#define ACPI_PROCESSOR_COMPONENT 0x01000000
#define ACPI_PROCESSOR_CLASS "processor"
-#define ACPI_PROCESSOR_DRIVER_NAME "ACPI Processor Driver"
#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
#define ACPI_PROCESSOR_FILE_INFO "info"
#define ACPI_PROCESSOR_FILE_THROTTLING "throttling"
#define ACPI_PROCESSOR_FILE_LIMIT "limit"
#define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80
#define ACPI_PROCESSOR_NOTIFY_POWER 0x81
+#define ACPI_PROCESSOR_NOTIFY_THROTTLING 0x82
#define ACPI_PROCESSOR_LIMIT_USER 0
#define ACPI_PROCESSOR_LIMIT_THERMAL 1
-#define ACPI_STA_PRESENT 0x00000001
-
#define _COMPONENT ACPI_PROCESSOR_COMPONENT
-ACPI_MODULE_NAME("acpi_processor")
+ACPI_MODULE_NAME("processor_core");
- MODULE_AUTHOR("Paul Diefenbaugh");
-MODULE_DESCRIPTION(ACPI_PROCESSOR_DRIVER_NAME);
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION("ACPI Processor Driver");
MODULE_LICENSE("GPL");
static int acpi_processor_add(struct acpi_device *device);
static void acpi_processor_notify(acpi_handle handle, u32 event, void *data);
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu);
static int acpi_processor_handle_eject(struct acpi_processor *pr);
+extern int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
+
+
+static const struct acpi_device_id processor_device_ids[] = {
+ {ACPI_PROCESSOR_HID, 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, processor_device_ids);
static struct acpi_driver acpi_processor_driver = {
- .name = ACPI_PROCESSOR_DRIVER_NAME,
+ .name = "processor",
.class = ACPI_PROCESSOR_CLASS,
- .ids = ACPI_PROCESSOR_HID,
+ .ids = processor_device_ids,
.ops = {
.add = acpi_processor_add,
.remove = acpi_processor_remove,
.start = acpi_processor_start,
+ .suspend = acpi_processor_suspend,
+ .resume = acpi_processor_resume,
},
};
static int acpi_processor_errata_piix4(struct pci_dev *dev)
{
- u8 rev = 0;
u8 value1 = 0;
u8 value2 = 0;
* Note that 'dev' references the PIIX4 ACPI Controller.
*/
- pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-
- switch (rev) {
+ switch (dev->revision) {
case 0:
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
break;
break;
}
- switch (rev) {
+ switch (dev->revision) {
case 0: /* PIIX4 A-step */
case 1: /* PIIX4 B-step */
/* Use the acpiid in MADT to map cpus in case of SMP */
#ifndef CONFIG_SMP
-#define convert_acpiid_to_cpu(acpi_id) (-1)
+static int get_cpu_id(acpi_handle handle, u32 acpi_id) {return -1;}
#else
static struct acpi_table_madt *madt;
if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
/* First check against id */
if (lsapic->processor_id == acpi_id) {
- *apic_id = lsapic->id;
+ *apic_id = (lsapic->id << 8) | lsapic->eid;
return 1;
/* Check against optional uid */
} else if (entry->length >= 16 &&
return apic_id;
}
-static int get_apic_id(acpi_handle handle, u32 acpi_id)
+static int get_cpu_id(acpi_handle handle, u32 acpi_id)
{
int i;
int apic_id = -1;
Driver Interface
-------------------------------------------------------------------------- */
-static int acpi_processor_get_info(struct acpi_processor *pr)
+static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
{
acpi_status status = 0;
union acpi_object object = { 0 };
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No bus mastering arbitration control\n"));
- /*
- * Evalute the processor object. Note that it is common on SMP to
- * have the first (boot) processor with a valid PBLK address while
- * all others have a NULL address.
