linux/arch/arm/plat-omap/io.c
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   1/*
   2 * Common io.c file
   3 * This file is created by Russell King <rmk+kernel@arm.linux.org.uk>
   4 *
   5 * Copyright (C) 2009 Texas Instruments
   6 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12#include <linux/module.h>
  13#include <linux/io.h>
  14#include <linux/mm.h>
  15
  16#include <plat/omap7xx.h>
  17#include <plat/omap1510.h>
  18#include <plat/omap16xx.h>
  19#include <plat/omap24xx.h>
  20#include <plat/omap34xx.h>
  21#include <plat/omap44xx.h>
  22
  23#define BETWEEN(p,st,sz)        ((p) >= (st) && (p) < ((st) + (sz)))
  24#define XLATE(p,pst,vst)        ((void __iomem *)((p) - (pst) + (vst)))
  25
  26/*
  27 * Intercept ioremap() requests for addresses in our fixed mapping regions.
  28 */
  29void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
  30{
  31#ifdef CONFIG_ARCH_OMAP1
  32        if (cpu_class_is_omap1()) {
  33                if (BETWEEN(p, OMAP1_IO_PHYS, OMAP1_IO_SIZE))
  34                        return XLATE(p, OMAP1_IO_PHYS, OMAP1_IO_VIRT);
  35        }
  36        if (cpu_is_omap7xx()) {
  37                if (BETWEEN(p, OMAP7XX_DSP_BASE, OMAP7XX_DSP_SIZE))
  38                        return XLATE(p, OMAP7XX_DSP_BASE, OMAP7XX_DSP_START);
  39
  40                if (BETWEEN(p, OMAP7XX_DSPREG_BASE, OMAP7XX_DSPREG_SIZE))
  41                        return XLATE(p, OMAP7XX_DSPREG_BASE,
  42                                        OMAP7XX_DSPREG_START);
  43        }
  44        if (cpu_is_omap15xx()) {
  45                if (BETWEEN(p, OMAP1510_DSP_BASE, OMAP1510_DSP_SIZE))
  46                        return XLATE(p, OMAP1510_DSP_BASE, OMAP1510_DSP_START);
  47
  48                if (BETWEEN(p, OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_SIZE))
  49                        return XLATE(p, OMAP1510_DSPREG_BASE,
  50                                        OMAP1510_DSPREG_START);
  51        }
  52        if (cpu_is_omap16xx()) {
  53                if (BETWEEN(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_SIZE))
  54                        return XLATE(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_START);
  55
  56                if (BETWEEN(p, OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_SIZE))
  57                        return XLATE(p, OMAP16XX_DSPREG_BASE,
  58                                        OMAP16XX_DSPREG_START);
  59        }
  60#endif
  61#ifdef CONFIG_ARCH_OMAP2
  62        if (cpu_is_omap24xx()) {
  63                if (BETWEEN(p, L3_24XX_PHYS, L3_24XX_SIZE))
  64                        return XLATE(p, L3_24XX_PHYS, L3_24XX_VIRT);
  65                if (BETWEEN(p, L4_24XX_PHYS, L4_24XX_SIZE))
  66                        return XLATE(p, L4_24XX_PHYS, L4_24XX_VIRT);
  67        }
  68        if (cpu_is_omap2420()) {
  69                if (BETWEEN(p, DSP_MEM_2420_PHYS, DSP_MEM_2420_SIZE))
  70                        return XLATE(p, DSP_MEM_2420_PHYS, DSP_MEM_2420_VIRT);
  71                if (BETWEEN(p, DSP_IPI_2420_PHYS, DSP_IPI_2420_SIZE))
  72                        return XLATE(p, DSP_IPI_2420_PHYS, DSP_IPI_2420_SIZE);
  73                if (BETWEEN(p, DSP_MMU_2420_PHYS, DSP_MMU_2420_SIZE))
  74                        return XLATE(p, DSP_MMU_2420_PHYS, DSP_MMU_2420_VIRT);
  75        }
  76        if (cpu_is_omap2430()) {
  77                if (BETWEEN(p, L4_WK_243X_PHYS, L4_WK_243X_SIZE))
  78                        return XLATE(p, L4_WK_243X_PHYS, L4_WK_243X_VIRT);
  79                if (BETWEEN(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_SIZE))
  80                        return XLATE(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_VIRT);
