[mirror_ubuntu-bionic-kernel.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>
#include <linux/irqreturn.h>

struct acpi_dmar_header;

/* DMAR Flags */
#define DMAR_INTR_REMAP		0x1
#define DMAR_X2APIC_OPT_OUT	0x2

struct intel_iommu;

#ifdef CONFIG_DMAR_TABLE
extern struct acpi_table_header *dmar_tbl;
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	*/
	u16	segment;		/* PCI domain		*/
	u8	ignored:1; 		/* ignore drhd		*/
	u8	include_all:1;
	struct intel_iommu *iommu;
};

extern struct list_head dmar_drhd_units;

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

#define for_each_active_drhd_unit(drhd)					\
	list_for_each_entry(drhd, &dmar_drhd_units, list)		\
		if (drhd->ignored) {} else

#define for_each_active_iommu(i, drhd)					\
	list_for_each_entry(drhd, &dmar_drhd_units, list)		\
		if (i=drhd->iommu, drhd->ignored) {} else

#define for_each_iommu(i, drhd)						\
	list_for_each_entry(drhd, &dmar_drhd_units, list)		\
		if (i=drhd->iommu, 0) {} else 

extern int dmar_table_init(void);
extern int dmar_dev_scope_init(void);
extern int dmar_parse_dev_scope(void *start, void *end, int *cnt,
				struct pci_dev ***devices, u16 segment);
extern void dmar_free_dev_scope(struct pci_dev ***devices, int *cnt);

/* Intel IOMMU detection */
extern int detect_intel_iommu(void);
extern int enable_drhd_fault_handling(void);
#else
static inline int detect_intel_iommu(void)
{
	return -ENODEV;
}

static inline int dmar_table_init(void)
{
	return -ENODEV;
}
static inline int enable_drhd_fault_handling(void)
{
	return -1;
}
#endif /* !CONFIG_DMAR_TABLE */

struct irte {
	union {
		struct {
			__u64	present 	: 1,
				fpd		: 1,
				dst_mode	: 1,
				redir_hint	: 1,
				trigger_mode	: 1,
				dlvry_mode	: 3,
				avail		: 4,
				__reserved_1	: 4,
				vector		: 8,
				__reserved_2	: 8,
				dest_id		: 32;
		};
		__u64 low;
	};

	union {
		struct {
			__u64	sid		: 16,
				sq		: 2,
				svt		: 2,
				__reserved_3	: 44;
		};
		__u64 high;
	};
};

enum {
	IRQ_REMAP_XAPIC_MODE,
	IRQ_REMAP_X2APIC_MODE,
};

/* Can't use the common MSI interrupt functions
 * since DMAR is not a pci device
 */
struct irq_data;
extern void dmar_msi_unmask(struct irq_data *data);
extern void dmar_msi_mask(struct irq_data *data);
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 irqreturn_t dmar_fault(int irq, void *dev_id);
extern int arch_setup_dmar_msi(unsigned int irq);

#ifdef CONFIG_INTEL_IOMMU
extern int iommu_detected, no_iommu;
extern struct list_head dmar_rmrr_units;
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_rmrr_units(rmrr) \
	list_for_each_entry(rmrr, &dmar_rmrr_units, list)

struct dmar_atsr_unit {
	struct list_head list;		/* list of ATSR units */
	struct acpi_dmar_header *hdr;	/* ACPI header */
	struct pci_dev **devices;	/* target devices */
	int devices_cnt;		/* target device count */
	u8 include_all:1;		/* include all ports */
};

int dmar_parse_rmrr_atsr_dev(void);
extern int dmar_parse_one_rmrr(struct acpi_dmar_header *header);
extern int dmar_parse_one_atsr(struct acpi_dmar_header *header);
extern int intel_iommu_init(void);
#else /* !CONFIG_INTEL_IOMMU: */
static inline int intel_iommu_init(void) { return -ENODEV; }
static inline int dmar_parse_one_rmrr(struct acpi_dmar_header *header)
{
	return 0;
}
static inline int dmar_parse_one_atsr(struct acpi_dmar_header *header)
{
	return 0;
}
static inline int dmar_parse_rmrr_atsr_dev(void)
{
	return 0;
}
#endif /* CONFIG_INTEL_IOMMU */

