| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* | |
| * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> | |
| * Horst Hummel <Horst.Hummel@de.ibm.com> | |
| * Bugreports.to..: <Linux390@de.ibm.com> | |
| * Copyright IBM Corp. 1999, 2000 | |
| * | |
| */ | |
| #ifndef DASD_ECKD_H | |
| #define DASD_ECKD_H | |
| /***************************************************************************** | |
| * SECTION: CCW Definitions | |
| ****************************************************************************/ | |
| #define DASD_ECKD_CCW_NOP 0x03 | |
| #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_LOCATE_RECORD_EXT 0x4b | |
| #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_READ_COUNT_MT 0x92 | |
| #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 | |
| #define DASD_ECKD_CCW_DSO 0xF7 | |
| /* Define Subsystem Function / Orders */ | |
| #define DSO_ORDER_RAS 0x81 | |
| /* | |
| * Perform Subsystem Function / Orders | |
| */ | |
| #define PSF_ORDER_PRSSD 0x18 | |
| #define PSF_ORDER_CUIR_RESPONSE 0x1A | |
| #define PSF_ORDER_SSC 0x1D | |
| /* | |
| * Perform Subsystem Function / Sub-Orders | |
| */ | |
| #define PSF_SUBORDER_QHA 0x1C /* Query Host Access */ | |
| #define PSF_SUBORDER_PPRCEQ 0x50 /* PPRC Extended Query */ | |
| #define PSF_SUBORDER_VSQ 0x52 /* Volume Storage Query */ | |
| #define PSF_SUBORDER_LCQ 0x53 /* Logical Configuration Query */ | |
| /* | |
| * PPRC Extended Query Scopes | |
| */ | |
| #define PPRCEQ_SCOPE_4 0x04 /* Scope 4 for PPRC Extended Query */ | |
| /* | |
| * CUIR response condition codes | |
| */ | |
| #define PSF_CUIR_INVALID 0x00 | |
| #define PSF_CUIR_COMPLETED 0x01 | |
| #define PSF_CUIR_NOT_SUPPORTED 0x02 | |
| #define PSF_CUIR_ERROR_IN_REQ 0x03 | |
| #define PSF_CUIR_DENIED 0x04 | |
| #define PSF_CUIR_LAST_PATH 0x05 | |
| #define PSF_CUIR_DEVICE_ONLINE 0x06 | |
| #define PSF_CUIR_VARY_FAILURE 0x07 | |
| #define PSF_CUIR_SOFTWARE_FAILURE 0x08 | |
| #define PSF_CUIR_NOT_RECOGNIZED 0x09 | |
| /* | |
| * CUIR codes | |
| */ | |
| #define CUIR_QUIESCE 0x01 | |
| #define CUIR_RESUME 0x02 | |
| /* | |
| * Out-of-space (OOS) Codes | |
| */ | |
| #define REPO_WARN 0x01 | |
| #define REPO_EXHAUST 0x02 | |
| #define POOL_WARN 0x03 | |
| #define POOL_EXHAUST 0x04 | |
| #define REPO_RELIEVE 0x05 | |
| #define POOL_RELIEVE 0x06 | |
| /* | |
| * attention message definitions | |
| */ | |
| #define ATTENTION_LENGTH_CUIR 0x0e | |
| #define ATTENTION_FORMAT_CUIR 0x01 | |
| #define ATTENTION_LENGTH_OOS 0x10 | |
| #define ATTENTION_FORMAT_OOS 0x06 | |
| #define DASD_ECKD_PG_GROUPED 0x10 | |
| /* | |
| * Size that is reported 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 | |
| #define DASD_ECKD_PATH_THRHLD 256 | |
| #define DASD_ECKD_PATH_INTERVAL 300 | |
| /* | |
| * Maximum number of blocks to be chained | |
| */ | |
| #define DASD_ECKD_MAX_BLOCKS 180 | |
| #define DASD_ECKD_MAX_BLOCKS_RAW 256 | |
| /***************************************************************************** | |
| * SECTION: Type Definitions | |
| ****************************************************************************/ | |
| struct eckd_count { | |
| __u16 cyl; | |
