svn commit: r300068 - in head/sys: arm/allwinner arm/conf dev/usb/controller
Emmanuel Vadot
manu at FreeBSD.org
Tue May 17 17:46:14 UTC 2016
Author: manu
Date: Tue May 17 17:46:12 2016
New Revision: 300068
URL: https://svnweb.freebsd.org/changeset/base/300068
Log:
Add driver for "generic-ohci" as defined by FDT.
If platform support EXT_RESOURCES, clocks and resets are handled out of
the box.
If not driver can be subclassed using the generic_usb interface.
generic_usb name was choosed because at one point I'll add generic-ehci
FDT driver.
Reviewed by: jmcneill, hselasky
Approved by: andrew (mentor)
Differential Revision: https://reviews.freebsd.org/D5481
Added:
head/sys/dev/usb/controller/generic_ohci.c (contents, props changed)
head/sys/dev/usb/controller/generic_usb_if.m (contents, props changed)
Modified:
head/sys/arm/allwinner/files.allwinner
head/sys/arm/conf/A10
head/sys/arm/conf/ALLWINNER
Modified: head/sys/arm/allwinner/files.allwinner
==============================================================================
--- head/sys/arm/allwinner/files.allwinner Tue May 17 17:09:45 2016 (r300067)
+++ head/sys/arm/allwinner/files.allwinner Tue May 17 17:46:12 2016 (r300068)
@@ -24,6 +24,8 @@ arm/allwinner/if_awg.c optional awg
arm/allwinner/if_emac.c optional emac
arm/allwinner/sunxi_dma_if.m standard
dev/iicbus/twsi/a10_twsi.c optional twsi
+dev/usb/controller/generic_ohci.c optional ohci
+dev/usb/controller/generic_usb_if.m optional ohci
arm/allwinner/aw_sid.c standard
arm/allwinner/aw_thermal.c standard
#arm/allwinner/console.c standard
Modified: head/sys/arm/conf/A10
==============================================================================
--- head/sys/arm/conf/A10 Tue May 17 17:09:45 2016 (r300067)
+++ head/sys/arm/conf/A10 Tue May 17 17:46:12 2016 (r300068)
@@ -98,7 +98,7 @@ options USB_DEBUG
#options USB_REQ_DEBUG
#options USB_VERBOSE
#device uhci
-#device ohci
+device ohci
device ehci
device umass
Modified: head/sys/arm/conf/ALLWINNER
==============================================================================
--- head/sys/arm/conf/ALLWINNER Tue May 17 17:09:45 2016 (r300067)
+++ head/sys/arm/conf/ALLWINNER Tue May 17 17:46:12 2016 (r300068)
@@ -113,7 +113,7 @@ options USB_DEBUG
#options USB_REQ_DEBUG
#options USB_VERBOSE
#device uhci
-#device ohci
+device ohci
device ehci
device umass
Added: head/sys/dev/usb/controller/generic_ohci.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/usb/controller/generic_ohci.c Tue May 17 17:46:12 2016 (r300068)
@@ -0,0 +1,308 @@
+/*-
+ * Copyright (c) 2006 M. Warner Losh. All rights reserved.
+ * Copyright (c) 2016 Emmanuel Vadot <manu at freebsd.org>
+ * 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.
