net/bnxt: fix device readiness check

Fix HWRM_VER_GET command to handle DEV_NOT_RDY state.

Driver should fail probe if the device is not ready.
Conversely, the HWRM_VER_GET poll after reset can safely
retry until the existing timeout is exceeded.

Fixes: 804e746c7b73 ("net/bnxt: add hardware resource manager init code")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 02b0a21..5ef0845 100644 (file)
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -1217,6 +1217,11 @@ int bnxt_hwrm_ver_get(struct bnxt *bp, uint32_t timeout)
        else
                HWRM_CHECK_RESULT();
 
+       if (resp->flags & HWRM_VER_GET_OUTPUT_FLAGS_DEV_NOT_RDY) {
+               rc = -EAGAIN;
+               goto error;
+       }
+
        PMD_DRV_LOG(INFO, "%d.%d.%d:%d.%d.%d.%d\n",
                resp->hwrm_intf_maj_8b, resp->hwrm_intf_min_8b,
                resp->hwrm_intf_upd_8b, resp->hwrm_fw_maj_8b,
@@ -6045,6 +6050,10 @@ int bnxt_hwrm_poll_ver_get(struct bnxt *bp)
        rc = bnxt_hwrm_send_message(bp, &req, sizeof(req), BNXT_USE_CHIMP_MB);
 
        HWRM_CHECK_RESULT_SILENT();
+
+       if (resp->flags & HWRM_VER_GET_OUTPUT_FLAGS_DEV_NOT_RDY)
+               rc = -EAGAIN;
+
        HWRM_UNLOCK();
 
        return rc;