NetBSD/sys/dev/eisa/ahc_eisa.c

318 lines
8.4 KiB
C

/* $NetBSD: ahc_eisa.c,v 1.17 2000/01/26 06:41:11 thorpej Exp $ */
/*
* Product specific probe and attach routines for:
* 27/284X and aic7770 motherboard SCSI controllers
*
* Copyright (c) 1994, 1995, 1996 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. 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. 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.
*
* from Id: aic7770.c,v 1.29 1996/05/30 07:18:52 gibbs Exp
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.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/eisa/eisareg.h>
#include <dev/eisa/eisavar.h>
#include <dev/eisa/eisadevs.h>
#include <dev/ic/aic7xxxreg.h>
#include <dev/ic/aic7xxxvar.h>
#define AHC_EISA_SLOT_OFFSET 0xc00
#define AHC_EISA_IOSIZE 0x100
#define INTDEF 0x5cul /* Interrupt Definition Register */
/*
* Under normal circumstances, these messages are unnecessary
* and not terribly cosmetic.
*/
#ifdef DEBUG
#define bootverbose 1
#else
#define bootverbose 0
#endif
int ahc_eisa_irq __P((bus_space_tag_t, bus_space_handle_t));
int ahc_eisa_match __P((struct device *, struct cfdata *, void *));
void ahc_eisa_attach __P((struct device *, struct device *, void *));
struct cfattach ahc_eisa_ca = {
sizeof(struct ahc_data), ahc_eisa_match, ahc_eisa_attach
};
/*
* Return irq setting of the board, otherwise -1.
*/
int
ahc_eisa_irq(iot, ioh)
bus_space_tag_t iot;
bus_space_handle_t ioh;
{
int irq;
u_char intdef;
ahc_reset("ahc_eisa", iot, ioh);
intdef = bus_space_read_1(iot, ioh, INTDEF);
switch (irq = (intdef & 0xf)) {
case 9:
case 10:
case 11:
case 12:
case 14:
case 15:
break;
default:
printf("ahc_eisa_irq: illegal irq setting %d\n", intdef);
return -1;
}
/* Note that we are going and return (to probe) */
return irq;
}
/*
* Check the slots looking for a board we recognise
* If we find one, note it's address (slot) and call
* the actual probe routine to check it out.
*/
int
ahc_eisa_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct eisa_attach_args *ea = aux;
bus_space_tag_t iot = ea->ea_iot;
bus_space_handle_t ioh;
int irq;
/* must match one of our known ID strings */
if (strcmp(ea->ea_idstring, "ADP7770") &&
strcmp(ea->ea_idstring, "ADP7771")
#if 0
&& strcmp(ea->ea_idstring, "ADP7756") /* not EISA, but VL */
&& strcmp(ea->ea_idstring, "ADP7757") /* not EISA, but VL */
#endif
)
return (0);
if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
AHC_EISA_SLOT_OFFSET, AHC_EISA_IOSIZE, 0, &ioh))
return (0);
irq = ahc_eisa_irq(iot, ioh);
bus_space_unmap(iot, ioh, AHC_EISA_IOSIZE);
return (irq >= 0);
}
void
ahc_eisa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
ahc_type type;
struct ahc_data *ahc = (void *)self;
struct eisa_attach_args *ea = aux;
bus_space_tag_t iot = ea->ea_iot;
bus_space_handle_t ioh;
int irq;
eisa_chipset_tag_t ec = ea->ea_ec;
eisa_intr_handle_t ih;
const char *model, *intrstr;
if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
AHC_EISA_SLOT_OFFSET, AHC_EISA_IOSIZE, 0, &ioh))
panic("ahc_eisa_attach: could not map I/O addresses");
if ((irq = ahc_eisa_irq(iot, ioh)) < 0)
panic("ahc_eisa_attach: ahc_eisa_irq failed!");
if (strcmp(ea->ea_idstring, "ADP7770") == 0) {
model = EISA_PRODUCT_ADP7770;
type = AHC_AIC7770;
} else if (strcmp(ea->ea_idstring, "ADP7771") == 0) {
model = EISA_PRODUCT_ADP7771;
type = AHC_274;
#if 0
} else if (strcmp(ea->ea_idstring, "ADP7756") == 0) {
model = EISA_PRODUCT_ADP7756;
type = AHC_284;
} else if (strcmp(ea->ea_idstring, "ADP7757") == 0) {
model = EISA_PRODUCT_ADP7757;
type = AHC_284;
#endif
} else {
panic("ahc_eisa_attach: Unknown device type %s\n",
ea->ea_idstring);
}
printf(": %s\n", model);
ahc_construct(ahc, iot, ioh, ea->ea_dmat, type, AHC_FNONE);
if (eisa_intr_map(ec, irq, &ih)) {
printf("%s: couldn't map interrupt (%d)\n",
ahc->sc_dev.dv_xname, irq);
return;
}
/*
* Tell the user what type of interrupts we're using.
