From: Nic Chautru <nicolas.chau...@intel.com>
Supports for FEC 5G PMD Driver on FPGA card PAC N3000
Signed-off-by: Nic Chautru <nicolas.chau...@intel.com>
---
config/common_base | 5 +
doc/guides/bbdevs/fpga_5gnr_fec.rst | 297 +++
doc/guides/bbdevs/index.rst | 1 +
doc/guides/rel_notes/release_20_05.rst | 6 +
drivers/baseband/Makefile | 2 +
drivers/baseband/fpga_5gnr_fec/Makefile | 29 +
drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.c | 2552 ++++++++++++++++++++
drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.h | 74 +
drivers/baseband/fpga_5gnr_fec/meson.build | 6 +
.../rte_pmd_bbdev_fpga_5gnr_fec_version.map | 10 +
drivers/baseband/meson.build | 2 +-
mk/rte.app.mk | 1 +
12 files changed, 2984 insertions(+), 1 deletion(-)
create mode 100644 doc/guides/bbdevs/fpga_5gnr_fec.rst
create mode 100644 drivers/baseband/fpga_5gnr_fec/Makefile
create mode 100644 drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.c
create mode 100644 drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.h
create mode 100644 drivers/baseband/fpga_5gnr_fec/meson.build
create mode 100644
drivers/baseband/fpga_5gnr_fec/rte_pmd_bbdev_fpga_5gnr_fec_version.map
diff --git a/config/common_base b/config/common_base
index 7ca2f28..7280ee2 100644
--- a/config/common_base
+++ b/config/common_base
@@ -578,6 +578,11 @@ CONFIG_RTE_LIBRTE_PMD_BBDEV_TURBO_SW=y
CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_LTE_FEC=y
#
+# Compile PMD for Intel FPGA 5GNR FEC bbdev device
+#
+CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_5GNR_FEC=y
+
+#
# Compile generic crypto device library
#
CONFIG_RTE_LIBRTE_CRYPTODEV=y
diff --git a/doc/guides/bbdevs/fpga_5gnr_fec.rst
b/doc/guides/bbdevs/fpga_5gnr_fec.rst
new file mode 100644
index 0000000..5641b1a
--- /dev/null
+++ b/doc/guides/bbdevs/fpga_5gnr_fec.rst
@@ -0,0 +1,297 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2019 Intel Corporation
+
+Intel(R) FPGA 5GNR FEC Poll Mode Driver
+======================================
+
+The BBDEV FPGA 5GNR FEC poll mode driver (PMD) supports an FPGA implementation
of a VRAN
+LDPC Encode / Decode 5GNR wireless acceleration function, using Intel's PCI-e
and FPGA
+based Vista Creek device.
+
+Features
+--------
+
+FPGA 5GNR FEC PMD supports the following features:
+
+- LDPC Encode in the DL
+- LDPC Decode in the UL
+- 8 VFs per PF (physical device)
+- Maximum of 32 UL queues per VF
+- Maximum of 32 DL queues per VF
+- PCIe Gen-3 x8 Interface
+- MSI-X
+- SR-IOV
+
+FPGA 5GNR FEC PMD supports the following BBDEV capabilities:
+
+* For the LDPC encode operation:
+ - ``RTE_BBDEV_LDPC_CRC_24B_ATTACH`` : set to attach CRC24B to CB(s)
+ - ``RTE_BBDEV_LDPC_RATE_MATCH`` : if set then do not do Rate Match bypass
+
+* For the LDPC decode operation:
+ - ``RTE_BBDEV_LDPC_CRC_TYPE_24B_CHECK`` : check CRC24B from CB(s)
+ - ``RTE_BBDEV_LDPC_ITERATION_STOP_ENABLE`` : disable early termination
+ - ``RTE_BBDEV_LDPC_CRC_TYPE_24B_DROP`` : drops CRC24B bits appended while
decoding
+ - ``RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE`` : provides an input for HARQ
combining
+ - ``RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE`` : provides an input for HARQ
combining
+ - ``RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_IN_ENABLE`` : HARQ memory input is
internal
+ - ``RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_OUT_ENABLE`` : HARQ memory output
is internal
+ - ``RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_LOOPBACK`` : loopback data to/from
HARQ memory
+ - ``RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_FILLERS`` : HARQ memory includes
the fillers bits
+
+
+Limitations
+-----------
+
+FPGA 5GNR FEC does not support the following:
+
+- Scatter-Gather function
+
+
+Installation
+--------------
+
+Section 3 of the DPDK manual provides instuctions on installing and compiling
DPDK. The
+default set of bbdev compile flags may be found in config/common_base, where
for example
+the flag to build the FPGA 5GNR FEC device,
``CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_5GNR_FEC``,
+is already set. It is assumed DPDK has been compiled using for instance:
+
+.. code-block:: console
+
+ make install T=x86_64-native-linuxapp-gcc
+
+
+DPDK requires hugepages to be configured as detailed in section 2 of the DPDK
manual.
+The bbdev test application has been tested with a configuration 40 x 1GB
hugepages. The
+hugepage configuration of a server may be examined using:
+
+.. code-block:: console
+
+ grep Huge* /proc/meminfo
+
+
+Initialization
+--------------
+
+When the device first powers up, its PCI Physical Functions (PF) can be listed
through this command:
+
+.. code-block:: console
+
+ sudo lspci -vd8086:0d8f
+
+The physical and virtual functions are compatible with Linux UIO drivers:
+``vfio`` and ``igb_uio``. However, in order to work the FPGA 5GNR FEC device
firstly needs
+to be bound to one of these linux drivers through DPDK.
+
+
+Bind PF UIO driver(s)
+~~~~~~~~~~~~~~~~~~~~~
+
+Install the DPDK igb_uio driver, bind it with the PF PCI device ID and use
+``lspci`` to confirm the PF device is under use by ``igb_uio`` DPDK UIO driver.
+
+The igb_uio driver may be bound to the PF PCI device using one of three
methods:
+
+
+1. PCI functions (physical or virtual, depending on the use case) can be bound
to
+the UIO driver by repeating this command for every function.
+
+.. code-block:: console
+
+ cd <dpdk-top-level-directory>
+ insmod ./build/kmod/igb_uio.ko
+ echo "8086 0d8f" > /sys/bus/pci/drivers/igb_uio/new_id
+ lspci -vd8086:0d8f
+
+
+2. Another way to bind PF with DPDK UIO driver is by using the
``dpdk-devbind.py`` tool
+
+.. code-block:: console
+
+ cd <dpdk-top-level-directory>
+ ./usertools/dpdk-devbind.py -b igb_uio 0000:06:00.0
+
+where the PCI device ID (example: 0000:06:00.0) is obtained using lspci
-vd8086:0d8f
+
+
+3. A third way to bind is to use ``dpdk-setup.sh`` tool
+
+.. code-block:: console
+
+ cd <dpdk-top-level-directory>
+ ./usertools/dpdk-setup.sh
+
+ select 'Bind Ethernet/Crypto/Baseband device to IGB UIO module'
+ or
+ select 'Bind Ethernet/Crypto/Baseband device to VFIO module' depending on
driver required
+ enter PCI device ID
+ select 'Display current Ethernet/Crypto/Baseband device settings' to confirm
binding
+
+
+In the same way the FPGA 5GNR FEC PF can be bound with vfio, but vfio driver
does not
+support SR-IOV configuration right out of the box, so it will need to be
patched.
+
+
+Enable Virtual Functions
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Now, it should be visible in the printouts that PCI PF is under igb_uio control
+"``Kernel driver in use: igb_uio``"
+
+To show the number of available VFs on the device, read ``sriov_totalvfs``
file..
+
+.. code-block:: console
+
+ cat /sys/bus/pci/devices/0000\:<b>\:<d>.<f>/sriov_totalvfs
+
+ where 0000\:<b>\:<d>.<f> is the PCI device ID
+
+
+To enable VFs via igb_uio, echo the number of virtual functions intended to
+enable to ``max_vfs`` file..
+
+.. code-block:: console
+
+ echo <num-of-vfs> > /sys/bus/pci/devices/0000\:<b>\:<d>.<f>/max_vfs
+
+
+Afterwards, all VFs must be bound to appropriate UIO drivers as required, same
+way it was done with the physical function previously.
+
+Enabling SR-IOV via vfio driver is pretty much the same, except that the file
+name is different:
+
+.. code-block:: console
+
+ echo <num-of-vfs> > /sys/bus/pci/devices/0000\:<b>\:<d>.<f>/sriov_numvfs
+
+
+Configure the VFs through PF
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The PCI virtual functions must be configured before working or getting assigned
+to VMs/Containers. The configuration involves allocating the number of hardware
+queues, priorities, load balance, bandwidth and other settings necessary for
the
+device to perform FEC functions.
+
+This configuration needs to be executed at least once after reboot or PCI FLR
and can
+be achieved by using the function ``fpga_5gnr_fec_configure()``, which sets up
the
+parameters defined in ``fpga_5gnr_fec_conf`` structure:
+
+.. code-block:: c
+
+ struct fpga_5gnr_fec_conf {
+ bool pf_mode_en;
+ uint8_t vf_ul_queues_number[FPGA_5GNR_FEC_NUM_VFS];
+ uint8_t vf_dl_queues_number[FPGA_5GNR_FEC_NUM_VFS];
+ uint8_t ul_bandwidth;
+ uint8_t dl_bandwidth;
+ uint8_t ul_load_balance;
+ uint8_t dl_load_balance;
+ uint16_t flr_time_out;
+ };
+
+- ``pf_mode_en``: identifies whether only PF is to be used, or the VFs. PF and
+ VFs are mutually exclusive and cannot run simultaneously.
+ Set to 1 for PF mode enabled.
+ If PF mode is enabled all queues available in the device are assigned
+ exclusively to PF and 0 queues given to VFs.
+
+- ``vf_*l_queues_number``: defines the hardware queue mapping for every VF.
+
+- ``*l_bandwidth``: in case of congestion on PCIe interface. The device
+ allocates different bandwidth to UL and DL. The weight is configured by this
+ setting. The unit of weight is 3 code blocks. For example, if the code block
+ cbps (code block per second) ratio between UL and DL is 12:1, then the
+ configuration value should be set to 36:3. The schedule algorithm is based
+ on code block regardless the length of each block.
+
+- ``*l_load_balance``: hardware queues are load-balanced in a round-robin
+ fashion. Queues get filled first-in first-out until they reach a pre-defined
+ watermark level, if exceeded, they won't get assigned new code blocks..
+ This watermark is defined by this setting.
+
+ If all hardware queues exceeds the watermark, no code blocks will be
+ streamed in from UL/DL code block FIFO.
+
+- ``flr_time_out``: specifies how many 16.384us to be FLR time out. The
+ time_out = flr_time_out x 16.384us. For instance, if you want to set 10ms for
+ the FLR time out then set this setting to 0x262=610.
+
+
+An example configuration code calling the function
``fpga_5gnr_fec_configure()`` is shown
+below:
+
+.. code-block:: c
+
+ struct fpga_5gnr_fec_conf conf;
+ unsigned int i;
+
+ memset(&conf, 0, sizeof(struct fpga_5gnr_fec_conf));
+ conf.pf_mode_en = 1;
+
+ for (i = 0; i < FPGA_5GNR_FEC_NUM_VFS; ++i) {
+ conf.vf_ul_queues_number[i] = 4;
+ conf.vf_dl_queues_number[i] = 4;
+ }
+ conf.ul_bandwidth = 12;
+ conf.dl_bandwidth = 5;
+ conf.dl_load_balance = 64;
+ conf.ul_load_balance = 64;
+
+ /* setup FPGA PF */
+ ret = fpga_5gnr_fec_configure(info->dev_name, &conf);
+ TEST_ASSERT_SUCCESS(ret,
+ "Failed to configure 4G FPGA PF for bbdev %s",
+ info->dev_name);
+
+
+Test Application
+----------------
+
+BBDEV provides a test application, ``test-bbdev.py`` and range of test data
for testing
+the functionality of FPGA 5GNR FEC encode and decode, depending on the device's
+capabilities. The test application is located under app->test-bbdev folder and
has the
+following options:
+
+.. code-block:: console
+
+ "-p", "--testapp-path": specifies path to the bbdev test app.
+ "-e", "--eal-params" : EAL arguments which are passed to the test app.
+ "-t", "--timeout" : Timeout in seconds (default=300).
+ "-c", "--test-cases" : Defines test cases to run. Run all if not
specified.
+ "-v", "--test-vector" : Test vector path
(default=dpdk_path+/app/test-bbdev/test_vectors/bbdev_null.data).
+ "-n", "--num-ops" : Number of operations to process on device
(default=32).
+ "-b", "--burst-size" : Operations enqueue/dequeue burst size
(default=32).
+ "-l", "--num-lcores" : Number of lcores to run (default=16).
+ "-i", "--init-device" : Initialise PF device with default values.
+
+
+To execute the test application tool using simple decode or encode data,
+type one of the following:
+
+.. code-block:: console
+
+ ./test-bbdev.py -c validation -n 64 -b 1 -v ./ldpc_dec_default.data
+ ./test-bbdev.py -c validation -n 64 -b 1 -v ./ldpc_enc_default.data
+
+
+The test application ``test-bbdev.py``, supports the ability to configure the
PF device with
+a default set of values, if the "-i" or "- -init-device" option is included.
The default values
+are defined in test_bbdev_perf.c as:
+
+- VF_UL_QUEUE_VALUE 4
+- VF_DL_QUEUE_VALUE 4
+- UL_BANDWIDTH 3
+- DL_BANDWIDTH 3
+- UL_LOAD_BALANCE 128
+- DL_LOAD_BALANCE 128
+- FLR_TIMEOUT 610
+
+
+Test Vectors
+~~~~~~~~~~~~
+
+In addition to the simple LDPC decoder and LDPC encoder tests, bbdev also
provides
+a range of additional tests under the test_vectors folder, which may be
useful. The results
+of these tests will depend on the FPGA 5GNR FEC capabilities.
diff --git a/doc/guides/bbdevs/index.rst b/doc/guides/bbdevs/index.rst
index 005b95e..1a79343 100644
--- a/doc/guides/bbdevs/index.rst
+++ b/doc/guides/bbdevs/index.rst
@@ -11,3 +11,4 @@ Baseband Device Drivers
null
turbo_sw
fpga_lte_fec
+ fpga_5gnr_fec
diff --git a/doc/guides/rel_notes/release_20_05.rst
b/doc/guides/rel_notes/release_20_05.rst
index d6c3dfb..083bb0d 100644
--- a/doc/guides/rel_notes/release_20_05.rst
+++ b/doc/guides/rel_notes/release_20_05.rst
@@ -56,6 +56,12 @@ New Features
Also, make sure to start the actual text at the margin.
=========================================================
+* **Added a FPGA_5GNR_FEC bbdev PMD.**
+
+ Added a new ``fpga_5gnr_fec`` bbdev driver for the Intel\ |reg| FPGA PAC
+ (Programmable Acceleration Card) N3000. See the
+ :doc:`../bbdevs/fpga_5gnr_fec` BBDEV guide for more details on this new
driver.
+
* **Updated the TURBO_SW bbdev PMD.**
Updated the ``turbo_sw`` bbdev driver with changes including:
diff --git a/drivers/baseband/Makefile b/drivers/baseband/Makefile
index 91048be..762773c 100644
--- a/drivers/baseband/Makefile
+++ b/drivers/baseband/Makefile
@@ -12,5 +12,7 @@ DIRS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_TURBO_SW) += turbo_sw
DEPDIRS-turbo_sw = $(core-libs)
DIRS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_LTE_FEC) += fpga_lte_fec
DEPDIRS-fpga_lte_fec = $(core-libs)
+DIRS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_LTE_FEC) += fpga_5gnr_fec
+DEPDIRS-fpga_5gnr_fec = $(core-libs)
include $(RTE_SDK)/mk/rte.subdir.mk
diff --git a/drivers/baseband/fpga_5gnr_fec/Makefile
b/drivers/baseband/fpga_5gnr_fec/Makefile
new file mode 100644
index 0000000..de80d67
--- /dev/null
+++ b/drivers/baseband/fpga_5gnr_fec/Makefile
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2019 Intel Corporation
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# library name
+LIB = librte_pmd_bbdev_fpga_5gnr_fec.a
+
+# build flags
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
+LDLIBS += -lrte_bbdev
+LDLIBS += -lrte_pci -lrte_bus_pci
+
+# versioning export map
+EXPORT_MAP := rte_pmd_bbdev_fpga_5gnr_fec_version.map
+
+# library version
+LIBABIVER := 1
+
+# library source files
+SRCS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_5GNR_FEC) += fpga_5gnr_fec.c
+
+# export include files
+SYMLINK-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_5GNR_FEC)-include += fpga_5gnr_fec.h
+
+include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.c
b/drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.c
new file mode 100644
index 0000000..5935e24
--- /dev/null
+++ b/drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.c
@@ -0,0 +1,2552 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2020 Intel Corporation
+ */
+
+#include <unistd.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_dev.h>
+#include <rte_malloc.h>
+#include <rte_mempool.h>
+#include <rte_errno.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_byteorder.h>
+#ifdef RTE_BBDEV_OFFLOAD_COST
+#include <rte_cycles.h>
+#endif
+
+#include <rte_bbdev.h>
+#include <rte_bbdev_pmd.h>
+
+#include "fpga_5gnr_fec.h"
+
+/* 5GNR SW PMD logging ID */
+static int fpga_5gnr_fec_logtype;
+
+/* Helper macro for logging */
+#define rte_bbdev_log(level, fmt, ...) \
+ rte_log(RTE_LOG_ ## level, fpga_5gnr_fec_logtype, fmt "\n", \
+ ##__VA_ARGS__)
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+#define rte_bbdev_log_debug(fmt, ...) \
+ rte_bbdev_log(DEBUG, "fpga_5gnr_fec: " fmt, \
+ ##__VA_ARGS__)
+#else
+#define rte_bbdev_log_debug(fmt, ...)
+#endif
+
+/* FPGA 5GNR FEC driver names */
+#define FPGA_5GNR_FEC_PF_DRIVER_NAME intel_fpga_5gnr_fec_pf
+#define FPGA_5GNR_FEC_VF_DRIVER_NAME intel_fpga_5gnr_fec_vf
+
+/* FPGA 5GNR FEC PCI vendor & device IDs */
+#define FPGA_5GNR_FEC_VENDOR_ID (0x8086)
+#define FPGA_5GNR_FEC_PF_DEVICE_ID (0x0D8F)
+#define FPGA_5GNR_FEC_VF_DEVICE_ID (0x0D90)
+
+/* Align DMA descriptors to 256 bytes - cache-aligned */
+#define FPGA_RING_DESC_ENTRY_LENGTH (8)
+/* Ring size is in 256 bits (32 bytes) units */
+#define FPGA_RING_DESC_LEN_UNIT_BYTES (32)
+/* Maximum size of queue */
+#define FPGA_RING_MAX_SIZE (1024)
+#define FPGA_FLR_TIMEOUT_UNIT (16.384)
+
+#define FPGA_NUM_UL_QUEUES (32)
+#define FPGA_NUM_DL_QUEUES (32)
+#define FPGA_TOTAL_NUM_QUEUES (FPGA_NUM_UL_QUEUES + FPGA_NUM_DL_QUEUES)
+#define FPGA_NUM_INTR_VEC (FPGA_TOTAL_NUM_QUEUES - RTE_INTR_VEC_RXTX_OFFSET)
+
+#define FPGA_INVALID_HW_QUEUE_ID (0xFFFFFFFF)
+
+#define FPGA_QUEUE_FLUSH_TIMEOUT_US (1000)
+#define FPGA_HARQ_RDY_TIMEOUT (10)
+#define FPGA_TIMEOUT_CHECK_INTERVAL (5)
+#define FPGA_DDR_OVERFLOW (0x10)
+
+#define FPGA_5GNR_FEC_DDR_WR_DATA_LEN_IN_BYTES 8
+#define FPGA_5GNR_FEC_DDR_RD_DATA_LEN_IN_BYTES 8
+
+
+/* FPGA 5GNR FEC Register mapping on BAR0 */
+enum {
+ FPGA_5GNR_FEC_VERSION_ID = 0x00000000, /* len: 4B */
+ FPGA_5GNR_FEC_CONFIGURATION = 0x00000004, /* len: 2B */
+ FPGA_5GNR_FEC_QUEUE_PF_VF_MAP_DONE = 0x00000008, /* len: 1B */
+ FPGA_5GNR_FEC_LOAD_BALANCE_FACTOR = 0x0000000a, /* len: 2B */
+ FPGA_5GNR_FEC_RING_DESC_LEN = 0x0000000c, /* len: 2B */
+ FPGA_5GNR_FEC_FLR_TIME_OUT = 0x0000000e, /* len: 2B */
+ FPGA_5GNR_FEC_VFQ_FLUSH_STATUS_LW = 0x00000018, /* len: 4B */
+ FPGA_5GNR_FEC_VFQ_FLUSH_STATUS_HI = 0x0000001c, /* len: 4B */
+ FPGA_5GNR_FEC_QUEUE_MAP = 0x00000040, /* len: 256B */
+ FPGA_5GNR_FEC_RING_CTRL_REGS = 0x00000200, /* len: 2048B */
+ FPGA_5GNR_FEC_DDR4_WR_ADDR_REGS = 0x00000A00, /* len: 4B */
+ FPGA_5GNR_FEC_DDR4_WR_DATA_REGS = 0x00000A08, /* len: 8B */
+ FPGA_5GNR_FEC_DDR4_WR_DONE_REGS = 0x00000A10, /* len: 1B */
+ FPGA_5GNR_FEC_DDR4_RD_ADDR_REGS = 0x00000A18, /* len: 4B */
+ FPGA_5GNR_FEC_DDR4_RD_DONE_REGS = 0x00000A20, /* len: 1B */
+ FPGA_5GNR_FEC_DDR4_RD_RDY_REGS = 0x00000A28, /* len: 1B */
+ FPGA_5GNR_FEC_DDR4_RD_DATA_REGS = 0x00000A30, /* len: 8B */
+ FPGA_5GNR_FEC_DDR4_ADDR_RDY_REGS = 0x00000A38, /* len: 1B */
+ FPGA_5GNR_FEC_HARQ_BUF_SIZE_RDY_REGS = 0x00000A40, /* len: 1B */
+ FPGA_5GNR_FEC_HARQ_BUF_SIZE_REGS = 0x00000A48 /* len: 4B */
+};
+
+/* FPGA 5GNR FEC Ring Control Registers */
+enum {
+ FPGA_5GNR_FEC_RING_HEAD_ADDR = 0x00000008,
+ FPGA_5GNR_FEC_RING_SIZE = 0x00000010,
+ FPGA_5GNR_FEC_RING_MISC = 0x00000014,
+ FPGA_5GNR_FEC_RING_ENABLE = 0x00000015,
+ FPGA_5GNR_FEC_RING_FLUSH_QUEUE_EN = 0x00000016,
+ FPGA_5GNR_FEC_RING_SHADOW_TAIL = 0x00000018,
+ FPGA_5GNR_FEC_RING_HEAD_POINT = 0x0000001C
+};
+
+/* FPGA 5GNR FEC DESCRIPTOR ERROR */
+enum {
+ DESC_ERR_NO_ERR = 0x0,
+ DESC_ERR_K_P_OUT_OF_RANGE = 0x1,
+ DESC_ERR_Z_C_NOT_LEGAL = 0x2,
+ DESC_ERR_DESC_OFFSET_ERR = 0x3,
+ DESC_ERR_DESC_READ_FAIL = 0x8,
+ DESC_ERR_DESC_READ_TIMEOUT = 0x9,
+ DESC_ERR_DESC_READ_TLP_POISONED = 0xA,
+ DESC_ERR_CB_READ_FAIL = 0xC,
+ DESC_ERR_CB_READ_TIMEOUT = 0xD,
+ DESC_ERR_CB_READ_TLP_POISONED = 0xE,
+ DESC_ERR_HBSTORE_ERR = 0xF
+};
+
+
+/* FPGA 5GNR FEC DMA Encoding Request Descriptor */
+struct __attribute__((__packed__)) fpga_dma_enc_desc {
+ uint32_t done:1,
+ rsrvd0:7,
+ error:4,
+ rsrvd1:4,
+ num_null:10,
+ rsrvd2:6;
+ uint32_t ncb:15,
+ rsrvd3:1,
+ k0:16;
+ uint32_t irq_en:1,
+ crc_en:1,
+ rsrvd4:1,
+ qm_idx:3,
+ bg_idx:1,
+ zc:9,
+ desc_idx:10,
+ rsrvd5:6;
+ uint16_t rm_e;
+ uint16_t k_;
+ uint32_t out_addr_lw;
+ uint32_t out_addr_hi;
+ uint32_t in_addr_lw;
+ uint32_t in_addr_hi;
+
+ union {
+ struct {
+ /* Virtual addresses used to retrieve SW context info */
+ void *op_addr;
+ /* Stores information about total number of Code Blocks
+ * in currently processed Transport Block
+ */
+ uint64_t cbs_in_op;
+ };
+
+ uint8_t sw_ctxt[FPGA_RING_DESC_LEN_UNIT_BYTES *
+ (FPGA_RING_DESC_ENTRY_LENGTH - 1)];
+ };
+};
+
+
+/* FPGA 5GNR DPC FEC DMA Decoding Request Descriptor */
+struct __attribute__((__packed__)) fpga_dma_dec_desc {
+ uint32_t done:1,
+ iter:5,
+ et_pass:1,
+ crcb_pass:1,
+ error:4,
+ qm_idx:3,
+ max_iter:5,
+ bg_idx:1,
+ rsrvd0:1,
+ harqin_en:1,
+ zc:9;
+ uint32_t hbstroe_offset:22,
+ num_null:10;
+ uint32_t irq_en:1,
+ ncb:15,
+ desc_idx:10,
+ drop_crc24b:1,
+ crc24b_ind:1,
+ rv:2,
+ et_dis:1,
+ rsrvd2:1;
+ uint32_t harq_input_length:16,
+ rm_e:16;/*the inbound data byte length*/
+ uint32_t out_addr_lw;
+ uint32_t out_addr_hi;
+ uint32_t in_addr_lw;
+ uint32_t in_addr_hi;
+
+ union {
+ struct {
+ /* Virtual addresses used to retrieve SW context info */
+ void *op_addr;
+ /* Stores information about total number of Code Blocks
+ * in currently processed Transport Block
+ */
+ uint8_t cbs_in_op;
+ };
+
+ uint32_t sw_ctxt[8 * (FPGA_RING_DESC_ENTRY_LENGTH - 1)];
+ };
+};
+
+/* FPGA 5GNR DMA Descriptor */
+union fpga_dma_desc {
+ struct fpga_dma_enc_desc enc_req;
+ struct fpga_dma_dec_desc dec_req;
+};
+
+/* FPGA 5GNR FEC Ring Control Register */
+struct __attribute__((__packed__)) fpga_ring_ctrl_reg {
+ uint64_t ring_base_addr;
+ uint64_t ring_head_addr;
+ uint16_t ring_size:11;
+ uint16_t rsrvd0;
+ union { /* Miscellaneous register */
+ uint8_t misc;
+ uint8_t max_ul_dec:5,
+ max_ul_dec_en:1,
+ rsrvd1:2;
+ };
+ uint8_t enable;
+ uint8_t flush_queue_en;
+ uint8_t rsrvd2;
+ uint16_t shadow_tail;
+ uint16_t rsrvd3;
+ uint16_t head_point;
+ uint16_t rsrvd4;
+
+};
+
+/* Private data structure for each FPGA FEC device */
+struct fpga_5gnr_fec_device {
+ /** Base address of MMIO registers (BAR0) */
+ void *mmio_base;
+ /** Base address of memory for sw rings */
+ void *sw_rings;
+ /** Physical address of sw_rings */
+ rte_iova_t sw_rings_phys;
+ /** Number of bytes available for each queue in device. */
+ uint32_t sw_ring_size;
+ /** Max number of entries available for each queue in device */
+ uint32_t sw_ring_max_depth;
+ /** Base address of response tail pointer buffer */
+ uint32_t *tail_ptrs;
+ /** Physical address of tail pointers */
+ rte_iova_t tail_ptr_phys;
+ /** Queues flush completion flag */
+ uint64_t *flush_queue_status;
+ /* Bitmap capturing which Queues are bound to the PF/VF */
+ uint64_t q_bound_bit_map;
+ /* Bitmap capturing which Queues have already been assigned */
+ uint64_t q_assigned_bit_map;
+ /** True if this is a PF FPGA FEC device */
+ bool pf_device;
+};
+
+/* Structure associated with each queue. */
+struct __rte_cache_aligned fpga_queue {
+ struct fpga_ring_ctrl_reg ring_ctrl_reg; /* Ring Control Register */
+ union fpga_dma_desc *ring_addr; /* Virtual address of software ring */
+ uint64_t *ring_head_addr; /* Virtual address of completion_head */
+ uint64_t shadow_completion_head; /* Shadow completion head value */
+ uint16_t head_free_desc; /* Ring head */
+ uint16_t tail; /* Ring tail */
+ /* Mask used to wrap enqueued descriptors on the sw ring */
+ uint32_t sw_ring_wrap_mask;
+ uint32_t irq_enable; /* Enable ops dequeue interrupts if set to 1 */
+ uint8_t q_idx; /* Queue index */
+ struct fpga_5gnr_fec_device *d;
