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/*
* Copyright (c) 2009-2012 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <machine/rtems-bsd-kernel-space.h>
#include <bsp.h>
#if defined(__GEN83xx_BSP_h) || defined(LIBBSP_POWERPC_QORIQ_BSP_H)
#include <bsp/irq.h>
#include <bsp/utility.h>
#ifdef __GEN83xx_BSP_h
#include <mpc83xx/mpc83xx.h>
#define BSP_EHCI_REGISTER_BASE_ADDR ((unsigned) &mpc83xx.usb_dr.caplength)
#define BSP_EHCI_IRQ_VECTOR BSP_IPIC_IRQ_USB_DR
#endif
#ifdef LIBBSP_POWERPC_QORIQ_BSP_H
#include <bsp/qoriq.h>
#define BSP_EHCI_REGISTER_BASE_ADDR ((unsigned) &qoriq.usb_1 + 0x100)
#define BSP_EHCI_IRQ_VECTOR QORIQ_IRQ_USB_1
#endif
#include <sys/cdefs.h>
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <rtems/bsd/sys/param.h>
#include <sys/queue.h>
#include <rtems/bsd/sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/linker_set.h>
#include <sys/module.h>
#include <rtems/bsd/sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <rtems/bsd/sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.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>
static device_probe_t ehci_mpc83xx_probe;
static device_attach_t ehci_mpc83xx_attach;
static device_detach_t ehci_mpc83xx_detach;
static device_suspend_t ehci_mpc83xx_suspend;
static device_resume_t ehci_mpc83xx_resume;
static int
ehci_mpc83xx_suspend(device_t self)
{
ehci_softc_t *e = device_get_softc(self);
int eno = bus_generic_suspend(self);
if (eno != 0) {
return (eno);
}
ehci_suspend(e);
return (0);
}
static int
ehci_mpc83xx_resume(device_t self)
{
ehci_softc_t *e = device_get_softc(self);
ehci_resume(e);
bus_generic_resume(self);
return (0);
}
static int
ehci_mpc83xx_probe(device_t self)
{
device_set_desc(self, "EHCI");
return (0);
}
#define CONTROL_ULPI_INT_EN BSP_BBIT32(31)
#define CONTROL_WU_INT_EN BSP_BBIT32(30)
#define CONTROL_USB_EN BSP_BBIT32(29)
#define CONTROL_LSF_EN BSP_BBIT32(28)
#define CONTROL_KEEP_OTG_ON BSP_BBIT32(27)
#define CONTROL_OTG_PORT BSP_BBIT32(26)
#define CONTROL_REFSEL(val) BSP_BFLD32(val, 24, 25)
#define CONTROL_PLL_RESET BSP_BBIT32(23)
#define CONTROL_UTMI_PHY_EN BSP_BBIT32(22)
#define CONTROL_PHY_CLOCK_SEL BSP_BBIT32(21)
#define CONTROL_CLKIN_SEL(val) BSP_BFLD32(val, 19, 20)
#define CONTROL_WU_INT BSP_BBIT32(15)
#define CONTROL_PHY_CLK_VALID BSP_BBIT32(14)
static void
ehci_mpc83xx_phy_init(void)
{
#ifdef __GEN83xx_BSP_h
volatile uint32_t *control = &mpc83xx.usb_dr.control;
*control = CONTROL_PLL_RESET | CONTROL_REFSEL(0x2U);
*control = CONTROL_UTMI_PHY_EN | CONTROL_REFSEL(0x2U);
while ((*control & CONTROL_PHY_CLK_VALID) == 0) {
/* Wait for PLL */
}
#endif
}
#define USBMODE_SDIS BSP_BIT32(4)
#define USBMODE_SLOM BSP_BIT32(3)
#define USBMODE_CM_IDLE BSP_FLD32(0x0, 0, 1)
#define USBMODE_CM_DEVICE BSP_FLD32(0x2, 0, 1)
#define USBMODE_CM_HOST BSP_FLD32(0x3, 0, 1)
#define PORTSC_PTS(val) BSP_FLD32(val, 30, 31)
#define PORTSC_PTS_UTMI PORTSC_PTS(0x0)
#define PORTSC_PTS_ULPI PORTSC_PTS(0x2)
#define PORTSC_PE BSP_BIT32(2)
#define SNOOP_ADDR(val) BSP_BFLD32(val, 0, 19)
#define SNOOP_ENABLE(val) BSP_BFLD32(val, 27, 31)
#define SNOOP_SIZE_2GB SNOOP_ENABLE(0x1e)
static void
