351 lines
8.8 KiB
C
351 lines
8.8 KiB
C
/* $Id */
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/* $NetBSD: tlsb.c,v 1.10 1998/05/14 00:01:32 thorpej Exp $ */
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/*
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* Copyright (c) 1997 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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* Based in part upon a prototype version by Jason Thorpe
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* Copyright (c) 1996 by Jason 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 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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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* Autoconfiguration and support routines for the TurboLaser System Bus
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* found on AlphaServer 8200 and 8400 systems.
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*/
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#include "opt_simos.h"
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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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/* #include "locators.h" */
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extern int cputype;
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#define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
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/*
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* The structure used to attach devices to the TurboLaser.
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*/
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struct tlsb_device {
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int td_node; /* node number */
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u_int16_t td_dtype; /* device type */
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u_int8_t td_swrev; /* software revision */
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u_int8_t td_hwrev; /* hardware revision */
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};
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#define DEVTOTLSB(dev) ((struct tlsb_device*) device_get_ivars(dev))
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struct intr_mapping {
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STAILQ_ENTRY(intr_mapping) queue;
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driver_intr_t* intr;
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void* arg;
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};
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struct tlsb_softc {
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STAILQ_HEAD(, intr_mapping) intr_handlers;
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};
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static char *tlsb_node_type_str(u_int32_t);
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static void tlsb_intr(void* frame, u_long vector);
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/* There can be only one. */
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static int tlsb_found;
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static struct tlsb_softc* tlsb0_softc;
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static devclass_t tlsb_devclass;
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/*
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* Device methods
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*/
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static int tlsb_probe(device_t dev);
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static void tlsb_print_child(device_t dev, device_t child);
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static int tlsb_read_ivar(device_t dev, device_t child, int which, u_long* result);
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static int tlsb_setup_intr(device_t dev, device_t child,
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struct resource *irq, int flags,
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driver_intr_t *intr, void *arg, void **cookiep);
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static int tlsb_teardown_intr(device_t dev, device_t child,
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struct resource *irq, void *cookie);
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static device_method_t tlsb_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, tlsb_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, tlsb_print_child),
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DEVMETHOD(bus_read_ivar, tlsb_read_ivar),
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DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
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DEVMETHOD(bus_setup_intr, tlsb_setup_intr),
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DEVMETHOD(bus_teardown_intr, tlsb_teardown_intr),
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{ 0, 0 }
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};
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static driver_t tlsb_driver = {
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"tlsb",
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tlsb_methods,
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sizeof(struct tlsb_softc),
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};
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/*
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* At 'probe' time, we add all the devices which we know about to the
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* bus. The generic attach routine will probe and attach them if they
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* are alive.
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*/
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static int
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tlsb_probe(device_t dev)
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{
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struct tlsb_softc* sc = device_get_softc(dev);
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struct tlsb_device *tdev;
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u_int32_t tldev;
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u_int8_t vid;
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int node;
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device_t child;
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device_set_desc(dev, "TurboLaser bus");
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STAILQ_INIT(&sc->intr_handlers);
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tlsb0_softc = sc;
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set_iointr(tlsb_intr);
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printf("Probing for devices on the TurboLaser bus:\n");
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tlsb_found = 1;
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/*
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* Attempt to find all devices on the bus, including
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* CPUs, memory modules, and I/O modules.
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*/
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/*
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* Sigh. I would like to just start off nicely,
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* but I need to treat I/O modules differently-
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* The highest priority I/O node has to be in
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* node #8, and I want to find it *first*, since
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* it will have the primary disks (most likely)
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* on it.
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*/
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/*
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* XXX dfr: I don't see why I need to do this
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*/
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for (node = 0; node <= TLSB_NODE_MAX; ++node) {
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/*
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* Check for invalid address. This may not really
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* be necessary, but what the heck...
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*/
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if (badaddr(TLSB_NODE_REG_ADDR(node, TLDEV), sizeof(u_int32_t)))
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continue;
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tldev = TLSB_GET_NODEREG(node, TLDEV);
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#ifdef SIMOS
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if (node != 0 && node != 8)
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continue;
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#endif
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if (tldev == 0) {
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/* Nothing at this node. */
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continue;
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}
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#if 0
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if (TLDEV_ISIOPORT(tldev))
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continue; /* not interested right now */
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#endif
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tdev = (struct tlsb_device*)
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malloc(sizeof(struct tlsb_device),
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M_DEVBUF, M_NOWAIT);
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if (!tdev)
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continue;
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tdev->td_node = node;
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#ifdef SIMOS
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if (node == 0)
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tdev->td_dtype = TLDEV_DTYPE_SCPU4;
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else if (node == 8)
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tdev->td_dtype = TLDEV_DTYPE_KFTIA;
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#else
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tdev->td_dtype = TLDEV_DTYPE(tldev);
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#endif
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tdev->td_swrev = TLDEV_SWREV(tldev);
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tdev->td_hwrev = TLDEV_HWREV(tldev);
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child = device_add_child(dev, NULL, -1, tdev);
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device_set_desc(child, tlsb_node_type_str(tdev->td_dtype));
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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(tldev)) {
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printf("%s%d node %d: %s",
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device_get_name(dev), device_get_unit(dev),
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node, tlsb_node_type_str(tldev));
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/*
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* Hook in the first CPU unit.