| __u16 head; | |
| __u8 record; | |
| __u8 kl; | |
| __u16 dl; | |
| } __attribute__ ((packed)); | |
| struct eckd_r0 { | |
| struct eckd_count count; | |
| __u8 data[8]; | |
| } __packed; | |
| /* | |
| * Extended Address Volume track address: the head field carries the actual | |
| * head in its low-order 4 bits; the cylinder bits that do not fit the 16-bit | |
| * cyl field are shifted in just above them. | |
| */ | |
| #define DASD_EAV_CYL_HI_SHIFT 16 /* cylinder bits beyond the 16-bit cyl field */ | |
| #define DASD_EAV_HEAD_HI_SHIFT 4 /* head occupies the low-order 4 bits of head */ | |
| /* | |
| * On-disk DASD format label. | |
| * | |
| * Written into track 0, head 0, record 4 (R4 - the first non-special CDL | |
| * record) as part of the same channel program that formats track 0, so it is | |
| * stored atomically with the track: either both the track format and the label | |
| * make it to disk or neither does. Its presence with a valid magic therefore | |
| * marks a completed format and can be used for format detection. | |
| * | |
| * The structure is exactly the smallest supported block size (512 bytes) so it | |
| * always fits into a single record. | |
| * For larger block sizes the rest of the record is zero padded. | |
| * The magic together with the version is used to recognise a valid label. | |
| */ | |
| #define DASD_ESE_LABEL_MAGIC 0xC4C1E2C4C6D4E3F1ULL /* EBCDIC "DASDFMT1" */ | |
| #define DASD_ESE_LABEL_VERSION 1 | |
| /* dasd_format_label.flags */ | |
| #define DASD_ESE_LABEL_F_ESE 0x00000001 /* volume is extent space efficient */ | |
| #define DASD_ESE_LABEL_F_QUICK 0x00000002 /* quick (space released) format */ | |
| #define DASD_ESE_LABEL_F_FULL 0x00000004 /* full format */ | |
| struct dasd_format_label { | |
| __u64 magic; /* DASD_ESE_LABEL_MAGIC */ | |
| __u32 version; /* DASD_ESE_LABEL_VERSION */ | |
| __u32 flags; /* DASD_ESE_LABEL_F_* */ | |
| __u32 blksize; /* block size the volume was formatted with */ | |
| __u32 reserved0; | |
| __u64 format_tod; /* TOD clock at format time */ | |
| __u8 kernel_version[64]; /* NUL terminated kernel release (uname -r) */ | |
| __u8 reserved[416]; /* pad the struct to 512 bytes */ | |
| } __packed; | |
| struct ch_t { | |
| __u16 cyl; | |
| __u16 head; | |
| } __attribute__ ((packed)); | |
| struct chr_t { | |
| __u16 cyl; | |
| __u16 head; | |
| __u8 record; | |
| } __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 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[]; | |
| } __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 PPRC_enabled: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]; | |
| struct { | |
| __u8 HDA_location[2]; | |
| __u8 HDA_seqno[12]; | |
| } serial; | |
| __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 record_selector; | |
| __u8 reserved[4]; | |
| 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)); | |
| struct dasd_rssd_messages { | |
| __u16 length; | |
| __u8 format; | |
| __u8 code; | |
| __u32 message_id; | |
| __u8 flags; | |
| char messages[4087]; | |
| } __packed; | |
| /* | |
| * Read Subsystem Data - Volume Storage Query | |
| */ | |
| struct dasd_rssd_vsq { | |
