From 68a2f7301ae3a97bf7b1713d20de7618c9b9a5f5 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Tue, 12 Oct 2010 11:29:01 -0500 Subject: ARM: imx: Add iram allocator functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Amit Kucheria Acked-by: Uwe Kleine-König Signed-off-by: Sascha Hauer --- arch/arm/plat-mxc/include/mach/iram.h | 41 +++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 arch/arm/plat-mxc/include/mach/iram.h (limited to 'arch/arm/plat-mxc/include/mach/iram.h') diff --git a/arch/arm/plat-mxc/include/mach/iram.h b/arch/arm/plat-mxc/include/mach/iram.h new file mode 100644 index 00000000000..022690c3370 --- /dev/null +++ b/arch/arm/plat-mxc/include/mach/iram.h @@ -0,0 +1,41 @@ +/* + * 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. + */ +#include + +#ifdef CONFIG_IRAM_ALLOC + +int __init iram_init(unsigned long base, unsigned long size); +void __iomem *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 __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr) +{ + return NULL; +} + +static inline void iram_free(unsigned long base, unsigned long size) {} + +#endif -- cgit v1.2.2