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

1.1     ! nbrk        1: /*     $OpenBSD: if_mtd_pci.c,v 1.10 2005/08/09 04:10:12 mickey Exp $  */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2003 Oleg Safiullin <form@pdp11.org.ru>
        !             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 unmodified, this list of conditions, and the following
        !            12:  *    disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            27:  * SUCH DAMAGE.
        !            28:  *
        !            29:  */
        !            30:
        !            31: #include <sys/param.h>
        !            32: #include <sys/device.h>
        !            33: #include <sys/systm.h>
        !            34: #include <sys/socket.h>
        !            35:
        !            36: #include <net/if.h>
        !            37: #include <net/if_media.h>
        !            38:
        !            39: #ifdef INET
        !            40: #include <netinet/in.h>
        !            41: #include <netinet/if_ether.h>
        !            42: #endif
        !            43:
        !            44: #include <machine/bus.h>
        !            45:
        !            46: #include <dev/mii/miivar.h>
        !            47:
        !            48: #include <dev/pci/pcidevs.h>
        !            49: #include <dev/pci/pcireg.h>
        !            50: #include <dev/pci/pcivar.h>
        !            51:
        !            52: #include <dev/ic/mtd8xxreg.h>
        !            53: #include <dev/ic/mtd8xxvar.h>
        !            54:
        !            55: static int mtd_pci_match(struct device *, void *, void *);
        !            56: static void mtd_pci_attach(struct device *, struct device *, void *);
        !            57:
        !            58:
        !            59: struct cfattach mtd_pci_ca = {
        !            60:        sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach
        !            61: };
        !            62:
        !            63: const static struct pci_matchid mtd_pci_devices[] = {
        !            64:        { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD800 },
        !            65:        { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 },
        !            66:        { PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD891 },
        !            67: };
        !            68:
        !            69:
        !            70: static int
        !            71: mtd_pci_match(struct device *parent, void *match, void *aux)
        !            72: {
        !            73:        return (pci_matchbyid((struct pci_attach_args *)aux, mtd_pci_devices,
        !            74:            sizeof(mtd_pci_devices) / sizeof(mtd_pci_devices[0])));
        !            75: }
        !            76:
        !            77:
        !            78: static void
        !            79: mtd_pci_attach(struct device *parent, struct device *self, void *aux)
        !            80: {
        !            81:        struct mtd_softc *sc = (void *)self;
        !            82:        struct pci_attach_args *pa = aux;
        !            83:        pci_intr_handle_t ih;
        !            84:        const char *intrstr = NULL;
        !            85:        u_int32_t command;
        !            86:        bus_size_t iosize;
        !            87:
        !            88:        sc->sc_devid = PCI_PRODUCT(pa->pa_id);
        !            89:        command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
        !            90:        if (sc->sc_devid == PCI_PRODUCT_MYSON_MTD800 &&
        !            91:            pci_conf_read(pa->pa_pc, pa->pa_tag, MTD_PCI_LOIO) & 0x300) {
        !            92:                pa->pa_flags &= ~PCI_FLAGS_IO_ENABLED;
        !            93:                command &= ~PCI_COMMAND_IO_ENABLE;
        !            94:        }
        !            95:        pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
        !            96:
        !            97:        command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
        !            98:        if (command & PCI_COMMAND_MEM_ENABLE) {
        !            99:                if (pci_mapreg_map(pa, MTD_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
        !           100:                    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
        !           101:                        printf(": can't map mem space\n");
        !           102:                        return;
        !           103:                }
        !           104:        } else {
        !           105:                if (pci_mapreg_map(pa, MTD_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
        !           106:                    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
        !           107:                        printf(": can't map io space\n");
        !           108:                        return;
        !           109:                }
        !           110:        }
        !           111:
        !           112:        /*
        !           113:         * Allocate our interrupt.
        !           114:         */
        !           115:        if (pci_intr_map(pa, &ih)) {
        !           116:                printf(": couldn't map interrupt\n");
        !           117:                bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
        !           118:                return;
        !           119:        }
        !           120:
        !           121:        intrstr = pci_intr_string(pa->pa_pc, ih);
        !           122:        if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_intr, sc,
        !           123:            self->dv_xname) == NULL) {
        !           124:                printf(": couldn't establish interrupt");
        !           125:                if (intrstr != NULL)
        !           126:                        printf(" at %s", intrstr);
        !           127:                printf("\n");
        !           128:                bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
        !           129:                return;
        !           130:        }
        !           131:        printf(": %s", intrstr);
        !           132:
        !           133:        sc->sc_dmat = pa->pa_dmat;
        !           134:        mtd_attach(sc);
        !           135: }