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author | Vinh Nguyen Huu Tuong <vhtnguyen@apm.com> | 2012-07-02 22:52:30 +0000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-01-10 15:08:37 +1100 |
commit | c19d82486216b1c674208f76fed6b9eb4ee45ad3 (patch) | |
tree | ddaa0f230e5be8b84e349c1aed873410e190c00a /arch/powerpc/include/asm/ppc4xx_ocm.h | |
parent | 0388c79c99ccb43f711af57d2e14fcd6a5f45a06 (diff) | |
download | linux-stable-c19d82486216b1c674208f76fed6b9eb4ee45ad3.tar.gz linux-stable-c19d82486216b1c674208f76fed6b9eb4ee45ad3.tar.bz2 linux-stable-c19d82486216b1c674208f76fed6b9eb4ee45ad3.zip |
powerpc/44x: Support OCM(On Chip Memory) for APM821xx SoC and Bluestone board
This patch consists of:
- Add driver for OCM component
- Export OCM Information at /sys/kernel/debug/ppc4xx_ocm/info
Signed-off-by: Vinh Nguyen Huu Tuong <vhtnguyen@apm.com>
Acked-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/ppc4xx_ocm.h')
-rw-r--r-- | arch/powerpc/include/asm/ppc4xx_ocm.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc4xx_ocm.h b/arch/powerpc/include/asm/ppc4xx_ocm.h new file mode 100644 index 000000000000..6ce904605538 --- /dev/null +++ b/arch/powerpc/include/asm/ppc4xx_ocm.h @@ -0,0 +1,45 @@ +/* + * PowerPC 4xx OCM memory allocation support + * + * (C) Copyright 2009, Applied Micro Circuits Corporation + * Victor Gallardo (vgallardo@amcc.com) + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 + */ + +#ifndef __ASM_POWERPC_PPC4XX_OCM_H__ +#define __ASM_POWERPC_PPC4XX_OCM_H__ + +#define PPC4XX_OCM_NON_CACHED 0 +#define PPC4XX_OCM_CACHED 1 + +#if defined(CONFIG_PPC4xx_OCM) + +void *ppc4xx_ocm_alloc(phys_addr_t *phys, int size, int align, + int flags, const char *owner); +void ppc4xx_ocm_free(const void *virt); + +#else + +#define ppc4xx_ocm_alloc(phys, size, align, flags, owner) NULL +#define ppc4xx_ocm_free(addr) ((void)0) + +#endif /* CONFIG_PPC4xx_OCM */ + +#endif /* __ASM_POWERPC_PPC4XX_OCM_H__ */ |