mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 05:04:00 +08:00
aec5e0e1c1
Previously this was implemented using a global cache, cache this per-CPU instead and bump up the number of context IDs to match NR_CPUS. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
#ifndef __MMU_H
|
|
#define __MMU_H
|
|
|
|
/* Default "unsigned long" context */
|
|
typedef unsigned long mm_context_id_t[NR_CPUS];
|
|
|
|
typedef struct {
|
|
#ifdef CONFIG_MMU
|
|
mm_context_id_t id;
|
|
void *vdso;
|
|
#else
|
|
struct vm_list_struct *vmlist;
|
|
unsigned long end_brk;
|
|
#endif
|
|
} mm_context_t;
|
|
|
|
/*
|
|
* Privileged Space Mapping Buffer (PMB) definitions
|
|
*/
|
|
#define PMB_PASCR 0xff000070
|
|
#define PMB_IRMCR 0xff000078
|
|
|
|
#define PMB_ADDR 0xf6100000
|
|
#define PMB_DATA 0xf7100000
|
|
#define PMB_ENTRY_MAX 16
|
|
#define PMB_E_MASK 0x0000000f
|
|
#define PMB_E_SHIFT 8
|
|
|
|
#define PMB_SZ_16M 0x00000000
|
|
#define PMB_SZ_64M 0x00000010
|
|
#define PMB_SZ_128M 0x00000080
|
|
#define PMB_SZ_512M 0x00000090
|
|
#define PMB_SZ_MASK PMB_SZ_512M
|
|
#define PMB_C 0x00000008
|
|
#define PMB_WT 0x00000001
|
|
#define PMB_UB 0x00000200
|
|
#define PMB_V 0x00000100
|
|
|
|
#define PMB_NO_ENTRY (-1)
|
|
|
|
struct pmb_entry;
|
|
|
|
struct pmb_entry {
|
|
unsigned long vpn;
|
|
unsigned long ppn;
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* 0 .. NR_PMB_ENTRIES for specific entry selection, or
|
|
* PMB_NO_ENTRY to search for a free one
|
|
*/
|
|
int entry;
|
|
|
|
struct pmb_entry *next;
|
|
/* Adjacent entry link for contiguous multi-entry mappings */
|
|
struct pmb_entry *link;
|
|
};
|
|
|
|
/* arch/sh/mm/pmb.c */
|
|
int __set_pmb_entry(unsigned long vpn, unsigned long ppn,
|
|
unsigned long flags, int *entry);
|
|
int set_pmb_entry(struct pmb_entry *pmbe);
|
|
void clear_pmb_entry(struct pmb_entry *pmbe);
|
|
struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
|
|
unsigned long flags);
|
|
void pmb_free(struct pmb_entry *pmbe);
|
|
long pmb_remap(unsigned long virt, unsigned long phys,
|
|
unsigned long size, unsigned long flags);
|
|
void pmb_unmap(unsigned long addr);
|
|
|
|
#endif /* __MMU_H */
|
|
|