arch/arm/plat-omap/io.c

   1 #include <linux/module.h>
   2 #include <linux/io.h>
   3 #include <linux/mm.h>
   4
   5 #include <mach/omap730.h>
   6 #include <mach/omap1510.h>
   7 #include <mach/omap16xx.h>
   8 #include <mach/omap24xx.h>
   9 #include <mach/omap34xx.h>
  10
  11 #define BETWEEN(p,st,sz)        ((p) >= (st) && (p) < ((st) + (sz)))
  12 #define XLATE(p,pst,vst)        ((void __iomem *)((p) - (pst) + (vst)))
  13
  14 /*
  15  * Intercept ioremap() requests for addresses in our fixed mapping regions.
  16  */
  17 void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
  18 {
  19 #ifdef CONFIG_ARCH_OMAP1
  20         if (cpu_class_is_omap1()) {
  21                 if (BETWEEN(p, IO_PHYS, IO_SIZE))
  22                         return XLATE(p, IO_PHYS, IO_VIRT);
  23         }
  24         if (cpu_is_omap730()) {
  25                 if (BETWEEN(p, OMAP730_DSP_BASE, OMAP730_DSP_SIZE))
  26                         return XLATE(p, OMAP730_DSP_BASE, OMAP730_DSP_START);
  27
  28                 if (BETWEEN(p, OMAP730_DSPREG_BASE, OMAP730_DSPREG_SIZE))
  29                         return XLATE(p, OMAP730_DSPREG_BASE,
  30                                         OMAP730_DSPREG_START);
  31         }
  32         if (cpu_is_omap15xx()) {
  33                 if (BETWEEN(p, OMAP1510_DSP_BASE, OMAP1510_DSP_SIZE))
  34                         return XLATE(p, OMAP1510_DSP_BASE, OMAP1510_DSP_START);
  35
  36                 if (BETWEEN(p, OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_SIZE))
  37                         return XLATE(p, OMAP1510_DSPREG_BASE,
  38                                         OMAP1510_DSPREG_START);
  39         }
  40         if (cpu_is_omap16xx()) {
  41                 if (BETWEEN(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_SIZE))
  42                         return XLATE(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_START);
  43
  44                 if (BETWEEN(p, OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_SIZE))
  45                         return XLATE(p, OMAP16XX_DSPREG_BASE,
  46                                         OMAP16XX_DSPREG_START);
  47         }
  48 #endif
  49 #ifdef CONFIG_ARCH_OMAP2
  50         if (cpu_class_is_omap2()) {
  51                 if (BETWEEN(p, L3_24XX_PHYS, L3_24XX_SIZE))
  52                         return XLATE(p, L3_24XX_PHYS, L3_24XX_VIRT);
  53                 if (BETWEEN(p, L4_24XX_PHYS, L4_24XX_SIZE))
  54                         return XLATE(p, L4_24XX_PHYS, L4_24XX_VIRT);
  55                 if (BETWEEN(p, DSP_MEM_24XX_PHYS, DSP_MEM_24XX_SIZE))
  56                         return XLATE(p, DSP_MEM_24XX_PHYS, DSP_MEM_24XX_VIRT);
  57                 if (BETWEEN(p, DSP_IPI_24XX_PHYS, DSP_IPI_24XX_SIZE))
  58                         return XLATE(p, DSP_IPI_24XX_PHYS, DSP_IPI_24XX_SIZE);
  59                 if (BETWEEN(p, DSP_MMU_24XX_PHYS, DSP_MMU_24XX_SIZE))
  60                         return XLATE(p, DSP_MMU_24XX_PHYS, DSP_MMU_24XX_VIRT);
  61         }
  62 #ifdef CONFIG_ARCH_OMAP2430
  63         if (cpu_is_omap2430()) {
  64                 if (BETWEEN(p, L4_WK_243X_PHYS, L4_WK_243X_SIZE))
  65                         return XLATE(L4_WK_243X_PHYS, L4_WK_243X_VIRT);
  66                 if (BETWEEN(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_SIZE))
  67                         return XLATE(OMAP243X_GPMC_PHYS, OMAP243X_GPMC_VIRT);
  68         }
  69 #endif
  70 #endif
  71
  72         return __arm_ioremap(p, size, type);
  73 }
  74 EXPORT_SYMBOL(omap_ioremap);
  75
  76 void omap_iounmap(volatile void __iomem *addr)
  77 {
  78         unsigned long virt = (unsigned long)addr;
  79
  80         if (virt >= VMALLOC_START && virt < VMALLOC_END)
  81                 __iounmap(addr);
  82 }
  83 EXPORT_SYMBOL(omap_iounmap);