Loading...
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2005 Mips Technologies
4 * Author: Chris Dearman, chris@mips.com derived from fpu.h
5 */
6#ifndef _ASM_DSP_H
7#define _ASM_DSP_H
8
9#include <asm/cpu.h>
10#include <asm/cpu-features.h>
11#include <asm/hazards.h>
12#include <asm/mipsregs.h>
13
14#define DSP_DEFAULT 0x00000000
15#define DSP_MASK 0x3f
16
17#define __enable_dsp_hazard() \
18do { \
19 asm("_ehb"); \
20} while (0)
21
22static inline void __init_dsp(void)
23{
24 mthi1(0);
25 mtlo1(0);
26 mthi2(0);
27 mtlo2(0);
28 mthi3(0);
29 mtlo3(0);
30 wrdsp(DSP_DEFAULT, DSP_MASK);
31}
32
33static inline void init_dsp(void)
34{
35 if (cpu_has_dsp)
36 __init_dsp();
37}
38
39#define __save_dsp(tsk) \
40do { \
41 tsk->thread.dsp.dspr[0] = mfhi1(); \
42 tsk->thread.dsp.dspr[1] = mflo1(); \
43 tsk->thread.dsp.dspr[2] = mfhi2(); \
44 tsk->thread.dsp.dspr[3] = mflo2(); \
45 tsk->thread.dsp.dspr[4] = mfhi3(); \
46 tsk->thread.dsp.dspr[5] = mflo3(); \
47 tsk->thread.dsp.dspcontrol = rddsp(DSP_MASK); \
48} while (0)
49
50#define save_dsp(tsk) \
51do { \
52 if (cpu_has_dsp) \
53 __save_dsp(tsk); \
54} while (0)
55
56#define __restore_dsp(tsk) \
57do { \
58 mthi1(tsk->thread.dsp.dspr[0]); \
59 mtlo1(tsk->thread.dsp.dspr[1]); \
60 mthi2(tsk->thread.dsp.dspr[2]); \
61 mtlo2(tsk->thread.dsp.dspr[3]); \
62 mthi3(tsk->thread.dsp.dspr[4]); \
63 mtlo3(tsk->thread.dsp.dspr[5]); \
64 wrdsp(tsk->thread.dsp.dspcontrol, DSP_MASK); \
65} while (0)
66
67#define restore_dsp(tsk) \
68do { \
69 if (cpu_has_dsp) \
70 __restore_dsp(tsk); \
71} while (0)
72
73#define __get_dsp_regs(tsk) \
74({ \
75 if (tsk == current) \
76 __save_dsp(current); \
77 \
78 tsk->thread.dsp.dspr; \
79})
80
81#endif /* _ASM_DSP_H */
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 */