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-rw-r--r--arch/mips/netlogic/xlp/usb-init.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/usb-init.c b/arch/mips/netlogic/xlp/usb-init.c
new file mode 100644
index 0000000..dbe083a
--- /dev/null
+++ b/arch/mips/netlogic/xlp/usb-init.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2003-2012 Broadcom Corporation
+ * All Rights Reserved
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the Broadcom
+ * license below:
+ *
+ * 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 BROADCOM ``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 BROADCOM 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.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+#include <asm/netlogic/xlp-hal/usb.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);
+
+ mdelay(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 int __init nlm_platform_usb_init(void)
+{
+ pr_info("Initializing 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);
+
+ return 0;
+}
+
+arch_initcall(nlm_platform_usb_init);
+
+static u64 xlp_usb_dmamask = ~(u32)0;
+
+/* Fixup the IRQ for USB devices which is exist on XLP SOC PCIE bus */
+static void nlm_usb_fixup_final(struct pci_dev *dev)
+{
+ dev->dev.dma_mask = &xlp_usb_dmamask;
+ dev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
+ switch (dev->devfn) {
+ case 0x10:
+ dev->irq = PIC_EHCI_0_IRQ;
+ break;
+ case 0x11:
+ dev->irq = PIC_OHCI_0_IRQ;
+ break;
+ case 0x12:
+ dev->irq = PIC_OHCI_1_IRQ;
+ break;
+ case 0x13:
+ dev->irq = PIC_EHCI_1_IRQ;
+ break;
+ case 0x14:
+ dev->irq = PIC_OHCI_2_IRQ;
+ break;
+ case 0x15:
+ dev->irq = PIC_OHCI_3_IRQ;
+ break;
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_EHCI,
+ nlm_usb_fixup_final);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_OHCI,
+ nlm_usb_fixup_final);