diff options
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_mmu.c')
-rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c index 69ea0a0a70c2..98c84ef862c7 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c @@ -319,9 +319,49 @@ void etnaviv_iommu_restore(struct etnaviv_gpu *gpu) u32 etnaviv_iommu_get_cmdbuf_va(struct etnaviv_gpu *gpu, struct etnaviv_cmdbuf *buf) { - return buf->paddr - gpu->memory_base; + struct etnaviv_iommu *mmu = gpu->mmu; + + if (mmu->version == ETNAVIV_IOMMU_V1) { + return buf->paddr - gpu->memory_base; + } else { + int ret; + + if (buf->vram_node.allocated) + return (u32)buf->vram_node.start; + + mutex_lock(&mmu->lock); + ret = etnaviv_iommu_find_iova(mmu, &buf->vram_node, buf->size); + if (ret < 0) { + mutex_unlock(&mmu->lock); + return 0; + } + ret = iommu_map(mmu->domain, buf->vram_node.start, buf->paddr, + buf->size, IOMMU_READ); + if (ret < 0) { + drm_mm_remove_node(&buf->vram_node); + mutex_unlock(&mmu->lock); + return 0; + } + mmu->last_iova = buf->vram_node.start + buf->size; + gpu->mmu->need_flush = true; + mutex_unlock(&mmu->lock); + + return (u32)buf->vram_node.start; + } } +void etnaviv_iommu_put_cmdbuf_va(struct etnaviv_gpu *gpu, + struct etnaviv_cmdbuf *buf) +{ + struct etnaviv_iommu *mmu = gpu->mmu; + + if (mmu->version == ETNAVIV_IOMMU_V2 && buf->vram_node.allocated) { + mutex_lock(&mmu->lock); + iommu_unmap(mmu->domain, buf->vram_node.start, buf->size); + drm_mm_remove_node(&buf->vram_node); + mutex_unlock(&mmu->lock); + } +} size_t etnaviv_iommu_dump_size(struct etnaviv_iommu *iommu) { struct etnaviv_iommu_ops *ops; |