1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
4 * Horst Hummel <Horst.Hummel@de.ibm.com>
5 * Bugreports.to..: <Linux390@de.ibm.com>
6 * Copyright IBM Corp. 1999, 2000
13 /*****************************************************************************
14 * SECTION: CCW Definitions
15 ****************************************************************************/
16 #define DASD_ECKD_CCW_WRITE 0x05
17 #define DASD_ECKD_CCW_READ 0x06
18 #define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
19 #define DASD_ECKD_CCW_READ_HOME_ADDRESS 0x0a
20 #define DASD_ECKD_CCW_WRITE_KD 0x0d
21 #define DASD_ECKD_CCW_READ_KD 0x0e
22 #define DASD_ECKD_CCW_ERASE 0x11
23 #define DASD_ECKD_CCW_READ_COUNT 0x12
24 #define DASD_ECKD_CCW_SLCK 0x14
25 #define DASD_ECKD_CCW_WRITE_RECORD_ZERO 0x15
26 #define DASD_ECKD_CCW_READ_RECORD_ZERO 0x16
27 #define DASD_ECKD_CCW_WRITE_CKD 0x1d
28 #define DASD_ECKD_CCW_READ_CKD 0x1e
29 #define DASD_ECKD_CCW_PSF 0x27
30 #define DASD_ECKD_CCW_SNID 0x34
31 #define DASD_ECKD_CCW_RSSD 0x3e
32 #define DASD_ECKD_CCW_LOCATE_RECORD 0x47
33 #define DASD_ECKD_CCW_LOCATE_RECORD_EXT 0x4b
34 #define DASD_ECKD_CCW_SNSS 0x54
35 #define DASD_ECKD_CCW_DEFINE_EXTENT 0x63
36 #define DASD_ECKD_CCW_WRITE_MT 0x85
37 #define DASD_ECKD_CCW_READ_MT 0x86
38 #define DASD_ECKD_CCW_WRITE_KD_MT 0x8d
39 #define DASD_ECKD_CCW_READ_KD_MT 0x8e
40 #define DASD_ECKD_CCW_READ_COUNT_MT 0x92
41 #define DASD_ECKD_CCW_RELEASE 0x94
42 #define DASD_ECKD_CCW_WRITE_FULL_TRACK 0x95
43 #define DASD_ECKD_CCW_READ_CKD_MT 0x9e
44 #define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
45 #define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5
46 #define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6
47 #define DASD_ECKD_CCW_RESERVE 0xB4
48 #define DASD_ECKD_CCW_READ_TRACK 0xDE
49 #define DASD_ECKD_CCW_PFX 0xE7
50 #define DASD_ECKD_CCW_PFX_READ 0xEA
51 #define DASD_ECKD_CCW_RSCK 0xF9
52 #define DASD_ECKD_CCW_RCD 0xFA
55 * Perform Subsystem Function / Sub-Orders
57 #define PSF_ORDER_PRSSD 0x18
58 #define PSF_ORDER_CUIR_RESPONSE 0x1A
59 #define PSF_SUBORDER_QHA 0x1C
60 #define PSF_ORDER_SSC 0x1D
63 * CUIR response condition codes
65 #define PSF_CUIR_INVALID 0x00
66 #define PSF_CUIR_COMPLETED 0x01
67 #define PSF_CUIR_NOT_SUPPORTED 0x02
68 #define PSF_CUIR_ERROR_IN_REQ 0x03
69 #define PSF_CUIR_DENIED 0x04
70 #define PSF_CUIR_LAST_PATH 0x05
71 #define PSF_CUIR_DEVICE_ONLINE 0x06
72 #define PSF_CUIR_VARY_FAILURE 0x07
73 #define PSF_CUIR_SOFTWARE_FAILURE 0x08
74 #define PSF_CUIR_NOT_RECOGNIZED 0x09
79 #define CUIR_QUIESCE 0x01
80 #define CUIR_RESUME 0x02
83 * attention message definitions
85 #define ATTENTION_LENGTH_CUIR 0x0e
86 #define ATTENTION_FORMAT_CUIR 0x01
88 #define DASD_ECKD_PG_GROUPED 0x10
91 * Size that is reportet for large volumes in the old 16-bit no_cyl field
93 #define LV_COMPAT_CYL 0xFFFE
96 #define FCX_MAX_DATA_FACTOR 65536
97 #define DASD_ECKD_RCD_DATA_SIZE 256
99 #define DASD_ECKD_PATH_THRHLD 256
100 #define DASD_ECKD_PATH_INTERVAL 300
102 /*****************************************************************************
103 * SECTION: Type Definitions
104 ****************************************************************************/
112 } __attribute__ ((packed));
117 } __attribute__ ((packed));
123 } __attribute__ ((packed));
129 } __attribute__ ((packed));
135 } __attribute__ ((packed));
138 __u8 skip_control[14];
140 __u8 physical_addr[3];
142 struct ch_t track_addr;
146 } __attribute__ ((packed));
148 struct DE_eckd_data {
150 unsigned char perm:2; /* Permissions on this extent */
151 unsigned char reserved:1;
152 unsigned char seek:2; /* Seek control */