  81                if (BETWEEN(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_SIZE))
  82                        return XLATE(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_VIRT);
  83                if (BETWEEN(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_SIZE))
  84                        return XLATE(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_VIRT);
  85        }
  86#endif
  87#ifdef CONFIG_ARCH_OMAP3
  88        if (cpu_is_ti816x()) {
  89                if (BETWEEN(p, L4_34XX_PHYS, L4_34XX_SIZE))
  90                        return XLATE(p, L4_34XX_PHYS, L4_34XX_VIRT);
  91        } else if (cpu_is_omap34xx()) {
  92                if (BETWEEN(p, L3_34XX_PHYS, L3_34XX_SIZE))
  93                        return XLATE(p, L3_34XX_PHYS, L3_34XX_VIRT);
  94                if (BETWEEN(p, L4_34XX_PHYS, L4_34XX_SIZE))
  95                        return XLATE(p, L4_34XX_PHYS, L4_34XX_VIRT);
  96                if (BETWEEN(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_SIZE))
  97                        return XLATE(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_VIRT);
  98                if (BETWEEN(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_SIZE))
  99                        return XLATE(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_VIRT);
 100                if (BETWEEN(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_SIZE))
 101                        return XLATE(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_VIRT);
 102                if (BETWEEN(p, L4_PER_34XX_PHYS, L4_PER_34XX_SIZE))
 103                        return XLATE(p, L4_PER_34XX_PHYS, L4_PER_34XX_VIRT);
 104                if (BETWEEN(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_SIZE))
 105                        return XLATE(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_VIRT);
 106        }
 107#endif
 108#ifdef CONFIG_ARCH_OMAP4
 109        if (cpu_is_omap44xx()) {
 110                if (BETWEEN(p, L3_44XX_PHYS, L3_44XX_SIZE))
 111                        return XLATE(p, L3_44XX_PHYS, L3_44XX_VIRT);
 112                if (BETWEEN(p, L4_44XX_PHYS, L4_44XX_SIZE))
 113                        return XLATE(p, L4_44XX_PHYS, L4_44XX_VIRT);
 114                if (BETWEEN(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_SIZE))
 115                        return XLATE(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_VIRT);
 116                if (BETWEEN(p, OMAP44XX_EMIF1_PHYS, OMAP44XX_EMIF1_SIZE))
 117                        return XLATE(p, OMAP44XX_EMIF1_PHYS,            \
 118                                                        OMAP44XX_EMIF1_VIRT);
 119                if (BETWEEN(p, OMAP44XX_EMIF2_PHYS, OMAP44XX_EMIF2_SIZE))
 120                        return XLATE(p, OMAP44XX_EMIF2_PHYS,            \
 121                                                        OMAP44XX_EMIF2_VIRT);
 122                if (BETWEEN(p, OMAP44XX_DMM_PHYS, OMAP44XX_DMM_SIZE))
 123                        return XLATE(p, OMAP44XX_DMM_PHYS, OMAP44XX_DMM_VIRT);
 124                if (BETWEEN(p, L4_PER_44XX_PHYS, L4_PER_44XX_SIZE))
 125                        return XLATE(p, L4_PER_44XX_PHYS, L4_PER_44XX_VIRT);
 126                if (BETWEEN(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_SIZE))
 127                        return XLATE(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_VIRT);
 128        }
 129#endif
 130        return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
 131}
 132EXPORT_SYMBOL(omap_ioremap);
 133
 134void omap_iounmap(volatile void __iomem *addr)
 135{
 136        unsigned long virt = (unsigned long)addr;
 137
 138        if (virt >= VMALLOC_START && virt < VMALLOC_END)
 139                __iounmap(addr);
 140}
 141EXPORT_SYMBOL(omap_iounmap);
 142