diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c index d62125eb30d85..69ea0a0a70c29 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c @@ -103,41 +103,21 @@ static void etnaviv_iommu_remove_mapping(struct etnaviv_iommu *mmu, drm_mm_remove_node(&mapping->vram_node); } -int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu, - struct etnaviv_gem_object *etnaviv_obj, u32 memory_base, - struct etnaviv_vram_mapping *mapping) +static int etnaviv_iommu_find_iova(struct etnaviv_iommu *mmu, + struct drm_mm_node *node, size_t size) { struct etnaviv_vram_mapping *free = NULL; - struct sg_table *sgt = etnaviv_obj->sgt; - struct drm_mm_node *node; int ret; - lockdep_assert_held(&etnaviv_obj->lock); - - mutex_lock(&mmu->lock); + lockdep_assert_held(&mmu->lock); - /* v1 MMU can optimize single entry (contiguous) scatterlists */ - if (mmu->version == ETNAVIV_IOMMU_V1 && - sgt->nents == 1 && !(etnaviv_obj->flags & ETNA_BO_FORCE_MMU)) { - u32 iova; - - iova = sg_dma_address(sgt->sgl) - memory_base; - if (iova < 0x80000000 - sg_dma_len(sgt->sgl)) { - mapping->iova = iova; - list_add_tail(&mapping->mmu_node, &mmu->mappings); - mutex_unlock(&mmu->lock); - return 0; - } - } - - node = &mapping->vram_node; while (1) { struct etnaviv_vram_mapping *m, *n; struct list_head list; bool found; ret = drm_mm_insert_node_in_range(&mmu->mm, node, - etnaviv_obj->base.size, 0, mmu->last_iova, ~0UL, + size, 0, mmu->last_iova, ~0UL, DRM_MM_SEARCH_DEFAULT); if (ret != -ENOSPC) @@ -154,7 +134,7 @@ int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu, } /* Try to retire some entries */ - drm_mm_init_scan(&mmu->mm, etnaviv_obj->base.size, 0, 0); + drm_mm_init_scan(&mmu->mm, size, 0, 0); found = 0; INIT_LIST_HEAD(&list); @@ -215,6 +195,38 @@ int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu, mmu->need_flush = true; } + return ret; +} + +int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu, + struct etnaviv_gem_object *etnaviv_obj, u32 memory_base, + struct etnaviv_vram_mapping *mapping) +{ + struct sg_table *sgt = etnaviv_obj->sgt; + struct drm_mm_node *node; + int ret; + + lockdep_assert_held(&etnaviv_obj->lock); + + mutex_lock(&mmu->lock); + + /* v1 MMU can optimize single entry (contiguous) scatterlists */ + if (mmu->version == ETNAVIV_IOMMU_V1 && + sgt->nents == 1 && !(etnaviv_obj->flags & ETNA_BO_FORCE_MMU)) { + u32 iova; + + iova = sg_dma_address(sgt->sgl) - memory_base; + if (iova < 0x80000000 - sg_dma_len(sgt->sgl)) { + mapping->iova = iova; + list_add_tail(&mapping->mmu_node, &mmu->mappings); + mutex_unlock(&mmu->lock); + return 0; + } + } + + node = &mapping->vram_node; + + ret = etnaviv_iommu_find_iova(mmu, node, etnaviv_obj->base.size); if (ret < 0) { mutex_unlock(&mmu->lock); return ret;