mirror of https://gitee.com/openkylin/linux.git
162 lines
4.4 KiB
C
162 lines
4.4 KiB
C
/* arch/arm/mach-msm/io.c
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*
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* MSM7K, QSD io support
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*
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* Copyright (C) 2007 Google, Inc.
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* Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved.
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* Author: Brian Swetland <swetland@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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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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*/
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#include <linux/kernel.h>
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#include <linux/bug.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/export.h>
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#include <mach/hardware.h>
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#include <asm/page.h>
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#include <mach/msm_iomap.h>
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#include <asm/mach/map.h>
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#include "common.h"
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#define MSM_CHIP_DEVICE_TYPE(name, chip, mem_type) { \
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.virtual = (unsigned long) MSM_##name##_BASE, \
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.pfn = __phys_to_pfn(chip##_##name##_PHYS), \
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.length = chip##_##name##_SIZE, \
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.type = mem_type, \
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}
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#define MSM_DEVICE_TYPE(name, mem_type) \
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MSM_CHIP_DEVICE_TYPE(name, MSM, mem_type)
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#define MSM_CHIP_DEVICE(name, chip) \
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MSM_CHIP_DEVICE_TYPE(name, chip, MT_DEVICE)
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#define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
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#if defined(CONFIG_ARCH_MSM7X00A)
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static struct map_desc msm_io_desc[] __initdata = {
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MSM_DEVICE_TYPE(VIC, MT_DEVICE_NONSHARED),
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MSM_CHIP_DEVICE_TYPE(CSR, MSM7X00, MT_DEVICE_NONSHARED),
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MSM_DEVICE_TYPE(DMOV, MT_DEVICE_NONSHARED),
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MSM_CHIP_DEVICE_TYPE(GPIO1, MSM7X00, MT_DEVICE_NONSHARED),
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MSM_CHIP_DEVICE_TYPE(GPIO2, MSM7X00, MT_DEVICE_NONSHARED),
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MSM_DEVICE_TYPE(CLK_CTL, MT_DEVICE_NONSHARED),
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{
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.virtual = (unsigned long) MSM_SHARED_RAM_BASE,
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.pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
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.length = MSM_SHARED_RAM_SIZE,
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.type = MT_DEVICE,
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},
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#if defined(CONFIG_DEBUG_MSM_UART)
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{
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/* Must be last: virtual and pfn filled in by debug_ll_addr() */
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.length = SZ_4K,
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.type = MT_DEVICE_NONSHARED,
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}
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#endif
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};
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void __init msm_map_common_io(void)
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{
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size_t size = ARRAY_SIZE(msm_io_desc);
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/* Make sure the peripheral register window is closed, since
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* we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
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* pages are peripheral interface or not.
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*/
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asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
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#if defined(CONFIG_DEBUG_MSM_UART)
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#ifdef CONFIG_MMU
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debug_ll_addr(&msm_io_desc[size - 1].pfn,
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&msm_io_desc[size - 1].virtual);
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#endif
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msm_io_desc[size - 1].pfn = __phys_to_pfn(msm_io_desc[size - 1].pfn);
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#endif
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iotable_init(msm_io_desc, size);
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}
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#endif
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#ifdef CONFIG_ARCH_QSD8X50
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static struct map_desc qsd8x50_io_desc[] __initdata = {
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MSM_DEVICE(VIC),
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MSM_CHIP_DEVICE(CSR, QSD8X50),
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MSM_DEVICE(DMOV),
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MSM_CHIP_DEVICE(GPIO1, QSD8X50),
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MSM_CHIP_DEVICE(GPIO2, QSD8X50),
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MSM_DEVICE(CLK_CTL),
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MSM_DEVICE(SIRC),
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MSM_DEVICE(SCPLL),
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MSM_DEVICE(AD5),
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MSM_DEVICE(MDC),
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{
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.virtual = (unsigned long) MSM_SHARED_RAM_BASE,
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.pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
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.length = MSM_SHARED_RAM_SIZE,
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.type = MT_DEVICE,
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},
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};
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void __init msm_map_qsd8x50_io(void)
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{
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debug_ll_io_init();
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iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
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}
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#endif /* CONFIG_ARCH_QSD8X50 */
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#ifdef CONFIG_ARCH_MSM7X30
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static struct map_desc msm7x30_io_desc[] __initdata = {
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MSM_DEVICE(VIC),
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MSM_CHIP_DEVICE(CSR, MSM7X30),
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MSM_DEVICE(DMOV),
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MSM_CHIP_DEVICE(GPIO1, MSM7X30),
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MSM_CHIP_DEVICE(GPIO2, MSM7X30),
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MSM_DEVICE(CLK_CTL),
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MSM_DEVICE(CLK_CTL_SH2),
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MSM_DEVICE(AD5),
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MSM_DEVICE(MDC),
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MSM_DEVICE(ACC),
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MSM_DEVICE(SAW),
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MSM_DEVICE(GCC),
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MSM_DEVICE(TCSR),
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{
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.virtual = (unsigned long) MSM_SHARED_RAM_BASE,
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.pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
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.length = MSM_SHARED_RAM_SIZE,
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.type = MT_DEVICE,
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},
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};
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void __init msm_map_msm7x30_io(void)
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{
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debug_ll_io_init();
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iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
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}
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#endif /* CONFIG_ARCH_MSM7X30 */
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#ifdef CONFIG_ARCH_MSM7X00A
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void __iomem *__msm_ioremap_caller(phys_addr_t phys_addr, size_t size,
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unsigned int mtype, void *caller)
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{
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if (mtype == MT_DEVICE) {
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/* The peripherals in the 88000000 - D0000000 range
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* are only accessible by type MT_DEVICE_NONSHARED.
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* Adjust mtype as necessary to make this "just work."
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*/
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if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
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mtype = MT_DEVICE_NONSHARED;
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}
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return __arm_ioremap_caller(phys_addr, size, mtype, caller);
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}
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#endif
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