[MT7620] add ehci/ohci USB support.

The newer chips don't use OTG; they're more traditional USB.

Submitted by:	Stanislav Galabov <sgalabov@gmail.com>

2 files changed, 490 insertions, 0 deletions

diff --git a/sys/mips/rt305x/rt305x_ehci.c b/sys/mips/rt305x/rt305x_ehci.c
new file mode 100644
index 0000000..9b2fa22
--- /dev/null
+++ b/sys/mips/rt305x/rt305x_ehci.c
@@ -0,0 +1,245 @@
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*-
+ * Copyright (c) 2015 Stanislav Galabov. All rights reserved.
+ * Copyright (c) 2010,2011 Aleksandr Rybalko. All rights reserved.
+ * Copyright (c) 2007-2008 Hans Petter Selasky. All rights reserved.
+ *
+ * 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/stdint.h>
+#include <sys/stddef.h>
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/condvar.h>
+#include <sys/sysctl.h>
+#include <sys/sx.h>
+#include <sys/unistd.h>
+#include <sys/callout.h>
+#include <sys/malloc.h>
+#include <sys/priv.h>
+#include <sys/rman.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+
+#include <dev/usb/usb_core.h>
+#include <dev/usb/usb_busdma.h>
+#include <dev/usb/usb_process.h>
+#include <dev/usb/usb_util.h>
+
+#include <dev/usb/usb_controller.h>
+#include <dev/usb/usb_bus.h>
+
+#include <dev/usb/controller/ehci.h>
+
+#include <mips/rt305x/rt305xreg.h>
+#include <mips/rt305x/rt305x_sysctlvar.h>
+
+#define EHCI_HC_DEVSTR	"Ralink integrated USB 2.0 controller"
+
+static device_probe_t ehci_obio_probe;
+static device_attach_t ehci_obio_attach;
+static device_detach_t ehci_obio_detach;
+
+static int
+ehci_obio_probe(device_t self)
+{
+	device_set_desc(self, EHCI_HC_DEVSTR);
+
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+ehci_obio_attach(device_t self)
+{
+	ehci_softc_t *sc = device_get_softc(self);
+	uint32_t reg;
+	int err;
+	int rid;
+
+	/* setup controller interface softc */
+	reg = rt305x_sysctl_get(SYSCTL_SYSCFG1);
+	reg |= SYSCTL_SYSCFG1_USB0_HOST_MODE;
+	rt305x_sysctl_set(SYSCTL_SYSCFG1, reg);
+
+	reg = rt305x_sysctl_get(SYSCTL_CLKCFG1);
+	reg |= SYSCTL_CLKCFG1_UPHY0_CLK_EN;
+#ifdef MT7620
+	reg |= SYSCTL_CLKCFG1_UPHY1_CLK_EN;
+#endif
+	rt305x_sysctl_set(SYSCTL_CLKCFG1, reg);
+
+	reg = rt305x_sysctl_get(SYSCTL_RSTCTRL);
+	reg |= SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1;
+	rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
+	reg &= ~(SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1);
+	DELAY(100000);
+	rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
+	DELAY(100000);
+
+	/* initialise some bus fields */
+	sc->sc_bus.parent = self;
+	sc->sc_bus.devices = sc->sc_devices;
+	sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
+	sc->sc_bus.dma_bits = 32;
+
+	/* get all DMA memory */
+	if (usb_bus_mem_alloc_all(&sc->sc_bus,
+	    USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
+		printf("No mem\n");
+		return (ENOMEM);
+	}
+
+	rid = 0;
+	sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
+				RF_ACTIVE);
+	if (!sc->sc_io_res) {
+		device_printf(self, "Could not map memory\n");
+		goto error;
+	}
+	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
+	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
+	sc->sc_io_size = rman_get_size(sc->sc_io_res);
+
+	rid = 0;
+	sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
+		RF_SHAREABLE | RF_ACTIVE);
+	if (sc->sc_irq_res == NULL) {
+		device_printf(self, "Could not allocate irq\n");
+		goto error;
+	}
+
+	sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
+	if (!(sc->sc_bus.bdev)) {
+		device_printf(self, "Could not add USB device\n");
+		goto error;
+	}
+	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
+	device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
+
+	sprintf(sc->sc_vendor, "Ralink");
+
+	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
+		NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
+	if (err) {
+		device_printf(self, "Could not setup irq, %d\n", err);
+		sc->sc_intr_hdl = NULL;
+		goto error;
+	}
+
+	err = ehci_init(sc);
+	if (!err) {
+		err = device_probe_and_attach(sc->sc_bus.bdev);
+	}
+	if (err) {
+		device_printf(self, "USB init failed err=%d\n", err);
+		goto error;
+	}
+	return (0);
+
+error:
+	ehci_obio_detach(self);
+	return (ENXIO);
+}
+
+static int
+ehci_obio_detach(device_t self)
+{
+	ehci_softc_t *sc = device_get_softc(self);
+	device_t bdev;
+	int err;
+
+	if (sc->sc_bus.bdev) {
+		bdev = sc->sc_bus.bdev;
+		device_detach(bdev);
+		device_delete_child(self, bdev);
+	}
+	/* during module unload there are lots of children leftover */
+	device_delete_children(self);
+
+	if (sc->sc_irq_res && sc->sc_intr_hdl) {
+		/*
+		 * only call ehci_detach() after ehci_init()
+		 */
+		ehci_detach(sc);
+
+		/* Stop EHCI clock */
+		rt305x_sysctl_set(SYSCTL_CLKCFG1, 
+		  rt305x_sysctl_get(SYSCTL_CLKCFG1) & 
+		  ~(SYSCTL_CLKCFG1_UPHY0_CLK_EN
+#ifdef MT7620
+		    | SYSCTL_CLKCFG1_UPHY1_CLK_EN
+#endif
+		));
+
+		err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
+		if (err)
+			device_printf(self, "Could not tear down irq, %d\n",
+				err);
+		sc->sc_intr_hdl = NULL;
+	}
+	if (sc->sc_irq_res) {
+		bus_release_resource(self, SYS_RES_IRQ, 0,
+		    sc->sc_irq_res);
+		sc->sc_irq_res = NULL;
+	}
+	if (sc->sc_io_res) {
+		bus_release_resource(self, SYS_RES_MEMORY, 0,
+		    sc->sc_io_res);
+		sc->sc_io_res = NULL;
+	}
+	usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
+
+	return (0);
+}
+
+static device_method_t ehci_obio_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, ehci_obio_probe),
+	DEVMETHOD(device_attach, ehci_obio_attach),
+	DEVMETHOD(device_detach, ehci_obio_detach),
+	DEVMETHOD(device_suspend, bus_generic_suspend),
+	DEVMETHOD(device_resume, bus_generic_resume),
+	DEVMETHOD(device_shutdown, bus_generic_shutdown),
+
+	DEVMETHOD_END
+};
+
+static driver_t ehci_obio_driver = {
+	.name = "ehci",
+	.methods = ehci_obio_methods,
+	.size = sizeof(ehci_softc_t),
+};
+
+static devclass_t ehci_obio_devclass;
+
+DRIVER_MODULE(ehci, obio, ehci_obio_driver, ehci_obio_devclass, 0, 0);
diff --git a/sys/mips/rt305x/rt305x_ohci.c b/sys/mips/rt305x/rt305x_ohci.c
new file mode 100644
index 0000000..e726e60
--- /dev/null
+++ b/sys/mips/rt305x/rt305x_ohci.c
@@ -0,0 +1,245 @@
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*-
+ * Copyright (c) 2015 Stanislav Galabov. All rights reserved.
+ * Copyright (c) 2010,2011 Aleksandr Rybalko. All rights reserved.
+ * Copyright (c) 2007-2008 Hans Petter Selasky. All rights reserved.
+ *
+ * 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/stdint.h>
+#include <sys/stddef.h>
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/condvar.h>
+#include <sys/sysctl.h>
+#include <sys/sx.h>
+#include <sys/unistd.h>
+#include <sys/callout.h>
+#include <sys/malloc.h>
+#include <sys/priv.h>
+#include <sys/rman.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+
+#include <dev/usb/usb_core.h>
+#include <dev/usb/usb_busdma.h>
+#include <dev/usb/usb_process.h>
+#include <dev/usb/usb_util.h>
+
+#include <dev/usb/usb_controller.h>
+#include <dev/usb/usb_bus.h>
+
+#include <dev/usb/controller/ohci.h>
+
+#include <mips/rt305x/rt305xreg.h>
+#include <mips/rt305x/rt305x_sysctlvar.h>
+
+#define OHCI_HC_DEVSTR	"Ralink integrated USB controller"
+
+static device_probe_t ohci_obio_probe;
+static device_attach_t ohci_obio_attach;
+static device_detach_t ohci_obio_detach;
+
+static int
+ohci_obio_probe(device_t self)
+{
+	device_set_desc(self, OHCI_HC_DEVSTR);
+
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+ohci_obio_attach(device_t self)
+{
+	ohci_softc_t *sc = device_get_softc(self);
+	uint32_t reg;
+	int err;
+	int rid;
+
+	/* setup controller interface softc */
+	reg = rt305x_sysctl_get(SYSCTL_SYSCFG1);
+	reg |= SYSCTL_SYSCFG1_USB0_HOST_MODE;
+	rt305x_sysctl_set(SYSCTL_SYSCFG1, reg);
+
+	reg = rt305x_sysctl_get(SYSCTL_CLKCFG1);
+	reg |= SYSCTL_CLKCFG1_UPHY0_CLK_EN;
