arch/powerpc/include/asm/fadump-internal.h

Source file repositories/reference/linux-study-clean/arch/powerpc/include/asm/fadump-internal.h

File Facts

System
Linux kernel
Corpus path
arch/powerpc/include/asm/fadump-internal.h
Extension
.h
Size
5481 bytes
Lines
197
Domain
Architecture Layer
Bucket
arch/powerpc
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

struct fadump_crash_info_header {
	u64		magic_number;
	u32		version;
	u32		crashing_cpu;
	u64		vmcoreinfo_raddr;
	u64		vmcoreinfo_size;
	u32		pt_regs_sz;
	u32		cpu_mask_sz;
	struct pt_regs	regs;
	struct cpumask	cpu_mask;
};

struct fadump_memory_range {
	u64	base;
	u64	size;
};

/* fadump memory ranges info */
#define RNG_NAME_SZ			16
struct fadump_mrange_info {
	char				name[RNG_NAME_SZ];
	struct fadump_memory_range	*mem_ranges;
	u32				mem_ranges_sz;
	u32				mem_range_cnt;
	u32				max_mem_ranges;
	bool				is_static;
};

/* Platform specific callback functions */
struct fadump_ops;

/* Firmware-assisted dump configuration details. */
struct fw_dump {
	unsigned long	reserve_dump_area_start;
	unsigned long	reserve_dump_area_size;
	/* cmd line option during boot */
	unsigned long	reserve_bootvar;

	unsigned long	cpu_state_data_size;
	u64		cpu_state_dest_vaddr;
	u32		cpu_state_data_version;
	u32		cpu_state_entry_size;

	unsigned long	hpte_region_size;

	unsigned long	boot_memory_size;
	u64		boot_mem_dest_addr;
	u64		boot_mem_addr[FADUMP_MAX_MEM_REGS];
	u64		boot_mem_sz[FADUMP_MAX_MEM_REGS];
	u64		boot_mem_top;
	u64		boot_mem_regs_cnt;

	unsigned long	fadumphdr_addr;
	u64		elfcorehdr_addr;
	u64		elfcorehdr_size;
	unsigned long	cpu_notes_buf_vaddr;
	unsigned long	cpu_notes_buf_size;

	unsigned long	param_area;

	/*
	 * Maximum size supported by firmware to copy from source to
	 * destination address per entry.
	 */
	u64		max_copy_size;
	u64		kernel_metadata;

	int		ibm_configure_kernel_dump;

	unsigned long	fadump_enabled:1;
	unsigned long	fadump_supported:1;
	unsigned long	dump_active:1;
	unsigned long	dump_registered:1;
	unsigned long	nocma:1;
	unsigned long	param_area_supported:1;

	struct fadump_ops	*ops;
};

struct fadump_ops {
	u64	(*fadump_init_mem_struct)(struct fw_dump *fadump_conf);
	u64	(*fadump_get_metadata_size)(void);
	int	(*fadump_setup_metadata)(struct fw_dump *fadump_conf);
	u64	(*fadump_get_bootmem_min)(void);
	int	(*fadump_register)(struct fw_dump *fadump_conf);
	int	(*fadump_unregister)(struct fw_dump *fadump_conf);
	int	(*fadump_invalidate)(struct fw_dump *fadump_conf);
	void	(*fadump_cleanup)(struct fw_dump *fadump_conf);
	int	(*fadump_process)(struct fw_dump *fadump_conf);
	void	(*fadump_region_show)(struct fw_dump *fadump_conf,

Annotation

Implementation Notes