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8c27e6f305
Allow the timer register to be determined dynamically instead of at compile time. Use common virtual addresses for the registers across all MSM chips, and select the register mappings based on the detected CPU. Signed-off-by: David Brown <davidb@codeaurora.org>
168 lines
4.2 KiB
C
168 lines
4.2 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/init.h>
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#include <linux/io.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 <mach/board.h>
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#define MSM_CHIP_DEVICE(name, chip) { \
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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 = MT_DEVICE_NONSHARED, \
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}
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#define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
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#if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27) \
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|| defined(CONFIG_ARCH_MSM7X25)
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static struct map_desc msm_io_desc[] __initdata = {
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MSM_DEVICE(VIC),
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MSM_CHIP_DEVICE(CSR, MSM7X00),
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MSM_DEVICE(GPT),
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MSM_DEVICE(DMOV),
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MSM_DEVICE(GPIO1),
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MSM_DEVICE(GPIO2),
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MSM_DEVICE(CLK_CTL),
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#ifdef CONFIG_MSM_DEBUG_UART
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MSM_DEVICE(DEBUG_UART),
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#endif
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#ifdef CONFIG_ARCH_MSM7X30
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MSM_DEVICE(GCC),
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#endif
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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_common_io(void)
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{
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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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iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
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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_DEVICE(GPIO1),
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MSM_DEVICE(GPIO2),
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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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#ifdef CONFIG_MSM_DEBUG_UART
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MSM_DEVICE(DEBUG_UART),
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#endif
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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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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_MSM8X60
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static struct map_desc msm8x60_io_desc[] __initdata = {
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MSM_DEVICE(QGIC_DIST),
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MSM_DEVICE(QGIC_CPU),
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MSM_CHIP_DEVICE(TMR, MSM8X60),
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MSM_CHIP_DEVICE(TMR0, MSM8X60),
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MSM_DEVICE(ACC),
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MSM_DEVICE(GCC),
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};
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void __init msm_map_msm8x60_io(void)
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{
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iotable_init(msm8x60_io_desc, ARRAY_SIZE(msm8x60_io_desc));
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}
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#endif /* CONFIG_ARCH_MSM8X60 */
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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_DEVICE(GPIO1),
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MSM_DEVICE(GPIO2),
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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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#ifdef CONFIG_MSM_DEBUG_UART
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MSM_DEVICE(DEBUG_UART),
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#endif
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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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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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void __iomem *
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__msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
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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,
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__builtin_return_address(0));
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}
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EXPORT_SYMBOL(__msm_ioremap);
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