Date: Fri, 1 Aug 2025 12:37:10 GMT From: Bojan =?utf-8?Q?Novkovi=C4=87?= <bnovkov@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 7a9a15eaf917 - main - if_dwc: Add support for cvitek ethernet controller Message-ID: <202508011237.571CbAUm051992@gitrepo.freebsd.org>
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The branch main has been updated by bnovkov: URL: https://cgit.FreeBSD.org/src/commit/?id=7a9a15eaf9170e06533f20d44540ab15af9142ef commit 7a9a15eaf9170e06533f20d44540ab15af9142ef Author: Bojan Novković <bnovkov@FreeBSD.org> AuthorDate: 2025-01-18 19:10:39 +0000 Commit: Bojan Novković <bnovkov@FreeBSD.org> CommitDate: 2025-08-01 12:35:54 +0000 if_dwc: Add support for cvitek ethernet controller This patch adds support for the cvitek flavor of the DWC ethernet controller. This controller is present on the Milk-V riscv SoCs. Reviewed by: manu Differential Revision: https://reviews.freebsd.org/D48530 --- sys/dev/dwc/if_dwc_cvitek.c | 89 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) diff --git a/sys/dev/dwc/if_dwc_cvitek.c b/sys/dev/dwc/if_dwc_cvitek.c new file mode 100644 index 000000000000..fd9a844d3fd4 --- /dev/null +++ b/sys/dev/dwc/if_dwc_cvitek.c @@ -0,0 +1,89 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2025 Bojan Novković <bnovkov@FreeBSD.org> + * + * 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/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/socket.h> +#include <sys/module.h> + +#include <net/if.h> + +#include <machine/bus.h> +#include <machine/param.h> + +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> +#include <dev/clk/clk.h> +#include <dev/hwreset/hwreset.h> + +#include <dev/dwc/if_dwcvar.h> +#include <dev/dwc/dwc1000_reg.h> + +#include "if_dwc_if.h" + +static int +if_dwc_cvitek_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (!ofw_bus_is_compatible(dev, "cvitek,ethernet")) + return (ENXIO); + device_set_desc(dev, "CVITEK Ethernet Controller"); + + return (BUS_PROBE_DEFAULT); +} + +static int +if_dwc_cvitek_mii_clk(device_t dev) +{ + /* + * XXX: This is a hack to get the driver working on + * the Milk-V platform. For reference, the u-boot designware + * driver uses the same '150_250M' clock value, but if_dwc + * will not work on Milk-V hardware unless the lowest + * bit of the PHY register address is always set. + */ + return (0x10 | GMAC_MII_CLK_150_250M_DIV102); +} + +static device_method_t dwc_cvitek_methods[] = { + DEVMETHOD(device_probe, if_dwc_cvitek_probe), + + DEVMETHOD(if_dwc_mii_clk, if_dwc_cvitek_mii_clk), + DEVMETHOD_END +}; + +extern driver_t dwc_driver; + +DEFINE_CLASS_1(dwc, dwc_cvitek_driver, dwc_cvitek_methods, + sizeof(struct dwc_softc), dwc_driver); +DRIVER_MODULE(dwc_cvitek, simplebus, dwc_cvitek_driver, 0, 0); +MODULE_DEPEND(dwc_cvitek, dwc, 1, 1, 1);
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