aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mips/loongson/common/cs5536/cs5536_ide.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/loongson/common/cs5536/cs5536_ide.c')
-rw-r--r--arch/mips/loongson/common/cs5536/cs5536_ide.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/arch/mips/loongson/common/cs5536/cs5536_ide.c b/arch/mips/loongson/common/cs5536/cs5536_ide.c
new file mode 100644
index 000000000000..3f61594b3884
--- /dev/null
+++ b/arch/mips/loongson/common/cs5536/cs5536_ide.c
@@ -0,0 +1,179 @@
1/*
2 * the IDE 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.
8 * Author: Wu Zhangjin, wuzj@lemote.com
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_ide_write_reg(int reg, u32 value)
20{
21 u32 hi = 0, lo = value;
22
23 switch (reg) {
24 case PCI_COMMAND:
25 _rdmsr(GLIU_MSR_REG(GLIU_PAE), &hi, &lo);
26 if (value & PCI_COMMAND_MASTER)
27 lo |= (0x03 << 4);
28 else
29 lo &= ~(0x03 << 4);
30 _wrmsr(GLIU_MSR_REG(GLIU_PAE), hi, lo);
31 break;
32 case PCI_STATUS:
33 if (value & PCI_STATUS_PARITY) {
34 _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo);
35 if (lo & SB_PARE_ERR_FLAG) {
36 lo = (lo & 0x0000ffff) | SB_PARE_ERR_FLAG;
37 _wrmsr(SB_MSR_REG(SB_ERROR), hi, lo);
38 }
39 }
40 break;
41 case PCI_CACHE_LINE_SIZE:
42 value &= 0x0000ff00;
43 _rdmsr(SB_MSR_REG(SB_CTRL), &hi, &lo);
44 hi &= 0xffffff00;
45 hi |= (value >> 8);
46 _wrmsr(SB_MSR_REG(SB_CTRL), hi, lo);
47 break;
48 case PCI_BAR4_REG:
49 if (value == PCI_BAR_RANGE_MASK) {
50 _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo);
51 lo |= SOFT_BAR_IDE_FLAG;
52 _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
53 } else if (value & 0x01) {
54 lo = (value & 0xfffffff0) | 0x1;
55 _wrmsr(IDE_MSR_REG(IDE_IO_BAR), hi, lo);
56
57 value &= 0xfffffffc;
58 hi = 0x60000000 | ((value & 0x000ff000) >> 12);
59 lo = 0x000ffff0 | ((value & 0x00000fff) << 20);
60 _wrmsr(GLIU_MSR_REG(GLIU_IOD_BM2), hi, lo);
61 }
62 break;
63 case PCI_IDE_CFG_REG:
64 if (value == CS5536_IDE_FLASH_SIGNATURE) {
65 _rdmsr(DIVIL_MSR_REG(DIVIL_BALL_OPTS), &hi, &lo);
66 lo |= 0x01;
67 _wrmsr(DIVIL_MSR_REG(DIVIL_BALL_OPTS), hi, lo);
68 } else
69 _wrmsr(IDE_MSR_REG(IDE_CFG), hi, lo);
70 break;
71 case PCI_IDE_DTC_REG:
72 _wrmsr(IDE_MSR_REG(IDE_DTC), hi, lo);
73 break;
74 case PCI_IDE_CAST_REG:
75 _wrmsr(IDE_MSR_REG(IDE_CAST), hi, lo);
76 break;
77 case PCI_IDE_ETC_REG:
78 _wrmsr(IDE_MSR_REG(IDE_ETC), hi, lo);
79 break;
80 case PCI_IDE_PM_REG:
81 _wrmsr(IDE_MSR_REG(IDE_INTERNAL_PM), hi, lo);
82 break;
83 default:
84 break;
85 }
86}
87
88u32 pci_ide_read_reg(int reg)
89{
