115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
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/*
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* drivers/gpu/ion/ion_priv.h
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*
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* Copyright (C) 2011 Google, Inc.
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* Copyright (c) 2013, The Linux Foundation. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _MSM_ION_PRIV_H
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#define _MSM_ION_PRIV_H
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#include <linux/kref.h>
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#include <linux/mm_types.h>
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#include <linux/mutex.h>
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#include <linux/rbtree.h>
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#include <linux/ion.h>
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#include <linux/iommu.h>
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#include <linux/seq_file.h>
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/**
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* struct mem_map_data - represents information about the memory map for a heap
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* @node: rb node used to store in the tree of mem_map_data
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* @addr: start address of memory region.
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* @addr: end address of memory region.
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* @size: size of memory region
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* @client_name: name of the client who owns this buffer.
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*
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*/
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struct mem_map_data {
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struct rb_node node;
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ion_phys_addr_t addr;
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ion_phys_addr_t addr_end;
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unsigned long size;
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const char *client_name;
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};
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struct ion_heap *ion_iommu_heap_create(struct ion_platform_heap *);
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void ion_iommu_heap_destroy(struct ion_heap *);
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struct ion_heap *ion_cp_heap_create(struct ion_platform_heap *);
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void ion_cp_heap_destroy(struct ion_heap *);
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#ifdef CONFIG_CMA
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struct ion_heap *ion_cma_heap_create(struct ion_platform_heap *);
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void ion_cma_heap_destroy(struct ion_heap *);
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struct ion_heap *ion_secure_cma_heap_create(struct ion_platform_heap *);
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void ion_secure_cma_heap_destroy(struct ion_heap *);
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#endif
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struct ion_heap *ion_removed_heap_create(struct ion_platform_heap *);
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void ion_removed_heap_destroy(struct ion_heap *);
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#define ION_CP_ALLOCATE_FAIL -1
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#define ION_RESERVED_ALLOCATE_FAIL -1
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/**
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* ion_do_cache_op - do cache operations.
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*
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* @client - pointer to ION client.
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* @handle - pointer to buffer handle.
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* @uaddr - virtual address to operate on.
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* @offset - offset from physical address.
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* @len - Length of data to do cache operation on.
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* @cmd - Cache operation to perform:
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* ION_IOC_CLEAN_CACHES
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* ION_IOC_INV_CACHES
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* ION_IOC_CLEAN_INV_CACHES
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*
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* Returns 0 on success
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*/
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int ion_do_cache_op(struct ion_client *client, struct ion_handle *handle,
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void *uaddr, unsigned long offset, unsigned long len,
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unsigned int cmd);
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void ion_cp_heap_get_base(struct ion_heap *heap, unsigned long *base,
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unsigned long *size);
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void ion_mem_map_show(struct ion_heap *heap);
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int ion_secure_handle(struct ion_client *client, struct ion_handle *handle,
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int version, void *data, int flags);
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int ion_unsecure_handle(struct ion_client *client, struct ion_handle *handle);
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int ion_heap_allow_secure_allocation(enum ion_heap_type type);
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int ion_heap_allow_heap_secure(enum ion_heap_type type);
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int ion_heap_allow_handle_secure(enum ion_heap_type type);
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/**
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* ion_create_chunked_sg_table - helper function to create sg table
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* with specified chunk size
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* @buffer_base: The starting address used for the sg dma address
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* @chunk_size: The size of each entry in the sg table
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* @total_size: The total size of the sg table (i.e. the sum of the
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* entries). This will be rounded up to the nearest
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* multiple of `chunk_size'
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*/
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struct sg_table *ion_create_chunked_sg_table(phys_addr_t buffer_base,
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size_t chunk_size, size_t total_size);
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#endif /* _MSM_ION_PRIV_H */
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