+ */
+
+/*
+ * Generic OHCI driver based on AT91 OHCI
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+#include <sys/condvar.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+
+#include <machine/bus.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/ohci.h>
+#include <dev/usb/controller/ohcireg.h>
+
+#ifdef EXT_RESOURCES
+#include <dev/extres/clk/clk.h>
+#include <dev/extres/hwreset/hwreset.h>
+#endif
+
+#include "generic_usb_if.h"
+
+#ifdef EXT_RESOURCES
+struct clk_list {
+ TAILQ_ENTRY(clk_list) next;
+ clk_t clk;
+};
+#endif
+
+struct generic_ohci_softc {
+ ohci_softc_t ohci_sc;
+
+#ifdef EXT_RESOURCES
+ hwreset_t rst;
+ TAILQ_HEAD(, clk_list) clk_list;
+#endif
+};
+
+static int generic_ohci_detach(device_t);
+
+static int
+generic_ohci_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "generic-ohci"))
+ return (ENXIO);
+
+ device_set_desc(dev, "Generic OHCI Controller");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+generic_ohci_attach(device_t dev)
+{
+ struct generic_ohci_softc *sc = device_get_softc(dev);
+ int err, rid;
+#ifdef EXT_RESOURCES
+ int off;
+ struct clk_list *clkp;
+ clk_t clk;
+#endif
+
+ sc->ohci_sc.sc_bus.parent = dev;
+ sc->ohci_sc.sc_bus.devices = sc->ohci_sc.sc_devices;
+ sc->ohci_sc.sc_bus.devices_max = OHCI_MAX_DEVICES;
+ sc->ohci_sc.sc_bus.dma_bits = 32;
+
+ /* get all DMA memory */
+ if (usb_bus_mem_alloc_all(&sc->ohci_sc.sc_bus,
+ USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
+ return (ENOMEM);
+ }
+
+ rid = 0;
+ sc->ohci_sc.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+ &rid, RF_ACTIVE);
+ if (sc->ohci_sc.sc_io_res == 0) {
+ err = ENOMEM;
+ goto error;
+ }
+
+ sc->ohci_sc.sc_io_tag = rman_get_bustag(sc->ohci_sc.sc_io_res);
+ sc->ohci_sc.sc_io_hdl = rman_get_bushandle(sc->ohci_sc.sc_io_res);
+ sc->ohci_sc.sc_io_size = rman_get_size(sc->ohci_sc.sc_io_res);
+
+ rid = 0;
+ sc->ohci_sc.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
+ RF_ACTIVE);
+ if (sc->ohci_sc.sc_irq_res == 0) {
+ err = ENXIO;
+ goto error;
+ }
+ sc->ohci_sc.sc_bus.bdev = device_add_child(dev, "usbus", -1);
+ if (sc->ohci_sc.sc_bus.bdev == 0) {
+ err = ENXIO;
+ goto error;
+ }
+ device_set_ivars(sc->ohci_sc.sc_bus.bdev, &sc->ohci_sc.sc_bus);
+
+ strlcpy(sc->ohci_sc.sc_vendor, "Generic",
+ sizeof(sc->ohci_sc.sc_vendor));
+
+ err = bus_setup_intr(dev, sc->ohci_sc.sc_irq_res,
+ INTR_TYPE_BIO | INTR_MPSAFE, NULL,
+ (driver_intr_t *)ohci_interrupt, sc, &sc->ohci_sc.sc_intr_hdl);
+ if (err) {
+ sc->ohci_sc.sc_intr_hdl = NULL;
+ goto error;
+ }
+
+#ifdef EXT_RESOURCES
+ TAILQ_INIT(&sc->clk_list);
+ /* Enable clock */
+ for (off = 0; clk_get_by_ofw_index(dev, off, &clk) == 0; off++) {
+ err = clk_enable(clk);
+ if (err != 0) {
+ device_printf(dev, "Could not enable clock %s\n",
+ clk_get_name(clk));
+ goto error;
+ }
+ clkp = malloc(sizeof(clkp), M_DEVBUF, M_WAITOK | M_ZERO);
+ clkp->clk = clk;
+ TAILQ_INSERT_TAIL(&sc->clk_list, clkp, next);
+ }
+
+ /* De-assert reset */
+ if (hwreset_get_by_ofw_idx(dev, 0, &sc->rst) == 0) {
+ err = hwreset_deassert(sc->rst);
+ if (err != 0) {
+ device_printf(dev, "Could not de-assert reset %d\n",
+ off);
+ goto error;
+ }
+ }
+#endif
+
+ if (GENERIC_USB_INIT(dev) != 0) {
+ err = ENXIO;
+ goto error;
+ }
+
+ err = ohci_init(&sc->ohci_sc);
+ if (err == 0)
+ err = device_probe_and_attach(sc->ohci_sc.sc_bus.bdev);
+ if (err)
+ goto error;
+
+ return (0);
+error:
+ generic_ohci_detach(dev);
+ return (err);
+}
+
+static int
+generic_ohci_detach(device_t dev)
+{
+ struct generic_ohci_softc *sc = device_get_softc(dev);
+ device_t bdev;
+ int err;
+#ifdef EXT_RESOURCES
+ struct clk_list *clk, *clk_tmp;
+#endif
+
+ if (sc->ohci_sc.sc_bus.bdev) {
+ bdev = sc->ohci_sc.sc_bus.bdev;
+ device_detach(bdev);
+ device_delete_child(dev, bdev);
+ }
+
+ /* during module unload there are lots of children leftover */
+ device_delete_children(dev);
+
+ /*
+ * Put the controller into reset, then disable clocks and do
+ * the MI tear down. We have to disable the clocks/hardware
+ * after we do the rest of the teardown. We also disable the
+ * clocks in the opposite order we acquire them, but that
+ * doesn't seem to be absolutely necessary. We free up the
+ * clocks after we disable them, so the system could, in
+ * theory, reuse them.
