Print this page
acpica-unix2-20130823
PANKOVs restructure
| Split |
Close |
| Expand all |
| Collapse all |
--- old/usr/src/uts/intel/io/acpica/hardware/hwacpi.c
+++ new/usr/src/common/acpica/components/hardware/hwacpi.c
1 -
2 1 /******************************************************************************
3 2 *
4 3 * Module Name: hwacpi - ACPI Hardware Initialization/Mode Interface
5 4 *
6 5 *****************************************************************************/
7 6
8 7 /*
9 - * Copyright (C) 2000 - 2011, Intel Corp.
8 + * Copyright (C) 2000 - 2013, Intel Corp.
10 9 * All rights reserved.
11 10 *
12 11 * Redistribution and use in source and binary forms, with or without
13 12 * modification, are permitted provided that the following conditions
14 13 * are met:
15 14 * 1. Redistributions of source code must retain the above copyright
16 15 * notice, this list of conditions, and the following disclaimer,
17 16 * without modification.
18 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 18 * substantially similar to the "NO WARRANTY" disclaimer below
20 19 * ("Disclaimer") and any redistribution must be conditioned upon
21 20 * including a substantially similar Disclaimer requirement for further
22 21 * binary redistribution.
23 22 * 3. Neither the names of the above-listed copyright holders nor the names
24 23 * of any contributors may be used to endorse or promote products derived
25 24 * from this software without specific prior written permission.
26 25 *
27 26 * Alternatively, this software may be distributed under the terms of the
28 27 * GNU General Public License ("GPL") version 2 as published by the Free
29 28 * Software Foundation.
30 29 *
31 30 * NO WARRANTY
32 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 41 * POSSIBILITY OF SUCH DAMAGES.
43 42 */
44 43
|
↓ open down ↓ |
25 lines elided |
↑ open up ↑ |
45 44 #define __HWACPI_C__
46 45
47 46 #include "acpi.h"
48 47 #include "accommon.h"
49 48
50 49
51 50 #define _COMPONENT ACPI_HARDWARE
52 51 ACPI_MODULE_NAME ("hwacpi")
53 52
54 53
54 +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */
55 55 /******************************************************************************
56 56 *
57 57 * FUNCTION: AcpiHwSetMode
58 58 *
59 59 * PARAMETERS: Mode - SYS_MODE_ACPI or SYS_MODE_LEGACY
60 60 *
61 61 * RETURN: Status
62 62 *
63 63 * DESCRIPTION: Transitions the system into the requested mode.
64 64 *
65 65 ******************************************************************************/
66 66
67 67 ACPI_STATUS
|
↓ open down ↓ |
3 lines elided |
↑ open up ↑ |
68 68 AcpiHwSetMode (
69 69 UINT32 Mode)
70 70 {
71 71
72 72 ACPI_STATUS Status;
73 73 UINT32 Retry;
74 74
75 75
76 76 ACPI_FUNCTION_TRACE (HwSetMode);
77 77
78 +
79 + /* If the Hardware Reduced flag is set, machine is always in acpi mode */
80 +
81 + if (AcpiGbl_ReducedHardware)
82 + {
83 + return_ACPI_STATUS (AE_OK);
84 + }
85 +
78 86 /*
79 87 * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
80 88 * system does not support mode transition.
81 89 */
82 90 if (!AcpiGbl_FADT.SmiCommand)
83 91 {
84 92 ACPI_ERROR ((AE_INFO, "No SMI_CMD in FADT, mode transition failed"));
85 93 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
86 94 }
87 95
88 96 /*
89 97 * ACPI 2.0 clarified the meaning of ACPI_ENABLE and ACPI_DISABLE
90 98 * in FADT: If it is zero, enabling or disabling is not supported.
91 99 * As old systems may have used zero for mode transition,
92 100 * we make sure both the numbers are zero to determine these
93 101 * transitions are not supported.
