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1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
e465058d JM |
2 | /* |
3 | * Derived from include/asm-powerpc/iommu.h | |
4 | * | |
ff297b8c | 5 | * Copyright IBM Corporation, 2006-2007 |
aa0a9f37 MBY |
6 | * |
7 | * Author: Jon Mason <jdmason@us.ibm.com> | |
8 | * Author: Muli Ben-Yehuda <muli@il.ibm.com> | |
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9 | */ |
10 | ||
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11 | #ifndef _ASM_X86_CALGARY_H |
12 | #define _ASM_X86_CALGARY_H | |
e465058d | 13 | |
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14 | #include <linux/spinlock.h> |
15 | #include <linux/device.h> | |
16 | #include <linux/dma-mapping.h> | |
e8edc6e0 | 17 | #include <linux/timer.h> |
e465058d JM |
18 | #include <asm/types.h> |
19 | ||
20 | struct iommu_table { | |
d6b56b0b | 21 | const struct cal_chipset_ops *chip_ops; /* chipset specific funcs */ |
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22 | unsigned long it_base; /* mapped address of tce table */ |
23 | unsigned long it_hint; /* Hint for next alloc */ | |
24 | unsigned long *it_map; /* A simple allocation bitmap for now */ | |
5f4a7a93 MBY |
25 | void __iomem *bbar; /* Bridge BAR */ |
26 | u64 tar_val; /* Table Address Register */ | |
27 | struct timer_list watchdog_timer; | |
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28 | spinlock_t it_lock; /* Protects it_map */ |
29 | unsigned int it_size; /* Size of iommu table in entries */ | |
30 | unsigned char it_busno; /* Bus number this table belongs to */ | |
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31 | }; |
32 | ||
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33 | struct cal_chipset_ops { |
34 | void (*handle_quirks)(struct iommu_table *tbl, struct pci_dev *dev); | |
35 | void (*tce_cache_blast)(struct iommu_table *tbl); | |
8cb32dc7 | 36 | void (*dump_error_regs)(struct iommu_table *tbl); |
ff297b8c MBY |
37 | }; |
38 | ||
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39 | #define TCE_TABLE_SIZE_UNSPECIFIED ~0 |
40 | #define TCE_TABLE_SIZE_64K 0 | |
41 | #define TCE_TABLE_SIZE_128K 1 | |
42 | #define TCE_TABLE_SIZE_256K 2 | |
43 | #define TCE_TABLE_SIZE_512K 3 | |
44 | #define TCE_TABLE_SIZE_1M 4 | |
45 | #define TCE_TABLE_SIZE_2M 5 | |
46 | #define TCE_TABLE_SIZE_4M 6 | |
47 | #define TCE_TABLE_SIZE_8M 7 | |
48 | ||
bff6547b MBY |
49 | extern int use_calgary; |
50 | ||
e465058d | 51 | #ifdef CONFIG_CALGARY_IOMMU |
480125ba | 52 | extern int detect_calgary(void); |
e465058d | 53 | #else |
480125ba | 54 | static inline int detect_calgary(void) { return -ENODEV; } |
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55 | #endif |
56 | ||
1965aae3 | 57 | #endif /* _ASM_X86_CALGARY_H */ |