FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/viapm.c

     /*      $NetBSD: viapm.c,v 1.9 2003/01/01 00:10:23 thorpej Exp $        */
     
     /*
      * Copyright (c) 2000 Johan Danielsson
      * 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. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * 3. Neither the name of author nor the names of any contributors may
     *    be used to endorse or promote products derived from this
     *    software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
     * ``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 FOUNDATION OR CONTRIBUTORS
     * 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.
     */
    
    /*
     * frontend for the power management device in the VIA VT82C686a South
     * Bridge. It (the chip) has three functions, power management, hardware
     * monitoring, and an SMBus controller. A driver for the hardware monitoring
     * is provided by the viaenv driver
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: viapm.c,v 1.9 2003/01/01 00:10:23 thorpej Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/device.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcidevs.h>
    
    #include <dev/pci/viapmvar.h>
    
    struct viapm_softc {
            struct device sc_dev;
    
            pci_chipset_tag_t sc_pc;
            pcitag_t sc_tag;
            bus_space_tag_t sc_iot;
    };
    
    static int
    viapm_match(struct device * parent, struct cfdata * match, void *aux)
    {
            struct pci_attach_args *pa = aux;
    
            if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH &&
                PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VIATECH_VT82C686A_SMB)
                    return 1;
            return 0;
    }
    
    static const char *
    viapm_device_name(enum vapm_devtype type)
    {
    
            switch (type) {
            case VIAPM_POWER:
                    return "power management";
            case VIAPM_HWMON:
                    return "hardware monitor";
            case VIAPM_SMBUS:
                    return "SMBus controller";
            default:
                    panic("viapm_device_name: unknown type");
            }
    }
    
    static int
    viapm_print(void *aux, const char *pnp)
    {
            struct viapm_attach_args *vaa = aux;
    
            if (pnp)
                    aprint_normal("%s at %s", viapm_device_name(vaa->va_type), pnp);
            return UNCONF;
    }
   
   static int
   viapm_submatch(struct device * parent, struct cfdata * cf, void *aux)
   {
   
           return config_match(parent, cf, aux);
   }
   
   static void
   viapm_attach(struct device * parent, struct device * self, void *aux)
   {
           struct viapm_softc *sc = (struct viapm_softc *) self;
           struct pci_attach_args *pa = aux;
           struct viapm_attach_args vaa;
   
           printf("\n");
   
           sc->sc_pc = pa->pa_pc;
           sc->sc_tag = pa->pa_tag;
           sc->sc_iot = pa->pa_iot;
   
           vaa.va_pc = sc->sc_pc;
           vaa.va_tag = sc->sc_tag;
           vaa.va_iot = sc->sc_iot;
   
   #if 0
           /*
            * no point in confusing people with these until there are drivers for
            * them
            */
           vaa.va_type = VIAPM_POWER;
           vaa.va_offset = 0x40;
           config_found_sm(self, &vaa, viapm_print, viapm_submatch);
   #endif
   
           vaa.va_type = VIAPM_HWMON;
           vaa.va_offset = 0x70;
           config_found_sm(self, &vaa, viapm_print, viapm_submatch);
   
   #if 0
           vaa.va_type = VIAPM_SMBUS;
           vaa.va_offset = 0x93;
           config_found_sm(self, &vaa, viapm_print, viapm_submatch);
   #endif
   }
   
   CFATTACH_DECL(viapm, sizeof(struct viapm_softc),
       viapm_match, viapm_attach, NULL, NULL);

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