[net-next-2.6.git] / arch / s390 / include / asm / dasd.h

/* 
 * File...........: linux/drivers/s390/block/dasd.c
 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
 * Bugreports.to..: <Linux390@de.ibm.com>
 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
 * EMC Symmetrix ioctl Copyright EMC Corporation, 2008
 * Author.........: Nigel Hislop <hislop_nigel@emc.com>
 *
 * This file is the interface of the DASD device driver, which is exported to user space
 * any future changes wrt the API will result in a change of the APIVERSION reported
 * to userspace by the DASDAPIVER-ioctl
 *
 */

#ifndef DASD_H
#define DASD_H
#include <linux/types.h>
#include <linux/ioctl.h>

#define DASD_IOCTL_LETTER 'D'

#define DASD_API_VERSION 6

/* 
 * struct dasd_information2_t
 * represents any data about the device, which is visible to userspace.
 *  including foramt and featueres.
 */
typedef struct dasd_information2_t {
        unsigned int devno;         /* S/390 devno */
        unsigned int real_devno;    /* for aliases */
        unsigned int schid;         /* S/390 subchannel identifier */
        unsigned int cu_type  : 16; /* from SenseID */
        unsigned int cu_model :  8; /* from SenseID */
        unsigned int dev_type : 16; /* from SenseID */
        unsigned int dev_model : 8; /* from SenseID */
        unsigned int open_count; 
        unsigned int req_queue_len; 
        unsigned int chanq_len;     /* length of chanq */
        char type[4];               /* from discipline.name, 'none' for unknown */
        unsigned int status;        /* current device level */
        unsigned int label_block;   /* where to find the VOLSER */
        unsigned int FBA_layout;    /* fixed block size (like AIXVOL) */
        unsigned int characteristics_size;
        unsigned int confdata_size;
        char characteristics[64];   /* from read_device_characteristics */
        char configuration_data[256]; /* from read_configuration_data */
        unsigned int format;          /* format info like formatted/cdl/ldl/... */
        unsigned int features;        /* dasd features like 'ro',...            */
        unsigned int reserved0;       /* reserved for further use ,...          */
        unsigned int reserved1;       /* reserved for further use ,...          */
        unsigned int reserved2;       /* reserved for further use ,...          */
        unsigned int reserved3;       /* reserved for further use ,...          */
        unsigned int reserved4;       /* reserved for further use ,...          */
        unsigned int reserved5;       /* reserved for further use ,...          */
        unsigned int reserved6;       /* reserved for further use ,...          */
        unsigned int reserved7;       /* reserved for further use ,...          */
} dasd_information2_t;

/*
 * values to be used for dasd_information_t.format
 * 0x00: NOT formatted
 * 0x01: Linux disc layout
 * 0x02: Common disc layout
 */
#define DASD_FORMAT_NONE 0
#define DASD_FORMAT_LDL  1
#define DASD_FORMAT_CDL  2
/*
 * values to be used for dasd_information_t.features
 * 0x00: default features
 * 0x01: readonly (ro)
 * 0x02: use diag discipline (diag)
 * 0x04: set the device initially online (internal use only)
 * 0x08: enable ERP related logging
 */
#define DASD_FEATURE_DEFAULT	     0x00
#define DASD_FEATURE_READONLY	     0x01
#define DASD_FEATURE_USEDIAG	     0x02
#define DASD_FEATURE_INITIAL_ONLINE  0x04
#define DASD_FEATURE_ERPLOG	     0x08
#define DASD_FEATURE_FAILFAST	     0x10

#define DASD_PARTN_BITS 2

/* 
 * struct dasd_information_t
 * represents any data about the data, which is visible to userspace
 */
typedef struct dasd_information_t {
        unsigned int devno;         /* S/390 devno */
        unsigned int real_devno;    /* for aliases */
        unsigned int schid;         /* S/390 subchannel identifier */
        unsigned int cu_type  : 16; /* from SenseID */
        unsigned int cu_model :  8; /* from SenseID */
        unsigned int dev_type : 16; /* from SenseID */
        unsigned int dev_model : 8; /* from SenseID */
        unsigned int open_count; 
        unsigned int req_queue_len; 
        unsigned int chanq_len;     /* length of chanq */
        char type[4];               /* from discipline.name, 'none' for unknown */
        unsigned int status;        /* current device level */
        unsigned int label_block;   /* where to find the VOLSER */
        unsigned int FBA_layout;    /* fixed block size (like AIXVOL) */
        unsigned int characteristics_size;
        unsigned int confdata_size;
        char characteristics[64];   /* from read_device_characteristics */
        char configuration_data[256]; /* from read_configuration_data */
} dasd_information_t;

