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_LOCATE_RECORD_EXT 0x4b
33 #define DASD_ECKD_CCW_SNSS 0x54
34 #define DASD_ECKD_CCW_DEFINE_EXTENT 0x63
35 #define DASD_ECKD_CCW_WRITE_MT 0x85
36 #define DASD_ECKD_CCW_READ_MT 0x86
37 #define DASD_ECKD_CCW_WRITE_KD_MT 0x8d
38 #define DASD_ECKD_CCW_READ_KD_MT 0x8e
39 #define DASD_ECKD_CCW_READ_COUNT_MT 0x92
40 #define DASD_ECKD_CCW_RELEASE 0x94
41 #define DASD_ECKD_CCW_WRITE_FULL_TRACK 0x95
42 #define DASD_ECKD_CCW_READ_CKD_MT 0x9e
43 #define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
44 #define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5
45 #define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6
46 #define DASD_ECKD_CCW_RESERVE 0xB4
47 #define DASD_ECKD_CCW_READ_TRACK 0xDE
48 #define DASD_ECKD_CCW_PFX 0xE7
49 #define DASD_ECKD_CCW_PFX_READ 0xEA
50 #define DASD_ECKD_CCW_RSCK 0xF9
51 #define DASD_ECKD_CCW_RCD 0xFA
54 * Perform Subsystem Function / Sub-Orders
56 #define PSF_ORDER_PRSSD 0x18
57 #define PSF_ORDER_CUIR_RESPONSE 0x1A
58 #define PSF_SUBORDER_QHA 0x1C
59 #define PSF_ORDER_SSC 0x1D
62 * CUIR response condition codes
64 #define PSF_CUIR_INVALID 0x00
65 #define PSF_CUIR_COMPLETED 0x01
66 #define PSF_CUIR_NOT_SUPPORTED 0x02
67 #define PSF_CUIR_ERROR_IN_REQ 0x03
68 #define PSF_CUIR_DENIED 0x04
69 #define PSF_CUIR_LAST_PATH 0x05
70 #define PSF_CUIR_DEVICE_ONLINE 0x06
71 #define PSF_CUIR_VARY_FAILURE 0x07
72 #define PSF_CUIR_SOFTWARE_FAILURE 0x08
73 #define PSF_CUIR_NOT_RECOGNIZED 0x09
78 #define CUIR_QUIESCE 0x01
79 #define CUIR_RESUME 0x02
82 * attention message definitions
84 #define ATTENTION_LENGTH_CUIR 0x0e
85 #define ATTENTION_FORMAT_CUIR 0x01
87 #define DASD_ECKD_PG_GROUPED 0x10
90 * Size that is reportet for large volumes in the old 16-bit no_cyl field
92 #define LV_COMPAT_CYL 0xFFFE
95 #define FCX_MAX_DATA_FACTOR 65536
96 #define DASD_ECKD_RCD_DATA_SIZE 256
98 #define DASD_ECKD_PATH_THRHLD 256
99 #define DASD_ECKD_PATH_INTERVAL 300
101 /*****************************************************************************
102 * SECTION: Type Definitions
103 ****************************************************************************/
111 } __attribute__ ((packed));
116 } __attribute__ ((packed));
122 } __attribute__ ((packed));
128 } __attribute__ ((packed));
134 } __attribute__ ((packed));
137 __u8 skip_control[14];
139 __u8 physical_addr[3];
141 struct ch_t track_addr;
145 } __attribute__ ((packed));
147 struct DE_eckd_data {
149 unsigned char perm:2; /* Permissions on this extent */
150 unsigned char reserved:1;
151 unsigned char seek:2; /* Seek control */
152 unsigned char auth:2; /* Access authorization */
153 unsigned char pci:1; /* PCI Fetch mode */
154 } __attribute__ ((packed)) mask;
156 unsigned char mode:2; /* Architecture mode */
157 unsigned char ckd:1; /* CKD Conversion */
158 unsigned char operation:3; /* Operation mode */
159 unsigned char cfw:1; /* Cache fast write */
160 unsigned char dfw:1; /* DASD fast write */
161 } __attribute__ ((packed)) attributes;
162 __u16 blk_size; /* Blocksize */
164 __u8 ga_additional; /* Global Attributes Additional */
165 __u8 ga_extended; /* Global Attributes Extended */
168 unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
169 __u8 ep_format; /* Extended Parameter format byte */
