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      1 /*	$NetBSD: iha_pci.c,v 1.20 2018/12/09 11:14:02 jdolecek Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2001 Izumi Tsutsui.  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  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 /*-
     28  * Device driver for the INI-9XXXU/UW or INIC-940/950  PCI SCSI Controller.
     29  *
     30  *  Written for 386bsd and FreeBSD by
     31  *	Winston Hung		<winstonh (at) initio.com>
     32  *
     33  * Copyright (c) 1997-1999 Initio Corp.
     34  * Copyright (c) 2000 Ken Westerback
     35  * All rights reserved.
     36  *
     37  * Redistribution and use in source and binary forms, with or without
     38  * modification, are permitted provided that the following conditions
     39  * are met:
     40  * 1. Redistributions of source code must retain the above copyright
     41  *    notice, this list of conditions and the following disclaimer,
     42  *    without modification, immediately at the beginning of the file.
     43  * 2. The name of the author may not be used to endorse or promote products
     44  *    derived from this software without specific prior written permission.
     45  *
     46  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     47  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     48  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     49  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
     50  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     51  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     52  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     54  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     55  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     56  * THE POSSIBILITY OF SUCH DAMAGE.
     57  */
     58 
     59 /*
     60  * Ported to NetBSD by Izumi Tsutsui <tsutsui (at) NetBSD.org> from OpenBSD:
     61  * $OpenBSD: iha_pci.c,v 1.2 2001/03/29 23:53:38 krw Exp $
     62  */
     63 
     64 #include <sys/cdefs.h>
     65 __KERNEL_RCSID(0, "$NetBSD: iha_pci.c,v 1.20 2018/12/09 11:14:02 jdolecek Exp $");
     66 
     67 #include <sys/param.h>
     68 #include <sys/systm.h>
     69 #include <sys/device.h>
     70 
     71 #include <dev/pci/pcidevs.h>
     72 #include <dev/pci/pcivar.h>
     73 
     74 #include <dev/scsipi/scsipi_all.h>
     75 #include <dev/scsipi/scsi_all.h>
     76 #include <dev/scsipi/scsiconf.h>
     77 
     78 #include <dev/ic/ihavar.h>
     79 
     80 static int  iha_pci_match(device_t, cfdata_t, void *);
     81 static void iha_pci_attach(device_t, device_t, void *);
     82 
     83 CFATTACH_DECL_NEW(iha_pci, sizeof(struct iha_softc),
     84     iha_pci_match, iha_pci_attach, NULL, NULL);
     85 
     86 static int
     87 iha_pci_match(device_t parent, cfdata_t cf, void *aux)
     88 {
     89 	struct pci_attach_args *pa = aux;
     90 
     91 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INITIO)
     92 		return 0;
     93 
     94 	switch (PCI_PRODUCT(pa->pa_id)) {
     95 	case PCI_PRODUCT_INITIO_I940:
     96 	case PCI_PRODUCT_INITIO_I950:
     97 		return 1;
     98 	}
     99 
    100 	return 0;
    101 }
    102 
    103 static void
    104 iha_pci_attach(device_t parent, device_t self, void *aux)
    105 {
    106 	struct iha_softc *sc = device_private(self);
    107 	struct pci_attach_args *pa = aux;
    108 	bus_space_tag_t iot;
    109 	bus_space_handle_t ioh;
    110 	pci_intr_handle_t ih;
    111 	const char *intrstr;
    112 	pcireg_t command;
    113 	int ioh_valid;
    114 	char intrbuf[PCI_INTRSTR_LEN];
    115 
    116 	sc->sc_dev = self;
    117 
    118 	pci_aprint_devinfo(pa, NULL);
    119 
    120 	command  = pci_conf_read(pa->pa_pc,pa->pa_tag,PCI_COMMAND_STATUS_REG);
    121 	command |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_PARITY_ENABLE;
    122 
    123 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
    124 
    125 	/*
    126 	 * XXX - Tried memory mapping (using code from adw and ahc)
    127 	 *	 rather that IO mapping, but it didn't work at all..
    128 	 */
    129 	ioh_valid = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
    130 	    &iot, &ioh, NULL, NULL);
    131 
    132 	if (ioh_valid != 0) {
    133 		aprint_error_dev(self, "unable to map registers\n");
    134 		return;
    135 	}
    136 
    137 	sc->sc_iot  = iot;
    138 	sc->sc_ioh  = ioh;
    139 	sc->sc_dmat = pa->pa_dmat;
    140 
    141 	if (pci_intr_map(pa, &ih)) {
    142 		aprint_error_dev(self, "couldn't map interrupt\n");
    143 		return;
    144 	}
    145 	intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf));
    146 
    147 	sc->sc_ih = pci_intr_establish_xname(pa->pa_pc, ih, IPL_BIO, iha_intr,
    148 	    sc, device_xname(self));
    149 
    150 	if (sc->sc_ih == NULL) {
    151 		aprint_error_dev(self, "couldn't establish interrupt");
    152 		if (intrstr != NULL)
    153 			aprint_error(" at %s", intrstr);
    154 		aprint_error("\n");
    155 		return;
    156 	}
    157 	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
    158 
    159 	iha_attach(sc);
    160 }
    161