when fd is imported to gem, whether the memory type from exporter is contigous or not should be set to gem flag so that drm-based driver can aware of the memory type.
Signed-off-by: Inki Dae inki.dae@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_dmabuf.c | 27 ++++++++++++++++++++------- 1 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c index 2749092..38544c1 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c @@ -25,6 +25,7 @@
#include "drmP.h" #include "drm.h" +#include "exynos_drm.h" #include "exynos_drm_drv.h" #include "exynos_drm_gem.h"
@@ -186,7 +187,7 @@ struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev, struct exynos_drm_gem_obj *exynos_gem_obj; struct exynos_drm_gem_buf *buffer; struct page *page; - int ret, i = 0; + int ret;
DRM_DEBUG_PRIME("%s\n", __FILE__);
@@ -236,13 +237,25 @@ struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev, }
sgl = sgt->sgl; - buffer->dma_addr = sg_dma_address(sgl);
- while (i < sgt->nents) { - buffer->pages[i] = sg_page(sgl); - buffer->size += sg_dma_len(sgl); - sgl = sg_next(sgl); - i++; + if (sgt->nents == 1) { + buffer->dma_addr = sg_dma_address(sgt->sgl); + buffer->size = sg_dma_len(sgt->sgl); + + /* always physically continuous memory if sgt->nents is 1. */ + exynos_gem_obj->flags |= EXYNOS_BO_CONTIG; + } else { + unsigned int i = 0; + + buffer->dma_addr = sg_dma_address(sgl); + while (i < sgt->nents) { + buffer->pages[i] = sg_page(sgl); + buffer->size += sg_dma_len(sgl); + sgl = sg_next(sgl); + i++; + } + + exynos_gem_obj->flags |= EXYNOS_BO_NONCONTIG; }
exynos_gem_obj->buffer = buffer;