Author: raj
Date: Sat May 26 21:05:11 2012
New Revision: 236120
URL: http://svn.freebsd.org/changeset/base/236120
Log:
Import EHCI attachment driver for Freescale integrated controller.
Obtained from: Freescale, Semihalf.
Written by: Michal Dubiel
Added:
head/sys/dev/usb/controller/ehci_fsl.c (contents, props changed)
Added: head/sys/dev/usb/controller/ehci_fsl.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/usb/controller/ehci_fsl.c Sat May 26 21:05:11 2012
(r236120)
@@ -0,0 +1,423 @@
+/*-
+ * Copyright (c) 2010-2012 Semihalf
+ * 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#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 <powerpc/include/tlb.h>
+
+#include "opt_platform.h"
+
+/*
+ * Register the driver
+ */
+/* 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);
+
+/*
+ * Private defines
+ */
+#define FSL_EHCI_REG_OFF 0x100
+#define FSL_EHCI_REG_SIZE 0x300
+
+/*
+ * Internal interface registers' offsets.
+ * Offsets from 0x000 ehci dev space, big-endian access.
+ */
+enum internal_reg {
+ SNOOP1 = 0x400,
+ SNOOP2 = 0x404,
+ AGE_CNT_THRESH = 0x408,
+ SI_CTRL = 0x410,
+ CONTROL = 0x500
+};
+
+/* CONTROL register bit flags */
+enum control_flags {
+ USB_EN = 0x00000004,
+ UTMI_PHY_EN = 0x00000200,
+ ULPI_INT_EN = 0x00000001
+};
+
+/* SI_CTRL register bit flags */
+enum si_ctrl_flags {
+ FETCH_32 = 1,
+ FETCH_64 = 0
+};
+
+#define SNOOP_RANGE_2GB 0x1E
+
+/*
+ * Operational registers' offsets.
+ * Offsets from USBCMD register, little-endian access.
+ */
+enum special_op_reg {
+ USBMODE = 0x0A8,
+ PORTSC = 0x084,
+ ULPI_VIEWPORT = 0x70
+};
+
+/* USBMODE register bit flags */
+enum usbmode_flags {
+ HOST_MODE = 0x3,
+ DEVICE_MODE = 0x2
+};
+
+#define PORT_POWER_MASK 0x00001000
+
+/*
+ * Private methods
+ */
+
+static void
+set_to_host_mode(ehci_softc_t *sc)
+{
+ int tmp;
+
+ tmp = bus_space_read_4(sc->sc_io_tag, sc->sc_io_hdl, USBMODE);
+ bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, USBMODE, tmp |
HOST_MODE);
+}
+
+static void
+enable_usb(device_t dev, bus_space_tag_t iot, bus_space_handle_t ioh)
+{
+ int tmp;
+ phandle_t node;
+ char *phy_type;
+
+ phy_type = NULL;
+ tmp = bus_space_read_4(iot, ioh, CONTROL) | USB_EN;
+
+ node = ofw_bus_get_node(dev);
+ if ((node != 0) &&
+ (OF_getprop_alloc(node, "phy_type", 1, (void **)&phy_type) > 0)) {
+ if (strncasecmp(phy_type, "utmi", strlen("utmi")) == 0)
+ tmp |= UTMI_PHY_EN;
+ free(phy_type, M_OFWPROP);
+ }
+ bus_space_write_4(iot, ioh, CONTROL, tmp);
+}
+
+static void
+set_32b_prefetch(bus_space_tag_t iot, bus_space_handle_t ioh)
+{
+
+ bus_space_write_4(iot, ioh, SI_CTRL, FETCH_32);
+}
+
+static void
+set_snooping(bus_space_tag_t iot, bus_space_handle_t ioh)
+{
+
+ bus_space_write_4(iot, ioh, SNOOP1, SNOOP_RANGE_2GB);
+ bus_space_write_4(iot, ioh, SNOOP2, 0x80000000 | SNOOP_RANGE_2GB);
+}
+
+static void
+clear_port_power(ehci_softc_t *sc)
+{
+ int tmp;
+
+ tmp = bus_space_read_4(sc->sc_io_tag, sc->sc_io_hdl, PORTSC);
+ bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, PORTSC, tmp &
~PORT_POWER_MASK);
+}
+
+/*
+ * Public methods
+ */
+static int
+fsl_ehci_probe(device_t dev)
+{
+
+ if (((ofw_bus_is_compatible(dev, "fsl-usb2-dr")) == 0) &&
+ ((ofw_bus_is_compatible(dev, "fsl-usb2-mph")) == 0))
+ return (ENXIO);
+
+ device_set_desc(dev, "Freescale integrated EHCI 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);
+ }
+
+ /* Set little-endian tag for use by the generic EHCI driver */
+ sc->sc_io_tag = &bs_le_tag;
+
+ /* 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));
+
+ /* Enable USB */
+ err = ehci_reset(sc);
+ if (err) {
+ device_printf(self, "Could not reset the controller\n");
+ err = fsl_ehci_detach(self);
+ if (err) {
+ device_printf(self,
+ "Detach of the driver failed with error %d\n",
+ err);
+ }
+ return (ENXIO);
+ }
+
+ enable_usb(self, iot, ioh);
+ set_snooping(iot, ioh);
+ set_to_host_mode(sc);
+ set_32b_prefetch(iot, ioh);
+
+ /*
+ * If usb subsystem is enabled in U-Boot, port power has to be turned
+ * off to allow proper discovery of devices during boot up.
+ */
+ clear_port_power(sc);
+
+ /* 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);
+}
+
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