Commit 1bb72532 authored by David Herrmann's avatar David Herrmann Committed by Dave Airlie
Browse files

drm: add drm_dev_alloc() helper 



Instead of managing device allocation+initialization in each bus-driver,
we should do that in a central place. drm_fill_in_dev() already does most
of it, but also requires the global drm lock for partial AGP device
registration.

Split both apart so we have a clean device initialization/allocation
phase, and a registration phase.

Signed-off-by: default avatarDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 16eb5f43

drivers/gpu/drm/drm_pci.c

+1 −3
Original line number Diff line number Diff line
@@ -322,7 +322,7 @@ int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, 


	DRM_DEBUG("\n");



	dev = kzalloc(sizeof(*dev), GFP_KERNEL);

	dev = drm_dev_alloc(driver, &pdev->dev);

	if (!dev)

		return -ENOMEM;
@@ -331,8 +331,6 @@ int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, 
		goto err_g1;



	dev->pdev = pdev;

	dev->dev = &pdev->dev;



	dev->pci_device = pdev->device;

	dev->pci_vendor = pdev->vendor;

drivers/gpu/drm/drm_platform.c

+1 −2
Original line number Diff line number Diff line
@@ -47,12 +47,11 @@ static int drm_get_platform_dev(struct platform_device *platdev, 


	DRM_DEBUG("\n");



	dev = kzalloc(sizeof(*dev), GFP_KERNEL);

	dev = drm_dev_alloc(driver, &platdev->dev);

	if (!dev)

		return -ENOMEM;



	dev->platformdev = platdev;

	dev->dev = &platdev->dev;



	mutex_lock(&drm_global_mutex);

drivers/gpu/drm/drm_stub.c

+74 −47
Original line number Diff line number Diff line
@@ -260,60 +260,15 @@ int drm_fill_in_dev(struct drm_device *dev, 
{

	int retcode;



	INIT_LIST_HEAD(&dev->filelist);

	INIT_LIST_HEAD(&dev->ctxlist);

	INIT_LIST_HEAD(&dev->vmalist);

	INIT_LIST_HEAD(&dev->maplist);

	INIT_LIST_HEAD(&dev->vblank_event_list);



	spin_lock_init(&dev->count_lock);

	spin_lock_init(&dev->event_lock);

	mutex_init(&dev->struct_mutex);

	mutex_init(&dev->ctxlist_mutex);



	if (drm_ht_create(&dev->map_hash, 12)) {

		return -ENOMEM;

	}



	/* the DRM has 6 basic counters */

	dev->counters = 6;

	dev->types[0] = _DRM_STAT_LOCK;

	dev->types[1] = _DRM_STAT_OPENS;

	dev->types[2] = _DRM_STAT_CLOSES;

	dev->types[3] = _DRM_STAT_IOCTLS;

	dev->types[4] = _DRM_STAT_LOCKS;

	dev->types[5] = _DRM_STAT_UNLOCKS;



	dev->driver = driver;



	if (dev->driver->bus->agp_init) {

		retcode = dev->driver->bus->agp_init(dev);

		if (retcode)

			goto error_out_unreg;

	}







	retcode = drm_ctxbitmap_init(dev);

	if (retcode) {

		DRM_ERROR("Cannot allocate memory for context bitmap.\n");

		goto error_out_unreg;

	}



	if (driver->driver_features & DRIVER_GEM) {

		retcode = drm_gem_init(dev);

		if (retcode) {

			DRM_ERROR("Cannot initialize graphics execution "

				  "manager (GEM)\n");

			goto error_out_unreg;

			drm_lastclose(dev);

			return retcode;

		}

	}



	return 0;



      error_out_unreg:

	drm_lastclose(dev);

	return retcode;

}

EXPORT_SYMBOL(drm_fill_in_dev);
@@ -490,3 +445,75 @@ void drm_unplug_dev(struct drm_device *dev) 
	mutex_unlock(&drm_global_mutex);

}

EXPORT_SYMBOL(drm_unplug_dev);



/**

 * drm_dev_alloc - Allocate new drm device

 * @driver: DRM driver to allocate device for

 * @parent: Parent device object

 *

 * Allocate and initialize a new DRM device. No device registration is done.

 *

 * RETURNS:

 * Pointer to new DRM device, or NULL if out of memory.

 */

struct drm_device *drm_dev_alloc(struct drm_driver *driver,

				 struct device *parent)

{

	struct drm_device *dev;

	int ret;



	dev = kzalloc(sizeof(*dev), GFP_KERNEL);

	if (!dev)

		return NULL;



	dev->dev = parent;

	dev->driver = driver;



	INIT_LIST_HEAD(&dev->filelist);

	INIT_LIST_HEAD(&dev->ctxlist);

	INIT_LIST_HEAD(&dev->vmalist);

	INIT_LIST_HEAD(&dev->maplist);

	INIT_LIST_HEAD(&dev->vblank_event_list);



	spin_lock_init(&dev->count_lock);

	spin_lock_init(&dev->event_lock);

	mutex_init(&dev->struct_mutex);

	mutex_init(&dev->ctxlist_mutex);



	/* the DRM has 6 basic counters */

	dev->counters = 6;

	dev->types[0] = _DRM_STAT_LOCK;

	dev->types[1] = _DRM_STAT_OPENS;

	dev->types[2] = _DRM_STAT_CLOSES;

	dev->types[3] = _DRM_STAT_IOCTLS;

	dev->types[4] = _DRM_STAT_LOCKS;

	dev->types[5] = _DRM_STAT_UNLOCKS;



	if (drm_ht_create(&dev->map_hash, 12))

		goto err_free;



	ret = drm_ctxbitmap_init(dev);

	if (ret) {

		DRM_ERROR("Cannot allocate memory for context bitmap.\n");

		goto err_ht;

	}



	if (driver->driver_features & DRIVER_GEM) {

		ret = drm_gem_init(dev);

		if (ret) {

			DRM_ERROR("Cannot initialize graphics execution manager (GEM)\n");

			goto err_ctxbitmap;

		}

	}



	return dev;



err_ctxbitmap:

	drm_ctxbitmap_cleanup(dev);

err_ht:

	drm_ht_remove(&dev->map_hash);

err_free:

	kfree(dev);

	return NULL;

}

EXPORT_SYMBOL(drm_dev_alloc);

drivers/gpu/drm/drm_usb.c

+2 −5
Original line number Diff line number Diff line
@@ -7,18 +7,15 @@ int drm_get_usb_dev(struct usb_interface *interface, 
		    struct drm_driver *driver)

{

	struct drm_device *dev;

	struct usb_device *usbdev;

	int ret;



	DRM_DEBUG("\n");



	dev = kzalloc(sizeof(*dev), GFP_KERNEL);

	dev = drm_dev_alloc(driver, &interface->dev);

	if (!dev)

		return -ENOMEM;



	usbdev = interface_to_usbdev(interface);

	dev->usbdev = usbdev;

	dev->dev = &interface->dev;

	dev->usbdev = interface_to_usbdev(interface);



	mutex_lock(&drm_global_mutex);

include/drm/drmP.h

+2 −0
Original line number Diff line number Diff line
@@ -1643,6 +1643,8 @@ static __inline__ void drm_core_dropmap(struct drm_local_map *map) 
extern int drm_fill_in_dev(struct drm_device *dev,

			   const struct pci_device_id *ent,

			   struct drm_driver *driver);

struct drm_device *drm_dev_alloc(struct drm_driver *driver,

				 struct device *parent);

int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);

/*@}*/

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