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[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 5

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The attached patches provides part 5 of an architecture implementation for the
Tensilica Xtensa CPU series.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chris Zankel
2005-06-23 22:01:24 -07:00
committed by Linus Torvalds
parent 249ac17e96
commit 3f65ce4d14
6 changed files with 1800 additions and 0 deletions
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76
arch/xtensa/mm/pgtable.c Normal file
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/*
* arch/xtensa/mm/fault.c
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 - 2005 Tensilica Inc.
*
* Chris Zankel <chris@zankel.net>
*/
#if (DCACHE_SIZE > PAGE_SIZE)
pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
pte_t *pte, p;
int color = ADDR_COLOR(address);
int i;
p = (pte_t*) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, COLOR_ORDER);
if (likely(p)) {
struct page *page;
for (i = 0; i < COLOR_SIZE; i++, p++) {
page = virt_to_page(pte);
set_page_count(page, 1);
ClearPageCompound(page);
if (ADDR_COLOR(p) == color)
pte = p;
else
free_page(p);
}
clear_page(pte);
}
return pte;
}
#ifdef PROFILING
int mask;
int hit;
int flush;
#endif
struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address)
{
struct page *page, p;
int color = ADDR_COLOR(address);
p = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
if (likely(p)) {
for (i = 0; i < PAGE_ORDER; i++) {
set_page_count(p, 1);
ClearPageCompound(p);
if (PADDR_COLOR(page_address(pg)) == color)
page = p;
else
free_page(p);
}
clear_highpage(page);
}
return page;
}
#endif