Re: [PATCH v4 5/5] drm/i915: remove intel_crtc_cursor_set_obj()

Ville Syrjälä
2014-10-24T15:16:11Z

On Fri, Oct 24, 2014 at 02:51:35PM +0100, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
>
> Merge it into the plane update_plane() callback and make other
> users use the update_plane() functions instead.
>
> The fb != crtc->cursor->fb was already inside intel_crtc_cursor_set_obj()
> so we fold intel_crtc_cursor_set_obj() inside intel_commit_cursor_plane()
> and merge both paths into one.
>
> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> ---
> drivers/gpu/drm/i915/intel_display.c | 215 ++++++++++++++++-------------------
> 1 file changed, 100 insertions(+), 115 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 9a913f5..60ec165 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -8453,109 +8453,6 @@ static bool cursor_size_ok(struct drm_device *dev,
> return true;
> }
>
> -static int intel_crtc_cursor_set_obj(struct drm_crtc *crtc,
> - struct drm_i915_gem_object *obj,
> - uint32_t width, uint32_t height)
> -{
> - struct drm_device *dev = crtc->dev;
> - struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> - enum pipe pipe = intel_crtc->pipe;
> - unsigned old_width;
> - uint32_t addr;
> - int ret;
> -
> - /* if we want to turn off the cursor ignore width and height */
> - if (!obj) {
> - DRM_DEBUG_KMS("cursor off\n");
> - addr = 0;
> - mutex_lock(&dev->struct_mutex);
> - goto finish;
> - }
> -
> - /* we only need to pin inside GTT if cursor is non-phy */
> - mutex_lock(&dev->struct_mutex);
> - if (!INTEL_INFO(dev)->cursor_needs_physical) {
> - unsigned alignment;
> -
> - /*
> - * Global gtt pte registers are special registers which actually
> - * forward writes to a chunk of system memory. Which means that
> - * there is no risk that the register values disappear as soon
> - * as we call intel_runtime_pm_put(), so it is correct to wrap
> - * only the pin/unpin/fence and not more.
> - */
> - intel_runtime_pm_get(dev_priv);
> -
> - /* Note that the w/a also requires 2 PTE of padding following
> - * the bo. We currently fill all unused PTE with the shadow
> - * page and so we should always have valid PTE following the
> - * cursor preventing the VT-d warning.
> - */
> - alignment = 0;
> - if (need_vtd_wa(dev))
> - alignment = 64*1024;
> -
> - ret = i915_gem_object_pin_to_display_plane(obj, alignment, NULL);
> - if (ret) {
> - DRM_DEBUG_KMS("failed to move cursor bo into the GTT\n");
> - intel_runtime_pm_put(dev_priv);
> - goto fail_locked;
> - }
> -
> - ret = i915_gem_object_put_fence(obj);
> - if (ret) {
> - DRM_DEBUG_KMS("failed to release fence for cursor");
> - intel_runtime_pm_put(dev_priv);
> - goto fail_unpin;
> - }
> -
> - addr = i915_gem_obj_ggtt_offset(obj);
> -
> - intel_runtime_pm_put(dev_priv);
> - } else {
> - int align = IS_I830(dev) ? 16 * 1024 : 256;
> - ret = i915_gem_object_attach_phys(obj, align);
> - if (ret) {
> - DRM_DEBUG_KMS("failed to attach phys object\n");
> - goto fail_locked;
> - }
> - addr = obj->phys_handle->busaddr;
> - }
> -
> - finish:
> - if (intel_crtc->cursor_bo) {
> - if (!INTEL_INFO(dev)->cursor_needs_physical)
> - i915_gem_object_unpin_from_display_plane(intel_crtc->cursor_bo);
> - }
> -
> - i915_gem_track_fb(intel_crtc->cursor_bo, obj,
> - INTEL_FRONTBUFFER_CURSOR(pipe));
> - mutex_unlock(&dev->struct_mutex);
> -
> - old_width = intel_crtc->cursor_width;
> -
> - intel_crtc->cursor_addr = addr;
> - intel_crtc->cursor_bo = obj;
> - intel_crtc->cursor_width = width;
> - intel_crtc->cursor_height = height;
> -
> - if (intel_crtc->active) {
> - if (old_width != width)
> - intel_update_watermarks(crtc);
> - intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo != NULL);
> -
> - intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_CURSOR(pipe));
> - }
> -
> - return 0;
> -fail_unpin:
> - i915_gem_object_unpin_from_display_plane(obj);
> -fail_locked:
> - mutex_unlock(&dev->struct_mutex);
> - return ret;
> -}
> -
> static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
> u16 *blue, uint32_t start, uint32_t size)
> {
> @@ -11906,7 +11803,8 @@ intel_cursor_plane_disable(struct drm_plane *plane)
>
> BUG_ON(!plane->crtc);
>
> - return intel_crtc_cursor_set_obj(plane->crtc, NULL, 0, 0);
> + return plane->funcs->update_plane(plane, plane->crtc, NULL,
