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NetBSD/sys/dev/raidframe/rf_raidframe.h

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/* $NetBSD: rf_raidframe.h,v 1.1 1998/11/13 04:20:33 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*****************************************************
*
* rf_raidframe.h
*
* main header file for using raidframe in the kernel.
*
*****************************************************/
/*
* :
*
* Log: rf_raidframe.h,v
* Revision 1.21 1996/06/17 03:00:15 jimz
* Change RAIDFRAME_GET_INFO interface to work around ioctl
* size limitation problem. This operation now takes a pointer
* to a pointer, and does its own copyout() (so it can transfer
* more than 8k at a time).
*
* Revision 1.20 1996/06/07 21:33:04 jimz
* begin using consistent types for sector numbers,
* stripe numbers, row+col numbers, recon unit numbers
*
* Revision 1.19 1996/06/03 23:28:26 jimz
* more bugfixes
* check in tree to sync for IPDS runs with current bugfixes
* there still may be a problem with threads in the script test
* getting I/Os stuck- not trivially reproducible (runs ~50 times
* in a row without getting stuck)
*
* Revision 1.18 1996/05/24 22:17:04 jimz
* continue code + namespace cleanup
* typed a bunch of flags
*
* Revision 1.17 1996/05/23 21:46:35 jimz
* checkpoint in code cleanup (release prep)
* lots of types, function names have been fixed
*
* Revision 1.16 1996/05/23 00:33:23 jimz
* code cleanup: move all debug decls to rf_options.c, all extern
* debug decls to rf_options.h, all debug vars preceded by rf_
*
* Revision 1.15 1996/05/02 22:09:48 jimz
* change devs and spares in device_config to RF_RaidDisk_t
*
* Revision 1.14 1995/12/06 15:03:33 root
* added copyright info
*
* Revision 1.13 1995/09/30 20:39:54 jimz
* added new ioctls:
* RAIDFRAME_RESET_ACCTOTALS
* RAIDFRAME_GET_ACCTOTALS
* RAIDFRAME_KEEP_ACCTOTALS
*
* Revision 1.12 1995/09/25 20:11:51 wvcii
* Added #include "rf_raid.h"
*
*
*/
#ifndef _RF__RF_RAIDFRAME_H_
#define _RF__RF_RAIDFRAME_H_
#include "rf_types.h"
#include "rf_configure.h"
#include "rf_disks.h"
#include "rf_raid.h"
struct rf_test_acc { /* used by RAIDFRAME_TEST_ACC ioctl */
RF_SectorNum_t startSector; /* raidAddress */
RF_SectorCount_t numSector; /* number of sectors to xfer */
char *buf; /* data buffer */
void *returnBufs[10]; /* for async accs only, completed I/Os returned */
struct rf_test_acc *next; /* for making lists */
RF_IoType_t type; /* (see rf_types.h for RF_IO_TYPE_*) */
struct rf_test_acc *myaddr; /* user-address of this struct */
void *bp; /* used in-kernel: need not be set by user */
};
typedef RF_uint32 RF_ReconReqFlags_t;
struct rf_recon_req { /* used to tell the kernel to fail a disk */
RF_RowCol_t row, col;
RF_ReconReqFlags_t flags;
void *raidPtr; /* used internally; need not be set at ioctl time */
struct rf_recon_req *next; /* used internally; need not be set at ioctl time */
};
struct RF_SparetWait_s {
int C, G, fcol; /* C = # disks in row, G = # units in stripe, fcol = which disk has failed */
RF_StripeCount_t SUsPerPU; /* this stuff is the info required to create a spare table */
int TablesPerSpareRegion;
int BlocksPerTable;
RF_StripeCount_t TableDepthInPUs;
RF_StripeCount_t SpareSpaceDepthPerRegionInSUs;
RF_SparetWait_t *next; /* used internally; need not be set at ioctl time */
};
typedef struct RF_DeviceConfig_s {
u_int rows;
u_int cols;
u_int maxqdepth;
int ndevs;
RF_RaidDisk_t devs[RF_MAX_DISKS];
int nspares;
RF_RaidDisk_t spares[RF_MAX_DISKS];
} RF_DeviceConfig_t;
/* flags that can be put in the rf_recon_req structure */
#define RF_FDFLAGS_NONE 0x0 /* just fail the disk */
#define RF_FDFLAGS_RECON 0x1 /* fail and initiate recon */
#define RF_SCSI_DISK_MAJOR 8 /* the device major number for disks in the system */
#define RAIDFRAME_CONFIGURE _IOW ('r', 1, void *) /* configure the driver */
#define RAIDFRAME_SHUTDOWN _IO ('r', 2) /* shutdown the driver */
#define RAIDFRAME_TUR _IOW ('r', 3, dev_t) /* debug only: test unit ready */
#define RAIDFRAME_TEST_ACC _IOWR('r', 4, struct rf_test_acc) /* run a test access */
#define RAIDFRAME_FAIL_DISK _IOW ('r', 5, struct rf_recon_req) /* fail a disk & optionally start recon */
#define RAIDFRAME_CHECKRECON _IOWR('r', 6, int) /* get reconstruction % complete on indicated row */
#define RAIDFRAME_REWRITEPARITY _IO ('r', 7) /* rewrite (initialize) all parity */
#define RAIDFRAME_COPYBACK _IO ('r', 8) /* copy reconstructed data back to replaced disk */
#define RAIDFRAME_SPARET_WAIT _IOR ('r', 9, RF_SparetWait_t) /* does not return until kernel needs a spare table */
#define RAIDFRAME_SEND_SPARET _IOW ('r', 10, void *) /* used to send a spare table down into the kernel */
#define RAIDFRAME_ABORT_SPARET_WAIT _IO ('r', 11) /* used to wake up the sparemap daemon & tell it to exit */
#define RAIDFRAME_START_ATRACE _IO ('r', 12) /* start tracing accesses */
#define RAIDFRAME_STOP_ATRACE _IO ('r', 13) /* stop tracing accesses */
#define RAIDFRAME_GET_SIZE _IOR ('r', 14, int) /* get size (# sectors) in raid device */
#define RAIDFRAME_GET_INFO _IOWR('r', 15, RF_DeviceConfig_t *) /* get configuration */
#define RAIDFRAME_RESET_ACCTOTALS _IO ('r', 16) /* reset AccTotals for device */
#define RAIDFRAME_GET_ACCTOTALS _IOR ('r', 17, RF_AccTotals_t) /* retrieve AccTotals for device */
#define RAIDFRAME_KEEP_ACCTOTALS _IOW ('r', 18, int) /* turn AccTotals on or off for device */
#endif /* !_RF__RF_RAIDFRAME_H_ */
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