blob: f738d2827582e01408559acf690cf49399d72ddf [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * include/asm-s390/cio.h
3 * include/asm-s390x/cio.h
4 *
5 * Common interface for I/O on S/390
6 */
7#ifndef _ASM_S390_CIO_H_
8#define _ASM_S390_CIO_H_
9
10#include <linux/spinlock.h>
11#include <asm/types.h>
12
13#ifdef __KERNEL__
14
15#define LPM_ANYPATH 0xff
Peter Oberparleitere5854a52007-04-27 16:01:31 +020016#define __MAX_CSSID 0
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
18/*
19 * subchannel status word
20 */
21struct scsw {
22 __u32 key : 4; /* subchannel key */
23 __u32 sctl : 1; /* suspend control */
24 __u32 eswf : 1; /* ESW format */
25 __u32 cc : 2; /* deferred condition code */
26 __u32 fmt : 1; /* format */
27 __u32 pfch : 1; /* prefetch */
28 __u32 isic : 1; /* initial-status interruption control */
29 __u32 alcc : 1; /* address-limit checking control */
30 __u32 ssi : 1; /* supress-suspended interruption */
31 __u32 zcc : 1; /* zero condition code */
32 __u32 ectl : 1; /* extended control */
33 __u32 pno : 1; /* path not operational */
34 __u32 res : 1; /* reserved */
35 __u32 fctl : 3; /* function control */
36 __u32 actl : 7; /* activity control */
37 __u32 stctl : 5; /* status control */
38 __u32 cpa; /* channel program address */
39 __u32 dstat : 8; /* device status */
40 __u32 cstat : 8; /* subchannel status */
41 __u32 count : 16; /* residual count */
42} __attribute__ ((packed));
43
44#define SCSW_FCTL_CLEAR_FUNC 0x1
45#define SCSW_FCTL_HALT_FUNC 0x2
46#define SCSW_FCTL_START_FUNC 0x4
47
48#define SCSW_ACTL_SUSPENDED 0x1
49#define SCSW_ACTL_DEVACT 0x2
50#define SCSW_ACTL_SCHACT 0x4
51#define SCSW_ACTL_CLEAR_PEND 0x8
52#define SCSW_ACTL_HALT_PEND 0x10
53#define SCSW_ACTL_START_PEND 0x20
54#define SCSW_ACTL_RESUME_PEND 0x40
55
56#define SCSW_STCTL_STATUS_PEND 0x1
57#define SCSW_STCTL_SEC_STATUS 0x2
58#define SCSW_STCTL_PRIM_STATUS 0x4
59#define SCSW_STCTL_INTER_STATUS 0x8
60#define SCSW_STCTL_ALERT_STATUS 0x10
61
62#define DEV_STAT_ATTENTION 0x80
63#define DEV_STAT_STAT_MOD 0x40
64#define DEV_STAT_CU_END 0x20
65#define DEV_STAT_BUSY 0x10
66#define DEV_STAT_CHN_END 0x08
67#define DEV_STAT_DEV_END 0x04
68#define DEV_STAT_UNIT_CHECK 0x02
69#define DEV_STAT_UNIT_EXCEP 0x01
70
71#define SCHN_STAT_PCI 0x80
72#define SCHN_STAT_INCORR_LEN 0x40
73#define SCHN_STAT_PROG_CHECK 0x20
74#define SCHN_STAT_PROT_CHECK 0x10
75#define SCHN_STAT_CHN_DATA_CHK 0x08
76#define SCHN_STAT_CHN_CTRL_CHK 0x04
77#define SCHN_STAT_INTF_CTRL_CHK 0x02
78#define SCHN_STAT_CHAIN_CHECK 0x01
79
80/*
81 * architectured values for first sense byte
82 */
83#define SNS0_CMD_REJECT 0x80
84#define SNS_CMD_REJECT SNS0_CMD_REJEC
85#define SNS0_INTERVENTION_REQ 0x40
86#define SNS0_BUS_OUT_CHECK 0x20
87#define SNS0_EQUIPMENT_CHECK 0x10
88#define SNS0_DATA_CHECK 0x08
89#define SNS0_OVERRUN 0x04
90#define SNS0_INCOMPL_DOMAIN 0x01
91
92/*
93 * architectured values for second sense byte
94 */
95#define SNS1_PERM_ERR 0x80
96#define SNS1_INV_TRACK_FORMAT 0x40
97#define SNS1_EOC 0x20
98#define SNS1_MESSAGE_TO_OPER 0x10
99#define SNS1_NO_REC_FOUND 0x08
100#define SNS1_FILE_PROTECTED 0x04
101#define SNS1_WRITE_INHIBITED 0x02
102#define SNS1_INPRECISE_END 0x01
103
104/*
105 * architectured values for third sense byte
106 */
