mips32_cache.h
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上传日期:2013-04-10
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文件大小:6k
- /*
- * mips32_cache.h
- *
- * Carsten Langgaard, carstenl@mips.com
- * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
- *
- * ########################################################################
- *
- * This program is free software; you can distribute it and/or modify it
- * under the terms of the GNU General Public License (Version 2) as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * ########################################################################
- *
- * Inline assembly cache operations.
- *
- * This file is the original r4cache.c file with modification that makes the
- * cache handling more generic.
- *
- * FIXME: Handle split L2 caches.
- *
- */
- #ifndef _MIPS_R4KCACHE_H
- #define _MIPS_R4KCACHE_H
- #include <asm/asm.h>
- #include <asm/cacheops.h>
- static inline void flush_icache_line_indexed(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Index_Invalidate_I));
- }
- static inline void flush_dcache_line_indexed(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Index_Writeback_Inv_D));
- }
- static inline void flush_scache_line_indexed(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Index_Writeback_Inv_SD));
- }
- static inline void flush_icache_line(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Hit_Invalidate_I));
- }
- static inline void flush_dcache_line(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Hit_Writeback_Inv_D));
- }
- static inline void invalidate_dcache_line(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Hit_Invalidate_D));
- }
- static inline void invalidate_scache_line(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Hit_Invalidate_SD));
- }
- static inline void flush_scache_line(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3nt"
- "cache %1, (%0)nt"
- ".set mips0nt"
- ".set reorder"
- :
- : "r" (addr),
- "i" (Hit_Writeback_Inv_SD));
- }
- /*
- * The next two are for badland addresses like signal trampolines.
- */
- static inline void protected_flush_icache_line(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3n"
- "1:tcache %1,(%0)n"
- "2:t.set mips0nt"
- ".set reordernt"
- ".sectiont__ex_table,"a"nt"
- STR(PTR)"t1b,2bnt"
- ".previous"
- :
- : "r" (addr),
- "i" (Hit_Invalidate_I));
- }
- static inline void protected_writeback_dcache_line(unsigned long addr)
- {
- __asm__ __volatile__(
- ".set noreordernt"
- ".set mips3n"
- "1:tcache %1,(%0)n"
- "2:t.set mips0nt"
- ".set reordernt"
- ".sectiont__ex_table,"a"nt"
- STR(PTR)"t1b,2bnt"
- ".previous"
- :
- : "r" (addr),
- "i" (Hit_Writeback_D));
- }
- #define cache_unroll(base,op)
- __asm__ __volatile__("
- .set noreorder;
- .set mips3;
- cache %1, (%0);
- .set mips0;
- .set reorder"
- :
- : "r" (base),
- "i" (op));
- static inline void blast_dcache(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = (start + dcache_size);
- while(start < end) {
- cache_unroll(start,Index_Writeback_Inv_D);
- start += dc_lsize;
- }
- }
- static inline void blast_dcache_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache_unroll(start,Hit_Writeback_Inv_D);
- start += dc_lsize;
- }
- }
- static inline void blast_dcache_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache_unroll(start,Index_Writeback_Inv_D);
- start += dc_lsize;
- }
- }
- static inline void blast_icache(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = (start + icache_size);
- while(start < end) {
- cache_unroll(start,Index_Invalidate_I);
- start += ic_lsize;
- }
- }
- static inline void blast_icache_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache_unroll(start,Hit_Invalidate_I);
- start += ic_lsize;
- }
- }
- static inline void blast_icache_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache_unroll(start,Index_Invalidate_I);
- start += ic_lsize;
- }
- }
- static inline void blast_scache(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = KSEG0 + scache_size;
- while(start < end) {
- cache_unroll(start,Index_Writeback_Inv_SD);
- start += sc_lsize;
- }
- }
- static inline void blast_scache_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache_unroll(start,Hit_Writeback_Inv_SD);
- start += sc_lsize;
- }
- }
- static inline void blast_scache_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache_unroll(start,Index_Writeback_Inv_SD);
- start += sc_lsize;
- }
- }
- #endif /* !(_MIPS_R4KCACHE_H) */