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Differential D25203 Diff 72900 sys/dev/usb/controller/dwc_otg_fdt.c

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sys/dev/usb/controller/dwc_otg_fdt.c

/*- /*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
* *
* Copyright (c) 2012 Hans Petter Selasky. All rights reserved. * Copyright (c) 2012 Hans Petter Selasky.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions
* are met: * are met:
* 1. Redistributions of source code must retain the above copyright * 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. * notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright * 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the * notice, this list of conditions and the following disclaimer in the
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int int
dwc_otg_attach(device_t dev) dwc_otg_attach(device_t dev)
{ {
struct dwc_otg_fdt_softc *sc = device_get_softc(dev); struct dwc_otg_fdt_softc *sc = device_get_softc(dev);
char usb_mode[24]; char usb_mode[24];
int err; int err;
int rid; int rid;
/* initialise some bus fields */
sc->sc_otg.sc_bus.parent = dev; sc->sc_otg.sc_bus.parent = dev;
sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices;
sc->sc_otg.sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
sc->sc_otg.sc_bus.dma_bits = 32;
/* get USB mode, if any */ /* get USB mode, if any */
if (OF_getprop(ofw_bus_get_node(dev), "dr_mode", if (OF_getprop(ofw_bus_get_node(dev), "dr_mode",
&usb_mode, sizeof(usb_mode)) > 0) { &usb_mode, sizeof(usb_mode)) > 0) {
/* ensure proper zero termination */ /* ensure proper zero termination */
usb_mode[sizeof(usb_mode) - 1] = 0; usb_mode[sizeof(usb_mode) - 1] = 0;
if (strcasecmp(usb_mode, "host") == 0) if (strcasecmp(usb_mode, "host") == 0)
sc->sc_otg.sc_mode = DWC_MODE_HOST; sc->sc_otg.sc_mode = DWC_MODE_HOST;
else if (strcasecmp(usb_mode, "peripheral") == 0) else if (strcasecmp(usb_mode, "peripheral") == 0)
sc->sc_otg.sc_mode = DWC_MODE_DEVICE; sc->sc_otg.sc_mode = DWC_MODE_DEVICE;
else if (strcasecmp(usb_mode, "otg") != 0) { else if (strcasecmp(usb_mode, "otg") != 0) {
device_printf(dev, "Invalid FDT dr_mode: %s\n", device_printf(dev, "Invalid FDT dr_mode: %s\n",
usb_mode); usb_mode);
} }
} }
/* get all DMA memory */
if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus,
USB_GET_DMA_TAG(dev), NULL)) {
return (ENOMEM);
}
rid = 0; rid = 0;
sc->sc_otg.sc_io_res = sc->sc_otg.sc_io_res =
bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (!(sc->sc_otg.sc_io_res)) { if (!(sc->sc_otg.sc_io_res))
err = ENOMEM;
goto error; goto error;
}
sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res);
sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res);
sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res);
/* /*
* brcm,bcm2708-usb FDT provides two interrupts, we need only the USB * brcm,bcm2708-usb FDT provides two interrupts, we need only the USB
* interrupt (VC_USB). The latest FDT for it provides an * interrupt (VC_USB). The latest FDT for it provides an
* interrupt-names property and swapped them around, while older ones * interrupt-names property and swapped them around, while older ones
* did not have interrupt-names and put the usb interrupt in the second * did not have interrupt-names and put the usb interrupt in the second
* position. We'll attempt to use interrupt-names first with a fallback * position. We'll attempt to use interrupt-names first with a fallback
* to the old method of assuming the index based on the compatible * to the old method of assuming the index based on the compatible
* string. * string.
*/ */
if (dwc_otg_irq_index(dev, &rid) != 0) if (dwc_otg_irq_index(dev, &rid) != 0)
rid = ofw_bus_is_compatible(dev, "brcm,bcm2708-usb") ? 1 : 0; rid = ofw_bus_is_compatible(dev, "brcm,bcm2708-usb") ? 1 : 0;
sc->sc_otg.sc_irq_res = sc->sc_otg.sc_irq_res =
bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
if (sc->sc_otg.sc_irq_res == NULL) if (sc->sc_otg.sc_irq_res == NULL)
goto error; goto error;
sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
if (sc->sc_otg.sc_bus.bdev == NULL) if (sc->sc_otg.sc_bus.bdev == NULL)
goto error; goto error;
device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus);
err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
&dwc_otg_filter_interrupt, &dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
if (err) {
sc->sc_otg.sc_intr_hdl = NULL;
goto error;
}
err = dwc_otg_init(&sc->sc_otg); err = dwc_otg_init(&sc->sc_otg);
if (err == 0) { if (err == 0) {
err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
} }
if (err) if (err)
goto error; goto error;
return (0); return (0);
error: error:
dwc_otg_detach(dev); dwc_otg_detach(dev);
return (ENXIO); return (ENXIO);
} }
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