+ /* MMIO register of shadow_tail used to enqueue descriptors */
+ void *shadow_tail_addr;
+};
+
+/* Write to 16 bit MMIO register address */
+static inline void
+mmio_write_16(void *addr, uint16_t value)
+{
+ *((volatile uint16_t *)(addr)) = rte_cpu_to_le_16(value);
+}
+
+/* Write to 32 bit MMIO register address */
+static inline void
+mmio_write_32(void *addr, uint32_t value)
+{
+ *((volatile uint32_t *)(addr)) = rte_cpu_to_le_32(value);
+}
+
+/* Write to 64 bit MMIO register address */
+static inline void
+mmio_write_64(void *addr, uint64_t value)
+{
+ *((volatile uint64_t *)(addr)) = rte_cpu_to_le_64(value);
+}
+
+/* Write a 8 bit register of a FPGA 5GNR FEC device */
+static inline void
+fpga_reg_write_8(void *mmio_base, uint32_t offset, uint8_t payload)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ *((volatile uint8_t *)(reg_addr)) = payload;
+}
+
+/* Write a 16 bit register of a FPGA 5GNR FEC device */
+static inline void
+fpga_reg_write_16(void *mmio_base, uint32_t offset, uint16_t payload)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ mmio_write_16(reg_addr, payload);
+}
+
+/* Write a 32 bit register of a FPGA 5GNR FEC device */
+static inline void
+fpga_reg_write_32(void *mmio_base, uint32_t offset, uint32_t payload)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ mmio_write_32(reg_addr, payload);
+}
+
+/* Write a 64 bit register of a FPGA 5GNR FEC device */
+static inline void
+fpga_reg_write_64(void *mmio_base, uint32_t offset, uint64_t payload)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ mmio_write_64(reg_addr, payload);
+}
+
+/* Write a ring control register of a FPGA 5GNR FEC device */
+static inline void
+fpga_ring_reg_write(void *mmio_base, uint32_t offset,
+ struct fpga_ring_ctrl_reg payload)
+{
+ fpga_reg_write_64(mmio_base, offset, payload.ring_base_addr);
+ fpga_reg_write_64(mmio_base, offset + FPGA_5GNR_FEC_RING_HEAD_ADDR,
+ payload.ring_head_addr);
+ fpga_reg_write_16(mmio_base, offset + FPGA_5GNR_FEC_RING_SIZE,
+ payload.ring_size);
+ fpga_reg_write_16(mmio_base, offset + FPGA_5GNR_FEC_RING_HEAD_POINT,
+ payload.head_point);
+ fpga_reg_write_8(mmio_base, offset + FPGA_5GNR_FEC_RING_FLUSH_QUEUE_EN,
+ payload.flush_queue_en);
+ fpga_reg_write_16(mmio_base, offset + FPGA_5GNR_FEC_RING_SHADOW_TAIL,
+ payload.shadow_tail);
+ fpga_reg_write_8(mmio_base, offset + FPGA_5GNR_FEC_RING_MISC,
+ payload.misc);
+ fpga_reg_write_8(mmio_base, offset + FPGA_5GNR_FEC_RING_ENABLE,
+ payload.enable);
+}
+
+/* Read a register of FPGA 5GNR FEC device */
+static uint32_t
+fpga_reg_read_32(void *mmio_base, uint32_t offset)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ uint32_t ret = *((volatile uint32_t *)(reg_addr));
+ return rte_le_to_cpu_32(ret);
+}
+
+/* Read a register of FPGA 5GNR FEC device */
+static uint8_t
+fpga_reg_read_8(void *mmio_base, uint32_t offset)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ return *((volatile uint8_t *)(reg_addr));
+}
+
+/* Read a register of FPGA 5GNR FEC device */
+static uint64_t
+fpga_reg_read_64(void *mmio_base, uint32_t offset)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ uint64_t ret = *((volatile uint64_t *)(reg_addr));
+ return rte_le_to_cpu_64(ret);
+}
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+
+/* Read a register of FPGA 5GNR FEC device */
+static uint16_t
+fpga_reg_read_16(void *mmio_base, uint32_t offset)
+{
+ void *reg_addr = RTE_PTR_ADD(mmio_base, offset);
+ uint16_t ret = *((volatile uint16_t *)(reg_addr));
+ return rte_le_to_cpu_16(ret);
+}
+
+/* Read Ring Control Register of FPGA 5GNR FEC device */
+static inline void
+print_ring_reg_debug_info(void *mmio_base, uint32_t offset)
+{
+ rte_bbdev_log_debug(
+ "FPGA MMIO base address @ %p | Ring Control Register @ offset =
0x%08"
+ PRIx32, mmio_base, offset);
+ rte_bbdev_log_debug(
+ "RING_BASE_ADDR = 0x%016"PRIx64,
+ fpga_reg_read_64(mmio_base, offset));
+ rte_bbdev_log_debug(
+ "RING_HEAD_ADDR = 0x%016"PRIx64,
+ fpga_reg_read_64(mmio_base, offset +
+ FPGA_5GNR_FEC_RING_HEAD_ADDR));
+ rte_bbdev_log_debug(
+ "RING_SIZE = 0x%04"PRIx16,
+ fpga_reg_read_16(mmio_base, offset +
+ FPGA_5GNR_FEC_RING_SIZE));
+ rte_bbdev_log_debug(
+ "RING_MISC = 0x%02"PRIx8,
+ fpga_reg_read_8(mmio_base, offset +
+ FPGA_5GNR_FEC_RING_MISC));
+ rte_bbdev_log_debug(
+ "RING_ENABLE = 0x%02"PRIx8,
+ fpga_reg_read_8(mmio_base, offset +
+ FPGA_5GNR_FEC_RING_ENABLE));
+ rte_bbdev_log_debug(
+ "RING_FLUSH_QUEUE_EN = 0x%02"PRIx8,
+ fpga_reg_read_8(mmio_base, offset +
+ FPGA_5GNR_FEC_RING_FLUSH_QUEUE_EN));
+ rte_bbdev_log_debug(
+ "RING_SHADOW_TAIL = 0x%04"PRIx16,
+ fpga_reg_read_16(mmio_base, offset +
+ FPGA_5GNR_FEC_RING_SHADOW_TAIL));
+ rte_bbdev_log_debug(
+ "RING_HEAD_POINT = 0x%04"PRIx16,
+ fpga_reg_read_16(mmio_base, offset +
+ FPGA_5GNR_FEC_RING_HEAD_POINT));
+}
+
+/* Read Static Register of FPGA 5GNR FEC device */
+static inline void
+print_static_reg_debug_info(void *mmio_base)
+{
+ uint16_t config = fpga_reg_read_16(mmio_base,
+ FPGA_5GNR_FEC_CONFIGURATION);
+ uint8_t qmap_done = fpga_reg_read_8(mmio_base,
+ FPGA_5GNR_FEC_QUEUE_PF_VF_MAP_DONE);
+ uint16_t lb_factor = fpga_reg_read_16(mmio_base,
+ FPGA_5GNR_FEC_LOAD_BALANCE_FACTOR);
+ uint16_t ring_desc_len = fpga_reg_read_16(mmio_base,
+ FPGA_5GNR_FEC_RING_DESC_LEN);
+ uint16_t flr_time_out = fpga_reg_read_16(mmio_base,
+ FPGA_5GNR_FEC_FLR_TIME_OUT);
+
+ rte_bbdev_log_debug("UL.DL Weights = %u.%u",
+ ((uint8_t)config), ((uint8_t)(config >> 8)));
+ rte_bbdev_log_debug("UL.DL Load Balance = %u.%u",
+ ((uint8_t)lb_factor), ((uint8_t)(lb_factor >> 8)));
+ rte_bbdev_log_debug("Queue-PF/VF Mapping Table = %s",
+ (qmap_done > 0) ? "READY" : "NOT-READY");
+ rte_bbdev_log_debug("Ring Descriptor Size = %u bytes",
+ ring_desc_len*FPGA_RING_DESC_LEN_UNIT_BYTES);
+ rte_bbdev_log_debug("FLR Timeout = %f usec",
+ (float)flr_time_out*FPGA_FLR_TIMEOUT_UNIT);
+}
+
+/* Print decode DMA Descriptor of FPGA 5GNR Decoder device */
+static void
+print_dma_dec_desc_debug_info(union fpga_dma_desc *desc)
+{
+ rte_bbdev_log_debug("DMA response desc %p\n"
+ "\t-- done(%"PRIu32") | iter(%"PRIu32") | et_pass(%"PRIu32")"
+ " | crcb_pass (%"PRIu32") | error(%"PRIu32")\n"
+ "\t-- qm_idx(%"PRIu32") | max_iter(%"PRIu32") | "
+ "bg_idx (%"PRIu32") | harqin_en(%"PRIu32") | zc(%"PRIu32")\n"
+ "\t-- hbstroe_offset(%"PRIu32") | num_null (%"PRIu32") "
+ "| irq_en(%"PRIu32")\n"
+ "\t-- ncb(%"PRIu32") | desc_idx (%"PRIu32") | "
+ "drop_crc24b(%"PRIu32") | RV (%"PRIu32")\n"
+ "\t-- crc24b_ind(%"PRIu32") | et_dis (%"PRIu32")\n"
+ "\t-- harq_input_length(%"PRIu32") | rm_e(%"PRIu32")\n"
+ "\t-- cbs_in_op(%"PRIu32") | in_add (0x%08"PRIx32"%08"PRIx32")"
+ "| out_add (0x%08"PRIx32"%08"PRIx32")",
+ desc,
+ (uint32_t)desc->dec_req.done,
+ (uint32_t)desc->dec_req.iter,
+ (uint32_t)desc->dec_req.et_pass,
+ (uint32_t)desc->dec_req.crcb_pass,
+ (uint32_t)desc->dec_req.error,
+ (uint32_t)desc->dec_req.qm_idx,
+ (uint32_t)desc->dec_req.max_iter,
+ (uint32_t)desc->dec_req.bg_idx,
+ (uint32_t)desc->dec_req.harqin_en,
+ (uint32_t)desc->dec_req.zc,
+ (uint32_t)desc->dec_req.hbstroe_offset,
+ (uint32_t)desc->dec_req.num_null,
+ (uint32_t)desc->dec_req.irq_en,
+ (uint32_t)desc->dec_req.ncb,
+ (uint32_t)desc->dec_req.desc_idx,
+ (uint32_t)desc->dec_req.drop_crc24b,
+ (uint32_t)desc->dec_req.rv,
+ (uint32_t)desc->dec_req.crc24b_ind,
+ (uint32_t)desc->dec_req.et_dis,
+ (uint32_t)desc->dec_req.harq_input_length,
+ (uint32_t)desc->dec_req.rm_e,
+ (uint32_t)desc->dec_req.cbs_in_op,
+ (uint32_t)desc->dec_req.in_addr_hi,
+ (uint32_t)desc->dec_req.in_addr_lw,
+ (uint32_t)desc->dec_req.out_addr_hi,
+ (uint32_t)desc->dec_req.out_addr_lw);
+ uint32_t *word = (uint32_t *) desc;
+
rte_bbdev_log_debug("%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n"
+ "%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n",
+ word[0], word[1], word[2], word[3],
+ word[4], word[5], word[6], word[7]);
+}
+
+/* Print decode DMA Descriptor of FPGA 5GNR encoder device */
+static void
+print_dma_enc_desc_debug_info(union fpga_dma_desc *desc)
+{
+ rte_bbdev_log_debug("DMA response desc %p\n"
+ "%"PRIu32" %"PRIu32"\n"
+ "K' %"PRIu32" E %"PRIu32" desc %"PRIu32" Z %"PRIu32"\n"
+ "BG %"PRIu32" Qm %"PRIu32" CRC %"PRIu32" IRQ
%"PRIu32"\n"
+ "k0 %"PRIu32" Ncb %"PRIu32" F %"PRIu32"\n",
+ desc,
+ (uint32_t)desc->enc_req.done,
+ (uint32_t)desc->enc_req.error,
+
+ (uint32_t)desc->enc_req.k_,
+ (uint32_t)desc->enc_req.rm_e,
+ (uint32_t)desc->enc_req.desc_idx,
+ (uint32_t)desc->enc_req.zc,
+
+ (uint32_t)desc->enc_req.bg_idx,
+ (uint32_t)desc->enc_req.qm_idx,
+ (uint32_t)desc->enc_req.crc_en,
+ (uint32_t)desc->enc_req.irq_en,
+
+ (uint32_t)desc->enc_req.k0,
+ (uint32_t)desc->enc_req.ncb,
+ (uint32_t)desc->enc_req.num_null);
+ uint32_t *word = (uint32_t *) desc;
+
rte_bbdev_log_debug("%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n"
+ "%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n%08"PRIx32"\n",
+ word[0], word[1], word[2], word[3],
+ word[4], word[5], word[6], word[7]);
+}
+
+#endif
+
+static int
+fpga_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id)
+{
+ /* Number of queues bound to a PF/VF */
+ uint32_t hw_q_num = 0;
+ uint32_t ring_size, payload, address, q_id, offset;
+ rte_iova_t phys_addr;
+ struct fpga_ring_ctrl_reg ring_reg;
+ struct fpga_5gnr_fec_device *fpga_dev = dev->data->dev_private;
+
+ address = FPGA_5GNR_FEC_QUEUE_PF_VF_MAP_DONE;
+ if (!(fpga_reg_read_32(fpga_dev->mmio_base, address) & 0x1)) {
+ rte_bbdev_log(ERR,
+ "Queue-PF/VF mapping is not set! Was PF configured
for device (%s) ?",
+ dev->data->name);
+ return -EPERM;
+ }
+
+ /* Clear queue registers structure */
+ memset(&ring_reg, 0, sizeof(struct fpga_ring_ctrl_reg));
+
+ /* Scan queue map.
+ * If a queue is valid and mapped to a calling PF/VF the read value is
+ * replaced with a queue ID and if it's not then
+ * FPGA_INVALID_HW_QUEUE_ID is returned.
