projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e465058d JM |
1 | /* |
| 2 | * Derived from include/asm-powerpc/iommu.h | |
| 3 | * | |
| 4 | * Copyright (C) 2006 Jon Mason <jdmason@us.ibm.com>, IBM Corporation | |
| 5 | * Copyright (C) 2006 Muli Ben-Yehuda <muli@il.ibm.com>, IBM Corporation | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #ifndef _ASM_X86_64_CALGARY_H | |
| 23 | #define _ASM_X86_64_CALGARY_H | |
| 24 | ||
| 25 | #include <linux/config.h> | |
| 26 | #include <linux/spinlock.h> | |
| 27 | #include <linux/device.h> | |
| 28 | #include <linux/dma-mapping.h> | |
| 29 | #include <asm/types.h> | |
| 30 | ||
| 31 | struct iommu_table { | |
| 32 | unsigned long it_base; /* mapped address of tce table */ | |
| 33 | unsigned long it_hint; /* Hint for next alloc */ | |
| 34 | unsigned long *it_map; /* A simple allocation bitmap for now */ | |
| 35 | spinlock_t it_lock; /* Protects it_map */ | |
| 36 | unsigned int it_size; /* Size of iommu table in entries */ | |
| 37 | unsigned char it_busno; /* Bus number this table belongs to */ | |
| 38 | void __iomem *bbar; | |
| 39 | u64 tar_val; | |
| 40 | struct timer_list watchdog_timer; | |
| 41 | }; | |
| 42 | ||
| 43 | #define TCE_TABLE_SIZE_UNSPECIFIED ~0 | |
| 44 | #define TCE_TABLE_SIZE_64K 0 | |
| 45 | #define TCE_TABLE_SIZE_128K 1 | |
| 46 | #define TCE_TABLE_SIZE_256K 2 | |
| 47 | #define TCE_TABLE_SIZE_512K 3 | |
| 48 | #define TCE_TABLE_SIZE_1M 4 | |
| 49 | #define TCE_TABLE_SIZE_2M 5 | |
| 50 | #define TCE_TABLE_SIZE_4M 6 | |
| 51 | #define TCE_TABLE_SIZE_8M 7 | |
| 52 | ||
| 53 | #ifdef CONFIG_CALGARY_IOMMU | |
| 54 | extern int calgary_iommu_init(void); | |
| 55 | extern void detect_calgary(void); | |
| 56 | #else | |
| 57 | static inline int calgary_iommu_init(void) { return 1; } | |
| 58 | static inline void detect_calgary(void) { return; } | |
| 59 | #endif | |
| 60 | ||
| 61 | static inline unsigned int bus_to_phb(unsigned char busno) | |
| 62 | { | |
| 63 | return ((busno % 15 == 0) ? 0 : busno / 2 + 1); | |
| 64 | } | |
| 65 | ||
| 66 | #endif /* _ASM_X86_64_CALGARY_H */ |