include/asm-sh/addrspace.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1999 by Kaz Kojima
   7  *
   8  * Defitions for the address spaces of the SH CPUs.
   9  */
  10 #ifndef __ASM_SH_ADDRSPACE_H
  11 #define __ASM_SH_ADDRSPACE_H
  12 #ifdef __KERNEL__
  13
  14 #include <asm/cpu/addrspace.h>
  15
  16 /* Memory segments (32bit Priviledged mode addresses)  */
  17 #define P0SEG           0x00000000
  18 #define P1SEG           0x80000000
  19 #define P2SEG           0xa0000000
  20 #define P3SEG           0xc0000000
  21 #define P4SEG           0xe0000000
  22
  23 /* Returns the privileged segment base of a given address  */
  24 #define PXSEG(a)        (((unsigned long)(a)) & 0xe0000000)
  25
  26 /* Returns the physical address of a PnSEG (n=1,2) address   */
  27 #define PHYSADDR(a)     (((unsigned long)(a)) & 0x1fffffff)
  28
  29 /*
  30  * Map an address to a certain privileged segment
  31  */
  32 #define P1SEGADDR(a)    ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P1SEG))
  33 #define P2SEGADDR(a)    ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P2SEG))
  34 #define P3SEGADDR(a)    ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P3SEG))
  35 #define P4SEGADDR(a)    ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P4SEG))
  36
  37 #endif /* __KERNEL__ */
  38 #endif /* __ASM_SH_ADDRSPACE_H */