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> |
| 7 | * |
| 8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | * |
| 24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <linux/config.h> |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/mm.h> |
| 33 | #include <linux/pci.h> |
| 34 | #include <linux/smp_lock.h> |
| 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> |
| 40 | #include <acpi/acpi.h> |
| 41 | #include <asm/io.h> |
| 42 | #include <acpi/acpi_bus.h> |
| 43 | #include <acpi/processor.h> |
| 44 | #include <asm/uaccess.h> |
| 45 | |
| 46 | #include <linux/efi.h> |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #define _COMPONENT ACPI_OS_SERVICES |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 49 | ACPI_MODULE_NAME("osl") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #define PREFIX "ACPI: " |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 51 | struct acpi_os_dpc { |
| 52 | acpi_osd_exec_callback function; |
| 53 | void *context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | }; |
| 55 | |
| 56 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
| 57 | #include CONFIG_ACPI_CUSTOM_DSDT_FILE |
| 58 | #endif |
| 59 | |
| 60 | #ifdef ENABLE_DEBUGGER |
| 61 | #include <linux/kdb.h> |
| 62 | |
| 63 | /* stuff for debugger support */ |
| 64 | int acpi_in_debugger; |
| 65 | EXPORT_SYMBOL(acpi_in_debugger); |
| 66 | |
| 67 | extern char line_buf[80]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 68 | #endif /*ENABLE_DEBUGGER */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
Luming Yu | fb9802f | 2005-03-18 18:03:45 -0500 | [diff] [blame] | 70 | int acpi_specific_hotkey_enabled; |
| 71 | EXPORT_SYMBOL(acpi_specific_hotkey_enabled); |
| 72 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | static unsigned int acpi_irq_irq; |
| 74 | static acpi_osd_handler acpi_irq_handler; |
| 75 | static void *acpi_irq_context; |
| 76 | static struct workqueue_struct *kacpid_wq; |
| 77 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 78 | acpi_status acpi_os_initialize(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
| 80 | return AE_OK; |
| 81 | } |
| 82 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 83 | acpi_status acpi_os_initialize1(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | { |
| 85 | /* |
| 86 | * Initialize PCI configuration space access, as we'll need to access |
| 87 | * it while walking the namespace (bus 0 and root bridges w/ _BBNs). |
| 88 | */ |
| 89 | #ifdef CONFIG_ACPI_PCI |
| 90 | if (!raw_pci_ops) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 91 | printk(KERN_ERR PREFIX |
| 92 | "Access to PCI configuration space unavailable\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | return AE_NULL_ENTRY; |
| 94 | } |
| 95 | #endif |
| 96 | kacpid_wq = create_singlethread_workqueue("kacpid"); |
| 97 | BUG_ON(!kacpid_wq); |
| 98 | |
| 99 | return AE_OK; |
| 100 | } |
| 101 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 102 | acpi_status acpi_os_terminate(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | { |
| 104 | if (acpi_irq_handler) { |
| 105 | acpi_os_remove_interrupt_handler(acpi_irq_irq, |
| 106 | acpi_irq_handler); |
| 107 | } |
| 108 | |
| 109 | destroy_workqueue(kacpid_wq); |
| 110 | |
| 111 | return AE_OK; |
| 112 | } |
| 113 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 114 | void acpi_os_printf(const char *fmt, ...) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | { |
| 116 | va_list args; |
| 117 | va_start(args, fmt); |
| 118 | acpi_os_vprintf(fmt, args); |
| 119 | va_end(args); |
| 120 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | EXPORT_SYMBOL(acpi_os_printf); |
| 123 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 124 | void acpi_os_vprintf(const char *fmt, va_list args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | { |
| 126 | static char buffer[512]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | vsprintf(buffer, fmt, args); |
| 129 | |
| 130 | #ifdef ENABLE_DEBUGGER |
| 131 | if (acpi_in_debugger) { |
| 132 | kdb_printf("%s", buffer); |
| 133 | } else { |
| 134 | printk("%s", buffer); |
| 135 | } |
| 136 | #else |
| 137 | printk("%s", buffer); |
| 138 | #endif |
| 139 | } |
| 140 | |
David Shaohua Li | 11e981f | 2005-08-03 23:46:33 -0400 | [diff] [blame] | 141 | extern int acpi_in_resume; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 142 | void *acpi_os_allocate(acpi_size size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | { |
David Shaohua Li | 11e981f | 2005-08-03 23:46:33 -0400 | [diff] [blame] | 144 | if (acpi_in_resume) |
| 145 | return kmalloc(size, GFP_ATOMIC); |
| 146 | else |
| 147 | return kmalloc(size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
| 149 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 150 | void acpi_os_free(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | { |
| 152 | kfree(ptr); |
| 153 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | EXPORT_SYMBOL(acpi_os_free); |
| 156 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 157 | acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | { |
| 159 | if (efi_enabled) { |
| 160 | addr->pointer_type = ACPI_PHYSICAL_POINTER; |
| 161 | if (efi.acpi20) |
| 162 | addr->pointer.physical = |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 163 | (acpi_physical_address) virt_to_phys(efi.acpi20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | else if (efi.acpi) |
| 165 | addr->pointer.physical = |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 166 | (acpi_physical_address) virt_to_phys(efi.acpi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | else { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 168 | printk(KERN_ERR PREFIX |
| 169 | "System description tables not found\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | return AE_NOT_FOUND; |
| 171 | } |
| 172 | } else { |