107#define SNS2_REQ_INH_WRITE 0x80
108#define SNS2_CORRECTABLE 0x40
109#define SNS2_FIRST_LOG_ERR 0x20
110#define SNS2_ENV_DATA_PRESENT 0x10
111#define SNS2_INPRECISE_END 0x04
112
113struct ccw1 {
114 __u8 cmd_code; /* command code */
115 __u8 flags; /* flags, like IDA addressing, etc. */
116 __u16 count; /* byte count */
117 __u32 cda; /* data address */
118} __attribute__ ((packed,aligned(8)));
119
120#define CCW_FLAG_DC 0x80
121#define CCW_FLAG_CC 0x40
122#define CCW_FLAG_SLI 0x20
123#define CCW_FLAG_SKIP 0x10
124#define CCW_FLAG_PCI 0x08
125#define CCW_FLAG_IDA 0x04
126#define CCW_FLAG_SUSPEND 0x02
127
128#define CCW_CMD_READ_IPL 0x02
129#define CCW_CMD_NOOP 0x03
130#define CCW_CMD_BASIC_SENSE 0x04
131#define CCW_CMD_TIC 0x08
132#define CCW_CMD_STLCK 0x14
133#define CCW_CMD_SENSE_PGID 0x34
134#define CCW_CMD_SUSPEND_RECONN 0x5B
135#define CCW_CMD_RDC 0x64
136#define CCW_CMD_RELEASE 0x94
137#define CCW_CMD_SET_PGID 0xAF
138#define CCW_CMD_SENSE_ID 0xE4
139#define CCW_CMD_DCTL 0xF3
140
141#define SENSE_MAX_COUNT 0x20
142
143struct erw {
144 __u32 res0 : 3; /* reserved */
145 __u32 auth : 1; /* Authorization check */
146 __u32 pvrf : 1; /* path-verification-required flag */
147 __u32 cpt : 1; /* channel-path timeout */
148 __u32 fsavf : 1; /* Failing storage address validity flag */
149 __u32 cons : 1; /* concurrent-sense */
150 __u32 scavf : 1; /* Secondary ccw address validity flag */
151 __u32 fsaf : 1; /* Failing storage address format */
152 __u32 scnt : 6; /* sense count if cons == 1 */
153 __u32 res16 : 16; /* reserved */
154} __attribute__ ((packed));
155
156/*
157 * subchannel logout area
158 */
159struct sublog {
160 __u32 res0 : 1; /* reserved */
161 __u32 esf : 7; /* extended status flags */
162 __u32 lpum : 8; /* last path used mask */
163 __u32 arep : 1; /* ancillary report */
164 __u32 fvf : 5; /* field-validity flags */
165 __u32 sacc : 2; /* storage access code */
166 __u32 termc : 2; /* termination code */
167 __u32 devsc : 1; /* device-status check */
168 __u32 serr : 1; /* secondary error */
169 __u32 ioerr : 1; /* i/o-error alert */
170 __u32 seqc : 3; /* sequence code */
171} __attribute__ ((packed));
172
173/*
174 * Format 0 Extended Status Word (ESW)
175 */
176struct esw0 {
177 struct sublog sublog; /* subchannel logout */
178 struct erw erw; /* extended report word */
179 __u32 faddr[2]; /* failing storage address */
180 __u32 saddr; /* secondary ccw address */
181} __attribute__ ((packed));
182
183/*
184 * Format 1 Extended Status Word (ESW)
185 */
186struct esw1 {
187 __u8 zero0; /* reserved zeros */
188 __u8 lpum; /* last path used mask */
189 __u16 zero16; /* reserved zeros */
190 struct erw erw; /* extended report word */
191 __u32 zeros[3]; /* 2 fullwords of zeros */
192} __attribute__ ((packed));
193
194/*
195 * Format 2 Extended Status Word (ESW)
196 */
197struct esw2 {
198 __u8 zero0; /* reserved zeros */
199 __u8 lpum; /* last path used mask */
200 __u16 dcti; /* device-connect-time interval */
201 struct erw erw; /* extended report word */
202 __u32 zeros[3]; /* 2 fullwords of zeros */
203} __attribute__ ((packed));
204
205/*
206 * Format 3 Extended Status Word (ESW)
207 */
208struct esw3 {
209 __u8 zero0; /* reserved zeros */
210 __u8 lpum; /* last path used mask */
211 __u16 res; /* reserved */
212 struct erw erw; /* extended report word */
213 __u32 zeros[3]; /* 2 fullwords of zeros */
214} __attribute__ ((packed));
215
216/*
217 * interruption response block
218 */
219struct irb {
220 struct scsw scsw; /* subchannel status word */
221 union { /* extended status word, 4 formats */
222 struct esw0 esw0;
223 struct esw1 esw1;
224 struct esw2 esw2;
225 struct esw3 esw3;
226 } esw;
227 __u8 ecw[32]; /* extended control word */
228} __attribute__ ((packed,aligned(4)));
229
230/*
231 * command information word (CIW) layout
232 */
233struct ciw {
234 __u32 et : 2; /* entry type */
235 __u32 reserved : 2; /* reserved */
236 __u32 ct : 4; /* command type */
237 __u32 cmd : 8; /* command */
238 __u32 count : 16; /* coun */
239} __attribute__ ((packed));
240
241#define CIW_TYPE_RCD 0x0 /* read configuration data */
242#define CIW_TYPE_SII 0x1 /* set interface identifier */
243#define CIW_TYPE_RNI 0x2 /* read node identifier */
244
245/*
246 * Flags used as input parameters for do_IO()
247 */
248#define DOIO_ALLOW_SUSPEND 0x0001 /* allow for channel prog. suspend */
249#define DOIO_DENY_PREFETCH 0x0002 /* don't allow for CCW prefetch */
250#define DOIO_SUPPRESS_INTER 0x0004 /* suppress intermediate inter. */
251 /* ... for suspended CCWs */
252/* Device or subchannel gone. */
253#define CIO_GONE 0x0001
254/* No path to device. */
255#define CIO_NO_PATH 0x0002
256/* Device has appeared. */
257#define CIO_OPER 0x0004
258/* Sick revalidation of device. */
259#define CIO_REVALIDATE 0x0008
260
261struct diag210 {
262 __u16 vrdcdvno : 16; /* device number (input) */
263 __u16 vrdclen : 16; /* data block length (input) */
264 __u32 vrdcvcla : 8; /* virtual device class (output) */
265 __u32 vrdcvtyp : 8; /* virtual device type (output) */
266 __u32 vrdcvsta : 8; /* virtual device status (output) */
267 __u32 vrdcvfla : 8; /* virtual device flags (output) */
268 __u32 vrdcrccl : 8; /* real device class (output) */
269 __u32 vrdccrty : 8; /* real device type (output) */
270 __u32 vrdccrmd : 8; /* real device model (output) */
271 __u32 vrdccrft : 8; /* real device feature (output) */
272} __attribute__ ((packed,aligned(4)));
273
Michael Holzheuff6b8ea2006-09-20 15:58:49 +0200274struct ccw_dev_id {
275 u8 ssid;
276 u16 devno;
277};
278
Cornelia Huck78964262006-10-11 15:31:38 +0200279static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1,
280 struct ccw_dev_id *dev_id2)
281{
Cornelia Huckce26a852006-12-04 15:40:54 +0100282 if ((dev_id1->ssid == dev_id2->ssid) &&
283 (dev_id1->devno == dev_id2->devno))
284 return 1;
285 return 0;
Cornelia Huck78964262006-10-11 15:31:38 +0200286}
287
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288extern int diag210(struct diag210 *addr);
289
290extern void wait_cons_dev(void);
291
Peter Oberparleiter40154b82006-06-29 14:57:03 +0200292extern void css_schedule_reprobe(void);
293
Michael Holzheuff6b8ea2006-09-20 15:58:49 +0200294extern void reipl_ccw_dev(struct ccw_dev_id *id);
295
Heiko Carstens6fc321f2007-04-27 16:01:25 +0200296struct cio_iplinfo {
297 u16 devno;
298 int is_qdio;
299};
300
301extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo);
302
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303#endif
304
305#endif