[mirror_ubuntu-artful-kernel.git] / drivers / s390 / cio / io_sch.h

#ifndef S390_IO_SCH_H
#define S390_IO_SCH_H

#include <asm/schid.h>

/*
 * command-mode operation request block
 */
struct cmd_orb {
	u32 intparm;	/* interruption parameter */
	u32 key  : 4;	/* flags, like key, suspend control, etc. */
	u32 spnd : 1;	/* suspend control */
	u32 res1 : 1;	/* reserved */
	u32 mod  : 1;	/* modification control */
	u32 sync : 1;	/* synchronize control */
	u32 fmt  : 1;	/* format control */
	u32 pfch : 1;	/* prefetch control */
	u32 isic : 1;	/* initial-status-interruption control */
	u32 alcc : 1;	/* address-limit-checking control */
	u32 ssic : 1;	/* suppress-suspended-interr. control */
	u32 res2 : 1;	/* reserved */
	u32 c64  : 1;	/* IDAW/QDIO 64 bit control  */
	u32 i2k  : 1;	/* IDAW 2/4kB block size control */
	u32 lpm  : 8;	/* logical path mask */
	u32 ils  : 1;	/* incorrect length */
	u32 zero : 6;	/* reserved zeros */
	u32 orbx : 1;	/* ORB extension control */
	u32 cpa;	/* channel program address */
}  __attribute__ ((packed, aligned(4)));

/*
 * transport-mode operation request block
 */
struct tm_orb {
	u32 intparm;
	u32 key:4;
	u32 :9;
	u32 b:1;
	u32 :2;
	u32 lpm:8;
	u32 :7;
	u32 x:1;
	u32 tcw;
	u32 prio:8;
	u32 :8;
	u32 rsvpgm:8;
	u32 :8;
	u32 :32;
	u32 :32;
	u32 :32;
	u32 :32;
}  __attribute__ ((packed, aligned(4)));

union orb {
	struct cmd_orb cmd;
	struct tm_orb tm;
}  __attribute__ ((packed, aligned(4)));

struct io_subchannel_private {
	union orb orb;		/* operation request block */
	struct ccw1 sense_ccw;	/* static ccw for sense command */
} __attribute__ ((aligned(8)));

#define to_io_private(n) ((struct io_subchannel_private *)n->private)
#define sch_get_cdev(n) (dev_get_drvdata(&n->dev))
#define sch_set_cdev(n, c) (dev_set_drvdata(&n->dev, c))

#define MAX_CIWS 8

/*
 * sense-id response buffer layout
 */
struct senseid {
	/* common part */
	u8  reserved;	/* always 0x'FF' */
	u16 cu_type;	/* control unit type */
	u8  cu_model;	/* control unit model */
	u16 dev_type;	/* device type */
	u8  dev_model;	/* device model */
	u8  unused;	/* padding byte */
	/* extended part */
	struct ciw ciw[MAX_CIWS];	/* variable # of CIWs */
}  __attribute__ ((packed, aligned(4)));

struct ccw_device_private {
	struct ccw_device *cdev;
	struct subchannel *sch;
	int state;		/* device state */
	atomic_t onoff;
	unsigned long registered;
	struct ccw_dev_id dev_id;	/* device id */
	struct subchannel_id schid;	/* subchannel number */
	u8 imask;		/* lpm mask for SNID/SID/SPGID */
	int iretry;		/* retry counter SNID/SID/SPGID */
	struct {
		unsigned int fast:1;	/* post with "channel end" */
		unsigned int repall:1;	/* report every interrupt status */
		unsigned int pgroup:1;	/* do path grouping */
		unsigned int force:1;	/* allow forced online */
	} __attribute__ ((packed)) options;
	struct {
		unsigned int pgid_single:1; /* use single path for Set PGID */
		unsigned int esid:1;	    /* Ext. SenseID supported by HW */
		unsigned int dosense:1;	    /* delayed SENSE required */
		unsigned int doverify:1;    /* delayed path verification */
		unsigned int donotify:1;    /* call notify function */
		unsigned int recog_done:1;  /* dev. recog. complete */
		unsigned int fake_irb:1;    /* deliver faked irb */
		unsigned int intretry:1;    /* retry internal operation */
	} __attribute__((packed)) flags;
	unsigned long intparm;	/* user interruption parameter */
	struct qdio_irq *qdio_data;
	struct irb irb;		/* device status */
	struct senseid senseid;	/* SenseID info */
	struct pgid pgid[8];	/* path group IDs per chpid*/
	struct ccw1 iccws[2];	/* ccws for SNID/SID/SPGID commands */
	struct work_struct kick_work;
	wait_queue_head_t wait_q;
	struct timer_list timer;
	void *cmb;			/* measurement information */
	struct list_head cmb_list;	/* list of measured devices */
	u64 cmb_start_time;		/* clock value of cmb reset */
	void *cmb_wait;			/* deferred cmb enable/disable */
};

