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1da177e4 LT |
1 | /* |
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 | |
16 | ||
17 | /* | |
18 | * subchannel status word | |
19 | */ | |
20 | struct scsw { | |
21 | __u32 key : 4; /* subchannel key */ | |
22 | __u32 sctl : 1; /* suspend control */ | |
23 | __u32 eswf : 1; /* ESW format */ | |
24 | __u32 cc : 2; /* deferred condition code */ | |
25 | __u32 fmt : 1; /* format */ | |
26 | __u32 pfch : 1; /* prefetch */ | |
27 | __u32 isic : 1; /* initial-status interruption control */ | |
28 | __u32 alcc : 1; /* address-limit checking control */ | |
29 | __u32 ssi : 1; /* supress-suspended interruption */ | |
30 | __u32 zcc : 1; /* zero condition code */ | |
31 | __u32 ectl : 1; /* extended control */ | |
32 | __u32 pno : 1; /* path not operational */ | |
33 | __u32 res : 1; /* reserved */ | |
34 | __u32 fctl : 3; /* function control */ | |
35 | __u32 actl : 7; /* activity control */ | |
36 | __u32 stctl : 5; /* status control */ | |
37 | __u32 cpa; /* channel program address */ | |
38 | __u32 dstat : 8; /* device status */ | |
39 | __u32 cstat : 8; /* subchannel status */ | |
40 | __u32 count : 16; /* residual count */ | |
41 | } __attribute__ ((packed)); | |
42 | ||
43 | #define SCSW_FCTL_CLEAR_FUNC 0x1 | |
44 | #define SCSW_FCTL_HALT_FUNC 0x2 | |
45 | #define SCSW_FCTL_START_FUNC 0x4 | |
46 | ||
47 | #define SCSW_ACTL_SUSPENDED 0x1 | |
48 | #define SCSW_ACTL_DEVACT 0x2 | |
49 | #define SCSW_ACTL_SCHACT 0x4 | |
50 | #define SCSW_ACTL_CLEAR_PEND 0x8 | |
51 | #define SCSW_ACTL_HALT_PEND 0x10 | |
52 | #define SCSW_ACTL_START_PEND 0x20 | |
53 | #define SCSW_ACTL_RESUME_PEND 0x40 | |
54 | ||
55 | #define SCSW_STCTL_STATUS_PEND 0x1 | |
56 | #define SCSW_STCTL_SEC_STATUS 0x2 | |
57 | #define SCSW_STCTL_PRIM_STATUS 0x4 | |
58 | #define SCSW_STCTL_INTER_STATUS 0x8 | |
59 | #define SCSW_STCTL_ALERT_STATUS 0x10 | |
60 | ||
61 | #define DEV_STAT_ATTENTION 0x80 | |
62 | #define DEV_STAT_STAT_MOD 0x40 | |
63 | #define DEV_STAT_CU_END 0x20 | |
64 | #define DEV_STAT_BUSY 0x10 | |
65 | #define DEV_STAT_CHN_END 0x08 | |
66 | #define DEV_STAT_DEV_END 0x04 | |
67 | #define DEV_STAT_UNIT_CHECK 0x02 | |
68 | #define DEV_STAT_UNIT_EXCEP 0x01 | |
69 | ||
70 | #define SCHN_STAT_PCI 0x80 | |
71 | #define SCHN_STAT_INCORR_LEN 0x40 | |
72 | #define SCHN_STAT_PROG_CHECK 0x20 | |
73 | #define SCHN_STAT_PROT_CHECK 0x10 | |
74 | #define SCHN_STAT_CHN_DATA_CHK 0x08 | |
75 | #define SCHN_STAT_CHN_CTRL_CHK 0x04 | |
76 | #define SCHN_STAT_INTF_CTRL_CHK 0x02 | |
77 | #define SCHN_STAT_CHAIN_CHECK 0x01 | |
78 | ||
79 | /* | |
80 | * architectured values for first sense byte | |
81 | */ | |
82 | #define SNS0_CMD_REJECT 0x80 | |
83 | #define SNS_CMD_REJECT SNS0_CMD_REJEC | |
84 | #define SNS0_INTERVENTION_REQ 0x40 | |
85 | #define SNS0_BUS_OUT_CHECK 0x20 | |
86 | #define SNS0_EQUIPMENT_CHECK 0x10 | |
87 | #define SNS0_DATA_CHECK 0x08 | |
88 | #define SNS0_OVERRUN 0x04 | |
89 | #define SNS0_INCOMPL_DOMAIN 0x01 | |
90 | ||
91 | /* | |
92 | * architectured values for second sense byte | |
93 | */ | |
94 | #define SNS1_PERM_ERR 0x80 | |
95 | #define SNS1_INV_TRACK_FORMAT 0x40 | |
96 | #define SNS1_EOC 0x20 | |
97 | #define SNS1_MESSAGE_TO_OPER 0x10 | |
98 | #define SNS1_NO_REC_FOUND 0x08 | |
99 | #define SNS1_FILE_PROTECTED 0x04 | |
100 | #define SNS1_WRITE_INHIBITED 0x02 | |
101 | #define SNS1_INPRECISE_END 0x01 | |
102 | ||
103 | /* | |
104 | * architectured values for third sense byte | |
105 | */ | |
106 | #define SNS2_REQ_INH_WRITE 0x80 | |
107 | #define SNS2_CORRECTABLE 0x40 | |
