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