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sys/dev/dpaa2/memac_mdio_acpi.c
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/*- | |||||
* SPDX-License-Identifier: BSD-2-Clause | |||||
* | |||||
* Copyright © 2021-2022 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("$FreeBSD$"); | |||||
#include <sys/param.h> | |||||
#include <sys/kernel.h> | |||||
#include <sys/bus.h> | |||||
#include <sys/rman.h> | |||||
#include <sys/malloc.h> | |||||
#include <sys/module.h> | |||||
#include <sys/endian.h> | |||||
#include <sys/socket.h> | |||||
#include <machine/bus.h> | |||||
#include <machine/resource.h> | |||||
#include <contrib/dev/acpica/include/acpi.h> | |||||
#include <dev/acpica/acpivar.h> | |||||
#include <net/if.h> | |||||
#include <net/if_var.h> | |||||
#include <net/if_media.h> | |||||
#include <dev/mii/mii.h> | |||||
#include <dev/mii/miivar.h> | |||||
#include "memac_mdio.h" | |||||
#include "memac_mdio_if.h" | |||||
#include "acpi_bus_if.h" | |||||
#include "miibus_if.h" | |||||
/* -------------------------------------------------------------------------- */ | |||||
struct memacphy_softc_acpi { | |||||
struct memacphy_softc_common scc; | |||||
int uid; | |||||
uint64_t phy_channel; | |||||
char compatible[64]; | |||||
}; | |||||
static void | |||||
memacphy_acpi_miibus_statchg(device_t dev) | |||||
{ | |||||
struct memacphy_softc_acpi *sc; | |||||
sc = device_get_softc(dev); | |||||
memacphy_miibus_statchg(&sc->scc); | |||||
} | |||||
static int | |||||
memacphy_acpi_set_ni_dev(device_t dev, device_t nidev) | |||||
{ | |||||
struct memacphy_softc_acpi *sc; | |||||
sc = device_get_softc(dev); | |||||
return (memacphy_set_ni_dev(&sc->scc, nidev)); | |||||
} | |||||
static int | |||||
memacphy_acpi_get_phy_loc(device_t dev, int *phy_loc) | |||||
{ | |||||
struct memacphy_softc_acpi *sc; | |||||
sc = device_get_softc(dev); | |||||
return (memacphy_get_phy_loc(&sc->scc, phy_loc)); | |||||
} | |||||
static int | |||||
memacphy_acpi_probe(device_t dev) | |||||
{ | |||||
device_set_desc(dev, "MEMAC PHY (acpi)"); | |||||
return (BUS_PROBE_DEFAULT); | |||||
} | |||||
static int | |||||
memacphy_acpi_attach(device_t dev) | |||||
{ | |||||
struct memacphy_softc_acpi *sc; | |||||
ACPI_HANDLE h; | |||||
ssize_t s; | |||||
sc = device_get_softc(dev); | |||||
sc->scc.dev = dev; | |||||
h = acpi_get_handle(dev); | |||||
s = acpi_GetInteger(h, "_UID", &sc->uid); | |||||
if (ACPI_FAILURE(s)) { | |||||
device_printf(dev, "Cannot get '_UID' property: %zd\n", s); | |||||
return (ENXIO); | |||||
} | |||||
s = device_get_property(dev, "phy-channel", | |||||
&sc->phy_channel, sizeof(sc->phy_channel), DEVICE_PROP_UINT64); | |||||
if (s != -1) | |||||
sc->scc.phy = sc->phy_channel; | |||||
else | |||||
sc->scc.phy = -1; | |||||
s = device_get_property(dev, "compatible", | |||||
sc->compatible, sizeof(sc->compatible), DEVICE_PROP_ANY); | |||||
if (bootverbose) | |||||
device_printf(dev, "UID %#04x phy-channel %ju compatible '%s' phy %u\n", | |||||
sc->uid, sc->phy_channel, | |||||
sc->compatible[0] != '\0' ? sc->compatible : "", sc->scc.phy); | |||||
if (sc->scc.phy == -1) | |||||
return (ENXIO); | |||||
return (0); | |||||
} | |||||
static device_method_t memacphy_acpi_methods[] = { | |||||
/* Device interface */ | |||||
DEVMETHOD(device_probe, memacphy_acpi_probe), | |||||
DEVMETHOD(device_attach, memacphy_acpi_attach), | |||||
DEVMETHOD(device_detach, bus_generic_detach), | |||||
/* MII interface */ | |||||
DEVMETHOD(miibus_readreg, memacphy_miibus_readreg), | |||||
DEVMETHOD(miibus_writereg, memacphy_miibus_writereg), | |||||
DEVMETHOD(miibus_statchg, memacphy_acpi_miibus_statchg), | |||||
/* memac */ | |||||
DEVMETHOD(memac_mdio_set_ni_dev, memacphy_acpi_set_ni_dev), | |||||
DEVMETHOD(memac_mdio_get_phy_loc, memacphy_acpi_get_phy_loc), | |||||
DEVMETHOD_END | |||||
}; | |||||
DEFINE_CLASS_0(memacphy_acpi, memacphy_acpi_driver, memacphy_acpi_methods, | |||||
sizeof(struct memacphy_softc_acpi)); | |||||
EARLY_DRIVER_MODULE(memacphy_acpi, memac_mdio_acpi, memacphy_acpi_driver, 0, 0, | |||||
