492 lines
12 KiB
C
492 lines
12 KiB
C
/*
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* File...........: linux/drivers/s390/block/dasd_eckd.h
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* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
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* Horst Hummel <Horst.Hummel@de.ibm.com>
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* Bugreports.to..: <Linux390@de.ibm.com>
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* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
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*
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*/
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#ifndef DASD_ECKD_H
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#define DASD_ECKD_H
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/*****************************************************************************
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* SECTION: CCW Definitions
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****************************************************************************/
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#define DASD_ECKD_CCW_WRITE 0x05
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#define DASD_ECKD_CCW_READ 0x06
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#define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
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#define DASD_ECKD_CCW_READ_HOME_ADDRESS 0x0a
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#define DASD_ECKD_CCW_WRITE_KD 0x0d
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#define DASD_ECKD_CCW_READ_KD 0x0e
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#define DASD_ECKD_CCW_ERASE 0x11
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#define DASD_ECKD_CCW_READ_COUNT 0x12
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#define DASD_ECKD_CCW_SLCK 0x14
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#define DASD_ECKD_CCW_WRITE_RECORD_ZERO 0x15
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#define DASD_ECKD_CCW_READ_RECORD_ZERO 0x16
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#define DASD_ECKD_CCW_WRITE_CKD 0x1d
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#define DASD_ECKD_CCW_READ_CKD 0x1e
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#define DASD_ECKD_CCW_PSF 0x27
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#define DASD_ECKD_CCW_RSSD 0x3e
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#define DASD_ECKD_CCW_LOCATE_RECORD 0x47
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#define DASD_ECKD_CCW_SNSS 0x54
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#define DASD_ECKD_CCW_DEFINE_EXTENT 0x63
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#define DASD_ECKD_CCW_WRITE_MT 0x85
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#define DASD_ECKD_CCW_READ_MT 0x86
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#define DASD_ECKD_CCW_WRITE_KD_MT 0x8d
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#define DASD_ECKD_CCW_READ_KD_MT 0x8e
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#define DASD_ECKD_CCW_RELEASE 0x94
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#define DASD_ECKD_CCW_READ_CKD_MT 0x9e
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#define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
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#define DASD_ECKD_CCW_RESERVE 0xB4
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#define DASD_ECKD_CCW_PFX 0xE7
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#define DASD_ECKD_CCW_RSCK 0xF9
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/*
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* Perform Subsystem Function / Sub-Orders
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*/
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#define PSF_ORDER_PRSSD 0x18
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#define PSF_ORDER_SSC 0x1D
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/*****************************************************************************
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* SECTION: Type Definitions
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****************************************************************************/
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struct eckd_count {
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__u16 cyl;
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__u16 head;
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__u8 record;
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__u8 kl;
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__u16 dl;
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} __attribute__ ((packed));
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struct ch_t {
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__u16 cyl;
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__u16 head;
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} __attribute__ ((packed));
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struct chs_t {
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__u16 cyl;
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__u16 head;
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__u32 sector;
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} __attribute__ ((packed));
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struct chr_t {
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__u16 cyl;
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__u16 head;
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__u8 record;
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} __attribute__ ((packed));
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struct geom_t {
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__u16 cyl;
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__u16 head;
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__u32 sector;
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} __attribute__ ((packed));
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struct eckd_home {
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__u8 skip_control[14];
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__u16 cell_number;
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__u8 physical_addr[3];
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__u8 flag;
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struct ch_t track_addr;
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__u8 reserved;
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__u8 key_length;
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__u8 reserved2[2];
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} __attribute__ ((packed));
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struct DE_eckd_data {
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struct {
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unsigned char perm:2; /* Permissions on this extent */
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unsigned char reserved:1;
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unsigned char seek:2; /* Seek control */
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unsigned char auth:2; /* Access authorization */
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unsigned char pci:1; /* PCI Fetch mode */
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} __attribute__ ((packed)) mask;
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struct {
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unsigned char mode:2; /* Architecture mode */
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unsigned char ckd:1; /* CKD Conversion */
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unsigned char operation:3; /* Operation mode */
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unsigned char cfw:1; /* Cache fast write */
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unsigned char dfw:1; /* DASD fast write */
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} __attribute__ ((packed)) attributes;
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__u16 blk_size; /* Blocksize */
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__u16 fast_write_id;
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__u8 ga_additional; /* Global Attributes Additional */
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__u8 ga_extended; /* Global Attributes Extended */
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struct ch_t beg_ext;
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struct ch_t end_ext;
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unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
