Messages in this thread Patch in this message | | | 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 |
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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: Lucas Stach <l.stach@pengutronix.de> Cc: Russell King <linux+etnaviv@armlinux.org.uk> Cc: Christian Gmeiner <christian.gmeiner@gmail.com> Cc: David Airlie <airlied@linux.ie> Cc: etnaviv@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Joerg Roedel <jroedel@suse.de> --- 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
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