freebsd-skq/sys/alpha/tlsb/tlsb.c

332 lines
8.2 KiB
C
Raw Normal View History

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