[deliverable/linux.git] / include / linux / dmar.h

/*
 * Copyright (c) 2006, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 *
 * Copyright (C) Ashok Raj <ashok.raj@intel.com>
 * Copyright (C) Shaohua Li <shaohua.li@intel.com>
 */

#ifndef __DMAR_H__
#define __DMAR_H__

#include <linux/acpi.h>
#include <linux/types.h>
#include <linux/msi.h>

#ifdef CONFIG_DMAR
struct intel_iommu;

extern const char *dmar_get_fault_reason(u8 fault_reason);

/* Can't use the common MSI interrupt functions
 * since DMAR is not a pci device
 */
extern void dmar_msi_unmask(unsigned int irq);
extern void dmar_msi_mask(unsigned int irq);
extern void dmar_msi_read(int irq, struct msi_msg *msg);
extern void dmar_msi_write(int irq, struct msi_msg *msg);
extern int dmar_set_interrupt(struct intel_iommu *iommu);
extern int arch_setup_dmar_msi(unsigned int irq);

/* Intel IOMMU detection and initialization functions */
extern void detect_intel_iommu(void);
extern int intel_iommu_init(void);

extern int dmar_table_init(void);
extern int early_dmar_detect(void);
extern int dmar_dev_scope_init(void);
extern int parse_ioapics_under_ir(void);

extern struct list_head dmar_drhd_units;
extern struct list_head dmar_rmrr_units;

struct dmar_drhd_unit {
	struct list_head list;		/* list of drhd units	*/
	struct  acpi_dmar_header *hdr;	/* ACPI header		*/
	u64	reg_base_addr;		/* register base address*/
	struct	pci_dev **devices; 	/* target device array	*/
	int	devices_cnt;		/* target device count	*/
	u8	ignored:1; 		/* ignore drhd		*/
	u8	include_all:1;
	struct intel_iommu *iommu;
};

struct dmar_rmrr_unit {
	struct list_head list;		/* list of rmrr units	*/
	struct acpi_dmar_header *hdr;	/* ACPI header		*/
	u64	base_address;		/* reserved base address*/
	u64	end_address;		/* reserved end address */
	struct pci_dev **devices;	/* target devices */
	int	devices_cnt;		/* target device count */
};

#define for_each_drhd_unit(drhd) \
	list_for_each_entry(drhd, &dmar_drhd_units, list)
#define for_each_rmrr_units(rmrr) \
	list_for_each_entry(rmrr, &dmar_rmrr_units, list)

extern int alloc_iommu(struct dmar_drhd_unit *);
#else
static inline void detect_intel_iommu(void)
{
	return;
}
static inline int intel_iommu_init(void)
{
	return -ENODEV;
}
static inline int dmar_table_init(void)
{
	return -ENODEV;
}
#endif /* !CONFIG_DMAR */
#endif /* __DMAR_H__ */
Commit	Line	Data
10e5247f KA	1	/*
	2	* Copyright (c) 2006, Intel Corporation.
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms and conditions of the GNU General Public License,
	6	* version 2, as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
	15	* Place - Suite 330, Boston, MA 02111-1307 USA.
	16	*
	17	* Copyright (C) Ashok Raj <ashok.raj@intel.com>
	18	* Copyright (C) Shaohua Li <shaohua.li@intel.com>
	19	*/
	20
	21	#ifndef __DMAR_H__
	22	#define __DMAR_H__
	23
	24	#include <linux/acpi.h>
	25	#include <linux/types.h>
ba395927	26	#include <linux/msi.h>
10e5247f	27
ba395927 KA	28	#ifdef CONFIG_DMAR
	29	struct intel_iommu;
	30
d94afc6c	31	extern const char *dmar_get_fault_reason(u8 fault_reason);
3460a6d9 KA	32
	33	/* Can't use the common MSI interrupt functions
	34	* since DMAR is not a pci device
	35	*/
	36	extern void dmar_msi_unmask(unsigned int irq);
	37	extern void dmar_msi_mask(unsigned int irq);
	38	extern void dmar_msi_read(int irq, struct msi_msg *msg);
	39	extern void dmar_msi_write(int irq, struct msi_msg *msg);
	40	extern int dmar_set_interrupt(struct intel_iommu *iommu);
	41	extern int arch_setup_dmar_msi(unsigned int irq);
	42
ba395927 KA	43	/* Intel IOMMU detection and initialization functions */
	44	extern void detect_intel_iommu(void);
	45	extern int intel_iommu_init(void);
10e5247f KA	46
	47	extern int dmar_table_init(void);
	48	extern int early_dmar_detect(void);
1886e8a9	49	extern int dmar_dev_scope_init(void);
ad3ad3f6	50	extern int parse_ioapics_under_ir(void);
10e5247f KA	51
	52	extern struct list_head dmar_drhd_units;
	53	extern struct list_head dmar_rmrr_units;
	54
	55	struct dmar_drhd_unit {
	56	struct list_head list; /* list of drhd units */
1886e8a9	57	struct acpi_dmar_header hdr; / ACPI header */
10e5247f KA	58	u64 reg_base_addr; /* register base address*/
	59	struct pci_dev *devices; / target device array */
	60	int devices_cnt; /* target device count */
	61	u8 ignored:1; /* ignore drhd */
	62	u8 include_all:1;
	63	struct intel_iommu *iommu;
	64	};
	65
	66	struct dmar_rmrr_unit {
	67	struct list_head list; /* list of rmrr units */
1886e8a9	68	struct acpi_dmar_header hdr; / ACPI header */
10e5247f KA	69	u64 base_address; /* reserved base address*/
	70	u64 end_address; /* reserved end address */
	71	struct pci_dev *devices; / target devices */
	72	int devices_cnt; /* target device count */
	73	};
	74
ba395927 KA	75	#define for_each_drhd_unit(drhd) \
	76	list_for_each_entry(drhd, &dmar_drhd_units, list)
	77	#define for_each_rmrr_units(rmrr) \
	78	list_for_each_entry(rmrr, &dmar_rmrr_units, list)
1886e8a9 SS	79
1886e8a9 SS	80	extern int alloc_iommu(struct dmar_drhd_unit *);
ba395927 KA	81	#else
	82	static inline void detect_intel_iommu(void)
	83	{
	84	return;
	85	}
	86	static inline int intel_iommu_init(void)
	87	{
	88	return -ENODEV;
	89	}
1886e8a9 SS	90	static inline int dmar_table_init(void)
	91	{
	92	return -ENODEV;
	93	}
ba395927	94	#endif /* !CONFIG_DMAR */
10e5247f	95	#endif /* __DMAR_H__ */