+++ /dev/null
-/*
- * 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
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