diff options
| author | Keith Packard <keithp@keithp.com> | 2008-10-30 19:37:09 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-31 10:12:38 +0100 |
| commit | fd9409343521eac22b6ed51686128a643c7c976b (patch) | |
| tree | d70e3f009a29a7bbfe68b956608854db416bc2af /include | |
| parent | 721d5dfe7e516954c501d5e9d0dfab379cf4241a (diff) | |
x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmaps
Impact: introduce new APIs, separate kmap code from CONFIG_HIGHMEM
This takes the code used for CONFIG_HIGHMEM memory mappings except that
it's designed for dynamic IO resource mapping.
These fixmaps are available even with CONFIG_HIGHMEM turned off.
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/iomap.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/asm-x86/iomap.h b/include/asm-x86/iomap.h new file mode 100644 index 00000000000..c1f06289b14 --- /dev/null +++ b/include/asm-x86/iomap.h @@ -0,0 +1,30 @@ +/* + * Copyright © 2008 Ingo Molnar + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/uaccess.h> +#include <asm/cacheflush.h> +#include <asm/pgtable.h> +#include <asm/tlbflush.h> + +void * +iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot); + +void +iounmap_atomic(void *kvaddr, enum km_type type); |