arch/powerpc/include/asm/tce.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
   4  * Rewrite, cleanup:
   5  * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
   6  */
   7
   8 #ifndef _ASM_POWERPC_TCE_H
   9 #define _ASM_POWERPC_TCE_H
  10 #ifdef __KERNEL__
  11
  12 #include <asm/iommu.h>
  13
  14 /*
  15  * Tces come in two formats, one for the virtual bus and a different
  16  * format for PCI.  PCI TCEs can have hardware or software maintianed
  17  * coherency.
  18  */
  19 #define TCE_VB                  0
  20 #define TCE_PCI                 1
  21
  22 #define TCE_ENTRY_SIZE          8               /* each TCE is 64 bits */
  23 #define TCE_VALID               0x800           /* TCE valid */
  24 #define TCE_ALLIO               0x400           /* TCE valid for all lpars */
  25 #define TCE_PCI_WRITE           0x2             /* write from PCI allowed */
  26 #define TCE_PCI_READ            0x1             /* read from PCI allowed */
  27 #define TCE_VB_WRITE            0x1             /* write from VB allowed */
  28
  29 #endif /* __KERNEL__ */
  30 #endif /* _ASM_POWERPC_TCE_H */