* usefull for debugging irq problems
*/
if(bootverbose) {
printf("%s: Using %s Interrupts\n",
ahc_name(ahc),
ahc->pause & IRQMS ? "Level Sensitive" : "Edge Triggered");
}
/*
* Now that we know we own the resources we need, do the
* card initialization.
*
* First, the aic7770 card specific setup.
*/
switch( ahc->type ) {
case AHC_AIC7770:
case AHC_274:
{
u_char biosctrl = AHC_INB(ahc, HA_274_BIOSCTRL);
/* Get the primary channel information */
ahc->flags |= (biosctrl & CHANNEL_B_PRIMARY);
if((biosctrl & BIOSMODE) == BIOSDISABLED)
ahc->flags |= AHC_USEDEFAULTS;
break;
}
case AHC_284:
{
/* XXX
* All values are automagically intialized at
* POST for these cards, so we can always rely
* on the Scratch Ram values. However, we should
* read the SEEPROM here (Dan has the code to do
* it) so we can say what kind of translation the
* BIOS is using. Printing out the geometry could
* save a lot of users the grief of failed installs.
*/
break;
}
default:
break;
}
/*
* See if we have a Rev E or higher aic7770. Anything below a
* Rev E will have a R/O autoflush disable configuration bit.
* It's still not clear exactly what is differenent about the Rev E.
* We think it allows 8 bit entries in the QOUTFIFO to support
* "paging" SCBs so you can have more than 4 commands active at
* once.
*/
{
char *id_string;
u_char sblkctl;
u_char sblkctl_orig;
sblkctl_orig = AHC_INB(ahc, SBLKCTL);
sblkctl = sblkctl_orig ^ AUTOFLUSHDIS;
AHC_OUTB(ahc, SBLKCTL, sblkctl);
sblkctl = AHC_INB(ahc, SBLKCTL);
if(sblkctl != sblkctl_orig)
{
id_string = "aic7770 >= Rev E, ";
/*
* Ensure autoflush is enabled
*/
sblkctl &= ~AUTOFLUSHDIS;
AHC_OUTB(ahc, SBLKCTL, sblkctl);
/* Allow paging on this adapter */
ahc->flags |= AHC_PAGESCBS;
}
else
id_string = "aic7770 <= Rev C, ";
printf("%s: %s", ahc_name(ahc), id_string);
}
/* Setup the FIFO threshold and the bus off time */
{
u_char 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)){
ahc_free(ahc);
return;
}
/*
* Enable the board's BUS drivers
*/
AHC_OUTB(ahc, BCTL, ENABLE);
intrstr = eisa_intr_string(ec, ih);
/*
* The IRQMS bit enables level sensitive interrupts only allow
* IRQ sharing if its set.
*/
ahc->sc_ih = eisa_intr_establish(ec, ih,
ahc->pause & IRQMS ? IST_LEVEL : IST_EDGE, IPL_BIO, ahc_intr, ahc);
if (ahc->sc_ih == NULL) {
printf("%s: couldn't establish interrupt",
ahc->sc_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
ahc_free(ahc);
return;
}
if (intrstr != NULL)
printf("%s: interrupting at %s\n", ahc->sc_dev.dv_xname,
intrstr);
/* Attach sub-devices - always succeeds */
ahc_attach(ahc);
}