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Differential D19335 Diff 56928 sys/dev/usb/controller/dwc_xhci.c

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sys/dev/usb/controller/dwc_xhci.c

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/*
* Copyright (c) 2017 Mark kettenis <kettenis@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_bus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/condvar.h>
#include <sys/kernel.h>
#include <sys/module.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_controller.h>
#include <dev/usb/usb_bus.h>
#include <dev/usb/controller/xhci.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#ifdef EXT_RESOURCES
#include <dev/extres/phy/phy.h>
#endif
#include "generic_xhci.h"
#define XHCI_DWC3_DEVSTR "Synopsys DesignWare USB 3.0 controller"
#define XHCI_DWC3_VENDOR "Synopsys"
static struct ofw_compat_data compat_data[] = {
{"synopsys,dwc3", true},
{"snps,dwc3", true},
{NULL, false}
};
static int
dwc_xhci_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
return (ENXIO);
device_set_desc(dev, XHCI_DWC3_DEVSTR);
return (BUS_PROBE_DEFAULT);
}
#define USB3_GCTL 0xc110
#define USB3_GCTL_PRTCAPDIR_MASK (0x3 << 12)
#define USB3_GCTL_PRTCAPDIR_HOST (0x1 << 12)
#define USB3_GCTL_PRTCAPDIR_DEVICE (0x2 << 12)
#define USB3_GUCTL1 0xc11c
#define USB3_GUCTL1_TX_IPGAP_LINECHECK_DIS (1 << 28)
#define USB3_GUSB2PHYCFG0 0xc200
#define USB3_GUSB2PHYCFG0_U2_FREECLK_EXISTS (1 << 30)
#define USB3_GUSB2PHYCFG0_USBTRDTIM(n) ((n) << 10)
#define USB3_GUSB2PHYCFG0_ENBLSLPM (1 << 8)
#define USB3_GUSB2PHYCFG0_SUSPENDUSB20 (1 << 6)
#define USB3_GUSB2PHYCFG0_PHYIF (1 << 3)
static void
dwc3_init(struct xhci_softc *sc, phandle_t node)
{
char phy_type[16] = { 0 };
uint32_t reg;
/* We don't support device mode, so always force host mode. */
reg = bus_space_read_4(sc->sc_io_tag, sc->sc_io_hdl, USB3_GCTL);
reg &= ~USB3_GCTL_PRTCAPDIR_MASK;
reg |= USB3_GCTL_PRTCAPDIR_HOST;
bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, USB3_GCTL, reg);
/* Configure USB2 PHY type and quirks. */
OF_getprop(node, "phy_type", phy_type, sizeof(phy_type));
reg = bus_space_read_4(sc->sc_io_tag, sc->sc_io_hdl, USB3_GUSB2PHYCFG0);
reg &= ~USB3_GUSB2PHYCFG0_USBTRDTIM(0xf);
if (strcmp(phy_type, "utmi_wide") == 0) {
reg |= USB3_GUSB2PHYCFG0_PHYIF;
reg |= USB3_GUSB2PHYCFG0_USBTRDTIM(0x5);
} else {
reg &= ~USB3_GUSB2PHYCFG0_PHYIF;
reg |= USB3_GUSB2PHYCFG0_USBTRDTIM(0x9);
}
if (OF_getproplen(node, "snps,dis-u2-freeclk-exists-quirk") == 0)
reg &= ~USB3_GUSB2PHYCFG0_U2_FREECLK_EXISTS;
if (OF_getproplen(node, "snps,dis_enblslpm_quirk") == 0)
reg &= ~USB3_GUSB2PHYCFG0_ENBLSLPM;
if (OF_getproplen(node, "snps,dis_u2_susphy_quirk") == 0)
reg &= ~USB3_GUSB2PHYCFG0_SUSPENDUSB20;
bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, USB3_GUSB2PHYCFG0, reg);
/* Configure USB3 quirks. */
reg = bus_space_read_4(sc->sc_io_tag, sc->sc_io_hdl, USB3_GUCTL1);
if (OF_getproplen(node, "snps,dis-tx-ipgap-linecheck-quirk") == 0)
reg |= USB3_GUCTL1_TX_IPGAP_LINECHECK_DIS;
bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, USB3_GUCTL1, reg);
}
static int
dwc_xhci_attach(device_t dev)
{
int err = 0;
struct xhci_softc *sc;
phandle_t node;
#ifdef EXT_RESOURCES
phy_t phy;
#endif
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
#ifdef EXT_RESOURCES
if (phy_get_by_ofw_property(dev, node, "usb2-phy", &phy) == 0)
if (phy_enable(phy) != 0)
device_printf(dev, "Cannot enable usb2-phy\n");
if (phy_get_by_ofw_property(dev, node, "usb3-phy", &phy) == 0)
if (phy_enable(phy) != 0)
device_printf(dev, "Cannot enable usb3-phy\n");
#endif
err = generic_xhci_init_resources(dev);
if (err != 0)
return (err);
sprintf(sc->sc_vendor, XHCI_DWC3_VENDOR);
device_set_desc(sc->sc_bus.bdev, XHCI_DWC3_DEVSTR);
dwc3_init(sc, node);
return (generic_xhci_init_controller(dev));
}
static int
dwc_xhci_detach(device_t dev)
{
int err = 0;
phandle_t node;
phy_t phy;
err = generic_xhci_detach(dev);
if (err != 0)
return (err);
node = ofw_bus_get_node(dev);
if (phy_get_by_ofw_property(dev, node, "usb2-phy", &phy) == 0)
phy_release(phy);
if (phy_get_by_ofw_property(dev, node, "usb3-phy", &phy) == 0)
phy_release(phy);
return (0);
}
static device_method_t dwc_xhci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dwc_xhci_probe),
DEVMETHOD(device_attach, dwc_xhci_attach),
DEVMETHOD(device_detach, dwc_xhci_detach),
DEVMETHOD_END
};
DEFINE_CLASS_1(xhci, dwc_xhci_driver, dwc_xhci_methods,
sizeof(struct xhci_softc), generic_xhci_driver);
static devclass_t dwc_xhci_devclass;
DRIVER_MODULE(dwcxhci, simplebus, dwc_xhci_driver, dwc_xhci_devclass, 0, 0);
MODULE_DEPEND(dwcxhci, usb, 1, 1, 1);