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/*
* include/linux/tegra_ion.h
*
* Copyright (C) 2011, NVIDIA Corporation.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#include <linux/types.h>
#include <linux/ion.h>
#if !defined(__KERNEL__)
#define __user
#endif
#ifndef _LINUX_TEGRA_ION_H
#define _LINUX_TEGRA_ION_H
struct tegra_ion_id_data {
struct ion_handle *handle;
unsigned long id;
size_t size;
};
struct tegra_ion_pin_data {
struct ion_handle **handles; /* array of handles to pin/unpin */
unsigned long *addr; /* array pf addresses to return */
unsigned long count; /* number of entries in handles */
};
/* Cache operations. */
enum {
TEGRA_ION_CACHE_OP_WB = 0,
TEGRA_ION_CACHE_OP_INV,
TEGRA_ION_CACHE_OP_WB_INV,
};
struct tegra_ion_cache_maint_data {
unsigned long addr;
struct ion_handle *handle;
size_t len;
unsigned int op;
};
struct tegra_ion_rw_data {
unsigned long addr; /* user pointer*/
struct ion_handle *handle;
unsigned int offset; /* offset into handle mem */
unsigned int elem_size; /* individual atome size */
unsigned int mem_stride; /*delta in bytes between atoms in handle mem*/
unsigned int user_stride; /* delta in bytes between atoms in user */
unsigned int count; /* number of atoms to copy */
};
struct tegra_ion_get_params_data {
struct ion_handle *handle;
size_t size;
unsigned int align;
unsigned int heap;
unsigned long addr;
};
/* Custom Ioctl's. */
enum {
TEGRA_ION_ALLOC_FROM_ID = 0,
TEGRA_ION_GET_ID,
TEGRA_ION_PIN,
TEGRA_ION_UNPIN,
TEGRA_ION_CACHE_MAINT,
TEGRA_ION_READ,
TEGRA_ION_WRITE,
TEGRA_ION_GET_PARAM,
};
/* List of heaps in the system. */
enum {
TEGRA_ION_HEAP_CARVEOUT = 0,
TEGRA_ION_HEAP_IRAM,
TEGRA_ION_HEAP_VPR,
TEGRA_ION_HEAP_IOMMU
};
#endif /* _LINUX_TEGRA_ION_H */
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