arch/powerpc/platforms/celleb/beat.c

   1 /*
   2  * Simple routines for Celleb/Beat
   3  *
   4  * (C) Copyright 2006-2007 TOSHIBA CORPORATION
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/init.h>
  23 #include <linux/err.h>
  24 #include <linux/rtc.h>
  25
  26 #include <asm/hvconsole.h>
  27 #include <asm/time.h>
  28
  29 #include "beat_wrapper.h"
  30 #include "beat.h"
  31
  32 void beat_restart(char *cmd)
  33 {
  34         beat_shutdown_logical_partition(1);
  35 }
  36
  37 void beat_power_off(void)
  38 {
  39         beat_shutdown_logical_partition(0);
  40 }
  41
  42 u64 beat_halt_code = 0x1000000000000000UL;
  43
  44 void beat_halt(void)
  45 {
  46         beat_shutdown_logical_partition(beat_halt_code);
  47 }
  48
  49 int beat_set_rtc_time(struct rtc_time *rtc_time)
  50 {
  51         u64 tim;
  52         tim = mktime(rtc_time->tm_year+1900,
  53                      rtc_time->tm_mon+1, rtc_time->tm_mday,
  54                      rtc_time->tm_hour, rtc_time->tm_min, rtc_time->tm_sec);
  55         if (beat_rtc_write(tim))
  56                 return -1;
  57         return 0;
  58 }
  59
  60 void beat_get_rtc_time(struct rtc_time *rtc_time)
  61 {
  62         u64 tim;
  63
  64         if (beat_rtc_read(&tim))
  65                 tim = 0;
  66         to_tm(tim, rtc_time);
  67         rtc_time->tm_year -= 1900;
  68         rtc_time->tm_mon -= 1;
  69 }
  70
  71 #define BEAT_NVRAM_SIZE 4096
  72
  73 ssize_t beat_nvram_read(char *buf, size_t count, loff_t *index)
  74 {
  75         unsigned int i;
  76         unsigned long len;
  77         char *p = buf;
  78
  79         if (*index >= BEAT_NVRAM_SIZE)
  80                 return -ENODEV;
  81         i = *index;
  82         if (i + count > BEAT_NVRAM_SIZE)
  83                 count = BEAT_NVRAM_SIZE - i;
  84
  85         for (; count != 0; count -= len) {
  86                 len = count;
  87                 if (len > BEAT_NVRW_CNT)
  88                         len = BEAT_NVRW_CNT;
  89                 if (beat_eeprom_read(i, len, p)) {
  90                         return -EIO;
  91                 }
  92
  93                 p += len;
  94                 i += len;
  95         }
  96         *index = i;
  97         return p - buf;
  98 }
  99
 100 ssize_t beat_nvram_write(char *buf, size_t count, loff_t *index)
 101 {
 102         unsigned int i;
 103         unsigned long len;
 104         char *p = buf;
 105
 106         if (*index >= BEAT_NVRAM_SIZE)
 107                 return -ENODEV;
 108         i = *index;
 109         if (i + count > BEAT_NVRAM_SIZE)
 110                 count = BEAT_NVRAM_SIZE - i;
 111
 112         for (; count != 0; count -= len) {
 113                 len = count;
 114                 if (len > BEAT_NVRW_CNT)
 115                         len = BEAT_NVRW_CNT;
 116                 if (beat_eeprom_write(i, len, p)) {
 117                         return -EIO;
 118                 }
 119
 120                 p += len;
 121                 i += len;
 122         }
 123         *index = i;
 124         return p - buf;
 125 }
 126
 127 ssize_t beat_nvram_get_size(void)
 128 {
 129         return BEAT_NVRAM_SIZE;
 130 }
 131
 132 int beat_set_xdabr(unsigned long dabr)
 133 {
 134         if (beat_set_dabr(dabr, DABRX_KERNEL | DABRX_USER))
 135                 return -1;
 136         return 0;
 137 }
 138
 139 int64_t beat_get_term_char(u64 vterm, u64 *len, u64 *t1, u64 *t2)
 140 {
 141         u64 db[2];
 142         s64 ret;
 143
 144         ret = beat_get_characters_from_console(vterm, len, (u8*)db);
 145         if (ret == 0) {
 146                 *t1 = db[0];
 147                 *t2 = db[1];
 148         }
 149         return ret;
 150 }
 151
 152 int64_t beat_put_term_char(u64 vterm, u64 len, u64 t1, u64 t2)
 153 {
 154         u64 db[2];
 155
 156         db[0] = t1;
 157         db[1] = t2;
 158         return beat_put_characters_to_console(vterm, len, (u8*)db);
 159 }
 160
 161 EXPORT_SYMBOL(beat_get_term_char);
 162 EXPORT_SYMBOL(beat_put_term_char);
 163 EXPORT_SYMBOL(beat_halt_code);