231 lines
6.7 KiB
C
231 lines
6.7 KiB
C
/*-
|
|
* Copyright (c) 2008 Marius Strobl <marius@FreeBSD.org>
|
|
* 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, 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
|
|
#if 1
|
|
#include <sparc64/pci/ofw_pci.h>
|
|
#endif
|
|
|
|
#define JBUSPPM_NREG 2
|
|
|
|
#define JBUSPPM_DEVID 0
|
|
#define JBUSPPM_ESTAR 1
|
|
|
|
#define JBUSPPM_DEVID_JID 0x00
|
|
#define JBUSPPM_DEVID_JID_MASTER 0x00040000
|
|
|
|
#define JBUSPPM_ESTAR_CTRL 0x00
|
|
#define JBUSPPM_ESTAR_CTRL_1 0x00000001
|
|
#define JBUSPPM_ESTAR_CTRL_2 0x00000002
|
|
#define JBUSPPM_ESTAR_CTRL_32 0x00000020
|
|
#define JBUSPPM_ESTAR_CTRL_MASK \
|
|
(JBUSPPM_ESTAR_CTRL_1 | JBUSPPM_ESTAR_CTRL_2 | JBUSPPM_ESTAR_CTRL_32)
|
|
#define JBUSPPM_ESTAR_JCHNG 0x08
|
|
#define JBUSPPM_ESTAR_JCHNG_DELAY_MASK 0x00000007
|
|
#define JBUSPPM_ESTAR_JCHNG_START 0x00000010
|
|
#define JBUSPPM_ESTAR_JCHNG_OCCURED 0x00000018
|
|
|
|
struct jbusppm_softc {
|
|
struct resource *sc_res[JBUSPPM_NREG];
|
|
bus_space_tag_t sc_bt[JBUSPPM_NREG];
|
|
bus_space_handle_t sc_bh[JBUSPPM_NREG];
|
|
};
|
|
|
|
#define JBUSPPM_READ(sc, reg, off) \
|
|
bus_space_read_8((sc)->sc_bt[(reg)], (sc)->sc_bh[(reg)], (off))
|
|
#define JBUSPPM_WRITE(sc, reg, off, val) \
|
|
bus_space_write_8((sc)->sc_bt[(reg)], (sc)->sc_bh[(reg)], (off), (val))
|
|
|
|
static device_probe_t jbusppm_probe;
|
|
static device_attach_t jbusppm_attach;
|
|
|
|
static device_method_t jbusppm_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, jbusppm_probe),
|
|
DEVMETHOD(device_attach, jbusppm_attach),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static devclass_t jbusppm_devclass;
|
|
|
|
DEFINE_CLASS_0(jbusppm, jbusppm_driver, jbusppm_methods,
|
|
sizeof(struct jbusppm_softc));
|
|
DRIVER_MODULE(jbusppm, nexus, jbusppm_driver, jbusppm_devclass, 0, 0);
|
|
|
|
static int
|
|
jbusppm_probe(device_t dev)
|
|
{
|
|
const char* compat;
|
|
|
|
compat = ofw_bus_get_compat(dev);
|
|
if (compat != NULL && strcmp(ofw_bus_get_name(dev), "ppm") == 0 &&
|
|
strcmp(compat, "jbus-ppm") == 0) {
|
|
device_set_desc(dev, "JBus power management");
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
jbusppm_attach(device_t dev)
|
|
{
|
|
struct jbusppm_softc *sc;
|
|
int i, rid;
|
|
#if 1
|
|
device_t *children, tomatillo;
|
|
u_long tcount, tstart, jcount, jstart;
|
|
int j, nchildren;
|
|
#endif
|
|
|
|
sc = device_get_softc(dev);
|
|
for (i = JBUSPPM_DEVID; i <= JBUSPPM_ESTAR; i++) {
|
|
rid = i;
|
|
/*
|
|
* The JBUSPPM_ESTAR resources is shared with that of the
|
|
* Tomatillo bus A controller configuration register bank.
|
|
*/
|
|
#if 0
|
|
sc->sc_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
|
|
&rid, (i == JBUSPPM_ESTAR ? RF_SHAREABLE : 0) | RF_ACTIVE);
|
|
if (sc->sc_res[i] == NULL) {
|
|
device_printf(dev,
|
|
"could not allocate resource %d\n", i);
|
|
goto fail;
|
|
}
|
|
sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]);
|
|
sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]);
|
|
#else
|
|
/*
|
|
* Workaround for the fact that rman(9) only allows to
|
|
* share resources of the same size.
