arch/arm64/include/asm/acpi.h

Source file repositories/reference/linux-study-clean/arch/arm64/include/asm/acpi.h

File Facts

System
Linux kernel
Corpus path
arch/arm64/include/asm/acpi.h
Extension
.h
Size
5342 bytes
Lines
177
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

static inline void arch_fix_phys_package_id(int num, u32 slot) { }
void __init acpi_init_cpus(void);
int apei_claim_sea(struct pt_regs *regs);
#else
static inline void acpi_init_cpus(void) { }
static inline int apei_claim_sea(struct pt_regs *regs) { return -ENOENT; }
#endif /* CONFIG_ACPI */

#ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL
bool acpi_parking_protocol_valid(int cpu);
void __init
acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor);
#else
static inline bool acpi_parking_protocol_valid(int cpu) { return false; }
static inline void
acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor)
{}
#endif

static __always_inline const char *acpi_get_enable_method(int cpu)
{
	if (acpi_psci_present())
		return "psci";

	if (acpi_parking_protocol_valid(cpu))
		return "parking-protocol";

	return NULL;
}

#ifdef	CONFIG_ACPI_APEI
/*
 * acpi_disable_cmcff is used in drivers/acpi/apei/hest.c for disabling
 * IA-32 Architecture Corrected Machine Check (CMC) Firmware-First mode
 * with a kernel command line parameter "acpi=nocmcoff". But we don't
 * have this IA-32 specific feature on ARM64, this definition is only
 * for compatibility.
 */
#define acpi_disable_cmcff 1
static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
{
	return __acpi_get_mem_attribute(addr);
}
#endif /* CONFIG_ACPI_APEI */

#ifdef CONFIG_ACPI_NUMA
int arm64_acpi_numa_init(void);
int acpi_numa_get_nid(unsigned int cpu);
void acpi_map_cpus_to_nodes(void);
#else
static inline int arm64_acpi_numa_init(void) { return -ENOSYS; }
static inline int acpi_numa_get_nid(unsigned int cpu) { return NUMA_NO_NODE; }
static inline void acpi_map_cpus_to_nodes(void) { }
#endif /* CONFIG_ACPI_NUMA */

#define ACPI_TABLE_UPGRADE_MAX_PHYS MEMBLOCK_ALLOC_ACCESSIBLE

#endif /*_ASM_ACPI_H*/

Annotation

Implementation Notes