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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/tile/include/asm/highmem.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/tile/include/asm/highmem.h')
-rw-r--r--arch/tile/include/asm/highmem.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/tile/include/asm/highmem.h b/arch/tile/include/asm/highmem.h
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+/*
+ * Copyright (C) 1999 Gerhard Wichert, Siemens AG
+ * Gerhard.Wichert@pdb.siemens.de
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * 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, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ *
+ * Used in CONFIG_HIGHMEM systems for memory pages which
+ * are not addressable by direct kernel virtual addresses.
+ *
+ */
+
+#ifndef _ASM_TILE_HIGHMEM_H
+#define _ASM_TILE_HIGHMEM_H
+
+#include <linux/interrupt.h>
+#include <linux/threads.h>
+#include <asm/tlbflush.h>
+#include <asm/homecache.h>
+
+/* declarations for highmem.c */
+extern unsigned long highstart_pfn, highend_pfn;
+
+extern pte_t *pkmap_page_table;
+
+/*
+ * Ordering is:
+ *
+ * FIXADDR_TOP
+ * fixed_addresses
+ * FIXADDR_START
+ * temp fixed addresses
+ * FIXADDR_BOOT_START
+ * Persistent kmap area
+ * PKMAP_BASE
+ * VMALLOC_END
+ * Vmalloc area
+ * VMALLOC_START
+ * high_memory
+ */
+#define LAST_PKMAP_MASK (LAST_PKMAP-1)
+#define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT)
+#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
+
+void *kmap_high(struct page *page);
+void kunmap_high(struct page *page);
+void *kmap(struct page *page);
+void kunmap(struct page *page);
+void *kmap_fix_kpte(struct page *page, int finished);
+
+/* This macro is used only in map_new_virtual() to map "page". */
+#define kmap_prot page_to_kpgprot(page)
+
+void *kmap_atomic(struct page *page);
+void __kunmap_atomic(void *kvaddr);
+void *kmap_atomic_pfn(unsigned long pfn);
+void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot);
+struct page *kmap_atomic_to_page(void *ptr);
+void *kmap_atomic_prot(struct page *page, pgprot_t prot);
+void kmap_atomic_fix_kpte(struct page *page, int finished);
+
+#define flush_cache_kmaps() do { } while (0)
+
+#endif /* _ASM_TILE_HIGHMEM_H */