170 __u8 ep_prio; /* Extended Parameter priority I/O byte */
171 __u8 ep_reserved1; /* Extended Parameter Reserved */
172 __u8 ep_rec_per_track; /* Number of records on a track */
173 __u8 ep_reserved[4]; /* Extended Parameter Reserved */
174 } __attribute__ ((packed));
176 struct LO_eckd_data {
178 unsigned char orientation:2;
179 unsigned char operation:6;
180 } __attribute__ ((packed)) operation;
182 unsigned char last_bytes_used:1;
183 unsigned char reserved:6;
184 unsigned char read_count_suffix:1;
185 } __attribute__ ((packed)) auxiliary;
188 struct ch_t seek_addr;
189 struct chr_t search_arg;
192 } __attribute__ ((packed));
194 struct LRE_eckd_data {
196 unsigned char orientation:2;
197 unsigned char operation:6;
198 } __attribute__ ((packed)) operation;
200 unsigned char length_valid:1;
201 unsigned char length_scope:1;
202 unsigned char imbedded_ccw_valid:1;
203 unsigned char check_bytes:2;
204 unsigned char imbedded_count_valid:1;
205 unsigned char reserved:1;
206 unsigned char read_count_suffix:1;
207 } __attribute__ ((packed)) auxiliary;
210 struct ch_t seek_addr;
211 struct chr_t search_arg;
215 __u8 extended_operation;
216 __u16 extended_parameter_length;
217 __u8 extended_parameter[0];
218 } __attribute__ ((packed));
220 /* Prefix data for format 0x00 and 0x01 */
221 struct PFX_eckd_data {
222 unsigned char format;
224 unsigned char define_extent:1;
225 unsigned char time_stamp:1;
226 unsigned char verify_base:1;
227 unsigned char hyper_pav:1;
228 unsigned char reserved:4;
229 } __attribute__ ((packed)) validity;
234 struct DE_eckd_data define_extent;
235 struct LRE_eckd_data locate_record;
236 } __attribute__ ((packed));
238 struct dasd_eckd_characteristics {
241 unsigned char support:2;
242 unsigned char async:1;
243 unsigned char reserved:1;
244 unsigned char cache_info:1;
245 unsigned char model:3;
246 } __attribute__ ((packed)) cu_model;
250 unsigned char mult_burst:1;
251 unsigned char RT_in_LR:1;
252 unsigned char reserved1:1;
253 unsigned char RD_IN_LR:1;
254 unsigned char reserved2:4;
255 unsigned char reserved3:8;
256 unsigned char defect_wr:1;
257 unsigned char XRC_supported:1;
258 unsigned char reserved4:1;
259 unsigned char striping:1;
260 unsigned char reserved5:4;
262 unsigned char reserved6:2;
263 unsigned char cache:1;
264 unsigned char dual_copy:1;
266 unsigned char reset_alleg:1;
267 unsigned char sense_down:1;
268 } __attribute__ ((packed)) facilities;
274 __u8 byte_per_track[3];
282 } __attribute__ ((packed)) f_0x01;
289 } __attribute__ ((packed)) f_0x02;
290 } __attribute__ ((packed)) factors;
310 } __attribute__ ((packed));
312 /* elements of the configuration data */
322 } __attribute__ ((packed)) flags;
328 __u8 HDA_manufacturer[3];
329 __u8 HDA_location[2];
333 } __attribute__ ((packed));
339 } __attribute__ ((packed)) flags;
342 __u8 res2[4]; /* byte 4- 7 */
343 __u8 sua_flags; /* byte 8 */
344 __u8 base_unit_addr; /* byte 9 */
345 __u8 res3[22]; /* byte 10-31 */
346 } __attribute__ ((packed));
352 } __attribute__ ((packed)) flags;
355 __u8 res2[4]; /* byte 4- 7 */
356 __u8 uit[16]; /* byte 8-23 */
357 __u8 res3[8]; /* byte 24-31 */
358 } __attribute__ ((packed));
364 } __attribute__ ((packed)) flags;
365 __u8 record_selector;
370 } __attribute__ ((packed)) timeout;
