2 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
3 * Horst Hummel <Horst.Hummel@de.ibm.com>
4 * Bugreports.to..: <Linux390@de.ibm.com>
5 * Copyright IBM Corp. 1999, 2000
12 /*****************************************************************************
13 * SECTION: CCW Definitions
14 ****************************************************************************/
15 #define DASD_ECKD_CCW_WRITE 0x05
16 #define DASD_ECKD_CCW_READ 0x06
17 #define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
18 #define DASD_ECKD_CCW_READ_HOME_ADDRESS 0x0a
19 #define DASD_ECKD_CCW_WRITE_KD 0x0d
20 #define DASD_ECKD_CCW_READ_KD 0x0e
21 #define DASD_ECKD_CCW_ERASE 0x11
22 #define DASD_ECKD_CCW_READ_COUNT 0x12
23 #define DASD_ECKD_CCW_SLCK 0x14
24 #define DASD_ECKD_CCW_WRITE_RECORD_ZERO 0x15
25 #define DASD_ECKD_CCW_READ_RECORD_ZERO 0x16
26 #define DASD_ECKD_CCW_WRITE_CKD 0x1d
27 #define DASD_ECKD_CCW_READ_CKD 0x1e
28 #define DASD_ECKD_CCW_PSF 0x27
29 #define DASD_ECKD_CCW_SNID 0x34
30 #define DASD_ECKD_CCW_RSSD 0x3e
31 #define DASD_ECKD_CCW_LOCATE_RECORD 0x47
32 #define DASD_ECKD_CCW_SNSS 0x54
33 #define DASD_ECKD_CCW_DEFINE_EXTENT 0x63
34 #define DASD_ECKD_CCW_WRITE_MT 0x85
35 #define DASD_ECKD_CCW_READ_MT 0x86
36 #define DASD_ECKD_CCW_WRITE_KD_MT 0x8d
37 #define DASD_ECKD_CCW_READ_KD_MT 0x8e
38 #define DASD_ECKD_CCW_READ_COUNT_MT 0x92
39 #define DASD_ECKD_CCW_RELEASE 0x94
40 #define DASD_ECKD_CCW_WRITE_FULL_TRACK 0x95
41 #define DASD_ECKD_CCW_READ_CKD_MT 0x9e
42 #define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
43 #define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5
44 #define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6
45 #define DASD_ECKD_CCW_RESERVE 0xB4
46 #define DASD_ECKD_CCW_READ_TRACK 0xDE
47 #define DASD_ECKD_CCW_PFX 0xE7
48 #define DASD_ECKD_CCW_PFX_READ 0xEA
49 #define DASD_ECKD_CCW_RSCK 0xF9
50 #define DASD_ECKD_CCW_RCD 0xFA
53 * Perform Subsystem Function / Sub-Orders
55 #define PSF_ORDER_PRSSD 0x18
56 #define PSF_ORDER_CUIR_RESPONSE 0x1A
57 #define PSF_SUBORDER_QHA 0x1C
58 #define PSF_ORDER_SSC 0x1D
61 * CUIR response condition codes
63 #define PSF_CUIR_INVALID 0x00
64 #define PSF_CUIR_COMPLETED 0x01
65 #define PSF_CUIR_NOT_SUPPORTED 0x02
66 #define PSF_CUIR_ERROR_IN_REQ 0x03
67 #define PSF_CUIR_DENIED 0x04
68 #define PSF_CUIR_LAST_PATH 0x05
69 #define PSF_CUIR_DEVICE_ONLINE 0x06
70 #define PSF_CUIR_VARY_FAILURE 0x07
71 #define PSF_CUIR_SOFTWARE_FAILURE 0x08
72 #define PSF_CUIR_NOT_RECOGNIZED 0x09
77 #define CUIR_QUIESCE 0x01
78 #define CUIR_RESUME 0x02
81 * attention message definitions
83 #define ATTENTION_LENGTH_CUIR 0x0e
84 #define ATTENTION_FORMAT_CUIR 0x01
86 #define DASD_ECKD_PG_GROUPED 0x10
89 * Size that is reportet for large volumes in the old 16-bit no_cyl field
91 #define LV_COMPAT_CYL 0xFFFE
94 #define FCX_MAX_DATA_FACTOR 65536
95 #define DASD_ECKD_RCD_DATA_SIZE 256
98 /*****************************************************************************
99 * SECTION: Type Definitions
100 ****************************************************************************/
108 } __attribute__ ((packed
));
113 } __attribute__ ((packed
));
119 } __attribute__ ((packed
));
125 } __attribute__ ((packed
));
131 } __attribute__ ((packed
));
134 __u8 skip_control
[14];
136 __u8 physical_addr
[3];
138 struct ch_t track_addr
;
142 } __attribute__ ((packed
));
144 struct DE_eckd_data
{
146 unsigned char perm
:2; /* Permissions on this extent */
147 unsigned char reserved
:1;
148 unsigned char seek
:2; /* Seek control */
149 unsigned char auth
:2; /* Access authorization */
150 unsigned char pci
:1; /* PCI Fetch mode */
151 } __attribute__ ((packed
)) mask
;
153 unsigned char mode
