diff options
author | imp <imp@FreeBSD.org> | 2006-03-18 01:45:29 +0000 |
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committer | imp <imp@FreeBSD.org> | 2006-03-18 01:45:29 +0000 |
commit | ebdf4c5109f42bb8c17794618cab6bcdd373ed7f (patch) | |
tree | 7da4e895a8f02bfa8ed484e4dfb749bd6a1842a2 | |
parent | a98bdc08136168fd66ba2c94e07b239be22cfee1 (diff) | |
download | FreeBSD-src-ebdf4c5109f42bb8c17794618cab6bcdd373ed7f.zip FreeBSD-src-ebdf4c5109f42bb8c17794618cab6bcdd373ed7f.tar.gz |
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.
-rw-r--r-- | sys/arm/at91/ohci_atmelarm.c | 199 |
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); |