Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 130 insertions, 0 deletions

diff --git a/drivers/net/ipa/gsi_private.h b/drivers/net/ipa/gsi_private.h
new file mode 100644
index 000000000..c65f7c5cd
--- /dev/null
+++ b/drivers/net/ipa/gsi_private.h
@@ -0,0 +1,130 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2018-2022 Linaro Ltd.
+ */
+#ifndef _GSI_PRIVATE_H_
+#define _GSI_PRIVATE_H_
+
+/* === Only "gsi.c" and "gsi_trans.c" should include this file === */
+
+#include <linux/types.h>
+
+struct gsi_trans;
+struct gsi_ring;
+struct gsi_channel;
+
+#define GSI_RING_ELEMENT_SIZE	16	/* bytes; must be a power of 2 */
+
+/**
+ * gsi_trans_move_complete() - Mark a GSI transaction completed
+ * @trans:	Transaction whose state is to be updated
+ */
+void gsi_trans_move_complete(struct gsi_trans *trans);
+
+/**
+ * gsi_trans_move_polled() - Mark a transaction polled
+ * @trans:	Transaction whose state is to be updated
+ */
+void gsi_trans_move_polled(struct gsi_trans *trans);
+
+/**
+ * gsi_trans_complete() - Complete a GSI transaction
+ * @trans:	Transaction to complete
+ *
+ * Marks a transaction complete (including freeing it).
+ */
+void gsi_trans_complete(struct gsi_trans *trans);
+
+/**
+ * gsi_channel_trans_mapped() - Return a transaction mapped to a TRE index
+ * @channel:	Channel associated with the transaction
+ * @index:	Index of the TRE having a transaction
+ *
+ * Return:	The GSI transaction pointer associated with the TRE index
+ */
+struct gsi_trans *gsi_channel_trans_mapped(struct gsi_channel *channel,
+					   u32 index);
+
+/**
+ * gsi_channel_trans_complete() - Return a channel's next completed transaction
+ * @channel:	Channel whose next transaction is to be returned
+ *
+ * Return:	The next completed transaction, or NULL if nothing new
+ */
+struct gsi_trans *gsi_channel_trans_complete(struct gsi_channel *channel);
+
+/**
+ * gsi_channel_trans_cancel_pending() - Cancel pending transactions
+ * @channel:	Channel whose pending transactions should be cancelled
+ *
+ * Cancel all pending transactions on a channel.  These are transactions
+ * that have been committed but not yet completed.  This is required when
+ * the channel gets reset.  At that time all pending transactions will be
+ * marked as cancelled.
+ *
+ * NOTE:  Transactions already complete at the time of this call are
+ *	  unaffected.
+ */
+void gsi_channel_trans_cancel_pending(struct gsi_channel *channel);
+
+/**
+ * gsi_channel_trans_init() - Initialize a channel's GSI transaction info
+ * @gsi:	GSI pointer
+ * @channel_id:	Channel number
+ *
+ * Return:	0 if successful, or -ENOMEM on allocation failure
+ *
+ * Creates and sets up information for managing transactions on a channel
+ */
+int gsi_channel_trans_init(struct gsi *gsi, u32 channel_id);
+
+/**
+ * gsi_channel_trans_exit() - Inverse of gsi_channel_trans_init()
+ * @channel:	Channel whose transaction information is to be cleaned up
+ */
+void gsi_channel_trans_exit(struct gsi_channel *channel);
+
+/**
+ * gsi_channel_doorbell() - Ring a channel's doorbell
+ * @channel:	Channel whose doorbell should be rung
+ *
+ * Rings a channel's doorbell to inform the GSI hardware that new
+ * transactions (TREs, really) are available for it to process.
+ */
+void gsi_channel_doorbell(struct gsi_channel *channel);
+
+/* gsi_channel_update() - Update knowledge of channel hardware state
+ * @channel:	Channel to be updated
+ *
+ * Consult hardware, change the state of any newly-completed transactions
+ * on a channel.
+ */
+void gsi_channel_update(struct gsi_channel *channel);
+
+/**
+ * gsi_ring_virt() - Return virtual address for a ring entry
+ * @ring:	Ring whose address is to be translated
+ * @index:	Index (slot number) of entry
+ */
+void *gsi_ring_virt(struct gsi_ring *ring, u32 index);
+
+/**
+ * gsi_trans_tx_committed() - Record bytes committed for transmit
+ * @trans:	TX endpoint transaction being committed
+ *
+ * Report that a TX transaction has been committed.  It updates some
+ * statistics used to manage transmit rates.
+ */
+void gsi_trans_tx_committed(struct gsi_trans *trans);
+
+/**
+ * gsi_trans_tx_queued() - Report a queued TX channel transaction
+ * @trans:	Transaction being passed to hardware
+ *
+ * Report to the network stack that a TX transaction is being supplied
+ * to the hardware.
+ */
+void gsi_trans_tx_queued(struct gsi_trans *trans);
+
+#endif /* _GSI_PRIVATE_H_ */