+ */
+ bus_space_write_4(sc->ohci_sc.sc_io_tag, sc->ohci_sc.sc_io_hdl,
+ OHCI_CONTROL, 0);
+
+ if (sc->ohci_sc.sc_irq_res && sc->ohci_sc.sc_intr_hdl) {
+ /*
+ * only call ohci_detach() after ohci_init()
+ */
+ ohci_detach(&sc->ohci_sc);
+
+ err = bus_teardown_intr(dev, sc->ohci_sc.sc_irq_res,
+ sc->ohci_sc.sc_intr_hdl);
+ sc->ohci_sc.sc_intr_hdl = NULL;
+ }
+ if (sc->ohci_sc.sc_irq_res) {
+ bus_release_resource(dev, SYS_RES_IRQ, 0,
+ sc->ohci_sc.sc_irq_res);
+ sc->ohci_sc.sc_irq_res = NULL;
+ }
+ if (sc->ohci_sc.sc_io_res) {
+ bus_release_resource(dev, SYS_RES_MEMORY, 0,
+ sc->ohci_sc.sc_io_res);
+ sc->ohci_sc.sc_io_res = NULL;
+ }
+ usb_bus_mem_free_all(&sc->ohci_sc.sc_bus, &ohci_iterate_hw_softc);
+
+#ifdef EXT_RESOURCES
+ /* Disable clock */
+ TAILQ_FOREACH_SAFE(clk, &sc->clk_list, next, clk_tmp) {
+ err = clk_disable(clk->clk);
+ if (err != 0)
+ device_printf(dev, "Could not disable clock %s\n",
+ clk_get_name(clk->clk));
+ err = clk_release(clk->clk);
+ if (err != 0)
+ device_printf(dev, "Could not release clock %s\n",
+ clk_get_name(clk->clk));
+ TAILQ_REMOVE(&sc->clk_list, clk, next);
+ free(clk, M_DEVBUF);
+ }
+
+ /* De-assert reset */
+ if (sc->rst) {
+ err = hwreset_assert(sc->rst);
+ if (err != 0)
+ device_printf(dev, "Could not assert reset\n");
+ hwreset_release(sc->rst);
+ }
+#endif
+
+ if (GENERIC_USB_DEINIT(dev) != 0)
+ return (ENXIO);
+
+ return (0);
+}
+
+static device_method_t generic_ohci_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, generic_ohci_probe),
+ DEVMETHOD(device_attach, generic_ohci_attach),
+ DEVMETHOD(device_detach, generic_ohci_detach),
+
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+
+ DEVMETHOD_END
+};
+
+driver_t generic_ohci_driver = {
+ .name = "ohci",
+ .methods = generic_ohci_methods,
+ .size = sizeof(struct generic_ohci_softc),
+};
+
+static devclass_t generic_ohci_devclass;
+
+DRIVER_MODULE(ohci, simplebus, generic_ohci_driver,
+ generic_ohci_devclass, 0, 0);
+MODULE_DEPEND(ohci, usb, 1, 1, 1);
Added: head/sys/dev/usb/controller/generic_usb_if.m
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/usb/controller/generic_usb_if.m Tue May 17 17:46:12 2016 (r300068)
@@ -0,0 +1,60 @@
+#-
+# Copyright (c) 2016 Emmanuel Vadot <manu at freebsd.org>
+# 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.
+#
+# $FreeBSD$
+#
+
+INTERFACE generic_usb;
+
+CODE {
+ static int
+ generic_usb_default_init(device_t dev)
+ {
+ return (0);
+ }
+
+ static int
+ generic_usb_default_deinit(device_t dev)
+ {
+ return (0);
+ }
+};
+
+HEADER {
+};
+
+#
+# Initialize the SoC bits
+#
+METHOD int init {
+ device_t dev;
+} DEFAULT generic_usb_default_init;
+
+#
+# Deinitialize the SoC bits
+#
+METHOD int deinit {
+ device_t dev;
+} DEFAULT generic_usb_default_deinit;
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