text: /*
   * This file is derived from asm-powerpc/tce.h.
   *
   * Copyright (C) IBM Corporation, 2006
   *
   * Author: Muli Ben-Yehuda <muli@il.ibm.com>
   * Author: Jon Mason <jdmason@us.ibm.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   */
  
  #ifndef _ASM_X86_64_TCE_H
  #define _ASM_X86_64_TCE_H
  
  extern unsigned int specified_table_size;
  struct iommu_table;
  
  #define TCE_ENTRY_SIZE   8   /* in bytes */
  
  #define TCE_READ_SHIFT   0
  #define TCE_WRITE_SHIFT  1
  #define TCE_HUBID_SHIFT  2   /* unused */
  #define TCE_RSVD_SHIFT   8   /* unused */
  #define TCE_RPN_SHIFT    12
  #define TCE_UNUSED_SHIFT 48  /* unused */
  
  #define TCE_RPN_MASK     0x0000fffffffff000ULL
  
  extern void tce_build(struct iommu_table *tbl, unsigned long index,
          unsigned int npages, unsigned long uaddr, int direction);
  extern void tce_free(struct iommu_table *tbl, long index, unsigned int npages);
  extern void * __init alloc_tce_table(void);
  extern void __init free_tce_table(void *tbl);
  extern int __init build_tce_table(struct pci_dev *dev, void __iomem *bbar);
  
  #endif /* _ASM_X86_64_TCE_H */
  