294 lines
7.4 KiB
C
294 lines
7.4 KiB
C
/*
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* Copyright (c) 2017 Stormshield.
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* Copyright (c) 2017 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_platform.h"
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/socket.h>
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#include <sys/taskqueue.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/tcp_lro.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include "if_mvnetareg.h"
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#include "if_mvnetavar.h"
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#ifdef MVNETA_DEBUG
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#define STATIC /* nothing */
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#else
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#define STATIC static
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#endif
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#define PHY_MODE_MAXLEN 10
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#define INBAND_STATUS_MAXLEN 16
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static int mvneta_fdt_probe(device_t);
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static int mvneta_fdt_attach(device_t);
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STATIC boolean_t mvneta_find_ethernet_prop_switch(phandle_t, phandle_t);
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static device_method_t mvneta_fdt_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, mvneta_fdt_probe),
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DEVMETHOD(device_attach, mvneta_fdt_attach),
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/* End */
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(mvneta, mvneta_fdt_driver, mvneta_fdt_methods,
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sizeof(struct mvneta_softc), mvneta_driver);
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DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, 0, 0);
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DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, 0, 0);
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static int mvneta_fdt_phy_acquire(device_t);
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static struct ofw_compat_data compat_data[] = {
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{"marvell,armada-370-neta", true},
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{"marvell,armada-3700-neta", true},
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{NULL, false}
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};
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SIMPLEBUS_PNP_INFO(compat_data);
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static int
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mvneta_fdt_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
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return (ENXIO);
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device_set_desc(dev, "NETA controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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mvneta_fdt_attach(device_t dev)
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{
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struct mvneta_softc *sc;
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uint32_t tx_csum_limit;
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int err;
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sc = device_get_softc(dev);
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/* Try to fetch PHY information from FDT */
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err = mvneta_fdt_phy_acquire(dev);
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if (err != 0)
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return (err);
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if (ofw_bus_is_compatible(dev, "marvell,armada-370-neta")) {
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tx_csum_limit = MVNETA_A370_MAX_CSUM_MTU;
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} else {
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tx_csum_limit = MVNETA_A3700_MAX_CSUM_MTU;
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}
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if (ofw_bus_has_prop(dev, "tx-csum-limit")) {
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err = OF_getencprop(ofw_bus_get_node(dev), "tx-csum-limit",
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&tx_csum_limit, sizeof(tx_csum_limit));
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if (err <= 0) {
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device_printf(dev,
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"Failed to acquire tx-csum-limit property\n");
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return (ENXIO);
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}
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}
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sc->tx_csum_limit = tx_csum_limit;
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return (mvneta_attach(dev));
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}
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static int
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mvneta_fdt_phy_acquire(device_t dev)
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{
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struct mvneta_softc *sc;
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phandle_t node, child, phy_handle;
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char phymode[PHY_MODE_MAXLEN];
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char managed[INBAND_STATUS_MAXLEN];
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char *name;
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sc = device_get_softc(dev);
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node = ofw_bus_get_node(dev);
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/* PHY mode is crucial */
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if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) {
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device_printf(dev, "Failed to acquire PHY mode from FDT.\n");
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return (ENXIO);
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}
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if (strncmp(phymode, "rgmii-id", 8) == 0)
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sc->phy_mode = MVNETA_PHY_RGMII_ID;
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else if (strncmp(phymode, "rgmii", 5) == 0)
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sc->phy_mode = MVNETA_PHY_RGMII;
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else if (strncmp(phymode, "sgmii", 5) == 0)
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sc->phy_mode = MVNETA_PHY_SGMII;
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else if (strncmp(phymode, "qsgmii", 6) == 0)
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sc->phy_mode = MVNETA_PHY_QSGMII;
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else
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sc->phy_mode = MVNETA_PHY_SGMII;
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/* Check if in-band link status will be used */
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if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) {
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if (strncmp(managed, "in-band-status", 14) == 0) {
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sc->use_inband_status = TRUE;
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device_printf(dev, "Use in-band link status.\n");
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return (0);
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}
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}
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if (OF_getencprop(node, "phy", (void *)&phy_handle,
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sizeof(phy_handle)) <= 0) {
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/* Test for fixed-link (present i.e. in 388-gp) */
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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if (OF_getprop_alloc(child,
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"name", (void **)&name) <= 0) {
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continue;
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}
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if (strncmp(name, "fixed-link", 10) == 0) {
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free(name, M_OFWPROP);
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if (OF_getencprop(child, "speed",
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&sc->phy_speed, sizeof(sc->phy_speed)) <= 0) {
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if (bootverbose) {
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device_printf(dev,
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"No PHY information.\n");
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}
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return (ENXIO);
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}
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if (OF_hasprop(child, "full-duplex"))
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sc->phy_fdx = TRUE;
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else
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sc->phy_fdx = FALSE;
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/* Keep this flag just for the record */
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sc->phy_addr = MII_PHY_ANY;
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return (0);
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}
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free(name, M_OFWPROP);
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}
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if (bootverbose) {
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device_printf(dev,
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"Could not find PHY information in FDT.\n");
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}
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return (ENXIO);
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} else {
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phy_handle = OF_instance_to_package(phy_handle);
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if (OF_getencprop(phy_handle, "reg", &sc->phy_addr,
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sizeof(sc->phy_addr)) <= 0) {
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device_printf(dev,
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"Could not find PHY address in FDT.\n");
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return (ENXIO);
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}
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}
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return (0);
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}
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int
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mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr)
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{
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phandle_t node;
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uint8_t lmac[ETHER_ADDR_LEN];
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uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0};
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int len;
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/*
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* Retrieve hw address from the device tree.
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*/
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node = ofw_bus_get_node(sc->dev);
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if (node == 0)
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return (ENXIO);
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len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac));
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if (len != ETHER_ADDR_LEN)
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return (ENOENT);
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if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) {
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/* Invalid MAC address (all zeros) */
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return (EINVAL);
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}
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memcpy(addr, lmac, ETHER_ADDR_LEN);
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return (0);
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}
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STATIC boolean_t
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mvneta_find_ethernet_prop_switch(phandle_t ethernet, phandle_t node)
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{
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boolean_t ret;
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phandle_t child, switch_eth_handle, switch_eth;
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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if (OF_getencprop(child, "ethernet", (void*)&switch_eth_handle,
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sizeof(switch_eth_handle)) > 0) {
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if (switch_eth_handle > 0) {
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switch_eth = OF_node_from_xref(
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switch_eth_handle);
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if (switch_eth == ethernet)
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return (true);
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}
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}
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ret = mvneta_find_ethernet_prop_switch(ethernet, child);
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if (ret != 0)
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return (ret);
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}
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return (false);
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}
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boolean_t
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mvneta_has_switch_fdt(device_t self)
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{
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phandle_t node;
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node = ofw_bus_get_node(self);
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return mvneta_find_ethernet_prop_switch(node, OF_finddevice("/"));
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}
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