150 lines
5.1 KiB
C
150 lines
5.1 KiB
C
/* $NetBSD: geode.c,v 1.15 2011/07/01 17:37:26 dyoung Exp $ */
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/*-
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* Copyright (c) 2005 David Young. All rights reserved.
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*
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* This code was written by David Young and merged with geodecntr code
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* by Frank Kardel.
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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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* 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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* 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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* THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID
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* YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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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* 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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* 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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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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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* Device driver for the special devices attached to the GBA (watchdog, high
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* resolution counter, ...) in the AMD Geode SC1100 processor.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: geode.c,v 1.15 2011/07/01 17:37:26 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/wdog.h>
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#include <uvm/uvm_extern.h>
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#include <sys/bus.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <arch/i386/pci/geodevar.h>
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#include <arch/i386/pci/geodereg.h>
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#include <dev/sysmon/sysmonvar.h>
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#ifdef GEODE_DEBUG
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#define GEODE_DPRINTF(__x) printf __x
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#else /* GEODE_DEBUG */
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#define GEODE_DPRINTF(__x) /* nothing */
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#endif
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static int
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geode_gcb_match(device_t parent, cfdata_t 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_NS &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NS_SC1100_XBUS)
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return (10); /* XXX beat pchb? -dyoung */
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return (0);
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}
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static void
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geode_gcb_attach(device_t parent, device_t self, void *aux)
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{
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struct geode_gcb_softc *sc = device_private(self);
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struct pci_attach_args *pa = aux;
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uint32_t cba;
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u_int rev;
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cba = pci_conf_read(pa->pa_pc, pa->pa_tag, SC1100_XBUS_CBA_SCRATCHPAD);
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sc->sc_iot = pa->pa_iot;
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if (bus_space_map(sc->sc_iot, (bus_addr_t)cba, SC1100_GCB_SIZE, 0,
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&sc->sc_ioh) != 0) {
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aprint_error(": unable to map registers\n");
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return;
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}
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GEODE_DPRINTF(("%s: mapped %u bytes at %#08" PRIx32 "\n",
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device_xname(self), SC1100_GCB_SIZE, cba));
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rev = bus_space_read_1(sc->sc_iot, sc->sc_ioh, SC1100_GCB_REV_B);
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aprint_naive("\n");
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aprint_normal(": AMD Geode GCB (rev. 0x%02x)\n", rev);
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while (config_found(self, NULL, NULL) != NULL)
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/* empty */;
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}
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static int
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geode_gcb_detach(device_t self, int flags)
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{
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int rc;
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struct geode_gcb_softc *sc = device_private(self);
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if ((rc = config_detach_children(self, flags)) != 0)
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return rc;
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, SC1100_GCB_SIZE);
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return 0;
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}
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static void
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geode_gcb_childdetached(device_t parent, device_t child)
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{
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/* We hold no references to child devices, so there is nothing
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* to do.
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*/
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}
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CFATTACH_DECL2_NEW(geodegcb, sizeof(struct geode_gcb_softc),
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geode_gcb_match, geode_gcb_attach, geode_gcb_detach, NULL, NULL,
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geode_gcb_childdetached);
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