diff options
| author | Rob Herring <r.herring@freescale.com> | 2010-01-22 14:55:59 -0200 |
|---|---|---|
| committer | Rob Herring <r.herring@freescale.com> | 2010-02-04 10:50:49 -0600 |
| commit | 34de1b36e15c5e38f70bdcad050667052598d769 (patch) | |
| tree | 45f4ba0547cfc1ad42e77f4c314b8133e0781447 /include | |
| parent | 964a5efab3fc3b1e74e6ad3b40df5d75fb13e41c (diff) | |
ENGR00120393-1 imx: Add iram allocator functions
Add iram allocation functions using GENERIC_ALLOCATOR. The
allocation size is 4KB multiples to guarantee alignment.
Signed-off-by: Rob Herring <r.herring@freescale.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iram_alloc.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/linux/iram_alloc.h b/include/linux/iram_alloc.h new file mode 100644 index 000000000000..12881aaa3d21 --- /dev/null +++ b/include/linux/iram_alloc.h @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. 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; 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., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301, USA. + */ + +#ifdef CONFIG_IRAM_ALLOC +int __init iram_init(unsigned long base, unsigned long size); +void *iram_alloc(unsigned int size, unsigned long *dma_addr); +void iram_free(unsigned long dma_addr, unsigned int size); +#else +static inline int __init iram_init(unsigned long base, unsigned long size) +{ + return -ENOMEM; +} +static inline void *iram_alloc(unsigned int size, unsigned long *dma_addr) +{ + return NULL; +} +static inline void iram_free(unsigned long base, unsigned long size) {} +#endif + |