drm/vmwgfx: Implement basic pm operations.
Currently we really only support S3, since the device doesn't support
saving of the 3D state.
On S3/S4, move all buffer objects to swappable memory and take down
GMR bindings. We need to do that from a PM notifier since we can't
do persistant memory allocations from the standard PM callbacks.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 70e4f5f..dedd121 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -147,6 +147,8 @@
static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
static void vmw_master_init(struct vmw_master *);
+static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
+ void *ptr);
static void vmw_print_capabilities(uint32_t capabilities)
{
@@ -352,6 +354,9 @@
vmw_fb_init(dev_priv);
}
+ dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
+ register_pm_notifier(&dev_priv->pm_nb);
+
return 0;
out_no_device:
@@ -386,6 +391,8 @@
DRM_INFO(VMWGFX_DRIVER_NAME " unload.\n");
+ unregister_pm_notifier(&dev_priv->pm_nb);
+
if (!dev_priv->stealth) {
vmw_fb_close(dev_priv);
vmw_kms_close(dev_priv);
@@ -651,6 +658,57 @@
drm_put_dev(dev);
}
+static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
+ void *ptr)
+{
+ struct vmw_private *dev_priv =
+ container_of(nb, struct vmw_private, pm_nb);
+ struct vmw_master *vmaster = dev_priv->active_master;
+
+ switch (val) {
+ case PM_HIBERNATION_PREPARE:
+ case PM_SUSPEND_PREPARE:
+ ttm_suspend_lock(&vmaster->lock);
+
+ /**
+ * This empties VRAM and unbinds all GMR bindings.
+ * Buffer contents is moved to swappable memory.
+ */
+ ttm_bo_swapout_all(&dev_priv->bdev);
+ break;
+ case PM_POST_HIBERNATION:
+ case PM_POST_SUSPEND:
+ ttm_suspend_unlock(&vmaster->lock);
+ break;
+ case PM_RESTORE_PREPARE:
+ break;
+ case PM_POST_RESTORE:
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+/**
+ * These might not be needed with the virtual SVGA device.
+ */
+
+int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, PCI_D3hot);
+ return 0;
+}
+
+int vmw_pci_resume(struct pci_dev *pdev)
+{
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ return pci_enable_device(pdev);
+}
+
static struct drm_driver driver = {
.driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
DRIVER_MODESET,
@@ -690,7 +748,9 @@
.name = VMWGFX_DRIVER_NAME,
.id_table = vmw_pci_id_list,
.probe = vmw_probe,
- .remove = vmw_remove
+ .remove = vmw_remove,
+ .suspend = vmw_pci_suspend,
+ .resume = vmw_pci_resume
},
.name = VMWGFX_DRIVER_NAME,
.desc = VMWGFX_DRIVER_DESC,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 4c9d6b2..7532b9b 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -32,6 +32,7 @@
#include "drmP.h"
#include "vmwgfx_drm.h"
#include "drm_hashtab.h"
+#include "linux/suspend.h"
#include "ttm/ttm_bo_driver.h"
#include "ttm/ttm_object.h"
#include "ttm/ttm_lock.h"
@@ -258,6 +259,7 @@
struct vmw_master *active_master;
struct vmw_master fbdev_master;
+ struct notifier_block pm_nb;
};
static inline struct vmw_private *vmw_priv(struct drm_device *dev)