Author: ray
Date: Thu Nov 8 13:41:42 2012
New Revision: 242769
URL: http://svnweb.freebsd.org/changeset/base/242769
Log:
Add binding for EHCI inside i.MX515 USB core.
Added:
projects/efika_mx/sys/dev/usb/controller/ehci_imx.c
Added: projects/efika_mx/sys/dev/usb/controller/ehci_imx.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ projects/efika_mx/sys/dev/usb/controller/ehci_imx.c Thu Nov 8 13:41:42 2012 (r242769)
@@ -0,0 +1,294 @@
+/*-
+ * Copyright (c) 2010-2012 Semihalf
+ * Copyright (c) 2012 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * Portions of this software were developed by Oleksandr Rybalko
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * 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: projects/efika_mx/sys/dev/usb/controller/ehci_fsl.c 236120 2012-05-26 21:05:11Z raj $");
+
+#include "opt_bus.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/lockmgr.h>
+#include <sys/condvar.h>
+#include <sys/rman.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.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 <dev/usb/controller/ehcireg.h>
+
+#include <machine/bus.h>
+#include <machine/clock.h>
+#include <machine/resource.h>
+
+#include "opt_platform.h"
+
+/* Forward declarations */
+static int fsl_ehci_attach(device_t self);
+static int fsl_ehci_detach(device_t self);
+static int fsl_ehci_probe(device_t self);
+
+static device_method_t ehci_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, fsl_ehci_probe),
+ DEVMETHOD(device_attach, fsl_ehci_attach),
+ DEVMETHOD(device_detach, fsl_ehci_detach),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+
+ /* Bus interface */
+ DEVMETHOD(bus_print_child, bus_generic_print_child),
+
+ { 0, 0 }
+};
+
+/* kobj_class definition */
+static driver_t ehci_driver = {
+ "ehci",
+ ehci_methods,
+ sizeof(struct ehci_softc)
+};
+
+static devclass_t ehci_devclass;
+
+DRIVER_MODULE(ehci, simplebus, ehci_driver, ehci_devclass, 0, 0);
+MODULE_DEPEND(ehci, usb, 1, 1, 1);
+
+/*
+ * Defines location of first EHCI.
+ */
+/* TODO: enable EHCI2 EHCI3, make driver for OTG */
+#define FSL_EHCI_REG_OFF 0x300
+#define FSL_EHCI_REG_SIZE 0x100
+
+/*
+ * Public methods
+ */
+static int
+fsl_ehci_probe(device_t dev)
+{
+
+ if (ofw_bus_is_compatible(dev, "fsl,usb-4core") == 0)
+ return (ENXIO);
+
+ device_set_desc(dev, "Freescale integrated USB controller");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+fsl_ehci_attach(device_t self)
+{
+ ehci_softc_t *sc;
+ int rid;
+ int err;
+ bus_space_handle_t ioh;
+ bus_space_tag_t iot;
+
+ sc = device_get_softc(self);
+ rid = 0;
+
+ sc->sc_bus.parent = self;
+ sc->sc_bus.devices = sc->sc_devices;
+ sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
+
+ if (usb_bus_mem_alloc_all(&sc->sc_bus,
+ USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc))
+ return (ENOMEM);
+
+ /* Allocate io resource for EHCI */
+ sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (sc->sc_io_res == NULL) {
+ err = fsl_ehci_detach(self);
+ if (err) {
+ device_printf(self,
+ "Detach of the driver failed with error %d\n",
+ err);
+ }
+ return (ENXIO);
+ }
+ iot = rman_get_bustag(sc->sc_io_res);
+
+ /*
+ * Set handle to USB related registers subregion used by generic
+ * EHCI driver
+ */
+ ioh = rman_get_bushandle(sc->sc_io_res);
+
+ err = bus_space_subregion(iot, ioh, FSL_EHCI_REG_OFF, FSL_EHCI_REG_SIZE,
+ &sc->sc_io_hdl);
+ if (err != 0) {
+ err = fsl_ehci_detach(self);
+ if (err) {
+ device_printf(self,
+ "Detach of the driver failed with error %d\n",
+ err);
+ }
+ return (ENXIO);
+ }
+
+ sc->sc_io_tag = iot;
+
+ /* Allocate irq */
+ sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
+ RF_ACTIVE);
+ if (sc->sc_irq_res == NULL) {
+ err = fsl_ehci_detach(self);
+ if (err) {
+ device_printf(self,
+ "Detach of the driver failed with error %d\n",
+ err);
+ }
+ return (ENXIO);
+ }
+
+ /* Setup interrupt handler */
+ err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO,
+ 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;
+ err = fsl_ehci_detach(self);
+ if (err) {
+ device_printf(self,
+ "Detach of the driver failed with error %d\n",
+ err);
+ }
+ return (ENXIO);
+ }
+
+ /* Add USB device */
+ sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
+ if (!sc->sc_bus.bdev) {
+ device_printf(self, "Could not add USB device\n");
+ err = fsl_ehci_detach(self);
+ if (err) {
+ device_printf(self,
+ "Detach of the driver failed with error %d\n",
+ err);
+ }
+ return (ENOMEM);
+ }
+ device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
+
+ sc->sc_id_vendor = 0x1234;
+ strlcpy(sc->sc_vendor, "Freescale", sizeof(sc->sc_vendor));
+
+ /* Set flags */
+ sc->sc_flags |= EHCI_SCFLG_DONTRESET | EHCI_SCFLG_NORESTERM;
+
+ err = ehci_init(sc);
+ if (!err) {
+ sc->sc_flags |= EHCI_SCFLG_DONEINIT;
+ err = device_probe_and_attach(sc->sc_bus.bdev);
+ }
+
+ if (err) {
+ device_printf(self, "USB init failed err=%d\n", err);
+ err = fsl_ehci_detach(self);
+ if (err) {
+ device_printf(self,
+ "Detach of the driver failed with error %d\n",
+ err);
+ }
+ return (EIO);
+ }
+
+ return (0);
+}
+
+static int
+fsl_ehci_detach(device_t self)
+{
+
+ int err;
+ ehci_softc_t *sc;
+
+ sc = device_get_softc(self);
+ /*
+ * only call ehci_detach() after ehci_init()
+ */
+ if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
+ ehci_detach(sc);
+ sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
+ }
+
+ /* Disable interrupts that might have been switched on in ehci_init */
+ if (sc->sc_io_tag && sc->sc_io_hdl)
+ bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, EHCI_USBINTR, 0);
+
+ if (sc->sc_irq_res && sc->sc_intr_hdl) {
+ 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);
+ return (err);
+ }
+ sc->sc_intr_hdl = NULL;
+ }
+
+ if (sc->sc_bus.bdev) {
+ device_delete_child(self, sc->sc_bus.bdev);
+ sc->sc_bus.bdev = NULL;
+ }
+
+ /* During module unload there are lots of children leftover */
+ device_delete_children(self);
+
+ 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;
+ sc->sc_io_tag = 0;
+ sc->sc_io_hdl = 0;
+ }
+
+ return (0);
+}