[linux-2.6-block.git] / drivers / iommu / intel-pasid.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * intel-pasid.h - PASID idr, table and entry header
 *
 * Copyright (C) 2018 Intel Corporation
 *
 * Author: Lu Baolu <baolu.lu@linux.intel.com>
 */

#ifndef __INTEL_PASID_H
#define __INTEL_PASID_H

#define PASID_MIN			0x1
#define PASID_MAX			0x20000

struct pasid_entry {
	u64 val;
};

/* The representative of a PASID table */
struct pasid_table {
	void			*table;		/* pasid table pointer */
	int			order;		/* page order of pasid table */
	int			max_pasid;	/* max pasid */
	struct list_head	dev;		/* device list */
};

extern u32 intel_pasid_max_id;
int intel_pasid_alloc_id(void *ptr, int start, int end, gfp_t gfp);
void intel_pasid_free_id(int pasid);
void *intel_pasid_lookup_id(int pasid);
int intel_pasid_alloc_table(struct device *dev);
void intel_pasid_free_table(struct device *dev);
struct pasid_table *intel_pasid_get_table(struct device *dev);
int intel_pasid_get_dev_max_id(struct device *dev);
struct pasid_entry *intel_pasid_get_entry(struct device *dev, int pasid);
void intel_pasid_clear_entry(struct device *dev, int pasid);

#endif /* __INTEL_PASID_H */
Commit	Line	Data
56283174 LB	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/*
	3	* intel-pasid.h - PASID idr, table and entry header
	4	*
	5	* Copyright (C) 2018 Intel Corporation
	6	*
	7	* Author: Lu Baolu <baolu.lu@linux.intel.com>
	8	*/
	9
	10	#ifndef __INTEL_PASID_H
	11	#define __INTEL_PASID_H
	12
	13	#define PASID_MIN 0x1
be9e6598	14	#define PASID_MAX 0x20000
56283174	15
cc580e41 LB	16	struct pasid_entry {
	17	u64 val;
	18	};
	19
	20	/* The representative of a PASID table */
	21	struct pasid_table {
	22	void table; / pasid table pointer */
	23	int order; /* page order of pasid table */
	24	int max_pasid; /* max pasid */
	25	struct list_head dev; /* device list */
	26	};
	27
56283174 LB	28	extern u32 intel_pasid_max_id;
	29	int intel_pasid_alloc_id(void *ptr, int start, int end, gfp_t gfp);
	30	void intel_pasid_free_id(int pasid);
	31	void *intel_pasid_lookup_id(int pasid);
cc580e41 LB	32	int intel_pasid_alloc_table(struct device *dev);
	33	void intel_pasid_free_table(struct device *dev);
	34	struct pasid_table intel_pasid_get_table(struct device dev);
	35	int intel_pasid_get_dev_max_id(struct device *dev);
	36	struct pasid_entry intel_pasid_get_entry(struct device dev, int pasid);
	37	void intel_pasid_clear_entry(struct device *dev, int pasid);
56283174 LB	38
56283174 LB	39	#endif /* __INTEL_PASID_H */