296 lines
8.2 KiB
C
296 lines
8.2 KiB
C
/*-
|
|
* Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@gmail.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.
|
|
*/
|
|
|
|
/*
|
|
* Allwinner A10 attachment driver for the USB Enhanced Host Controller.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_bus.h"
|
|
|
|
#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 <sys/gpio.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/ehci.h>
|
|
#include <dev/usb/controller/ehcireg.h>
|
|
|
|
#include "gpio_if.h"
|
|
|
|
#include "a10_clk.h"
|
|
|
|
#define EHCI_HC_DEVSTR "Allwinner Integrated USB 2.0 controller"
|
|
|
|
#define SW_USB_PMU_IRQ_ENABLE 0x800
|
|
|
|
#define SW_SDRAM_REG_HPCR_USB1 (0x250 + ((1 << 2) * 4))
|
|
#define SW_SDRAM_REG_HPCR_USB2 (0x250 + ((1 << 2) * 5))
|
|
#define SW_SDRAM_BP_HPCR_ACCESS (1 << 0)
|
|
|
|
#define SW_ULPI_BYPASS (1 << 0)
|
|
#define SW_AHB_INCRX_ALIGN (1 << 8)
|
|
#define SW_AHB_INCR4 (1 << 9)
|
|
#define SW_AHB_INCR8 (1 << 10)
|
|
#define GPIO_USB2_PWR 227
|
|
|
|
#define A10_READ_4(sc, reg) \
|
|
bus_space_read_4((sc)->sc_io_tag, (sc)->sc_io_hdl, reg)
|
|
|
|
#define A10_WRITE_4(sc, reg, data) \
|
|
bus_space_write_4((sc)->sc_io_tag, (sc)->sc_io_hdl, reg, data)
|
|
|
|
static device_attach_t a10_ehci_attach;
|
|
static device_detach_t a10_ehci_detach;
|
|
|
|
bs_r_1_proto(reversed);
|
|
bs_w_1_proto(reversed);
|
|
|
|
static int
|
|
a10_ehci_probe(device_t self)
|
|
{
|
|
if (!ofw_bus_is_compatible(self, "allwinner,usb-ehci"))
|
|
return (ENXIO);
|
|
|
|
device_set_desc(self, EHCI_HC_DEVSTR);
|
|
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
a10_ehci_attach(device_t self)
|
|
{
|
|
ehci_softc_t *sc = device_get_softc(self);
|
|
bus_space_handle_t bsh;
|
|
device_t sc_gpio_dev;
|
|
int err;
|
|
int rid;
|
|
uint32_t reg_value = 0;
|
|
|
|
/* initialise some bus fields */
|
|
sc->sc_bus.parent = self;
|
|
sc->sc_bus.devices = sc->sc_devices;
|
|
sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
|
|
|
|
/* get all DMA memory */
|
|
if (usb_bus_mem_alloc_all(&sc->sc_bus,
|
|
USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
|
|
return (ENOMEM);
|
|
}
|
|
|
|
sc->sc_bus.usbrev = USB_REV_2_0;
|
|
|
|
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);
|
|
bsh = rman_get_bushandle(sc->sc_io_res);
|
|
|
|
sc->sc_io_size = rman_get_size(sc->sc_io_res);
|
|
|
|
if (bus_space_subregion(sc->sc_io_tag, bsh, 0x00,
|
|
sc->sc_io_size, &sc->sc_io_hdl) != 0)
|
|
panic("%s: unable to subregion USB host registers",
|
|
device_get_name(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, EHCI_HC_DEVSTR);
|
|
|
|
sprintf(sc->sc_vendor, "Allwinner");
|
|
|
|
/* Get the GPIO device, we need this to give power to USB */
|
|
sc_gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
|
|
if (sc_gpio_dev == NULL) {
|
|
device_printf(self, "Error: failed to get the GPIO device\n");
|
|
goto error;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
sc->sc_flags |= EHCI_SCFLG_DONTRESET;
|
|
|
|
/* Enable clock for USB */
|
|
a10_clk_usb_activate();
|
|
|
|
/* Give power to USB */
|
|
GPIO_PIN_SETFLAGS(sc_gpio_dev, GPIO_USB2_PWR, GPIO_PIN_OUTPUT);
|
|
GPIO_PIN_SET(sc_gpio_dev, GPIO_USB2_PWR, GPIO_PIN_HIGH);
|
|
|
|
/* Enable passby */
|
|
reg_value = A10_READ_4(sc, SW_USB_PMU_IRQ_ENABLE);
|
|
reg_value |= SW_AHB_INCR8; /* AHB INCR8 enable */
|
|
reg_value |= SW_AHB_INCR4; /* AHB burst type INCR4 enable */
|
|
reg_value |= SW_AHB_INCRX_ALIGN; /* AHB INCRX align enable */
|
|
reg_value |= SW_ULPI_BYPASS; /* ULPI bypass enable */
|
|
A10_WRITE_4(sc, SW_USB_PMU_IRQ_ENABLE, reg_value);
|
|
|
|
/* Configure port */
|
|
reg_value = A10_READ_4(sc, SW_SDRAM_REG_HPCR_USB2);
|
|
reg_value |= SW_SDRAM_BP_HPCR_ACCESS;
|
|
A10_WRITE_4(sc, SW_SDRAM_REG_HPCR_USB2, reg_value);
|
|
|
|
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:
|
|
a10_ehci_detach(self);
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
a10_ehci_detach(device_t self)
|
|
{
|
|
ehci_softc_t *sc = device_get_softc(self);
|
|
device_t bdev;
|
|
int err;
|
|
uint32_t reg_value = 0;
|
|
|
|
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)
|
|
/* XXX or should we panic? */
|
|
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);
|
|
|
|
/* Disable configure port */
|
|
reg_value = A10_READ_4(sc, SW_SDRAM_REG_HPCR_USB2);
|
|
reg_value &= ~SW_SDRAM_BP_HPCR_ACCESS;
|
|
A10_WRITE_4(sc, SW_SDRAM_REG_HPCR_USB2, reg_value);
|
|
|
|
/* Disable passby */
|
|
reg_value = A10_READ_4(sc, SW_USB_PMU_IRQ_ENABLE);
|
|
reg_value &= ~SW_AHB_INCR8; /* AHB INCR8 disable */
|
|
reg_value &= ~SW_AHB_INCR4; /* AHB burst type INCR4 disable */
|
|
reg_value &= ~SW_AHB_INCRX_ALIGN; /* AHB INCRX align disable */
|
|
reg_value &= ~SW_ULPI_BYPASS; /* ULPI bypass disable */
|
|
A10_WRITE_4(sc, SW_USB_PMU_IRQ_ENABLE, reg_value);
|
|
|
|
/* Disable clock for USB */
|
|
a10_clk_usb_deactivate();
|
|
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t ehci_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, a10_ehci_probe),
|
|
DEVMETHOD(device_attach, a10_ehci_attach),
|
|
DEVMETHOD(device_detach, a10_ehci_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_driver = {
|
|
.name = "ehci",
|
|
.methods = ehci_methods,
|
|
.size = sizeof(ehci_softc_t),
|
|
};
|
|
|
|
static devclass_t ehci_devclass;
|
|
|
|
DRIVER_MODULE(ehci, simplebus, ehci_driver, ehci_devclass, 0, 0);
|
|
MODULE_DEPEND(ehci, usb, 1, 1, 1);
|