[dpdk-dev] [PATCH v9] bbdev: add device info related to data endianness assumption

[Nicolas Chautru]

Adding device information to capture explicitly the assumption
of the input/output data byte endianness being processed.

Signed-off-by: Nicolas Chautru <nicolas.chautru at intel.com>
---
 doc/guides/rel_notes/release_21_11.rst             | 1 +
 drivers/baseband/acc100/rte_acc100_pmd.c           | 1 +
 drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c | 1 +
 drivers/baseband/fpga_lte_fec/fpga_lte_fec.c       | 1 +
 drivers/baseband/turbo_sw/bbdev_turbo_software.c   | 1 +
 lib/bbdev/rte_bbdev.h                              | 8 ++++++++
 6 files changed, 13 insertions(+)

diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index a8900a3..f0b3006 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -191,6 +191,7 @@ API Changes
 
 * bbdev: Added capability related to more comprehensive CRC options.
 
+* bbdev: Added device info related to data byte endianness processing assumption.
 
 ABI Changes
 -----------
diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c b/drivers/baseband/acc100/rte_acc100_pmd.c
index 4e2feef..eb2c6c1 100644
--- a/drivers/baseband/acc100/rte_acc100_pmd.c
+++ b/drivers/baseband/acc100/rte_acc100_pmd.c
@@ -1089,6 +1089,7 @@
 #else
 	dev_info->harq_buffer_size = 0;
 #endif
+	dev_info->data_endianness = RTE_BBDEV_LITTLE_ENDIAN;
 	acc100_check_ir(d);
 }
 
diff --git a/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c b/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c
index 6485cc8..c7f15c0 100644
--- a/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c
+++ b/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c
@@ -372,6 +372,7 @@
 	dev_info->default_queue_conf = default_queue_conf;
 	dev_info->capabilities = bbdev_capabilities;
 	dev_info->cpu_flag_reqs = NULL;
+	dev_info->data_endianness = RTE_BBDEV_LITTLE_ENDIAN;
 
 	/* Calculates number of queues assigned to device */
 	dev_info->max_num_queues = 0;
diff --git a/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c b/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
index 350c424..72e213e 100644
--- a/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
+++ b/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
@@ -644,6 +644,7 @@ struct __rte_cache_aligned fpga_queue {
 	dev_info->default_queue_conf = default_queue_conf;
 	dev_info->capabilities = bbdev_capabilities;
 	dev_info->cpu_flag_reqs = NULL;
+	dev_info->data_endianness = RTE_BBDEV_LITTLE_ENDIAN;
 
 	/* Calculates number of queues assigned to device */
 	dev_info->max_num_queues = 0;
diff --git a/drivers/baseband/turbo_sw/bbdev_turbo_software.c b/drivers/baseband/turbo_sw/bbdev_turbo_software.c
index e1db2bf..0cab91a 100644
--- a/drivers/baseband/turbo_sw/bbdev_turbo_software.c
+++ b/drivers/baseband/turbo_sw/bbdev_turbo_software.c
@@ -253,6 +253,7 @@ struct turbo_sw_queue {
 	dev_info->capabilities = bbdev_capabilities;
 	dev_info->min_alignment = 64;
 	dev_info->harq_buffer_size = 0;
+	dev_info->data_endianness = RTE_BBDEV_LITTLE_ENDIAN;
 
 	rte_bbdev_log_debug("got device info from %u\n", dev->data->dev_id);
 }
diff --git a/lib/bbdev/rte_bbdev.h b/lib/bbdev/rte_bbdev.h
index 3ebf62e..b3f3000 100644
--- a/lib/bbdev/rte_bbdev.h
+++ b/lib/bbdev/rte_bbdev.h
@@ -49,6 +49,12 @@ enum rte_bbdev_state {
 	RTE_BBDEV_INITIALIZED
 };
 
+/** Definitions of device data byte endianness types */
+enum rte_bbdev_endianness {
+	RTE_BBDEV_BIG_ENDIAN,    /**< Data with byte-endianness BE */
+	RTE_BBDEV_LITTLE_ENDIAN, /**< Data with byte-endianness LE */
+};
+
 /**
  * Get the total number of devices that have been successfully initialised.
  *
@@ -309,6 +315,8 @@ struct rte_bbdev_driver_info {
 	uint16_t min_alignment;
 	/** HARQ memory available in kB */
 	uint32_t harq_buffer_size;
+	/** Byte endianness assumption for input/output data */
+	enum rte_bbdev_endianness data_endianness;
 	/** Default queue configuration used if none is supplied  */
 	struct rte_bbdev_queue_conf default_queue_conf;
 	/** Device operation capabilities */
-- 
1.8.3.1