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fdc_sableio.c revision 1.11 
      1 /* $NetBSD: fdc_sableio.c,v 1.11 2011/07/01 19:19:50 dyoung 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 1.11 2011/07/01 19:19:50 dyoung 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 #if NRND > 0
     42 #include <sys/rnd.h>
     43 #endif
     44 
     45 #include <sys/bus.h>
     46 #include <machine/intr.h>
     47 
     48 #include <dev/isa/isavar.h>
     49 #include <dev/isa/isadmavar.h>
     50 
     51 #include <dev/isa/fdreg.h>
     52 #include <dev/isa/fdcvar.h>
     53 
     54 #include <dev/pci/pcivar.h>
     55 
     56 #include <alpha/sableio/sableiovar.h>
     57 
     58 int	fdc_sableio_match(device_t, cfdata_t, void *);
     59 void	fdc_sableio_attach(device_t, device_t, void *);
     60 
     61 struct fdc_sableio_softc {
     62 	struct	fdc_softc sc_fdc;	/* real "fdc" softc */
     63 
     64 	bus_space_handle_t sc_baseioh;	/* base I/O handle */
     65 };
     66 
     67 CFATTACH_DECL_NEW(fdc_sableio, sizeof(struct fdc_sableio_softc),
     68     fdc_sableio_match, fdc_sableio_attach, NULL, NULL);
     69 
     70 int
     71 fdc_sableio_match(device_t parent, cfdata_t match, void *aux)
     72 {
     73 	struct sableio_attach_args *sa = aux;
     74 
     75 	/* Always present. */
     76 	if (strcmp(sa->sa_name, match->cf_name) == 0)
     77 		return (1);
     78 
     79 	return (0);
     80 }
     81 
     82 void
     83 fdc_sableio_attach(device_t parent, device_t self, void *aux)
     84 {
     85 	struct fdc_sableio_softc *sfdc = device_private(self);
     86 	struct fdc_softc *fdc = &sfdc->sc_fdc;
     87 	struct sableio_attach_args *sa = aux;
     88 	const char *intrstr;
     89 
     90 	aprint_normal("\n");
     91 
     92 	fdc->sc_dev = self;
     93 	fdc->sc_iot = sa->sa_iot;
     94 	fdc->sc_ic = sa->sa_ic;
     95 	fdc->sc_drq = sa->sa_drq;
     96 
     97 	if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr, 6 /* FDC_NPORT */, 0,
     98 	    &sfdc->sc_baseioh)) {
     99 		aprint_error_dev(self, "unable to map I/O space\n");
    100 		return;
    101 	}
    102 
    103 	if (bus_space_subregion(fdc->sc_iot, sfdc->sc_baseioh, 2, 4,
    104 	    &fdc->sc_ioh)) {
    105 		aprint_error_dev(self, "unable to subregion I/O space\n");
    106 		return;
    107 	}
    108 
    109 	if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr + fdctl + 2, 1, 0,
    110 	    &fdc->sc_fdctlioh)) {
    111 		aprint_error_dev(self, "unable to map CTL I/O space\n");
    112 		return;
    113 	}
    114 
    115 	intrstr = pci_intr_string(sa->sa_pc, sa->sa_sableirq[0]);
    116 	fdc->sc_ih = pci_intr_establish(sa->sa_pc, sa->sa_sableirq[0],
    117 	    IPL_BIO, fdcintr, fdc);
    118 	if (fdc->sc_ih == NULL) {
    119 		aprint_error_dev(self, "unable to establish interrupt");
    120 		if (intrstr != NULL)
    121 			aprint_error(" at %s", intrstr);
    122 		aprint_error("\n");
    123 		return;
    124 	}
    125 	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
    126 
    127 	fdcattach(fdc);
    128 }
    129