> + 0, 0, 0, 0, 0, 0, 0, 0);
> }
>
> static int
> @@ -11970,26 +11868,113 @@ intel_commit_cursor_plane(struct drm_plane *plane,
> struct intel_plane_state *state)
> {
> struct drm_crtc *crtc = state->crtc;
> + struct drm_device *dev = crtc->dev;
> + struct drm_i915_private *dev_priv = dev->dev_private;
> struct drm_framebuffer *fb = state->fb;
> struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> - struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
> - struct drm_i915_gem_object *obj = intel_fb->obj;
> - int crtc_w, crtc_h;
> + struct drm_i915_gem_object *obj = intel_fb_obj(fb);
> + enum pipe pipe = intel_crtc->pipe;
> + unsigned old_width;
> + uint32_t addr;
> + int ret;
>
> crtc->cursor_x = state->orig_dst.x1;
> crtc->cursor_y = state->orig_dst.y1;
> - if (fb != crtc->cursor->fb) {
> - crtc_w = drm_rect_width(&state->orig_dst);
> - crtc_h = drm_rect_height(&state->orig_dst);
> - return intel_crtc_cursor_set_obj(crtc, obj, crtc_w, crtc_h);
> +
> + if (intel_crtc->cursor_bo == obj)
> + goto update;
> +
> + /* if we want to turn off the cursor ignore width and height */
> + if (!obj) {
> + DRM_DEBUG_KMS("cursor off\n");
> + addr = 0;
> + mutex_lock(&dev->struct_mutex);
> + goto finish;
> + }
> +
> + /* we only need to pin inside GTT if cursor is non-phy */
> + mutex_lock(&dev->struct_mutex);
> + if (!INTEL_INFO(dev)->cursor_needs_physical) {
> + unsigned alignment;
> +
> + /*
> + * Global gtt pte registers are special registers which actually
> + * forward writes to a chunk of system memory. Which means that
> + * there is no risk that the register values disappear as soon
> + * as we call intel_runtime_pm_put(), so it is correct to wrap
> + * only the pin/unpin/fence and not more.
> + */
> + intel_runtime_pm_get(dev_priv);
> +
> + /* Note that the w/a also requires 2 PTE of padding following
> + * the bo. We currently fill all unused PTE with the shadow
> + * page and so we should always have valid PTE following the
> + * cursor preventing the VT-d warning.
> + */
> + alignment = 0;
> + if (need_vtd_wa(dev))
> + alignment = 64*1024;
> +
> + ret = i915_gem_object_pin_to_display_plane(obj, alignment, NULL);
> + if (ret) {
> + DRM_DEBUG_KMS("failed to move cursor bo into the GTT\n");
> + intel_runtime_pm_put(dev_priv);
> + goto fail_locked;
> + }
> +
> + ret = i915_gem_object_put_fence(obj);
> + if (ret) {
> + DRM_DEBUG_KMS("failed to release fence for cursor");
> + intel_runtime_pm_put(dev_priv);
> + goto fail_unpin;
> + }
> +
> + addr = i915_gem_obj_ggtt_offset(obj);
> +
> + intel_runtime_pm_put(dev_priv);
> } else {
> - intel_crtc_update_cursor(crtc, state->visible);
> + int align = IS_I830(dev) ? 16 * 1024 : 256;
> + ret = i915_gem_object_attach_phys(obj, align);
> + if (ret) {
> + DRM_DEBUG_KMS("failed to attach phys object\n");
> + goto fail_locked;
> + }
> + addr = obj->phys_handle->busaddr;
> + }
>
> - intel_frontbuffer_flip(crtc->dev,
> - INTEL_FRONTBUFFER_CURSOR(intel_crtc->pipe));
> +finish:
> + if (intel_crtc->cursor_bo) {
> + if (!INTEL_INFO(dev)->cursor_needs_physical)
> + i915_gem_object_unpin_from_display_plane(intel_crtc->cursor_bo);
> + }
>
> - return 0;
> + i915_gem_track_fb(intel_crtc->cursor_bo, obj,
> + INTEL_FRONTBUFFER_CURSOR(pipe));
> + mutex_unlock(&dev->struct_mutex);
> +
> + intel_crtc->cursor_addr = addr;
> + intel_crtc->cursor_bo = obj;
> +update:
> + old_width = intel_crtc->cursor_width;
> +
> + intel_crtc->cursor_width = drm_rect_width(&state->orig_dst);
> + intel_crtc->cursor_height = drm_rect_height(&state->orig_dst);
> +
> + if (intel_crtc->active) {
> + if (old_width != intel_crtc->cursor_width)
> + intel_update_watermarks(crtc);
> + intel_crtc_update_cursor(crtc, state->visible);

So we need to make sure state->visible==false when there's no fb. I
suppose we should just do that in drm_plane_helper_check_update().

> +
> + intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_CURSOR(pipe));
> }
> +
> + return 0;
> +fail_unpin:
> + i915_gem_object_unpin_from_display_plane(obj);
> +fail_locked:
> + mutex_unlock(&dev->struct_mutex);
> + drm_gem_object_unreference_unlocked(&obj->base);
> + return ret;
> }
>
> static int
> --
> 1.9.3
>
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--
Ville Syrjälä
Intel OTC