/*
 * Read Subsystem Data - Performance Statistics
 */ 
typedef struct dasd_rssd_perf_stats_t {
	unsigned char  invalid:1;
	unsigned char  format:3;
	unsigned char  data_format:4;
	unsigned char  unit_address;
	unsigned short device_status;
	unsigned int   nr_read_normal;
	unsigned int   nr_read_normal_hits;
	unsigned int   nr_write_normal;
	unsigned int   nr_write_fast_normal_hits;
	unsigned int   nr_read_seq;
	unsigned int   nr_read_seq_hits;
	unsigned int   nr_write_seq;
	unsigned int   nr_write_fast_seq_hits;
	unsigned int   nr_read_cache;
	unsigned int   nr_read_cache_hits;
	unsigned int   nr_write_cache;
	unsigned int   nr_write_fast_cache_hits;
	unsigned int   nr_inhibit_cache;
	unsigned int   nr_bybass_cache;
	unsigned int   nr_seq_dasd_to_cache;
	unsigned int   nr_dasd_to_cache;
	unsigned int   nr_cache_to_dasd;
	unsigned int   nr_delayed_fast_write;
	unsigned int   nr_normal_fast_write;
	unsigned int   nr_seq_fast_write;
	unsigned int   nr_cache_miss;
	unsigned char  status2;
	unsigned int   nr_quick_write_promotes;
	unsigned char  reserved;
	unsigned short ssid;
	unsigned char  reseved2[96];
} __attribute__((packed)) dasd_rssd_perf_stats_t;

/* 
 * struct profile_info_t
 * holds the profinling information 
 */
typedef struct dasd_profile_info_t {
        unsigned int dasd_io_reqs;	 /* number of requests processed at all */
        unsigned int dasd_io_sects;	 /* number of sectors processed at all */
        unsigned int dasd_io_secs[32];	 /* histogram of request's sizes */
        unsigned int dasd_io_times[32];	 /* histogram of requests's times */
        unsigned int dasd_io_timps[32];	 /* histogram of requests's times per sector */
        unsigned int dasd_io_time1[32];	 /* histogram of time from build to start */
        unsigned int dasd_io_time2[32];	 /* histogram of time from start to irq */
        unsigned int dasd_io_time2ps[32]; /* histogram of time from start to irq */
        unsigned int dasd_io_time3[32];	 /* histogram of time from irq to end */
        unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */
} dasd_profile_info_t;

/*
 * struct format_data_t
 * represents all data necessary to format a dasd
 */
typedef struct format_data_t {
	unsigned int start_unit; /* from track */
	unsigned int stop_unit;  /* to track */
	unsigned int blksize;	 /* sectorsize */
	unsigned int intensity;
} format_data_t;

/*
 * values to be used for format_data_t.intensity
 * 0/8: normal format
 * 1/9: also write record zero
 * 3/11: also write home address
 * 4/12: invalidate track
 */
#define DASD_FMT_INT_FMT_R0 1 /* write record zero */
#define DASD_FMT_INT_FMT_HA 2 /* write home address, also set FMT_R0 ! */
#define DASD_FMT_INT_INVAL  4 /* invalidate tracks */
#define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */


/* 
 * struct attrib_data_t
 * represents the operation (cache) bits for the device.
 * Used in DE to influence caching of the DASD.
 */
typedef struct attrib_data_t {
	unsigned char operation:3;     /* cache operation mode */
	unsigned char reserved:5;      /* cache operation mode */
	__u16         nr_cyl;          /* no of cyliners for read ahaed */
	__u8          reserved2[29];   /* for future use */
} __attribute__ ((packed)) attrib_data_t;

/* definition of operation (cache) bits within attributes of DE */
#define DASD_NORMAL_CACHE  0x0
#define DASD_BYPASS_CACHE  0x1
#define DASD_INHIBIT_LOAD  0x2
#define DASD_SEQ_ACCESS    0x3
#define DASD_SEQ_PRESTAGE  0x4
#define DASD_REC_ACCESS    0x5

