usr/src/uts/sun4/sys/iommutsb.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2000 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #ifndef _SYS_IOMMUTSB_H
  28 #define _SYS_IOMMUTSB_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <sys/types.h>
  33
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 #ifdef _KERNEL
  39
  40 /*
  41  * IOMMU TSB allocation.
  42  */
  43
  44 /* These four function comprise the interface for the nexus drivers. */
  45 #define IOMMU_TSB_COOKIE_NONE   ((uint16_t)-1)
  46 extern uint16_t iommu_tsb_alloc(uint16_t);
  47 extern void iommu_tsb_free(uint16_t);
  48 extern uint64_t *iommu_tsb_cookie_to_va(uint16_t);
  49 extern uint_t iommu_tsb_cookie_to_size(uint16_t);
  50
  51 /* iommu_tsb_init() is called during startup. */
  52 extern caddr_t iommu_tsb_init(caddr_t);
  53
  54 #endif /* _KERNEL */
  55
  56 #ifdef __cplusplus
  57 }
  58 #endif
  59
  60 #endif  /* _SYS_IOMMUTSB_H */