From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 06/13] drm/etnaviv: Use sychronized interface of the IOMMU-API Date: Thu, 17 Aug 2017 14:56:29 +0200 Message-ID: <1502974596-23835-7-git-send-email-joro@8bytes.org> References: <1502974596-23835-1-git-send-email-joro@8bytes.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1502974596-23835-1-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Cc: Joerg Roedel , David Airlie , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, etnaviv-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Christian Gmeiner , Russell King , Lucas Stach List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel 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: Lucas Stach Cc: Russell King Cc: Christian Gmeiner Cc: David Airlie Cc: etnaviv-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Cc: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Signed-off-by: Joerg Roedel --- drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c index f103e78..ae0247c 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c @@ -47,7 +47,7 @@ int etnaviv_iommu_map(struct etnaviv_iommu *iommu, u32 iova, VERB("map[%d]: %08x %08x(%zx)", i, iova, pa, bytes); - ret = iommu_map(domain, da, pa, bytes, prot); + ret = iommu_map_sync(domain, da, pa, bytes, prot); if (ret) goto fail; @@ -62,7 +62,7 @@ int etnaviv_iommu_map(struct etnaviv_iommu *iommu, u32 iova, for_each_sg(sgt->sgl, sg, i, j) { size_t bytes = sg_dma_len(sg) + sg->offset; - iommu_unmap(domain, da, bytes); + iommu_unmap_sync(domain, da, bytes); da += bytes; } return ret; @@ -80,7 +80,7 @@ int etnaviv_iommu_unmap(struct etnaviv_iommu *iommu, u32 iova, size_t bytes = sg_dma_len(sg) + sg->offset; size_t unmapped; - unmapped = iommu_unmap(domain, da, bytes); + unmapped = iommu_unmap_sync(domain, da, bytes); if (unmapped < bytes) return unmapped; @@ -338,7 +338,7 @@ int etnaviv_iommu_get_suballoc_va(struct etnaviv_gpu *gpu, dma_addr_t paddr, mutex_unlock(&mmu->lock); return ret; } - ret = iommu_map(mmu->domain, vram_node->start, paddr, size, + ret = iommu_map_sync(mmu->domain, vram_node->start, paddr, size, IOMMU_READ); if (ret < 0) { drm_mm_remove_node(vram_node); @@ -362,7 +362,7 @@ void etnaviv_iommu_put_suballoc_va(struct etnaviv_gpu *gpu, if (mmu->version == ETNAVIV_IOMMU_V2) { mutex_lock(&mmu->lock); - iommu_unmap(mmu->domain,iova, size); + iommu_unmap_sync(mmu->domain,iova, size); drm_mm_remove_node(vram_node); mutex_unlock(&mmu->lock); } -- 2.7.4