/*
 * Perform EMC Symmetrix I/O
 */
typedef struct dasd_symmio_parms {
	unsigned char reserved[8];	/* compat with older releases */
	unsigned long long psf_data;	/* char * cast to u64 */
	unsigned long long rssd_result; /* char * cast to u64 */
	int psf_data_len;
	int rssd_result_len;
} __attribute__ ((packed)) dasd_symmio_parms_t;

/*
 * Data returned by Sense Path Group ID (SNID)
 */
struct dasd_snid_data {
	struct {
		__u8 group:2;
		__u8 reserve:2;
		__u8 mode:1;
		__u8 res:3;
	} __attribute__ ((packed)) path_state;
	__u8 pgid[11];
} __attribute__ ((packed));

struct dasd_snid_ioctl_data {
	struct dasd_snid_data data;
	__u8 path_mask;
} __attribute__ ((packed));


/********************************************************************************
 * SECTION: Definition of IOCTLs
 *
 * Here ist how the ioctl-nr should be used:
 *    0 -   31   DASD driver itself
 *   32 -  239   still open
 *  240 -  255   reserved for EMC 
 *******************************************************************************/

/* Disable the volume (for Linux) */
#define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0) 
/* Enable the volume (for Linux) */
#define BIODASDENABLE  _IO(DASD_IOCTL_LETTER,1)  
/* Issue a reserve/release command, rsp. */
#define BIODASDRSRV    _IO(DASD_IOCTL_LETTER,2) /* reserve */
#define BIODASDRLSE    _IO(DASD_IOCTL_LETTER,3) /* release */
#define BIODASDSLCK    _IO(DASD_IOCTL_LETTER,4) /* steal lock */
/* reset profiling information of a device */
#define BIODASDPRRST   _IO(DASD_IOCTL_LETTER,5)
/* Quiesce IO on device */
#define BIODASDQUIESCE _IO(DASD_IOCTL_LETTER,6) 
/* Resume IO on device */
#define BIODASDRESUME  _IO(DASD_IOCTL_LETTER,7) 


/* retrieve API version number */
#define DASDAPIVER     _IOR(DASD_IOCTL_LETTER,0,int)
/* Get information on a dasd device */
#define BIODASDINFO    _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
/* retrieve profiling information of a device */
#define BIODASDPRRD    _IOR(DASD_IOCTL_LETTER,2,dasd_profile_info_t)
/* Get information on a dasd device (enhanced) */
#define BIODASDINFO2   _IOR(DASD_IOCTL_LETTER,3,dasd_information2_t)
/* Performance Statistics Read */
#define BIODASDPSRD    _IOR(DASD_IOCTL_LETTER,4,dasd_rssd_perf_stats_t)
/* Get Attributes (cache operations) */
#define BIODASDGATTR   _IOR(DASD_IOCTL_LETTER,5,attrib_data_t) 


/* #define BIODASDFORMAT  _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */
#define BIODASDFMT     _IOW(DASD_IOCTL_LETTER,1,format_data_t) 
/* Set Attributes (cache operations) */
#define BIODASDSATTR   _IOW(DASD_IOCTL_LETTER,2,attrib_data_t) 

/* Get Sense Path Group ID (SNID) data */
#define BIODASDSNID    _IOWR(DASD_IOCTL_LETTER, 1, struct dasd_snid_ioctl_data)

#define BIODASDSYMMIO  _IOWR(DASD_IOCTL_LETTER, 240, dasd_symmio_parms_t)

#endif				/* DASD_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* File...........: linux/drivers/s390/block/dasd.c
	3	* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
	4	* Bugreports.to..: <Linux390@de.ibm.com>
	5	* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
ab1d848f NH	6	* EMC Symmetrix ioctl Copyright EMC Corporation, 2008
ab1d848f NH	7	* Author.........: Nigel Hislop <hislop_nigel@emc.com>
1da177e4 LT	8	*
	9	* This file is the interface of the DASD device driver, which is exported to user space
	10	* any future changes wrt the API will result in a change of the APIVERSION reported
	11	* to userspace by the DASDAPIVER-ioctl
	12	*
1da177e4 LT	13	*/
	14
	15	#ifndef DASD_H
	16	#define DASD_H
0680ba01	17	#include <linux/types.h>
1da177e4 LT	18	#include <linux/ioctl.h>
	19
	20	#define DASD_IOCTL_LETTER 'D'
	21
	22	#define DASD_API_VERSION 6
	23
	24	/*
	25	* struct dasd_information2_t
	26	* represents any data about the device, which is visible to userspace.
	27	* including foramt and featueres.
	28	*/
	29	typedef struct dasd_information2_t {
	30	unsigned int devno; /* S/390 devno */
	31	unsigned int real_devno; /* for aliases */
	32	unsigned int schid; /* S/390 subchannel identifier */
	33	unsigned int cu_type : 16; /* from SenseID */
	34	unsigned int cu_model : 8; /* from SenseID */
	35	unsigned int dev_type : 16; /* from SenseID */
	36	unsigned int dev_model : 8; /* from SenseID */
	37	unsigned int open_count;
	38	unsigned int req_queue_len;
	39	unsigned int chanq_len; /* length of chanq */
	40	char type[4]; /* from discipline.name, 'none' for unknown */
	41	unsigned int status; /* current device level */
	42	unsigned int label_block; /* where to find the VOLSER */
	43	unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
	44	unsigned int characteristics_size;
	45	unsigned int confdata_size;
	46	char characteristics[64]; /* from read_device_characteristics */
	47	char configuration_data[256]; /* from read_configuration_data */
	48	unsigned int format; /* format info like formatted/cdl/ldl/... */
	49	unsigned int features; /* dasd features like 'ro',... */
	50	unsigned int reserved0; /* reserved for further use ,... */
	51	unsigned int reserved1; /* reserved for further use ,... */
	52	unsigned int reserved2; /* reserved for further use ,... */
	53	unsigned int reserved3; /* reserved for further use ,... */
	54	unsigned int reserved4; /* reserved for further use ,... */
	55	unsigned int reserved5; /* reserved for further use ,... */
	56	unsigned int reserved6; /* reserved for further use ,... */
	57	unsigned int reserved7; /* reserved for further use ,... */
	58	} dasd_information2_t;
	59
	60	/*
	61	* values to be used for dasd_information_t.format
	62	* 0x00: NOT formatted
	63	* 0x01: Linux disc layout
	64	* 0x02: Common disc layout
	65	*/
	66	#define DASD_FORMAT_NONE 0
	67	#define DASD_FORMAT_LDL 1
	68	#define DASD_FORMAT_CDL 2
	69	/*
	70	* values to be used for dasd_information_t.features
	71	* 0x00: default features
	72	* 0x01: readonly (ro)
	73	* 0x02: use diag discipline (diag)
40545573	74	* 0x04: set the device initially online (internal use only)
9575bf26	75	* 0x08: enable ERP related logging
1da177e4	76	*/
40545573 HH	77	#define DASD_FEATURE_DEFAULT 0x00
	78	#define DASD_FEATURE_READONLY 0x01
	79	#define DASD_FEATURE_USEDIAG 0x02
	80	#define DASD_FEATURE_INITIAL_ONLINE 0x04
9575bf26	81	#define DASD_FEATURE_ERPLOG 0x08
13de227b	82	#define DASD_FEATURE_FAILFAST 0x10
1da177e4 LT	83
	84	#define DASD_PARTN_BITS 2
	85
	86	/*
	87	* struct dasd_information_t
	88	* represents any data about the data, which is visible to userspace
	89	*/
	90	typedef struct dasd_information_t {
	91	unsigned int devno; /* S/390 devno */
	92	unsigned int real_devno; /* for aliases */
	93	unsigned int schid; /* S/390 subchannel identifier */
	94	unsigned int cu_type : 16; /* from SenseID */