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__u8 ep_format; /* Extended Parameter format byte */
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__u8 ep_prio; /* Extended Parameter priority I/O byte */
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__u8 ep_reserved[6]; /* Extended Parameter Reserved */
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} __attribute__ ((packed));
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struct LO_eckd_data {
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struct {
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unsigned char orientation:2;
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unsigned char operation:6;
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} __attribute__ ((packed)) operation;
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struct {
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unsigned char last_bytes_used:1;
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unsigned char reserved:6;
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unsigned char read_count_suffix:1;
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} __attribute__ ((packed)) auxiliary;
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__u8 unused;
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__u8 count;
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struct ch_t seek_addr;
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struct chr_t search_arg;
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__u8 sector;
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__u16 length;
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} __attribute__ ((packed));
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/* Prefix data for format 0x00 and 0x01 */
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struct PFX_eckd_data {
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unsigned char format;
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struct {
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unsigned char define_extend:1;
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unsigned char time_stamp:1;
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unsigned char verify_base:1;
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unsigned char hyper_pav:1;
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unsigned char reserved:4;
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} __attribute__ ((packed)) validity;
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__u8 base_address;
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__u8 aux;
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__u8 base_lss;
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__u8 reserved[7];
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struct DE_eckd_data define_extend;
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struct LO_eckd_data locate_record;
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__u8 LO_extended_data[4];
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} __attribute__ ((packed));
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struct dasd_eckd_characteristics {
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__u16 cu_type;
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struct {
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unsigned char support:2;
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unsigned char async:1;
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unsigned char reserved:1;
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unsigned char cache_info:1;
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unsigned char model:3;
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} __attribute__ ((packed)) cu_model;
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__u16 dev_type;
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__u8 dev_model;
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struct {
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unsigned char mult_burst:1;
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unsigned char RT_in_LR:1;
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unsigned char reserved1:1;
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unsigned char RD_IN_LR:1;
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unsigned char reserved2:4;
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unsigned char reserved3:8;
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unsigned char defect_wr:1;
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unsigned char XRC_supported:1;
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unsigned char reserved4:1;
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unsigned char striping:1;
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unsigned char reserved5:4;
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unsigned char cfw:1;
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unsigned char reserved6:2;
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unsigned char cache:1;
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unsigned char dual_copy:1;
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unsigned char dfw:1;
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unsigned char reset_alleg:1;
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unsigned char sense_down:1;
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} __attribute__ ((packed)) facilities;
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__u8 dev_class;
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__u8 unit_type;
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__u16 no_cyl;
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__u16 trk_per_cyl;
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__u8 sec_per_trk;
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__u8 byte_per_track[3];
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__u16 home_bytes;
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__u8 formula;
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union {
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struct {
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__u8 f1;
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__u16 f2;
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__u16 f3;
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} __attribute__ ((packed)) f_0x01;
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struct {
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__u8 f1;
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__u8 f2;
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__u8 f3;
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__u8 f4;
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__u8 f5;
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} __attribute__ ((packed)) f_0x02;
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} __attribute__ ((packed)) factors;
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__u16 first_alt_trk;
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__u16 no_alt_trk;
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__u16 first_dia_trk;
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__u16 no_dia_trk;
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__u16 first_sup_trk;
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__u16 no_sup_trk;
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__u8 MDR_ID;
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__u8 OBR_ID;
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__u8 director;
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__u8 rd_trk_set;
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__u16 max_rec_zero;
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__u8 reserved1;
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__u8 RWANY_in_LR;
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__u8 factor6;
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__u8 factor7;
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__u8 factor8;
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__u8 reserved2[3];
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__u8 reserved3[10];
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} __attribute__ ((packed));
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struct dasd_eckd_confdata {
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struct {
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struct {
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unsigned char identifier:2;
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unsigned char token_id:1;
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unsigned char sno_valid:1;
