1 /* $NetBSD: hpcapm_machdep.c,v 1.6 2020/02/17 22:52:18 sevan Exp $ */
2
3 /*
4 * Copyright (c) 2000 Takemura Shin
5 * Copyright (c) 2000-2001 SATO Kazumi
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: hpcapm_machdep.c,v 1.6 2020/02/17 22:52:18 sevan Exp $");
33
34 #include <sys/param.h>
35 #include <sys/device.h>
36 #include <sys/kernel.h>
37 #include <sys/systm.h>
38
39 #include <dev/hpc/apm/apmvar.h>
40
41 #include <machine/bus.h>
42 #include <machine/autoconf.h>
43 #include <machine/config_hook.h>
44 #include <machine/platid.h>
45 #include <machine/platid_mask.h>
46
47 #include "vrip_common.h"
48 #if NVRIP_COMMON > 0
49 #include <hpcmips/vr/vripvar.h>
50 #include <hpcmips/vr/vr_asm.h>
51 #endif
52
53 #include "opt_tx39xx.h"
54 #ifdef TX39XX
55 #include <hpcmips/tx/tx39var.h>
56 #endif
57
58 void
machine_standby(void)59 machine_standby(void)
60 {
61 #if NVRIP_COMMON > 0
62 if (platid_match(&platid, &platid_mask_CPU_MIPS_VR_41XX)) {
63 /*
64 * disable all interrupts except PIU interrupt
65 */
66 vrip_intr_suspend();
67 vrip_splpiu();
68
69 /*
70 * STANDBY instruction puts the CPU into power saving
71 * state until some interrupt occurs.
72 * It sleeps until you push the power button.
73 */
74 __asm(".set noreorder");
75 __asm(".word " ___STRING(VR_OPCODE_STANDBY));
76 __asm("nop");
77 __asm("nop");
78 __asm("nop");
79 __asm("nop");
80 __asm("nop");
81 __asm(".set reorder");
82
83 splhigh();
84 vrip_intr_resume();
85 delay(1000); /* 1msec */
86 }
87 #endif /* NVRIP_COMMON > 0 */
88 }
89
90 void
machine_sleep(void)91 machine_sleep(void)
92 {
93 #if NVRIP_COMMON > 0
94 if (platid_match(&platid, &platid_mask_CPU_MIPS_VR_41XX)) {
95 /*
96 * disable all interrupts except PIU interrupt
97 */
98 vrip_intr_suspend();
99 vrip_splpiu();
100
101 /*
102 * SUSPEND instruction puts the CPU into power saving
103 * state until some interrupt occurs.
104 * It sleeps until you push the power button.
105 */
106 __asm(".set noreorder");
107 __asm(".word " ___STRING(VR_OPCODE_SUSPEND));
108 __asm("nop");
109 __asm("nop");
110 __asm("nop");
111 __asm("nop");
112 __asm("nop");
113 __asm(".set reorder");
114
115 splhigh();
116 vrip_intr_resume();
117 delay(1000); /* 1msec */
118 }
119 #endif /* NVRIP_COMMON > 0 */
120 #ifdef TX39XX
121 if (platid_match(&platid, &platid_mask_CPU_MIPS_TX)) {
122 tx39power_suspend_cpu();
123 }
124 #endif
125 }
126