/* * include/asm-s390/cio.h * include/asm-s390x/cio.h * * Common interface for I/O on S/390 */ #ifndef _ASM_S390_CIO_H_ #define _ASM_S390_CIO_H_ #include <linux/spinlock.h> #include <asm/types.h> #ifdef __KERNEL__ #define LPM_ANYPATH 0xff /* * subchannel status word */ struct scsw { __u32 key : 4; /* subchannel key */ __u32 sctl : 1; /* suspend control */ __u32 eswf : 1; /* ESW format */ __u32 cc : 2; /* deferred condition code */ __u32 fmt : 1; /* format */ __u32 pfch : 1; /* prefetch */ __u32 isic : 1; /* initial-status interruption control */ __u32 alcc : 1; /* address-limit checking control */ __u32 ssi : 1; /* supress-suspended interruption */ __u32 zcc : 1; /* zero condition code */ __u32 ectl : 1; /* extended control */ __u32 pno : 1; /* path not operational */ __u32 res : 1; /* reserved */ __u32 fctl : 3; /* function control */ __u32 actl : 7; /* activity control */ __u32 stctl : 5; /* status control */ __u32 cpa; /* channel program address */ __u32 dstat : 8; /* device status */ __u32 cstat : 8; /* subchannel status */ __u32 count : 16; /* residual count */ } __attribute__ ((packed)); #define SCSW_FCTL_CLEAR_FUNC 0x1 #define SCSW_FCTL_HALT_FUNC 0x2 #define SCSW_FCTL_START_FUNC 0x4 #define SCSW_ACTL_SUSPENDED 0x1 #define SCSW_ACTL_DEVACT 0x2 #define SCSW_ACTL_SCHACT 0x4 #define SCSW_ACTL_CLEAR_PEND 0x8 #define SCSW_ACTL_HALT_PEND 0x10 #define SCSW_ACTL_START_PEND 0x20 #define SCSW_ACTL_RESUME_PEND 0x40 #define SCSW_STCTL_STATUS_PEND 0x1 #define SCSW_STCTL_SEC_STATUS 0x2 #define SCSW_STCTL_PRIM_STATUS 0x4 #define SCSW_STCTL_INTER_STATUS 0x8 #define SCSW_STCTL_ALERT_STATUS 0x10 #define DEV_STAT_ATTENTION 0x80 #define DEV_STAT_STAT_MOD 0x40 #define DEV_STAT_CU_END 0x20 #define DEV_STAT_BUSY 0x10 #define DEV_STAT_CHN_END 0x08 #define DEV_STAT_DEV_END 0x04 #define DEV_STAT_UNIT_CHECK 0x02 #define DEV_STAT_UNIT_EXCEP 0x01 #define SCHN_STAT_PCI 0x80 #define SCHN_STAT_INCORR_LEN 0x40 #define SCHN_STAT_PROG_CHECK 0x20 #define SCHN_STAT_PROT_CHECK 0x10 #define SCHN_STAT_CHN_DATA_CHK 0x08 #define SCHN_STAT_CHN_CTRL_CHK 0x04 #define SCHN_STAT_INTF_CTRL_CHK 0x02 #define SCHN_STAT_CHAIN_CHECK 0x01 /* * architectured values for first sense byte */ #define SNS0_CMD_REJECT 0x80 #define SNS_CMD_REJECT SNS0_CMD_REJEC #define SNS0_INTERVENTION_REQ 0x40 #define SNS0_BUS_OUT_CHECK 0x20 #define SNS0_EQUIPMENT_CHECK 0x10 #define SNS0_DATA_CHECK 0x08 #define SNS0_OVERRUN 0x04 #define SNS0_INCOMPL_DOMAIN 0x01 /* * architectured values for second sense byte */ #define SNS1_PERM_ERR 0x80 #define SNS1_INV_TRACK_FORMAT 0x40 #define SNS1_EOC 0x20 #define SNS1_MESSAGE_TO_OPER 0x10 #define SNS1_NO_REC_FOUND 0x08 #define SNS1_FILE_PROTECTED 0x04 #define SNS1_WRITE_INHIBITED 0x02 #define SNS1_INPRECISE_END 0x01 /* * architectured values for third sense byte */ #define SNS2_REQ_INH_WRITE 0x80 #define SNS2_CORRECTABLE 0x40 #define SNS2_FIRST_LOG_ERR 0x20 #define SNS2_ENV_DATA_PRESENT 0x10 #define SNS2_INPRECISE_END 0x04 struct ccw1 { __u8 cmd_code; /* command code */ __u8 flags; /* flags, like IDA addressing, etc. */ __u16 count; /* byte count */ __u32 cda; /* data address */ } __attribute__ ((packed,aligned(8))); #define CCW_FLAG_DC 0x80 #define CCW_FLAG_CC 0x40 #define CCW_FLAG_SLI 0x20 #define CCW_FLAG_SKIP 0x10 #define CCW_FLAG_PCI 0x08 #define CCW_FLAG_IDA 0x04 #define CCW_FLAG_SUSPEND 0x02 #define CCW_CMD_READ_IPL 0x02 #define CCW_CMD_NOOP 0x03 #define CCW_CMD_BASIC_SENSE 0x04 #define CCW_CMD_TIC 0x08 #define CCW_CMD_STLCK 0x14 #define CCW_CMD_SENSE_PGID 0x34 #define CCW_CMD_SUSPEND_RECONN 0x5B #define CCW_CMD_RDC 0x64 #define CCW_CMD_RELEASE 0x94 #define CCW_CMD_SET_PGID 0xAF #define CCW_CMD_SENSE_ID 0xE4 #define CCW_CMD_DCTL 0xF3 #define SENSE_MAX_COUNT 0x20 struct erw { __u32 res0 : 3; /* reserved */ __u32 auth : 1; /* Authorization check */ __u32 pvrf : 1; /* path-verification-required flag */ __u32 cpt : 1; /* channel-path