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393 lines
10 KiB
C
393 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright © 2021-2022 Dmitry Salychev
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* Copyright © 2021 Bjoern A. Zeeb
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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/*
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* The DPAA2 Management Complex (MC) Bus Driver (ACPI-based).
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*
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* MC is a hardware resource manager which can be found in several NXP
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* SoCs (LX2160A, for example) and provides an access to the specialized
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* hardware objects used in network-oriented packet processing applications.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include "acpi_bus_if.h"
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#include "pcib_if.h"
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#include "pci_if.h"
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#include "dpaa2_mcp.h"
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#include "dpaa2_mc.h"
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#include "dpaa2_mc_if.h"
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struct dpaa2_mac_dev_softc {
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int uid;
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uint64_t reg;
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char managed[64];
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char phy_conn_type[64];
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char phy_mode[64];
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ACPI_HANDLE phy_channel;
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};
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static int
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dpaa2_mac_dev_probe(device_t dev)
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{
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uint64_t reg;
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ssize_t s;
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s = device_get_property(dev, "reg", ®, sizeof(reg),
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DEVICE_PROP_UINT64);
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if (s == -1)
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return (ENXIO);
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device_set_desc(dev, "DPAA2 MAC DEV");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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dpaa2_mac_dev_attach(device_t dev)
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{
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struct dpaa2_mac_dev_softc *sc;
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ACPI_HANDLE h;
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ssize_t s;
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sc = device_get_softc(dev);
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h = acpi_get_handle(dev);
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if (h == NULL)
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return (ENXIO);
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s = acpi_GetInteger(h, "_UID", &sc->uid);
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if (ACPI_FAILURE(s)) {
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device_printf(dev, "Cannot find '_UID' property: %zd\n", s);
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return (ENXIO);
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}
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s = device_get_property(dev, "reg", &sc->reg, sizeof(sc->reg),
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DEVICE_PROP_UINT64);
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if (s == -1) {
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device_printf(dev, "Cannot find 'reg' property: %zd\n", s);
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return (ENXIO);
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}
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s = device_get_property(dev, "managed", sc->managed,
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sizeof(sc->managed), DEVICE_PROP_ANY);
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s = device_get_property(dev, "phy-connection-type", sc->phy_conn_type,
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sizeof(sc->phy_conn_type), DEVICE_PROP_ANY);
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s = device_get_property(dev, "phy-mode", sc->phy_mode,
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sizeof(sc->phy_mode), DEVICE_PROP_ANY);
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s = device_get_property(dev, "phy-handle", &sc->phy_channel,
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sizeof(sc->phy_channel), DEVICE_PROP_HANDLE);
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if (bootverbose)
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device_printf(dev, "UID %#04x reg %#04jx managed '%s' "
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"phy-connection-type '%s' phy-mode '%s' phy-handle '%s'\n",
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sc->uid, sc->reg, sc->managed[0] != '\0' ? sc->managed : "",
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sc->phy_conn_type[0] != '\0' ? sc->phy_conn_type : "",
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sc->phy_mode[0] != '\0' ? sc->phy_mode : "",
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sc->phy_channel != NULL ? acpi_name(sc->phy_channel) : "");
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return (0);
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}
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static bool
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dpaa2_mac_dev_match_id(device_t dev, uint32_t id)
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{
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struct dpaa2_mac_dev_softc *sc;
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if (dev == NULL)
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return (false);
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sc = device_get_softc(dev);
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if (sc->uid == id)
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return (true);
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return (false);
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}
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static device_t
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dpaa2_mac_dev_get_phy_dev(device_t dev)
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{
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struct dpaa2_mac_dev_softc *sc;
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if (dev == NULL)
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return (NULL);
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sc = device_get_softc(dev);
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if (sc->phy_channel == NULL)
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return (NULL);
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return (acpi_get_device(sc->phy_channel));
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}
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static device_method_t dpaa2_mac_dev_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dpaa2_mac_dev_probe),
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DEVMETHOD(device_attach, dpaa2_mac_dev_attach),
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DEVMETHOD(device_detach, bus_generic_detach),
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DEVMETHOD_END
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};
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DEFINE_CLASS_0(dpaa2_mac_dev, dpaa2_mac_dev_driver, dpaa2_mac_dev_methods,
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sizeof(struct dpaa2_mac_dev_softc));
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DRIVER_MODULE(dpaa2_mac_dev, dpaa2_mc, dpaa2_mac_dev_driver, 0, 0);
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MODULE_DEPEND(dpaa2_mac_dev, memac_mdio_acpi, 1, 1, 1);
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/*
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* Device interface.
