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kernel/linux-rt-4.4.41/arch/parisc/include/asm/fixmap.h 1.12 KB
5113f6f70   김현기   kernel add
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  #ifndef _ASM_FIXMAP_H
  #define _ASM_FIXMAP_H
  
  /*
   * This file defines the locations of the fixed mappings on parisc.
   *
   * All of the values in this file are machine virtual addresses.
   *
   * All of the values in this file must be <4GB (because of assembly
   * loading restrictions).  If you place this region anywhere above
   * __PAGE_OFFSET, you must adjust the memory map accordingly */
  
  /* The alias region is used in kernel space to do copy/clear to or
   * from areas congruently mapped with user space.  It is 8MB large
   * and must be 16MB aligned */
  #define TMPALIAS_MAP_START	((__PAGE_OFFSET) - 16*1024*1024)
  /* This is the kernel area for all maps (vmalloc, dma etc.)  most
   * usually, it extends up to TMPALIAS_MAP_START.  Virtual addresses
   * 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */
  #define KERNEL_MAP_START	(GATEWAY_PAGE_SIZE)
  #define KERNEL_MAP_END		(TMPALIAS_MAP_START)
  
  #ifndef __ASSEMBLY__
  extern void *parisc_vmalloc_start;
  #define PCXL_DMA_MAP_SIZE	(8*1024*1024)
  #define VMALLOC_START		((unsigned long)parisc_vmalloc_start)
  #define VMALLOC_END		(KERNEL_MAP_END)
  #endif /*__ASSEMBLY__*/
  
  #endif /*_ASM_FIXMAP_H*/