[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / s390 / cio / cio.h

#ifndef S390_CIO_H
#define S390_CIO_H

#include <linux/mutex.h>
#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <asm/chpid.h>
#include "chsc.h"
#include "schid.h"

/*
 * path management control word
 */
struct pmcw {
	u32 intparm;		/* interruption parameter */
	u32 qf	 : 1;		/* qdio facility */
	u32 w	 : 1;
	u32 isc  : 3;		/* interruption sublass */
	u32 res5 : 3;		/* reserved zeros */
	u32 ena  : 1;		/* enabled */
	u32 lm	 : 2;		/* limit mode */
	u32 mme  : 2;		/* measurement-mode enable */
	u32 mp	 : 1;		/* multipath mode */
	u32 tf	 : 1;		/* timing facility */
	u32 dnv  : 1;		/* device number valid */
	u32 dev  : 16;		/* device number */
	u8  lpm;		/* logical path mask */
	u8  pnom;		/* path not operational mask */
	u8  lpum;		/* last path used mask */
	u8  pim;		/* path installed mask */
	u16 mbi;		/* measurement-block index */
	u8  pom;		/* path operational mask */
	u8  pam;		/* path available mask */
	u8  chpid[8];		/* CHPID 0-7 (if available) */
	u32 unused1 : 8;	/* reserved zeros */
	u32 st	    : 3;	/* subchannel type */
	u32 unused2 : 18;	/* reserved zeros */
	u32 mbfc    : 1;	/* measurement block format control */
	u32 xmwme   : 1;	/* extended measurement word mode enable */
	u32 csense  : 1;	/* concurrent sense; can be enabled ...*/
				/*  ... per MSCH, however, if facility */
				/*  ... is not installed, this results */
				/*  ... in an operand exception.       */
} __attribute__ ((packed));

/*
 * subchannel information block
 */
struct schib {
	struct pmcw pmcw;	 /* path management control word */
	union scsw scsw;	 /* subchannel status word */
	__u64 mba;               /* measurement block address */
	__u8 mda[4];		 /* model dependent area */
} __attribute__ ((packed,aligned(4)));

/* subchannel data structure used by I/O subroutines */
struct subchannel {
	struct subchannel_id schid;
	spinlock_t *lock;	/* subchannel lock */
	struct mutex reg_mutex;
	enum {
		SUBCHANNEL_TYPE_IO = 0,
		SUBCHANNEL_TYPE_CHSC = 1,
		SUBCHANNEL_TYPE_MSG = 2,
		SUBCHANNEL_TYPE_ADM = 3,
	} st;			/* subchannel type */

	struct {
		unsigned int suspend:1; /* allow suspend */
		unsigned int prefetch:1;/* deny prefetch */
		unsigned int inter:1;   /* suppress intermediate interrupts */
	} __attribute__ ((packed)) options;

	__u8 vpm;		/* verified path mask */
	__u8 lpm;		/* logical path mask */
	__u8 opm;               /* operational path mask */
	struct schib schib;	/* subchannel information block */
	int isc; /* desired interruption subclass */
	struct chsc_ssd_info ssd_info;	/* subchannel description */
	struct device dev;	/* entry in device tree */
	struct css_driver *driver;
	void *private; /* private per subchannel type data */
} __attribute__ ((aligned(8)));

#define IO_INTERRUPT_TYPE	   0 /* I/O interrupt type */

#define to_subchannel(n) container_of(n, struct subchannel, dev)

extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
extern int cio_enable_subchannel(struct subchannel *, u32);
extern int cio_disable_subchannel (struct subchannel *);
extern int cio_cancel (struct subchannel *);
extern int cio_clear (struct subchannel *);
extern int cio_resume (struct subchannel *);
extern int cio_halt (struct subchannel *);
extern int cio_start (struct subchannel *, struct ccw1 *, __u8);
extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8);
extern int cio_cancel (struct subchannel *);
extern int cio_set_options (struct subchannel *, int);
extern int cio_get_options (struct subchannel *);
extern int cio_modify (struct subchannel *);

int cio_create_sch_lock(struct subchannel *);
void do_adapter_IO(void);
void do_IRQ(struct pt_regs *);

/* Use with care. */
#ifdef CONFIG_CCW_CONSOLE
extern struct subchannel *cio_probe_console(void);
extern void cio_release_console(void);
extern int cio_is_console(struct subchannel_id);
extern struct subchannel *cio_get_console_subchannel(void);
extern spinlock_t * cio_get_console_lock(void);
extern void *cio_get_console_priv(void);
#else
#define cio_is_console(schid) 0
#define cio_get_console_subchannel() NULL
#define cio_get_console_lock() NULL
#define cio_get_console_priv() NULL
#endif

