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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/include/asm/dsp.h | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/mips/include/asm/dsp.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/mips/include/asm/dsp.h b/arch/mips/include/asm/dsp.h new file mode 100644 index 000000000..77fe0d675 --- /dev/null +++ b/arch/mips/include/asm/dsp.h @@ -0,0 +1,81 @@ +/* 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 */ |