[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-s390 / cio.h

/*
 *  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);

struct cio_iplinfo {
	u16 devno;
	int is_qdio;
};

extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo);

#endif

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* include/asm-s390/cio.h
	3	* include/asm-s390x/cio.h
	4	*
	5	* Common interface for I/O on S/390
	6	*/
	7	#ifndef _ASM_S390_CIO_H_
	8	#define _ASM_S390_CIO_H_
	9
	10	#include <linux/spinlock.h>
	11	#include <asm/types.h>
	12
	13	#ifdef __KERNEL__
	14
	15	#define LPM_ANYPATH 0xff
	16
	17	/*
	18	* subchannel status word
	19	*/
	20	struct scsw {
	21	__u32 key : 4; /* subchannel key */
	22	__u32 sctl : 1; /* suspend control */
	23	__u32 eswf : 1; /* ESW format */
	24	__u32 cc : 2; /* deferred condition code */
	25	__u32 fmt : 1; /* format */
	26	__u32 pfch : 1; /* prefetch */
	27	__u32 isic : 1; /* initial-status interruption control */
	28	__u32 alcc : 1; /* address-limit checking control */
	29	__u32 ssi : 1; /* supress-suspended interruption */
	30	__u32 zcc : 1; /* zero condition code */
	31	__u32 ectl : 1; /* extended control */
	32	__u32 pno : 1; /* path not operational */
	33	__u32 res : 1; /* reserved */
	34	__u32 fctl : 3; /* function control */
	35	__u32 actl : 7; /* activity control */
	36	__u32 stctl : 5; /* status control */
	37	__u32 cpa; /* channel program address */
	38	__u32 dstat : 8; /* device status */
	39	__u32 cstat : 8; /* subchannel status */
	40	__u32 count : 16; /* residual count */
	41	} __attribute__ ((packed));
	42
	43	#define SCSW_FCTL_CLEAR_FUNC 0x1
	44	#define SCSW_FCTL_HALT_FUNC 0x2
	45	#define SCSW_FCTL_START_FUNC 0x4
	46
	47	#define SCSW_ACTL_SUSPENDED 0x1
	48	#define SCSW_ACTL_DEVACT 0x2
	49	#define SCSW_ACTL_SCHACT 0x4
	50	#define SCSW_ACTL_CLEAR_PEND 0x8
	51	#define SCSW_ACTL_HALT_PEND 0x10
	52	#define SCSW_ACTL_START_PEND 0x20
	53	#define SCSW_ACTL_RESUME_PEND 0x40
	54
	55	#define SCSW_STCTL_STATUS_PEND 0x1
	56	#define SCSW_STCTL_SEC_STATUS 0x2
	57	#define SCSW_STCTL_PRIM_STATUS 0x4
	58	#define SCSW_STCTL_INTER_STATUS 0x8
	59	#define SCSW_STCTL_ALERT_STATUS 0x10
	60
	61	#define DEV_STAT_ATTENTION 0x80
	62	#define DEV_STAT_STAT_MOD 0x40
	63	#define DEV_STAT_CU_END 0x20
	64	#define DEV_STAT_BUSY 0x10
65	#define DEV_STAT_CHN_END 0x08
66	#define DEV_STAT_DEV_END 0x04
67	#define DEV_STAT_UNIT_CHECK 0x02
68	#define DEV_STAT_UNIT_EXCEP 0x01
69
70	#define SCHN_STAT_PCI 0x80
71	#define SCHN_STAT_INCORR_LEN 0x40
72	#define SCHN_STAT_PROG_CHECK 0x20
73	#define SCHN_STAT_PROT_CHECK 0x10
74	#define SCHN_STAT_CHN_DATA_CHK 0x08
75	#define SCHN_STAT_CHN_CTRL_CHK 0x04
76	#define SCHN_STAT_INTF_CTRL_CHK 0x02
77	#define SCHN_STAT_CHAIN_CHECK 0x01
78
79	/*
80	* architectured values for first sense byte
81	*/
82	#define SNS0_CMD_REJECT 0x80
83	#define SNS_CMD_REJECT SNS0_CMD_REJEC
84	#define SNS0_INTERVENTION_REQ 0x40
85	#define SNS0_BUS_OUT_CHECK 0x20
86	#define SNS0_EQUIPMENT_CHECK 0x10
87	#define SNS0_DATA_CHECK 0x08
88	#define SNS0_OVERRUN 0x04
89	#define SNS0_INCOMPL_DOMAIN 0x01
90
91	/*
92	* architectured values for second sense byte
93	*/
94	#define SNS1_PERM_ERR 0x80
95	#define SNS1_INV_TRACK_FORMAT 0x40
96	#define SNS1_EOC 0x20
97	#define SNS1_MESSAGE_TO_OPER 0x10
