The branch main has been updated by bnovkov:
URL:
https://cgit.FreeBSD.org/src/commit/?id=7a9a15eaf9170e06533f20d44540ab15af9142ef
commit 7a9a15eaf9170e06533f20d44540ab15af9142ef
Author: Bojan Novković <bnov...@freebsd.org>
AuthorDate: 2025-01-18 19:10:39 +0000
Commit: Bojan Novković <bnov...@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 <bnov...@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);
