Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 338 insertions, 0 deletions

diff --git a/arch/s390/include/uapi/asm/dasd.h b/arch/s390/include/uapi/asm/dasd.h
new file mode 100644
index 000000000..9ec86fae9
--- /dev/null
+++ b/arch/s390/include/uapi/asm/dasd.h
@@ -0,0 +1,338 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
+ * Bugreports.to..: <Linux390@de.ibm.com>
+ * Copyright IBM Corp. 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
+ * 0x100: default features
+ * 0x001: readonly (ro)
+ * 0x002: use diag discipline (diag)
+ * 0x004: set the device initially online (internal use only)
+ * 0x008: enable ERP related logging
+ * 0x010: allow I/O to fail on lost paths
+ * 0x020: allow I/O to fail when a lock was stolen
+ * 0x040: give access to raw eckd data
+ * 0x080: enable discard support
+ * 0x100: enable autodisable for IFCC errors (default)
+ */
+#define DASD_FEATURE_READONLY	      0x001
+#define DASD_FEATURE_USEDIAG	      0x002
+#define DASD_FEATURE_INITIAL_ONLINE   0x004
+#define DASD_FEATURE_ERPLOG	      0x008
+#define DASD_FEATURE_FAILFAST	      0x010
+#define DASD_FEATURE_FAILONSLCK       0x020
+#define DASD_FEATURE_USERAW	      0x040
+#define DASD_FEATURE_DISCARD	      0x080
+#define DASD_FEATURE_PATH_AUTODISABLE 0x100
+#define DASD_FEATURE_DEFAULT	      DASD_FEATURE_PATH_AUTODISABLE
+
+#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 */
+#define DASD_FMT_INT_FMT_NOR0	16	/* remove permission to write record zero */
+#define DASD_FMT_INT_ESE_FULL	32	/* release space for entire volume */
+
+/*
+ * struct format_check_t
+ * represents all data necessary to evaluate the format of
+ * different tracks of a dasd
+ */
+typedef struct format_check_t {
+	/* Input */
+	struct format_data_t expect;
+
+	/* Output */
+	unsigned int result;		/* Error indication (DASD_FMT_ERR_*) */
+	unsigned int unit;		/* Track that is in error */
+	unsigned int rec;		/* Record that is in error */
+	unsigned int num_records;	/* Records in the track in error */
+	unsigned int blksize;		/* Blocksize of first record in error */
+	unsigned int key_length;	/* Key length of first record in error */
+} format_check_t;
+
+/* Values returned in format_check_t when a format error is detected: */
+/* Too few records were found on a single track */
+#define DASD_FMT_ERR_TOO_FEW_RECORDS	1
+/* Too many records were found on a single track */
+#define DASD_FMT_ERR_TOO_MANY_RECORDS	2
+/* Blocksize/data-length of a record was wrong */
+#define DASD_FMT_ERR_BLKSIZE		3
+/* A record ID is defined by cylinder, head, and record number (CHR). */
+/* On mismatch, this error is set */
+#define DASD_FMT_ERR_RECORD_ID		4
+/* If key-length was != 0 */
+#define DASD_FMT_ERR_KEY_LENGTH		5
+
+/*
+ * 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)
+/* Abort all I/O on a device */
+#define BIODASDABORTIO _IO(DASD_IOCTL_LETTER, 240)
+/* Allow I/O on a device */
+#define BIODASDALLOWIO _IO(DASD_IOCTL_LETTER, 241)
+
+
+/* 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)
+/* Release Allocated Space */
+#define BIODASDRAS     _IOW(DASD_IOCTL_LETTER, 3, format_data_t)
+
+/* Get Sense Path Group ID (SNID) data */
+#define BIODASDSNID    _IOWR(DASD_IOCTL_LETTER, 1, struct dasd_snid_ioctl_data)
+/* Check device format according to format_check_t */
+#define BIODASDCHECKFMT _IOWR(DASD_IOCTL_LETTER, 2, format_check_t)
+
+#define BIODASDSYMMIO  _IOWR(DASD_IOCTL_LETTER, 240, dasd_symmio_parms_t)
+
+#endif				/* DASD_H */
+