FreeBSD/Linux Kernel Cross Reference
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: releng/11.2/sys/mips/nlm/usb_init.c 331722 2018-03-29 02:50:57Z eadler $");
    #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);

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