The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/nlm/usb_init.c

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    1 /*-
    2  * Copyright 2003-2011 Netlogic Microsystems (Netlogic). All rights
    3  * reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions are
    7  * met:
    8  *
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in
   13  *    the documentation and/or other materials provided with the
   14  *    distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY Netlogic Microsystems ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE
   20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   26  * THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * NETLOGIC_BSD */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD: releng/10.2/sys/mips/nlm/usb_init.c 227725 2011-11-19 14:33:14Z jchandra $");
   32 #include <sys/types.h>
   33 #include <sys/systm.h>
   34 #include <sys/param.h>
   35 #include <sys/kernel.h>
   36 
   37 #include <mips/nlm/hal/haldefs.h>
   38 #include <mips/nlm/hal/iomap.h>
   39 #include <mips/nlm/hal/usb.h>
   40 
   41 #include <mips/nlm/xlp.h>
   42 
   43 
   44 static void
   45 nlm_usb_intr_en(int node, int port)
   46 {
   47         uint32_t val;
   48         uint64_t port_addr;
   49 
   50         port_addr = nlm_get_usb_regbase(node, port);    
   51         val = nlm_read_usb_reg(port_addr, USB_INT_EN);
   52         val = USB_CTRL_INTERRUPT_EN  | USB_OHCI_INTERRUPT_EN | 
   53                 USB_OHCI_INTERRUPT1_EN | USB_CTRL_INTERRUPT_EN  |
   54                 USB_OHCI_INTERRUPT_EN | USB_OHCI_INTERRUPT2_EN;
   55         nlm_write_usb_reg(port_addr, USB_INT_EN, val);
   56 }
   57 
   58 static void 
   59 nlm_usb_hw_reset(int node, int port)
   60 {
   61         uint64_t port_addr;
   62         uint32_t val;
   63                 
   64         /* reset USB phy */
   65         port_addr = nlm_get_usb_regbase(node, port); 
   66         val = nlm_read_usb_reg(port_addr, USB_PHY_0);
   67         val &= ~(USB_PHY_RESET | USB_PHY_PORT_RESET_0 | USB_PHY_PORT_RESET_1);
   68         nlm_write_usb_reg(port_addr, USB_PHY_0, val);
   69       
   70         DELAY(100);
   71         val = nlm_read_usb_reg(port_addr, USB_CTL_0);
   72         val &= ~(USB_CONTROLLER_RESET);
   73         val |= 0x4;
   74         nlm_write_usb_reg(port_addr, USB_CTL_0, val);
   75 }
   76 
   77 static void 
   78 nlm_usb_init(void)
   79 {
   80         /* XXX: should be checking if these are in Device mode here */
   81         printf("Initialize USB Interface\n");
   82         nlm_usb_hw_reset(0, 0); 
   83         nlm_usb_hw_reset(0, 3); 
   84 
   85         /* Enable PHY interrupts */
   86         nlm_usb_intr_en(0, 0); 
   87         nlm_usb_intr_en(0, 3); 
   88 }
   89 
   90 SYSINIT(nlm_usb_init, SI_SUB_CPU, SI_ORDER_MIDDLE,
   91     nlm_usb_init, NULL);

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