include/linux/amd-iommu.h

Source file repositories/reference/linux-study-clean/include/linux/amd-iommu.h

File Facts

System
Linux kernel
Corpus path
include/linux/amd-iommu.h
Extension
.h
Size
2064 bytes
Lines
80
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

static inline void amd_iommu_detect(void) { }

#endif /* CONFIG_AMD_IOMMU */

#if defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP)

/* IOMMU AVIC Function */
extern int amd_iommu_register_ga_log_notifier(int (*notifier)(u32));

extern int amd_iommu_update_ga(void *data, int cpu, bool ga_log_intr);
extern int amd_iommu_activate_guest_mode(void *data, int cpu, bool ga_log_intr);
extern int amd_iommu_deactivate_guest_mode(void *data);

#else /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */

static inline int
amd_iommu_register_ga_log_notifier(int (*notifier)(u32))
{
	return 0;
}

static inline int amd_iommu_update_ga(void *data, int cpu, bool ga_log_intr)
{
	return 0;
}

static inline int amd_iommu_activate_guest_mode(void *data, int cpu, bool ga_log_intr)
{
	return 0;
}

static inline int amd_iommu_deactivate_guest_mode(void *data)
{
	return 0;
}
#endif /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */

int amd_iommu_get_num_iommus(void);
bool amd_iommu_pc_supported(void);
u8 amd_iommu_pc_get_max_banks(unsigned int idx);
u8 amd_iommu_pc_get_max_counters(unsigned int idx);
int amd_iommu_pc_set_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, u8 fxn,
		u64 *value);
int amd_iommu_pc_get_reg(struct amd_iommu *iommu, u8 bank, u8 cntr, u8 fxn,
		u64 *value);
struct amd_iommu *get_amd_iommu(unsigned int idx);

#ifdef CONFIG_KVM_AMD_SEV
int amd_iommu_snp_disable(void);
extern bool amd_iommu_sev_tio_supported(void);
#else
static inline int amd_iommu_snp_disable(void) { return 0; }
static inline bool amd_iommu_sev_tio_supported(void) { return false; }
#endif

#endif /* _ASM_X86_AMD_IOMMU_H */

Annotation

Implementation Notes