	95	unsigned int cu_model : 8; /* from SenseID */
	96	unsigned int dev_type : 16; /* from SenseID */
	97	unsigned int dev_model : 8; /* from SenseID */
	98	unsigned int open_count;
	99	unsigned int req_queue_len;
	100	unsigned int chanq_len; /* length of chanq */
	101	char type[4]; /* from discipline.name, 'none' for unknown */
	102	unsigned int status; /* current device level */
	103	unsigned int label_block; /* where to find the VOLSER */
	104	unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
	105	unsigned int characteristics_size;
	106	unsigned int confdata_size;
	107	char characteristics[64]; /* from read_device_characteristics */
	108	char configuration_data[256]; /* from read_configuration_data */
	109	} dasd_information_t;
	110
	111	/*
5800266a	112	* Read Subsystem Data - Performance Statistics
1da177e4 LT	113	*/
	114	typedef struct dasd_rssd_perf_stats_t {
	115	unsigned char invalid:1;
	116	unsigned char format:3;
	117	unsigned char data_format:4;
	118	unsigned char unit_address;
	119	unsigned short device_status;
	120	unsigned int nr_read_normal;
	121	unsigned int nr_read_normal_hits;
	122	unsigned int nr_write_normal;
	123	unsigned int nr_write_fast_normal_hits;
	124	unsigned int nr_read_seq;
	125	unsigned int nr_read_seq_hits;
	126	unsigned int nr_write_seq;
	127	unsigned int nr_write_fast_seq_hits;
	128	unsigned int nr_read_cache;
	129	unsigned int nr_read_cache_hits;
	130	unsigned int nr_write_cache;
	131	unsigned int nr_write_fast_cache_hits;
	132	unsigned int nr_inhibit_cache;
	133	unsigned int nr_bybass_cache;
	134	unsigned int nr_seq_dasd_to_cache;
	135	unsigned int nr_dasd_to_cache;
	136	unsigned int nr_cache_to_dasd;
	137	unsigned int nr_delayed_fast_write;
	138	unsigned int nr_normal_fast_write;
	139	unsigned int nr_seq_fast_write;
	140	unsigned int nr_cache_miss;
	141	unsigned char status2;
	142	unsigned int nr_quick_write_promotes;
	143	unsigned char reserved;
	144	unsigned short ssid;
	145	unsigned char reseved2[96];
	146	} __attribute__((packed)) dasd_rssd_perf_stats_t;
	147
	148	/*
	149	* struct profile_info_t
	150	* holds the profinling information
	151	*/
	152	typedef struct dasd_profile_info_t {
	153	unsigned int dasd_io_reqs; /* number of requests processed at all */
	154	unsigned int dasd_io_sects; /* number of sectors processed at all */
	155	unsigned int dasd_io_secs[32]; /* histogram of request's sizes */
	156	unsigned int dasd_io_times[32]; /* histogram of requests's times */
	157	unsigned int dasd_io_timps[32]; /* histogram of requests's times per sector */
	158	unsigned int dasd_io_time1[32]; /* histogram of time from build to start */
	159	unsigned int dasd_io_time2[32]; /* histogram of time from start to irq */
	160	unsigned int dasd_io_time2ps[32]; /* histogram of time from start to irq */
	161	unsigned int dasd_io_time3[32]; /* histogram of time from irq to end */
	162	unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */
	163	} dasd_profile_info_t;
	164
b44b0ab3	165	/*
1da177e4 LT	166	* struct format_data_t
	167	* represents all data necessary to format a dasd
	168	*/
	169	typedef struct format_data_t {
b44b0ab3 SW	170	unsigned int start_unit; /* from track */
	171	unsigned int stop_unit; /* to track */
	172	unsigned int blksize; /* sectorsize */
	173	unsigned int intensity;
1da177e4 LT	174	} format_data_t;
	175
	176	/*
	177	* values to be used for format_data_t.intensity
	178	* 0/8: normal format
	179	* 1/9: also write record zero
	180	* 3/11: also write home address
	181	* 4/12: invalidate track
	182	*/
	183	#define DASD_FMT_INT_FMT_R0 1 /* write record zero */
	184	#define DASD_FMT_INT_FMT_HA 2 /* write home address, also set FMT_R0 ! */
	185	#define DASD_FMT_INT_INVAL 4 /* invalidate tracks */
	186	#define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */
	187
	188
	189	/*
	190	* struct attrib_data_t
