/* * 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 #ifdef __KERNEL__ #include <cpu/addrspace.h> /* If this CPU supports segmentation, hook up the helpers */ #ifdef P1SEG /* [ P0/U0 (virtual) ] 0x00000000 <------ User space [ P1 (fixed) cached ] 0x80000000 <------ Kernel space [ P2 (fixed) non-cachable] 0xA0000000 <------ Physical access [ P3 (virtual) cached] 0xC0000000 <------ vmalloced area [ P4 control ] 0xE0000000 */ /* Returns the privileged segment base of a given address */ #define PXSEG(a) (((unsigned long)(a)) & 0xe0000000) #ifdef CONFIG_29BIT /* * 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)) #else /* * These will never work in 32-bit, don't even bother. */ #define P1SEGADDR(a) ({ (void)(a); BUG(); NULL; }) #define P2SEGADDR(a) ({ (void)(a); BUG(); NULL; }) #define P3SEGADDR(a) ({ (void)(a); BUG(); NULL; }) #define P4SEGADDR(a) ({ (void)(a); BUG(); NULL; }) #endif #endif /* P1SEG */ /* Check if an address can be reached in 29 bits */ #define IS_29BIT(a) (((unsigned long)(a)) < 0x20000000) #ifdef CONFIG_SH_STORE_QUEUES /* * This is a special case for the SH-4 store queues, as pages for this * space still need to be faulted in before it's possible to flush the * store queue cache for writeout to the remapped region. */ #define P3_ADDR_MAX (P4SEG_STORE_QUE + 0x04000000) #else #define P3_ADDR_MAX P4SEG #endif #endif /* __KERNEL__ */ #endif /* __ASM_SH_ADDRSPACE_H */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp | |
| paul mundt | paul mundt | 53 | 41.41% | 8 | 61.54% |
| pre-git | pre-git | 47 | 36.72% | 2 | 15.38% |
| magnus damm | magnus damm | 16 | 12.50% | 1 | 7.69% |
| stuart menefy | stuart menefy | 11 | 8.59% | 1 | 7.69% |
| yoshinori sato | yoshinori sato | 1 | 0.78% | 1 | 7.69% |
| Total | 128 | 100.00% | 13 | 100.00% |