[Intel-gfx] [PATCH -v4 2/4] drm/i915: split intel_update_plane into check() and commit()
Jani Nikula
jani.nikula at linux.intel.com
Thu Sep 11 18:42:50 CEST 2014
On Fri, 05 Sep 2014, Gustavo Padovan <gustavo at padovan.org> wrote:
> From: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
>
> Due to the upcoming atomic modesetting feature we need to separate
> some update functions into a check step that can fail and a commit
> step that should, ideally, never fail.
>
> This commit splits intel_update_plane() and its commit part can still
> fail due to the fb pinning procedure.
This patch regresses our tests:
https://bugs.freedesktop.org/show_bug.cgi?id=83747
BR,
Jani.
>
> Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
> ---
> drivers/gpu/drm/i915/intel_sprite.c | 233 ++++++++++++++++++++++--------------
> 1 file changed, 141 insertions(+), 92 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
> index 07a74ef..a4306cf 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -845,57 +845,24 @@ static bool colorkey_enabled(struct intel_plane *intel_plane)
> }
>
> static int
> -intel_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,
> - uint32_t src_x, uint32_t src_y,
> - uint32_t src_w, uint32_t src_h)
> +intel_check_sprite_plane(struct drm_plane *plane,
> + struct intel_plane_state *state)
> {
> - struct drm_device *dev = plane->dev;
> - struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> + struct intel_crtc *intel_crtc = to_intel_crtc(state->crtc);
> struct intel_plane *intel_plane = to_intel_plane(plane);
> - enum pipe pipe = intel_crtc->pipe;
> + struct drm_framebuffer *fb = state->fb;
> struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
> struct drm_i915_gem_object *obj = intel_fb->obj;
> - struct drm_i915_gem_object *old_obj = intel_plane->obj;
> - int ret;
> - bool primary_enabled;
> - bool visible;
> + int crtc_x, crtc_y;
> + unsigned int crtc_w, crtc_h;
> + uint32_t src_x, src_y, src_w, src_h;
> + struct drm_rect *src = &state->src;
> + struct drm_rect *dst = &state->dst;
> + struct drm_rect *orig_src = &state->orig_src;
> + const struct drm_rect *clip = &state->clip;
> int hscale, vscale;
> int max_scale, min_scale;
> int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
> - struct drm_rect src = {
> - /* sample coordinates in 16.16 fixed point */
> - .x1 = src_x,
> - .x2 = src_x + src_w,
> - .y1 = src_y,
> - .y2 = src_y + src_h,
> - };
> - struct drm_rect dst = {
> - /* integer pixels */
> - .x1 = crtc_x,
> - .x2 = crtc_x + crtc_w,
> - .y1 = crtc_y,
> - .y2 = crtc_y + crtc_h,
> - };
> - const struct drm_rect clip = {
> - .x2 = intel_crtc->active ? intel_crtc->config.pipe_src_w : 0,
> - .y2 = intel_crtc->active ? intel_crtc->config.pipe_src_h : 0,
> - };
> - const struct {
> - int crtc_x, crtc_y;
> - unsigned int crtc_w, crtc_h;
> - uint32_t src_x, src_y, src_w, src_h;
> - } orig = {
> - .crtc_x = crtc_x,
> - .crtc_y = crtc_y,
> - .crtc_w = crtc_w,
> - .crtc_h = crtc_h,
> - .src_x = src_x,
> - .src_y = src_y,
> - .src_w = src_w,
> - .src_h = src_h,
> - };
>
> /* Don't modify another pipe's plane */
> if (intel_plane->pipe != intel_crtc->pipe) {
> @@ -927,55 +894,55 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> max_scale = intel_plane->max_downscale << 16;
> min_scale = intel_plane->can_scale ? 1 : (1 << 16);
>
> - drm_rect_rotate(&src, fb->width << 16, fb->height << 16,
> + drm_rect_rotate(src, fb->width << 16, fb->height << 16,
> intel_plane->rotation);
>
> - hscale = drm_rect_calc_hscale_relaxed(&src, &dst, min_scale, max_scale);
> + hscale = drm_rect_calc_hscale_relaxed(src, dst, min_scale, max_scale);
> BUG_ON(hscale < 0);
>
> - vscale = drm_rect_calc_vscale_relaxed(&src, &dst, min_scale, max_scale);
> + vscale = drm_rect_calc_vscale_relaxed(src, dst, min_scale, max_scale);
> BUG_ON(vscale < 0);
>
> - visible = drm_rect_clip_scaled(&src, &dst, &clip, hscale, vscale);
> + state->visible = drm_rect_clip_scaled(src, dst, clip, hscale, vscale);
>
> - crtc_x = dst.x1;
> - crtc_y = dst.y1;
> - crtc_w = drm_rect_width(&dst);
> - crtc_h = drm_rect_height(&dst);
> + crtc_x = dst->x1;
> + crtc_y = dst->y1;
> + crtc_w = drm_rect_width(dst);
> + crtc_h = drm_rect_height(dst);
>
> - if (visible) {
> + if (state->visible) {
> /* check again in case clipping clamped the results */
> - hscale = drm_rect_calc_hscale(&src, &dst, min_scale, max_scale);
> + hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale);
