From 9996e8e8f322e95536696fddc8beebe0454e3d79 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Wed, 10 Nov 2021 11:36:55 +0100
Subject: drm/format-helper: Rework format-helper memcpy functions
MIME-Version: 1.0
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Git-commit: 27bd66dd6419c45e320f34ed419cd80833de1161
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Move destination-buffer clipping from all format-helper memcpy
function into callers. Support destination-buffer pitch. Only
distinguish between system and I/O memory, but use same logic
everywhere.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211110103702.374-3-tzimmermann@suse.de
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/drm_format_helper.c | 35 ++++++++++++---------
drivers/gpu/drm/drm_mipi_dbi.c | 2 +-
drivers/gpu/drm/gud/gud_pipe.c | 2 +-
drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 5 ++-
drivers/gpu/drm/mgag200/mgag200_mode.c | 4 ++-
drivers/gpu/drm/tiny/cirrus.c | 14 +++++----
include/drm/drm_format_helper.h | 9 +++---
7 files changed, 41 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 9d2a4c27689b..32b4c9cff2ef 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -41,58 +41,62 @@ EXPORT_SYMBOL(drm_fb_clip_offset);
/**
* drm_fb_memcpy - Copy clip buffer
* @dst: Destination buffer
+ * @dst_pitch: Number of bytes between two consecutive scanlines within dst
* @vaddr: Source buffer
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
*
* This function does not apply clipping on dst, i.e. the destination
- * is a small buffer containing the clip rect only.
+ * is at the top-left corner.
*/
-void drm_fb_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb,
- struct drm_rect *clip)
+void drm_fb_memcpy(void *dst, unsigned int dst_pitch, const void *vaddr,
+ const struct drm_framebuffer *fb, const struct drm_rect *clip)
{
unsigned int cpp = fb->format->cpp[0];
size_t len = (clip->x2 - clip->x1) * cpp;
unsigned int y, lines = clip->y2 - clip->y1;
+ if (!dst_pitch)
+ dst_pitch = len;
+
vaddr += clip_offset(clip, fb->pitches[0], cpp);
for (y = 0; y < lines; y++) {
memcpy(dst, vaddr, len);
vaddr += fb->pitches[0];
- dst += len;
+ dst += dst_pitch;
}
}
EXPORT_SYMBOL(drm_fb_memcpy);
/**
- * drm_fb_memcpy_dstclip - Copy clip buffer
+ * drm_fb_memcpy_toio - Copy clip buffer
* @dst: Destination buffer (iomem)
* @dst_pitch: Number of bytes between two consecutive scanlines within dst
* @vaddr: Source buffer
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
*
- * This function applies clipping on dst, i.e. the destination is a
- * full (iomem) framebuffer but only the clip rect content is copied over.
+ * This function does not apply clipping on dst, i.e. the destination
+ * is at the top-left corner.
*/
-void drm_fb_memcpy_dstclip(void __iomem *dst, unsigned int dst_pitch,
- void *vaddr, struct drm_framebuffer *fb,
- struct drm_rect *clip)
+void drm_fb_memcpy_toio(void __iomem *dst, unsigned int dst_pitch, const void *vaddr,
+ const struct drm_framebuffer *fb, const struct drm_rect *clip)
{
unsigned int cpp = fb->format->cpp[0];
- unsigned int offset = clip_offset(clip, dst_pitch, cpp);
size_t len = (clip->x2 - clip->x1) * cpp;
unsigned int y, lines = clip->y2 - clip->y1;
- vaddr += offset;
- dst += offset;
+ if (!dst_pitch)
+ dst_pitch = len;
+
+ vaddr += clip_offset(clip, fb->pitches[0], cpp);
for (y = 0; y < lines; y++) {
memcpy_toio(dst, vaddr, len);
vaddr += fb->pitches[0];
dst += dst_pitch;
}
}
-EXPORT_SYMBOL(drm_fb_memcpy_dstclip);
+EXPORT_SYMBOL(drm_fb_memcpy_toio);
/**
* drm_fb_swab - Swap bytes into clip buffer
@@ -481,7 +485,8 @@ int drm_fb_blit_rect_dstclip(void __iomem *dst, unsigned int dst_pitch,
dst_format = DRM_FORMAT_XRGB8888;
if (dst_format == fb_format) {
- drm_fb_memcpy_dstclip(dst, dst_pitch, vmap, fb, clip);
+ dst += clip_offset(clip, dst_pitch, fb->format->cpp[0]);
+ drm_fb_memcpy_toio(dst, dst_pitch, vmap, fb, clip);
return 0;
} else if (dst_format == DRM_FORMAT_RGB565) {
diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index 71b646c4131f..c09df8b06c7a 100644
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -213,7 +213,7 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
if (swap)
drm_fb_swab(dst, src, fb, clip, !gem->import_attach);
else
