On 7/7/22 01:28, Nicolas Chautru wrote:
Added device status information, so that the PMD can
expose information related to the underlying accelerator device status.
Minor order change in structure to fit into padding hole.

Signed-off-by: Nicolas Chautru <nicolas.chau...@intel.com>
---
  drivers/baseband/acc100/rte_acc100_pmd.c           |  1 +
  drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c |  1 +
  drivers/baseband/fpga_lte_fec/fpga_lte_fec.c       |  1 +
  drivers/baseband/la12xx/bbdev_la12xx.c             |  1 +
  drivers/baseband/null/bbdev_null.c                 |  1 +
  drivers/baseband/turbo_sw/bbdev_turbo_software.c   |  1 +
  lib/bbdev/rte_bbdev.c                              | 22 ++++++++++++++
  lib/bbdev/rte_bbdev.h                              | 35 ++++++++++++++++++++--
  lib/bbdev/version.map                              |  6 ++++
  9 files changed, 67 insertions(+), 2 deletions(-)

diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c 
b/drivers/baseband/acc100/rte_acc100_pmd.c
index de7e4bc..17ba798 100644
--- a/drivers/baseband/acc100/rte_acc100_pmd.c
+++ b/drivers/baseband/acc100/rte_acc100_pmd.c
@@ -1060,6 +1060,7 @@
/* Read and save the populated config from ACC100 registers */
        fetch_acc100_config(dev);
+       dev_info->device_status = RTE_BBDEV_DEV_NOT_SUPPORTED;
/* This isn't ideal because it reports the maximum number of queues but
         * does not provide info on how many can be uplink/downlink or different
diff --git a/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c 
b/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c
index 82ae6ba..57b12af 100644
--- a/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c
+++ b/drivers/baseband/fpga_5gnr_fec/rte_fpga_5gnr_fec.c
@@ -369,6 +369,7 @@
        dev_info->capabilities = bbdev_capabilities;
        dev_info->cpu_flag_reqs = NULL;
        dev_info->data_endianness = RTE_LITTLE_ENDIAN;
+       dev_info->device_status = RTE_BBDEV_DEV_NOT_SUPPORTED;
/* Calculates number of queues assigned to device */
        dev_info->max_num_queues = 0;
diff --git a/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c 
b/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
index 21d3529..2a330c4 100644
--- a/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
+++ b/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
@@ -645,6 +645,7 @@ struct __rte_cache_aligned fpga_queue {
        dev_info->capabilities = bbdev_capabilities;
        dev_info->cpu_flag_reqs = NULL;
        dev_info->data_endianness = RTE_LITTLE_ENDIAN;
+       dev_info->device_status = RTE_BBDEV_DEV_NOT_SUPPORTED;
/* Calculates number of queues assigned to device */
        dev_info->max_num_queues = 0;
diff --git a/drivers/baseband/la12xx/bbdev_la12xx.c 
b/drivers/baseband/la12xx/bbdev_la12xx.c
index 4d1bd16..c1f88c6 100644
--- a/drivers/baseband/la12xx/bbdev_la12xx.c
+++ b/drivers/baseband/la12xx/bbdev_la12xx.c
@@ -100,6 +100,7 @@ struct bbdev_la12xx_params {
        dev_info->capabilities = bbdev_capabilities;
        dev_info->cpu_flag_reqs = NULL;
        dev_info->min_alignment = 64;
+       dev_info->device_status = RTE_BBDEV_DEV_NOT_SUPPORTED;
rte_bbdev_log_debug("got device info from %u", dev->data->dev_id);
  }
diff --git a/drivers/baseband/null/bbdev_null.c 
b/drivers/baseband/null/bbdev_null.c
index 248e129..94a1976 100644
--- a/drivers/baseband/null/bbdev_null.c
+++ b/drivers/baseband/null/bbdev_null.c
@@ -82,6 +82,7 @@ struct bbdev_queue {
         * here for code completeness.
         */
        dev_info->data_endianness = RTE_LITTLE_ENDIAN;
+       dev_info->device_status = RTE_BBDEV_DEV_NOT_SUPPORTED;
rte_bbdev_log_debug("got device info from %u", dev->data->dev_id);
  }
diff --git a/drivers/baseband/turbo_sw/bbdev_turbo_software.c 
b/drivers/baseband/turbo_sw/bbdev_turbo_software.c
index af7bc41..dbc5524 100644
--- a/drivers/baseband/turbo_sw/bbdev_turbo_software.c
+++ b/drivers/baseband/turbo_sw/bbdev_turbo_software.c
@@ -254,6 +254,7 @@ struct turbo_sw_queue {
        dev_info->min_alignment = 64;
        dev_info->harq_buffer_size = 0;
        dev_info->data_endianness = RTE_LITTLE_ENDIAN;
+       dev_info->device_status = RTE_BBDEV_DEV_NOT_SUPPORTED;
rte_bbdev_log_debug("got device info from %u\n", dev->data->dev_id);
  }
diff --git a/lib/bbdev/rte_bbdev.c b/lib/bbdev/rte_bbdev.c
index 4da8047..38630a2 100644
--- a/lib/bbdev/rte_bbdev.c
+++ b/lib/bbdev/rte_bbdev.c
@@ -1133,3 +1133,25 @@ struct rte_mempool *
        rte_bbdev_log(ERR, "Invalid operation type");
        return NULL;
  }
+
+const char *
+rte_bbdev_device_status_str(enum rte_bbdev_device_status status)
+{
+       static const char * const dev_sta_string[] = {
+               "RTE_BBDEV_DEV_NOSTATUS",
+               "RTE_BBDEV_DEV_NOT_SUPPORTED",
+               "RTE_BBDEV_DEV_RESET",
+               "RTE_BBDEV_DEV_CONFIGURED",
+               "RTE_BBDEV_DEV_ACTIVE",
+               "RTE_BBDEV_DEV_FATAL_ERR",
+               "RTE_BBDEV_DEV_RESTART_REQ",
+               "RTE_BBDEV_DEV_RECONFIG_REQ",
+               "RTE_BBDEV_DEV_CORRECT_ERR",
+       };
+
+       if (status < sizeof(dev_sta_string) / sizeof(char *))
+               return dev_sta_string[status];
+
+       rte_bbdev_log(ERR, "Invalid device status");
+       return NULL;
+}
diff --git a/lib/bbdev/rte_bbdev.h b/lib/bbdev/rte_bbdev.h
index b88c881..9b1ffa4 100644
--- a/lib/bbdev/rte_bbdev.h
+++ b/lib/bbdev/rte_bbdev.h
@@ -223,6 +223,21 @@ struct rte_bbdev_queue_conf {
  int
  rte_bbdev_queue_stop(uint16_t dev_id, uint16_t queue_id);
+/**
+ * Flags indicate the status of the device
+ */
+enum rte_bbdev_device_status {
+       RTE_BBDEV_DEV_NOSTATUS,        /**< Nothing being reported */
+       RTE_BBDEV_DEV_NOT_SUPPORTED,   /**< Device status is not supported on 
the PMD */
+       RTE_BBDEV_DEV_RESET,           /**< Device in reset and un-configured 
state */
+       RTE_BBDEV_DEV_CONFIGURED,      /**< Device is configured and ready to 
use */
+       RTE_BBDEV_DEV_ACTIVE,          /**< Device is configured and VF is 
being used */
+       RTE_BBDEV_DEV_FATAL_ERR,       /**< Device has hit a fatal 
uncorrectable error */
+       RTE_BBDEV_DEV_RESTART_REQ,     /**< Device requires application to 
restart */
+       RTE_BBDEV_DEV_RECONFIG_REQ,    /**< Device requires application to 
reconfigure queues */
+       RTE_BBDEV_DEV_CORRECT_ERR,     /**< Warning of a correctable error 
event happened */
+};