ehci_mpc83xx_host_init(void)
{
#ifdef __GEN83xx_BSP_h
mpc83xx.usb_dr.snoop1 = SNOOP_ADDR(0x0) | SNOOP_SIZE_2GB;
mpc83xx.usb_dr.snoop2 = SNOOP_ADDR(0x80000) | SNOOP_SIZE_2GB;
mpc83xx.usb_dr.control = CONTROL_UTMI_PHY_EN | CONTROL_REFSEL(0x2) | CONTROL_USB_EN;
mpc83xx.usb_dr.portsc1 = htole32(PORTSC_PTS_UTMI);
#if 0
mpc83xx.usb_dr.pri_ctrl = 0xcU;
mpc83xx.usb_dr.age_cnt_thresh = 0x40U;
mpc83xx.usb_dr.si_ctrl = 0x1U;
#endif
mpc83xx.usb_dr.usbmode = USBMODE_CM_HOST;
#endif
#ifdef LIBBSP_POWERPC_QORIQ_BSP_H
qoriq.usb_1.snoop1 = SNOOP_ADDR(0x0) | SNOOP_SIZE_2GB;
qoriq.usb_1.snoop2 = SNOOP_ADDR(0x80000) | SNOOP_SIZE_2GB;
qoriq.usb_1.control = CONTROL_USB_EN;
qoriq.usb_1.portsc1 = htole32(PORTSC_PTS_ULPI | BSP_BIT32(28) | PORTSC_PE);
qoriq.usb_1.usbmode = USBMODE_CM_HOST;
#endif
}
static int
ehci_mpc83xx_attach(device_t self)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
ehci_softc_t *e = device_get_softc(self);
usb_error_t ue = USB_ERR_NORMAL_COMPLETION;
int eno = 0;
memset(e, 0, sizeof(*e));
/* Initialize some bus fields */
e->sc_bus.parent = self;
e->sc_bus.devices = e->sc_devices;
e->sc_bus.devices_max = EHCI_MAX_DEVICES;
e->sc_bus.usbrev = USB_REV_2_0;
/* Get all DMA memory */
if (usb_bus_mem_alloc_all(&e->sc_bus, USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
return (ENOMEM);
}
/* Child device */
e->sc_bus.bdev = device_add_child(self, "usbus", -1);
if (e->sc_bus.bdev == NULL) {
device_printf(self, "Could not add USB device\n");
goto error;
}
device_set_ivars(e->sc_bus.bdev, &e->sc_bus);
device_set_desc(e->sc_bus.bdev, "EHCI");
snprintf(e->sc_vendor, sizeof(e->sc_vendor), "Freescale");
/* Register space */
e->sc_io_tag = 0;
e->sc_io_hdl = BSP_EHCI_REGISTER_BASE_ADDR;
e->sc_io_size = 0x88;
ehci_mpc83xx_phy_init();
ehci_mpc83xx_host_init();
/* Install interrupt handler */
sc = rtems_interrupt_server_handler_install(
RTEMS_ID_NONE,
BSP_EHCI_IRQ_VECTOR,
"USB",
RTEMS_INTERRUPT_UNIQUE,
(rtems_interrupt_handler) ehci_interrupt,
e
);
BSD_ASSERT_SC(sc);
e->sc_flags |= EHCI_SCFLG_SETMODE | EHCI_SCFLG_NORESTERM | EHCI_SCFLG_TT;
/* EHCI intitialization */
ue = ehci_init(e);
if (ue != USB_ERR_NORMAL_COMPLETION) {
goto error;
}
/* Probe and attach child */
eno = device_probe_and_attach(e->sc_bus.bdev);
if (eno != 0) {
goto error;
}
return (0);
error:
ehci_mpc83xx_detach(self);
return (ENXIO);
}
static int
ehci_mpc83xx_detach(device_t self)
{
BSD_PRINTF("TODO\n");
return (0);
}
static device_method_t ehci_methods [] = {
/* Device interface */
DEVMETHOD(device_probe, ehci_mpc83xx_probe),
DEVMETHOD(device_attach, ehci_mpc83xx_attach),
DEVMETHOD(device_detach, ehci_mpc83xx_detach),
DEVMETHOD(device_suspend, ehci_mpc83xx_suspend),
DEVMETHOD(device_resume, ehci_mpc83xx_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
{0, 0}
};
static driver_t ehci_driver = {
.name = "ehci",
.methods = ehci_methods,
.size = sizeof(struct ehci_softc)
};
static devclass_t ehci_devclass;
DRIVER_MODULE(ehci, nexus, ehci_driver, ehci_devclass, 0, 0);
MODULE_DEPEND(ehci, usb, 1, 1, 1);
#endif /* defined(__GEN83xx_BSP_h) || defined(LIBBSP_POWERPC_QORIQ_BSP_H) */
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