[PATCH 12/18] drm/vmwgfx: Implement SOU plane update for surface backed fb

[Deepak Rawat <drawat@vmware.com>]

Using the new interface implement SOU plane update for surface backed
fb.

Signed-off-by: Deepak Rawat <drawat@vmware.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h  |   3 +
 drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c | 185 +++++++++++++++++++++++++++
 2 files changed, 188 insertions(+)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index ed5a8f62bb2b..4c251767d019 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -147,10 +147,13 @@ struct vmw_du_update_plane {
  * struct vmw_du_update_plane_surface - closure structure for surface
  * @base: base closure structure.
  * @ctx: validation context.
+ * @cmd_start: FIFO command start address (used by SOU only).
  */
 struct vmw_du_update_plane_surface {
 	struct vmw_du_update_plane base;
 	struct vmw_validation_ctx *ctx;
+	/* This member is to handle special case SOU surface update */
+	void *cmd_start;
 };
 
 /**
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
index ad0de7f0cd60..9e5d48d03dd4 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
@@ -499,6 +499,191 @@ vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
 	return vmw_bo_pin_in_vram(dev_priv, vps->bo, true);
 }
 
+static int vmw_sou_surface_prepare(struct vmw_du_update_plane *update)
+{
+	struct vmw_du_update_plane_surface *srf_update;
+	struct vmw_framebuffer_surface *vfbs;
+
+	srf_update = container_of(update, typeof(*srf_update), base);
+	vfbs = container_of(update->vfb, typeof(*vfbs), base);
+
+	return vmw_kms_helper_resource_prepare(&vfbs->surface->res, true,
+					       srf_update->ctx);
+}
+
+static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update,
+					  uint32_t num_hits)
+{
+	return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) *
+		num_hits;
+}
+
+static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update,
+					     void *cmd)
+{
+	struct vmw_du_update_plane_surface *srf_update;
+
+	srf_update = container_of(update, typeof(*srf_update), base);
+
+	/*
+	 * SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that
+	 * it bounding box is filled before iterating over all the clips. So
+	 * store the FIFO start address and revisit to fill the details.
+	 */
+	srf_update->cmd_start = cmd;
+
+	return 0;
+}
+
+static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update,
+					 void *cmd, uint32_t num_hits)
+{
+	struct vmw_kms_sou_dirty_cmd *blit = cmd;
+	struct vmw_framebuffer_surface *vfbs;
+
+	vfbs = container_of(update->vfb, typeof(*vfbs), base);
+
+	blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
+	blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) *
+		num_hits;
+
+	blit->body.srcImage.sid = vfbs->surface->res.id;
+	blit->body.destScreenId = update->du->unit;
+
+	/* Update the source and destination bounding box later in post_clip */
+	blit->body.srcRect.left = 0;
+	blit->body.srcRect.top = 0;
+	blit->body.srcRect.right = 0;
+	blit->body.srcRect.bottom = 0;
+
+	blit->body.destRect.left = 0;
+	blit->body.destRect.top = 0;
+	blit->body.destRect.right = 0;
+	blit->body.destRect.bottom = 0;
+
+	return sizeof(*blit);
+}
+
+static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update,
+					  void *cmd, struct drm_rect *clip,
+					  uint32_t src_x, uint32_t src_y)
+{
+	SVGASignedRect *rect = cmd;
+
+	/*
+	 * rects are relative to dest bounding box rect on screen object, so
+	 * translate to it later in post_clip
+	 */
+	rect->left = clip->x1;
+	rect->top = clip->y1;
+	rect->right = clip->x2;
+	rect->bottom = clip->y2;
+
+	return sizeof(*rect);
+}
+
+static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update,
+					  void *cmd, struct drm_rect *bb)
+{
+	struct vmw_du_update_plane_surface *srf_update;
+	struct drm_plane_state *state = update->plane->state;
+	struct drm_rect src_bb;
+	struct vmw_kms_sou_dirty_cmd *blit;
+	SVGASignedRect *rect;
+	uint32_t num_hits;
+	int translate_src_x;
+	int translate_src_y;
+	int i;
+
+	srf_update = container_of(update, typeof(*srf_update), base);
+
+	blit = srf_update->cmd_start;
+	rect = (SVGASignedRect *)&blit[1];
+
+	num_hits = (blit->header.size - sizeof(blit->body))/
+		sizeof(SVGASignedRect);
+
+	src_bb = *bb;
+
+	/* To translate bb back to fb src coord */
+	translate_src_x = (state->src_x >> 16) - state->crtc_x;
+	translate_src_y = (state->src_y >> 16) - state->crtc_y;
+
+	drm_rect_translate(&src_bb, translate_src_x, translate_src_y);
+
+	blit->body.srcRect.left = src_bb.x1;
+	blit->body.srcRect.top = src_bb.y1;
+	blit->body.srcRect.right = src_bb.x2;
+	blit->body.srcRect.bottom = src_bb.y2;
+
+	blit->body.destRect.left = bb->x1;
+	blit->body.destRect.top = bb->y1;
+	blit->body.destRect.right = bb->x2;
+	blit->body.destRect.bottom = bb->y2;
+
+	/* rects are relative to dest bb rect */
+	for (i = 0; i < num_hits; i++) {
+		rect->left -= bb->x1;
+		rect->top -= bb->y1;
+		rect->right -= bb->x1;
+		rect->bottom -= bb->y1;
+		rect++;
+	}
+
+	return 0;
+}
+
+static void vmw_sou_surface_finish(struct vmw_du_update_plane *update)
+{
+	struct vmw_du_update_plane_surface *srf_update =
+		container_of(update, typeof(*srf_update), base);
+
+	vmw_kms_helper_resource_finish(srf_update->ctx, update->out_fence);
+}
+
+/**
+ * vmw_sou_plane_update_surface - Update display unit for surface backed fb.
+ * @dev_priv: Device private.
+ * @plane: Plane state.
+ * @old_state: Old plane state.
+ * @vfb: Framebuffer which is blitted to display unit
+ * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
+ *             The returned fence pointer may be NULL in which case the device
+ *             has already synchronized.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv,
+					struct drm_plane *plane,
+					struct drm_plane_state *old_state,
+					struct vmw_framebuffer *vfb,
+					struct vmw_fence_obj **out_fence)
+{
+	struct vmw_du_update_plane_surface srf_update;
+	struct vmw_validation_ctx ctx;
+
+	memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface));
+	srf_update.base.plane = plane;
+	srf_update.base.old_state = old_state;
+	srf_update.base.dev_priv = dev_priv;
+	srf_update.base.du = vmw_crtc_to_du(plane->state->crtc);
+	srf_update.base.vfb = vfb;
+	srf_update.base.out_fence = out_fence;
+
+	srf_update.ctx = &ctx;
+
+	srf_update.base.prepare = vmw_sou_surface_prepare;
+	srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size;
+	srf_update.base.post_prepare = vmw_sou_surface_post_prepare;
+	srf_update.base.pre_clip = vmw_sou_surface_pre_clip;
+	srf_update.base.clip = vmw_sou_surface_clip_rect;
+	srf_update.base.post_clip = vmw_sou_surface_post_clip;
+	srf_update.base.finish = vmw_sou_surface_finish;
+	/* Nothing special to do for revert */
+	srf_update.base.revert = vmw_sou_surface_finish;
+
+	return vmw_du_helper_plane_update(&srf_update.base);
+}
 
 static void
 vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
-- 
2.17.1

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