:2; /* Architecture mode */
154 unsigned char ckd
:1; /* CKD Conversion */
155 unsigned char operation
:3; /* Operation mode */
156 unsigned char cfw
:1; /* Cache fast write */
157 unsigned char dfw
:1; /* DASD fast write */
158 } __attribute__ ((packed
)) attributes
;
159 __u16 blk_size
; /* Blocksize */
161 __u8 ga_additional
; /* Global Attributes Additional */
162 __u8 ga_extended
; /* Global Attributes Extended */
165 unsigned long long ep_sys_time
; /* Ext Parameter - System Time Stamp */
166 __u8 ep_format
; /* Extended Parameter format byte */
167 __u8 ep_prio
; /* Extended Parameter priority I/O byte */
168 __u8 ep_reserved1
; /* Extended Parameter Reserved */
169 __u8 ep_rec_per_track
; /* Number of records on a track */
170 __u8 ep_reserved
[4]; /* Extended Parameter Reserved */
171 } __attribute__ ((packed
));
173 struct LO_eckd_data
{
175 unsigned char orientation
:2;
176 unsigned char operation
:6;
177 } __attribute__ ((packed
)) operation
;
179 unsigned char last_bytes_used
:1;
180 unsigned char reserved
:6;
181 unsigned char read_count_suffix
:1;
182 } __attribute__ ((packed
)) auxiliary
;
185 struct ch_t seek_addr
;
186 struct chr_t search_arg
;
189 } __attribute__ ((packed
));
191 struct LRE_eckd_data
{
193 unsigned char orientation
:2;
194 unsigned char operation
:6;
195 } __attribute__ ((packed
)) operation
;
197 unsigned char length_valid
:1;
198 unsigned char length_scope
:1;
199 unsigned char imbedded_ccw_valid
:1;
200 unsigned char check_bytes
:2;
201 unsigned char imbedded_count_valid
:1;
202 unsigned char reserved
:1;
203 unsigned char read_count_suffix
:1;
204 } __attribute__ ((packed
)) auxiliary
;
207 struct ch_t seek_addr
;
208 struct chr_t search_arg
;
212 __u8 extended_operation
;
213 __u16 extended_parameter_length
;
214 __u8 extended_parameter
[0];
215 } __attribute__ ((packed
));
217 /* Prefix data for format 0x00 and 0x01 */
218 struct PFX_eckd_data
{
219 unsigned char format
;
221 unsigned char define_extent
:1;
222 unsigned char time_stamp
:1;
223 unsigned char verify_base
:1;
224 unsigned char hyper_pav
:1;
225 unsigned char reserved
:4;
226 } __attribute__ ((packed
)) validity
;
231 struct DE_eckd_data define_extent
;
232 struct LRE_eckd_data locate_record
;
233 } __attribute__ ((packed
));
235 struct dasd_eckd_characteristics
{
238 unsigned char support
:2;
239 unsigned char async
:1;
240 unsigned char reserved
:1;
241 unsigned char cache_info
:1;
242 unsigned char model
:3;
243 } __attribute__ ((packed
)) cu_model
;
247 unsigned char mult_burst
:1;
248 unsigned char RT_in_LR
:1;
249 unsigned char reserved1
:1;
250 unsigned char RD_IN_LR
:1;
251 unsigned char reserved2
:4;
252 unsigned char reserved3
:8;
253 unsigned char defect_wr
:1;
254 unsigned char XRC_supported
:1;
255 unsigned char reserved4
:1;
256 unsigned char striping
:1;
257 unsigned char reserved5
:4;
259 unsigned char reserved6
:2;
260 unsigned char cache
:1;
261 unsigned char dual_copy
:1;
263 unsigned char reset_alleg
:1;
264 unsigned char sense_down
:1;
265 } __attribute__ ((packed
)) facilities
;
271 __u8 byte_per_track
[3];
279 } __attribute__ ((packed
)) f_0x01
;
286 } __attribute__ ((packed
)) f_0x02
;
287 } __attribute__ ((packed
)) factors
;
307 } __attribute__ ((packed
));
309 /* elements of the configuration data */
319 } __attribute__ ((packed
)) flags
;
325 __u8 HDA_manufacturer
[3];
326 __u8 HDA_location
[2];
330 } __attribute__ ((packed
));
336 } __attribute__ ((packed
)) flags
;
339 __u8 res2
[4]; /* byte 4- 7 */
340 __u8 sua_flags
; /* byte 8 */
341 __u8 base_unit_addr
; /* byte 9 */
342 __u8 res3
[22]; /* byte 10-31 */
343 } __attribute__ ((packed
));
349 } __attribute__ ((packed
