resetbtn.c revision 1.2.2.2
1 1.2.2.2 martin /* $NetBSD: resetbtn.c,v 1.2.2.2 2024/02/03 11:47:04 martin Exp $ */ 2 1.2.2.2 martin 3 1.2.2.2 martin /*- 4 1.2.2.2 martin * Copyright (c) 2024 Jared McNeill <jmcneill (at) invisible.ca> 5 1.2.2.2 martin * All rights reserved. 6 1.2.2.2 martin * 7 1.2.2.2 martin * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 martin * modification, are permitted provided that the following conditions 9 1.2.2.2 martin * are met: 10 1.2.2.2 martin * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 martin * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 martin * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 martin * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 martin * documentation and/or other materials provided with the distribution. 15 1.2.2.2 martin * 16 1.2.2.2 martin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.2.2.2 martin * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.2.2.2 martin * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.2.2.2 martin * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.2.2.2 martin * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.2.2.2 martin * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.2.2.2 martin * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.2.2.2 martin * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.2.2.2 martin * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.2.2.2 martin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.2.2.2 martin * SUCH DAMAGE. 27 1.2.2.2 martin */ 28 1.2.2.2 martin 29 1.2.2.2 martin #include <sys/cdefs.h> 30 1.2.2.2 martin __KERNEL_RCSID(0, "$NetBSD: resetbtn.c,v 1.2.2.2 2024/02/03 11:47:04 martin Exp $"); 31 1.2.2.2 martin 32 1.2.2.2 martin #include <sys/param.h> 33 1.2.2.2 martin #include <sys/bus.h> 34 1.2.2.2 martin #include <sys/device.h> 35 1.2.2.2 martin #include <sys/systm.h> 36 1.2.2.2 martin #include <sys/reboot.h> 37 1.2.2.2 martin #include <powerpc/pio.h> 38 1.2.2.2 martin #include <dev/sysmon/sysmonvar.h> 39 1.2.2.2 martin #include <dev/sysmon/sysmon_taskq.h> 40 1.2.2.2 martin 41 1.2.2.2 martin #include "hollywood.h" 42 1.2.2.2 martin 43 1.2.2.2 martin #define PI_INTERRUPT_CAUSE 0x0c003000 44 1.2.2.2 martin #define RESET_SWITCH_STATE __BIT(16) 45 1.2.2.2 martin 46 1.2.2.2 martin static int resetbtn_match(device_t, cfdata_t, void *); 47 1.2.2.2 martin static void resetbtn_attach(device_t, device_t, void *); 48 1.2.2.2 martin 49 1.2.2.2 martin static int resetbtn_intr(void *); 50 1.2.2.2 martin static void resetbtn_task(void *); 51 1.2.2.2 martin 52 1.2.2.2 martin CFATTACH_DECL_NEW(resetbtn, sizeof(struct sysmon_pswitch), 53 1.2.2.2 martin resetbtn_match, resetbtn_attach, NULL, NULL); 54 1.2.2.2 martin 55 1.2.2.2 martin static int 56 1.2.2.2 martin resetbtn_match(device_t parent, cfdata_t cf, void *aux) 57 1.2.2.2 martin { 58 1.2.2.2 martin return 1; 59 1.2.2.2 martin } 60 1.2.2.2 martin 61 1.2.2.2 martin static void 62 1.2.2.2 martin resetbtn_attach(device_t parent, device_t self, void *aux) 63 1.2.2.2 martin { 64 1.2.2.2 martin struct hollywood_attach_args *haa = aux; 65 1.2.2.2 martin struct sysmon_pswitch *smpsw = device_private(self); 66 1.2.2.2 martin int error; 67 1.2.2.2 martin 68 1.2.2.2 martin KASSERT(device_unit(self) == 0); 69 1.2.2.2 martin 70 1.2.2.2 martin aprint_naive("\n"); 71 1.2.2.2 martin aprint_normal(": Reset button\n"); 72 1.2.2.2 martin 73 1.2.2.2 martin sysmon_task_queue_init(); 74 1.2.2.2 martin 75 1.2.2.2 martin smpsw->smpsw_name = device_xname(self); 76 1.2.2.2 martin smpsw->smpsw_type = PSWITCH_TYPE_RESET; 77 1.2.2.2 martin error = sysmon_pswitch_register(smpsw); 78 1.2.2.2 martin if (error != 0) { 79 1.2.2.2 martin aprint_error_dev(self, 80 1.2.2.2 martin "unable to register reset button with sysmon: %d\n", error); 81 1.2.2.2 martin smpsw = NULL; 82 1.2.2.2 martin } 83 1.2.2.2 martin 84 1.2.2.2 martin hollywood_intr_establish(haa->haa_irq, IPL_HIGH, resetbtn_intr, smpsw, 85 1.2.2.2 martin device_xname(self)); 86 1.2.2.2 martin } 87 1.2.2.2 martin 88 1.2.2.2 martin static int 89 1.2.2.2 martin resetbtn_intr(void *arg) 90 1.2.2.2 martin { 91 1.2.2.2 martin struct sysmon_pswitch *smpsw = arg; 92 1.2.2.2 martin 93 1.2.2.2 martin sysmon_task_queue_sched(0, resetbtn_task, smpsw); 94 1.2.2.2 martin 95 1.2.2.2 martin return 1; 96 1.2.2.2 martin } 97 1.2.2.2 martin 98 1.2.2.2 martin static void 99 1.2.2.2 martin resetbtn_task(void *arg) 100 1.2.2.2 martin { 101 1.2.2.2 martin struct sysmon_pswitch *smpsw = arg; 102 1.2.2.2 martin bool pressed; 103 1.2.2.2 martin 104 1.2.2.2 martin pressed = (in32(PI_INTERRUPT_CAUSE) & RESET_SWITCH_STATE) == 0; 105 1.2.2.2 martin 106 1.2.2.2 martin if (smpsw != NULL) { 107 1.2.2.2 martin sysmon_pswitch_event(smpsw, 108 1.2.2.2 martin pressed ? PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); 109 1.2.2.2 martin } else if (!pressed) { 110 1.2.2.2 martin kern_reboot(0, NULL); 111 1.2.2.2 martin } 112 1.2.2.2 martin } 113
Indexes created Wed Oct 22 13:09:56 GMT 2025