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      1 /* $NetBSD: fdc_sableio.c,v 1.17 2021/05/07 16:58:34 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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>			/* RCS ID & Copyright macro defns */
     33 
     34 __KERNEL_RCSID(0, "$NetBSD: fdc_sableio.c,v 1.17 2021/05/07 16:58:34 thorpej Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/callout.h>
     39 #include <sys/device.h>
     40 #include <sys/buf.h>
     41 
     42 #include <sys/bus.h>
     43 #include <machine/intr.h>
     44 
     45 #include <dev/isa/isavar.h>
     46 #include <dev/isa/isadmavar.h>
     47 
     48 #include <dev/isa/fdreg.h>
     49 #include <dev/isa/fdcvar.h>
     50 
     51 #include <dev/pci/pcivar.h>
     52 
     53 #include <alpha/sableio/sableiovar.h>
     54 
     55 static int	fdc_sableio_match(device_t, cfdata_t, void *);
     56 static void	fdc_sableio_attach(device_t, device_t, void *);
     57 
     58 struct fdc_sableio_softc {
     59 	struct	fdc_softc sc_fdc;	/* real "fdc" softc */
     60 
     61 	bus_space_handle_t sc_baseioh;	/* base I/O handle */
     62 };
     63 
     64 CFATTACH_DECL_NEW(fdc_sableio, sizeof(struct fdc_sableio_softc),
     65     fdc_sableio_match, fdc_sableio_attach, NULL, NULL);
     66 
     67 static int
     68 fdc_sableio_match(device_t parent, cfdata_t match, void *aux)
     69 {
     70 	struct sableio_attach_args *sa = aux;
     71 
     72 	/* Always present. */
     73 	if (strcmp(sa->sa_name, match->cf_name) == 0)
     74 		return (1);
     75 
     76 	return (0);
     77 }
     78 
     79 static void
     80 fdc_sableio_attach(device_t parent, device_t self, void *aux)
     81 {
     82 	struct fdc_sableio_softc *sfdc = device_private(self);
     83 	struct fdc_softc *fdc = &sfdc->sc_fdc;
     84 	struct sableio_attach_args *sa = aux;
     85 	const char *intrstr;
     86 	char buf[PCI_INTRSTR_LEN];
     87 	pci_intr_handle_t ih;
     88 
     89 	aprint_normal("\n");
     90 
     91 	fdc->sc_dev = self;
     92 	fdc->sc_iot = sa->sa_iot;
     93 	fdc->sc_ic = sa->sa_ic;
     94 	fdc->sc_drq = sa->sa_drq;
     95 
     96 	if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr, 6 /* FDC_NPORT */, 0,
     97 	    &sfdc->sc_baseioh)) {
     98 		aprint_error_dev(self, "unable to map I/O space\n");
     99 		return;
    100 	}
    101 
    102 	if (bus_space_subregion(fdc->sc_iot, sfdc->sc_baseioh, 2, 4,
    103 	    &fdc->sc_ioh)) {
    104 		aprint_error_dev(self, "unable to subregion I/O space\n");
    105 		return;
    106 	}
    107 
    108 	if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr + fdctl + 2, 1, 0,
    109 	    &fdc->sc_fdctlioh)) {
    110 		aprint_error_dev(self, "unable to map CTL I/O space\n");
    111 		return;
    112 	}
    113 
    114 	alpha_pci_intr_handle_init(&ih, sa->sa_sableirq[0], 0);
    115 
    116 	intrstr = pci_intr_string(sa->sa_pc, ih, buf, sizeof(buf));
    117 	fdc->sc_ih = pci_intr_establish(sa->sa_pc, ih, IPL_BIO,
    118 	    fdcintr, fdc);
    119 	if (fdc->sc_ih == NULL) {
    120 		aprint_error_dev(self, "unable to establish interrupt");
    121 		if (intrstr != NULL)
    122 			aprint_error(" at %s", intrstr);
    123 		aprint_error("\n");
    124 		return;
    125 	}
    126 	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
    127 
    128 	fdcattach(fdc);
    129 }
    130