mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
d04ceb3fc2
Moved phys_addr_t out of mmu-*.h and into asm/types.h so we can use it in places that before would have caused recursive includes. For example to use phys_addr_t in <asm/page.h> we would have included <asm/mmu.h> which would have possibly included <asm/mmu-hash64.h> which includes <asm/page.h>. Wheeee recursive include. CONFIG_PHYS_64BIT is a bit counterintuitive in light of ppc64 systems and thus the config option is only used for ppc32 systems with >32-bit physical addresses (44x, 85xx, 745x, etc.). Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
#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_ */
|