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drm/format-helper: Merge drm_fb_memcpy() and drm_fb_memcpy_toio()

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Merge drm_fb_memcpy() and drm_fb_memcpy_toio() into a drm_fb_memcpy()
that uses struct iosys_map for buffers. The new function also supports
multi-plane color formats. Convert all users of the original helpers.

v2:
	* rebase onto refactored mgag200
	* use drm_formap_info_bpp() (Sam)
	* do static init in hyperv and mgag200 (Sam)
	* update documentation (Sam)
	* add TODO on vaddr location (Sam)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-4-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2022-08-08 14:53:55 +02:00
parent 71bf55872c
commit edbe262acf
7 changed files with 69 additions and 72 deletions
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88
drivers/gpu/drm/drm_format_helper.c
View File

@ -131,64 +131,58 @@ static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch, unsigned
/**
* drm_fb_memcpy - Copy clip buffer
* @dst: Destination buffer
* @dst_pitch: Number of bytes between two consecutive scanlines within dst
* @vaddr: Source buffer
* @dst: Array of destination buffers
* @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines
* within @dst; can be NULL if scanlines are stored next to each other.
* @vmap: Array of source buffers
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
*
* This function does not apply clipping on dst, i.e. the destination
* is at the top-left corner.
* This function copies parts of a framebuffer to display memory. Destination and
* framebuffer formats must match. No conversion takes place. The parameters @dst,
* @dst_pitch and @vmap refer to arrays. Each array must have at least as many entries
* as there are planes in @fb's format. Each entry stores the value for the format's
* respective color plane at the same index.
*
* This function does not apply clipping on @dst (i.e. the destination is at the
* top-left corner).
*/
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(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *vmap, 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;
static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
0, 0, 0, 0
};
const struct drm_format_info *format = fb->format;
unsigned int i, y, lines = drm_rect_height(clip);
if (!dst_pitch)
dst_pitch = len;
dst_pitch = default_dst_pitch;
vaddr += clip_offset(clip, fb->pitches[0], cpp);
for (y = 0; y < lines; y++) {
memcpy(dst, vaddr, len);
vaddr += fb->pitches[0];
dst += dst_pitch;
for (i = 0; i < format->num_planes; ++i) {
unsigned int bpp_i = drm_format_info_bpp(format, i);
unsigned int cpp_i = DIV_ROUND_UP(bpp_i, 8);
size_t len_i = DIV_ROUND_UP(drm_rect_width(clip) * bpp_i, 8);
unsigned int dst_pitch_i = dst_pitch[i];
struct iosys_map dst_i = dst[i];
struct iosys_map vmap_i = vmap[i];
if (!dst_pitch_i)
dst_pitch_i = len_i;
iosys_map_incr(&vmap_i, clip_offset(clip, fb->pitches[i], cpp_i));
for (y = 0; y < lines; y++) {
/* TODO: handle vmap_i in I/O memory here */
iosys_map_memcpy_to(&dst_i, 0, vmap_i.vaddr, len_i);
iosys_map_incr(&vmap_i, fb->pitches[i]);
iosys_map_incr(&dst_i, dst_pitch_i);
}
}
}
EXPORT_SYMBOL(drm_fb_memcpy);
/**
* 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 does not apply clipping on dst, i.e. the destination
* is at the top-left corner.
*/
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];
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_toio(dst, vaddr, len);
vaddr += fb->pitches[0];
dst += dst_pitch;
}
}
EXPORT_SYMBOL(drm_fb_memcpy_toio);
static void drm_fb_swab16_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
u16 *dbuf16 = dbuf;
@ -587,7 +581,7 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d
dst_format = DRM_FORMAT_XRGB2101010;
if (dst_format == fb_format) {
drm_fb_memcpy_toio(dst[0].vaddr_iomem, dst_pitch[0], vmap[0].vaddr, fb, clip);
drm_fb_memcpy(dst, dst_pitch, vmap, fb, clip);
return 0;
} else if (dst_format == DRM_FORMAT_RGB565) {

3
drivers/gpu/drm/drm_mipi_dbi.c
View File

@ -205,6 +205,7 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
struct drm_gem_object *gem = drm_gem_fb_get_obj(fb, 0);
struct iosys_map map[DRM_FORMAT_MAX_PLANES];
struct iosys_map data[DRM_FORMAT_MAX_PLANES];
struct iosys_map dst_map = IOSYS_MAP_INIT_VADDR(dst);
void *src;
int ret;
@ -222,7 +223,7 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
if (swap)
drm_fb_swab(dst, 0, src, fb, clip, !gem->import_attach);
else
drm_fb_memcpy(dst, 0, src, fb, clip);
drm_fb_memcpy(&dst_map, NULL, data, fb, clip);
break;
case DRM_FORMAT_XRGB8888:
drm_fb_xrgb8888_to_rgb565(dst, 0, src, fb, clip, swap);

