include/asm-generic/types.h

   1 #ifndef _ASM_GENERIC_TYPES_H
   2 #define _ASM_GENERIC_TYPES_H
   3 /*
   4  * int-ll64 is used practically everywhere now,
   5  * so use it as a reasonable default.
   6  */
   7 #include <asm-generic/int-ll64.h>
   8
   9 #ifndef __ASSEMBLY__
  10
  11 typedef unsigned short umode_t;
  12
  13 #endif /* __ASSEMBLY__ */
  14
  15 /*
  16  * These aren't exported outside the kernel to avoid name space clashes
  17  */
  18 #ifdef __KERNEL__
  19 #ifndef __ASSEMBLY__
  20 /*
  21  * DMA addresses may be very different from physical addresses
  22  * and pointers. i386 and powerpc may have 64 bit DMA on 32 bit
  23  * systems, while sparc64 uses 32 bit DMA addresses for 64 bit
  24  * physical addresses.
  25  * This default defines dma_addr_t to have the same size as
  26  * phys_addr_t, which is the most common way.
  27  * Do not define the dma64_addr_t type, which never really
  28  * worked.
  29  */
  30 #ifndef dma_addr_t
  31 #ifdef CONFIG_PHYS_ADDR_T_64BIT
  32 typedef u64 dma_addr_t;
  33 #else
  34 typedef u32 dma_addr_t;
  35 #endif /* CONFIG_PHYS_ADDR_T_64BIT */
  36 #endif /* dma_addr_t */
  37
  38 #endif /* __ASSEMBLY__ */
  39
  40 #endif /* __KERNEL__ */
  41
  42 #endif /* _ASM_GENERIC_TYPES_H */