arch/arm/plat-omap/io.c

   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 #include <linux/dma-mapping.h>
  16
  17 #include <plat/omap7xx.h>
  18 #include <plat/omap1510.h>
  19 #include <plat/omap16xx.h>
  20 #include <plat/omap24xx.h>
  21 #include <plat/omap34xx.h>
  22 #include <plat/omap44xx.h>
  23
  24 #define BETWEEN(p,st,sz)        ((p) >= (st) && (p) < ((st) + (sz)))
  25 #define XLATE(p,pst,vst)        ((void __iomem *)((p) - (pst) + (vst)))
  26
  27 /*
  28  * Intercept ioremap() requests for addresses in our fixed mapping regions.
  29  */
  30 void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
  31 {
  32 #ifdef CONFIG_ARCH_OMAP1
  33         if (cpu_class_is_omap1()) {
  34                 if (BETWEEN(p, OMAP1_IO_PHYS, OMAP1_IO_SIZE))
  35                         return XLATE(p, OMAP1_IO_PHYS, OMAP1_IO_VIRT);
  36         }
  37         if (cpu_is_omap7xx()) {
  38                 if (BETWEEN(p, OMAP7XX_DSP_BASE, OMAP7XX_DSP_SIZE))
  39                         return XLATE(p, OMAP7XX_DSP_BASE, OMAP7XX_DSP_START);
  40
  41                 if (BETWEEN(p, OMAP7XX_DSPREG_BASE, OMAP7XX_DSPREG_SIZE))
  42                         return XLATE(p, OMAP7XX_DSPREG_BASE,
  43                                         OMAP7XX_DSPREG_START);
  44         }
  45         if (cpu_is_omap15xx()) {
  46                 if (BETWEEN(p, OMAP1510_DSP_BASE, OMAP1510_DSP_SIZE))
  47                         return XLATE(p, OMAP1510_DSP_BASE, OMAP1510_DSP_START);
  48
  49                 if (BETWEEN(p, OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_SIZE))
  50                         return XLATE(p, OMAP1510_DSPREG_BASE,
  51                                         OMAP1510_DSPREG_START);
  52         }
  53         if (cpu_is_omap16xx()) {
  54                 if (BETWEEN(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_SIZE))
  55                         return XLATE(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_START);
  56
  57                 if (BETWEEN(p, OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_SIZE))
  58                         return XLATE(p, OMAP16XX_DSPREG_BASE,
  59                                         OMAP16XX_DSPREG_START);
  60         }
  61 #endif
  62 #ifdef CONFIG_ARCH_OMAP2
  63         if (cpu_is_omap24xx()) {
  64                 if (BETWEEN(p, L3_24XX_PHYS, L3_24XX_SIZE))
  65                         return XLATE(p, L3_24XX_PHYS, L3_24XX_VIRT);
  66                 if (BETWEEN(p, L4_24XX_PHYS, L4_24XX_SIZE))
  67                         return XLATE(p, L4_24XX_PHYS, L4_24XX_VIRT);
  68         }
  69         if (cpu_is_omap2420()) {
  70                 if (BETWEEN(p, DSP_MEM_2420_PHYS, DSP_MEM_2420_SIZE))
  71                         return XLATE(p, DSP_MEM_2420_PHYS, DSP_MEM_2420_VIRT);
  72                 if (BETWEEN(p, DSP_IPI_2420_PHYS, DSP_IPI_2420_SIZE))
  73                         return XLATE(p, DSP_IPI_2420_PHYS, DSP_IPI_2420_SIZE);
  74                 if (BETWEEN(p, DSP_MMU_2420_PHYS, DSP_MMU_2420_SIZE))
  75                         return XLATE(p, DSP_MMU_2420_PHYS, DSP_MMU_2420_VIRT);
  76         }
  77         if (cpu_is_omap2430()) {
  78                 if (BETWEEN(p, L4_WK_243X_PHYS, L4_WK_243X_SIZE))
  79                         return XLATE(p, L4_WK_243X_PHYS, L4_WK_243X_VIRT);
  80                 if (BETWEEN(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_SIZE))
  81                         return XLATE(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_VIRT);
  82                 if (BETWEEN(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_SIZE))
  83                         return XLATE(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_VIRT);
  84                 if (BETWEEN(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_SIZE))
