From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/frv/mm/cache-page.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 arch/frv/mm/cache-page.c (limited to 'arch/frv/mm/cache-page.c') diff --git a/arch/frv/mm/cache-page.c b/arch/frv/mm/cache-page.c new file mode 100644 index 00000000000..683b5e34431 --- /dev/null +++ b/arch/frv/mm/cache-page.c @@ -0,0 +1,66 @@ +/* cache-page.c: whole-page cache wrangling functions for MMU linux + * + * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include +#include +#include +#include + +/*****************************************************************************/ +/* + * DCF takes a virtual address and the page may not currently have one + * - temporarily hijack a kmap_atomic() slot and attach the page to it + */ +void flush_dcache_page(struct page *page) +{ + unsigned long dampr2; + void *vaddr; + + dampr2 = __get_DAMPR(2); + + vaddr = kmap_atomic(page, __KM_CACHE); + + frv_dcache_writeback((unsigned long) vaddr, (unsigned long) vaddr + PAGE_SIZE); + + kunmap_atomic(vaddr, __KM_CACHE); + + if (dampr2) { + __set_DAMPR(2, dampr2); + __set_IAMPR(2, dampr2); + } + +} /* end flush_dcache_page() */ + +/*****************************************************************************/ +/* + * ICI takes a virtual address and the page may not currently have one + * - so we temporarily attach the page to a bit of virtual space so that is can be flushed + */ +void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, + unsigned long start, unsigned long len) +{ + unsigned long dampr2; + void *vaddr; + + dampr2 = __get_DAMPR(2); + + vaddr = kmap_atomic(page, __KM_CACHE); + + start = (start & ~PAGE_MASK) | (unsigned long) vaddr; + frv_cache_wback_inv(start, start + len); + + kunmap_atomic(vaddr, __KM_CACHE); + + if (dampr2) { + __set_DAMPR(2, dampr2); + __set_IAMPR(2, dampr2); + } + +} /* end flush_icache_user_range() */ -- cgit v1.2.3