+ */
+ for (q_id = 0; q_id < FPGA_TOTAL_NUM_QUEUES; ++q_id) {
+ uint32_t hw_q_id = fpga_reg_read_32(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_QUEUE_MAP + (q_id << 2));
+
+ rte_bbdev_log_debug("%s: queue ID: %u, registry queue ID: %u",
+ dev->device->name, q_id, hw_q_id);
+
+ if (hw_q_id != FPGA_INVALID_HW_QUEUE_ID) {
+ fpga_dev->q_bound_bit_map |= (1ULL << q_id);
+ /* Clear queue register of found queue */
+ offset = FPGA_5GNR_FEC_RING_CTRL_REGS +
+ (sizeof(struct fpga_ring_ctrl_reg) * q_id);
+ fpga_ring_reg_write(fpga_dev->mmio_base,
+ offset, ring_reg);
+ ++hw_q_num;
+ }
+ }
+ if (hw_q_num == 0) {
+ rte_bbdev_log(ERR,
+ "No HW queues assigned to this device. Probably this is a VF
configured for PF mode. Check device configuration!");
+ return -ENODEV;
+ }
+
+ if (num_queues > hw_q_num) {
+ rte_bbdev_log(ERR,
+ "Not enough queues for device %s! Requested: %u, available:
%u",
+ dev->device->name, num_queues, hw_q_num);
+ return -EINVAL;
+ }
+
+ ring_size = FPGA_RING_MAX_SIZE * sizeof(struct fpga_dma_dec_desc);
+
+ /* Enforce 32 byte alignment */
+ RTE_BUILD_BUG_ON((RTE_CACHE_LINE_SIZE % 32) != 0);
+
+ /* Allocate memory for SW descriptor rings */
+ fpga_dev->sw_rings = rte_zmalloc_socket(dev->device->driver->name,
+ num_queues * ring_size, RTE_CACHE_LINE_SIZE,
+ socket_id);
+ if (fpga_dev->sw_rings == NULL) {
+ rte_bbdev_log(ERR,
+ "Failed to allocate memory for %s:%u sw_rings",
+ dev->device->driver->name, dev->data->dev_id);
+ return -ENOMEM;
+ }
+
+ fpga_dev->sw_rings_phys = rte_malloc_virt2iova(fpga_dev->sw_rings);
+ fpga_dev->sw_ring_size = ring_size;
+ fpga_dev->sw_ring_max_depth = FPGA_RING_MAX_SIZE;
+
+ /* Allocate memory for ring flush status */
+ fpga_dev->flush_queue_status = rte_zmalloc_socket(NULL,
+ sizeof(uint64_t), RTE_CACHE_LINE_SIZE, socket_id);
+ if (fpga_dev->flush_queue_status == NULL) {
+ rte_bbdev_log(ERR,
+ "Failed to allocate memory for %s:%u
flush_queue_status",
+ dev->device->driver->name, dev->data->dev_id);
+ return -ENOMEM;
+ }
+
+ /* Set the flush status address registers */
+ phys_addr = rte_malloc_virt2iova(fpga_dev->flush_queue_status);
+
+ address = FPGA_5GNR_FEC_VFQ_FLUSH_STATUS_LW;
+ payload = (uint32_t)(phys_addr);
+ fpga_reg_write_32(fpga_dev->mmio_base, address, payload);
+
+ address = FPGA_5GNR_FEC_VFQ_FLUSH_STATUS_HI;
+ payload = (uint32_t)(phys_addr >> 32);
+ fpga_reg_write_32(fpga_dev->mmio_base, address, payload);
+
+ return 0;
+}
+
+static int
+fpga_dev_close(struct rte_bbdev *dev)
+{
+ struct fpga_5gnr_fec_device *fpga_dev = dev->data->dev_private;
+
+ rte_free(fpga_dev->sw_rings);
+ rte_free(fpga_dev->flush_queue_status);
+
+ return 0;
+}
+
+static void
+fpga_dev_info_get(struct rte_bbdev *dev,
+ struct rte_bbdev_driver_info *dev_info)
+{
+ struct fpga_5gnr_fec_device *d = dev->data->dev_private;
+ uint32_t q_id = 0;
+
+ static const struct rte_bbdev_op_cap bbdev_capabilities[] = {
+ {
+ .type = RTE_BBDEV_OP_LDPC_ENC,
+ .cap.ldpc_enc = {
+ .capability_flags =
+ RTE_BBDEV_LDPC_RATE_MATCH |
+ RTE_BBDEV_LDPC_ENC_INTERRUPTS |
+ RTE_BBDEV_LDPC_CRC_24B_ATTACH,
+ .num_buffers_src =
+ RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
+ .num_buffers_dst =
+ RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
+ }
+ },
+ {
+ .type = RTE_BBDEV_OP_LDPC_DEC,
+ .cap.ldpc_dec = {
+ .capability_flags =
+ RTE_BBDEV_LDPC_CRC_TYPE_24B_CHECK |
+ RTE_BBDEV_LDPC_CRC_TYPE_24B_DROP |
+ RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE |
+ RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE |
+ RTE_BBDEV_LDPC_ITERATION_STOP_ENABLE |
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_IN_ENABLE |
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_OUT_ENABLE |
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_LOOPBACK |
+ RTE_BBDEV_LDPC_DEC_INTERRUPTS |
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_FILLERS,
+ .llr_size = 6,
+ .llr_decimals = 2,
+ .num_buffers_src =
+ RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
+ .num_buffers_hard_out =
+ RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
+ .num_buffers_soft_out = 0,
+ }
+ },
+ RTE_BBDEV_END_OF_CAPABILITIES_LIST()
+ };
+
+ /* Check the HARQ DDR size available */
+ uint8_t timeout_counter = 0;
+ uint32_t harq_buf_ready = fpga_reg_read_32(d->mmio_base,
+ FPGA_5GNR_FEC_HARQ_BUF_SIZE_RDY_REGS);
+ while (harq_buf_ready != 1) {
+ usleep(FPGA_TIMEOUT_CHECK_INTERVAL);
+ timeout_counter++;
+ harq_buf_ready = fpga_reg_read_32(d->mmio_base,
+ FPGA_5GNR_FEC_HARQ_BUF_SIZE_RDY_REGS);
+ if (timeout_counter > FPGA_HARQ_RDY_TIMEOUT) {
+ rte_bbdev_log(ERR, "HARQ Buffer not ready %d",
+ harq_buf_ready);
+ harq_buf_ready = 1;
+ }
+ }
+ uint32_t harq_buf_size = fpga_reg_read_32(d->mmio_base,
+ FPGA_5GNR_FEC_HARQ_BUF_SIZE_REGS);
+
+ static struct rte_bbdev_queue_conf default_queue_conf;
+ default_queue_conf.socket = dev->data->socket_id;
+ default_queue_conf.queue_size = FPGA_RING_MAX_SIZE;
+
+ dev_info->driver_name = dev->device->driver->name;
+ dev_info->queue_size_lim = FPGA_RING_MAX_SIZE;
+ dev_info->hardware_accelerated = true;
+ dev_info->min_alignment = 64;
+ dev_info->harq_buffer_size = (harq_buf_size >> 10) + 1;
+ dev_info->default_queue_conf = default_queue_conf;
+ dev_info->capabilities = bbdev_capabilities;
+ dev_info->cpu_flag_reqs = NULL;
+
+ /* Calculates number of queues assigned to device */
+ dev_info->max_num_queues = 0;
+ for (q_id = 0; q_id < FPGA_TOTAL_NUM_QUEUES; ++q_id) {
+ uint32_t hw_q_id = fpga_reg_read_32(d->mmio_base,
+ FPGA_5GNR_FEC_QUEUE_MAP + (q_id << 2));
+ if (hw_q_id != FPGA_INVALID_HW_QUEUE_ID)
+ dev_info->max_num_queues++;
+ }
+}
+
+/**
+ * Find index of queue bound to current PF/VF which is unassigned. Return -1
+ * when there is no available queue
+ */
+static int
+fpga_find_free_queue_idx(struct rte_bbdev *dev,
+ const struct rte_bbdev_queue_conf *conf)
+{
+ struct fpga_5gnr_fec_device *d = dev->data->dev_private;
+ uint64_t q_idx;
+ uint8_t i = 0;
+ uint8_t range = FPGA_TOTAL_NUM_QUEUES >> 1;
+
+ if (conf->op_type == RTE_BBDEV_OP_LDPC_ENC) {
+ i = FPGA_NUM_DL_QUEUES;
+ range = FPGA_TOTAL_NUM_QUEUES;
+ }
+
+ for (; i < range; ++i) {
+ q_idx = 1ULL << i;
+ /* Check if index of queue is bound to current PF/VF */
+ if (d->q_bound_bit_map & q_idx)
+ /* Check if found queue was not already assigned */
+ if (!(d->q_assigned_bit_map & q_idx)) {
+ d->q_assigned_bit_map |= q_idx;
+ return i;
+ }
+ }
+
+ rte_bbdev_log(INFO, "Failed to find free queue on %s", dev->data->name);
+
+ return -1;
+}
+
+static int
+fpga_queue_setup(struct rte_bbdev *dev, uint16_t queue_id,
+ const struct rte_bbdev_queue_conf *conf)
+{
+ uint32_t address, ring_offset;
+ struct fpga_5gnr_fec_device *d = dev->data->dev_private;
+ struct fpga_queue *q;
+ int8_t q_idx;
+
+ /* Check if there is a free queue to assign */
+ q_idx = fpga_find_free_queue_idx(dev, conf);
+ if (q_idx == -1)
+ return -1;
+
+ /* Allocate the queue data structure. */
+ q = rte_zmalloc_socket(dev->device->driver->name, sizeof(*q),
+ RTE_CACHE_LINE_SIZE, conf->socket);
+ if (q == NULL) {
+ /* Mark queue as un-assigned */
+ d->q_assigned_bit_map &= (0xFFFFFFFF - (1ULL << q_idx));
+ rte_bbdev_log(ERR, "Failed to allocate queue memory");
+ return -ENOMEM;
+ }
+
+ q->d = d;
+ q->q_idx = q_idx;
+
+ /* Set ring_base_addr */
+ q->ring_addr = RTE_PTR_ADD(d->sw_rings, (d->sw_ring_size * queue_id));
+ q->ring_ctrl_reg.ring_base_addr = d->sw_rings_phys +
+ (d->sw_ring_size * queue_id);
+
+ /* Allocate memory for Completion Head variable*/
+ q->ring_head_addr = rte_zmalloc_socket(dev->device->driver->name,
+ sizeof(uint64_t), RTE_CACHE_LINE_SIZE, conf->socket);
+ if (q->ring_head_addr == NULL) {
+ /* Mark queue as un-assigned */
+ d->q_assigned_bit_map &= (0xFFFFFFFF - (1ULL << q_idx));
+ rte_free(q);
+ rte_bbdev_log(ERR,
+ "Failed to allocate memory for %s:%u
completion_head",
+ dev->device->driver->name, dev->data->dev_id);
+ return -ENOMEM;
+ }
+ /* Set ring_head_addr */
+ q->ring_ctrl_reg.ring_head_addr =
+ rte_malloc_virt2iova(q->ring_head_addr);
+
+ /* Clear shadow_completion_head */
+ q->shadow_completion_head = 0;
+
+ /* Set ring_size */
+ if (conf->queue_size > FPGA_RING_MAX_SIZE) {
+ /* Mark queue as un-assigned */
+ d->q_assigned_bit_map &= (0xFFFFFFFF - (1ULL << q_idx));
+ rte_free(q->ring_head_addr);
+ rte_free(q);
+ rte_bbdev_log(ERR,
+ "Size of queue is too big %d (MAX: %d ) for
%s:%u",
+ conf->queue_size, FPGA_RING_MAX_SIZE,
+ dev->device->driver->name, dev->data->dev_id);
+ return -EINVAL;
+ }
+ q->ring_ctrl_reg.ring_size = conf->queue_size;
+
+ /* Set Miscellaneous FPGA register*/
+ /* Max iteration number for TTI mitigation - todo */
+ q->ring_ctrl_reg.max_ul_dec = 0;
+ /* Enable max iteration number for TTI - todo */
+ q->ring_ctrl_reg.max_ul_dec_en = 0;
+
+ /* Enable the ring */
+ q->ring_ctrl_reg.enable = 1;
+
+ /* Set FPGA head_point and tail registers */
+ q->ring_ctrl_reg.head_point = q->tail = 0;
+
+ /* Set FPGA shadow_tail register */
+ q->ring_ctrl_reg.shadow_tail = q->tail;
+
+ /* Calculates the ring offset for found queue */
+ ring_offset = FPGA_5GNR_FEC_RING_CTRL_REGS +
+ (sizeof(struct fpga_ring_ctrl_reg) * q_idx);
+
+ /* Set FPGA Ring Control Registers */
+ fpga_ring_reg_write(d->mmio_base, ring_offset, q->ring_ctrl_reg);
+
+ /* Store MMIO register of shadow_tail */
+ address = ring_offset + FPGA_5GNR_FEC_RING_SHADOW_TAIL;
+ q->shadow_tail_addr = RTE_PTR_ADD(d->mmio_base, address);
+
+ q->head_free_desc = q->tail;
+
+ /* Set wrap mask */
+ q->sw_ring_wrap_mask = conf->queue_size - 1;
+
+ rte_bbdev_log_debug("Setup dev%u q%u: queue_idx=%u",
+ dev->data->dev_id, queue_id, q->q_idx);
+
+ dev->data->queues[queue_id].queue_private = q;
+
+ rte_bbdev_log_debug("BBDEV queue[%d] set up for FPGA queue[%d]",
+ queue_id, q_idx);
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ /* Read FPGA Ring Control Registers after configuration*/
+ print_ring_reg_debug_info(d->mmio_base, ring_offset);
+#endif
+ return 0;
+}
+
+static int
+fpga_queue_release(struct rte_bbdev *dev, uint16_t queue_id)
+{
+ struct fpga_5gnr_fec_device *d = dev->data->dev_private;
+ struct fpga_queue *q = dev->data->queues[queue_id].queue_private;
+ struct fpga_ring_ctrl_reg ring_reg;
+ uint32_t offset;
+
+ rte_bbdev_log_debug("FPGA Queue[%d] released", queue_id);
+
+ if (q != NULL) {
+ memset(&ring_reg, 0, sizeof(struct fpga_ring_ctrl_reg));
+ offset = FPGA_5GNR_FEC_RING_CTRL_REGS +
+ (sizeof(struct fpga_ring_ctrl_reg) * q->q_idx);
+ /* Disable queue */
+ fpga_reg_write_8(d->mmio_base,
+ offset + FPGA_5GNR_FEC_RING_ENABLE, 0x00);
+ /* Clear queue registers */
+ fpga_ring_reg_write(d->mmio_base, offset, ring_reg);
+
+ /* Mark the Queue as un-assigned */
+ d->q_assigned_bit_map &= (0xFFFFFFFF - (1ULL << q->q_idx));
+ rte_free(q->ring_head_addr);
+ rte_free(q);
+ dev->data->queues[queue_id].queue_private = NULL;
+ }
+
+ return 0;
+}
+
+/* Function starts a device queue. */
+static int
+fpga_queue_start(struct rte_bbdev *dev, uint16_t queue_id)
+{
+ struct fpga_5gnr_fec_device *d = dev->data->dev_private;
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ if (d == NULL) {
+ rte_bbdev_log(ERR, "Invalid device pointer");
+ return -1;
+ }
+#endif
+ struct fpga_queue *q = dev->data->queues[queue_id].queue_private;
+ uint32_t offset = FPGA_5GNR_FEC_RING_CTRL_REGS +
+ (sizeof(struct fpga_ring_ctrl_reg) * q->q_idx);
+ uint8_t enable = 0x01;
+ uint16_t zero = 0x0000;
+
+ /* Clear queue head and tail variables */
+ q->tail = q->head_free_desc = 0;
+
+ /* Clear FPGA head_point and tail registers */
+ fpga_reg_write_16(d->mmio_base, offset + FPGA_5GNR_FEC_RING_HEAD_POINT,
+ zero);
+ fpga_reg_write_16(d->mmio_base, offset + FPGA_5GNR_FEC_RING_SHADOW_TAIL,
+ zero);
+
+ /* Enable queue */
+ fpga_reg_write_8(d->mmio_base, offset + FPGA_5GNR_FEC_RING_ENABLE,
+ enable);
+
+ rte_bbdev_log_debug("FPGA Queue[%d] started", queue_id);
+ return 0;
+}
+
+/* Function stops a device queue. */
+static int
+fpga_queue_stop(struct rte_bbdev *dev, uint16_t queue_id)
+{
+ struct fpga_5gnr_fec_device *d = dev->data->dev_private;
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ if (d == NULL) {
+ rte_bbdev_log(ERR, "Invalid device pointer");
+ return -1;
+ }
+#endif
+ struct fpga_queue *q = dev->data->queues[queue_id].queue_private;
+ uint32_t offset = FPGA_5GNR_FEC_RING_CTRL_REGS +
+ (sizeof(struct fpga_ring_ctrl_reg) * q->q_idx);
+ uint8_t payload = 0x01;
+ uint8_t counter = 0;
+ uint8_t timeout = FPGA_QUEUE_FLUSH_TIMEOUT_US /
+ FPGA_TIMEOUT_CHECK_INTERVAL;
+
+ /* Set flush_queue_en bit to trigger queue flushing */
+ fpga_reg_write_8(d->mmio_base,
+ offset + FPGA_5GNR_FEC_RING_FLUSH_QUEUE_EN, payload);
+
+ /** Check if queue flush is completed.
+ * FPGA will update the completion flag after queue flushing is
+ * completed. If completion flag is not updated within 1ms it is
+ * considered as a failure.
+ */
+ while (!(*((volatile uint8_t *)d->flush_queue_status + q->q_idx)
+ & payload)) {
+ if (counter > timeout) {
+ rte_bbdev_log(ERR, "FPGA Queue Flush failed for queue
%d",
+ queue_id);
+ return -1;
+ }
+ usleep(FPGA_TIMEOUT_CHECK_INTERVAL);
+ counter++;
+ }
+
+ /* Disable queue */
+ payload = 0x00;
+ fpga_reg_write_8(d->mmio_base, offset + FPGA_5GNR_FEC_RING_ENABLE,
+ payload);
+
+ rte_bbdev_log_debug("FPGA Queue[%d] stopped", queue_id);
+ return 0;
+}
+
+static inline uint16_t
+get_queue_id(struct rte_bbdev_data *data, uint8_t q_idx)
+{
+ uint16_t queue_id;
+
+ for (queue_id = 0; queue_id < data->num_queues; ++queue_id) {
+ struct fpga_queue *q = data->queues[queue_id].queue_private;
+ if (q != NULL && q->q_idx == q_idx)
+ return queue_id;
+ }
+
+ return -1;
+}
+
+/* Interrupt handler triggered by FPGA dev for handling specific interrupt */
+static void
+fpga_dev_interrupt_handler(void *cb_arg)
+{
+ struct rte_bbdev *dev = cb_arg;
+ struct fpga_5gnr_fec_device *fpga_dev = dev->data->dev_private;
+ struct fpga_queue *q;
+ uint64_t ring_head;
+ uint64_t q_idx;
+ uint16_t queue_id;
+ uint8_t i;
+
+ /* Scan queue assigned to this device */
+ for (i = 0; i < FPGA_TOTAL_NUM_QUEUES; ++i) {
+ q_idx = 1ULL << i;
+ if (fpga_dev->q_bound_bit_map & q_idx) {
+ queue_id = get_queue_id(dev->data, i);
+ if (queue_id == (uint16_t) -1)
+ continue;
+
+ /* Check if completion head was changed */
+ q = dev->data->queues[queue_id].queue_private;
+ ring_head = *q->ring_head_addr;
+ if (q->shadow_completion_head != ring_head &&
+ q->irq_enable == 1) {
+ q->shadow_completion_head = ring_head;
+ rte_bbdev_pmd_callback_process(
+ dev,
+ RTE_BBDEV_EVENT_DEQUEUE,
+ &queue_id);
+ }
+ }
+ }
+}
+
+static int
+fpga_queue_intr_enable(struct rte_bbdev *dev, uint16_t queue_id)
+{
+ struct fpga_queue *q = dev->data->queues[queue_id].queue_private;
+
+ if (!rte_intr_cap_multiple(dev->intr_handle))
+ return -ENOTSUP;
+
+ q->irq_enable = 1;
+
+ return 0;
+}
+
+static int
+fpga_queue_intr_disable(struct rte_bbdev *dev, uint16_t queue_id)
+{
+ struct fpga_queue *q = dev->data->queues[queue_id].queue_private;
+ q->irq_enable = 0;
+
+ return 0;
+}
+
+static int
+fpga_intr_enable(struct rte_bbdev *dev)
+{
+ int ret;
+ uint8_t i;
+
+ if (!rte_intr_cap_multiple(dev->intr_handle)) {
+ rte_bbdev_log(ERR, "Multiple intr vector is not supported by FPGA
(%s)",
+ dev->data->name);
+ return -ENOTSUP;
+ }
+
+ /* Create event file descriptors for each of 64 queue. Event fds will be
+ * mapped to FPGA IRQs in rte_intr_enable(). This is a 1:1 mapping where
+ * the IRQ number is a direct translation to the queue number.