- drm_fb_memcpy(dst, src, fb, clip);
+ drm_fb_memcpy(dst, 0, src, fb, clip);
break;
case DRM_FORMAT_XRGB8888:
drm_fb_xrgb8888_to_rgb565(dst, src, fb, clip, swap);
diff --git a/drivers/gpu/drm/gud/gud_pipe.c b/drivers/gpu/drm/gud/gud_pipe.c
index daf75c178c2b..a92112ffd37a 100644
--- a/drivers/gpu/drm/gud/gud_pipe.c
+++ b/drivers/gpu/drm/gud/gud_pipe.c
@@ -206,7 +206,7 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb,
/* can compress directly from the framebuffer */
buf = vaddr + rect->y1 * pitch;
} else {
- drm_fb_memcpy(buf, vaddr, fb, rect);
+ drm_fb_memcpy(buf, 0, vaddr, fb, rect);
}
memset(req, 0, sizeof(*req));
diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
index 8c97a20dfe23..93f51e70a951 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
@@ -23,13 +23,16 @@ static int hyperv_blit_to_vram_rect(struct drm_framebuffer *fb,
struct drm_rect *rect)
{
struct hyperv_drm_device *hv = to_hv(fb->dev);
+ void __iomem *dst = hv->vram;
void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */
int idx;
if (!drm_dev_enter(&hv->dev, &idx))
return -ENODEV;
- drm_fb_memcpy_dstclip(hv->vram, fb->pitches[0], vmap, fb, rect);
+ dst += drm_fb_clip_offset(fb->pitches[0], fb->format, rect);
+ drm_fb_memcpy_toio(dst, fb->pitches[0], vmap, fb, rect);
+
drm_dev_exit(idx);
return 0;
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index fd98e8bbc550..b983541a4c53 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -847,9 +847,11 @@ static void
mgag200_handle_damage(struct mga_device *mdev, struct drm_framebuffer *fb,
struct drm_rect *clip, const struct dma_buf_map *map)
{
+ void __iomem *dst = mdev->vram;
void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */
- drm_fb_memcpy_dstclip(mdev->vram, fb->pitches[0], vmap, fb, clip);
+ dst += drm_fb_clip_offset(fb->pitches[0], fb->format, clip);
+ drm_fb_memcpy_toio(dst, fb->pitches[0], vmap, fb, clip);
/* Always scanout image at VRAM offset 0 */
mgag200_set_startadd(mdev, (u32)0);
diff --git a/drivers/gpu/drm/tiny/cirrus.c b/drivers/gpu/drm/tiny/cirrus.c
index 4611ec408506..5344e506e8a9 100644
--- a/drivers/gpu/drm/tiny/cirrus.c
+++ b/drivers/gpu/drm/tiny/cirrus.c
@@ -317,28 +317,30 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb, const struct dma_buf_
struct drm_rect *rect)
{
struct cirrus_device *cirrus = to_cirrus(fb->dev);
+ void __iomem *dst = cirrus->vram;
void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */
int idx;
if (!drm_dev_enter(&cirrus->dev, &idx))
return -ENODEV;
- if (cirrus->cpp == fb->format->cpp[0])
- drm_fb_memcpy_dstclip(cirrus->vram, fb->pitches[0],
- vmap, fb, rect);
+ if (cirrus->cpp == fb->format->cpp[0]) {
+ dst += drm_fb_clip_offset(fb->pitches[0], fb->format, rect);
+ drm_fb_memcpy_toio(dst, fb->pitches[0], vmap, fb, rect);
- else if (fb->format->cpp[0] == 4 && cirrus->cpp == 2)
+ } else if (fb->format->cpp[0] == 4 && cirrus->cpp == 2) {
drm_fb_xrgb8888_to_rgb565_dstclip(cirrus->vram,
cirrus->pitch,
vmap, fb, rect, false);
- else if (fb->format->cpp[0] == 4 && cirrus->cpp == 3)
+ } else if (fb->format->cpp[0] == 4 && cirrus->cpp == 3) {
drm_fb_xrgb8888_to_rgb888_dstclip(cirrus->vram,
cirrus->pitch,
vmap, fb, rect);
- else
+ } else {
WARN_ON_ONCE("cpp mismatch");
+ }
drm_dev_exit(idx);
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
index f5a8b334b18d..1fc3ba7b6060 100644
--- a/include/drm/drm_format_helper.h
+++ b/include/drm/drm_format_helper.h
@@ -13,11 +13,10 @@ struct drm_rect;
unsigned int drm_fb_clip_offset(unsigned int pitch, const struct drm_format_info *format,
const struct drm_rect *clip);
-void drm_fb_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb,
- struct drm_rect *clip);
-void drm_fb_memcpy_dstclip(void __iomem *dst, unsigned int dst_pitch, void *vaddr,
- struct drm_framebuffer *fb,
- struct drm_rect *clip);
+void drm_fb_memcpy(void *dst, unsigned int dst_pitch, const void *vaddr,
+ const struct drm_framebuffer *fb, const struct drm_rect *clip);
+void drm_fb_memcpy_toio(void __iomem *dst, unsigned int dst_pitch, const void *vaddr,
+ const struct drm_framebuffer *fb, const struct drm_rect *clip);
void drm_fb_swab(void *dst, void *src, struct drm_framebuffer *fb,
struct drm_rect *clip, bool cached);
void drm_fb_xrgb8888_to_rgb332(void *dst, void *vaddr, struct drm_framebuffer *fb,
--
2.38.1