)) flags
;
352 __u8 res2
[4]; /* byte 4- 7 */
353 __u8 uit
[16]; /* byte 8-23 */
354 __u8 res3
[8]; /* byte 24-31 */
355 } __attribute__ ((packed
));
361 } __attribute__ ((packed
)) flags
;
362 __u8 record_selector
;
367 } __attribute__ ((packed
)) timeout
;
371 } __attribute__ ((packed
));
373 struct dasd_rssd_features
{
375 } __attribute__((packed
));
377 struct dasd_rssd_messages
{
386 struct dasd_cuir_message
{
394 __u8 record_selector
;
397 struct dasd_psf_cuir_response
{
410 struct dasd_ckd_path_group_entry
{
413 __u8 sysplex_name
[8];
419 struct dasd_ckd_host_information
{
426 struct dasd_psf_query_host_access
{
432 __u8 host_access_information
[16394];
436 * Perform Subsystem Function - Prepare for Read Subsystem Data
438 struct dasd_psf_prssd_data
{
441 unsigned char reserved1
;
442 unsigned char reserved2
;
444 unsigned char volume
;
445 unsigned char suborder
;
446 unsigned char varies
[5];
447 } __attribute__ ((packed
));
450 * Perform Subsystem Function - Set Subsystem Characteristics
452 struct dasd_psf_ssc_data
{
455 unsigned char cu_type
[4];
456 unsigned char suborder
;
457 unsigned char reserved
[59];
458 } __attribute__((packed
));
462 * some structures and definitions for alias handling
464 struct dasd_unit_address_configuration
{
469 } __attribute__((packed
));
472 #define MAX_DEVICES_PER_LCU 256
474 /* flags on the LCU */
475 #define NEED_UAC_UPDATE 0x01
476 #define UPDATE_PENDING 0x02
478 enum pavtype
{NO_PAV
, BASE_PAV
, HYPER_PAV
};
482 struct list_head serverlist
;
486 struct alias_server
{
487 struct list_head server
;
489 struct list_head lculist
;
492 struct summary_unit_check_work_data
{
494 struct dasd_device
*device
;
495 struct work_struct worker
;
498 struct read_uac_work_data
{
499 struct dasd_device
*device
;
500 struct delayed_work dwork
;
504 struct list_head lcu
;
509 struct list_head grouplist
;
510 struct list_head active_devices
;
511 struct list_head inactive_devices
;
512 struct dasd_unit_address_configuration
*uac
;
513 struct summary_unit_check_work_data suc_data
;
514 struct read_uac_work_data ruac_data
;
515 struct dasd_ccw_req
*rsu_cqr
;
516 struct completion lcu_setup
;
519 struct alias_pav_group
{
520 struct list_head group
;
522 struct alias_lcu
*lcu
;
523 struct list_head baselist
;
524 struct list_head aliaslist
;
525 struct dasd_device
*next
;
528 struct dasd_conf_data
{
529 struct dasd_ned neds
[5];
531 struct dasd_gneq gneq
;
534 struct dasd_eckd_private
{
535 struct dasd_eckd_characteristics rdc_data
;
538 /* per path configuration data */
539 struct dasd_conf_data
*path_conf_data
[8];
540 /* pointers to specific parts in the conf_data */
541 struct dasd_ned
*ned
;
542 struct dasd_sneq
*sneq
;
543 struct vd_sneq
*vdsneq
;
544 struct dasd_gneq
*gneq
;
546 struct eckd_count count_area
[5];
549 struct attrib_data_t attrib
; /* e.g. cache operations */
550 struct dasd_rssd_features features
;
553 /* alias managemnet */
555 struct alias_pav_group
*pavgroup
;
556 struct alias_lcu
*lcu
;
565 int dasd_alias_make_device_known_to_lcu(struct dasd_device
*);
566 void dasd_alias_disconnect_device_from_lcu(struct dasd_device
*);
567 int dasd_alias_add_device(struct dasd_device
*);
568 int dasd_alias_remove_device(struct dasd_device
*);
569 struct dasd_device
*dasd_alias_get_start_dev(struct dasd_device
*);
570 void dasd_alias_handle_summary_unit_check(struct work_struct
*);
571 void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req
*);
572 void dasd_alias_lcu_setup_complete(struct dasd_device
*);
573 void dasd_alias_wait_for_lcu_setup(struct dasd_device
*);
574 int dasd_alias_update_add_device(struct dasd_device
*);
575 #endif /* DASD_ECKD_H */