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