[PATCH 03/11] drm/gud: Get offset-adjusted mapping from drm_gem_fb_vmap()
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2021-08-03 12:59:38
Also in:
dri-devel, virtualization
Subsystem:
drm driver for generic usb display, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Ruben Wauters, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
Pass the data parameter to drm_gem_fb_vmap() to retrieve pointers to the data. This address is different from the mapping addresses for framebuffers with non-zero offsets. Replaces gud's internal computation. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> --- drivers/gpu/drm/gud/gud_pipe.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/gud/gud_pipe.c b/drivers/gpu/drm/gud/gud_pipe.c
index 6270a1a32a65..b9b0e435ea0f 100644
--- a/drivers/gpu/drm/gud/gud_pipe.c
+++ b/drivers/gpu/drm/gud/gud_pipe.c@@ -153,6 +153,7 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb, struct dma_buf_attachment *import_attach = fb->obj[0]->import_attach; u8 compression = gdrm->compression; struct dma_buf_map map[DRM_FORMAT_MAX_PLANES]; + struct dma_buf_map map_data[DRM_FORMAT_MAX_PLANES]; void *vaddr, *buf; size_t pitch, len; int ret = 0;
@@ -162,11 +163,11 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb, if (len > gdrm->bulk_len) return -E2BIG; - ret = drm_gem_fb_vmap(fb, map, NULL); + ret = drm_gem_fb_vmap(fb, map, map_data); if (ret) return ret; - vaddr = map[0].vaddr + fb->offsets[0]; + vaddr = map_data[0].vaddr; ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE); if (ret)
--
2.32.0