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fwohci_pci.c revision 1.3 
      1 /*-
      2  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to The NetBSD Foundation
      6  * by Matt Thomas of 3am Software Foundry.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following 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  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *        This product includes software developed by the NetBSD
     19  *        Foundation, Inc. and its contributors.
     20  * 4. Neither the name of The NetBSD Foundation nor the names of its
     21  *    contributors may be used to endorse or promote products derived
     22  *    from this software without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     25  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     27  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     34  * POSSIBILITY OF SUCH DAMAGE.
     35  */
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/types.h>
     40 #include <sys/socket.h>
     41 #include <sys/device.h>
     42 
     43 #include <machine/bus.h>
     44 #include <machine/intr.h>
     45 
     46 #include <dev/pci/pcireg.h>
     47 #include <dev/pci/pcivar.h>
     48 #include <dev/ieee1394/ieee1394reg.h>
     49 #include <dev/ieee1394/ieee1394var.h>
     50 #include <dev/ieee1394/fwohcireg.h>
     51 #include <dev/ieee1394/fwohcivar.h>
     52 
     53 struct fwohci_pci_softc {
     54 	struct fwohci_softc psc_sc;
     55 	pci_chipset_tag_t psc_pc;
     56 	void *psc_ih;
     57 };
     58 
     59 static int fwohci_pci_match __P((struct device *, struct cfdata *, void *));
     60 static void fwohci_pci_attach __P((struct device *, struct device *, void *));
     61 
     62 struct cfattach fwohci_pci_ca = {
     63 	sizeof(struct fwohci_pci_softc), fwohci_pci_match, fwohci_pci_attach,
     64 #if 0
     65 	fwohci_pci_detach, fwohci_activate
     66 #endif
     67 };
     68 
     69 static int
     70 fwohci_pci_match(struct device *parent, struct cfdata *match, void *aux)
     71 {
     72         struct pci_attach_args *pa = (struct pci_attach_args *) aux;
     73 
     74         if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS &&
     75             PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_FIREWIRE &&
     76             PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI)
     77                 return 1;
     78 
     79         return 0;
     80 }
     81 
     82 static void
     83 fwohci_pci_attach(struct device *parent, struct device *self, void *aux)
     84 {
     85         struct pci_attach_args *pa = (struct pci_attach_args *) aux;
     86 	struct fwohci_pci_softc *psc = (struct fwohci_pci_softc *) self;
     87         char devinfo[256];
     88 	char const *intrstr;
     89 	pci_intr_handle_t ih;
     90 	u_int32_t csr;
     91 
     92         pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
     93         printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
     94 
     95 	psc->psc_sc.sc_dmat = pa->pa_dmat;
     96 	psc->psc_pc = pa->pa_pc;
     97 
     98         /* Map I/O registers */
     99         if (pci_mapreg_map(pa, PCI_OHCI_MAP_REGISTER, PCI_MAPREG_TYPE_MEM, 0,
    100                            &psc->psc_sc.sc_memt, &psc->psc_sc.sc_memh,
    101 			   NULL, &psc->psc_sc.sc_memsize)) {
    102                 printf("%s: can't map OCHI register space\n", self->dv_xname);
    103                 return;
    104         }
    105 
    106         /* Disable interrupts, so we don't get any spurious ones. */
    107         OHCI_CSR_WRITE(&psc->psc_sc, OHCI_REG_IntEventClear, OHCI_Int_MasterEnable);
    108 
    109         /* Enable the device. */
    110         csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
    111         pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
    112                        csr | PCI_COMMAND_MASTER_ENABLE);
    113 
    114 	/* Map and establish the interrupt. */
    115 	if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
    116 	    pa->pa_intrline, &ih)) {
    117         	printf("%s: couldn't map interrupt\n", self->dv_xname);
    118 		return;
    119 	}
    120 	intrstr = pci_intr_string(pa->pa_pc, ih);
    121 	psc->psc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, fwohci_intr, &psc->psc_sc);
    122 	if (psc->psc_ih == NULL) {
    123 		printf("%s: couldn't establish interrupt", self->dv_xname);
    124 		if (intrstr != NULL)
    125 			printf(" at %s", intrstr);
    126 		printf("\n");
    127 		return;
    128 	}
    129 	printf("%s: interrupting at %s\n", self->dv_xname, intrstr);
    130 
    131 	if (fwohci_init(&psc->psc_sc) != 0) {
    132 		pci_intr_disestablish(pa->pa_pc, psc->psc_ih);
    133 		bus_space_unmap(psc->psc_sc.sc_memt, psc->psc_sc.sc_memh,
    134 		    psc->psc_sc.sc_memsize);
    135 	}
    136 }
    137