arch/mips/netlogic/xlp/usb-init.c

   1 /*
   2  * Copyright (c) 2003-2012 Broadcom Corporation
   3  * All Rights Reserved
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the Broadcom
   9  * license below:
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  *
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in
  19  *    the documentation and/or other materials provided with the
  20  *    distribution.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  29  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  31  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  32  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <linux/dma-mapping.h>
  36 #include <linux/kernel.h>
  37 #include <linux/delay.h>
  38 #include <linux/init.h>
  39 #include <linux/pci.h>
  40 #include <linux/platform_device.h>
  41
  42 #include <asm/netlogic/haldefs.h>
  43 #include <asm/netlogic/xlp-hal/iomap.h>
  44 #include <asm/netlogic/xlp-hal/xlp.h>
  45 #include <asm/netlogic/xlp-hal/usb.h>
  46
  47 static void nlm_usb_intr_en(int node, int port)
  48 {
  49         uint32_t val;
  50         uint64_t port_addr;
  51
  52         port_addr = nlm_get_usb_regbase(node, port);
  53         val = nlm_read_usb_reg(port_addr, USB_INT_EN);
  54         val = USB_CTRL_INTERRUPT_EN  | USB_OHCI_INTERRUPT_EN |
  55                 USB_OHCI_INTERRUPT1_EN | USB_CTRL_INTERRUPT_EN  |
  56                 USB_OHCI_INTERRUPT_EN | USB_OHCI_INTERRUPT2_EN;
  57         nlm_write_usb_reg(port_addr, USB_INT_EN, val);
  58 }
  59
  60 static void nlm_usb_hw_reset(int node, int port)
  61 {
  62         uint64_t port_addr;
  63         uint32_t val;
  64
  65         /* reset USB phy */
  66         port_addr = nlm_get_usb_regbase(node, port);
  67         val = nlm_read_usb_reg(port_addr, USB_PHY_0);
  68         val &= ~(USB_PHY_RESET | USB_PHY_PORT_RESET_0 | USB_PHY_PORT_RESET_1);
  69         nlm_write_usb_reg(port_addr, USB_PHY_0, val);
  70
  71         mdelay(100);
  72         val = nlm_read_usb_reg(port_addr, USB_CTL_0);
  73         val &= ~(USB_CONTROLLER_RESET);
  74         val |= 0x4;
  75         nlm_write_usb_reg(port_addr, USB_CTL_0, val);
  76 }
  77
  78 static int __init nlm_platform_usb_init(void)
  79 {
  80         pr_info("Initializing USB Interface\n");
  81         nlm_usb_hw_reset(0, 0);
  82         nlm_usb_hw_reset(0, 3);
  83
  84         /* Enable PHY interrupts */
  85         nlm_usb_intr_en(0, 0);
  86         nlm_usb_intr_en(0, 3);
  87
  88         return 0;
  89 }
  90
  91 arch_initcall(nlm_platform_usb_init);
  92
  93 static u64 xlp_usb_dmamask = ~(u32)0;
  94
  95 /* Fixup the IRQ for USB devices which is exist on XLP SOC PCIE bus */
  96 static void nlm_usb_fixup_final(struct pci_dev *dev)
  97 {
  98         dev->dev.dma_mask               = &xlp_usb_dmamask;
  99         dev->dev.coherent_dma_mask      = DMA_BIT_MASK(64);
 100         switch (dev->devfn) {
 101         case 0x10:
 102                dev->irq = PIC_EHCI_0_IRQ;
 103                break;
 104         case 0x11:
 105                dev->irq = PIC_OHCI_0_IRQ;
 106                break;
 107         case 0x12:
 108                dev->irq = PIC_OHCI_1_IRQ;
 109                break;
 110         case 0x13:
 111                dev->irq = PIC_EHCI_1_IRQ;
 112                break;
 113         case 0x14:
 114                dev->irq = PIC_OHCI_2_IRQ;
 115                break;
 116         case 0x15:
 117                dev->irq = PIC_OHCI_3_IRQ;
 118                break;
 119         }
 120 }
 121 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_EHCI,
 122                 nlm_usb_fixup_final);
 123 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_OHCI,
 124                 nlm_usb_fixup_final);