From 688d54fe9e6814dab9851291250047e0ca6d1a67 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Tue, 25 Sep 2018 18:16:06 +0200 Subject: [PATCH] UPSTREAM: virtio: Support prime objects vmap/vunmap Implement vmap/vunmap so we can export dmabufs to other drivers, such as video4linux. Tested with a virtio-gpu / vivid (virtual capture driver) pipeline, where the vivid driver imports the dmabufs exported by virtio-gpu. Note that dma_buf_vmap() does its own vmap counting, so it's not needed to take care of it in the driver. Signed-off-by: Ezequiel Garcia Link: http://patchwork.freedesktop.org/patch/msgid/20180925161606.17980-4-ezequiel@collabora.com Signed-off-by: Gerd Hoffmann (cherry picked from commit a03fb71716ee60d1d763f1f27773cbbaec1359ed) Signed-off-by: Greg Hartman BUG: 139386237 Change-Id: Icab4912be0e3da5a6fd453eb42894e6a16344ad3 --- drivers/gpu/drm/virtio/virtgpu_prime.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c index d27a1688714f..86ce0ae93f59 100644 --- a/drivers/gpu/drm/virtio/virtgpu_prime.c +++ b/drivers/gpu/drm/virtio/virtgpu_prime.c @@ -55,13 +55,18 @@ struct drm_gem_object *virtgpu_gem_prime_import_sg_table( void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj) { - WARN_ONCE(1, "not implemented"); - return ERR_PTR(-ENODEV); + struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj); + int ret; + + ret = virtio_gpu_object_kmap(bo); + if (ret) + return NULL; + return bo->vmap; } void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) { - WARN_ONCE(1, "not implemented"); + virtio_gpu_object_kunmap(gem_to_virtio_gpu_obj(obj)); } int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,