static inline int ssch(struct subchannel_id schid, volatile union orb *addr)
{
	register struct subchannel_id reg1 asm("1") = schid;
	int ccode = -EIO;

	asm volatile(
		"	ssch	0(%2)\n"
		"0:	ipm	%0\n"
		"	srl	%0,28\n"
		"1:\n"
		EX_TABLE(0b, 1b)
		: "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
	return ccode;
}

static inline int rsch(struct subchannel_id schid)
{
	register struct subchannel_id reg1 asm("1") = schid;
	int ccode;

	asm volatile(
		"	rsch\n"
		"	ipm	%0\n"
		"	srl	%0,28"
		: "=d" (ccode) : "d" (reg1) : "cc");
	return ccode;
}

static inline int csch(struct subchannel_id schid)
{
	register struct subchannel_id reg1 asm("1") = schid;
	int ccode;

	asm volatile(
		"	csch\n"
		"	ipm	%0\n"
		"	srl	%0,28"
		: "=d" (ccode) : "d" (reg1) : "cc");
	return ccode;
}

static inline int hsch(struct subchannel_id schid)
{
	register struct subchannel_id reg1 asm("1") = schid;
	int ccode;

	asm volatile(
		"	hsch\n"
		"	ipm	%0\n"
		"	srl	%0,28"
		: "=d" (ccode) : "d" (reg1) : "cc");
	return ccode;
}

static inline int xsch(struct subchannel_id schid)
{
	register struct subchannel_id reg1 asm("1") = schid;
	int ccode;

	asm volatile(
		"	.insn	rre,0xb2760000,%1,0\n"
		"	ipm	%0\n"
		"	srl	%0,28"
		: "=d" (ccode) : "d" (reg1) : "cc");
	return ccode;
}

