1 /* SPDX-License-Identifier: GPL-2.0 */
40  * enum tb_security_level - Thunderbolt security level
58  * struct tb - main thunderbolt bus structure
67  * @index: Linux assigned domain number
69  * @nboot_acl: Number of boot ACLs the domain supports
94 	return (link - 1) / TB_LINKS_PER_PHY_PORT;  in tb_phy_port_from_link()
98  * struct tb_property_dir - XDomain property directory
120  * struct tb_property - XDomain property
171  * struct tb_xdomain - Cross-domain (XDomain) connection
195  * @uuid_retries: Number of times left @remote_uuid is requested before
198  * @properties_retries: Number of times left to read properties
201  * @properties_changed_retries: Number of times left to send properties
211  * non-standard properties but they need hold @lock when doing so
258 	mutex_lock(&tb->lock);  in tb_xdomain_find_by_uuid_locked()
260 	mutex_unlock(&tb->lock);  in tb_xdomain_find_by_uuid_locked()
270 	mutex_lock(&tb->lock);  in tb_xdomain_find_by_route_locked()
272 	mutex_unlock(&tb->lock);  in tb_xdomain_find_by_route_locked()
280 		get_device(&xd->dev);  in tb_xdomain_get()
287 		put_device(&xd->dev);  in tb_xdomain_put()
292 	return dev->type == &tb_xdomain_type;  in tb_is_xdomain()
311  * tb_protocol_handler - Protocol specific handler
339  * struct tb_service - Thunderbolt service
365 		get_device(&svc->dev);  in tb_service_get()
372 		put_device(&svc->dev);  in tb_service_put()
377 	return dev->type == &tb_service_type;  in tb_is_service()
388  * tb_service_driver - Thunderbolt service driver
414 	return dev_get_drvdata(&svc->dev);  in tb_service_get_drvdata()
419 	dev_set_drvdata(&svc->dev, data);  in tb_service_set_drvdata()
424 	return tb_to_xdomain(svc->dev.parent);  in tb_service_parent()
428  * struct tb_nhi - thunderbolt native host interface
436  * @msix_ida: Used to allocate MSI-X vectors for rings
440  *		    MSI-X is used.
441  * @hop_count: Number of rings (end point hops) supported by NHI.
457  * struct tb_ring - thunderbolt TX or RX ring associated with a NHI
459  *	  nhi->lock.
471  * @irq: MSI-X irq number if the ring uses MSI-X. %0 otherwise.
472  * @vector: MSI-X vector number the ring uses (only set if @irq is > 0)
474  * @sof_mask: Bit mask used to detect start of frame PDF
475  * @eof_mask: Bit mask used to detect end of frame PDF
505 /* Configure the ring to be in frame mode */
512  * enum ring_desc_flags - Flags for DMA ring descriptor
514  * %RING_DESC_CRC_ERROR: In frame mode CRC check failed for the frame (Rx only)
530  * struct ring_frame - For use with ring_rx/ring_tx
531  * @buffer_phy: DMA mapped address of the frame
532  * @callback: Callback called when the frame is finished (optional)
533  * @list: Frame is linked to a queue using this
534  * @size: Size of the frame in bytes (%0 means %4096)
535  * @flags: Flags for the frame (see &enum ring_desc_flags)
536  * @eof: End of frame protocol defined field
537  * @sof: Start of frame protocol defined field
561 int __tb_ring_enqueue(struct tb_ring *ring, struct ring_frame *frame);
564  * tb_ring_rx() - enqueue a frame on an RX ring
565  * @ring: Ring to enqueue the frame
566  * @frame: Frame to enqueue
568  * @frame->buffer, @frame->buffer_phy have to be set. The buffer must
571  * @frame->callback will be invoked with @frame->size, @frame->flags,
572  * @frame->eof, @frame->sof set once the frame has been received.
575  * @frame->callback will be called with canceled set to true.
577  * Return: Returns %-ESHUTDOWN if ring_stop has been called. Zero otherwise.
579 static inline int tb_ring_rx(struct tb_ring *ring, struct ring_frame *frame)  in tb_ring_rx()  argument
581 	WARN_ON(ring->is_tx);  in tb_ring_rx()
582 	return __tb_ring_enqueue(ring, frame);  in tb_ring_rx()
586  * tb_ring_tx() - enqueue a frame on an TX ring
587  * @ring: Ring the enqueue the frame
588  * @frame: Frame to enqueue
590  * @frame->buffer, @frame->buffer_phy, @frame->size, @frame->eof and
591  * @frame->sof have to be set.
593  * @frame->callback will be invoked with once the frame has been transmitted.
595  * If ring_stop() is called after the packet has been enqueued @frame->callback
598  * Return: Returns %-ESHUTDOWN if ring_stop has been called. Zero otherwise.
600 static inline int tb_ring_tx(struct tb_ring *ring, struct ring_frame *frame)  in tb_ring_tx()  argument
602 	WARN_ON(!ring->is_tx);  in tb_ring_tx()
603 	return __tb_ring_enqueue(ring, frame);  in tb_ring_tx()
611  * tb_ring_dma_device() - Return device used for DMA mapping
619 	return &ring->nhi->pdev->dev;  in tb_ring_dma_device()