From 1adaea57cac0a15ceeb49564d1f25aea0743e44a Mon Sep 17 00:00:00 2001 From: Vijay Kumar Srivastava Date: Tue, 16 Mar 2021 11:58:30 +0300 Subject: [PATCH] common/sfc_efx: support getting device class Device class argument would be used to select compatible driver. Driver probe would be skipped for incompatible device class. Signed-off-by: Vijay Kumar Srivastava Signed-off-by: Andrew Rybchenko --- drivers/common/sfc_efx/sfc_efx.c | 49 ++++++++++++++++++++++++++++++ drivers/common/sfc_efx/sfc_efx.h | 34 +++++++++++++++++++++ drivers/common/sfc_efx/version.map | 2 ++ 3 files changed, 85 insertions(+) create mode 100644 drivers/common/sfc_efx/sfc_efx.h diff --git a/drivers/common/sfc_efx/sfc_efx.c b/drivers/common/sfc_efx/sfc_efx.c index d7a84c9835..a3146db255 100644 --- a/drivers/common/sfc_efx/sfc_efx.c +++ b/drivers/common/sfc_efx/sfc_efx.c @@ -7,12 +7,61 @@ * for Solarflare) and Solarflare Communications, Inc. */ +#include #include +#include +#include #include "sfc_efx_log.h" +#include "sfc_efx.h" uint32_t sfc_efx_logtype; +static int +sfc_efx_kvarg_dev_class_handler(__rte_unused const char *key, + const char *class_str, void *opaque) +{ + enum sfc_efx_dev_class *dev_class = opaque; + + if (class_str == NULL) + return *dev_class; + + if (strcmp(class_str, "vdpa") == 0) { + *dev_class = SFC_EFX_DEV_CLASS_VDPA; + } else if (strcmp(class_str, "net") == 0) { + *dev_class = SFC_EFX_DEV_CLASS_NET; + } else { + SFC_EFX_LOG(ERR, "Unsupported class %s.", class_str); + *dev_class = SFC_EFX_DEV_CLASS_INVALID; + } + + return 0; +} + +enum sfc_efx_dev_class +sfc_efx_dev_class_get(struct rte_devargs *devargs) +{ + struct rte_kvargs *kvargs; + const char *key = SFC_EFX_KVARG_DEV_CLASS; + enum sfc_efx_dev_class dev_class = SFC_EFX_DEV_CLASS_NET; + + if (devargs == NULL) + return dev_class; + + kvargs = rte_kvargs_parse(devargs->args, NULL); + if (kvargs == NULL) + return dev_class; + + if (rte_kvargs_count(kvargs, key) != 0) { + rte_kvargs_process(kvargs, key, sfc_efx_kvarg_dev_class_handler, + &dev_class); + } + + rte_kvargs_free(kvargs); + + return dev_class; +} + RTE_INIT(sfc_efx_register_logtype) { int ret; diff --git a/drivers/common/sfc_efx/sfc_efx.h b/drivers/common/sfc_efx/sfc_efx.h new file mode 100644 index 0000000000..f2aff0b4e8 --- /dev/null +++ b/drivers/common/sfc_efx/sfc_efx.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * + * Copyright(c) 2019-2021 Xilinx, Inc. + * Copyright(c) 2019 Solarflare Communications Inc. + * + * This software was jointly developed between OKTET Labs (under contract + * for Solarflare) and Solarflare Communications, Inc. + */ + +#ifndef _SFC_EFX_H_ +#define _SFC_EFX_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#define SFC_EFX_KVARG_DEV_CLASS "class" + +enum sfc_efx_dev_class { + SFC_EFX_DEV_CLASS_INVALID = 0, + SFC_EFX_DEV_CLASS_NET, + SFC_EFX_DEV_CLASS_VDPA, + + SFC_EFX_DEV_NCLASS +}; + +__rte_internal +enum sfc_efx_dev_class sfc_efx_dev_class_get(struct rte_devargs *devargs); + +#ifdef __cplusplus +} +#endif + +#endif /* _SFC_EFX_H_ */ diff --git a/drivers/common/sfc_efx/version.map b/drivers/common/sfc_efx/version.map index 403feeaf11..a3345d34f7 100644 --- a/drivers/common/sfc_efx/version.map +++ b/drivers/common/sfc_efx/version.map @@ -221,6 +221,8 @@ INTERNAL { efx_txq_nbufs; efx_txq_size; + sfc_efx_dev_class_get; + sfc_efx_mcdi_init; sfc_efx_mcdi_fini; -- 2.20.1