1#ifndef _ASM_IRQ_H 2#define _ASM_IRQ_H 3 4#include <linux/config.h> 5#ifdef __KERNEL__ 6#include <asm/hardirq.h> 7 8/* 9 * How many IRQ's for S390 ?!? 10 */ 11#define __MAX_SUBCHANNELS 65536 12#define NR_IRQS __MAX_SUBCHANNELS 13#define NR_CHPIDS 256 14 15#define LPM_ANYPATH 0xff /* doesn't really belong here, Ingo? */ 16 17#define INVALID_STORAGE_AREA ((void *)(-1 - 0x3FFF )) 18 19extern int disable_irq(unsigned int); 20extern int enable_irq(unsigned int); 21 22/* 23 * path management control word 24 */ 25typedef struct { 26 __u32 intparm; /* interruption parameter */ 27 __u32 qf : 1; /* qdio facility */ 28 __u32 res0 : 1; /* reserved zeros */ 29 __u32 isc : 3; /* interruption sublass */ 30 __u32 res5 : 3; /* reserved zeros */ 31 __u32 ena : 1; /* enabled */ 32 __u32 lm : 2; /* limit mode */ 33 __u32 mme : 2; /* measurement-mode enable */ 34 __u32 mp : 1; /* multipath mode */ 35 __u32 tf : 1; /* timing facility */ 36 __u32 dnv : 1; /* device number valid */ 37 __u32 dev : 16; /* device number */ 38 __u8 lpm; /* logical path mask */ 39 __u8 pnom; /* path not operational mask */ 40 __u8 lpum; /* last path used mask */ 41 __u8 pim; /* path installed mask */ 42 __u16 mbi; /* measurement-block index */ 43 __u8 pom; /* path operational mask */ 44 __u8 pam; /* path available mask */ 45 __u8 chpid[8]; /* CHPID 0-7 (if available) */ 46 __u32 unused1 : 8; /* reserved zeros */ 47 __u32 st : 3; /* subchannel type */ 48 __u32 unused2 : 20; /* reserved zeros */ 49 __u32 csense : 1; /* concurrent sense; can be enabled ...*/ 50 /* ... per MSCH, however, if facility */ 51 /* ... is not installed, this results */ 52 /* ... in an operand exception. */ 53 } __attribute__ ((packed)) pmcw_t; 54 55#endif /* __KERNEL__ */ 56/* 57 * subchannel status word 58 */ 59typedef struct { 60 __u32 key : 4; /* subchannel key */ 61 __u32 sctl : 1; /* suspend control */ 62 __u32 eswf : 1; /* ESW format */ 63 __u32 cc : 2; /* deferred condition code */ 64 __u32 fmt : 1; /* format */ 65 __u32 pfch : 1; /* prefetch */ 66 __u32 isic : 1; /* initial-status interruption control */ 67 __u32 alcc : 1; /* address-limit checking control */ 68 __u32 ssi : 1; /* supress-suspended interruption */ 69 __u32 zcc : 1; /* zero condition code */ 70 __u32 ectl : 1; /* extended control */ 71 __u32 pno : 1; /* path not operational */ 72 __u32 res : 1; /* reserved */ 73 __u32 fctl : 3; /* function control */ 74 __u32 actl : 7; /* activity control */ 75 __u32 stctl : 5; /* status control */ 76 __u32 cpa; /* channel program address */ 77 __u32 dstat : 8; /* device status */ 78 __u32 cstat : 8; /* subchannel status */ 79 __u32 count : 16; /* residual count */ 80 } __attribute__ ((packed)) scsw_t; 81 82#define SCSW_FCTL_CLEAR_FUNC 0x1 83#define SCSW_FCTL_HALT_FUNC 0x2 84#define SCSW_FCTL_START_FUNC 0x4 85 86#define SCSW_ACTL_SUSPENDED 0x1 87#define SCSW_ACTL_DEVACT 0x2 88#define SCSW_ACTL_SCHACT 0x4 89#define SCSW_ACTL_CLEAR_PEND 0x8 90#define SCSW_ACTL_HALT_PEND 0x10 91#define SCSW_ACTL_START_PEND 0x20 92#define SCSW_ACTL_RESUME_PEND 0x40 93 94#define SCSW_STCTL_STATUS_PEND 0x1 95#define SCSW_STCTL_SEC_STATUS 0x2 96#define SCSW_STCTL_PRIM_STATUS 0x4 97#define SCSW_STCTL_INTER_STATUS 0x8 98#define SCSW_STCTL_ALERT_STATUS 0x10 99 100#define DEV_STAT_ATTENTION 0x80 101#define DEV_STAT_STAT_MOD 0x40 102#define DEV_STAT_CU_END 0x20 103#define DEV_STAT_BUSY 0x10 104#define DEV_STAT_CHN_END 0x08 105#define DEV_STAT_DEV_END 0x04 106#define DEV_STAT_UNIT_CHECK 0x02 107#define DEV_STAT_UNIT_EXCEP 0x01 108 109#define SCHN_STAT_PCI 0x80 110#define SCHN_STAT_INCORR_LEN 0x40 111#define SCHN_STAT_PROG_CHECK 0x20 112#define SCHN_STAT_PROT_CHECK 0x10 113#define SCHN_STAT_CHN_DATA_CHK 0x08 114#define SCHN_STAT_CHN_CTRL_CHK 0x04 115#define SCHN_STAT_INTF_CTRL_CHK 0x02 116#define SCHN_STAT_CHAIN_CHECK 0x01 117 118/* 119 * architectured values for first sense byte 120 */ 121#define SNS0_CMD_REJECT 0x80 122#define SNS_CMD_REJECT SNS0_CMD_REJECT 123#define SNS0_INTERVENTION_REQ 0x40 124#define SNS0_BUS_OUT_CHECK 0x20 125#define SNS0_EQUIPMENT_CHECK 0x10 126#define SNS0_DATA_CHECK 0x08 127#define SNS0_OVERRUN 0x04 128/* 0x02 reserved */ 129#define SNS0_INCOMPL_DOMAIN 0x01 130 131/* 132 * architectured values for second sense byte 133 */ 134#define SNS1_PERM_ERR 0x80 135#define SNS1_INV_TRACK_FORMAT 0x40 136#define SNS1_EOC 0x20 137#define SNS1_MESSAGE_TO_OPER 0x10 138#define SNS1_NO_REC_FOUND 0x08 139#define SNS1_FILE_PROTECTED 0x04 140#define SNS1_WRITE_INHIBITED 0x02 141#define SNS1_INPRECISE_END 0x01 142 143/* 144 * architectured values for third sense byte 145 */ 146#define SNS2_REQ_INH_WRITE 0x80 147#define SNS2_CORRECTABLE 0x40 148#define SNS2_FIRST_LOG_ERR 0x20 149#define SNS2_ENV_DATA_PRESENT 0x10 150/* 0x08 reserved */ 151#define SNS2_INPRECISE_END 0x04 152/* 0x02 reserved */ 153/* 0x01 reserved */ 154 155#ifdef __KERNEL__ 156/* 157 * subchannel information block 158 */ 159typedef struct { 160 pmcw_t pmcw; /* path management control word */ 161 scsw_t scsw; /* subchannel status word */ 162 __u8 mda[12]; /* model dependent area */ 163 } __attribute__ ((packed,aligned(4))) schib_t; 164#endif /* __KERNEL__ */ 165 166typedef struct { 167 __u8 cmd_code;/* command code */ 168 __u8 flags; /* flags, like IDA adressing, etc. */ 169 __u16 count; /* byte count */ 170 __u32 cda; /* data address */ 171 } __attribute__ ((packed,aligned(8))) ccw1_t; 172 173#define CCW_FLAG_DC 0x80 174#define CCW_FLAG_CC 0x40 175#define CCW_FLAG_SLI 0x20 176#define CCW_FLAG_SKIP 0x10 177#define CCW_FLAG_PCI 0x08 178#define CCW_FLAG_IDA 0x04 179#define CCW_FLAG_SUSPEND 0x02 180 181#define CCW_CMD_READ_IPL 0x02 182#define CCW_CMD_NOOP 0x03 183#define CCW_CMD_BASIC_SENSE 0x04 184#define CCW_CMD_TIC 0x08 185#define CCW_CMD_SENSE_PGID 0x34 186#define CCW_CMD_SUSPEND_RECONN 0x5B 187#define CCW_CMD_RDC 0x64 188#define CCW_CMD_SET_PGID 0xAF 189#define CCW_CMD_SENSE_ID 0xE4 190#define CCW_CMD_DCTL 0xF3 191 192#ifdef __KERNEL__ 193#define SENSE_MAX_COUNT 0x20 194 195/* 196 * architectured values for first sense byte 197 */ 198#define SNS0_CMD_REJECT 0x80 199#define SNS_CMD_REJECT SNS0_CMD_REJECT 200#define SNS0_INTERVENTION_REQ 0x40 201#define SNS0_BUS_OUT_CHECK 0x20 202#define SNS0_EQUIPMENT_CHECK 0x10 203#define SNS0_DATA_CHECK 0x08 204#define SNS0_OVERRUN 0x04 205 206/* 207 * operation request block 208 */ 209typedef struct { 210 __u32 intparm; /* interruption parameter */ 211 __u32 key : 4; /* flags, like key, suspend control, etc. */ 212 __u32 spnd : 1; /* suspend control */ 213 __u32 res1 : 1; /* reserved */ 214 __u32 mod : 1; /* modification control */ 215 __u32 sync : 1; /* synchronize control */ 216 __u32 fmt : 1; /* format control */ 217 __u32 pfch : 1; /* prefetch control */ 218 __u32 isic : 1; /* initial-status-interruption control */ 219 __u32 alcc : 1; /* address-limit-checking control */ 220 __u32 ssic : 1; /* suppress-suspended-interr. control */ 221 __u32 res2 : 1; /* reserved */ 222 __u32 c64 : 1; /* IDAW/QDIO 64 bit control */ 223 __u32 i2k : 1; /* IDAW 2/4kB block size control */ 224 __u32 lpm : 8; /* logical path mask */ 225 __u32 ils : 1; /* incorrect length */ 226 __u32 zero : 6; /* reserved zeros */ 227 __u32 orbx : 1; /* ORB extension control */ 228 __u32 cpa; /* channel program address */ 229 } __attribute__ ((packed,aligned(4))) orb_t; 230 231#endif /* __KERNEL__ */ 232typedef struct { 233 __u32 res0 : 4; /* reserved */ 234 __u32 pvrf : 1; /* path-verification-required flag */ 235 __u32 cpt : 1; /* channel-path timeout */ 236 __u32 fsavf : 1; /* Failing storage address validity flag */ 237 __u32 cons : 1; /* concurrent-sense */ 238 __u32 res8 : 2; /* reserved */ 239 __u32 scnt : 6; /* sense count if cons == 1 */ 240 __u32 res16 : 16; /* reserved */ 241 } __attribute__ ((packed)) erw_t; 242 243/* 244 * subchannel logout area 245 */ 246typedef struct { 247 __u32 res0 : 1; /* reserved */ 248 __u32 esf : 7; /* extended status flags */ 249 __u32 lpum : 8; /* last path used mask */ 250 __u32 res16 : 1; /* reserved */ 251 __u32 fvf : 5; /* field-validity flags */ 252 __u32 sacc : 2; /* storage access code */ 253 __u32 termc : 2; /* termination code */ 254 __u32 devsc : 1; /* device-status check */ 255 __u32 serr : 1; /* secondary error */ 256 __u32 ioerr : 1; /* i/o-error alert */ 257 __u32 seqc : 3; /* sequence code */ 258 } __attribute__ ((packed)) sublog_t ; 259 260/* 261 * Format 0 Extended Status Word (ESW) 262 */ 263typedef struct { 264 sublog_t sublog; /* subchannel logout */ 265 erw_t erw; /* extended report word */ 266 __u32 faddr; /* failing address */ 267 __u32 zeros[2]; /* 2 fullwords of zeros */ 268 } __attribute__ ((packed)) esw0_t; 269 270/* 271 * Format 1 Extended Status Word (ESW) 272 */ 273typedef struct { 274 __u8 zero0; /* reserved zeros */ 275 __u8 lpum; /* last path used mask */ 276 __u16 zero16; /* reserved zeros */ 277 erw_t erw; /* extended report word */ 278 __u32 zeros[3]; /* 2 fullwords of zeros */ 279 } __attribute__ ((packed)) esw1_t; 280 281/* 282 * Format 2 Extended Status Word (ESW) 283 */ 284typedef struct { 285 __u8 zero0; /* reserved zeros */ 286 __u8 lpum; /* last path used mask */ 287 __u16 dcti; /* device-connect-time interval */ 288 erw_t erw; /* extended report word */ 289 __u32 zeros[3]; /* 2 fullwords of zeros */ 290 } __attribute__ ((packed)) esw2_t; 291 292/* 293 * Format 3 Extended Status Word (ESW) 294 */ 295typedef struct { 296 __u8 zero0; /* reserved zeros */ 297 __u8 lpum; /* last path used mask */ 298 __u16 res; /* reserved */ 299 erw_t erw; /* extended report word */ 300 __u32 zeros[3]; /* 2 fullwords of zeros */ 301 } __attribute__ ((packed)) esw3_t; 302 303typedef union { 304 esw0_t esw0; 305 esw1_t esw1; 306 esw2_t esw2; 307 esw3_t esw3; 308 } __attribute__ ((packed)) esw_t; 309 310/* 311 * interruption response block 312 */ 313typedef struct { 314 scsw_t scsw; /* subchannel status word */ 315 esw_t esw; /* extended status word */ 316 __u8 ecw[32]; /* extended control word */ 317 } __attribute__ ((packed,aligned(4))) irb_t; 318#ifdef __KERNEL__ 319 320/* 321 * TPI info structure 322 */ 323typedef struct { 324 __u32 reserved1 : 16; /* reserved 0x00000001 */ 325 __u32 irq : 16; /* aka. subchannel number */ 326 __u32 intparm; /* interruption parameter */ 327 __u32 adapter_IO : 1; 328 __u32 reserved2 : 1; 329 __u32 isc : 3; 330 __u32 reserved3 : 12; 331 __u32 int_type : 3; 332 __u32 reserved4 : 12; 333 } __attribute__ ((packed)) tpi_info_t; 334 335 336// 337// command information word (CIW) layout 338// 339typedef struct _ciw { 340 __u32 et : 2; // entry type 341 __u32 reserved : 2; // reserved 342 __u32 ct : 4; // command type 343 __u32 cmd : 8; // command 344 __u32 count : 16; // count 345 } __attribute__ ((packed)) ciw_t; 346 347#define CIW_TYPE_RCD 0x0 // read configuration data 348#define CIW_TYPE_SII 0x1 // set interface identifier 349#define CIW_TYPE_RNI 0x2 // read node identifier 350 351#define MAX_CIWS 8 352// 353// sense-id response buffer layout 354// 355typedef struct { 356 /* common part */ 357 __u8 reserved; /* always 0x'FF' */ 358 __u16 cu_type; /* control unit type */ 359 __u8 cu_model; /* control unit model */ 360 __u16 dev_type; /* device type */ 361 __u8 dev_model; /* device model */ 362 __u8 unused; /* padding byte */ 363 /* extended part */ 364 ciw_t ciw[MAX_CIWS]; /* variable # of CIWs */ 365 } __attribute__ ((packed,aligned(4))) senseid_t; 366/* 367 * where we put the ssd info 368 */ 369typedef struct _ssd_info { 370 __u8 valid:1; 371 __u8 type:7; /* subchannel type */ 372 __u8 chpid[8]; /* chpids */ 373 __u16 fla[8]; /* full link addresses */ 374} __attribute__ ((packed)) ssd_info_t; 375 376/* 377 * area for store event information 378 */ 379typedef struct chsc_area_t { 380 struct { 381 /* word 0 */ 382 __u16 command_code1; 383 __u16 command_code2; 384 union { 385 struct { 386 /* word 1 */ 387 __u32 reserved1; 388 /* word 2 */ 389 __u32 reserved2; 390 } __attribute__ ((packed,aligned(8))) sei_req; 391 struct { 392 /* word 1 */ 393 __u16 reserved1; 394 __u16 f_sch; /* first subchannel */ 395 /* word 2 */ 396 __u16 reserved2; 397 __u16 l_sch; /* last subchannel */ 398 } __attribute__ ((packed,aligned(8))) ssd_req; 399 } request_block_data; 400 /* word 3 */ 401 __u32 reserved3; 402 } __attribute__ ((packed,aligned(8))) request_block; 403 struct { 404 /* word 0 */ 405 __u16 length; 406 __u16 response_code; 407 /* word 1 */ 408 __u32 reserved1; 409 union { 410 struct { 411 /* word 2 */ 412 __u8 flags; 413 __u8 vf; /* validity flags */ 414 __u8 rs; /* reporting source */ 415 __u8 cc; /* content code */ 416 /* word 3 */ 417 __u16 fla; /* full link address */ 418 __u16 rsid; /* reporting source id */ 419 /* word 4 */ 420 __u32 reserved2; 421 /* word 5 */ 422 __u32 reserved3; 423 /* word 6 */ 424 __u32 ccdf; /* content-code dependent field */ 425 /* word 7 */ 426 __u32 reserved4; 427 /* word 8 */ 428 __u32 reserved5; 429 /* word 9 */ 430 __u32 reserved6; 431 } __attribute__ ((packed,aligned(8))) sei_res; 432 struct { 433 /* word 2 */ 434 __u8 sch_valid : 1; 435 __u8 dev_valid : 1; 436 __u8 st : 3; /* subchannel type */ 437 __u8 zeroes : 3; 438 __u8 unit_addr; /* unit address */ 439 __u16 devno; /* device number */ 440 /* word 3 */ 441 __u8 path_mask; 442 __u8 fla_valid_mask; 443 __u16 sch; /* subchannel */ 444 /* words 4-5 */ 445 __u8 chpid[8]; /* chpids 0-7 */ 446 /* words 6-9 */ 447 __u16 fla[8]; /* full link addresses 0-7 */ 448 } __attribute__ ((packed,aligned(8))) ssd_res; 449 } response_block_data; 450 } __attribute__ ((packed,aligned(8))) response_block; 451} __attribute__ ((packed,aligned(PAGE_SIZE))) chsc_area_t; 452 453#endif /* __KERNEL__ */ 454/* 455 * sense data 456 */ 457typedef struct { 458 __u8 res[32]; /* reserved */ 459 __u8 data[32]; /* sense data */ 460 } __attribute__ ((packed)) sense_t; 461 462/* 463 * device status area, to be provided by the device driver 464 * when calling request_irq() as parameter "dev_id", later 465 * tied to the "action" control block. 466 * 467 * Note : No data area must be added after union ii or the 468 * effective devstat size calculation will fail ! 