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wdvar.h revision 1.46.6.1 
      1 /*	$NetBSD: wdvar.h,v 1.46.6.1 2018/08/31 19:08:03 jdolecek Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998, 2001 Manuel Bouyer.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef _DEV_ATA_WDVAR_H_
     28 #define	_DEV_ATA_WDVAR_H_
     29 
     30 #ifdef _KERNEL_OPT
     31 #include "opt_wd.h"
     32 #endif
     33 
     34 #include <dev/dkvar.h>
     35 #include <sys/sysctl.h>
     36 
     37 struct wd_softc {
     38 	/* General disk infos */
     39 	struct dk_softc sc_dksc;
     40 	kmutex_t sc_lock;
     41 	int sc_quirks;			/* any quirks drive might have */
     42 
     43 	/* IDE disk soft states */
     44 	struct ata_drive_datas *drvp; /* Our controller's infos */
     45 	const struct ata_bustype *atabus;
     46 	struct ataparams sc_params;/* drive characteristics found */
     47 	int sc_flags;
     48 /*
     49  * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is
     50  * more fully implemented.
     51  */
     52 #define WDF_LOADED	0x010 /* parameters loaded */
     53 #define WDF_WAIT	0x020 /* waiting for resources */
     54 #define WDF_LBA		0x040 /* using LBA mode */
     55 #define WDF_LBA48	0x100 /* using 48-bit LBA mode */
     56 #define WDF_FLUSH_PEND	0x200 /* cache flush waits for free xfer */
     57 #define WDF_OPEN	0x400 /* device is open */
     58 	uint64_t sc_capacity; /* full capacity of the device */
     59 	uint64_t sc_capacity512; /* ... in DEV_BSIZE blocks */
     60 	uint32_t sc_capacity28; /* capacity accessible with LBA28 commands */
     61 	uint32_t sc_blksize; /* logical block size, in bytes */
     62 
     63 #ifdef WD_SOFTBADSECT
     64 	SLIST_HEAD(, disk_badsectors)	sc_bslist;
     65 	u_int sc_bscount;
     66 #endif
     67 
     68 	/* Retry/requeue failed transfers */
     69 	SLIST_HEAD(, ata_xfer) sc_retry_list;
     70 	struct callout sc_retry_callout;	/* retry callout handle */
     71 
     72 	SLIST_HEAD(, ata_xfer) sc_requeue_list;
     73 	struct callout sc_requeue_callout;	/* requeue callout handle */
     74 
     75 	/* Sysctl nodes specific for the disk */
     76 	struct sysctllog *nodelog;
     77 	int drv_max_tags;
     78 #define WD_MAX_OPENINGS(wd)	\
     79 	(MAX(1, MIN((wd)->drvp->drv_openings, (wd)->drv_max_tags)))
     80 	bool drv_ncq;
     81 #define WD_USE_NCQ(wd)	\
     82 	((wd)->drv_ncq && ((wd)->drvp->drive_flags & ATA_DRIVE_NCQ))
     83 	bool drv_ncq_prio;
     84 #define WD_USE_NCQ_PRIO(wd) \
     85 	((wd)->drv_ncq_prio && ((wd)->drvp->drive_flags & ATA_DRIVE_NCQ_PRIO))
     86 #ifdef WD_CHAOS_MONKEY
     87 	int drv_chaos_freq;		/* frequency of simulated bio errors */
     88 	int drv_chaos_cnt;		/* count of processed bio read xfers */
     89 #endif
     90 };
     91 
     92 #endif /* _DEV_ATA_WDVAR_H_ */
     93