Re: [Intel-gfx] [PATCH -v4 2/4] drm/i915: split intel_update_plane into check() and commit()

On Fri, 05 Sep 2014, Gustavo Padovan gustavo@padovan.org wrote:

From: Gustavo Padovan gustavo.padovan@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@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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