+#ifdef MT7620
+	reg |= SYSCTL_CLKCFG1_UPHY1_CLK_EN;
+#endif
+	rt305x_sysctl_set(SYSCTL_CLKCFG1, reg);
+
+	reg = rt305x_sysctl_get(SYSCTL_RSTCTRL);
+	reg |= SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1;
+	rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
+	reg &= ~(SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1);
+	DELAY(100000);
+	rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
+	DELAY(100000);
+
+	/* initialise some bus fields */
+	sc->sc_bus.parent = self;
+	sc->sc_bus.devices = sc->sc_devices;
+	sc->sc_bus.devices_max = OHCI_MAX_DEVICES;
+	sc->sc_bus.dma_bits = 32;
+
+	/* get all DMA memory */
+	if (usb_bus_mem_alloc_all(&sc->sc_bus,
+	    USB_GET_DMA_TAG(self), &ohci_iterate_hw_softc)) {
+		printf("No mem\n");
+		return (ENOMEM);
+	}
+
+	rid = 0;
+	sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
+				RF_ACTIVE);
+	if (!sc->sc_io_res) {
+		device_printf(self, "Could not map memory\n");
+		goto error;
+	}
+	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
+	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
+	sc->sc_io_size = rman_get_size(sc->sc_io_res);
+
+	rid = 0;
+	sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
+		RF_SHAREABLE | RF_ACTIVE);
+	if (sc->sc_irq_res == NULL) {
+		device_printf(self, "Could not allocate irq\n");
+		goto error;
+	}
+
+	sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
+	if (!(sc->sc_bus.bdev)) {
+		device_printf(self, "Could not add USB device\n");
+		goto error;
+	}
+	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
+	device_set_desc(sc->sc_bus.bdev, OHCI_HC_DEVSTR);
+
+	sprintf(sc->sc_vendor, "Ralink");
+
+	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
+		NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_intr_hdl);
+	if (err) {
+		device_printf(self, "Could not setup irq, %d\n", err);
+		sc->sc_intr_hdl = NULL;
+		goto error;
+	}
+
+	err = ohci_init(sc);
+	if (!err) {
+		err = device_probe_and_attach(sc->sc_bus.bdev);
+	}
+	if (err) {
+		device_printf(self, "USB init failed err=%d\n", err);
+		goto error;
+	}
+	return (0);
+
+error:
+	ohci_obio_detach(self);
+	return (ENXIO);
+}
+
+static int
+ohci_obio_detach(device_t self)
+{
+	ohci_softc_t *sc = device_get_softc(self);
+	device_t bdev;
+	int err;
+
+	if (sc->sc_bus.bdev) {
+		bdev = sc->sc_bus.bdev;
+		device_detach(bdev);
+		device_delete_child(self, bdev);
+	}
+	/* during module unload there are lots of children leftover */
+	device_delete_children(self);
+
+	if (sc->sc_irq_res && sc->sc_intr_hdl) {
+		/*
+		 * only call ohci_detach() after ohci_init()
+		 */
+		ohci_detach(sc);
+
+		/* Stop OHCI clock */
+		rt305x_sysctl_set(SYSCTL_CLKCFG1, 
+		  rt305x_sysctl_get(SYSCTL_CLKCFG1) & 
+		  ~(SYSCTL_CLKCFG1_UPHY0_CLK_EN
+#ifdef MT7620
+		    | SYSCTL_CLKCFG1_UPHY1_CLK_EN
+#endif
+		));
+
+		err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
+		if (err)
+			device_printf(self, "Could not tear down irq, %d\n",
+				err);
+		sc->sc_intr_hdl = NULL;
+	}
+	if (sc->sc_irq_res) {
+		bus_release_resource(self, SYS_RES_IRQ, 0,
+		    sc->sc_irq_res);
+		sc->sc_irq_res = NULL;
+	}
+	if (sc->sc_io_res) {
+		bus_release_resource(self, SYS_RES_MEMORY, 0,
+		    sc->sc_io_res);
+		sc->sc_io_res = NULL;
+	}
+	usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
+
+	return (0);
+}
+
+static device_method_t ohci_obio_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, ohci_obio_probe),
+	DEVMETHOD(device_attach, ohci_obio_attach),
+	DEVMETHOD(device_detach, ohci_obio_detach),
+	DEVMETHOD(device_suspend, bus_generic_suspend),
+	DEVMETHOD(device_resume, bus_generic_resume),
+	DEVMETHOD(device_shutdown, bus_generic_shutdown),
+
+	DEVMETHOD_END
+};
+
+static driver_t ohci_obio_driver = {
+	.name = "ohci",
+	.methods = ohci_obio_methods,
+	.size = sizeof(ohci_softc_t),
+};
+
+static devclass_t ohci_obio_devclass;
+
+DRIVER_MODULE(ohci, obio, ohci_obio_driver, ohci_obio_devclass, 0, 0);