
+       if (gem) {
+               struct nouveau_bo *bo = gem->driver_private;
+               *poffset = bo->bo.addr_space_offset;
+               drm_gem_object_unreference_unlocked(gem);
+               return 0;
+       }
+
+       return -ENOENT;
+}

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index 9f7bb12952623b51bed52e21148ec04dcca902af..9791d13c9e3b8d9d223bd5bb1cae182de4bc89ee 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -433,6 +433,10 @@ static struct drm_driver driver = {
        .gem_open_object = nouveau_gem_object_open,
        .gem_close_object = nouveau_gem_object_close,
 
+       .dumb_create = nouveau_display_dumb_create,
+       .dumb_map_offset = nouveau_display_dumb_map_offset,
+       .dumb_destroy = nouveau_display_dumb_destroy,
+
        .name = DRIVER_NAME,
        .desc = DRIVER_DESC,
 #ifdef GIT_REVISION

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 29837da1098b3a85a50bbc9ee4ccc2b0a4901dab..4c0be3a4ed882f5430ea628ba4d80fef1f1d3690 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -1418,6 +1418,12 @@ int nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
                           struct drm_pending_vblank_event *event);
 int nouveau_finish_page_flip(struct nouveau_channel *,
                             struct nouveau_page_flip_state *);
+int nouveau_display_dumb_create(struct drm_file *, struct drm_device *,
+                               struct drm_mode_create_dumb *args);
+int nouveau_display_dumb_map_offset(struct drm_file *, struct drm_device *,
+                                   uint32_t handle, uint64_t *offset);
+int nouveau_display_dumb_destroy(struct drm_file *, struct drm_device *,
+                                uint32_t handle);
 
 /* nv10_gpio.c */
 int nv10_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag);