2 * File...........: linux/drivers/s390/block/dasd_eckd.h
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 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 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_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_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_SSC 0x1D
59 * Size that is reportet for large volumes in the old 16-bit no_cyl field
61 #define LV_COMPAT_CYL 0xFFFE
64 #define FCX_MAX_DATA_FACTOR 65536
65 #define DASD_ECKD_RCD_DATA_SIZE 256
68 /*****************************************************************************
69 * SECTION: Type Definitions
70 ****************************************************************************/
78 } __attribute__ ((packed));
83 } __attribute__ ((packed));
89 } __attribute__ ((packed));
95 } __attribute__ ((packed));
101 } __attribute__ ((packed));
104 __u8 skip_control[14];
106 __u8 physical_addr[3];
108 struct ch_t track_addr;
112 } __attribute__ ((packed));
114 struct DE_eckd_data {
116 unsigned char perm:2; /* Permissions on this extent */
117 unsigned char reserved:1;
118 unsigned char seek:2; /* Seek control */
119 unsigned char auth:2; /* Access authorization */
120 unsigned char pci:1; /* PCI Fetch mode */
121 } __attribute__ ((packed)) mask;
123 unsigned char mode:2; /* Architecture mode */
124 unsigned char ckd:1; /* CKD Conversion */
125 unsigned char operation:3; /* Operation mode */
126 unsigned char cfw:1; /* Cache fast write */
127 unsigned char dfw:1; /* DASD fast write */
128 } __attribute__ ((packed)) attributes;
129 __u16 blk_size; /* Blocksize */
131 __u8 ga_additional; /* Global Attributes Additional */
132 __u8 ga_extended; /* Global Attributes Extended */
135 unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
136 __u8 ep_format; /* Extended Parameter format byte */
137 __u8 ep_prio; /* Extended Parameter priority I/O byte */
138 __u8 ep_reserved1; /* Extended Parameter Reserved */
139 __u8 ep_rec_per_track; /* Number of records on a track */
140 __u8 ep_reserved[4]; /* Extended Parameter Reserved */
141 } __attribute__ ((packed));
143 struct LO_eckd_data {
145 unsigned char orientation:2;
146 unsigned char operation:6;
147 } __attribute__ ((packed)) operation;
149 unsigned char last_bytes_used:1;
150 unsigned char reserved:6;
151 unsigned char read_count_suffix:1;
152 } __attribute__ ((packed)) auxiliary;
155 struct ch_t seek_addr;
156 struct chr_t search_arg;
159 } __attribute__ ((packed));
161 struct LRE_eckd_data {
163 unsigned char orientation:2;
164 unsigned char operation:6;
165 } __attribute__ ((packed)) operation;
167 unsigned char length_valid:1;
168 unsigned char length_scope:1;
169 unsigned char imbedded_ccw_valid:1;
170 unsigned char check_bytes:2;
171 unsigned char imbedded_count_valid:1;
172 unsigned char reserved:1;
173 unsigned char read_count_suffix:1;
174 } __attribute__ ((packed)) auxiliary;
177 struct ch_t seek_addr;
178 struct chr_t search_arg;
182 __u8 extended_operation;
183 __u16 extended_parameter_length;
184 __u8 extended_parameter[0];
185 } __attribute__ ((packed));
187 /* Prefix data for format 0x00 and 0x01 */
188 struct PFX_eckd_data {
189 unsigned char format;
191 unsigned char define_extent:1;
192 unsigned char time_stamp:1;
193 unsigned char verify_base:1;
194 unsigned char hyper_pav:1;
195 unsigned char reserved:4;
196 } __attribute__ ((packed)) validity;
201 struct DE_eckd_data define_extent;
202 struct LRE_eckd_data locate_record;
203 } __attribute__ ((packed));
205 struct dasd_eckd_characteristics {
208 unsigned char support:2;
209 unsigned char async:1;
210 unsigned char reserved:1;
211 unsigned char cache_info:1;
212 unsigned char model:3;
213 } __attribute__ ((packed)) cu_model;
217 unsigned char mult_burst:1;
218 unsigned char RT_in_LR:1;
219 unsigned char reserved1:1;
220 unsigned char RD_IN_LR:1;
221 unsigned char reserved2:4;
222 unsigned char reserved3:8;
223 unsigned char defect_wr:1;
