131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/*
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* Copyright (c) 1997, 2000 by Matthew Jacob
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* NASA AMES Research Center.
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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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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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 OF
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* SUCH DAMAGE.
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*/
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/*
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* Node for TLSB CPU Modules found on
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* AlphaServer 8200 and 8400 systems.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/module.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <machine/rpb.h>
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#include <machine/cpuconf.h>
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#include <alpha/tlsb/tlsbreg.h>
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#include <alpha/tlsb/tlsbvar.h>
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#define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
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/*
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* Device methods
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*/
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static int tlsbcpu_probe(device_t);
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static device_method_t tlsbcpu_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, tlsbcpu_probe),
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DEVMETHOD(device_attach, bus_generic_attach),
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DEVMETHOD(device_detach, bus_generic_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_read_ivar, bus_generic_read_ivar),
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DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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{ 0, 0 }
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};
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static devclass_t tlsbcpu_devclass;
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static driver_t tlsbcpu_driver = {
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"tlsbcpu", tlsbcpu_methods, 1
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};
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static int
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tlsbcpu_probe(device_t dev)
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{
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u_int32_t vid;
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device_t child;
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static int inst = 0;
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struct tlsb_device *tdev = DEVTOTLSB(dev);
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/*
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* Deal with hooking CPU instances to TurboLaser nodes.
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*/
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if (!TLDEV_ISCPU(tdev->td_tldev)) {
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return (-1);
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}
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vid = TLSB_GET_NODEREG(tdev->td_node, TLVID) & TLVID_VIDA_MASK;
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vid >>= TLVID_VIDA_SHIFT;
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/*
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* If this is the primary CPU (unit 0 for us), then
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* attach a gbus. Otherwise don't. This is bogus,
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* but sufficent for now.
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*/
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if (device_get_unit(dev) != 0) {
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return (0);
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}
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/*
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* Hook in the first CPU unit.
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*/
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if (device_get_unit(dev) == 0) {
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tlsb_primary_cpu = tdev;
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}
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/*
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* Make this CPU a candidate for receiving interrupts.
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*/
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TLSB_PUT_NODEREG(tdev->td_node, TLCPUMASK,
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TLSB_GET_NODEREG(tdev->td_node, TLCPUMASK) | (1 << vid));
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/*
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* Attach gbus for first instance.
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*/
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if (device_get_unit(dev) == 0) {
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child = device_add_child(dev, "gbus", inst++);
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if (child == NULL) {
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return (-1);
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}
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device_set_ivars(child, tdev);
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}
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return (0);
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}
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DRIVER_MODULE(tlsbcpu, tlsb, tlsbcpu_driver, tlsbcpu_devclass, 0, 0);
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