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_RELEASE 0x94
39 #define DASD_ECKD_CCW_WRITE_FULL_TRACK 0x95
40 #define DASD_ECKD_CCW_READ_CKD_MT 0x9e
41 #define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
42 #define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5
43 #define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6
44 #define DASD_ECKD_CCW_RESERVE 0xB4
45 #define DASD_ECKD_CCW_READ_TRACK 0xDE
46 #define DASD_ECKD_CCW_PFX 0xE7
47 #define DASD_ECKD_CCW_PFX_READ 0xEA
48 #define DASD_ECKD_CCW_RSCK 0xF9
49 #define DASD_ECKD_CCW_RCD 0xFA
52 * Perform Subsystem Function / Sub-Orders
54 #define PSF_ORDER_PRSSD 0x18
55 #define PSF_ORDER_CUIR_RESPONSE 0x1A
56 #define PSF_ORDER_SSC 0x1D
59 * CUIR response condition codes
61 #define PSF_CUIR_INVALID 0x00
62 #define PSF_CUIR_COMPLETED 0x01
63 #define PSF_CUIR_NOT_SUPPORTED 0x02
64 #define PSF_CUIR_ERROR_IN_REQ 0x03
65 #define PSF_CUIR_DENIED 0x04
66 #define PSF_CUIR_LAST_PATH 0x05
67 #define PSF_CUIR_DEVICE_ONLINE 0x06
68 #define PSF_CUIR_VARY_FAILURE 0x07
69 #define PSF_CUIR_SOFTWARE_FAILURE 0x08
70 #define PSF_CUIR_NOT_RECOGNIZED 0x09
75 #define CUIR_QUIESCE 0x01
76 #define CUIR_RESUME 0x02
79 * attention message definitions
81 #define ATTENTION_LENGTH_CUIR 0x0e
82 #define ATTENTION_FORMAT_CUIR 0x01
85 * Size that is reportet for large volumes in the old 16-bit no_cyl field
87 #define LV_COMPAT_CYL 0xFFFE
90 #define FCX_MAX_DATA_FACTOR 65536
91 #define DASD_ECKD_RCD_DATA_SIZE 256
94 /*****************************************************************************
95 * SECTION: Type Definitions
96 ****************************************************************************/
104 } __attribute__ ((packed));
109 } __attribute__ ((packed));
115 } __attribute__ ((packed));
121 } __attribute__ ((packed));
127 } __attribute__ ((packed));
130 __u8 skip_control[14];
132 __u8 physical_addr[3];
134 struct ch_t track_addr;
138 } __attribute__ ((packed));
140 struct DE_eckd_data {
142 unsigned char perm:2; /* Permissions on this extent */
143 unsigned char reserved:1;
144 unsigned char seek:2; /* Seek control */
145 unsigned char auth:2; /* Access authorization */
146 unsigned char pci:1; /* PCI Fetch mode */
147 } __attribute__ ((packed)) mask;
149 unsigned char mode:2; /* Architecture mode */
150 unsigned char ckd:1; /* CKD Conversion */
151 unsigned char operation:3; /* Operation mode */
152 unsigned char cfw:1; /* Cache fast write */
153 unsigned char dfw:1; /* DASD fast write */
154 } __attribute__ ((packed)) attributes;
155 __u16 blk_size; /* Blocksize */
157 __u8 ga_additional; /* Global Attributes Additional */
158 __u8 ga_extended; /* Global Attributes Extended */
161 unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
162 __u8 ep_format; /* Extended Parameter format byte */
163 __u8 ep_prio; /* Extended Parameter priority I/O byte */
164 __u8 ep_reserved1; /* Extended Parameter Reserved */
165 __u8 ep_rec_per_track; /* Number of records on a track */
166 __u8 ep_reserved[4]; /* Extended Parameter Reserved */
167 } __attribute__ ((packed));
169 struct LO_eckd_data {
171 unsigned char orientation:2;
172 unsigned char operation:6;
173 } __attribute__ ((packed)) operation;
175 unsigned char last_bytes_used:1;
176 unsigned char reserved:6;
177 unsigned char read_count_suffix:1;
178 } __attribute__ ((packed)) auxiliary;
181 struct ch_t seek_addr;
182 struct chr_t search_arg;
185 } __attribute__ ((packed));
187 struct LRE_eckd_data {
189 unsigned char orientation:2;
190 unsigned char operation:6;
191 } __attribute__ ((packed)) operation;
193 unsigned char length_valid:1;
194 unsigned char length_scope:1;
195 unsigned char imbedded_ccw_valid:1;
196 unsigned char check_bytes:2;
197 unsigned char imbedded_count_valid:1;
198 unsigned char reserved:1;
199 unsigned char read_count_suffix:1;
200 } __attribute__ ((packed)) auxiliary;
203 struct ch_t seek_addr;
204 struct chr_t search_arg;
208 __u8 extended_operation;
209 __u16 extended_parameter_length;
210 __u8 extended_parameter[0];
211 } __attribute__ ((packed));
213 /* Prefix data for format 0x00 and 0x01 */
214 struct PFX_eckd_data {
215 unsigned char format;
217 unsigned char define_extent:1;
218 unsigned char time_stamp:1;
219 unsigned char verify_base:1;
220 unsigned char hyper_pav:1;
221 unsigned char reserved:4;
222 } __attribute__ ((packed)) validity;
227 struct DE_eckd_data define_extent;
228 struct LRE_eckd_data locate_record;
229 } __attribute__ ((packed));
231 struct dasd_eckd_characteristics {
234 unsigned char support:2;
235 unsigned char async:1;
236 unsigned char reserved:1;
