summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c4
-rw-r--r--drivers/gpu/drm/i915/i915_gem_gtt.c117
-rw-r--r--drivers/gpu/drm/i915/i915_gem_gtt.h12
-rw-r--r--drivers/gpu/drm/i915/intel_display.c27
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h4
5 files changed, 158 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 31978b07b6a6..538cae2ca94e 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3908,7 +3908,9 @@ i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
* (e.g. libkms for the bootup splash), we have to ensure that we
* always use map_and_fenceable for all scanout buffers.
*/
- ret = i915_gem_object_ggtt_pin(obj, view, alignment, PIN_MAPPABLE);
+ ret = i915_gem_object_ggtt_pin(obj, view, alignment,
+ view->type == I915_GGTT_VIEW_NORMAL ?
+ PIN_MAPPABLE : 0);
if (ret)
goto err_unpin_display;
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 645c3636c571..fc56c112a7de 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2500,15 +2500,119 @@ i915_gem_obj_lookup_or_create_ggtt_vma(struct drm_i915_gem_object *obj,
}
+static void
+rotate_pages(dma_addr_t *in, unsigned int width, unsigned int height,
+ struct sg_table *st)
+{
+ unsigned int column, row;
+ unsigned int src_idx;
+ struct scatterlist *sg = st->sgl;
+
+ st->nents = 0;
+
+ for (column = 0; column < width; column++) {
+ src_idx = width * (height - 1) + column;
+ for (row = 0; row < height; row++) {
+ st->nents++;
+ /* We don't need the pages, but need to initialize
+ * the entries so the sg list can be happily traversed.
+ * The only thing we need are DMA addresses.
+ */
+ sg_set_page(sg, NULL, PAGE_SIZE, 0);
+ sg_dma_address(sg) = in[src_idx];
+ sg_dma_len(sg) = PAGE_SIZE;
+ sg = sg_next(sg);
+ src_idx -= width;
+ }
+ }
+}
+
+static struct sg_table *
+intel_rotate_fb_obj_pages(struct i915_ggtt_view *ggtt_view,
+ struct drm_i915_gem_object *obj)
+{
+ struct drm_device *dev = obj->base.dev;
+ struct intel_rotation_info *rot_info = &ggtt_view->rotation_info;
+ unsigned long size, pages, rot_pages;
+ struct sg_page_iter sg_iter;
+ unsigned long i;
+ dma_addr_t *page_addr_list;
+ struct sg_table *st;
+ unsigned int tile_pitch, tile_height;
+ unsigned int width_pages, height_pages;
+ int ret = ENOMEM;
+
+ pages = obj->base.size / PAGE_SIZE;
+
+ /* Calculate tiling geometry. */
+ tile_height = intel_tile_height(dev, rot_info->pixel_format,
+ rot_info->fb_modifier);
+ tile_pitch = PAGE_SIZE / tile_height;
+ width_pages = DIV_ROUND_UP(rot_info->pitch, tile_pitch);
+ height_pages = DIV_ROUND_UP(rot_info->height, tile_height);
+ rot_pages = width_pages * height_pages;
+ size = rot_pages * PAGE_SIZE;
+
+ /* Allocate a temporary list of source pages for random access. */
+ page_addr_list = drm_malloc_ab(pages, sizeof(dma_addr_t));
+ if (!page_addr_list)
+ return ERR_PTR(ret);
+
+ /* Allocate target SG list. */
+ st = kmalloc(sizeof(*st), GFP_KERNEL);
+ if (!st)
+ goto err_st_alloc;
+
+ ret = sg_alloc_table(st, rot_pages, GFP_KERNEL);
+ if (ret)
+ goto err_sg_alloc;
+
+ /* Populate source page list from the object. */
+ i = 0;
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) {
+ page_addr_list[i] = sg_page_iter_dma_address(&sg_iter);
+ i++;
+ }
+
+ /* Rotate the pages. */
+ rotate_pages(page_addr_list, width_pages, height_pages, st);
+
+ DRM_DEBUG_KMS(
+ "Created rotated page mapping for object size %lu (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %lu pages).\n",
+ size, rot_info->pitch, rot_info->height,
+ rot_info->pixel_format, width_pages, height_pages,
+ rot_pages);
+
+ drm_free_large(page_addr_list);
+
+ return st;
+
+err_sg_alloc:
