/* arch/arm/mach-msm/io.c * * MSM7K io support * * Copyright (C) 2007 Google, Inc. * Author: Brian Swetland <swetland@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/init.h> #include <asm/hardware.h> #include <asm/io.h> #include <asm/page.h> #include <asm/arch/msm_iomap.h> #include <asm/mach/map.h> #include <asm/arch/board.h> #define MSM_DEVICE(name) { \ .virtual = MSM_##name##_BASE, \ .pfn = __phys_to_pfn(MSM_##name##_PHYS), \ .length = MSM_##name##_SIZE, \ .type = MT_DEVICE_NONSHARED, \ } static struct map_desc msm_io_desc[] __initdata = { MSM_DEVICE(VIC), MSM_DEVICE(CSR), MSM_DEVICE(GPT), MSM_DEVICE(DMOV), MSM_DEVICE(UART1), MSM_DEVICE(UART2), MSM_DEVICE(UART3), MSM_DEVICE(I2C), MSM_DEVICE(GPIO1), MSM_DEVICE(GPIO2), MSM_DEVICE(HSUSB), MSM_DEVICE(CLK_CTL), MSM_DEVICE(PMDH), MSM_DEVICE(EMDH), MSM_DEVICE(MDP), { .virtual = MSM_SHARED_RAM_BASE, .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS), .length = MSM_SHARED_RAM_SIZE, .type = MT_DEVICE, }, }; void __init msm_map_common_io(void) { /* Make sure the peripheral register window is closed, since * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which * pages are peripheral interface or not. */ asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0)); iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc)); } void __iomem * __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) { if (mtype == MT_DEVICE) { /* The peripherals in the 88000000 - D0000000 range * are only accessable by type MT_DEVICE_NONSHARED. * Adjust mtype as necessary to make this "just work." */ if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000)) mtype = MT_DEVICE_NONSHARED; } return __arm_ioremap(phys_addr, size, mtype); }