- */
- status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
- if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX "Evaluating processor object\n");
- return -ENODEV;
- }
-
- /*
- * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
- * >>> 'acpi_get_processor_id(acpi_id, &id)' in arch/xxx/acpi.c
- */
- pr->acpi_id = object.processor.proc_id;
+ /* Check if it is a Device with HID and UID */
+ if (has_uid) {
+ unsigned long value;
+ status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
+ NULL, &value);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Evaluating processor _UID\n");
+ return -ENODEV;
+ }
+ pr->acpi_id = value;
+ } else {
+ /*
+ * Evalute the processor object. Note that it is common on SMP to
+ * have the first (boot) processor with a valid PBLK address while
+ * all others have a NULL address.
+ */
+ status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Evaluating processor object\n");
+ return -ENODEV;
+ }
- cpu_index = get_apic_id(pr->handle, pr->acpi_id);
+ /*
+ * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
+ * >>> 'acpi_get_processor_id(acpi_id, &id)' in arch/xxx/acpi.c
+ */
+ pr->acpi_id = object.processor.proc_id;
+ }
+ cpu_index = get_cpu_id(pr->handle, pr->acpi_id);
/* Handle UP system running SMP kernel, with no LAPIC in MADT */
if (!cpu0_initialized && (cpu_index == -1) &&
pr = acpi_driver_data(device);
- result = acpi_processor_get_info(pr);
+ result = acpi_processor_get_info(pr, device->flags.unique_id);
if (result) {
/* Processor is physically not present */
return 0;
switch (event) {
case ACPI_PROCESSOR_NOTIFY_PERFORMANCE:
acpi_processor_ppc_has_changed(pr);
- acpi_bus_generate_event(device, event,
+ acpi_bus_generate_proc_event(device, event,
pr->performance_platform_limit);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event,
+ pr->performance_platform_limit);
break;
case ACPI_PROCESSOR_NOTIFY_POWER:
acpi_processor_cst_has_changed(pr);
- acpi_bus_generate_event(device, event, 0);
+ acpi_bus_generate_proc_event(device, event, 0);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event, 0);
break;
+ case ACPI_PROCESSOR_NOTIFY_THROTTLING:
+ acpi_processor_tstate_has_changed(pr);
+ acpi_bus_generate_proc_event(device, event, 0);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event, 0);
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
return;
}
+static int acpi_cpu_soft_notify(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+ struct acpi_processor *pr = processors[cpu];
+
+ if (action == CPU_ONLINE && pr) {
+ acpi_processor_ppc_has_changed(pr);
+ acpi_processor_cst_has_changed(pr);
+ acpi_processor_tstate_has_changed(pr);
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block acpi_cpu_notifier =
+{
+ .notifier_call = acpi_cpu_soft_notify,
+};
+
static int acpi_processor_add(struct acpi_device *device)
{
struct acpi_processor *pr = NULL;
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
- if (ACPI_FAILURE(status) || !(sta & ACPI_STA_PRESENT)) {
+ if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) {
ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
return 0;
}
return -ENODEV;
if ((pr->id >= 0) && (pr->id < NR_CPUS)) {
- kobject_uevent(&(*device)->kobj, KOBJ_ONLINE);
+ kobject_uevent(&(*device)->dev.kobj, KOBJ_ONLINE);
}
return 0;
}
}
if (pr->id >= 0 && (pr->id < NR_CPUS)) {
- kobject_uevent(&device->kobj, KOBJ_OFFLINE);
+ kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
break;
}
result = acpi_processor_start(device);
if ((!result) && ((pr->id >= 0) && (pr->id < NR_CPUS))) {
- kobject_uevent(&device->kobj, KOBJ_ONLINE);
+ kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
} else {
printk(KERN_ERR PREFIX "Device [%s] failed to start\n",
acpi_device_bid(device));
}
if ((pr->id < NR_CPUS) && (cpu_present(pr->id)))
- kobject_uevent(&device->kobj, KOBJ_OFFLINE);
+ kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
ACPI_UINT32_MAX,
processor_walk_namespace_cb, &action, NULL);
#endif
+ register_hotcpu_notifier(&acpi_cpu_notifier);
}
static
ACPI_UINT32_MAX,
processor_walk_namespace_cb, &action, NULL);
#endif
+ unregister_hotcpu_notifier(&acpi_cpu_notifier);
}
/*
#ifdef CONFIG_SMP
if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,
(struct acpi_table_header **)&madt)))
- madt = 0;
+ madt = NULL;
#endif
acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff