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/init.h>
  22 #include <linux/io.h>
  23 #include <linux/export.h>
  24
  25 #include <mach/hardware.h>
  26 #include <asm/page.h>
  27 #include <mach/msm_iomap.h>
  28 #include <asm/mach/map.h>
  29
  30 #include <mach/board.h>
  31
  32 #define MSM_CHIP_DEVICE(name, chip) {                         \
  33                 .virtual = (unsigned long) MSM_##name##_BASE, \
  34                 .pfn = __phys_to_pfn(chip##_##name##_PHYS), \
  35                 .length = chip##_##name##_SIZE, \
  36                 .type = MT_DEVICE_NONSHARED, \
  37          }
  38
  39 #define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
  40
  41 #if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27) \
  42         || defined(CONFIG_ARCH_MSM7X25)
  43 static struct map_desc msm_io_desc[] __initdata = {
  44         MSM_DEVICE(VIC),
  45         MSM_CHIP_DEVICE(CSR, MSM7X00),
  46         MSM_DEVICE(DMOV),
  47         MSM_CHIP_DEVICE(GPIO1, MSM7X00),
  48         MSM_CHIP_DEVICE(GPIO2, MSM7X00),
  49         MSM_DEVICE(CLK_CTL),
  50 #ifdef CONFIG_MSM_DEBUG_UART
  51         MSM_DEVICE(DEBUG_UART),
  52 #endif
  53 #ifdef CONFIG_ARCH_MSM7X30
  54         MSM_DEVICE(GCC),
  55 #endif
  56         {
  57                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  58                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  59                 .length =   MSM_SHARED_RAM_SIZE,
  60                 .type =     MT_DEVICE,
  61         },
  62 };
  63
  64 void __init msm_map_common_io(void)
  65 {
  66         /* Make sure the peripheral register window is closed, since
  67          * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
  68          * pages are peripheral interface or not.
  69          */
  70         asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
  71         iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
  72 }
  73 #endif
  74
  75 #ifdef CONFIG_ARCH_QSD8X50
  76 static struct map_desc qsd8x50_io_desc[] __initdata = {
  77         MSM_DEVICE(VIC),
  78         MSM_CHIP_DEVICE(CSR, QSD8X50),
  79         MSM_DEVICE(DMOV),
  80         MSM_CHIP_DEVICE(GPIO1, QSD8X50),
  81         MSM_CHIP_DEVICE(GPIO2, QSD8X50),
  82         MSM_DEVICE(CLK_CTL),
  83         MSM_DEVICE(SIRC),
  84         MSM_DEVICE(SCPLL),
  85         MSM_DEVICE(AD5),
  86         MSM_DEVICE(MDC),
  87 #ifdef CONFIG_MSM_DEBUG_UART
  88         MSM_DEVICE(DEBUG_UART),
  89 #endif
  90         {
  91                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  92                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  93                 .length =   MSM_SHARED_RAM_SIZE,
  94                 .type =     MT_DEVICE,
  95         },
  96 };
  97
  98 void __init msm_map_qsd8x50_io(void)
  99 {
 100         iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
 101 }
 102 #endif /* CONFIG_ARCH_QSD8X50 */
 103
 104 #ifdef CONFIG_ARCH_MSM8X60
 105 static struct map_desc msm8x60_io_desc[] __initdata = {
 106         MSM_CHIP_DEVICE(QGIC_DIST, MSM8X60),
 107         MSM_CHIP_DEVICE(QGIC_CPU, MSM8X60),
 108         MSM_CHIP_DEVICE(TMR, MSM8X60),
 109         MSM_CHIP_DEVICE(TMR0, MSM8X60),
 110         MSM_DEVICE(ACC),
 111         MSM_DEVICE(GCC),
 112 };
 113
 114 void __init msm_map_msm8x60_io(void)
 115 {
 116         iotable_init(msm8x60_io_desc, ARRAY_SIZE(msm8x60_io_desc));
 117 }
 118 #endif /* CONFIG_ARCH_MSM8X60 */
 119
 120 #ifdef CONFIG_ARCH_MSM8960
 121 static struct map_desc msm8960_io_desc[] __initdata = {
 122         MSM_CHIP_DEVICE(QGIC_DIST, MSM8960),
 123         MSM_CHIP_DEVICE(QGIC_CPU, MSM8960),
 124         MSM_CHIP_DEVICE(TMR, MSM8960),
 125         MSM_CHIP_DEVICE(TMR0, MSM8960),
 126 };
 127
 128 void __init msm_map_msm8960_io(void)
 129 {
 130         iotable_init(msm8960_io_desc, ARRAY_SIZE(msm8960_io_desc));
 131 }
 132 #endif /* CONFIG_ARCH_MSM8960 */
 133
 134 #ifdef CONFIG_ARCH_MSM7X30
 135 static struct map_desc msm7x30_io_desc[] __initdata = {
 136         MSM_DEVICE(VIC),
 137         MSM_CHIP_DEVICE(CSR, MSM7X30),
 138         MSM_DEVICE(DMOV),
 139         MSM_CHIP_DEVICE(GPIO1, MSM7X30),
 140         MSM_CHIP_DEVICE(GPIO2, MSM7X30),
 141         MSM_DEVICE(CLK_CTL),
 142         MSM_DEVICE(CLK_CTL_SH2),
 143         MSM_DEVICE(AD5),
 144         MSM_DEVICE(MDC),
 145         MSM_DEVICE(ACC),
 146         MSM_DEVICE(SAW),
 147         MSM_DEVICE(GCC),
 148         MSM_DEVICE(TCSR),
 149 #ifdef CONFIG_MSM_DEBUG_UART
 150         MSM_DEVICE(DEBUG_UART),
 151 #endif
 152         {
 153                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 154                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 155                 .length =   MSM_SHARED_RAM_SIZE,
 156                 .type =     MT_DEVICE,
 157         },
 158 };
 159
 160 void __init msm_map_msm7x30_io(void)
 161 {
 162         iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
 163 }
 164 #endif /* CONFIG_ARCH_MSM7X30 */
 165
 166 void __iomem *
 167 __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 168 {
 169         if (mtype == MT_DEVICE) {
 170                 /* The peripherals in the 88000000 - D0000000 range
 171                  * are only accessible by type MT_DEVICE_NONSHARED.
 172                  * Adjust mtype as necessary to make this "just work."
 173                  */
 174                 if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
 175                         mtype = MT_DEVICE_NONSHARED;
 176         }
 177
 178         return __arm_ioremap_caller(phys_addr, size, mtype,
 179                 __builtin_return_address(0));
 180 }
 181 EXPORT_SYMBOL(__msm_ioremap);