Release 4.12 drivers/staging/ccree/cc_regs.h
/*
* Copyright (C) 2012-2017 ARM Limited or its affiliates.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*!
* @file
* @brief This file contains macro definitions for accessing ARM TrustZone CryptoCell register space.
*/
#ifndef _CC_REGS_H_
#define _CC_REGS_H_
#include "cc_bitops.h"
/* Register Offset macro */
#define CC_REG_OFFSET(unit_name, reg_name) \
(DX_BASE_ ## unit_name + DX_ ## reg_name ## _REG_OFFSET)
#define CC_REG_BIT_SHIFT(reg_name, field_name) \
(DX_ ## reg_name ## _ ## field_name ## _BIT_SHIFT)
/* Register Offset macros (from registers base address in host) */
#include "dx_reg_base_host.h"
/* Read-Modify-Write a field of a register */
#define MODIFY_REGISTER_FLD(unitName, regName, fldName, fldVal) \
do { \
uint32_t regVal; \
regVal = READ_REGISTER(CC_REG_ADDR(unitName, regName)); \
CC_REG_FLD_SET(unitName, regName, fldName, regVal, fldVal); \
WRITE_REGISTER(CC_REG_ADDR(unitName, regName), regVal); \
} while (0)
/* Registers address macros for ENV registers (development FPGA only) */
#ifdef DX_BASE_ENV_REGS
/* This offset should be added to mapping address of DX_BASE_ENV_REGS */
#define CC_ENV_REG_OFFSET(reg_name) (DX_ENV_ ## reg_name ## _REG_OFFSET)
#endif /*DX_BASE_ENV_REGS*/
/*! Bit fields get */
#define CC_REG_FLD_GET(unit_name, reg_name, fld_name, reg_val) \
(DX_ ## reg_name ## _ ## fld_name ## _BIT_SIZE == 0x20 ? \
reg_val /*!< \internal Optimization for 32b fields */ : \
BITFIELD_GET(reg_val, DX_ ## reg_name ## _ ## fld_name ## _BIT_SHIFT, \
DX_ ## reg_name ## _ ## fld_name ## _BIT_SIZE))
/*! Bit fields access */
#define CC_REG_FLD_GET2(unit_name, reg_name, fld_name, reg_val) \
(CC_ ## reg_name ## _ ## fld_name ## _BIT_SIZE == 0x20 ? \
reg_val /*!< \internal Optimization for 32b fields */ : \
BITFIELD_GET(reg_val, CC_ ## reg_name ## _ ## fld_name ## _BIT_SHIFT, \
CC_ ## reg_name ## _ ## fld_name ## _BIT_SIZE))
/* yael TBD !!! - *
* all HW includes should start with CC_ and not DX_ !! */
/*! Bit fields set */
#define CC_REG_FLD_SET( \
unit_name, reg_name, fld_name, reg_shadow_var, new_fld_val) \
do { \
if (DX_ ## reg_name ## _ ## fld_name ## _BIT_SIZE == 0x20) \
reg_shadow_var = new_fld_val; /*!< \internal Optimization for 32b fields */\
else \
BITFIELD_SET(reg_shadow_var, \
DX_ ## reg_name ## _ ## fld_name ## _BIT_SHIFT, \
DX_ ## reg_name ## _ ## fld_name ## _BIT_SIZE, \
new_fld_val); \
} while (0)
/*! Bit fields set */
#define CC_REG_FLD_SET2( \
unit_name, reg_name, fld_name, reg_shadow_var, new_fld_val) \
do { \
if (CC_ ## reg_name ## _ ## fld_name ## _BIT_SIZE == 0x20) \
reg_shadow_var = new_fld_val; /*!< \internal Optimization for 32b fields */\
else \
BITFIELD_SET(reg_shadow_var, \
CC_ ## reg_name ## _ ## fld_name ## _BIT_SHIFT, \
CC_ ## reg_name ## _ ## fld_name ## _BIT_SIZE, \
new_fld_val); \
} while (0)
/* Usage example:
uint32_t reg_shadow = READ_REGISTER(CC_REG_ADDR(CRY_KERNEL,AES_CONTROL));
CC_REG_FLD_SET(CRY_KERNEL,AES_CONTROL,NK_KEY0,reg_shadow, 3);
CC_REG_FLD_SET(CRY_KERNEL,AES_CONTROL,NK_KEY1,reg_shadow, 1);
WRITE_REGISTER(CC_REG_ADDR(CRY_KERNEL,AES_CONTROL), reg_shadow);
*/
#endif /*_CC_REGS_H_*/
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