2 * Copyright (c) 2003-2012 Broadcom Corporation
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
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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
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
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28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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>
42 #include <asm/netlogic/haldefs.h>
43 #include <asm/netlogic/xlp-hal/iomap.h>
44 #include <asm/netlogic/xlp-hal/xlp.h>
47 * USB glue logic registers, used only during initialization
49 #define USB_CTL_0 0x01
50 #define USB_PHY_0 0x0A
51 #define USB_PHY_RESET 0x01
52 #define USB_PHY_PORT_RESET_0 0x10
53 #define USB_PHY_PORT_RESET_1 0x20
54 #define USB_CONTROLLER_RESET 0x01
55 #define USB_INT_STATUS 0x0E
56 #define USB_INT_EN 0x0F
57 #define USB_PHY_INTERRUPT_EN 0x01
58 #define USB_OHCI_INTERRUPT_EN 0x02
59 #define USB_OHCI_INTERRUPT1_EN 0x04
60 #define USB_OHCI_INTERRUPT2_EN 0x08
61 #define USB_CTRL_INTERRUPT_EN 0x10
63 #define nlm_read_usb_reg(b, r) nlm_read_reg(b, r)
64 #define nlm_write_usb_reg(b, r, v) nlm_write_reg(b, r, v)
65 #define nlm_get_usb_pcibase(node, inst) \
66 nlm_pcicfg_base(XLP_IO_USB_OFFSET(node, inst))
67 #define nlm_get_usb_regbase(node, inst) \
68 (nlm_get_usb_pcibase(node, inst) + XLP_IO_PCI_HDRSZ)
70 static void nlm_usb_intr_en(int node, int port)
75 port_addr = nlm_get_usb_regbase(node, port);
76 val = nlm_read_usb_reg(port_addr, USB_INT_EN);
77 val = USB_CTRL_INTERRUPT_EN | USB_OHCI_INTERRUPT_EN |
78 USB_OHCI_INTERRUPT1_EN | USB_CTRL_INTERRUPT_EN |
79 USB_OHCI_INTERRUPT_EN | USB_OHCI_INTERRUPT2_EN;
80 nlm_write_usb_reg(port_addr, USB_INT_EN, val);
83 static void nlm_usb_hw_reset(int node, int port)
89 port_addr = nlm_get_usb_regbase(node, port);
90 val = nlm_read_usb_reg(port_addr, USB_PHY_0);
91 val &= ~(USB_PHY_RESET | USB_PHY_PORT_RESET_0 | USB_PHY_PORT_RESET_1);
92 nlm_write_usb_reg(port_addr, USB_PHY_0, val);
95 val = nlm_read_usb_reg(port_addr, USB_CTL_0);
96 val &= ~(USB_CONTROLLER_RESET);
98 nlm_write_usb_reg(port_addr, USB_CTL_0, val);
101 static int __init nlm_platform_usb_init(void)
103 pr_info("Initializing USB Interface\n");
104 nlm_usb_hw_reset(0, 0);
105 nlm_usb_hw_reset(0, 3);
107 /* Enable PHY interrupts */
108 nlm_usb_intr_en(0, 0);
109 nlm_usb_intr_en(0, 3);
114 arch_initcall(nlm_platform_usb_init);
116 static u64 xlp_usb_dmamask = ~(u32)0;
118 /* Fixup the IRQ for USB devices which is exist on XLP SOC PCIE bus */
119 static void nlm_usb_fixup_final(struct pci_dev *dev)
121 dev->dev.dma_mask = &xlp_usb_dmamask;
122 dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
123 switch (dev->devfn) {
125 dev->irq = PIC_EHCI_0_IRQ;
128 dev->irq = PIC_OHCI_0_IRQ;
131 dev->irq = PIC_OHCI_1_IRQ;
134 dev->irq = PIC_EHCI_1_IRQ;
137 dev->irq = PIC_OHCI_2_IRQ;
140 dev->irq = PIC_OHCI_3_IRQ;
144 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_EHCI,
145 nlm_usb_fixup_final);
146 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_OHCI,
147 nlm_usb_fixup_final);