| 173 | if (ACPI_FAILURE(acpi_find_root_pointer(flags, addr))) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 174 | printk(KERN_ERR PREFIX |
| 175 | "System description tables not found\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | return AE_NOT_FOUND; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | return AE_OK; |
| 181 | } |
| 182 | |
| 183 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 184 | acpi_os_map_memory(acpi_physical_address phys, acpi_size size, |
| 185 | void __iomem ** virt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | { |
| 187 | if (efi_enabled) { |
| 188 | if (EFI_MEMORY_WB & efi_mem_attributes(phys)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 189 | *virt = (void __iomem *)phys_to_virt(phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } else { |
| 191 | *virt = ioremap(phys, size); |
| 192 | } |
| 193 | } else { |
| 194 | if (phys > ULONG_MAX) { |
| 195 | printk(KERN_ERR PREFIX "Cannot map memory that high\n"); |
| 196 | return AE_BAD_PARAMETER; |
| 197 | } |
| 198 | /* |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 199 | * ioremap checks to ensure this is in reserved space |
| 200 | */ |
| 201 | *virt = ioremap((unsigned long)phys, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | if (!*virt) |
| 205 | return AE_NO_MEMORY; |
| 206 | |
| 207 | return AE_OK; |
| 208 | } |
| 209 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 210 | void acpi_os_unmap_memory(void __iomem * virt, acpi_size size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | { |
| 212 | iounmap(virt); |
| 213 | } |
| 214 | |
| 215 | #ifdef ACPI_FUTURE_USAGE |
| 216 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 217 | acpi_os_get_physical_address(void *virt, acpi_physical_address * phys) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 219 | if (!phys || !virt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | return AE_BAD_PARAMETER; |
| 221 | |
| 222 | *phys = virt_to_phys(virt); |
| 223 | |
| 224 | return AE_OK; |
| 225 | } |
| 226 | #endif |
| 227 | |
| 228 | #define ACPI_MAX_OVERRIDE_LEN 100 |
| 229 | |
| 230 | static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN]; |
| 231 | |
| 232 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 233 | acpi_os_predefined_override(const struct acpi_predefined_names *init_val, |
| 234 | acpi_string * new_val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | { |
| 236 | if (!init_val || !new_val) |
| 237 | return AE_BAD_PARAMETER; |
| 238 | |
| 239 | *new_val = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 240 | if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 242 | acpi_os_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | *new_val = acpi_os_name; |
| 244 | } |
| 245 | |
| 246 | return AE_OK; |
| 247 | } |
| 248 | |
| 249 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 250 | acpi_os_table_override(struct acpi_table_header * existing_table, |
| 251 | struct acpi_table_header ** new_table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | { |
| 253 | if (!existing_table || !new_table) |
| 254 | return AE_BAD_PARAMETER; |
| 255 | |
| 256 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
| 257 | if (strncmp(existing_table->signature, "DSDT", 4) == 0) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 258 | *new_table = (struct acpi_table_header *)AmlCode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | else |
| 260 | *new_table = NULL; |
| 261 | #else |
| 262 | *new_table = NULL; |
| 263 | #endif |
| 264 | return AE_OK; |
| 265 | } |
| 266 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 267 | static irqreturn_t acpi_irq(int irq, void *dev_id, struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 269 | return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 273 | acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, |
| 274 | void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
| 276 | unsigned int irq; |
| 277 | |
| 278 | /* |
| 279 | * Ignore the GSI from the core, and use the value in our copy of the |
| 280 | * FADT. It may not be the same if an interrupt source override exists |
| 281 | * for the SCI. |
| 282 | */ |
| 283 | gsi = acpi_fadt.sci_int; |
| 284 | if (acpi_gsi_to_irq(gsi, &irq) < 0) { |
| 285 | printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n", |
| 286 | gsi); |
| 287 | return AE_OK; |
| 288 | } |
| 289 | |
| 290 | acpi_irq_handler = handler; |
| 291 | acpi_irq_context = context; |
| 292 | if (request_irq(irq, acpi_irq, SA_SHIRQ, "acpi", acpi_irq)) { |
| 293 | printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq); |
| 294 | return AE_NOT_ACQUIRED; |
| 295 | } |
| 296 | acpi_irq_irq = irq; |
| 297 | |
| 298 | return AE_OK; |
| 299 | } |
| 300 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 301 | 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] | 302 | { |
| 303 | if (irq) { |
| 304 | free_irq(irq, acpi_irq); |
| 305 | acpi_irq_handler = NULL; |
| 306 | acpi_irq_irq = 0; |
| 307 | } |
| 308 | |
| 309 | return AE_OK; |
| 310 | } |
| 311 | |
| 312 | /* |
| 313 | * Running in interpreter thread context, safe to sleep |
| 314 | */ |
| 315 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 316 | void acpi_os_sleep(acpi_integer ms) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | { |
| 318 | current->state = TASK_INTERRUPTIBLE; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 319 | schedule_timeout(((signed long)ms * HZ) / 1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | EXPORT_SYMBOL(acpi_os_sleep); |
| 323 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 324 | void acpi_os_stall(u32 us) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
| 326 | while (us) { |
| 327 | u32 delay = 1000; |
| 328 | |
| 329 | if (delay > us) |
| 330 | delay = us; |
| 331 | udelay(delay); |
| 332 | touch_nmi_watchdog(); |
| 333 | us -= delay; |
| 334 | } |
| 335 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 336 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | EXPORT_SYMBOL(acpi_os_stall); |
| 338 | |
| 339 | /* |
| 340 | * Support ACPI 3.0 AML Timer operand |
| 341 | * Returns 64-bit free-running, monotonically increasing timer |
| 342 | * with 100ns granularity |
| 343 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 344 | u64 acpi_os_get_timer(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | { |
| 346 | static u64 t; |
| 347 | |
| 348 | #ifdef CONFIG_HPET |
| 349 | /* TBD: use HPET if available */ |
| 350 | #endif |
| 351 | |
| 352 | #ifdef CONFIG_X86_PM_TIMER |
| 353 | /* TBD: default to PM timer if HPET was not available */ |
| 354 | #endif |
| 355 | if (!t) |
| 356 | printk(KERN_ERR PREFIX "acpi_os_get_timer() TBD\n"); |
| 357 | |
| 358 | return ++t; |
| 359 | } |
| 360 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 361 | 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] | 362 | { |
| 363 | u32 dummy; |
| 364 | |
| 365 | if (!value) |
| 366 | value = &dummy; |
| 367 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 368 | switch (width) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | case 8: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 370 | *(u8 *) value = inb(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | break; |
| 372 | case 16: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 373 | *(u16 *) value = inw(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | break; |
| 375 | case 32: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 376 | *(u32 *) value = inl(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | break; |
| 378 | default: |
| 379 | BUG(); |
| 380 | } |
| 381 | |
| 382 | return AE_OK; |
| 383 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | EXPORT_SYMBOL(acpi_os_read_port); |
| 386 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 387 | 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] | 388 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 389 | switch (width) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | case 8: |
| 391 | outb(value, port); |
| 392 | break; |
| 393 | case 16: |
| 394 | outw(value, port); |
| 395 | break; |
| 396 | case 32: |
| 397 | outl(value, port); |
| 398 | break; |
| 399 | default: |
| 400 | BUG(); |
| 401 | } |
| 402 | |
| 403 | return AE_OK; |
| 404 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | EXPORT_SYMBOL(acpi_os_write_port); |
| 407 | |
| 408 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 409 | 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] | 410 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 411 | u32 dummy; |
| 412 | void __iomem *virt_addr; |
| 413 | int iomem = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
| 415 | if (efi_enabled) { |
| 416 | if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) { |
| 417 | /* HACK ALERT! We can use readb/w/l on real memory too.. */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 418 | virt_addr = (void __iomem *)phys_to_virt(phys_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | } else { |
| 420 | iomem = 1; |
| 421 | virt_addr = ioremap(phys_addr, width); |
| 422 | } |
| 423 | } else |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 424 | virt_addr = (void __iomem *)phys_to_virt(phys_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | if (!value) |
| 426 | value = &dummy; |
| 427 | |
| 428 | switch (width) { |
| 429 | case 8: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 430 | *(u8 *) value = readb(virt_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | break; |
| 432 | case 16: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 433 | *(u16 *) value = readw(virt_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | break; |
| 435 | case 32: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 436 | *(u32 *) value = readl(virt_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | break; |
| 438 | default: |
| 439 | BUG(); |
| 440 | } |
| 441 | |
| 442 | if (efi_enabled) { |
| 443 | if (iomem) |
| 444 | iounmap(virt_addr); |
| 445 | } |
| 446 | |
| 447 | return AE_OK; |
| 448 | } |
| 449 | |
| 450 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 451 | 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] | 452 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 453 | void __iomem *virt_addr; |
| 454 | int iomem = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | |
| 456 | if (efi_enabled) { |
| 457 | if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) { |
| 458 | /* HACK ALERT! We can use writeb/w/l on real memory too */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 459 | virt_addr = (void __iomem *)phys_to_virt(phys_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | } else { |
| 461 | iomem = 1; |
| 462 | virt_addr = ioremap(phys_addr, width); |
| 463 | } |
| 464 | } else |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 465 | virt_addr = (void __iomem *)phys_to_virt(phys_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
| 467 | switch (width) { |
| 468 | case 8: |
| 469 | writeb(value, virt_addr); |
| 470 | break; |
| 471 | case 16: |
| 472 | writew(value, virt_addr); |
| 473 | break; |
| 474 | case 32: |
| 475 | writel(value, virt_addr); |
| 476 | break; |
| 477 | default: |
| 478 | BUG(); |
| 479 | } |
| 480 | |
| 481 | if (iomem) |
| 482 | iounmap(virt_addr); |
| 483 | |
| 484 | return AE_OK; |
| 485 | } |
| 486 | |
| 487 | #ifdef CONFIG_ACPI_PCI |
| 488 | |
| 489 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 490 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
| 491 | void *value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | { |
| 493 | int result, size; |
| 494 | |
| 495 | if (!value) |
| 496 | return AE_BAD_PARAMETER; |
| 497 | |
| 498 | switch (width) { |
| 499 | case 8: |
| 500 | size = 1; |
| 501 | break; |
| 502 | case 16: |
| 503 | size = 2; |
| 504 | break; |
| 505 | case 32: |
| 506 | size = 4; |
| 507 | break; |
| 508 | default: |
| 509 | return AE_ERROR; |
| 510 | } |
| 511 | |
| 512 | BUG_ON(!raw_pci_ops); |
| 513 | |
| 514 | result = raw_pci_ops->read(pci_id->segment, pci_id->bus, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 515 | PCI_DEVFN(pci_id->device, pci_id->function), |
| 516 | reg, size, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
| 518 | return (result ? AE_ERROR : AE_OK); |
| 519 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 520 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | EXPORT_SYMBOL(acpi_os_read_pci_configuration); |
| 522 | |
| 523 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 524 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg, |
| 525 | acpi_integer value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | { |
| 527 | int result, size; |
| 528 | |
| 529 | switch (width) { |
| 530 | case 8: |
| 531 | size = 1; |
| 532 | break; |
| 533 | case 16: |
| 534 | size = 2; |
| 535 | break; |
| 536 | case 32: |
| 537 | size = 4; |
| 538 | break; |
| 539 | default: |
| 540 | return AE_ERROR; |
| 541 | } |
| 542 | |
| 543 | BUG_ON(!raw_pci_ops); |
| 544 | |
| 545 | result = raw_pci_ops->write(pci_id->segment, pci_id->bus, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 546 | PCI_DEVFN(pci_id->device, pci_id->function), |
| 547 | reg, size, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
| 549 | return (result ? AE_ERROR : AE_OK); |
| 550 | } |
| 551 | |
| 552 | /* TODO: Change code to take advantage of driver model more */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 553 | static void acpi_os_derive_pci_id_2(acpi_handle rhandle, /* upper bound */ |
| 554 | acpi_handle chandle, /* current node */ |
| 555 | struct acpi_pci_id **id, |
| 556 | int *is_bridge, u8 * bus_number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 558 | acpi_handle handle; |
| 559 | struct acpi_pci_id *pci_id = *id; |
| 560 | acpi_status status; |
| 561 | unsigned long temp; |
| 562 | acpi_object_type type; |
| 563 | u8 tu8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
| 565 | acpi_get_parent(chandle, &handle); |
| 566 | if (handle != rhandle) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 567 | acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, |
| 568 | bus_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
| 570 | status = acpi_get_type(handle, &type); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 571 | if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | return; |
| 573 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 574 | status = |
| 575 | acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, |
| 576 | &temp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | if (ACPI_SUCCESS(status)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 578 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp)); |
| 579 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | |
| 581 | if (*is_bridge) |
| 582 | pci_id->bus = *bus_number; |
| 583 | |
| 584 | /* any nicer way to get bus number of bridge ? */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 585 | status = |
| 586 | acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, |
| 587 | 8); |
| 588 | if (ACPI_SUCCESS(status) |
| 589 | && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) { |
| 590 | status = |
| 591 | acpi_os_read_pci_configuration(pci_id, 0x18, |
| 592 | &tu8, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | if (!ACPI_SUCCESS(status)) { |
| 594 | /* Certainly broken... FIX ME */ |
| 595 | return; |
| 596 | } |
| 597 | *is_bridge = 1; |
| 598 | pci_id->bus = tu8; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 599 | status = |
| 600 | acpi_os_read_pci_configuration(pci_id, 0x19, |
| 601 | &tu8, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | if (ACPI_SUCCESS(status)) { |
| 603 | *bus_number = tu8; |
| 604 | } |
| 605 | } else |
| 606 | *is_bridge = 0; |
| 607 | } |
| 608 | } |
| 609 | } |
| 610 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 611 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
| 612 | acpi_handle chandle, /* current node */ |
| 613 | struct acpi_pci_id **id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | { |
| 615 | int is_bridge = 1; |
| 616 | u8 bus_number = (*id)->bus; |
| 617 | |
| 618 | acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number); |
| 619 | } |
| 620 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 621 | #else /*!CONFIG_ACPI_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
| 623 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 624 | acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, |
| 625 | u32 reg, acpi_integer value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | { |
| 627 | return AE_SUPPORT; |
| 628 | } |
| 629 | |
| 630 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 631 | acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, |
| 632 | u32 reg, void *value, u32 width) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | { |
| 634 | return AE_SUPPORT; |
| 635 | } |
| 636 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 637 | void acpi_os_derive_pci_id(acpi_handle rhandle, /* upper bound */ |
| 638 | acpi_handle chandle, /* current node */ |
| 639 | struct acpi_pci_id **id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | { |
| 641 | } |
| 642 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 643 | #endif /*CONFIG_ACPI_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 645 | static void acpi_os_execute_deferred(void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 647 | struct acpi_os_dpc *dpc = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 649 | ACPI_FUNCTION_TRACE("os_execute_deferred"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 651 | dpc = (struct acpi_os_dpc *)context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | if (!dpc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 653 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid (NULL) context.\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | return_VOID; |
| 655 | } |
| 656 | |
| 657 | dpc->function(dpc->context); |
| 658 | |
| 659 | kfree(dpc); |
| 660 | |
| 661 | return_VOID; |
| 662 | } |
| 663 | |
| 664 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 665 | acpi_os_queue_for_execution(u32 priority, |
| 666 | acpi_osd_exec_callback function, void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 668 | acpi_status status = AE_OK; |
| 669 | struct acpi_os_dpc *dpc; |
| 670 | struct work_struct *task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 672 | ACPI_FUNCTION_TRACE("os_queue_for_execution"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 674 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 675 | "Scheduling function [%p(%p)] for deferred execution.\n", |
| 676 | function, context)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | |
| 678 | if (!function) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 679 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
| 681 | /* |
| 682 | * Allocate/initialize DPC structure. Note that this memory will be |
| 683 | * freed by the callee. The kernel handles the tq_struct list in a |
| 684 | * way that allows us to also free its memory inside the callee. |
| 685 | * Because we may want to schedule several tasks with different |
| 686 | * parameters we can't use the approach some kernel code uses of |
| 687 | * having a static tq_struct. |
| 688 | * We can save time and code by allocating the DPC and tq_structs |
| 689 | * from the same memory. |
| 690 | */ |
| 691 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 692 | dpc = |
| 693 | kmalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct), |
| 694 | GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | if (!dpc) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 696 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
| 698 | dpc->function = function; |
| 699 | dpc->context = context; |
| 700 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 701 | task = (void *)(dpc + 1); |
| 702 | INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | |
| 704 | if (!queue_work(kacpid_wq, task)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 705 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 706 | "Call to queue_work() failed.\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | kfree(dpc); |
| 708 | status = AE_ERROR; |
| 709 | } |
| 710 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 711 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 713 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | EXPORT_SYMBOL(acpi_os_queue_for_execution); |
| 715 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 716 | void acpi_os_wait_events_complete(void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | { |
| 718 | flush_workqueue(kacpid_wq); |
| 719 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | EXPORT_SYMBOL(acpi_os_wait_events_complete); |
| 722 | |
| 723 | /* |
| 724 | * Allocate the memory for a spinlock and initialize it. |
| 725 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 726 | acpi_status acpi_os_create_lock(acpi_handle * out_handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | { |
| 728 | spinlock_t *lock_ptr; |
| 729 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 730 | ACPI_FUNCTION_TRACE("os_create_lock"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | |
| 732 | lock_ptr = acpi_os_allocate(sizeof(spinlock_t)); |
| 733 | |
| 734 | spin_lock_init(lock_ptr); |
| 735 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 736 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating spinlock[%p].\n", lock_ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | |
| 738 | *out_handle = lock_ptr; |
| 739 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 740 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | } |
| 742 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | /* |
| 744 | * Deallocate the memory for a spinlock. |
| 745 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 746 | void acpi_os_delete_lock(acpi_handle handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 748 | ACPI_FUNCTION_TRACE("os_create_lock"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 750 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting spinlock[%p].\n", handle)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
| 752 | acpi_os_free(handle); |
| 753 | |
| 754 | return_VOID; |
| 755 | } |
| 756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 758 | 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] | 759 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 760 | struct semaphore *sem = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 762 | ACPI_FUNCTION_TRACE("os_create_semaphore"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | sem = acpi_os_allocate(sizeof(struct semaphore)); |
| 765 | if (!sem) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 766 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | memset(sem, 0, sizeof(struct semaphore)); |
| 768 | |
| 769 | sema_init(sem, initial_units); |
| 770 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 771 | *handle = (acpi_handle *) sem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 773 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n", |
| 774 | *handle, initial_units)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 776 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 779 | EXPORT_SYMBOL(acpi_os_create_semaphore); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | |
| 781 | /* |
| 782 | * TODO: A better way to delete semaphores? Linux doesn't have a |
| 783 | * 'delete_semaphore()' function -- may result in an invalid |
| 784 | * pointer dereference for non-synchronized consumers. Should |
| 785 | * we at least check for blocked threads and signal/cancel them? |
| 786 | */ |
| 787 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 788 | acpi_status acpi_os_delete_semaphore(acpi_handle handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 790 | struct semaphore *sem = (struct semaphore *)handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 792 | ACPI_FUNCTION_TRACE("os_delete_semaphore"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | |
| 794 | if (!sem) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 795 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 797 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 799 | acpi_os_free(sem); |
| 800 | sem = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 802 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 805 | EXPORT_SYMBOL(acpi_os_delete_semaphore); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | |
| 807 | /* |
| 808 | * TODO: The kernel doesn't have a 'down_timeout' function -- had to |
| 809 | * improvise. The process is to sleep for one scheduler quantum |
| 810 | * until the semaphore becomes available. Downside is that this |
| 811 | * may result in starvation for timeout-based waits when there's |
| 812 | * lots of semaphore activity. |
| 813 | * |
| 814 | * TODO: Support for units > 1? |
| 815 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 816 | 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] | 817 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 818 | acpi_status status = AE_OK; |
| 819 | struct semaphore *sem = (struct semaphore *)handle; |
| 820 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 822 | ACPI_FUNCTION_TRACE("os_wait_semaphore"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | |
| 824 | if (!sem || (units < 1)) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 825 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | |
| 827 | if (units > 1) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 828 | return_ACPI_STATUS(AE_SUPPORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 830 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n", |
| 831 | handle, units, timeout)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | |
| 833 | if (in_atomic()) |
| 834 | timeout = 0; |
| 835 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 836 | switch (timeout) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | /* |
| 838 | * No Wait: |
| 839 | * -------- |
| 840 | * A zero timeout value indicates that we shouldn't wait - just |
| 841 | * acquire the semaphore if available otherwise return AE_TIME |
| 842 | * (a.k.a. 'would block'). |
| 843 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 844 | case 0: |
| 845 | if (down_trylock(sem)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | status = AE_TIME; |
| 847 | break; |
| 848 | |
| 849 | /* |
| 850 | * Wait Indefinitely: |
| 851 | * ------------------ |
| 852 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 853 | case ACPI_WAIT_FOREVER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | down(sem); |
| 855 | break; |
| 856 | |
| 857 | /* |
| 858 | * Wait w/ Timeout: |
| 859 | * ---------------- |
| 860 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 861 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | // TODO: A better timeout algorithm? |
| 863 | { |
| 864 | int i = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 865 | static const int quantum_ms = 1000 / HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | |
| 867 | ret = down_trylock(sem); |
| 868 | for (i = timeout; (i > 0 && ret < 0); i -= quantum_ms) { |
| 869 | current->state = TASK_INTERRUPTIBLE; |
| 870 | schedule_timeout(1); |
| 871 | ret = down_trylock(sem); |
| 872 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | if (ret != 0) |
| 875 | status = AE_TIME; |
| 876 | } |
| 877 | break; |
| 878 | } |
| 879 | |
| 880 | if (ACPI_FAILURE(status)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 881 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 882 | "Failed to acquire semaphore[%p|%d|%d], %s\n", |
| 883 | handle, units, timeout, |
| 884 | acpi_format_exception(status))); |
| 885 | } else { |
| 886 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, |
| 887 | "Acquired semaphore[%p|%d|%d]\n", handle, |
| 888 | units, timeout)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | } |
| 890 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 891 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 894 | EXPORT_SYMBOL(acpi_os_wait_semaphore); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | |
| 896 | /* |
| 897 | * TODO: Support for units > 1? |
| 898 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 899 | acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 901 | struct semaphore *sem = (struct semaphore *)handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 903 | ACPI_FUNCTION_TRACE("os_signal_semaphore"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | |
| 905 | if (!sem || (units < 1)) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 906 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | |
| 908 | if (units > 1) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 909 | return_ACPI_STATUS(AE_SUPPORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 911 | ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle, |
| 912 | units)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
| 914 | up(sem); |
| 915 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 916 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | EXPORT_SYMBOL(acpi_os_signal_semaphore); |
| 920 | |
| 921 | #ifdef ACPI_FUTURE_USAGE |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 922 | u32 acpi_os_get_line(char *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | { |
| 924 | |
| 925 | #ifdef ENABLE_DEBUGGER |
| 926 | if (acpi_in_debugger) { |
| 927 | u32 chars; |
| 928 | |
| 929 | kdb_read(buffer, sizeof(line_buf)); |
| 930 | |
| 931 | /* remove the CR kdb includes */ |
| 932 | chars = strlen(buffer) - 1; |
| 933 | buffer[chars] = '\0'; |
| 934 | } |
| 935 | #endif |
| 936 | |
| 937 | return 0; |
| 938 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 939 | #endif /* ACPI_FUTURE_USAGE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | |
| 941 | /* Assumes no unreadable holes inbetween */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 942 | u8 acpi_os_readable(void *ptr, acpi_size len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 944 | #if defined(__i386__) || defined(__x86_64__) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | char tmp; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 946 | return !__get_user(tmp, (char __user *)ptr) |
| 947 | && !__get_user(tmp, (char __user *)ptr + len - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | #endif |
| 949 | return 1; |
| 950 | } |
| 951 | |
| 952 | #ifdef ACPI_FUTURE_USAGE |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 953 | u8 acpi_os_writable(void *ptr, acpi_size len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | { |
| 955 | /* could do dummy write (racy) or a kernel page table lookup. |
| 956 | The later may be difficult at early boot when kmap doesn't work yet. */ |
| 957 | return 1; |
| 958 | } |
| 959 | #endif |
| 960 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 961 | u32 acpi_os_get_thread_id(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | { |
| 963 | if (!in_atomic()) |
| 964 | return current->pid; |
| 965 | |
| 966 | return 0; |
| 967 | } |
| 968 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 969 | acpi_status acpi_os_signal(u32 function, void *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 971 | switch (function) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | case ACPI_SIGNAL_FATAL: |
| 973 | printk(KERN_ERR PREFIX "Fatal opcode executed\n"); |
| 974 | break; |
| 975 | case ACPI_SIGNAL_BREAKPOINT: |
| 976 | /* |
| 977 | * AML Breakpoint |
| 978 | * ACPI spec. says to treat it as a NOP unless |
| 979 | * you are debugging. So if/when we integrate |
| 980 | * AML debugger into the kernel debugger its |
| 981 | * hook will go here. But until then it is |
| 982 | * not useful to print anything on breakpoints. |
| 983 | */ |
| 984 | break; |
| 985 | default: |
| 986 | break; |
| 987 | } |
| 988 | |
| 989 | return AE_OK; |
| 990 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 991 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | EXPORT_SYMBOL(acpi_os_signal); |
| 993 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 994 | static int __init acpi_os_name_setup(char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | { |
| 996 | char *p = acpi_os_name; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 997 | int count = ACPI_MAX_OVERRIDE_LEN - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | |
| 999 | if (!str || !*str) |
| 1000 | return 0; |
| 1001 | |
| 1002 | for (; count-- && str && *str; str++) { |
| 1003 | if (isalnum(*str) || *str == ' ' || *str == ':') |
| 1004 | *p++ = *str; |
| 1005 | else if (*str == '\'' || *str == '"') |
| 1006 | continue; |
| 1007 | else |
| 1008 | break; |
| 1009 | } |
| 1010 | *p = 0; |
| 1011 | |
| 1012 | return 1; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | } |
| 1015 | |
| 1016 | __setup("acpi_os_name=", acpi_os_name_setup); |
| 1017 | |
| 1018 | /* |
| 1019 | * _OSI control |
| 1020 | * empty string disables _OSI |
| 1021 | * TBD additional string adds to _OSI |
| 1022 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1023 | static int __init acpi_osi_setup(char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | { |
| 1025 | if (str == NULL || *str == '\0') { |
| 1026 | printk(KERN_INFO PREFIX "_OSI method disabled\n"); |
| 1027 | acpi_gbl_create_osi_method = FALSE; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1028 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | /* TBD */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1030 | printk(KERN_ERR PREFIX "_OSI additional string ignored -- %s\n", |
| 1031 | str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | } |
| 1033 | |
| 1034 | return 1; |
| 1035 | } |
| 1036 | |
| 1037 | __setup("acpi_osi=", acpi_osi_setup); |
| 1038 | |
| 1039 | /* enable serialization to combat AE_ALREADY_EXISTS errors */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1040 | static int __init acpi_serialize_setup(char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | { |
| 1042 | printk(KERN_INFO PREFIX "serialize enabled\n"); |
| 1043 | |
| 1044 | acpi_gbl_all_methods_serialized = TRUE; |
| 1045 | |
| 1046 | return 1; |
| 1047 | } |
| 1048 | |
| 1049 | __setup("acpi_serialize", acpi_serialize_setup); |
| 1050 | |
| 1051 | /* |
| 1052 | * Wake and Run-Time GPES are expected to be separate. |
| 1053 | * We disable wake-GPEs at run-time to prevent spurious |
| 1054 | * interrupts. |
| 1055 | * |
| 1056 | * However, if a system exists that shares Wake and |
| 1057 | * Run-time events on the same GPE this flag is available |
| 1058 | * to tell Linux to keep the wake-time GPEs enabled at run-time. |
| 1059 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1060 | static int __init acpi_wake_gpes_always_on_setup(char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | { |
| 1062 | printk(KERN_INFO PREFIX "wake GPEs not disabled\n"); |
| 1063 | |
| 1064 | acpi_gbl_leave_wake_gpes_disabled = FALSE; |
| 1065 | |
| 1066 | return 1; |
| 1067 | } |
| 1068 | |
| 1069 | __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); |
| 1070 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1071 | int __init acpi_hotkey_setup(char *str) |
Luming Yu | fb9802f | 2005-03-18 18:03:45 -0500 | [diff] [blame] | 1072 | { |
| 1073 | acpi_specific_hotkey_enabled = TRUE; |
| 1074 | return 1; |
| 1075 | } |
| 1076 | |
| 1077 | __setup("acpi_specific_hotkey", acpi_hotkey_setup); |
| 1078 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | /* |
| 1080 | * max_cstate is defined in the base kernel so modules can |
| 1081 | * change it w/o depending on the state of the processor module. |
| 1082 | */ |
| 1083 | unsigned int max_cstate = ACPI_PROCESSOR_MAX_POWER; |
| 1084 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | EXPORT_SYMBOL(max_cstate); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1086 | |
| 1087 | /* |
| 1088 | * Acquire a spinlock. |
| 1089 | * |
| 1090 | * handle is a pointer to the spinlock_t. |
| 1091 | * flags is *not* the result of save_flags - it is an ACPI-specific flag variable |
| 1092 | * that indicates whether we are at interrupt level. |
| 1093 | */ |
| 1094 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1095 | unsigned long acpi_os_acquire_lock(acpi_handle handle) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1096 | { |
| 1097 | unsigned long flags; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1098 | spin_lock_irqsave((spinlock_t *) handle, flags); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1099 | return flags; |
| 1100 | } |
| 1101 | |
| 1102 | /* |
| 1103 | * Release a spinlock. See above. |
| 1104 | */ |
| 1105 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1106 | void acpi_os_release_lock(acpi_handle handle, unsigned long flags) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1107 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1108 | spin_unlock_irqrestore((spinlock_t *) handle, flags); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1109 | } |
| 1110 | |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1111 | #ifndef ACPI_USE_LOCAL_CACHE |
| 1112 | |
| 1113 | /******************************************************************************* |
| 1114 | * |
| 1115 | * FUNCTION: acpi_os_create_cache |
| 1116 | * |
| 1117 | * PARAMETERS: CacheName - Ascii name for the cache |
| 1118 | * ObjectSize - Size of each cached object |
| 1119 | * MaxDepth - Maximum depth of the cache (in objects) |
| 1120 | * ReturnCache - Where the new cache object is returned |
| 1121 | * |
| 1122 | * RETURN: Status |
| 1123 | * |
| 1124 | * DESCRIPTION: Create a cache object |
| 1125 | * |
| 1126 | ******************************************************************************/ |
| 1127 | |
| 1128 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1129 | 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] | 1130 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1131 | *cache = kmem_cache_create(name, size, 0, 0, NULL, NULL); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1132 | return AE_OK; |
| 1133 | } |
| 1134 | |
| 1135 | /******************************************************************************* |
| 1136 | * |
| 1137 | * FUNCTION: acpi_os_purge_cache |
| 1138 | * |
| 1139 | * PARAMETERS: Cache - Handle to cache object |
| 1140 | * |
| 1141 | * RETURN: Status |
| 1142 | * |
| 1143 | * DESCRIPTION: Free all objects within the requested cache. |
| 1144 | * |
| 1145 | ******************************************************************************/ |
| 1146 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1147 | acpi_status acpi_os_purge_cache(acpi_cache_t * cache) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1148 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1149 | (void)kmem_cache_shrink(cache); |
| 1150 | return (AE_OK); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1151 | } |
| 1152 | |
| 1153 | /******************************************************************************* |
| 1154 | * |
| 1155 | * FUNCTION: acpi_os_delete_cache |
| 1156 | * |
| 1157 | * PARAMETERS: Cache - Handle to cache object |
| 1158 | * |
| 1159 | * RETURN: Status |
| 1160 | * |
| 1161 | * DESCRIPTION: Free all objects within the requested cache and delete the |
| 1162 | * cache object. |
| 1163 | * |
| 1164 | ******************************************************************************/ |
| 1165 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1166 | acpi_status acpi_os_delete_cache(acpi_cache_t * cache) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1167 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1168 | (void)kmem_cache_destroy(cache); |
| 1169 | return (AE_OK); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | /******************************************************************************* |
| 1173 | * |
| 1174 | * FUNCTION: acpi_os_release_object |
| 1175 | * |
| 1176 | * PARAMETERS: Cache - Handle to cache object |
| 1177 | * Object - The object to be released |
| 1178 | * |
| 1179 | * RETURN: None |
| 1180 | * |
| 1181 | * DESCRIPTION: Release an object to the specified cache. If cache is full, |
| 1182 | * the object is deleted. |
| 1183 | * |
| 1184 | ******************************************************************************/ |
| 1185 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1186 | acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1187 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1188 | kmem_cache_free(cache, object); |
| 1189 | return (AE_OK); |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | /******************************************************************************* |
| 1193 | * |
| 1194 | * FUNCTION: acpi_os_acquire_object |
| 1195 | * |
| 1196 | * PARAMETERS: Cache - Handle to cache object |
| 1197 | * ReturnObject - Where the object is returned |
| 1198 | * |
| 1199 | * RETURN: Status |
| 1200 | * |
| 1201 | * DESCRIPTION: Get an object from the specified cache. If cache is empty, |
| 1202 | * the object is allocated. |
| 1203 | * |
| 1204 | ******************************************************************************/ |
| 1205 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1206 | void *acpi_os_acquire_object(acpi_cache_t * cache) |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1207 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 1208 | void *object = kmem_cache_alloc(cache, GFP_KERNEL); |
| 1209 | WARN_ON(!object); |
| 1210 | return object; |
Robert Moore | 73459f7 | 2005-06-24 00:00:00 -0400 | [diff] [blame] | 1211 | } |
| 1212 | |
| 1213 | #endif |