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*/
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static int
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dpaa2_mc_acpi_probe(device_t dev)
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{
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static char *dpaa2_mc_ids[] = { "NXP0008", NULL };
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int rc;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
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rc = ACPI_ID_PROBE(device_get_parent(dev), dev, dpaa2_mc_ids, NULL);
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if (rc <= 0)
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device_set_desc(dev, "DPAA2 Management Complex");
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return (rc);
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}
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/* Context for walking PRxx child devices. */
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struct dpaa2_mc_acpi_prxx_walk_ctx {
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device_t dev;
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int count;
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int countok;
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};
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static ACPI_STATUS
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dpaa2_mc_acpi_probe_child(ACPI_HANDLE h, device_t *dev, int level, void *arg)
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{
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struct dpaa2_mc_acpi_prxx_walk_ctx *ctx;
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struct acpi_device *ad;
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device_t child;
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uint32_t uid;
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ctx = (struct dpaa2_mc_acpi_prxx_walk_ctx *)arg;
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ctx->count++;
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#if 0
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device_printf(ctx->dev, "%s: %s level %d count %d\n", __func__,
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acpi_name(h), level, ctx->count);
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#endif
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if (ACPI_FAILURE(acpi_GetInteger(h, "_UID", &uid)))
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return (AE_OK);
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#if 0
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if (bootverbose)
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device_printf(ctx->dev, "%s: Found child Ports _UID %u\n",
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__func__, uid);
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#endif
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/* Technically M_ACPIDEV */
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if ((ad = malloc(sizeof(*ad), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL)
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return (AE_OK);
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child = device_add_child(ctx->dev, "dpaa2_mac_dev", -1);
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if (child == NULL) {
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free(ad, M_DEVBUF);
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return (AE_OK);
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}
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ad->ad_handle = h;
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ad->ad_cls_class = 0xffffff;
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resource_list_init(&ad->ad_rl);
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device_set_ivars(child, ad);
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*dev = child;
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ctx->countok++;
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return (AE_OK);
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}
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static int
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dpaa2_mc_acpi_attach(device_t dev)
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{
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struct dpaa2_mc_softc *sc;
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sc = device_get_softc(dev);
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sc->acpi_based = true;
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struct dpaa2_mc_acpi_prxx_walk_ctx ctx;
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ctx.dev = dev;
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ctx.count = 0;
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ctx.countok = 0;
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ACPI_SCAN_CHILDREN(device_get_parent(dev), dev, 2,
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dpaa2_mc_acpi_probe_child, &ctx);
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#if 0
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device_printf(dev, "Found %d child Ports in ASL, %d ok\n",
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ctx.count, ctx.countok);
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#endif
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return (dpaa2_mc_attach(dev));
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}
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/*
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* ACPI compat layer.
