freebsd-skq/sys/dev/neta/if_mvneta_fdt.c

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/*
* Copyright (c) 2017 Stormshield.
* Copyright (c) 2017 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 ``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 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 "opt_platform.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/taskqueue.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp_lro.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include "if_mvnetareg.h"
#include "if_mvnetavar.h"
#define PHY_MODE_MAXLEN 10
#define INBAND_STATUS_MAXLEN 16
static int mvneta_fdt_probe(device_t);
static int mvneta_fdt_attach(device_t);
static device_method_t mvneta_fdt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mvneta_fdt_probe),
DEVMETHOD(device_attach, mvneta_fdt_attach),
/* End */
DEVMETHOD_END
};
DEFINE_CLASS_1(mvneta, mvneta_fdt_driver, mvneta_fdt_methods,
sizeof(struct mvneta_softc), mvneta_driver);
static devclass_t mvneta_fdt_devclass;
DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0);
DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0);
static int mvneta_fdt_phy_acquire(device_t);
static struct ofw_compat_data compat_data[] = {
{"marvell,armada-370-neta", true},
{"marvell,armada-3700-neta", true},
{NULL, false}
};
static int
mvneta_fdt_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
return (ENXIO);
device_set_desc(dev, "NETA controller");
return (BUS_PROBE_DEFAULT);
}
static int
mvneta_fdt_attach(device_t dev)
{
int err;
/* Try to fetch PHY information from FDT */
err = mvneta_fdt_phy_acquire(dev);
if (err != 0)
return (err);
return (mvneta_attach(dev));
}
static int
mvneta_fdt_phy_acquire(device_t dev)
{
struct mvneta_softc *sc;
phandle_t node, child, phy_handle;
char phymode[PHY_MODE_MAXLEN];
char managed[INBAND_STATUS_MAXLEN];
char *name;
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
/* PHY mode is crucial */
if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) {
device_printf(dev, "Failed to acquire PHY mode from FDT.\n");
return (ENXIO);
}
if (strncmp(phymode, "rgmii-id", 8) == 0)
sc->phy_mode = MVNETA_PHY_RGMII_ID;
else if (strncmp(phymode, "rgmii", 5) == 0)
sc->phy_mode = MVNETA_PHY_RGMII;
else if (strncmp(phymode, "sgmii", 5) == 0)
sc->phy_mode = MVNETA_PHY_SGMII;
else if (strncmp(phymode, "qsgmii", 6) == 0)
sc->phy_mode = MVNETA_PHY_QSGMII;
else
sc->phy_mode = MVNETA_PHY_SGMII;
/* Check if in-band link status will be used */
if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) {
if (strncmp(managed, "in-band-status", 14) == 0) {
sc->use_inband_status = TRUE;
device_printf(dev, "Use in-band link status.\n");
return (0);
}
}
if (OF_getencprop(node, "phy", (void *)&phy_handle,
sizeof(phy_handle)) <= 0) {
/* Test for fixed-link (present i.e. in 388-gp) */
for (child = OF_child(node); child != 0; child = OF_peer(child)) {
if (OF_getprop_alloc(child,
"name", 1, (void **)&name) <= 0) {
continue;
}
if (strncmp(name, "fixed-link", 10) == 0) {
free(name, M_OFWPROP);
if (OF_getencprop(child, "speed",
&sc->phy_speed, sizeof(sc->phy_speed)) <= 0) {
if (bootverbose) {
device_printf(dev,
"No PHY information.\n");
}
return (ENXIO);
}
if (OF_hasprop(child, "full-duplex"))
sc->phy_fdx = TRUE;
else
sc->phy_fdx = FALSE;
/* Keep this flag just for the record */
sc->phy_addr = MII_PHY_ANY;
return (0);
}
free(name, M_OFWPROP);
}
if (bootverbose) {
device_printf(dev,
"Could not find PHY information in FDT.\n");
}
return (ENXIO);
} else {
phy_handle = OF_instance_to_package(phy_handle);
if (OF_getencprop(phy_handle, "reg", &sc->phy_addr,
sizeof(sc->phy_addr)) <= 0) {
device_printf(dev,
"Could not find PHY address in FDT.\n");
return (ENXIO);
}
}
return (0);
}
int
mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr)
{
phandle_t node;
uint8_t lmac[ETHER_ADDR_LEN];
uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0};
int len;
/*
* Retrieve hw address from the device tree.
*/
node = ofw_bus_get_node(sc->dev);
if (node == 0)
return (ENXIO);
len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac));
if (len != ETHER_ADDR_LEN)
return (ENOENT);
if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) {
/* Invalid MAC address (all zeros) */
return (EINVAL);
}
memcpy(addr, lmac, ETHER_ADDR_LEN);
return (0);
}