fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / calgary.h
blob67f60406e2d8136ac50b3b25afefef629508ec0d
1 /*
2 * Derived from include/asm-powerpc/iommu.h
4 * Copyright IBM Corporation, 2006-2007
6 * Author: Jon Mason <jdmason@us.ibm.com>
7 * Author: Muli Ben-Yehuda <muli@il.ibm.com>
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.
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.
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
24 #ifndef _ASM_X86_64_CALGARY_H
25 #define _ASM_X86_64_CALGARY_H
27 #include <linux/spinlock.h>
28 #include <linux/device.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/timer.h>
31 #include <asm/types.h>
33 struct iommu_table {
34 struct cal_chipset_ops *chip_ops; /* chipset specific funcs */
35 unsigned long it_base; /* mapped address of tce table */
36 unsigned long it_hint; /* Hint for next alloc */
37 unsigned long *it_map; /* A simple allocation bitmap for now */
38 void __iomem *bbar; /* Bridge BAR */
39 u64 tar_val; /* Table Address Register */
40 struct timer_list watchdog_timer;
41 spinlock_t it_lock; /* Protects it_map */
42 unsigned int it_size; /* Size of iommu table in entries */
43 unsigned char it_busno; /* Bus number this table belongs to */
46 struct cal_chipset_ops {
47 void (*handle_quirks)(struct iommu_table *tbl, struct pci_dev *dev);
48 void (*tce_cache_blast)(struct iommu_table *tbl);
49 void (*dump_error_regs)(struct iommu_table *tbl);
52 #define TCE_TABLE_SIZE_UNSPECIFIED ~0
53 #define TCE_TABLE_SIZE_64K 0
54 #define TCE_TABLE_SIZE_128K 1
55 #define TCE_TABLE_SIZE_256K 2
56 #define TCE_TABLE_SIZE_512K 3
57 #define TCE_TABLE_SIZE_1M 4
58 #define TCE_TABLE_SIZE_2M 5
59 #define TCE_TABLE_SIZE_4M 6
60 #define TCE_TABLE_SIZE_8M 7
62 extern int use_calgary;
64 #ifdef CONFIG_CALGARY_IOMMU
65 extern int calgary_iommu_init(void);
66 extern void detect_calgary(void);
67 #else
68 static inline int calgary_iommu_init(void) { return 1; }
69 static inline void detect_calgary(void) { return; }
70 #endif
72 #endif /* _ASM_X86_64_CALGARY_H */