68a2f7301a
Add IRAM(Internal RAM) allocation functions using GENERIC_ALLOCATOR. The allocation size is 4KB multiples to guarantee alignment. The idea for these functions is for i.MX platforms to use them to dynamically allocate IRAM usage. Applies on 2.6.36-rc7 Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com> Reviewed-by: Amit Kucheria <amit.kucheria@canonical.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/*
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* Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <linux/errno.h>
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#ifdef CONFIG_IRAM_ALLOC
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int __init iram_init(unsigned long base, unsigned long size);
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void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr);
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void iram_free(unsigned long dma_addr, unsigned int size);
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#else
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static inline int __init iram_init(unsigned long base, unsigned long size)
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{
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return -ENOMEM;
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}
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static inline void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr)
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{
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return NULL;
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}
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static inline void iram_free(unsigned long base, unsigned long size) {}
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#endif
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