14 #include "gsi.h"
22  * DOC: GSI Transactions
24  * A GSI transaction abstracts the behavior of a GSI channel by representing
27  * command.)  Most details of interaction with the GSI hardware are managed
28  * by the GSI transaction core, allowing users to simply describe commands
33  * To perform a command (or set of them), a user of the GSI transaction
52  * Committing transfers ownership of the entire transaction to the GSI
53  * transaction core.  The GSI transaction code formats the content of
58  * GSI hardware has completed it.  Because transfers described by TREs are
64  * GSI code into the IPA layer, allowing it to perform any final cleanup
259 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in gsi_trans_move_pending()
274 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in gsi_trans_move_complete()
290 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in gsi_trans_move_polled()
323 /* Allocate a GSI transaction on a channel */
324 struct gsi_trans *gsi_channel_trans_alloc(struct gsi *gsi, u32 channel_id,  in gsi_channel_trans_alloc()  argument
328 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_channel_trans_alloc()
332 	if (WARN_ON(tre_count > gsi_channel_trans_tre_max(gsi, channel_id)))  in gsi_channel_trans_alloc()
345 	trans->gsi = gsi;  in gsi_channel_trans_alloc()
378 	trans_info = &trans->gsi->channel[trans->channel_id].trans_info;  in gsi_trans_free()
448 	ret = dma_map_sg(trans->gsi->dev, sg, 1, trans->direction);  in gsi_trans_page_add()
475 	ret = dma_map_sg(trans->gsi->dev, sg, used, trans->direction);  in gsi_trans_skb_add()
532  * __gsi_trans_commit() - Common GSI transaction commit code
544 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in __gsi_trans_commit()
604 /* Commit a GSI transaction */
613 /* Commit a GSI transaction and wait for it to complete */
629 /* Commit a GSI transaction and wait for it to complete, with timeout */
656 		dma_unmap_sg(trans->gsi->dev, trans->sgl, trans->used,  in gsi_trans_complete()
673 	/* channel->gsi->mutex is held by caller */  in gsi_channel_trans_cancel_pending()
690 int gsi_trans_read_byte(struct gsi *gsi, u32 channel_id, dma_addr_t addr)  in gsi_trans_read_byte()  argument
692 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_trans_read_byte()
715 void gsi_trans_read_byte_done(struct gsi *gsi, u32 channel_id)  in gsi_trans_read_byte_done()  argument
717 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_trans_read_byte_done()
722 /* Initialize a channel's GSI transaction info */
723 int gsi_channel_trans_init(struct gsi *gsi, u32 channel_id)  in gsi_channel_trans_init()  argument
725 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_channel_trans_init()
750 	tre_max = gsi_channel_tre_max(channel->gsi, channel_id);  in gsi_channel_trans_init()
796 	dev_err(gsi->dev, "error %d initializing channel %u transactions\n",  in gsi_channel_trans_init()