memory.h 903 B

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  1. /*
  2. * arch/arm/mach-ixp23xx/include/mach/memory.h
  3. *
  4. * Copyright (c) 2003-2004 Intel Corp.
  5. *
  6. * This program is free software; you can redistribute it and/or modify it
  7. * under the terms of the GNU General Public License as published by the
  8. * Free Software Foundation; either version 2 of the License, or (at your
  9. * option) any later version.
  10. */
  11. #ifndef __ASM_ARCH_MEMORY_H
  12. #define __ASM_ARCH_MEMORY_H
  13. #include <mach/hardware.h>
  14. /*
  15. * Physical DRAM offset.
  16. */
  17. #define PHYS_OFFSET (0x00000000)
  18. #define __virt_to_bus(v) \
  19. ({ unsigned int ret; \
  20. ret = ((__virt_to_phys(v) - 0x00000000) + \
  21. (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0)); \
  22. ret; })
  23. #define __bus_to_virt(b) \
  24. ({ unsigned int data; \
  25. data = *((volatile int *)IXP23XX_PCI_SDRAM_BAR); \
  26. __phys_to_virt((((b - (data & 0xfffffff0)) + 0x00000000))); })
  27. #define arch_is_coherent() 1
  28. #endif