	191	* represents the operation (cache) bits for the device.
	192	* Used in DE to influence caching of the DASD.
	193	*/
	194	typedef struct attrib_data_t {
	195	unsigned char operation:3; /* cache operation mode */
	196	unsigned char reserved:5; /* cache operation mode */
	197	__u16 nr_cyl; /* no of cyliners for read ahaed */
	198	__u8 reserved2[29]; /* for future use */
	199	} __attribute__ ((packed)) attrib_data_t;
	200
	201	/* definition of operation (cache) bits within attributes of DE */
	202	#define DASD_NORMAL_CACHE 0x0
	203	#define DASD_BYPASS_CACHE 0x1
	204	#define DASD_INHIBIT_LOAD 0x2
	205	#define DASD_SEQ_ACCESS 0x3
	206	#define DASD_SEQ_PRESTAGE 0x4
	207	#define DASD_REC_ACCESS 0x5
	208
ab1d848f NH	209	/*
	210	* Perform EMC Symmetrix I/O
	211	*/
	212	typedef struct dasd_symmio_parms {
	213	unsigned char reserved[8]; /* compat with older releases */
	214	unsigned long long psf_data; /* char * cast to u64 */
	215	unsigned long long rssd_result; /* char * cast to u64 */
	216	int psf_data_len;
	217	int rssd_result_len;
	218	} __attribute__ ((packed)) dasd_symmio_parms_t;
1da177e4	219
196339f1 SW	220	/*
	221	* Data returned by Sense Path Group ID (SNID)
	222	*/
	223	struct dasd_snid_data {
	224	struct {
	225	__u8 group:2;
	226	__u8 reserve:2;
	227	__u8 mode:1;
	228	__u8 res:3;
	229	} __attribute__ ((packed)) path_state;
	230	__u8 pgid[11];
	231	} __attribute__ ((packed));
	232
	233	struct dasd_snid_ioctl_data {
	234	struct dasd_snid_data data;
	235	__u8 path_mask;
	236	} __attribute__ ((packed));
	237
	238
1da177e4 LT	239	/********************************************************************************
	240	* SECTION: Definition of IOCTLs
	241	*
	242	* Here ist how the ioctl-nr should be used:
	243	* 0 - 31 DASD driver itself
49d9c81a	244	* 32 - 239 still open
1da177e4 LT	245	* 240 - 255 reserved for EMC
	246	*******************************************************************************/
	247
	248	/* Disable the volume (for Linux) */
	249	#define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0)
	250	/* Enable the volume (for Linux) */
	251	#define BIODASDENABLE _IO(DASD_IOCTL_LETTER,1)
	252	/* Issue a reserve/release command, rsp. */
	253	#define BIODASDRSRV _IO(DASD_IOCTL_LETTER,2) /* reserve */
	254	#define BIODASDRLSE _IO(DASD_IOCTL_LETTER,3) /* release */
	255	#define BIODASDSLCK _IO(DASD_IOCTL_LETTER,4) /* steal lock */
	256	/* reset profiling information of a device */
	257	#define BIODASDPRRST _IO(DASD_IOCTL_LETTER,5)
	258	/* Quiesce IO on device */
	259	#define BIODASDQUIESCE _IO(DASD_IOCTL_LETTER,6)
	260	/* Resume IO on device */
	261	#define BIODASDRESUME _IO(DASD_IOCTL_LETTER,7)
	262
	263
	264	/* retrieve API version number */
	265	#define DASDAPIVER _IOR(DASD_IOCTL_LETTER,0,int)
	266	/* Get information on a dasd device */
	267	#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
	268	/* retrieve profiling information of a device */
	269	#define BIODASDPRRD _IOR(DASD_IOCTL_LETTER,2,dasd_profile_info_t)
	270	/* Get information on a dasd device (enhanced) */
	271	#define BIODASDINFO2 _IOR(DASD_IOCTL_LETTER,3,dasd_information2_t)
	272	/* Performance Statistics Read */
	273	#define BIODASDPSRD _IOR(DASD_IOCTL_LETTER,4,dasd_rssd_perf_stats_t)
	274	/* Get Attributes (cache operations) */
	275	#define BIODASDGATTR _IOR(DASD_IOCTL_LETTER,5,attrib_data_t)
	276
	277
	278	/* #define BIODASDFORMAT _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */
	279	#define BIODASDFMT _IOW(DASD_IOCTL_LETTER,1,format_data_t)
	280	/* Set Attributes (cache operations) */
	281	#define BIODASDSATTR _IOW(DASD_IOCTL_LETTER,2,attrib_data_t)
	282
196339f1 SW	283	/* Get Sense Path Group ID (SNID) data */
	284	#define BIODASDSNID _IOWR(DASD_IOCTL_LETTER, 1, struct dasd_snid_ioctl_data)
	285
ab1d848f	286	#define BIODASDSYMMIO _IOWR(DASD_IOCTL_LETTER, 240, dasd_symmio_parms_t)
1da177e4 LT	287
	288	#endif /* DASD_H */
	289