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/* $OpenBSD: cac_eisa.c,v 1.7 2022/04/06 18:59:28 naddy Exp $ */
/* $NetBSD: cac_eisa.c,v 1.1 2000/09/01 12:15:20 ad Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 2000 Jonathan Lemon
* Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net>
* 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,
* without modification, immediately at the beginning of the file.
* 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.
*/
/*
* EISA front-end for cac(4) driver.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/eisa/eisavar.h>
#include <dev/eisa/eisadevs.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_disk.h>
#include <scsi/scsiconf.h>
#include <dev/ic/cacreg.h>
#include <dev/ic/cacvar.h>
#define CAC_EISA_SLOT_OFFSET 0x0c88
#define CAC_EISA_IOSIZE 0x0017
#define CAC_EISA_IOCONF 0x38
int cac_eisa_match(struct device *, void *, void *);
void cac_eisa_attach(struct device *, struct device *, void *);
struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *);
int cac_eisa_l0_fifo_full(struct cac_softc *);
void cac_eisa_l0_intr_enable(struct cac_softc *, int);
int cac_eisa_l0_intr_pending(struct cac_softc *);
void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *);
const struct cfattach cac_eisa_ca = {
sizeof(struct cac_softc), cac_eisa_match, cac_eisa_attach
};
static const
struct cac_linkage cac_eisa_l0 = {
cac_eisa_l0_completed,
cac_eisa_l0_fifo_full,
cac_eisa_l0_intr_enable,
cac_eisa_l0_intr_pending,
cac_eisa_l0_submit
};
static const
struct cac_eisa_type {
const char *ct_prodstr;
const char *ct_typestr;
const struct cac_linkage *ct_linkage;
} cac_eisa_type[] = {
{ "CPQ4001", "IDA", &cac_eisa_l0 },
{ "CPQ4002", "IDA-2", &cac_eisa_l0 },
{ "CPQ4010", "IEAS", &cac_eisa_l0 },
{ "CPQ4020", "SMART", &cac_eisa_l0 },
{ "CPQ4030", "SMART-2/E", &cac_l0 },
};
int
cac_eisa_match(struct device *parent, void *match, void *aux)
{
struct eisa_attach_args *ea;
int i;
ea = aux;
for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++)
if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0)
return (1);
return (0);
}
void
cac_eisa_attach(struct device *parent, struct device *self, void *aux)
{
struct eisa_attach_args *ea;
bus_space_handle_t ioh;
eisa_chipset_tag_t ec;
eisa_intr_handle_t ih;
struct cac_softc *sc;
bus_space_tag_t iot;
const char *intrstr;
int irq, i;
ea = aux;
sc = (struct cac_softc *)self;
iot = ea->ea_iot;
ec = ea->ea_ec;
if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) {
printf(": can't map i/o space\n");
return;
}
/*
* Print board type and attach to the bus-independent code.
*/
for (i = 0; i < nitems(cac_eisa_type); i++)
if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0)
break;
if (i == nitems(cac_eisa_type)) {
printf(": failed to attach %s\n", ea->ea_idstring);
return;
}
sc->sc_iot = iot;
sc->sc_ioh = ioh;
sc->sc_dmat = ea->ea_dmat;
/*
* Map and establish the interrupt.
*/
switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) {
case 0x20:
irq = 10;
break;
case 0x10:
irq = 11;
break;
case 0x40:
irq = 14;
break;
case 0x80:
irq = 15;
break;
default:
printf(": controller on invalid IRQ\n");
return;
}
if (eisa_intr_map(ec, irq, &ih)) {
printf(": can't map interrupt (%d)\n", irq);
return;
}
intrstr = eisa_intr_string(ec, ih);
if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
cac_intr, sc, sc->sc_dv.dv_xname)) == NULL) {
printf(": can't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
printf(" %s: Compaq %s\n", intrstr, cac_eisa_type[i].ct_typestr);
sc->sc_cl = cac_eisa_type[i].ct_linkage;
cac_init(sc, 0);
}
/*
* Linkage specific to EISA boards.
*/
int
cac_eisa_l0_fifo_full(struct cac_softc *sc)
{
return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
CAC_EISA_CHANNEL_CLEAR) == 0);
}
void
cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
{
u_int16_t size;
/*
* On these boards, `ccb_hdr.size' is actually for control flags.
* Set it to zero and pass the value by means of an I/O port.
*/
size = letoh16(ccb->ccb_hdr.size) << 2;
ccb->ccb_hdr.size = 0;
bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs,
sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr);
cac_outw(sc, CAC_EISAREG_LIST_LEN, size);
cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY);
}
struct cac_ccb *
cac_eisa_l0_completed(struct cac_softc *sc)
{
struct cac_ccb *ccb;
u_int32_t off;
u_int8_t status;
if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
CAC_EISA_CHANNEL_BUSY) == 0)
return (NULL);
cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY);
off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR);
status = cac_inb(sc, CAC_EISAREG_LIST_STATUS);
cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
if (off == 0)
return (NULL);
off = (off & ~3) - sc->sc_ccbs_paddr;
ccb = (struct cac_ccb *)(sc->sc_ccbs + off);
bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb),
BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
ccb->ccb_req.error = status;
return (ccb);
}
int
cac_eisa_l0_intr_pending(struct cac_softc *sc)
{
return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
CAC_EISA_CHANNEL_BUSY);
}
void
cac_eisa_l0_intr_enable(struct cac_softc *sc, int state)
{
if (state) {
cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL,
~CAC_EISA_CHANNEL_CLEAR);
cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL,
CAC_EISA_CHANNEL_BUSY);
cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE);
cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE);
} else
cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE);
}
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