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unsigned char subst_sno:1;
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unsigned char recNED:1;
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unsigned char emuNED:1;
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unsigned char reserved:1;
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} __attribute__ ((packed)) flags;
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__u8 descriptor;
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__u8 dev_class;
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__u8 reserved;
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unsigned char dev_type[6];
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unsigned char dev_model[3];
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unsigned char HDA_manufacturer[3];
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unsigned char HDA_location[2];
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unsigned char HDA_seqno[12];
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__u8 ID;
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__u8 unit_addr;
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} __attribute__ ((packed)) ned1;
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union {
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struct {
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struct {
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unsigned char identifier:2;
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unsigned char token_id:1;
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unsigned char sno_valid:1;
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unsigned char subst_sno:1;
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unsigned char recNED:1;
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unsigned char emuNED:1;
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unsigned char reserved:1;
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} __attribute__ ((packed)) flags;
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__u8 descriptor;
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__u8 reserved[2];
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unsigned char dev_type[6];
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unsigned char dev_model[3];
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unsigned char DASD_manufacturer[3];
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unsigned char DASD_location[2];
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unsigned char DASD_seqno[12];
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__u16 ID;
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} __attribute__ ((packed)) ned;
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struct {
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unsigned char flags; /* byte 0 */
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unsigned char res1; /* byte 1 */
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__u16 format; /* byte 2-3 */
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unsigned char res2[4]; /* byte 4-7 */
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unsigned char sua_flags; /* byte 8 */
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__u8 base_unit_addr; /* byte 9 */
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unsigned char res3[22]; /* byte 10-31 */
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} __attribute__ ((packed)) sneq;
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} __attribute__ ((packed)) ned2;
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struct {
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struct {
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unsigned char identifier:2;
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unsigned char token_id:1;
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unsigned char sno_valid:1;
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unsigned char subst_sno:1;
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unsigned char recNED:1;
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unsigned char emuNED:1;
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unsigned char reserved:1;
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} __attribute__ ((packed)) flags;
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__u8 descriptor;
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__u8 reserved[2];
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unsigned char cont_type[6];
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unsigned char cont_model[3];
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unsigned char cont_manufacturer[3];
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unsigned char cont_location[2];
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unsigned char cont_seqno[12];
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__u16 ID;
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} __attribute__ ((packed)) ned3;
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struct {
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struct {
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unsigned char identifier:2;
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unsigned char token_id:1;
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unsigned char sno_valid:1;
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unsigned char subst_sno:1;
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unsigned char recNED:1;
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unsigned char emuNED:1;
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unsigned char reserved:1;
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} __attribute__ ((packed)) flags;
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__u8 descriptor;
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__u8 reserved[2];
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unsigned char cont_type[6];
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unsigned char empty[3];
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unsigned char cont_manufacturer[3];
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unsigned char cont_location[2];
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unsigned char cont_seqno[12];
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__u16 ID;
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} __attribute__ ((packed)) ned4;
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unsigned char ned5[32];
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unsigned char ned6[32];
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unsigned char ned7[32];
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struct {
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struct {
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unsigned char identifier:2;
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unsigned char reserved:6;
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} __attribute__ ((packed)) flags;
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__u8 selector;
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__u16 interfaceID;
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__u32 reserved;
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__u16 subsystemID;
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struct {
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unsigned char sp0:1;
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unsigned char sp1:1;
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unsigned char reserved:5;
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unsigned char scluster:1;
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} __attribute__ ((packed)) spathID;
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__u8 unit_address;
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__u8 dev_ID;
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__u8 dev_address;
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__u8 adapterID;
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__u16 link_address;
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struct {
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unsigned char parallel:1;
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unsigned char escon:1;
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unsigned char reserved:1;
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unsigned char ficon:1;
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unsigned char reserved2:4;
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} __attribute__ ((packed)) protocol_type;
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struct {