| struct { | |
| __u8 tse:1; | |
| __u8 space_not_available:1; | |
| __u8 ese:1; | |
| __u8 unused:5; | |
| } __packed vol_info; | |
| __u8 unused1; | |
| __u16 extent_pool_id; | |
| __u8 warn_cap_limit; | |
| __u8 warn_cap_guaranteed; | |
| __u16 unused2; | |
| __u32 limit_capacity; | |
| __u32 guaranteed_capacity; | |
| __u32 space_allocated; | |
| __u32 space_configured; | |
| __u32 logical_capacity; | |
| } __packed; | |
| /* | |
| * Extent Pool Summary | |
| */ | |
| struct dasd_ext_pool_sum { | |
| __u16 pool_id; | |
| __u8 repo_warn_thrshld; | |
| __u8 warn_thrshld; | |
| struct { | |
| __u8 type:1; /* 0 - CKD / 1 - FB */ | |
| __u8 track_space_efficient:1; | |
| __u8 extent_space_efficient:1; | |
| __u8 standard_volume:1; | |
| __u8 extent_size_valid:1; | |
| __u8 capacity_at_warnlevel:1; | |
| __u8 pool_oos:1; | |
| __u8 unused0:1; | |
| __u8 unused1; | |
| } __packed flags; | |
| struct { | |
| __u8 reserved0:1; | |
| __u8 size_1G:1; | |
| __u8 reserved1:5; | |
| __u8 size_16M:1; | |
| } __packed extent_size; | |
| __u8 unused; | |
| } __packed; | |
| /* | |
| * Read Subsystem Data-Response - Logical Configuration Query - Header | |
| */ | |
| struct dasd_rssd_lcq { | |
| __u16 data_length; /* Length of data returned */ | |
| __u16 pool_count; /* Count of extent pools returned - Max: 448 */ | |
| struct { | |
| __u8 pool_info_valid:1; /* Detailed Information valid */ | |
| __u8 pool_id_volume:1; | |
| __u8 pool_id_cec:1; | |
| __u8 unused0:5; | |
| __u8 unused1; | |
| } __packed header_flags; | |
| char sfi_type[6]; /* Storage Facility Image Type (EBCDIC) */ | |
| char sfi_model[3]; /* Storage Facility Image Model (EBCDIC) */ | |
| __u8 sfi_seq_num[10]; /* Storage Facility Image Sequence Number */ | |
| __u8 reserved[7]; | |
| struct dasd_ext_pool_sum ext_pool_sum[448]; | |
| } __packed; | |
| struct dasd_oos_message { | |
| __u16 length; | |
| __u8 format; | |
| __u8 code; | |
| __u8 percentage_empty; | |
| __u8 reserved; | |
| __u16 ext_pool_id; | |
| __u16 token; | |
| __u8 unused[6]; | |
| } __packed; | |
| struct dasd_cuir_message { | |
| __u16 length; | |
| __u8 format; | |
| __u8 code; | |
| __u32 message_id; | |
| __u8 flags; | |
| __u8 neq_map[3]; | |
| __u8 ned_map; | |
| __u8 record_selector; | |
| } __packed; | |
| struct dasd_psf_cuir_response { | |
| __u8 order; | |
| __u8 flags; | |
| __u8 cc; | |
| __u8 chpid; | |
| __u16 device_nr; | |
| __u16 reserved; | |
| __u32 message_id; | |
| __u64 system_id; | |
| __u8 cssid; | |
| __u8 ssid; | |
| } __packed; | |
| struct dasd_ckd_path_group_entry { | |
| __u8 status_flags; | |
| __u8 pgid[11]; | |
| __u8 sysplex_name[8]; | |
| __u32 timestamp; | |
| __u32 cylinder; | |
| __u8 reserved[4]; | |
| } __packed; | |
| struct dasd_ckd_host_information { | |
| __u8 access_flags; | |
| __u8 entry_size; | |
| __u16 entry_count; | |
| __u8 entry[16390]; | |
| } __packed; | |
| struct dasd_psf_query_host_access { | |
| __u8 access_flag; | |
| __u8 version; | |
| __u16 CKD_length; | |
| __u16 SCSI_length; | |
| __u8 unused[10]; | |
| __u8 host_access_information[16394]; | |
| } __packed; | |
| /* | |
