/* * arch/arm/mach-tegra/io.c * * Copyright (C) 2010 Google, Inc. * * Author: * Colin Cross <ccross@google.com> * Erik Gilling <konkers@google.com> * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * 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. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/mm.h> #include <linux/io.h> #include <mach/hardware.h> #include <asm/page.h> #include <asm/mach/map.h> #include "board.h" static struct map_desc tegra_io_desc[] __initdata = { { .virtual = IO_PPSB_VIRT, .pfn = __phys_to_pfn(IO_PPSB_PHYS), .length = IO_PPSB_SIZE, .type = MT_DEVICE, }, { .virtual = IO_APB_VIRT, .pfn = __phys_to_pfn(IO_APB_PHYS), .length = IO_APB_SIZE, .type = MT_DEVICE, }, { .virtual = IO_CPU_VIRT, .pfn = __phys_to_pfn(IO_CPU_PHYS), .length = IO_CPU_SIZE, .type = MT_DEVICE, }, { .virtual = IO_IRAM_VIRT, .pfn = __phys_to_pfn(IO_IRAM_PHYS), .length = IO_IRAM_SIZE, .type = MT_DEVICE, }, }; void __init tegra_map_common_io(void) { iotable_init(tegra_io_desc, ARRAY_SIZE(tegra_io_desc)); } /* * Intercept ioremap() requests for addresses in our fixed mapping regions. */ void __iomem *tegra_ioremap(unsigned long p, size_t size, unsigned int type) { void __iomem *v = IO_ADDRESS(p); if (v == NULL) v = __arm_ioremap(p, size, type); return v; } EXPORT_SYMBOL(tegra_ioremap); void tegra_iounmap(volatile void __iomem *addr) { unsigned long virt = (unsigned long)addr; if (virt >= VMALLOC_START && virt < VMALLOC_END) __iounmap(addr); } EXPORT_SYMBOL(tegra_iounmap);