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/* * 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_SNID 0x34 #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_WRITE_FULL_TRACK 0x95 #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_READ_TRACK 0xDE #define DASD_ECKD_CCW_PFX 0xE7 #define DASD_ECKD_CCW_PFX_READ 0xEA #define DASD_ECKD_CCW_RSCK 0xF9 #define DASD_ECKD_CCW_RCD 0xFA /* * 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 #define FCX_MAX_DATA_FACTOR 65536 #define DASD_ECKD_RCD_DATA_SIZE 256 /***************************************************************************** * 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[5]; struct { __u8 value:2; __u8 number:6; } __attribute__ ((packed)) timeout; __u8 reserved3; __u16 subsystemID; __u8 reserved2[22]; } __attribute__ ((packed)); 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 completion lcu_setup; }; 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 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; u32 fcx_max_data; }; 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 *); void dasd_alias_lcu_setup_complete(struct dasd_device *); void dasd_alias_wait_for_lcu_setup(struct dasd_device *); int dasd_alias_update_add_device(struct dasd_device *); #endif /* DASD_ECKD_H */