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drm/vmwgfx: Implement basic pm operations.

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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>
This commit is contained in:
Thomas Hellstrom 2010-01-13 22:28:43 +01:00 committed by Dave Airlie
parent e99e1e7893
commit d9f36a0051
2 changed files with 63 additions and 1 deletions
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62
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
View File

@ -147,6 +147,8 @@ static char *vmw_devname = "vmwgfx";
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 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
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 @@ static int vmw_driver_unload(struct drm_device *dev)
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 @@ static void vmw_remove(struct pci_dev *pdev)
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 @@ static struct drm_driver driver = {
.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,

2
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
View File

@ -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_private {
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)