diff options
Diffstat (limited to 'arch/ia64/sn/io/efi-rtc.c')
| -rw-r--r-- | arch/ia64/sn/io/efi-rtc.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/arch/ia64/sn/io/efi-rtc.c b/arch/ia64/sn/io/efi-rtc.c deleted file mode 100644 index b0e12fe47dd4be..00000000000000 --- a/arch/ia64/sn/io/efi-rtc.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2001 Silicon Graphics, Inc. - * Copyright (C) 2001 by Ralf Baechle - */ -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/spinlock.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/errno.h> -#include <linux/efi.h> -#include <asm/sn/klclock.h> - -/* - * No locking necessary when this is called from efirtc which protects us - * from racing by efi_rtc_lock. - */ -#define __swizzle(addr) ((u8 *)((unsigned long)(addr) ^ 3)) -#define read_io_port(addr) (*(volatile u8 *) __swizzle(addr)) -#define write_io_port(addr, data) (*(volatile u8 *) __swizzle(addr) = (data)) - -#define TOD_SGS_M48T35 1 -#define TOD_DALLAS_DS1386 2 - -static unsigned long nvram_base = 0; -static int tod_chip_type; - -static int -get_tod_chip_type(void) -{ - unsigned char testval; - - write_io_port(RTC_DAL_CONTROL_ADDR, RTC_DAL_UPDATE_DISABLE); - write_io_port(RTC_DAL_DAY_ADDR, 0xff); - write_io_port(RTC_DAL_CONTROL_ADDR, RTC_DAL_UPDATE_ENABLE); - - testval = read_io_port(RTC_DAL_DAY_ADDR); - if (testval == 0xff) - return TOD_SGS_M48T35; - - return TOD_DALLAS_DS1386; -} - -efi_status_t -ioc3_get_time(efi_time_t *time, efi_time_cap_t *caps) -{ - if (!nvram_base) { - printk(KERN_CRIT "nvram_base is zero\n"); - return EFI_UNSUPPORTED; - } - - memset(time, 0, sizeof(*time)); - - switch (tod_chip_type) { - case TOD_SGS_M48T35: - write_io_port(RTC_SGS_CONTROL_ADDR, RTC_SGS_READ_PROTECT); - - time->year = BCD_TO_INT(read_io_port(RTC_SGS_YEAR_ADDR)) + YRREF; - time->month = BCD_TO_INT(read_io_port(RTC_SGS_MONTH_ADDR)); - time->day = BCD_TO_INT(read_io_port(RTC_SGS_DATE_ADDR)); - time->hour = BCD_TO_INT(read_io_port(RTC_SGS_HOUR_ADDR)); - time->minute = BCD_TO_INT(read_io_port(RTC_SGS_MIN_ADDR)); - time->second = BCD_TO_INT(read_io_port(RTC_SGS_SEC_ADDR)); - time->nanosecond = 0; - - write_io_port(RTC_SGS_CONTROL_ADDR, 0); - break; - - case TOD_DALLAS_DS1386: - write_io_port(RTC_DAL_CONTROL_ADDR, RTC_DAL_UPDATE_DISABLE); - - time->nanosecond = 0; - time->second = BCD_TO_INT(read_io_port(RTC_DAL_SEC_ADDR)); - time->minute = BCD_TO_INT(read_io_port(RTC_DAL_MIN_ADDR)); - time->hour = BCD_TO_INT(read_io_port(RTC_DAL_HOUR_ADDR)); - time->day = BCD_TO_INT(read_io_port(RTC_DAL_DATE_ADDR)); - time->month = BCD_TO_INT(read_io_port(RTC_DAL_MONTH_ADDR)); - time->year = BCD_TO_INT(read_io_port(RTC_DAL_YEAR_ADDR)) + YRREF; - - write_io_port(RTC_DAL_CONTROL_ADDR, RTC_DAL_UPDATE_ENABLE); - break; - - default: - break; - } - - if (caps) { - caps->resolution = 50000000; /* 50PPM */ - caps->accuracy = 1000; /* 1ms */ - caps->sets_to_zero = 0; - } - - return EFI_SUCCESS; -} - -static efi_status_t ioc3_set_time (efi_time_t *t) -{ - if (!nvram_base) { - printk(KERN_CRIT "nvram_base is zero\n"); - return EFI_UNSUPPORTED; - } - - switch (tod_chip_type) { - case TOD_SGS_M48T35: - write_io_port(RTC_SGS_CONTROL_ADDR, RTC_SGS_WRITE_ENABLE); - write_io_port(RTC_SGS_YEAR_ADDR, INT_TO_BCD((t->year - YRREF))); - write_io_port(RTC_SGS_MONTH_ADDR,INT_TO_BCD(t->month)); - write_io_port(RTC_SGS_DATE_ADDR, INT_TO_BCD(t->day)); - write_io_port(RTC_SGS_HOUR_ADDR, INT_TO_BCD(t->hour)); - write_io_port(RTC_SGS_MIN_ADDR, INT_TO_BCD(t->minute)); - write_io_port(RTC_SGS_SEC_ADDR, INT_TO_BCD(t->second)); - write_io_port(RTC_SGS_CONTROL_ADDR, 0); - break; - - case TOD_DALLAS_DS1386: - write_io_port(RTC_DAL_CONTROL_ADDR, RTC_DAL_UPDATE_DISABLE); - write_io_port(RTC_DAL_SEC_ADDR, INT_TO_BCD(t->second)); - write_io_port(RTC_DAL_MIN_ADDR, INT_TO_BCD(t->minute)); - write_io_port(RTC_DAL_HOUR_ADDR, INT_TO_BCD(t->hour)); - write_io_port(RTC_DAL_DATE_ADDR, INT_TO_BCD(t->day)); - write_io_port(RTC_DAL_MONTH_ADDR,INT_TO_BCD(t->month)); - write_io_port(RTC_DAL_YEAR_ADDR, INT_TO_BCD((t->year - YRREF))); - write_io_port(RTC_DAL_CONTROL_ADDR, RTC_DAL_UPDATE_ENABLE); - break; - - default: - break; - } - - return EFI_SUCCESS; -} - -/* The following two are not supported atm. */ -static efi_status_t -ioc3_get_wakeup_time (efi_bool_t *enabled, efi_bool_t *pending, efi_time_t *tm) -{ - return EFI_UNSUPPORTED; -} - -static efi_status_t -ioc3_set_wakeup_time (efi_bool_t enabled, efi_time_t *tm) -{ - return EFI_UNSUPPORTED; -} - -/* - * It looks like the master IOC3 is usually on bus 0, device 4. Hope - * that's right - */ -static __init int efi_ioc3_time_init(void) -{ - struct pci_dev *dev; - static struct ioc3 *ioc3; - - dev = pci_find_slot(0, PCI_DEVFN(4, 0)); - if (!dev) { - printk(KERN_CRIT "Couldn't find master IOC3\n"); - - return -ENODEV; - } - - ioc3 = ioremap(pci_resource_start(dev, 0), pci_resource_len(dev, 0)); - nvram_base = (unsigned long) ioc3 + IOC3_BYTEBUS_DEV0; - - tod_chip_type = get_tod_chip_type(); - if (tod_chip_type == 1) - printk(KERN_NOTICE "TOD type is SGS M48T35\n"); - else if (tod_chip_type == 2) - printk(KERN_NOTICE "TOD type is Dallas DS1386\n"); - else - printk(KERN_CRIT "No or unknown TOD\n"); - - efi.get_time = ioc3_get_time; - efi.set_time = ioc3_set_time; - efi.get_wakeup_time = ioc3_get_wakeup_time; - efi.set_wakeup_time = ioc3_set_wakeup_time; - - return 0; -} - -module_init(efi_ioc3_time_init); |