#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/nmi.h>
+#include <linux/kthread.h>
#include <acpi/acpi.h>
#include <asm/io.h>
#include <acpi/acpi_bus.h>
{
if (efi_enabled) {
addr->pointer_type = ACPI_PHYSICAL_POINTER;
- if (efi.acpi20)
- addr->pointer.physical =
- (acpi_physical_address) virt_to_phys(efi.acpi20);
- else if (efi.acpi)
- addr->pointer.physical =
- (acpi_physical_address) virt_to_phys(efi.acpi);
+ if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+ addr->pointer.physical = efi.acpi20;
+ else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+ addr->pointer.physical = efi.acpi;
else {
printk(KERN_ERR PREFIX
"System description tables not found\n");
acpi_os_map_memory(acpi_physical_address phys, acpi_size size,
void __iomem ** virt)
{
- 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 AE_BAD_PARAMETER;
}
+ /*
+ * ioremap checks to ensure this is in reserved space
+ */
+ *virt = ioremap((unsigned long)phys, size);
if (!*virt)
return AE_NO_MEMORY;
return AE_OK;
}
+EXPORT_SYMBOL_GPL(acpi_os_map_memory);
void acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
{
iounmap(virt);
}
+EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
#ifdef ACPI_FUTURE_USAGE
acpi_status
{
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;
}
return_VOID;
}
-acpi_status
-acpi_os_queue_for_execution(u32 priority,
+static int acpi_os_execute_thread(void *context)
+{
+ struct acpi_os_dpc *dpc = (struct acpi_os_dpc *)context;
+ if (dpc) {
+ dpc->function(dpc->context);
+ kfree(dpc);
+ }
+ do_exit(0);
+}
+
+/*******************************************************************************
+ *
+ * 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));
+ struct task_struct *p;
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
* We can save time and code by allocating the DPC and tq_structs
* from the same memory.
*/
-
- dpc =
- kmalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct),
- GFP_ATOMIC);
+ if (type == OSL_NOTIFY_HANDLER) {
+ dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_KERNEL);
+ } else {
+ dpc = kmalloc(sizeof(struct acpi_os_dpc) +
+ sizeof(struct work_struct), GFP_ATOMIC);
+ }
if (!dpc)
- return_ACPI_STATUS(AE_NO_MEMORY);
-
+ return 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,
- "Call to queue_work() failed.\n"));
- kfree(dpc);
- status = AE_ERROR;
+ if (type == OSL_NOTIFY_HANDLER) {
+ p = kthread_create(acpi_os_execute_thread, dpc, "kacpid_notify");
+ if (!IS_ERR(p)) {
+ wake_up_process(p);
+ } else {
+ status = AE_NO_MEMORY;
+ kfree(dpc);
+ }
+ } else {
+ task = (void *)(dpc + 1);
+ INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc);
+ if (!queue_work(kacpid_wq, task)) {
+ status = AE_ERROR;
+ kfree(dpc);
+ }
}
-
- return_ACPI_STATUS(status);
+ return status;
}
-EXPORT_SYMBOL(acpi_os_queue_for_execution);
+EXPORT_SYMBOL(acpi_os_execute);
void acpi_os_wait_events_complete(void *context)
{
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n",
handle, units, timeout));
- if (in_atomic())
- timeout = 0;
-
switch (timeout) {
/*
* No Wait:
static const int quantum_ms = 1000 / HZ;
ret = down_trylock(sem);
- for (i = timeout; (i > 0 && ret < 0); i -= quantum_ms) {
+ for (i = timeout; (i > 0 && ret != 0); i -= quantum_ms) {
schedule_timeout_interruptible(1);
ret = down_trylock(sem);
}
}
#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) {
* Acquire a spinlock.
*
* handle is a pointer to the spinlock_t.
- * flags is *not* the result of save_flags - it is an ACPI-specific flag variable
- * that indicates whether we are at interrupt level.
*/
-unsigned long acpi_os_acquire_lock(acpi_handle handle)
+acpi_cpu_flags acpi_os_acquire_lock(acpi_handle handle)
{
- unsigned long flags;
+ acpi_cpu_flags flags;
spin_lock_irqsave((spinlock_t *) handle, flags);
return flags;
}
* Release a spinlock. See above.
*/
-void acpi_os_release_lock(acpi_handle handle, unsigned long flags)
+void acpi_os_release_lock(acpi_handle handle, acpi_cpu_flags flags)
{
spin_unlock_irqrestore((spinlock_t *) handle, flags);
}
*
* 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;
}
/*******************************************************************************
*
* RETURN: Status
*
- * DESCRIPTION: Get an object from the specified cache. If cache is empty,
- * the object is allocated.
+ * DESCRIPTION: Return a zero-filled object.
*
******************************************************************************/
void *acpi_os_acquire_object(acpi_cache_t * cache)
{
- void *object = kmem_cache_alloc(cache, GFP_KERNEL);
+ void *object = kmem_cache_zalloc(cache, GFP_KERNEL);
WARN_ON(!object);
return object;
}
+/******************************************************************************
+ *
+ * FUNCTION: acpi_os_validate_interface
+ *
+ * PARAMETERS: interface - Requested interface to be validated
+ *
+ * RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise
+ *
+ * DESCRIPTION: Match an interface string to the interfaces supported by the
+ * host. Strings originate from an AML call to the _OSI method.
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_validate_interface (char *interface)
+{
+
+ 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;
+}
+
+
#endif
git.openpandora.org / pandora-kernel.git / blobdiff