465 lines
11 KiB
C
465 lines
11 KiB
C
/*
|
|
* File...........: linux/drivers/s390/block/dasd_eckd.h
|
|
* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
|
|
* Horst Hummel <Horst.Hummel@de.ibm.com>
|
|
* Bugreports.to..: <Linux390@de.ibm.com>
|
|
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
|
|
*
|
|
*/
|
|
|
|
#ifndef DASD_ECKD_H
|
|
#define DASD_ECKD_H
|
|
|
|
/*****************************************************************************
|
|
* SECTION: CCW Definitions
|
|
****************************************************************************/
|
|
#define DASD_ECKD_CCW_WRITE 0x05
|
|
#define DASD_ECKD_CCW_READ 0x06
|
|
#define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
|
|
#define DASD_ECKD_CCW_READ_HOME_ADDRESS 0x0a
|
|
#define DASD_ECKD_CCW_WRITE_KD 0x0d
|
|
#define DASD_ECKD_CCW_READ_KD 0x0e
|
|
#define DASD_ECKD_CCW_ERASE 0x11
|
|
#define DASD_ECKD_CCW_READ_COUNT 0x12
|
|
#define DASD_ECKD_CCW_SLCK 0x14
|
|
#define DASD_ECKD_CCW_WRITE_RECORD_ZERO 0x15
|
|
#define DASD_ECKD_CCW_READ_RECORD_ZERO 0x16
|
|
#define DASD_ECKD_CCW_WRITE_CKD 0x1d
|
|
#define DASD_ECKD_CCW_READ_CKD 0x1e
|
|
#define DASD_ECKD_CCW_PSF 0x27
|
|
#define DASD_ECKD_CCW_RSSD 0x3e
|
|
#define DASD_ECKD_CCW_LOCATE_RECORD 0x47
|
|
#define DASD_ECKD_CCW_SNSS 0x54
|
|
#define DASD_ECKD_CCW_DEFINE_EXTENT 0x63
|
|
#define DASD_ECKD_CCW_WRITE_MT 0x85
|
|
#define DASD_ECKD_CCW_READ_MT 0x86
|
|
#define DASD_ECKD_CCW_WRITE_KD_MT 0x8d
|
|
#define DASD_ECKD_CCW_READ_KD_MT 0x8e
|
|
#define DASD_ECKD_CCW_RELEASE 0x94
|
|
#define DASD_ECKD_CCW_READ_CKD_MT 0x9e
|
|
#define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
|
|
#define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5
|
|
#define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6
|
|
#define DASD_ECKD_CCW_RESERVE 0xB4
|
|
#define DASD_ECKD_CCW_PFX 0xE7
|
|
#define DASD_ECKD_CCW_PFX_READ 0xEA
|
|
#define DASD_ECKD_CCW_RSCK 0xF9
|
|
|
|
/*
|
|
* Perform Subsystem Function / Sub-Orders
|
|
*/
|
|
#define PSF_ORDER_PRSSD 0x18
|
|
#define PSF_ORDER_SSC 0x1D
|
|
|
|
/*
|
|
* Size that is reportet for large volumes in the old 16-bit no_cyl field
|
|
*/
|
|
#define LV_COMPAT_CYL 0xFFFE
|
|
|
|
/*****************************************************************************
|
|
* SECTION: Type Definitions
|
|
****************************************************************************/
|
|
|
|
struct eckd_count {
|
|
__u16 cyl;
|
|
__u16 head;
|
|
__u8 record;
|
|
__u8 kl;
|
|
__u16 dl;
|
|
} __attribute__ ((packed));
|
|
|
|
struct ch_t {
|
|
__u16 cyl;
|
|
__u16 head;
|
|
} __attribute__ ((packed));
|
|
|
|
struct chs_t {
|
|
__u16 cyl;
|
|
__u16 head;
|
|
__u32 sector;
|
|
} __attribute__ ((packed));
|
|
|
|
struct chr_t {
|
|
__u16 cyl;
|
|
__u16 head;
|
|
__u8 record;
|
|
} __attribute__ ((packed));
|
|
|
|
struct geom_t {
|
|
__u16 cyl;
|
|
__u16 head;
|
|
__u32 sector;
|
|
} __attribute__ ((packed));
|
|
|
|
struct eckd_home {
|
|
__u8 skip_control[14];
|
|
__u16 cell_number;
|
|
__u8 physical_addr[3];
|
|
__u8 flag;
|
|
struct ch_t track_addr;
|
|
__u8 reserved;
|
|
__u8 key_length;
|
|
__u8 reserved2[2];
|
|
} __attribute__ ((packed));
|
|
|
|
struct DE_eckd_data {
|
|
struct {
|
|
unsigned char perm:2; /* Permissions on this extent */
|
|
unsigned char reserved:1;
|
|
unsigned char seek:2; /* Seek control */
|
|
unsigned char auth:2; /* Access authorization */
|
|
unsigned char pci:1; /* PCI Fetch mode */
|
|
} __attribute__ ((packed)) mask;
|
|
struct {
|
|
unsigned char mode:2; /* Architecture mode */
|
|
unsigned char ckd:1; /* CKD Conversion */
|
|
unsigned char operation:3; /* Operation mode */
|
|
unsigned char cfw:1; /* Cache fast write */
|
|
unsigned char dfw:1; /* DASD fast write */
|
|
} __attribute__ ((packed)) attributes;
|
|
__u16 blk_size; /* Blocksize */
|
|
__u16 fast_write_id;
|
|
__u8 ga_additional; /* Global Attributes Additional */
|
|
__u8 ga_extended; /* Global Attributes Extended */
|
|
struct ch_t beg_ext;
|
|
struct ch_t end_ext;
|
|
unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
|
|
__u8 ep_format; /* Extended Parameter format byte */
|
|
__u8 ep_prio; /* Extended Parameter priority I/O byte */
|
|
__u8 ep_reserved1; /* Extended Parameter Reserved */
|
|
__u8 ep_rec_per_track; /* Number of records on a track */
|
|
__u8 ep_reserved[4]; /* Extended Parameter Reserved */
|
|
} __attribute__ ((packed));
|
|
|
|
struct LO_eckd_data {
|
|
struct {
|
|
unsigned char orientation:2;
|
|
unsigned char operation:6;
|
|
} __attribute__ ((packed)) operation;
|
|
struct {
|
|
unsigned char last_bytes_used:1;
|
|
unsigned char reserved:6;
|
|
unsigned char read_count_suffix:1;
|
|
} __attribute__ ((packed)) auxiliary;
|
|
__u8 unused;
|
|
__u8 count;
|
|
struct ch_t seek_addr;
|
|
struct chr_t search_arg;
|
|
__u8 sector;
|
|
__u16 length;
|
|
} __attribute__ ((packed));
|
|
|
|
struct LRE_eckd_data {
|
|
struct {
|
|
unsigned char orientation:2;
|
|
unsigned char operation:6;
|
|
} __attribute__ ((packed)) operation;
|
|
struct {
|
|
unsigned char length_valid:1;
|
|
unsigned char length_scope:1;
|
|
unsigned char imbedded_ccw_valid:1;
|
|
unsigned char check_bytes:2;
|
|
unsigned char imbedded_count_valid:1;
|
|
unsigned char reserved:1;
|
|
unsigned char read_count_suffix:1;
|
|
} __attribute__ ((packed)) auxiliary;
|
|
__u8 imbedded_ccw;
|
|
__u8 count;
|
|
struct ch_t seek_addr;
|
|
struct chr_t search_arg;
|
|
__u8 sector;
|
|
__u16 length;
|
|
__u8 imbedded_count;
|
|
__u8 extended_operation;
|
|
__u16 extended_parameter_length;
|
|
__u8 extended_parameter[0];
|
|
} __attribute__ ((packed));
|
|
|
|
/* Prefix data for format 0x00 and 0x01 */
|
|
struct PFX_eckd_data {
|
|
unsigned char format;
|
|
struct {
|
|
unsigned char define_extent:1;
|
|
unsigned char time_stamp:1;
|
|
unsigned char verify_base:1;
|
|
unsigned char hyper_pav:1;
|
|
unsigned char reserved:4;
|
|
} __attribute__ ((packed)) validity;
|
|
__u8 base_address;
|
|
__u8 aux;
|
|
__u8 base_lss;
|
|
__u8 reserved[7];
|
|
struct DE_eckd_data define_extent;
|
|
struct LRE_eckd_data locate_record;
|
|
} __attribute__ ((packed));
|
|
|
|
struct dasd_eckd_characteristics {
|
|
__u16 cu_type;
|
|
struct {
|
|
unsigned char support:2;
|
|
unsigned char async:1;
|
|
unsigned char reserved:1;
|
|
unsigned char cache_info:1;
|
|
unsigned char model:3;
