patch-2.4.22 linux-2.4.22/arch/ia64/sn/io/sn2/efi-rtc.c

• Lines: 203
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/arch/ia64/sn/io/sn2/efi-rtc.c
• Orig date: 2003-06-13 07:51:30.000000000 -0700

diff -urN linux-2.4.21/arch/ia64/sn/io/sn2/efi-rtc.c linux-2.4.22/arch/ia64/sn/io/sn2/efi-rtc.c
@@ -1,202 +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) 2001-2002 Silicon Graphics, Inc.  All Rights Reserved.
- * 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
-
-#define TYPE_IOC3		1
-#define TYPE_IOC4		2
-
-static unsigned long nvram_base = 0;
-static int tod_chip_type;
-static int ioc_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;
-}
-
-static __init int efi_ioc_time_init(void)
-{
-	struct pci_dev *dev = NULL;
-	static void *ioc_base;
-
-        while ( (dev = pci_find_subsys(PCI_VENDOR_ID_SGI,
-                               PCI_ANY_ID,
-                               PCI_ANY_ID,
-                               PCI_ANY_ID, dev))) {
-		if ( dev->device == PCI_DEVICE_ID_SGI_IOC3 ) {
-			ioc_type = TYPE_IOC3;
-			break;
-		}
-		else if ( dev->device == PCI_DEVICE_ID_SGI_IOC4 ) {
-			ioc_type = TYPE_IOC4;
-			break;
-		}
-		else
-			;; // keep looking
-	}
-
-	if ( !dev ) {
-		printk(KERN_CRIT "Couldn't find master IOC\n");
-		return -ENODEV;
-	}
-
-	ioc_base = ioremap(pci_resource_start(dev, 0), pci_resource_len(dev, 0));
-	if ( ioc_type == TYPE_IOC3 )
-		nvram_base = (unsigned long) ioc_base + IOC3_BYTEBUS_DEV0;
-	if ( ioc_type == TYPE_IOC4 )
-		nvram_base = (unsigned long) ioc_base + IOC4_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_ioc_time_init);