Release 4.14 arch/mips/include/asm/dsp.h

/*
 * Copyright (C) 2005 Mips Technologies
 * Author: Chris Dearman, chris@mips.com derived from fpu.h
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */
#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);
}

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static inline void init_dsp(void)
{
	if (cpu_has_dsp)
		__init_dsp();
}

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#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 */
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Directory: arch/mips/include/asm

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