153 unsigned char auth:2; /* Access authorization */
154 unsigned char pci:1; /* PCI Fetch mode */
155 } __attribute__ ((packed)) mask;
157 unsigned char mode:2; /* Architecture mode */
158 unsigned char ckd:1; /* CKD Conversion */
159 unsigned char operation:3; /* Operation mode */
160 unsigned char cfw:1; /* Cache fast write */
161 unsigned char dfw:1; /* DASD fast write */
162 } __attribute__ ((packed)) attributes;
163 __u16 blk_size; /* Blocksize */
165 __u8 ga_additional; /* Global Attributes Additional */
166 __u8 ga_extended; /* Global Attributes Extended */
169 unsigned long ep_sys_time; /* Ext Parameter - System Time Stamp */
170 __u8 ep_format; /* Extended Parameter format byte */
171 __u8 ep_prio; /* Extended Parameter priority I/O byte */
172 __u8 ep_reserved1; /* Extended Parameter Reserved */
173 __u8 ep_rec_per_track; /* Number of records on a track */
174 __u8 ep_reserved[4]; /* Extended Parameter Reserved */
175 } __attribute__ ((packed));
177 struct LO_eckd_data {
179 unsigned char orientation:2;
180 unsigned char operation:6;
181 } __attribute__ ((packed)) operation;
183 unsigned char last_bytes_used:1;
184 unsigned char reserved:6;
185 unsigned char read_count_suffix:1;
186 } __attribute__ ((packed)) auxiliary;
189 struct ch_t seek_addr;
190 struct chr_t search_arg;
193 } __attribute__ ((packed));
195 struct LRE_eckd_data {
197 unsigned char orientation:2;
198 unsigned char operation:6;
199 } __attribute__ ((packed)) operation;
201 unsigned char length_valid:1;
202 unsigned char length_scope:1;
203 unsigned char imbedded_ccw_valid:1;
204 unsigned char check_bytes:2;
205 unsigned char imbedded_count_valid:1;
206 unsigned char reserved:1;
207 unsigned char read_count_suffix:1;
208 } __attribute__ ((packed)) auxiliary;
211 struct ch_t seek_addr;
212 struct chr_t search_arg;
216 __u8 extended_operation;
217 __u16 extended_parameter_length;
218 __u8 extended_parameter[0];
219 } __attribute__ ((packed));
221 /* Prefix data for format 0x00 and 0x01 */
222 struct PFX_eckd_data {
223 unsigned char format;
225 unsigned char define_extent:1;
226 unsigned char time_stamp:1;
227 unsigned char verify_base:1;
228 unsigned char hyper_pav:1;
229 unsigned char reserved:4;
230 } __attribute__ ((packed)) validity;
235 struct DE_eckd_data define_extent;
236 struct LRE_eckd_data locate_record;
237 } __attribute__ ((packed));
239 struct dasd_eckd_characteristics {
242 unsigned char support:2;
243 unsigned char async:1;
244 unsigned char reserved:1;
245 unsigned char cache_info:1;
246 unsigned char model:3;
247 } __attribute__ ((packed)) cu_model;
251 unsigned char mult_burst:1;
252 unsigned char RT_in_LR:1;
253 unsigned char reserved1:1;
254 unsigned char RD_IN_LR:1;
255 unsigned char reserved2:4;
256 unsigned char reserved3:8;
257 unsigned char defect_wr:1;
258 unsigned char XRC_supported:1;
259 unsigned char reserved4:1;
260 unsigned char striping:1;
261 unsigned char reserved5:4;
263 unsigned char reserved6:2;
264 unsigned char cache:1;
265 unsigned char dual_copy:1;
267 unsigned char reset_alleg:1;
268 unsigned char sense_down:1;
269 } __attribute__ ((packed)) facilities;
275 __u8 byte_per_track[3];
283 } __attribute__ ((packed)) f_0x01;
290 } __attribute__ ((packed)) f_0x02;
291 } __attribute__ ((packed)) factors;
311 } __attribute__ ((packed));
313 /* elements of the configuration data */
323 } __attribute__ ((packed)) flags;
329 __u8 HDA_manufacturer[3];
330 __u8 HDA_location[2];
334 } __attribute__ ((packed));
340 } __attribute__ ((packed)) flags;
343 __u8 res2[4]; /* byte 4- 7 */
344 __u8 sua_flags; /* byte 8 */
