ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
ttm_vt_unlock(&dev_priv->fbdev_master.lock);
- if (dev_priv->enable_fb)
- vmw_fb_on(dev_priv);
+ vmw_fb_refresh(dev_priv);
}
/**
switch (val) {
case PM_HIBERNATION_PREPARE:
- if (dev_priv->enable_fb)
- vmw_fb_off(dev_priv);
- ttm_suspend_lock(&dev_priv->reservation_sem);
-
/*
- * This empties VRAM and unbinds all GMR bindings.
- * Buffer contents is moved to swappable memory.
+ * Take the reservation sem in write mode, which will make sure
+ * there are no other processes holding a buffer object
+ * reservation, meaning we should be able to evict all buffer
+ * objects if needed.
+ * Once user-space processes have been frozen, we can release
+ * the lock again.
*/
- vmw_execbuf_release_pinned_bo(dev_priv);
- vmw_resource_evict_all(dev_priv);
- vmw_release_device_early(dev_priv);
- ttm_bo_swapout_all(&dev_priv->bdev);
- vmw_fence_fifo_down(dev_priv->fman);
+ ttm_suspend_lock(&dev_priv->reservation_sem);
+ dev_priv->suspend_locked = true;
break;
case PM_POST_HIBERNATION:
case PM_POST_RESTORE:
- vmw_fence_fifo_up(dev_priv->fman);
- ttm_suspend_unlock(&dev_priv->reservation_sem);
- if (dev_priv->enable_fb)
- vmw_fb_on(dev_priv);
- break;
- case PM_RESTORE_PREPARE:
+ if (READ_ONCE(dev_priv->suspend_locked)) {
+ dev_priv->suspend_locked = false;
+ ttm_suspend_unlock(&dev_priv->reservation_sem);
+ }
break;
default:
break;
struct pci_dev *pdev = to_pci_dev(kdev);
struct drm_device *dev = pci_get_drvdata(pdev);
struct vmw_private *dev_priv = vmw_priv(dev);
+ int ret;
+ /*
+ * Unlock for vmw_kms_suspend.
+ * No user-space processes should be running now.
+ */
+ ttm_suspend_unlock(&dev_priv->reservation_sem);
+ ret = vmw_kms_suspend(dev_priv->dev);
+ if (ret) {
+ ttm_suspend_lock(&dev_priv->reservation_sem);
+ DRM_ERROR("Failed to freeze modesetting.\n");
+ return ret;
+ }
dev_priv->suspended = true;
if (dev_priv->enable_fb)
- vmw_fifo_resource_dec(dev_priv);
+ vmw_fb_off(dev_priv);
+ ttm_suspend_lock(&dev_priv->reservation_sem);
+ vmw_execbuf_release_pinned_bo(dev_priv);
+ vmw_resource_evict_all(dev_priv);
+ vmw_release_device_early(dev_priv);
+ ttm_bo_swapout_all(&dev_priv->bdev);
+ if (dev_priv->enable_fb)
+ vmw_fifo_resource_dec(dev_priv);
if (atomic_read(&dev_priv->num_fifo_resources) != 0) {
DRM_ERROR("Can't hibernate while 3D resources are active.\n");
if (dev_priv->enable_fb)
vmw_fifo_resource_inc(dev_priv);
WARN_ON(vmw_request_device_late(dev_priv));
+ dev_priv->suspend_locked = false;
+ ttm_suspend_unlock(&dev_priv->reservation_sem);
+ if (dev_priv->suspend_state)
+ vmw_kms_resume(dev);
+ if (dev_priv->enable_fb)
+ vmw_fb_on(dev_priv);
dev_priv->suspended = false;
+ vmw_fb_refresh(dev_priv);
return -EBUSY;
}
- if (dev_priv->enable_fb)
- __vmw_svga_disable(dev_priv);
+ vmw_fence_fifo_down(dev_priv->fman);
+ __vmw_svga_disable(dev_priv);
vmw_release_device_late(dev_priv);
-
return 0;
}
if (dev_priv->enable_fb)
__vmw_svga_enable(dev_priv);
+ vmw_fence_fifo_up(dev_priv->fman);
+ dev_priv->suspend_locked = false;
+ ttm_suspend_unlock(&dev_priv->reservation_sem);
+ if (dev_priv->suspend_state)
+ vmw_kms_resume(dev_priv->dev);
+
+ if (dev_priv->enable_fb)
+ vmw_fb_on(dev_priv);
+
dev_priv->suspended = false;
+ vmw_fb_refresh(dev_priv);
return 0;
}
struct vmw_framebuffer *implicit_fb;
struct mutex global_kms_state_mutex;
spinlock_t cursor_lock;
+ struct drm_atomic_state *suspend_state;
/*
* Context and surface management.
