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

1.1       nbrk        1: /*     $OpenBSD: if_pgt_pci.c,v 1.9 2006/11/18 20:44:40 grange Exp $  */
                      2:
                      3: /*
                      4:  * Copyright (c) 2006 Marcus Glocker <mglocker@openbsd.org>
                      5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: /*
                     20:  * PCI front-end for the PrismGT
                     21:  */
                     22:
                     23: #include "bpfilter.h"
                     24:
                     25: #include <sys/param.h>
                     26: #include <sys/sockio.h>
                     27: #include <sys/mbuf.h>
                     28: #include <sys/kernel.h>
                     29: #include <sys/socket.h>
                     30: #include <sys/systm.h>
                     31: #include <sys/malloc.h>
                     32: #include <sys/timeout.h>
                     33: #include <sys/device.h>
                     34:
                     35: #include <machine/bus.h>
                     36: #include <machine/intr.h>
                     37:
                     38: #include <net/if.h>
                     39: #include <net/if_dl.h>
                     40: #include <net/if_media.h>
                     41:
                     42: #include <netinet/in.h>
                     43: #include <netinet/if_ether.h>
                     44:
                     45: #include <net80211/ieee80211_var.h>
                     46: #include <net80211/ieee80211_radiotap.h>
                     47:
                     48: #include <dev/ic/pgtreg.h>
                     49: #include <dev/ic/pgtvar.h>
                     50:
                     51: #include <dev/pci/pcireg.h>
                     52: #include <dev/pci/pcivar.h>
                     53: #include <dev/pci/pcidevs.h>
                     54:
                     55: /* Base Address Register */
                     56: #define PGT_PCI_BAR0   0x10
                     57:
                     58: int    pgt_pci_match(struct device *, void *, void *);
                     59: void   pgt_pci_attach(struct device *, struct device *, void *);
                     60: int    pgt_pci_detach(struct device *, int);
                     61:
                     62: struct pgt_pci_softc {
                     63:        struct pgt_softc        sc_pgt;
                     64:
                     65:        pci_chipset_tag_t       sc_pc;
                     66:        void                    *sc_ih;
                     67:        bus_size_t              sc_mapsize;
                     68: };
                     69:
                     70: struct cfattach pgt_pci_ca = {
                     71:        sizeof(struct pgt_pci_softc), pgt_pci_match, pgt_pci_attach,
                     72:        pgt_pci_detach
                     73: };
                     74:
                     75: const struct pci_matchid pgt_pci_devices[] = {
                     76:        { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3877 },
                     77:        { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3890 }
                     78: };
                     79:
                     80: int
                     81: pgt_pci_match(struct device *parent, void *match, void *aux)
                     82: {
                     83:        return (pci_matchbyid((struct pci_attach_args *)aux, pgt_pci_devices,
                     84:            sizeof(pgt_pci_devices) / sizeof(pgt_pci_devices[0])));
                     85: }
                     86:
                     87: void
                     88: pgt_pci_attach(struct device *parent, struct device *self, void *aux)
                     89: {
                     90:        struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self;
                     91:        struct pgt_softc *sc = &psc->sc_pgt;
                     92:        struct pci_attach_args *pa = aux;
                     93:        const char *intrstr = NULL;
                     94:        pci_intr_handle_t ih;
                     95:        int error;
                     96:
                     97:        sc->sc_dmat = pa->pa_dmat;
                     98:        psc->sc_pc = pa->pa_pc;
                     99:
                    100:        /* remember chipset */
                    101:        if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTERSIL_ISL3877)
                    102:                sc->sc_flags |= SC_ISL3877;
                    103:
                    104:        /* map control / status registers */
                    105:        error = pci_mapreg_map(pa, PGT_PCI_BAR0,
                    106:            PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
                    107:            &sc->sc_iotag, &sc->sc_iohandle, NULL, &psc->sc_mapsize, 0);
                    108:        if (error != 0) {
                    109:                printf(": could not map memory space\n");
                    110:                return;
                    111:        }
                    112:
                    113:        /* map interrupt */
                    114:        if (pci_intr_map(pa, &ih) != 0) {
                    115:                printf(": could not map interrupt\n");
                    116:                return;
                    117:        }
                    118:
                    119:        /* disable all interrupts */
                    120:        bus_space_write_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN, 0);
                    121:        (void)bus_space_read_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN);
                    122:        DELAY(PGT_WRITEIO_DELAY);
                    123:
                    124:        /* establish interrupt */
                    125:        intrstr = pci_intr_string(psc->sc_pc, ih);
                    126:        psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET, pgt_intr, sc,
                    127:            sc->sc_dev.dv_xname);
                    128:        if (psc->sc_ih == NULL) {
                    129:                printf(": could not establish interrupt");
                    130:                if (intrstr != NULL)
                    131:                        printf(" at %s", intrstr);
                    132:                printf("\n");
                    133:                return;
                    134:        }
                    135:        printf(": %s\n", intrstr);
                    136:
                    137:        if (rootvp == NULL)
                    138:                mountroothook_establish(pgt_attach, sc);
                    139:        else
                    140:                pgt_attach(sc);
                    141: }
                    142:
                    143: int
                    144: pgt_pci_detach(struct device *self, int flags)
                    145: {
                    146:        struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self;
                    147:        struct pgt_softc *sc = &psc->sc_pgt;
                    148:
                    149:        pgt_detach(sc);
                    150:        pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
                    151:
                    152:        return (0);
                    153: }