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sys/dev/dpaa2/dpaa2_mc_acpi.c

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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright © 2021-2022 Dmitry Salychev
* Copyright © 2021 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 (ACPI-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 <contrib/dev/acpica/include/acpi.h>
#include <dev/acpica/acpivar.h>
#include "acpi_bus_if.h"
#include "pcib_if.h"
#include "pci_if.h"
#include "dpaa2_mcp.h"
#include "dpaa2_mc.h"
#include "dpaa2_mc_if.h"
struct dpaa2_mac_dev_softc {
int uid;
uint64_t reg;
char managed[64];
char phy_conn_type[64];
char phy_mode[64];
ACPI_HANDLE phy_channel;
};
static int
dpaa2_mac_dev_probe(device_t dev)
{
uint64_t reg;
ssize_t s;
s = device_get_property(dev, "reg", &reg, sizeof(reg),
DEVICE_PROP_UINT64);
if (s == -1)
return (ENXIO);
device_set_desc(dev, "DPAA2 MAC DEV");
return (BUS_PROBE_DEFAULT);
}
static int
dpaa2_mac_dev_attach(device_t dev)
{
struct dpaa2_mac_dev_softc *sc;
ACPI_HANDLE h;
ssize_t s;
sc = device_get_softc(dev);
h = acpi_get_handle(dev);
if (h == NULL)
return (ENXIO);
s = acpi_GetInteger(h, "_UID", &sc->uid);
if (ACPI_FAILURE(s)) {
device_printf(dev, "Cannot find '_UID' property: %zd\n", s);
return (ENXIO);
}
s = device_get_property(dev, "reg", &sc->reg, sizeof(sc->reg),
DEVICE_PROP_UINT64);
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, "phy-mode", sc->phy_mode,
sizeof(sc->phy_mode), DEVICE_PROP_ANY);
s = device_get_property(dev, "phy-handle", &sc->phy_channel,
sizeof(sc->phy_channel), DEVICE_PROP_HANDLE);
if (bootverbose)
device_printf(dev, "UID %#04x reg %#04jx managed '%s' "
"phy-connection-type '%s' phy-mode '%s' phy-handle '%s'\n",
sc->uid, sc->reg, sc->managed[0] != '\0' ? sc->managed : "",
sc->phy_conn_type[0] != '\0' ? sc->phy_conn_type : "",
sc->phy_mode[0] != '\0' ? sc->phy_mode : "",
sc->phy_channel != NULL ? acpi_name(sc->phy_channel) : "");
return (0);
}
static bool
dpaa2_mac_dev_match_id(device_t dev, uint32_t id)
{
struct dpaa2_mac_dev_softc *sc;
if (dev == NULL)
return (false);
sc = device_get_softc(dev);
if (sc->uid == id)
return (true);
return (false);
}
static device_t
dpaa2_mac_dev_get_phy_dev(device_t dev)
{
struct dpaa2_mac_dev_softc *sc;
if (dev == NULL)
return (NULL);
sc = device_get_softc(dev);
if (sc->phy_channel == NULL)
return (NULL);
return (acpi_get_device(sc->phy_channel));
}
static device_method_t dpaa2_mac_dev_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dpaa2_mac_dev_probe),
DEVMETHOD(device_attach, dpaa2_mac_dev_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD_END
};
DEFINE_CLASS_0(dpaa2_mac_dev, dpaa2_mac_dev_driver, dpaa2_mac_dev_methods,
sizeof(struct dpaa2_mac_dev_softc));
DRIVER_MODULE(dpaa2_mac_dev, dpaa2_mc, dpaa2_mac_dev_driver, 0, 0);
MODULE_DEPEND(dpaa2_mac_dev, memac_mdio_acpi, 1, 1, 1);
/*
* Device interface.
