drivers/staging/media/atomisp/include/hmm/hmm_common.h

/*
 * Support for Medifield PNW Camera Imaging ISP subsystem.
 *
 * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
 *
 * Copyright (c) 2010 Silicon Hive www.siliconhive.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.
 *
 * 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.
 *
 *
 */

#ifndef	__HMM_BO_COMMON_H__
#define	__HMM_BO_COMMON_H__

#define	HMM_BO_NAME	"HMM"

/*
 * some common use micros
 */
#define	var_equal_return(var1, var2, exp, fmt, arg ...)	\
	do { \
		if ((var1) == (var2)) { \
			dev_err(atomisp_dev, \
			fmt, ## arg); \
			return exp;\
		} \
	} while (0)

#define	var_equal_return_void(var1, var2, fmt, arg ...)	\
	do { \
		if ((var1) == (var2)) { \
			dev_err(atomisp_dev, \
			fmt, ## arg); \
			return;\
		} \
	} while (0)

#define	var_equal_goto(var1, var2, label, fmt, arg ...)	\
	do { \
		if ((var1) == (var2)) { \
			dev_err(atomisp_dev, \
			fmt, ## arg); \
			goto label;\
		} \
	} while (0)

#define	var_not_equal_goto(var1, var2, label, fmt, arg ...)	\
	do { \
		if ((var1) != (var2)) { \
			dev_err(atomisp_dev, \
			fmt, ## arg); \
			goto label;\
		} \
	} while (0)

#define	check_null_return(ptr, exp, fmt, arg ...)	\
		var_equal_return(ptr, NULL, exp, fmt, ## arg)

#define	check_null_return_void(ptr, fmt, arg ...)	\
		var_equal_return_void(ptr, NULL, fmt, ## arg)

/* hmm_mem_stat is used to trace the hmm mem used by ISP pipe. The unit is page
 * number.
 *
 * res_size:  reserved mem pool size, being allocated from system at system boot time.
 *		res_size >= res_cnt.
 * sys_size:  system mem pool size, being allocated from system at camera running time.
 *		dyc_size:  dynamic mem pool size.
 *		dyc_thr:   dynamic mem pool high watermark.
 *		dyc_size <= dyc_thr.
 * usr_size:  user ptr mem size.
 *
 * res_cnt:   track the mem allocated from reserved pool at camera running time.
 * tol_cnt:   track the total mem used by ISP pipe at camera running time.
 */
struct _hmm_mem_stat {
	int res_size;
	int sys_size;
	int dyc_size;
	int dyc_thr;
	int usr_size;
	int res_cnt;
	int tol_cnt;
};

extern struct _hmm_mem_stat hmm_mem_stat;

#endif