1 files changed, 94 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/include/plat/iovmm.h b/arch/arm/plat-omap/include/plat/iovmm.h
new file mode 100644
index 000000000000..bdc7ce5d7a4a
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/iovmm.h
@@ -0,0 +1,94 @@
+/*
+ * omap iommu: simple virtual address space management
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * 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.
+ */
+
+#ifndef __IOMMU_MMAP_H
+#define __IOMMU_MMAP_H
+
+struct iovm_struct {
+        struct iommu            *iommu; /* iommu object which this belongs to */
+        u32                     da_start; /* area definition */
+        u32                     da_end;
+        u32                     flags; /* IOVMF_: see below */
+        struct list_head        list; /* linked in ascending order */
+        const struct sg_table   *sgt; /* keep 'page' <-> 'da' mapping */
+        void                    *va; /* mpu side mapped address */
+};
+
+/*
+ * IOVMF_FLAGS: attribute for iommu virtual memory area(iovma)
+ *
+ * lower 16 bit is used for h/w and upper 16 bit is for s/w.
+ */
+#define IOVMF_SW_SHIFT          16
+#define IOVMF_HW_SIZE           (1 << IOVMF_SW_SHIFT)
+#define IOVMF_HW_MASK           (IOVMF_HW_SIZE - 1)
+#define IOVMF_SW_MASK           (~IOVMF_HW_MASK)UL
+
+/*
+ * iovma: h/w flags derived from cam and ram attribute
+ */
+#define IOVMF_CAM_MASK          (~((1 << 10) - 1))
+#define IOVMF_RAM_MASK          (~IOVMF_CAM_MASK)
+
+#define IOVMF_PGSZ_MASK         (3 << 0)
+#define IOVMF_PGSZ_1M           MMU_CAM_PGSZ_1M
+#define IOVMF_PGSZ_64K          MMU_CAM_PGSZ_64K
+#define IOVMF_PGSZ_4K           MMU_CAM_PGSZ_4K
+#define IOVMF_PGSZ_16M          MMU_CAM_PGSZ_16M
+
+#define IOVMF_ENDIAN_MASK       (1 << 9)
+#define IOVMF_ENDIAN_BIG        MMU_RAM_ENDIAN_BIG
+#define IOVMF_ENDIAN_LITTLE     MMU_RAM_ENDIAN_LITTLE
+
+#define IOVMF_ELSZ_MASK         (3 << 7)
+#define IOVMF_ELSZ_8            MMU_RAM_ELSZ_8
+#define IOVMF_ELSZ_16           MMU_RAM_ELSZ_16
+#define IOVMF_ELSZ_32           MMU_RAM_ELSZ_32
+#define IOVMF_ELSZ_NONE         MMU_RAM_ELSZ_NONE
+
+#define IOVMF_MIXED_MASK        (1 << 6)
+#define IOVMF_MIXED             MMU_RAM_MIXED
+
+/*
+ * iovma: s/w flags, used for mapping and umapping internally.
+ */
+#define IOVMF_MMIO              (1 << IOVMF_SW_SHIFT)
+#define IOVMF_ALLOC             (2 << IOVMF_SW_SHIFT)
+#define IOVMF_ALLOC_MASK        (3 << IOVMF_SW_SHIFT)
+
+/* "superpages" is supported just with physically linear pages */
+#define IOVMF_DISCONT           (1 << (2 + IOVMF_SW_SHIFT))
+#define IOVMF_LINEAR            (2 << (2 + IOVMF_SW_SHIFT))
+#define IOVMF_LINEAR_MASK       (3 << (2 + IOVMF_SW_SHIFT))
+
+#define IOVMF_DA_FIXED          (1 << (4 + IOVMF_SW_SHIFT))
+#define IOVMF_DA_ANON           (2 << (4 + IOVMF_SW_SHIFT))
+#define IOVMF_DA_MASK           (3 << (4 + IOVMF_SW_SHIFT))
+
+
+extern struct iovm_struct *find_iovm_area(struct iommu *obj, u32 da);
+extern u32 iommu_vmap(struct iommu *obj, u32 da,
+                        const struct sg_table *sgt, u32 flags);
+extern struct sg_table *iommu_vunmap(struct iommu *obj, u32 da);
+extern u32 iommu_vmalloc(struct iommu *obj, u32 da, size_t bytes,
+                           u32 flags);
+extern void iommu_vfree(struct iommu *obj, const u32 da);
+extern u32 iommu_kmap(struct iommu *obj, u32 da, u32 pa, size_t bytes,
+                        u32 flags);
+extern void iommu_kunmap(struct iommu *obj, u32 da);
+extern u32 iommu_kmalloc(struct iommu *obj, u32 da, size_t bytes,
+                           u32 flags);
+extern void iommu_kfree(struct iommu *obj, u32 da);
+
+extern void *da_to_va(struct iommu *obj, u32 da);
+
+#endif /* __IOMMU_MMAP_H */