diff options
Diffstat (limited to 'sys/dev/usb/controller/at91dci_atmelarm.c')
| -rw-r--r-- | sys/dev/usb/controller/at91dci_atmelarm.c | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/sys/dev/usb/controller/at91dci_atmelarm.c b/sys/dev/usb/controller/at91dci_atmelarm.c new file mode 100644 index 0000000..71d2937 --- /dev/null +++ b/sys/dev/usb/controller/at91dci_atmelarm.c @@ -0,0 +1,347 @@ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/*- + * Copyright (c) 2007-2008 Hans Petter Selasky. 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 <dev/usb/usb_mfunc.h> +#include <dev/usb/usb_defs.h> +#include <dev/usb/usb.h> + +#include <dev/usb/usb_core.h> +#include <dev/usb/usb_busdma.h> +#include <dev/usb/usb_process.h> +#include <dev/usb/usb_sw_transfer.h> +#include <dev/usb/usb_util.h> + +#include <dev/usb/usb_controller.h> +#include <dev/usb/usb_bus.h> +#include <dev/usb/controller/at91dci.h> + +#include <sys/rman.h> + +#include <arm/at91/at91_pmcvar.h> +#include <arm/at91/at91rm92reg.h> +#include <arm/at91/at91_pio_rm9200.h> +#include <arm/at91/at91_piovar.h> + +#define MEM_RID 0 + +/* Pin Definitions - do they belong here or somewhere else ? */ + +#define VBUS_MASK AT91C_PIO_PB24 +#define VBUS_BASE AT91RM92_PIOB_BASE + +#define PULLUP_MASK AT91C_PIO_PB22 +#define PULLUP_BASE AT91RM92_PIOB_BASE + +static device_probe_t at91_udp_probe; +static device_attach_t at91_udp_attach; +static device_detach_t at91_udp_detach; +static device_shutdown_t at91_udp_shutdown; + +struct at91_udp_softc { + struct at91dci_softc sc_dci; /* must be first */ + struct at91_pmc_clock *sc_iclk; + struct at91_pmc_clock *sc_fclk; + struct resource *sc_vbus_irq_res; + void *sc_vbus_intr_hdl; +}; + +static void +at91_vbus_poll(struct at91_udp_softc *sc) +{ + uint32_t temp; + uint8_t vbus_val; + + /* XXX temporary clear interrupts here */ + + temp = at91_pio_gpio_clear_interrupt(VBUS_BASE); + + /* just forward it */ + + vbus_val = at91_pio_gpio_get(VBUS_BASE, VBUS_MASK); + at91dci_vbus_interrupt(&sc->sc_dci, vbus_val); +} + +static void +at91_udp_clocks_on(void *arg) +{ + struct at91_udp_softc *sc = arg; + + at91_pmc_clock_enable(sc->sc_iclk); + at91_pmc_clock_enable(sc->sc_fclk); +} + +static void +at91_udp_clocks_off(void *arg) +{ + struct at91_udp_softc *sc = arg; + + at91_pmc_clock_disable(sc->sc_fclk); + at91_pmc_clock_disable(sc->sc_iclk); +} + +static void +at91_udp_pull_up(void *arg) +{ + at91_pio_gpio_set(PULLUP_BASE, PULLUP_MASK); +} + +static void +at91_udp_pull_down(void *arg) +{ + at91_pio_gpio_clear(PULLUP_BASE, PULLUP_MASK); +} + +static int +at91_udp_probe(device_t dev) +{ + device_set_desc(dev, "AT91 integrated AT91_UDP controller"); + return (0); +} + +static int +at91_udp_attach(device_t dev) +{ + struct at91_udp_softc *sc = device_get_softc(dev); + int err; + int rid; + + /* setup AT9100 USB device controller interface softc */ + + sc->sc_dci.sc_clocks_on = &at91_udp_clocks_on; + sc->sc_dci.sc_clocks_off = &at91_udp_clocks_off; + sc->sc_dci.sc_clocks_arg = sc; + sc->sc_dci.sc_pull_up = &at91_udp_pull_up; + sc->sc_dci.sc_pull_down = &at91_udp_pull_down; + sc->sc_dci.sc_pull_arg = sc; + + /* initialise some bus fields */ + sc->sc_dci.sc_bus.parent = dev; + sc->sc_dci.sc_bus.devices = sc->sc_dci.sc_devices; + sc->sc_dci.sc_bus.devices_max = AT91_MAX_DEVICES; + + /* get all DMA memory */ + if (usb2_bus_mem_alloc_all(&sc->sc_dci.sc_bus, + USB_GET_DMA_TAG(dev), NULL)) { + return (ENOMEM); + } + /* + * configure VBUS input pin, enable deglitch and enable + * interrupt : + */ + at91_pio_use_gpio(VBUS_BASE, VBUS_MASK); + at91_pio_gpio_input(VBUS_BASE, VBUS_MASK); + at91_pio_gpio_set_deglitch(VBUS_BASE, VBUS_MASK, 1); + at91_pio_gpio_set_interrupt(VBUS_BASE, VBUS_MASK, 1); + + /* + * configure PULLUP output pin : + */ + at91_pio_use_gpio(PULLUP_BASE, PULLUP_MASK); + at91_pio_gpio_output(PULLUP_BASE, PULLUP_MASK, 0); + + at91_udp_pull_down(sc); + + /* wait 10ms for pulldown to stabilise */ + usb2_pause_mtx(NULL, hz / 100); + + sc->sc_iclk = at91_pmc_clock_ref("udc_clk"); + sc->sc_fclk = at91_pmc_clock_ref("udpck"); + + rid = MEM_RID; + sc->sc_dci.sc_io_res = + bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); + + if (!