diff options
Diffstat (limited to 'arch/mips/mm/r4xx0.c')
| -rw-r--r-- | arch/mips/mm/r4xx0.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/arch/mips/mm/r4xx0.c b/arch/mips/mm/r4xx0.c index 05e093e92..c00d63bc8 100644 --- a/arch/mips/mm/r4xx0.c +++ b/arch/mips/mm/r4xx0.c @@ -3,7 +3,7 @@ * * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) * - * $Id: r4xx0.c,v 1.5 1997/06/28 23:27:20 ralf Exp $ + * $Id: r4xx0.c,v 1.4 1997/07/01 09:00:50 ralf Exp $ */ #include <linux/config.h> @@ -1856,7 +1856,7 @@ static inline void r4k_flush_tlb_all(void) set_entrylo1(0); BARRIER; - entry = 0; + entry = get_wired(); /* Blast 'em all away. */ while(entry < NTLB_ENTRIES) { @@ -2122,6 +2122,37 @@ static void r4k_show_regs(struct pt_regs * regs) printk("epc : %08lx\nStatus: %08lx\nCause : %08lx\n", regs->cp0_epc, regs->cp0_status, regs->cp0_cause); } + +static void r4k_add_wired_entry(unsigned long entrylo0, unsigned long entrylo1, + unsigned long entryhi, unsigned long pagemask) +{ + unsigned long flags; + unsigned long wired; + unsigned long old_pagemask; + unsigned long old_ctx; + + save_and_cli(flags); + /* Save old context and create impossible VPN2 value */ + old_ctx = (get_entryhi() & 0xff); + old_pagemask = get_pagemask(); + wired = get_wired(); + set_wired (wired + 1); + set_index (wired); + BARRIER; + set_pagemask (pagemask); + set_entryhi(entryhi); + set_entrylo0(entrylo0); + set_entrylo1(entrylo1); + BARRIER; + tlb_write_indexed(); + BARRIER; + + set_entryhi(old_ctx); + BARRIER; + set_pagemask (old_pagemask); + flush_tlb_all(); + restore_flags(flags); +} /* Detect and size the various r4k caches. */ static void probe_icache(unsigned long config) @@ -2567,6 +2598,8 @@ try_again: update_mmu_cache = r4k_update_mmu_cache; show_regs = r4k_show_regs; + + add_wired_entry = r4k_add_wired_entry; flush_cache_all(); write_32bit_cp0_register(CP0_WIRED, 0); |