469 */ 470typedef struct { 471 __u16 devno; /* device number, aka. "cuu" from irb */ 472 unsigned long intparm; /* interrupt parameter */ 473 __u8 cstat; /* channel status - accumulated */ 474 __u8 dstat; /* device status - accumulated */ 475 __u8 lpum; /* last path used mask from irb */ 476 __u8 unused; /* not used - reserved */ 477 unsigned int flag; /* flag : see below */ 478 __u32 cpa; /* CCW address from irb at primary status */ 479 __u32 rescnt; /* res. count from irb at primary status */ 480 __u32 scnt; /* sense count, if DEVSTAT_FLAG_SENSE_AVAIL */ 481 union { 482 irb_t irb; /* interruption response block */ 483 sense_t sense; /* sense information */ 484 } ii; /* interrupt information */ 485 } devstat_t; 486 487#define DEVSTAT_FLAG_SENSE_AVAIL 0x00000001 488#define DEVSTAT_NOT_OPER 0x00000002 489#define DEVSTAT_START_FUNCTION 0x00000004 490#define DEVSTAT_HALT_FUNCTION 0x00000008 491#define DEVSTAT_STATUS_PENDING 0x00000010 492#define DEVSTAT_REVALIDATE 0x00000020 493#define DEVSTAT_DEVICE_GONE 0x00000040 494#define DEVSTAT_DEVICE_OWNED 0x00000080 495#define DEVSTAT_CLEAR_FUNCTION 0x00000100 496#define DEVSTAT_PCI 0x00000200 497#define DEVSTAT_SUSPENDED 0x00000400 498#define DEVSTAT_UNKNOWN_DEV 0x00000800 499#define DEVSTAT_UNFRIENDLY_DEV 0x00001000 500#define DEVSTAT_FINAL_STATUS 0x80000000 501 502#define DEVINFO_NOT_OPER DEVSTAT_NOT_OPER 503#define DEVINFO_UNKNOWN_DEV DEVSTAT_UNKNOWN_DEV 504#define DEVINFO_DEVICE_OWNED DEVSTAT_DEVICE_OWNED 505#define DEVINFO_QDIO_CAPABLE 0x40000000 506#define DEVINFO_UNFRIENDLY_DEV DEVSTAT_UNFRIENDLY_DEV 507 508#define INTPARM_STATUS_PENDING 0xFFFFFFFF 509#ifdef __KERNEL__ 510 511#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */ 512 513typedef void (* io_handler_func1_t) ( int irq, 514 devstat_t *devstat, 515 struct pt_regs *rgs); 516 517typedef void (* io_handler_func_t) ( int irq, 518 void *devstat, 519 struct pt_regs *rgs); 520 521typedef void ( * not_oper_handler_func_t)( int irq, 522 int status ); 523 524typedef int (* adapter_int_handler_t)( __u32 intparm ); 525 526typedef struct { 527 io_handler_func_t handler; /* interrupt handler routine */ 528 const char *name; /* device name */ 529 devstat_t *dev_id; /* device status block */ 530 } irq_desc_t; 531 532typedef struct { 533 __u8 state1 : 2; /* path state value 1 */ 534 __u8 state2 : 2; /* path state value 2 */ 535 __u8 state3 : 1; /* path state value 3 */ 536 __u8 resvd : 3; /* reserved */ 537 } __attribute__ ((packed)) path_state_t; 538 539typedef struct { 540 union { 541 __u8 fc; /* SPID function code */ 542 path_state_t ps; /* SNID path state */ 543 } inf; 544 __u32 cpu_addr : 16; /* CPU address */ 545 __u32 cpu_id : 24; /* CPU identification */ 546 __u32 cpu_model : 16; /* CPU model */ 547 __u32 tod_high; /* high word TOD clock */ 548 } __attribute__ ((packed)) pgid_t; 549 550#define SPID_FUNC_SINGLE_PATH 0x00 551#define SPID_FUNC_MULTI_PATH 0x80 552#define SPID_FUNC_ESTABLISH 0x00 553#define SPID_FUNC_RESIGN 0x40 554#define SPID_FUNC_DISBAND 0x20 555 556#define SNID_STATE1_RESET 0 557#define SNID_STATE1_UNGROUPED 2 558#define SNID_STATE1_GROUPED 3 559 560#define SNID_STATE2_NOT_RESVD 0 561#define SNID_STATE2_RESVD_ELSE 2 562#define SNID_STATE2_RESVD_SELF 3 563 564#define SNID_STATE3_MULTI_PATH 1 565#define SNID_STATE3_SINGLE_PATH 0 566 567/* 568 * Flags used as input parameters for do_IO() 569 */ 570#define DOIO_EARLY_NOTIFICATION 0x0001 /* allow for I/O completion ... */ 571 /* ... notification after ... */ 572 /* ... primary interrupt status */ 573#define DOIO_RETURN_CHAN_END DOIO_EARLY_NOTIFICATION 574#define DOIO_VALID_LPM 0x0002 /* LPM input parameter is valid */ 575#define DOIO_WAIT_FOR_INTERRUPT 0x0004 /* wait synchronously for interrupt */ 576#define DOIO_REPORT_ALL 0x0008 /* report all interrupt conditions */ 577#define DOIO_ALLOW_SUSPEND 0x0010 /* allow