MFp4:

Add bus attachment for the ohci device on this chip.  The bus and hub
are detected correctly, but the children devices aren't detected
correctly for reasons unknown.

1 files changed, 199 insertions, 0 deletions

diff --git a/sys/arm/at91/ohci_atmelarm.c b/sys/arm/at91/ohci_atmelarm.c
new file mode 100644
index 0000000..9e088b1
--- /dev/null
+++ b/sys/arm/at91/ohci_atmelarm.c
@@ -0,0 +1,199 @@
+/*-
+ * Copyright (c) 2006 M. Warner Losh.  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 ``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 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 <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/queue.h>
+#include <machine/bus.h>
+#include <sys/rman.h>
+#include <machine/resource.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdivar.h>
+#include <dev/usb/usb_mem.h>
+
+#include <dev/usb/ohcireg.h>
+#include <dev/usb/ohcivar.h>
+
+#include <arm/at91/at91_pmcvar.h>
+
+#define MEM_RID	0
+
+static int ohci_atmelarm_attach(device_t dev);
+static int ohci_atmelarm_detach(device_t dev);
+
+struct at91_ohci_softc
+{
+	struct ohci_softc sc_ohci;
+	struct at91_pmc_clock *iclk;
+	struct at91_pmc_clock *fclk;
+};
+
+static int
+ohci_atmelarm_probe(device_t dev)
+{
+	device_set_desc(dev, "AT91 integrated ohci controller");
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+ohci_atmelarm_attach(device_t dev)
+{
+	struct at91_ohci_softc *sc = device_get_softc(dev);
+	int err;
+	int rid;
+
+	
+	sc->iclk = at91_pmc_clock_ref("ohci_clk");
+	sc->fclk = at91_pmc_clock_ref("uhpck");
+
+	rid = MEM_RID;
+	sc->sc_ohci.io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+	    RF_ACTIVE);
+	if (sc->sc_ohci.io_res == NULL) {
+		err = ENOMEM;
+		goto error;
+	}
+	sc->sc_ohci.iot = rman_get_bustag(sc->sc_ohci.io_res);
+	sc->sc_ohci.ioh = rman_get_bushandle(sc->sc_ohci.io_res);
+
+	rid = 0;
+	sc->sc_ohci.irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
+	    RF_ACTIVE);
+	if (sc->sc_ohci.irq_res == NULL) {
+		err = ENOMEM;
+		goto error;
+	}
+	sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usb", -1);
+	if (sc->sc_ohci.sc_bus.bdev == NULL) {
+		err = ENOMEM;
+		goto error;
+	}
+	device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);
+
+	err = bus_setup_intr(dev, sc->sc_ohci.irq_res, INTR_TYPE_BIO, ohci_intr, sc,
+	    &sc->sc_ohci.ih);
+	if (err) {
+		err = ENXIO;
+		goto error;
+	}
+	strlcpy(sc->sc_ohci.sc_vendor, "Atmel", sizeof(sc->sc_ohci.sc_vendor));
+
+	/*
+	 * turn on the clocks from the AT91's point of view.  Keep the unit in reset.
+	 */
+//	bus_space_write_4(sc->sc_ohci.iot, sc->sc_ohci.ioh, OHCI_CONTROL, 0);
+	at91_pmc_clock_enable(sc->iclk);
+	at91_pmc_clock_enable(sc->fclk);
+	bus_space_write_4(sc->sc_ohci.iot, sc->sc_ohci.ioh, OHCI_CONTROL, 0);
+
+	err = ohci_init(&sc->sc_ohci);
+	if (!err) {
+		sc->sc_ohci.sc_flags |= OHCI_SCFLG_DONEINIT;
+		err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);
+	}
+
+error:;
+	if (err) {
+		ohci_atmelarm_detach(dev);
+		return (err);
+	}
+	return (err);
+}
+
+static int
+ohci_atmelarm_detach(device_t dev)
+{
+	struct at91_ohci_softc *sc = device_get_softc(dev);
+
+	if (sc->sc_ohci.sc_flags & OHCI_SCFLG_DONEINIT) {
+		ohci_detach(&sc->sc_ohci, 0);
+		sc->sc_ohci.sc_flags &= ~OHCI_SCFLG_DONEINIT;
+	}
+
+	/*
+	 * 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->sc_ohci.iot, sc->sc_ohci.ioh, OHCI_CONTROL, 0);
+	at91_pmc_clock_disable(sc->fclk);
+	at91_pmc_clock_disable(sc->iclk);
+	at91_pmc_clock_deref(sc->fclk);
+	at91_pmc_clock_deref(sc->iclk);
+
+	if (sc->sc_ohci.ih) {
+		bus_teardown_intr(dev, sc->sc_ohci.irq_res, sc->sc_ohci.ih);
+		sc->sc_ohci.ih = NULL;
+	}
+	if (sc->sc_ohci.sc_bus.bdev) {
+		device_delete_child(dev, sc->sc_ohci.sc_bus.bdev);
+		sc->sc_ohci.sc_bus.bdev = NULL;
+	}
+	if (sc->sc_ohci.irq_res) {
+		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.irq_res);
+		sc->sc_ohci.irq_res = NULL;
+	}
+	if (sc->sc_ohci.io_res) {
+		bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID, sc->sc_ohci.io_res);
+		sc->sc_ohci.io_res = NULL;
+		sc->sc_ohci.iot = 0;
+		sc->sc_ohci.ioh = 0;
+	}
+	return (0);
+}
+
+static device_method_t ohci_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, ohci_atmelarm_probe),
+	DEVMETHOD(device_attach, ohci_atmelarm_attach),
+	DEVMETHOD(device_detach, ohci_atmelarm_detach),
+	DEVMETHOD(device_shutdown, bus_generic_shutdown),
+
+	/* Bus interface */
+	DEVMETHOD(bus_print_child, bus_generic_print_child),
+
+	{0, 0}
+};
+
+static driver_t ohci_driver = {
+	"ohci",
+	ohci_methods,
+	sizeof(struct at91_ohci_softc),
+};
+
+static devclass_t ohci_devclass;
+
+DRIVER_MODULE(ohci, atmelarm, ohci_driver, ohci_devclass, 0, 0);