345 __u8 base_unit_addr; /* byte 9 */
346 __u8 res3[22]; /* byte 10-31 */
347 } __attribute__ ((packed));
353 } __attribute__ ((packed)) flags;
356 __u8 res2[4]; /* byte 4- 7 */
357 __u8 uit[16]; /* byte 8-23 */
358 __u8 res3[8]; /* byte 24-31 */
359 } __attribute__ ((packed));
365 } __attribute__ ((packed)) flags;
366 __u8 record_selector;
371 } __attribute__ ((packed)) timeout;
375 } __attribute__ ((packed));
377 struct dasd_rssd_features {
379 } __attribute__((packed));
381 struct dasd_rssd_messages {
390 struct dasd_cuir_message {
398 __u8 record_selector;
401 struct dasd_psf_cuir_response {
414 struct dasd_ckd_path_group_entry {
417 __u8 sysplex_name[8];
423 struct dasd_ckd_host_information {
430 struct dasd_psf_query_host_access {
436 __u8 host_access_information[16394];
440 * Perform Subsystem Function - Prepare for Read Subsystem Data
442 struct dasd_psf_prssd_data {
445 unsigned char reserved1;
446 unsigned char reserved2;
448 unsigned char volume;
449 unsigned char suborder;
450 unsigned char varies[5];
451 } __attribute__ ((packed));
454 * Perform Subsystem Function - Set Subsystem Characteristics
456 struct dasd_psf_ssc_data {
459 unsigned char cu_type[4];
460 unsigned char suborder;
461 unsigned char reserved[59];
462 } __attribute__((packed));
466 * some structures and definitions for alias handling
468 struct dasd_unit_address_configuration {
473 } __attribute__((packed));
476 #define MAX_DEVICES_PER_LCU 256
478 /* flags on the LCU */
479 #define NEED_UAC_UPDATE 0x01
480 #define UPDATE_PENDING 0x02
482 enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
486 struct list_head serverlist;
490 struct alias_server {
491 struct list_head server;
493 struct list_head lculist;
496 struct summary_unit_check_work_data {
498 struct dasd_device *device;
499 struct work_struct worker;
502 struct read_uac_work_data {
503 struct dasd_device *device;
504 struct delayed_work dwork;
508 struct list_head lcu;
513 struct list_head grouplist;
514 struct list_head active_devices;
515 struct list_head inactive_devices;
516 struct dasd_unit_address_configuration *uac;
517 struct summary_unit_check_work_data suc_data;
518 struct read_uac_work_data ruac_data;
519 struct dasd_ccw_req *rsu_cqr;
520 struct completion lcu_setup;
523 struct alias_pav_group {
524 struct list_head group;
526 struct alias_lcu *lcu;
527 struct list_head baselist;
528 struct list_head aliaslist;
529 struct dasd_device *next;
532 struct dasd_conf_data {
533 struct dasd_ned neds[5];
535 struct dasd_gneq gneq;
538 struct dasd_eckd_private {
539 struct dasd_eckd_characteristics rdc_data;
543 /* pointers to specific parts in the conf_data */
544 struct dasd_ned *ned;
545 struct dasd_sneq *sneq;
546 struct vd_sneq *vdsneq;
547 struct dasd_gneq *gneq;
549 struct eckd_count count_area[5];
552 struct attrib_data_t attrib; /* e.g. cache operations */
553 struct dasd_rssd_features features;
556 /* alias managemnet */
558 struct alias_pav_group *pavgroup;
559 struct alias_lcu *lcu;
568 int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
569 void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
570 int dasd_alias_add_device(struct dasd_device *);
571 int dasd_alias_remove_device(struct dasd_device *);
572 struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
573 void dasd_alias_handle_summary_unit_check(struct work_struct *);
574 void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
575 void dasd_alias_lcu_setup_complete(struct dasd_device *);
576 void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
577 int dasd_alias_update_add_device(struct dasd_device *);
578 #endif /* DASD_ECKD_H */