374 } __attribute__ ((packed));
376 struct dasd_rssd_features {
378 } __attribute__((packed));
380 struct dasd_rssd_messages {
389 struct dasd_cuir_message {
397 __u8 record_selector;
400 struct dasd_psf_cuir_response {
413 struct dasd_ckd_path_group_entry {
416 __u8 sysplex_name[8];
422 struct dasd_ckd_host_information {
429 struct dasd_psf_query_host_access {
435 __u8 host_access_information[16394];
439 * Perform Subsystem Function - Prepare for Read Subsystem Data
441 struct dasd_psf_prssd_data {
444 unsigned char reserved1;
445 unsigned char reserved2;
447 unsigned char volume;
448 unsigned char suborder;
449 unsigned char varies[5];
450 } __attribute__ ((packed));
453 * Perform Subsystem Function - Set Subsystem Characteristics
455 struct dasd_psf_ssc_data {
458 unsigned char cu_type[4];
459 unsigned char suborder;
460 unsigned char reserved[59];
461 } __attribute__((packed));
465 * some structures and definitions for alias handling
467 struct dasd_unit_address_configuration {
472 } __attribute__((packed));
475 #define MAX_DEVICES_PER_LCU 256
477 /* flags on the LCU */
478 #define NEED_UAC_UPDATE 0x01
479 #define UPDATE_PENDING 0x02
481 enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
485 struct list_head serverlist;
489 struct alias_server {
490 struct list_head server;
492 struct list_head lculist;
495 struct summary_unit_check_work_data {
497 struct dasd_device *device;
498 struct work_struct worker;
501 struct read_uac_work_data {
502 struct dasd_device *device;
503 struct delayed_work dwork;
507 struct list_head lcu;
512 struct list_head grouplist;
513 struct list_head active_devices;
514 struct list_head inactive_devices;
515 struct dasd_unit_address_configuration *uac;
516 struct summary_unit_check_work_data suc_data;
517 struct read_uac_work_data ruac_data;
518 struct dasd_ccw_req *rsu_cqr;
519 struct completion lcu_setup;
522 struct alias_pav_group {
523 struct list_head group;
525 struct alias_lcu *lcu;
526 struct list_head baselist;
527 struct list_head aliaslist;
528 struct dasd_device *next;
531 struct dasd_conf_data {
532 struct dasd_ned neds[5];
534 struct dasd_gneq gneq;
537 struct dasd_eckd_private {
538 struct dasd_eckd_characteristics rdc_data;
542 /* pointers to specific parts in the conf_data */
543 struct dasd_ned *ned;
544 struct dasd_sneq *sneq;
545 struct vd_sneq *vdsneq;
546 struct dasd_gneq *gneq;
548 struct eckd_count count_area[5];
551 struct attrib_data_t attrib; /* e.g. cache operations */
552 struct dasd_rssd_features features;
555 /* alias managemnet */
557 struct alias_pav_group *pavgroup;
558 struct alias_lcu *lcu;
567 int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
568 void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
569 int dasd_alias_add_device(struct dasd_device *);
570 int dasd_alias_remove_device(struct dasd_device *);
571 struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
572 void dasd_alias_handle_summary_unit_check(struct work_struct *);
573 void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
574 void dasd_alias_lcu_setup_complete(struct dasd_device *);
575 void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
576 int dasd_alias_update_add_device(struct dasd_device *);
577 #endif /* DASD_ECKD_H */