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author | merge <null@invalid> | 2009-02-06 00:22:54 +0000 |
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committer | Andy Green <agreen@octopus.localdomain> | 2009-02-06 00:22:54 +0000 |
commit | d1dcdf5718977c93805f9300b6c79f039db84c8b (patch) | |
tree | 58a161db6cf8953e33c1c9294a9c720a1aa0ad76 /arch/m68k/include/asm/sun3mmu.h | |
parent | 9029dff1f370018665a6e2999632a34fd0518f4d (diff) |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 / 1c405b6ccee468298e7ccbfd9a3a3f4d123207b0 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414
stable-tracking-hist top was MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 / 71be0a45396066b1f8f27f8f4f87937247a129e1 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011
mokopatches-tracking-hist top was MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 / 1be1b01373f572a02c6f1f99863c8c11ed2f9f5b ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-master-MERGE-via-master-hist-1232625318
master top was MERGE-via-master-hist-1232625318 / dd4b117123ae66451695810017eb72fbdfc05df5 ... parent commitmessage:
From: merge <null@invalid>
MERGE-master-patchset-edits
Diffstat (limited to 'arch/m68k/include/asm/sun3mmu.h')
-rw-r--r-- | arch/m68k/include/asm/sun3mmu.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/sun3mmu.h b/arch/m68k/include/asm/sun3mmu.h new file mode 100644 index 00000000000..d8f17a0d8c9 --- /dev/null +++ b/arch/m68k/include/asm/sun3mmu.h @@ -0,0 +1,171 @@ +/* + * Definitions for Sun3 custom MMU. + */ +#ifndef __SUN3_MMU_H__ +#define __SUN3_MMU_H__ + +#include <linux/types.h> +#include <asm/movs.h> +#include <asm/sun3-head.h> + +/* MMU characteristics. */ +#define SUN3_SEGMAPS_PER_CONTEXT 2048 +#define SUN3_PMEGS_NUM 256 +#define SUN3_CONTEXTS_NUM 8 + +#define SUN3_PMEG_SIZE_BITS 17 +#define SUN3_PMEG_SIZE (1 << SUN3_PMEG_SIZE_BITS) +#define SUN3_PMEG_MASK (SUN3_PMEG_SIZE - 1) + +#define SUN3_PTE_SIZE_BITS 13 +#define SUN3_PTE_SIZE (1 << SUN3_PTE_SIZE_BITS) +#define SUN3_PTE_MASK (SUN3_PTE_SIZE - 1) + +#define SUN3_CONTROL_MASK (0x0FFFFFFC) +#define SUN3_INVALID_PMEG 255 +#define SUN3_INVALID_CONTEXT 255 + +#define AC_IDPROM 0x00000000 /* 34 ID PROM, R/O, byte, 32 bytes */ +#define AC_PAGEMAP 0x10000000 /* 3 Pagemap R/W, long */ +#define AC_SEGMAP 0x20000000 /* 3 Segment map, byte */ +#define AC_CONTEXT 0x30000000 /* 34c current mmu-context */ +#define AC_SENABLE 0x40000000 /* 34c system dvma/cache/reset enable reg*/ +#define AC_UDVMA_ENB 0x50000000 /* 34 Not used on Sun boards, byte */ +#define AC_BUS_ERROR 0x60000000 /* 34 Cleared on read, byte. */ +#define AC_SYNC_ERR 0x60000000 /* c fault type */ +#define AC_SYNC_VA 0x60000004 /* c fault virtual address */ +#define AC_ASYNC_ERR 0x60000008 /* c asynchronous fault type */ +#define AC_ASYNC_VA 0x6000000c /* c async fault virtual address */ +#define AC_LEDS 0x70000000 /* 34 Zero turns on LEDs, byte */ +#define AC_CACHETAGS 0x80000000 /* 34c direct access to the VAC tags */ +#define AC_CACHEDDATA 0x90000000 /* 3 c direct access to the VAC data */ +#define AC_UDVMA_MAP 0xD0000000 /* 4 Not used on Sun boards, byte */ +#define AC_VME_VECTOR 0xE0000000 /* 4 For non-Autovector VME, byte */ +#define AC_BOOT_SCC 0xF0000000 /* 34 bypass to access Zilog 8530. byte.*/ + +#define SUN3_PAGE_CHG_MASK (SUN3_PAGE_PGNUM_MASK \ + | SUN3_PAGE_ACCESSED | SUN3_PAGE_MODIFIED) + +/* Bus access type within PTE. */ +#define SUN3_PAGE_TYPE_MASK (0x0c000000) +#define SUN3_PAGE_TYPE_MEMORY (0x00000000) +#define SUN3_PAGE_TYPE_IO (0x04000000) +#define SUN3_PAGE_TYPE_VME16 (0x08000000) +#define SUN3_PAGE_TYPE_VME32 (0x0c000000) + +/* Mask for page number within PTE. */ +#define SUN3_PAGE_PGNUM_MASK (0x0007FFFF) + +/* Bits within bus-error register. */ +#define SUN3_BUSERR_WATCHDOG (0x01) +#define SUN3_BUSERR_unused (0x02) +#define SUN3_BUSERR_FPAENERR (0x04) +#define SUN3_BUSERR_FPABERR (0x08) +#define SUN3_BUSERR_VMEBERR (0x10) +#define SUN3_BUSERR_TIMEOUT (0x20) +#define SUN3_BUSERR_PROTERR (0x40) +#define SUN3_BUSERR_INVALID (0x80) + +#ifndef __ASSEMBLY__ + +/* Read bus error status register (implicitly clearing it). */ +static inline unsigned char sun3_get_buserr(void) +{ + unsigned char sfc, c; + + GET_SFC (sfc); + SET_SFC (FC_CONTROL); + GET_CONTROL_BYTE (AC_BUS_ERROR, c); + SET_SFC (sfc); + + return c; +} + +/* Read segmap from hardware MMU. */ +static inline unsigned long sun3_get_segmap(unsigned long addr) +{ + register unsigned long entry; + unsigned char c, sfc; + + GET_SFC (sfc); + SET_SFC (FC_CONTROL); + GET_CONTROL_BYTE (AC_SEGMAP | (addr & SUN3_CONTROL_MASK), c); + SET_SFC (sfc); + entry = c; + + return entry; +} + +/* Write segmap to hardware MMU. */ +static inline void sun3_put_segmap(unsigned long addr, unsigned long entry) +{ + unsigned char sfc; + + GET_DFC (sfc); + SET_DFC (FC_CONTROL); + SET_CONTROL_BYTE (AC_SEGMAP | (addr & SUN3_CONTROL_MASK), entry); + SET_DFC (sfc); + + return; +} + +/* Read PTE from hardware MMU. */ +static inline unsigned long sun3_get_pte(unsigned long addr) +{ + register unsigned long entry; + unsigned char sfc; + + GET_SFC (sfc); + SET_SFC (FC_CONTROL); + GET_CONTROL_WORD (AC_PAGEMAP | (addr & SUN3_CONTROL_MASK), entry); + SET_SFC (sfc); + + return entry; +} + +/* Write PTE to hardware MMU. */ +static inline void sun3_put_pte(unsigned long addr, unsigned long entry) +{ + unsigned char sfc; + + GET_DFC (sfc); + SET_DFC (FC_CONTROL); + SET_CONTROL_WORD (AC_PAGEMAP | (addr & SUN3_CONTROL_MASK), entry); + SET_DFC (sfc); + + return; +} + +/* get current context */ +static inline unsigned char sun3_get_context(void) +{ + unsigned char sfc, c; + + GET_SFC(sfc); + SET_SFC(FC_CONTROL); + GET_CONTROL_BYTE(AC_CONTEXT, c); + SET_SFC(sfc); + + return c; +} + +/* set alternate context */ +static inline void sun3_put_context(unsigned char c) +{ + unsigned char dfc; + GET_DFC(dfc); + SET_DFC(FC_CONTROL); + SET_CONTROL_BYTE(AC_CONTEXT, c); + SET_DFC(dfc); + + return; +} + +extern void __iomem *sun3_ioremap(unsigned long phys, unsigned long size, + unsigned long type); + +extern int sun3_map_test(unsigned long addr, char *val); + +#endif /* !__ASSEMBLY__ */ + +#endif /* !__SUN3_MMU_H__ */ |