static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
static struct workqueue_struct *kacpi_notify_wq;
+static struct workqueue_struct *kacpi_hotplug_wq;
struct acpi_res_list {
resource_size_t start;
return AE_OK;
}
+static void bind_to_cpu0(struct work_struct *work)
+{
+ set_cpus_allowed(current, cpumask_of_cpu(0));
+ kfree(work);
+}
+
+static void bind_workqueue(struct workqueue_struct *wq)
+{
+ struct work_struct *work;
+
+ work = kzalloc(sizeof(struct work_struct), GFP_KERNEL);
+ INIT_WORK(work, bind_to_cpu0);
+ queue_work(wq, work);
+}
+
acpi_status acpi_os_initialize1(void)
{
+ /*
+ * On some machines, a software-initiated SMI causes corruption unless
+ * the SMI runs on CPU 0. An SMI can be initiated by any AML, but
+ * typically it's done in GPE-related methods that are run via
+ * workqueues, so we can avoid the known corruption cases by binding
+ * the workqueues to CPU 0.
+ */
kacpid_wq = create_singlethread_workqueue("kacpid");
+ bind_workqueue(kacpid_wq);
kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
+ bind_workqueue(kacpi_notify_wq);
+ kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug");
+ bind_workqueue(kacpi_hotplug_wq);
BUG_ON(!kacpid_wq);
BUG_ON(!kacpi_notify_wq);
+ BUG_ON(!kacpi_hotplug_wq);
return AE_OK;
}
destroy_workqueue(kacpid_wq);
destroy_workqueue(kacpi_notify_wq);
+ destroy_workqueue(kacpi_hotplug_wq);
return AE_OK;
}
}
EXPORT_SYMBOL_GPL(acpi_os_map_memory);
-void acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
+void __ref acpi_os_unmap_memory(void __iomem *virt, acpi_size size)
{
- if (acpi_gbl_permanent_mmap) {
+ if (acpi_gbl_permanent_mmap)
iounmap(virt);
- }
+ else
+ __acpi_unmap_table(virt, size);
}
EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
+void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size)
+{
+ if (!acpi_gbl_permanent_mmap)
+ __acpi_unmap_table(virt, size);
+}
+
#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_os_get_physical_address(void *virt, acpi_physical_address * phys)
if (handled) {
acpi_irq_handled++;
return IRQ_HANDLED;
- } else
+ } else {
+ acpi_irq_not_handled++;
return IRQ_NONE;
+ }
}
acpi_status
acpi_status status = AE_OK;
struct acpi_os_dpc *dpc;
struct workqueue_struct *queue;
+ work_func_t func;
int ret;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Scheduling function [%p(%p)] for deferred execution.\n",
dpc->function = function;
dpc->context = context;
- if (!hp) {
- INIT_WORK(&dpc->work, acpi_os_execute_deferred);
- queue = (type == OSL_NOTIFY_HANDLER) ?
- kacpi_notify_wq : kacpid_wq;
- ret = queue_work(queue, &dpc->work);
- } else {
- INIT_WORK(&dpc->work, acpi_os_execute_hp_deferred);
- ret = schedule_work(&dpc->work);
- }
+ /*
+ * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq
+ * because the hotplug code may call driver .remove() functions,
+ * which invoke flush_scheduled_work/acpi_os_wait_events_complete
+ * to flush these workqueues.
+ */
+ queue = hp ? kacpi_hotplug_wq :
+ (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq);
+ func = hp ? acpi_os_execute_hp_deferred : acpi_os_execute_deferred;
+ INIT_WORK(&dpc->work, func);
+ ret = queue_work(queue, &dpc->work);
if (!ret) {
printk(KERN_ERR PREFIX
* in arbitrary AML code and can interfere with legacy drivers.
* acpi_enforce_resources= can be set to:
*
- * - strict (2)
+ * - strict (default) (2)
* -> further driver trying to access the resources will not load
- * - lax (default) (1)
+ * - lax (1)
* -> further driver trying to access the resources will load, but you
* get a system message that something might go wrong...
*
#define ENFORCE_RESOURCES_LAX 1
#define ENFORCE_RESOURCES_NO 0
-static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_LAX;
+static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT;
static int __init acpi_enforce_resources_setup(char *str)
{
return AE_SUPPORT;
}
-#ifdef CONFIG_X86
-
-struct aml_port_desc {
- uint start;
- uint end;
- char* name;
- char warned;
-};
-
-static struct aml_port_desc aml_invalid_port_list[] = {
- {0x20, 0x21, "PIC0", 0},
- {0xA0, 0xA1, "PIC1", 0},
- {0x4D0, 0x4D1, "ELCR", 0}
-};
-
-/*
- * valid_aml_io_address()
- *
- * if valid, return true
- * else invalid, warn once, return false
- */
-static bool valid_aml_io_address(uint address, uint length)
-{
- int i;
- int entries = sizeof(aml_invalid_port_list) / sizeof(struct aml_port_desc);
-
- for (i = 0; i < entries; ++i) {
- if ((address >= aml_invalid_port_list[i].start &&
- address <= aml_invalid_port_list[i].end) ||
- (address + length >= aml_invalid_port_list[i].start &&
- address + length <= aml_invalid_port_list[i].end))
- {
- if (!aml_invalid_port_list[i].warned)
- {
- printk(KERN_ERR "ACPI: Denied BIOS AML access"
- " to invalid port 0x%x+0x%x (%s)\n",
- address, length,
- aml_invalid_port_list[i].name);
- aml_invalid_port_list[i].warned = 1;
- }
- return false; /* invalid */
- }
- }
- return true; /* valid */
-}
-#else
-static inline bool valid_aml_io_address(uint address, uint length) { return true; }
-#endif
/******************************************************************************
*
* FUNCTION: acpi_os_validate_address
switch (space_id) {
case ACPI_ADR_SPACE_SYSTEM_IO:
- if (!valid_aml_io_address(address, length))
- return AE_AML_ILLEGAL_ADDRESS;
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
/* Only interference checks against SystemIO and SytemMemory
are needed */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff