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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2015, 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 __IA_CSS_ENV_H
#define __IA_CSS_ENV_H
#include <type_support.h>
#include <linux/stdarg.h> /* va_list */
#include "ia_css_types.h"
#include "ia_css_acc_types.h"
/* @file
* This file contains prototypes for functions that need to be provided to the
* CSS-API host-code by the environment in which the CSS-API code runs.
*/
/* Memory allocation attributes, for use in ia_css_css_mem_env. */
enum ia_css_mem_attr {
IA_CSS_MEM_ATTR_CACHED = 1 << 0,
IA_CSS_MEM_ATTR_ZEROED = 1 << 1,
IA_CSS_MEM_ATTR_PAGEALIGN = 1 << 2,
IA_CSS_MEM_ATTR_CONTIGUOUS = 1 << 3,
};
/* Environment with function pointers for local IA memory allocation.
* This provides the CSS code with environment specific functionality
* for memory allocation of small local buffers such as local data structures.
* This is never expected to allocate more than one page of memory (4K bytes).
*/
struct ia_css_cpu_mem_env {
void (*flush)(struct ia_css_acc_fw *fw);
/** Flush function to flush the cache for given accelerator. */
};
/* Environment with function pointers to access the CSS hardware. This includes
* registers and local memories.
*/
struct ia_css_hw_access_env {
void (*store_8)(hrt_address addr, uint8_t data);
/** Store an 8 bit value into an address in the CSS HW address space.
The address must be an 8 bit aligned address. */
void (*store_16)(hrt_address addr, uint16_t data);
/** Store a 16 bit value into an address in the CSS HW address space.
The address must be a 16 bit aligned address. */
void (*store_32)(hrt_address addr, uint32_t data);
/** Store a 32 bit value into an address in the CSS HW address space.
The address must be a 32 bit aligned address. */
uint8_t (*load_8)(hrt_address addr);
/** Load an 8 bit value from an address in the CSS HW address
space. The address must be an 8 bit aligned address. */
uint16_t (*load_16)(hrt_address addr);
/** Load a 16 bit value from an address in the CSS HW address
space. The address must be a 16 bit aligned address. */
uint32_t (*load_32)(hrt_address addr);
/** Load a 32 bit value from an address in the CSS HW address
space. The address must be a 32 bit aligned address. */
void (*store)(hrt_address addr, const void *data, uint32_t bytes);
/** Store a number of bytes into a byte-aligned address in the CSS HW address space. */
void (*load)(hrt_address addr, void *data, uint32_t bytes);
/** Load a number of bytes from a byte-aligned address in the CSS HW address space. */
};
/* Environment with function pointers to print error and debug messages.
*/
struct ia_css_print_env {
int __printf(1, 0) (*debug_print)(const char *fmt, va_list args);
/** Print a debug message. */
int __printf(1, 0) (*error_print)(const char *fmt, va_list args);
/** Print an error message.*/
};
/* Environment structure. This includes function pointers to access several
* features provided by the environment in which the CSS API is used.
* This is used to run the camera IP in multiple platforms such as Linux,
* Windows and several simulation environments.
*/
struct ia_css_env {
struct ia_css_cpu_mem_env cpu_mem_env; /** local flush. */
struct ia_css_hw_access_env hw_access_env; /** CSS HW access functions */
struct ia_css_print_env print_env; /** Message printing env. */
};
#endif /* __IA_CSS_ENV_H */
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