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Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_mmu.h')
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_mmu.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.h b/drivers/gpu/drm/etnaviv/etnaviv_mmu.h
new file mode 100644
index 000000000000..fff215a47630
--- /dev/null
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2015 Etnaviv Project
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ETNAVIV_MMU_H__
+#define __ETNAVIV_MMU_H__
+
+#include <linux/iommu.h>
+
+enum etnaviv_iommu_version {
+ ETNAVIV_IOMMU_V1 = 0,
+ ETNAVIV_IOMMU_V2,
+};
+
+struct etnaviv_gpu;
+struct etnaviv_vram_mapping;
+
+struct etnaviv_iommu_ops {
+ struct iommu_ops ops;
+ size_t (*dump_size)(struct iommu_domain *);
+ void (*dump)(struct iommu_domain *, void *);
+};
+
+struct etnaviv_iommu {
+ struct etnaviv_gpu *gpu;
+ struct iommu_domain *domain;
+
+ enum etnaviv_iommu_version version;
+
+ /* memory manager for GPU address area */
+ struct mutex lock;
+ struct list_head mappings;
+ struct drm_mm mm;
+ u32 last_iova;
+ bool need_flush;
+};
+
+struct etnaviv_gem_object;
+
+int etnaviv_iommu_attach(struct etnaviv_iommu *iommu, const char **names,
+ int cnt);
+int etnaviv_iommu_map(struct etnaviv_iommu *iommu, u32 iova,
+ struct sg_table *sgt, unsigned len, int prot);
+int etnaviv_iommu_unmap(struct etnaviv_iommu *iommu, u32 iova,
+ struct sg_table *sgt, unsigned len);
+int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu,
+ struct etnaviv_gem_object *etnaviv_obj, u32 memory_base,
+ struct etnaviv_vram_mapping *mapping);
+void etnaviv_iommu_unmap_gem(struct etnaviv_iommu *mmu,
+ struct etnaviv_vram_mapping *mapping);
+void etnaviv_iommu_destroy(struct etnaviv_iommu *iommu);
+
+size_t etnaviv_iommu_dump_size(struct etnaviv_iommu *iommu);
+void etnaviv_iommu_dump(struct etnaviv_iommu *iommu, void *buf);
+
+struct etnaviv_iommu *etnaviv_iommu_new(struct etnaviv_gpu *gpu,
+ struct iommu_domain *domain, enum etnaviv_iommu_version version);
+
+#endif /* __ETNAVIV_MMU_H__ */