blob: 6e21ca618ec352874e472a2f59b6da40cea22ae4 (
plain) (
tree)
|
|
#ifndef _ASM_POWERPC_MMU_HASH32_H_
#define _ASM_POWERPC_MMU_HASH32_H_
/*
* 32-bit hash table MMU support
*/
/*
* BATs
*/
/* Block size masks */
#define BL_128K 0x000
#define BL_256K 0x001
#define BL_512K 0x003
#define BL_1M 0x007
#define BL_2M 0x00F
#define BL_4M 0x01F
#define BL_8M 0x03F
#define BL_16M 0x07F
#define BL_32M 0x0FF
#define BL_64M 0x1FF
#define BL_128M 0x3FF
#define BL_256M 0x7FF
/* BAT Access Protection */
#define BPP_XX 0x00 /* No access */
#define BPP_RX 0x01 /* Read only */
#define BPP_RW 0x02 /* Read/write */
#ifndef __ASSEMBLY__
struct ppc_bat {
struct {
unsigned long bepi:15; /* Effective page index (virtual address) */
unsigned long :4; /* Unused */
unsigned long bl:11; /* Block size mask */
unsigned long vs:1; /* Supervisor valid */
unsigned long vp:1; /* User valid */
} batu; /* Upper register */
struct {
unsigned long brpn:15; /* Real page index (physical address) */
unsigned long :10; /* Unused */
unsigned long w:1; /* Write-thru cache */
unsigned long i:1; /* Cache inhibit */
unsigned long m:1; /* Memory coherence */
unsigned long g:1; /* Guarded (MBZ in IBAT) */
unsigned long :1; /* Unused */
unsigned long pp:2; /* Page access protections */
} batl; /* Lower register */
};
#endif /* !__ASSEMBLY__ */
/*
* Hash table
*/
/* Values for PP (assumes Ks=0, Kp=1) */
#define PP_RWXX 0 /* Supervisor read/write, User none */
#define PP_RWRX 1 /* Supervisor read/write, User read */
#define PP_RWRW 2 /* Supervisor read/write, User read/write */
#define PP_RXRX 3 /* Supervisor read, User read */
#ifndef __ASSEMBLY__
/* Hardware Page Table Entry */
struct hash_pte {
unsigned long v:1; /* Entry is valid */
unsigned long vsid:24; /* Virtual segment identifier */
unsigned long h:1; /* Hash algorithm indicator */
unsigned long api:6; /* Abbreviated page index */
unsigned long rpn:20; /* Real (physical) page number */
unsigned long :3; /* Unused */
unsigned long r:1; /* Referenced */
unsigned long c:1; /* Changed */
unsigned long w:1; /* Write-thru cache mode */
unsigned long i:1; /* Cache inhibited */
unsigned long m:1; /* Memory coherence */
unsigned long g:1; /* Guarded */
unsigned long :1; /* Unused */
unsigned long pp:2; /* Page protection */
};
typedef struct {
unsigned long id;
unsigned long vdso_base;
} mm_context_t;
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_POWERPC_MMU_HASH32_H_ */
|
