vordog: vordog.c annotate

annotate vordog.c @ 8:a28764b2a28e

modify selection of timeout for 2^n nanoseconds

author	Thinker K.F. Li <thinker@branda.to>
date	Tue, 08 Jul 2008 17:10:01 +0800
parents	5a281ce7453c
children	b4f4a69ea86a

rev	line source
3 60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	1 /*-
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	2 * Copyright (c) 2008 Kueifong Li <thinker@branda.to>.
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	3 * All rights reserved.
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	4 *
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	5 * Redistribution and use in source and binary forms, with or without
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	6 * modification, are permitted provided that the following conditions
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	7 * are met:
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	8 * 1. Redistributions of source code must retain the above copyright
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	9 * notice, this list of conditions and the following disclaimer.
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	10 * 2. Redistributions in binary form must reproduce the above copyright
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	11 * notice, this list of conditions and the following disclaimer in the
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	12 * documentation and/or other materials provided with the distribution.
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	13 *
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	14 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	16 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	24 * POSSIBILITY OF SUCH DAMAGE.
60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	25 */
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	26 #include <sys/param.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	27 #include <sys/bus.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	28 #include <sys/conf.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	29 #include <sys/kernel.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	30 #include <sys/module.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	31 #include <sys/systm.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	32 #include <sys/proc.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	33 #include <sys/ioccom.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	34 #include <sys/types.h>
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	35 #include <sys/malloc.h>
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	36 #include <sys/watchdog.h>
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	37 #include "vordog.h"
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38
3 60a234c9c03f Add 2-clause BSD license Thinker K.F. Li <thinker@branda.to> parents: 1 diff changeset	39 #if 0
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	40 #undef __FreeBSD_version
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	41 #define __FreeBSD_version 800029
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	42 #endif
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	43
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	44 #define VD_STATUS 0x841
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	45 #define VD_INITVAL 0x84a
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	46 #define VD_CTR 0x84b
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	47 /* trigger PCIRST */
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	48 #define VD_TIMER_RST 0xc
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	50 typedef struct vd_softc {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	51 struct cdev *_cdev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	52 device_t dev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	53 int open_cnt;
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	54 u_int init_val;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	55 eventhandler_tag wd9_tag;
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	56 } *vd_softc_t;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	57
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	58 #define CDEV_2_SOFTC(_cdev) ((_cdev)->si_drv1)
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	59
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	60 static int
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	61 vordog_open(struct cdev dev, int oflags, int devtype, struct thread td) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	62 vd_softc_t sc;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	63
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	64 sc = CDEV_2_SOFTC(dev);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	65 sc->open_cnt++;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	66
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	67 return 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	68 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	69
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	70 static int
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	71 vordog_close(struct cdev dev, int fflag, int devtype, struct thread td) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	72 vd_softc_t sc;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	73
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	74 sc = CDEV_2_SOFTC(dev);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	75 sc->open_cnt--;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	76
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	77 return 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	78 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	79
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	80 static int
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	81 vordog_go_detach(void) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	82 devclass_t vd_dc;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	83 device_t vd_dev, nexus_dev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	84 int r;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	85
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	86 vd_dc = devclass_find("vordog");
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	87 if(vd_dc == NULL)
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	88 return EINVAL;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	89
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	90 vd_dev = devclass_get_device(vd_dc, 0);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	91 if(vd_dev == NULL)
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	92 return EINVAL;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	93
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	94 nexus_dev = device_get_parent(vd_dev);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	95 if(nexus_dev == NULL)
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	96 return EINVAL;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	97
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	98 r = device_delete_child(nexus_dev, vd_dev);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	99 return r;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	100 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	101
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	102 static void
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	103 setup_timer(vordog_cfg_t cfg) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	104 int val;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	105
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	106 val = cfg->init_val & 0xff;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	107 outb(VD_INITVAL, val);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	108 val = 0x80 \| ((cfg->unit & 0x3) << 4) \| VD_TIMER_RST;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	109 outb(VD_CTR, val);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	110 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	111
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	112 static void
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	113 reset_timer(void) {
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	114 outb(VD_STATUS, 0xc0);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	115 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	116
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	117 static void
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	118 disable_timer(void) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	119 outb(VD_CTR, 0);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	120 outb(VD_STATUS, 0xc0);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	121 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123 static int
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	124 vordog_ioctl(struct cdev *dev, u_long cmd, caddr_t data,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	125 int fflag, struct thread *td) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	126 int r = 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	127 vd_softc_t sc;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	128 vordog_cfg_t cfg;
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	129 static const u_int unit_factors[] = {0, 1, 60, 360};
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	130
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	131 sc = CDEV_2_SOFTC(dev);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	132 switch(cmd) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	133 case VDCTL_ENABLE:
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	134 cfg = (vordog_cfg_t)data;
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	135 sc->init_val = (cfg->init_val & 0xff) * unit_factors[cfg->unit];
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	136 setup_timer(cfg);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	137 break;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	138 case VDCTL_RESET:
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	139 reset_timer();
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	140 break;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	141 case VDCTL_DISABLE:
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	142 disable_timer();
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	143 break;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	144 default:
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	145 r = EINVAL;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	146 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	147 return r;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	148 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	149
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	150 struct cdevsw vordog_cdevsw = {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	151 .d_version = D_VERSION,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	152 .d_open = vordog_open,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	153 .d_close = vordog_close,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	154 .d_ioctl = vordog_ioctl,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	155 .d_name = "vordog",
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	156 };
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	157
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	158 /*
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	159 * Implements watchdog(9) compatible driver.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	160 */
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	161 /*! \brief Initialize timer for an interval in specified seconds.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	162 */
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	163 static int
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	164 vordog_wd9_init(u_int timeout) {
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	165 int val;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	166
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	167 if(timeout < 0 \|\| timeout > 255)
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	168 return EINVAL;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	169
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	170 outb(VD_INITVAL, timeout & 0xff);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	171 val = 0x80 \| (VDT_1S << 4) \| VD_TIMER_RST;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	172 outb(VD_CTR, val);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	173 return 0;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	174 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	175
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	176 /*! \brief Reset timer before it is timeout.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	177 *
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	178 * It make the timer reload it's value from initial value register.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	179 */
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	180 static void
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	181 vordog_wd9_reset(void) {
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	182 outb(VD_STATUS, 0xc0);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	183 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	184
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	185 /*! \brief Stop counting of watchdog timer.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	186 */
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	187 static void
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	188 vordog_wd9_disable(void) {
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	189 outb(VD_CTR, 0);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	190 outb(VD_STATUS, 0xc0);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	191 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	192
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	193 /*! \brief event handler for watchdog(9).
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	194 *
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	195 * Timeout interval of watchdog(9) is defined by power of 2 nanoseconds.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	196 * Watchdog timer of Vortex86 provides only small range of intervals.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	197 * We use only the timer in seconds to simplize the code. It provides
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	198 * interval 1~255 seconds.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	199 *
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	200 * Since, only SFTMR1_STS is work, in my experience, and it is triggered
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	201 * after 4 times of initial value. So, it only (i * 4) seconds in range
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	202 * of 4 ~ (255 * 4), where i is one of positive integer, are supported.
5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	203 *
8 a28764b2a28e modify selection of timeout for 2^n nanoseconds Thinker K.F. Li <thinker@branda.to> parents: 7 diff changeset	204 * The supported time intervals of watchdog(9) are 2^32~2^39 nanoseconds.
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	205 * vordog used a (i * 4) seconds for 2^n seconds while i * 4 seconds is
8 a28764b2a28e modify selection of timeout for 2^n nanoseconds Thinker K.F. Li <thinker@branda.to> parents: 7 diff changeset	206 * closest to 2^n nanoseconds. The variances between i * 4 seconds and
a28764b2a28e modify selection of timeout for 2^n nanoseconds Thinker K.F. Li <thinker@branda.to> parents: 7 diff changeset	207 * 2^n nanoseconds are less than 7% (6.8678%).
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	208 */
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	209 static void
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	210 vordog_wd9_evh(void priv_data, u_int cmd, int error) {
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	211 vd_softc_t sc;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	212 u_int timeout, u;
8 a28764b2a28e modify selection of timeout for 2^n nanoseconds Thinker K.F. Li <thinker@branda.to> parents: 7 diff changeset	213 /* 2^32, 2^33, ..., 2^39 nanoseconds */
a28764b2a28e modify selection of timeout for 2^n nanoseconds Thinker K.F. Li <thinker@branda.to> parents: 7 diff changeset	214 static const int timeouts[] = { 1, 2, 4, 9, 17, 34, 69, 137};
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	215
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	216 sc = (vd_softc_t)priv_data;
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	217
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	218 u = cmd & WD_INTERVAL;
8 a28764b2a28e modify selection of timeout for 2^n nanoseconds Thinker K.F. Li <thinker@branda.to> parents: 7 diff changeset	219 if(u < 32 \|\| u > 39) {
7 5a281ce7453c Add comments Thinker K.F. Li <thinker@branda.to> parents: 6 diff changeset	220 /* Out of range! Can not be configured. */
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	221 vordog_wd9_disable();
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	222 sc->init_val = 0;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	223 return;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	224 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	225
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	226 timeout = timeouts[u - 31];
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	227 if(timeout != sc->init_val) {
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	228 vordog_wd9_init(timeout);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	229 sc->init_val = timeout;
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	230 } else {
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	231 vordog_wd9_reset();
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	232 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	233 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	234
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	235 static void
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	236 vordog_wd9_register(vd_softc_t sc) {
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	237 sc->wd9_tag = \
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	238 EVENTHANDLER_REGISTER(watchdog_list, vordog_wd9_evh, sc, 0);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	239 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	240
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	241 static void
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	242 vordog_wd9_unregister(vd_softc_t sc) {
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	243 EVENTHANDLER_DEREGISTER(watchdog_list, sc->wd9_tag);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	244 }
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	245
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	246
5 e59963b503cb Remove tedious messages. Thinker K.F. Li <thinker@branda.to> parents: 3 diff changeset	247 /* Following implements a new bus device.
e59963b503cb Remove tedious messages. Thinker K.F. Li <thinker@branda.to> parents: 3 diff changeset	248 * It is attached under nexus bus, an on board device as `vordog0'.
e59963b503cb Remove tedious messages. Thinker K.F. Li <thinker@branda.to> parents: 3 diff changeset	249 */
e59963b503cb Remove tedious messages. Thinker K.F. Li <thinker@branda.to> parents: 3 diff changeset	250
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	251 static void vordog_identify(driver_t *driver, device_t parent) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	252 device_t vordog;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	253
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	254 /* make sure vordog device is not in the bus. */
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	255 vordog = device_find_child(parent, "vordog", 0);
1 0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	256 if(vordog != NULL)
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	257 return;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	258 vordog = BUS_ADD_CHILD(parent, 10, "vordog", 0);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	259 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	260
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	261 static int vordog_probe(device_t dev) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	262 int b;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	263
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	264 b = inb(VD_INITVAL);
1 0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	265 if(b != 0)
0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	266 return EINVAL;
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	267 b = inb(VD_CTR);
1 0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	268 if(b != 0)
0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	269 return EINVAL;
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	270 b = inb(VD_STATUS);
1 0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	271 if(b != 0)
0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	272 return EINVAL;
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	273 return 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	274 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	275
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	276 static int vordog_attach(device_t dev) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	277 vd_softc_t sc;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	278 struct cdev *_cdev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	279
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	280 sc = (vd_softc_t)malloc(sizeof(struct vd_softc), M_TEMP, M_WAITOK);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	281 if(sc == NULL)
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	282 return ENOMEM;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	283
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	284 _cdev = make_dev(&vordog_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "vordog0");
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	285 if(_cdev == NULL) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	286 free(sc, M_TEMP);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	287 return EINVAL;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	288 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	289
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	290 sc->_cdev = _cdev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	291 sc->dev = dev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	292
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	293 device_set_softc(dev, sc);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	294 CDEV_2_SOFTC(_cdev) = sc;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	295
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	296 sc->open_cnt = 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	297 sc->init_val = 0;
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	298 sc->wd9_tag = NULL;
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	299
1 0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	300 device_set_desc(dev, "Watchdog of Vortex86 SoC");
0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	301 device_printf(dev, "<Vortex86 SoC watchdog> at port 0x%x\n", VD_STATUS);
0b9854adb86c Remove tedious messages and daemonize vd_watchdog. Thinker K.F. Li <thinker@branda.to> parents: 0 diff changeset	302
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	303 vordog_wd9_register(sc);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	304
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	305 return 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	306 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	307
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	308 static int vordog_detach(device_t dev) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	309 vd_softc_t sc;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	310 struct cdev *_cdev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	311
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	312 sc = device_get_softc(dev);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	313 if(sc->open_cnt != 0)
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	314 return EBUSY;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	315
6 76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	316 disable_timer();
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	317
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	318 vordog_wd9_unregister(sc);
76ce6e6624b8 Make vordog compatible with watchdog(9). Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	319
0 71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	320 _cdev = sc->_cdev;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	321
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	322 destroy_dev(_cdev);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	323
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	324 free(sc, M_TEMP);
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	325
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	326 return 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	327 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	328
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	329 static device_method_t vordog_methods[] = {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	330 DEVMETHOD(device_identify, vordog_identify),
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	331 DEVMETHOD(device_probe, vordog_probe),
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	332 DEVMETHOD(device_attach, vordog_attach),
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	333 DEVMETHOD(device_detach, vordog_detach),
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	334 {0, 0}
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	335 };
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	336
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	337 static driver_t vordog_driver = {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	338 "vordog",
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	339 vordog_methods,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	340 0,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	341 };
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	342
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	343 static int
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	344 vordog_evh(module_t mod, int cmd, void *arg) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	345 int r = 0;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	346
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	347 switch(cmd) {
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	348 case MOD_LOAD:
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	349 break;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	350 case MOD_UNLOAD:
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	351 vordog_go_detach(); /* remove device from parent */
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	352 break;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	353 case MOD_SHUTDOWN:
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	354 break;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	355 default:
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	356 r = EINVAL;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	357 break;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	358 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	359 return r;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	360 }
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	361
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	362 static devclass_t vordog_devclass;
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	363
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	364 DRIVER_MODULE(vordog, nexus, vordog_driver, vordog_devclass,
71475f5afa92 Watchdog for Vortex86 6071 on FreeBSD Thinker K.F. Li <thinker@branda.to> parents: diff changeset	365 vordog_evh, NULL);

Mercurial > vordog

annotate vordog.c @ 8:a28764b2a28e