|
|
*/
|
|
if (i == JBUSPPM_ESTAR) {
|
|
if (bus_get_resource(dev, SYS_RES_MEMORY, i, &jstart,
|
|
&jcount) != 0) {
|
|
device_printf(dev,
|
|
"could not determine Estar resource\n");
|
|
goto fail;
|
|
}
|
|
if (device_get_children(device_get_parent(dev),
|
|
&children, &nchildren) != 0) {
|
|
device_printf(dev, "could not get children\n");
|
|
goto fail;
|
|
}
|
|
tomatillo = NULL;
|
|
for (j = 0; j < nchildren; j++) {
|
|
if (ofw_bus_get_type(children[j]) != NULL &&
|
|
strcmp(ofw_bus_get_type(children[j]),
|
|
OFW_TYPE_PCI) == 0 &&
|
|
ofw_bus_get_compat(children[j]) != NULL &&
|
|
strcmp(ofw_bus_get_compat(children[j]),
|
|
"pci108e,a801") == 0 &&
|
|
((bus_get_resource_start(children[j],
|
|
SYS_RES_MEMORY, 0) >> 20) & 1) == 0) {
|
|
tomatillo = children[j];
|
|
break;
|
|
}
|
|
}
|
|
free(children, M_TEMP);
|
|
if (tomatillo == NULL) {
|
|
device_printf(dev,
|
|
"could not find Tomatillo\n");
|
|
goto fail;
|
|
}
|
|
if (bus_get_resource(tomatillo, SYS_RES_MEMORY, 1,
|
|
&tstart, &tcount) != 0) {
|
|
device_printf(dev,
|
|
"could not determine Tomatillo "
|
|
"resource\n");
|
|
goto fail;
|
|
}
|
|
sc->sc_res[i] = bus_alloc_resource(dev, SYS_RES_MEMORY,
|
|
&rid, tstart, tstart + tcount - 1, tcount,
|
|
RF_SHAREABLE | RF_ACTIVE);
|
|
} else
|
|
sc->sc_res[i] = bus_alloc_resource_any(dev,
|
|
SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
|
if (sc->sc_res[i] == NULL) {
|
|
device_printf(dev,
|
|
"could not allocate resource %d\n", i);
|
|
goto fail;
|
|
}
|
|
sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]);
|
|
sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]);
|
|
if (i == JBUSPPM_ESTAR)
|
|
bus_space_subregion(sc->sc_bt[i], sc->sc_bh[i],
|
|
jstart - tstart, jcount, &sc->sc_bh[i]);
|
|
#endif
|
|
}
|
|
|
|
if (bootverbose) {
|
|
if ((JBUSPPM_READ(sc, JBUSPPM_DEVID, JBUSPPM_DEVID_JID) &
|
|
JBUSPPM_DEVID_JID_MASTER) != 0)
|
|
device_printf(dev, "master I/O bridge\n");
|
|
device_printf(dev, "running at ");
|
|
switch (JBUSPPM_READ(sc, JBUSPPM_ESTAR, JBUSPPM_ESTAR_CTRL) &
|
|
JBUSPPM_ESTAR_CTRL_MASK) {
|
|
case JBUSPPM_ESTAR_CTRL_1:
|
|
printf("full");
|
|
break;
|
|
case JBUSPPM_ESTAR_CTRL_2:
|
|
printf("half");
|
|
break;
|
|
case JBUSPPM_ESTAR_CTRL_32:
|
|
printf("1/32");
|
|
break;
|
|
default:
|
|
printf("unknown");
|
|
break;
|
|
}
|
|
printf(" speed\n");
|
|
}
|
|
|
|
return (0);
|
|
|
|
fail:
|
|
for (i = JBUSPPM_DEVID; i <= JBUSPPM_ESTAR && sc->sc_res[i] != NULL;
|
|
i++)
|
|
bus_release_resource(dev, SYS_RES_MEMORY,
|
|
rman_get_rid(sc->sc_res[i]), sc->sc_res[i]);
|
|
return (ENXIO);
|
|
}
|