arch/arm/mach-msm/io.c

   1 /* arch/arm/mach-msm/io.c
   2  *
   3  * MSM7K, QSD io support
   4  *
   5  * Copyright (C) 2007 Google, Inc.
   6  * Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved.
   7  * Author: Brian Swetland <swetland@google.com>
   8  *
   9  * This software is licensed under the terms of the GNU General Public
  10  * License version 2, as published by the Free Software Foundation, and
  11  * may be copied, distributed, and modified under those terms.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/bug.h>
  22 #include <linux/init.h>
  23 #include <linux/io.h>
  24 #include <linux/export.h>
  25
  26 #include <mach/hardware.h>
  27 #include <asm/page.h>
  28 #include <mach/msm_iomap.h>
  29 #include <asm/mach/map.h>
  30
  31 #include "common.h"
  32
  33 #define MSM_CHIP_DEVICE_TYPE(name, chip, mem_type) {                          \
  34                 .virtual = (unsigned long) MSM_##name##_BASE, \
  35                 .pfn = __phys_to_pfn(chip##_##name##_PHYS), \
  36                 .length = chip##_##name##_SIZE, \
  37                 .type = mem_type, \
  38          }
  39
  40 #define MSM_DEVICE_TYPE(name, mem_type) \
  41                 MSM_CHIP_DEVICE_TYPE(name, MSM, mem_type)
  42 #define MSM_CHIP_DEVICE(name, chip) \
  43                 MSM_CHIP_DEVICE_TYPE(name, chip, MT_DEVICE)
  44 #define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
  45
  46 #if defined(CONFIG_ARCH_MSM7X00A)
  47 static struct map_desc msm_io_desc[] __initdata = {
  48         MSM_DEVICE_TYPE(VIC, MT_DEVICE_NONSHARED),
  49         MSM_CHIP_DEVICE_TYPE(CSR, MSM7X00, MT_DEVICE_NONSHARED),
  50         MSM_DEVICE_TYPE(DMOV, MT_DEVICE_NONSHARED),
  51         MSM_CHIP_DEVICE_TYPE(GPIO1, MSM7X00, MT_DEVICE_NONSHARED),
  52         MSM_CHIP_DEVICE_TYPE(GPIO2, MSM7X00, MT_DEVICE_NONSHARED),
  53         MSM_DEVICE_TYPE(CLK_CTL, MT_DEVICE_NONSHARED),
  54         {
  55                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  56                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  57                 .length =   MSM_SHARED_RAM_SIZE,
  58                 .type =     MT_DEVICE,
  59         },
  60 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  61                 defined(CONFIG_DEBUG_MSM_UART3)
  62         {
  63                 /* Must be last: virtual and pfn filled in by debug_ll_addr() */
  64                 .length = SZ_4K,
  65                 .type = MT_DEVICE_NONSHARED,
  66         }
  67 #endif
  68 };
  69
  70 void __init msm_map_common_io(void)
  71 {
  72         size_t size = ARRAY_SIZE(msm_io_desc);
  73
  74         /* Make sure the peripheral register window is closed, since
  75          * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
  76          * pages are peripheral interface or not.
  77          */
  78         asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
  79 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  80                 defined(CONFIG_DEBUG_MSM_UART3)
  81         debug_ll_addr(&msm_io_desc[size - 1].pfn,
  82                       &msm_io_desc[size - 1].virtual);
  83         msm_io_desc[size - 1].pfn = __phys_to_pfn(msm_io_desc[size - 1].pfn);
  84 #endif
  85         iotable_init(msm_io_desc, size);
  86 }
  87 #endif
  88
  89 #ifdef CONFIG_ARCH_QSD8X50
  90 static struct map_desc qsd8x50_io_desc[] __initdata = {
  91         MSM_DEVICE(VIC),
  92         MSM_CHIP_DEVICE(CSR, QSD8X50),
  93         MSM_DEVICE(DMOV),
  94         MSM_CHIP_DEVICE(GPIO1, QSD8X50),
  95         MSM_CHIP_DEVICE(GPIO2, QSD8X50),
  96         MSM_DEVICE(CLK_CTL),
  97         MSM_DEVICE(SIRC),
  98         MSM_DEVICE(SCPLL),
  99         MSM_DEVICE(AD5),
 100         MSM_DEVICE(MDC),
 101         {
 102                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 103                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 104                 .length =   MSM_SHARED_RAM_SIZE,
 105                 .type =     MT_DEVICE,
 106         },
 107 };
 108
 109 void __init msm_map_qsd8x50_io(void)
 110 {
 111         debug_ll_io_init();
 112         iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
 113 }
 114 #endif /* CONFIG_ARCH_QSD8X50 */
 115
 116 #ifdef CONFIG_ARCH_MSM7X30
 117 static struct map_desc msm7x30_io_desc[] __initdata = {
 118         MSM_DEVICE(VIC),
 119         MSM_CHIP_DEVICE(CSR, MSM7X30),
 120         MSM_DEVICE(DMOV),
 121         MSM_CHIP_DEVICE(GPIO1, MSM7X30),
 122         MSM_CHIP_DEVICE(GPIO2, MSM7X30),
 123         MSM_DEVICE(CLK_CTL),
 124         MSM_DEVICE(CLK_CTL_SH2),
 125         MSM_DEVICE(AD5),
 126         MSM_DEVICE(MDC),
 127         MSM_DEVICE(ACC),
 128         MSM_DEVICE(SAW),
 129         MSM_DEVICE(GCC),
 130         MSM_DEVICE(TCSR),
 131         {
 132                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 133                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 134                 .length =   MSM_SHARED_RAM_SIZE,
 135                 .type =     MT_DEVICE,
 136         },
 137 };
 138
 139 void __init msm_map_msm7x30_io(void)
 140 {
 141         debug_ll_io_init();
 142         iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
 143 }
 144 #endif /* CONFIG_ARCH_MSM7X30 */
 145
 146 #ifdef CONFIG_ARCH_MSM7X00A
 147 void __iomem *__msm_ioremap_caller(phys_addr_t phys_addr, size_t size,
 148                                    unsigned int mtype, void *caller)
 149 {
 150         if (mtype == MT_DEVICE) {
 151                 /* The peripherals in the 88000000 - D0000000 range
 152                  * are only accessible by type MT_DEVICE_NONSHARED.
 153                  * Adjust mtype as necessary to make this "just work."
 154                  */
 155                 if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
 156                         mtype = MT_DEVICE_NONSHARED;
 157         }
 158
 159         return __arm_ioremap_caller(phys_addr, size, mtype, caller);
 160 }
 161 #endif