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Annotation of sys/dev/pci/if_mtd_pci.c, Revision 1.1.1.1

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: }