FreeBSD/Linux Kernel Cross Reference
sys/dev/acpi/com_acpi.c

     /* $NetBSD: com_acpi.c,v 1.12 2003/11/03 18:25:56 mycroft Exp $ */
     
     /*
      * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: com_acpi.c,v 1.12 2003/11/03 18:25:56 mycroft Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/errno.h>
    #include <sys/ioctl.h>
    #include <sys/syslog.h>
    #include <sys/device.h>
    #include <sys/proc.h>
    #include <sys/termios.h>
    
    #include <machine/bus.h>
    
    #include <dev/isa/isavar.h>
    #include <dev/isa/isadmavar.h>
    
    #include <dev/acpi/acpica.h>
    #include <dev/acpi/acpireg.h>
    #include <dev/acpi/acpivar.h>
    
    #include <dev/ic/comvar.h>
    
    int     com_acpi_match(struct device *, struct cfdata *, void *);
    void    com_acpi_attach(struct device *, struct device *, void *);
    
    struct com_acpi_softc {
            struct com_softc sc_com;
            void *sc_ih;
    };
    
    CFATTACH_DECL(com_acpi, sizeof(struct com_acpi_softc), com_acpi_match,
        com_acpi_attach, NULL, NULL);
    
    /*
     * Supported device IDs
     */
    
    static const char * const com_acpi_ids[] = {
            "PNP0500",      /* Standard PC COM port */
            "PNP0501",      /* 16550A-compatible COM port */
            "PNP0510",      /* Generic IRDA-compatible device */
            "PNP0511",      /* Generic IRDA-compatible device */
            "IBM0071",      /* IBM ThinkPad IRDA device */
            "SMCF010",      /* SMC SuperIO IRDA device */
            NULL
    };
    
    /*
     * com_acpi_match: autoconf(9) match routine
     */
    int
    com_acpi_match(struct device *parent, struct cfdata *match, void *aux)
    {
            struct acpi_attach_args *aa = aux;
    
            if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
                    return 0;
    
            return acpi_match_hid(aa->aa_node->ad_devinfo,com_acpi_ids);
    }
    
    /*
     * com_acpi_attach: autoconf(9) attach routine
     */
    void
    com_acpi_attach(struct device *parent, struct device *self, void *aux)
    {
            struct com_acpi_softc *asc = (struct com_acpi_softc *)self;
            struct com_softc *sc = &asc->sc_com;
            struct acpi_attach_args *aa = aux;
            struct acpi_resources res;
           struct acpi_io *io;
           struct acpi_irq *irq;
           ACPI_STATUS rv;
   
           printf("\n");
   
           /* parse resources */
           rv = acpi_resource_parse(&sc->sc_dev, aa->aa_node, &res,
               &acpi_resource_parse_ops_default);
           if (ACPI_FAILURE(rv))
                   return;
   
           /* find our i/o registers */
           io = acpi_res_io(&res, 0);
           if (io == NULL) {
                   printf("%s: unable to find i/o register resource\n",
                       sc->sc_dev.dv_xname);
                   return;
           }
   
           /* find our IRQ */
           irq = acpi_res_irq(&res, 0);
           if (irq == NULL) {
                   printf("%s: unable to find irq resource\n",
                       sc->sc_dev.dv_xname);
                   return;
           }
   
           sc->sc_iot = aa->aa_iot;
           if (!com_is_console(aa->aa_iot, io->ar_base, &sc->sc_ioh)) {
                   if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
                       0, &sc->sc_ioh)) {
                           printf("%s: can't map i/o space\n",
                               sc->sc_dev.dv_xname);
                           return;
                   }
           }
           sc->sc_iobase = io->ar_base;
   
           printf("%s", sc->sc_dev.dv_xname);
   
           if (comprobe1(sc->sc_iot, sc->sc_ioh) == 0) {
                   printf(": com probe failed\n");
                   return;
           }
   
           sc->sc_frequency = 115200 * 16;
   
           com_attach_subr(sc);
   
           asc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq,
               (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
               IPL_SERIAL, comintr, sc);
   }

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