/* * 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 #include #ifdef __KERNEL__ #define LPM_ANYPATH 0xff #define __MAX_CSSID 0 /** * struct cmd_scsw - command-mode subchannel status word * @key: subchannel key * @sctl: suspend control * @eswf: esw format * @cc: deferred condition code * @fmt: format * @pfch: prefetch * @isic: initial-status interruption control * @alcc: address-limit checking control * @ssi: suppress-suspended interruption * @zcc: zero condition code * @ectl: extended control * @pno: path not operational * @res: reserved * @fctl: function control * @actl: activity control * @stctl: status control * @cpa: channel program address * @dstat: device status * @cstat: subchannel status * @count: residual count */ struct cmd_scsw { __u32 key : 4; __u32 sctl : 1; __u32 eswf : 1; __u32 cc : 2; __u32 fmt : 1; __u32 pfch : 1; __u32 isic : 1; __u32 alcc : 1; __u32 ssi : 1; __u32 zcc : 1; __u32 ectl : 1; __u32 pno : 1; __u32 res : 1; __u32 fctl : 3; __u32 actl : 7; __u32 stctl : 5; __u32 cpa; __u32 dstat : 8; __u32 cstat : 8; __u32 count : 16; } __attribute__ ((packed)); /** * struct tm_scsw - transport-mode subchannel status word * @key: subchannel key * @eswf: esw format * @cc: deferred condition code * @fmt: format * @x: IRB-format control * @q: interrogate-complete * @ectl: extended control * @pno: path not operational * @fctl: function control * @actl: activity control * @stctl: status control * @tcw: TCW address * @dstat: device status * @cstat: subchannel status * @fcxs: FCX status * @schxs: subchannel-extended status */ struct tm_scsw { u32 key:4; u32 :1; u32 eswf:1; u32 cc:2; u32 fmt:3; u32 x:1; u32 q:1; u32 :1; u32 ectl:1; u32 pno:1; u32 :1; u32 fctl:3; u32 actl:7; u32 stctl:5; u32 tcw; u32 dstat:8; u32 cstat:8; u32 fcxs:8; u32 schxs:8; } __attribute__ ((packed)); /** * union scsw - subchannel status word * @cmd: command-mode SCSW * @tm: transport-mode SCSW */ union scsw { struct cmd_scsw cmd; struct tm_scsw tm; } __attribute__ ((packed)); int scsw_is_tm(union scsw *scsw); u32 scsw_key(union scsw *scsw); u32 scsw_eswf(union scsw *scsw); u32 scsw_cc(union scsw *scsw); u32 scsw_ectl(union scsw *scsw); u32 scsw_pno(union scsw *scsw); u32 scsw_fctl(union scsw *scsw); u32 scsw_actl(union scsw *scsw); u32 scsw_stctl(union scsw *scsw); u32 scsw_dstat(union scsw *scsw); u32 scsw_cstat(union scsw *scsw); int scsw_is_solicited(union scsw *scsw); int scsw_is_valid_key(union scsw *scsw); int scsw_is_valid_eswf(union scsw *scsw); int scsw_is_valid_cc(union scsw *scsw); int scsw_is_valid_ectl(union scsw *scsw); int scsw_is_valid_pno(union scsw *scsw); int scsw_is_valid_fctl(union scsw *scsw); int scsw_is_valid_actl(union scsw *scsw); int scsw_is_valid_stctl(union scsw *scsw); int scsw_is_valid_dstat(union scsw *scsw); int scsw_is_valid_cstat(union scsw *scsw); int scsw_cmd_is_valid_key(union scsw *scsw); int scsw_cmd_is_valid_sctl(union scsw *scsw); int scsw_cmd_is_valid_eswf(union scsw *scsw); int scsw_cmd_is_valid_cc(union scsw *scsw); int scsw_cmd_is_valid_fmt(union scsw *scsw); int scsw_cmd_is_valid_pfch(union scsw *scsw); int scsw_cmd_is_valid_isic(union scsw *scsw); int scsw_cmd_is_valid_alcc(union scsw *scsw); int scsw_cmd_is_valid_ssi(union scsw *scsw); int scsw_cmd_is_valid_zcc(union scsw *scsw); int scsw_cmd_is_valid_ectl(union scsw *scsw); int scsw_cmd_is_valid_pno(union scsw *scsw); int scsw_cmd_is_valid_fctl(union scsw *scsw); int scsw_cmd_is_valid_actl(union scsw *scsw); int scsw_cmd_is_valid_stctl(union scsw *scsw); int scsw_cmd_is_valid_dstat(union scsw *scsw); int scsw_cmd_is_valid_cstat(union scsw *scsw); int scsw_cmd_is_solicited(union scsw *scsw); int scsw_tm_is_valid_key(union scsw *scsw); int scsw_tm_is_valid_eswf(union scsw *scsw); int scsw_tm_is_valid_cc(union scsw *scsw); int scsw_tm_is_valid_fmt(union scsw *scsw); int scsw_tm_is_valid_x(union scsw *scsw); int scsw_tm_is_valid_q(union scsw *scsw); int scsw_tm_is_valid_ectl(union scsw *scsw); int scsw_tm_is_valid_pno(union scsw *scsw); int scsw_tm_is_valid_fctl(union scsw *scsw); int scsw_tm_is_valid_actl(union scsw *scsw); int scsw_tm_is_valid_stctl(union scsw *scsw); int scsw_tm_is_valid_dstat(union scsw *scsw); int scsw_tm_is_valid_cstat(union scsw *scsw); int scsw_tm_is_valid_fcxs(union scsw *scsw); int scsw_tm_is_valid_schxs(union scsw *scsw); int scsw_tm_is_solicited(union scsw *scsw); #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 - channel command word * @cmd_code: command code * @flags: flags, like IDA adressing, etc. * @count: byte count * @cda: data address * * The ccw is the basic structure to build channel programs that perform * operations with the device or the control unit. Only Format-1 channel * command words are supported. */ struct ccw1 { __u8 cmd_code; __u8 flags; __u16 count; __u32 cda; } __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 - extended report word * @res0: reserved * @auth: authorization check * @pvrf: path-verification-required flag * @cpt: channel-path timeout * @fsavf: failing storage address validity flag * @cons: concurrent sense * @scavf: secondary ccw address validity flag * @fsaf: failing storage address format * @scnt: sense count, if @cons == %1 * @res16: reserved */ struct erw { __u32 res0 : 3; __u32 auth : 1; __u32 pvrf : 1; __u32 cpt : 1; __u32 fsavf : 1; __u32 cons : 1; __u32 scavf : 1; __u32 fsaf : 1; __u32 scnt : 6; __u32 res16 : 16; } __attribute__ ((packed)); /** * struct sublog - subchannel logout area * @res0: reserved * @esf: extended status flags * @lpum: last path used mask * @arep: ancillary report * @fvf: field-validity flags * @sacc: storage access code * @termc: termination code * @devsc: device-status check * @serr: secondary error * @ioerr: i/o-error alert * @seqc: sequence code */ struct sublog { __u32 res0 : 1; __u32 esf : 7; __u32 lpum : 8; __u32 arep : 1; __u32 fvf : 5; __u32 sacc : 2; __u32 termc : 2; __u32 devsc : 1; __u32 serr : 1; __u32 ioerr : 1; __u32 seqc : 3; } __attribute__ ((packed)); /** * struct esw0 - Format 0 Extended Status Word (ESW) * @sublog: subchannel logout * @erw: extended report word * @faddr: failing storage address * @saddr: secondary ccw address */ struct esw0 { struct sublog sublog; struct erw erw; __u32 faddr[2]; __u32 saddr; } __attribute__ ((packed)); /** * struct esw1 - Format 1 Extended Status Word (ESW) * @zero0: reserved zeros * @lpum: last path used mask * @zero16: reserved zeros * @erw: extended report word * @zeros: three fullwords of zeros */ struct esw1 { __u8 zero0; __u8 lpum; __u16 zero16; struct erw erw; __u32 zeros[3]; } __attribute__ ((packed)); /** * struct esw2 - Format 2 Extended Status Word (ESW) * @zero0: reserved zeros * @lpum: last path used mask * @dcti: device-connect-time interval * @erw: extended report word * @zeros: three fullwords of zeros */ struct esw2 { __u8 zero0; __u8 lpum; __u16 dcti; struct erw erw; __u32 zeros[3]; } __attribute__ ((packed)); /** * struct esw3 - Format 3 Extended Status Word (ESW) * @zero0: reserved zeros * @lpum: last path used mask * @res: reserved * @erw: extended report word * @zeros: three fullwords of zeros */ struct esw3 { __u8 zero0; __u8 lpum; __u16 res; struct erw erw; __u32 zeros[3]; } __attribute__ ((packed)); /** * struct irb - interruption response block * @scsw: subchannel status word * @esw: extened status word, 4 formats * @ecw: extended control word * * The irb that is handed to the device driver when an interrupt occurs. For * solicited interrupts, the common I/O layer already performs checks whether * a field is valid; a field not being valid is always passed as %0. * If a unit check occured, @ecw may contain sense data; this is retrieved * by the common I/O layer itself if the device doesn't support concurrent * sense (so that the device driver never needs to perform basic sene itself). * For unsolicited interrupts, the irb is passed as-is (expect for sense data, * if applicable). */ struct irb { union scsw scsw; union { struct esw0 esw0; struct esw1 esw1; struct esw2 esw2; struct esw3 esw3; } esw; __u8 ecw[32]; } __attribute__ ((packed,aligned(4))); /** * struct ciw - command information word (CIW) layout * @et: entry type * @reserved: reserved bits * @ct: command type * @cmd: command code * @count: command count */ struct ciw { __u32 et : 2; __u32 reserved : 2; __u32 ct : 4; __u32 cmd : 8; __u32 count : 16; } __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 ccw_dev_id - unique identifier for ccw devices * @ssid: subchannel set id * @devno: device number * * This structure is not directly based on any hardware structure. The * hardware identifies a device by its device number and its subchannel, * which is in turn identified by its id. In order to get a unique identifier * for ccw devices across subchannel sets, @struct ccw_dev_id has been * introduced. */ struct ccw_dev_id { u8 ssid; u16 devno; }; /** * ccw_device_id_is_equal() - compare two ccw_dev_ids * @dev_id1: a ccw_dev_id * @dev_id2: another ccw_dev_id * Returns: * %1 if the two structures are equal field-by-field, * %0 if not. * Context: * any */ static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1, struct ccw_dev_id *dev_id2) { if ((dev_id1->ssid == dev_id2->ssid) && (dev_id1->devno == dev_id2->devno)) return 1; return 0; } extern void wait_cons_dev(void); extern void css_schedule_reprobe(void); extern void reipl_ccw_dev(struct ccw_dev_id *id); struct cio_iplinfo { u16 devno; int is_qdio; }; extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo); /* Function from drivers/s390/cio/chsc.c */ int chsc_sstpc(void *page, unsigned int op, u16 ctrl); int chsc_sstpi(void *page, void *result, size_t size); #endif #endif