addrspace.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 37 行

/*
 * 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) 1999 by Kaz Kojima
 *
 * Defitions for the address spaces of the SH CPUs.
 */
#ifndef __ASM_SH_ADDRSPACE_H
#define __ASM_SH_ADDRSPACE_H

#include <asm/cpu/addrspace.h>

/* Memory segments (32bit Priviledged mode addresses)  */
#define P0SEG		0x00000000
#define P1SEG		0x80000000
#define P2SEG		0xa0000000
#define P3SEG		0xc0000000
#define P4SEG		0xe0000000

/* Returns the privileged segment base of a given address  */
#define PXSEG(a)	(((unsigned long)(a)) & 0xe0000000)

/* Returns the physical address of a PnSEG (n=1,2) address   */
#define PHYSADDR(a)	(((unsigned long)(a)) & 0x1fffffff)

/*
 * Map an address to a certain privileged segment
 */
#define P1SEGADDR(a)	((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P1SEG))
#define P2SEGADDR(a)	((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P2SEG))
#define P3SEGADDR(a)	((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P3SEG))
#define P4SEGADDR(a)	((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P4SEG))

#endif /* __ASM_SH_ADDRSPACE_H */