1/*
2 * This file is derived from asm-powerpc/tce.h.
3 *
4 * Copyright (C) IBM Corporation, 2006
5 *
6 * Author: Muli Ben-Yehuda <muli@il.ibm.com>
7 * Author: Jon Mason <jdmason@us.ibm.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24#ifndef _ASM_X86_TCE_H
25#define _ASM_X86_TCE_H
26
27extern unsigned int specified_table_size;
28struct iommu_table;
29
30#define TCE_ENTRY_SIZE 8 /* in bytes */
31
32#define TCE_READ_SHIFT 0
33#define TCE_WRITE_SHIFT 1
34#define TCE_HUBID_SHIFT 2 /* unused */
35#define TCE_RSVD_SHIFT 8 /* unused */
36#define TCE_RPN_SHIFT 12
37#define TCE_UNUSED_SHIFT 48 /* unused */
38
39#define TCE_RPN_MASK 0x0000fffffffff000ULL
40
41extern void tce_build(struct iommu_table *tbl, unsigned long index,
42 unsigned int npages, unsigned long uaddr, int direction);
43extern void tce_free(struct iommu_table *tbl, long index, unsigned int npages);
44extern void * __init alloc_tce_table(void);
45extern void __init free_tce_table(void *tbl);
46extern int __init build_tce_table(struct pci_dev *dev, void __iomem *bbar);
47
48#endif /* _ASM_X86_TCE_H */
49