296 lines
8.9 KiB
C
296 lines
8.9 KiB
C
/* $NetBSD: cac_eisa.c,v 1.10 2005/02/27 00:26:59 perry Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 2000 Jonathan Lemon
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* Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net>
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* All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* EISA front-end for cac(4) driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: cac_eisa.c,v 1.10 2005/02/27 00:26:59 perry Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/eisa/eisavar.h>
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#include <dev/eisa/eisadevs.h>
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#include <dev/ic/cacreg.h>
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#include <dev/ic/cacvar.h>
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#define CAC_EISA_SLOT_OFFSET 0x0c88
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#define CAC_EISA_IOSIZE 0x0017
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#define CAC_EISA_IOCONF 0x38
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static void cac_eisa_attach(struct device *, struct device *, void *);
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static int cac_eisa_match(struct device *, struct cfdata *, void *);
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static struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *);
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static int cac_eisa_l0_fifo_full(struct cac_softc *);
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static void cac_eisa_l0_intr_enable(struct cac_softc *, int);
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static int cac_eisa_l0_intr_pending(struct cac_softc *);
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static void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *);
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CFATTACH_DECL(cac_eisa, sizeof(struct cac_softc),
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cac_eisa_match, cac_eisa_attach, NULL, NULL);
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static const struct cac_linkage cac_eisa_l0 = {
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cac_eisa_l0_completed,
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cac_eisa_l0_fifo_full,
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cac_eisa_l0_intr_enable,
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cac_eisa_l0_intr_pending,
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cac_eisa_l0_submit
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};
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struct cac_eisa_type {
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const char *ct_prodstr;
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const char *ct_typestr;
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const struct cac_linkage *ct_linkage;
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} static cac_eisa_type[] = {
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{ "CPQ4001", "IDA", &cac_eisa_l0 },
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{ "CPQ4002", "IDA-2", &cac_eisa_l0 },
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{ "CPQ4010", "IEAS", &cac_eisa_l0 },
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{ "CPQ4020", "SMART", &cac_eisa_l0 },
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{ "CPQ4030", "SMART-2/E", &cac_l0 },
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};
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static int
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cac_eisa_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct eisa_attach_args *ea;
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int i;
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ea = aux;
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for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++)
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if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0)
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return (1);
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return (0);
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}
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static void
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cac_eisa_attach(struct device *parent, struct device *self, void *aux)
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{
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struct eisa_attach_args *ea;
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bus_space_handle_t ioh;
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eisa_chipset_tag_t ec;
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eisa_intr_handle_t ih;
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struct cac_softc *sc;
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bus_space_tag_t iot;
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const char *intrstr;
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int irq, i;
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ea = aux;
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sc = (struct cac_softc *)self;
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iot = ea->ea_iot;
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ec = ea->ea_ec;
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if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
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CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) {
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printf("can't map i/o space\n");
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return;
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}
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sc->sc_iot = iot;
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sc->sc_ioh = ioh;
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sc->sc_dmat = ea->ea_dmat;
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/*
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* Map and establish the interrupt.
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*/
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switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) {
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case 0x20:
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irq = 10;
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break;
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case 0x10:
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irq = 11;
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break;
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case 0x40:
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irq = 14;
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break;
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case 0x80:
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irq = 15;
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break;
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default:
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printf("controller on invalid IRQ\n");
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return;
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}
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if (eisa_intr_map(ec, irq, &ih)) {
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printf("can't map interrupt (%d)\n", irq);
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return;
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}
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intrstr = eisa_intr_string(ec, ih);
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if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
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cac_intr, sc)) == NULL) {
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printf("can't establish interrupt");
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if (intrstr != NULL)
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printf(" at %s", intrstr);
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printf("\n");
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return;
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}
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/*
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* Print board type and attach to the bus-independent code.
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*/
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for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++)
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if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0)
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break;
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printf(": Compaq %s\n", cac_eisa_type[i].ct_typestr);
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memcpy(&sc->sc_cl, cac_eisa_type[i].ct_linkage, sizeof(sc->sc_cl));
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cac_init(sc, intrstr, 0);
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}
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/*
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* Linkage specific to EISA boards.
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*/
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static int
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cac_eisa_l0_fifo_full(struct cac_softc *sc)
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{
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return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
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CAC_EISA_CHANNEL_CLEAR) == 0);
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}
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static void
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cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
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{
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u_int16_t size;
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/*
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* On these boards, `ccb_hdr.size' is actually for control flags.
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* Set it to zero and pass the value by means of an I/O port.
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*/
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size = le16toh(ccb->ccb_hdr.size) << 2;
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ccb->ccb_hdr.size = 0;
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bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs,
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sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
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cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
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cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr);
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cac_outw(sc, CAC_EISAREG_LIST_LEN, size);
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cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY);
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}
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static struct cac_ccb *
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cac_eisa_l0_completed(struct cac_softc *sc)
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{
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struct cac_ccb *ccb;
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u_int32_t off;
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u_int8_t status;
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if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
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CAC_EISA_CHANNEL_BUSY) == 0)
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return (NULL);
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cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY);
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off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR);
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status = cac_inb(sc, CAC_EISAREG_LIST_STATUS);
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cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR);
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if (off == 0)
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return (NULL);
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off = (off & ~3) - sc->sc_ccbs_paddr;
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ccb = (struct cac_ccb *)(sc->sc_ccbs + off);
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bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb),
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BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
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ccb->ccb_req.error = status;
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return (ccb);
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}
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static int
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cac_eisa_l0_intr_pending(struct cac_softc *sc)
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{
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return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) &
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CAC_EISA_CHANNEL_BUSY);
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}
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static void
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cac_eisa_l0_intr_enable(struct cac_softc *sc, int state)
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{
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if (state) {
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cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL,
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~CAC_EISA_CHANNEL_CLEAR);
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cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL,
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CAC_EISA_CHANNEL_BUSY);
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cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE);
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cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE);
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} else
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cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE);
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}
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