/* $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_ */