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NetBSD/sys/dev/mca/edvar.h

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The header part of driver overhault: * simplify and clean the attach code a lot, and support the 'drive' locator * pass proper dev_t to readdisklabel() - formerly, the passed value was completely broken (used incorrect major and wrong minor), but worked by accident * worker thread is now spawned per controller, rather than per-drive; i/o cannot be done concurrently by different drivers, only one i/o can be pending at any time * simplify the command queue code, just sleep appropriately when !poll case, g/c 'async' code formerly needed, move the bio code from ed_mca.c to edc_mca.c:edc_bio() * other misc cleanups
2001-11-24 15:46:15 +03:00
/* $NetBSD: edvar.h,v 1.6 2001/11/24 12:46:15 jdolecek Exp $ */
Add a driver for IBM ESDI disk controllers. Tested with IBM Integ. ESDI Fixed Disk & Controller only at the moment. This driver still needs some touchup (error recovery is not quite good, MCA DMA controller goo should be moved to driver independant location), but is working enough to be usable for others. And I want this under CVS control :) Thanks to Scott Telford <st@epcc.ed.ac.uk> for providing me docs for these devices (IBM DASD Storage Interface Specification for MCA rev. 2.2).
2001-04-19 11:30:24 +04:00
/*
* Copyright (c) 2001 The NetBSD Foundation, Inc.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jaromir Dolecek.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 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.
*/
Use "edc" instead of "dasd". As pointed out by Soren, dasd doesn't mean anything special in IBM-talk. And edc better matches prior art, too.
2001-04-19 21:17:28 +04:00
struct edc_mca_softc;
Add a driver for IBM ESDI disk controllers. Tested with IBM Integ. ESDI Fixed Disk & Controller only at the moment. This driver still needs some touchup (error recovery is not quite good, MCA DMA controller goo should be moved to driver independant location), but is working enough to be usable for others. And I want this under CVS control :) Thanks to Scott Telford <st@epcc.ed.ac.uk> for providing me docs for these devices (IBM DASD Storage Interface Specification for MCA rev. 2.2).
2001-04-19 11:30:24 +04:00
struct ed_softc {
struct device sc_dev;
/* General disk infos */
struct disk sc_dk;
struct buf_queue sc_q;
struct simplelock sc_q_lock;
The header part of driver overhault: * simplify and clean the attach code a lot, and support the 'drive' locator * pass proper dev_t to readdisklabel() - formerly, the passed value was completely broken (used incorrect major and wrong minor), but worked by accident * worker thread is now spawned per controller, rather than per-drive; i/o cannot be done concurrently by different drivers, only one i/o can be pending at any time * simplify the command queue code, just sleep appropriately when !poll case, g/c 'async' code formerly needed, move the bio code from ed_mca.c to edc_mca.c:edc_bio() * other misc cleanups
2001-11-24 15:46:15 +03:00
struct edc_mca_softc *edc_softc; /* pointer to our controller */
Add a driver for IBM ESDI disk controllers. Tested with IBM Integ. ESDI Fixed Disk & Controller only at the moment. This driver still needs some touchup (error recovery is not quite good, MCA DMA controller goo should be moved to driver independant location), but is working enough to be usable for others. And I want this under CVS control :) Thanks to Scott Telford <st@epcc.ed.ac.uk> for providing me docs for these devices (IBM DASD Storage Interface Specification for MCA rev. 2.2).
2001-04-19 11:30:24 +04:00
Implement polled command mode, and use it for writing system dump and for initial autoconf probes; the latter eliminates need for deferred configuration (and makes dmesg a bit nicer). g/c EDF_IODONE flag - protect against interrupt by calling tsleep() at splbio in worker thread g/c unneeded stuff, improve some autoconf messages
2001-05-04 16:58:34 +04:00
int sc_flags;
Fix serious bug in bounce buf handling - the EDF_BOUNCEBUF flag needs to be cleared always in edmcadone(), otherwise if there is a write via bounce buffer followed by read directly to buf, the read operation would return trashed data (the buf data would get overwritten by contents of bounce buffer in edmcadone()). Reset b_resid as necessary when the i/o is done, too. g/c some unneeded stuff, use lockmgr()-style locking in ed_[un]lock(), better avoid some deadlocks These changes make the driver quite a bit more stable. It's actually reliable enough to be possible to newfs the drive and use it for read/write filesystem now.
2001-04-22 15:32:49 +04:00
#define WDF_WLABEL 0x001 /* label is writable */
#define WDF_LABELLING 0x002 /* writing label */
#define WDF_LOADED 0x004 /* parameters loaded */
#define WDF_KLABEL 0x008 /* retain label after 'full' close */
The header part of driver overhault: * simplify and clean the attach code a lot, and support the 'drive' locator * pass proper dev_t to readdisklabel() - formerly, the passed value was completely broken (used incorrect major and wrong minor), but worked by accident * worker thread is now spawned per controller, rather than per-drive; i/o cannot be done concurrently by different drivers, only one i/o can be pending at any time * simplify the command queue code, just sleep appropriately when !poll case, g/c 'async' code formerly needed, move the bio code from ed_mca.c to edc_mca.c:edc_bio() * other misc cleanups
2001-11-24 15:46:15 +03:00
#define EDF_INIT 0x100 /* disk initialized */
Fix serious bug in bounce buf handling - the EDF_BOUNCEBUF flag needs to be cleared always in edmcadone(), otherwise if there is a write via bounce buffer followed by read directly to buf, the read operation would return trashed data (the buf data would get overwritten by contents of bounce buffer in edmcadone()). Reset b_resid as necessary when the i/o is done, too. g/c some unneeded stuff, use lockmgr()-style locking in ed_[un]lock(), better avoid some deadlocks These changes make the driver quite a bit more stable. It's actually reliable enough to be possible to newfs the drive and use it for read/write filesystem now.
2001-04-22 15:32:49 +04:00
struct lock sc_lock; /* drive lock */
Add a driver for IBM ESDI disk controllers. Tested with IBM Integ. ESDI Fixed Disk & Controller only at the moment. This driver still needs some touchup (error recovery is not quite good, MCA DMA controller goo should be moved to driver independant location), but is working enough to be usable for others. And I want this under CVS control :) Thanks to Scott Telford <st@epcc.ed.ac.uk> for providing me docs for these devices (IBM DASD Storage Interface Specification for MCA rev. 2.2).
2001-04-19 11:30:24 +04:00
/* actual drive parameters */
The header part of driver overhault: * simplify and clean the attach code a lot, and support the 'drive' locator * pass proper dev_t to readdisklabel() - formerly, the passed value was completely broken (used incorrect major and wrong minor), but worked by accident * worker thread is now spawned per controller, rather than per-drive; i/o cannot be done concurrently by different drivers, only one i/o can be pending at any time * simplify the command queue code, just sleep appropriately when !poll case, g/c 'async' code formerly needed, move the bio code from ed_mca.c to edc_mca.c:edc_bio() * other misc cleanups
2001-11-24 15:46:15 +03:00
int sc_capacity;
int sc_devno;
u_int16_t sense_data[4]; /* sensed drive parameters */
Add a driver for IBM ESDI disk controllers. Tested with IBM Integ. ESDI Fixed Disk & Controller only at the moment. This driver still needs some touchup (error recovery is not quite good, MCA DMA controller goo should be moved to driver independant location), but is working enough to be usable for others. And I want this under CVS control :) Thanks to Scott Telford <st@epcc.ed.ac.uk> for providing me docs for these devices (IBM DASD Storage Interface Specification for MCA rev. 2.2).
2001-04-19 11:30:24 +04:00
u_int16_t cyl;
u_int8_t heads;
u_int8_t sectors;
u_int8_t spares; /* spares per cylinder */
The header part of driver overhault: * simplify and clean the attach code a lot, and support the 'drive' locator * pass proper dev_t to readdisklabel() - formerly, the passed value was completely broken (used incorrect major and wrong minor), but worked by accident * worker thread is now spawned per controller, rather than per-drive; i/o cannot be done concurrently by different drivers, only one i/o can be pending at any time * simplify the command queue code, just sleep appropriately when !poll case, g/c 'async' code formerly needed, move the bio code from ed_mca.c to edc_mca.c:edc_bio() * other misc cleanups
2001-11-24 15:46:15 +03:00
u_int32_t rba; /* # of RBAs */
Add a driver for IBM ESDI disk controllers. Tested with IBM Integ. ESDI Fixed Disk & Controller only at the moment. This driver still needs some touchup (error recovery is not quite good, MCA DMA controller goo should be moved to driver independant location), but is working enough to be usable for others. And I want this under CVS control :) Thanks to Scott Telford <st@epcc.ed.ac.uk> for providing me docs for these devices (IBM DASD Storage Interface Specification for MCA rev. 2.2).
2001-04-19 11:30:24 +04:00
#if NRND > 0
rndsource_element_t rnd_source;
#endif
};