12  * Copyright (c) 2009-2010, Code Aurora Forum.
256 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
257 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
269 	if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) ||	\
270 	    _file_priv->master->lock.file_priv != _file_priv)	{		\
272 			   __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
273 			   _file_priv->master->lock.file_priv, _file_priv);	\
274 		return -EINVAL;							\
328 	int order;		       /**< log-base-2(total) */
333 	struct drm_buf *next;	       /**< Kernel-only: used for free list */
349 	void *dev_private;		 /**< Per-buffer private storage */
399 /* initial implementaton using a linked list - todo hashtab */
420 				      N.B. not always minor->master */
485 	unsigned long mode;		/**< AGP mode */  member
495  * Scatter-gather memory.
512 #define DRM_MAP_HANDLE_SHIFT	(sizeof(void *) * 8 - DRM_MAP_HANDLE_BITS)
519 	void *handle;		 /**< User-space: "Handle" to pass to mmap() */
520 				 /**< Kernel-space: kernel-virtual address */
567 	struct drm_dma_handle *dmah; /* handle for ATI PCIGART table FIXME */
642 /* per-master structure */
667 /* Size of ringbuffer for vblank timestamps. Just double-buffer
716 	 * get_vblank_counter - get raw hardware vblank counter
735 	 * enable_vblank - enable vblank interrupt events
740 	 * a hardware vblank counter, this routine should be a no-op, since
750 	 * disable_vblank - disable vblank interrupt events
755 	 * a hardware vblank counter, this routine should be a no-op, since
785 	 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
823 	 *              for gpu-specific vblank irq quirks if flag is set.
826 	 * Zero if timestamping isn't supported in current display mode or a
858 	 * Driver-specific constructor for drm_gem_objects, to set up
859 	 * obj->driver_private.
870 	/* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
873 	/* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
876 	/* export GEM -> dmabuf */
879 	/* import dmabuf -> GEM */
944 /* mode specified on the command line */
984 	int buf_use;			/**< Buffers in use -- cannot alloc */
1047 	u32 *last_vblank;               /* protected by dev->vbl_lock, used */
1051 	int *vblank_inmodeset;          /* Display driver is setting mode */
1086         struct drm_mode_config mode_config;	/**< Current mode config */
1098 	struct mtx	  dma_lock;	/* protects dev->dma */
1139 	return ((dev->driver->driver_features & feature) ? 1 : 0);  in drm_core_check_feature()
1144 	return dev->driver->bus->get_irq(dev);  in drm_dev_to_irq()
1342 					  struct drm_cmdline_mode *mode);
1414 			       /* ATI PCIGART support (ati_pcigart.h) */
1447 	KASSERT(obj->refcount > 0, ("Dangling obj %p", obj));  in drm_gem_object_reference()
1448 	refcount_acquire(&obj->refcount);  in drm_gem_object_reference()
1457 	if (refcount_release(&obj->refcount))  in drm_gem_object_unreference()
1465 		struct drm_device *dev = obj->dev;  in drm_gem_object_unreference_unlocked()
1481 	atomic_inc(&obj->handle_count);  in drm_gem_object_handle_reference()
1490 	if (atomic_read(&obj->handle_count) == 0)  in drm_gem_object_handle_unreference()
1497 	if (atomic_dec_and_test(&obj->handle_count))  in drm_gem_object_handle_unreference()
1508 	if (atomic_read(&obj->handle_count) == 0)  in drm_gem_object_handle_unreference_unlocked()
1517 	if (atomic_dec_and_test(&obj->handle_count))  in drm_gem_object_handle_unreference_unlocked()
1545 	list_for_each_entry(_entry, &dev->maplist, head)  in drm_core_findmap()
1546 	    if (_entry->user_token == token)  in drm_core_findmap()
1547 		return _entry->map;  in drm_core_findmap()
1582 /* FreeBSD specific -- should be moved to drm_os_freebsd.h */
1585 #define	DRM_GEM_MAPPING_KEY	(2ULL << 62) /* Non-canonical address form */
1616     (sx_sleep((chan), &(dev)->dev_struct_lock, (flags), (msg), (timeout)))
1618 #define	DRM_LOCK_ASSERT(dev)	sx_assert(&(dev)->dev_struct_lock, SA_XLOCKED)
1619 #define	DRM_UNLOCK_ASSERT(dev)	sx_assert(&(dev)->dev_struct_lock, SA_UNLOCKED)
1648 	(_map) = (_dev)->context_sareas[_ctx];		\
1651 /* Returns -errno to shared code */
1655 	mtx_lock(&dev->irq_lock);				\
1657 	    ret = -mtx_sleep(&(queue), &dev->irq_lock, 		\
1659 	    if (ret == -ERESTART)				\
1660 	        ret = -ERESTARTSYS;				\
1661 	mtx_unlock(&dev->irq_lock);				\
1688 	u32 last;			/* protected by dev->vbl_lock, used */
1692 	int inmodeset;			/* Display driver is setting mode */
1696 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1)
1804 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1831 	return -ENODEV;  in drm_bind_agp()
1836 	return -ENODEV;  in drm_unbind_agp()
1859 	return -ENODEV;  in drm_agp_acquire()
1865 	return -ENODEV;  in drm_agp_acquire_ioctl()
1870 	return -ENODEV;  in drm_agp_release()
1876 	return -ENODEV;  in drm_agp_release_ioctl()
1880 				 struct drm_agp_mode mode)  in drm_agp_enable()  argument
1882 	return -ENODEV;  in drm_agp_enable()
1888 	return -ENODEV;  in drm_agp_enable_ioctl()
1894 	return -ENODEV;  in drm_agp_info()
1900 	return -ENODEV;  in drm_agp_info_ioctl()
1906 	return -ENODEV;  in drm_agp_alloc()
1912 	return -ENODEV;  in drm_agp_alloc_ioctl()
1918 	return -ENODEV;  in drm_agp_free()
1924 	return -ENODEV;  in drm_agp_free_ioctl()
1930 	return -ENODEV;  in drm_agp_unbind()
1936 	return -ENODEV;  in drm_agp_unbind_ioctl()
1942 	return -ENODEV;  in drm_agp_bind()
1948 	return -ENODEV;  in drm_agp_bind_ioctl()