drm: DRM: fix memset size error
[linux-2.6.git] / drivers / acpi / processor_core.c
index 61d976e..235a51e 100644 (file)
@@ -44,6 +44,7 @@
 #include <linux/seq_file.h>
 #include <linux/dmi.h>
 #include <linux/moduleparam.h>
+#include <linux/cpuidle.h>
 
 #include <asm/io.h>
 #include <asm/system.h>
 
 #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);
@@ -87,15 +86,25 @@ static int acpi_processor_info_open_fs(struct inode *inode, struct file *file);
 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,
                },
 };
 
@@ -118,7 +127,6 @@ struct acpi_processor_errata errata __read_mostly;
 
 static int acpi_processor_errata_piix4(struct pci_dev *dev)
 {
-       u8 rev = 0;
        u8 value1 = 0;
        u8 value2 = 0;
 
@@ -130,9 +138,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
         * 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;
@@ -150,7 +156,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
                break;
        }
 
-       switch (rev) {
+       switch (dev->revision) {
 
        case 0:         /* PIIX4 A-step */
        case 1:         /* PIIX4 B-step */
@@ -416,12 +422,6 @@ static int map_lsapic_id(struct acpi_subtable_header *entry,
        return 0;
 }
 
-#ifdef CONFIG_IA64
-#define arch_cpu_to_apicid     ia64_cpu_to_sapicid
-#else
-#define arch_cpu_to_apicid     x86_cpu_to_apicid
-#endif
-
 static int map_madt_entry(u32 acpi_id)
 {
        unsigned long madt_end, entry;
@@ -495,7 +495,7 @@ static int get_cpu_id(acpi_handle handle, u32 acpi_id)
                return apic_id;
 
        for (i = 0; i < NR_CPUS; ++i) {
-               if (arch_cpu_to_apicid[i] == apic_id)
+               if (cpu_physical_id(i) == apic_id)
                        return i;
        }
        return -1;
@@ -695,13 +695,23 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
        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));
@@ -711,6 +721,25 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
        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;
@@ -780,7 +809,7 @@ static int is_processor_present(acpi_handle handle)
 
 
        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;
        }
@@ -974,6 +1003,7 @@ void acpi_processor_install_hotplug_notify(void)
                            ACPI_UINT32_MAX,
                            processor_walk_namespace_cb, &action, NULL);
 #endif
+       register_hotcpu_notifier(&acpi_cpu_notifier);
 }
 
 static
@@ -986,6 +1016,7 @@ void acpi_processor_uninstall_hotplug_notify(void)
                            ACPI_UINT32_MAX,
                            processor_walk_namespace_cb, &action, NULL);
 #endif
+       unregister_hotcpu_notifier(&acpi_cpu_notifier);
 }
 
 /*
@@ -1005,7 +1036,7 @@ static int __init acpi_processor_init(void)
 #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);
@@ -1013,11 +1044,13 @@ static int __init acpi_processor_init(void)
                return -ENOMEM;
        acpi_processor_dir->owner = THIS_MODULE;
 
+       result = cpuidle_register_driver(&acpi_idle_driver);
+       if (result < 0)
+               goto out_proc;
+
        result = acpi_bus_register_driver(&acpi_processor_driver);
-       if (result < 0) {
-               remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
-               return result;
-       }
+       if (result < 0)
+               goto out_cpuidle;
 
        acpi_processor_install_hotplug_notify();
 
@@ -1026,11 +1059,18 @@ static int __init acpi_processor_init(void)
        acpi_processor_ppc_init();
 
        return 0;
+
+out_cpuidle:
+       cpuidle_unregister_driver(&acpi_idle_driver);
+
+out_proc:
+       remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
+
+       return result;
 }
 
 static void __exit acpi_processor_exit(void)
 {
-
        acpi_processor_ppc_exit();
 
        acpi_thermal_cpufreq_exit();
@@ -1039,6 +1079,8 @@ static void __exit acpi_processor_exit(void)
 
        acpi_bus_unregister_driver(&acpi_processor_driver);
 
+       cpuidle_unregister_driver(&acpi_idle_driver);
+
        remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
 
        return;