X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fcoldfire%2Ffiles-2.6.31%2Farch%2Fm68k%2Finclude%2Fasm%2Fcf_pgalloc.h;fp=target%2Flinux%2Fcoldfire%2Ffiles-2.6.31%2Farch%2Fm68k%2Finclude%2Fasm%2Fcf_pgalloc.h;h=de3916762af534cf1dbfdb0c9df9a2f6e99de57e;hb=d066a4c712aae3cd1aaa5108f7cd2cae81c6343b;hp=0000000000000000000000000000000000000000;hpb=db689e1d5c4cd828ee29aebe03145c00759b5dd4;p=openwrt%2Fopenwrt.git

diff --git a/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgalloc.h b/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgalloc.h
new file mode 100644
index 0000000000..de3916762a
--- /dev/null
+++ b/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_pgalloc.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+#ifndef M68K_CF_PGALLOC_H
+#define M68K_CF_PGALLOC_H
+#include <linux/highmem.h>
+#include <asm/coldfire.h>
+#include <asm/page.h>
+#include <asm/cf_tlbflush.h>
+#include <asm/cf_cacheflush.h>
+
+extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+	free_page((unsigned long) pte);
+}
+
+extern const char bad_pmd_string[];
+
+extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+	unsigned long address)
+{
+	unsigned long page = __get_free_page(GFP_KERNEL|__GFP_REPEAT);
+
+	if (!page)
+		return NULL;
+
+	memset((void *)page, 0, PAGE_SIZE);
+	return (pte_t *) (page);
+}
+
+extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
+{
+	return (pmd_t *) pgd;
+}
+
+#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })
+#define pmd_alloc_one(mm, address)      ({ BUG(); ((pmd_t *)2); })
+
+#define pte_alloc_one_fast(mm, addr) pte_alloc_one(mm, addr)
+
+#define pmd_populate(mm, pmd, page) (pmd_val(*pmd) = \
+	(unsigned long)(page_address(page)))
+
+#define pmd_populate_kernel(mm, pmd, pte) (pmd_val(*pmd) = (unsigned long)(pte))
+
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *page, unsigned long address)
+{
+	__free_page(page);
+}
+
+#define __pmd_free_tlb(tlb, pmd, addr) do { } while (0)
+
+static inline struct page *pte_alloc_one(struct mm_struct *mm,
+	unsigned long address)
+{
+	struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
+	pte_t *pte;
+
+	if (!page)
+		return NULL;
+
+	pte = kmap(page);
+//	if (pte) {
+		clear_page(pte);
+		__flush_page_to_ram(pte);
+		flush_tlb_kernel_page(pte);
+		nocache_page(pte);
+//	}
+	kunmap(page);
+
+	return page;
+}
+
+extern inline void pte_free(struct mm_struct *mm, struct page *page)
+{
+	__free_page(page);
+}
+
+/*
+ * In our implementation, each pgd entry contains 1 pmd that is never allocated
+ * or freed.  pgd_present is always 1, so this should never be called. -NL
+ */
+#define pmd_free(mm, pmd) BUG()
+
+extern inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	free_page((unsigned long) pgd);
+}
+
+extern inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+     pgd_t *new_pgd;
+
+     new_pgd = (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_NOWARN);
+     if (!new_pgd)
+	     return NULL;
+     memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
+     memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
+     return new_pgd;
+}
+
+#define pgd_populate(mm, pmd, pte) BUG()
+
+#endif /* M68K_CF_PGALLOC_H */