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sys/dev/dpaa2/dpaa2_mc_fdt.c

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright © 2021-2022 Dmitry Salychev
* Copyright © 2022 Bjoern A. Zeeb
*
* 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("$FreeBSD$");
/*
* The DPAA2 Management Complex (MC) Bus Driver (FDT-based).
*
* MC is a hardware resource manager which can be found in several NXP
* SoCs (LX2160A, for example) and provides an access to the specialized
* hardware objects used in network-oriented packet processing applications.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/fdt/simplebus.h>
#include "pcib_if.h"
#include "pci_if.h"
#include "ofw_bus_if.h"
#include "dpaa2_mcp.h"
#include "dpaa2_mc.h"
#include "dpaa2_mc_if.h"
struct dpaa2_mac_fdt_softc {
uint32_t reg;
phandle_t sfp;
phandle_t pcs_handle;
phandle_t phy_handle;
char managed[64];
char phy_conn_type[64];
};
#if 0
ethernet@1 {
compatible = "fsl,qoriq-mc-dpmac";
reg = <0x1>;
sfp = <0x14>;
pcs-handle = <0x15>;
phy-connection-type = "10gbase-r";
managed = "in-band-status";
};
ethernet@3 {
compatible = "fsl,qoriq-mc-dpmac";
reg = <0x3>;
phy-handle = <0x18>;
phy-connection-type = "qsgmii";
managed = "in-band-status";
pcs-handle = <0x19>;
};
#endif
static int
dpaa2_mac_dev_probe(device_t dev)
{
phandle_t node;
uint64_t reg;
ssize_t s;
node = ofw_bus_get_node(dev);
if (!ofw_bus_node_is_compatible(node, "fsl,qoriq-mc-dpmac")) {
device_printf(dev, "'%s' not fsl,qoriq-mc-dpmac compatible\n",
ofw_bus_get_name(dev));
return (ENXIO);
}
s = device_get_property(dev, "reg", &reg, sizeof(reg),
DEVICE_PROP_UINT32);
if (s == -1) {
device_printf(dev, "%s: '%s' has no 'reg' property, s %zd\n",
__func__, ofw_bus_get_name(dev), s);
return (ENXIO);
}
device_set_desc(dev, "DPAA2 MAC DEV");
return (BUS_PROBE_DEFAULT);
}
static int
dpaa2_mac_fdt_attach(device_t dev)
{
struct dpaa2_mac_fdt_softc *sc;
phandle_t node;
ssize_t s;
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
s = device_get_property(dev, "reg", &sc->reg, sizeof(sc->reg),
DEVICE_PROP_UINT32);
if (s == -1) {
device_printf(dev, "Cannot find 'reg' property: %zd\n", s);
return (ENXIO);
}
s = device_get_property(dev, "managed", sc->managed,
sizeof(sc->managed), DEVICE_PROP_ANY);
s = device_get_property(dev, "phy-connection-type", sc->phy_conn_type,
sizeof(sc->phy_conn_type), DEVICE_PROP_ANY);
s = device_get_property(dev, "pcs-handle", &sc->pcs_handle,
sizeof(sc->pcs_handle), DEVICE_PROP_HANDLE);
/* 'sfp' and 'phy-handle' are optional but we need one or the other. */
s = device_get_property(dev, "sfp", &sc->sfp, sizeof(sc->sfp),
DEVICE_PROP_HANDLE);
s = device_get_property(dev, "phy-handle", &sc->phy_handle,
sizeof(sc->phy_handle), DEVICE_PROP_HANDLE);
if (bootverbose)
device_printf(dev, "node %#x '%s': reg %#x sfp %#x pcs-handle "
"%#x phy-handle %#x managed '%s' phy-conn-type '%s'\n",
node, ofw_bus_get_name(dev),
sc->reg, sc->sfp, sc->pcs_handle, sc->phy_handle,
sc->managed, sc->phy_conn_type);
return (0);
}
static bool
dpaa2_mac_fdt_match_id(device_t dev, uint32_t id)
{
struct dpaa2_mac_fdt_softc *sc;
if (dev == NULL)
return (false);
sc = device_get_softc(dev);
if (sc->reg == id)
return (true);
return (false);
}
static device_t
dpaa2_mac_fdt_get_phy_dev(device_t dev)
{
struct dpaa2_mac_fdt_softc *sc;
if (dev == NULL)
return (NULL);
sc = device_get_softc(dev);
if (sc->phy_handle == 0 && sc->sfp == 0)
return (NULL);
#ifdef __not_yet__ /* No sff,sfp support yet. */
if (sc->sfp != 0) {
device_t xdev;
xdev = OF_device_from_xref(OF_xref_from_node(sc->sfp));
if (xdev != NULL)
return (xdev);
}
#endif
return (OF_device_from_xref(OF_xref_from_node(sc->phy_handle)));
}
static device_method_t dpaa2_mac_fdt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dpaa2_mac_dev_probe),
DEVMETHOD(device_attach, dpaa2_mac_fdt_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD_END
};
DEFINE_CLASS_0(dpaa2_mac_fdt, dpaa2_mac_fdt_driver, dpaa2_mac_fdt_methods,
sizeof(struct dpaa2_mac_fdt_softc));
DRIVER_MODULE(dpaa2_mac_fdt, dpaa2_mc, dpaa2_mac_fdt_driver, 0, 0);
MODULE_DEPEND(dpaa2_mac_fdt, memac_mdio_fdt, 1, 1, 1);
/*
* Device interface.
*/
static int
dpaa2_mc_fdt_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "fsl,qoriq-mc"))
return (ENXIO);
device_set_desc(dev, "DPAA2 Management Complex");
return (BUS_PROBE_DEFAULT);
}
static int
dpaa2_mc_fdt_probe_child(device_t bus, phandle_t child)
{
device_t childdev;
/* make sure we do not aliready have a device. */
childdev = ofw_bus_find_child_device_by_phandle(bus, child);
if (childdev != NULL)
return (0);
childdev = simplebus_add_device(bus, child, 0, "dpaa2_mac_fdt", -1,
NULL);
if (childdev == NULL)
return (ENXIO);
return (device_probe_and_attach(childdev));
}
static int
dpaa2_mc_fdt_attach(device_t dev)
{
struct dpaa2_mc_softc *sc;
phandle_t node;
phandle_t child;
sc = device_get_softc(dev);
sc->acpi_based = false;
sc->ofw_node = ofw_bus_get_node(dev);
bus_generic_probe(dev);
bus_enumerate_hinted_children(dev);
bus_generic_probe(dev);
bus_enumerate_hinted_children(dev);
/*
* Attach the children represented in the device tree.
*/
/* fsl-mc -> dpamcs */
node = OF_child(sc->ofw_node);
simplebus_init(dev, node);
/* Attach the dpmac children represented in the device tree. */
child = ofw_bus_find_compatible(node, "fsl,qoriq-mc-dpmac");
for (; child > 0; child = OF_peer(child)) {
if (!ofw_bus_node_is_compatible(child, "fsl,qoriq-mc-dpmac"))
continue;
if (!OF_hasprop(child, "reg"))
continue;
if (!OF_hasprop(child, "pcs-handle"))
continue;
if (dpaa2_mc_fdt_probe_child(dev, child) != 0)
continue;
}
return (dpaa2_mc_attach(dev));
}
/*
* FDT compat layer.
