/* * Copyright (C) 2006 Atmel Corporation * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef __ASM_AVR32_ADDRSPACE_H #define __ASM_AVR32_ADDRSPACE_H #include <asm/types.h> /* Memory segments when segmentation is enabled */ #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)) /* virt_to_phys will only work when address is in P1 or P2 */ static inline unsigned long virt_to_phys(volatile void *address) { return PHYSADDR(address); } static inline void * phys_to_virt(unsigned long address) { return (void *)P1SEGADDR(address); } #define cached(addr) ((void *)P1SEGADDR(addr)) #define uncached(addr) ((void *)P2SEGADDR(addr)) /* * Given a physical address and a length, return a virtual address * that can be used to access the memory range with the caching * properties specified by "flags". * * This implementation works for memory below 512MiB (flash, etc.) as * well as above 3.5GiB (internal peripherals.) */ #define MAP_NOCACHE (0) #define MAP_WRCOMBINE (1 << 7) #define MAP_WRBACK (MAP_WRCOMBINE | (1 << 9)) #define MAP_WRTHROUGH (MAP_WRBACK | (1 << 0)) static inline void * map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) { return (void *)paddr; } #endif /* __ASM_AVR32_ADDRSPACE_H */