[linux-block.git] / arch / s390 / include / asm / ipl.h

/*
 * s390 (re)ipl support
 *
 * Copyright IBM Corp. 2007
 */

#ifndef _ASM_S390_IPL_H
#define _ASM_S390_IPL_H

#include <asm/types.h>
#include <asm/cio.h>
#include <asm/setup.h>

#define IPL_PARMBLOCK_ORIGIN	0x2000

#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
			      sizeof(struct ipl_block_fcp))

#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 8)

#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
			      sizeof(struct ipl_block_ccw))

#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 8)

#define IPL_MAX_SUPPORTED_VERSION (0)

#define IPL_PARMBLOCK_START	((struct ipl_parameter_block *) \
				 IPL_PARMBLOCK_ORIGIN)
#define IPL_PARMBLOCK_SIZE	(IPL_PARMBLOCK_START->hdr.len)

struct ipl_list_hdr {
	u32 len;
	u8  reserved1[3];
	u8  version;
	u32 blk0_len;
	u8  pbt;
	u8  flags;
	u16 reserved2;
} __attribute__((packed));

struct ipl_block_fcp {
	u8  reserved1[313-1];
	u8  opt;
	u8  reserved2[3];
	u16 reserved3;
	u16 devno;
	u8  reserved4[4];
	u64 wwpn;
	u64 lun;
	u32 bootprog;
	u8  reserved5[12];
	u64 br_lba;
	u32 scp_data_len;
	u8  reserved6[260];
	u8  scp_data[];
} __attribute__((packed));

#define DIAG308_VMPARM_SIZE	64
#define DIAG308_SCPDATA_SIZE	(PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \
				 offsetof(struct ipl_block_fcp, scp_data)))

struct ipl_block_ccw {
	u8  load_parm[8];
	u8  reserved1[84];
	u8  reserved2[2];
	u16 devno;
	u8  vm_flags;
	u8  reserved3[3];
	u32 vm_parm_len;
	u8  nss_name[8];
	u8  vm_parm[DIAG308_VMPARM_SIZE];
	u8  reserved4[8];
} __attribute__((packed));

struct ipl_parameter_block {
	struct ipl_list_hdr hdr;
	union {
		struct ipl_block_fcp fcp;
		struct ipl_block_ccw ccw;
	} ipl_info;
} __attribute__((packed,aligned(4096)));

/*
 * IPL validity flags
 */
extern u32 ipl_flags;
extern u32 dump_prefix_page;
extern unsigned int zfcpdump_prefix_array[];

extern void do_reipl(void);
extern void do_halt(void);
extern void do_poff(void);
extern void ipl_save_parameters(void);
extern void ipl_update_parameters(void);
extern size_t append_ipl_vmparm(char *, size_t);
extern size_t append_ipl_scpdata(char *, size_t);

enum {
	IPL_DEVNO_VALID		= 1,
	IPL_PARMBLOCK_VALID	= 2,
	IPL_NSS_VALID		= 4,
};

enum ipl_type {
	IPL_TYPE_UNKNOWN	= 1,
	IPL_TYPE_CCW		= 2,
	IPL_TYPE_FCP		= 4,
	IPL_TYPE_FCP_DUMP	= 8,
	IPL_TYPE_NSS		= 16,
};

struct ipl_info
{
	enum ipl_type type;
	union {
		struct {
			struct ccw_dev_id dev_id;
		} ccw;
		struct {
			struct ccw_dev_id dev_id;
			u64 wwpn;
			u64 lun;
		} fcp;
		struct {
			char name[NSS_NAME_SIZE + 1];
		} nss;
	} data;
};

extern struct ipl_info ipl_info;
extern void setup_ipl(void);

/*
 * DIAG 308 support
 */
enum diag308_subcode  {
	DIAG308_REL_HSA	= 2,
	DIAG308_IPL	= 3,
	DIAG308_DUMP	= 4,
	DIAG308_SET	= 5,
	DIAG308_STORE	= 6,
};

enum diag308_ipl_type {
	DIAG308_IPL_TYPE_FCP	= 0,
	DIAG308_IPL_TYPE_CCW	= 2,
};

enum diag308_opt {
	DIAG308_IPL_OPT_IPL	= 0x10,
	DIAG308_IPL_OPT_DUMP	= 0x20,
};

enum diag308_flags {
	DIAG308_FLAGS_LP_VALID	= 0x80,
};

enum diag308_vm_flags {
	DIAG308_VM_FLAGS_NSS_VALID	= 0x80,
	DIAG308_VM_FLAGS_VP_VALID	= 0x40,
};

enum diag308_rc {
	DIAG308_RC_OK		= 0x0001,
	DIAG308_RC_NOCONFIG	= 0x0102,
};

extern int diag308(unsigned long subcode, void *addr);