I don't have a strong opinion on this, but I think NOT_SUPPORTED should be a special value. If you want to keep 0 value for NOSTATUS, maybe you could do:

enum rte_bbdev_device_status {
RTE_BBDEV_DEV_NOT_SUPPORTED = -1, /**< Device status is not supported on the PMD */
        RTE_BBDEV_DEV_NOSTATUS = 0,        /**< Nothing being reported */
RTE_BBDEV_DEV_RESET, /**< Device in reset and un-configured state */
...


+
  /** Device statistics. */
  struct rte_bbdev_stats {
        uint64_t enqueued_count;  /**< Count of all operations enqueued */
@@ -285,12 +300,14 @@ struct rte_bbdev_driver_info {
        /** Set if device supports per-queue interrupts */
        bool queue_intr_supported;
        /** Minimum alignment of buffers, in bytes */
-       uint16_t min_alignment;
-       /** HARQ memory available in kB */
+       /** Device Status */
+       enum rte_bbdev_device_status device_status;
        uint32_t harq_buffer_size;
        /** Byte endianness (RTE_BIG_ENDIAN/RTE_LITTLE_ENDIAN) supported
         *  for input/output data
         */
+       uint16_t min_alignment;
+       /** HARQ memory available in kB */
        uint8_t data_endianness;
        /** Default queue configuration used if none is supplied  */
        struct rte_bbdev_queue_conf default_queue_conf;
@@ -827,6 +844,20 @@ typedef void (*rte_bbdev_cb_fn)(uint16_t dev_id,
  rte_bbdev_queue_intr_ctl(uint16_t dev_id, uint16_t queue_id, int epfd, int op,
                void *data);
+/**
+ * Converts device status from enum to string
+ *
+ * @param status
+ *   Device status as enum
+ *
+ * @returns
+ *   Operation type as string or NULL if op_type is invalid
+ *
+ */
+__rte_experimental
+const char*
+rte_bbdev_device_status_str(enum rte_bbdev_device_status status);
+
  #ifdef __cplusplus
  }
  #endif
diff --git a/lib/bbdev/version.map b/lib/bbdev/version.map
index cce3f3c..9ac3643 100644
--- a/lib/bbdev/version.map
+++ b/lib/bbdev/version.map
@@ -39,3 +39,9 @@ DPDK_22 {
local: *;
  };
+
+EXPERIMENTAL {
+       global:
+

We now add the version the new API was introduced in as a comment:

        # added in 22.11
+       rte_bbdev_device_status_str;
+};

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