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef S390_CIO_H
	2	#define S390_CIO_H
	3
6ab4879a	4	#include <linux/mutex.h>
e5854a58	5	#include <linux/device.h>
7e9db9ea	6	#include <linux/mod_devicetable.h>
7ad6a249 PO	7	#include <asm/chpid.h>
	8	#include "chsc.h"
	9	#include "schid.h"
1da177e4 LT	10
	11	/*
	12	* path management control word
	13	*/
	14	struct pmcw {
cd6b4f27 CH	15	u32 intparm; /* interruption parameter */
cd6b4f27 CH	16	u32 qf : 1; /* qdio facility */
b3a686f4	17	u32 w : 1;
cd6b4f27 CH	18	u32 isc : 3; /* interruption sublass */
	19	u32 res5 : 3; /* reserved zeros */
	20	u32 ena : 1; /* enabled */
	21	u32 lm : 2; /* limit mode */
	22	u32 mme : 2; /* measurement-mode enable */
	23	u32 mp : 1; /* multipath mode */
	24	u32 tf : 1; /* timing facility */
	25	u32 dnv : 1; /* device number valid */
	26	u32 dev : 16; /* device number */
	27	u8 lpm; /* logical path mask */
	28	u8 pnom; /* path not operational mask */
	29	u8 lpum; /* last path used mask */
	30	u8 pim; /* path installed mask */
	31	u16 mbi; /* measurement-block index */
	32	u8 pom; /* path operational mask */
	33	u8 pam; /* path available mask */
	34	u8 chpid[8]; /* CHPID 0-7 (if available) */
	35	u32 unused1 : 8; /* reserved zeros */
	36	u32 st : 3; /* subchannel type */
	37	u32 unused2 : 18; /* reserved zeros */
	38	u32 mbfc : 1; /* measurement block format control */
	39	u32 xmwme : 1; /* extended measurement word mode enable */
	40	u32 csense : 1; /* concurrent sense; can be enabled ...*/
1da177e4 LT	41	/* ... per MSCH, however, if facility */
	42	/* ... is not installed, this results */
	43	/* ... in an operand exception. */
	44	} __attribute__ ((packed));
	45
	46	/*
	47	* subchannel information block
	48	*/
	49	struct schib {
	50	struct pmcw pmcw; /* path management control word */
23d805b6	51	union scsw scsw; /* subchannel status word */
1da177e4 LT	52	__u64 mba; /* measurement block address */
	53	__u8 mda[4]; /* model dependent area */
	54	} __attribute__ ((packed,aligned(4)));
	55
1da177e4 LT	56	/* subchannel data structure used by I/O subroutines */
1da177e4 LT	57	struct subchannel {
a8237fc4	58	struct subchannel_id schid;
2ec22984	59	spinlock_t lock; / subchannel lock */
6ab4879a	60	struct mutex reg_mutex;
1da177e4 LT	61	enum {
	62	SUBCHANNEL_TYPE_IO = 0,
	63	SUBCHANNEL_TYPE_CHSC = 1,
b279a4f5	64	SUBCHANNEL_TYPE_MSG = 2,
1da177e4 LT	65	SUBCHANNEL_TYPE_ADM = 3,
	66	} st; /* subchannel type */
	67
	68	struct {
	69	unsigned int suspend:1; /* allow suspend */
	70	unsigned int prefetch:1;/* deny prefetch */
	71	unsigned int inter:1; /* suppress intermediate interrupts */
	72	} __attribute__ ((packed)) options;
	73
	74	__u8 vpm; /* verified path mask */
	75	__u8 lpm; /* logical path mask */
	76	__u8 opm; /* operational path mask */
	77	struct schib schib; /* subchannel information block */
edf22096	78	int isc; /* desired interruption subclass */
7ad6a249	79	struct chsc_ssd_info ssd_info; /* subchannel description */
1da177e4 LT	80	struct device dev; /* entry in device tree */
1da177e4 LT	81	struct css_driver *driver;
cd6b4f27	82	void private; / private per subchannel type data */
1da177e4 LT	83	} __attribute__ ((aligned(8)));
	84
	85	#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */
	86
	87	#define to_subchannel(n) container_of(n, struct subchannel, dev)
	88
a8237fc4	89	extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
edf22096	90	extern int cio_enable_subchannel(struct subchannel *, u32);
1da177e4 LT	91	extern int cio_disable_subchannel (struct subchannel *);
	92	extern int cio_cancel (struct subchannel *);
	93	extern int cio_clear (struct subchannel *);
	94	extern int cio_resume (struct subchannel *);
	95	extern int cio_halt (struct subchannel *);
	96	extern int cio_start (struct subchannel , struct ccw1 , __u8);
	97	extern int cio_start_key (struct subchannel , struct ccw1 , __u8, __u8);
	98	extern int cio_cancel (struct subchannel *);
	99	extern int cio_set_options (struct subchannel *, int);
	100	extern int cio_get_options (struct subchannel *);
	101	extern int cio_modify (struct subchannel *);
a8237fc4	102
d7b5a4c9	103	int cio_create_sch_lock(struct subchannel *);
4e8e56c6	104	void do_adapter_IO(void);
a806170e	105	void do_IRQ(struct pt_regs *);
d7b5a4c9	106
1da177e4 LT	107	/* Use with care. */
	108	#ifdef CONFIG_CCW_CONSOLE
	109	extern struct subchannel *cio_probe_console(void);
	110	extern void cio_release_console(void);
a8237fc4	111	extern int cio_is_console(struct subchannel_id);
1da177e4	112	extern struct subchannel *cio_get_console_subchannel(void);
2ec22984	113	extern spinlock_t * cio_get_console_lock(void);
cd6b4f27	114	extern void *cio_get_console_priv(void);
1da177e4	115	#else
a8237fc4	116	#define cio_is_console(schid) 0
1da177e4	117	#define cio_get_console_subchannel() NULL
cd6b4f27 CH	118	#define cio_get_console_lock() NULL
cd6b4f27 CH	119	#define cio_get_console_priv() NULL
1da177e4 LT	120	#endif
1da177e4 LT	121
1da177e4	122	#endif