include/asm-s390/cio.h - linux/kernel/git/gregkh/char-misc - Git at Google

 /*
  *  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)));

 struct ccw_dev_id {
 	u8 ssid;
 	u16 devno;
 };

 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 int diag210(struct diag210 *addr);

 extern void wait_cons_dev(void);

 extern void css_schedule_reprobe(void);

 extern void reipl_ccw_dev(struct ccw_dev_id *id);

 #endif

 #endif
	/*
	* 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)));

	struct ccw_dev_id {
	u8 ssid;
	u16 devno;
	};

	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 int diag210(struct diag210 *addr);

	extern void wait_cons_dev(void);

	extern void css_schedule_reprobe(void);

	extern void reipl_ccw_dev(struct ccw_dev_id *id);

	#endif

	#endif