diff options
| author | Ariel D'Alessandro <ariel.dalessandro@collabora.com> | 2025-03-24 15:57:56 -0300 |
|---|---|---|
| committer | Steven Price <steven.price@arm.com> | 2025-03-31 12:08:10 +0100 |
| commit | f91e534f4e605caabc6abd61809dd8d6698e7c71 (patch) | |
| tree | 79be5dc1f2aa5e956b25b160796e8b7471549aed | |
| parent | 586831a417c9ffbcac63cf1b53f05d15024fdd56 (diff) | |
drm/panfrost: Set IOMMU_CACHE flag
Panfrost does not support uncached mappings, so flag them properly. Also
flag the pages that are mapped as response to a page fault as cached.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250324185801.168664-2-ariel.dalessandro@collabora.com
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_mmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index 4a0b4bf03f1a..d5c136bb64ec 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -327,7 +327,7 @@ int panfrost_mmu_map(struct panfrost_gem_mapping *mapping) struct drm_gem_object *obj = &shmem->base; struct panfrost_device *pfdev = to_panfrost_device(obj->dev); struct sg_table *sgt; - int prot = IOMMU_READ | IOMMU_WRITE; + int prot = IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE; if (WARN_ON(mapping->active)) return 0; @@ -528,7 +528,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as, goto err_map; mmu_map_sg(pfdev, bomapping->mmu, addr, - IOMMU_WRITE | IOMMU_READ | IOMMU_NOEXEC, sgt); + IOMMU_WRITE | IOMMU_READ | IOMMU_CACHE | IOMMU_NOEXEC, sgt); bomapping->active = true; bo->heap_rss_size += SZ_2M; |