for channel prog. suspend */ 578#define DOIO_DENY_PREFETCH 0x0020 /* don't allow for CCW prefetch */ 579#define DOIO_SUPPRESS_INTER 0x0040 /* suppress intermediate inter. */ 580 /* ... for suspended CCWs */ 581#define DOIO_TIMEOUT 0x0080 /* 3 secs. timeout for sync. I/O */ 582#define DOIO_DONT_CALL_INTHDLR 0x0100 /* don't call interrupt handler */ 583#define DOIO_CANCEL_ON_TIMEOUT 0x0200 /* cancel I/O if it timed out */ 584 585/* 586 * do_IO() 587 * 588 * Start a S/390 channel program. When the interrupt arrives, the 589 * IRQ handler is called, either immediately, delayed (dev-end missing, 590 * or sense required) or never (no IRQ handler registered - 591 * should never occur, as the IRQ (subchannel ID) should be 592 * disabled if no handler is present. Depending on the action 593 * taken, do_IO() returns : 0 - Success 594 * -EIO - Status pending 595 * see : action->dev_id->cstat 596 * action->dev_id->dstat 597 * -EBUSY - Device busy 598 * -ENODEV - Device not operational 599 */ 600int do_IO( int irq, /* IRQ aka. subchannel number */ 601 ccw1_t *cpa, /* logical channel program address */ 602 unsigned long intparm, /* interruption parameter */ 603 __u8 lpm, /* logical path mask */ 604 unsigned long flag); /* flags : see above */ 605 606int start_IO( int irq, /* IRQ aka. subchannel number */ 607 ccw1_t *cpa, /* logical channel program address */ 608 unsigned long intparm, /* interruption parameter */ 609 __u8 lpm, /* logical path mask */ 610 unsigned int flag); /* flags : see above */ 611 612void do_crw_pending( void ); /* CRW handler */ 613 614int resume_IO( int irq); /* IRQ aka. subchannel number */ 615 616int halt_IO( int irq, /* IRQ aka. subchannel number */ 617 unsigned long intparm, /* dummy intparm */ 618 unsigned long flag); /* possible DOIO_WAIT_FOR_INTERRUPT */ 619 620int clear_IO( int irq, /* IRQ aka. subchannel number */ 621 unsigned long intparm, /* dummy intparm */ 622 unsigned long flag); /* possible DOIO_WAIT_FOR_INTERRUPT */ 623 624int process_IRQ( struct pt_regs regs, 625 unsigned int irq, 626 unsigned int intparm); 627 628 629int enable_cpu_sync_isc ( int irq ); 630int disable_cpu_sync_isc( int irq ); 631 632typedef struct { 633 int irq; /* irq, aka. subchannel */ 634 __u16 devno; /* device number */ 635 unsigned int status; /* device status */ 636 senseid_t sid_data; /* senseID data */ 637 } s390_dev_info_t; 638 639int get_dev_info( int irq, s390_dev_info_t *); /* to be eliminated - don't use */ 640 641int get_dev_info_by_irq ( int irq, s390_dev_info_t *pdi); 642int get_dev_info_by_devno( __u16 devno, s390_dev_info_t *pdi); 643 644int get_irq_by_devno( __u16 devno ); 645unsigned int get_devno_by_irq( int irq ); 646 647int get_irq_first( void ); 648int get_irq_next ( int irq ); 649 650int read_dev_chars( int irq, void **buffer, int length ); 651int read_conf_data( int irq, void **buffer, int *length, __u8 lpm ); 652 653int s390_DevicePathVerification( int irq, __u8 domask ); 654 655int s390_trigger_resense(int irq); 656 657int s390_request_irq_special( int irq, 658 io_handler_func_t io_handler, 659 not_oper_handler_func_t not_oper_handler, 660 unsigned long irqflags, 661 const char *devname, 662 void *dev_id); 663 664extern int set_cons_dev(int irq); 665extern int reset_cons_dev(int irq); 666extern int wait_cons_dev(int irq); 667extern schib_t *s390_get_schib( int irq ); 668 669extern int s390_register_adapter_interrupt(adapter_int_handler_t handler); 670extern int s390_unregister_adapter_interrupt(adapter_int_handler_t handler); 671 672/* 673 * Some S390 specific IO instructions as inline 674 */ 675 676extern __inline__ int stsch(int irq, volatile schib_t *addr) 677{ 678 int ccode; 679 680 __asm__ __volatile__( 681 " lr 1,%1\n" 682 " stsch 0(%2)\n" 683 " ipm %0\n" 684 " srl %0,28" 685 : "=d" (ccode) 686 : "d" (irq | 0x10000), "a" (addr) 687 : "cc", "1" ); 688 return ccode; 689} 690 691extern __inline__ int msch(int irq, volatile schib_t *addr) 692{ 693 int ccode; 694 695 __asm__ __volatile__( 696 " lr 1,%1\n" 697 " msch 0(%2)\n" 698 " ipm %0\n" 699 " srl %0,28" 700 : "=d" (ccode) 701 : "d" (irq | 0x10000L), "a" (addr) 702 : "cc", "1" ); 703 return ccode; 704} 705 706extern __inline__ int msch_err(int irq, volatile schib_t *addr) 707{ 708 int ccode; 709 710 __asm__ __volatile__( 711 " lr 1,%1\n" 712 " msch 0(%2)\n" 713 "0: ipm %0\n" 714 " srl %0,28\n" 715 "1:\n" 716#ifdef CONFIG_ARCH_S390X 717 ".section .fixup,\"ax\"\n" 718 "2: l %0,%3\n" 719 " jg 1b\n" 720 ".previous\n" 721 ".section __ex_table,\"a\"\n" 722 " .align 8\n" 723 " .quad 0b,2b\n" 724 ".previous" 725#else 726 ".section .fixup,\"ax\"\n" 727 "2: l %0,%3\n" 728 " bras 1,3f\n" 729 " .long 1b\n" 730 "3: l 1,0(1)\n" 731 " br 1\n" 732 ".previous\n" 733 ".section __ex_table,\"a\"\n" 734 " .align 4\n" 735 " .long 0b,2b\n" 736 ".previous" 737#endif 738 : "=d" (ccode) 739 : "d" (irq | 0x10000L), "a" (addr), "i" (__LC_PGM_ILC) 740 : "cc", "1" ); 741 return ccode; 742} 743 744extern __inline__ int tsch(int irq, volatile irb_t *addr) 745{ 746 int ccode; 747 748 __asm__ __volatile__( 749 " lr 1,%1\n" 750 " tsch 0(%2)\n" 751 " ipm %0\n" 752 " srl %0,28" 753 : "=d" (ccode) 754 : "d" (irq | 0x10000L), "a" (addr) 755 : "cc", "1" ); 756 return ccode; 757} 758 759extern __inline__ int tpi( volatile tpi_info_t *addr) 760{ 761 int ccode; 762 763 __asm__ __volatile__( 764 " tpi 0(%1)\n" 765 " ipm %0\n" 766 " srl %0,28" 767 : "=d" (ccode) 768 : "a" (addr) 769 : "cc", "1" ); 770 return ccode; 771} 772 773extern __inline__ int ssch(int irq, volatile orb_t *addr) 774{ 775 int ccode; 776 777 __asm__ __volatile__( 778 " lr 1,%1\n" 779 " ssch 0(%2)\n" 780 " ipm %0\n" 781 " srl %0,28" 782 : "=d" (ccode) 783 : "d" (irq | 0x10000L), "a" (addr) 784 : "cc", "1" ); 785 return ccode; 786} 787 788extern __inline__ int rsch(int irq) 789{ 790 int ccode; 791 792 __asm__ __volatile__( 793 " lr 1,%1\n" 794 " rsch\n" 795 " ipm %0\n" 796 " srl %0,28" 797 : "=d" (ccode) 798 : "d" (irq | 0x10000L) 799 : "cc", "1" ); 800 return ccode; 801} 802 803extern __inline__ int csch(int irq) 804{ 805 int ccode; 806 807 __asm__ __volatile__( 808 " lr 1,%1\n" 809 " csch\n" 810 " ipm %0\n" 811 " srl %0,28" 812 : "=d" (ccode) 813 : "d" (irq | 0x10000L) 814 : "cc", "1" ); 815 return ccode; 816} 817 818extern __inline__ int hsch(int irq) 819{ 820 int ccode; 821 822 __asm__ __volatile__( 823 " lr 1,%1\n" 824 " hsch\n" 825 " ipm %0\n" 826 " srl %0,28" 827 : "=d" (ccode) 828 : "d" (irq | 0x10000L) 829 : "cc", "1" ); 830 return ccode; 831} 832 833extern __inline__ int xsch(int irq) 834{ 835 int ccode; 836 837 __asm__ __volatile__( 838 " lr 1,%1\n" 839 " .insn rre,0xb2760000,%1,0\n" 840 " ipm %0\n" 841 " srl %0,28" 842 : "=d" (ccode) 843 : "d" (irq | 0x10000L) 844 : "cc", "1" ); 845 return ccode; 846} 847 848extern __inline__ int iac( void) 849{ 850 int ccode; 851 852 __asm__ __volatile__( 853 " iac 1\n" 854 " ipm %0\n" 855 " srl %0,28" 856 : "=d" (ccode) : : "cc", "1" ); 857 return ccode; 858} 859 860extern __inline__ int rchp(int chpid) 861{ 862 int ccode; 863 864 __asm__ __volatile__( 865 " lr 1,%1\n" 866 " rchp\n" 867 " ipm %0\n" 868 " srl %0,28" 869 : "=d" (ccode) 870 : "d" (chpid) 871 : "cc", "1" ); 