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Diffstat (limited to 'include/asm-s390/cio.h')
| -rw-r--r-- | include/asm-s390/cio.h | 514 |
1 files changed, 0 insertions, 514 deletions
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h deleted file mode 100644 index 6dccb07..0000000 --- a/include/asm-s390/cio.h +++ /dev/null @@ -1,514 +0,0 @@ -/* - * 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 -#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 |