crypto: ccree - drop legacy ivgen support

ccree had a mechanism for IV generation which was not compatible
with the Linux seqiv or echainiv iv generator and was never used
in any of the upstream versions so drop all the code implementing it.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 6 insertions, 41 deletions

diff --git a/drivers/crypto/ccree/cc_request_mgr.c b/drivers/crypto/ccree/cc_request_mgr.c
index 0bc6ccb0b899..a947d5a2cf35 100644
--- a/drivers/crypto/ccree/cc_request_mgr.c
+++ b/drivers/crypto/ccree/cc_request_mgr.c
@@ -6,7 +6,6 @@
 #include "cc_driver.h"
 #include "cc_buffer_mgr.h"
 #include "cc_request_mgr.h"
-#include "cc_ivgen.h"
 #include "cc_pm.h"
 
 #define CC_MAX_POLL_ITER	10
@@ -281,36 +280,12 @@ static int cc_queues_status(struct cc_drvdata *drvdata,
 static int cc_do_send_request(struct cc_drvdata *drvdata,
 			      struct cc_crypto_req *cc_req,
 			      struct cc_hw_desc *desc, unsigned int len,
-				bool add_comp, bool ivgen)
+				bool add_comp)
 {
 	struct cc_req_mgr_handle *req_mgr_h = drvdata->request_mgr_handle;
 	unsigned int used_sw_slots;
-	unsigned int iv_seq_len = 0;
 	unsigned int total_seq_len = len; /*initial sequence length*/
-	struct cc_hw_desc iv_seq[CC_IVPOOL_SEQ_LEN];
 	struct device *dev = drvdata_to_dev(drvdata);
-	int rc;
-
-	if (ivgen) {
-		dev_dbg(dev, "Acquire IV from pool into %d DMA addresses %pad, %pad, %pad, IV-size=%u\n",
-			cc_req->ivgen_dma_addr_len,
-			&cc_req->ivgen_dma_addr[0],
-			&cc_req->ivgen_dma_addr[1],
-			&cc_req->ivgen_dma_addr[2],
-			cc_req->ivgen_size);
-
-		/* Acquire IV from pool */
-		rc = cc_get_iv(drvdata, cc_req->ivgen_dma_addr,
-			       cc_req->ivgen_dma_addr_len,
-			       cc_req->ivgen_size, iv_seq, &iv_seq_len);
-
-		if (rc) {
-			dev_err(dev, "Failed to generate IV (rc=%d)\n", rc);
-			return rc;
-		}
-
-		total_seq_len += iv_seq_len;
-	}
 
 	used_sw_slots = ((req_mgr_h->req_queue_head -
 			  req_mgr_h->req_queue_tail) &
@@ -334,8 +309,6 @@ static int cc_do_send_request(struct cc_drvdata *drvdata,
 	wmb();
 
 	/* STAT_PHASE_4: Push sequence */
-	if (ivgen)
-		enqueue_seq(drvdata, iv_seq, iv_seq_len);
 
 	enqueue_seq(drvdata, desc, len);
 
@@ -380,8 +353,6 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata)
 	struct cc_bl_item *bli;
 	struct cc_crypto_req *creq;
 	void *req;
-	bool ivgen;
-	unsigned int total_len;
 	struct device *dev = drvdata_to_dev(drvdata);
 	int rc;
 
@@ -406,12 +377,9 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata)
 			bli->notif = true;
 		}
 
-		ivgen = !!creq->ivgen_dma_addr_len;
-		total_len = bli->len + (ivgen ? CC_IVPOOL_SEQ_LEN : 0);
-
 		spin_lock(&mgr->hw_lock);
 
-		rc = cc_queues_status(drvdata, mgr, total_len);
+		rc = cc_queues_status(drvdata, mgr, bli->len);
 		if (rc) {
 			/*
 			 * There is still not room in the FIFO for
@@ -423,7 +391,7 @@ static void cc_proc_backlog(struct cc_drvdata *drvdata)
 		}
 
 		rc = cc_do_send_request(drvdata, &bli->creq, bli->desc,
-					bli->len, false, ivgen);
+					bli->len, false);
 
 		spin_unlock(&mgr->hw_lock);
 
@@ -447,8 +415,6 @@ int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req,
 {
 	int rc;
 	struct cc_req_mgr_handle *mgr = drvdata->request_mgr_handle;
-	bool ivgen = !!cc_req->ivgen_dma_addr_len;
-	unsigned int total_len = len + (ivgen ? CC_IVPOOL_SEQ_LEN : 0);
 	struct device *dev = drvdata_to_dev(drvdata);
 	bool backlog_ok = req->flags & CRYPTO_TFM_REQ_MAY_BACKLOG;
 	gfp_t flags = cc_gfp_flags(req);
@@ -461,7 +427,7 @@ int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req,
 	}
 
 	spin_lock_bh(&mgr->hw_lock);
-	rc = cc_queues_status(drvdata, mgr, total_len);
+	rc = cc_queues_status(drvdata, mgr, len);
 
 #ifdef CC_DEBUG_FORCE_BACKLOG
 	if (backlog_ok)
@@ -486,8 +452,7 @@ int cc_send_request(struct cc_drvdata *drvdata, struct cc_crypto_req *cc_req,
 	}
 
 	if (!rc)
-		rc = cc_do_send_request(drvdata, cc_req, desc, len, false,
-					ivgen);
+		rc = cc_do_send_request(drvdata, cc_req, desc, len, false);
 
 	spin_unlock_bh(&mgr->hw_lock);
 	return rc;
@@ -527,7 +492,7 @@ int cc_send_sync_request(struct cc_drvdata *drvdata,
 		reinit_completion(&drvdata->hw_queue_avail);
 	}
 
-	rc = cc_do_send_request(drvdata, cc_req, desc, len, true, false);
+	rc = cc_do_send_request(drvdata, cc_req, desc, len, true);
 	spin_unlock_bh(&mgr->hw_lock);
 
 	if (rc != -EINPROGRESS) {