ia64/linux-2.6.18-xen.hg

view include/asm-arm/arch-pxa/mtd-xip.h @ 912:dd42cdb0ab89

[IA64] Build blktap2 driver by default in x86 builds.

add CONFIG_XEN_BLKDEV_TAP2=y to buildconfigs/linux-defconfig_xen_ia64.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 12:09:16 2009 +0900 (2009-06-29)
parents 831230e53067
children
line source
1 /*
2 * MTD primitives for XIP support. Architecture specific functions
3 *
4 * Do not include this file directly. It's included from linux/mtd/xip.h
5 *
6 * Author: Nicolas Pitre
7 * Created: Nov 2, 2004
8 * Copyright: (C) 2004 MontaVista Software, Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * $Id: xip.h,v 1.2 2004/12/01 15:49:10 nico Exp $
15 */
17 #ifndef __ARCH_PXA_MTD_XIP_H__
18 #define __ARCH_PXA_MTD_XIP_H__
20 #include <asm/arch/pxa-regs.h>
22 #define xip_irqpending() (ICIP & ICMR)
24 /* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */
25 #define xip_currtime() (OSCR)
26 #define xip_elapsed_since(x) (signed)((OSCR - (x)) / 4)
28 /*
29 * xip_cpu_idle() is used when waiting for a delay equal or larger than
30 * the system timer tick period. This should put the CPU into idle mode
31 * to save power and to be woken up only when some interrupts are pending.
32 * As above, this should not rely upon standard kernel code.
33 */
35 #define xip_cpu_idle() asm volatile ("mcr p14, 0, %0, c7, c0, 0" :: "r" (1))
37 #endif /* __ARCH_PXA_MTD_XIP_H__ */