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bha_pci.c revision 1.2 
      1 /*	$NetBSD: bha_pci.c,v 1.2 1996/09/01 00:20:25 mycroft Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1996 Charles M. Hannum.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Charles M. Hannum.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/types.h>
     33 #include <sys/param.h>
     34 #include <sys/device.h>
     35 
     36 #include <machine/bus.h>
     37 #include <machine/intr.h>
     38 
     39 #include <scsi/scsi_all.h>
     40 #include <scsi/scsiconf.h>
     41 
     42 #include <dev/pci/pcivar.h>
     43 #include <dev/pci/pcidevs.h>
     44 
     45 #include <dev/ic/bhareg.h>
     46 #include <dev/ic/bhavar.h>
     47 
     48 #define	PCI_CBIO	0x10
     49 
     50 int	bha_pci_match __P((struct device *, void *, void *));
     51 void	bha_pci_attach __P((struct device *, struct device *, void *));
     52 
     53 struct cfattach bha_pci_ca = {
     54 	sizeof(struct bha_softc), bha_pci_match, bha_pci_attach
     55 };
     56 
     57 /*
     58  * Check the slots looking for a board we recognise
     59  * If we find one, note it's address (slot) and call
     60  * the actual probe routine to check it out.
     61  */
     62 int
     63 bha_pci_match(parent, match, aux)
     64 	struct device *parent;
     65 	void *match, *aux;
     66 {
     67 	struct pci_attach_args *pa = aux;
     68 	bus_chipset_tag_t bc = pa->pa_bc;
     69 	bus_io_addr_t iobase;
     70 	bus_io_size_t iosize;
     71 	bus_io_handle_t ioh;
     72 	pci_chipset_tag_t pc = pa->pa_pc;
     73 	int rv;
     74 
     75 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_BUSLOGIC)
     76 		return (0);
     77 
     78 	if (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BUSLOGIC_OLD946C &&
     79 	    PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BUSLOGIC_946C)
     80 		return (0);
     81 
     82 	if (pci_io_find(pc, pa->pa_tag, PCI_CBIO, &iobase, &iosize))
     83 		return (0);
     84 	if (bus_io_map(bc, iobase, iosize, &ioh))
     85 		return (0);
     86 
     87 	rv = bha_find(bc, ioh, NULL);
     88 
     89 	bus_io_unmap(bc, ioh, iosize);
     90 
     91 	return (rv);
     92 }
     93 
     94 /*
     95  * Attach all the sub-devices we can find
     96  */
     97 void
     98 bha_pci_attach(parent, self, aux)
     99 	struct device *parent, *self;
    100 	void *aux;
    101 {
    102 	struct pci_attach_args *pa = aux;
    103 	struct bha_softc *sc = (void *)self;
    104 	bus_chipset_tag_t bc = pa->pa_bc;
    105 	bus_io_addr_t iobase;
    106 	bus_io_size_t iosize;
    107 	bus_io_handle_t ioh;
    108 	pci_chipset_tag_t pc = pa->pa_pc;
    109 	pci_intr_handle_t ih;
    110 	pcireg_t csr;
    111 	const char *model, *intrstr;
    112 
    113 	if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BUSLOGIC_OLD946C)
    114 		model = "BusLogic 9xxC SCSI";
    115 	else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BUSLOGIC_946C)
    116 		model = "BusLogic 9xxC SCSI";
    117 	else
    118 		model = "unknown model!";
    119 	printf(": %s\n", model);
    120 
    121 	if (pci_io_find(pc, pa->pa_tag, PCI_CBIO, &iobase, &iosize))
    122 		panic("bha_attach: pci_io_find failed!");
    123 	if (bus_io_map(bc, iobase, iosize, &ioh))
    124 		panic("bha_attach: bus_io_map failed!");
    125 
    126 	sc->sc_bc = bc;
    127 	sc->sc_ioh = ioh;
    128 	if (!bha_find(bc, ioh, sc))
    129 		panic("bha_attach: bha_find failed!");
    130 
    131 	csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
    132 	pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
    133 	    csr | PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE);
    134 
    135 	if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin,
    136 	    pa->pa_intrline, &ih)) {
    137 		printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
    138 		return;
    139 	}
    140 	intrstr = pci_intr_string(pc, ih);
    141 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, bha_intr, sc);
    142 	if (sc->sc_ih == NULL) {
    143 		printf("%s: couldn't establish interrupt",
    144 		    sc->sc_dev.dv_xname);
    145 		if (intrstr != NULL)
    146 			printf(" at %s", intrstr);
    147 		printf("\n");
    148 		return;
    149 	}
    150 	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
    151 
    152 	bha_attach(sc);
    153 }
    154