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- /*
- * Copyright (C) 2006 Atmel Corporation
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
- #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 */
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