265 lines
6.8 KiB
C
265 lines
6.8 KiB
C
/*
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* Copyright (c) 2006, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Copyright (C) Ashok Raj <ashok.raj@intel.com>
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* Copyright (C) Shaohua Li <shaohua.li@intel.com>
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*/
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#ifndef __DMAR_H__
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#define __DMAR_H__
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#include <linux/acpi.h>
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#include <linux/types.h>
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#include <linux/msi.h>
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#include <linux/irqreturn.h>
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struct acpi_dmar_header;
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/* DMAR Flags */
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#define DMAR_INTR_REMAP 0x1
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#define DMAR_X2APIC_OPT_OUT 0x2
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struct intel_iommu;
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#ifdef CONFIG_DMAR_TABLE
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extern struct acpi_table_header *dmar_tbl;
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struct dmar_drhd_unit {
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struct list_head list; /* list of drhd units */
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struct acpi_dmar_header *hdr; /* ACPI header */
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u64 reg_base_addr; /* register base address*/
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struct pci_dev **devices; /* target device array */
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int devices_cnt; /* target device count */
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u16 segment; /* PCI domain */
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u8 ignored:1; /* ignore drhd */
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u8 include_all:1;
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struct intel_iommu *iommu;
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};
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extern struct list_head dmar_drhd_units;
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#define for_each_drhd_unit(drhd) \
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list_for_each_entry(drhd, &dmar_drhd_units, list)
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#define for_each_active_iommu(i, drhd) \
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list_for_each_entry(drhd, &dmar_drhd_units, list) \
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if (i=drhd->iommu, drhd->ignored) {} else
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#define for_each_iommu(i, drhd) \
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list_for_each_entry(drhd, &dmar_drhd_units, list) \
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if (i=drhd->iommu, 0) {} else
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extern int dmar_table_init(void);
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extern int dmar_dev_scope_init(void);
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/* Intel IOMMU detection */
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extern int detect_intel_iommu(void);
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extern int enable_drhd_fault_handling(void);
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extern int parse_ioapics_under_ir(void);
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extern int alloc_iommu(struct dmar_drhd_unit *);
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#else
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static inline int detect_intel_iommu(void)
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{
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return -ENODEV;
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}
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static inline int dmar_table_init(void)
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{
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return -ENODEV;
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}
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static inline int enable_drhd_fault_handling(void)
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{
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return -1;
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}
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#endif /* !CONFIG_DMAR_TABLE */
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struct irte {
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union {
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struct {
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__u64 present : 1,
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fpd : 1,
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dst_mode : 1,
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redir_hint : 1,
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trigger_mode : 1,
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dlvry_mode : 3,
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avail : 4,
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__reserved_1 : 4,
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vector : 8,
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__reserved_2 : 8,
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dest_id : 32;
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};
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__u64 low;
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};
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union {
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struct {
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__u64 sid : 16,
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sq : 2,
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svt : 2,
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__reserved_3 : 44;
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};
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__u64 high;
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};
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};
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#ifdef CONFIG_IRQ_REMAP
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extern int intr_remapping_enabled;
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extern int intr_remapping_supported(void);
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extern int enable_intr_remapping(void);
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extern void disable_intr_remapping(void);
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extern int reenable_intr_remapping(int);
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extern int get_irte(int irq, struct irte *entry);
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extern int modify_irte(int irq, struct irte *irte_modified);
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extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count);
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extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
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u16 sub_handle);
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extern int map_irq_to_irte_handle(int irq, u16 *sub_handle);
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extern int free_irte(int irq);
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extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev);
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extern struct intel_iommu *map_ioapic_to_ir(int apic);
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extern struct intel_iommu *map_hpet_to_ir(u8 id);
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extern int set_ioapic_sid(struct irte *irte, int apic);
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extern int set_hpet_sid(struct irte *irte, u8 id);
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extern int set_msi_sid(struct irte *irte, struct pci_dev *dev);
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#else
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static inline int alloc_irte(struct intel_iommu *iommu, int irq, u16 count)
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{
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return -1;
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}
