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_TYPE(name, chip, mem_type) {                          \
  33                 .virtual = (unsigned long) MSM_##name##_BASE, \
  34                 .pfn = __phys_to_pfn(chip##_##name##_PHYS), \
  35                 .length = chip##_##name##_SIZE, \
  36                 .type = mem_type, \
  37          }
  38
  39 #define MSM_DEVICE_TYPE(name, mem_type) \
  40                 MSM_CHIP_DEVICE_TYPE(name, MSM, mem_type)
  41 #define MSM_CHIP_DEVICE(name, chip) \
  42                 MSM_CHIP_DEVICE_TYPE(name, chip, MT_DEVICE)
  43 #define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
  44
  45 #if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27) \
  46         || defined(CONFIG_ARCH_MSM7X25)
  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 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  55         defined(CONFIG_DEBUG_MSM_UART3)
  56         MSM_DEVICE_TYPE(DEBUG_UART, MT_DEVICE_NONSHARED),
  57 #endif
  58         {
  59                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  60                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  61                 .length =   MSM_SHARED_RAM_SIZE,
  62                 .type =     MT_DEVICE,
  63         },
  64 };
  65
  66 void __init msm_map_common_io(void)
  67 {
  68         /* Make sure the peripheral register window is closed, since
  69          * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
  70          * pages are peripheral interface or not.
  71          */
  72         asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
  73         iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
  74 }
  75 #endif
  76
  77 #ifdef CONFIG_ARCH_QSD8X50
  78 static struct map_desc qsd8x50_io_desc[] __initdata = {
  79         MSM_DEVICE(VIC),
  80         MSM_CHIP_DEVICE(CSR, QSD8X50),
  81         MSM_DEVICE(DMOV),
  82         MSM_CHIP_DEVICE(GPIO1, QSD8X50),
  83         MSM_CHIP_DEVICE(GPIO2, QSD8X50),
  84         MSM_DEVICE(CLK_CTL),
  85         MSM_DEVICE(SIRC),
  86         MSM_DEVICE(SCPLL),
  87         MSM_DEVICE(AD5),
  88         MSM_DEVICE(MDC),
  89 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  90         defined(CONFIG_DEBUG_MSM_UART3)
  91         MSM_DEVICE(DEBUG_UART),
  92 #endif
  93         {
  94                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  95                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  96                 .length =   MSM_SHARED_RAM_SIZE,
  97                 .type =     MT_DEVICE,
  98         },
  99 };
 100
 101 void __init msm_map_qsd8x50_io(void)
 102 {
 103         iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
 104 }
 105 #endif /* CONFIG_ARCH_QSD8X50 */
 106
 107 #ifdef CONFIG_ARCH_MSM8X60
 108 static struct map_desc msm8x60_io_desc[] __initdata = {
 109         MSM_CHIP_DEVICE(QGIC_DIST, MSM8X60),
 110         MSM_CHIP_DEVICE(QGIC_CPU, MSM8X60),
 111         MSM_CHIP_DEVICE(TMR, MSM8X60),
 112         MSM_CHIP_DEVICE(TMR0, MSM8X60),
 113         MSM_DEVICE(ACC),
 114         MSM_DEVICE(GCC),
 115 #ifdef CONFIG_DEBUG_MSM8660_UART
 116         MSM_DEVICE(DEBUG_UART),
 117 #endif
 118 };
 119
 120 void __init msm_map_msm8x60_io(void)
 121 {
 122         iotable_init(msm8x60_io_desc, ARRAY_SIZE(msm8x60_io_desc));
 123 }
 124 #endif /* CONFIG_ARCH_MSM8X60 */
 125
 126 #ifdef CONFIG_ARCH_MSM8960
 127 static struct map_desc msm8960_io_desc[] __initdata = {
 128         MSM_CHIP_DEVICE(QGIC_DIST, MSM8960),
 129         MSM_CHIP_DEVICE(QGIC_CPU, MSM8960),
 130         MSM_CHIP_DEVICE(TMR, MSM8960),
 131         MSM_CHIP_DEVICE(TMR0, MSM8960),
 132 #ifdef CONFIG_DEBUG_MSM8960_UART
 133         MSM_DEVICE(DEBUG_UART),
 134 #endif
 135 };
 136
 137 void __init msm_map_msm8960_io(void)
 138 {
 139         iotable_init(msm8960_io_desc, ARRAY_SIZE(msm8960_io_desc));
 140 }
 141 #endif /* CONFIG_ARCH_MSM8960 */
 142
 143 #ifdef CONFIG_ARCH_MSM7X30
 144 static struct map_desc msm7x30_io_desc[] __initdata = {
 145         MSM_DEVICE(VIC),
 146         MSM_CHIP_DEVICE(CSR, MSM7X30),
 147         MSM_DEVICE(DMOV),
 148         MSM_CHIP_DEVICE(GPIO1, MSM7X30),
 149         MSM_CHIP_DEVICE(GPIO2, MSM7X30),
 150         MSM_DEVICE(CLK_CTL),
 151         MSM_DEVICE(CLK_CTL_SH2),
 152         MSM_DEVICE(AD5),
 153         MSM_DEVICE(MDC),
 154         MSM_DEVICE(ACC),
 155         MSM_DEVICE(SAW),
 156         MSM_DEVICE(GCC),
 157         MSM_DEVICE(TCSR),
 158 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
 159         defined(CONFIG_DEBUG_MSM_UART3)
 160         MSM_DEVICE(DEBUG_UART),
 161 #endif
 162         {
 163                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 164                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 165                 .length =   MSM_SHARED_RAM_SIZE,
 166                 .type =     MT_DEVICE,
 167         },
 168 };
 169
 170 void __init msm_map_msm7x30_io(void)
 171 {
 172         iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
 173 }
 174 #endif /* CONFIG_ARCH_MSM7X30 */
 175
 176 void __iomem *__msm_ioremap_caller(unsigned long phys_addr, size_t size,
 177                                    unsigned int mtype, void *caller)
 178 {
 179         if (mtype == MT_DEVICE) {
 180                 /* The peripherals in the 88000000 - D0000000 range
 181                  * are only accessible by type MT_DEVICE_NONSHARED.
 182                  * Adjust mtype as necessary to make this "just work."
 183                  */
 184                 if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
 185                         mtype = MT_DEVICE_NONSHARED;
 186         }
 187
 188         return __arm_ioremap_caller(phys_addr, size, mtype, caller);
 189 }