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