47cabd046d
Instead replace it with a different hack, that turns fman into a simplebus subclass, and maps its children within its address space. Since all PHY communication is done through dtsec0's mdio space, the FDT contains a reference to the dtsec0 mdio handle in all nodes that need it. Instead of using Freescale's implementation for MII access, use our own (copied loosely from the eTSEC driver, and could possibly be merged eventually). This lets us access the registers directly rather than needing a full dtsec interface just to access the registers. Future directions will include turning fman into more of a simplebus, and not mapping the region and playing games. This will require changes to the dtsec driver to make it a child of fman, and possibly other drivers as well.
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/*-
|
|
* Copyright (c) 2012 Semihalf.
|
|
* 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/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/module.h>
|
|
|
|
#include <dev/fdt/simplebus.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include <contrib/ncsw/inc/ncsw_ext.h>
|
|
#include <contrib/ncsw/inc/enet_ext.h>
|
|
|
|
#include "fman.h"
|
|
|
|
#define FFMAN_DEVSTR "Freescale Frame Manager"
|
|
|
|
static int fman_fdt_probe(device_t dev);
|
|
|
|
static device_method_t fman_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, fman_fdt_probe),
|
|
DEVMETHOD(device_attach, fman_attach),
|
|
DEVMETHOD(device_detach, fman_detach),
|
|
|
|
DEVMETHOD(device_shutdown, fman_shutdown),
|
|
DEVMETHOD(device_suspend, fman_suspend),
|
|
DEVMETHOD(device_resume, fman_resume),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
DEFINE_CLASS_1(fman, fman_driver, fman_methods,
|
|
sizeof(struct fman_softc), simplebus_driver);
|
|
static devclass_t fman_devclass;
|
|
EARLY_DRIVER_MODULE(fman, simplebus, fman_driver, fman_devclass, 0, 0,
|
|
BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
|
|
|
|
|
|
static int
|
|
fman_fdt_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_is_compatible(dev, "fsl,fman"))
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, FFMAN_DEVSTR);
|
|
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
uint32_t
|
|
fman_get_clock(struct fman_softc *sc)
|
|
{
|
|
device_t dev;
|
|
phandle_t node;
|
|
pcell_t fman_clock;
|
|
|
|
dev = sc->sc_base.dev;
|
|
node = ofw_bus_get_node(dev);
|
|
|
|
if ((OF_getprop(node, "clock-frequency", &fman_clock,
|
|
sizeof(fman_clock)) <= 0) || (fman_clock == 0)) {
|
|
device_printf(dev, "could not acquire correct frequency "
|
|
"from DTS\n");
|
|
|
|
return (0);
|
|
}
|
|
|
|
return ((uint32_t)fman_clock);
|
|
}
|
|
|