include/arch/arc/v2/aux_regs.h

/*
 * Copyright (c) 2014 Wind River Systems, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file
 * @brief ARCv2 auxiliary registers definitions
 *
 *
 * Definitions for auxiliary registers.
 */

#ifndef _ARC_V2_AUX_REGS__H_
#define _ARC_V2_AUX_REGS__H_

#ifdef __cplusplus
extern "C" {
#endif

#define _ARC_V2_LP_START 0x002
#define _ARC_V2_LP_END 0x003
#define _ARC_V2_STATUS32 0x00a
#define _ARC_V2_STATUS32_P0 0x00b
#define _ARC_V2_AUX_IRQ_CTRL 0x00e
#define _ARC_V2_IC_CTRL 0x011
#define _ARC_V2_TMR0_COUNT 0x021
#define _ARC_V2_TMR0_CONTROL 0x022
#define _ARC_V2_TMR0_LIMIT 0x023
#define _ARC_V2_IRQ_VECT_BASE    0x025
#define _ARC_V2_AUX_IRQ_ACT 0x043
#define _ARC_V2_TMR1_COUNT 0x100
#define _ARC_V2_TMR1_CONTROL 0x101
#define _ARC_V2_TMR1_LIMIT 0x102
#define _ARC_V2_IRQ_PRIO_PEND 0x200
#define _ARC_V2_AUX_IRQ_HINT 0x201
#define _ARC_V2_IRQ_PRIORITY 0x206
#define _ARC_V2_KSTACK_TOP 0x264
#define _ARC_V2_KSTACK_BASE 0x265
#define _ARC_V2_ERET 0x400
#define _ARC_V2_ERSTATUS 0x402
#define _ARC_V2_ECR 0x403
#define _ARC_V2_EFA 0x404
#define _ARC_V2_ICAUSE 0x40a
#define _ARC_V2_IRQ_SELECT 0x40b
#define _ARC_V2_IRQ_ENABLE 0x40c
#define _ARC_V2_IRQ_TRIGGER 0x40d
#define _ARC_V2_IRQ_STATUS 0x40f
#define _ARC_V2_IRQ_PULSE_CANCEL 0x415
#define _ARC_V2_IRQ_PENDING 0x416

/* STATUS32/STATUS32_P0 bits */
#define _ARC_V2_STATUS32_H (1 << 0)
#define _ARC_V2_STATUS32_E(x) ((x) << 1)
#define _ARC_V2_STATUS32_AE_BIT 5
#define _ARC_V2_STATUS32_AE (1 << _ARC_V2_STATUS32_AE_BIT)
#define _ARC_V2_STATUS32_DE (1 << 6)
#define _ARC_V2_STATUS32_U (1 << 7)
#define _ARC_V2_STATUS32_V (1 << 8)
#define _ARC_V2_STATUS32_C (1 << 9)
#define _ARC_V2_STATUS32_N (1 << 10)
#define _ARC_V2_STATUS32_Z (1 << 11)
#define _ARC_V2_STATUS32_L (1 << 12)
#define _ARC_V2_STATUS32_DZ (1 << 13)
#define _ARC_V2_STATUS32_SC_BIT 14
#define _ARC_V2_STATUS32_SC (1 << _ARC_V2_STATUS32_SC_BIT)
#define _ARC_V2_STATUS32_ES (1 << 15)
#define _ARC_V2_STATUS32_RB(x) ((x) << 16)
#define _ARC_V2_STATUS32_IE (1 << 31)

/* exception cause register masks */
#define _ARC_V2_ECR_VECTOR(X) ((X & 0xff0000) >> 16)
#define _ARC_V2_ECR_CODE(X) ((X & 0xff00) >> 8)
#define _ARC_V2_ECR_PARAMETER(X) (X & 0xff)

#ifndef _ASMLANGUAGE
#if defined(__GNUC__)

#include <stdint.h>
#define _arc_v2_aux_reg_read(reg) __builtin_arc_lr((volatile uint32_t)reg)
#define _arc_v2_aux_reg_write(reg, val) __builtin_arc_sr((unsigned int)val, (volatile uint32_t)reg)

#else /* ! __GNUC__ */

#define _arc_v2_aux_reg_read(reg)                                \
	({                                               \
		unsigned int __ret;                      \
		__asm__ __volatile__("       lr %0, [%1]" \
				     : "=r"(__ret)       \
				     : "i"(reg));        \
		__ret;                                   \
	})

#define _arc_v2_aux_reg_write(reg, val)                              \
	({                                                   \
		__asm__ __volatile__("       sr %0, [%1]"    \
				     :                       \
				     : "ir"(val), "i"(reg)); \
	})
#endif /* __GNUC__ */
#endif /* _ASMLANGUAGE */

#ifdef __cplusplus
}
#endif

#endif /* _ARC_V2_AUX_REGS__H_ */