drm: claim PCI device when running in modesetting mode.

Under kernel modesetting, we manage the device at all times, regardless
of VT switching and X servers, so the only decent thing to do is to
claim the PCI device.  In that case, we call the suspend/resume hooks
directly from the pci driver hooks instead of the current class device detour.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>

4 files changed, 122 insertions, 84 deletions

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 6394c2b67658..1441655388ab 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -252,15 +252,19 @@ int drm_lastclose(struct drm_device * dev)
 int drm_init(struct drm_driver *driver)
 {
 	struct pci_dev *pdev = NULL;
-	struct pci_device_id *pid;
+	const struct pci_device_id *pid;
 	int i;
 
 	DRM_DEBUG("\n");
 
 	INIT_LIST_HEAD(&driver->device_list);
 
+	if (driver->driver_features & DRIVER_MODESET)
+		return pci_register_driver(&driver->pci_driver);
+
+	/* If not using KMS, fall back to stealth mode manual scanning. */
 	for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
-		pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];
+		pid = &driver->pci_driver.id_table[i];
 
 		/* Loop around setting up a DRM device for each PCI device
 		 * matching our ID and device class.  If we had the internal
@@ -285,68 +289,17 @@ int drm_init(struct drm_driver *driver)
 
 EXPORT_SYMBOL(drm_init);
 
-/**
- * Called via cleanup_module() at module unload time.
- *
- * Cleans up all DRM device, calling drm_lastclose().
- *
- * \sa drm_init
- */
-static void drm_cleanup(struct drm_device * dev)
-{
-	struct drm_map_list *r_list, *list_temp;
-	DRM_DEBUG("\n");
-
-	if (!dev) {
-		DRM_ERROR("cleanup called no dev\n");
-		return;
-	}
-
-	drm_vblank_cleanup(dev);
-
-	drm_lastclose(dev);
-
-	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
-	    dev->agp && dev->agp->agp_mtrr >= 0) {
-		int retval;
-		retval = mtrr_del(dev->agp->agp_mtrr,
-				  dev->agp->agp_info.aper_base,
-				  dev->agp->agp_info.aper_size * 1024 * 1024);
-		DRM_DEBUG("mtrr_del=%d\n", retval);
-	}
-
-	if (dev->driver->unload)
-		dev->driver->unload(dev);
-
-	if (drm_core_has_AGP(dev) && dev->agp) {
-		drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
-		dev->agp = NULL;
-	}
-
-	drm_ht_remove(&dev->map_hash);
-	drm_ctxbitmap_cleanup(dev);
-
-	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
-		drm_rmmap(dev, r_list->map);
-
-	if (drm_core_check_feature(dev, DRIVER_MODESET))
-		drm_put_minor(&dev->control);
-
-	if (dev->driver->driver_features & DRIVER_GEM)
-		drm_gem_destroy(dev);
-
-	drm_put_minor(&dev->primary);
-	if (drm_put_dev(dev))
-		DRM_ERROR("Cannot unload module\n");
-}
-
 void drm_exit(struct drm_driver *driver)
 {
 	struct drm_device *dev, *tmp;
 	DRM_DEBUG("\n");
 
-	list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item)
-		drm_cleanup(dev);
+	if (driver->driver_features & DRIVER_MODESET) {
+		pci_unregister_driver(&driver->pci_driver);
+	} else {
+		list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item)
+			drm_put_dev(dev);
+	}
 
 	DRM_INFO("Module unloaded\n");
 }
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 7c8b15b22bf2..f51c685011ed 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -372,6 +372,7 @@ int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
 	}
 
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		pci_set_drvdata(pdev, dev);
 		ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
 		if (ret)
 			goto err_g2;
@@ -409,29 +410,7 @@ err_g1:
 	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
 	return ret;
 }
-
-/**
- * Put a device minor number.
- *
- * \param dev device data structure
- * \return always zero
- *
- * Cleans up the proc resources. If it is the last minor then release the foreign
- * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
- * unregisters the character device.
- */
-int drm_put_dev(struct drm_device * dev)
-{
-	DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
-
-	if (dev->devname) {
-		drm_free(dev->devname, strlen(dev->devname) + 1,
-			 DRM_MEM_DRIVER);
-		dev->devname = NULL;
-	}
-	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
-	return 0;
-}
+EXPORT_SYMBOL(drm_get_dev);
 