237 unsigned char cache_info:1;
238 unsigned char model:3;
239 } __attribute__ ((packed)) cu_model;
243 unsigned char mult_burst:1;
244 unsigned char RT_in_LR:1;
245 unsigned char reserved1:1;
246 unsigned char RD_IN_LR:1;
247 unsigned char reserved2:4;
248 unsigned char reserved3:8;
249 unsigned char defect_wr:1;
250 unsigned char XRC_supported:1;
251 unsigned char reserved4:1;
252 unsigned char striping:1;
253 unsigned char reserved5:4;
255 unsigned char reserved6:2;
256 unsigned char cache:1;
257 unsigned char dual_copy:1;
259 unsigned char reset_alleg:1;
260 unsigned char sense_down:1;
261 } __attribute__ ((packed)) facilities;
267 __u8 byte_per_track[3];
275 } __attribute__ ((packed)) f_0x01;
282 } __attribute__ ((packed)) f_0x02;
283 } __attribute__ ((packed)) factors;
303 } __attribute__ ((packed));
305 /* elements of the configuration data */
315 } __attribute__ ((packed)) flags;
321 __u8 HDA_manufacturer[3];
322 __u8 HDA_location[2];
326 } __attribute__ ((packed));
332 } __attribute__ ((packed)) flags;
335 __u8 res2[4]; /* byte 4- 7 */
336 __u8 sua_flags; /* byte 8 */
337 __u8 base_unit_addr; /* byte 9 */
338 __u8 res3[22]; /* byte 10-31 */
339 } __attribute__ ((packed));
345 } __attribute__ ((packed)) flags;
348 __u8 res2[4]; /* byte 4- 7 */
349 __u8 uit[16]; /* byte 8-23 */
350 __u8 res3[8]; /* byte 24-31 */
351 } __attribute__ ((packed));
357 } __attribute__ ((packed)) flags;
358 __u8 record_selector;
363 } __attribute__ ((packed)) timeout;
367 } __attribute__ ((packed));
369 struct dasd_rssd_features {
371 } __attribute__((packed));
373 struct dasd_rssd_messages {
382 struct dasd_cuir_message {
390 __u8 record_selector;
393 struct dasd_psf_cuir_response {
407 * Perform Subsystem Function - Prepare for Read Subsystem Data
409 struct dasd_psf_prssd_data {
412 unsigned char reserved[4];
413 unsigned char suborder;
414 unsigned char varies[5];
415 } __attribute__ ((packed));
418 * Perform Subsystem Function - Set Subsystem Characteristics
420 struct dasd_psf_ssc_data {
423 unsigned char cu_type[4];
424 unsigned char suborder;
425 unsigned char reserved[59];
426 } __attribute__((packed));
430 * some structures and definitions for alias handling
432 struct dasd_unit_address_configuration {
437 } __attribute__((packed));
440 #define MAX_DEVICES_PER_LCU 256
442 /* flags on the LCU */
443 #define NEED_UAC_UPDATE 0x01
444 #define UPDATE_PENDING 0x02
446 enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
450 struct list_head serverlist;
454 struct alias_server {
455 struct list_head server;
457 struct list_head lculist;
460 struct summary_unit_check_work_data {
462 struct dasd_device *device;
463 struct work_struct worker;
466 struct read_uac_work_data {
467 struct dasd_device *device;
468 struct delayed_work dwork;
472 struct list_head lcu;
477 struct list_head grouplist;
478 struct list_head active_devices;
479 struct list_head inactive_devices;
480 struct dasd_unit_address_configuration *uac;
481 struct summary_unit_check_work_data suc_data;
482 struct read_uac_work_data ruac_data;
483 struct dasd_ccw_req *rsu_cqr;
484 struct completion lcu_setup;
487 struct alias_pav_group {
488 struct list_head group;
490 struct alias_lcu *lcu;
491 struct list_head baselist;
492 struct list_head aliaslist;
493 struct dasd_device *next;
496 struct dasd_conf_data {
497 struct dasd_ned neds[5];
499 struct dasd_gneq gneq;
502 struct dasd_eckd_private {
503 struct dasd_eckd_characteristics rdc_data;
506 /* per path configuration data */
507 struct dasd_conf_data *path_conf_data[8];
508 /* pointers to specific parts in the conf_data */
509 struct dasd_ned *ned;
510 struct dasd_sneq *sneq;
511 struct vd_sneq *vdsneq;
512 struct dasd_gneq *gneq;
514 struct eckd_count count_area[5];
517 struct attrib_data_t attrib; /* e.g. cache operations */
518 struct dasd_rssd_features features;
521 /* alias managemnet */
523 struct alias_pav_group *pavgroup;
524 struct alias_lcu *lcu;
532 int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
533 void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
534 int dasd_alias_add_device(struct dasd_device *);
535 int dasd_alias_remove_device(struct dasd_device *);
536 struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
537 void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
538 void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
539 void dasd_alias_lcu_setup_complete(struct dasd_device *);
540 void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
541 int dasd_alias_update_add_device(struct dasd_device *);
542 #endif /* DASD_ECKD_H */