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

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>

1 files changed, 76 insertions, 0 deletions

diff --git a/arch/xtensa/mm/pgtable.c b/arch/xtensa/mm/pgtable.c
new file mode 100644
index 000000000000..e5e119c820e4
--- /dev/null
+++ b/arch/xtensa/mm/pgtable.c
@@ -0,0 +1,76 @@
+/*
+ * 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
+
+
+