#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>
1531a6a6	27	#include <linux/irqreturn.h>
10e5247f	28
6eea69dd AM	29	struct acpi_dmar_header;
6eea69dd AM	30
41750d31 SS	31	/* DMAR Flags */
	32	#define DMAR_INTR_REMAP 0x1
	33	#define DMAR_X2APIC_OPT_OUT 0x2
	34
ba395927	35	struct intel_iommu;
694835dc	36
d3f13810	37	#ifdef CONFIG_DMAR_TABLE
41750d31	38	extern struct acpi_table_header *dmar_tbl;
2ae21010 SS	39	struct dmar_drhd_unit {
	40	struct list_head list; /* list of drhd units */
	41	struct acpi_dmar_header hdr; / ACPI header */
	42	u64 reg_base_addr; /* register base address*/
	43	struct pci_dev *devices; / target device array */
	44	int devices_cnt; /* target device count */
276dbf99	45	u16 segment; /* PCI domain */
2ae21010 SS	46	u8 ignored:1; /* ignore drhd */
	47	u8 include_all:1;
	48	struct intel_iommu *iommu;
	49	};
	50
	51	extern struct list_head dmar_drhd_units;
	52
	53	#define for_each_drhd_unit(drhd) \
	54	list_for_each_entry(drhd, &dmar_drhd_units, list)
	55
7c919779 JL	56	#define for_each_active_drhd_unit(drhd) \
	57	list_for_each_entry(drhd, &dmar_drhd_units, list) \
	58	if (drhd->ignored) {} else
	59
8f912ba4 DW	60	#define for_each_active_iommu(i, drhd) \
	61	list_for_each_entry(drhd, &dmar_drhd_units, list) \
	62	if (i=drhd->iommu, drhd->ignored) {} else
	63
	64	#define for_each_iommu(i, drhd) \
	65	list_for_each_entry(drhd, &dmar_drhd_units, list) \
	66	if (i=drhd->iommu, 0) {} else
	67
2ae21010	68	extern int dmar_table_init(void);
2ae21010	69	extern int dmar_dev_scope_init(void);
ada4d4b2 JL	70	extern int dmar_parse_dev_scope(void start, void end, int *cnt,
	71	struct pci_dev ***devices, u16 segment);
	72	extern void dmar_free_dev_scope(struct pci_dev **devices, int cnt);
2ae21010 SS	73
2ae21010 SS	74	/* Intel IOMMU detection */
480125ba	75	extern int detect_intel_iommu(void);
9d783ba0	76	extern int enable_drhd_fault_handling(void);
2ae21010	77	#else
480125ba	78	static inline int detect_intel_iommu(void)
2ae21010	79	{
480125ba	80	return -ENODEV;
2ae21010 SS	81	}
	82
	83	static inline int dmar_table_init(void)
	84	{
	85	return -ENODEV;
	86	}
29b61be6 SS	87	static inline int enable_drhd_fault_handling(void)
	88	{
	89	return -1;
	90	}
d3f13810	91	#endif /* !CONFIG_DMAR_TABLE */
2ae21010	92
2ae21010 SS	93	struct irte {
	94	union {
	95	struct {
	96	__u64 present : 1,
	97	fpd : 1,
	98	dst_mode : 1,
	99	redir_hint : 1,
	100	trigger_mode : 1,
	101	dlvry_mode : 3,
	102	avail : 4,
	103	__reserved_1 : 4,
	104	vector : 8,
	105	__reserved_2 : 8,
	106	dest_id : 32;
	107	};
	108	__u64 low;
	109	};
	110
	111	union {
	112	struct {
	113	__u64 sid : 16,
	114	sq : 2,
	115	svt : 2,
	116	__reserved_3 : 44;
	117	};
	118	__u64 high;
	119	};
	120	};
423f0859	121
41750d31 SS	122	enum {
	123	IRQ_REMAP_XAPIC_MODE,
	124	IRQ_REMAP_X2APIC_MODE,
	125	};
	126
3460a6d9 KA	127	/* Can't use the common MSI interrupt functions
	128	* since DMAR is not a pci device
	129	*/
5c2837fb TG	130	struct irq_data;
	131	extern void dmar_msi_unmask(struct irq_data *data);
	132	extern void dmar_msi_mask(struct irq_data *data);
3460a6d9 KA	133	extern void dmar_msi_read(int irq, struct msi_msg *msg);
	134	extern void dmar_msi_write(int irq, struct msi_msg *msg);
	135	extern int dmar_set_interrupt(struct intel_iommu *iommu);
1531a6a6	136	extern irqreturn_t dmar_fault(int irq, void *dev_id);
3460a6d9 KA	137	extern int arch_setup_dmar_msi(unsigned int irq);
3460a6d9 KA	138
d3f13810	139	#ifdef CONFIG_INTEL_IOMMU
2ae21010	140	extern int iommu_detected, no_iommu;
10e5247f	141	extern struct list_head dmar_rmrr_units;
10e5247f KA	142	struct dmar_rmrr_unit {
10e5247f KA	143	struct list_head list; /* list of rmrr units */
1886e8a9	144	struct acpi_dmar_header hdr; / ACPI header */
10e5247f KA	145	u64 base_address; /* reserved base address*/
	146	u64 end_address; /* reserved end address */
	147	struct pci_dev *devices; / target devices */
	148	int devices_cnt; /* target device count */
	149	};
	150
ba395927 KA	151	#define for_each_rmrr_units(rmrr) \
ba395927 KA	152	list_for_each_entry(rmrr, &dmar_rmrr_units, list)
aa5d2b51 YZ	153
	154	struct dmar_atsr_unit {
	155	struct list_head list; /* list of ATSR units */
	156	struct acpi_dmar_header hdr; / ACPI header */
	157	struct pci_dev *devices; / target devices */
	158	int devices_cnt; /* target device count */
	159	u8 include_all:1; /* include all ports */
	160	};
	161
318fe7df SS	162	int dmar_parse_rmrr_atsr_dev(void);
	163	extern int dmar_parse_one_rmrr(struct acpi_dmar_header *header);
	164	extern int dmar_parse_one_atsr(struct acpi_dmar_header *header);
2ae21010	165	extern int intel_iommu_init(void);
d3f13810	166	#else /* !CONFIG_INTEL_IOMMU: */
9d5ce73a	167	static inline int intel_iommu_init(void) { return -ENODEV; }
318fe7df SS	168	static inline int dmar_parse_one_rmrr(struct acpi_dmar_header *header)
	169	{
	170	return 0;
	171	}
	172	static inline int dmar_parse_one_atsr(struct acpi_dmar_header *header)
	173	{
	174	return 0;
	175	}
	176	static inline int dmar_parse_rmrr_atsr_dev(void)
	177	{
	178	return 0;
	179	}
d3f13810	180	#endif /* CONFIG_INTEL_IOMMU */
9d5ce73a	181
10e5247f	182	#endif /* __DMAR_H__ */