| /* |
| * Derived from include/asm-powerpc/iommu.h |
| * |
| * Copyright (C) 2006 Jon Mason <jdmason@us.ibm.com>, IBM Corporation |
| * Copyright (C) 2006 Muli Ben-Yehuda <muli@il.ibm.com>, IBM Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef _ASM_X86_64_CALGARY_H |
| #define _ASM_X86_64_CALGARY_H |
| |
| #include <linux/config.h> |
| #include <linux/spinlock.h> |
| #include <linux/device.h> |
| #include <linux/dma-mapping.h> |
| #include <asm/types.h> |
| |
| struct iommu_table { |
| unsigned long it_base; /* mapped address of tce table */ |
| unsigned long it_hint; /* Hint for next alloc */ |
| unsigned long *it_map; /* A simple allocation bitmap for now */ |
| spinlock_t it_lock; /* Protects it_map */ |
| unsigned int it_size; /* Size of iommu table in entries */ |
| unsigned char it_busno; /* Bus number this table belongs to */ |
| void __iomem *bbar; |
| u64 tar_val; |
| struct timer_list watchdog_timer; |
| }; |
| |
| #define TCE_TABLE_SIZE_UNSPECIFIED ~0 |
| #define TCE_TABLE_SIZE_64K 0 |
| #define TCE_TABLE_SIZE_128K 1 |
| #define TCE_TABLE_SIZE_256K 2 |
| #define TCE_TABLE_SIZE_512K 3 |
| #define TCE_TABLE_SIZE_1M 4 |
| #define TCE_TABLE_SIZE_2M 5 |
| #define TCE_TABLE_SIZE_4M 6 |
| #define TCE_TABLE_SIZE_8M 7 |
| |
| #ifdef CONFIG_CALGARY_IOMMU |
| extern int calgary_iommu_init(void); |
| extern void detect_calgary(void); |
| #else |
| static inline int calgary_iommu_init(void) { return 1; } |
| static inline void detect_calgary(void) { return; } |
| #endif |
| |
| static inline unsigned int bus_to_phb(unsigned char busno) |
| { |
| return ((busno % 15 == 0) ? 0 : busno / 2 + 1); |
| } |
| |
| #endif /* _ASM_X86_64_CALGARY_H */ |
