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From: Nicolas Chautru <nicolas.chautru@intel.com>
To: dev@dpdk.org, gakhil@marvell.com
Cc: thomas@monjalon.net, trix@redhat.com, hemant.agrawal@nxp.com,
	mingshan.zhang@intel.com, arun.joshi@intel.com,
	Nicolas Chautru <nicolas.chautru@intel.com>
Subject: [dpdk-dev] [PATCH v2 4/6] baseband/acc100: add support for 4G CRC drop
Date: Thu, 19 Aug 2021 14:10:08 -0700	[thread overview]
Message-ID: <1629407410-28822-5-git-send-email-nicolas.chautru@intel.com> (raw)
In-Reply-To: <1629407410-28822-1-git-send-email-nicolas.chautru@intel.com>

This implements in PMD the option to drop the CB CRC
after 4G decoding to help transport block concatenation.

Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
---
 doc/guides/bbdevs/acc100.rst             |  1 +
 doc/guides/rel_notes/release_21_11.rst   |  4 ++++
 drivers/baseband/acc100/rte_acc100_pmd.c | 12 +++++++++---
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/doc/guides/bbdevs/acc100.rst b/doc/guides/bbdevs/acc100.rst
index ff0fa4b..9fff6ab 100644
--- a/doc/guides/bbdevs/acc100.rst
+++ b/doc/guides/bbdevs/acc100.rst
@@ -58,6 +58,7 @@ ACC100 5G/4G FEC PMD supports the following BBDEV capabilities:
    - ``RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN`` :  set if negative LLR encoder i/p is supported
    - ``RTE_BBDEV_TURBO_POS_LLR_1_BIT_IN`` :  set if positive LLR encoder i/p is supported
    - ``RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP`` :  keep CRC24B bits appended while decoding
+   - ``RTE_BBDEV_TURBO_DEC_CRC_24B_DROP`` : option to drop the code block CRC after decoding
    - ``RTE_BBDEV_TURBO_EARLY_TERMINATION`` :  set early termination feature
    - ``RTE_BBDEV_TURBO_DEC_SCATTER_GATHER`` :  supports scatter-gather for input/output data
    - ``RTE_BBDEV_TURBO_HALF_ITERATION_EVEN`` :  set half iteration granularity
diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 8ca59b7..f7843bc 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -59,6 +59,10 @@ New Features
 
   Added support for more comprehensive CRC options.
 
+* **Updated the ACC100 bbdev PMD.**
+
+  Added support for more comprehensive CRC options.
+
 Removed Items
 -------------
 
diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c b/drivers/baseband/acc100/rte_acc100_pmd.c
index 68ba523..891be81 100644
--- a/drivers/baseband/acc100/rte_acc100_pmd.c
+++ b/drivers/baseband/acc100/rte_acc100_pmd.c
@@ -980,6 +980,7 @@
 					RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN |
 					RTE_BBDEV_TURBO_MAP_DEC |
 					RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP |
+					RTE_BBDEV_TURBO_DEC_CRC_24B_DROP |
 					RTE_BBDEV_TURBO_DEC_SCATTER_GATHER,
 				.max_llr_modulus = INT8_MAX,
 				.num_buffers_src =
@@ -1708,8 +1709,12 @@
 	}
 
 	if ((op->turbo_dec.code_block_mode == RTE_BBDEV_TRANSPORT_BLOCK)
-		&& !check_bit(op->turbo_dec.op_flags,
-		RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP))
+			&& !check_bit(op->turbo_dec.op_flags,
+			RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP))
+		crc24_overlap = 24;
+	if ((op->turbo_dec.code_block_mode == RTE_BBDEV_CODE_BLOCK)
+			&& check_bit(op->turbo_dec.op_flags,
+			RTE_BBDEV_TURBO_DEC_CRC_24B_DROP))
 		crc24_overlap = 24;
 
 	/* Calculates circular buffer size.
@@ -1744,7 +1749,8 @@
 
 	next_triplet = acc100_dma_fill_blk_type_out(
 			desc, h_output, *h_out_offset,
-			k >> 3, next_triplet, ACC100_DMA_BLKID_OUT_HARD);
+			(k - crc24_overlap)  >> 3, next_triplet,
+			ACC100_DMA_BLKID_OUT_HARD);
 	if (unlikely(next_triplet < 0)) {
 		rte_bbdev_log(ERR,
 				"Mismatch between data to process and mbuf data length in bbdev_op: %p",
-- 
1.8.3.1


  parent reply	other threads:[~2021-08-19 21:10 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-19 21:10 [dpdk-dev] [PATCH v2 0/6] bbdev update related to CRC usage Nicolas Chautru
2021-08-19 21:10 ` [dpdk-dev] [PATCH v2 1/6] bbdev: add capability for CRC16 check Nicolas Chautru
2021-09-01 13:36   ` Tom Rix
2021-09-01 15:00     ` Chautru, Nicolas
2021-09-11 19:11       ` Tom Rix
2021-08-19 21:10 ` [dpdk-dev] [PATCH v2 2/6] baseband/turbo_sw: add support for CRC16 Nicolas Chautru
2021-09-01 14:00   ` Tom Rix
2021-09-08  0:54     ` Chautru, Nicolas
2021-08-19 21:10 ` [dpdk-dev] [PATCH v2 3/6] bbdev: add capability for 4G CB CRC DROP Nicolas Chautru
2021-08-19 21:10 ` Nicolas Chautru [this message]
2021-09-01 14:20   ` [dpdk-dev] [PATCH v2 4/6] baseband/acc100: add support for 4G CRC drop Tom Rix
2021-09-08  1:04     ` Chautru, Nicolas
2021-09-11 19:13       ` Tom Rix
2021-08-19 21:10 ` [dpdk-dev] [PATCH v2 5/6] doc: clarification of usage of HARQ in bbdev doc Nicolas Chautru
2021-08-19 21:10 ` [dpdk-dev] [PATCH v2 6/6] bbdev: reduce warning level for one scenario Nicolas Chautru
2021-08-20  2:15   ` Zhang, Mingshan
2021-09-01 14:29   ` Tom Rix
2021-09-08  1:12     ` Chautru, Nicolas

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