224 unsigned char XRC_supported:1;
225 unsigned char reserved4:1;
226 unsigned char striping:1;
227 unsigned char reserved5:4;
229 unsigned char reserved6:2;
230 unsigned char cache:1;
231 unsigned char dual_copy:1;
233 unsigned char reset_alleg:1;
234 unsigned char sense_down:1;
235 } __attribute__ ((packed)) facilities;
241 __u8 byte_per_track[3];
249 } __attribute__ ((packed)) f_0x01;
256 } __attribute__ ((packed)) f_0x02;
257 } __attribute__ ((packed)) factors;
277 } __attribute__ ((packed));
279 /* elements of the configuration data */
289 } __attribute__ ((packed)) flags;
295 __u8 HDA_manufacturer[3];
296 __u8 HDA_location[2];
300 } __attribute__ ((packed));
306 } __attribute__ ((packed)) flags;
309 __u8 res2[4]; /* byte 4- 7 */
310 __u8 sua_flags; /* byte 8 */
311 __u8 base_unit_addr; /* byte 9 */
312 __u8 res3[22]; /* byte 10-31 */
313 } __attribute__ ((packed));
319 } __attribute__ ((packed)) flags;
322 __u8 res2[4]; /* byte 4- 7 */
323 __u8 uit[16]; /* byte 8-23 */
324 __u8 res3[8]; /* byte 24-31 */
325 } __attribute__ ((packed));
331 } __attribute__ ((packed)) flags;
336 } __attribute__ ((packed)) timeout;
340 } __attribute__ ((packed));
342 struct dasd_rssd_features {
344 } __attribute__((packed));
348 * Perform Subsystem Function - Prepare for Read Subsystem Data
350 struct dasd_psf_prssd_data {
353 unsigned char reserved[4];
354 unsigned char suborder;
355 unsigned char varies[5];
356 } __attribute__ ((packed));
359 * Perform Subsystem Function - Set Subsystem Characteristics
361 struct dasd_psf_ssc_data {
364 unsigned char cu_type[4];
365 unsigned char suborder;
366 unsigned char reserved[59];
367 } __attribute__((packed));
371 * some structures and definitions for alias handling
373 struct dasd_unit_address_configuration {
378 } __attribute__((packed));
381 #define MAX_DEVICES_PER_LCU 256
383 /* flags on the LCU */
384 #define NEED_UAC_UPDATE 0x01
385 #define UPDATE_PENDING 0x02
387 enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
391 struct list_head serverlist;
395 struct alias_server {
396 struct list_head server;
398 struct list_head lculist;
401 struct summary_unit_check_work_data {
403 struct dasd_device *device;
404 struct work_struct worker;
407 struct read_uac_work_data {
408 struct dasd_device *device;
409 struct delayed_work dwork;
413 struct list_head lcu;
418 struct list_head grouplist;
419 struct list_head active_devices;
420 struct list_head inactive_devices;
421 struct dasd_unit_address_configuration *uac;
422 struct summary_unit_check_work_data suc_data;
423 struct read_uac_work_data ruac_data;
424 struct dasd_ccw_req *rsu_cqr;
425 struct completion lcu_setup;
428 struct alias_pav_group {
429 struct list_head group;
431 struct alias_lcu *lcu;
432 struct list_head baselist;
433 struct list_head aliaslist;
434 struct dasd_device *next;
437 struct dasd_eckd_private {
438 struct dasd_eckd_characteristics rdc_data;
441 /* pointers to specific parts in the conf_data */
442 struct dasd_ned *ned;
443 struct dasd_sneq *sneq;
444 struct vd_sneq *vdsneq;
445 struct dasd_gneq *gneq;
447 struct eckd_count count_area[5];
450 struct attrib_data_t attrib; /* e.g. cache operations */
451 struct dasd_rssd_features features;
454 /* alias managemnet */
456 struct alias_pav_group *pavgroup;
457 struct alias_lcu *lcu;
465 int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
466 void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
467 int dasd_alias_add_device(struct dasd_device *);
468 int dasd_alias_remove_device(struct dasd_device *);
469 struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
470 void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
471 void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
472 void dasd_alias_lcu_setup_complete(struct dasd_device *);
473 void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
474 int dasd_alias_update_add_device(struct dasd_device *);
475 #endif /* DASD_ECKD_H */