[dpdk-dev] [PATCH 1/5] crypto/dpaa_sec: optimize virt to phy conversion

[Akhil Goyal]

From: Hemant Agrawal <hemant.agrawal at nxp.com>

Context memory is allocated from mempool. Ideally
it will get all memory from single segment, so simple offset
calculation is used for address conversion for such addresses
from context memory.

Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
Acked-by: Akhil Goyal <akhil.goyal at nxp.com>
---
 drivers/crypto/dpaa_sec/dpaa_sec.c | 27 ++++++++++++++++++---------
 drivers/crypto/dpaa_sec/dpaa_sec.h |  1 +
 2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/drivers/crypto/dpaa_sec/dpaa_sec.c b/drivers/crypto/dpaa_sec/dpaa_sec.c
index 16155b1..a1271be 100644
--- a/drivers/crypto/dpaa_sec/dpaa_sec.c
+++ b/drivers/crypto/dpaa_sec/dpaa_sec.c
@@ -106,6 +106,8 @@ dpaa_sec_alloc_ctx(dpaa_sec_session *ses)
 	dcbz_64(&ctx->job.sg[SG_CACHELINE_3]);
 
 	ctx->ctx_pool = ses->ctx_pool;
+	ctx->vtop_offset = (uint64_t) ctx
+				- rte_mempool_virt2iova(ctx);
 
 	return ctx;
 }
@@ -130,6 +132,13 @@ dpaa_mem_vtop(void *vaddr)
 	return (rte_iova_t)(NULL);
 }
 
+/* virtual address conversin when mempool support is available for ctx */
+static inline phys_addr_t
+dpaa_mem_vtop_ctx(struct dpaa_sec_op_ctx *ctx, void *vaddr)
+{
+	return (uint64_t)vaddr - ctx->vtop_offset;
+}
+
 static inline void *
 dpaa_mem_ptov(rte_iova_t paddr)
 {
@@ -589,7 +598,7 @@ build_auth_only(struct rte_crypto_op *op, dpaa_sec_session *ses)
 	if (is_decode(ses)) {
 		/* need to extend the input to a compound frame */
 		sg->extension = 1;
-		qm_sg_entry_set64(sg, dpaa_mem_vtop(&cf->sg[2]));
+		qm_sg_entry_set64(sg, dpaa_mem_vtop_ctx(ctx, &cf->sg[2]));
 		sg->length = sym->auth.data.length + ses->digest_length;
 		sg->final = 1;
 		cpu_to_hw_sg(sg);
@@ -603,7 +612,7 @@ build_auth_only(struct rte_crypto_op *op, dpaa_sec_session *ses)
 		cpu_to_hw_sg(sg);
 
 		/* let's check digest by hw */
-		start_addr = dpaa_mem_vtop(old_digest);
+		start_addr = dpaa_mem_vtop_ctx(ctx, old_digest);
 		sg++;
 		qm_sg_entry_set64(sg, start_addr);
 		sg->length = ses->digest_length;
@@ -657,7 +666,7 @@ build_cipher_only(struct rte_crypto_op *op, dpaa_sec_session *ses)
 	sg->extension = 1;
 	sg->final = 1;
 	sg->length = sym->cipher.data.length + ses->iv.length;
-	qm_sg_entry_set64(sg, dpaa_mem_vtop(&cf->sg[2]));
+	qm_sg_entry_set64(sg, dpaa_mem_vtop_ctx(ctx, &cf->sg[2]));
 	cpu_to_hw_sg(sg);
 
 	sg = &cf->sg[2];
@@ -703,7 +712,7 @@ build_cipher_auth_gcm(struct rte_crypto_op *op, dpaa_sec_session *ses)
 	/* input */
 	rte_prefetch0(cf->sg);
 	sg = &cf->sg[2];
-	qm_sg_entry_set64(&cf->sg[1], dpaa_mem_vtop(sg));
+	qm_sg_entry_set64(&cf->sg[1], dpaa_mem_vtop_ctx(ctx, sg));
 	if (is_encode(ses)) {
 		qm_sg_entry_set64(sg, dpaa_mem_vtop(IV_ptr));
 		sg->length = ses->iv.length;
@@ -748,7 +757,7 @@ build_cipher_auth_gcm(struct rte_crypto_op *op, dpaa_sec_session *ses)
 		       ses->digest_length);
 		sg++;
 
-		qm_sg_entry_set64(sg, dpaa_mem_vtop(ctx->digest));
+		qm_sg_entry_set64(sg, dpaa_mem_vtop_ctx(ctx, ctx->digest));
 		sg->length = ses->digest_length;
 		length += sg->length;
 		sg->final = 1;
@@ -762,7 +771,7 @@ build_cipher_auth_gcm(struct rte_crypto_op *op, dpaa_sec_session *ses)
 
 	/* output */
 	sg++;
-	qm_sg_entry_set64(&cf->sg[0], dpaa_mem_vtop(sg));
+	qm_sg_entry_set64(&cf->sg[0], dpaa_mem_vtop_ctx(ctx, sg));
 	qm_sg_entry_set64(sg,
 		dst_start_addr + sym->aead.data.offset - ses->auth_only_len);
 	sg->length = sym->aead.data.length + ses->auth_only_len;
@@ -814,7 +823,7 @@ build_cipher_auth(struct rte_crypto_op *op, dpaa_sec_session *ses)
 	/* input */
 	rte_prefetch0(cf->sg);
 	sg = &cf->sg[2];
-	qm_sg_entry_set64(&cf->sg[1], dpaa_mem_vtop(sg));
+	qm_sg_entry_set64(&cf->sg[1], dpaa_mem_vtop_ctx(ctx, sg));
 	if (is_encode(ses)) {
 		qm_sg_entry_set64(sg, dpaa_mem_vtop(IV_ptr));
 		sg->length = ses->iv.length;
@@ -844,7 +853,7 @@ build_cipher_auth(struct rte_crypto_op *op, dpaa_sec_session *ses)
 		       ses->digest_length);
 		sg++;
 
-		qm_sg_entry_set64(sg, dpaa_mem_vtop(ctx->digest));
+		qm_sg_entry_set64(sg, dpaa_mem_vtop_ctx(ctx, ctx->digest));
 		sg->length = ses->digest_length;
 		length += sg->length;
 		sg->final = 1;
@@ -858,7 +867,7 @@ build_cipher_auth(struct rte_crypto_op *op, dpaa_sec_session *ses)
 
 	/* output */
 	sg++;
-	qm_sg_entry_set64(&cf->sg[0], dpaa_mem_vtop(sg));
+	qm_sg_entry_set64(&cf->sg[0], dpaa_mem_vtop_ctx(ctx, sg));
 	qm_sg_entry_set64(sg, dst_start_addr + sym->cipher.data.offset);
 	sg->length = sym->cipher.data.length;
 	length = sg->length;
diff --git a/drivers/crypto/dpaa_sec/dpaa_sec.h b/drivers/crypto/dpaa_sec/dpaa_sec.h
index af3f255..eba07b6 100644
--- a/drivers/crypto/dpaa_sec/dpaa_sec.h
+++ b/drivers/crypto/dpaa_sec/dpaa_sec.h
@@ -181,6 +181,7 @@ struct dpaa_sec_op_ctx {
 	struct rte_crypto_op *op;
 	struct rte_mempool *ctx_pool; /* mempool pointer for dpaa_sec_op_ctx */
 	uint32_t fd_status;
+	int64_t vtop_offset;
 	uint8_t digest[DPAA_MAX_NB_MAX_DIGEST];
 };
 
-- 
2.9.3