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Initial import of Ralink/Mediatek MIPS SoC support #5

Browse Source 
USB support

This revision adds USB (EHCI/OHCI/OTG, depending on SoC type) support for
various Ralink/Mediatek SoCs.
Currently USB is not supported on MT7621, this will be a future addition.

A USB PHY driver is also included, so that we can properly initialize the
USB PHY (e.g., clocks, resets, registers where needed), before attempting
to initialize EHCI/OHCI/OTG functionality.

Approved by:	adrian (mentor)
Sponsored by:	Smartcom - Bulgaria AD
Differential Revision:	https://reviews.freebsd.org/D5841
This commit is contained in:
Stanislav Galabov 2016-04-07 11:20:03 +00:00
parent dc0996af4e
commit d09031f528
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=297670
5 changed files with 1046 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

220
sys/mips/mediatek/mtk_dotg.c Normal file
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#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*-
* Copyright (c) 2015-2016 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/dwc_otg.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#define MEM_RID 0
static device_probe_t dotg_fdt_probe;
static device_attach_t dotg_fdt_attach;
static device_detach_t dotg_fdt_detach;
static int
dotg_fdt_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "ralink,rt3050-otg"))
return (ENXIO);
device_set_desc(dev, "MTK DWC-OTG USB Controller");
return (0);
}
static int
dotg_fdt_attach(device_t dev)
{
struct dwc_otg_softc *sc = device_get_softc(dev);
int err, rid;
/* setup controller interface softc */
/* initialise some bus fields */
sc->sc_mode = DWC_MODE_HOST;
sc->sc_bus.parent = dev;
sc->sc_bus.devices = sc->sc_devices;
sc->sc_bus.devices_max = DWC_OTG_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), NULL)) {
printf("No mem\n");
return (ENOMEM);
}
rid = 0;
sc->sc_io_res =
bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (!(sc->sc_io_res)) {
printf("Can`t alloc MEM\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);
rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&rid, RF_ACTIVE);
if (!(sc->sc_irq_res)) {
printf("Can`t alloc IRQ\n");
goto error;
}
sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
if (!(sc->sc_bus.bdev)) {
printf("Can`t add usbus\n");
goto error;
}
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
err = bus_setup_intr(dev, sc->sc_irq_res,
INTR_TYPE_TTY | INTR_MPSAFE, dwc_otg_filter_interrupt,
dwc_otg_interrupt, sc, &sc->sc_intr_hdl);
if (err) {
sc->sc_intr_hdl = NULL;
printf("Can`t set IRQ handle\n");
goto error;
}
err = dwc_otg_init(sc);
if (err) printf("dotg_init fail\n");
if (!err) {
err = device_probe_and_attach(sc->sc_bus.bdev);
if (err) printf("device_probe_and_attach fail %d\n", err);
}
if (err) {
goto error;
}
return (0);
error:
dotg_fdt_detach(dev);
return (ENXIO);
}
static int
dotg_fdt_detach(device_t dev)
{
struct dwc_otg_softc *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);
if (sc->sc_irq_res && sc->sc_intr_hdl) {
/*
* only call dotg_fdt_uninit() after dotg_fdt_init()
*/
dwc_otg_uninit(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, NULL);
return (0);
}
static device_method_t dotg_fdt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dotg_fdt_probe),
DEVMETHOD(device_attach, dotg_fdt_attach),
DEVMETHOD(device_detach, dotg_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 dotg_fdt_driver = {
.name = "dwcotg",
.methods = dotg_fdt_methods,
.size = sizeof(struct dwc_otg_softc),
};
static devclass_t dotg_fdt_devclass;
DRIVER_MODULE(dotg, simplebus, dotg_fdt_driver, dotg_fdt_devclass, 0, 0);