BUS_PASS_SUPPORTDEV); | |||||
DRIVER_MODULE(miibus, memacphy_acpi, miibus_driver, 0, 0); | |||||
MODULE_DEPEND(memacphy_acpi, miibus, 1, 1, 1); | |||||
/* -------------------------------------------------------------------------- */ | |||||
struct memac_mdio_softc_acpi { | |||||
struct memac_mdio_softc_common scc; | |||||
}; | |||||
static int | |||||
memac_acpi_miibus_readreg(device_t dev, int phy, int reg) | |||||
{ | |||||
struct memac_mdio_softc_acpi *sc; | |||||
sc = device_get_softc(dev); | |||||
return (memac_miibus_readreg(&sc->scc, phy, reg)); | |||||
} | |||||
static int | |||||
memac_acpi_miibus_writereg(device_t dev, int phy, int reg, int data) | |||||
{ | |||||
struct memac_mdio_softc_acpi *sc; | |||||
sc = device_get_softc(dev); | |||||
return (memac_miibus_writereg(&sc->scc, phy, reg, data)); | |||||
} | |||||
/* Context for walking PHY child devices. */ | |||||
struct memac_mdio_walk_ctx { | |||||
device_t dev; | |||||
int count; | |||||
int countok; | |||||
}; | |||||
static char *memac_mdio_ids[] = { | |||||
"NXP0006", | |||||
NULL | |||||
}; | |||||
static int | |||||
memac_mdio_acpi_probe(device_t dev) | |||||
{ | |||||
int rc; | |||||
if (acpi_disabled("fsl_memac_mdio")) | |||||
return (ENXIO); | |||||
rc = ACPI_ID_PROBE(device_get_parent(dev), dev, memac_mdio_ids, NULL); | |||||
if (rc <= 0) | |||||
device_set_desc(dev, "Freescale XGMAC MDIO Bus"); | |||||
return (rc); | |||||
} | |||||
static ACPI_STATUS | |||||
memac_mdio_acpi_probe_child(ACPI_HANDLE h, device_t *dev, int level, void *arg) | |||||
{ | |||||
struct memac_mdio_walk_ctx *ctx; | |||||
struct acpi_device *ad; | |||||
device_t child; | |||||
uint32_t adr; | |||||
ctx = (struct memac_mdio_walk_ctx *)arg; | |||||
ctx->count++; | |||||
if (ACPI_FAILURE(acpi_GetInteger(h, "_ADR", &adr))) | |||||
return (AE_OK); | |||||
/* Technically M_ACPIDEV */ | |||||
if ((ad = malloc(sizeof(*ad), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) | |||||
return (AE_OK); | |||||
child = device_add_child(ctx->dev, "memacphy_acpi", -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 | |||||
memac_mdio_acpi_attach(device_t dev) | |||||
{ | |||||
struct memac_mdio_softc_acpi *sc; | |||||
struct memac_mdio_walk_ctx ctx; | |||||
int error; | |||||
sc = device_get_softc(dev); | |||||
sc->scc.dev = dev; | |||||
error = memac_mdio_generic_attach(&sc->scc); | |||||
if (error != 0) | |||||
return (error); | |||||
ctx.dev = dev; | |||||
ctx.count = 0; | |||||
ctx.countok = 0; | |||||
ACPI_SCAN_CHILDREN(device_get_parent(dev), dev, 1, | |||||
memac_mdio_acpi_probe_child, &ctx); | |||||
if (ctx.countok > 0) { | |||||
bus_generic_probe(dev); | |||||
bus_generic_attach(dev); | |||||
} | |||||
return (0); | |||||
} | |||||
static int | |||||
memac_mdio_acpi_detach(device_t dev) | |||||
{ | |||||
struct memac_mdio_softc_acpi *sc; | |||||
sc = device_get_softc(dev); | |||||
return (memac_mdio_generic_detach(&sc->scc)); | |||||
} | |||||
static device_method_t memac_mdio_acpi_methods[] = { | |||||
/* Device interface */ | |||||
DEVMETHOD(device_probe, memac_mdio_acpi_probe), | |||||
DEVMETHOD(device_attach, memac_mdio_acpi_attach), | |||||
DEVMETHOD(device_detach, memac_mdio_acpi_detach), | |||||
/* MII interface */ | |||||
DEVMETHOD(miibus_readreg, memac_acpi_miibus_readreg), | |||||
DEVMETHOD(miibus_writereg, memac_acpi_miibus_writereg), | |||||
/* .. */ | |||||
DEVMETHOD(bus_add_child, bus_generic_add_child), | |||||
DEVMETHOD(bus_read_ivar, memac_mdio_read_ivar), | |||||
DEVMETHOD(bus_get_property, memac_mdio_get_property), | |||||
DEVMETHOD_END | |||||
}; | |||||
DEFINE_CLASS_0(memac_mdio_acpi, memac_mdio_acpi_driver, memac_mdio_acpi_methods, | |||||
sizeof(struct memac_mdio_softc_acpi)); | |||||
EARLY_DRIVER_MODULE(memac_mdio_acpi, acpi, memac_mdio_acpi_driver, 0, 0, | |||||
BUS_PASS_SUPPORTDEV); | |||||
DRIVER_MODULE(miibus, memac_mdio_acpi, miibus_driver, 0, 0); | |||||
MODULE_DEPEND(memac_mdio_acpi, miibus, 1, 1, 1); | |||||
MODULE_VERSION(memac_mdio_acpi, 1); |