r4kcache.h
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上传日期:2013-02-24
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- /*
- * r4kcache.h: Inline assembly cache operations.
- *
- * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
- *
- * $Id: r4kcache.h,v 1.7 1997/12/18 13:00:45 ralf Exp $
- *
- * FIXME: Handle split L2 caches.
- */
- #ifndef _MIPS_R4KCACHE_H
- #define _MIPS_R4KCACHE_H
- #include <asm/asm.h>
- #include <asm/cacheops.h>
- extern 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));
- }
- extern 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));
- }
- extern 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));
- }
- extern 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));
- }
- extern 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));
- }
- extern 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));
- }
- extern 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));
- }
- extern 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.
- */
- extern 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));
- }
- extern 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 cache16_unroll32(base,op)
- __asm__ __volatile__("
- .set noreorder;
- .set mips3;
- cache %1, 0x000(%0); cache %1, 0x010(%0);
- cache %1, 0x020(%0); cache %1, 0x030(%0);
- cache %1, 0x040(%0); cache %1, 0x050(%0);
- cache %1, 0x060(%0); cache %1, 0x070(%0);
- cache %1, 0x080(%0); cache %1, 0x090(%0);
- cache %1, 0x0a0(%0); cache %1, 0x0b0(%0);
- cache %1, 0x0c0(%0); cache %1, 0x0d0(%0);
- cache %1, 0x0e0(%0); cache %1, 0x0f0(%0);
- cache %1, 0x100(%0); cache %1, 0x110(%0);
- cache %1, 0x120(%0); cache %1, 0x130(%0);
- cache %1, 0x140(%0); cache %1, 0x150(%0);
- cache %1, 0x160(%0); cache %1, 0x170(%0);
- cache %1, 0x180(%0); cache %1, 0x190(%0);
- cache %1, 0x1a0(%0); cache %1, 0x1b0(%0);
- cache %1, 0x1c0(%0); cache %1, 0x1d0(%0);
- cache %1, 0x1e0(%0); cache %1, 0x1f0(%0);
- .set mips0;
- .set reorder"
- :
- : "r" (base),
- "i" (op));
- extern inline void blast_dcache16(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = (start + dcache_size);
- while(start < end) {
- cache16_unroll32(start,Index_Writeback_Inv_D);
- start += 0x200;
- }
- }
- extern inline void blast_dcache16_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache16_unroll32(start,Hit_Writeback_Inv_D);
- start += 0x200;
- }
- }
- extern inline void blast_dcache16_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache16_unroll32(start,Index_Writeback_Inv_D);
- start += 0x200;
- }
- }
- extern inline void blast_icache16(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = (start + icache_size);
- while(start < end) {
- cache16_unroll32(start,Index_Invalidate_I);
- start += 0x200;
- }
- }
- extern inline void blast_icache16_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache16_unroll32(start,Hit_Invalidate_I);
- start += 0x200;
- }
- }
- extern inline void blast_icache16_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache16_unroll32(start,Index_Invalidate_I);
- start += 0x200;
- }
- }
- extern inline void blast_scache16(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = KSEG0 + scache_size;
- while(start < end) {
- cache16_unroll32(start,Index_Writeback_Inv_SD);
- start += 0x200;
- }
- }
- extern inline void blast_scache16_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache16_unroll32(start,Hit_Writeback_Inv_SD);
- start += 0x200;
- }
- }
- extern inline void blast_scache16_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache16_unroll32(start,Index_Writeback_Inv_SD);
- start += 0x200;
- }
- }
- #define cache32_unroll32(base,op)
- __asm__ __volatile__("
- .set noreorder;
- .set mips3;
- cache %1, 0x000(%0); cache %1, 0x020(%0);
- cache %1, 0x040(%0); cache %1, 0x060(%0);
- cache %1, 0x080(%0); cache %1, 0x0a0(%0);
- cache %1, 0x0c0(%0); cache %1, 0x0e0(%0);
- cache %1, 0x100(%0); cache %1, 0x120(%0);
- cache %1, 0x140(%0); cache %1, 0x160(%0);
- cache %1, 0x180(%0); cache %1, 0x1a0(%0);
- cache %1, 0x1c0(%0); cache %1, 0x1e0(%0);
- cache %1, 0x200(%0); cache %1, 0x220(%0);
- cache %1, 0x240(%0); cache %1, 0x260(%0);
- cache %1, 0x280(%0); cache %1, 0x2a0(%0);
- cache %1, 0x2c0(%0); cache %1, 0x2e0(%0);
- cache %1, 0x300(%0); cache %1, 0x320(%0);
- cache %1, 0x340(%0); cache %1, 0x360(%0);
- cache %1, 0x380(%0); cache %1, 0x3a0(%0);
- cache %1, 0x3c0(%0); cache %1, 0x3e0(%0);
- .set mips0;
- .set reorder"
- :
- : "r" (base),
- "i" (op));
- extern inline void blast_dcache32(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = (start + dcache_size);
- while(start < end) {
- cache32_unroll32(start,Index_Writeback_Inv_D);
- start += 0x400;
- }
- }
- /*
- * Call this function only with interrupts disabled or R4600 V2.0 may blow
- * up on you.
- *
- * R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D,
- * Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Excl_D will only
- * operate correctly if the internal data cache refill buffer is empty. These
- * CACHE instructions should be separated from any potential data cache miss
- * by a load instruction to an uncached address to empty the response buffer."
- * (Revision 2.0 device errata from IDT available on http://www.idt.com/
- * in .pdf format.)
- */
- extern inline void blast_dcache32_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- /*
- * Sigh ... workaround for R4600 v1.7 bug. Explanation see above.
- */
- *(volatile unsigned long *)KSEG1;
- __asm__ __volatile__("nop;nop;nop;nop");
- while(start < end) {
- cache32_unroll32(start,Hit_Writeback_Inv_D);
- start += 0x400;
- }
- }
- extern inline void blast_dcache32_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache32_unroll32(start,Index_Writeback_Inv_D);
- start += 0x400;
- }
- }
- extern inline void blast_icache32(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = (start + icache_size);
- while(start < end) {
- cache32_unroll32(start,Index_Invalidate_I);
- start += 0x400;
- }
- }
- extern inline void blast_icache32_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache32_unroll32(start,Hit_Invalidate_I);
- start += 0x400;
- }
- }
- extern inline void blast_icache32_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = (start + PAGE_SIZE);
- while(start < end) {
- cache32_unroll32(start,Index_Invalidate_I);
- start += 0x400;
- }
- }
- extern inline void blast_scache32(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = KSEG0 + scache_size;
- while(start < end) {
- cache32_unroll32(start,Index_Writeback_Inv_SD);
- start += 0x400;
- }
- }
- extern inline void blast_scache32_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache32_unroll32(start,Hit_Writeback_Inv_SD);
- start += 0x400;
- }
- }
- extern inline void blast_scache32_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache32_unroll32(start,Index_Writeback_Inv_SD);
- start += 0x400;
- }
- }
- #define cache64_unroll32(base,op)
- __asm__ __volatile__("
- .set noreorder;
- .set mips3;
- cache %1, 0x000(%0); cache %1, 0x040(%0);
- cache %1, 0x080(%0); cache %1, 0x0c0(%0);
- cache %1, 0x100(%0); cache %1, 0x140(%0);
- cache %1, 0x180(%0); cache %1, 0x1c0(%0);
- cache %1, 0x200(%0); cache %1, 0x240(%0);
- cache %1, 0x280(%0); cache %1, 0x2c0(%0);
- cache %1, 0x300(%0); cache %1, 0x340(%0);
- cache %1, 0x380(%0); cache %1, 0x3c0(%0);
- cache %1, 0x400(%0); cache %1, 0x440(%0);
- cache %1, 0x480(%0); cache %1, 0x4c0(%0);
- cache %1, 0x500(%0); cache %1, 0x540(%0);
- cache %1, 0x580(%0); cache %1, 0x5c0(%0);
- cache %1, 0x600(%0); cache %1, 0x640(%0);
- cache %1, 0x680(%0); cache %1, 0x6c0(%0);
- cache %1, 0x700(%0); cache %1, 0x740(%0);
- cache %1, 0x780(%0); cache %1, 0x7c0(%0);
- .set mips0;
- .set reorder"
- :
- : "r" (base),
- "i" (op));
- extern inline void blast_scache64(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = KSEG0 + scache_size;
- while(start < end) {
- cache64_unroll32(start,Index_Writeback_Inv_SD);
- start += 0x800;
- }
- }
- extern inline void blast_scache64_page(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache64_unroll32(start,Hit_Writeback_Inv_SD);
- start += 0x800;
- }
- }
- extern inline void blast_scache64_page_indexed(unsigned long page)
- {
- unsigned long start = page;
- unsigned long end = page + PAGE_SIZE;
- while(start < end) {
- cache64_unroll32(start,Index_Writeback_Inv_SD);
- start += 0x800;
- }
- }
- #define cache128_unroll32(base,op)
- __asm__ __volatile__("
- .set noreorder;
- .set mips3;
- cache %1, 0x000(%0); cache %1, 0x080(%0);
- cache %1, 0x100(%0); cache %1, 0x180(%0);
- cache %1, 0x200(%0); cache %1, 0x280(%0);
- cache %1, 0x300(%0); cache %1, 0x380(%0);
- cache %1, 0x400(%0); cache %1, 0x480(%0);
- cache %1, 0x500(%0); cache %1, 0x580(%0);
- cache %1, 0x600(%0); cache %1, 0x680(%0);
- cache %1, 0x700(%0); cache %1, 0x780(%0);
- cache %1, 0x800(%0); cache %1, 0x880(%0);
- cache %1, 0x900(%0); cache %1, 0x980(%0);
- cache %1, 0xa00(%0); cache %1, 0xa80(%0);
- cache %1, 0xb00(%0); cache %1, 0xb80(%0);
- cache %1, 0xc00(%0); cache %1, 0xc80(%0);
- cache %1, 0xd00(%0); cache %1, 0xd80(%0);
- cache %1, 0xe00(%0); cache %1, 0xe80(%0);
- cache %1, 0xf00(%0); cache %1, 0xf80(%0);
- .set mips0;
- .set reorder"
- :
- : "r" (base),
- "i" (op));
- extern inline void blast_scache128(void)
- {
- unsigned long start = KSEG0;
- unsigned long end = KSEG0 + scache_size;
- while(start < end) {
- cache128_unroll32(start,Index_Writeback_Inv_SD);
- start += 0x1000;
- }
- }
- extern inline void blast_scache128_page(unsigned long page)
- {
- cache128_unroll32(page,Hit_Writeback_Inv_SD);
- }
- extern inline void blast_scache128_page_indexed(unsigned long page)
- {
- cache128_unroll32(page,Index_Writeback_Inv_SD);
- }
- #endif /* !(_MIPS_R4KCACHE_H) */