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kernel/linux-rt-4.4.41/arch/ia64/include/asm/agp.h 818 Bytes
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  #ifndef _ASM_IA64_AGP_H
  #define _ASM_IA64_AGP_H
  
  /*
   * IA-64 specific AGP definitions.
   *
   * Copyright (C) 2002-2003 Hewlett-Packard Co
   *	David Mosberger-Tang <davidm@hpl.hp.com>
   */
  
  /*
   * To avoid memory-attribute aliasing issues, we require that the AGPGART engine operate
   * in coherent mode, which lets us map the AGP memory as normal (write-back) memory
   * (unlike x86, where it gets mapped "write-coalescing").
   */
  #define map_page_into_agp(page)		/* nothing */
  #define unmap_page_from_agp(page)	/* nothing */
  #define flush_agp_cache()		mb()
  
  /* GATT allocation. Returns/accepts GATT kernel virtual address. */
  #define alloc_gatt_pages(order)		\
  	((char *)__get_free_pages(GFP_KERNEL, (order)))
  #define free_gatt_pages(table, order)	\
  	free_pages((unsigned long)(table), (order))
  
  #endif /* _ASM_IA64_AGP_H */