| /* |
| * fixmap.h: compile-time virtual memory allocation |
| * |
| * 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) 1998 Ingo Molnar |
| * |
| * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999 |
| */ |
| |
| #ifndef _ASM_FIXMAP_H |
| #define _ASM_FIXMAP_H |
| |
| #ifdef CONFIG_HIGHMEM |
| #include <linux/threads.h> |
| #include <linux/pgtable.h> |
| #include <asm/kmap_size.h> |
| |
| /* The map slots for temporary mappings via kmap_atomic/local(). */ |
| enum fixed_addresses { |
| FIX_KMAP_BEGIN, |
| FIX_KMAP_END = FIX_KMAP_BEGIN + |
| (KM_MAX_IDX * NR_CPUS * DCACHE_N_COLORS) - 1, |
| __end_of_fixed_addresses |
| }; |
| |
| #define FIXADDR_END (XCHAL_KSEG_CACHED_VADDR - PAGE_SIZE) |
| #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) |
| /* Enforce that FIXADDR_START is PMD aligned to handle cache aliasing */ |
| #define FIXADDR_START ((FIXADDR_END - FIXADDR_SIZE) & PMD_MASK) |
| #define FIXADDR_TOP (FIXADDR_START + FIXADDR_SIZE - PAGE_SIZE) |
| |
| #include <asm-generic/fixmap.h> |
| |
| #endif /* CONFIG_HIGHMEM */ |
| #endif |
