diff options
Diffstat (limited to 'include/asm-ia64/sn/hires_clock.h')
| -rw-r--r-- | include/asm-ia64/sn/hires_clock.h | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/include/asm-ia64/sn/hires_clock.h b/include/asm-ia64/sn/hires_clock.h deleted file mode 100644 index d85f8547bbd1d0..00000000000000 --- a/include/asm-ia64/sn/hires_clock.h +++ /dev/null @@ -1,52 +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. All rights reserved. - * - * SGI Hi Resolution Clock - * - * SGI SN platforms provide a high resolution clock that is - * synchronized across all nodes. The clock can be memory mapped - * and directly read from user space. - * - * Access to the clock is thru the following: - * (error checking not shown) - * - * (Note: should library routines be provided to encapsulate this??) - * - * int fd: - * volatile long *clk; - * - * fd = open (HIRES_FULLNAME, O_RDONLY); - * clk = mmap(0, getpagesize(), PROT_READ, MAP_SHARED, fd, 0); - * clk += ioctl(fd, HIRES_IOCQGETOFFSET, 0); - * - * At this point, clk is a pointer to the high resolution clock. - * - * The clock period can be obtained via: - * - * long picosec_per_tick; - * picosec_per_tick = ioctl(fd, HIRES_IOCQGETPICOSEC, 0); - */ - -#ifndef _ASM_IA64_SN_HIRES_CLOCK_H -#define _ASM_IA64_SN_HIRES_CLOCK_H - - -#define HIRES_BASENAME "sgi_hires_clock" -#define HIRES_FULLNAME "/dev/sgi_hires_clock" -#define HIRES_IOC_BASE 's' - - -/* Get page offset of hires timer */ -#define HIRES_IOCQGETOFFSET _IO( HIRES_IOC_BASE, 0 ) - -/* get clock period in picoseconds per tick */ -#define HIRES_IOCQGETPICOSEC _IO( HIRES_IOC_BASE, 1 ) - -/* get number of significant bits in clock counter */ -#define HIRES_IOCQGETCLOCKBITS _IO( HIRES_IOC_BASE, 2 ) - -#endif /* _ASM_IA64_SN_HIRES_CLOCK_H */ |