|
|
} __attribute__ ((packed)) cu_model;
|
|
__u16 dev_type;
|
|
__u8 dev_model;
|
|
struct {
|
|
unsigned char mult_burst:1;
|
|
unsigned char RT_in_LR:1;
|
|
unsigned char reserved1:1;
|
|
unsigned char RD_IN_LR:1;
|
|
unsigned char reserved2:4;
|
|
unsigned char reserved3:8;
|
|
unsigned char defect_wr:1;
|
|
unsigned char XRC_supported:1;
|
|
unsigned char reserved4:1;
|
|
unsigned char striping:1;
|
|
unsigned char reserved5:4;
|
|
unsigned char cfw:1;
|
|
unsigned char reserved6:2;
|
|
unsigned char cache:1;
|
|
unsigned char dual_copy:1;
|
|
unsigned char dfw:1;
|
|
unsigned char reset_alleg:1;
|
|
unsigned char sense_down:1;
|
|
} __attribute__ ((packed)) facilities;
|
|
__u8 dev_class;
|
|
__u8 unit_type;
|
|
__u16 no_cyl;
|
|
__u16 trk_per_cyl;
|
|
__u8 sec_per_trk;
|
|
__u8 byte_per_track[3];
|
|
__u16 home_bytes;
|
|
__u8 formula;
|
|
union {
|
|
struct {
|
|
__u8 f1;
|
|
__u16 f2;
|
|
__u16 f3;
|
|
} __attribute__ ((packed)) f_0x01;
|
|
struct {
|
|
__u8 f1;
|
|
__u8 f2;
|
|
__u8 f3;
|
|
__u8 f4;
|
|
__u8 f5;
|
|
} __attribute__ ((packed)) f_0x02;
|
|
} __attribute__ ((packed)) factors;
|
|
__u16 first_alt_trk;
|
|
__u16 no_alt_trk;
|
|
__u16 first_dia_trk;
|
|
__u16 no_dia_trk;
|
|
__u16 first_sup_trk;
|
|
__u16 no_sup_trk;
|
|
__u8 MDR_ID;
|
|
__u8 OBR_ID;
|
|
__u8 director;
|
|
__u8 rd_trk_set;
|
|
__u16 max_rec_zero;
|
|
__u8 reserved1;
|
|
__u8 RWANY_in_LR;
|
|
__u8 factor6;
|
|
__u8 factor7;
|
|
__u8 factor8;
|
|
__u8 reserved2[3];
|
|
__u8 reserved3[6];
|
|
__u32 long_no_cyl;
|
|
} __attribute__ ((packed));
|
|
|
|
/* elements of the configuration data */
|
|
struct dasd_ned {
|
|
struct {
|
|
__u8 identifier:2;
|
|
__u8 token_id:1;
|
|
__u8 sno_valid:1;
|
|
__u8 subst_sno:1;
|
|
__u8 recNED:1;
|
|
__u8 emuNED:1;
|
|
__u8 reserved:1;
|
|
} __attribute__ ((packed)) flags;
|
|
__u8 descriptor;
|
|
__u8 dev_class;
|
|
__u8 reserved;
|
|
__u8 dev_type[6];
|
|
__u8 dev_model[3];
|
|
__u8 HDA_manufacturer[3];
|
|
__u8 HDA_location[2];
|
|
__u8 HDA_seqno[12];
|
|
__u8 ID;
|
|
__u8 unit_addr;
|
|
} __attribute__ ((packed));
|
|
|
|
struct dasd_sneq {
|
|
struct {
|
|
__u8 identifier:2;
|
|
__u8 reserved:6;
|
|
} __attribute__ ((packed)) flags;
|
|
__u8 res1;
|
|
__u16 format;
|
|
__u8 res2[4]; /* byte 4- 7 */
|
|
__u8 sua_flags; /* byte 8 */
|
|
__u8 base_unit_addr; /* byte 9 */
|
|
__u8 res3[22]; /* byte 10-31 */
|
|
} __attribute__ ((packed));
|
|
|
|
struct vd_sneq {
|
|
struct {
|
|
__u8 identifier:2;
|
|
__u8 reserved:6;
|
|
} __attribute__ ((packed)) flags;
|
|
__u8 res1;
|
|
__u16 format;
|
|
__u8 res2[4]; /* byte 4- 7 */
|
|
__u8 uit[16]; /* byte 8-23 */
|
|
__u8 res3[8]; /* byte 24-31 */
|
|
} __attribute__ ((packed));
|
|
|
|
struct dasd_gneq {
|
|
struct {
|
|
__u8 identifier:2;
|
|
__u8 reserved:6;
|
|
} __attribute__ ((packed)) flags;
|
|
__u8 reserved[7];
|
|
__u16 subsystemID;
|
|
__u8 reserved2[22];
|
|
} __attribute__ ((packed));
|
|
|
|
struct dasd_eckd_path {
|
|
__u8 opm;
|
|
__u8 ppm;
|
|
__u8 npm;
|
|
};
|
|
|
|
struct dasd_rssd_features {
|
|
char feature[256];
|
|
} __attribute__((packed));
|
|
|
|
|
|
/*
|
|
* Perform Subsystem Function - Prepare for Read Subsystem Data