90 u32 conf_data = 0;
91 u32 hi, lo;
92
93 switch (reg) {
94 case PCI_VENDOR_ID:
95 conf_data =
96 CFG_PCI_VENDOR_ID(CS5536_IDE_DEVICE_ID, CS5536_VENDOR_ID);
97 break;
98 case PCI_COMMAND:
99 _rdmsr(IDE_MSR_REG(IDE_IO_BAR), &hi, &lo);
100 if (lo & 0xfffffff0)
101 conf_data |= PCI_COMMAND_IO;
102 _rdmsr(GLIU_MSR_REG(GLIU_PAE), &hi, &lo);
103 if ((lo & 0x30) == 0x30)
104 conf_data |= PCI_COMMAND_MASTER;
105 break;
106 case PCI_STATUS:
107 conf_data |= PCI_STATUS_66MHZ;
108 conf_data |= PCI_STATUS_FAST_BACK;
109 _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo);
110 if (lo & SB_PARE_ERR_FLAG)
111 conf_data |= PCI_STATUS_PARITY;
112 conf_data |= PCI_STATUS_DEVSEL_MEDIUM;
113 break;
114 case PCI_CLASS_REVISION:
115 _rdmsr(IDE_MSR_REG(IDE_CAP), &hi, &lo);
116 conf_data = lo & 0x000000ff;
117 conf_data |= (CS5536_IDE_CLASS_CODE << 8);
118 break;
119 case PCI_CACHE_LINE_SIZE:
120 _rdmsr(SB_MSR_REG(SB_CTRL), &hi, &lo);
121 hi &= 0x000000f8;
122 conf_data = CFG_PCI_CACHE_LINE_SIZE(PCI_NORMAL_HEADER_TYPE, hi);
123 break;
124 case PCI_BAR4_REG:
125 _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo);
126 if (lo & SOFT_BAR_IDE_FLAG) {
127 conf_data = CS5536_IDE_RANGE |
128 PCI_BASE_ADDRESS_SPACE_IO;
129 lo &= ~SOFT_BAR_IDE_FLAG;
130 _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
131 } else {
132 _rdmsr(IDE_MSR_REG(IDE_IO_BAR), &hi, &lo);
133 conf_data = lo & 0xfffffff0;
134 conf_data |= 0x01;
135 conf_data &= ~0x02;
136 }
137 break;
138 case PCI_CARDBUS_CIS:
139 conf_data = PCI_CARDBUS_CIS_POINTER;
140 break;
141 case PCI_SUBSYSTEM_VENDOR_ID:
142 conf_data =
143 CFG_PCI_VENDOR_ID(CS5536_IDE_SUB_ID, CS5536_SUB_VENDOR_ID);
144 break;
145 case PCI_ROM_ADDRESS:
146 conf_data = PCI_EXPANSION_ROM_BAR;
147 break;
148 case PCI_CAPABILITY_LIST:
149 conf_data = PCI_CAPLIST_POINTER;
150 break;
151 case PCI_INTERRUPT_LINE:
152 conf_data =
153 CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_IDE_INTR);
154 break;
155 case PCI_IDE_CFG_REG:
156 _rdmsr(IDE_MSR_REG(IDE_CFG), &hi, &lo);
157 conf_data = lo;
158 break;
159 case PCI_IDE_DTC_REG:
160 _rdmsr(IDE_MSR_REG(IDE_DTC), &hi, &lo);
161 conf_data = lo;
162 break;
163 case PCI_IDE_CAST_REG:
164 _rdmsr(IDE_MSR_REG(IDE_CAST), &hi, &lo);
165 conf_data = lo;
166 break;
167 case PCI_IDE_ETC_REG:
168 _rdmsr(IDE_MSR_REG(IDE_ETC), &hi, &lo);
169 conf_data = lo;
170 case PCI_IDE_PM_REG:
171 _rdmsr(IDE_MSR_REG(IDE_INTERNAL_PM), &hi, &lo);
172 conf_data = lo;
173 break;
174 default:
175 break;
176 }
177
178 return conf_data;
179}
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-03 22:22:05 -0400