937a7a3ed9
This is a completely rewritten scsipi_xfer execution engine, and the associated changes to HBA drivers. Overview of changes & features: - All xfers are queued in the mid-layer, rather than doing so in an ad-hoc fashion in individual adapter drivers. - Adapter/channel resource management in the mid-layer, avoids even trying to start running an xfer if the adapter/channel doesn't have the resources. - Better communication between the mid-layer and the adapters. - Asynchronous event notification mechanism from adapter to mid-layer and peripherals. - Better peripheral queue management: freeze/thaw, sorted requeueing during recovery, etc. - Clean separation of peripherals, adapters, and adapter channels (no more scsipi_link). - Kernel thread for each scsipi_channel makes error recovery much easier (no more dealing with interrupt context when recovering from an error). - Mid-layer support for tagged queueing: commands can have the tag type set explicitly, tag IDs are allocated in the mid-layer (thus eliminating the need to use buggy tag ID allocation schemes in many adapter drivers). - support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command will be requeued, or a REQUEST SENSE will be sent as appropriate. Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge
77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/* $NetBSD: cdvar.h,v 1.13 2001/04/25 17:53:39 bouyer Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997 Manuel Bouyer. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Charles M. Hannum.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#define CDRETRIES 4
|
|
|
|
struct cd_ops;
|
|
|
|
struct cd_softc {
|
|
struct device sc_dev;
|
|
struct disk sc_dk;
|
|
|
|
int flags;
|
|
#define CDF_LOCKED 0x01
|
|
#define CDF_WANTED 0x02
|
|
#define CDF_WLABEL 0x04 /* label is writable */
|
|
#define CDF_LABELLING 0x08 /* writing label */
|
|
#define CDF_ANCIENT 0x10 /* disk is ancient; for minphys */
|
|
|
|
struct scsipi_periph *sc_periph;
|
|
|
|
struct cd_parms {
|
|
int blksize;
|
|
u_long disksize; /* total number sectors */
|
|
} params;
|
|
|
|
struct buf_queue buf_queue;
|
|
char name[16]; /* product name, for default disklabel */
|
|
const struct cd_ops *sc_ops; /* our bus-dependent ops vector */
|
|
|
|
#if NRND > 0
|
|
rndsource_element_t rnd_source;
|
|
#endif
|
|
};
|
|
|
|
struct cd_ops {
|
|
int (*cdo_setchan) __P((struct cd_softc *, int, int, int, int,
|
|
int));
|
|
int (*cdo_getvol) __P((struct cd_softc *, struct ioc_vol *, int));
|
|
int (*cdo_setvol) __P((struct cd_softc *, const struct ioc_vol *,
|
|
int));
|
|
int (*cdo_set_pa_immed) __P((struct cd_softc *, int));
|
|
int (*cdo_load_unload) __P((struct cd_softc *, int, int));
|
|
};
|
|
|
|
void cdattach __P((struct device *, struct cd_softc *, struct scsipi_periph *,
|
|
const struct cd_ops *));
|
|
int cdactivate __P((struct device *, enum devact));
|
|
int cddetach __P((struct device *, int));
|