| * Perform Subsystem Function - Prepare for Read Subsystem Data | |
| */ | |
| struct dasd_psf_prssd_data { | |
| unsigned char order; | |
| unsigned char flags; | |
| unsigned char reserved1; | |
| unsigned char reserved2; | |
| unsigned char lss; | |
| unsigned char volume; | |
| 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)); | |
| /* Maximum number of extents for a single Release Allocated Space command */ | |
| #define DASD_ECKD_RAS_EXTS_MAX 110U | |
| struct dasd_dso_ras_ext_range { | |
| struct ch_t beg_ext; | |
| struct ch_t end_ext; | |
| } __packed; | |
| /* | |
| * Define Subsystem Operation - Release Allocated Space | |
| */ | |
| struct dasd_dso_ras_data { | |
| __u8 order; | |
| struct { | |
| __u8 message:1; /* Must be zero */ | |
| __u8 reserved1:2; | |
| __u8 vol_type:1; /* 0 - CKD/FBA, 1 - FB */ | |
| __u8 reserved2:4; | |
| } __packed flags; | |
| /* Operation Flags to specify scope */ | |
| struct { | |
| __u8 reserved1:2; | |
| /* Release Space by Extent */ | |
| __u8 by_extent:1; /* 0 - entire volume, 1 - specified extents */ | |
| __u8 guarantee_init:1; | |
| __u8 force_release:1; /* Internal - will be ignored */ | |
| __u16 reserved2:11; | |
| } __packed op_flags; | |
| __u8 lss; | |
| __u8 dev_addr; | |
| __u32 reserved1; | |
| __u8 reserved2[10]; | |
| __u16 nr_exts; /* Defines number of ext_scope - max 110 */ | |
| __u16 reserved3; | |
| } __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_conf_data { | |
| struct dasd_ned neds[5]; | |
| u8 reserved[64]; | |
| struct dasd_gneq gneq; | |
| } __packed; | |
| struct dasd_conf { | |
| u8 *data; | |
| int 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_private { | |
| struct dasd_eckd_characteristics rdc_data; | |
| struct dasd_conf conf; | |
| 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; | |
| struct dasd_rssd_vsq vsq; | |
| struct dasd_ext_pool_sum eps; | |
| u32 real_cyl; | |
| /* alias management */ | |
| struct dasd_uid uid; | |
| /* | |
| * Cached copies of conf.ned->ID (the LSS) and conf.ned->unit_addr, | |
| * refreshed under ccwdev_lock. Kept outside uid because create_uid() | |
| * memsets uid before repopulating it, which would expose a transient | |
| * zero to the lockless CCW-build readers. | |
| */ | |
| __u8 ned_lss; | |
| __u8 ned_ua; | |
| struct alias_pav_group *pavgroup; | |
| struct alias_lcu *lcu; | |
| int count; | |
| u32 fcx_max_data; | |
| char suc_reason; | |
| /* | |
| * Set when the whole volume's space was released (full RAS); consumed by | |
| * the next format to mark the on-disk label as a quick (vs full) format. | |
| */ | |
| int ese_format_quick; | |
| /* | |
| * Cached on-disk format label (R4), read at online and refreshed on | |
| * format. When valid, is_ese() is derived from it; otherwise it falls | |
| * back to the hardware ESE field (vsq.vol_info.ese). | |
| */ | |
| struct dasd_format_label ese_label; | |
| bool ese_label_valid; | |
| }; | |
| 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 work_struct *); | |
| void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *); | |
| int dasd_alias_update_add_device(struct dasd_device *); | |
| #endif /* DASD_ECKD_H */ |