FreeBSD-5.3/sys/alpha/tlsb/tlsb.c
/*
* Copyright (c) 1997, 2000 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.
*
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/alpha/tlsb/tlsb.c,v 1.16 2003/08/17 06:42:08 marcel Exp $");
#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/cpuconf.h>
#include <machine/md_var.h>
#include <machine/rpb.h>
#include <alpha/tlsb/tlsbreg.h>
#include <alpha/tlsb/tlsbvar.h>
struct tlsb_device *tlsb_primary_cpu = NULL;
#define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
struct tlsb_softc {
driver_intr_t * zsc_intr;
void * zsc_arg;
driver_intr_t * sub_intr;
device_t tlsb_dev;
int tlsb_map;
};
static void tlsb_add_child(struct tlsb_softc *, struct tlsb_device *);
static char *tlsb_node_type_str(u_int32_t);
static void tlsb_intr(void *, u_long);
static struct tlsb_softc * tlsb0_softc = NULL;
static devclass_t tlsb_devclass;
/*
* Device methods
*/
static int tlsb_probe(device_t);
static int tlsb_print_child(device_t, device_t);
static int tlsb_read_ivar(device_t, device_t, int, u_long *);
static int tlsb_setup_intr(device_t, device_t, struct resource *, int,
driver_intr_t *, void *, void **);
static int
tlsb_teardown_intr(device_t, device_t, struct resource *, void *);
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_setup_intr, tlsb_setup_intr),
DEVMETHOD(bus_teardown_intr, tlsb_teardown_intr),
{ 0, 0 }
};
static driver_t tlsb_driver = {
"tlsb", tlsb_methods, 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;
int node;
device_set_desc(dev, "TurboLaser Backplane Bus");
sc->tlsb_dev = dev;
tlsb0_softc = sc;
set_iointr(tlsb_intr);
/*
* Attempt to find all devices on the bus, including
* CPUs, memory modules, and I/O modules.
*/
for (node = 0; node <= TLSB_NODE_MAX; ++node) {
/*
* Check for invalid address.
*/
if (badaddr(TLSB_NODE_REG_ADDR(node, TLDEV), sizeof(u_int32_t)))
continue;
tldev = TLSB_GET_NODEREG(node, TLDEV);
if (tldev == 0) {
/* Nothing at this node. */
continue;
}
tdev = (struct tlsb_device *)
malloc(sizeof (struct tlsb_device), M_DEVBUF, M_NOWAIT);
if (!tdev) {
printf("tlsb_probe: unable to malloc softc\n");
continue;
}
sc->tlsb_map |= (1 << node);
tdev->td_node = node;
tdev->td_tldev = tldev;
tlsb_add_child(sc, tdev);
}
return (0);
}
static int
tlsb_print_child(device_t dev, device_t child)
{
struct tlsb_device* tdev = DEVTOTLSB(child);
int retval = 0;
retval += bus_print_child_header(dev, child);
retval += printf(" at %s node %d\n",
device_get_nameunit(dev), tdev->td_node);
return (retval);
}
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 = TLDEV_DTYPE(tdev->td_tldev);
break;
case TLSB_IVAR_SWREV:
*result = TLDEV_SWREV(tdev->td_tldev);
break;
case TLSB_IVAR_HWREV:
*result = TLDEV_HWREV(tdev->td_tldev);
break;
}
return (ENOENT);
}
static int
tlsb_setup_intr(device_t dev, device_t child, struct resource *i, int f,
driver_intr_t *intr, void *arg, void **c)
{
if (strncmp(device_get_name(child), "zsc", 3) == 0) {
if (tlsb0_softc->zsc_intr)
return (EBUSY);
tlsb0_softc->zsc_intr = intr;
tlsb0_softc->zsc_arg = arg;
return (0);
} else if (strncmp(device_get_name(device_get_parent(child)), "kft", 3)
== 0) {
if (tlsb0_softc->sub_intr == NULL)
tlsb0_softc->sub_intr = intr;
return (0);
} else {
return (ENXIO);
}
}
static int
tlsb_teardown_intr(device_t dev, device_t child, struct resource *i, void *c)
{
if (strncmp(device_get_name(child), "zsc", 3) == 0) {
tlsb0_softc->zsc_intr = NULL;
return (0);
} else if (strncmp(device_get_name(device_get_parent(child)), "kft", 3)
== 0) {
tlsb0_softc->sub_intr = NULL;
return (0);
} else {
return (ENXIO);
}
}
static void
tlsb_intr(void *frame, u_long vector)
{
if (vector && tlsb0_softc->sub_intr)
(*tlsb0_softc->sub_intr)((void *)vector);
}
static void
tlsb_add_child(struct tlsb_softc *tlsb, struct tlsb_device *tdev)
{
static int kftproto, memproto, cpuproto;
u_int32_t dtype = tdev->td_tldev & TLDEV_DTYPE_MASK;
int i, unit, ordr, units = 1;
char *dn;
device_t cd;
/*
* We want CPU and Memory boards to configure first, and we want the
* I/O boards to configure in reverse slot number order. This is
* further complicated by the possibility of dual CPU nodes.
*/
ordr = tdev->td_node << 1;
switch (dtype) {
case TLDEV_DTYPE_KFTHA:
case TLDEV_DTYPE_KFTIA:
ordr = 16 + (TLSB_NODE_MAX - tdev->td_node);
dn = "kft";
unit = kftproto++;
break;
case TLDEV_DTYPE_MS7CC:
dn = "tlsbmem";
unit = memproto++;
break;
case TLDEV_DTYPE_SCPU4:
case TLDEV_DTYPE_SCPU16:
dn = "tlsbcpu";
unit = cpuproto++;
break;
case TLDEV_DTYPE_DCPU4:
case TLDEV_DTYPE_DCPU16:
units = 2;
dn = "tlsbcpu";
unit = cpuproto;
cpuproto += 2;
break;
default:
printf("tlsb_add_child: unknown TLSB node type 0x%x\n", dtype);
return;
}
for (i = 0; i < units; i++, unit++) {
cd = device_add_child_ordered(tlsb->tlsb_dev, ordr, dn, unit);
if (cd == NULL) {
return;
}
device_set_ivars(cd, tdev);
device_set_desc(cd, tlsb_node_type_str(dtype));
}
}
static char *
tlsb_node_type_str(u_int32_t dtype)
{
static char tmp[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(tmp, sizeof(tmp));
snprintf(tmp, sizeof(tmp), "unknown, type 0x%x", dtype);
return (tmp);
}
/* NOTREACHED */
}
DRIVER_MODULE(tlsb, root, tlsb_driver, tlsb_devclass, 0, 0);