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wb_acpi.c revision 1.2 
      1 /* $NetBSD: wb_acpi.c,v 1.2 2010/03/05 14:00:17 jruoho Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2009 Jared D. McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     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,
     20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: wb_acpi.c,v 1.2 2010/03/05 14:00:17 jruoho Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/device.h>
     33 #include <sys/systm.h>
     34 
     35 #include <dev/acpi/acpivar.h>
     36 
     37 #include <dev/ic/w83l518dvar.h>
     38 #include <dev/ic/w83l518dreg.h>
     39 
     40 #include <dev/isa/isadmavar.h>
     41 
     42 #include <dev/sdmmc/sdmmcvar.h>
     43 
     44 static int	wb_acpi_match(device_t, cfdata_t, void *);
     45 static void	wb_acpi_attach(device_t, device_t, void *);
     46 static int	wb_acpi_detach(device_t, int);
     47 
     48 struct wb_acpi_softc {
     49 	struct wb_softc sc_wb;
     50 	isa_chipset_tag_t sc_ic;
     51 	void *sc_ih;
     52 	int sc_ioh_length;
     53 };
     54 
     55 CFATTACH_DECL_NEW(wb_acpi, sizeof(struct wb_acpi_softc),
     56     wb_acpi_match,
     57     wb_acpi_attach,
     58     wb_acpi_detach,
     59     NULL
     60 );
     61 
     62 static const char * const wb_acpi_ids[] = {
     63 #if notyet
     64 	"WEC0515",	/* Memory Stick interface */
     65 #endif
     66 	"WEC0517",	/* SD Memory Card interface */
     67 	NULL
     68 };
     69 
     70 static int
     71 wb_acpi_match(device_t parent, cfdata_t match, void *opaque)
     72 {
     73 	struct acpi_attach_args *aa = opaque;
     74 
     75 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     76 		return 0;
     77 
     78 	return acpi_match_hid(aa->aa_node->ad_devinfo, wb_acpi_ids);
     79 }
     80 
     81 static void
     82 wb_acpi_attach(device_t parent, device_t self, void *opaque)
     83 {
     84 	struct wb_acpi_softc *sc = device_private(self);
     85 	struct acpi_attach_args *aa = opaque;
     86 	struct acpi_resources res;
     87 	struct acpi_io *io;
     88 	struct acpi_irq *irq;
     89 	bus_space_handle_t ioh;
     90 	ACPI_STATUS rv;
     91 
     92 	sc->sc_ic = aa->aa_ic;
     93 
     94 	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
     95 	    &res, &acpi_resource_parse_ops_default);
     96 	if (ACPI_FAILURE(rv))
     97 		return;
     98 
     99 	io = acpi_res_io(&res, 0);
    100 	irq = acpi_res_irq(&res, 0);
    101 	if (io == NULL || irq == NULL) {
    102 		aprint_error_dev(self, "incomplete resources\n");
    103 		goto cleanup;
    104 	}
    105 
    106 	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0, &ioh)) {
    107 		aprint_error_dev(self, "couldn't map registers\n");
    108 		goto cleanup;
    109 	}
    110 	sc->sc_ioh_length = io->ar_length;
    111 
    112 	sc->sc_ih = isa_intr_establish(sc->sc_ic, irq->ar_irq,
    113 	    (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
    114 	    IPL_SDMMC, wb_intr, &sc->sc_wb);
    115 	if (sc->sc_ih == NULL) {
    116 		aprint_error_dev(self,
    117 		    "couldn't establish interrupt handler\n");
    118 		goto cleanup;
    119 	}
    120 
    121 	sc->sc_wb.wb_dev = self;
    122 	sc->sc_wb.wb_type = WB_DEVNO_SD;
    123 	sc->sc_wb.wb_iot = aa->aa_iot;
    124 	sc->sc_wb.wb_ioh = ioh;
    125 	sc->sc_wb.wb_irq = irq->ar_irq;
    126 	sc->sc_wb.wb_base = io->ar_base;
    127 	wb_attach(&sc->sc_wb);
    128 
    129 cleanup:
    130 	acpi_resource_cleanup(&res);
    131 }
    132 
    133 static int
    134 wb_acpi_detach(device_t self, int flags)
    135 {
    136 	struct wb_acpi_softc *sc = device_private(self);
    137 	int rv;
    138 
    139 	rv = wb_detach(&sc->sc_wb, flags);
    140 	if (rv)
    141 		return rv;
    142 
    143 	if (sc->sc_ih)
    144 		isa_intr_disestablish(sc->sc_ic, sc->sc_ih);
    145 
    146 	if (sc->sc_ioh_length > 0)
    147 		bus_space_unmap(sc->sc_wb.wb_iot, sc->sc_wb.wb_ioh,
    148 		    sc->sc_ioh_length);
    149 
    150 	return 0;
    151 }
    152