[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-x86_64 / calgary.h

/*
 * Derived from include/asm-powerpc/iommu.h
 *
 * Copyright (C) IBM Corporation, 2006
 *
 * 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_64_CALGARY_H
#define _ASM_X86_64_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 {
	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 */
};

#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 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

#endif /* _ASM_X86_64_CALGARY_H */
Commit	Line	Data
e465058d JM	1	/*
	2	* Derived from include/asm-powerpc/iommu.h
	3	*
aa0a9f37 MBY	4	* Copyright (C) IBM Corporation, 2006
	5	*
	6	* Author: Jon Mason <jdmason@us.ibm.com>
	7	* Author: Muli Ben-Yehuda <muli@il.ibm.com>
e465058d JM	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_64_CALGARY_H
	25	#define _ASM_X86_64_CALGARY_H
	26
e465058d JM	27	#include <linux/spinlock.h>
	28	#include <linux/device.h>
	29	#include <linux/dma-mapping.h>
e8edc6e0	30	#include <linux/timer.h>
e465058d JM	31	#include <asm/types.h>
	32
	33	struct iommu_table {
	34	unsigned long it_base; /* mapped address of tce table */
	35	unsigned long it_hint; /* Hint for next alloc */
	36	unsigned long it_map; / A simple allocation bitmap for now */
5f4a7a93 MBY	37	void __iomem bbar; / Bridge BAR */
	38	u64 tar_val; /* Table Address Register */
	39	struct timer_list watchdog_timer;
e465058d JM	40	spinlock_t it_lock; /* Protects it_map */
	41	unsigned int it_size; /* Size of iommu table in entries */
	42	unsigned char it_busno; /* Bus number this table belongs to */
e465058d JM	43	};
	44
	45	#define TCE_TABLE_SIZE_UNSPECIFIED ~0
	46	#define TCE_TABLE_SIZE_64K 0
	47	#define TCE_TABLE_SIZE_128K 1
	48	#define TCE_TABLE_SIZE_256K 2
	49	#define TCE_TABLE_SIZE_512K 3
	50	#define TCE_TABLE_SIZE_1M 4
	51	#define TCE_TABLE_SIZE_2M 5
	52	#define TCE_TABLE_SIZE_4M 6
	53	#define TCE_TABLE_SIZE_8M 7
	54
bff6547b MBY	55	extern int use_calgary;
bff6547b MBY	56
e465058d JM	57	#ifdef CONFIG_CALGARY_IOMMU
	58	extern int calgary_iommu_init(void);
	59	extern void detect_calgary(void);
	60	#else
	61	static inline int calgary_iommu_init(void) { return 1; }
	62	static inline void detect_calgary(void) { return; }
	63	#endif
	64
e465058d	65	#endif /* _ASM_X86_64_CALGARY_H */