include/linux/dmar.h - kernel/mindspeed - Git at Google

 /*
  * 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_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);

 /* Intel IOMMU detection */
 extern int detect_intel_iommu(void);
 extern int enable_drhd_fault_handling(void);

 extern int parse_ioapics_under_ir(void);
 extern int alloc_iommu(struct dmar_drhd_unit *);
 #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;
 	};
 };

 #ifdef CONFIG_IRQ_REMAP
 extern int intr_remapping_enabled;
 extern int intr_remapping_supported(void);
 extern int enable_intr_remapping(void);
 extern void disable_intr_remapping(void);
 extern int reenable_intr_remapping(int);

 extern int get_irte(int irq, struct irte *entry);
 extern int modify_irte(int irq, struct irte *irte_modified);
 extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count);
 extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
    			u16 sub_handle);
 extern int map_irq_to_irte_handle(int irq, u16 *sub_handle);
 extern int free_irte(int irq);

 extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev);
 extern struct intel_iommu *map_ioapic_to_ir(int apic);
 extern struct intel_iommu *map_hpet_to_ir(u8 id);
 extern int set_ioapic_sid(struct irte *irte, int apic);
 extern int set_hpet_sid(struct irte *irte, u8 id);
 extern int set_msi_sid(struct irte *irte, struct pci_dev *dev);
 #else
 static inline int alloc_irte(struct intel_iommu *iommu, int irq, u16 count)
 {
 	return -1;
 }
 static inline int modify_irte(int irq, struct irte *irte_modified)
 {
 	return -1;
 }
 static inline int free_irte(int irq)
 {
 	return -1;
 }
 static inline int map_irq_to_irte_handle(int irq, u16 *sub_handle)
 {
 	return -1;
 }
 static inline int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
 			       u16 sub_handle)
 {
 	return -1;
 }
 static inline struct intel_iommu *map_dev_to_ir(struct pci_dev *dev)
 {
 	return NULL;
 }
 static inline struct intel_iommu *map_ioapic_to_ir(int apic)
 {
 	return NULL;
 }
 static inline struct intel_iommu *map_hpet_to_ir(unsigned int hpet_id)
 {
 	return NULL;
 }
 static inline int set_ioapic_sid(struct irte *irte, int apic)
 {
 	return 0;
 }
 static inline int set_hpet_sid(struct irte *irte, u8 id)
 {
 	return -1;
 }
 static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev)
 {
 	return 0;
 }

 #define intr_remapping_enabled		(0)

 static inline int enable_intr_remapping(void)
 {
 	return -1;
 }

 static inline void disable_intr_remapping(void)
 {
 }

 static inline int reenable_intr_remapping(int eim)
 {
 	return 0;
 }
 #endif

 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 dmar_parse_dev_scope(void *start, void *end, int *cnt,
 				struct pci_dev ***devices, u16 segment);
 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__ */
	/*
	* 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_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);

	/* Intel IOMMU detection */
	extern int detect_intel_iommu(void);
	extern int enable_drhd_fault_handling(void);

	extern int parse_ioapics_under_ir(void);
	extern int alloc_iommu(struct dmar_drhd_unit *);
	#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;
	};
	};

	#ifdef CONFIG_IRQ_REMAP
	extern int intr_remapping_enabled;
	extern int intr_remapping_supported(void);
	extern int enable_intr_remapping(void);
	extern void disable_intr_remapping(void);
	extern int reenable_intr_remapping(int);

	extern int get_irte(int irq, struct irte *entry);
	extern int modify_irte(int irq, struct irte *irte_modified);
	extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count);
	extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
	u16 sub_handle);
	extern int map_irq_to_irte_handle(int irq, u16 *sub_handle);
	extern int free_irte(int irq);

	extern struct intel_iommu map_dev_to_ir(struct pci_dev dev);
	extern struct intel_iommu *map_ioapic_to_ir(int apic);
	extern struct intel_iommu *map_hpet_to_ir(u8 id);
	extern int set_ioapic_sid(struct irte *irte, int apic);
	extern int set_hpet_sid(struct irte *irte, u8 id);
	extern int set_msi_sid(struct irte irte, struct pci_dev dev);
	#else
	static inline int alloc_irte(struct intel_iommu *iommu, int irq, u16 count)
	{
	return -1;
	}
	static inline int modify_irte(int irq, struct irte *irte_modified)
	{
	return -1;
	}
	static inline int free_irte(int irq)
	{
	return -1;
	}
	static inline int map_irq_to_irte_handle(int irq, u16 *sub_handle)
	{
	return -1;
	}
	static inline int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
	u16 sub_handle)
	{
	return -1;
	}
	static inline struct intel_iommu map_dev_to_ir(struct pci_dev dev)
	{
	return NULL;
	}
	static inline struct intel_iommu *map_ioapic_to_ir(int apic)
	{
	return NULL;
	}
	static inline struct intel_iommu *map_hpet_to_ir(unsigned int hpet_id)
	{
	return NULL;
	}
	static inline int set_ioapic_sid(struct irte *irte, int apic)
	{
	return 0;
	}
	static inline int set_hpet_sid(struct irte *irte, u8 id)
	{
	return -1;
	}
	static inline int set_msi_sid(struct irte irte, struct pci_dev dev)
	{
	return 0;
	}

	#define intr_remapping_enabled (0)

	static inline int enable_intr_remapping(void)
	{
	return -1;
	}

	static inline void disable_intr_remapping(void)
	{
	}

	static inline int reenable_intr_remapping(int eim)
	{
	return 0;
	}
	#endif

	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 dmar_parse_dev_scope(void start, void end, int *cnt,
	struct pci_dev ***devices, u16 segment);
	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__ */