223
sys/mips/mediatek/mtk_ehci.c Normal file
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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/ehci.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#define EHCI_HC_DEVSTR "MTK USB 2.0 Controller"
static device_probe_t ehci_fdt_probe;
static device_attach_t ehci_fdt_attach;
static device_detach_t ehci_fdt_detach;
static int
ehci_fdt_probe(device_t self)
{
if (!ofw_bus_status_okay(self))
return (ENXIO);
if (!ofw_bus_is_compatible(self, "ralink,rt3xxx-ehci"))
return (ENXIO);
device_set_desc(self, EHCI_HC_DEVSTR);
return (BUS_PROBE_DEFAULT);
}
static int
ehci_fdt_attach(device_t self)
{
ehci_softc_t *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 = EHCI_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(self), &ehci_iterate_hw_softc)) {
printf("No mem\n");
return (ENOMEM);
}
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);
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, EHCI_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 *)ehci_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 = ehci_init(sc);
if (!err) {
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:
ehci_fdt_detach(self);
return (ENXIO);
}
static int
ehci_fdt_detach(device_t self)
{
ehci_softc_t *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 ehci_detach() after ehci_init()
*/
ehci_detach(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;
}
usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
return (0);
}
static device_method_t ehci_fdt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ehci_fdt_probe),
DEVMETHOD(device_attach, ehci_fdt_attach),
DEVMETHOD(device_detach, ehci_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 ehci_fdt_driver = {
.name = "ehci",
.methods = ehci_fdt_methods,
.size = sizeof(ehci_softc_t),
};
static devclass_t ehci_fdt_devclass;
DRIVER_MODULE(ehci, simplebus, ehci_fdt_driver, ehci_fdt_devclass, 0, 0);

223
sys/mips/mediatek/mtk_ohci.c Normal file
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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/ohci.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#define OHCI_HC_DEVSTR "MTK USB Controller"
static device_probe_t ohci_fdt_probe;
static device_attach_t ohci_fdt_attach;
static device_detach_t ohci_fdt_detach;
static int
ohci_fdt_probe(device_t self)
{
if (!ofw_bus_status_okay(self))
return (ENXIO);
if (!ofw_bus_is_compatible(self, "ralink,rt3xxx-ohci"))
return (ENXIO);
device_set_desc(self, OHCI_HC_DEVSTR);
return (BUS_PROBE_DEFAULT);
}
static int
ohci_fdt_attach(device_t self)
{
ohci_softc_t *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 = 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(self), &ohci_iterate_hw_softc)) {
printf("No mem\n");
return (ENOMEM);
}
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);
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, OHCI_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 *)ohci_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 = ohci_init(sc);
if (!err) {
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:
ohci_fdt_detach(self);
return (ENXIO);
}
static int
ohci_fdt_detach(device_t self)
{
ohci_softc_t *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 ohci_detach() after ohci_init()
*/
ohci_detach(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;
}
usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
return (0);
}
static device_method_t ohci_fdt_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
};
static driver_t ohci_fdt_driver = {
.name = "ohci",
.methods = ohci_fdt_methods,
.size = sizeof(ohci_softc_t),
};
static devclass_t ohci_fdt_devclass;
DRIVER_MODULE(ohci, simplebus, ohci_fdt_driver, ohci_fdt_devclass, 0, 0);

314
sys/mips/mediatek/mtk_usb_phy.c Normal file
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@ -0,0 +1,314 @@
/*-
* Copyright (c) 2016 Stanislav Galabov.
* 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 ``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 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 <sys/stddef.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <dev/fdt/fdt_common.h>
#include <dev/fdt/fdt_clock.h>
#include <mips/mediatek/fdt_reset.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <mips/mediatek/mtk_sysctl.h>
#include <mips/mediatek/mtk_soc.h>
#include <mips/mediatek/mtk_usb_phy.h>
#define RESET_ASSERT_DELAY 1000
#define RESET_DEASSERT_DELAY 10000
struct mtk_usb_phy_softc {
device_t dev;
struct resource * res;
uint32_t fm_base;
uint32_t u2_base;
uint32_t sr_coef;
uint32_t socid;
};
#define USB_PHY_READ(_sc, _off) bus_read_4((_sc)->res, (_off))
#define USB_PHY_WRITE(_sc, _off, _val) bus_write_4((_sc)->res, (_off), (_val))
#define USB_PHY_CLR_SET(_sc, _off, _clr, _set) \
USB_PHY_WRITE(_sc, _off, ((USB_PHY_READ(_sc, _off) & ~(_clr)) | (_set)))
#define USB_PHY_READ_U2(_sc, _off) \
USB_PHY_READ((_sc), ((_sc)->u2_base + (_off)))
#define USB_PHY_WRITE_U2(_sc, _off, _val) \
USB_PHY_WRITE((_sc), ((_sc)->u2_base + (_off)), (_val))
#define USB_PHY_CLR_SET_U2(_sc, _off, _clr, _set) \
USB_PHY_WRITE_U2((_sc), (_off), ((USB_PHY_READ_U2((_sc), (_off)) & \
~(_clr)) | (_set)))
#define USB_PHY_BARRIER(_sc) bus_barrier((_sc)->res, 0, 0, \
BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ)
#define USB_PHY_READ_FM(_sc, _off) \
USB_PHY_READ((_sc), ((_sc)->fm_base + (_off)))
#define USB_PHY_WRITE_FM(_sc, _off) \
USB_PHY_WRITE((_sc), ((_sc)->fm_base + (_off)), (_val))
#define USB_PHY_CLR_SET_FM(_sc, _off, _clr, _set) \
USB_PHY_WRITE_U2((_sc), (_off), ((USB_PHY_READ_U2((_sc), (_off)) & \
~(_clr)) | (_set)))
static void mtk_usb_phy_mt7621_init(device_t);
static void mtk_usb_phy_mt7628_init(device_t);
static struct ofw_compat_data compat_data[] = {
{ "ralink,mt7620a-usbphy", MTK_SOC_MT7620A },
{ "ralink,mt7628an-usbphy", MTK_SOC_MT7628 },
{ "ralink,rt3xxx-usbphy", MTK_SOC_RT3352 },
{ NULL, MTK_SOC_UNKNOWN }
};
static int
mtk_usb_phy_probe(device_t dev)
{
struct mtk_usb_phy_softc *sc = device_get_softc(dev);
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if ((sc->socid =
ofw_bus_search_compatible(dev, compat_data)->ocd_data) ==
MTK_SOC_UNKNOWN)
return (ENXIO);
device_set_desc(dev, "MTK USB PHY");
return (0);
}
static int
mtk_usb_phy_attach(device_t dev)
{
struct mtk_usb_phy_softc * sc = device_get_softc(dev);
phandle_t node;
uint32_t val;
int rid;
sc->dev = dev;
/* Get our FDT node and SoC id */
node = ofw_bus_get_node(dev);
/* Now let's see about setting USB to host or device mode */
/* XXX: is it the same for all SoCs? */
val = mtk_sysctl_get(SYSCTL_SYSCFG1);
if (OF_hasprop(node, "mtk,usb-device"))
val &= ~SYSCFG1_USB_HOST_MODE;
else
val |= SYSCFG1_USB_HOST_MODE;
mtk_sysctl_set(SYSCTL_SYSCFG1, val);
/* If we have clocks defined - enable them */
if (OF_hasprop(node, "clocks"))
fdt_clock_enable_all(dev);
/* If we have resets defined - perform a reset sequence */
if (OF_hasprop(node, "resets")) {
fdt_reset_assert_all(dev);
DELAY(RESET_ASSERT_DELAY);
fdt_reset_deassert_all(dev);
DELAY(RESET_DEASSERT_DELAY);
}
/* Careful, some devices actually require resources */
if (OF_hasprop(node, "reg")) {
rid = 0;
sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->res == NULL) {
device_printf(dev, "could not map memory\n");
return (ENXIO);
}
} else {
sc->res = NULL;
}
/* Some SoCs require specific USB PHY init... handle these */
switch (sc->socid) {
case MTK_SOC_MT7628: /* Fallthrough */
case MTK_SOC_MT7688:
if (sc->res == NULL)
return (ENXIO);
sc->fm_base = MT7628_FM_FEG_BASE;
sc->u2_base = MT7628_U2_BASE;
sc->sr_coef = MT7628_SR_COEF;
mtk_usb_phy_mt7628_init(dev);
break;
case MTK_SOC_MT7621:
if (sc->res == NULL)
return (ENXIO);
sc->fm_base = MT7621_FM_FEG_BASE;
sc->u2_base = MT7621_U2_BASE;
sc->sr_coef = MT7621_SR_COEF;
mtk_usb_phy_mt7621_init(dev);
break;
}
/* We no longer need the resources, release them */
if (sc->res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->res);
return (0);
}
static int
mtk_usb_phy_detach(device_t dev)
{
struct mtk_usb_phy_softc *sc = device_get_softc(dev);
phandle_t node;
/* Get our FDT node */
node = ofw_bus_get_node(dev);
/* If we have resets defined - assert them */
if (OF_hasprop(node, "resets"))
fdt_reset_assert_all(dev);
/* If we have clocks defined - disable them */
if (OF_hasprop(node, "clocks"))
fdt_clock_disable_all(dev);
/* Finally, release resources, if any were allocated */
if (sc->res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->res);
return (0);
}
static void
mtk_usb_phy_slew_rate_calibration(struct mtk_usb_phy_softc *sc)
{
uint32_t val;
int i;
USB_PHY_CLR_SET_U2(sc, U2_PHY_ACR0, 0, SRCAL_EN);
USB_PHY_BARRIER(sc);
DELAY(1000);
USB_PHY_CLR_SET_FM(sc, U2_PHY_FMMONR1, 0, FRCK_EN);
USB_PHY_BARRIER(sc);
USB_PHY_CLR_SET_FM(sc, U2_PHY_FMCR0, CYCLECNT, 0x400);
USB_PHY_BARRIER(sc);
USB_PHY_CLR_SET_FM(sc, U2_PHY_FMCR0, 0, FDET_EN);
USB_PHY_BARRIER(sc);
for (i = 0; i < 1000; i++) {
if ((val = USB_PHY_READ_FM(sc, U2_PHY_FMMONR0)) != 0) {
device_printf(sc->dev, "DONE with FDET\n");
break;
}
DELAY(10000);
}
device_printf(sc->dev, "After FDET\n");
USB_PHY_CLR_SET_FM(sc, U2_PHY_FMCR0, FDET_EN, 0);
USB_PHY_BARRIER(sc);
USB_PHY_CLR_SET_FM(sc, U2_PHY_FMMONR1, FRCK_EN, 0);
USB_PHY_BARRIER(sc);
USB_PHY_CLR_SET_U2(sc, U2_PHY_ACR0, SRCAL_EN, 0);
USB_PHY_BARRIER(sc);
DELAY(1000);
if (val == 0) {
USB_PHY_CLR_SET_U2(sc, U2_PHY_ACR0, SRCTRL, 0x4 << SRCTRL_OFF);
USB_PHY_BARRIER(sc);
} else {
val = ((((1024 * 25 * sc->sr_coef) / val) + 500) / 1000) &
SRCTRL_MSK;
USB_PHY_CLR_SET_U2(sc, U2_PHY_ACR0, SRCTRL, val << SRCTRL_OFF);
USB_PHY_BARRIER(sc);
}
}
static void
mtk_usb_phy_mt7621_init(device_t dev)
{
struct mtk_usb_phy_softc *sc = device_get_softc(dev);
/* Slew rate calibration only, but for 2 ports */
mtk_usb_phy_slew_rate_calibration(sc);
sc->u2_base = MT7621_U2_BASE_P1;
mtk_usb_phy_slew_rate_calibration(sc);
}
static void
mtk_usb_phy_mt7628_init(device_t dev)
{
struct mtk_usb_phy_softc *sc = device_get_softc(dev);
/* XXX: possibly add barriers between the next writes? */
USB_PHY_WRITE_U2(sc, U2_PHY_DCR0, 0x00ffff02);
USB_PHY_BARRIER(sc);
USB_PHY_WRITE_U2(sc, U2_PHY_DCR0, 0x00555502);
USB_PHY_BARRIER(sc);
USB_PHY_WRITE_U2(sc, U2_PHY_DCR0, 0x00aaaa02);
USB_PHY_BARRIER(sc);
USB_PHY_WRITE_U2(sc, U2_PHY_DCR0, 0x00000402);
USB_PHY_BARRIER(sc);
USB_PHY_WRITE_U2(sc, U2_PHY_AC0, 0x0048086a);
USB_PHY_BARRIER(sc);
USB_PHY_WRITE_U2(sc, U2_PHY_AC1, 0x4400001c);
USB_PHY_BARRIER(sc);
USB_PHY_WRITE_U2(sc, U2_PHY_ACR3, 0xc0200000);
USB_PHY_BARRIER(sc);
USB_PHY_WRITE_U2(sc, U2_PHY_DTM0, 0x02000000);
USB_PHY_BARRIER(sc);
/* Slew rate calibration */
//mtk_usb_phy_slew_rate_calibration(sc);
}
static device_method_t mtk_usb_phy_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mtk_usb_phy_probe),
DEVMETHOD(device_attach, mtk_usb_phy_attach),
DEVMETHOD(device_detach, mtk_usb_phy_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_usb_phy_driver = {
.name = "usbphy",
.methods = mtk_usb_phy_methods,
.size = sizeof(struct mtk_usb_phy_softc),
};
static devclass_t mtk_usb_phy_devclass;
DRIVER_MODULE(usbphy, simplebus, mtk_usb_phy_driver, mtk_usb_phy_devclass, 0,
0);

