[PATCH v5 09/13] efi_loader: GOP: Add damage notification on BLT

[Alper Nebi Yasak]

From: Alexander Graf <agraf at csgraf.de>

Now that we have a damage tracking API, let's populate damage done by
UEFI payloads when they BLT data onto the screen.

Signed-off-by: Alexander Graf <agraf at csgraf.de>
Reported-by: Da Xue <da at libre.computer>
Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
[Alper: Add struct comment for new member]
Signed-off-by: Alper Nebi Yasak <alpernebiyasak at gmail.com>
---

Changes in v5:
- Document new vdev field in struct efi_gop_obj comment

Changes in v4:
- Skip damage on EfiBltVideoToBltBuffer

Changes in v3:
- Adapt to always assume DM is used

Changes in v2:
- Remove ifdefs from gop

 lib/efi_loader/efi_gop.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c
index 778b693f983a..db6535e080c4 100644
--- a/lib/efi_loader/efi_gop.c
+++ b/lib/efi_loader/efi_gop.c
@@ -24,6 +24,7 @@ static const efi_guid_t efi_gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
  * @ops:	graphical output protocol interface
  * @info:	graphical output mode information
  * @mode:	graphical output mode
+ * @vdev:	backing video device
  * @bpix:	bits per pixel
  * @fb:		frame buffer
  */
@@ -32,6 +33,7 @@ struct efi_gop_obj {
 	struct efi_gop ops;
 	struct efi_gop_mode_info info;
 	struct efi_gop_mode mode;
+	struct udevice *vdev;
 	/* Fields we only have access to during init */
 	u32 bpix;
 	void *fb;
@@ -120,6 +122,7 @@ static __always_inline efi_status_t gop_blt_int(struct efi_gop *this,
 	u32 *fb32 = gopobj->fb;
 	u16 *fb16 = gopobj->fb;
 	struct efi_gop_pixel *buffer = __builtin_assume_aligned(bufferp, 4);
+	bool blt_to_video = (operation != EFI_BLT_VIDEO_TO_BLT_BUFFER);
 
 	if (delta) {
 		/* Check for 4 byte alignment */
@@ -243,6 +246,9 @@ static __always_inline efi_status_t gop_blt_int(struct efi_gop *this,
 		dlineoff += dwidth;
 	}
 
+	if (blt_to_video)
+		video_damage(gopobj->vdev, dx, dy, width, height);
+
 	return EFI_SUCCESS;
 }
 
@@ -548,6 +554,7 @@ efi_status_t efi_gop_register(void)
 	gopobj->info.pixels_per_scanline = col;
 	gopobj->bpix = bpix;
 	gopobj->fb = fb;
+	gopobj->vdev = vdev;
 
 	return EFI_SUCCESS;
 }
-- 
2.40.1