diff options
Diffstat (limited to 'arch/arm/mach-imx/iram_alloc.c')
-rw-r--r-- | arch/arm/mach-imx/iram_alloc.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/arch/arm/mach-imx/iram_alloc.c b/arch/arm/mach-imx/iram_alloc.c deleted file mode 100644 index e05cf407db65..000000000000 --- a/arch/arm/mach-imx/iram_alloc.c +++ /dev/null @@ -1,73 +0,0 @@ -/* - * 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 <linux/kernel.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/genalloc.h> -#include "linux/platform_data/imx-iram.h" - -static unsigned long iram_phys_base; -static void __iomem *iram_virt_base; -static struct gen_pool *iram_pool; - -static inline void __iomem *iram_phys_to_virt(unsigned long p) -{ - return iram_virt_base + (p - iram_phys_base); -} - -void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr) -{ - if (!iram_pool) - return NULL; - - *dma_addr = gen_pool_alloc(iram_pool, size); - pr_debug("iram alloc - %dB@0x%lX\n", size, *dma_addr); - if (!*dma_addr) - return NULL; - return iram_phys_to_virt(*dma_addr); -} -EXPORT_SYMBOL(iram_alloc); - -void iram_free(unsigned long addr, unsigned int size) -{ - if (!iram_pool) - return; - - gen_pool_free(iram_pool, addr, size); -} -EXPORT_SYMBOL(iram_free); - -int __init iram_init(unsigned long base, unsigned long size) -{ - iram_phys_base = base; - - iram_pool = gen_pool_create(PAGE_SHIFT, -1); - if (!iram_pool) - return -ENOMEM; - - gen_pool_add(iram_pool, base, size, -1); - iram_virt_base = ioremap(iram_phys_base, size); - if (!iram_virt_base) - return -EIO; - - pr_debug("i.MX IRAM pool: %ld KB@0x%p\n", size / 1024, iram_virt_base); - return 0; -} |