*
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/pci.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/kmod.h>
#include <linux/delay.h>
+#include <linux/dmi.h>
#include <linux/workqueue.h>
#include <linux/nmi.h>
+#include <linux/acpi.h>
#include <acpi/acpi.h>
#include <asm/io.h>
#include <acpi/acpi_bus.h>
#include <linux/efi.h>
#define _COMPONENT ACPI_OS_SERVICES
-ACPI_MODULE_NAME("osl")
+ACPI_MODULE_NAME("osl");
#define PREFIX "ACPI: "
struct acpi_os_dpc {
acpi_osd_exec_callback function;
void *context;
+ struct work_struct work;
};
#ifdef CONFIG_ACPI_CUSTOM_DSDT
extern char line_buf[80];
#endif /*ENABLE_DEBUGGER */
-int acpi_specific_hotkey_enabled = TRUE;
-EXPORT_SYMBOL(acpi_specific_hotkey_enabled);
-
static unsigned int acpi_irq_irq;
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
+static struct workqueue_struct *kacpi_notify_wq;
+
+#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
+static char osi_additional_string[OSI_STRING_LENGTH_MAX];
+
+#define OSI_LINUX_ENABLED
+#ifdef OSI_LINUX_ENABLED
+int osi_linux = 1; /* enable _OSI(Linux) by default */
+#else
+int osi_linux; /* disable _OSI(Linux) by default */
+#endif
+
+
+#ifdef CONFIG_DMI
+static struct __initdata dmi_system_id acpi_osl_dmi_table[];
+#endif
+
+static void __init acpi_request_region (struct acpi_generic_address *addr,
+ unsigned int length, char *desc)
+{
+ struct resource *res;
+
+ if (!addr->address || !length)
+ return;
+
+ if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+ res = request_region(addr->address, length, desc);
+ else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
+ res = request_mem_region(addr->address, length, desc);
+}
+
+static int __init acpi_reserve_resources(void)
+{
+ acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length,
+ "ACPI PM1a_EVT_BLK");
+
+ acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length,
+ "ACPI PM1b_EVT_BLK");
+
+ acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length,
+ "ACPI PM1a_CNT_BLK");
+
+ acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length,
+ "ACPI PM1b_CNT_BLK");
+
+ if (acpi_gbl_FADT.pm_timer_length == 4)
+ acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR");
+
+ acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length,
+ "ACPI PM2_CNT_BLK");
+
+ /* Length of GPE blocks must be a non-negative multiple of 2 */
+
+ if (!(acpi_gbl_FADT.gpe0_block_length & 0x1))
+ acpi_request_region(&acpi_gbl_FADT.xgpe0_block,
+ acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK");
+
+ if (!(acpi_gbl_FADT.gpe1_block_length & 0x1))
+ acpi_request_region(&acpi_gbl_FADT.xgpe1_block,
+ acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK");
-acpi_status acpi_os_initialize(void)
+ return 0;
+}
+device_initcall(acpi_reserve_resources);
+
+acpi_status __init acpi_os_initialize(void)
{
+ dmi_check_system(acpi_osl_dmi_table);
return AE_OK;
}
return AE_NULL_ENTRY;
}
kacpid_wq = create_singlethread_workqueue("kacpid");
+ kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
BUG_ON(!kacpid_wq);
-
+ BUG_ON(!kacpi_notify_wq);
return AE_OK;
}
}
destroy_workqueue(kacpid_wq);
+ destroy_workqueue(kacpi_notify_wq);
return AE_OK;
}
#endif
}
-extern int acpi_in_resume;
-void *acpi_os_allocate(acpi_size size)
-{
- if (acpi_in_resume)
- return kmalloc(size, GFP_ATOMIC);
- else
- return kmalloc(size, GFP_KERNEL);
-}
-
-void acpi_os_free(void *ptr)
-{
- kfree(ptr);
-}
-
-EXPORT_SYMBOL(acpi_os_free);
-
-acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr)
+acpi_physical_address __init acpi_os_get_root_pointer(void)
{
if (efi_enabled) {
- addr->pointer_type = ACPI_PHYSICAL_POINTER;
if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
- addr->pointer.physical = efi.acpi20;
+ return efi.acpi20;
else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
- addr->pointer.physical = efi.acpi;
+ return efi.acpi;
else {
printk(KERN_ERR PREFIX
"System description tables not found\n");
- return AE_NOT_FOUND;
+ return 0;
}
- } else {
- if (ACPI_FAILURE(acpi_find_root_pointer(flags, addr))) {
- printk(KERN_ERR PREFIX
- "System description tables not found\n");
- return AE_NOT_FOUND;
- }
- }
-
- return AE_OK;
+ } else
+ return acpi_find_rsdp();
}
-acpi_status
-acpi_os_map_memory(acpi_physical_address phys, acpi_size size,
- void __iomem ** virt)
+void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
{
- if (efi_enabled) {
- if (EFI_MEMORY_WB & efi_mem_attributes(phys)) {
- *virt = (void __iomem *)phys_to_virt(phys);
- } else {
- *virt = ioremap(phys, size);
- }
- } else {
- if (phys > ULONG_MAX) {
- printk(KERN_ERR PREFIX "Cannot map memory that high\n");
- return AE_BAD_PARAMETER;
- }
- /*
- * ioremap checks to ensure this is in reserved space
- */
- *virt = ioremap((unsigned long)phys, size);
+ if (phys > ULONG_MAX) {
+ printk(KERN_ERR PREFIX "Cannot map memory that high\n");
+ return NULL;
}
-
- if (!*virt)
- return AE_NO_MEMORY;
-
- return AE_OK;
+ if (acpi_gbl_permanent_mmap)
+ /*
+ * ioremap checks to ensure this is in reserved space
+ */
+ return ioremap((unsigned long)phys, size);
+ else
+ return __acpi_map_table((unsigned long)phys, size);
}
EXPORT_SYMBOL_GPL(acpi_os_map_memory);
void acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
{
- iounmap(virt);
+ if (acpi_gbl_permanent_mmap) {
+ iounmap(virt);
+ }
}
EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
return AE_OK;
}
-static irqreturn_t acpi_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t acpi_irq(int irq, void *dev_id)
{
return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE;
}
* FADT. It may not be the same if an interrupt source override exists
* for the SCI.
*/
- gsi = acpi_fadt.sci_int;
+ gsi = acpi_gbl_FADT.sci_interrupt;
if (acpi_gsi_to_irq(gsi, &irq) < 0) {
printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n",
gsi);
acpi_irq_handler = handler;
acpi_irq_context = context;
- if (request_irq(irq, acpi_irq, SA_SHIRQ, "acpi", acpi_irq)) {
+ if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) {
printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq);
return AE_NOT_ACQUIRED;
}
{
u32 dummy;
void __iomem *virt_addr;
- int iomem = 0;
- if (efi_enabled) {
- if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) {
- /* HACK ALERT! We can use readb/w/l on real memory too.. */
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
- } else {
- iomem = 1;
- virt_addr = ioremap(phys_addr, width);
- }
- } else
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
+ virt_addr = ioremap(phys_addr, width);
if (!value)
value = &dummy;
BUG();
}
- if (efi_enabled) {
- if (iomem)
- iounmap(virt_addr);
- }
+ iounmap(virt_addr);
return AE_OK;
}
acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
{
void __iomem *virt_addr;
- int iomem = 0;
- if (efi_enabled) {
- if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) {
- /* HACK ALERT! We can use writeb/w/l on real memory too */
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
- } else {
- iomem = 1;
- virt_addr = ioremap(phys_addr, width);
- }
- } else
- virt_addr = (void __iomem *)phys_to_virt(phys_addr);
+ virt_addr = ioremap(phys_addr, width);
switch (width) {
case 8:
BUG();
}
- if (iomem)
- iounmap(virt_addr);
+ iounmap(virt_addr);
return AE_OK;
}
acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number);
}
-static void acpi_os_execute_deferred(void *context)
+static void acpi_os_execute_deferred(struct work_struct *work)
{
- struct acpi_os_dpc *dpc = NULL;
+ struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
+ if (!dpc) {
+ printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
+ return;
+ }
- ACPI_FUNCTION_TRACE("os_execute_deferred");
+ dpc->function(dpc->context);
+ kfree(dpc);
+
+ /* Yield cpu to notify thread */
+ cond_resched();
+
+ return;
+}
+
+static void acpi_os_execute_notify(struct work_struct *work)
+{
+ struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
- dpc = (struct acpi_os_dpc *)context;
if (!dpc) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid (NULL) context.\n"));
- return_VOID;
+ printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
+ return;
}
dpc->function(dpc->context);
kfree(dpc);
- return_VOID;
+ return;
}
-acpi_status
-acpi_os_queue_for_execution(u32 priority,
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_os_execute
+ *
+ * PARAMETERS: Type - Type of the callback
+ * Function - Function to be executed
+ * Context - Function parameters
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Depending on type, either queues function for deferred execution or
+ * immediately executes function on a separate thread.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_os_execute(acpi_execute_type type,
acpi_osd_exec_callback function, void *context)
{
acpi_status status = AE_OK;
struct acpi_os_dpc *dpc;
- struct work_struct *task;
-
- ACPI_FUNCTION_TRACE("os_queue_for_execution");
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Scheduling function [%p(%p)] for deferred execution.\n",
function, context));
if (!function)
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
/*
* Allocate/initialize DPC structure. Note that this memory will be
- * freed by the callee. The kernel handles the tq_struct list in a
+ * freed by the callee. The kernel handles the work_struct list in a
* way that allows us to also free its memory inside the callee.
* Because we may want to schedule several tasks with different
* parameters we can't use the approach some kernel code uses of
- * having a static tq_struct.
- * We can save time and code by allocating the DPC and tq_structs
- * from the same memory.
+ * having a static work_struct.
*/
- dpc =
- kmalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct),
- GFP_ATOMIC);
+ dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
if (!dpc)
return_ACPI_STATUS(AE_NO_MEMORY);
dpc->function = function;
dpc->context = context;
- task = (void *)(dpc + 1);
- INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc);
-
- if (!queue_work(kacpid_wq, task)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ if (type == OSL_NOTIFY_HANDLER) {
+ INIT_WORK(&dpc->work, acpi_os_execute_notify);
+ if (!queue_work(kacpi_notify_wq, &dpc->work)) {
+ status = AE_ERROR;
+ kfree(dpc);
+ }
+ } else {
+ INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+ if (!queue_work(kacpid_wq, &dpc->work)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Call to queue_work() failed.\n"));
- kfree(dpc);
- status = AE_ERROR;
+ status = AE_ERROR;
+ kfree(dpc);
+ }
}
-
return_ACPI_STATUS(status);
}
-EXPORT_SYMBOL(acpi_os_queue_for_execution);
+EXPORT_SYMBOL(acpi_os_execute);
void acpi_os_wait_events_complete(void *context)
{
/*
* Allocate the memory for a spinlock and initialize it.
*/
-acpi_status acpi_os_create_lock(acpi_handle * out_handle)
+acpi_status acpi_os_create_lock(acpi_spinlock * handle)
{
- spinlock_t *lock_ptr;
+ spin_lock_init(*handle);
- ACPI_FUNCTION_TRACE("os_create_lock");
-
- lock_ptr = acpi_os_allocate(sizeof(spinlock_t));
-
- spin_lock_init(lock_ptr);
-
- ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating spinlock[%p].\n", lock_ptr));
-
- *out_handle = lock_ptr;
-
- return_ACPI_STATUS(AE_OK);
+ return AE_OK;
}
/*
* Deallocate the memory for a spinlock.
*/
-void acpi_os_delete_lock(acpi_handle handle)
+void acpi_os_delete_lock(acpi_spinlock handle)
{
- ACPI_FUNCTION_TRACE("os_create_lock");
-
- ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting spinlock[%p].\n", handle));
-
- acpi_os_free(handle);
-
- return_VOID;
+ return;
}
acpi_status
{
struct semaphore *sem = NULL;
- ACPI_FUNCTION_TRACE("os_create_semaphore");
sem = acpi_os_allocate(sizeof(struct semaphore));
if (!sem)
- return_ACPI_STATUS(AE_NO_MEMORY);
+ return AE_NO_MEMORY;
memset(sem, 0, sizeof(struct semaphore));
sema_init(sem, initial_units);
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n",
*handle, initial_units));
- return_ACPI_STATUS(AE_OK);
+ return AE_OK;
}
EXPORT_SYMBOL(acpi_os_create_semaphore);
{
struct semaphore *sem = (struct semaphore *)handle;
- ACPI_FUNCTION_TRACE("os_delete_semaphore");
if (!sem)
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle));
- acpi_os_free(sem);
+ kfree(sem);
sem = NULL;
- return_ACPI_STATUS(AE_OK);
+ return AE_OK;
}
EXPORT_SYMBOL(acpi_os_delete_semaphore);
struct semaphore *sem = (struct semaphore *)handle;
int ret = 0;
- ACPI_FUNCTION_TRACE("os_wait_semaphore");
if (!sem || (units < 1))
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
if (units > 1)
- return_ACPI_STATUS(AE_SUPPORT);
+ return AE_SUPPORT;
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n",
handle, units, timeout));
- if (in_atomic())
- timeout = 0;
+ /*
+ * This can be called during resume with interrupts off.
+ * Like boot-time, we should be single threaded and will
+ * always get the lock if we try -- timeout or not.
+ * If this doesn't succeed, then we will oops courtesy of
+ * might_sleep() in down().
+ */
+ if (!down_trylock(sem))
+ return AE_OK;
switch (timeout) {
/*
}
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Failed to acquire semaphore[%p|%d|%d], %s\n",
+ ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
+ "Failed to acquire semaphore[%p|%d|%d], %s",
handle, units, timeout,
acpi_format_exception(status)));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
- "Acquired semaphore[%p|%d|%d]\n", handle,
+ "Acquired semaphore[%p|%d|%d]", handle,
units, timeout));
}
- return_ACPI_STATUS(status);
+ return status;
}
EXPORT_SYMBOL(acpi_os_wait_semaphore);
{
struct semaphore *sem = (struct semaphore *)handle;
- ACPI_FUNCTION_TRACE("os_signal_semaphore");
if (!sem || (units < 1))
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
if (units > 1)
- return_ACPI_STATUS(AE_SUPPORT);
+ return AE_SUPPORT;
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle,
units));
up(sem);
- return_ACPI_STATUS(AE_OK);
+ return AE_OK;
}
EXPORT_SYMBOL(acpi_os_signal_semaphore);
}
#endif /* ACPI_FUTURE_USAGE */
-/* Assumes no unreadable holes inbetween */
-u8 acpi_os_readable(void *ptr, acpi_size len)
-{
-#if defined(__i386__) || defined(__x86_64__)
- char tmp;
- return !__get_user(tmp, (char __user *)ptr)
- && !__get_user(tmp, (char __user *)ptr + len - 1);
-#endif
- return 1;
-}
-
-#ifdef ACPI_FUTURE_USAGE
-u8 acpi_os_writable(void *ptr, acpi_size len)
-{
- /* could do dummy write (racy) or a kernel page table lookup.
- The later may be difficult at early boot when kmap doesn't work yet. */
- return 1;
-}
-#endif
-
-u32 acpi_os_get_thread_id(void)
-{
- if (!in_atomic())
- return current->pid;
-
- return 0;
-}
-
acpi_status acpi_os_signal(u32 function, void *info)
{
switch (function) {
__setup("acpi_os_name=", acpi_os_name_setup);
+static void enable_osi_linux(int enable) {
+
+ if (osi_linux != enable)
+ printk(KERN_INFO PREFIX "%sabled _OSI(Linux)\n",
+ enable ? "En": "Dis");
+
+ osi_linux = enable;
+ return;
+}
+
/*
- * _OSI control
+ * Modify the list of "OS Interfaces" reported to BIOS via _OSI
+ *
* empty string disables _OSI
- * TBD additional string adds to _OSI
+ * string starting with '!' disables that string
+ * otherwise string is added to list, augmenting built-in strings
*/
static int __init acpi_osi_setup(char *str)
{
if (str == NULL || *str == '\0') {
printk(KERN_INFO PREFIX "_OSI method disabled\n");
acpi_gbl_create_osi_method = FALSE;
- } else {
- /* TBD */
- printk(KERN_ERR PREFIX "_OSI additional string ignored -- %s\n",
- str);
+ } else if (*str == '!') {
+ if (acpi_osi_invalidate(++str) == AE_OK)
+ printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
+ } else if (!strcmp("!Linux", str)) {
+ enable_osi_linux(0);
+ } else if (!strcmp("Linux", str)) {
+ enable_osi_linux(1);
+ } else if (*osi_additional_string == '\0') {
+ strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX);
+ printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
}
return 1;
__setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup);
-static int __init acpi_hotkey_setup(char *str)
-{
- acpi_specific_hotkey_enabled = FALSE;
- return 1;
-}
-
-__setup("acpi_generic_hotkey", acpi_hotkey_setup);
-
/*
* max_cstate is defined in the base kernel so modules can
* change it w/o depending on the state of the processor module.
* handle is a pointer to the spinlock_t.
*/
-acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle)
+acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp)
{
acpi_cpu_flags flags;
- spin_lock_irqsave((spinlock_t *) handle, flags);
+ spin_lock_irqsave(lockp, flags);
return flags;
}
* Release a spinlock. See above.
