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Annotation of sys/dev/pci/twe_pci.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: twe_pci.c,v 1.12 2006/08/25 04:35:03 brad Exp $       */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2000 Michael Shalayeff
        !             5:  * All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  *
        !            16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            19:  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
        !            20:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            21:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            22:  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            24:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
        !            25:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
        !            26:  * THE POSSIBILITY OF SUCH DAMAGE.
        !            27:  */
        !            28:
        !            29: #include <sys/param.h>
        !            30: #include <sys/systm.h>
        !            31: #include <sys/kernel.h>
        !            32: #include <sys/malloc.h>
        !            33: #include <sys/device.h>
        !            34:
        !            35: #include <dev/pci/pcidevs.h>
        !            36: #include <dev/pci/pcivar.h>
        !            37:
        !            38: #include <machine/bus.h>
        !            39:
        !            40: #include <scsi/scsi_all.h>
        !            41: #include <scsi/scsi_disk.h>
        !            42: #include <scsi/scsiconf.h>
        !            43:
        !            44: #include <dev/ic/twereg.h>
        !            45: #include <dev/ic/twevar.h>
        !            46:
        !            47: #define        TWE_BAR 0x10
        !            48:
        !            49: int    twe_pci_match(struct device *, void *, void *);
        !            50: void   twe_pci_attach(struct device *, struct device *, void *);
        !            51:
        !            52: struct cfattach twe_pci_ca = {
        !            53:        sizeof(struct twe_softc), twe_pci_match, twe_pci_attach
        !            54: };
        !            55:
        !            56: const struct pci_matchid twe_pci_devices[] = {
        !            57:        { PCI_VENDOR_3WARE, PCI_PRODUCT_3WARE_ESCALADE },
        !            58:        { PCI_VENDOR_3WARE, PCI_PRODUCT_3WARE_ESCALADE_ASIC }
        !            59: };
        !            60:
        !            61: int
        !            62: twe_pci_match(parent, match, aux)
        !            63:        struct device *parent;
        !            64:        void *match;
        !            65:        void *aux;
        !            66: {
        !            67:        return (pci_matchbyid((struct pci_attach_args *)aux, twe_pci_devices,
        !            68:            sizeof(twe_pci_devices)/sizeof(twe_pci_devices[0])));
        !            69: }
        !            70:
        !            71: void
        !            72: twe_pci_attach(parent, self, aux)
        !            73:        struct device *parent, *self;
        !            74:        void *aux;
        !            75: {
        !            76:        struct twe_softc *sc = (struct twe_softc *)self;
        !            77:        struct pci_attach_args *pa = aux;
        !            78:        pci_intr_handle_t ih;
        !            79:        const char *intrstr;
        !            80:        bus_size_t size;
        !            81:
        !            82:        if (pci_mapreg_map(pa, TWE_BAR, PCI_MAPREG_TYPE_IO, 0,
        !            83:            &sc->iot, &sc->ioh, NULL, &size, 0)) {
        !            84:                printf(": can't map controller i/o space\n");
        !            85:                return;
        !            86:        }
        !            87:        sc->dmat = pa->pa_dmat;
        !            88:
        !            89:        if (pci_intr_map(pa, &ih)) {
        !            90:                printf(": can't map interrupt\n");
        !            91:                bus_space_unmap(sc->iot, sc->ioh, size);
        !            92:                return;
        !            93:        }
        !            94:        intrstr = pci_intr_string(pa->pa_pc, ih);
        !            95:        sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, twe_intr, sc,
        !            96:            sc->sc_dev.dv_xname);
        !            97:        if (!sc->sc_ih) {
        !            98:                printf(": can't establish interrupt");
        !            99:                if (intrstr)
        !           100:                        printf(" at %s", intrstr);
        !           101:                printf("\n");
        !           102:                bus_space_unmap(sc->iot, sc->ioh, size);
        !           103:                return;
        !           104:        }
        !           105:
        !           106:        printf(": %s\n%s", intrstr, sc->sc_dev.dv_xname);
        !           107:
        !           108:        if (twe_attach(sc)) {
        !           109:                pci_intr_disestablish(pa->pa_pc, sc->sc_ih);
        !           110:                sc->sc_ih = NULL;
        !           111:                bus_space_unmap(sc->iot, sc->ioh, size);
        !           112:        }
        !           113: }