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-rw-r--r--include/linux/dmar.h127
1 files changed, 100 insertions, 27 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 56c73b847551..c360c558e59e 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -25,9 +25,99 @@
25#include <linux/types.h> 25#include <linux/types.h>
26#include <linux/msi.h> 26#include <linux/msi.h>
27 27
28#ifdef CONFIG_DMAR 28#if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP)
29struct intel_iommu; 29struct intel_iommu;
30 30
31struct dmar_drhd_unit {
32 struct list_head list; /* list of drhd units */
33 struct acpi_dmar_header *hdr; /* ACPI header */
34 u64 reg_base_addr; /* register base address*/
35 struct pci_dev **devices; /* target device array */
36 int devices_cnt; /* target device count */
37 u8 ignored:1; /* ignore drhd */
38 u8 include_all:1;
39 struct intel_iommu *iommu;
40};
41
42extern struct list_head dmar_drhd_units;
43
44#define for_each_drhd_unit(drhd) \
45 list_for_each_entry(drhd, &dmar_drhd_units, list)
46
47extern int dmar_table_init(void);
48extern int early_dmar_detect(void);
49extern int dmar_dev_scope_init(void);
50
51/* Intel IOMMU detection */
52extern void detect_intel_iommu(void);
53
54
55extern int parse_ioapics_under_ir(void);
56extern int alloc_iommu(struct dmar_drhd_unit *);
57#else
58static inline void detect_intel_iommu(void)
59{
60 return;
61}
62
63static inline int dmar_table_init(void)
64{
65 return -ENODEV;
66}
67#endif /* !CONFIG_DMAR && !CONFIG_INTR_REMAP */
68
69#ifdef CONFIG_INTR_REMAP
70extern int intr_remapping_enabled;
71extern int enable_intr_remapping(int);
72
73struct irte {
74 union {
75 struct {
76 __u64 present : 1,
77 fpd : 1,
78 dst_mode : 1,
79 redir_hint : 1,
80 trigger_mode : 1,
81 dlvry_mode : 3,
82 avail : 4,
83 __reserved_1 : 4,
84 vector : 8,
85 __reserved_2 : 8,
86 dest_id : 32;
87 };
88 __u64 low;
89 };
90
91 union {
92 struct {
93 __u64 sid : 16,
94 sq : 2,
95 svt : 2,
96 __reserved_3 : 44;
97 };
98 __u64 high;
99 };
100};
101extern int get_irte(int irq, struct irte *entry);
102extern int modify_irte(int irq, struct irte *irte_modified);
103extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count);
104extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
105 u16 sub_handle);
106extern int map_irq_to_irte_handle(int irq, u16 *sub_handle);
107extern int clear_irte_irq(int irq, struct intel_iommu *iommu, u16 index);
108extern int flush_irte(int irq);
109extern int free_irte(int irq);
110
111extern int irq_remapped(int irq);
112extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev);
113extern struct intel_iommu *map_ioapic_to_ir(int apic);
114#else
115#define irq_remapped(irq) (0)
116#define enable_intr_remapping(mode) (-1)
117#define intr_remapping_enabled (0)
118#endif
119
120#ifdef CONFIG_DMAR
31extern const char *dmar_get_fault_reason(u8 fault_reason); 121extern const char *dmar_get_fault_reason(u8 fault_reason);
32 122
33/* Can't use the common MSI interrupt functions 123/* Can't use the common MSI interrupt functions
@@ -40,47 +130,30 @@ extern void dmar_msi_write(int irq, struct msi_msg *msg);
40extern int dmar_set_interrupt(struct intel_iommu *iommu); 130extern int dmar_set_interrupt(struct intel_iommu *iommu);
41extern int arch_setup_dmar_msi(unsigned int irq); 131extern int arch_setup_dmar_msi(unsigned int irq);
42 132
43/* Intel IOMMU detection and initialization functions */ 133extern int iommu_detected, no_iommu;
44extern void detect_intel_iommu(void);
45extern int intel_iommu_init(void);
46
47extern int dmar_table_init(void);
48extern int early_dmar_detect(void);
49
50extern struct list_head dmar_drhd_units;
51extern struct list_head dmar_rmrr_units; 134extern struct list_head dmar_rmrr_units;
52
53struct dmar_drhd_unit {
54 struct list_head list; /* list of drhd units */
55 u64 reg_base_addr; /* register base address*/
56 struct pci_dev **devices; /* target device array */
57 int devices_cnt; /* target device count */
58 u8 ignored:1; /* ignore drhd */
59 u8 include_all:1;
60 struct intel_iommu *iommu;
61};
62
63struct dmar_rmrr_unit { 135struct dmar_rmrr_unit {
64 struct list_head list; /* list of rmrr units */ 136 struct list_head list; /* list of rmrr units */
137 struct acpi_dmar_header *hdr; /* ACPI header */
65 u64 base_address; /* reserved base address*/ 138 u64 base_address; /* reserved base address*/
66 u64 end_address; /* reserved end address */ 139 u64 end_address; /* reserved end address */
67 struct pci_dev **devices; /* target devices */ 140 struct pci_dev **devices; /* target devices */
68 int devices_cnt; /* target device count */ 141 int devices_cnt; /* target device count */
69}; 142};
70 143
71#define for_each_drhd_unit(drhd) \
72 list_for_each_entry(drhd, &dmar_drhd_units, list)
73#define for_each_rmrr_units(rmrr) \ 144#define for_each_rmrr_units(rmrr) \
74 list_for_each_entry(rmrr, &dmar_rmrr_units, list) 145 list_for_each_entry(rmrr, &dmar_rmrr_units, list)
146/* Intel DMAR initialization functions */
147extern int intel_iommu_init(void);
148extern int dmar_disabled;
75#else 149#else
76static inline void detect_intel_iommu(void)
77{
78 return;
79}
80static inline int intel_iommu_init(void) 150static inline int intel_iommu_init(void)
81{ 151{
152#ifdef CONFIG_INTR_REMAP
153 return dmar_dev_scope_init();
154#else
82 return -ENODEV; 155 return -ENODEV;
156#endif
83} 157}
84
85#endif /* !CONFIG_DMAR */ 158#endif /* !CONFIG_DMAR */
86#endif /* __DMAR_H__ */ 159#endif /* __DMAR_H__ */
generated by cgit v1.2.2 (git 2.25.0) at 2025-11-01 19:23:09 -0400