*/
static int
dpaa2_mc_acpi_probe(device_t dev)
{
static char *dpaa2_mc_ids[] = { "NXP0008", NULL };
int rc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
rc = ACPI_ID_PROBE(device_get_parent(dev), dev, dpaa2_mc_ids, NULL);
if (rc <= 0)
device_set_desc(dev, "DPAA2 Management Complex");
return (rc);
}
/* Context for walking PRxx child devices. */
struct dpaa2_mc_acpi_prxx_walk_ctx {
device_t dev;
int count;
int countok;
};
static ACPI_STATUS
dpaa2_mc_acpi_probe_child(ACPI_HANDLE h, device_t *dev, int level, void *arg)
{
struct dpaa2_mc_acpi_prxx_walk_ctx *ctx;
struct acpi_device *ad;
device_t child;
uint32_t uid;
ctx = (struct dpaa2_mc_acpi_prxx_walk_ctx *)arg;
ctx->count++;
#if 0
device_printf(ctx->dev, "%s: %s level %d count %d\n", __func__,
acpi_name(h), level, ctx->count);
#endif
if (ACPI_FAILURE(acpi_GetInteger(h, "_UID", &uid)))
return (AE_OK);
#if 0
if (bootverbose)
device_printf(ctx->dev, "%s: Found child Ports _UID %u\n",
__func__, uid);
#endif
/* Technically M_ACPIDEV */
if ((ad = malloc(sizeof(*ad), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL)
return (AE_OK);
child = device_add_child(ctx->dev, "dpaa2_mac_dev", -1);
if (child == NULL) {
free(ad, M_DEVBUF);
return (AE_OK);
}
ad->ad_handle = h;
ad->ad_cls_class = 0xffffff;
resource_list_init(&ad->ad_rl);
device_set_ivars(child, ad);
*dev = child;
ctx->countok++;
return (AE_OK);
}
static int
dpaa2_mc_acpi_attach(device_t dev)
{
struct dpaa2_mc_softc *sc;
sc = device_get_softc(dev);
sc->acpi_based = true;
struct dpaa2_mc_acpi_prxx_walk_ctx ctx;
ctx.dev = dev;
ctx.count = 0;
ctx.countok = 0;
ACPI_SCAN_CHILDREN(device_get_parent(dev), dev, 2,
dpaa2_mc_acpi_probe_child, &ctx);
#if 0
device_printf(dev, "Found %d child Ports in ASL, %d ok\n",
ctx.count, ctx.countok);
#endif
return (dpaa2_mc_attach(dev));
}
/*
* ACPI compat layer.
*/
static device_t
dpaa2_mc_acpi_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) {
len = strlen(mdevname);
if (strncmp("dpaa2_mac_dev", mdevname, len) != 0)
continue;
} else {
continue;
}
if (!device_is_attached(mdev))
continue;
if (dpaa2_mac_dev_match_id(mdev, id))
return (mdev);
}
return (NULL);
}
static int
dpaa2_mc_acpi_get_phy_dev(device_t dev, device_t *phy_dev, uint32_t id)
{
device_t mdev, pdev;
mdev = dpaa2_mc_acpi_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_dev_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;
return (0);
}
static ssize_t
dpaa2_mc_acpi_get_property(device_t dev, device_t child, const char *propname,
void *propvalue, size_t size, device_property_type_t type)
{
return (bus_generic_get_property(dev, child, propname, propvalue, size,
type));
}
static int
dpaa2_mc_acpi_read_ivar(device_t dev, device_t child, int index,
uintptr_t *result)
{
/*
* This is special in that it passes "child" as second argument rather
* than "dev". acpi_get_handle() in dpaa2_mac_dev_attach() calls the
* read on parent(dev), dev and gets us here not to ACPI. Hence we
* need to keep child as-is and pass it to our parent which is ACPI.
* Only that gives the desired result.
*/
return (BUS_READ_IVAR(device_get_parent(dev), child, index, result));
}
static device_method_t dpaa2_mc_acpi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dpaa2_mc_acpi_probe),
DEVMETHOD(device_attach, dpaa2_mc_acpi_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_acpi_get_phy_dev),
/* ACPI compar layer. */
DEVMETHOD(bus_read_ivar, dpaa2_mc_acpi_read_ivar),
DEVMETHOD(bus_get_property, dpaa2_mc_acpi_get_property),
DEVMETHOD_END
};
DEFINE_CLASS_1(dpaa2_mc, dpaa2_mc_acpi_driver, dpaa2_mc_acpi_methods,
sizeof(struct dpaa2_mc_softc), dpaa2_mc_driver);
/* Make sure miibus gets procesed first. */
DRIVER_MODULE_ORDERED(dpaa2_mc, acpi, dpaa2_mc_acpi_driver, NULL, NULL,
SI_ORDER_ANY);
MODULE_DEPEND(dpaa2_mc, memac_mdio_acpi, 1, 1, 1);