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*/
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vid = (TLSB_GET_NODEREG(node, TLVID) &
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TLVID_VIDA_MASK) >> TLVID_VIDA_SHIFT;
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printf(", VID %d\n", vid);
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TLSB_PUT_NODEREG(node, TLCPUMASK, (1<<vid));
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}
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}
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return 0;
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}
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static void
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tlsb_print_child(device_t dev, device_t child)
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{
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struct tlsb_device* tdev = DEVTOTLSB(child);
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printf(" at %s%d node %d",
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device_get_name(dev),
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device_get_unit(dev),
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tdev->td_node);
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}
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static int
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tlsb_read_ivar(device_t dev, device_t child,
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int index, u_long* result)
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{
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struct tlsb_device* tdev = DEVTOTLSB(child);
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switch (index) {
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case TLSB_IVAR_NODE:
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*result = tdev->td_node;
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break;
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case TLSB_IVAR_DTYPE:
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*result = tdev->td_dtype;
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break;
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case TLSB_IVAR_SWREV:
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*result = tdev->td_swrev;
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break;
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case TLSB_IVAR_HWREV:
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*result = tdev->td_hwrev;
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break;
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}
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return ENOENT;
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}
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static int
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tlsb_setup_intr(device_t dev, device_t child,
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struct resource *irq, int flags,
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driver_intr_t *intr, void *arg, void **cookiep)
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{
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struct tlsb_softc* sc = device_get_softc(dev);
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struct intr_mapping* i;
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i = malloc(sizeof(struct intr_mapping), M_DEVBUF, M_NOWAIT);
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if (!i)
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return ENOMEM;
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i->intr = intr;
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i->arg = arg;
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STAILQ_INSERT_TAIL(&sc->intr_handlers, i, queue);
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*cookiep = i;
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return 0;
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}
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static int
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tlsb_teardown_intr(device_t dev, device_t child,
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struct resource *irq, void *cookie)
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{
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struct tlsb_softc* sc = device_get_softc(dev);
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struct intr_mapping* i = cookie;
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STAILQ_REMOVE(&sc->intr_handlers, i, intr_mapping, queue);
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free(i, M_DEVBUF);
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return 0;
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}
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static void
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tlsb_intr(void* frame, u_long vector)
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{
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struct tlsb_softc* sc = tlsb0_softc;
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struct intr_mapping* i;
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/*
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* XXX for SimOS, broadcast the interrupt. A real implementation
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* will decode the vector to extract node and host etc.
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*/
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for (i = STAILQ_FIRST(&sc->intr_handlers);
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i; i = STAILQ_NEXT(i, queue))
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i->intr(i->arg);
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}
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DRIVER_MODULE(tlsb, root, tlsb_driver, tlsb_devclass, 0, 0);
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static char *
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tlsb_node_type_str(u_int32_t dtype)
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{
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static char tlsb_line[64];
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switch (dtype & TLDEV_DTYPE_MASK) {
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case TLDEV_DTYPE_KFTHA:
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return ("KFTHA I/O interface");
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case TLDEV_DTYPE_KFTIA:
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return ("KFTIA I/O interface");
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case TLDEV_DTYPE_MS7CC:
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return ("MS7CC Memory Module");
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case TLDEV_DTYPE_SCPU4:
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return ("Single CPU, 4MB cache");
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case TLDEV_DTYPE_SCPU16:
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return ("Single CPU, 16MB cache");
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case TLDEV_DTYPE_DCPU4:
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return ("Dual CPU, 4MB cache");
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case TLDEV_DTYPE_DCPU16:
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return ("Dual CPU, 16MB cache");
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default:
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bzero(tlsb_line, sizeof(tlsb_line));
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snprintf(tlsb_line, sizeof(tlsb_line),
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"unknown, dtype 0x%x", dtype);
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return (tlsb_line);
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}
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/* NOTREACHED */
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}
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