> if (hscale < 0) {
> DRM_DEBUG_KMS("Horizontal scaling factor out of limits\n");
> - drm_rect_debug_print(&src, true);
> - drm_rect_debug_print(&dst, false);
> + drm_rect_debug_print(src, true);
> + drm_rect_debug_print(dst, false);
>
> return hscale;
> }
>
> - vscale = drm_rect_calc_vscale(&src, &dst, min_scale, max_scale);
> + vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale);
> if (vscale < 0) {
> DRM_DEBUG_KMS("Vertical scaling factor out of limits\n");
> - drm_rect_debug_print(&src, true);
> - drm_rect_debug_print(&dst, false);
> + drm_rect_debug_print(src, true);
> + drm_rect_debug_print(dst, false);
>
> return vscale;
> }
>
> /* Make the source viewport size an exact multiple of the scaling factors. */
> - drm_rect_adjust_size(&src,
> - drm_rect_width(&dst) * hscale - drm_rect_width(&src),
> - drm_rect_height(&dst) * vscale - drm_rect_height(&src));
> + drm_rect_adjust_size(src,
> + drm_rect_width(dst) * hscale - drm_rect_width(src),
> + drm_rect_height(dst) * vscale - drm_rect_height(src));
>
> - drm_rect_rotate_inv(&src, fb->width << 16, fb->height << 16,
> + drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16,
> intel_plane->rotation);
>
> /* sanity check to make sure the src viewport wasn't enlarged */
> - WARN_ON(src.x1 < (int) src_x ||
> - src.y1 < (int) src_y ||
> - src.x2 > (int) (src_x + src_w) ||
> - src.y2 > (int) (src_y + src_h));
> + WARN_ON(src->x1 < (int) orig_src->x1 ||
> + src->y1 < (int) orig_src->y1 ||
> + src->x2 > (int) orig_src->x2 ||
> + src->y2 > (int) orig_src->y2);
>
> /*
> * Hardware doesn't handle subpixel coordinates.
> @@ -983,10 +950,10 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> * increase the source viewport size, because that could
> * push the downscaling factor out of bounds.
> */
> - src_x = src.x1 >> 16;
> - src_w = drm_rect_width(&src) >> 16;
> - src_y = src.y1 >> 16;
> - src_h = drm_rect_height(&src) >> 16;
> + src_x = src->x1 >> 16;
> + src_w = drm_rect_width(src) >> 16;
> + src_y = src->y1 >> 16;
> + src_h = drm_rect_height(src) >> 16;
>
> if (format_is_yuv(fb->pixel_format)) {
> src_x &= ~1;
> @@ -1000,12 +967,12 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> crtc_w &= ~1;
>
> if (crtc_w == 0)
> - visible = false;
> + state->visible = false;
> }
> }
>
> /* Check size restrictions when scaling */
> - if (visible && (src_w != crtc_w || src_h != crtc_h)) {
> + if (state->visible && (src_w != crtc_w || src_h != crtc_h)) {
> unsigned int width_bytes;
>
> WARN_ON(!intel_plane->can_scale);
> @@ -1013,12 +980,13 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> /* FIXME interlacing min height is 6 */
>
> if (crtc_w < 3 || crtc_h < 3)
> - visible = false;
> + state->visible = false;
>
> if (src_w < 3 || src_h < 3)
> - visible = false;
> + state->visible = false;
>
> - width_bytes = ((src_x * pixel_size) & 63) + src_w * pixel_size;
> + width_bytes = ((src_x * pixel_size) & 63) +
> + src_w * pixel_size;
>
> if (src_w > 2048 || src_h > 2048 ||
> width_bytes > 4096 || fb->pitches[0] > 4096) {
> @@ -1027,17 +995,48 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> }
> }
>
> - dst.x1 = crtc_x;
> - dst.x2 = crtc_x + crtc_w;
> - dst.y1 = crtc_y;
> - dst.y2 = crtc_y + crtc_h;
> + if (state->visible) {
> + src->x1 = src_x;
> + src->x2 = src_x + src_w;
> + src->y1 = src_y;
> + src->y2 = src_y + src_h;
> + }
> +
> + dst->x1 = crtc_x;
> + dst->x2 = crtc_x + crtc_w;
> + dst->y1 = crtc_y;
> + dst->y2 = crtc_y + crtc_h;
> +
> + return 0;
> +}
> +
> +static int
> +intel_commit_sprite_plane(struct drm_plane *plane,
> + struct intel_plane_state *state)
> +{
> + struct drm_device *dev = plane->dev;
> + struct drm_crtc *crtc = state->crtc;
> + struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> + struct intel_plane *intel_plane = to_intel_plane(plane);
> + enum pipe pipe = intel_crtc->pipe;
> + struct drm_framebuffer *fb = state->fb;
> + struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
> + struct drm_i915_gem_object *obj = intel_fb->obj;
> + struct drm_i915_gem_object *old_obj = intel_plane->obj;
> + int crtc_x, crtc_y;
> + unsigned int crtc_w, crtc_h;
> + uint32_t src_x, src_y, src_w, src_h;
> + struct drm_rect *dst = &state->dst;
> + const struct drm_rect *clip = &state->clip;
> + bool primary_enabled;
> + int ret;
>
> /*
> * If the sprite is completely covering the primary plane,
> * we can disable the primary and save power.
