Am 30.11.22 um 20:26 schrieb Noralf Trønnes via B4 Submission Endpoint:
From: Noralf Trønnes <nor...@tronnes.org> 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 <javi...@redhat.com> Signed-off-by: Noralf Trønnes <nor...@tronnes.org>
Reviewed-by: Thomas Zimmermann <tzimmerm...@suse.de>
--- drivers/gpu/drm/gud/gud_pipe.c | 67 +++++++++++++++++++++--------------------- 1 file changed, 33 insertions(+), 34 deletions(-) diff --git a/drivers/gpu/drm/gud/gud_pipe.c b/drivers/gpu/drm/gud/gud_pipe.c index d2af9947494f..98fe8efda4a9 100644 --- a/drivers/gpu/drm/gud/gud_pipe.c +++ b/drivers/gpu/drm/gud/gud_pipe.c @@ -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 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb, 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 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb, 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);
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
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