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tce.h
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1 /*
2  * This file is derived from asm-powerpc/tce.h.
3  *
4  * Copyright (C) IBM Corporation, 2006
5  *
6  * Author: Muli Ben-Yehuda <[email protected]>
7  * Author: Jon Mason <[email protected]>
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 
27 extern unsigned int specified_table_size;
28 struct 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 
41 extern void tce_build(struct iommu_table *tbl, unsigned long index,
42  unsigned int npages, unsigned long uaddr, int direction);
43 extern void tce_free(struct iommu_table *tbl, long index, unsigned int npages);
44 extern void * __init alloc_tce_table(void);
45 extern void __init free_tce_table(void *tbl);
46 extern int __init build_tce_table(struct pci_dev *dev, void __iomem *bbar);
47 
48 #endif /* _ASM_X86_TCE_H */