The branch main has been updated by manu:
URL:
https://cgit.FreeBSD.org/src/commit/?id=29bfcb3a286fcf53ae6479f735d8ed49bd4a7c1f
commit 29bfcb3a286fcf53ae6479f735d8ed49bd4a7c1f
Author: Emmanuel Vadot <m...@freebsd.org>
AuthorDate: 2023-08-23 06:58:03 +0000
Commit: Emmanuel Vadot <m...@freebsd.org>
CommitDate: 2023-08-23 07:00:05 +0000
arm64: xilinx: Add glue driver for usb3 controller
Like other dwc3 controller, on Xilinx ZynqMP the base node is just here
to provide resets, the main dwc3 controller node is a child node.
Sponsored by: Beckhoff Automation GmbH & Co. KG
---
sys/conf/files.arm64 | 1 +
sys/dev/usb/controller/xlnx_dwc3.c | 149 +++++++++++++++++++++++++++++++++++++
2 files changed, 150 insertions(+)
diff --git a/sys/conf/files.arm64 b/sys/conf/files.arm64
index 2036bbe918ba..390d9e5db487 100644
--- a/sys/conf/files.arm64
+++ b/sys/conf/files.arm64
@@ -697,3 +697,4 @@ arm64/rockchip/clk/rk3568_pmucru.c optional fdt
soc_rockchip_rk3568
# Xilinx
arm/xilinx/uart_dev_cdnc.c optional uart soc_xilinx_zynq
fdt
arm/xilinx/zy7_gpio.c optional gpio soc_xilinx_zynq
fdt
+dev/usb/controller/xlnx_dwc3.c optional fdt xhci
soc_xilinx_zynq fdt
diff --git a/sys/dev/usb/controller/xlnx_dwc3.c
b/sys/dev/usb/controller/xlnx_dwc3.c
new file mode 100644
index 000000000000..aad929663eed
--- /dev/null
+++ b/sys/dev/usb/controller/xlnx_dwc3.c
@@ -0,0 +1,149 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2022 Beckhoff Automation GmbH & Co. KG
+ *
+ * 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.
+ */
+
+/*
+ * Xilinx DWC3 glue
+ */
+
+#include <sys/cdefs.h>
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/gpio.h>
+#include <machine/bus.h>
+
+#include <dev/fdt/simplebus.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#include <dev/ofw/ofw_subr.h>
+
+#include <dev/extres/clk/clk.h>
+#include <dev/extres/hwreset/hwreset.h>
+#include <dev/extres/phy/phy_usb.h>
+#include <dev/extres/syscon/syscon.h>
+
+static struct ofw_compat_data compat_data[] = {
+ { "xlnx,zynqmp-dwc3", 1 },
+ { NULL, 0 }
+};
+
+struct xlnx_dwc3_softc {
+ struct simplebus_softc sc;
+ device_t dev;
+ hwreset_t rst_crst;
+ hwreset_t rst_hibrst;
+ hwreset_t rst_apbrst;
+};
+
+static int
+xlnx_dwc3_probe(device_t dev)
+{
+ phandle_t node;
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
+ return (ENXIO);
+
+ /* Binding says that we need a child node for the actual dwc3
controller */
+ node = ofw_bus_get_node(dev);
+ if (OF_child(node) <= 0)
+ return (ENXIO);
+
+ device_set_desc(dev, "Xilinx ZYNQMP DWC3");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+xlnx_dwc3_attach(device_t dev)
+{
+ struct xlnx_dwc3_softc *sc;
+ device_t cdev;
+ phandle_t node, child;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+ node = ofw_bus_get_node(dev);
+
+ /*
+ * Put module out of reset
+ * Based on the bindings this should be mandatory to have
+ * but reality shows that they aren't always there.
+ * This is the case on the DTB in the AVnet Ultra96
+ */
+ if (hwreset_get_by_ofw_name(dev, node, "usb_crst", &sc->rst_crst) == 0)
{
+ if (hwreset_deassert(sc->rst_crst) != 0) {
+ device_printf(dev, "Cannot deassert reset\n");
+ return (ENXIO);
+ }
+ }
+ if (hwreset_get_by_ofw_name(dev, node, "usb_hibrst", &sc->rst_hibrst)
== 0) {
+ if (hwreset_deassert(sc->rst_crst) != 0) {
+ device_printf(dev, "Cannot deassert reset\n");
+ return (ENXIO);
+ }
+ }
+ if (hwreset_get_by_ofw_name(dev, node, "usb_apbrst", &sc->rst_apbrst)
== 0) {
+ if (hwreset_deassert(sc->rst_crst) != 0) {
+ device_printf(dev, "Cannot deassert reset\n");
+ return (ENXIO);
+ }
+ }
+
+ simplebus_init(dev, node);
+ if (simplebus_fill_ranges(node, &sc->sc) < 0) {
+ device_printf(dev, "could not get ranges\n");
+ return (ENXIO);
+ }
+
+ for (child = OF_child(node); child > 0; child = OF_peer(child)) {
+ cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
+ if (cdev != NULL)
+ device_probe_and_attach(cdev);
+ }
+
+ return (bus_generic_attach(dev));
+}
+
+static device_method_t xlnx_dwc3_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, xlnx_dwc3_probe),
+ DEVMETHOD(device_attach, xlnx_dwc3_attach),
+
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_1(xlnx_dwc3, xlnx_dwc3_driver, xlnx_dwc3_methods,
+ sizeof(struct xlnx_dwc3_softc), simplebus_driver);
+DRIVER_MODULE(xlnx_dwc3, simplebus, xlnx_dwc3_driver, 0, 0);
