From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/s390/block/dasd_eckd.h | 711 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 711 insertions(+) create mode 100644 drivers/s390/block/dasd_eckd.h (limited to 'drivers/s390/block/dasd_eckd.h') diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h new file mode 100644 index 000000000..f9299bd18 --- /dev/null +++ b/drivers/s390/block/dasd_eckd.h @@ -0,0 +1,711 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Author(s)......: Holger Smolinski + * Horst Hummel + * Bugreports.to..: + * 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 190 +#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 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; + struct alias_pav_group *pavgroup; + struct alias_lcu *lcu; + int count; + + u32 fcx_max_data; + char suc_reason; +}; + + + +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 */ -- cgit v1.2.3