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static inline int modify_irte(int irq, struct irte *irte_modified)
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{
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return -1;
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}
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static inline int free_irte(int irq)
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{
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return -1;
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}
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static inline int map_irq_to_irte_handle(int irq, u16 *sub_handle)
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{
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return -1;
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}
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static inline int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
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u16 sub_handle)
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{
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return -1;
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}
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static inline struct intel_iommu *map_dev_to_ir(struct pci_dev *dev)
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{
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return NULL;
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}
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static inline struct intel_iommu *map_ioapic_to_ir(int apic)
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{
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return NULL;
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}
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static inline struct intel_iommu *map_hpet_to_ir(unsigned int hpet_id)
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{
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return NULL;
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}
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static inline int set_ioapic_sid(struct irte *irte, int apic)
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{
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return 0;
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}
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static inline int set_hpet_sid(struct irte *irte, u8 id)
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{
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return -1;
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}
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static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev)
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{
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return 0;
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}
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#define intr_remapping_enabled (0)
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static inline int enable_intr_remapping(void)
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{
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return -1;
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}
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static inline void disable_intr_remapping(void)
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{
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}
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static inline int reenable_intr_remapping(int eim)
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{
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return 0;
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}
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#endif
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enum {
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IRQ_REMAP_XAPIC_MODE,
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IRQ_REMAP_X2APIC_MODE,
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};
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/* Can't use the common MSI interrupt functions
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* since DMAR is not a pci device
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*/
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struct irq_data;
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extern void dmar_msi_unmask(struct irq_data *data);
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extern void dmar_msi_mask(struct irq_data *data);
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extern void dmar_msi_read(int irq, struct msi_msg *msg);
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extern void dmar_msi_write(int irq, struct msi_msg *msg);
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extern int dmar_set_interrupt(struct intel_iommu *iommu);
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extern irqreturn_t dmar_fault(int irq, void *dev_id);
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extern int arch_setup_dmar_msi(unsigned int irq);
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#ifdef CONFIG_INTEL_IOMMU
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extern int iommu_detected, no_iommu;
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extern struct list_head dmar_rmrr_units;
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struct dmar_rmrr_unit {
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struct list_head list; /* list of rmrr units */
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struct acpi_dmar_header *hdr; /* ACPI header */
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u64 base_address; /* reserved base address*/
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u64 end_address; /* reserved end address */
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struct pci_dev **devices; /* target devices */
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int devices_cnt; /* target device count */
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};
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#define for_each_rmrr_units(rmrr) \
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list_for_each_entry(rmrr, &dmar_rmrr_units, list)
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struct dmar_atsr_unit {
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struct list_head list; /* list of ATSR units */
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struct acpi_dmar_header *hdr; /* ACPI header */
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struct pci_dev **devices; /* target devices */
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int devices_cnt; /* target device count */
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u8 include_all:1; /* include all ports */
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};
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int dmar_parse_rmrr_atsr_dev(void);
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extern int dmar_parse_one_rmrr(struct acpi_dmar_header *header);
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extern int dmar_parse_one_atsr(struct acpi_dmar_header *header);
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extern int dmar_parse_dev_scope(void *start, void *end, int *cnt,
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struct pci_dev ***devices, u16 segment);
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extern int intel_iommu_init(void);
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#else /* !CONFIG_INTEL_IOMMU: */
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static inline int intel_iommu_init(void) { return -ENODEV; }
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static inline int dmar_parse_one_rmrr(struct acpi_dmar_header *header)
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{
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return 0;
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}
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static inline int dmar_parse_one_atsr(struct acpi_dmar_header *header)
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{
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return 0;
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}
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static inline int dmar_parse_rmrr_atsr_dev(void)
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{
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return 0;
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}
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#endif /* CONFIG_INTEL_IOMMU */
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#endif /* __DMAR_H__ */
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