> */
> - primary_enabled = !drm_rect_equals(&dst, &clip) || colorkey_enabled(intel_plane);
> - WARN_ON(!primary_enabled && !visible && intel_crtc->active);
> + primary_enabled = !drm_rect_equals(dst, clip) || colorkey_enabled(intel_plane);
> + WARN_ON(!primary_enabled && !state->visible && intel_crtc->active);
>
> mutex_lock(&dev->struct_mutex);
>
> @@ -1055,14 +1054,14 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> if (ret)
> return ret;
>
> - intel_plane->crtc_x = orig.crtc_x;
> - intel_plane->crtc_y = orig.crtc_y;
> - intel_plane->crtc_w = orig.crtc_w;
> - intel_plane->crtc_h = orig.crtc_h;
> - intel_plane->src_x = orig.src_x;
> - intel_plane->src_y = orig.src_y;
> - intel_plane->src_w = orig.src_w;
> - intel_plane->src_h = orig.src_h;
> + intel_plane->crtc_x = state->orig_dst.x1;
> + intel_plane->crtc_y = state->orig_dst.y1;
> + intel_plane->crtc_w = drm_rect_width(&state->orig_dst);
> + intel_plane->crtc_h = drm_rect_height(&state->orig_dst);
> + intel_plane->src_x = state->orig_src.x1;
> + intel_plane->src_y = state->orig_src.y1;
> + intel_plane->src_w = drm_rect_width(&state->orig_src);
> + intel_plane->src_h = drm_rect_height(&state->orig_src);
> intel_plane->obj = obj;
>
> if (intel_crtc->active) {
> @@ -1076,12 +1075,22 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> if (primary_was_enabled && !primary_enabled)
> intel_pre_disable_primary(crtc);
>
> - if (visible)
> + if (state->visible) {
> + crtc_x = state->dst.x1;
> + crtc_y = state->dst.x2;
> + crtc_w = drm_rect_width(&state->dst);
> + crtc_h = drm_rect_height(&state->dst);
> + src_x = state->src.x1;
> + src_y = state->src.y1;
> + src_w = drm_rect_width(&state->src);
> + src_h = drm_rect_height(&state->src);
> intel_plane->update_plane(plane, crtc, fb, obj,
> crtc_x, crtc_y, crtc_w, crtc_h,
> src_x, src_y, src_w, src_h);
> - else
> + } else {
> intel_plane->disable_plane(plane, crtc);
> + }
> +
>
> intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_SPRITE(pipe));
>
> @@ -1109,6 +1118,46 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
> }
>
> static int
> +intel_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,
> + uint32_t src_x, uint32_t src_y,
> + uint32_t src_w, uint32_t src_h)
> +{
> + struct intel_plane_state state;
> + struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> + int ret;
> +
> + state.crtc = crtc;
> + state.fb = fb;
> +
> + /* sample coordinates in 16.16 fixed point */
> + state.src.x1 = src_x;
> + state.src.x2 = src_x + src_w;
> + state.src.y1 = src_y;
> + state.src.y2 = src_y + src_h;
> +
> + /* integer pixels */
> + state.dst.x1 = crtc_x;
> + state.dst.x2 = crtc_x + crtc_w;
> + state.dst.y1 = crtc_y;
> + state.dst.y2 = crtc_y + crtc_h;
> +
> + state.clip.x1 = 0;
> + state.clip.y1 = 0;
> + state.clip.x2 = intel_crtc->active ? intel_crtc->config.pipe_src_w : 0;
> + state.clip.y2 = intel_crtc->active ? intel_crtc->config.pipe_src_h : 0;
> + state.orig_src = state.src;
> + state.orig_dst = state.dst;
> +
> + ret = intel_check_sprite_plane(plane, &state);
> + if (ret)
> + return ret;
> +
> + return intel_commit_sprite_plane(plane, &state);
> +}
> +
> +static int
> intel_disable_plane(struct drm_plane *plane)
> {
> struct drm_device *dev = plane->dev;
> --
> 1.9.3
>
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--
Jani Nikula, Intel Open Source Technology Center
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