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/*
* Derived from include/asm-powerpc/iommu.h
*
* Copyright IBM Corporation, 2006-2007
*
* Author: Jon Mason <jdmason@us.ibm.com>
* Author: Muli Ben-Yehuda <muli@il.ibm.com>
*
* 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_CALGARY_H
#define _ASM_X86_CALGARY_H
#include <linux/spinlock.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/timer.h>
#include <asm/types.h>
struct iommu_table {
struct cal_chipset_ops *chip_ops; /* chipset specific funcs */
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 */
void __iomem *bbar; /* Bridge BAR */
u64 tar_val; /* Table Address Register */
struct timer_list watchdog_timer;
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 */
};
struct cal_chipset_ops {
void (*handle_quirks)(struct iommu_table *tbl, struct pci_dev *dev);
void (*tce_cache_blast)(struct iommu_table *tbl);
void (*dump_error_regs)(struct iommu_table *tbl);
};
#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
extern int use_calgary;
#ifdef CONFIG_CALGARY_IOMMU
extern int detect_calgary(void);
#else
static inline int detect_calgary(void) { return -ENODEV; }
#endif
#endif /* _ASM_X86_CALGARY_H */