108 | #define SNS2_FIRST_LOG_ERR 0x20 | |
109 | #define SNS2_ENV_DATA_PRESENT 0x10 | |
110 | #define SNS2_INPRECISE_END 0x04 | |
111 | ||
112 | struct ccw1 { | |
113 | __u8 cmd_code; /* command code */ | |
114 | __u8 flags; /* flags, like IDA addressing, etc. */ | |
115 | __u16 count; /* byte count */ | |
116 | __u32 cda; /* data address */ | |
117 | } __attribute__ ((packed,aligned(8))); | |
118 | ||
119 | #define CCW_FLAG_DC 0x80 | |
120 | #define CCW_FLAG_CC 0x40 | |
121 | #define CCW_FLAG_SLI 0x20 | |
122 | #define CCW_FLAG_SKIP 0x10 | |
123 | #define CCW_FLAG_PCI 0x08 | |
124 | #define CCW_FLAG_IDA 0x04 | |
125 | #define CCW_FLAG_SUSPEND 0x02 | |
126 | ||
127 | #define CCW_CMD_READ_IPL 0x02 | |
128 | #define CCW_CMD_NOOP 0x03 | |
129 | #define CCW_CMD_BASIC_SENSE 0x04 | |
130 | #define CCW_CMD_TIC 0x08 | |
131 | #define CCW_CMD_STLCK 0x14 | |
132 | #define CCW_CMD_SENSE_PGID 0x34 | |
133 | #define CCW_CMD_SUSPEND_RECONN 0x5B | |
134 | #define CCW_CMD_RDC 0x64 | |
135 | #define CCW_CMD_RELEASE 0x94 | |
136 | #define CCW_CMD_SET_PGID 0xAF | |
137 | #define CCW_CMD_SENSE_ID 0xE4 | |
138 | #define CCW_CMD_DCTL 0xF3 | |
139 | ||
140 | #define SENSE_MAX_COUNT 0x20 | |
141 | ||
142 | struct erw { | |
143 | __u32 res0 : 3; /* reserved */ | |
144 | __u32 auth : 1; /* Authorization check */ | |
145 | __u32 pvrf : 1; /* path-verification-required flag */ | |
146 | __u32 cpt : 1; /* channel-path timeout */ | |
147 | __u32 fsavf : 1; /* Failing storage address validity flag */ | |
148 | __u32 cons : 1; /* concurrent-sense */ | |
149 | __u32 scavf : 1; /* Secondary ccw address validity flag */ | |
150 | __u32 fsaf : 1; /* Failing storage address format */ | |
151 | __u32 scnt : 6; /* sense count if cons == 1 */ | |
152 | __u32 res16 : 16; /* reserved */ | |
153 | } __attribute__ ((packed)); | |
154 | ||
155 | /* | |
156 | * subchannel logout area | |
157 | */ | |
158 | struct sublog { | |
159 | __u32 res0 : 1; /* reserved */ | |
160 | __u32 esf : 7; /* extended status flags */ | |
161 | __u32 lpum : 8; /* last path used mask */ | |
162 | __u32 arep : 1; /* ancillary report */ | |
163 | __u32 fvf : 5; /* field-validity flags */ | |
164 | __u32 sacc : 2; /* storage access code */ | |
165 | __u32 termc : 2; /* termination code */ | |
166 | __u32 devsc : 1; /* device-status check */ | |
167 | __u32 serr : 1; /* secondary error */ | |
168 | __u32 ioerr : 1; /* i/o-error alert */ | |
169 | __u32 seqc : 3; /* sequence code */ | |
170 | } __attribute__ ((packed)); | |
171 | ||
172 | /* | |
173 | * Format 0 Extended Status Word (ESW) | |
174 | */ | |
175 | struct esw0 { | |
176 | struct sublog sublog; /* subchannel logout */ | |
177 | struct erw erw; /* extended report word */ | |
178 | __u32 faddr[2]; /* failing storage address */ | |
179 | __u32 saddr; /* secondary ccw address */ | |
180 | } __attribute__ ((packed)); | |
181 | ||
182 | /* | |
183 | * Format 1 Extended Status Word (ESW) | |
184 | */ | |
185 | struct esw1 { | |
186 | __u8 zero0; /* reserved zeros */ | |
187 | __u8 lpum; /* last path used mask */ | |
188 | __u16 zero16; /* reserved zeros */ | |
189 | struct erw erw; /* extended report word */ | |
190 | __u32 zeros[3]; /* 2 fullwords of zeros */ | |
191 | } __attribute__ ((packed)); | |
192 | ||
193 | /* | |
194 | * Format 2 Extended Status Word (ESW) | |
195 | */ | |
196 | struct esw2 { | |
197 | __u8 zero0; /* reserved zeros */ | |
198 | __u8 lpum; /* last path used mask */ | |
199 | __u16 dcti; /* device-connect-time interval */ | |
200 | struct erw erw; /* extended report word */ | |