timeout */ __u32 fsavf : 1; /* Failing storage address validity flag */ __u32 cons : 1; /* concurrent-sense */ __u32 scavf : 1; /* Secondary ccw address validity flag */ __u32 fsaf : 1; /* Failing storage address format */ __u32 scnt : 6; /* sense count if cons == 1 */ __u32 res16 : 16; /* reserved */ } __attribute__ ((packed)); /* * subchannel logout area */ struct sublog { __u32 res0 : 1; /* reserved */ __u32 esf : 7; /* extended status flags */ __u32 lpum : 8; /* last path used mask */ __u32 arep : 1; /* ancillary report */ __u32 fvf : 5; /* field-validity flags */ __u32 sacc : 2; /* storage access code */ __u32 termc : 2; /* termination code */ __u32 devsc : 1; /* device-status check */ __u32 serr : 1; /* secondary error */ __u32 ioerr : 1; /* i/o-error alert */ __u32 seqc : 3; /* sequence code */ } __attribute__ ((packed)); /* * Format 0 Extended Status Word (ESW) */ struct esw0 { struct sublog sublog; /* subchannel logout */ struct erw erw; /* extended report word */ __u32 faddr[2]; /* failing storage address */ __u32 saddr; /* secondary ccw address */ } __attribute__ ((packed)); /* * Format 1 Extended Status Word (ESW) */ struct esw1 { __u8 zero0; /* reserved zeros */ __u8 lpum; /* last path used mask */ __u16 zero16; /* reserved zeros */ struct erw erw; /* extended report word */ __u32 zeros[3]; /* 2 fullwords of zeros */ } __attribute__ ((packed)); /* * Format 2 Extended Status Word (ESW) */ struct esw2 { __u8 zero0; /* reserved zeros */ __u8 lpum; /* last path used mask */ __u16 dcti; /* device-connect-time interval */ struct erw erw; /* extended report word */ __u32 zeros[3]; /* 2 fullwords of zeros */ } __attribute__ ((packed)); /* * Format 3 Extended Status Word (ESW) */ struct esw3 { __u8 zero0; /* reserved zeros */ __u8 lpum; /* last path used mask */ __u16 res; /* reserved */ struct erw erw; /* extended report word */ __u32 zeros[3]; /* 2 fullwords of zeros */ } __attribute__ ((packed)); /* * interruption response block */ struct irb { struct scsw scsw; /* subchannel status word */ union { /* extended status word, 4 formats */ struct esw0 esw0; struct esw1 esw1; struct esw2 esw2; struct esw3 esw3; } esw; __u8 ecw[32]; /* extended control word */ } __attribute__ ((packed,aligned(4))); /* * command information word (CIW) layout */ struct ciw { __u32 et : 2; /* entry type */ __u32 reserved : 2; /* reserved */ __u32 ct : 4; /* command type */ __u32 cmd : 8; /* command */ __u32 count : 16; /* coun */ } __attribute__ ((packed)); #define CIW_TYPE_RCD 0x0 /* read configuration data */ #define CIW_TYPE_SII 0x1 /* set interface identifier */ #define CIW_TYPE_RNI 0x2 /* read node identifier */ /* * Flags used as input parameters for do_IO() */ #define DOIO_ALLOW_SUSPEND 0x0001 /* allow for channel prog. suspend */ #define DOIO_DENY_PREFETCH 0x0002 /* don't allow for CCW prefetch */ #define DOIO_SUPPRESS_INTER 0x0004 /* suppress intermediate inter. */ /* ... for suspended CCWs */ /* Device or subchannel gone. */ #define CIO_GONE 0x0001 /* No path to device. */ #define CIO_NO_PATH 0x0002 /* Device has appeared. */ #define CIO_OPER 0x0004 /* Sick revalidation of device. */ #define CIO_REVALIDATE 0x0008 struct diag210 { __u16 vrdcdvno : 16; /* device number (input) */ __u16 vrdclen : 16; /* data block length (input) */ __u32 vrdcvcla : 8; /* virtual device class (output) */ __u32 vrdcvtyp : 8; /* virtual device type (output) */ __u32 vrdcvsta : 8; /* virtual device status (output) */ __u32 vrdcvfla : 8; /* virtual device flags (output) */ __u32 vrdcrccl : 8; /* real device class (output) */ __u32 vrdccrty : 8; /* real device type (output) */ __u32 vrdccrmd : 8; /* real device model (output) */ __u32 vrdccrft : 8; /* real device feature (output) */ } __attribute__ ((packed,aligned(4))); extern int diag210(struct diag210 *addr); extern void wait_cons_dev(void); extern void clear_all_subchannels(void); #endif #endif