patch-2.4.22 linux-2.4.22/arch/mips/mm/r5k-sc.c

• Lines: 116
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/arch/mips/mm/r5k-sc.c
• Orig date: 2002-11-28 15:53:10.000000000 -0800

diff -urN linux-2.4.21/arch/mips/mm/r5k-sc.c linux-2.4.22/arch/mips/mm/r5k-sc.c
@@ -1,115 +0,0 @@
-/*
- * Copyright (C) 1997, 2001 Ralf Baechle (ralf@gnu.org),
- * derived from r4xx0.c by David S. Miller (dm@engr.sgi.com).
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-
-#include <asm/mipsregs.h>
-#include <asm/bcache.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/mmu_context.h>
-#include <asm/cacheops.h>
-
-/* Secondary cache size in bytes, if present.  */
-static unsigned long scache_size;
-
-#define SC_LINE 32
-#define SC_PAGE (128*SC_LINE)
-
-#define cache_op(base,op)                   \
-__asm__ __volatile__("				\
-		.set noreorder;                 \
-		.set mips3;                     \
-		cache %1, (%0);                 \
-		.set mips0;                     \
-		.set reorder"                   \
-		:                               \
-		: "r" (base),                   \
-		  "i" (op));
-
-static inline void blast_r5000_scache(void)
-{
-	unsigned long start = KSEG0;
-	unsigned long end = KSEG0 + scache_size;
-
-	while(start < end) {
-		cache_op(start, R5K_Page_Invalidate_S);
-		start += SC_PAGE;
-	}
-}
-
-static void r5k_dma_cache_inv_sc(unsigned long addr, unsigned long size)
-{
-	unsigned long end, a;
-
-	if (size >= scache_size) {
-		blast_r5000_scache();
-		return;
-	}
-
-	/* On the R5000 secondary cache we cannot
-	 * invalidate less than a page at a time.
-	 * The secondary cache is physically indexed, write-through.
-	 */
-	a = addr & ~(SC_PAGE - 1);
-	end = (addr + size - 1) & ~(SC_PAGE - 1);
-	while (a <= end) {
-		cache_op(a, R5K_Page_Invalidate_S);
-		a += SC_PAGE;
-	}
-}
-
-static void r5k_sc_enable(void)
-{
-        unsigned long flags;
-
-	__save_and_cli(flags);
-	change_cp0_config(CONF_SE, CONF_SE);
-	blast_r5000_scache();
-	__restore_flags(flags);
-}
-
-static void r5k_sc_disable(void)
-{
-        unsigned long flags;
-
-	__save_and_cli(flags);
-	blast_r5000_scache();
-	change_cp0_config(CONF_SE, 0);
-	__restore_flags(flags);
-}
-
-static inline int __init r5k_sc_probe(void)
-{
-	unsigned long config = read_32bit_cp0_register(CP0_CONFIG);
-
-	if(config & CONF_SC)
-		return(0);
-
-	scache_size = (512*1024) << ((config >> 20)&3);
-
-	printk("R5000 SCACHE size %ldK, linesize 32 bytes.\n",
-			scache_size >> 10);
-
-	return 1;
-}
-
-struct bcache_ops r5k_sc_ops = {
-	r5k_sc_enable,
-	r5k_sc_disable,
-	r5k_dma_cache_inv_sc,
-	r5k_dma_cache_inv_sc
-};
-
-void __init r5k_sc_init(void)
-{
-	if (r5k_sc_probe()) {
-		r5k_sc_enable();
-		bcops = &r5k_sc_ops;
-	}
-}