xref: /freebsd-11-stable/sys/mips/nlm/usb_init.c

/*-
 * Copyright 2003-2011 Netlogic Microsystems (Netlogic). 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 Netlogic Microsystems ``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 NETLOGIC 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.
 *
 * NETLOGIC_BSD */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/param.h>
#include <sys/kernel.h>

#include <mips/nlm/hal/haldefs.h>
#include <mips/nlm/hal/iomap.h>
#include <mips/nlm/hal/usb.h>

#include <mips/nlm/xlp.h>


static void
nlm_usb_intr_en(int node, int port)
{
	uint32_t val;
	uint64_t port_addr;

	port_addr = nlm_get_usb_regbase(node, port);
	val = nlm_read_usb_reg(port_addr, USB_INT_EN);
	val = USB_CTRL_INTERRUPT_EN  | USB_OHCI_INTERRUPT_EN |
		USB_OHCI_INTERRUPT1_EN | USB_CTRL_INTERRUPT_EN  |
		USB_OHCI_INTERRUPT_EN | USB_OHCI_INTERRUPT2_EN;
        nlm_write_usb_reg(port_addr, USB_INT_EN, val);
}

static void
nlm_usb_hw_reset(int node, int port)
{
	uint64_t port_addr;
	uint32_t val;

	/* reset USB phy */
	port_addr = nlm_get_usb_regbase(node, port);
	val = nlm_read_usb_reg(port_addr, USB_PHY_0);
	val &= ~(USB_PHY_RESET | USB_PHY_PORT_RESET_0 | USB_PHY_PORT_RESET_1);
	nlm_write_usb_reg(port_addr, USB_PHY_0, val);

	DELAY(100);
	val = nlm_read_usb_reg(port_addr, USB_CTL_0);
	val &= ~(USB_CONTROLLER_RESET);
	val |= 0x4;
	nlm_write_usb_reg(port_addr, USB_CTL_0, val);
}

static void
nlm_usb_init(void)
{
	/* XXX: should be checking if these are in Device mode here */
	printf("Initialize USB Interface\n");
	nlm_usb_hw_reset(0, 0);
	nlm_usb_hw_reset(0, 3);

	/* Enable PHY interrupts */
	nlm_usb_intr_en(0, 0);
	nlm_usb_intr_en(0, 3);
}

SYSINIT(nlm_usb_init, SI_SUB_CPU, SI_ORDER_MIDDLE,
    nlm_usb_init, NULL);