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drm/gud: Prepare buffer for CPU access in gud_flush_work()

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In preparation for moving to the shadow plane helper prepare the
framebuffer for CPU access as early as possible.

v2:
- Use src as variable name for iosys_map (Thomas)

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221122-gud-shadow-plane-v2-4-435037990a83@tronnes.org
This commit is contained in:
Noralf Trønnes 2022-11-30 20:26:52 +01:00
parent 754a6ca85c
commit 562fd7cc67
1 changed files with 33 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
drivers/gpu/drm/gud/gud_pipe.c
View File

@ -15,6 +15,7 @@
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_rect.h>
@ -152,32 +153,21 @@ static size_t gud_xrgb8888_to_color(u8 *dst, const struct drm_format_info *forma
}
static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb,
const struct iosys_map *src, bool cached_reads,
const struct drm_format_info *format, struct drm_rect *rect,
struct gud_set_buffer_req *req)
{
struct dma_buf_attachment *import_attach = fb->obj[0]->import_attach;
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;
pitch = drm_format_info_min_pitch(format, 0, drm_rect_width(rect));
len = pitch * drm_rect_height(rect);
if (len > gdrm->bulk_len)
return -E2BIG;
ret = drm_gem_fb_vmap(fb, map, map_data);
if (ret)
return ret;
vaddr = map_data[0].vaddr;
ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE);
if (ret)
goto vunmap;
vaddr = src[0].vaddr;
retry:
if (compression)
buf = gdrm->compress_buf;
@ -192,29 +182,27 @@ retry:
if (format != fb->format) {
if (format->format == GUD_DRM_FORMAT_R1) {
len = gud_xrgb8888_to_r124(buf, format, vaddr, fb, rect);
if (!len) {
ret = -ENOMEM;
goto end_cpu_access;
}
if (!len)
return -ENOMEM;
} else if (format->format == DRM_FORMAT_R8) {
drm_fb_xrgb8888_to_gray8(&dst, NULL, map_data, fb, rect);
drm_fb_xrgb8888_to_gray8(&dst, NULL, src, fb, rect);
} else if (format->format == DRM_FORMAT_RGB332) {
drm_fb_xrgb8888_to_rgb332(&dst, NULL, map_data, fb, rect);
drm_fb_xrgb8888_to_rgb332(&dst, NULL, src, fb, rect);
} else if (format->format == DRM_FORMAT_RGB565) {
drm_fb_xrgb8888_to_rgb565(&dst, NULL, map_data, fb, rect,
drm_fb_xrgb8888_to_rgb565(&dst, NULL, src, fb, rect,
gud_is_big_endian());
} else if (format->format == DRM_FORMAT_RGB888) {
drm_fb_xrgb8888_to_rgb888(&dst, NULL, map_data, fb, rect);
drm_fb_xrgb8888_to_rgb888(&dst, NULL, src, fb, rect);
} else {
len = gud_xrgb8888_to_color(buf, format, vaddr, fb, rect);
}
} else if (gud_is_big_endian() && format->cpp[0] > 1) {
drm_fb_swab(&dst, NULL, map_data, fb, rect, !import_attach);
} else if (compression && !import_attach && pitch == fb->pitches[0]) {
drm_fb_swab(&dst, NULL, src, fb, rect, cached_reads);
} else if (compression && cached_reads && pitch == fb->pitches[0]) {
/* can compress directly from the framebuffer */
buf = vaddr + rect->y1 * pitch;
} else {
drm_fb_memcpy(&dst, NULL, map_data, fb, rect);
drm_fb_memcpy(&dst, NULL, src, fb, rect);
}
memset(req, 0, sizeof(*req));
@ -237,12 +225,7 @@ retry:
req->compressed_length = cpu_to_le32(complen);
}
end_cpu_access:
drm_gem_fb_end_cpu_access(fb, DMA_FROM_DEVICE);
vunmap:
drm_gem_fb_vunmap(fb, map);
return ret;
return 0;
}
struct gud_usb_bulk_context {
@ -285,6 +268,7 @@ static int gud_usb_bulk(struct gud_device *gdrm, size_t len)
}
static int gud_flush_rect(struct gud_device *gdrm, struct drm_framebuffer *fb,
const struct iosys_map *src, bool cached_reads,
const struct drm_format_info *format, struct drm_rect *rect)
{
struct gud_set_buffer_req req;
@ -293,7 +277,7 @@ static int gud_flush_rect(struct gud_device *gdrm, struct drm_framebuffer *fb,
drm_dbg(&gdrm->drm, "Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
ret = gud_prep_flush(gdrm, fb, format, rect, &req);
ret = gud_prep_flush(gdrm, fb, src, cached_reads, format, rect, &req);
if (ret)
return ret;
@ -334,6 +318,7 @@ void gud_clear_damage(struct gud_device *gdrm)
}
static void gud_flush_damage(struct gud_device *gdrm, struct drm_framebuffer *fb,
const struct iosys_map *src, bool cached_reads,
struct drm_rect *damage)
{
const struct drm_format_info *format;
@ -358,7 +343,7 @@ static void gud_flush_damage(struct gud_device *gdrm, struct drm_framebuffer *fb
rect.y1 += i * lines;
rect.y2 = min_t(u32, rect.y1 + lines, damage->y2);
ret = gud_flush_rect(gdrm, fb, format, &rect);
ret = gud_flush_rect(gdrm, fb, src, cached_reads, format, &rect);
if (ret) {
if (ret != -ENODEV && ret != -ECONNRESET &&
ret != -ESHUTDOWN && ret != -EPROTO)
@ -373,9 +358,10 @@ static void gud_flush_damage(struct gud_device *gdrm, struct drm_framebuffer *fb
void gud_flush_work(struct work_struct *work)
{
struct gud_device *gdrm = container_of(work, struct gud_device, work);
struct iosys_map gem_map = { }, fb_map = { };
struct drm_framebuffer *fb;
struct drm_rect damage;
int idx;
int idx, ret;
if (!drm_dev_enter(&gdrm->drm, &idx))
return;
@ -390,8 +376,21 @@ void gud_flush_work(struct work_struct *work)
if (!fb)
goto out;
gud_flush_damage(gdrm, fb, &damage);
ret = drm_gem_fb_vmap(fb, &gem_map, &fb_map);
if (ret)
goto fb_put;
ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE);
if (ret)
goto vunmap;
/* Imported buffers are assumed to be WriteCombined with uncached reads */
gud_flush_damage(gdrm, fb, &fb_map, !fb->obj[0]->import_attach, &damage);
drm_gem_fb_end_cpu_access(fb, DMA_FROM_DEVICE);
vunmap:
drm_gem_fb_vunmap(fb, &gem_map);
fb_put:
drm_framebuffer_put(fb);
out:
drm_dev_exit(idx);