#endif
Commit	Line	Data
cd6b4f27 CH	1	#ifndef S390_IO_SCH_H
	2	#define S390_IO_SCH_H
	3
9d92a7e1	4	#include <asm/schid.h>
cd6b4f27 CH	5
cd6b4f27 CH	6	/*
83262d63	7	* command-mode operation request block
cd6b4f27	8	*/
83262d63	9	struct cmd_orb {
cd6b4f27 CH	10	u32 intparm; /* interruption parameter */
	11	u32 key : 4; /* flags, like key, suspend control, etc. */
	12	u32 spnd : 1; /* suspend control */
	13	u32 res1 : 1; /* reserved */
	14	u32 mod : 1; /* modification control */
	15	u32 sync : 1; /* synchronize control */
	16	u32 fmt : 1; /* format control */
	17	u32 pfch : 1; /* prefetch control */
	18	u32 isic : 1; /* initial-status-interruption control */
	19	u32 alcc : 1; /* address-limit-checking control */
	20	u32 ssic : 1; /* suppress-suspended-interr. control */
	21	u32 res2 : 1; /* reserved */
	22	u32 c64 : 1; /* IDAW/QDIO 64 bit control */
	23	u32 i2k : 1; /* IDAW 2/4kB block size control */
	24	u32 lpm : 8; /* logical path mask */
	25	u32 ils : 1; /* incorrect length */
	26	u32 zero : 6; /* reserved zeros */
	27	u32 orbx : 1; /* ORB extension control */
	28	u32 cpa; /* channel program address */
	29	} __attribute__ ((packed, aligned(4)));
	30
83262d63 PO	31	/*
	32	* transport-mode operation request block
	33	*/
	34	struct tm_orb {
	35	u32 intparm;
	36	u32 key:4;
	37	u32 :9;
	38	u32 b:1;
	39	u32 :2;
	40	u32 lpm:8;
	41	u32 :7;
	42	u32 x:1;
	43	u32 tcw;
	44	u32 prio:8;
	45	u32 :8;
	46	u32 rsvpgm:8;
	47	u32 :8;
	48	u32 :32;
	49	u32 :32;
	50	u32 :32;
	51	u32 :32;
	52	} __attribute__ ((packed, aligned(4)));
	53
	54	union orb {
	55	struct cmd_orb cmd;
	56	struct tm_orb tm;
	57	} __attribute__ ((packed, aligned(4)));
	58
cd6b4f27	59	struct io_subchannel_private {
83262d63	60	union orb orb; /* operation request block */
cd6b4f27 CH	61	struct ccw1 sense_ccw; /* static ccw for sense command */
	62	} __attribute__ ((aligned(8)));
	63
	64	#define to_io_private(n) ((struct io_subchannel_private *)n->private)
db6a6423 CH	65	#define sch_get_cdev(n) (dev_get_drvdata(&n->dev))
db6a6423 CH	66	#define sch_set_cdev(n, c) (dev_set_drvdata(&n->dev, c))
cd6b4f27 CH	67
	68	#define MAX_CIWS 8
	69
	70	/*
	71	* sense-id response buffer layout
	72	*/
	73	struct senseid {
	74	/* common part */
	75	u8 reserved; /* always 0x'FF' */
	76	u16 cu_type; /* control unit type */
	77	u8 cu_model; /* control unit model */
	78	u16 dev_type; /* device type */
	79	u8 dev_model; /* device model */
	80	u8 unused; /* padding byte */
	81	/* extended part */
	82	struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
	83	} __attribute__ ((packed, aligned(4)));
	84
	85	struct ccw_device_private {
	86	struct ccw_device *cdev;
	87	struct subchannel *sch;
	88	int state; /* device state */
	89	atomic_t onoff;
	90	unsigned long registered;
	91	struct ccw_dev_id dev_id; /* device id */
	92	struct subchannel_id schid; /* subchannel number */
	93	u8 imask; /* lpm mask for SNID/SID/SPGID */
	94	int iretry; /* retry counter SNID/SID/SPGID */
	95	struct {
	96	unsigned int fast:1; /* post with "channel end" */
	97	unsigned int repall:1; /* report every interrupt status */
	98	unsigned int pgroup:1; /* do path grouping */
	99	unsigned int force:1; /* allow forced online */
	100	} __attribute__ ((packed)) options;
	101	struct {
	102	unsigned int pgid_single:1; /* use single path for Set PGID */
	103	unsigned int esid:1; /* Ext. SenseID supported by HW */
	104	unsigned int dosense:1; /* delayed SENSE required */
	105	unsigned int doverify:1; /* delayed path verification */
	106	unsigned int donotify:1; /* call notify function */
	107	unsigned int recog_done:1; /* dev. recog. complete */
	108	unsigned int fake_irb:1; /* deliver faked irb */
	109	unsigned int intretry:1; /* retry internal operation */
	110	} __attribute__((packed)) flags;
	111	unsigned long intparm; /* user interruption parameter */
	112	struct qdio_irq *qdio_data;
	113	struct irb irb; /* device status */
	114	struct senseid senseid; /* SenseID info */
	115	struct pgid pgid[8]; /* path group IDs per chpid*/
	116	struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
	117	struct work_struct kick_work;
	118	wait_queue_head_t wait_q;
	119	struct timer_list timer;
	120	void cmb; / measurement information */
	121	struct list_head cmb_list; /* list of measured devices */
	122	u64 cmb_start_time; /* clock value of cmb reset */
	123	void cmb_wait; / deferred cmb enable/disable */
	124	};
	125
83262d63	126	static inline int ssch(struct subchannel_id schid, volatile union orb *addr)
cd6b4f27 CH	127	{
cd6b4f27 CH	128	register struct subchannel_id reg1 asm("1") = schid;
83262d63	129	int ccode = -EIO;
cd6b4f27 CH	130
	131	asm volatile(
	132	" ssch 0(%2)\n"
83262d63 PO	133	"0: ipm %0\n"
	134	" srl %0,28\n"
	135	"1:\n"
	136	EX_TABLE(0b, 1b)
	137	: "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
cd6b4f27 CH	138	return ccode;
	139	}
	140
	141	static inline int rsch(struct subchannel_id schid)
	142	{
	143	register struct subchannel_id reg1 asm("1") = schid;
	144	int ccode;
	145
	146	asm volatile(
	147	" rsch\n"
	148	" ipm %0\n"
	149	" srl %0,28"
	150	: "=d" (ccode) : "d" (reg1) : "cc");
	151	return ccode;
	152	}
	153
	154	static inline int csch(struct subchannel_id schid)
	155	{
	156	register struct subchannel_id reg1 asm("1") = schid;
	157	int ccode;
	158
	159	asm volatile(
	160	" csch\n"
	161	" ipm %0\n"
	162	" srl %0,28"
	163	: "=d" (ccode) : "d" (reg1) : "cc");
	164	return ccode;
	165	}
	166
	167	static inline int hsch(struct subchannel_id schid)
	168	{
	169	register struct subchannel_id reg1 asm("1") = schid;
	170	int ccode;
	171
	172	asm volatile(
	173	" hsch\n"
	174	" ipm %0\n"
	175	" srl %0,28"
	176	: "=d" (ccode) : "d" (reg1) : "cc");
	177	return ccode;
	178	}
	179
	180	static inline int xsch(struct subchannel_id schid)
	181	{
	182	register struct subchannel_id reg1 asm("1") = schid;
	183	int ccode;
	184
	185	asm volatile(
	186	" .insn rre,0xb2760000,%1,0\n"
	187	" ipm %0\n"
	188	" srl %0,28"
	189	: "=d" (ccode) : "d" (reg1) : "cc");
	190	return ccode;
	191	}
	192
	193	#endif