138 lines
3.7 KiB
C
138 lines
3.7 KiB
C
/* $NetBSD: aic77xx.c,v 1.4 2003/10/18 07:44:51 tsutsui Exp $ */
|
|
|
|
/*
|
|
* Common routines for AHA-27/284X and aic7770 motherboard SCSI controllers.
|
|
*
|
|
* Copyright (c) 1994, 1995, 1996, 1997, 1998 Justin T. Gibbs.
|
|
* 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 immediately at the beginning of the file, without modification,
|
|
* this list of conditions, and the following disclaimer.
|
|
* 2. 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
|
*
|
|
* $FreeBSD: src/sys/dev/aic7xxx/ahc_eisa.c,v 1.15 2000/01/29 14:22:19 peter Exp $
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: aic77xx.c,v 1.4 2003/10/18 07:44:51 tsutsui Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
|
|
#include <dev/scsipi/scsi_all.h>
|
|
#include <dev/scsipi/scsipi_all.h>
|
|
#include <dev/scsipi/scsiconf.h>
|
|
|
|
#include <dev/ic/aic7xxx_osm.h>
|
|
#include <dev/ic/aic7xxx_inline.h>
|
|
#include <dev/ic/aic77xxreg.h>
|
|
#include <dev/ic/aic77xxvar.h>
|
|
|
|
/*
|
|
* Return irq setting of the board, otherwise -1.
|
|
*/
|
|
int
|
|
ahc_aic77xx_irq(iot, ioh)
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
{
|
|
int irq;
|
|
u_int8_t intdef;
|
|
u_int8_t hcntrl;
|
|
|
|
/* Pause the card preseving the IRQ type */
|
|
hcntrl = bus_space_read_1(iot, ioh, HCNTRL) & IRQMS;
|
|
bus_space_write_1(iot, ioh, HCNTRL, hcntrl | PAUSE);
|
|
|
|
intdef = bus_space_read_1(iot, ioh, INTDEF);
|
|
irq = (intdef & INTDEF_IRQ_MASK);
|
|
switch (irq) {
|
|
case 9:
|
|
case 10:
|
|
case 11:
|
|
case 12:
|
|
case 14:
|
|
case 15:
|
|
break;
|
|
default:
|
|
printf("ahc_aic77xx_irq: illegal irq setting %d\n", intdef);
|
|
return (-1);
|
|
}
|
|
|
|
return (irq);
|
|
}
|
|
|
|
int
|
|
ahc_aic77xx_attach(ahc)
|
|
struct ahc_softc *ahc;
|
|
{
|
|
u_int8_t sblkctl;
|
|
u_int8_t sblkctl_orig;
|
|
u_int8_t hostconf;
|
|
|
|
/*
|
|
* See if we have a Rev E or higher aic7770. Anything below a
|
|
* Rev E will have a R/O autoflush disable configuration bit.
|
|
*/
|
|
sblkctl_orig = ahc_inb(ahc, SBLKCTL);
|
|
sblkctl = sblkctl_orig ^ AUTOFLUSHDIS;
|
|
ahc_outb(ahc, SBLKCTL, sblkctl);
|
|
sblkctl = ahc_inb(ahc, SBLKCTL);
|
|
if (sblkctl != sblkctl_orig) {
|
|
printf("%s: aic7770 >= Rev E: R/O autoflush enabled\n",
|
|
ahc_name(ahc));
|
|
/*
|
|
* Ensure autoflush is enabled
|
|
*/
|
|
sblkctl &= ~AUTOFLUSHDIS;
|
|
ahc_outb(ahc, SBLKCTL, sblkctl);
|
|
}
|
|
|
|
/* Setup the FIFO threshold and the bus off time */
|
|
hostconf = ahc_inb(ahc, HOSTCONF);
|
|
ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
|
|
ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
|
|
|
|
/*
|
|
* Generic aic7xxx initialization.
|
|
*/
|
|
if (ahc_init(ahc)) {
|
|
/*
|
|
* The board's IRQ line is not yet enabled so it's safe
|
|
* to release the irq.
|
|
*/
|
|
return (ENXIO);
|
|
}
|
|
|
|
/*
|
|
* Enable the board's BUS drivers
|
|
*/
|
|
ahc_outb(ahc, BCTL, ENABLE);
|
|
|
|
/* Attach sub-devices - always succeeds */
|
|
ahc_attach(ahc);
|
|
|
|
return 0;
|
|
}
|