Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 09/13] drm/rockchip: Use sychronized interface of the IOMMU-API | Date | Thu, 17 Aug 2017 14:56:32 +0200 |
| |
From: Joerg Roedel <jroedel@suse.de>
The map and unmap functions of the IOMMU-API changed their semantics: They do no longer guarantee that the hardware TLBs are synchronized with the page-table updates they made.
To make conversion easier, new synchronized functions have been introduced which give these guarantees again until the code is converted to use the new TLB-flush interface of the IOMMU-API, which allows certain optimizations.
But for now, just convert this code to use the synchronized functions so that it will behave as before.
Cc: Mark Yao <mark.yao@rock-chips.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Signed-off-by: Joerg Roedel <jroedel@suse.de> --- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c index b74ac71..6d28224 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -41,8 +41,8 @@ static int rockchip_gem_iommu_map(struct rockchip_gem_object *rk_obj) rk_obj->dma_addr = rk_obj->mm.start; - ret = iommu_map_sg(private->domain, rk_obj->dma_addr, rk_obj->sgt->sgl, - rk_obj->sgt->nents, prot); + ret = iommu_map_sg_sync(private->domain, rk_obj->dma_addr, + rk_obj->sgt->sgl, rk_obj->sgt->nents, prot); if (ret < rk_obj->base.size) { DRM_ERROR("failed to map buffer: size=%zd request_size=%zd\n", ret, rk_obj->base.size); @@ -67,7 +67,7 @@ static int rockchip_gem_iommu_unmap(struct rockchip_gem_object *rk_obj) struct drm_device *drm = rk_obj->base.dev; struct rockchip_drm_private *private = drm->dev_private; - iommu_unmap(private->domain, rk_obj->dma_addr, rk_obj->size); + iommu_unmap_sync(private->domain, rk_obj->dma_addr, rk_obj->size); mutex_lock(&private->mm_lock); -- 2.7.4
| |