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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2005 Mips Technologies
* Author: Chris Dearman, chris@mips.com derived from fpu.h
*/
#ifndef _ASM_DSP_H
#define _ASM_DSP_H
#include <asm/cpu.h>
#include <asm/cpu-features.h>
#include <asm/hazards.h>
#include <asm/mipsregs.h>
#define DSP_DEFAULT 0x00000000
#define DSP_MASK 0x3f
#define __enable_dsp_hazard() \
do { \
asm("_ehb"); \
} while (0)
static inline void __init_dsp(void)
{
mthi1(0);
mtlo1(0);
mthi2(0);
mtlo2(0);
mthi3(0);
mtlo3(0);
wrdsp(DSP_DEFAULT, DSP_MASK);
}
static inline void init_dsp(void)
{
if (cpu_has_dsp)
__init_dsp();
}
#define __save_dsp(tsk) \
do { \
tsk->thread.dsp.dspr[0] = mfhi1(); \
tsk->thread.dsp.dspr[1] = mflo1(); \
tsk->thread.dsp.dspr[2] = mfhi2(); \
tsk->thread.dsp.dspr[3] = mflo2(); \
tsk->thread.dsp.dspr[4] = mfhi3(); \
tsk->thread.dsp.dspr[5] = mflo3(); \
tsk->thread.dsp.dspcontrol = rddsp(DSP_MASK); \
} while (0)
#define save_dsp(tsk) \
do { \
if (cpu_has_dsp) \
__save_dsp(tsk); \
} while (0)
#define __restore_dsp(tsk) \
do { \
mthi1(tsk->thread.dsp.dspr[0]); \
mtlo1(tsk->thread.dsp.dspr[1]); \
mthi2(tsk->thread.dsp.dspr[2]); \
mtlo2(tsk->thread.dsp.dspr[3]); \
mthi3(tsk->thread.dsp.dspr[4]); \
mtlo3(tsk->thread.dsp.dspr[5]); \
wrdsp(tsk->thread.dsp.dspcontrol, DSP_MASK); \
} while (0)
#define restore_dsp(tsk) \
do { \
if (cpu_has_dsp) \
__restore_dsp(tsk); \
} while (0)
#define __get_dsp_regs(tsk) \
({ \
if (tsk == current) \
__save_dsp(current); \
\
tsk->thread.dsp.dspr; \
})
#endif /* _ASM_DSP_H */