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/*-
* Copyright (c) 2016 Stanislav Galabov.
* 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.
*
* $FreeBSD$
*/
#ifndef _MTK_USB_PHY_H_
#define _MTK_USB_PHY_H_
#define MT7621_FM_FEG_BASE 0x0100
#define MT7621_U2_BASE 0x0800
#define MT7621_U2_BASE_P1 0x1000
#define MT7621_SR_COEF 28
#define MT7628_FM_FEG_BASE 0x0f00
#define MT7628_U2_BASE 0x0800
#define MT7628_SR_COEF 32
#define U2_PHY_AC0 0x00
#define U2_PHY_AC1 0x04
#define U2_PHY_AC2 0x08
#define U2_PHY_ACR0 0x10
#define SRCAL_EN (1<<23)
#define SRCTRL_MSK 0x7
#define SRCTRL_OFF 16
#define SRCTRL (SRCTRL_MSK<<SRCTRL_OFF)
#define U2_PHY_ACR1 0x14
#define U2_PHY_ACR2 0x18
#define U2_PHY_ACR3 0x1C
#define U2_PHY_DCR0 0x60
#define U2_PHY_DCR1 0x64
#define U2_PHY_DTM0 0x68
#define U2_PHY_DTM1 0x6C
#define U2_PHY_FMCR0 0x00
#define CYCLECNT (0xffffff)
#define FDET_EN (1<<24)
#define U2_PHY_FMCR1 0x04
#define FRCK_EN (1<<8)
#define U2_PHY_FMCR2 0x08
#define U2_PHY_FMMONR0 0x0C
#define U2_PHY_FMMONR1 0x10
#endif /* _MTK_USB_PHY_H_ */