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sys/dev/usb/controller/ohci_fdt.c
- This file was added.
/*- | |||||
* Copyright (c) 2006 M. Warner Losh. All rights reserved. | |||||
* Copyright (c) 2016 Emmanuel Vadot <manu@bidouilliste.com> | |||||
* 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. | |||||
*/ | |||||
/* | |||||
* Generic OHCI driver based on AT91 OHCI | |||||
*/ | |||||
#include <sys/cdefs.h> | |||||
__FBSDID("$FreeBSD$"); | |||||
#include <sys/param.h> | |||||
#include <sys/systm.h> | |||||
#include <sys/bus.h> | |||||
#include <sys/rman.h> | |||||
#include <sys/condvar.h> | |||||
#include <sys/kernel.h> | |||||
#include <sys/module.h> | |||||
#include <machine/bus.h> | |||||
#include <dev/ofw/ofw_bus.h> | |||||
#include <dev/ofw/ofw_bus_subr.h> | |||||
#include <dev/usb/usb.h> | |||||
#include <dev/usb/usbdi.h> | |||||
#include <dev/usb/usb_core.h> | |||||
#include <dev/usb/usb_busdma.h> | |||||
#include <dev/usb/usb_process.h> | |||||
#include <dev/usb/usb_util.h> | |||||
#include <dev/usb/usb_controller.h> | |||||
#include <dev/usb/usb_bus.h> | |||||
#include <dev/usb/controller/ohci.h> | |||||
#include <dev/usb/controller/ohcireg.h> | |||||
#include "ohci_fdt_if.h" | |||||
static int ohci_fdt_detach(device_t); | |||||
static int | |||||
ohci_fdt_probe(device_t dev) | |||||
{ | |||||
return (ENXIO); | |||||
/* No ready to use as the OHCI clock must be enabled */ | |||||
#ifdef notyet | |||||
if (!ofw_bus_status_okay(dev)) | |||||
return (ENXIO); | |||||
if (!ofw_bus_is_compatible(dev, "generic-ohci")) | |||||
return (ENXIO); | |||||
device_set_desc(dev, "Generic OHCI Controller"); | |||||
return (BUS_PROBE_DEFAULT); | |||||
#endif | |||||
} | |||||
static int | |||||
ohci_fdt_attach(device_t dev) | |||||
{ | |||||
ohci_softc_t *sc; | |||||
int err, rid; | |||||
sc = device_get_softc(dev); | |||||
sc->sc_bus.parent = dev; | |||||
sc->sc_bus.devices = sc->sc_devices; | |||||
sc->sc_bus.devices_max = OHCI_MAX_DEVICES; | |||||
sc->sc_bus.dma_bits = 32; | |||||
/* get all DMA memory */ | |||||
if (usb_bus_mem_alloc_all(&sc->sc_bus, | |||||
USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) { | |||||
return (ENOMEM); | |||||
jmcneill: 4 spaces for multi-line if | |||||
} | |||||
rid = 0; | |||||
sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, | |||||
&rid, RF_ACTIVE); | |||||
if (!sc->sc_io_res) { | |||||
err = ENOMEM; | |||||
Done Inline Actionsif (!sc->sc_io_res) { jmcneill: if (!sc->sc_io_res) { | |||||
goto error; | |||||
} | |||||
sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); | |||||
sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); | |||||
sc->sc_io_size = rman_get_size(sc->sc_io_res); | |||||
rid = 0; | |||||
sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, | |||||
RF_ACTIVE); | |||||
if (!sc->sc_irq_res) { | |||||
mmelUnsubmitted Not Done Inline ActionsHere, and on may other places. mmel: Here, and on may other places.
imho, style(9) allows use '!' only on boolean variables. | |||||
manu_bidouilliste.comAuthorUnsubmitted Not Done Inline ActionsThanks, I'll look again at style(9) for this. manu_bidouilliste.com: Thanks, I'll look again at style(9) for this. | |||||
err = ENXIO; | |||||
Done Inline Actionsif (!sc->sc_irq_res) { jmcneill: if (!sc->sc_irq_res) { | |||||
goto error; | |||||
} | |||||
sc->sc_bus.bdev = device_add_child(dev, "usbus", -1); | |||||
if (!sc->sc_bus.bdev) { | |||||
Done Inline Actionsif (!sc->sc_bus.bdev) { jmcneill: if (!sc->sc_bus.bdev) { | |||||
err = ENXIO; | |||||
goto error; | |||||
} | |||||
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); | |||||
strlcpy(sc->sc_vendor, "Generic", sizeof(sc->sc_vendor)); | |||||
err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, | |||||
NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_intr_hdl); | |||||
if (err) { | |||||
sc->sc_intr_hdl = NULL; | |||||
goto error; | |||||
} | |||||
if (OHCI_FDT_INIT(dev) != 0) { | |||||
Done Inline ActionsAssigning err here but the error path always returns ENXIO. jmcneill: Assigning `err` here but the error path always returns ENXIO. | |||||
err = ENXIO; | |||||
goto error; | |||||
} | |||||
err = ohci_init(sc); | |||||
if (!err) { | |||||
err = device_probe_and_attach(sc->sc_bus.bdev); | |||||
} | |||||
if (err) { | |||||
goto error; | |||||
} | |||||
return (0); | |||||
error: | |||||
ohci_fdt_detach(dev); | |||||
return (err); | |||||
} | |||||
static int | |||||
ohci_fdt_detach(device_t dev) | |||||
{ | |||||
ohci_softc_t *sc = device_get_softc(dev); | |||||
device_t bdev; | |||||
int err; | |||||
if (sc->sc_bus.bdev) { | |||||
bdev = sc->sc_bus.bdev; | |||||
device_detach(bdev); | |||||
device_delete_child(dev, bdev); | |||||
} | |||||
/* during module unload there are lots of children leftover */ | |||||
device_delete_children(dev); | |||||
/* | |||||
* 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_io_tag, sc->sc_io_hdl, OHCI_CONTROL, 0); | |||||
if (sc->sc_irq_res && sc->sc_intr_hdl) { | |||||
/* | |||||
* only call ohci_detach() after ohci_init() | |||||
*/ | |||||
ohci_detach(sc); | |||||
err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl); | |||||
sc->sc_intr_hdl = NULL; | |||||
} | |||||
if (sc->sc_irq_res) { | |||||
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); | |||||
sc->sc_irq_res = NULL; | |||||
} | |||||
if (sc->sc_io_res) { | |||||
bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_io_res); | |||||
sc->sc_io_res = NULL; | |||||
} | |||||
usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc); | |||||
if (OHCI_FDT_DEINIT(dev) != 0) | |||||
return (ENXIO); | |||||
return (0); | |||||
} | |||||
static device_method_t ohci_methods[] = { | |||||
/* Device interface */ | |||||
/* DEVMETHOD(device_probe, ohci_fdt_probe), */ | |||||
DEVMETHOD(device_attach, ohci_fdt_attach), | |||||
DEVMETHOD(device_detach, ohci_fdt_detach), | |||||
DEVMETHOD(device_suspend, bus_generic_suspend), | |||||
DEVMETHOD(device_resume, bus_generic_resume), | |||||
DEVMETHOD(device_shutdown, bus_generic_shutdown), | |||||
DEVMETHOD_END | |||||
}; | |||||
driver_t ohci_driver = { | |||||
mmelUnsubmitted Not Done Inline Actionsstatic ? mmel: static ? | |||||
manu_bidouilliste.comAuthorUnsubmitted Not Done Inline ActionsBecause I need this struct when subclassing, if there is another method please let me know. manu_bidouilliste.com: Because I need this struct when subclassing, if there is another method please let me know. | |||||
.name = "ohci", | |||||
.methods = ohci_methods, | |||||
.size = sizeof(ohci_softc_t), | |||||
}; | |||||
static devclass_t ohci_devclass; | |||||
DRIVER_MODULE(ohci, simplebus, ohci_driver, ohci_devclass, 0, 0); | |||||
MODULE_DEPEND(ohci, usb, 1, 1, 1); |
4 spaces for multi-line if