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Diffstat (limited to 'include/asm-s390/cio.h')
| -rw-r--r-- | include/asm-s390/cio.h | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h new file mode 100644 index 000000000000..089cf567c317 --- /dev/null +++ b/include/asm-s390/cio.h @@ -0,0 +1,281 @@ +/* + * 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 |