1 files changed, 126 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/dmm_user.h b/arch/arm/plat-omap/include/plat/dmm_user.h
new file mode 100644
index 00000000000..c231314810e
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/dmm_user.h
@@ -0,0 +1,126 @@
+/*
+ * omap dmm user: virtual address space management
+ *
+ * Copyright (C) 2010-2011 Texas Instruments
+ *
+ * Written by Hari Kanigeri <h-kanigeri2@ti.com>
+ *            Ramesh Gupta <grgupta@ti.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.
+ */
+
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/dma-mapping.h>
+
+#ifndef __DMM_USER_MMAP_H
+#define __DMM_USER_MMAP_H
+
+
+#define DMM_IOC_MAGIC		'V'
+
+#define DMM_IOCSETTLBENT	_IO(DMM_IOC_MAGIC, 0)
+#define DMM_IOCMEMMAP		_IO(DMM_IOC_MAGIC, 1)
+#define DMM_IOCMEMUNMAP		_IO(DMM_IOC_MAGIC, 2)
+#define DMM_IOCDATOPA		_IO(DMM_IOC_MAGIC, 3)
+#define DMM_IOCMEMFLUSH		_IO(DMM_IOC_MAGIC, 4)
+#define DMM_IOCMEMINV		_IO(DMM_IOC_MAGIC, 5)
+#define DMM_IOCCREATEPOOL	_IO(DMM_IOC_MAGIC, 6)
+#define DMM_IOCDELETEPOOL	_IO(DMM_IOC_MAGIC, 7)
+#define IOMMU_IOCEVENTREG	_IO(DMM_IOC_MAGIC, 10)
+#define IOMMU_IOCEVENTUNREG	_IO(DMM_IOC_MAGIC, 11)
+
+#define DMM_DA_ANON	0x1
+#define DMM_DA_PHYS	0x2
+#define DMM_DA_USER	0x4
+
+struct iovmm_pool {
+	u32			pool_id;
+	u32			da_begin;
+	u32			da_end;
+	struct gen_pool		*genpool;
+	struct list_head	list;
+};
+
+struct iovmm_pool_info {
+	u32	pool_id;
+	u32	da_begin;
+	u32	da_end;
+	u32	size;
+	u32	flags;
+};
+
+/* used to cache dma mapping information */
+struct device_dma_map_info {
+	/* number of elements requested by us */
+	int	num_pages;
+	/* list of buffers used in this DMA action */
+	struct scatterlist	*sg;
+};
+
+struct dmm_map_info {
+	u32	mpu_addr;
+	u32	*da;
+	u32	num_of_buf;
+	u32	size;
+	u32	pool_id;
+	u32	flags;
+};
+
+struct dmm_dma_info {
+	void	*pva;
+	u32	ul_size;
+	enum dma_data_direction	dir;
+};
+
+struct dmm_map_object {
+	struct list_head	link;
+	u32	da;
+	u32	va;
+	u32	size;
+	u32	num_usr_pgs;
+	struct gen_pool	*gen_pool;
+	struct page	**pages;
+	struct device_dma_map_info	dma_info;
+};
+
+struct iodmm_struct {
+	struct iovmm_device	*iovmm;
+	struct list_head	map_list;
+	u32			pool_id;
+};
+
+struct iovmm_device {
+	/* iommu object which this belongs to */
+	struct iommu		*iommu;
+	const char		*name;
+	/* List of memory pool it manages */
+	struct list_head        mmap_pool;
+	struct mutex		dmm_map_lock;
+	int			minor;
+	struct cdev		cdev;
+	int			refcount;
+};
+
+/* user dmm functions */
+int dmm_user(struct iodmm_struct *obj,  void __user *args);
+
+void user_remove_resources(struct iodmm_struct *obj);
+
+int user_un_map(struct iodmm_struct *obj, const void __user *args);
+
+int proc_begin_dma(struct iodmm_struct *obj, const void __user *args);
+
+int proc_end_dma(struct iodmm_struct *obj, const void __user *args);
+
+int omap_create_dmm_pool(struct iodmm_struct *obj, const void __user *args);
+
+int omap_delete_dmm_pools(struct iodmm_struct *obj);
+
+int program_tlb_entry(struct iodmm_struct *obj, const void __user *args);
+
+int register_mmufault(struct iodmm_struct *obj, const void __user *args);
+
+int unregister_mmufault(struct iodmm_struct *obj, const void __user *args);
+#endif