diff options
Diffstat (limited to 'sys/dev/eisa/cac_eisa.c')
| -rw-r--r-- | sys/dev/eisa/cac_eisa.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/sys/dev/eisa/cac_eisa.c b/sys/dev/eisa/cac_eisa.c new file mode 100644 index 00000000000..7c90dea630c --- /dev/null +++ b/sys/dev/eisa/cac_eisa.c @@ -0,0 +1,306 @@ +/* $OpenBSD: cac_eisa.c,v 1.1 2000/12/17 21:35:03 mickey 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. + * 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. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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/types.h> +#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 *); + +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(parent, match, aux) + struct device *parent; + void *match, *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(parent, self, aux) + 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; + } + + 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; + } + + /* + * Print board type and attach to the bus-independent code. + */ + 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) + break; + + 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, + 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, + 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); +} |