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      1 /*	$NetBSD: bha_pci.c,v 1.41 2016/10/13 17:11:09 jdolecek Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles M. Hannum.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: bha_pci.c,v 1.41 2016/10/13 17:11:09 jdolecek Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/device.h>
     38 
     39 #include <sys/bus.h>
     40 #include <sys/intr.h>
     41 
     42 #include <dev/scsipi/scsipi_all.h>
     43 #include <dev/scsipi/scsiconf.h>
     44 
     45 #include <dev/pci/pcivar.h>
     46 #include <dev/pci/pcidevs.h>
     47 
     48 #include <dev/ic/bhareg.h>
     49 #include <dev/ic/bhavar.h>
     50 
     51 #define	PCI_CBIO	0x10
     52 
     53 /*
     54  * Check the slots looking for a board we recognise
     55  * If we find one, note its address (slot) and call
     56  * the actual probe routine to check it out.
     57  */
     58 static int
     59 bha_pci_match(device_t parent, cfdata_t match, void *aux)
     60 {
     61 	struct pci_attach_args *pa = aux;
     62 	bus_space_tag_t iot;
     63 	bus_space_handle_t ioh;
     64 	bus_size_t iosize;
     65 	int rv;
     66 
     67 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_BUSLOGIC)
     68 		return (0);
     69 
     70 	if (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BUSLOGIC_MULTIMASTER_NC &&
     71 	    PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BUSLOGIC_MULTIMASTER)
     72 		return (0);
     73 
     74 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &iot, &ioh,
     75 	    NULL, &iosize))
     76 		return (0);
     77 
     78 	rv = bha_find(iot, ioh);
     79 
     80 	bus_space_unmap(iot, ioh, iosize);
     81 
     82 	return (rv);
     83 }
     84 
     85 /*
     86  * Attach all the sub-devices we can find
     87  */
     88 static void
     89 bha_pci_attach(device_t parent, device_t self, void *aux)
     90 {
     91 	struct pci_attach_args *pa = aux;
     92 	struct bha_softc *sc = device_private(self);
     93 	bus_space_tag_t iot;
     94 	bus_space_handle_t ioh;
     95 	pci_chipset_tag_t pc = pa->pa_pc;
     96 	pci_intr_handle_t ih;
     97 	pcireg_t csr;
     98 	const char *model, *intrstr;
     99 	char intrbuf[PCI_INTRSTR_LEN];
    100 
    101 	sc->sc_dev = self;
    102 
    103 	aprint_naive(": SCSI controller\n");
    104 
    105 	if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BUSLOGIC_MULTIMASTER_NC)
    106 		model = "BusLogic 9xxC SCSI";
    107 	else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BUSLOGIC_MULTIMASTER)
    108 		model = "BusLogic 9xxC SCSI";
    109 	else
    110 		model = "unknown model!";
    111 	aprint_normal(": %s\n", model);
    112 
    113 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &iot, &ioh,
    114 	    NULL, NULL)) {
    115 		aprint_error_dev(sc->sc_dev, "unable to map device registers\n");
    116 		return;
    117 	}
    118 
    119 	sc->sc_iot = iot;
    120 	sc->sc_ioh = ioh;
    121 	sc->sc_dmat = pa->pa_dmat;
    122 	if (!bha_find(iot, ioh))
    123 		panic("bha_pci_attach: bha_find failed");
    124 
    125 	sc->sc_dmaflags = 0;
    126 
    127 	csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
    128 	pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
    129 	    csr | PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE);
    130 
    131 	if (pci_intr_map(pa, &ih)) {
    132 		aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
    133 		return;
    134 	}
    135 	intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
    136 	sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_BIO, bha_intr, sc,
    137 	    device_xname(sc->sc_dev));
    138 	if (sc->sc_ih == NULL) {
    139 		aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
    140 		if (intrstr != NULL)
    141 			aprint_error(" at %s", intrstr);
    142 		aprint_error("\n");
    143 		return;
    144 	}
    145 	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
    146 
    147 	bha_attach(sc);
    148 
    149 	bha_disable_isacompat(sc);
    150 }
    151 
    152 CFATTACH_DECL_NEW(bha_pci, sizeof(struct bha_softc),
    153     bha_pci_match, bha_pci_attach, NULL, NULL);
    154