872 return ccode; 873} 874 875typedef struct { 876 __u16 vrdcdvno : 16; /* device number (input) */ 877 __u16 vrdclen : 16; /* data block length (input) */ 878 __u32 vrdcvcla : 8; /* virtual device class (output) */ 879 __u32 vrdcvtyp : 8; /* virtual device type (output) */ 880 __u32 vrdcvsta : 8; /* virtual device status (output) */ 881 __u32 vrdcvfla : 8; /* virtual device flags (output) */ 882 __u32 vrdcrccl : 8; /* real device class (output) */ 883 __u32 vrdccrty : 8; /* real device type (output) */ 884 __u32 vrdccrmd : 8; /* real device model (output) */ 885 __u32 vrdccrft : 8; /* real device feature (output) */ 886 } __attribute__ ((packed,aligned(4))) diag210_t; 887 888void VM_virtual_device_info( __u16 devno, /* device number */ 889 senseid_t *ps ); /* ptr to senseID data */ 890 891extern __inline__ int diag210( diag210_t * addr) 892{ 893 int ccode; 894 895 __asm__ __volatile__( 896#ifdef CONFIG_ARCH_S390X 897 " sam31\n" 898 " diag %1,0,0x210\n" 899 " sam64\n" 900#else 901 " diag %1,0,0x210\n" 902#endif 903 " ipm %0\n" 904 " srl %0,28" 905 : "=d" (ccode) 906 : "a" (addr) 907 : "cc" ); 908 return ccode; 909} 910extern __inline__ int chsc( chsc_area_t * chsc_area) 911{ 912 int cc; 913 914 __asm__ __volatile__ ( 915 ".insn rre,0xb25f0000,%1,0 \n\t" 916 "ipm %0 \n\t" 917 "srl %0,28 \n\t" 918 : "=d" (cc) 919 : "d" (chsc_area) 920 : "cc" ); 921 922 return cc; 923} 924 925/* 926 * Various low-level irq details needed by irq.c, process.c, 927 * time.c, io_apic.c and smp.c 928 * 929 * Interrupt entry/exit code at both C and assembly level 930 */ 931 932void mask_irq(unsigned int irq); 933void unmask_irq(unsigned int irq); 934 935#define MAX_IRQ_SOURCES 128 936 937extern spinlock_t irq_controller_lock; 938 939#ifdef CONFIG_SMP 940 941#include <asm/atomic.h> 942 943static inline void irq_enter(int cpu, unsigned int irq) 944{ 945 hardirq_enter(cpu); 946 while (atomic_read(&global_irq_lock) != 0) { 947 eieio(); 948 } 949} 950 951static inline void irq_exit(int cpu, unsigned int irq) 952{ 953 hardirq_exit(cpu); 954 release_irqlock(cpu); 955} 956 957 958#else 959 960#define irq_enter(cpu, irq) (++local_irq_count(cpu)) 961#define irq_exit(cpu, irq) (--local_irq_count(cpu)) 962 963#endif 964 965#define __STR(x) #x 966#define STR(x) __STR(x) 967 968#ifdef CONFIG_SMP 969 970/* 971 * SMP has a few special interrupts for IPI messages 972 */ 973 974#endif /* CONFIG_SMP */ 975 976/* 977 * x86 profiling function, SMP safe. We might want to do this in 978 * assembly totally? 979 */ 980extern char _stext; 981static inline void s390_do_profile (unsigned long addr) 982{ 983 if (prof_buffer && current->pid) { 984#ifndef CONFIG_ARCH_S390X 985 addr &= 0x7fffffff; 986#endif 987 addr -= (unsigned long) &_stext; 988 addr >>= prof_shift; 989 /* 990 * Don't ignore out-of-bounds EIP values silently, 991 * put them into the last histogram slot, so if 992 * present, they will show up as a sharp peak. 993 */ 994 if (addr > prof_len-1) 995 addr = prof_len-1; 996 atomic_inc((atomic_t *)&prof_buffer[addr]); 997 } 998} 999 1000#include <asm/s390io.h> 1001 1002#define s390irq_spin_lock(irq) \ 1003 spin_lock(&(ioinfo[irq]->irq_lock)) 1004 1005#define s390irq_spin_unlock(irq) \ 1006 spin_unlock(&(ioinfo[irq]->irq_lock)) 1007 1008#define s390irq_spin_lock_irqsave(irq,flags) \ 1009 spin_lock_irqsave(&(ioinfo[irq]->irq_lock), flags) 1010#define s390irq_spin_unlock_irqrestore(irq,flags) \ 1011 spin_unlock_irqrestore(&(ioinfo[irq]->irq_lock), flags) 1012 1013#define touch_nmi_watchdog() do { } while(0) 1014 1015#endif /* __KERNEL__ */ 1016#endif 1017 1018