*/
static device_t
dpaa2_mc_fdt_find_dpaa2_mac_dev(device_t dev, uint32_t id)
{
int devcount, error, i, len;
device_t *devlist, mdev;
const char *mdevname;
error = device_get_children(dev, &devlist, &devcount);
if (error != 0)
return (NULL);
for (i = 0; i < devcount; i++) {
mdev = devlist[i];
mdevname = device_get_name(mdev);
if (mdevname == NULL)
continue;
len = strlen(mdevname);
if (strncmp("dpaa2_mac_fdt", mdevname, len) != 0)
continue;
if (!device_is_attached(mdev))
continue;
if (dpaa2_mac_fdt_match_id(mdev, id))
return (mdev);
}
return (NULL);
}
static int
dpaa2_mc_fdt_get_phy_dev(device_t dev, device_t *phy_dev, uint32_t id)
{
device_t mdev, pdev;
mdev = dpaa2_mc_fdt_find_dpaa2_mac_dev(dev, id);
if (mdev == NULL) {
device_printf(dev, "%s: error finding dpmac device with id=%u\n",
__func__, id);
return (ENXIO);
}
pdev = dpaa2_mac_fdt_get_phy_dev(mdev);
if (pdev == NULL) {
device_printf(dev, "%s: error getting MDIO device for dpamc %s "
"(id=%u)\n", __func__, device_get_nameunit(mdev), id);
return (ENXIO);
}
if (phy_dev != NULL)
*phy_dev = pdev;
if (bootverbose)
device_printf(dev, "dpmac_id %u mdev %p (%s) pdev %p (%s)\n",
id, mdev, device_get_nameunit(mdev),
pdev, device_get_nameunit(pdev));
return (0);
}
static const struct ofw_bus_devinfo *
dpaa2_mc_simplebus_get_devinfo(device_t bus, device_t child)
{
return (OFW_BUS_GET_DEVINFO(device_get_parent(bus), child));
}
static device_method_t dpaa2_mc_fdt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dpaa2_mc_fdt_probe),
DEVMETHOD(device_attach, dpaa2_mc_fdt_attach),
DEVMETHOD(device_detach, dpaa2_mc_detach),
/* Bus interface */
DEVMETHOD(bus_alloc_resource, dpaa2_mc_alloc_resource),
DEVMETHOD(bus_adjust_resource, dpaa2_mc_adjust_resource),
DEVMETHOD(bus_release_resource, dpaa2_mc_release_resource),
DEVMETHOD(bus_activate_resource, dpaa2_mc_activate_resource),
DEVMETHOD(bus_deactivate_resource, dpaa2_mc_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* Pseudo-PCIB interface */
DEVMETHOD(pcib_alloc_msi, dpaa2_mc_alloc_msi),
DEVMETHOD(pcib_release_msi, dpaa2_mc_release_msi),
DEVMETHOD(pcib_map_msi, dpaa2_mc_map_msi),
DEVMETHOD(pcib_get_id, dpaa2_mc_get_id),
/* DPAA2 MC bus interface */
DEVMETHOD(dpaa2_mc_manage_dev, dpaa2_mc_manage_dev),
DEVMETHOD(dpaa2_mc_get_free_dev,dpaa2_mc_get_free_dev),
DEVMETHOD(dpaa2_mc_get_dev, dpaa2_mc_get_dev),
DEVMETHOD(dpaa2_mc_get_shared_dev, dpaa2_mc_get_shared_dev),
DEVMETHOD(dpaa2_mc_reserve_dev, dpaa2_mc_reserve_dev),
DEVMETHOD(dpaa2_mc_release_dev, dpaa2_mc_release_dev),
DEVMETHOD(dpaa2_mc_get_phy_dev, dpaa2_mc_fdt_get_phy_dev),
/* OFW/simplebus */
DEVMETHOD(ofw_bus_get_devinfo, dpaa2_mc_simplebus_get_devinfo),
DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
DEVMETHOD_END
};
DEFINE_CLASS_1(dpaa2_mc, dpaa2_mc_fdt_driver, dpaa2_mc_fdt_methods,
sizeof(struct dpaa2_mc_softc), dpaa2_mc_driver);
DRIVER_MODULE(dpaa2_mc, simplebus, dpaa2_mc_fdt_driver, 0, 0);