+ kfree(st);
+err_st_alloc:
+ drm_free_large(page_addr_list);
+
+ DRM_DEBUG_KMS(
+ "Failed to create rotated mapping for object size %lu! (%d) (pitch=%u, height=%u, pixel_format=0x%x, %ux%u tiles, %lu pages)\n",
+ size, ret, rot_info->pitch, rot_info->height,
+ rot_info->pixel_format, width_pages, height_pages,
+ rot_pages);
+ return ERR_PTR(ret);
+}
-static inline
-int i915_get_ggtt_vma_pages(struct i915_vma *vma)
+static inline int
+i915_get_ggtt_vma_pages(struct i915_vma *vma)
{
+ int ret = 0;
+
if (vma->ggtt_view.pages)
return 0;
if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL)
vma->ggtt_view.pages = vma->obj->pages;
+ else if (vma->ggtt_view.type == I915_GGTT_VIEW_ROTATED)
+ vma->ggtt_view.pages =
+ intel_rotate_fb_obj_pages(&vma->ggtt_view, vma->obj);
else
WARN_ONCE(1, "GGTT view %u not implemented!\n",
vma->ggtt_view.type);
@@ -2516,10 +2620,15 @@ int i915_get_ggtt_vma_pages(struct i915_vma *vma)
if (!vma->ggtt_view.pages) {
DRM_ERROR("Failed to get pages for GGTT view type %u!\n",
vma->ggtt_view.type);
- return -EINVAL;
+ ret = -EINVAL;
+ } else if (IS_ERR(vma->ggtt_view.pages)) {
+ ret = PTR_ERR(vma->ggtt_view.pages);
+ vma->ggtt_view.pages = NULL;
+ DRM_ERROR("Failed to get pages for VMA view type %u (%d)!\n",
+ vma->ggtt_view.type, ret);
}
- return 0;
+ return ret;
}
/**
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 75e29f738a1b..0dad42634fd5 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -117,12 +117,24 @@ typedef uint64_t gen8_pde_t;
enum i915_ggtt_view_type {
I915_GGTT_VIEW_NORMAL = 0,
+ I915_GGTT_VIEW_ROTATED
+};
+
+struct intel_rotation_info {
+ unsigned int height;
+ unsigned int pitch;
+ uint32_t pixel_format;
+ uint64_t fb_modifier;
};
struct i915_ggtt_view {
enum i915_ggtt_view_type type;
struct sg_table *pages;
+
+ union {
+ struct intel_rotation_info rotation_info;
+ };
};
extern const struct i915_ggtt_view i915_ggtt_view_normal;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d3fa09bd3e07..f605b091550f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2233,7 +2233,7 @@ static bool need_vtd_wa(struct drm_device *dev)
return false;
}
-static unsigned int
+unsigned int
intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
uint64_t fb_format_modifier)
{
@@ -2292,8 +2292,33 @@ static int
intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
const struct drm_plane_state *plane_state)
{
+ struct intel_rotation_info *info = &view->rotation_info;
+ static const struct i915_ggtt_view rotated_view =
+ { .type = I915_GGTT_VIEW_ROTATED };
+
*view = i915_ggtt_view_normal;
+ if (!plane_state)
+ return 0;
+
+ if (!(plane_state->rotation &
+ (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))))
+ return 0;
+
+ *view = rotated_view;
+
+ info->height = fb->height;
+ info->pixel_format = fb->pixel_format;
+ info->pitch = fb->pitches[0];
+ info->fb_modifier = fb->modifier[0];
+
+ if (!(info->fb_modifier == I915_FORMAT_MOD_Y_TILED ||
+ info->fb_modifier == I915_FORMAT_MOD_Yf_TILED)) {
+ DRM_DEBUG_KMS(
+ "Y or Yf tiling is needed for 90/270 rotation!\n");
+ return -EINVAL;
+ }
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index a0df556ad895..cb00bd09a1c3 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -984,6 +984,10 @@ int intel_plane_atomic_set_property(struct drm_plane *plane,
struct drm_property *property,
uint64_t val);
+unsigned int
+intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
+ uint64_t fb_format_modifier);
+
/* shared dpll functions */
struct intel_shared_dpll *intel_crtc_to_shared_dpll(struct intel_crtc *crtc);
void assert_shared_dpll(struct drm_i915_private *dev_priv,