hpcapm_machdep.c revision 1.1 
1/*	$NetBSD: hpcapm_machdep.c,v 1.1 2004/07/03 12:54:34 uch 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 1.1 2004/07/03 12:54:34 uch 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
58void
59machine_standby()
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		_spllower(~MIPS_INT_MASK_0);
68
69		/*
70		 * STANDBY instruction puts the CPU into power saveing
71		 * state until some interrupt occuer.
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
90void
91machine_sleep()
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		 _spllower(~MIPS_INT_MASK_0);
100
101		 /*
102		  * SUSPEND instruction puts the CPU into power saveing
103		  * state until some interrupt occuer.
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