|
|
*/
|
|
struct dasd_psf_prssd_data {
|
|
unsigned char order;
|
|
unsigned char flags;
|
|
unsigned char reserved[4];
|
|
unsigned char suborder;
|
|
unsigned char varies[5];
|
|
} __attribute__ ((packed));
|
|
|
|
/*
|
|
* Perform Subsystem Function - Set Subsystem Characteristics
|
|
*/
|
|
struct dasd_psf_ssc_data {
|
|
unsigned char order;
|
|
unsigned char flags;
|
|
unsigned char cu_type[4];
|
|
unsigned char suborder;
|
|
unsigned char reserved[59];
|
|
} __attribute__((packed));
|
|
|
|
|
|
/*
|
|
* some structures and definitions for alias handling
|
|
*/
|
|
struct dasd_unit_address_configuration {
|
|
struct {
|
|
char ua_type;
|
|
char base_ua;
|
|
} unit[256];
|
|
} __attribute__((packed));
|
|
|
|
|
|
#define MAX_DEVICES_PER_LCU 256
|
|
|
|
/* flags on the LCU */
|
|
#define NEED_UAC_UPDATE 0x01
|
|
#define UPDATE_PENDING 0x02
|
|
|
|
enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
|
|
|
|
|
|
struct alias_root {
|
|
struct list_head serverlist;
|
|
spinlock_t lock;
|
|
};
|
|
|
|
struct alias_server {
|
|
struct list_head server;
|
|
struct dasd_uid uid;
|
|
struct list_head lculist;
|
|
};
|
|
|
|
struct summary_unit_check_work_data {
|
|
char reason;
|
|
struct dasd_device *device;
|
|
struct work_struct worker;
|
|
};
|
|
|
|
struct read_uac_work_data {
|
|
struct dasd_device *device;
|
|
struct delayed_work dwork;
|
|
};
|
|
|
|
struct alias_lcu {
|
|
struct list_head lcu;
|
|
struct dasd_uid uid;
|
|
enum pavtype pav;
|
|
char flags;
|
|
spinlock_t lock;
|
|
struct list_head grouplist;
|
|
struct list_head active_devices;
|
|
struct list_head inactive_devices;
|
|
struct dasd_unit_address_configuration *uac;
|
|
struct summary_unit_check_work_data suc_data;
|
|
struct read_uac_work_data ruac_data;
|
|
struct dasd_ccw_req *rsu_cqr;
|
|
};
|
|
|
|
struct alias_pav_group {
|
|
struct list_head group;
|
|
struct dasd_uid uid;
|
|
struct alias_lcu *lcu;
|
|
struct list_head baselist;
|
|
struct list_head aliaslist;
|
|
struct dasd_device *next;
|
|
};
|
|
|
|
|
|
struct dasd_eckd_private {
|
|
struct dasd_eckd_characteristics rdc_data;
|
|
u8 *conf_data;
|
|
int conf_len;
|
|
/* pointers to specific parts in the conf_data */
|
|
struct dasd_ned *ned;
|
|
struct dasd_sneq *sneq;
|
|
struct vd_sneq *vdsneq;
|
|
struct dasd_gneq *gneq;
|
|
|
|
struct dasd_eckd_path path_data;
|
|
struct eckd_count count_area[5];
|
|
int init_cqr_status;
|
|
int uses_cdl;
|
|
struct attrib_data_t attrib; /* e.g. cache operations */
|
|
struct dasd_rssd_features features;
|
|
u32 real_cyl;
|
|
|
|
/* alias managemnet */
|
|
struct dasd_uid uid;
|
|
struct alias_pav_group *pavgroup;
|
|
struct alias_lcu *lcu;
|
|
int count;
|
|
};
|
|
|
|
|
|
|
|
int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
|
|
void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
|
|
int dasd_alias_add_device(struct dasd_device *);
|
|
int dasd_alias_remove_device(struct dasd_device *);
|
|
struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
|
|
void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
|
|
void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
|
|
|
|
#endif /* DASD_ECKD_H */
|