Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Peter Oberparleiter | e5854a5 | 2007-04-27 16:01:31 +0200 | [diff] [blame] | 16 | #define __MAX_CSSID 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
| 18 | /* |
| 19 | * subchannel status word |
| 20 | */ |
| 21 | struct 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 | |
| 113 | struct 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 | |
| 143 | struct 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 | */ |
| 159 | struct 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 | */ |
| 176 | struct 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 | */ |
| 186 | struct 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 | */ |
| 197 | struct 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 | */ |
| 208 | struct 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 | */ |
| 219 | struct 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 | */ |
| 233 | struct 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 | |
| 261 | struct 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 Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 274 | struct ccw_dev_id { |
| 275 | u8 ssid; |
| 276 | u16 devno; |
| 277 | }; |
| 278 | |
Cornelia Huck | 7896426 | 2006-10-11 15:31:38 +0200 | [diff] [blame] | 279 | static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1, |
| 280 | struct ccw_dev_id *dev_id2) |
| 281 | { |
Cornelia Huck | ce26a85 | 2006-12-04 15:40:54 +0100 | [diff] [blame] | 282 | if ((dev_id1->ssid == dev_id2->ssid) && |
| 283 | (dev_id1->devno == dev_id2->devno)) |
| 284 | return 1; |
| 285 | return 0; |
Cornelia Huck | 7896426 | 2006-10-11 15:31:38 +0200 | [diff] [blame] | 286 | } |
| 287 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | extern int diag210(struct diag210 *addr); |
| 289 | |
| 290 | extern void wait_cons_dev(void); |
| 291 | |
Peter Oberparleiter | 40154b8 | 2006-06-29 14:57:03 +0200 | [diff] [blame] | 292 | extern void css_schedule_reprobe(void); |
| 293 | |
Michael Holzheu | ff6b8ea | 2006-09-20 15:58:49 +0200 | [diff] [blame] | 294 | extern void reipl_ccw_dev(struct ccw_dev_id *id); |
| 295 | |
Heiko Carstens | 6fc321f | 2007-04-27 16:01:25 +0200 | [diff] [blame] | 296 | struct cio_iplinfo { |
| 297 | u16 devno; |
| 298 | int is_qdio; |
| 299 | }; |
| 300 | |
| 301 | extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo); |
| 302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | #endif |
| 304 | |
| 305 | #endif |