*/
-void acpi_os_release_lock(acpi_handle handle, acpi_cpu_flags flags)
+void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags)
{
- spin_unlock_irqrestore((spinlock_t *) handle, flags);
+ spin_unlock_irqrestore(lockp, flags);
}
#ifndef ACPI_USE_LOCAL_CACHE
*
* FUNCTION: acpi_os_create_cache
*
- * PARAMETERS: CacheName - Ascii name for the cache
- * ObjectSize - Size of each cached object
- * MaxDepth - Maximum depth of the cache (in objects)
- * ReturnCache - Where the new cache object is returned
+ * PARAMETERS: name - Ascii name for the cache
+ * size - Size of each cached object
+ * depth - Maximum depth of the cache (in objects) <ignored>
+ * cache - Where the new cache object is returned
*
- * RETURN: Status
+ * RETURN: status
*
* DESCRIPTION: Create a cache object
*
acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache)
{
*cache = kmem_cache_create(name, size, 0, 0, NULL, NULL);
- return AE_OK;
+ if (*cache == NULL)
+ return AE_ERROR;
+ else
+ return AE_OK;
}
/*******************************************************************************
acpi_status acpi_os_purge_cache(acpi_cache_t * cache)
{
- (void)kmem_cache_shrink(cache);
+ kmem_cache_shrink(cache);
return (AE_OK);
}
acpi_status acpi_os_delete_cache(acpi_cache_t * cache)
{
- (void)kmem_cache_destroy(cache);
+ kmem_cache_destroy(cache);
return (AE_OK);
}
return (AE_OK);
}
-/*******************************************************************************
+/******************************************************************************
*
- * FUNCTION: acpi_os_acquire_object
+ * FUNCTION: acpi_os_validate_interface
*
- * PARAMETERS: Cache - Handle to cache object
- * ReturnObject - Where the object is returned
+ * PARAMETERS: interface - Requested interface to be validated
*
- * RETURN: Status
+ * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise
*
- * DESCRIPTION: Get an object from the specified cache. If cache is empty,
- * the object is allocated.
+ * DESCRIPTION: Match an interface string to the interfaces supported by the
+ * host. Strings originate from an AML call to the _OSI method.
*
- ******************************************************************************/
+ *****************************************************************************/
-void *acpi_os_acquire_object(acpi_cache_t * cache)
+acpi_status
+acpi_os_validate_interface (char *interface)
{
- void *object = kmem_cache_alloc(cache, GFP_KERNEL);
- WARN_ON(!object);
- return object;
+ if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX))
+ return AE_OK;
+ if (!strcmp("Linux", interface)) {
+ printk(KERN_WARNING PREFIX
+ "System BIOS is requesting _OSI(Linux)\n");
+#ifdef OSI_LINUX_ENABLED
+ printk(KERN_WARNING PREFIX
+ "Please test with \"acpi_osi=!Linux\"\n"
+ "Please send dmidecode "
+ "to linux-acpi@vger.kernel.org\n");
+#else
+ printk(KERN_WARNING PREFIX
+ "If \"acpi_osi=Linux\" works better,\n"
+ "Please send dmidecode "
+ "to linux-acpi@vger.kernel.org\n");
+#endif
+ if(osi_linux)
+ return AE_OK;
+ }
+ return AE_SUPPORT;
}
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_validate_address
+ *
+ * PARAMETERS: space_id - ACPI space ID
+ * address - Physical address
+ * length - Address length
+ *
+ * RETURN: AE_OK if address/length is valid for the space_id. Otherwise,
+ * should return AE_AML_ILLEGAL_ADDRESS.
+ *
+ * DESCRIPTION: Validate a system address via the host OS. Used to validate
+ * the addresses accessed by AML operation regions.
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_validate_address (
+ u8 space_id,
+ acpi_physical_address address,
+ acpi_size length)
+{
+
+ return AE_OK;
+}
+
+#ifdef CONFIG_DMI
+#ifdef OSI_LINUX_ENABLED
+static int dmi_osi_not_linux(struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE "%s detected: requires not _OSI(Linux)\n", d->ident);
+ enable_osi_linux(0);
+ return 0;
+}
+#else
+static int dmi_osi_linux(struct dmi_system_id *d)
+{
+ printk(KERN_NOTICE "%s detected: requires _OSI(Linux)\n", d->ident);
+ enable_osi_linux(1);
+ return 0;
+}
+#endif
+
+static struct dmi_system_id acpi_osl_dmi_table[] __initdata = {
+#ifdef OSI_LINUX_ENABLED
+ /*
+ * Boxes that need NOT _OSI(Linux)
+ */
+ {
+ .callback = dmi_osi_not_linux,
+ .ident = "Toshiba Satellite P100",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_BOARD_NAME, "Satellite P100"),
+ },
+ },
+#else
+ /*
+ * Boxes that need _OSI(Linux)
+ */
+ {
+ .callback = dmi_osi_linux,
+ .ident = "Intel Napa CRB",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
+ DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"),
+ },
+ },
+#endif
+ {}
+};
+#endif /* CONFIG_DMI */
+
#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff