Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * acpi_osl.c - OS-dependent functions ($Revision: 83 $) |
| 3 | * |
| 4 | * Copyright (C) 2000 Andrew Henroid |
| 5 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
| 6 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
Matthew Wilcox | f1241c8 | 2008-03-14 13:43:13 -0400 | [diff] [blame] | 7 | * Copyright (c) 2008 Intel Corporation |
| 8 | * Author: Matthew Wilcox <willy@linux.intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
| 10 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 25 | * |
| 26 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 27 | * |
| 28 | */ |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/module.h> |
| 31 | #include <linux/kernel.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/mm.h> |
| 34 | #include <linux/pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/interrupt.h> |
| 36 | #include <linux/kmod.h> |
| 37 | #include <linux/delay.h> |
| 38 | #include <linux/workqueue.h> |
| 39 | #include <linux/nmi.h> |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 40 | #include <linux/acpi.h> |
Rafael J. Wysocki | 2d6d9fd | 2011-01-19 22:27:14 +0100 | [diff] [blame] | 41 | #include <linux/acpi_io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/efi.h> |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 43 | #include <linux/ioport.h> |
| 44 | #include <linux/list.h> |
Matthew Wilcox | f1241c8 | 2008-03-14 13:43:13 -0400 | [diff] [blame] | 45 | #include <linux/jiffies.h> |
| 46 | #include <linux/semaphore.h> |
| 47 | |
| 48 | #include <asm/io.h> |
| 49 | #include <asm/uaccess.h> |
| 50 | |
| 51 | #include <acpi/acpi.h> |
| 52 | #include <acpi/acpi_bus.h> |
| 53 | #include <acpi/processor.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #define _COMPONENT ACPI_OS_SERVICES |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 56 | ACPI_MODULE_NAME("osl"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #define PREFIX "ACPI: " |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 58 | struct acpi_os_dpc { |
| 59 | acpi_osd_exec_callback function; |
| 60 | void *context; |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 61 | struct work_struct work; |
Bjorn Helgaas | 9ac6185 | 2009-08-31 22:32:10 +0000 | [diff] [blame] | 62 | int wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | }; |
| 64 | |
| 65 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
| 66 | #include CONFIG_ACPI_CUSTOM_DSDT_FILE |
| 67 | #endif |
| 68 | |
| 69 | #ifdef ENABLE_DEBUGGER |
| 70 | #include <linux/kdb.h> |
| 71 | |
| 72 | /* stuff for debugger support */ |
| 73 | int acpi_in_debugger; |
| 74 | EXPORT_SYMBOL(acpi_in_debugger); |
| 75 | |
| 76 | extern char line_buf[80]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 77 | #endif /*ENABLE_DEBUGGER */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | static acpi_osd_handler acpi_irq_handler; |
| 80 | static void *acpi_irq_context; |
| 81 | static struct workqueue_struct *kacpid_wq; |
Alexey Starikovskiy | 88db5e1 | 2007-05-09 23:31:03 -0400 | [diff] [blame] | 82 | static struct workqueue_struct *kacpi_notify_wq; |
Prarit Bhargava | 6af8bef | 2011-09-28 19:40:53 -0400 | [diff] [blame] | 83 | struct workqueue_struct *kacpi_hotplug_wq; |
| 84 | EXPORT_SYMBOL(kacpi_hotplug_wq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 86 | /* |
| 87 | * This list of permanent mappings is for memory that may be accessed from |
| 88 | * interrupt context, where we can't do the ioremap(). |
| 89 | */ |
| 90 | struct acpi_ioremap { |
| 91 | struct list_head list; |
| 92 | void __iomem *virt; |
| 93 | acpi_physical_address phys; |
| 94 | acpi_size size; |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 95 | unsigned long refcount; |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 96 | }; |
| 97 | |
| 98 | static LIST_HEAD(acpi_ioremaps); |
Rafael J. Wysocki | 7bbb890 | 2011-02-08 23:37:42 +0100 | [diff] [blame] | 99 | static DEFINE_MUTEX(acpi_ioremap_lock); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 100 | |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 101 | static void __init acpi_osi_setup_late(void); |
Len Brown | ae00d81 | 2007-05-29 18:43:33 -0400 | [diff] [blame] | 102 | |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 103 | /* |
Len Brown | a6e0887 | 2008-11-08 01:21:10 -0500 | [diff] [blame] | 104 | * The story of _OSI(Linux) |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 105 | * |
Len Brown | a6e0887 | 2008-11-08 01:21:10 -0500 | [diff] [blame] | 106 | * From pre-history through Linux-2.6.22, |
| 107 | * Linux responded TRUE upon a BIOS OSI(Linux) query. |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 108 | * |
Len Brown | a6e0887 | 2008-11-08 01:21:10 -0500 | [diff] [blame] | 109 | * Unfortunately, reference BIOS writers got wind of this |
| 110 | * and put OSI(Linux) in their example code, quickly exposing |
| 111 | * this string as ill-conceived and opening the door to |
| 112 | * an un-bounded number of BIOS incompatibilities. |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 113 | * |
Len Brown | a6e0887 | 2008-11-08 01:21:10 -0500 | [diff] [blame] | 114 | * For example, OSI(Linux) was used on resume to re-POST a |
| 115 | * video card on one system, because Linux at that time |
| 116 | * could not do a speedy restore in its native driver. |
| 117 | * But then upon gaining quick native restore capability, |
| 118 | * Linux has no way to tell the BIOS to skip the time-consuming |
| 119 | * POST -- putting Linux at a permanent performance disadvantage. |
| 120 | * On another system, the BIOS writer used OSI(Linux) |
| 121 | * to infer native OS support for IPMI! On other systems, |
| 122 | * OSI(Linux) simply got in the way of Linux claiming to |
| 123 | * be compatible with other operating systems, exposing |
| 124 | * BIOS issues such as skipped device initialization. |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 125 | * |
Len Brown | a6e0887 | 2008-11-08 01:21:10 -0500 | [diff] [blame] | 126 | * So "Linux" turned out to be a really poor chose of |
| 127 | * OSI string, and from Linux-2.6.23 onward we respond FALSE. |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 128 | * |
| 129 | * BIOS writers should NOT query _OSI(Linux) on future systems. |
Len Brown | a6e0887 | 2008-11-08 01:21:10 -0500 | [diff] [blame] | 130 | * Linux will complain on the console when it sees it, and return FALSE. |
| 131 | * To get Linux to return TRUE for your system will require |
| 132 | * a kernel source update to add a DMI entry, |
| 133 | * or boot with "acpi_osi=Linux" |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 134 | */ |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 135 | |
Adrian Bunk | 1d15d84 | 2008-01-29 00:10:15 +0200 | [diff] [blame] | 136 | static struct osi_linux { |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 137 | unsigned int enable:1; |
| 138 | unsigned int dmi:1; |
| 139 | unsigned int cmdline:1; |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 140 | } osi_linux = {0, 0, 0}; |
Len Brown | f507654 | 2007-05-30 00:10:38 -0400 | [diff] [blame] | 141 | |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 142 | static u32 acpi_osi_handler(acpi_string interface, u32 supported) |
| 143 | { |
| 144 | if (!strcmp("Linux", interface)) { |
| 145 | |
Len Brown | 8997621 | 2011-08-02 00:45:48 -0400 | [diff] [blame] | 146 | printk_once(KERN_NOTICE FW_BUG PREFIX |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 147 | "BIOS _OSI(Linux) query %s%s\n", |
| 148 | osi_linux.enable ? "honored" : "ignored", |
| 149 | osi_linux.cmdline ? " via cmdline" : |
| 150 | osi_linux.dmi ? " via DMI" : ""); |
| 151 | } |
| 152 | |
| 153 | return supported; |
| 154 | } |
| 155 | |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 156 | static void __init acpi_request_region (struct acpi_generic_address *gas, |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 157 | unsigned int length, char *desc) |
| 158 | { |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 159 | u64 addr; |
| 160 | |
| 161 | /* Handle possible alignment issues */ |
| 162 | memcpy(&addr, &gas->address, sizeof(addr)); |
| 163 | if (!addr || !length) |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 164 | return; |
| 165 | |
Andi Kleen | cfa806f | 2010-07-20 15:18:36 -0700 | [diff] [blame] | 166 | /* Resources are never freed */ |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 167 | if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO) |
| 168 | request_region(addr, length, desc); |
| 169 | else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
| 170 | request_mem_region(addr, length, desc); |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static int __init acpi_reserve_resources(void) |
| 174 | { |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 175 | acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length, |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 176 | "ACPI PM1a_EVT_BLK"); |
| 177 | |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 178 | acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length, |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 179 | "ACPI PM1b_EVT_BLK"); |
| 180 | |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 181 | acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length, |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 182 | "ACPI PM1a_CNT_BLK"); |
| 183 | |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 184 | acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length, |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 185 | "ACPI PM1b_CNT_BLK"); |
| 186 | |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 187 | if (acpi_gbl_FADT.pm_timer_length == 4) |
| 188 | acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR"); |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 189 | |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 190 | acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length, |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 191 | "ACPI PM2_CNT_BLK"); |
| 192 | |
| 193 | /* Length of GPE blocks must be a non-negative multiple of 2 */ |
| 194 | |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 195 | if (!(acpi_gbl_FADT.gpe0_block_length & 0x1)) |
| 196 | acpi_request_region(&acpi_gbl_FADT.xgpe0_block, |
| 197 | acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK"); |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 198 | |
Len Brown | eee3c85 | 2007-02-03 01:38:16 -0500 | [diff] [blame] | 199 | if (!(acpi_gbl_FADT.gpe1_block_length & 0x1)) |
| 200 | acpi_request_region(&acpi_gbl_FADT.xgpe1_block, |
| 201 | acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK"); |
Bjorn Helgaas | 9a47cdb | 2007-01-18 16:42:55 -0700 | [diff] [blame] | 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | device_initcall(acpi_reserve_resources); |
| 206 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 207 | void acpi_os_printf(const char *fmt, ...) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | { |
| 209 | va_list args; |
| 210 | va_start(args, fmt); |
| 211 | acpi_os_vprintf(fmt, args); |
| 212 | va_end(args); |
| 213 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 214 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 215 | void acpi_os_vprintf(const char *fmt, va_list args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | { |
| 217 | static char buffer[512]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | vsprintf(buffer, fmt, args); |
| 220 | |
| 221 | #ifdef ENABLE_DEBUGGER |
| 222 | if (acpi_in_debugger) { |
| 223 | kdb_printf("%s", buffer); |
| 224 | } else { |
Frank Seidel | 4d93915 | 2009-02-04 17:03:07 +0100 | [diff] [blame] | 225 | printk(KERN_CONT "%s", buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | } |
| 227 | #else |
Frank Seidel | 4d93915 | 2009-02-04 17:03:07 +0100 | [diff] [blame] | 228 | printk(KERN_CONT "%s", buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | #endif |
| 230 | } |
| 231 | |
Takao Indoh | 4996c02 | 2011-07-14 18:05:21 -0400 | [diff] [blame] | 232 | #ifdef CONFIG_KEXEC |
| 233 | static unsigned long acpi_rsdp; |
| 234 | static int __init setup_acpi_rsdp(char *arg) |
| 235 | { |
| 236 | acpi_rsdp = simple_strtoul(arg, NULL, 16); |
| 237 | return 0; |
| 238 | } |
| 239 | early_param("acpi_rsdp", setup_acpi_rsdp); |
| 240 | #endif |
| 241 | |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 242 | acpi_physical_address __init acpi_os_get_root_pointer(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | { |
Takao Indoh | 4996c02 | 2011-07-14 18:05:21 -0400 | [diff] [blame] | 244 | #ifdef CONFIG_KEXEC |
| 245 | if (acpi_rsdp) |
| 246 | return acpi_rsdp; |
| 247 | #endif |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | if (efi_enabled) { |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 250 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 251 | return efi.acpi20; |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 252 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 253 | return efi.acpi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | else { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 255 | printk(KERN_ERR PREFIX |
| 256 | "System description tables not found\n"); |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 257 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
Len Brown | 239665a | 2007-11-23 20:08:02 -0500 | [diff] [blame] | 259 | } else { |
| 260 | acpi_physical_address pa = 0; |
| 261 | |
| 262 | acpi_find_root_pointer(&pa); |
| 263 | return pa; |
| 264 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
| 266 | |
Myron Stowe | 78cdb3e | 2010-10-21 14:24:09 -0600 | [diff] [blame] | 267 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 268 | static struct acpi_ioremap * |
| 269 | acpi_map_lookup(acpi_physical_address phys, acpi_size size) |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 270 | { |
| 271 | struct acpi_ioremap *map; |
| 272 | |
Myron Stowe | 78cdb3e | 2010-10-21 14:24:09 -0600 | [diff] [blame] | 273 | list_for_each_entry_rcu(map, &acpi_ioremaps, list) |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 274 | if (map->phys <= phys && |
| 275 | phys + size <= map->phys + map->size) |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 276 | return map; |
| 277 | |
| 278 | return NULL; |
| 279 | } |
| 280 | |
| 281 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ |
| 282 | static void __iomem * |
| 283 | acpi_map_vaddr_lookup(acpi_physical_address phys, unsigned int size) |
| 284 | { |
| 285 | struct acpi_ioremap *map; |
| 286 | |
| 287 | map = acpi_map_lookup(phys, size); |
| 288 | if (map) |
| 289 | return map->virt + (phys - map->phys); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 290 | |
| 291 | return NULL; |
| 292 | } |
| 293 | |
Rafael J. Wysocki | 13606a2 | 2011-02-08 23:38:25 +0100 | [diff] [blame] | 294 | void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size) |
| 295 | { |
| 296 | struct acpi_ioremap *map; |
| 297 | void __iomem *virt = NULL; |
| 298 | |
| 299 | mutex_lock(&acpi_ioremap_lock); |
| 300 | map = acpi_map_lookup(phys, size); |
| 301 | if (map) { |
| 302 | virt = map->virt + (phys - map->phys); |
| 303 | map->refcount++; |
| 304 | } |
| 305 | mutex_unlock(&acpi_ioremap_lock); |
| 306 | return virt; |
| 307 | } |
| 308 | EXPORT_SYMBOL_GPL(acpi_os_get_iomem); |
| 309 | |
Myron Stowe | 78cdb3e | 2010-10-21 14:24:09 -0600 | [diff] [blame] | 310 | /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */ |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 311 | static struct acpi_ioremap * |
| 312 | acpi_map_lookup_virt(void __iomem *virt, acpi_size size) |
| 313 | { |
| 314 | struct acpi_ioremap *map; |
| 315 | |
Myron Stowe | 78cdb3e | 2010-10-21 14:24:09 -0600 | [diff] [blame] | 316 | list_for_each_entry_rcu(map, &acpi_ioremaps, list) |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 317 | if (map->virt <= virt && |
| 318 | virt + size <= map->virt + map->size) |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 319 | return map; |
| 320 | |
| 321 | return NULL; |
| 322 | } |
| 323 | |
Jan Beulich | 2fdf074 | 2007-12-13 08:33:59 +0000 | [diff] [blame] | 324 | void __iomem *__init_refok |
| 325 | acpi_os_map_memory(acpi_physical_address phys, acpi_size size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | { |
Rafael J. Wysocki | 7ffd044 | 2011-02-08 23:38:05 +0100 | [diff] [blame] | 327 | struct acpi_ioremap *map; |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 328 | void __iomem *virt; |
Rafael J. Wysocki | 2d6d9fd | 2011-01-19 22:27:14 +0100 | [diff] [blame] | 329 | acpi_physical_address pg_off; |
| 330 | acpi_size pg_sz; |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 331 | |
Bjorn Helgaas | 9f4fd61 | 2006-03-26 01:37:10 -0800 | [diff] [blame] | 332 | if (phys > ULONG_MAX) { |
| 333 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); |
Randy Dunlap | 70c0846 | 2007-02-13 16:11:36 -0800 | [diff] [blame] | 334 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 336 | |
| 337 | if (!acpi_gbl_permanent_mmap) |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 338 | return __acpi_map_table((unsigned long)phys, size); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 339 | |
Rafael J. Wysocki | 7ffd044 | 2011-02-08 23:38:05 +0100 | [diff] [blame] | 340 | mutex_lock(&acpi_ioremap_lock); |
| 341 | /* Check if there's a suitable mapping already. */ |
| 342 | map = acpi_map_lookup(phys, size); |
| 343 | if (map) { |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 344 | map->refcount++; |
Rafael J. Wysocki | 7ffd044 | 2011-02-08 23:38:05 +0100 | [diff] [blame] | 345 | goto out; |
| 346 | } |
| 347 | |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 348 | map = kzalloc(sizeof(*map), GFP_KERNEL); |
Rafael J. Wysocki | 7ffd044 | 2011-02-08 23:38:05 +0100 | [diff] [blame] | 349 | if (!map) { |
| 350 | mutex_unlock(&acpi_ioremap_lock); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 351 | return NULL; |
Rafael J. Wysocki | 7ffd044 | 2011-02-08 23:38:05 +0100 | [diff] [blame] | 352 | } |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 353 | |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 354 | pg_off = round_down(phys, PAGE_SIZE); |
| 355 | pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off; |
Rafael J. Wysocki | 2d6d9fd | 2011-01-19 22:27:14 +0100 | [diff] [blame] | 356 | virt = acpi_os_ioremap(pg_off, pg_sz); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 357 | if (!virt) { |
Rafael J. Wysocki | 7ffd044 | 2011-02-08 23:38:05 +0100 | [diff] [blame] | 358 | mutex_unlock(&acpi_ioremap_lock); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 359 | kfree(map); |
| 360 | return NULL; |
| 361 | } |
| 362 | |
| 363 | INIT_LIST_HEAD(&map->list); |
| 364 | map->virt = virt; |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 365 | map->phys = pg_off; |
| 366 | map->size = pg_sz; |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 367 | map->refcount = 1; |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 368 | |
Myron Stowe | 78cdb3e | 2010-10-21 14:24:09 -0600 | [diff] [blame] | 369 | list_add_tail_rcu(&map->list, &acpi_ioremaps); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 370 | |
Rafael J. Wysocki | 7ffd044 | 2011-02-08 23:38:05 +0100 | [diff] [blame] | 371 | out: |
| 372 | mutex_unlock(&acpi_ioremap_lock); |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 373 | return map->virt + (phys - map->phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | } |
Kylene Jo Hall | 55a82ab | 2006-01-08 01:03:15 -0800 | [diff] [blame] | 375 | EXPORT_SYMBOL_GPL(acpi_os_map_memory); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 377 | static void acpi_os_drop_map_ref(struct acpi_ioremap *map) |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 378 | { |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 379 | if (!--map->refcount) |
| 380 | list_del_rcu(&map->list); |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 381 | } |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 382 | |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 383 | static void acpi_os_map_cleanup(struct acpi_ioremap *map) |
Rafael J. Wysocki | 7fe135d | 2011-02-08 23:37:53 +0100 | [diff] [blame] | 384 | { |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 385 | if (!map->refcount) { |
| 386 | synchronize_rcu(); |
| 387 | iounmap(map->virt); |
| 388 | kfree(map); |
| 389 | } |
Myron Stowe | 4a3cba5 | 2010-10-21 14:24:14 -0600 | [diff] [blame] | 390 | } |
| 391 | |
Jeremy Fitzhardinge | 0d3a9cf | 2009-02-22 14:58:56 -0800 | [diff] [blame] | 392 | void __ref acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | { |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 394 | struct acpi_ioremap *map; |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 395 | |
| 396 | if (!acpi_gbl_permanent_mmap) { |
Yinghai Lu | 7d97277 | 2009-02-07 15:39:41 -0800 | [diff] [blame] | 397 | __acpi_unmap_table(virt, size); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 398 | return; |
| 399 | } |
| 400 | |
Rafael J. Wysocki | 7bbb890 | 2011-02-08 23:37:42 +0100 | [diff] [blame] | 401 | mutex_lock(&acpi_ioremap_lock); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 402 | map = acpi_map_lookup_virt(virt, size); |
| 403 | if (!map) { |
Rafael J. Wysocki | 7bbb890 | 2011-02-08 23:37:42 +0100 | [diff] [blame] | 404 | mutex_unlock(&acpi_ioremap_lock); |
Rafael J. Wysocki | 7fe135d | 2011-02-08 23:37:53 +0100 | [diff] [blame] | 405 | WARN(true, PREFIX "%s: bad address %p\n", __func__, virt); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 406 | return; |
| 407 | } |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 408 | acpi_os_drop_map_ref(map); |
Rafael J. Wysocki | 7bbb890 | 2011-02-08 23:37:42 +0100 | [diff] [blame] | 409 | mutex_unlock(&acpi_ioremap_lock); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 410 | |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 411 | acpi_os_map_cleanup(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | } |
Kylene Jo Hall | 55a82ab | 2006-01-08 01:03:15 -0800 | [diff] [blame] | 413 | EXPORT_SYMBOL_GPL(acpi_os_unmap_memory); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
Jeremy Fitzhardinge | 0d3a9cf | 2009-02-22 14:58:56 -0800 | [diff] [blame] | 415 | void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size) |
Yinghai Lu | 7d97277 | 2009-02-07 15:39:41 -0800 | [diff] [blame] | 416 | { |
| 417 | if (!acpi_gbl_permanent_mmap) |
| 418 | __acpi_unmap_table(virt, size); |
| 419 | } |
| 420 | |
Myron Stowe | 6f68c91 | 2011-11-07 16:23:34 -0700 | [diff] [blame] | 421 | int acpi_os_map_generic_address(struct acpi_generic_address *gas) |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 422 | { |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 423 | u64 addr; |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 424 | void __iomem *virt; |
| 425 | |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 426 | if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 427 | return 0; |
| 428 | |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 429 | /* Handle possible alignment issues */ |
| 430 | memcpy(&addr, &gas->address, sizeof(addr)); |
| 431 | if (!addr || !gas->bit_width) |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 432 | return -EINVAL; |
| 433 | |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 434 | virt = acpi_os_map_memory(addr, gas->bit_width / 8); |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 435 | if (!virt) |
| 436 | return -EIO; |
| 437 | |
| 438 | return 0; |
| 439 | } |
Myron Stowe | 6f68c91 | 2011-11-07 16:23:34 -0700 | [diff] [blame] | 440 | EXPORT_SYMBOL(acpi_os_map_generic_address); |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 441 | |
Myron Stowe | 6f68c91 | 2011-11-07 16:23:34 -0700 | [diff] [blame] | 442 | void acpi_os_unmap_generic_address(struct acpi_generic_address *gas) |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 443 | { |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 444 | u64 addr; |
Rafael J. Wysocki | 7fe135d | 2011-02-08 23:37:53 +0100 | [diff] [blame] | 445 | struct acpi_ioremap *map; |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 446 | |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 447 | if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 448 | return; |
| 449 | |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 450 | /* Handle possible alignment issues */ |
| 451 | memcpy(&addr, &gas->address, sizeof(addr)); |
| 452 | if (!addr || !gas->bit_width) |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 453 | return; |
| 454 | |
Rafael J. Wysocki | 7bbb890 | 2011-02-08 23:37:42 +0100 | [diff] [blame] | 455 | mutex_lock(&acpi_ioremap_lock); |
Myron Stowe | bc9ffce | 2011-11-07 16:23:27 -0700 | [diff] [blame] | 456 | map = acpi_map_lookup(addr, gas->bit_width / 8); |
Rafael J. Wysocki | 7fe135d | 2011-02-08 23:37:53 +0100 | [diff] [blame] | 457 | if (!map) { |
| 458 | mutex_unlock(&acpi_ioremap_lock); |
| 459 | return; |
| 460 | } |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 461 | acpi_os_drop_map_ref(map); |
Rafael J. Wysocki | 7bbb890 | 2011-02-08 23:37:42 +0100 | [diff] [blame] | 462 | mutex_unlock(&acpi_ioremap_lock); |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 463 | |
Rafael J. Wysocki | b7c1fad | 2011-02-08 23:38:15 +0100 | [diff] [blame] | 464 | acpi_os_map_cleanup(map); |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 465 | } |
Myron Stowe | 6f68c91 | 2011-11-07 16:23:34 -0700 | [diff] [blame] | 466 | EXPORT_SYMBOL(acpi_os_unmap_generic_address); |
Myron Stowe | 2971852 | 2010-10-21 14:23:59 -0600 | [diff] [blame] | 467 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | #ifdef ACPI_FUTURE_USAGE |
| 469 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 470 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 472 | if (!phys || !virt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | return AE_BAD_PARAMETER; |
| 474 | |
| 475 | *phys = virt_to_phys(virt); |
| 476 | |
| 477 | return AE_OK; |
| 478 | } |
| 479 | #endif |
| 480 | |
| 481 | #define ACPI_MAX_OVERRIDE_LEN 100 |
| 482 | |
| 483 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; |
| 484 | |
| 485 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 486 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
| 487 | acpi_string * new_val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | { |
| 489 | if (!init_val || !new_val) |
| 490 | return AE_BAD_PARAMETER; |
| 491 | |
| 492 | *new_val = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 493 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 495 | acpi_os_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | *new_val = acpi_os_name; |
| 497 | } |
| 498 | |
| 499 | return AE_OK; |
| 500 | } |
| 501 | |
| 502 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 503 | acpi_os_table_override(struct acpi_table_header * existing_table, |
| 504 | struct acpi_table_header ** new_table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | { |
| 506 | if (!existing_table || !new_table) |
| 507 | return AE_BAD_PARAMETER; |
| 508 | |
Markus Gaugusch | 71fc47a | 2008-02-05 00:04:06 +0100 | [diff] [blame] | 509 | *new_table = NULL; |
| 510 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
| 512 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 513 | *new_table = (struct acpi_table_header *)AmlCode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | #endif |
Éric Piel | 6ed31e9 | 2008-02-05 00:04:50 +0100 | [diff] [blame] | 515 | if (*new_table != NULL) { |
| 516 | printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], " |
| 517 | "this is unsafe: tainting kernel\n", |
| 518 | existing_table->signature, |
| 519 | existing_table->oem_table_id); |
| 520 | add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); |
| 521 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | return AE_OK; |
| 523 | } |
| 524 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 525 | static irqreturn_t acpi_irq(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | { |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 527 | u32 handled; |
| 528 | |
| 529 | handled = (*acpi_irq_handler) (acpi_irq_context); |
| 530 | |
| 531 | if (handled) { |
| 532 | acpi_irq_handled++; |
| 533 | return IRQ_HANDLED; |
Len Brown | 88bea18 | 2009-04-21 00:35:47 -0400 | [diff] [blame] | 534 | } else { |
| 535 | acpi_irq_not_handled++; |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 536 | return IRQ_NONE; |
Len Brown | 88bea18 | 2009-04-21 00:35:47 -0400 | [diff] [blame] | 537 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 541 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
| 542 | void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | { |
| 544 | unsigned int irq; |
| 545 | |
Len Brown | 5229e87 | 2008-02-06 01:26:55 -0500 | [diff] [blame] | 546 | acpi_irq_stats_init(); |
| 547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | /* |
Rafael J. Wysocki | 23fe363 | 2011-02-08 23:48:16 +0100 | [diff] [blame] | 549 | * ACPI interrupts different from the SCI in our copy of the FADT are |
| 550 | * not supported. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | */ |
Rafael J. Wysocki | 23fe363 | 2011-02-08 23:48:16 +0100 | [diff] [blame] | 552 | if (gsi != acpi_gbl_FADT.sci_interrupt) |
| 553 | return AE_BAD_PARAMETER; |
| 554 | |
| 555 | if (acpi_irq_handler) |
| 556 | return AE_ALREADY_ACQUIRED; |
| 557 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
| 559 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", |
| 560 | gsi); |
| 561 | return AE_OK; |
| 562 | } |
| 563 | |
| 564 | acpi_irq_handler = handler; |
| 565 | acpi_irq_context = context; |
Thomas Gleixner | dace145 | 2006-07-01 19:29:38 -0700 | [diff] [blame] | 566 | if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
Rafael J. Wysocki | 23fe363 | 2011-02-08 23:48:16 +0100 | [diff] [blame] | 568 | acpi_irq_handler = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | return AE_NOT_ACQUIRED; |
| 570 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
| 572 | return AE_OK; |
| 573 | } |
| 574 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 575 | acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | { |
Rafael J. Wysocki | 23fe363 | 2011-02-08 23:48:16 +0100 | [diff] [blame] | 577 | if (irq != acpi_gbl_FADT.sci_interrupt) |
| 578 | return AE_BAD_PARAMETER; |
| 579 | |
| 580 | free_irq(irq, acpi_irq); |
| 581 | acpi_irq_handler = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | |
| 583 | return AE_OK; |
| 584 | } |
| 585 | |
| 586 | /* |
| 587 | * Running in interpreter thread context, safe to sleep |
| 588 | */ |
| 589 | |
Lin Ming | 439913f | 2010-01-28 10:53:19 +0800 | [diff] [blame] | 590 | void acpi_os_sleep(u64 ms) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
Nishanth Aravamudan | 01a527e | 2005-11-07 01:01:14 -0800 | [diff] [blame] | 592 | schedule_timeout_interruptible(msecs_to_jiffies(ms)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 594 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 595 | void acpi_os_stall(u32 us) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | { |
| 597 | while (us) { |
| 598 | u32 delay = 1000; |
| 599 | |
| 600 | if (delay > us) |
| 601 | delay = us; |
| 602 | udelay(delay); |
| 603 | touch_nmi_watchdog(); |
| 604 | us -= delay; |
| 605 | } |
| 606 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | /* |
| 609 | * Support ACPI 3.0 AML Timer operand |
| 610 | * Returns 64-bit free-running, monotonically increasing timer |
| 611 | * with 100ns granularity |
| 612 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 613 | u64 acpi_os_get_timer(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | { |
| 615 | static u64 t; |
| 616 | |
| 617 | #ifdef CONFIG_HPET |
| 618 | /* TBD: use HPET if available */ |
| 619 | #endif |
| 620 | |
| 621 | #ifdef CONFIG_X86_PM_TIMER |
| 622 | /* TBD: default to PM timer if HPET was not available */ |
| 623 | #endif |
| 624 | if (!t) |
| 625 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); |
| 626 | |
| 627 | return ++t; |
| 628 | } |
| 629 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 630 | acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | { |
| 632 | u32 dummy; |
| 633 | |
| 634 | if (!value) |
| 635 | value = &dummy; |
| 636 | |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 637 | *value = 0; |
| 638 | if (width <= 8) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 639 | *(u8 *) value = inb(port); |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 640 | } else if (width <= 16) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 641 | *(u16 *) value = inw(port); |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 642 | } else if (width <= 32) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 643 | *(u32 *) value = inl(port); |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 644 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | BUG(); |
| 646 | } |
| 647 | |
| 648 | return AE_OK; |
| 649 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | EXPORT_SYMBOL(acpi_os_read_port); |
| 652 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 653 | acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | { |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 655 | if (width <= 8) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | outb(value, port); |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 657 | } else if (width <= 16) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | outw(value, port); |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 659 | } else if (width <= 32) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | outl(value, port); |
Zhao Yakui | 49fbabf | 2007-11-15 17:01:06 +0800 | [diff] [blame] | 661 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | BUG(); |
| 663 | } |
| 664 | |
| 665 | return AE_OK; |
| 666 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 667 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | EXPORT_SYMBOL(acpi_os_write_port); |
| 669 | |
| 670 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 671 | acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 673 | void __iomem *virt_addr; |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 674 | unsigned int size = width / 8; |
| 675 | bool unmap = false; |
| 676 | u32 dummy; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | |
Myron Stowe | 78cdb3e | 2010-10-21 14:24:09 -0600 | [diff] [blame] | 678 | rcu_read_lock(); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 679 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 680 | if (!virt_addr) { |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 681 | rcu_read_unlock(); |
Rafael J. Wysocki | 2d6d9fd | 2011-01-19 22:27:14 +0100 | [diff] [blame] | 682 | virt_addr = acpi_os_ioremap(phys_addr, size); |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 683 | if (!virt_addr) |
| 684 | return AE_BAD_ADDRESS; |
| 685 | unmap = true; |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 686 | } |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 687 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | if (!value) |
| 689 | value = &dummy; |
| 690 | |
| 691 | switch (width) { |
| 692 | case 8: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 693 | *(u8 *) value = readb(virt_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | break; |
| 695 | case 16: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 696 | *(u16 *) value = readw(virt_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | break; |
| 698 | case 32: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 699 | *(u32 *) value = readl(virt_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | break; |
| 701 | default: |
| 702 | BUG(); |
| 703 | } |
| 704 | |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 705 | if (unmap) |
| 706 | iounmap(virt_addr); |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 707 | else |
| 708 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | return AE_OK; |
| 711 | } |
| 712 | |
| 713 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 714 | acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 716 | void __iomem *virt_addr; |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 717 | unsigned int size = width / 8; |
| 718 | bool unmap = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
Myron Stowe | 78cdb3e | 2010-10-21 14:24:09 -0600 | [diff] [blame] | 720 | rcu_read_lock(); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 721 | virt_addr = acpi_map_vaddr_lookup(phys_addr, size); |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 722 | if (!virt_addr) { |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 723 | rcu_read_unlock(); |
Rafael J. Wysocki | 2d6d9fd | 2011-01-19 22:27:14 +0100 | [diff] [blame] | 724 | virt_addr = acpi_os_ioremap(phys_addr, size); |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 725 | if (!virt_addr) |
| 726 | return AE_BAD_ADDRESS; |
| 727 | unmap = true; |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 728 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | |
| 730 | switch (width) { |
| 731 | case 8: |
| 732 | writeb(value, virt_addr); |
| 733 | break; |
| 734 | case 16: |
| 735 | writew(value, virt_addr); |
| 736 | break; |
| 737 | case 32: |
| 738 | writel(value, virt_addr); |
| 739 | break; |
| 740 | default: |
| 741 | BUG(); |
| 742 | } |
| 743 | |
Myron Stowe | 620242a | 2010-10-21 14:23:53 -0600 | [diff] [blame] | 744 | if (unmap) |
| 745 | iounmap(virt_addr); |
Rafael J. Wysocki | 884b821 | 2011-02-08 23:37:16 +0100 | [diff] [blame] | 746 | else |
| 747 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | |
| 749 | return AE_OK; |
| 750 | } |
| 751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 753 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
Bob Moore | c5f0231 | 2010-08-06 08:57:53 +0800 | [diff] [blame] | 754 | u64 *value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | { |
| 756 | int result, size; |
Bob Moore | c5f0231 | 2010-08-06 08:57:53 +0800 | [diff] [blame] | 757 | u32 value32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | |
| 759 | if (!value) |
| 760 | return AE_BAD_PARAMETER; |
| 761 | |
| 762 | switch (width) { |
| 763 | case 8: |
| 764 | size = 1; |
| 765 | break; |
| 766 | case 16: |
| 767 | size = 2; |
| 768 | break; |
| 769 | case 32: |
| 770 | size = 4; |
| 771 | break; |
| 772 | default: |
| 773 | return AE_ERROR; |
| 774 | } |
| 775 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 776 | result = raw_pci_read(pci_id->segment, pci_id->bus, |
| 777 | PCI_DEVFN(pci_id->device, pci_id->function), |
Bob Moore | c5f0231 | 2010-08-06 08:57:53 +0800 | [diff] [blame] | 778 | reg, size, &value32); |
| 779 | *value = value32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | |
| 781 | return (result ? AE_ERROR : AE_OK); |
| 782 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 783 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 785 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
Lin Ming | 439913f | 2010-01-28 10:53:19 +0800 | [diff] [blame] | 786 | u64 value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | { |
| 788 | int result, size; |
| 789 | |
| 790 | switch (width) { |
| 791 | case 8: |
| 792 | size = 1; |
| 793 | break; |
| 794 | case 16: |
| 795 | size = 2; |
| 796 | break; |
| 797 | case 32: |
| 798 | size = 4; |
| 799 | break; |
| 800 | default: |
| 801 | return AE_ERROR; |
| 802 | } |
| 803 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 804 | result = raw_pci_write(pci_id->segment, pci_id->bus, |
| 805 | PCI_DEVFN(pci_id->device, pci_id->function), |
| 806 | reg, size, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
| 808 | return (result ? AE_ERROR : AE_OK); |
| 809 | } |
| 810 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 811 | static void acpi_os_execute_deferred(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | { |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 813 | struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work); |
Alexey Starikovskiy | 88db5e1 | 2007-05-09 23:31:03 -0400 | [diff] [blame] | 814 | |
Bjorn Helgaas | 9ac6185 | 2009-08-31 22:32:10 +0000 | [diff] [blame] | 815 | if (dpc->wait) |
| 816 | acpi_os_wait_events_complete(NULL); |
Zhang Rui | 19cd847 | 2008-08-28 10:05:06 +0800 | [diff] [blame] | 817 | |
| 818 | dpc->function(dpc->context); |
| 819 | kfree(dpc); |
Zhang Rui | 19cd847 | 2008-08-28 10:05:06 +0800 | [diff] [blame] | 820 | } |
| 821 | |
Alexey Starikovskiy | b8d3519 | 2006-05-05 03:23:00 -0400 | [diff] [blame] | 822 | /******************************************************************************* |
| 823 | * |
| 824 | * FUNCTION: acpi_os_execute |
| 825 | * |
| 826 | * PARAMETERS: Type - Type of the callback |
| 827 | * Function - Function to be executed |
| 828 | * Context - Function parameters |
| 829 | * |
| 830 | * RETURN: Status |
| 831 | * |
| 832 | * DESCRIPTION: Depending on type, either queues function for deferred execution or |
| 833 | * immediately executes function on a separate thread. |
| 834 | * |
| 835 | ******************************************************************************/ |
| 836 | |
Zhang Rui | 19cd847 | 2008-08-28 10:05:06 +0800 | [diff] [blame] | 837 | static acpi_status __acpi_os_execute(acpi_execute_type type, |
| 838 | acpi_osd_exec_callback function, void *context, int hp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 840 | acpi_status status = AE_OK; |
| 841 | struct acpi_os_dpc *dpc; |
Alexey Starikovskiy | 17bc54e | 2007-11-13 13:05:45 +0300 | [diff] [blame] | 842 | struct workqueue_struct *queue; |
Zhang Rui | 19cd847 | 2008-08-28 10:05:06 +0800 | [diff] [blame] | 843 | int ret; |
Len Brown | 72945b2 | 2006-07-12 22:46:42 -0400 | [diff] [blame] | 844 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 845 | "Scheduling function [%p(%p)] for deferred execution.\n", |
| 846 | function, context)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | /* |
| 849 | * Allocate/initialize DPC structure. Note that this memory will be |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 850 | * freed by the callee. The kernel handles the work_struct list in a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | * way that allows us to also free its memory inside the callee. |
| 852 | * Because we may want to schedule several tasks with different |
| 853 | * parameters we can't use the approach some kernel code uses of |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 854 | * having a static work_struct. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | */ |
Len Brown | 72945b2 | 2006-07-12 22:46:42 -0400 | [diff] [blame] | 856 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 857 | dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | if (!dpc) |
Lin Ming | 889c78b | 2008-12-31 09:23:57 +0800 | [diff] [blame] | 859 | return AE_NO_MEMORY; |
Linus Torvalds | b976fe1 | 2006-11-17 19:31:09 -0800 | [diff] [blame] | 860 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | dpc->function = function; |
| 862 | dpc->context = context; |
Linus Torvalds | b976fe1 | 2006-11-17 19:31:09 -0800 | [diff] [blame] | 863 | |
Zhang Rui | c02256b | 2009-06-23 10:20:29 +0800 | [diff] [blame] | 864 | /* |
| 865 | * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq |
| 866 | * because the hotplug code may call driver .remove() functions, |
| 867 | * which invoke flush_scheduled_work/acpi_os_wait_events_complete |
| 868 | * to flush these workqueues. |
| 869 | */ |
| 870 | queue = hp ? kacpi_hotplug_wq : |
| 871 | (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq); |
Bjorn Helgaas | 9ac6185 | 2009-08-31 22:32:10 +0000 | [diff] [blame] | 872 | dpc->wait = hp ? 1 : 0; |
Zhang Rui | bc73675 | 2010-03-22 15:48:54 +0800 | [diff] [blame] | 873 | |
| 874 | if (queue == kacpi_hotplug_wq) |
| 875 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); |
| 876 | else if (queue == kacpi_notify_wq) |
| 877 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); |
| 878 | else |
| 879 | INIT_WORK(&dpc->work, acpi_os_execute_deferred); |
| 880 | |
Tejun Heo | 8fec62b | 2010-06-29 10:07:09 +0200 | [diff] [blame] | 881 | /* |
| 882 | * On some machines, a software-initiated SMI causes corruption unless |
| 883 | * the SMI runs on CPU 0. An SMI can be initiated by any AML, but |
| 884 | * typically it's done in GPE-related methods that are run via |
| 885 | * workqueues, so we can avoid the known corruption cases by always |
| 886 | * queueing on CPU 0. |
| 887 | */ |
| 888 | ret = queue_work_on(0, queue, &dpc->work); |
Zhang Rui | 19cd847 | 2008-08-28 10:05:06 +0800 | [diff] [blame] | 889 | |
| 890 | if (!ret) { |
Lin Ming | 55ac9a0 | 2008-09-28 14:51:56 +0800 | [diff] [blame] | 891 | printk(KERN_ERR PREFIX |
| 892 | "Call to queue_work() failed.\n"); |
Alexey Starikovskiy | 17bc54e | 2007-11-13 13:05:45 +0300 | [diff] [blame] | 893 | status = AE_ERROR; |
| 894 | kfree(dpc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | } |
Lin Ming | 889c78b | 2008-12-31 09:23:57 +0800 | [diff] [blame] | 896 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 898 | |
Zhang Rui | 19cd847 | 2008-08-28 10:05:06 +0800 | [diff] [blame] | 899 | acpi_status acpi_os_execute(acpi_execute_type type, |
| 900 | acpi_osd_exec_callback function, void *context) |
| 901 | { |
| 902 | return __acpi_os_execute(type, function, context, 0); |
| 903 | } |
Alexey Starikovskiy | b8d3519 | 2006-05-05 03:23:00 -0400 | [diff] [blame] | 904 | EXPORT_SYMBOL(acpi_os_execute); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | |
Zhang Rui | 19cd847 | 2008-08-28 10:05:06 +0800 | [diff] [blame] | 906 | acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function, |
| 907 | void *context) |
| 908 | { |
| 909 | return __acpi_os_execute(0, function, context, 1); |
| 910 | } |
| 911 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 912 | void acpi_os_wait_events_complete(void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | { |
| 914 | flush_workqueue(kacpid_wq); |
Zhang Rui | 2f67a06 | 2008-04-29 02:34:42 -0400 | [diff] [blame] | 915 | flush_workqueue(kacpi_notify_wq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 917 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
| 919 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 921 | acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 923 | struct semaphore *sem = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | sem = acpi_os_allocate(sizeof(struct semaphore)); |
| 926 | if (!sem) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 927 | return AE_NO_MEMORY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | memset(sem, 0, sizeof(struct semaphore)); |
| 929 | |
| 930 | sema_init(sem, initial_units); |
| 931 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 932 | *handle = (acpi_handle *) sem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 934 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
| 935 | *handle, initial_units)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 937 | return AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | /* |
| 941 | * TODO: A better way to delete semaphores? Linux doesn't have a |
| 942 | * 'delete_semaphore()' function -- may result in an invalid |
| 943 | * pointer dereference for non-synchronized consumers. Should |
| 944 | * we at least check for blocked threads and signal/cancel them? |
| 945 | */ |
| 946 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 947 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 949 | struct semaphore *sem = (struct semaphore *)handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | if (!sem) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 952 | return AE_BAD_PARAMETER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 954 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | |
Matthew Wilcox | f1241c8 | 2008-03-14 13:43:13 -0400 | [diff] [blame] | 956 | BUG_ON(!list_empty(&sem->wait_list)); |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 957 | kfree(sem); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 958 | sem = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 960 | return AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | * TODO: Support for units > 1? |
| 965 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 966 | acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 968 | acpi_status status = AE_OK; |
| 969 | struct semaphore *sem = (struct semaphore *)handle; |
Matthew Wilcox | f1241c8 | 2008-03-14 13:43:13 -0400 | [diff] [blame] | 970 | long jiffies; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 971 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | if (!sem || (units < 1)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 974 | return AE_BAD_PARAMETER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
| 976 | if (units > 1) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 977 | return AE_SUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 979 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
| 980 | handle, units, timeout)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | |
Matthew Wilcox | f1241c8 | 2008-03-14 13:43:13 -0400 | [diff] [blame] | 982 | if (timeout == ACPI_WAIT_FOREVER) |
| 983 | jiffies = MAX_SCHEDULE_TIMEOUT; |
| 984 | else |
| 985 | jiffies = msecs_to_jiffies(timeout); |
| 986 | |
| 987 | ret = down_timeout(sem, jiffies); |
| 988 | if (ret) |
| 989 | status = AE_TIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | |
| 991 | if (ACPI_FAILURE(status)) { |
Bjorn Helgaas | 9e7e2c0 | 2006-04-27 05:25:00 -0400 | [diff] [blame] | 992 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 993 | "Failed to acquire semaphore[%p|%d|%d], %s", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 994 | handle, units, timeout, |
| 995 | acpi_format_exception(status))); |
| 996 | } else { |
| 997 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 998 | "Acquired semaphore[%p|%d|%d]", handle, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 999 | units, timeout)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | } |
| 1001 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1002 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | /* |
| 1006 | * TODO: Support for units > 1? |
| 1007 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1008 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1010 | struct semaphore *sem = (struct semaphore *)handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | if (!sem || (units < 1)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1013 | return AE_BAD_PARAMETER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | |
| 1015 | if (units > 1) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1016 | return AE_SUPPORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1018 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
| 1019 | units)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | |
| 1021 | up(sem); |
| 1022 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1023 | return AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1025 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | #ifdef ACPI_FUTURE_USAGE |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1027 | u32 acpi_os_get_line(char *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | { |
| 1029 | |
| 1030 | #ifdef ENABLE_DEBUGGER |
| 1031 | if (acpi_in_debugger) { |
| 1032 | u32 chars; |
| 1033 | |
| 1034 | kdb_read(buffer, sizeof(line_buf)); |
| 1035 | |
| 1036 | /* remove the CR kdb includes */ |
| 1037 | chars = strlen(buffer) - 1; |
| 1038 | buffer[chars] = '\0'; |
| 1039 | } |
| 1040 | #endif |
| 1041 | |
| 1042 | return 0; |
| 1043 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1044 | #endif /* ACPI_FUTURE_USAGE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1046 | acpi_status acpi_os_signal(u32 function, void *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1048 | switch (function) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | case ACPI_SIGNAL_FATAL: |
| 1050 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); |
| 1051 | break; |
| 1052 | case ACPI_SIGNAL_BREAKPOINT: |
| 1053 | /* |
| 1054 | * AML Breakpoint |
| 1055 | * ACPI spec. says to treat it as a NOP unless |
| 1056 | * you are debugging. So if/when we integrate |
| 1057 | * AML debugger into the kernel debugger its |
| 1058 | * hook will go here. But until then it is |
| 1059 | * not useful to print anything on breakpoints. |
| 1060 | */ |
| 1061 | break; |
| 1062 | default: |
| 1063 | break; |
| 1064 | } |
| 1065 | |
| 1066 | return AE_OK; |
| 1067 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1068 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1069 | static int __init acpi_os_name_setup(char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | { |
| 1071 | char *p = acpi_os_name; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1072 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | |
| 1074 | if (!str || !*str) |
| 1075 | return 0; |
| 1076 | |
| 1077 | for (; count-- && str && *str; str++) { |
| 1078 | if (isalnum(*str) || *str == ' ' || *str == ':') |
| 1079 | *p++ = *str; |
| 1080 | else if (*str == '\'' || *str == '"') |
| 1081 | continue; |
| 1082 | else |
| 1083 | break; |
| 1084 | } |
| 1085 | *p = 0; |
| 1086 | |
| 1087 | return 1; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | } |
| 1090 | |
| 1091 | __setup("acpi_os_name=", acpi_os_name_setup); |
| 1092 | |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1093 | #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ |
| 1094 | #define OSI_STRING_ENTRIES_MAX 16 /* arbitrary */ |
| 1095 | |
| 1096 | struct osi_setup_entry { |
| 1097 | char string[OSI_STRING_LENGTH_MAX]; |
| 1098 | bool enable; |
| 1099 | }; |
| 1100 | |
Shaohua Li | aa16597 | 2011-07-28 13:48:43 -0700 | [diff] [blame] | 1101 | static struct osi_setup_entry __initdata |
| 1102 | osi_setup_entries[OSI_STRING_ENTRIES_MAX] = { |
| 1103 | {"Module Device", true}, |
| 1104 | {"Processor Device", true}, |
| 1105 | {"3.0 _SCP Extensions", true}, |
| 1106 | {"Processor Aggregator Device", true}, |
| 1107 | }; |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1108 | |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1109 | void __init acpi_osi_setup(char *str) |
| 1110 | { |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1111 | struct osi_setup_entry *osi; |
| 1112 | bool enable = true; |
| 1113 | int i; |
| 1114 | |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1115 | if (!acpi_gbl_create_osi_method) |
| 1116 | return; |
| 1117 | |
| 1118 | if (str == NULL || *str == '\0') { |
| 1119 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); |
| 1120 | acpi_gbl_create_osi_method = FALSE; |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1121 | return; |
| 1122 | } |
| 1123 | |
| 1124 | if (*str == '!') { |
| 1125 | str++; |
| 1126 | enable = false; |
| 1127 | } |
| 1128 | |
| 1129 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { |
| 1130 | osi = &osi_setup_entries[i]; |
| 1131 | if (!strcmp(osi->string, str)) { |
| 1132 | osi->enable = enable; |
| 1133 | break; |
| 1134 | } else if (osi->string[0] == '\0') { |
| 1135 | osi->enable = enable; |
| 1136 | strncpy(osi->string, str, OSI_STRING_LENGTH_MAX); |
| 1137 | break; |
| 1138 | } |
| 1139 | } |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1140 | } |
| 1141 | |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1142 | static void __init set_osi_linux(unsigned int enable) |
| 1143 | { |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1144 | if (osi_linux.enable != enable) |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1145 | osi_linux.enable = enable; |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 1146 | |
| 1147 | if (osi_linux.enable) |
| 1148 | acpi_osi_setup("Linux"); |
| 1149 | else |
| 1150 | acpi_osi_setup("!Linux"); |
| 1151 | |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1152 | return; |
| 1153 | } |
Len Brown | f507654 | 2007-05-30 00:10:38 -0400 | [diff] [blame] | 1154 | |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1155 | static void __init acpi_cmdline_osi_linux(unsigned int enable) |
| 1156 | { |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1157 | osi_linux.cmdline = 1; /* cmdline set the default and override DMI */ |
| 1158 | osi_linux.dmi = 0; |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1159 | set_osi_linux(enable); |
Len Brown | f507654 | 2007-05-30 00:10:38 -0400 | [diff] [blame] | 1160 | |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1161 | return; |
| 1162 | } |
| 1163 | |
| 1164 | void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d) |
| 1165 | { |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1166 | printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); |
| 1167 | |
| 1168 | if (enable == -1) |
| 1169 | return; |
| 1170 | |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1171 | osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */ |
Len Brown | d4b7dc4 | 2008-01-23 20:50:56 -0500 | [diff] [blame] | 1172 | set_osi_linux(enable); |
| 1173 | |
Len Brown | f507654 | 2007-05-30 00:10:38 -0400 | [diff] [blame] | 1174 | return; |
| 1175 | } |
| 1176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | /* |
Len Brown | ae00d81 | 2007-05-29 18:43:33 -0400 | [diff] [blame] | 1178 | * Modify the list of "OS Interfaces" reported to BIOS via _OSI |
| 1179 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | * empty string disables _OSI |
Len Brown | ae00d81 | 2007-05-29 18:43:33 -0400 | [diff] [blame] | 1181 | * string starting with '!' disables that string |
| 1182 | * otherwise string is added to list, augmenting built-in strings |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | */ |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 1184 | static void __init acpi_osi_setup_late(void) |
| 1185 | { |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1186 | struct osi_setup_entry *osi; |
| 1187 | char *str; |
| 1188 | int i; |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1189 | acpi_status status; |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 1190 | |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1191 | for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) { |
| 1192 | osi = &osi_setup_entries[i]; |
| 1193 | str = osi->string; |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 1194 | |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1195 | if (*str == '\0') |
| 1196 | break; |
| 1197 | if (osi->enable) { |
| 1198 | status = acpi_install_interface(str); |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1199 | |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1200 | if (ACPI_SUCCESS(status)) |
| 1201 | printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str); |
| 1202 | } else { |
| 1203 | status = acpi_remove_interface(str); |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1204 | |
Lin Ming | 12d3206 | 2010-12-09 16:51:06 +0800 | [diff] [blame] | 1205 | if (ACPI_SUCCESS(status)) |
| 1206 | printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str); |
| 1207 | } |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 1208 | } |
| 1209 | } |
| 1210 | |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1211 | static int __init osi_setup(char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | { |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1213 | if (str && !strcmp("Linux", str)) |
| 1214 | acpi_cmdline_osi_linux(1); |
| 1215 | else if (str && !strcmp("!Linux", str)) |
| 1216 | acpi_cmdline_osi_linux(0); |
| 1217 | else |
| 1218 | acpi_osi_setup(str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | |
| 1220 | return 1; |
| 1221 | } |
| 1222 | |
Lin Ming | d90aa92 | 2010-12-09 16:50:52 +0800 | [diff] [blame] | 1223 | __setup("acpi_osi=", osi_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | |
| 1225 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1226 | static int __init acpi_serialize_setup(char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | { |
| 1228 | printk(KERN_INFO PREFIX "serialize enabled\n"); |
| 1229 | |
| 1230 | acpi_gbl_all_methods_serialized = TRUE; |
| 1231 | |
| 1232 | return 1; |
| 1233 | } |
| 1234 | |
| 1235 | __setup("acpi_serialize", acpi_serialize_setup); |
| 1236 | |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1237 | /* Check of resource interference between native drivers and ACPI |
| 1238 | * OperationRegions (SystemIO and System Memory only). |
| 1239 | * IO ports and memory declared in ACPI might be used by the ACPI subsystem |
| 1240 | * in arbitrary AML code and can interfere with legacy drivers. |
| 1241 | * acpi_enforce_resources= can be set to: |
| 1242 | * |
Luca Tettamanti | 7e90560 | 2009-03-30 00:01:27 +0200 | [diff] [blame] | 1243 | * - strict (default) (2) |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1244 | * -> further driver trying to access the resources will not load |
Luca Tettamanti | 7e90560 | 2009-03-30 00:01:27 +0200 | [diff] [blame] | 1245 | * - lax (1) |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1246 | * -> further driver trying to access the resources will load, but you |
| 1247 | * get a system message that something might go wrong... |
| 1248 | * |
| 1249 | * - no (0) |
| 1250 | * -> ACPI Operation Region resources will not be registered |
| 1251 | * |
| 1252 | */ |
| 1253 | #define ENFORCE_RESOURCES_STRICT 2 |
| 1254 | #define ENFORCE_RESOURCES_LAX 1 |
| 1255 | #define ENFORCE_RESOURCES_NO 0 |
| 1256 | |
Luca Tettamanti | 7e90560 | 2009-03-30 00:01:27 +0200 | [diff] [blame] | 1257 | static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1258 | |
| 1259 | static int __init acpi_enforce_resources_setup(char *str) |
| 1260 | { |
| 1261 | if (str == NULL || *str == '\0') |
| 1262 | return 0; |
| 1263 | |
| 1264 | if (!strcmp("strict", str)) |
| 1265 | acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; |
| 1266 | else if (!strcmp("lax", str)) |
| 1267 | acpi_enforce_resources = ENFORCE_RESOURCES_LAX; |
| 1268 | else if (!strcmp("no", str)) |
| 1269 | acpi_enforce_resources = ENFORCE_RESOURCES_NO; |
| 1270 | |
| 1271 | return 1; |
| 1272 | } |
| 1273 | |
| 1274 | __setup("acpi_enforce_resources=", acpi_enforce_resources_setup); |
| 1275 | |
| 1276 | /* Check for resource conflicts between ACPI OperationRegions and native |
| 1277 | * drivers */ |
Jean Delvare | 876fba4 | 2009-11-11 15:22:15 +0100 | [diff] [blame] | 1278 | int acpi_check_resource_conflict(const struct resource *res) |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1279 | { |
Lin Ming | f654c0f | 2012-01-12 13:10:32 +0800 | [diff] [blame] | 1280 | acpi_adr_space_type space_id; |
| 1281 | acpi_size length; |
| 1282 | u8 warn = 0; |
| 1283 | int clash = 0; |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1284 | |
| 1285 | if (acpi_enforce_resources == ENFORCE_RESOURCES_NO) |
| 1286 | return 0; |
| 1287 | if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM)) |
| 1288 | return 0; |
| 1289 | |
Lin Ming | f654c0f | 2012-01-12 13:10:32 +0800 | [diff] [blame] | 1290 | if (res->flags & IORESOURCE_IO) |
| 1291 | space_id = ACPI_ADR_SPACE_SYSTEM_IO; |
| 1292 | else |
| 1293 | space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY; |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1294 | |
Lin Ming | f654c0f | 2012-01-12 13:10:32 +0800 | [diff] [blame] | 1295 | length = res->end - res->start + 1; |
| 1296 | if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) |
| 1297 | warn = 1; |
| 1298 | clash = acpi_check_address_range(space_id, res->start, length, warn); |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1299 | |
| 1300 | if (clash) { |
| 1301 | if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) { |
Jean Delvare | 14f0334 | 2009-09-08 15:31:46 +0200 | [diff] [blame] | 1302 | if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX) |
| 1303 | printk(KERN_NOTICE "ACPI: This conflict may" |
| 1304 | " cause random problems and system" |
| 1305 | " instability\n"); |
| 1306 | printk(KERN_INFO "ACPI: If an ACPI driver is available" |
| 1307 | " for this device, you should use it instead of" |
| 1308 | " the native driver\n"); |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1309 | } |
| 1310 | if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT) |
| 1311 | return -EBUSY; |
| 1312 | } |
| 1313 | return 0; |
| 1314 | } |
Thomas Renninger | 443dea7 | 2008-02-04 23:31:23 -0800 | [diff] [blame] | 1315 | EXPORT_SYMBOL(acpi_check_resource_conflict); |
Thomas Renninger | df92e69 | 2008-02-04 23:31:22 -0800 | [diff] [blame] | 1316 | |
| 1317 | int acpi_check_region(resource_size_t start, resource_size_t n, |
| 1318 | const char *name) |
| 1319 | { |
| 1320 | struct resource res = { |
| 1321 | .start = start, |
| 1322 | .end = start + n - 1, |
| 1323 | .name = name, |
| 1324 | .flags = IORESOURCE_IO, |
| 1325 | }; |
| 1326 | |
| 1327 | return acpi_check_resource_conflict(&res); |
| 1328 | } |
| 1329 | EXPORT_SYMBOL(acpi_check_region); |
| 1330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | /* |
Jean Delvare | 70dd6be | 2010-05-27 19:58:37 +0200 | [diff] [blame] | 1332 | * Let drivers know whether the resource checks are effective |
| 1333 | */ |
| 1334 | int acpi_resources_are_enforced(void) |
| 1335 | { |
| 1336 | return acpi_enforce_resources == ENFORCE_RESOURCES_STRICT; |
| 1337 | } |
| 1338 | EXPORT_SYMBOL(acpi_resources_are_enforced); |
| 1339 | |
| 1340 | /* |
Lin Ming | 9f63b88 | 2011-03-23 17:26:34 +0800 | [diff] [blame] | 1341 | * Deallocate the memory for a spinlock. |
| 1342 | */ |
| 1343 | void acpi_os_delete_lock(acpi_spinlock handle) |
| 1344 | { |
| 1345 | ACPI_FREE(handle); |
| 1346 | } |
| 1347 | |
| 1348 | /* |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1349 | * Acquire a spinlock. |
| 1350 | * |
| 1351 | * handle is a pointer to the spinlock_t. |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1352 | */ |
| 1353 | |
Bob Moore | 967440e3 | 2006-06-23 17:04:00 -0400 | [diff] [blame] | 1354 | acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1355 | { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 1356 | acpi_cpu_flags flags; |
Bob Moore | 967440e3 | 2006-06-23 17:04:00 -0400 | [diff] [blame] | 1357 | spin_lock_irqsave(lockp, flags); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1358 | return flags; |
| 1359 | } |
| 1360 | |
| 1361 | /* |
| 1362 | * Release a spinlock. See above. |
| 1363 | */ |
| 1364 | |
Bob Moore | 967440e3 | 2006-06-23 17:04:00 -0400 | [diff] [blame] | 1365 | void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1366 | { |
Bob Moore | 967440e3 | 2006-06-23 17:04:00 -0400 | [diff] [blame] | 1367 | spin_unlock_irqrestore(lockp, flags); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1368 | } |
| 1369 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1370 | #ifndef ACPI_USE_LOCAL_CACHE |
| 1371 | |
| 1372 | /******************************************************************************* |
| 1373 | * |
| 1374 | * FUNCTION: acpi_os_create_cache |
| 1375 | * |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1376 | * PARAMETERS: name - Ascii name for the cache |
| 1377 | * size - Size of each cached object |
| 1378 | * depth - Maximum depth of the cache (in objects) <ignored> |
| 1379 | * cache - Where the new cache object is returned |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1380 | * |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1381 | * RETURN: status |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1382 | * |
| 1383 | * DESCRIPTION: Create a cache object |
| 1384 | * |
| 1385 | ******************************************************************************/ |
| 1386 | |
| 1387 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1388 | acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1389 | { |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1390 | *cache = kmem_cache_create(name, size, 0, 0, NULL); |
Adrian Bunk | a6fdbf9 | 2006-12-19 12:56:13 -0800 | [diff] [blame] | 1391 | if (*cache == NULL) |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1392 | return AE_ERROR; |
| 1393 | else |
| 1394 | return AE_OK; |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1395 | } |
| 1396 | |
| 1397 | /******************************************************************************* |
| 1398 | * |
| 1399 | * FUNCTION: acpi_os_purge_cache |
| 1400 | * |
| 1401 | * PARAMETERS: Cache - Handle to cache object |
| 1402 | * |
| 1403 | * RETURN: Status |
| 1404 | * |
| 1405 | * DESCRIPTION: Free all objects within the requested cache. |
| 1406 | * |
| 1407 | ******************************************************************************/ |
| 1408 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1409 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1410 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1411 | kmem_cache_shrink(cache); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1412 | return (AE_OK); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1413 | } |
| 1414 | |
| 1415 | /******************************************************************************* |
| 1416 | * |
| 1417 | * FUNCTION: acpi_os_delete_cache |
| 1418 | * |
| 1419 | * PARAMETERS: Cache - Handle to cache object |
| 1420 | * |
| 1421 | * RETURN: Status |
| 1422 | * |
| 1423 | * DESCRIPTION: Free all objects within the requested cache and delete the |
| 1424 | * cache object. |
| 1425 | * |
| 1426 | ******************************************************************************/ |
| 1427 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1428 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1429 | { |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1430 | kmem_cache_destroy(cache); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1431 | return (AE_OK); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1432 | } |
| 1433 | |
| 1434 | /******************************************************************************* |
| 1435 | * |
| 1436 | * FUNCTION: acpi_os_release_object |
| 1437 | * |
| 1438 | * PARAMETERS: Cache - Handle to cache object |
| 1439 | * Object - The object to be released |
| 1440 | * |
| 1441 | * RETURN: None |
| 1442 | * |
| 1443 | * DESCRIPTION: Release an object to the specified cache. If cache is full, |
| 1444 | * the object is deleted. |
| 1445 | * |
| 1446 | ******************************************************************************/ |
| 1447 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1448 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1449 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1450 | kmem_cache_free(cache, object); |
| 1451 | return (AE_OK); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1452 | } |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1453 | #endif |
Myron Stowe | d362eda | 2010-10-21 14:24:04 -0600 | [diff] [blame] | 1454 | |
| 1455 | acpi_status __init acpi_os_initialize(void) |
| 1456 | { |
| 1457 | acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block); |
| 1458 | acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1b_event_block); |
| 1459 | acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe0_block); |
| 1460 | acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe1_block); |
| 1461 | |
| 1462 | return AE_OK; |
| 1463 | } |
| 1464 | |
Zhang Rui | 32d47ee | 2010-12-08 10:40:36 +0800 | [diff] [blame] | 1465 | acpi_status __init acpi_os_initialize1(void) |
Myron Stowe | d362eda | 2010-10-21 14:24:04 -0600 | [diff] [blame] | 1466 | { |
Tejun Heo | 44d2588 | 2011-02-01 11:42:42 +0100 | [diff] [blame] | 1467 | kacpid_wq = alloc_workqueue("kacpid", 0, 1); |
| 1468 | kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1); |
| 1469 | kacpi_hotplug_wq = alloc_workqueue("kacpi_hotplug", 0, 1); |
Myron Stowe | d362eda | 2010-10-21 14:24:04 -0600 | [diff] [blame] | 1470 | BUG_ON(!kacpid_wq); |
| 1471 | BUG_ON(!kacpi_notify_wq); |
| 1472 | BUG_ON(!kacpi_hotplug_wq); |
Len Brown | 1bd64d4 | 2010-10-26 14:50:56 -0400 | [diff] [blame] | 1473 | acpi_install_interface_handler(acpi_osi_handler); |
| 1474 | acpi_osi_setup_late(); |
Myron Stowe | d362eda | 2010-10-21 14:24:04 -0600 | [diff] [blame] | 1475 | return AE_OK; |
| 1476 | } |
| 1477 | |
| 1478 | acpi_status acpi_os_terminate(void) |
| 1479 | { |
| 1480 | if (acpi_irq_handler) { |
Rafael J. Wysocki | 23fe363 | 2011-02-08 23:48:16 +0100 | [diff] [blame] | 1481 | acpi_os_remove_interrupt_handler(acpi_gbl_FADT.sci_interrupt, |
Myron Stowe | d362eda | 2010-10-21 14:24:04 -0600 | [diff] [blame] | 1482 | acpi_irq_handler); |
| 1483 | } |
| 1484 | |
| 1485 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe1_block); |
| 1486 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block); |
| 1487 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block); |
| 1488 | acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block); |
| 1489 | |
| 1490 | destroy_workqueue(kacpid_wq); |
| 1491 | destroy_workqueue(kacpi_notify_wq); |
| 1492 | destroy_workqueue(kacpi_hotplug_wq); |
| 1493 | |
| 1494 | return AE_OK; |
| 1495 | } |