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drm/rockchip: gem: Convert sg to page

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This make cpu can dump fb data allocated by ION.

Change-Id: I639e7cbbe6957d2bb02e4577805343cdbf5f5bf7
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
This commit is contained in:
Andy Yan
2020-12-16 19:05:17 +08:00
committed by Tao Huang
parent 6aed65b3da
commit afec60b71d
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/rockchip/rockchip_drm_gem.c
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@@ -656,6 +656,7 @@ void rockchip_gem_free_object(struct drm_gem_object *obj)
dma_unmap_sgtable(drm->dev, rk_obj->sgt,
DMA_BIDIRECTIONAL, 0);
}
drm_free_large(rk_obj->pages);
drm_prime_gem_destroy(obj, rk_obj->sgt);
} else {
rockchip_gem_free_buf(rk_obj);
@@ -817,6 +818,21 @@ rockchip_gem_prime_import_sg_table(struct drm_device *drm,
goto err_free_rk_obj;
}
rk_obj->num_pages = rk_obj->base.size >> PAGE_SHIFT;
rk_obj->pages = drm_calloc_large(rk_obj->num_pages, sizeof(*rk_obj->pages));
if (!rk_obj->pages) {
DRM_ERROR("failed to allocate pages.\n");
ret = -ENOMEM;
goto err_free_rk_obj;
}
ret = drm_prime_sg_to_page_addr_arrays(sg, rk_obj->pages, NULL, rk_obj->num_pages);
if (ret < 0) {
DRM_ERROR("invalid sgtable.\n");
drm_free_large(rk_obj->pages);
goto err_free_rk_obj;
}
return &rk_obj->base;
err_free_rk_obj: