We were previously setting the pitch based on a perfectly packed buffer.
This does not necessarily happen. Either modetest started generating
such buffers recently, or earlier testing only happened with well-picked
overlay sizes.
While we're at it, beef up and refactor the error state detection.
Signed-off-by: Ilia Mirkin <imir...@alum.mit.edu>
---
drivers/gpu/drm/nouveau/dispnv04/overlay.c | 62 ++++++++++++++++--------------
1 file changed, 34 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv04/overlay.c
b/drivers/gpu/drm/nouveau/dispnv04/overlay.c
index e54944d23268..5bd63c2f14a6 100644
--- a/drivers/gpu/drm/nouveau/dispnv04/overlay.c
+++ b/drivers/gpu/drm/nouveau/dispnv04/overlay.c
@@ -90,6 +90,26 @@ cos_mul(int degrees, int factor)
}
static int
+verify_scaling(const struct drm_framebuffer *fb, uint8_t shift,
+ uint32_t src_x, uint32_t src_y, uint32_t src_w, uint32_t src_h,
+ uint32_t crtc_w, uint32_t crtc_h)
+{
+ if (crtc_w < (src_w >> shift) || crtc_h < (src_h >> shift)) {
+ DRM_DEBUG_KMS("Unsuitable framebuffer scaling: %dx%d ->
%dx%d\n",
+ src_w, src_h, crtc_w, crtc_h);
+ return -ERANGE;
+ }
+
+ if (src_x != 0 || src_y != 0) {
+ DRM_DEBUG_KMS("Unsuitable framebuffer offset: %d,%d\n",
+ src_x, src_y);
+ return -ERANGE;
+ }
+
+ return 0;
+}
+
+static int
nv10_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb, int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
@@ -107,7 +127,9 @@ nv10_update_plane(struct drm_plane *plane, struct drm_crtc
*crtc,
bool flip = nv_plane->flip;
int soff = NV_PCRTC0_SIZE * nv_crtc->index;
int soff2 = NV_PCRTC0_SIZE * !nv_crtc->index;
- int format, ret;
+ unsigned shift = drm->client.device.info.chipset >= 0x30 ? 1 : 3;
+ unsigned format = 0;
+ int ret;
/* Source parameters given in 16.16 fixed point, ignore fractional. */
src_x >>= 16;
@@ -115,18 +137,9 @@ nv10_update_plane(struct drm_plane *plane, struct drm_crtc
*crtc,
src_w >>= 16;
src_h >>= 16;
- format = ALIGN(src_w * 4, 0x100);
-
- if (format > 0xffff)
- return -ERANGE;
-
- if (drm->client.device.info.chipset >= 0x30) {
- if (crtc_w < (src_w >> 1) || crtc_h < (src_h >> 1))
- return -ERANGE;
- } else {
- if (crtc_w < (src_w >> 3) || crtc_h < (src_h >> 3))
- return -ERANGE;
- }
+ ret = verify_scaling(fb, shift, 0, 0, src_w, src_h, crtc_w, crtc_h);
+ if (ret)
+ return ret;
ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM, false);
if (ret)
@@ -160,7 +173,7 @@ nv10_update_plane(struct drm_plane *plane, struct drm_crtc
*crtc,
nvif_wr32(dev, NV_PVIDEO_UVPLANE_OFFSET_BUFF(flip),
nv_fb->nvbo->bo.offset + fb->offsets[1]);
}
- nvif_wr32(dev, NV_PVIDEO_FORMAT(flip), format);
+ nvif_wr32(dev, NV_PVIDEO_FORMAT(flip), format | fb->pitches[0]);
nvif_wr32(dev, NV_PVIDEO_STOP, 0);
/* TODO: wait for vblank? */
nvif_wr32(dev, NV_PVIDEO_BUFFER, flip ? 0x10 : 0x1);
@@ -357,7 +370,7 @@ nv04_update_plane(struct drm_plane *plane, struct drm_crtc
*crtc,
struct nouveau_bo *cur = nv_plane->cur;
uint32_t overlay = 1;
int brightness = (nv_plane->brightness - 512) * 62 / 512;
- int pitch, ret, i;
+ int ret, i;
/* Source parameters given in 16.16 fixed point, ignore fractional. */
src_x >>= 16;
@@ -365,17 +378,9 @@ nv04_update_plane(struct drm_plane *plane, struct drm_crtc
*crtc,
src_w >>= 16;
src_h >>= 16;
- pitch = ALIGN(src_w * 4, 0x100);
-
- if (pitch > 0xffff)
- return -ERANGE;
-
- /* TODO: Compute an offset? Not sure how to do this for YUYV. */
- if (src_x != 0 || src_y != 0)
- return -ERANGE;
-
- if (crtc_w < src_w || crtc_h < src_h)
- return -ERANGE;
+ ret = verify_scaling(fb, 0, src_x, src_y, src_w, src_h, crtc_w, crtc_h);
+ if (ret)
+ return ret;
ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM, false);
if (ret)
@@ -389,8 +394,9 @@ nv04_update_plane(struct drm_plane *plane, struct drm_crtc
*crtc,
for (i = 0; i < 2; i++) {
nvif_wr32(dev, NV_PVIDEO_BUFF0_START_ADDRESS + 4 * i,
- nv_fb->nvbo->bo.offset);
- nvif_wr32(dev, NV_PVIDEO_BUFF0_PITCH_LENGTH + 4 * i, pitch);
+ nv_fb->nvbo->bo.offset);
+ nvif_wr32(dev, NV_PVIDEO_BUFF0_PITCH_LENGTH + 4 * i,
+ fb->pitches[0]);
nvif_wr32(dev, NV_PVIDEO_BUFF0_OFFSET + 4 * i, 0);
}
nvif_wr32(dev, NV_PVIDEO_WINDOW_START, crtc_y << 16 | crtc_x);
--
2.13.0
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