4
drivers/gpu/drm/gud/gud_pipe.c
View File

@ -156,6 +156,7 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb,
u8 compression = gdrm->compression;
struct iosys_map map[DRM_FORMAT_MAX_PLANES];
struct iosys_map map_data[DRM_FORMAT_MAX_PLANES];
struct iosys_map dst;
void *vaddr, *buf;
size_t pitch, len;
int ret = 0;
@ -179,6 +180,7 @@ retry:
buf = gdrm->compress_buf;
else
buf = gdrm->bulk_buf;
iosys_map_set_vaddr(&dst, buf);
/*
* Imported buffers are assumed to be write-combined and thus uncached
@ -208,7 +210,7 @@ retry:
/* can compress directly from the framebuffer */
buf = vaddr + rect->y1 * pitch;
} else {
drm_fb_memcpy(buf, 0, vaddr, fb, rect);
drm_fb_memcpy(&dst, NULL, map_data, fb, rect);
}
memset(req, 0, sizeof(*req));

9
drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
View File

@ -21,19 +21,18 @@
#include "hyperv_drm.h"
static int hyperv_blit_to_vram_rect(struct drm_framebuffer *fb,
const struct iosys_map *map,
const struct iosys_map *vmap,
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 */
struct iosys_map dst = IOSYS_MAP_INIT_VADDR_IOMEM(hv->vram);
int idx;
if (!drm_dev_enter(&hv->dev, &idx))
return -ENODEV;
dst += drm_fb_clip_offset(fb->pitches[0], fb->format, rect);
drm_fb_memcpy_toio(dst, fb->pitches[0], vmap, fb, rect);
iosys_map_incr(&dst, drm_fb_clip_offset(fb->pitches[0], fb->format, rect));
drm_fb_memcpy(&dst, fb->pitches, vmap, fb, rect);
drm_dev_exit(idx);

9
drivers/gpu/drm/mgag200/mgag200_mode.c
View File

@ -430,13 +430,12 @@ static void mgag200_disable_display(struct mga_device *mdev)
}
static void mgag200_handle_damage(struct mga_device *mdev, const struct iosys_map *vmap,
struct drm_framebuffer *fb, const struct drm_rect *clip)
struct drm_framebuffer *fb, struct drm_rect *clip)
{
void __iomem *dst = mdev->vram;
void *vaddr = vmap[0].vaddr; /* TODO: Use mapping abstraction properly */
struct iosys_map dst = IOSYS_MAP_INIT_VADDR_IOMEM(mdev->vram);
dst += drm_fb_clip_offset(fb->pitches[0], fb->format, clip);
drm_fb_memcpy_toio(dst, fb->pitches[0], vaddr, fb, clip);
iosys_map_incr(&dst, drm_fb_clip_offset(fb->pitches[0], fb->format, clip));
drm_fb_memcpy(&dst, fb->pitches, vmap, fb, clip);
}
/*

21
drivers/gpu/drm/tiny/cirrus.c
View File

@ -316,28 +316,31 @@ static int cirrus_mode_set(struct cirrus_device *cirrus,
}
static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
const struct iosys_map *map,
const struct iosys_map *vmap,
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 */
struct iosys_map dst;
void *vaddr = vmap->vaddr; /* TODO: Use mapping abstraction properly */
int idx;
if (!drm_dev_enter(&cirrus->dev, &idx))
return -ENODEV;
iosys_map_set_vaddr_iomem(&dst, cirrus->vram);
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);
iosys_map_incr(&dst, drm_fb_clip_offset(fb->pitches[0], fb->format, rect));
drm_fb_memcpy(&dst, fb->pitches, vmap, fb, rect);
} else if (fb->format->cpp[0] == 4 && cirrus->cpp == 2) {
dst += drm_fb_clip_offset(cirrus->pitch, fb->format, rect);
drm_fb_xrgb8888_to_rgb565_toio(dst, cirrus->pitch, vmap, fb, rect, false);
iosys_map_incr(&dst, drm_fb_clip_offset(cirrus->pitch, fb->format, rect));
drm_fb_xrgb8888_to_rgb565_toio(dst.vaddr_iomem, cirrus->pitch, vaddr, fb, rect,
false);
} else if (fb->format->cpp[0] == 4 && cirrus->cpp == 3) {
dst += drm_fb_clip_offset(cirrus->pitch, fb->format, rect);
drm_fb_xrgb8888_to_rgb888_toio(dst, cirrus->pitch, vmap, fb, rect);
iosys_map_incr(&dst, drm_fb_clip_offset(cirrus->pitch, fb->format, rect));
drm_fb_xrgb8888_to_rgb888_toio(dst.vaddr_iomem, cirrus->pitch, vaddr, fb, rect);
} else {
WARN_ON_ONCE("cpp mismatch");

7
include/drm/drm_format_helper.h
View File

@ -14,10 +14,9 @@ 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, 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_memcpy(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *vmap, const struct drm_framebuffer *fb,
const struct drm_rect *clip);
void drm_fb_swab(void *dst, unsigned int dst_pitch, const void *src,
const struct drm_framebuffer *fb, const struct drm_rect *clip,
bool cached);