1 /* $NetBSD: hpcapm_machdep.c,v 1.3 2009/03/18 10:22:29 cegger 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 1.3 2009/03/18 10:22:29 cegger 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 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 _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 90 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 _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