 /**
  * Put a secondary minor number.
@@ -459,3 +438,67 @@ int drm_put_minor(struct drm_minor **minor_p)
 	*minor_p = NULL;
 	return 0;
 }
+
+/**
+ * Called via drm_exit() at module unload time or when pci device is
+ * unplugged.
+ *
+ * Cleans up all DRM device, calling drm_lastclose().
+ *
+ * \sa drm_init
+ */
+void drm_put_dev(struct drm_device *dev)
+{
+	struct drm_driver *driver = dev->driver;
+	struct drm_map_list *r_list, *list_temp;
+
+	DRM_DEBUG("\n");
+
+	if (!dev) {
+		DRM_ERROR("cleanup called no dev\n");
+		return;
+	}
+
+	drm_vblank_cleanup(dev);
+
+	drm_lastclose(dev);
+
+	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
+	    dev->agp && dev->agp->agp_mtrr >= 0) {
+		int retval;
+		retval = mtrr_del(dev->agp->agp_mtrr,
+				  dev->agp->agp_info.aper_base,
+				  dev->agp->agp_info.aper_size * 1024 * 1024);
+		DRM_DEBUG("mtrr_del=%d\n", retval);
+	}
+
+	if (dev->driver->unload)
+		dev->driver->unload(dev);
+
+	if (drm_core_has_AGP(dev) && dev->agp) {
+		drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
+		dev->agp = NULL;
+	}
+
+	drm_ht_remove(&dev->map_hash);
+	drm_ctxbitmap_cleanup(dev);
+
+	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
+		drm_rmmap(dev, r_list->map);
+
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		drm_put_minor(&dev->control);
+
+	if (driver->driver_features & DRIVER_GEM)
+		drm_gem_destroy(dev);
+
+	drm_put_minor(&dev->primary);
+
+	if (dev->devname) {
+		drm_free(dev->devname, strlen(dev->devname) + 1,
+			 DRM_MEM_DRIVER);
+		dev->devname = NULL;
+	}
+	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
+}
+EXPORT_SYMBOL(drm_put_dev);
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 5aa6780652aa..480546b542fe 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -35,7 +35,9 @@ static int drm_sysfs_suspend(struct device *dev, pm_message_t state)
 	struct drm_minor *drm_minor = to_drm_minor(dev);
 	struct drm_device *drm_dev = drm_minor->dev;
 
-	if (drm_minor->type == DRM_MINOR_LEGACY && drm_dev->driver->suspend)
+	if (drm_minor->type == DRM_MINOR_LEGACY &&
+	    !drm_core_check_feature(drm_dev, DRIVER_MODESET) &&
+	    drm_dev->driver->suspend)
 		return drm_dev->driver->suspend(drm_dev, state);
 
 	return 0;
@@ -53,7 +55,9 @@ static int drm_sysfs_resume(struct device *dev)
 	struct drm_minor *drm_minor = to_drm_minor(dev);
 	struct drm_device *drm_dev = drm_minor->dev;
 
-	if (drm_minor->type == DRM_MINOR_LEGACY && drm_dev->driver->resume)
+	if (drm_minor->type == DRM_MINOR_LEGACY &&
+	    !drm_core_check_feature(drm_dev, DRIVER_MODESET) &&
+	    drm_dev->driver->resume)
 		return drm_dev->driver->resume(drm_dev);
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b293ef0bae71..d10ec9e5033c 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -42,6 +42,8 @@ module_param_named(modeset, i915_modeset, int, 0400);
 unsigned int i915_fbpercrtc = 0;
 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
 
+static struct drm_driver driver;
+
 static struct pci_device_id pciidlist[] = {
 	i915_PCI_IDS
 };
@@ -117,6 +119,36 @@ static int i915_resume(struct drm_device *dev)
 	return ret;
 }
 
+static int __devinit
+i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	return drm_get_dev(pdev, ent, &driver);
+}
+
+static void
+i915_pci_remove(struct pci_dev *pdev)
+{
+	struct drm_device *dev = pci_get_drvdata(pdev);
+
+	drm_put_dev(dev);
+}
+
+static int
+i915_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct drm_device *dev = pci_get_drvdata(pdev);
+
+	return i915_suspend(dev, state);
+}
+
+static int
+i915_pci_resume(struct pci_dev *pdev)
+{
+	struct drm_device *dev = pci_get_drvdata(pdev);
+
+	return i915_resume(dev);
+}
+
 static struct vm_operations_struct i915_gem_vm_ops = {
 	.fault = i915_gem_fault,
 	.open = drm_gem_vm_open,
@@ -172,6 +204,12 @@ static struct drm_driver driver = {
 	.pci_driver = {
 		 .name = DRIVER_NAME,
 		 .id_table = pciidlist,
+		 .probe = i915_pci_probe,
+		 .remove = i915_pci_remove,
+#ifdef CONFIG_PM
+		 .resume = i915_pci_resume,
+		 .suspend = i915_pci_suspend,
+#endif
 	},
 
 	.name = DRIVER_NAME,