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
263 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in gsi_trans_move_pending()
278 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in gsi_trans_move_complete()
294 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in gsi_trans_move_polled()
327 /* Allocate a GSI transaction on a channel */
328 struct gsi_trans *gsi_channel_trans_alloc(struct gsi *gsi, u32 channel_id,  in gsi_channel_trans_alloc()  argument
332 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_channel_trans_alloc()
336 	/* assert(tre_count <= gsi_channel_trans_tre_max(gsi, channel_id)); */  in gsi_channel_trans_alloc()
348 	trans->gsi = gsi;  in gsi_channel_trans_alloc()
381 	trans_info = &trans->gsi->channel[trans->channel_id].trans_info;  in gsi_trans_free()
449 	ret = dma_map_sg(trans->gsi->dev, sg, 1, trans->direction);  in gsi_trans_page_add()
474 	ret = dma_map_sg(trans->gsi->dev, sg, used, trans->direction);  in gsi_trans_skb_add()
531  * __gsi_trans_commit() - Common GSI transaction commit code
543 	struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id];  in __gsi_trans_commit()
603 /* Commit a GSI transaction */
612 /* Commit a GSI transaction and wait for it to complete */
628 /* Commit a GSI transaction and wait for it to complete, with timeout */
655 		dma_unmap_sg(trans->gsi->dev, trans->sgl, trans->used,  in gsi_trans_complete()
672 	/* channel->gsi->mutex is held by caller */  in gsi_channel_trans_cancel_pending()
689 int gsi_trans_read_byte(struct gsi *gsi, u32 channel_id, dma_addr_t addr)  in gsi_trans_read_byte()  argument
691 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_trans_read_byte()
714 void gsi_trans_read_byte_done(struct gsi *gsi, u32 channel_id)  in gsi_trans_read_byte_done()  argument
716 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_trans_read_byte_done()
721 /* Initialize a channel's GSI transaction info */
722 int gsi_channel_trans_init(struct gsi *gsi, u32 channel_id)  in gsi_channel_trans_init()  argument
724 	struct gsi_channel *channel = &gsi->channel[channel_id];  in gsi_channel_trans_init()
749 	tre_max = gsi_channel_tre_max(channel->gsi, channel_id);  in gsi_channel_trans_init()
795 	dev_err(gsi->dev, "error %d initializing channel %u transactions\n",  in gsi_channel_trans_init()