  85                         return XLATE(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_VIRT);
  86         }
  87 #endif
  88 #ifdef CONFIG_ARCH_OMAP3
  89         if (cpu_is_ti816x()) {
  90                 if (BETWEEN(p, L4_34XX_PHYS, L4_34XX_SIZE))
  91                         return XLATE(p, L4_34XX_PHYS, L4_34XX_VIRT);
  92         } else if (cpu_is_omap34xx()) {
  93                 if (BETWEEN(p, L3_34XX_PHYS, L3_34XX_SIZE))
  94                         return XLATE(p, L3_34XX_PHYS, L3_34XX_VIRT);
  95                 if (BETWEEN(p, L4_34XX_PHYS, L4_34XX_SIZE))
  96                         return XLATE(p, L4_34XX_PHYS, L4_34XX_VIRT);
  97                 if (BETWEEN(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_SIZE))
  98                         return XLATE(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_VIRT);
  99                 if (BETWEEN(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_SIZE))
 100                         return XLATE(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_VIRT);
 101                 if (BETWEEN(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_SIZE))
 102                         return XLATE(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_VIRT);
 103                 if (BETWEEN(p, L4_PER_34XX_PHYS, L4_PER_34XX_SIZE))
 104                         return XLATE(p, L4_PER_34XX_PHYS, L4_PER_34XX_VIRT);
 105                 if (BETWEEN(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_SIZE))
 106                         return XLATE(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_VIRT);
 107         }
 108 #endif
 109 #ifdef CONFIG_ARCH_OMAP4
 110         if (cpu_is_omap44xx()) {
 111                 if (BETWEEN(p, L3_44XX_PHYS, L3_44XX_SIZE))
 112                         return XLATE(p, L3_44XX_PHYS, L3_44XX_VIRT);
 113                 if (BETWEEN(p, L4_44XX_PHYS, L4_44XX_SIZE))
 114                         return XLATE(p, L4_44XX_PHYS, L4_44XX_VIRT);
 115                 if (BETWEEN(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_SIZE))
 116                         return XLATE(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_VIRT);
 117                 if (BETWEEN(p, OMAP44XX_EMIF1_PHYS, OMAP44XX_EMIF1_SIZE))
 118                         return XLATE(p, OMAP44XX_EMIF1_PHYS,            \
 119                                                         OMAP44XX_EMIF1_VIRT);
 120                 if (BETWEEN(p, OMAP44XX_EMIF2_PHYS, OMAP44XX_EMIF2_SIZE))
 121                         return XLATE(p, OMAP44XX_EMIF2_PHYS,            \
 122                                                         OMAP44XX_EMIF2_VIRT);
 123                 if (BETWEEN(p, OMAP44XX_DMM_PHYS, OMAP44XX_DMM_SIZE))
 124                         return XLATE(p, OMAP44XX_DMM_PHYS, OMAP44XX_DMM_VIRT);
 125                 if (BETWEEN(p, L4_PER_44XX_PHYS, L4_PER_44XX_SIZE))
 126                         return XLATE(p, L4_PER_44XX_PHYS, L4_PER_44XX_VIRT);
 127                 if (BETWEEN(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_SIZE))
 128                         return XLATE(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_VIRT);
 129         }
 130 #endif
 131         return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
 132 }
 133 EXPORT_SYMBOL(omap_ioremap);
 134
 135 void omap_iounmap(volatile void __iomem *addr)
 136 {
 137         unsigned long virt = (unsigned long)addr;
 138
 139         if (virt >= VMALLOC_START && virt < VMALLOC_END)
 140                 __iounmap(addr);
 141 }
 142 EXPORT_SYMBOL(omap_iounmap);
 143
 144 void __init omap_init_consistent_dma_size(void)
 145 {
 146 #ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
 147         init_consistent_dma_size(CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE << 20);
 148 #endif
 149 }