+ *
+ * 63 (FPGA_NUM_INTR_VEC) event fds are created as rte_intr_enable()
+ * mapped the first IRQ to already created interrupt event file
+ * descriptor (intr_handle->fd).
+ */
+ if (rte_intr_efd_enable(dev->intr_handle, FPGA_NUM_INTR_VEC)) {
+ rte_bbdev_log(ERR, "Failed to create fds for %u queues",
+ dev->data->num_queues);
+ return -1;
+ }
+
+ /* TODO Each event file descriptor is overwritten by interrupt event
+ * file descriptor. That descriptor is added to epoll observed list.
+ * It ensures that callback function assigned to that descriptor will
+ * invoked when any FPGA queue issues interrupt.
+ */
+ for (i = 0; i < FPGA_NUM_INTR_VEC; ++i)
+ dev->intr_handle->efds[i] = dev->intr_handle->fd;
+
+ if (!dev->intr_handle->intr_vec) {
+ dev->intr_handle->intr_vec = rte_zmalloc("intr_vec",
+ dev->data->num_queues * sizeof(int), 0);
+ if (!dev->intr_handle->intr_vec) {
+ rte_bbdev_log(ERR, "Failed to allocate %u vectors",
+ dev->data->num_queues);
+ return -ENOMEM;
+ }
+ }
+
+ ret = rte_intr_enable(dev->intr_handle);
+ if (ret < 0) {
+ rte_bbdev_log(ERR,
+ "Couldn't enable interrupts for device: %s",
+ dev->data->name);
+ return ret;
+ }
+
+ ret = rte_intr_callback_register(dev->intr_handle,
+ fpga_dev_interrupt_handler, dev);
+ if (ret < 0) {
+ rte_bbdev_log(ERR,
+ "Couldn't register interrupt callback for device:
%s",
+ dev->data->name);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct rte_bbdev_ops fpga_ops = {
+ .setup_queues = fpga_setup_queues,
+ .intr_enable = fpga_intr_enable,
+ .close = fpga_dev_close,
+ .info_get = fpga_dev_info_get,
+ .queue_setup = fpga_queue_setup,
+ .queue_stop = fpga_queue_stop,
+ .queue_start = fpga_queue_start,
+ .queue_release = fpga_queue_release,
+ .queue_intr_enable = fpga_queue_intr_enable,
+ .queue_intr_disable = fpga_queue_intr_disable
+};
+
+static inline void
+fpga_dma_enqueue(struct fpga_queue *q, uint16_t num_desc,
+ struct rte_bbdev_stats *queue_stats)
+{
+#ifdef RTE_BBDEV_OFFLOAD_COST
+ uint64_t start_time = 0;
+ queue_stats->acc_offload_cycles = 0;
+#else
+ RTE_SET_USED(queue_stats);
+#endif
+
+ /* Update tail and shadow_tail register */
+ q->tail = (q->tail + num_desc) & q->sw_ring_wrap_mask;
+
+ rte_wmb();
+
+#ifdef RTE_BBDEV_OFFLOAD_COST
+ /* Start time measurement for enqueue function offload. */
+ start_time = rte_rdtsc_precise();
+#endif
+ mmio_write_16(q->shadow_tail_addr, q->tail);
+
+#ifdef RTE_BBDEV_OFFLOAD_COST
+ rte_wmb();
+ queue_stats->acc_offload_cycles += rte_rdtsc_precise() - start_time;
+#endif
+}
+
+/* Read flag value 0/1/ from bitmap */
+static inline bool
+check_bit(uint32_t bitmap, uint32_t bitmask)
+{
+ return bitmap & bitmask;
+}
+
+/* Print an error if a descriptor error has occurred.
+ * Return 0 on success, 1 on failure
+ */
+static inline int
+check_desc_error(uint32_t error_code) {
+ switch (error_code) {
+ case DESC_ERR_NO_ERR:
+ return 0;
+ case DESC_ERR_K_P_OUT_OF_RANGE:
+ rte_bbdev_log(ERR, "Encode block size K' is out of range");
+ break;
+ case DESC_ERR_Z_C_NOT_LEGAL:
+ rte_bbdev_log(ERR, "Zc is illegal");
+ break;
+ case DESC_ERR_DESC_OFFSET_ERR:
+ rte_bbdev_log(ERR,
+ "Queue offset does not meet the expectation in the
FPGA"
+ );
+ break;
+ case DESC_ERR_DESC_READ_FAIL:
+ rte_bbdev_log(ERR, "Unsuccessful completion for descriptor
read");
+ break;
+ case DESC_ERR_DESC_READ_TIMEOUT:
+ rte_bbdev_log(ERR, "Descriptor read time-out");
+ break;
+ case DESC_ERR_DESC_READ_TLP_POISONED:
+ rte_bbdev_log(ERR, "Descriptor read TLP poisoned");
+ break;
+ case DESC_ERR_CB_READ_FAIL:
+ rte_bbdev_log(ERR, "Unsuccessful completion for code block");
+ break;
+ case DESC_ERR_CB_READ_TIMEOUT:
+ rte_bbdev_log(ERR, "Code block read time-out");
+ break;
+ case DESC_ERR_CB_READ_TLP_POISONED:
+ rte_bbdev_log(ERR, "Code block read TLP poisoned");
+ break;
+ case DESC_ERR_HBSTORE_ERR:
+ rte_bbdev_log(ERR, "Hbstroe exceeds HARQ buffer size.");
+ break;
+ default:
+ rte_bbdev_log(ERR, "Descriptor error unknown error code %u",
+ error_code);
+ break;
+ }
+ return 1;
+}
+
+/* Compute value of k0.
+ * Based on 3GPP 38.212 Table 5.4.2.1-2
+ * Starting position of different redundancy versions, k0
+ */
+static inline uint16_t
+get_k0(uint16_t n_cb, uint16_t z_c, uint8_t basegraph, uint8_t rv_index)
+{
+ if (rv_index == 0)
+ return 0;
+ uint16_t n = (basegraph == 1 ? 66 : 50) * z_c;
+ if (n_cb == n) {
+ if (rv_index == 1)
+ return (basegraph == 1 ? 17 : 13) * z_c;
+ else if (rv_index == 2)
+ return (basegraph == 1 ? 33 : 25) * z_c;
+ else
+ return (basegraph == 1 ? 56 : 43) * z_c;
+ } else {
+ /* LBRM case - includes a division by N */
+ if (rv_index == 1)
+ return (((basegraph == 1 ? 17 : 13) * n_cb)
+ / n) * z_c;
+ else if (rv_index == 2)
+ return (((basegraph == 1 ? 33 : 25) * n_cb)
+ / n) * z_c;
+ else
+ return (((basegraph == 1 ? 56 : 43) * n_cb)
+ / n) * z_c;
+ }
+}
+
+
+/**
+ * Set DMA descriptor for encode operation (1 Code Block)
+ *
+ * @param op
+ * Pointer to a single encode operation.
+ * @param desc
+ * Pointer to DMA descriptor.
+ * @param input
+ * Pointer to pointer to input data which will be decoded.
+ * @param e
+ * E value (length of output in bits).
+ * @param ncb
+ * Ncb value (size of the soft buffer).
+ * @param out_length
+ * Length of output buffer
+ * @param in_offset
+ * Input offset in rte_mbuf structure. It is used for calculating the point
+ * where data is starting.
+ * @param out_offset
+ * Output offset in rte_mbuf structure. It is used for calculating the point
+ * where hard output data will be stored.
+ * @param cbs_in_op
+ * Number of CBs contained in one operation.
+ */
+static inline int
+fpga_dma_desc_te_fill(struct rte_bbdev_enc_op *op,
+ struct fpga_dma_enc_desc *desc, struct rte_mbuf *input,
+ struct rte_mbuf *output, uint16_t k_, uint16_t e,
+ uint32_t in_offset, uint32_t out_offset, uint16_t desc_offset,
+ uint8_t cbs_in_op)
+{
+ /* reset */
+ desc->done = 0;
+ desc->error = 0;
+ desc->k_ = k_;
+ desc->rm_e = e;
+ desc->desc_idx = desc_offset;
+ desc->zc = op->ldpc_enc.z_c;
+ desc->bg_idx = op->ldpc_enc.basegraph - 1;
+ desc->qm_idx = op->ldpc_enc.q_m / 2;
+ desc->crc_en = check_bit(op->ldpc_enc.op_flags,
+ RTE_BBDEV_LDPC_CRC_24B_ATTACH);
+ desc->irq_en = 0;
+ desc->k0 = get_k0(op->ldpc_enc.n_cb, op->ldpc_enc.z_c,
+ op->ldpc_enc.basegraph, op->ldpc_enc.rv_index);
+ desc->ncb = op->ldpc_enc.n_cb;
+ desc->num_null = op->ldpc_enc.n_filler;
+ /* Set inbound data buffer address */
+ desc->in_addr_hi = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(input, in_offset) >> 32);
+ desc->in_addr_lw = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(input, in_offset));
+
+ desc->out_addr_hi = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(output, out_offset) >> 32);
+ desc->out_addr_lw = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(output, out_offset));
+ /* Save software context needed for dequeue */
+ desc->op_addr = op;
+ /* Set total number of CBs in an op */
+ desc->cbs_in_op = cbs_in_op;
+ return 0;
+}
+
+/**
+ * Set DMA descriptor for decode operation (1 Code Block)
+ *
+ * @param op
+ * Pointer to a single encode operation.
+ * @param desc
+ * Pointer to DMA descriptor.
+ * @param input
+ * Pointer to pointer to input data which will be decoded.
+ * @param in_offset
+ * Input offset in rte_mbuf structure. It is used for calculating the point
+ * where data is starting.
+ * @param out_offset
+ * Output offset in rte_mbuf structure. It is used for calculating the point
+ * where hard output data will be stored.
+ * @param cbs_in_op
+ * Number of CBs contained in one operation.
+ */
+static inline int
+fpga_dma_desc_ld_fill(struct rte_bbdev_dec_op *op,
+ struct fpga_dma_dec_desc *desc,
+ struct rte_mbuf *input, struct rte_mbuf *output,
+ uint16_t harq_in_length,
+ uint32_t in_offset, uint32_t out_offset,
+ uint32_t harq_offset,
+ uint16_t desc_offset,
+ uint8_t cbs_in_op)
+{
+ /* reset */
+ desc->done = 0;
+ desc->error = 0;
+ /* Set inbound data buffer address */
+ desc->in_addr_hi = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(input, in_offset) >> 32);
+ desc->in_addr_lw = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(input, in_offset));
+ desc->rm_e = op->ldpc_dec.cb_params.e;
+ desc->harq_input_length = harq_in_length;
+ desc->et_dis = !check_bit(op->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_ITERATION_STOP_ENABLE);
+ desc->rv = op->ldpc_dec.rv_index;
+ desc->crc24b_ind = check_bit(op->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_CRC_TYPE_24B_CHECK);
+ desc->drop_crc24b = check_bit(op->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_CRC_TYPE_24B_DROP);
+ desc->desc_idx = desc_offset;
+ desc->ncb = op->ldpc_dec.n_cb;
+ desc->num_null = op->ldpc_dec.n_filler;
+ desc->hbstroe_offset = harq_offset >> 10;
+ desc->zc = op->ldpc_dec.z_c;
+ desc->harqin_en = check_bit(op->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE);
+ desc->bg_idx = op->ldpc_dec.basegraph - 1;
+ desc->max_iter = op->ldpc_dec.iter_max;
+ desc->qm_idx = op->ldpc_dec.q_m / 2;
+ desc->out_addr_hi = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(output, out_offset) >> 32);
+ desc->out_addr_lw = (uint32_t)(
+ rte_pktmbuf_mtophys_offset(output, out_offset));
+ /* Save software context needed for dequeue */
+ desc->op_addr = op;
+ /* Set total number of CBs in an op */
+ desc->cbs_in_op = cbs_in_op;
+
+ return 0;
+}
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+/* Validates LDPC encoder parameters */
+static int
+validate_enc_op(struct rte_bbdev_enc_op *op __rte_unused)
+{
+ struct rte_bbdev_op_ldpc_enc *ldpc_enc = &op->ldpc_enc;
+ struct rte_bbdev_op_enc_ldpc_cb_params *cb = NULL;
+ struct rte_bbdev_op_enc_ldpc_tb_params *tb = NULL;
+
+
+ if (ldpc_enc->input.length >
+ RTE_BBDEV_LDPC_MAX_CB_SIZE >> 3) {
+ rte_bbdev_log(ERR, "CB size (%u) is too big, max: %d",
+ ldpc_enc->input.length,
+ RTE_BBDEV_LDPC_MAX_CB_SIZE);
+ return -1;
+ }
+
+ if (op->mempool == NULL) {
+ rte_bbdev_log(ERR, "Invalid mempool pointer");
+ return -1;
+ }
+ if (ldpc_enc->input.data == NULL) {
+ rte_bbdev_log(ERR, "Invalid input pointer");
+ return -1;
+ }
+ if (ldpc_enc->output.data == NULL) {
+ rte_bbdev_log(ERR, "Invalid output pointer");
+ return -1;
+ }
+ if ((ldpc_enc->basegraph > 2) || (ldpc_enc->basegraph == 0)) {
+ rte_bbdev_log(ERR,
+ "basegraph (%u) is out of range 1 <= value <=
2",
+ ldpc_enc->basegraph);
+ return -1;
+ }
+ if (ldpc_enc->code_block_mode > 1) {
+ rte_bbdev_log(ERR,
+ "code_block_mode (%u) is out of range 0:Tb
1:CB",
+ ldpc_enc->code_block_mode);
+ return -1;
+ }
+
+ if (ldpc_enc->code_block_mode == 0) {
+ tb = &ldpc_enc->tb_params;
+ if (tb->c == 0) {
+ rte_bbdev_log(ERR,
+ "c (%u) is out of range 1 <= value <=
%u",
+ tb->c, RTE_BBDEV_LDPC_MAX_CODE_BLOCKS);
+ return -1;
+ }
+ if (tb->cab > tb->c) {
+ rte_bbdev_log(ERR,
+ "cab (%u) is greater than c (%u)",
+ tb->cab, tb->c);
+ return -1;
+ }
+ if ((tb->ea < RTE_BBDEV_LDPC_MIN_CB_SIZE)
+ && tb->r < tb->cab) {
+ rte_bbdev_log(ERR,
+ "ea (%u) is less than %u or it is not
even",
+ tb->ea, RTE_BBDEV_LDPC_MIN_CB_SIZE);
+ return -1;
+ }
+ if ((tb->eb < RTE_BBDEV_LDPC_MIN_CB_SIZE)
+ && tb->c > tb->cab) {
+ rte_bbdev_log(ERR,
+ "eb (%u) is less than %u",
+ tb->eb, RTE_BBDEV_LDPC_MIN_CB_SIZE);
+ return -1;
+ }
+ if (tb->r > (tb->c - 1)) {
+ rte_bbdev_log(ERR,
+ "r (%u) is greater than c - 1 (%u)",
+ tb->r, tb->c - 1);
+ return -1;
+ }
+ } else {
+ cb = &ldpc_enc->cb_params;
+ if (cb->e < RTE_BBDEV_LDPC_MIN_CB_SIZE) {
+ rte_bbdev_log(ERR,
+ "e (%u) is less than %u or it is not
even",
+ cb->e, RTE_BBDEV_LDPC_MIN_CB_SIZE);
+ return -1;
+ }
+ }
+ return 0;
+}
+#endif
+
+static inline char *
+mbuf_append(struct rte_mbuf *m_head, struct rte_mbuf *m, uint16_t len)
+{
+ if (unlikely(len > rte_pktmbuf_tailroom(m)))
+ return NULL;
+
+ char *tail = (char *)m->buf_addr + m->data_off + m->data_len;
+ m->data_len = (uint16_t)(m->data_len + len);
+ m_head->pkt_len = (m_head->pkt_len + len);
+ return tail;
+}
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+/* Validates LDPC decoder parameters */
+static int
+validate_dec_op(struct rte_bbdev_dec_op *op __rte_unused)
+{
+ struct rte_bbdev_op_ldpc_dec *ldpc_dec = &op->ldpc_dec;
+ struct rte_bbdev_op_dec_ldpc_cb_params *cb = NULL;
+ struct rte_bbdev_op_dec_ldpc_tb_params *tb = NULL;
+
+ if (op->mempool == NULL) {
+ rte_bbdev_log(ERR, "Invalid mempool pointer");
+ return -1;
+ }
+ if (ldpc_dec->rv_index > 3) {
+ rte_bbdev_log(ERR,
+ "rv_index (%u) is out of range 0 <= value <= 3",
+ ldpc_dec->rv_index);
+ return -1;
+ }
+
+ if (ldpc_dec->iter_max == 0) {
+ rte_bbdev_log(ERR,
+ "iter_max (%u) is equal to 0",
+ ldpc_dec->iter_max);
+ return -1;
+ }
+
+ if (ldpc_dec->code_block_mode > 1) {
+ rte_bbdev_log(ERR,
+ "code_block_mode (%u) is out of range 0 <= value <=
1",
+ ldpc_dec->code_block_mode);
+ return -1;
+ }
+
+ if (ldpc_dec->code_block_mode == 0) {
+ tb = &ldpc_dec->tb_params;
+ if (tb->c < 1) {
+ rte_bbdev_log(ERR,
+ "c (%u) is out of range 1 <= value <=
%u",
+ tb->c, RTE_BBDEV_LDPC_MAX_CODE_BLOCKS);
+ return -1;
+ }
+ if (tb->cab > tb->c) {
+ rte_bbdev_log(ERR,
+ "cab (%u) is greater than c (%u)",
+ tb->cab, tb->c);
+ return -1;
+ }
+ } else {
+ cb = &ldpc_dec->cb_params;
+ if (cb->e < RTE_BBDEV_LDPC_MIN_CB_SIZE) {
+ rte_bbdev_log(ERR,
+ "e (%u) is out of range %u <= value <=
%u",
+ cb->e, RTE_BBDEV_LDPC_MIN_CB_SIZE,
+ RTE_BBDEV_LDPC_MAX_CB_SIZE);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+#endif
+
+static inline int
+fpga_harq_write_loopback(struct fpga_5gnr_fec_device *fpga_dev,
+ struct rte_mbuf *harq_input, uint16_t harq_in_length,
+ uint32_t harq_in_offset, uint32_t harq_out_offset)
+{
+ uint32_t out_offset = harq_out_offset;
+ uint32_t in_offset = harq_in_offset;
+ uint32_t left_length = harq_in_length;
+ uint32_t reg_32, increment = 0;
+ uint64_t *input = NULL;
+ uint32_t last_transaction = left_length
+ % FPGA_5GNR_FEC_DDR_WR_DATA_LEN_IN_BYTES;
+ uint64_t last_word;
+
+ if (last_transaction > 0)
+ left_length -= last_transaction;
+
+ /*
+ * Get HARQ buffer size for each VF/PF: When 0x00, there is no
+ * available DDR space for the corresponding VF/PF.