98	#define SNS1_NO_REC_FOUND 0x08
99	#define SNS1_FILE_PROTECTED 0x04
100	#define SNS1_WRITE_INHIBITED 0x02
101	#define SNS1_INPRECISE_END 0x01
102
103	/*
104	* architectured values for third sense byte
105	*/
106	#define SNS2_REQ_INH_WRITE 0x80
107	#define SNS2_CORRECTABLE 0x40
108	#define SNS2_FIRST_LOG_ERR 0x20
109	#define SNS2_ENV_DATA_PRESENT 0x10
110	#define SNS2_INPRECISE_END 0x04
111
112	struct ccw1 {
113	__u8 cmd_code; /* command code */
114	__u8 flags; /* flags, like IDA addressing, etc. */
115	__u16 count; /* byte count */
116	__u32 cda; /* data address */
117	} __attribute__ ((packed,aligned(8)));
118
119	#define CCW_FLAG_DC 0x80
120	#define CCW_FLAG_CC 0x40
121	#define CCW_FLAG_SLI 0x20
122	#define CCW_FLAG_SKIP 0x10
123	#define CCW_FLAG_PCI 0x08
124	#define CCW_FLAG_IDA 0x04
125	#define CCW_FLAG_SUSPEND 0x02
126
127	#define CCW_CMD_READ_IPL 0x02
128	#define CCW_CMD_NOOP 0x03
129	#define CCW_CMD_BASIC_SENSE 0x04
130	#define CCW_CMD_TIC 0x08
131	#define CCW_CMD_STLCK 0x14
132	#define CCW_CMD_SENSE_PGID 0x34
133	#define CCW_CMD_SUSPEND_RECONN 0x5B
134	#define CCW_CMD_RDC 0x64
135	#define CCW_CMD_RELEASE 0x94
136	#define CCW_CMD_SET_PGID 0xAF
137	#define CCW_CMD_SENSE_ID 0xE4
138	#define CCW_CMD_DCTL 0xF3
139
140	#define SENSE_MAX_COUNT 0x20
141
142	struct erw {
143	__u32 res0 : 3; /* reserved */
144	__u32 auth : 1; /* Authorization check */
145	__u32 pvrf : 1; /* path-verification-required flag */
146	__u32 cpt : 1; /* channel-path timeout */
147	__u32 fsavf : 1; /* Failing storage address validity flag */
148	__u32 cons : 1; /* concurrent-sense */
149	__u32 scavf : 1; /* Secondary ccw address validity flag */
150	__u32 fsaf : 1; /* Failing storage address format */
151	__u32 scnt : 6; /* sense count if cons == 1 */
152	__u32 res16 : 16; /* reserved */
153	} __attribute__ ((packed));
154
155	/*
156	* subchannel logout area
157	*/
158	struct sublog {
159	__u32 res0 : 1; /* reserved */
160	__u32 esf : 7; /* extended status flags */
161	__u32 lpum : 8; /* last path used mask */
162	__u32 arep : 1; /* ancillary report */
163	__u32 fvf : 5; /* field-validity flags */
164	__u32 sacc : 2; /* storage access code */
165	__u32 termc : 2; /* termination code */
166	__u32 devsc : 1; /* device-status check */
167	__u32 serr : 1; /* secondary error */
168	__u32 ioerr : 1; /* i/o-error alert */
169	__u32 seqc : 3; /* sequence code */
170	} __attribute__ ((packed));
171
172	/*
173	* Format 0 Extended Status Word (ESW)
174	*/
175	struct esw0 {
176	struct sublog sublog; /* subchannel logout */
177	struct erw erw; /* extended report word */
178	__u32 faddr[2]; /* failing storage address */
179	__u32 saddr; /* secondary ccw address */
180	} __attribute__ ((packed));
181
182	/*
183	* Format 1 Extended Status Word (ESW)
184	*/
185	struct esw1 {
186	__u8 zero0; /* reserved zeros */
187	__u8 lpum; /* last path used mask */
188	__u16 zero16; /* reserved zeros */
189	struct erw erw; /* extended report word */
190	__u32 zeros[3]; /* 2 fullwords of zeros */
191	} __attribute__ ((packed));
192
193	/*
194	* Format 2 Extended Status Word (ESW)
195	*/
196	struct esw2 {
197	__u8 zero0; /* reserved zeros */
198	__u8 lpum; /* last path used mask */
199	__u16 dcti; /* device-connect-time interval */
200	struct erw erw; /* extended report word */
