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f-stack/freebsd/mips/mediatek/mtk_xhci.c

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#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*-
* Copyright (c) 2015 Stanislav Galabov. All rights reserved.
* Copyright (c) 2010,2011 Aleksandr Rybalko. All rights reserved.
* 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 <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <sys/rman.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/xhci.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#define XHCI_HC_DEVSTR "MTK USB 3.0 controller"
static device_probe_t mtk_xhci_fdt_probe;
static device_attach_t mtk_xhci_fdt_attach;
static device_detach_t mtk_xhci_fdt_detach;
static void mtk_xhci_fdt_init(device_t dev);
static int
mtk_xhci_fdt_probe(device_t self)
{
if (!ofw_bus_status_okay(self))
return (ENXIO);
if (!ofw_bus_is_compatible(self, "mediatek,mt8173-xhci"))
return (ENXIO);
device_set_desc(self, XHCI_HC_DEVSTR);
return (BUS_PROBE_DEFAULT);
}
static int
mtk_xhci_fdt_attach(device_t self)
{
struct xhci_softc *sc = device_get_softc(self);
int err;
int rid;
/* initialise some bus fields */
sc->sc_bus.parent = self;
sc->sc_bus.devices = sc->sc_devices;
sc->sc_bus.devices_max = XHCI_MAX_DEVICES;
rid = 0;
sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (!sc->sc_io_res) {
device_printf(self, "Could not map memory\n");
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);
mtk_xhci_fdt_init(self);
rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->sc_irq_res == NULL) {
device_printf(self, "Could not allocate irq\n");
goto error;
}
sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
if (!(sc->sc_bus.bdev)) {
device_printf(self, "Could not add USB device\n");
goto error;
}
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
device_set_desc(sc->sc_bus.bdev, XHCI_HC_DEVSTR);
sprintf(sc->sc_vendor, "Mediatek");
err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
if (err) {
device_printf(self, "Could not setup irq, %d\n", err);
sc->sc_intr_hdl = NULL;
goto error;
}
err = xhci_init(sc, self, 1);
if (err == 0)
err = xhci_halt_controller(sc);
if (err == 0)
err = xhci_start_controller(sc);
if (err == 0)
err = device_probe_and_attach(sc->sc_bus.bdev);
if (err) {
device_printf(self, "USB init failed err=%d\n", err);
goto error;
}
return (0);
error:
mtk_xhci_fdt_detach(self);
return (ENXIO);
}
static int
mtk_xhci_fdt_detach(device_t self)
{
struct xhci_softc *sc = device_get_softc(self);
device_t bdev;
int err;
if (sc->sc_bus.bdev) {
bdev = sc->sc_bus.bdev;
device_detach(bdev);
device_delete_child(self, bdev);
}
/* during module unload there are lots of children leftover */
device_delete_children(self);
if (sc->sc_irq_res && sc->sc_intr_hdl) {
/*
* only call xhci_detach() after xhci_init()
*/
xhci_uninit(sc);
err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
if (err)
device_printf(self, "Could not tear down irq, %d\n",
err);
sc->sc_intr_hdl = NULL;
}
if (sc->sc_irq_res) {
bus_release_resource(self, SYS_RES_IRQ, 0,
sc->sc_irq_res);
sc->sc_irq_res = NULL;
}
if (sc->sc_io_res) {
bus_release_resource(self, SYS_RES_MEMORY, 0,
sc->sc_io_res);
sc->sc_io_res = NULL;
}
return (0);
}
static device_method_t mtk_xhci_fdt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mtk_xhci_fdt_probe),
DEVMETHOD(device_attach, mtk_xhci_fdt_attach),
DEVMETHOD(device_detach, mtk_xhci_fdt_detach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static driver_t mtk_xhci_fdt_driver = {
.name = "xhci",
.methods = mtk_xhci_fdt_methods,
.size = sizeof(struct xhci_softc),
};
static devclass_t mtk_xhci_fdt_devclass;
DRIVER_MODULE(xhci, simplebus, mtk_xhci_fdt_driver, mtk_xhci_fdt_devclass, 0,
0);
#define USB_HDMA_CFG 0x950
#define USB_HDMA_CFG_MT7621_VAL 0x10E0E0C
#define U3_LTSSM_TIMING_PARAM3 0x2514
#define U3_LTSSM_TIMING_VAL 0x3E8012C
#define SYNC_HS_EOF 0x938
#define SYNC_HS_EOF_VAL 0x201F3
#define USB_IP_SPAR0 0x107C8
#define USB_IP_SPAR0_VAL 1
#define U2_PHY_BASE_P0 0x10800
#define U2_PHY_BASE_P1 0x11000
#define U2_PHYD_CR1 0x64
#define U2_PHYD_CR1_MASK (3<<18)
#define U2_PHYD_CR1_VAL (1<<18)
#define USB_IP_PW_CTRL 0x10700
#define USB_IP_PW_CTRL_1 0x10704
#define USB_IP_CAP 0x10724
#define USB_U3_CTRL(p) (0x10730 + ((p) * 0x08))
#define USB_U2_CTRL(p) (0x10750 + ((p) * 0x08))
#define USB_IP_SW_RST (1 << 0)
#define USB_IP_PDN (1 << 0)
#define USB_PORT_DIS (1 << 0)
#define USB_PORT_PDN (1 << 1)
#define U3_PORT_NUM(p) (p & 0xFF)
#define U2_PORT_NUM(p) ((p>>8) & 0xFF)
#define RD4(_sc, _reg) bus_read_4((_sc)->sc_io_res, (_reg))
#define WR4(_sc, _reg, _val) bus_write_4((_sc)->sc_io_res, (_reg), (_val))
#define CLRSET4(_sc, _reg, _clr, _set) \
WR4((_sc), (_reg), (RD4((_sc), (_reg)) & ~(_clr)) | (_set))
static void
mtk_xhci_fdt_init(device_t dev)
{
struct xhci_softc *sc;
uint32_t temp, u3_ports, u2_ports, i;
sc = device_get_softc(dev);
temp = RD4(sc, USB_IP_CAP);
u3_ports = U3_PORT_NUM(temp);
u2_ports = U2_PORT_NUM(temp);
device_printf(dev, "%d USB3 ports, %d USB2 ports\n",
u3_ports, u2_ports);
CLRSET4(sc, USB_IP_PW_CTRL, 0, USB_IP_SW_RST);
CLRSET4(sc, USB_IP_PW_CTRL, USB_IP_SW_RST, 0);
CLRSET4(sc, USB_IP_PW_CTRL_1, USB_IP_PDN, 0);
for (i = 0; i < u3_ports; i++)
CLRSET4(sc, USB_U3_CTRL(i), USB_PORT_PDN | USB_PORT_DIS, 0);
for (i = 0; i < u2_ports; i++)
CLRSET4(sc, USB_U2_CTRL(i), USB_PORT_PDN | USB_PORT_DIS, 0);
DELAY(100000);
WR4(sc, USB_HDMA_CFG, USB_HDMA_CFG_MT7621_VAL);
WR4(sc, U3_LTSSM_TIMING_PARAM3, U3_LTSSM_TIMING_VAL);
WR4(sc, SYNC_HS_EOF, SYNC_HS_EOF_VAL);
WR4(sc, USB_IP_SPAR0, USB_IP_SPAR0_VAL);
CLRSET4(sc, U2_PHY_BASE_P0 + U2_PHYD_CR1, U2_PHYD_CR1_MASK,
U2_PHYD_CR1_VAL);
CLRSET4(sc, U2_PHY_BASE_P1 + U2_PHYD_CR1, U2_PHYD_CR1_MASK,
U2_PHYD_CR1_VAL);
}
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