+ */
+ reg_32 = fpga_reg_read_32(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_HARQ_BUF_SIZE_REGS);
+ if (reg_32 < harq_in_length) {
+ left_length = reg_32;
+ rte_bbdev_log(ERR, "HARQ in length > HARQ buffer size\n");
+ }
+
+ input = (uint64_t *)rte_pktmbuf_mtod_offset(harq_input,
+ uint8_t *, in_offset);
+
+ while (left_length > 0) {
+ if (fpga_reg_read_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_ADDR_RDY_REGS) == 1) {
+ fpga_reg_write_32(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_WR_ADDR_REGS,
+ out_offset);
+ fpga_reg_write_64(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_WR_DATA_REGS,
+ input[increment]);
+ left_length -= FPGA_5GNR_FEC_DDR_WR_DATA_LEN_IN_BYTES;
+ out_offset += FPGA_5GNR_FEC_DDR_WR_DATA_LEN_IN_BYTES;
+ increment++;
+ fpga_reg_write_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_WR_DONE_REGS, 1);
+ }
+ }
+ while (last_transaction > 0) {
+ if (fpga_reg_read_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_ADDR_RDY_REGS) == 1) {
+ fpga_reg_write_32(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_WR_ADDR_REGS,
+ out_offset);
+ last_word = input[increment];
+ last_word &= (uint64_t)(1 << (last_transaction * 4))
+ - 1;
+ fpga_reg_write_64(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_WR_DATA_REGS,
+ last_word);
+ fpga_reg_write_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_WR_DONE_REGS, 1);
+ last_transaction = 0;
+ }
+ }
+ return 1;
+}
+
+static inline int
+fpga_harq_read_loopback(struct fpga_5gnr_fec_device *fpga_dev,
+ struct rte_mbuf *harq_output, uint16_t harq_in_length,
+ uint32_t harq_in_offset, uint32_t harq_out_offset)
+{
+ uint32_t left_length, in_offset = harq_in_offset;
+ uint64_t reg;
+ uint32_t increment = 0;
+ uint64_t *input = NULL;
+ uint32_t last_transaction = harq_in_length
+ % FPGA_5GNR_FEC_DDR_WR_DATA_LEN_IN_BYTES;
+
+ if (last_transaction > 0)
+ harq_in_length += (8 - last_transaction);
+
+ reg = fpga_reg_read_32(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_HARQ_BUF_SIZE_REGS);
+ if (reg < harq_in_length) {
+ harq_in_length = reg;
+ rte_bbdev_log(ERR, "HARQ in length > HARQ buffer size\n");
+ }
+
+ if (!mbuf_append(harq_output, harq_output, harq_in_length)) {
+ rte_bbdev_log(ERR, "HARQ output buffer warning %d %d\n",
+ harq_output->buf_len -
+ rte_pktmbuf_headroom(harq_output),
+ harq_in_length);
+ harq_in_length = harq_output->buf_len -
+ rte_pktmbuf_headroom(harq_output);
+ if (!mbuf_append(harq_output, harq_output, harq_in_length)) {
+ rte_bbdev_log(ERR, "HARQ output buffer issue %d %d\n",
+ harq_output->buf_len, harq_in_length);
+ return -1;
+ }
+ }
+ left_length = harq_in_length;
+
+ input = (uint64_t *)rte_pktmbuf_mtod_offset(harq_output,
+ uint8_t *, harq_out_offset);
+
+ while (left_length > 0) {
+ fpga_reg_write_32(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_RD_ADDR_REGS, in_offset);
+ fpga_reg_write_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_RD_DONE_REGS, 1);
+ reg = fpga_reg_read_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_RD_RDY_REGS);
+ while (reg != 1) {
+ reg = fpga_reg_read_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_RD_RDY_REGS);
+ if (reg == FPGA_DDR_OVERFLOW) {
+ rte_bbdev_log(ERR,
+ "Read address is overflow!\n");
+ return -1;
+ }
+ }
+ input[increment] = fpga_reg_read_64(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_RD_DATA_REGS);
+ left_length -= FPGA_5GNR_FEC_DDR_RD_DATA_LEN_IN_BYTES;
+ in_offset += FPGA_5GNR_FEC_DDR_WR_DATA_LEN_IN_BYTES;
+ increment++;
+ fpga_reg_write_8(fpga_dev->mmio_base,
+ FPGA_5GNR_FEC_DDR4_RD_DONE_REGS, 0);
+ }
+ return 1;
+}
+
+static inline int
+enqueue_ldpc_enc_one_op_cb(struct fpga_queue *q, struct rte_bbdev_enc_op *op,
+ uint16_t desc_offset)
+{
+ union fpga_dma_desc *desc;
+ int ret;
+ uint8_t c, crc24_bits = 0;
+ struct rte_bbdev_op_ldpc_enc *enc = &op->ldpc_enc;
+ uint16_t in_offset = enc->input.offset;
+ uint16_t out_offset = enc->output.offset;
+ struct rte_mbuf *m_in = enc->input.data;
+ struct rte_mbuf *m_out = enc->output.data;
+ struct rte_mbuf *m_out_head = enc->output.data;
+ uint32_t in_length, out_length, e;
+ uint16_t total_left = enc->input.length;
+ uint16_t ring_offset;
+ uint16_t K, k_;
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ /* Validate op structure */
+ /* FIXME */
+ if (validate_enc_op(op) == -1) {
+ rte_bbdev_log(ERR, "LDPC encoder validation failed");
+ return -EINVAL;
+ }
+#endif
+
+ /* Clear op status */
+ op->status = 0;
+
+ if (m_in == NULL || m_out == NULL) {
+ rte_bbdev_log(ERR, "Invalid mbuf pointer");
+ op->status = 1 << RTE_BBDEV_DATA_ERROR;
+ return -EINVAL;
+ }
+
+ if (enc->op_flags & RTE_BBDEV_LDPC_CRC_24B_ATTACH)
+ crc24_bits = 24;
+
+ if (enc->code_block_mode == 0) {
+ /* For Transport Block mode */
+ /* FIXME */
+ c = enc->tb_params.c;
+ e = enc->tb_params.ea;
+ } else { /* For Code Block mode */
+ c = 1;
+ e = enc->cb_params.e;
+ }
+
+ /* Update total_left */
+ K = (enc->basegraph == 1 ? 22 : 10) * enc->z_c;
+ k_ = K - enc->n_filler;
+ in_length = (k_ - crc24_bits) >> 3;
+ out_length = (e + 7) >> 3;
+
+ total_left = rte_pktmbuf_data_len(m_in) - in_offset;
+
+ /* Update offsets */
+ if (total_left != in_length) {
+ op->status |= 1 << RTE_BBDEV_DATA_ERROR;
+ rte_bbdev_log(ERR,
+ "Mismatch between mbuf length and included CBs sizes
%d",
+ total_left);
+ }
+
+ mbuf_append(m_out_head, m_out, out_length);
+
+ /* Offset into the ring */
+ ring_offset = ((q->tail + desc_offset) & q->sw_ring_wrap_mask);
+ /* Setup DMA Descriptor */
+ desc = q->ring_addr + ring_offset;
+
+ ret = fpga_dma_desc_te_fill(op, &desc->enc_req, m_in, m_out,
+ k_, e, in_offset, out_offset, ring_offset, c);
+ if (unlikely(ret < 0))
+ return ret;
+
+ /* Update lengths */
+ total_left -= in_length;
+ op->ldpc_enc.output.length += out_length;
+
+ if (total_left > 0) {
+ rte_bbdev_log(ERR,
+ "Mismatch between mbuf length and included CB sizes: mbuf
len %u, cb len %u",
+ total_left, in_length);
+ return -1;
+ }
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ print_dma_enc_desc_debug_info(desc);
+#endif
+ return 1;
+}
+
+static inline int
+enqueue_ldpc_dec_one_op_cb(struct fpga_queue *q, struct rte_bbdev_dec_op *op,
+ uint16_t desc_offset)
+{
+ union fpga_dma_desc *desc;
+ int ret;
+ uint16_t ring_offset;
+ uint8_t c;
+ uint16_t e, in_length, out_length, k0, l, seg_total_left, sys_cols;
+ uint16_t K, parity_offset, harq_in_length = 0, harq_out_length = 0;
+ uint16_t crc24_overlap = 0;
+ struct rte_bbdev_op_ldpc_dec *dec = &op->ldpc_dec;
+ struct rte_mbuf *m_in = dec->input.data;
+ struct rte_mbuf *m_out = dec->hard_output.data;
+ struct rte_mbuf *m_out_head = dec->hard_output.data;
+ uint16_t in_offset = dec->input.offset;
+ uint16_t out_offset = dec->hard_output.offset;
+ uint32_t harq_offset = 0;
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ /* Validate op structure */
+ if (validate_dec_op(op) == -1) {
+ rte_bbdev_log(ERR, "LDPC decoder validation failed");
+ return -EINVAL;
+ }
+#endif
+
+ /* Clear op status */
+ op->status = 0;
+
+ /* Setup DMA Descriptor */
+ ring_offset = ((q->tail + desc_offset) & q->sw_ring_wrap_mask);
+ desc = q->ring_addr + ring_offset;
+
+ if (check_bit(dec->op_flags,
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_LOOPBACK)) {
+ struct rte_mbuf *harq_in = dec->harq_combined_input.data;
+ struct rte_mbuf *harq_out = dec->harq_combined_output.data;
+ harq_in_length = dec->harq_combined_input.length;
+ uint32_t harq_in_offset = dec->harq_combined_input.offset;
+ uint32_t harq_out_offset = dec->harq_combined_output.offset;
+
+ if (check_bit(dec->op_flags,
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_OUT_ENABLE
+ )) {
+ ret = fpga_harq_write_loopback(q->d, harq_in,
+ harq_in_length, harq_in_offset,
+ harq_out_offset);
+ } else if (check_bit(dec->op_flags,
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_IN_ENABLE
+ )) {
+ ret = fpga_harq_read_loopback(q->d, harq_out,
+ harq_in_length, harq_in_offset,
+ harq_out_offset);
+ dec->harq_combined_output.length = harq_in_length;
+ } else {
+ rte_bbdev_log(ERR, "OP flag Err!");
+ ret = -1;
+ }
+ /* Set descriptor for dequeue */
+ desc->dec_req.done = 1;
+ desc->dec_req.error = 0;
+ desc->dec_req.op_addr = op;
+ desc->dec_req.cbs_in_op = 1;
+ /* Mark this dummy descriptor to be dropped by HW */
+ desc->dec_req.desc_idx = (ring_offset + 1)
+ & q->sw_ring_wrap_mask;
+ return ret; /* Error or number of CB */
+ }
+
+ if (m_in == NULL || m_out == NULL) {
+ rte_bbdev_log(ERR, "Invalid mbuf pointer");
+ op->status = 1 << RTE_BBDEV_DATA_ERROR;
+ return -1;
+ }
+
+ c = 1;
+ e = dec->cb_params.e;
+
+ if (check_bit(dec->op_flags, RTE_BBDEV_LDPC_CRC_TYPE_24B_DROP))
+ crc24_overlap = 24;
+
+ sys_cols = (dec->basegraph == 1) ? 22 : 10;
+ K = sys_cols * dec->z_c;
+ parity_offset = K - 2 * dec->z_c;
+
+ out_length = ((K - crc24_overlap - dec->n_filler) >> 3);
+ in_length = e;
+ seg_total_left = dec->input.length;
+
+ if (check_bit(dec->op_flags, RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE)) {
+ harq_in_length = RTE_MIN(dec->harq_combined_input.length,
+ (uint32_t)dec->n_cb);
+ }
+
+ if (check_bit(dec->op_flags, RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE)) {
+ k0 = get_k0(dec->n_cb, dec->z_c,
+ dec->basegraph, dec->rv_index);
+ if (k0 > parity_offset)
+ l = k0 + e;
+ else
+ l = k0 + e + dec->n_filler;
+ harq_out_length = RTE_MIN(RTE_MAX(harq_in_length, l),
+ dec->n_cb - dec->n_filler);
+ dec->harq_combined_output.length = harq_out_length;
+ }
+
+ mbuf_append(m_out_head, m_out, out_length);
+ if (check_bit(dec->op_flags, RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE))
+ harq_offset = dec->harq_combined_input.offset;
+ else if (check_bit(dec->op_flags, RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE))
+ harq_offset = dec->harq_combined_output.offset;
+
+ if ((harq_offset & 0x3FF) > 0) {
+ rte_bbdev_log(ERR, "Invalid HARQ offset %d", harq_offset);
+ op->status = 1 << RTE_BBDEV_DATA_ERROR;
+ return -1;
+ }
+
+ ret = fpga_dma_desc_ld_fill(op, &desc->dec_req, m_in, m_out,
+ harq_in_length, in_offset, out_offset, harq_offset,
+ ring_offset, c);
+ if (unlikely(ret < 0))
+ return ret;
+ /* Update lengths */
+ seg_total_left -= in_length;
+ op->ldpc_dec.hard_output.length += out_length;
+ if (seg_total_left > 0) {
+ rte_bbdev_log(ERR,
+ "Mismatch between mbuf length and included CB sizes:
mbuf len %u, cb len %u",
+ seg_total_left, in_length);
+ return -1;
+ }
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ print_dma_dec_desc_debug_info(desc);
+#endif
+
+ return 1;
+}
+
+static uint16_t
+fpga_enqueue_ldpc_enc(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_enc_op **ops, uint16_t num)
+{
+ uint16_t i, total_enqueued_cbs = 0;
+ int32_t avail;
+ int enqueued_cbs;
+ struct fpga_queue *q = q_data->queue_private;
+ union fpga_dma_desc *desc;
+
+ /* Check if queue is not full */
+ if (unlikely(((q->tail + 1) & q->sw_ring_wrap_mask) ==
+ q->head_free_desc))
+ return 0;
+
+ /* Calculates available space */
+ avail = (q->head_free_desc > q->tail) ?
+ q->head_free_desc - q->tail - 1 :
+ q->ring_ctrl_reg.ring_size + q->head_free_desc - q->tail - 1;
+
+ for (i = 0; i < num; ++i) {
+
+ /* Check if there is available space for further
+ * processing
+ */
+ if (unlikely(avail - 1 < 0))
+ break;
+ avail -= 1;
+ enqueued_cbs = enqueue_ldpc_enc_one_op_cb(q, ops[i],
+ total_enqueued_cbs);
+
+ if (enqueued_cbs < 0)
+ break;
+
+ total_enqueued_cbs += enqueued_cbs;
+
+ rte_bbdev_log_debug("enqueuing enc ops [%d/%d] | head %d | tail
%d",
+ total_enqueued_cbs, num,
+ q->head_free_desc, q->tail);
+ }
+
+ /* Set interrupt bit for last CB in enqueued ops. FPGA issues interrupt
+ * only when all previous CBs were already processed.
+ */
+ desc = q->ring_addr + ((q->tail + total_enqueued_cbs - 1)
+ & q->sw_ring_wrap_mask);
+ desc->enc_req.irq_en = q->irq_enable;
+
+ fpga_dma_enqueue(q, total_enqueued_cbs, &q_data->queue_stats);
+
+ /* Update stats */
+ q_data->queue_stats.enqueued_count += i;
+ q_data->queue_stats.enqueue_err_count += num - i;
+
+ return i;
+}
+
+static uint16_t
+fpga_enqueue_ldpc_dec(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_dec_op **ops, uint16_t num)
+{
+ uint16_t i, total_enqueued_cbs = 0;
+ int32_t avail;
+ int enqueued_cbs;
+ struct fpga_queue *q = q_data->queue_private;
+ union fpga_dma_desc *desc;
+
+ /* Check if queue is not full */
+ if (unlikely(((q->tail + 1) & q->sw_ring_wrap_mask) ==
+ q->head_free_desc))
+ return 0;
+
+ /* Calculates available space */
+ avail = (q->head_free_desc > q->tail) ?
+ q->head_free_desc - q->tail - 1 :
+ q->ring_ctrl_reg.ring_size + q->head_free_desc - q->tail - 1;
+
+ for (i = 0; i < num; ++i) {
+
+ /* Check if there is available space for further
+ * processing
+ */
+ if (unlikely(avail - 1 < 0))
+ break;
+ avail -= 1;
+ enqueued_cbs = enqueue_ldpc_dec_one_op_cb(q, ops[i],
+ total_enqueued_cbs);
+
+ if (enqueued_cbs < 0)
+ break;
+
+ total_enqueued_cbs += enqueued_cbs;
+
+ rte_bbdev_log_debug("enqueuing dec ops [%d/%d] | head %d | tail
%d",
+ total_enqueued_cbs, num,
+ q->head_free_desc, q->tail);
+ }
+
+ /* Update stats */
+ q_data->queue_stats.enqueued_count += i;
+ q_data->queue_stats.enqueue_err_count += num - i;
+
+ /* Set interrupt bit for last CB in enqueued ops. FPGA issues interrupt
+ * only when all previous CBs were already processed.
+ */
+ desc = q->ring_addr + ((q->tail + total_enqueued_cbs - 1)
+ & q->sw_ring_wrap_mask);
+ desc->enc_req.irq_en = q->irq_enable;
+ fpga_dma_enqueue(q, total_enqueued_cbs, &q_data->queue_stats);
+ return i;
+}
+
+
+static inline int
+dequeue_ldpc_enc_one_op_cb(struct fpga_queue *q, struct rte_bbdev_enc_op **op,
+ uint16_t desc_offset)
+{
+ union fpga_dma_desc *desc;
+ int desc_error = 0;
+
+ /* Set current desc */
+ desc = q->ring_addr + ((q->head_free_desc + desc_offset)
+ & q->sw_ring_wrap_mask);
+
+ /*check if done */
+ if (desc->enc_req.done == 0)
+ return -1;
+
+ /* make sure the response is read atomically */
+ rte_smp_rmb();
+
+ rte_bbdev_log_debug("DMA response desc %p", desc);
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ print_dma_enc_desc_debug_info(desc);
+#endif
+
+ *op = desc->enc_req.op_addr;
+ /* Check the descriptor error field, return 1 on error */
+ desc_error = check_desc_error(desc->enc_req.error);
+ (*op)->status = desc_error << RTE_BBDEV_DATA_ERROR;
+
+ return 1;
+}
+
+
+static inline int
+dequeue_ldpc_dec_one_op_cb(struct fpga_queue *q, struct rte_bbdev_dec_op **op,
+ uint16_t desc_offset)
+{
+ union fpga_dma_desc *desc;
+ int desc_error = 0;
+ /* Set descriptor */
+ desc = q->ring_addr + ((q->head_free_desc + desc_offset)
+ & q->sw_ring_wrap_mask);
+
+ /* Verify done bit is set */
+ if (desc->dec_req.done == 0)
+ return -1;
+
+ /* make sure the response is read atomically */
+ rte_smp_rmb();
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ print_dma_dec_desc_debug_info(desc);
+#endif
+
+ *op = desc->dec_req.op_addr;
+
+ if (check_bit((*op)->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_LOOPBACK)) {
+ (*op)->status = 0;
+ return 1;
+ }
+
+ /* FPGA reports iterations based on round-up minus 1 */
+ (*op)->ldpc_dec.iter_count = desc->dec_req.iter + 1;
+ /* CRC Check criteria */
+ if (desc->dec_req.crc24b_ind && !(desc->dec_req.crcb_pass))
+ (*op)->status = 1 << RTE_BBDEV_CRC_ERROR;
+ /* et_pass = 0 when decoder fails */
+ (*op)->status |= !(desc->dec_req.et_pass) << RTE_BBDEV_SYNDROME_ERROR;
+ /* Check the descriptor error field, return 1 on error */
+ desc_error = check_desc_error(desc->dec_req.error);
+ (*op)->status |= desc_error << RTE_BBDEV_DATA_ERROR;
+ return 1;
+}
+
+static uint16_t
+fpga_dequeue_ldpc_enc(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_enc_op **ops, uint16_t num)
+{
+ struct fpga_queue *q = q_data->queue_private;
+ uint32_t avail = (q->tail - q->head_free_desc) & q->sw_ring_wrap_mask;
+ uint16_t i;
+ uint16_t dequeued_cbs = 0;
+ int ret;
+
+ for (i = 0; (i < num) && (dequeued_cbs < avail); ++i) {
+ ret = dequeue_ldpc_enc_one_op_cb(q, &ops[i], dequeued_cbs);
+
+ if (ret < 0)
+ break;
+
+ dequeued_cbs += ret;
+
+ rte_bbdev_log_debug("dequeuing enc ops [%d/%d] | head %d | tail
%d",
+ dequeued_cbs, num, q->head_free_desc, q->tail);
+ }
+
+ /* Update head */
+ q->head_free_desc = (q->head_free_desc + dequeued_cbs) &
+ q->sw_ring_wrap_mask;
+
+ /* Update stats */
+ q_data->queue_stats.dequeued_count += i;
+
+ return i;
+}
+
+static uint16_t
+fpga_dequeue_ldpc_dec(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_dec_op **ops, uint16_t num)
+{
+ struct fpga_queue *q = q_data->queue_private;
+ uint32_t avail = (q->tail - q->head_free_desc) & q->sw_ring_wrap_mask;
+ uint16_t i;
+ uint16_t dequeued_cbs = 0;
+ int ret;
+
+ for (i = 0; (i < num) && (dequeued_cbs < avail); ++i) {
+ ret = dequeue_ldpc_dec_one_op_cb(q, &ops[i], dequeued_cbs);
+
+ if (ret < 0)
+ break;
+
+ dequeued_cbs += ret;
+
+ rte_bbdev_log_debug("dequeuing dec ops [%d/%d] | head %d | tail
%d",
+ dequeued_cbs, num, q->head_free_desc, q->tail);
+ }
+
+ /* Update head */
+ q->head_free_desc = (q->head_free_desc + dequeued_cbs) &
+ q->sw_ring_wrap_mask;
+
+ /* Update stats */
+ q_data->queue_stats.dequeued_count += i;
+
+ return i;
+}
+
+
+/* Initialization Function */
+static void
+fpga_5gnr_fec_init(struct rte_bbdev *dev, struct rte_pci_driver *drv)
+{
+ struct rte_pci_device *pci_dev = RTE_DEV_TO_PCI(dev->device);
+
+ dev->dev_ops = &fpga_ops;
+ dev->enqueue_ldpc_enc_ops = fpga_enqueue_ldpc_enc;
+ dev->enqueue_ldpc_dec_ops = fpga_enqueue_ldpc_dec;
+ dev->dequeue_ldpc_enc_ops = fpga_dequeue_ldpc_enc;
+ dev->dequeue_ldpc_dec_ops = fpga_dequeue_ldpc_dec;
+
+ ((struct fpga_5gnr_fec_device *) dev->data->dev_private)->pf_device =
+ !strcmp(drv->driver.name,
+ RTE_STR(FPGA_5GNR_FEC_PF_DRIVER_NAME));
+ ((struct fpga_5gnr_fec_device *) dev->data->dev_private)->mmio_base =
+ pci_dev->mem_resource[0].addr;
+
+ rte_bbdev_log_debug(
+ "Init device %s [%s] @ virtaddr %p phyaddr %#"PRIx64,
+ dev->device->driver->name, dev->data->name,
+ (void *)pci_dev->mem_resource[0].addr,
+ pci_dev->mem_resource[0].phys_addr);
+}
+
+static int
+fpga_5gnr_fec_probe(struct rte_pci_driver *pci_drv,
+ struct rte_pci_device *pci_dev)
+{
+ struct rte_bbdev *bbdev = NULL;
+ char dev_name[RTE_BBDEV_NAME_MAX_LEN];
+
+ if (pci_dev == NULL) {
+ rte_bbdev_log(ERR, "NULL PCI device");
+ return -EINVAL;
+ }
+
+ rte_pci_device_name(&pci_dev->addr, dev_name, sizeof(dev_name));
+
+ /* Allocate memory to be used privately by drivers */
+ bbdev = rte_bbdev_allocate(pci_dev->device.name);
+ if (bbdev == NULL)
+ return -ENODEV;
+
+ /* allocate device private memory */
+ bbdev->data->dev_private = rte_zmalloc_socket(dev_name,
+ sizeof(struct fpga_5gnr_fec_device),
+ RTE_CACHE_LINE_SIZE,
+ pci_dev->device.numa_node);
+
+ if (bbdev->data->dev_private == NULL) {
+ rte_bbdev_log(CRIT,
+ "Allocate of %zu bytes for device \"%s\"
failed",
+ sizeof(struct fpga_5gnr_fec_device), dev_name);
+ rte_bbdev_release(bbdev);
+ return -ENOMEM;
+ }
+
+ /* Fill HW specific part of device structure */
+ bbdev->device = &pci_dev->device;
+ bbdev->intr_handle = &pci_dev->intr_handle;
+ bbdev->data->socket_id = pci_dev->device.numa_node;
+
+ /* Invoke FEC FPGA device initialization function */
+ fpga_5gnr_fec_init(bbdev, pci_drv);
+
+ rte_bbdev_log_debug("bbdev id = %u [%s]",
+ bbdev->data->dev_id, dev_name);
+
+ struct fpga_5gnr_fec_device *d = bbdev->data->dev_private;
+ uint32_t version_id = fpga_reg_read_32(d->mmio_base,
+ FPGA_5GNR_FEC_VERSION_ID);
+ rte_bbdev_log(INFO, "FEC FPGA RTL v%u.%u",
+ ((uint16_t)(version_id >> 16)), ((uint16_t)version_id));
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ if (!strcmp(bbdev->device->driver->name,
+ RTE_STR(FPGA_5GNR_FEC_PF_DRIVER_NAME)))
+ print_static_reg_debug_info(d->mmio_base);
+#endif
+ return 0;
+}
+
+static int
+fpga_5gnr_fec_remove(struct rte_pci_device *pci_dev)
+{
+ struct rte_bbdev *bbdev;
+ int ret;
+ uint8_t dev_id;
+
+ if (pci_dev == NULL)
+ return -EINVAL;
+
+ /* Find device */
+ bbdev = rte_bbdev_get_named_dev(pci_dev->device.name);
+ if (bbdev == NULL) {
+ rte_bbdev_log(CRIT,
+ "Couldn't find HW dev \"%s\" to uninitialise
it",
+ pci_dev->device.name);
+ return -ENODEV;
+ }
+ dev_id = bbdev->data->dev_id;
+
+ /* free device private memory before close */
+ rte_free(bbdev->data->dev_private);
+
+ /* Close device */
+ ret = rte_bbdev_close(dev_id);
+ if (ret < 0)
+ rte_bbdev_log(ERR,
+ "Device %i failed to close during uninit: %i",
+ dev_id, ret);
+
+ /* release bbdev from library */
+ ret = rte_bbdev_release(bbdev);
+ if (ret)
+ rte_bbdev_log(ERR, "Device %i failed to uninit: %i", dev_id,
+ ret);
+
+ rte_bbdev_log_debug("Destroyed bbdev = %u", dev_id);
+
+ return 0;
+}
+
+static inline void
+set_default_fpga_conf(struct fpga_5gnr_fec_conf *def_conf)
+{
+ /* clear default configuration before initialization */
+ memset(def_conf, 0, sizeof(struct fpga_5gnr_fec_conf));
+ /* Set pf mode to true */
+ def_conf->pf_mode_en = true;
+
+ /* Set ratio between UL and DL to 1:1 (unit of weight is 3 CBs) */
+ def_conf->ul_bandwidth = 3;
+ def_conf->dl_bandwidth = 3;
+
+ /* Set Load Balance Factor to 64 */
+ def_conf->dl_load_balance = 64;
+ def_conf->ul_load_balance = 64;
+}
+
+/* Initial configuration of FPGA 5GNR FEC device */
+int
+fpga_5gnr_fec_configure(const char *dev_name,
+ const struct fpga_5gnr_fec_conf *conf)
+{
+ uint32_t payload_32, address;
+ uint16_t payload_16;
+ uint8_t payload_8;
+ uint16_t q_id, vf_id, total_q_id, total_ul_q_id, total_dl_q_id;
+ struct rte_bbdev *bbdev = rte_bbdev_get_named_dev(dev_name);
+ struct fpga_5gnr_fec_conf def_conf;
+
+ if (bbdev == NULL) {
+ rte_bbdev_log(ERR,
+ "Invalid dev_name (%s), or device is not yet
initialised",
+ dev_name);
+ return -ENODEV;
+ }
+
+ struct fpga_5gnr_fec_device *d = bbdev->data->dev_private;
+
+ if (conf == NULL) {
+ rte_bbdev_log(ERR,
+ "FPGA Configuration was not provided. Default
configuration will be loaded.");
+ set_default_fpga_conf(&def_conf);
+ conf = &def_conf;
+ }
+
+ /*
+ * Configure UL:DL ratio.
+ * [7:0]: UL weight
+ * [15:8]: DL weight
+ */
+ payload_16 = (conf->dl_bandwidth << 8) | conf->ul_bandwidth;
+ address = FPGA_5GNR_FEC_CONFIGURATION;
+ fpga_reg_write_16(d->mmio_base, address, payload_16);
+
+ /* Clear all queues registers */
+ payload_32 = FPGA_INVALID_HW_QUEUE_ID;
+ for (q_id = 0; q_id < FPGA_TOTAL_NUM_QUEUES; ++q_id) {
+ address = (q_id << 2) + FPGA_5GNR_FEC_QUEUE_MAP;
+ fpga_reg_write_32(d->mmio_base, address, payload_32);
+ }
+
+ /*
+ * If PF mode is enabled allocate all queues for PF only.
+ *
+ * For VF mode each VF can have different number of UL and DL queues.
+ * Total number of queues to configure cannot exceed FPGA
+ * capabilities - 64 queues - 32 queues for UL and 32 queues for DL.
+ * Queues mapping is done according to configuration:
+ *
+ * UL queues:
+ * | Q_ID | VF_ID |
+ * | 0 | 0 |
+ * | ... | 0 |
+ * | conf->vf_dl_queues_number[0] - 1 | 0 |
+ * | conf->vf_dl_queues_number[0] | 1 |
+ * | ... | 1 |
+ * | conf->vf_dl_queues_number[1] - 1 | 1 |
+ * | ... | ... |
+ * | conf->vf_dl_queues_number[7] - 1 | 7 |
+ *
+ * DL queues:
+ * | Q_ID | VF_ID |
+ * | 32 | 0 |
+ * | ... | 0 |
+ * | conf->vf_ul_queues_number[0] - 1 | 0 |
+ * | conf->vf_ul_queues_number[0] | 1 |
+ * | ... | 1 |
+ * | conf->vf_ul_queues_number[1] - 1 | 1 |
+ * | ... | ... |
+ * | conf->vf_ul_queues_number[7] - 1 | 7 |
+ *
+ * Example of configuration:
+ * conf->vf_ul_queues_number[0] = 4; -> 4 UL queues for VF0
+ * conf->vf_dl_queues_number[0] = 4; -> 4 DL queues for VF0
+ * conf->vf_ul_queues_number[1] = 2; -> 2 UL queues for VF1
+ * conf->vf_dl_queues_number[1] = 2; -> 2 DL queues for VF1
+ *
+ * UL:
+ * | Q_ID | VF_ID |
+ * | 0 | 0 |
+ * | 1 | 0 |
+ * | 2 | 0 |
+ * | 3 | 0 |
+ * | 4 | 1 |
+ * | 5 | 1 |
+ *
+ * DL:
+ * | Q_ID | VF_ID |
+ * | 32 | 0 |
+ * | 33 | 0 |
+ * | 34 | 0 |
+ * | 35 | 0 |
+ * | 36 | 1 |
+ * | 37 | 1 |
+ */
+ if (conf->pf_mode_en) {
+ payload_32 = 0x1;
+ for (q_id = 0; q_id < FPGA_TOTAL_NUM_QUEUES; ++q_id) {
+ address = (q_id << 2) + FPGA_5GNR_FEC_QUEUE_MAP;
+ fpga_reg_write_32(d->mmio_base, address, payload_32);
+ }
+ } else {
+ /* Calculate total number of UL and DL queues to configure */
+ total_ul_q_id = total_dl_q_id = 0;
+ for (vf_id = 0; vf_id < FPGA_5GNR_FEC_NUM_VFS; ++vf_id) {
+ total_ul_q_id += conf->vf_ul_queues_number[vf_id];
+ total_dl_q_id += conf->vf_dl_queues_number[vf_id];
+ }
+ total_q_id = total_dl_q_id + total_ul_q_id;
+ /*
+ * Check if total number of queues to configure does not exceed
+ * FPGA capabilities (64 queues - 32 UL and 32 DL queues)
+ */
+ if ((total_ul_q_id > FPGA_NUM_UL_QUEUES) ||
+ (total_dl_q_id > FPGA_NUM_DL_QUEUES) ||
+ (total_q_id > FPGA_TOTAL_NUM_QUEUES)) {
+ rte_bbdev_log(ERR,
+ "FPGA Configuration failed. Too many queues
to configure: UL_Q %u, DL_Q %u, FPGA_Q %u",
+ total_ul_q_id, total_dl_q_id,
+ FPGA_TOTAL_NUM_QUEUES);
+ return -EINVAL;
+ }
+ total_ul_q_id = 0;
+ for (vf_id = 0; vf_id < FPGA_5GNR_FEC_NUM_VFS; ++vf_id) {
+ for (q_id = 0; q_id < conf->vf_ul_queues_number[vf_id];
+ ++q_id, ++total_ul_q_id) {
+ address = (total_ul_q_id << 2) +
+ FPGA_5GNR_FEC_QUEUE_MAP;
+ payload_32 = ((0x80 + vf_id) << 16) | 0x1;
+ fpga_reg_write_32(d->mmio_base, address,
+ payload_32);
+ }
+ }
+ total_dl_q_id = 0;
+ for (vf_id = 0; vf_id < FPGA_5GNR_FEC_NUM_VFS; ++vf_id) {
+ for (q_id = 0; q_id < conf->vf_dl_queues_number[vf_id];
+ ++q_id, ++total_dl_q_id) {
+ address = ((total_dl_q_id + FPGA_NUM_UL_QUEUES)
+ << 2) + FPGA_5GNR_FEC_QUEUE_MAP;
+ payload_32 = ((0x80 + vf_id) << 16) | 0x1;
+ fpga_reg_write_32(d->mmio_base, address,
+ payload_32);
+ }
+ }
+ }
+
+ /* Setting Load Balance Factor */
+ payload_16 = (conf->dl_load_balance << 8) | (conf->ul_load_balance);
+ address = FPGA_5GNR_FEC_LOAD_BALANCE_FACTOR;
+ fpga_reg_write_16(d->mmio_base, address, payload_16);
+
+ /* Setting length of ring descriptor entry */
+ payload_16 = FPGA_RING_DESC_ENTRY_LENGTH;
+ address = FPGA_5GNR_FEC_RING_DESC_LEN;
+ fpga_reg_write_16(d->mmio_base, address, payload_16);
+
+ /* Setting FLR timeout value */
+ payload_16 = conf->flr_time_out;
+ address = FPGA_5GNR_FEC_FLR_TIME_OUT;
+ fpga_reg_write_16(d->mmio_base, address, payload_16);
+
+ /* Queue PF/VF mapping table is ready */
+ payload_8 = 0x1;
+ address = FPGA_5GNR_FEC_QUEUE_PF_VF_MAP_DONE;
+ fpga_reg_write_8(d->mmio_base, address, payload_8);
+
+ rte_bbdev_log_debug("PF FPGA 5GNR FEC configuration complete for %s",
+ dev_name);
+
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ print_static_reg_debug_info(d->mmio_base);
+#endif
+ return 0;
+}
+
+/* FPGA 5GNR FEC PCI PF address map */
+static struct rte_pci_id pci_id_fpga_5gnr_fec_pf_map[] = {
+ {
+ RTE_PCI_DEVICE(FPGA_5GNR_FEC_VENDOR_ID,
+ FPGA_5GNR_FEC_PF_DEVICE_ID)
+ },
+ {.device_id = 0},
+};
+
+static struct rte_pci_driver fpga_5gnr_fec_pci_pf_driver = {
+ .probe = fpga_5gnr_fec_probe,
+ .remove = fpga_5gnr_fec_remove,
+ .id_table = pci_id_fpga_5gnr_fec_pf_map,
+ .drv_flags = RTE_PCI_DRV_NEED_MAPPING
+};
+
+/* FPGA 5GNR FEC PCI VF address map */
+static struct rte_pci_id pci_id_fpga_5gnr_fec_vf_map[] = {
+ {
+ RTE_PCI_DEVICE(FPGA_5GNR_FEC_VENDOR_ID,
+ FPGA_5GNR_FEC_VF_DEVICE_ID)
+ },
+ {.device_id = 0},
+};
+
+static struct rte_pci_driver fpga_5gnr_fec_pci_vf_driver = {
+ .probe = fpga_5gnr_fec_probe,
+ .remove = fpga_5gnr_fec_remove,
+ .id_table = pci_id_fpga_5gnr_fec_vf_map,
+ .drv_flags = RTE_PCI_DRV_NEED_MAPPING
+};
+
+
+RTE_PMD_REGISTER_PCI(FPGA_5GNR_FEC_PF_DRIVER_NAME,
fpga_5gnr_fec_pci_pf_driver);
+RTE_PMD_REGISTER_PCI_TABLE(FPGA_5GNR_FEC_PF_DRIVER_NAME,
+ pci_id_fpga_5gnr_fec_pf_map);
+RTE_PMD_REGISTER_PCI(FPGA_5GNR_FEC_VF_DRIVER_NAME,
fpga_5gnr_fec_pci_vf_driver);
+RTE_PMD_REGISTER_PCI_TABLE(FPGA_5GNR_FEC_VF_DRIVER_NAME,
+ pci_id_fpga_5gnr_fec_vf_map);
+
+RTE_INIT(fpga_5gnr_fec_init_log)
+{
+ fpga_5gnr_fec_logtype = rte_log_register("pmd.bb.fpga_5gnr_fec");
+ if (fpga_5gnr_fec_logtype >= 0)
+#ifdef RTE_LIBRTE_BBDEV_DEBUG
+ rte_log_set_level(fpga_5gnr_fec_logtype, RTE_LOG_DEBUG);
+#else
+ rte_log_set_level(fpga_5gnr_fec_logtype, RTE_LOG_NOTICE);
+#endif
+}
diff --git a/drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.h
b/drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.h
new file mode 100644
index 0000000..7eebc7d
--- /dev/null
+++ b/drivers/baseband/fpga_5gnr_fec/fpga_5gnr_fec.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2020 Intel Corporation
+ */
+
+#ifndef _FPGA_5GNR_FEC_H_
+#define _FPGA_5GNR_FEC_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/**
+ * @file fpga_5gnr_fec.h
+ *
+ * Interface for Intel(R) FGPA 5GNR FEC device configuration at the host level,
+ * directly accessible by the application.
+ * Configuration related to 5GNR functionality is done through
+ * librte_bbdev library.
+ *
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**< Number of Virtual Functions FGPA 4G FEC supports */
+#define FPGA_5GNR_FEC_NUM_VFS 8
+
+/**
+ * Structure to pass FPGA 4G FEC configuration.
+ */
+struct fpga_5gnr_fec_conf {
+ /**< 1 if PF is used for dataplane, 0 for VFs */
+ bool pf_mode_en;
+ /**< Number of UL queues per VF */
+ uint8_t vf_ul_queues_number[FPGA_5GNR_FEC_NUM_VFS];
+ /**< Number of DL queues per VF */
+ uint8_t vf_dl_queues_number[FPGA_5GNR_FEC_NUM_VFS];
+ /**< UL bandwidth. Needed for schedule algorithm */
+ uint8_t ul_bandwidth;
+ /**< DL bandwidth. Needed for schedule algorithm */
+ uint8_t dl_bandwidth;
+ /**< UL Load Balance */
+ uint8_t ul_load_balance;
+ /**< DL Load Balance */
+ uint8_t dl_load_balance;
+ /**< FLR timeout value */
+ uint16_t flr_time_out;
+};
+
+/**
+ * Configure Intel(R) FPGA 5GNR FEC device
+ *
+ * @param dev_name
+ * The name of the device. This is the short form of PCI BDF, e.g. 00:01.0.
+ * It can also be retrieved for a bbdev device from the dev_name field in the
+ * rte_bbdev_info structure returned by rte_bbdev_info_get().
+ * @param conf
+ * Configuration to apply to FPGA 4G FEC.
+ *
+ * @return
+ * Zero on success, negative value on failure.
+ */
+__rte_experimental
+int
+fpga_5gnr_fec_configure(const char *dev_name,
+ const struct fpga_5gnr_fec_conf *conf);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FPGA_5GNR_FEC_H_ */
diff --git a/drivers/baseband/fpga_5gnr_fec/meson.build
b/drivers/baseband/fpga_5gnr_fec/meson.build
new file mode 100644
index 0000000..86121d8
--- /dev/null
+++ b/drivers/baseband/fpga_5gnr_fec/meson.build
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2020 Intel Corporation
+
+deps += ['bbdev', 'bus_vdev', 'ring', 'pci', 'bus_pci']
+allow_experimental_apis = true
+sources = files('fpga_5gnr_fec.c')
diff --git
a/drivers/baseband/fpga_5gnr_fec/rte_pmd_bbdev_fpga_5gnr_fec_version.map
b/drivers/baseband/fpga_5gnr_fec/rte_pmd_bbdev_fpga_5gnr_fec_version.map
new file mode 100644
index 0000000..b0fb971
--- /dev/null
+++ b/drivers/baseband/fpga_5gnr_fec/rte_pmd_bbdev_fpga_5gnr_fec_version.map
@@ -0,0 +1,10 @@
+DPDK_20.0 {
+ local: *;
+};
+
+EXPERIMENTAL {
+ global:
+
+ fpga_5gnr_fec_configure;
+
+};
diff --git a/drivers/baseband/meson.build b/drivers/baseband/meson.build
index be7677f..4d909f9 100644
--- a/drivers/baseband/meson.build
+++ b/drivers/baseband/meson.build
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: BSD-3-Clause
# Copyright(c) 2018 Luca Boccassi <bl...@debian.org>
-drivers = ['null', 'turbo_sw', 'fpga_lte_fec']
+drivers = ['null', 'turbo_sw', 'fpga_lte_fec', 'fpga_5gnr_fec']
config_flag_fmt = 'RTE_LIBRTE_PMD_BBDEV_@0@'
driver_name_fmt = 'rte_pmd_bbdev_@0@'
diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index d295ca0..da12b9e 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -246,6 +246,7 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_NETVSC_PMD) +=
-lrte_pmd_netvsc
ifeq ($(CONFIG_RTE_LIBRTE_BBDEV),y)
_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_NULL) += -lrte_pmd_bbdev_null
_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_LTE_FEC) +=
-lrte_pmd_bbdev_fpga_lte_fec
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_FPGA_5GNR_FEC) +=
-lrte_pmd_bbdev_fpga_5gnr_fec
# TURBO SOFTWARE PMD is dependent on the FLEXRAN library
_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BBDEV_TURBO_SW) += -lrte_pmd_bbdev_turbo_sw
