From de62893bc0725f8b5f0445250577cd7a10b2d8f8 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Mon, 13 Mar 2006 18:23:03 +0900 Subject: [MIPS] local_r4k_flush_cache_page fix If dcache_size != icache_size or dcache_size != scache_size, or set-associative cache, icache/scache does not flushed properly. Make blast_?cache_page_indexed() masks its index value correctly. Also, use physical address for physically indexed pcache/scache. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- arch/mips/mm/c-r4k.c | 13 +++++++++---- arch/mips/mm/c-tx39.c | 1 - 2 files changed, 9 insertions(+), 5 deletions(-) (limited to 'arch/mips') diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 0668e9bfce4..9572ed44f0d 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -375,6 +375,7 @@ static void r4k_flush_cache_mm(struct mm_struct *mm) struct flush_cache_page_args { struct vm_area_struct *vma; unsigned long addr; + unsigned long pfn; }; static inline void local_r4k_flush_cache_page(void *args) @@ -382,6 +383,7 @@ static inline void local_r4k_flush_cache_page(void *args) struct flush_cache_page_args *fcp_args = args; struct vm_area_struct *vma = fcp_args->vma; unsigned long addr = fcp_args->addr; + unsigned long paddr = fcp_args->pfn << PAGE_SHIFT; int exec = vma->vm_flags & VM_EXEC; struct mm_struct *mm = vma->vm_mm; pgd_t *pgdp; @@ -431,11 +433,12 @@ static inline void local_r4k_flush_cache_page(void *args) * Do indexed flush, too much work to get the (possible) TLB refills * to work correctly. */ - addr = INDEX_BASE + (addr & (dcache_size - 1)); if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc)) { - r4k_blast_dcache_page_indexed(addr); - if (exec && !cpu_icache_snoops_remote_store) - r4k_blast_scache_page_indexed(addr); + r4k_blast_dcache_page_indexed(cpu_has_pindexed_dcache ? + paddr : addr); + if (exec && !cpu_icache_snoops_remote_store) { + r4k_blast_scache_page_indexed(paddr); + } } if (exec) { if (cpu_has_vtag_icache) { @@ -455,6 +458,7 @@ static void r4k_flush_cache_page(struct vm_area_struct *vma, args.vma = vma; args.addr = addr; + args.pfn = pfn; on_each_cpu(local_r4k_flush_cache_page, &args, 1, 1); } @@ -956,6 +960,7 @@ static void __init probe_pcache(void) switch (c->cputype) { case CPU_20KC: case CPU_25KF: + c->dcache.flags |= MIPS_CACHE_PINDEX; case CPU_R10000: case CPU_R12000: case CPU_SB1: diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c index 7c572bea4a9..fe232e3988e 100644 --- a/arch/mips/mm/c-tx39.c +++ b/arch/mips/mm/c-tx39.c @@ -210,7 +210,6 @@ static void tx39_flush_cache_page(struct vm_area_struct *vma, unsigned long page * Do indexed flush, too much work to get the (possible) TLB refills * to work correctly. */ - page = (KSEG0 + (page & (dcache_size - 1))); if (cpu_has_dc_aliases || exec) tx39_blast_dcache_page_indexed(page); if (exec) -- cgit v1.2.3