320 lines
8.4 KiB
C
320 lines
8.4 KiB
C
/*-
|
|
* Copyright (c) 2014 Ruslan Bukin <br@bsdpad.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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_bus.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/rman.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_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/usb/controller/xhcireg.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
|
|
#include <arm/samsung/exynos/exynos5_common.h>
|
|
|
|
#include "opt_platform.h"
|
|
|
|
#define GSNPSID 0x20
|
|
#define GSNPSID_MASK 0xffff0000
|
|
#define REVISION_MASK 0xffff
|
|
#define GCTL 0x10
|
|
#define GCTL_PWRDNSCALE(n) ((n) << 19)
|
|
#define GCTL_U2RSTECN (1 << 16)
|
|
#define GCTL_CLK_BUS (0)
|
|
#define GCTL_CLK_PIPE (1)
|
|
#define GCTL_CLK_PIPEHALF (2)
|
|
#define GCTL_CLK_M (3)
|
|
#define GCTL_CLK_S (6)
|
|
#define GCTL_PRTCAP(n) (((n) & (3 << 12)) >> 12)
|
|
#define GCTL_PRTCAPDIR(n) ((n) << 12)
|
|
#define GCTL_PRTCAP_HOST 1
|
|
#define GCTL_PRTCAP_DEVICE 2
|
|
#define GCTL_PRTCAP_OTG 3
|
|
#define GCTL_CORESOFTRESET (1 << 11)
|
|
#define GCTL_SCALEDOWN_MASK 3
|
|
#define GCTL_SCALEDOWN_SHIFT 4
|
|
#define GCTL_DISSCRAMBLE (1 << 3)
|
|
#define GCTL_DSBLCLKGTNG (1 << 0)
|
|
#define GHWPARAMS1 0x3c
|
|
#define GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24)
|
|
#define GHWPARAMS1_EN_PWROPT_NO 0
|
|
#define GHWPARAMS1_EN_PWROPT_CLK 1
|
|
#define GUSB2PHYCFG(n) (0x100 + (n * 0x04))
|
|
#define GUSB2PHYCFG_PHYSOFTRST (1 << 31)
|
|
#define GUSB2PHYCFG_SUSPHY (1 << 6)
|
|
#define GUSB3PIPECTL(n) (0x1c0 + (n * 0x04))
|
|
#define GUSB3PIPECTL_PHYSOFTRST (1 << 31)
|
|
#define GUSB3PIPECTL_SUSPHY (1 << 17)
|
|
|
|
/* Forward declarations */
|
|
static device_attach_t exynos_xhci_attach;
|
|
static device_detach_t exynos_xhci_detach;
|
|
static device_probe_t exynos_xhci_probe;
|
|
|
|
struct exynos_xhci_softc {
|
|
device_t dev;
|
|
struct xhci_softc base;
|
|
struct resource *res[3];
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
};
|
|
|
|
static struct resource_spec exynos_xhci_spec[] = {
|
|
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
|
|
{ SYS_RES_MEMORY, 1, RF_ACTIVE },
|
|
{ SYS_RES_IRQ, 0, RF_ACTIVE },
|
|
{ -1, 0 }
|
|
};
|
|
|
|
static device_method_t xhci_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, exynos_xhci_probe),
|
|
DEVMETHOD(device_attach, exynos_xhci_attach),
|
|
DEVMETHOD(device_detach, exynos_xhci_detach),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
/* kobj_class definition */
|
|
static driver_t xhci_driver = {
|
|
"xhci",
|
|
xhci_methods,
|
|
sizeof(struct xhci_softc)
|
|
};
|
|
|
|
static devclass_t xhci_devclass;
|
|
|
|
DRIVER_MODULE(xhci, simplebus, xhci_driver, xhci_devclass, 0, 0);
|
|
MODULE_DEPEND(xhci, usb, 1, 1, 1);
|
|
|
|
/*
|
|
* Public methods
|
|
*/
|
|
static int
|
|
exynos_xhci_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
|
|
if (ofw_bus_is_compatible(dev, "samsung,exynos5250-dwusb3") == 0)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "Exynos USB 3.0 controller");
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
dwc3_init(struct exynos_xhci_softc *esc)
|
|
{
|
|
int hwparams1;
|
|
int rev;
|
|
int reg;
|
|
|
|
rev = READ4(esc, GSNPSID);
|
|
if ((rev & GSNPSID_MASK) != 0x55330000) {
|
|
printf("It is not DWC3 controller\n");
|
|
return (-1);
|
|
}
|
|
|
|
/* Reset controller */
|
|
WRITE4(esc, GCTL, GCTL_CORESOFTRESET);
|
|
WRITE4(esc, GUSB3PIPECTL(0), GUSB3PIPECTL_PHYSOFTRST);
|
|
WRITE4(esc, GUSB2PHYCFG(0), GUSB2PHYCFG_PHYSOFTRST);
|
|
|
|
DELAY(100000);
|
|
|
|
reg = READ4(esc, GUSB3PIPECTL(0));
|
|
reg &= ~(GUSB3PIPECTL_PHYSOFTRST);
|
|
WRITE4(esc, GUSB3PIPECTL(0), reg);
|
|
|
|
reg = READ4(esc, GUSB2PHYCFG(0));
|
|
reg &= ~(GUSB2PHYCFG_PHYSOFTRST);
|
|
WRITE4(esc, GUSB2PHYCFG(0), reg);
|
|
|
|
reg = READ4(esc, GCTL);
|
|
reg &= ~GCTL_CORESOFTRESET;
|
|
WRITE4(esc, GCTL, reg);
|
|
|
|
hwparams1 = READ4(esc, GHWPARAMS1);
|
|
|
|
reg = READ4(esc, GCTL);
|
|
reg &= ~(GCTL_SCALEDOWN_MASK << GCTL_SCALEDOWN_SHIFT);
|
|
reg &= ~(GCTL_DISSCRAMBLE);
|
|
|
|
if (GHWPARAMS1_EN_PWROPT(hwparams1) == \
|
|
GHWPARAMS1_EN_PWROPT_CLK)
|
|
reg &= ~(GCTL_DSBLCLKGTNG);
|
|
|
|
if ((rev & REVISION_MASK) < 0x190a)
|
|
reg |= (GCTL_U2RSTECN);
|
|
WRITE4(esc, GCTL, reg);
|
|
|
|
/* Set host mode */
|
|
reg = READ4(esc, GCTL);
|
|
reg &= ~(GCTL_PRTCAPDIR(GCTL_PRTCAP_OTG));
|
|
reg |= GCTL_PRTCAPDIR(GCTL_PRTCAP_HOST);
|
|
WRITE4(esc, GCTL, reg);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
exynos_xhci_attach(device_t dev)
|
|
{
|
|
struct exynos_xhci_softc *esc = device_get_softc(dev);
|
|
bus_space_handle_t bsh;
|
|
int err;
|
|
|
|
esc->dev = dev;
|
|
|
|
if (bus_alloc_resources(dev, exynos_xhci_spec, esc->res)) {
|
|
device_printf(dev, "could not allocate resources\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* XHCI registers */
|
|
esc->base.sc_io_tag = rman_get_bustag(esc->res[0]);
|
|
bsh = rman_get_bushandle(esc->res[0]);
|
|
esc->base.sc_io_size = rman_get_size(esc->res[0]);
|
|
|
|
/* DWC3 ctrl registers */
|
|
esc->bst = rman_get_bustag(esc->res[1]);
|
|
esc->bsh = rman_get_bushandle(esc->res[1]);
|
|
|
|
/*
|
|
* Set handle to USB related registers subregion used by
|
|
* generic XHCI driver.
|
|
*/
|
|
err = bus_space_subregion(esc->base.sc_io_tag, bsh, 0x0,
|
|
esc->base.sc_io_size, &esc->base.sc_io_hdl);
|
|
if (err != 0) {
|
|
device_printf(dev, "Subregion failed\n");
|
|
bus_release_resources(dev, exynos_xhci_spec, esc->res);
|
|
return (ENXIO);
|
|
}
|
|
|
|
if (xhci_init(&esc->base, dev, 0)) {
|
|
device_printf(dev, "Could not initialize softc\n");
|
|
bus_release_resources(dev, exynos_xhci_spec, esc->res);
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* Setup interrupt handler */
|
|
err = bus_setup_intr(dev, esc->res[2], INTR_TYPE_BIO | INTR_MPSAFE,
|
|
NULL, (driver_intr_t *)xhci_interrupt, &esc->base,
|
|
&esc->base.sc_intr_hdl);
|
|
if (err) {
|
|
device_printf(dev, "Could not setup irq, %d\n", err);
|
|
esc->base.sc_intr_hdl = NULL;
|
|
goto error;
|
|
}
|
|
|
|
/* Add USB device */
|
|
esc->base.sc_bus.bdev = device_add_child(dev, "usbus", -1);
|
|
if (esc->base.sc_bus.bdev == NULL) {
|
|
device_printf(dev, "Could not add USB device\n");
|
|
goto error;
|
|
}
|
|
device_set_ivars(esc->base.sc_bus.bdev, &esc->base.sc_bus);
|
|
strlcpy(esc->base.sc_vendor, "Samsung", sizeof(esc->base.sc_vendor));
|
|
|
|
dwc3_init(esc);
|
|
|
|
err = xhci_halt_controller(&esc->base);
|
|
if (err == 0) {
|
|
device_printf(dev, "Starting controller\n");
|
|
err = xhci_start_controller(&esc->base);
|
|
}
|
|
if (err == 0) {
|
|
device_printf(dev, "Controller started\n");
|
|
err = device_probe_and_attach(esc->base.sc_bus.bdev);
|
|
}
|
|
if (err != 0)
|
|
goto error;
|
|
return (0);
|
|
|
|
error:
|
|
exynos_xhci_detach(dev);
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
exynos_xhci_detach(device_t dev)
|
|
{
|
|
struct exynos_xhci_softc *esc = device_get_softc(dev);
|
|
device_t bdev;
|
|
int err;
|
|
|
|
if (esc->base.sc_bus.bdev != NULL) {
|
|
bdev = esc->base.sc_bus.bdev;
|
|
device_detach(bdev);
|
|
device_delete_child(dev, bdev);
|
|
}
|
|
/* During module unload there are lots of children leftover */
|
|
device_delete_children(dev);
|
|
|
|
xhci_halt_controller(&esc->base);
|
|
|
|
if (esc->res[2] && esc->base.sc_intr_hdl) {
|
|
err = bus_teardown_intr(dev, esc->res[2],
|
|
esc->base.sc_intr_hdl);
|
|
if (err) {
|
|
device_printf(dev, "Could not tear down IRQ,"
|
|
" %d\n", err);
|
|
return (err);
|
|
}
|
|
}
|
|
|
|
bus_release_resources(dev, exynos_xhci_spec, esc->res);
|
|
|
|
xhci_uninit(&esc->base);
|
|
|
|
return (0);
|
|
}
|