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/9.1/sys/mips/nlm/usb_init.c 225394 2011-09-05 10:45:29Z 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/cpuinfo.h>
40 #include <mips/nlm/hal/usb.h>
41
42 #include <mips/nlm/xlp.h>
43
44
45 static void
46 nlm_usb_intr_en(int node, int port)
47 {
48 uint32_t val;
49 uint64_t port_addr;
50
51 port_addr = nlm_get_usb_regbase(node, port);
52 val = nlm_read_usb_reg(port_addr, USB_INT_EN);
53 val = USB_CTRL_INTERRUPT_EN | USB_OHCI_INTERRUPT_EN |
54 USB_OHCI_INTERRUPT1_EN | USB_CTRL_INTERRUPT_EN |
55 USB_OHCI_INTERRUPT_EN | USB_OHCI_INTERRUPT2_EN;
56 nlm_write_usb_reg(port_addr, USB_INT_EN, val);
57 }
58
59 static void
60 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 DELAY(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 void
79 nlm_usb_init(void)
80 {
81 /* XXX: should be checking if these are in Device mode here */
82 printf("Initialize USB Interface\n");
83 nlm_usb_hw_reset(0, 0);
84 nlm_usb_hw_reset(0, 3);
85
86 /* Enable PHY interrupts */
87 nlm_usb_intr_en(0, 0);
88 nlm_usb_intr_en(0, 3);
89 }
90
91 SYSINIT(nlm_usb_init, SI_SUB_CPU, SI_ORDER_MIDDLE,
92 nlm_usb_init, NULL);
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