#endif /* _ASM_S390_IPL_H */
Commit	Line	Data
46b05d26 MH	1	/*
	2	* s390 (re)ipl support
	3	*
	4	* Copyright IBM Corp. 2007
	5	*/
	6
	7	#ifndef _ASM_S390_IPL_H
	8	#define _ASM_S390_IPL_H
	9
	10	#include <asm/types.h>
411ed322 MH	11	#include <asm/cio.h>
411ed322 MH	12	#include <asm/setup.h>
46b05d26 MH	13
	14	#define IPL_PARMBLOCK_ORIGIN 0x2000
	15
	16	#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
	17	sizeof(struct ipl_block_fcp))
	18
fbb04f38 MH	19	#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 8)
fbb04f38 MH	20
46b05d26 MH	21	#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
	22	sizeof(struct ipl_block_ccw))
	23
fbb04f38 MH	24	#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 8)
fbb04f38 MH	25
46b05d26 MH	26	#define IPL_MAX_SUPPORTED_VERSION (0)
	27
	28	#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
	29	IPL_PARMBLOCK_ORIGIN)
	30	#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
	31
	32	struct ipl_list_hdr {
	33	u32 len;
	34	u8 reserved1[3];
	35	u8 version;
	36	u32 blk0_len;
	37	u8 pbt;
	38	u8 flags;
	39	u16 reserved2;
	40	} __attribute__((packed));
	41
	42	struct ipl_block_fcp {
	43	u8 reserved1[313-1];
	44	u8 opt;
	45	u8 reserved2[3];
	46	u16 reserved3;
	47	u16 devno;
	48	u8 reserved4[4];
	49	u64 wwpn;
	50	u64 lun;
	51	u32 bootprog;
	52	u8 reserved5[12];
	53	u64 br_lba;
	54	u32 scp_data_len;
	55	u8 reserved6[260];
	56	u8 scp_data[];
	57	} __attribute__((packed));
	58
a0443fbb	59	#define DIAG308_VMPARM_SIZE 64
684d2fd4 HB	60	#define DIAG308_SCPDATA_SIZE (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \
684d2fd4 HB	61	offsetof(struct ipl_block_fcp, scp_data)))
a0443fbb	62
46b05d26	63	struct ipl_block_ccw {
a0443fbb	64	u8 load_parm[8];
46b05d26 MH	65	u8 reserved1[84];
	66	u8 reserved2[2];
	67	u16 devno;
	68	u8 vm_flags;
	69	u8 reserved3[3];
	70	u32 vm_parm_len;
a0443fbb HB	71	u8 nss_name[8];
	72	u8 vm_parm[DIAG308_VMPARM_SIZE];
	73	u8 reserved4[8];
46b05d26 MH	74	} __attribute__((packed));
	75
	76	struct ipl_parameter_block {
	77	struct ipl_list_hdr hdr;
	78	union {
	79	struct ipl_block_fcp fcp;
	80	struct ipl_block_ccw ccw;
	81	} ipl_info;
a0443fbb	82	} __attribute__((packed,aligned(4096)));
46b05d26 MH	83
46b05d26 MH	84	/*
6fc321fd	85	* IPL validity flags
46b05d26 MH	86	*/
46b05d26 MH	87	extern u32 ipl_flags;
c5dd8586	88	extern u32 dump_prefix_page;
763968e2	89	extern unsigned int zfcpdump_prefix_array[];
411ed322	90
46b05d26	91	extern void do_reipl(void);
99ca4e58 MH	92	extern void do_halt(void);
99ca4e58 MH	93	extern void do_poff(void);
46b05d26	94	extern void ipl_save_parameters(void);
a0443fbb	95	extern void ipl_update_parameters(void);
684d2fd4 HB	96	extern size_t append_ipl_vmparm(char *, size_t);
684d2fd4 HB	97	extern size_t append_ipl_scpdata(char *, size_t);
46b05d26 MH	98
	99	enum {
	100	IPL_DEVNO_VALID = 1,
	101	IPL_PARMBLOCK_VALID = 2,
	102	IPL_NSS_VALID = 4,
	103	};
	104
411ed322 MH	105	enum ipl_type {
	106	IPL_TYPE_UNKNOWN = 1,
	107	IPL_TYPE_CCW = 2,
	108	IPL_TYPE_FCP = 4,
	109	IPL_TYPE_FCP_DUMP = 8,
	110	IPL_TYPE_NSS = 16,
	111	};
	112
	113	struct ipl_info
	114	{
	115	enum ipl_type type;
	116	union {
	117	struct {
	118	struct ccw_dev_id dev_id;
	119	} ccw;
	120	struct {
	121	struct ccw_dev_id dev_id;
	122	u64 wwpn;
	123	u64 lun;
	124	} fcp;
	125	struct {
	126	char name[NSS_NAME_SIZE + 1];
	127	} nss;
	128	} data;
	129	};
	130
	131	extern struct ipl_info ipl_info;
99ca4e58	132	extern void setup_ipl(void);
411ed322	133
46b05d26 MH	134	/*
	135	* DIAG 308 support
	136	*/
	137	enum diag308_subcode {
	138	DIAG308_REL_HSA = 2,
	139	DIAG308_IPL = 3,
	140	DIAG308_DUMP = 4,
	141	DIAG308_SET = 5,
	142	DIAG308_STORE = 6,
	143	};
	144
	145	enum diag308_ipl_type {
	146	DIAG308_IPL_TYPE_FCP = 0,
	147	DIAG308_IPL_TYPE_CCW = 2,
	148	};
	149
	150	enum diag308_opt {
	151	DIAG308_IPL_OPT_IPL = 0x10,
	152	DIAG308_IPL_OPT_DUMP = 0x20,
	153	};
	154
48657d22 MH	155	enum diag308_flags {
	156	DIAG308_FLAGS_LP_VALID = 0x80,
	157	};
	158
a0443fbb HB	159	enum diag308_vm_flags {
	160	DIAG308_VM_FLAGS_NSS_VALID = 0x80,
	161	DIAG308_VM_FLAGS_VP_VALID = 0x40,
	162	};
	163
46b05d26	164	enum diag308_rc {
3a95e8eb MH	165	DIAG308_RC_OK = 0x0001,
3a95e8eb MH	166	DIAG308_RC_NOCONFIG = 0x0102,
46b05d26 MH	167	};
	168
	169	extern int diag308(unsigned long subcode, void *addr);
	170
	171	#endif /* _ASM_S390_IPL_H */