201 | __u32 zeros[3]; /* 2 fullwords of zeros */ | |
202 | } __attribute__ ((packed)); | |
203 | ||
204 | /* | |
205 | * Format 3 Extended Status Word (ESW) | |
206 | */ | |
207 | struct esw3 { | |
208 | __u8 zero0; /* reserved zeros */ | |
209 | __u8 lpum; /* last path used mask */ | |
210 | __u16 res; /* reserved */ | |
211 | struct erw erw; /* extended report word */ | |
212 | __u32 zeros[3]; /* 2 fullwords of zeros */ | |
213 | } __attribute__ ((packed)); | |
214 | ||
215 | /* | |
216 | * interruption response block | |
217 | */ | |
218 | struct irb { | |
219 | struct scsw scsw; /* subchannel status word */ | |
220 | union { /* extended status word, 4 formats */ | |
221 | struct esw0 esw0; | |
222 | struct esw1 esw1; | |
223 | struct esw2 esw2; | |
224 | struct esw3 esw3; | |
225 | } esw; | |
226 | __u8 ecw[32]; /* extended control word */ | |
227 | } __attribute__ ((packed,aligned(4))); | |
228 | ||
229 | /* | |
230 | * command information word (CIW) layout | |
231 | */ | |
232 | struct ciw { | |
233 | __u32 et : 2; /* entry type */ | |
234 | __u32 reserved : 2; /* reserved */ | |
235 | __u32 ct : 4; /* command type */ | |
236 | __u32 cmd : 8; /* command */ | |
237 | __u32 count : 16; /* coun */ | |
238 | } __attribute__ ((packed)); | |
239 | ||
240 | #define CIW_TYPE_RCD 0x0 /* read configuration data */ | |
241 | #define CIW_TYPE_SII 0x1 /* set interface identifier */ | |
242 | #define CIW_TYPE_RNI 0x2 /* read node identifier */ | |
243 | ||
244 | /* | |
245 | * Flags used as input parameters for do_IO() | |
246 | */ | |
247 | #define DOIO_ALLOW_SUSPEND 0x0001 /* allow for channel prog. suspend */ | |
248 | #define DOIO_DENY_PREFETCH 0x0002 /* don't allow for CCW prefetch */ | |
249 | #define DOIO_SUPPRESS_INTER 0x0004 /* suppress intermediate inter. */ | |
250 | /* ... for suspended CCWs */ | |
251 | /* Device or subchannel gone. */ | |
252 | #define CIO_GONE 0x0001 | |
253 | /* No path to device. */ | |
254 | #define CIO_NO_PATH 0x0002 | |
255 | /* Device has appeared. */ | |
256 | #define CIO_OPER 0x0004 | |
257 | /* Sick revalidation of device. */ | |
258 | #define CIO_REVALIDATE 0x0008 | |
259 | ||
260 | struct diag210 { | |
261 | __u16 vrdcdvno : 16; /* device number (input) */ | |
262 | __u16 vrdclen : 16; /* data block length (input) */ | |
263 | __u32 vrdcvcla : 8; /* virtual device class (output) */ | |
264 | __u32 vrdcvtyp : 8; /* virtual device type (output) */ | |
265 | __u32 vrdcvsta : 8; /* virtual device status (output) */ | |
266 | __u32 vrdcvfla : 8; /* virtual device flags (output) */ | |
267 | __u32 vrdcrccl : 8; /* real device class (output) */ | |
268 | __u32 vrdccrty : 8; /* real device type (output) */ | |
269 | __u32 vrdccrmd : 8; /* real device model (output) */ | |
270 | __u32 vrdccrft : 8; /* real device feature (output) */ | |
271 | } __attribute__ ((packed,aligned(4))); | |
272 | ||
ff6b8ea6 MH |
273 | struct ccw_dev_id { |
274 | u8 ssid; | |
275 | u16 devno; | |
276 | }; | |
277 | ||
78964268 CH |
278 | static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1, |
279 | struct ccw_dev_id *dev_id2) | |
280 | { | |
281 | return !memcmp(dev_id1, dev_id2, sizeof(struct ccw_dev_id)); | |
282 | } | |
283 | ||
1da177e4 LT |
284 | extern int diag210(struct diag210 *addr); |
285 | ||
286 | extern void wait_cons_dev(void); | |
287 | ||
40154b82 PO |
288 | extern void css_schedule_reprobe(void); |
289 | ||
ff6b8ea6 MH |
290 | extern void reipl_ccw_dev(struct ccw_dev_id *id); |
291 | ||
1da177e4 LT |
292 | #endif |
293 | ||
294 | #endif |