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*/
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static device_t
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dpaa2_mc_acpi_find_dpaa2_mac_dev(device_t dev, uint32_t id)
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{
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int devcount, error, i, len;
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device_t *devlist, mdev;
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const char *mdevname;
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error = device_get_children(dev, &devlist, &devcount);
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if (error != 0)
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return (NULL);
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for (i = 0; i < devcount; i++) {
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mdev = devlist[i];
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mdevname = device_get_name(mdev);
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if (mdevname != NULL) {
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len = strlen(mdevname);
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if (strncmp("dpaa2_mac_dev", mdevname, len) != 0)
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continue;
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} else {
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continue;
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}
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if (!device_is_attached(mdev))
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continue;
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if (dpaa2_mac_dev_match_id(mdev, id))
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return (mdev);
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}
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return (NULL);
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}
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static int
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dpaa2_mc_acpi_get_phy_dev(device_t dev, device_t *phy_dev, uint32_t id)
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{
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device_t mdev, pdev;
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mdev = dpaa2_mc_acpi_find_dpaa2_mac_dev(dev, id);
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if (mdev == NULL) {
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device_printf(dev, "%s: error finding dpmac device with id=%u\n",
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__func__, id);
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return (ENXIO);
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}
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pdev = dpaa2_mac_dev_get_phy_dev(mdev);
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if (pdev == NULL) {
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device_printf(dev, "%s: error getting MDIO device for dpamc %s "
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"(id=%u)\n", __func__, device_get_nameunit(mdev), id);
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return (ENXIO);
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}
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if (phy_dev != NULL)
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*phy_dev = pdev;
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return (0);
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}
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static ssize_t
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dpaa2_mc_acpi_get_property(device_t dev, device_t child, const char *propname,
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void *propvalue, size_t size, device_property_type_t type)
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{
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return (bus_generic_get_property(dev, child, propname, propvalue, size,
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type));
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}
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static int
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dpaa2_mc_acpi_read_ivar(device_t dev, device_t child, int index,
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uintptr_t *result)
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{
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/*
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* This is special in that it passes "child" as second argument rather
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* than "dev". acpi_get_handle() in dpaa2_mac_dev_attach() calls the
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* read on parent(dev), dev and gets us here not to ACPI. Hence we
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* need to keep child as-is and pass it to our parent which is ACPI.
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* Only that gives the desired result.
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*/
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return (BUS_READ_IVAR(device_get_parent(dev), child, index, result));
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}
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static device_method_t dpaa2_mc_acpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dpaa2_mc_acpi_probe),
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DEVMETHOD(device_attach, dpaa2_mc_acpi_attach),
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DEVMETHOD(device_detach, dpaa2_mc_detach),
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/* Bus interface */
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DEVMETHOD(bus_get_rman, dpaa2_mc_rman),
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DEVMETHOD(bus_alloc_resource, dpaa2_mc_alloc_resource),
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DEVMETHOD(bus_adjust_resource, dpaa2_mc_adjust_resource),
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DEVMETHOD(bus_release_resource, dpaa2_mc_release_resource),
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DEVMETHOD(bus_activate_resource, dpaa2_mc_activate_resource),
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DEVMETHOD(bus_deactivate_resource, dpaa2_mc_deactivate_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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/* Pseudo-PCIB interface */
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DEVMETHOD(pcib_alloc_msi, dpaa2_mc_alloc_msi),
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DEVMETHOD(pcib_release_msi, dpaa2_mc_release_msi),
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DEVMETHOD(pcib_map_msi, dpaa2_mc_map_msi),
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DEVMETHOD(pcib_get_id, dpaa2_mc_get_id),
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/* DPAA2 MC bus interface */
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DEVMETHOD(dpaa2_mc_manage_dev, dpaa2_mc_manage_dev),
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DEVMETHOD(dpaa2_mc_get_free_dev,dpaa2_mc_get_free_dev),
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DEVMETHOD(dpaa2_mc_get_dev, dpaa2_mc_get_dev),
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DEVMETHOD(dpaa2_mc_get_shared_dev, dpaa2_mc_get_shared_dev),
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DEVMETHOD(dpaa2_mc_reserve_dev, dpaa2_mc_reserve_dev),
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DEVMETHOD(dpaa2_mc_release_dev, dpaa2_mc_release_dev),
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DEVMETHOD(dpaa2_mc_get_phy_dev, dpaa2_mc_acpi_get_phy_dev),
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/* ACPI compar layer. */
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DEVMETHOD(bus_read_ivar, dpaa2_mc_acpi_read_ivar),
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DEVMETHOD(bus_get_property, dpaa2_mc_acpi_get_property),
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(dpaa2_mc, dpaa2_mc_acpi_driver, dpaa2_mc_acpi_methods,
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sizeof(struct dpaa2_mc_softc), dpaa2_mc_driver);
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/* Make sure miibus gets procesed first. */
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DRIVER_MODULE_ORDERED(dpaa2_mc, acpi, dpaa2_mc_acpi_driver, NULL, NULL,
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SI_ORDER_ANY);
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MODULE_DEPEND(dpaa2_mc, memac_mdio_acpi, 1, 1, 1);
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