include/asm-ia64/agp.h

   1 #ifndef _ASM_IA64_AGP_H
   2 #define _ASM_IA64_AGP_H
   3
   4 /*
   5  * IA-64 specific AGP definitions.
   6  *
   7  * Copyright (C) 2002-2003 Hewlett-Packard Co
   8  *      David Mosberger-Tang <davidm@hpl.hp.com>
   9  */
  10
  11 /*
  12  * To avoid memory-attribute aliasing issues, we require that the AGPGART engine operate
  13  * in coherent mode, which lets us map the AGP memory as normal (write-back) memory
  14  * (unlike x86, where it gets mapped "write-coalescing").
  15  */
  16 #define map_page_into_agp(page)         /* nothing */
  17 #define unmap_page_from_agp(page)       /* nothing */
  18 #define flush_agp_mappings()            /* nothing */
  19 #define flush_agp_cache()               mb()
  20
  21 /* Convert a physical address to an address suitable for the GART. */
  22 #define phys_to_gart(x) (x)
  23 #define gart_to_phys(x) (x)
  24
  25 /* GATT allocation. Returns/accepts GATT kernel virtual address. */
  26 #define alloc_gatt_pages(order)         \
  27         ((char *)__get_free_pages(GFP_KERNEL, (order)))
  28 #define free_gatt_pages(table, order)   \
  29         free_pages((unsigned long)(table), (order))
  30
  31 #endif /* _ASM_IA64_AGP_H */