aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-x86/tce.h
blob: e7932d7fbbab9d10ccff23b170f54d20a9e15a32 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
/*
 * 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__TCE_H
#define ASM_X86__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__TCE_H */