201	__u32 zeros[3]; /* 2 fullwords of zeros */
202	} __attribute__ ((packed));
203
204	/*
205	* Format 3 Extended Status Word (ESW)
206	*/
207	struct esw3 {
208	__u8 zero0; /* reserved zeros */
209	__u8 lpum; /* last path used mask */
210	__u16 res; /* reserved */
211	struct erw erw; /* extended report word */
212	__u32 zeros[3]; /* 2 fullwords of zeros */
213	} __attribute__ ((packed));
214
215	/*
216	* interruption response block
217	*/
218	struct irb {
219	struct scsw scsw; /* subchannel status word */
220	union { /* extended status word, 4 formats */
221	struct esw0 esw0;
222	struct esw1 esw1;
223	struct esw2 esw2;
224	struct esw3 esw3;
225	} esw;
226	__u8 ecw[32]; /* extended control word */
227	} __attribute__ ((packed,aligned(4)));
228
229	/*
230	* command information word (CIW) layout
231	*/
232	struct ciw {
233	__u32 et : 2; /* entry type */
234	__u32 reserved : 2; /* reserved */
235	__u32 ct : 4; /* command type */
236	__u32 cmd : 8; /* command */
237	__u32 count : 16; /* coun */
238	} __attribute__ ((packed));
239
240	#define CIW_TYPE_RCD 0x0 /* read configuration data */
241	#define CIW_TYPE_SII 0x1 /* set interface identifier */
242	#define CIW_TYPE_RNI 0x2 /* read node identifier */
243
244	/*
245	* Flags used as input parameters for do_IO()
246	*/
247	#define DOIO_ALLOW_SUSPEND 0x0001 /* allow for channel prog. suspend */
248	#define DOIO_DENY_PREFETCH 0x0002 /* don't allow for CCW prefetch */
249	#define DOIO_SUPPRESS_INTER 0x0004 /* suppress intermediate inter. */
250	/* ... for suspended CCWs */
251	/* Device or subchannel gone. */
252	#define CIO_GONE 0x0001
253	/* No path to device. */
254	#define CIO_NO_PATH 0x0002
255	/* Device has appeared. */
256	#define CIO_OPER 0x0004
257	/* Sick revalidation of device. */
258	#define CIO_REVALIDATE 0x0008
259
260	struct diag210 {
261	__u16 vrdcdvno : 16; /* device number (input) */
262	__u16 vrdclen : 16; /* data block length (input) */
263	__u32 vrdcvcla : 8; /* virtual device class (output) */
264	__u32 vrdcvtyp : 8; /* virtual device type (output) */
265	__u32 vrdcvsta : 8; /* virtual device status (output) */
266	__u32 vrdcvfla : 8; /* virtual device flags (output) */
267	__u32 vrdcrccl : 8; /* real device class (output) */
268	__u32 vrdccrty : 8; /* real device type (output) */
269	__u32 vrdccrmd : 8; /* real device model (output) */
270	__u32 vrdccrft : 8; /* real device feature (output) */
271	} __attribute__ ((packed,aligned(4)));
272
ff6b8ea6 MH	273	struct ccw_dev_id {
	274	u8 ssid;
	275	u16 devno;
	276	};
	277
78964268 CH	278	static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1,
	279	struct ccw_dev_id *dev_id2)
	280	{
ce26a853 CH	281	if ((dev_id1->ssid == dev_id2->ssid) &&
	282	(dev_id1->devno == dev_id2->devno))
	283	return 1;
	284	return 0;
78964268 CH	285	}
78964268 CH	286
1da177e4 LT	287	extern int diag210(struct diag210 *addr);
	288
	289	extern void wait_cons_dev(void);
	290
40154b82 PO	291	extern void css_schedule_reprobe(void);
40154b82 PO	292
ff6b8ea6 MH	293	extern void reipl_ccw_dev(struct ccw_dev_id *id);
ff6b8ea6 MH	294
6fc321fd HC	295	struct cio_iplinfo {
	296	u16 devno;
	297	int is_qdio;
	298	};
	299
	300	extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo);
	301
1da177e4 LT	302	#endif
	303
	304	#endif