94 102 */
95 103 if (!AcpiGbl_FADT.AcpiEnable && !AcpiGbl_FADT.AcpiDisable)
96 104 {
97 105 ACPI_ERROR ((AE_INFO,
98 106 "No ACPI mode transition supported in this system "
99 107 "(enable/disable both zero)"));
100 108 return_ACPI_STATUS (AE_OK);
101 109 }
102 110
103 111 switch (Mode)
104 112 {
|
↓ open down ↓ |
17 lines elided |
↑ open up ↑ |
105 113 case ACPI_SYS_MODE_ACPI:
106 114
107 115 /* BIOS should have disabled ALL fixed and GP events */
108 116
109 117 Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand,
110 118 (UINT32) AcpiGbl_FADT.AcpiEnable, 8);
111 119 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Attempting to enable ACPI mode\n"));
112 120 break;
113 121
114 122 case ACPI_SYS_MODE_LEGACY:
115 -
116 123 /*
117 124 * BIOS should clear all fixed status bits and restore fixed event
118 125 * enable bits to default
119 126 */
120 127 Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand,
121 128 (UINT32) AcpiGbl_FADT.AcpiDisable, 8);
122 129 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
123 130 "Attempting to enable Legacy (non-ACPI) mode\n"));
124 131 break;
125 132
126 133 default:
134 +
127 135 return_ACPI_STATUS (AE_BAD_PARAMETER);
128 136 }
129 137
130 138 if (ACPI_FAILURE (Status))
131 139 {
132 140 ACPI_EXCEPTION ((AE_INFO, Status,
133 141 "Could not write ACPI mode change"));
134 142 return_ACPI_STATUS (Status);
135 143 }
136 144
137 145 /*
138 146 * Some hardware takes a LONG time to switch modes. Give them 3 sec to
139 147 * do so, but allow faster systems to proceed more quickly.
140 148 */
141 149 Retry = 3000;
142 150 while (Retry)
143 151 {
144 - if (AcpiHwGetMode() == Mode)
152 + if (AcpiHwGetMode () == Mode)
145 153 {
146 154 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Mode %X successfully enabled\n",
147 155 Mode));
148 156 return_ACPI_STATUS (AE_OK);
149 157 }
150 - AcpiOsStall(1000);
158 + AcpiOsStall (ACPI_USEC_PER_MSEC);
151 159 Retry--;
152 160 }
153 161
154 162 ACPI_ERROR ((AE_INFO, "Hardware did not change modes"));
155 163 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
156 164 }
157 165
158 166
159 167 /*******************************************************************************
160 168 *
161 169 * FUNCTION: AcpiHwGetMode
162 170 *
163 171 * PARAMETERS: none
164 172 *
165 173 * RETURN: SYS_MODE_ACPI or SYS_MODE_LEGACY
166 174 *
167 - * DESCRIPTION: Return current operating state of system. Determined by
175 + * DESCRIPTION: Return current operating state of system. Determined by
168 176 * querying the SCI_EN bit.
169 177 *
170 178 ******************************************************************************/
171 179
172 180 UINT32
173 181 AcpiHwGetMode (
174 182 void)
175 183 {
176 184 ACPI_STATUS Status;
177 185 UINT32 Value;
178 186
179 187
180 188 ACPI_FUNCTION_TRACE (HwGetMode);
181 189
182 190
191 + /* If the Hardware Reduced flag is set, machine is always in acpi mode */
192 +
193 + if (AcpiGbl_ReducedHardware)
194 + {
195 + return_UINT32 (ACPI_SYS_MODE_ACPI);
196 + }
197 +
183 198 /*
184 199 * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
185 200 * system does not support mode transition.
186 201 */
187 202 if (!AcpiGbl_FADT.SmiCommand)
188 203 {
189 204 return_UINT32 (ACPI_SYS_MODE_ACPI);
190 205 }
191 206
192 207 Status = AcpiReadBitRegister (ACPI_BITREG_SCI_ENABLE, &Value);
193 208 if (ACPI_FAILURE (Status))
194 209 {
195 210 return_UINT32 (ACPI_SYS_MODE_LEGACY);
196 211 }
|
↓ open down ↓ |
4 lines elided |
↑ open up ↑ |
197 212
198 213 if (Value)
199 214 {
200 215 return_UINT32 (ACPI_SYS_MODE_ACPI);
201 216 }
202 217 else
203 218 {
204 219 return_UINT32 (ACPI_SYS_MODE_LEGACY);
205 220 }
206 221 }
222 +
223 +#endif /* !ACPI_REDUCED_HARDWARE */
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX