Changeset 13924 in vbox for trunk/src/VBox

Timestamp:

Nov 6, 2008 3:50:56 PM (16 years ago)

Author:

vboxsync

Message:

vboxdrv: R0 suspend/resume notifier

File:

• trunk/src/VBox/HostDrivers/Support/linux/SUPDrv-linux.c (modified) (8 diffs)

trunk/src/VBox/HostDrivers/Support/linux/SUPDrv-linux.c

@@ -46 +46 @@
 #include <iprt/err.h>
 #include <iprt/mem.h>
+#include <iprt/power.h>
 #include <VBox/log.h>
 #include <iprt/mp.h>
@@ -61 +62 @@
 #  include <asm/nmi.h>
 # endif
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
+# include <linux/suspend.h>
 #endif
 
@@ -229 +233 @@
 static int      VBoxDrvLinuxIOCtlSlow(struct file *pFilp, unsigned int uCmd, unsigned long ulArg);
 static int      VBoxDrvLinuxErr2LinuxErr(int);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
+static int      VBoxDrvSuspendNotifier(struct notifier_block *pBlock, unsigned long uEvent, void *dummy);
+#endif
 
 
@@ -258 +265 @@
 #endif
 
-
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
+/** Suspend/resume notifier. */
+static struct notifier_block gSuspendNotifierBlock =
+{
+    .notifier_call = VBoxDrvSuspendNotifier,
+};
+#endif
 
 
@@ -556 +569 @@
             if (RT_SUCCESS(rc))
                 rc = supdrvInitDevExt(&g_DevExt);
-            if (!rc)
+            if (RT_SUCCESS(rc))
             {
-                printk(KERN_INFO DEVICE_NAME ": TSC mode is %s, kernel timer mode is "
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
+                /*
+                 * Register the suspend/resume notifier.
+                 */
+                rc = register_pm_notifier(&gSuspendNotifierBlock);
+                if (rc == 0)
+#endif
+                {
+                    printk(KERN_INFO DEVICE_NAME ": TSC mode is %s, kernel timer mode is "
 #ifdef VBOX_HRTIMER
-                       "'high-res'"
+                           "'high-res'"
 #else
-                       "'normal'"
-#endif
-                       ".\n",
-                       g_DevExt.pGip->u32Mode == SUPGIPMODE_SYNC_TSC ? "'synchronous'" : "'asynchronous'");
-                LogFlow(("VBoxDrv::ModuleInit returning %#x\n", rc));
-                printk(KERN_DEBUG DEVICE_NAME ": Successfully loaded version "
-                       VBOX_VERSION_STRING " (interface " xstr(SUPDRV_IOC_VERSION) ").\n");
-                return rc;
+                           "'normal'"
+#endif
+                           ".\n",
+                           g_DevExt.pGip->u32Mode == SUPGIPMODE_SYNC_TSC ? "'synchronous'" : "'asynchronous'");
+                    LogFlow(("VBoxDrv::ModuleInit returning %#x\n", rc));
+                    printk(KERN_DEBUG DEVICE_NAME ": Successfully loaded version "
+                            VBOX_VERSION_STRING " (interface " xstr(SUPDRV_IOC_VERSION) ").\n");
+                    return rc;
+                }
             }
 
@@ -605 +627 @@
     NOREF(rc);
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
+    /*
+     * Unregister the suspend/resume notifier.
+     */
+    unregister_pm_notifier(&gSuspendNotifierBlock);
+#endif
+
     /*
      * I Don't think it's possible to unload a driver which processes have
@@ -612 +641 @@
     rc = misc_deregister(&gMiscDevice);
     if (rc < 0)
-    {
         dprintf(("misc_deregister failed with rc=%#x\n", rc));
-    }
 #else  /* !CONFIG_VBOXDRV_AS_MISC */
 # ifdef CONFIG_DEVFS_FS
@@ -689 +716 @@
     return 0;
 }
+
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23)
+/**
+ * Suspend/resume callback.
+ *
+ * @param   pNotifier
+ * @param   uEvent      event type
+ * @param   dummy
+ */
+static int VBoxDrvSuspendNotifier(struct notifier_block *pBlock, unsigned long uEvent, void *dummy)
+{
+    switch (uEvent)
+    {
+        case PM_SUSPEND_PREPARE:
+        case PM_POST_SUSPEND:
+            RTPowerSignalEvent(uEvent == PM_SUSPEND_PREPARE ? RTPOWEREVENT_SUSPEND
+                                                            : RTPOWEREVENT_RESUME);
+            break;
+    }
+    return 0;
+}
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) */