265 lines
5.5 KiB
C
265 lines
5.5 KiB
C
/*
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* Simple routines for Celleb/Beat
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*
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* (C) Copyright 2006-2007 TOSHIBA CORPORATION
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/rtc.h>
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#include <linux/interrupt.h>
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#include <linux/irqreturn.h>
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#include <linux/reboot.h>
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#include <asm/hvconsole.h>
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#include <asm/time.h>
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#include <asm/machdep.h>
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#include <asm/firmware.h>
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#include "beat_wrapper.h"
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#include "beat.h"
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#include "beat_interrupt.h"
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static int beat_pm_poweroff_flag;
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void beat_restart(char *cmd)
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{
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beat_shutdown_logical_partition(!beat_pm_poweroff_flag);
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}
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void beat_power_off(void)
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{
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beat_shutdown_logical_partition(0);
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}
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u64 beat_halt_code = 0x1000000000000000UL;
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EXPORT_SYMBOL(beat_halt_code);
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void beat_halt(void)
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{
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beat_shutdown_logical_partition(beat_halt_code);
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}
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int beat_set_rtc_time(struct rtc_time *rtc_time)
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{
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u64 tim;
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tim = mktime(rtc_time->tm_year+1900,
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rtc_time->tm_mon+1, rtc_time->tm_mday,
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rtc_time->tm_hour, rtc_time->tm_min, rtc_time->tm_sec);
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if (beat_rtc_write(tim))
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return -1;
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return 0;
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}
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void beat_get_rtc_time(struct rtc_time *rtc_time)
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{
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u64 tim;
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if (beat_rtc_read(&tim))
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tim = 0;
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to_tm(tim, rtc_time);
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rtc_time->tm_year -= 1900;
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rtc_time->tm_mon -= 1;
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}
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#define BEAT_NVRAM_SIZE 4096
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ssize_t beat_nvram_read(char *buf, size_t count, loff_t *index)
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{
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unsigned int i;
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unsigned long len;
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char *p = buf;
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if (*index >= BEAT_NVRAM_SIZE)
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return -ENODEV;
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i = *index;
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if (i + count > BEAT_NVRAM_SIZE)
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count = BEAT_NVRAM_SIZE - i;
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for (; count != 0; count -= len) {
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len = count;
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if (len > BEAT_NVRW_CNT)
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len = BEAT_NVRW_CNT;
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if (beat_eeprom_read(i, len, p))
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return -EIO;
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p += len;
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i += len;
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}
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*index = i;
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return p - buf;
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}
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ssize_t beat_nvram_write(char *buf, size_t count, loff_t *index)
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{
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unsigned int i;
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unsigned long len;
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char *p = buf;
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if (*index >= BEAT_NVRAM_SIZE)
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return -ENODEV;
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i = *index;
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if (i + count > BEAT_NVRAM_SIZE)
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count = BEAT_NVRAM_SIZE - i;
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for (; count != 0; count -= len) {
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len = count;
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if (len > BEAT_NVRW_CNT)
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len = BEAT_NVRW_CNT;
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if (beat_eeprom_write(i, len, p))
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return -EIO;
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p += len;
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i += len;
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}
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*index = i;
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return p - buf;
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}
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ssize_t beat_nvram_get_size(void)
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{
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return BEAT_NVRAM_SIZE;
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}
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int beat_set_xdabr(unsigned long dabr)
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{
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if (beat_set_dabr(dabr, DABRX_KERNEL | DABRX_USER))
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return -1;
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return 0;
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}
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int64_t beat_get_term_char(u64 vterm, u64 *len, u64 *t1, u64 *t2)
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{
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u64 db[2];
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s64 ret;
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ret = beat_get_characters_from_console(vterm, len, (u8 *)db);
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if (ret == 0) {
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*t1 = db[0];
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*t2 = db[1];
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}
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return ret;
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}
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EXPORT_SYMBOL(beat_get_term_char);
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int64_t beat_put_term_char(u64 vterm, u64 len, u64 t1, u64 t2)
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{
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u64 db[2];
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db[0] = t1;
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db[1] = t2;
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return beat_put_characters_to_console(vterm, len, (u8 *)db);
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}
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EXPORT_SYMBOL(beat_put_term_char);
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void beat_power_save(void)
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{
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beat_pause(0);
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}
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#ifdef CONFIG_KEXEC
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void beat_kexec_cpu_down(int crash, int secondary)
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{
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beatic_deinit_IRQ();
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}
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#endif
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static irqreturn_t beat_power_event(int virq, void *arg)
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{
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printk(KERN_DEBUG "Beat: power button pressed\n");
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beat_pm_poweroff_flag = 1;
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ctrl_alt_del();
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return IRQ_HANDLED;
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}
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static irqreturn_t beat_reset_event(int virq, void *arg)
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{
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printk(KERN_DEBUG "Beat: reset button pressed\n");
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beat_pm_poweroff_flag = 0;
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ctrl_alt_del();
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return IRQ_HANDLED;
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}
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static struct beat_event_list {
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const char *typecode;
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irq_handler_t handler;
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unsigned int virq;
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} beat_event_list[] = {
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{ "power", beat_power_event, 0 },
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{ "reset", beat_reset_event, 0 },
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};
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static int __init beat_register_event(void)
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{
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u64 path[4], data[2];
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int rc, i;
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unsigned int virq;
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for (i = 0; i < ARRAY_SIZE(beat_event_list); i++) {
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struct beat_event_list *ev = &beat_event_list[i];
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if (beat_construct_event_receive_port(data) != 0) {
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printk(KERN_ERR "Beat: "
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"cannot construct event receive port for %s\n",
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ev->typecode);
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return -EINVAL;
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}
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virq = irq_create_mapping(NULL, data[0]);
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if (virq == NO_IRQ) {
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printk(KERN_ERR "Beat: failed to get virtual IRQ"
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" for event receive port for %s\n",
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ev->typecode);
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beat_destruct_event_receive_port(data[0]);
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return -EIO;
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}
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ev->virq = virq;
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rc = request_irq(virq, ev->handler, IRQF_DISABLED,
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ev->typecode, NULL);
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if (rc != 0) {
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printk(KERN_ERR "Beat: failed to request virtual IRQ"
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" for event receive port for %s\n",
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ev->typecode);
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beat_destruct_event_receive_port(data[0]);
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return rc;
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}
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path[0] = 0x1000000065780000ul; /* 1,ex */
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path[1] = 0x627574746f6e0000ul; /* button */
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path[2] = 0;
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strncpy((char *)&path[2], ev->typecode, 8);
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path[3] = 0;
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data[1] = 0;
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beat_create_repository_node(path, data);
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}
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return 0;
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}
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static int __init beat_event_init(void)
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{
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if (!firmware_has_feature(FW_FEATURE_BEAT))
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return -EINVAL;
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beat_pm_poweroff_flag = 0;
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return beat_register_event();
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}
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device_initcall(beat_event_init);
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