5532b9f61e
*that* whilst we ponder the best way to decide how to register dwlpx interrupts with TLSB.
334 lines
8.2 KiB
C
334 lines
8.2 KiB
C
/* $FreeBSD$ */
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/*
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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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* 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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*
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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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struct tlsb_device *tlsb_primary_cpu = NULL;
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#define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
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struct tlsb_softc {
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driver_intr_t * zsc_intr;
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void * zsc_arg;
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driver_intr_t * sub_intr;
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device_t tlsb_dev;
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int tlsb_map;
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};
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static void tlsb_add_child(struct tlsb_softc *, struct tlsb_device *);
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static char *tlsb_node_type_str(u_int32_t);
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static void tlsb_intr(void *, u_long);
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static struct tlsb_softc * tlsb0_softc = NULL;
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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);
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static int tlsb_print_child(device_t, device_t);
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static int tlsb_read_ivar(device_t, device_t, int, u_long *);
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static int tlsb_setup_intr(device_t, device_t, struct resource *, int,
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driver_intr_t *, void *, void **);
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static int
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tlsb_teardown_intr(device_t, device_t, struct resource *, void *);
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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", tlsb_methods, 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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int node;
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device_set_desc(dev, "TurboLaser Backplane Bus");
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sc->tlsb_dev = dev;
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tlsb0_softc = sc;
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set_iointr(tlsb_intr);
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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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for (node = 0; node <= TLSB_NODE_MAX; ++node) {
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/*
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* Check for invalid address.
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*/
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#ifdef SIMOS
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if (node != 0 && node != 8) {
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continue;
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} else if (node == 0) {
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tldev = TLDEV_DTYPE_SCPU4;
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} else {
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tldev = TLDEV_DTYPE_KFTIA;
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}
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#else
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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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#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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tdev = (struct tlsb_device *)
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malloc(sizeof (struct tlsb_device), M_DEVBUF, M_NOWAIT);
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if (!tdev) {
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printf("tlsb_probe: unable to malloc softc\n");
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continue;
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}
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sc->tlsb_map |= (1 << node);
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tdev->td_node = node;
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tdev->td_tldev = tldev;
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tlsb_add_child(sc, tdev);
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}
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return (0);
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}
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static int
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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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int retval = 0;
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retval += bus_print_child_header(dev, child);
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retval += printf(" at %s node %d\n",
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device_get_nameunit(dev), tdev->td_node);
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return (retval);
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}
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static int
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tlsb_read_ivar(device_t dev, device_t child, 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 = TLDEV_DTYPE(tdev->td_tldev);
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break;
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case TLSB_IVAR_SWREV:
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*result = TLDEV_SWREV(tdev->td_tldev);
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break;
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case TLSB_IVAR_HWREV:
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*result = TLDEV_HWREV(tdev->td_tldev);
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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, struct resource *i, int f,
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driver_intr_t *intr, void *arg, void **c)
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{
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if (strncmp(device_get_name(child), "zsc", 3) == 0) {
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if (tlsb0_softc->zsc_intr)
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return (EBUSY);
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tlsb0_softc->zsc_intr = intr;
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tlsb0_softc->zsc_arg = arg;
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return (0);
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} else if (strncmp(device_get_name(device_get_parent(child)), "kft", 3)
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== 0) {
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if (tlsb0_softc->sub_intr == NULL)
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tlsb0_softc->sub_intr = intr;
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return (0);
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} else {
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return (ENXIO);
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}
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}
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static int
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tlsb_teardown_intr(device_t dev, device_t child, struct resource *i, void *c)
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{
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if (strncmp(device_get_name(child), "zsc", 3) == 0) {
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tlsb0_softc->zsc_intr = NULL;
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return (0);
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} else if (strncmp(device_get_name(device_get_parent(child)), "kft", 3)
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== 0) {
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tlsb0_softc->sub_intr = NULL;
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return (0);
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} else {
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return (ENXIO);
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}
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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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if (vector && tlsb0_softc->sub_intr)
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(*tlsb0_softc->sub_intr)((void *)vector);
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}
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static void
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tlsb_add_child(struct tlsb_softc *tlsb, struct tlsb_device *tdev)
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{
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static int kftproto, memproto, cpuproto;
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u_int32_t dtype = tdev->td_tldev & TLDEV_DTYPE_MASK;
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int i, unit, ordr, units = 1;
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char *dn;
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device_t cd;
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/*
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* We want CPU and Memory boards to configure first, and we want the
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* I/O boards to configure in reverse slot number order. This is
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* further complicated by the possibility of dual CPU nodes.
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*/
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ordr = tdev->td_node << 1;
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switch (dtype) {
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case TLDEV_DTYPE_KFTHA:
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case TLDEV_DTYPE_KFTIA:
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ordr = 16 + (TLSB_NODE_MAX - tdev->td_node);
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dn = "kft";
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unit = kftproto++;
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break;
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case TLDEV_DTYPE_MS7CC:
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dn = "tlsbmem";
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unit = memproto++;
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break;
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case TLDEV_DTYPE_SCPU4:
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case TLDEV_DTYPE_SCPU16:
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dn = "tlsbcpu";
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unit = cpuproto++;
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break;
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case TLDEV_DTYPE_DCPU4:
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case TLDEV_DTYPE_DCPU16:
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units = 2;
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dn = "tlsbcpu";
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unit = cpuproto;
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cpuproto += 2;
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break;
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default:
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printf("tlsb_add_child: unknown TLSB node type 0x%x\n", dtype);
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return;
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}
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for (i = 0; i < units; i++, unit++) {
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cd = device_add_child_ordered(tlsb->tlsb_dev, ordr, dn, unit);
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if (cd == NULL) {
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return;
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}
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device_set_ivars(cd, tdev);
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device_set_desc(cd, tlsb_node_type_str(dtype));
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}
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}
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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 tmp[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(tmp, sizeof(tmp));
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snprintf(tmp, sizeof(tmp), "unknown, type 0x%x", dtype);
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return (tmp);
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}
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/* NOTREACHED */
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}
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DRIVER_MODULE(tlsb, root, tlsb_driver, tlsb_devclass, 0, 0);
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