| /* |
| * 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 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 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 *); |
| 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 */ |