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 33struct 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 */ 44}; 45 46struct 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 62extern int use_calgary; 63 64#ifdef CONFIG_CALGARY_IOMMU 65extern void detect_calgary(void); 66#else 67static inline void detect_calgary(void) { return; } 68#endif 69 70#endif /* _ASM_X86_CALGARY_H */ 71