PageRenderTime 15ms CodeModel.GetById 10ms app.highlight 2ms RepoModel.GetById 1ms app.codeStats 0ms

/Ethereal-msm8939-beta9/arch/mips/include/asm/dsp.h

https://bitbucket.org/MilosStamenkovic95/etherealos
C Header | 85 lines | 65 code | 11 blank | 9 comment | 10 complexity | 5dc4082e2053d9b033f179684dca34ae MD5 | raw file
 1/*
 2 * Copyright (C) 2005 Mips Technologies
 3 * Author: Chris Dearman, chris@mips.com derived from fpu.h
 4 *
 5 * This program is free software; you can redistribute it and/or modify it
 6 * under the terms of the GNU General Public License as published by the
 7 * Free Software Foundation;  either version 2 of the  License, or (at your
 8 * option) any later version.
 9 */
10#ifndef _ASM_DSP_H
11#define _ASM_DSP_H
12
13#include <asm/cpu.h>
14#include <asm/cpu-features.h>
15#include <asm/hazards.h>
16#include <asm/mipsregs.h>
17
18#define DSP_DEFAULT	0x00000000
19#define DSP_MASK	0x3f
20
21#define __enable_dsp_hazard()						\
22do {									\
23	asm("_ehb");							\
24} while (0)
25
26static inline void __init_dsp(void)
27{
28	mthi1(0);
29	mtlo1(0);
30	mthi2(0);
31	mtlo2(0);
32	mthi3(0);
33	mtlo3(0);
34	wrdsp(DSP_DEFAULT, DSP_MASK);
35}
36
37static inline void init_dsp(void)
38{
39	if (cpu_has_dsp)
40		__init_dsp();
41}
42
43#define __save_dsp(tsk)							\
44do {									\
45	tsk->thread.dsp.dspr[0] = mfhi1();				\
46	tsk->thread.dsp.dspr[1] = mflo1();				\
47	tsk->thread.dsp.dspr[2] = mfhi2();				\
48	tsk->thread.dsp.dspr[3] = mflo2();				\
49	tsk->thread.dsp.dspr[4] = mfhi3();				\
50	tsk->thread.dsp.dspr[5] = mflo3();				\
51	tsk->thread.dsp.dspcontrol = rddsp(DSP_MASK);			\
52} while (0)
53
54#define save_dsp(tsk)							\
55do {									\
56	if (cpu_has_dsp)						\
57		__save_dsp(tsk);					\
58} while (0)
59
60#define __restore_dsp(tsk)						\
61do {									\
62	mthi1(tsk->thread.dsp.dspr[0]);					\
63	mtlo1(tsk->thread.dsp.dspr[1]);					\
64	mthi2(tsk->thread.dsp.dspr[2]);					\
65	mtlo2(tsk->thread.dsp.dspr[3]);					\
66	mthi3(tsk->thread.dsp.dspr[4]);					\
67	mtlo3(tsk->thread.dsp.dspr[5]);					\
68	wrdsp(tsk->thread.dsp.dspcontrol, DSP_MASK);			\
69} while (0)
70
71#define restore_dsp(tsk)						\
72do {									\
73	if (cpu_has_dsp)						\
74		__restore_dsp(tsk);					\
75} while (0)
76
77#define __get_dsp_regs(tsk)						\
78({									\
79	if (tsk == current)						\
80		__save_dsp(current);					\
81									\
82	tsk->thread.dsp.dspr;						\
83})
84
85#endif /* _ASM_DSP_H */