aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-sh/mmu.h
diff options
context:
space:
mode:
authorPaul Mundt <lethal@linux-sh.org>2006-09-27 02:08:07 -0400
committerPaul Mundt <lethal@linux-sh.org>2006-09-27 02:08:07 -0400
commit0c7b1df69c62209db19d1279dd882b37c04c5c2f (patch)
tree48e8f95b2ec02173ad2e930325e21e4509a08d19 /include/asm-sh/mmu.h
parenta09749dd86e9e93de10f12ab4ce4e90815b5650a (diff)
sh: SH-4A Privileged Space Mapping Buffer (PMB) support.
Add support for 32-bit physical addressing through the SH-4A Privileged Space Mapping Buffer (PMB). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/mmu.h')
-rw-r--r--include/asm-sh/mmu.h48
1 files changed, 47 insertions, 1 deletions
diff --git a/include/asm-sh/mmu.h b/include/asm-sh/mmu.h
index 72f07be6117f..91c884634276 100644
--- a/include/asm-sh/mmu.h
+++ b/include/asm-sh/mmu.h
@@ -25,5 +25,51 @@ typedef struct {
25typedef unsigned long mm_context_t; 25typedef unsigned long mm_context_t;
26 26
27#endif /* CONFIG_MMU */ 27#endif /* CONFIG_MMU */
28#endif /* __MMH_H */ 28
29/*
30 * Privileged Space Mapping Buffer (PMB) definitions
31 */
32#define PMB_PASCR 0xff000070
33#define PMB_IRMCR 0xff000078
34
35#define PMB_ADDR 0xf6100000
36#define PMB_DATA 0xf7100000
37#define PMB_ENTRY_MAX 16
38#define PMB_E_MASK 0x0000000f
39#define PMB_E_SHIFT 8
40
41#define PMB_SZ_16M 0x00000000
42#define PMB_SZ_64M 0x00000010
43#define PMB_SZ_128M 0x00000080
44#define PMB_SZ_512M 0x00000090
45#define PMB_SZ_MASK PMB_SZ_512M
46#define PMB_C 0x00000008
47#define PMB_WT 0x00000001
48#define PMB_UB 0x00000200
49#define PMB_V 0x00000100
50
51#define PMB_NO_ENTRY (-1)
52
53struct pmb_entry {
54 unsigned long vpn;
55 unsigned long ppn;
56 unsigned long flags;
57
58 /*
59 * 0 .. NR_PMB_ENTRIES for specific entry selection, or
60 * PMB_NO_ENTRY to search for a free one
61 */
62 int entry;
63};
64
65/* arch/sh/mm/pmb.c */
66int __set_pmb_entry(unsigned long vpn, unsigned long ppn,
67 unsigned long flags, int *entry);
68void set_pmb_entry(struct pmb_entry *pmbe);
69void clear_pmb_entry(struct pmb_entry *pmbe);
70struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
71 unsigned long flags);
72void pmb_free(struct pmb_entry *pmbe);
73
74#endif /* __MMU_H */
29 75