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path: root/drivers/acpi/hardware/hwacpi.c
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Diffstat (limited to 'drivers/acpi/hardware/hwacpi.c')
-rw-r--r--drivers/acpi/hardware/hwacpi.c56
1 files changed, 9 insertions, 47 deletions
diff --git a/drivers/acpi/hardware/hwacpi.c b/drivers/acpi/hardware/hwacpi.c
index de50fab2a910..6031ca13dd2f 100644
--- a/drivers/acpi/hardware/hwacpi.c
+++ b/drivers/acpi/hardware/hwacpi.c
@@ -6,7 +6,7 @@
6 *****************************************************************************/ 6 *****************************************************************************/
7 7
8/* 8/*
9 * Copyright (C) 2000 - 2006, R. Byron Moore 9 * Copyright (C) 2000 - 2007, R. Byron Moore
10 * All rights reserved. 10 * All rights reserved.
11 * 11 *
12 * Redistribution and use in source and binary forms, with or without 12 * Redistribution and use in source and binary forms, with or without
@@ -49,41 +49,6 @@ ACPI_MODULE_NAME("hwacpi")
49 49
50/****************************************************************************** 50/******************************************************************************
51 * 51 *
52 * FUNCTION: acpi_hw_initialize
53 *
54 * PARAMETERS: None
55 *
56 * RETURN: Status
57 *
58 * DESCRIPTION: Initialize and validate the various ACPI registers defined in
59 * the FADT.
60 *
61 ******************************************************************************/
62acpi_status acpi_hw_initialize(void)
63{
64 acpi_status status;
65
66 ACPI_FUNCTION_TRACE(hw_initialize);
67
68 /* We must have the ACPI tables by the time we get here */
69
70 if (!acpi_gbl_FADT) {
71 ACPI_ERROR((AE_INFO, "No FADT is present"));
72 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
73 }
74
75 /* Sanity check the FADT for valid values */
76
77 status = acpi_ut_validate_fadt();
78 if (ACPI_FAILURE(status)) {
79 return_ACPI_STATUS(status);
80 }
81
82 return_ACPI_STATUS(AE_OK);
83}
84
85/******************************************************************************
86 *
87 * FUNCTION: acpi_hw_set_mode 52 * FUNCTION: acpi_hw_set_mode
88 * 53 *
89 * PARAMETERS: Mode - SYS_MODE_ACPI or SYS_MODE_LEGACY 54 * PARAMETERS: Mode - SYS_MODE_ACPI or SYS_MODE_LEGACY
@@ -93,7 +58,6 @@ acpi_status acpi_hw_initialize(void)
93 * DESCRIPTION: Transitions the system into the requested mode. 58 * DESCRIPTION: Transitions the system into the requested mode.
94 * 59 *
95 ******************************************************************************/ 60 ******************************************************************************/
96
97acpi_status acpi_hw_set_mode(u32 mode) 61acpi_status acpi_hw_set_mode(u32 mode)
98{ 62{
99 63
@@ -106,7 +70,7 @@ acpi_status acpi_hw_set_mode(u32 mode)
106 * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, 70 * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
107 * system does not support mode transition. 71 * system does not support mode transition.
108 */ 72 */
109 if (!acpi_gbl_FADT->smi_cmd) { 73 if (!acpi_gbl_FADT.smi_command) {
110 ACPI_ERROR((AE_INFO, 74 ACPI_ERROR((AE_INFO,
111 "No SMI_CMD in FADT, mode transition failed")); 75 "No SMI_CMD in FADT, mode transition failed"));
112 return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE); 76 return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
@@ -119,7 +83,7 @@ acpi_status acpi_hw_set_mode(u32 mode)
119 * we make sure both the numbers are zero to determine these 83 * we make sure both the numbers are zero to determine these
120 * transitions are not supported. 84 * transitions are not supported.
121 */ 85 */
122 if (!acpi_gbl_FADT->acpi_enable && !acpi_gbl_FADT->acpi_disable) { 86 if (!acpi_gbl_FADT.acpi_enable && !acpi_gbl_FADT.acpi_disable) {
123 ACPI_ERROR((AE_INFO, 87 ACPI_ERROR((AE_INFO,
124 "No ACPI mode transition supported in this system (enable/disable both zero)")); 88 "No ACPI mode transition supported in this system (enable/disable both zero)"));
125 return_ACPI_STATUS(AE_OK); 89 return_ACPI_STATUS(AE_OK);
@@ -130,9 +94,8 @@ acpi_status acpi_hw_set_mode(u32 mode)
130 94
131 /* BIOS should have disabled ALL fixed and GP events */ 95 /* BIOS should have disabled ALL fixed and GP events */
132 96
133 status = acpi_os_write_port(acpi_gbl_FADT->smi_cmd, 97 status = acpi_os_write_port(acpi_gbl_FADT.smi_command,
134 (u32) acpi_gbl_FADT->acpi_enable, 98 (u32) acpi_gbl_FADT.acpi_enable, 8);
135 8);
136 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 99 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
137 "Attempting to enable ACPI mode\n")); 100 "Attempting to enable ACPI mode\n"));
138 break; 101 break;
@@ -143,8 +106,8 @@ acpi_status acpi_hw_set_mode(u32 mode)
143 * BIOS should clear all fixed status bits and restore fixed event 106 * BIOS should clear all fixed status bits and restore fixed event
144 * enable bits to default 107 * enable bits to default
145 */ 108 */
146 status = acpi_os_write_port(acpi_gbl_FADT->smi_cmd, 109 status = acpi_os_write_port(acpi_gbl_FADT.smi_command,
147 (u32) acpi_gbl_FADT->acpi_disable, 110 (u32) acpi_gbl_FADT.acpi_disable,
148 8); 111 8);
149 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 112 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
150 "Attempting to enable Legacy (non-ACPI) mode\n")); 113 "Attempting to enable Legacy (non-ACPI) mode\n"));
@@ -204,12 +167,11 @@ u32 acpi_hw_get_mode(void)
204 * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, 167 * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
205 * system does not support mode transition. 168 * system does not support mode transition.
206 */ 169 */
207 if (!acpi_gbl_FADT->smi_cmd) { 170 if (!acpi_gbl_FADT.smi_command) {
208 return_UINT32(ACPI_SYS_MODE_ACPI); 171 return_UINT32(ACPI_SYS_MODE_ACPI);
209 } 172 }
210 173
211 status = 174 status = acpi_get_register(ACPI_BITREG_SCI_ENABLE, &value);
212 acpi_get_register(ACPI_BITREG_SCI_ENABLE, &value, ACPI_MTX_LOCK);
213 if (ACPI_FAILURE(status)) { 175 if (ACPI_FAILURE(status)) {
214 return_UINT32(ACPI_SYS_MODE_LEGACY); 176 return_UINT32(ACPI_SYS_MODE_LEGACY);
215 } 177 }