Extending existing FFT operation for new capabilities.
Optional frequency domain dewindowing, frequency resampling,
timing error correction and time offset per CS.
Signed-off-by: Nicolas Chautru <nicolas.chau...@intel.com>
---
doc/guides/prog_guide/bbdev.rst | 24 ++++++++++++++++++++++++
lib/bbdev/rte_bbdev_op.h | 23 ++++++++++++++++++++++-
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/doc/guides/prog_guide/bbdev.rst b/doc/guides/prog_guide/bbdev.rst
index 5b09c92963..d5c7522f79 100644
--- a/doc/guides/prog_guide/bbdev.rst
+++ b/doc/guides/prog_guide/bbdev.rst
@@ -1111,6 +1111,18 @@ with the operation flags forming a bitmask in the
``op_flags`` field.
|RTE_BBDEV_FFT_FP16_OUTPUT |
| Set if the output data shall use FP16 format instead of INT16 |
+--------------------------------------------------------------------+
+|RTE_BBDEV_FFT_TIMING_OFFSET_PER_CS |
+| Set if device supports adjusting time offset per CS |
++--------------------------------------------------------------------+
+|RTE_BBDEV_FFT_TIMING_ERROR |
+| Set if device supports correcting for timing error |
++--------------------------------------------------------------------+
+|RTE_BBDEV_FFT_DEWINDOWING |
+| Set if enabling the option FFT Dewindowing in Frequency domain |
++--------------------------------------------------------------------+
+|RTE_BBDEV_FFT_FREQ_RESAMPLING |
+| Set if device supports the optional frequency resampling |
++--------------------------------------------------------------------+
The FFT parameters are set out in the table below.
@@ -1121,6 +1133,8 @@ The FFT parameters are set out in the table below.
+-------------------------+--------------------------------------------------------------+
|base_output |output data
|
+-------------------------+--------------------------------------------------------------+
+|dewindowing_input |optional frequency domain dewindowing input data
|
++-------------------------+--------------------------------------------------------------+
|power_meas_output |optional output data with power measurement on DFT
output |
+-------------------------+--------------------------------------------------------------+
|op_flags |bitmask of all active operation capabilities
|
@@ -1155,6 +1169,16 @@ The FFT parameters are set out in the table below.
+-------------------------+--------------------------------------------------------------+
|fp16_exp_adjust |value added to FP16 exponent at conversion from
INT16 |
+-------------------------+--------------------------------------------------------------+
+|freq_resample_mode |frequency ressampling mode (0:transparent, 1-2:
resample) |
++-------------------------+--------------------------------------------------------------+
+| output_depadded_size |output depadded size prior to frequency resampling
|
++-------------------------+--------------------------------------------------------------+
+|cs_theta_0 |timing error correction initial phase
|
++-------------------------+--------------------------------------------------------------+
+|cs_theta_d |timing error correction phase increment
|
++-------------------------+--------------------------------------------------------------+
+|time_offset |time offset per CS of time domain samples
|
++-------------------------+--------------------------------------------------------------+
The mbuf input ``base_input`` is mandatory for all bbdev PMDs and
is the incoming data for the processing. Its size may not fit into an actual
mbuf,
diff --git a/lib/bbdev/rte_bbdev_op.h b/lib/bbdev/rte_bbdev_op.h
index 990d110fa7..682e265327 100644
--- a/lib/bbdev/rte_bbdev_op.h
+++ b/lib/bbdev/rte_bbdev_op.h
@@ -50,6 +50,7 @@ extern "C" {
#define RTE_BBDEV_LDPC_MAX_CODE_BLOCKS (256)
/* 12 CS maximum */
#define RTE_BBDEV_MAX_CS_2 (6)
+#define RTE_BBDEV_MAX_CS (12)
/* MLD-TS up to 4 layers */
#define RTE_BBDEV_MAX_MLD_LAYERS (4)
/* 12 SB per RB */
@@ -242,7 +243,15 @@ enum rte_bbdev_op_fft_flag_bitmasks {
/** Set if the input data used FP16 format. */
RTE_BBDEV_FFT_FP16_INPUT = (1ULL << 6),
/** Set if the output data uses FP16 format. */
- RTE_BBDEV_FFT_FP16_OUTPUT = (1ULL << 7)
+ RTE_BBDEV_FFT_FP16_OUTPUT = (1ULL << 7),
+ /** Flexible adjustment of Timing offset adjustment per CS. */
+ RTE_BBDEV_FFT_TIMING_OFFSET_PER_CS = (1ULL << 8),
+ /** Flexible adjustment of Timing error correction per CS. */
+ RTE_BBDEV_FFT_TIMING_ERROR = (1ULL << 9),
+ /** Set for optional frequency domain dewindowing. */
+ RTE_BBDEV_FFT_DEWINDOWING = (1ULL << 10),
+ /** Flexible adjustment of frequency resampling mode. */
+ RTE_BBDEV_FFT_FREQ_RESAMPLING = (1ULL << 11)
};
/** Flags for MLDTS operation and capability structure */
@@ -756,6 +765,8 @@ struct rte_bbdev_op_fft {
struct rte_bbdev_op_data base_input;
/** Output data starting from first antenna and first cyclic shift. */
struct rte_bbdev_op_data base_output;
+ /** Optional frequency window input data. */
+ struct rte_bbdev_op_data dewindowing_input;
/** Optional power measurement output data. */
struct rte_bbdev_op_data power_meas_output;
/** Flags from rte_bbdev_op_fft_flag_bitmasks. */
@@ -790,6 +801,16 @@ struct rte_bbdev_op_fft {
uint16_t power_shift;
/** Adjust the FP6 exponent for INT<->FP16 conversion. */
uint16_t fp16_exp_adjust;
+ /** Frequency resampling : 0: Transparent Mode1: 4/3 Resample2: 2/3
Resample. */
+ int8_t freq_resample_mode;
+ /** Output depadded size prior to frequency resampling. */
+ uint16_t output_depadded_size;
+ /** Time error correction initial phase. */
+ uint16_t cs_theta_0[RTE_BBDEV_MAX_CS];
+ /** Time error correction phase increment. */
+ uint32_t cs_theta_d[RTE_BBDEV_MAX_CS];
+ /* Time offset per CS of time domain samples. */
+ int8_t time_offset[RTE_BBDEV_MAX_CS];
};
/* >8 End of structure rte_bbdev_op_fft. */
--
2.34.1
