148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
/* $NetBSD: viapm.c,v 1.9 2003/01/01 00:10:23 thorpej Exp $ */
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/*
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* Copyright (c) 2000 Johan Danielsson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of author nor the names of any contributors may
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* be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* frontend for the power management device in the VIA VT82C686a South
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* Bridge. It (the chip) has three functions, power management, hardware
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* monitoring, and an SMBus controller. A driver for the hardware monitoring
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* is provided by the viaenv driver
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: viapm.c,v 1.9 2003/01/01 00:10:23 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/pci/viapmvar.h>
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struct viapm_softc {
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struct device sc_dev;
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pci_chipset_tag_t sc_pc;
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pcitag_t sc_tag;
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bus_space_tag_t sc_iot;
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};
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static int
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viapm_match(struct device * parent, struct cfdata * match, void *aux)
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{
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struct pci_attach_args *pa = aux;
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VIATECH_VT82C686A_SMB)
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return 1;
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return 0;
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}
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static const char *
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viapm_device_name(enum vapm_devtype type)
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{
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switch (type) {
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case VIAPM_POWER:
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return "power management";
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case VIAPM_HWMON:
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return "hardware monitor";
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case VIAPM_SMBUS:
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return "SMBus controller";
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default:
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panic("viapm_device_name: unknown type");
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}
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}
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static int
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viapm_print(void *aux, const char *pnp)
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{
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struct viapm_attach_args *vaa = aux;
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if (pnp)
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aprint_normal("%s at %s", viapm_device_name(vaa->va_type), pnp);
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return UNCONF;
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}
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static int
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viapm_submatch(struct device * parent, struct cfdata * cf, void *aux)
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{
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return config_match(parent, cf, aux);
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}
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static void
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viapm_attach(struct device * parent, struct device * self, void *aux)
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{
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struct viapm_softc *sc = (struct viapm_softc *) self;
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struct pci_attach_args *pa = aux;
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struct viapm_attach_args vaa;
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printf("\n");
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sc->sc_pc = pa->pa_pc;
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sc->sc_tag = pa->pa_tag;
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sc->sc_iot = pa->pa_iot;
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vaa.va_pc = sc->sc_pc;
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vaa.va_tag = sc->sc_tag;
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vaa.va_iot = sc->sc_iot;
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#if 0
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/*
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* no point in confusing people with these until there are drivers for
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* them
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*/
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vaa.va_type = VIAPM_POWER;
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vaa.va_offset = 0x40;
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config_found_sm(self, &vaa, viapm_print, viapm_submatch);
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#endif
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vaa.va_type = VIAPM_HWMON;
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vaa.va_offset = 0x70;
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config_found_sm(self, &vaa, viapm_print, viapm_submatch);
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#if 0
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vaa.va_type = VIAPM_SMBUS;
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vaa.va_offset = 0x93;
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config_found_sm(self, &vaa, viapm_print, viapm_submatch);
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#endif
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}
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CFATTACH_DECL(viapm, sizeof(struct viapm_softc),
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viapm_match, viapm_attach, NULL, NULL);
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