db4300da10
- Rework how we allocate and free USB host channels, so that we only allocate a channel if there is a real packet going out on the USB cable. - Use BULK type for control data and status, due to instabilities in the HW it appears. - Split FIFO TX levels into one for the periodic FIFO and one for the non-periodic FIFO. - Use correct HFNUM mask when scheduling host transactions. The HFNUM register does not count the full 16-bit range. - Correct START/COMPLETION slot for TT transactions. For INTERRUPT and ISOCHRONOUS type transactions the hardware always respects the ODDFRM bit, which means we need to allocate multiple host channels when processing such endpoints, to not miss any so-called complete split opportunities. - When doing ISOCHRONOUS OUT transfers through a TT send all data payload in a single ALL-burst. This deacreases the likelyhood for isochronous data underruns. - Fixed unbalanced unlock in case of "dwc_otg_init_fifo()" failure. - Increase interrupt priority. MFC after: 2 weeks
234 lines
6.3 KiB
C
234 lines
6.3 KiB
C
/*-
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* Copyright (c) 2012 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/unistd.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <sys/rman.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usb_core.h>
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#include <dev/usb/usb_busdma.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/usb_util.h>
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#include <dev/usb/usb_controller.h>
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#include <dev/usb/usb_bus.h>
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#include <dev/usb/controller/dwc_otg.h>
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static device_probe_t dwc_otg_probe;
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static device_attach_t dwc_otg_attach;
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static device_detach_t dwc_otg_detach;
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struct dwc_otg_super_softc {
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struct dwc_otg_softc sc_otg; /* must be first */
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};
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static int
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dwc_otg_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "synopsys,designware-hs-otg2"))
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return (ENXIO);
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device_set_desc(dev, "DWC OTG 2.0 integrated USB controller");
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return (0);
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}
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static int
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dwc_otg_attach(device_t dev)
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{
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struct dwc_otg_super_softc *sc = device_get_softc(dev);
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char usb_mode[24];
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int err;
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int rid;
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/* initialise some bus fields */
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sc->sc_otg.sc_bus.parent = dev;
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sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices;
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sc->sc_otg.sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
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/* get USB mode, if any */
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if (OF_getprop(ofw_bus_get_node(dev), "dr_mode",
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&usb_mode, sizeof(usb_mode)) > 0) {
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/* ensure proper zero termination */
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usb_mode[sizeof(usb_mode) - 1] = 0;
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if (strcasecmp(usb_mode, "host") == 0)
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sc->sc_otg.sc_mode = DWC_MODE_HOST;
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else if (strcasecmp(usb_mode, "peripheral") == 0)
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sc->sc_otg.sc_mode = DWC_MODE_DEVICE;
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else if (strcasecmp(usb_mode, "otg") != 0) {
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device_printf(dev, "Invalid FDT dr_mode: %s\n",
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usb_mode);
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}
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}
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/* get all DMA memory */
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if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus,
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USB_GET_DMA_TAG(dev), NULL)) {
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return (ENOMEM);
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}
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rid = 0;
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sc->sc_otg.sc_io_res =
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bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
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if (!(sc->sc_otg.sc_io_res)) {
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err = ENOMEM;
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goto error;
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}
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sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res);
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rid = 0;
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sc->sc_otg.sc_irq_res =
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bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
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if (sc->sc_otg.sc_irq_res == NULL)
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goto error;
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sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
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if (sc->sc_otg.sc_bus.bdev == NULL)
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goto error;
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device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus);
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err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
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NULL, (driver_intr_t *)dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
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if (err) {
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sc->sc_otg.sc_intr_hdl = NULL;
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goto error;
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}
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err = dwc_otg_init(&sc->sc_otg);
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if (err == 0) {
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err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
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}
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if (err)
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goto error;
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return (0);
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error:
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dwc_otg_detach(dev);
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return (ENXIO);
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}
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static int
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dwc_otg_detach(device_t dev)
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{
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struct dwc_otg_super_softc *sc = device_get_softc(dev);
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device_t bdev;
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int err;
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if (sc->sc_otg.sc_bus.bdev) {
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bdev = sc->sc_otg.sc_bus.bdev;
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device_detach(bdev);
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device_delete_child(dev, bdev);
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}
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/* during module unload there are lots of children leftover */
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device_delete_children(dev);
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if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) {
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/*
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* only call dwc_otg_uninit() after dwc_otg_init()
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*/
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dwc_otg_uninit(&sc->sc_otg);
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err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res,
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sc->sc_otg.sc_intr_hdl);
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sc->sc_otg.sc_intr_hdl = NULL;
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}
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/* free IRQ channel, if any */
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if (sc->sc_otg.sc_irq_res) {
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bus_release_resource(dev, SYS_RES_IRQ, 0,
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sc->sc_otg.sc_irq_res);
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sc->sc_otg.sc_irq_res = NULL;
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}
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/* free memory resource, if any */
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if (sc->sc_otg.sc_io_res) {
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bus_release_resource(dev, SYS_RES_MEMORY, 0,
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sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_res = NULL;
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}
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usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL);
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return (0);
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}
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static device_method_t dwc_otg_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dwc_otg_probe),
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DEVMETHOD(device_attach, dwc_otg_attach),
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DEVMETHOD(device_detach, dwc_otg_detach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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static driver_t dwc_otg_driver = {
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.name = "dwcotg",
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.methods = dwc_otg_methods,
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.size = sizeof(struct dwc_otg_super_softc),
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};
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static devclass_t dwc_otg_devclass;
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DRIVER_MODULE(dwcotg, simplebus, dwc_otg_driver, dwc_otg_devclass, 0, 0);
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MODULE_DEPEND(dwcotg, usb, 1, 1, 1);
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