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/*
* Copyright (c) 1997, 2000 by Matthew Jacob
* NASA AMES Research Center.
* 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 immediately at the beginning of the file, without modification,
* 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.
*
* 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 AUTHOR 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.
*/
/*
* Node for TLSB CPU Modules found on
* AlphaServer 8200 and 8400 systems.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/rpb.h>
#include <machine/cpuconf.h>
#include <alpha/tlsb/tlsbreg.h>
#include <alpha/tlsb/tlsbvar.h>
#define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
/*
* Device methods
*/
static int tlsbcpu_probe(device_t);
static device_method_t tlsbcpu_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, tlsbcpu_probe),
DEVMETHOD(device_attach, bus_generic_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, bus_generic_read_ivar),
DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
{ 0, 0 }
};
static devclass_t tlsbcpu_devclass;
static driver_t tlsbcpu_driver = {
"tlsbcpu", tlsbcpu_methods, 1
};
static int
tlsbcpu_probe(device_t dev)
{
u_int32_t vid;
device_t child;
static int inst = 0;
struct tlsb_device *tdev = DEVTOTLSB(dev);
/*
* Deal with hooking CPU instances to TurboLaser nodes.
*/
if (!TLDEV_ISCPU(tdev->td_tldev)) {
return (-1);
}
vid = TLSB_GET_NODEREG(tdev->td_node, TLVID) & TLVID_VIDA_MASK;
vid >>= TLVID_VIDA_SHIFT;
/*
* If this is the primary CPU (unit 0 for us), then
* attach a gbus. Otherwise don't. This is bogus,
* but sufficent for now.
*/
if (device_get_unit(dev) != 0) {
return (0);
}
/*
* Hook in the first CPU unit.
*/
if (device_get_unit(dev) == 0) {
tlsb_primary_cpu = tdev;
}
/*
* Make this CPU a candidate for receiving interrupts.
*/
TLSB_PUT_NODEREG(tdev->td_node, TLCPUMASK,
TLSB_GET_NODEREG(tdev->td_node, TLCPUMASK) | (1 << vid));
/*
* Attach gbus for first instance.
*/
if (device_get_unit(dev) == 0) {
child = device_add_child(dev, "gbus", inst++);
if (child == NULL) {
return (-1);
}
device_set_ivars(child, tdev);
}
return (0);
}
DRIVER_MODULE(tlsbcpu, tlsb, tlsbcpu_driver, tlsbcpu_devclass, 0, 0);
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