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unsigned char PID_in_236:1;
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unsigned char reserved:7;
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} __attribute__ ((packed)) format_flags;
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__u8 log_dev_address;
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unsigned char reserved2[12];
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} __attribute__ ((packed)) neq;
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} __attribute__ ((packed));
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struct dasd_eckd_path {
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__u8 opm;
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__u8 ppm;
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__u8 npm;
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};
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struct dasd_rssd_features {
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char feature[256];
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} __attribute__((packed));
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/*
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* Perform Subsystem Function - Prepare for Read Subsystem Data
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*/
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struct dasd_psf_prssd_data {
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unsigned char order;
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unsigned char flags;
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unsigned char reserved[4];
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unsigned char suborder;
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unsigned char varies[9];
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} __attribute__ ((packed));
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/*
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* Perform Subsystem Function - Set Subsystem Characteristics
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*/
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struct dasd_psf_ssc_data {
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unsigned char order;
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unsigned char flags;
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unsigned char cu_type[4];
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unsigned char suborder;
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unsigned char reserved[59];
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} __attribute__((packed));
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/*
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* some structures and definitions for alias handling
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*/
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struct dasd_unit_address_configuration {
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struct {
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char ua_type;
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char base_ua;
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} unit[256];
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} __attribute__((packed));
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#define MAX_DEVICES_PER_LCU 256
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/* flags on the LCU */
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#define NEED_UAC_UPDATE 0x01
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#define UPDATE_PENDING 0x02
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enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
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struct alias_root {
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struct list_head serverlist;
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spinlock_t lock;
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};
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struct alias_server {
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struct list_head server;
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struct dasd_uid uid;
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struct list_head lculist;
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};
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struct summary_unit_check_work_data {
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char reason;
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struct dasd_device *device;
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struct work_struct worker;
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};
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struct read_uac_work_data {
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struct dasd_device *device;
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struct delayed_work dwork;
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};
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struct alias_lcu {
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struct list_head lcu;
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struct dasd_uid uid;
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enum pavtype pav;
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char flags;
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spinlock_t lock;
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struct list_head grouplist;
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struct list_head active_devices;
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struct list_head inactive_devices;
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struct dasd_unit_address_configuration *uac;
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struct summary_unit_check_work_data suc_data;
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struct read_uac_work_data ruac_data;
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struct dasd_ccw_req *rsu_cqr;
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};
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struct alias_pav_group {
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struct list_head group;
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struct dasd_uid uid;
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struct alias_lcu *lcu;
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struct list_head baselist;
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struct list_head aliaslist;
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struct dasd_device *next;
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};
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struct dasd_eckd_private {
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struct dasd_eckd_characteristics rdc_data;
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struct dasd_eckd_confdata conf_data;
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struct dasd_eckd_path path_data;
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struct eckd_count count_area[5];
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int init_cqr_status;
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int uses_cdl;
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struct attrib_data_t attrib; /* e.g. cache operations */
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struct dasd_rssd_features features;
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/* alias managemnet */
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struct dasd_uid uid;
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struct alias_pav_group *pavgroup;
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struct alias_lcu *lcu;
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int count;
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};
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int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
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void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
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int dasd_alias_add_device(struct dasd_device *);
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int dasd_alias_remove_device(struct dasd_device *);
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struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
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void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
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void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
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#endif /* DASD_ECKD_H */
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