1 | /* |
2 | * Derived from include/asm-powerpc/iommu.h |
3 | * |
4 | * Copyright IBM Corporation, 2006-2007 |
5 | * |
6 | * Author: Jon Mason <jdmason@us.ibm.com> |
7 | * Author: Muli Ben-Yehuda <muli@il.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_CALGARY_H |
25 | #define _ASM_X86_CALGARY_H |
26 | |
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> |
32 | |
33 | struct iommu_table { |
34 | const 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 */ |
44 | }; |
45 | |
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); |
50 | }; |
51 | |
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 |
61 | |
62 | extern int use_calgary; |
63 | |
64 | #ifdef CONFIG_CALGARY_IOMMU |
65 | extern int detect_calgary(void); |
66 | #else |
67 | static inline int detect_calgary(void) { return -ENODEV; } |
68 | #endif |
69 | |
70 | #endif /* _ASM_X86_CALGARY_H */ |
71 | |