(sc->sc_dci.sc_io_res)) { + err = ENOMEM; + goto error; + } + sc->sc_dci.sc_io_tag = rman_get_bustag(sc->sc_dci.sc_io_res); + sc->sc_dci.sc_io_hdl = rman_get_bushandle(sc->sc_dci.sc_io_res); + sc->sc_dci.sc_io_size = rman_get_size(sc->sc_dci.sc_io_res); + + rid = 0; + sc->sc_dci.sc_irq_res = + bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); + if (!(sc->sc_dci.sc_irq_res)) { + goto error; + } + rid = 1; + sc->sc_vbus_irq_res = + bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); + if (!(sc->sc_vbus_irq_res)) { + goto error; + } + sc->sc_dci.sc_bus.bdev = device_add_child(dev, "usbus", -1); + if (!(sc->sc_dci.sc_bus.bdev)) { + goto error; + } + device_set_ivars(sc->sc_dci.sc_bus.bdev, &sc->sc_dci.sc_bus); + +#if (__FreeBSD_version >= 700031) + err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, + NULL, (void *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl); +#else + err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, + (void *)at91dci_interrupt, sc, &sc->sc_dci.sc_intr_hdl); +#endif + if (err) { + sc->sc_dci.sc_intr_hdl = NULL; + goto error; + } +#if (__FreeBSD_version >= 700031) + err = bus_setup_intr(dev, sc->sc_vbus_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, + NULL, (void *)at91_vbus_poll, sc, &sc->sc_vbus_intr_hdl); +#else + err = bus_setup_intr(dev, sc->sc_vbus_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, + (void *)at91_vbus_poll, sc, &sc->sc_vbus_intr_hdl); +#endif + if (err) { + sc->sc_vbus_intr_hdl = NULL; + goto error; + } + err = at91dci_init(&sc->sc_dci); + if (!err) { + err = device_probe_and_attach(sc->sc_dci.sc_bus.bdev); + } + if (err) { + goto error; + } else { + /* poll VBUS one time */ + at91_vbus_poll(sc); + } + return (0); + +error: + at91_udp_detach(dev); + return (ENXIO); +} + +static int +at91_udp_detach(device_t dev) +{ + struct at91_udp_softc *sc = device_get_softc(dev); + device_t bdev; + int err; + + if (sc->sc_dci.sc_bus.bdev) { + bdev = sc->sc_dci.sc_bus.bdev; + device_detach(bdev); + device_delete_child(dev, bdev); + } + /* during module unload there are lots of children leftover */ + device_delete_all_children(dev); + + /* disable Transceiver */ + AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_TXVC, AT91_UDP_TXVC_DIS); + + /* disable and clear all interrupts */ + AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_IDR, 0xFFFFFFFF); + AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_ICR, 0xFFFFFFFF); + + /* disable VBUS interrupt */ + at91_pio_gpio_set_interrupt(VBUS_BASE, VBUS_MASK, 0); + + if (sc->sc_vbus_irq_res && sc->sc_vbus_intr_hdl) { + err = bus_teardown_intr(dev, sc->sc_vbus_irq_res, + sc->sc_vbus_intr_hdl); + sc->sc_vbus_intr_hdl = NULL; + } + if (sc->sc_vbus_irq_res) { + bus_release_resource(dev, SYS_RES_IRQ, 1, + sc->sc_vbus_irq_res); + sc->sc_vbus_irq_res = NULL; + } + if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) { + /* + * only call at91_udp_uninit() after at91_udp_init() + */ + at91dci_uninit(&sc->sc_dci); + + err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res, + sc->sc_dci.sc_intr_hdl); + sc->sc_dci.sc_intr_hdl = NULL; + } + if (sc->sc_dci.sc_irq_res) { + bus_release_resource(dev, SYS_RES_IRQ, 0, + sc->sc_dci.sc_irq_res); + sc->sc_dci.sc_irq_res = NULL; + } + if (sc->sc_dci.sc_io_res) { + bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID, + sc->sc_dci.sc_io_res); + sc->sc_dci.sc_io_res = NULL; + } + usb2_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL); + + /* disable clocks */ + at91_pmc_clock_disable(sc->sc_iclk); + at91_pmc_clock_disable(sc->sc_fclk); + at91_pmc_clock_deref(sc->sc_fclk); + at91_pmc_clock_deref(sc->sc_iclk); + + return (0); +} + +static int +at91_udp_shutdown(device_t dev) +{ + struct at91_udp_softc *sc = device_get_softc(dev); + int err; + + err = bus_generic_shutdown(dev); + if (err) + return (err); + + at91dci_uninit(&sc->sc_dci); + + return (0); +} + +static device_method_t at91_udp_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, at91_udp_probe), + DEVMETHOD(device_attach, at91_udp_attach), + DEVMETHOD(device_detach, at91_udp_detach), + DEVMETHOD(device_shutdown, at91_udp_shutdown), + + /* Bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + + {0, 0} +}; + +static driver_t at91_udp_driver = { + "at91_udp", + at91_udp_methods, + sizeof(struct at91_udp_softc), +}; + +static devclass_t at91_udp_devclass; + +DRIVER_MODULE(at91_udp, atmelarm, at91_udp_driver, at91_udp_devclass, 0, 0); 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