struct notifier_block pm_nb;
bool suspended;
bool refuse_hibernation;
+ bool suspend_locked;
struct mutex release_mutex;
atomic_t num_fifo_resources;
int vmw_fb_close(struct vmw_private *dev_priv);
int vmw_fb_off(struct vmw_private *vmw_priv);
int vmw_fb_on(struct vmw_private *vmw_priv);
+void vmw_fb_refresh(struct vmw_private *vmw_priv);
/**
* Kernel modesetting - vmwgfx_kms.c
int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv);
+int vmw_kms_suspend(struct drm_device *dev);
+int vmw_kms_resume(struct drm_device *dev);
int vmw_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
return 0;
}
-/*
- * Dirty code
+/**
+ * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
+ *
+ * @work: The struct work_struct associated with this task.
+ *
+ * This function flushes the dirty regions of the vmalloc framebuffer to the
+ * kms framebuffer, and if the kms framebuffer is visible, also updated the
+ * corresponding displays. Note that this function runs even if the kms
+ * framebuffer is not bound to a crtc and thus not visible, but it's turned
+ * off during hibernation using the par->dirty.active bool.
*/
-
static void vmw_fb_dirty_flush(struct work_struct *work)
{
struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
flush_delayed_work(&info->deferred_work);
flush_delayed_work(&par->local_work);
- mutex_lock(&par->bo_mutex);
- drm_modeset_lock_all(vmw_priv->dev);
- (void) vmw_fb_kms_detach(par, true, false);
- drm_modeset_unlock_all(vmw_priv->dev);
- mutex_unlock(&par->bo_mutex);
-
return 0;
}
info = vmw_priv->fb_info;
par = info->par;
- vmw_fb_set_par(info);
spin_lock_irqsave(&par->dirty.lock, flags);
par->dirty.active = true;
spin_unlock_irqrestore(&par->dirty.lock, flags);
return 0;
}
+
+/**
+ * vmw_fb_refresh - Refresh fb display
+ *
+ * @vmw_priv: Pointer to device private
+ *
+ * Call into kms to show the fbdev display(s).
+ */
+void vmw_fb_refresh(struct vmw_private *vmw_priv)
+{
+ if (!vmw_priv->fb_info)
+ return;
+
+ vmw_fb_set_par(vmw_priv->fb_info);
+}
return drm_atomic_helper_set_config(set, ctx);
}
+
+
+/**
+ * vmw_kms_suspend - Save modesetting state and turn modesetting off.
+ *
+ * @dev: Pointer to the drm device
+ * Return: 0 on success. Negative error code on failure.
+ */
+int vmw_kms_suspend(struct drm_device *dev)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+
+ dev_priv->suspend_state = drm_atomic_helper_suspend(dev);
+ if (IS_ERR(dev_priv->suspend_state)) {
+ int ret = PTR_ERR(dev_priv->suspend_state);
+
+ DRM_ERROR("Failed kms suspend: %d\n", ret);
+ dev_priv->suspend_state = NULL;
+
+ return ret;
+ }
+
+ return 0;
+}
+
+
+/**
+ * vmw_kms_resume - Re-enable modesetting and restore state
+ *
+ * @dev: Pointer to the drm device
+ * Return: 0 on success. Negative error code on failure.
+ *
+ * State is resumed from a previous vmw_kms_suspend(). It's illegal
+ * to call this function without a previous vmw_kms_suspend().
+ */
+int vmw_kms_resume(struct drm_device *dev)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ int ret;
+
+ if (WARN_ON(!dev_priv->suspend_state))
+ return 0;
+
+ ret = drm_atomic_helper_resume(dev, dev_priv->suspend_state);
+ dev_priv->suspend_state = NULL;
+
+ return ret;
+}
projects / openwrt / staging / blogic.git / commitdiff