diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/hive_isp_css_include/memory_access/memory_access.h')
| -rw-r--r-- | drivers/staging/media/atomisp/pci/hive_isp_css_include/memory_access/memory_access.h | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_include/memory_access/memory_access.h b/drivers/staging/media/atomisp/pci/hive_isp_css_include/memory_access/memory_access.h deleted file mode 100644 index dc63ff0c9c6a..000000000000 --- a/drivers/staging/media/atomisp/pci/hive_isp_css_include/memory_access/memory_access.h +++ /dev/null @@ -1,174 +0,0 @@ -/* - * Support for Intel Camera Imaging ISP subsystem. - * Copyright (c) 2015-2017, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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. - */ - -#ifndef __MEMORY_ACCESS_H_INCLUDED__ -#define __MEMORY_ACCESS_H_INCLUDED__ - -/*! - * \brief - * Define the public interface for virtual memory - * access functions. Access types are limited to - * those defined in <stdint.h> - * - * The address representation is private to the system - * and represented as "hrt_vaddress" rather than a - * pointer, as the memory allocation cannot be accessed - * by dereferencing but reaquires load and store access - * functions - * - * The page table selection or virtual memory context; - * The page table base index; Is implicit. This page - * table base index must be set by the implementation - * of the access function - * - * "store" is a transfer to the system - * "load" is a transfer from the system - * - * Allocation properties can be specified by setting - * attributes (see below) in case of multiple physical - * memories the memory ID is encoded on the attribute - * - * Allocations in the same physical memory, but in a - * different (set of) page tables can be shared through - * a page table information mapping function - */ - -#include <type_support.h> -#include "platform_support.h" /* for __func__ */ - -/* - * User provided file that defines the (sub)system address types: - * - hrt_vaddress a type that can hold the (sub)system virtual address range - */ -#include "system_types.h" - -/* - * The MMU base address is a physical address, thus the same type is used - * as for the device base address - */ -#include "device_access.h" - -#include "hmm/hmm.h" - -/*! - * \brief - * Bit masks for specialised allocation functions - * the default is "uncached", "not contiguous", - * "not page aligned" and "not cleared" - * - * Forcing alignment (usually) returns a pointer - * at an alignment boundary that is offset from - * the allocated pointer. Without storing this - * pointer/offset, we cannot free it. The memory - * manager is responsible for the bookkeeping, e.g. - * the allocation function creates a sentinel - * within the allocation referencable from the - * returned pointer/address. - */ -#define MMGR_ATTRIBUTE_MASK 0x000f -#define MMGR_ATTRIBUTE_CACHED 0x0001 -#define MMGR_ATTRIBUTE_CONTIGUOUS 0x0002 -#define MMGR_ATTRIBUTE_PAGEALIGN 0x0004 -#define MMGR_ATTRIBUTE_CLEARED 0x0008 -#define MMGR_ATTRIBUTE_UNUSED 0xfff0 - -/* #define MMGR_ATTRIBUTE_DEFAULT (MMGR_ATTRIBUTE_CACHED) */ -#define MMGR_ATTRIBUTE_DEFAULT 0 - -extern const hrt_vaddress mmgr_NULL; -extern const hrt_vaddress mmgr_EXCEPTION; - -/*! Return the address of an allocation in memory - - \param size[in] Size in bytes of the allocation - \param caller_func[in] Caller function name - \param caller_line[in] Caller function line number - - \return vaddress - */ -hrt_vaddress mmgr_malloc(const size_t size); - -/*! Return the address of a zero initialised allocation in memory - - \param N[in] Horizontal dimension of array - \param size[in] Vertical dimension of array Total size is N*size - - \return vaddress - */ -hrt_vaddress mmgr_calloc(const size_t N, const size_t size); - -/*! Return the address of an allocation in memory - - \param size[in] Size in bytes of the allocation - \param attribute[in] Bit vector specifying the properties - of the allocation including zero initialisation - - \return vaddress - */ - -hrt_vaddress mmgr_alloc_attr(const size_t size, const uint16_t attribute); - -/*! Return the address of a mapped existing allocation in memory - - \param ptr[in] Pointer to an allocation in a different - virtual memory page table, but the same - physical memory - \param size[in] Size of the memory of the pointer - \param attribute[in] Bit vector specifying the properties - of the allocation - \param context Pointer of a context provided by - client/driver for additional parameters - needed by the implementation - \Note - This interface is tentative, limited to the desired function - the actual interface may require furhter parameters - - \return vaddress - */ -hrt_vaddress mmgr_mmap( - const void __user *ptr, - const size_t size, - u16 attribute, - void *context); - -/*! Zero initialise an allocation in memory - - \param vaddr[in] Address of an allocation - \param size[in] Size in bytes of the area to be cleared - - \return none - */ -void mmgr_clear(hrt_vaddress vaddr, const size_t size); - -/*! Read an array of bytes from a virtual memory address - - \param vaddr[in] Address of an allocation - \param data[out] pointer to the destination array - \param size[in] number of bytes to read - - \return none - */ -void mmgr_load(const hrt_vaddress vaddr, void *data, const size_t size); - -/*! Write an array of bytes to device registers or memory in the device - - \param vaddr[in] Address of an allocation - \param data[in] pointer to the source array - \param size[in] number of bytes to write - - \return none - */ -void mmgr_store(const hrt_vaddress vaddr, const void *data, const size_t size); - -#endif /* __MEMORY_ACCESS_H_INCLUDED__ */ |