@@ -1906,18 +1906,29 @@ void intel_unpin_fb_obj(struct drm_i915_gem_object *obj)
/* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
* is assumed to be a power-of-two. */
-unsigned long intel_gen4_compute_offset_xtiled(int *x, int *y,
- unsigned int bpp,
- unsigned int pitch)
+unsigned long intel_gen4_compute_page_offset(int *x, int *y,
+ unsigned int tiling_mode,
+ unsigned int cpp,
+ unsigned int pitch)
{
- int tile_rows, tiles;
+ if (tiling_mode != I915_TILING_NONE) {
+ unsigned int tile_rows, tiles;
- tile_rows = *y / 8;
- *y %= 8;
- tiles = *x / (512/bpp);
- *x %= 512/bpp;
+ tile_rows = *y / 8;
+ *y %= 8;
- return tile_rows * pitch * 8 + tiles * 4096;
+ tiles = *x / (512/cpp);
+ *x %= 512/cpp;
+
+ return tile_rows * pitch * 8 + tiles * 4096;
+ } else {
+ unsigned int offset;
+
+ offset = *y * pitch + *x * cpp;
+ *y = 0;
+ *x = (offset & 4095) / cpp;
+ return offset & -4096;
+ }
}
static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
@@ -1993,9 +2004,9 @@ static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
if (INTEL_INFO(dev)->gen >= 4) {
intel_crtc->dspaddr_offset =
- intel_gen4_compute_offset_xtiled(&x, &y,
- fb->bits_per_pixel / 8,
- fb->pitches[0]);
+ intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
+ fb->bits_per_pixel / 8,
+ fb->pitches[0]);
linear_offset -= intel_crtc->dspaddr_offset;
} else {
intel_crtc->dspaddr_offset = linear_offset;
@@ -2085,9 +2096,9 @@ static int ironlake_update_plane(struct drm_crtc *crtc,
linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
intel_crtc->dspaddr_offset =
- intel_gen4_compute_offset_xtiled(&x, &y,
- fb->bits_per_pixel / 8,
- fb->pitches[0]);
+ intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
+ fb->bits_per_pixel / 8,
+ fb->pitches[0]);
linear_offset -= intel_crtc->dspaddr_offset;
DRM_DEBUG_KMS("Writing base %08X %08lX %d %d %d\n",
@@ -671,9 +671,10 @@ extern void intel_update_sprite_watermarks(struct drm_device *dev, int pipe,
extern void intel_update_linetime_watermarks(struct drm_device *dev, int pipe,
struct drm_display_mode *mode);
-extern unsigned long intel_gen4_compute_offset_xtiled(int *x, int *y,
- unsigned int bpp,
- unsigned int pitch);
+extern unsigned long intel_gen4_compute_page_offset(int *x, int *y,
+ unsigned int tiling_mode,
+ unsigned int bpp,
+ unsigned int pitch);
extern int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
struct drm_file *file_priv);
@@ -119,8 +119,8 @@ ivb_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb,
linear_offset = y * fb->pitches[0] + x * pixel_size;
sprsurf_offset =
- intel_gen4_compute_offset_xtiled(&x, &y,
- pixel_size, fb->pitches[0]);
+ intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
+ pixel_size, fb->pitches[0]);
linear_offset -= sprsurf_offset;
/* HSW consolidates SPRTILEOFF and SPRLINOFF into a single SPROFFSET
@@ -292,8 +292,8 @@ ilk_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb,
linear_offset = y * fb->pitches[0] + x * pixel_size;
dvssurf_offset =
- intel_gen4_compute_offset_xtiled(&x, &y,
- pixel_size, fb->pitches[0]);
+ intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
+ pixel_size, fb->pitches[0]);
linear_offset -= dvssurf_offset;
if (obj->tiling_mode != I915_TILING_NONE)
We trim the fb to fit the CRTC by computing the offset of that CRTC to its nearest tile_row origin. This allows us to use framebuffers that are larger than the CRTC limits without additional work. However, we failed to compute the offset for a linear framebuffer correctly as we treated its x-advance in whole tiles (instead of the linear increment expected), leaving the CRTC misaligned with its contents. Fixes regression from commit c2c75131244507c93f812862fdbd4f3a37139401 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Thu Jul 5 12:17:30 2012 +0200 drm/i915: adjust framebuffer base address on gen4+ v2: Adjust relative x-coordinate after linear alignment (vsyrjala) v3: Repaint with pokadots (vsyrjala) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61152 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org --- drivers/gpu/drm/i915/intel_display.c | 41 +++++++++++++++++++++------------- drivers/gpu/drm/i915/intel_drv.h | 7 +++--- drivers/gpu/drm/i915/intel_sprite.c | 8 +++---- 3 files changed, 34 insertions(+), 22 deletions(-)