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gerrit-public.fairphone.software / kernel / msm-5.4 / 405ab01c70e18058d9c01a1256769a61fc65413e / . / arch / mips / loongson / common / cs5536 / cs5536_ehci.c
blob: 5b5cbba699b3fc0238dabc1dc46878e18b14df84 [file] [log] [blame]
Wu Zhangjin22c21002009-11-10 00:06:12 +0800[diff] [blame]1/*
2 * the EHCI Virtual Support Module of AMD CS5536
3 *
4 * Copyright (C) 2007 Lemote, Inc.
5 * Author : jlliu, liujl@lemote.com
6 *
7 * Copyright (C) 2009 Lemote, Inc.
Wu Zhangjinf7a904d2010-01-04 17:16:51 +0800[diff] [blame]8 * Author: Wu Zhangjin, wuzhangjin@gmail.com
Wu Zhangjin22c21002009-11-10 00:06:12 +0800[diff] [blame]9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16#include <cs5536/cs5536.h>
17#include <cs5536/cs5536_pci.h>
18
19void pci_ehci_write_reg(int reg, u32 value)
20{
21 u32 hi = 0, lo = value;
22
23 switch (reg) {
24 case PCI_COMMAND:
25 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
26 if (value & PCI_COMMAND_MASTER)
27 hi |= PCI_COMMAND_MASTER;
28 else
29 hi &= ~PCI_COMMAND_MASTER;
30
31 if (value & PCI_COMMAND_MEMORY)
32 hi |= PCI_COMMAND_MEMORY;
33 else
34 hi &= ~PCI_COMMAND_MEMORY;
35 _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo);
36 break;
37 case PCI_STATUS:
38 if (value & PCI_STATUS_PARITY) {
39 _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo);
40 if (lo & SB_PARE_ERR_FLAG) {
41 lo = (lo & 0x0000ffff) | SB_PARE_ERR_FLAG;
42 _wrmsr(SB_MSR_REG(SB_ERROR), hi, lo);
43 }
44 }
45 break;
46 case PCI_BAR0_REG:
47 if (value == PCI_BAR_RANGE_MASK) {
48 _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo);
49 lo |= SOFT_BAR_EHCI_FLAG;
50 _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
51 } else if ((value & 0x01) == 0x00) {
Wu Zhangjinf18b2f62010-05-19 09:12:17 +0800[diff] [blame]52 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
53 lo = value;
Wu Zhangjin22c21002009-11-10 00:06:12 +0800[diff] [blame]54 _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo);
55
56 value &= 0xfffffff0;
57 hi = 0x40000000 | ((value & 0xff000000) >> 24);
58 lo = 0x000fffff | ((value & 0x00fff000) << 8);
59 _wrmsr(GLIU_MSR_REG(GLIU_P2D_BM4), hi, lo);
60 }
61 break;
62 case PCI_EHCI_LEGSMIEN_REG:
63 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
64 hi &= 0x003f0000;
65 hi |= (value & 0x3f) << 16;
66 _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo);
67 break;
68 case PCI_EHCI_FLADJ_REG:
69 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
70 hi &= ~0x00003f00;
71 hi |= value & 0x00003f00;
72 _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo);
73 break;
74 default:
75 break;
76 }
77}
78
79u32 pci_ehci_read_reg(int reg)
80{
81 u32 conf_data = 0;
82 u32 hi, lo;
83
84 switch (reg) {
85 case PCI_VENDOR_ID:
86 conf_data =
87 CFG_PCI_VENDOR_ID(CS5536_EHCI_DEVICE_ID, CS5536_VENDOR_ID);
88 break;
89 case PCI_COMMAND:
90 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
91 if (hi & PCI_COMMAND_MASTER)
92 conf_data |= PCI_COMMAND_MASTER;
93 if (hi & PCI_COMMAND_MEMORY)
94 conf_data |= PCI_COMMAND_MEMORY;
95 break;
96 case PCI_STATUS:
97 conf_data |= PCI_STATUS_66MHZ;
98 conf_data |= PCI_STATUS_FAST_BACK;
99 _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo);
100 if (lo & SB_PARE_ERR_FLAG)
101 conf_data |= PCI_STATUS_PARITY;
102 conf_data |= PCI_STATUS_DEVSEL_MEDIUM;
103 break;
104 case PCI_CLASS_REVISION:
105 _rdmsr(USB_MSR_REG(USB_CAP), &hi, &lo);
106 conf_data = lo & 0x000000ff;
107 conf_data |= (CS5536_EHCI_CLASS_CODE << 8);
108 break;
109 case PCI_CACHE_LINE_SIZE:
110 conf_data =
111 CFG_PCI_CACHE_LINE_SIZE(PCI_NORMAL_HEADER_TYPE,
112 PCI_NORMAL_LATENCY_TIMER);
113 break;
114 case PCI_BAR0_REG:
115 _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo);
116 if (lo & SOFT_BAR_EHCI_FLAG) {
117 conf_data = CS5536_EHCI_RANGE |
118 PCI_BASE_ADDRESS_SPACE_MEMORY;
119 lo &= ~SOFT_BAR_EHCI_FLAG;
120 _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
121 } else {
122 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
123 conf_data = lo & 0xfffff000;
124 }
125 break;
126 case PCI_CARDBUS_CIS:
127 conf_data = PCI_CARDBUS_CIS_POINTER;
128 break;
129 case PCI_SUBSYSTEM_VENDOR_ID:
130 conf_data =
131 CFG_PCI_VENDOR_ID(CS5536_EHCI_SUB_ID, CS5536_SUB_VENDOR_ID);
132 break;
133 case PCI_ROM_ADDRESS:
134 conf_data = PCI_EXPANSION_ROM_BAR;
135 break;
136 case PCI_CAPABILITY_LIST:
137 conf_data = PCI_CAPLIST_USB_POINTER;
138 break;
139 case PCI_INTERRUPT_LINE:
140 conf_data =
141 CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_USB_INTR);
142 break;
143 case PCI_EHCI_LEGSMIEN_REG:
144 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
145 conf_data = (hi & 0x003f0000) >> 16;
146 break;
147 case PCI_EHCI_LEGSMISTS_REG:
148 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
149 conf_data = (hi & 0x3f000000) >> 24;
150 break;
151 case PCI_EHCI_FLADJ_REG:
152 _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
153 conf_data = hi & 0x00003f00;
154 break;
155 default:
156 break;
157 }
158
159 return conf_data;
160}