1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_mmu.h b/drivers/gpu/drm/msm/msm_mmu.h
new file mode 100644
index 000000000..61ade89d9
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_mmu.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ */
+
+#ifndef __MSM_MMU_H__
+#define __MSM_MMU_H__
+
+#include <linux/iommu.h>
+
+struct msm_mmu_funcs {
+	void (*detach)(struct msm_mmu *mmu);
+	int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
+			size_t len, int prot);
+	int (*unmap)(struct msm_mmu *mmu, uint64_t iova, size_t len);
+	void (*destroy)(struct msm_mmu *mmu);
+};
+
+enum msm_mmu_type {
+	MSM_MMU_GPUMMU,
+	MSM_MMU_IOMMU,
+	MSM_MMU_IOMMU_PAGETABLE,
+};
+
+struct msm_mmu {
+	const struct msm_mmu_funcs *funcs;
+	struct device *dev;
+	int (*handler)(void *arg, unsigned long iova, int flags);
+	void *arg;
+	enum msm_mmu_type type;
+};
+
+static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
+		const struct msm_mmu_funcs *funcs, enum msm_mmu_type type)
+{
+	mmu->dev = dev;
+	mmu->funcs = funcs;
+	mmu->type = type;
+}
+
+struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
+struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
+
+static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
+		int (*handler)(void *arg, unsigned long iova, int flags))
+{
+	mmu->arg = arg;
+	mmu->handler = handler;
+}
+
+struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent);
+
+void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
+		dma_addr_t *tran_error);
+
+
+int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
+		int *asid);
+
+#endif /* __MSM_MMU_H__ */