diff options
-rw-r--r-- | arch/sparc/include/asm/pgtable_32.h | 1 | ||||
-rw-r--r-- | arch/sparc/include/asm/uaccess_32.h | 1 | ||||
-rw-r--r-- | arch/sparc/include/asm/vac-ops.h | 127 | ||||
-rw-r--r-- | arch/sparc/mm/init_32.c | 1 |
4 files changed, 0 insertions, 130 deletions
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h index f451d43..9f3ab0a 100644 --- a/arch/sparc/include/asm/pgtable_32.h +++ b/arch/sparc/include/asm/pgtable_32.h @@ -17,7 +17,6 @@ #include <linux/swap.h> #include <asm/types.h> #include <asm/pgtsrmmu.h> -#include <asm/vac-ops.h> #include <asm/oplib.h> #include <asm/btfixup.h> #include <asm/cpu_type.h> diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h index 8303ac4..d50c310 100644 --- a/arch/sparc/include/asm/uaccess_32.h +++ b/arch/sparc/include/asm/uaccess_32.h @@ -12,7 +12,6 @@ #include <linux/sched.h> #include <linux/string.h> #include <linux/errno.h> -#include <asm/vac-ops.h> #endif #ifndef __ASSEMBLY__ diff --git a/arch/sparc/include/asm/vac-ops.h b/arch/sparc/include/asm/vac-ops.h deleted file mode 100644 index a63e88e..0000000 --- a/arch/sparc/include/asm/vac-ops.h +++ /dev/null @@ -1,127 +0,0 @@ -#ifndef _SPARC_VAC_OPS_H -#define _SPARC_VAC_OPS_H - -/* vac-ops.h: Inline assembly routines to do operations on the Sparc - * VAC (virtual address cache) for the sun4c. - * - * Copyright (C) 1994, David S. Miller (davem@caip.rutgers.edu) - */ - -#include <asm/sysen.h> -#include <asm/contregs.h> -#include <asm/asi.h> - -/* The SUN4C models have a virtually addressed write-through - * cache. - * - * The cache tags are directly accessible through an ASI and - * each have the form: - * - * ------------------------------------------------------------ - * | MBZ | CONTEXT | WRITE | PRIV | VALID | MBZ | TagID | MBZ | - * ------------------------------------------------------------ - * 31 25 24 22 21 20 19 18 16 15 2 1 0 - * - * MBZ: These bits are either unused and/or reserved and should - * be written as zeroes. - * - * CONTEXT: Records the context to which this cache line belongs. - * - * WRITE: A copy of the writable bit from the mmu pte access bits. - * - * PRIV: A copy of the privileged bit from the pte access bits. - * - * VALID: If set, this line is valid, else invalid. - * - * TagID: Fourteen bits of tag ID. - * - * Every virtual address is seen by the cache like this: - * - * ---------------------------------------- - * | RESV | TagID | LINE | BYTE-in-LINE | - * ---------------------------------------- - * 31 30 29 16 15 4 3 0 - * - * RESV: Unused/reserved. - * - * TagID: Used to match the Tag-ID in that vac tags. - * - * LINE: Which line within the cache - * - * BYTE-in-LINE: Which byte within the cache line. - */ - -/* Sun4c VAC Tags */ -#define S4CVACTAG_CID 0x01c00000 -#define S4CVACTAG_W 0x00200000 -#define S4CVACTAG_P 0x00100000 -#define S4CVACTAG_V 0x00080000 -#define S4CVACTAG_TID 0x0000fffc - -/* Sun4c VAC Virtual Address */ -/* These aren't used, why bother? (Anton) */ -#if 0 -#define S4CVACVA_TID 0x3fff0000 -#define S4CVACVA_LINE 0x0000fff0 -#define S4CVACVA_BIL 0x0000000f -#endif - -/* The indexing of cache lines creates a problem. Because the line - * field of a virtual address extends past the page offset within - * the virtual address it is possible to have what are called - * 'bad aliases' which will create inconsistencies. So we must make - * sure that within a context that if a physical page is mapped - * more than once, that 'extra' line bits are the same. If this is - * not the case, and thus is a 'bad alias' we must turn off the - * cacheable bit in the pte's of all such pages. - */ - -#define S4CVAC_BADBITS 0x0000f000 - -/* The following is true if vaddr1 and vaddr2 would cause - * a 'bad alias'. - */ -#define S4CVAC_BADALIAS(vaddr1, vaddr2) \ - ((((unsigned long) (vaddr1)) ^ ((unsigned long) (vaddr2))) & \ - (S4CVAC_BADBITS)) - -/* The following structure describes the characteristics of a sun4c - * VAC as probed from the prom during boot time. - */ -struct sun4c_vac_props { - unsigned int num_bytes; /* Size of the cache */ - unsigned int do_hwflushes; /* Hardware flushing available? */ - unsigned int linesize; /* Size of each line in bytes */ - unsigned int log2lsize; /* log2(linesize) */ - unsigned int on; /* VAC is enabled */ -}; - -extern struct sun4c_vac_props sun4c_vacinfo; - -/* sun4c_enable_vac() enables the sun4c virtual address cache. */ -static inline void sun4c_enable_vac(void) -{ - __asm__ __volatile__("lduba [%0] %1, %%g1\n\t" - "or %%g1, %2, %%g1\n\t" - "stba %%g1, [%0] %1\n\t" - : /* no outputs */ - : "r" ((unsigned int) AC_SENABLE), - "i" (ASI_CONTROL), "i" (SENABLE_CACHE) - : "g1", "memory"); - sun4c_vacinfo.on = 1; -} - -/* sun4c_disable_vac() disables the virtual address cache. */ -static inline void sun4c_disable_vac(void) -{ - __asm__ __volatile__("lduba [%0] %1, %%g1\n\t" - "andn %%g1, %2, %%g1\n\t" - "stba %%g1, [%0] %1\n\t" - : /* no outputs */ - : "r" ((unsigned int) AC_SENABLE), - "i" (ASI_CONTROL), "i" (SENABLE_CACHE) - : "g1", "memory"); - sun4c_vacinfo.on = 0; -} - -#endif /* !(_SPARC_VAC_OPS_H) */ diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c index 15848e7..21342db 100644 --- a/arch/sparc/mm/init_32.c +++ b/arch/sparc/mm/init_32.c @@ -27,7 +27,6 @@ #include <linux/gfp.h> #include <asm/sections.h> -#include <asm/vac-ops.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/vaddrs.h> |