From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id EA4C0A052A; Fri, 10 Jul 2020 11:51:11 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id DAC4A1E4ED; Fri, 10 Jul 2020 11:49:20 +0200 (CEST) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id CEE661DDE1 for ; Fri, 10 Jul 2020 11:49:05 +0200 (CEST) Received: from Internal Mail-Server by MTLPINE1 (envelope-from viacheslavo@mellanox.com) with SMTP; 10 Jul 2020 12:49:02 +0300 Received: from pegasus12.mtr.labs.mlnx (pegasus12.mtr.labs.mlnx [10.210.17.40]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 06A9n1Ji012344; Fri, 10 Jul 2020 12:49:01 +0300 Received: from pegasus12.mtr.labs.mlnx (localhost [127.0.0.1]) by pegasus12.mtr.labs.mlnx (8.14.7/8.14.7) with ESMTP id 06A9n1rS024778; Fri, 10 Jul 2020 09:49:01 GMT Received: (from viacheslavo@localhost) by pegasus12.mtr.labs.mlnx (8.14.7/8.14.7/Submit) id 06A9n12o024777; Fri, 10 Jul 2020 09:49:01 GMT X-Authentication-Warning: pegasus12.mtr.labs.mlnx: viacheslavo set sender to viacheslavo@mellanox.com using -f From: Viacheslav Ovsiienko To: dev@dpdk.org Cc: matan@mellanox.com, rasland@mellanox.com, thomas@monjalon.net, ferruh.yigit@intel.com Date: Fri, 10 Jul 2020 09:48:50 +0000 Message-Id: <1594374530-24659-16-git-send-email-viacheslavo@mellanox.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1594374530-24659-1-git-send-email-viacheslavo@mellanox.com> References: <1594374530-24659-1-git-send-email-viacheslavo@mellanox.com> Subject: [dpdk-dev] [PATCH v1 16/16] common/mlx5: add register access DevX routine X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The DevX routine to read/write NIC registers via DevX API is added. This is the preparation step to check timestamp modes and units and gather the extended statistics. Signed-off-by: Viacheslav Ovsiienko --- drivers/common/mlx5/mlx5_devx_cmds.c | 57 +++++++++++++++++++++++++ drivers/common/mlx5/mlx5_devx_cmds.h | 4 ++ drivers/common/mlx5/mlx5_prm.h | 25 +++++++++++ drivers/common/mlx5/rte_common_mlx5_version.map | 1 + 4 files changed, 87 insertions(+) diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c index 093636c..5b99e11 100644 --- a/drivers/common/mlx5/mlx5_devx_cmds.c +++ b/drivers/common/mlx5/mlx5_devx_cmds.c @@ -12,6 +12,63 @@ /** + * Perform access to the registers. Reads data from and writes data to + * the specified register. + * + * @param[in] ctx + * Context returned from mlx5 open_device() glue function. + * @param[in] reg_id + * Register identifier according to the PRM. + * @param[in] arg + * Register access auxiliary parameter according to the PRM. + * @param[inout] value + * Pointer to the value to be wriiten to the register or + * to the buffer where the read data to be stored. + * @param[in] write + * Non-zero value means write to the register should be performed, + * otherwise read access will be performed. + * + * @return + * 0 on success, a negative value otherwise. + */ +int +mlx5_devx_cmd_register_access(void *ctx, uint16_t reg_id, + uint32_t arg, uint32_t *value, + uint32_t write) +{ + uint32_t in[MLX5_ST_SZ_DW(access_register_in)] = {0}; + uint32_t out[MLX5_ST_SZ_DW(access_register_out)] = {0}; + int status, rc; + + MLX5_SET(access_register_in, in, opcode, MLX5_CMD_OP_ACCESS_REGISTER); + MLX5_SET(access_register_in, in, op_mod, write ? + MLX5_ACCESS_REGISTER_IN_OP_MOD_WRITE : + MLX5_ACCESS_REGISTER_IN_OP_MOD_READ); + MLX5_SET(access_register_in, in, register_id, reg_id); + MLX5_SET(access_register_in, in, argument, arg); + if (write && value) + MLX5_SET(access_register_in, in, register_data, *value); + rc = mlx5_glue->devx_general_cmd(ctx, in, sizeof(in), out, sizeof(out)); + if (rc) + goto error; + status = MLX5_GET(access_register_out, out, status); + if (status) { + int syndrome = MLX5_GET(access_register_out, out, syndrome); + + DRV_LOG(DEBUG, "Failed to access NIC register 0x%X, " + "status %x, syndrome = %x", + reg_id, status, syndrome); + return -1; + } + if (value && !write) + *value = MLX5_GET(access_register_out, out, register_data); + return 0; +error: + rc = (rc > 0) ? -rc : rc; + return rc; +}; + +/** * Allocate flow counters via devx interface. * * @param[in] ctx diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h index c79b349..119479d 100644 --- a/drivers/common/mlx5/mlx5_devx_cmds.h +++ b/drivers/common/mlx5/mlx5_devx_cmds.h @@ -383,6 +383,10 @@ int mlx5_devx_cmd_modify_qp_state(struct mlx5_devx_obj *qp, int mlx5_devx_cmd_modify_rqt(struct mlx5_devx_obj *rqt, struct mlx5_devx_rqt_attr *rqt_attr); +__rte_internal +int mlx5_devx_cmd_register_access(void *ctx, uint16_t reg_id, + uint32_t arg, uint32_t *value, + uint32_t write); /** * Create virtio queue counters object DevX API. * diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h index 8705b42..6575edc 100644 --- a/drivers/common/mlx5/mlx5_prm.h +++ b/drivers/common/mlx5/mlx5_prm.h @@ -776,6 +776,7 @@ enum { MLX5_CMD_OP_SUSPEND_QP = 0x50F, MLX5_CMD_OP_RESUME_QP = 0x510, MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT = 0x754, + MLX5_CMD_OP_ACCESS_REGISTER = 0x805, MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN = 0x816, MLX5_CMD_OP_CREATE_TIR = 0x900, MLX5_CMD_OP_CREATE_SQ = 0X904, @@ -2545,6 +2546,30 @@ struct mlx5_ifc_set_pp_rate_limit_context_bits { u8 reserved_at_60[0x120]; }; +struct mlx5_ifc_access_register_out_bits { + u8 status[0x8]; + u8 reserved_at_8[0x18]; + u8 syndrome[0x20]; + u8 reserved_at_40[0x40]; + u8 register_data[0][0x20]; +}; + +enum { + MLX5_ACCESS_REGISTER_IN_OP_MOD_WRITE = 0x0, + MLX5_ACCESS_REGISTER_IN_OP_MOD_READ = 0x1, +}; + +struct mlx5_ifc_access_register_in_bits { + u8 opcode[0x10]; + u8 reserved_at_10[0x10]; + u8 reserved_at_20[0x10]; + u8 op_mod[0x10]; + u8 reserved_at_40[0x10]; + u8 register_id[0x10]; + u8 argument[0x20]; + u8 register_data[0][0x20]; +}; + /* CQE format mask. */ #define MLX5E_CQE_FORMAT_MASK 0xc diff --git a/drivers/common/mlx5/rte_common_mlx5_version.map b/drivers/common/mlx5/rte_common_mlx5_version.map index ae57ebd..123b460 100644 --- a/drivers/common/mlx5/rte_common_mlx5_version.map +++ b/drivers/common/mlx5/rte_common_mlx5_version.map @@ -34,6 +34,7 @@ INTERNAL { mlx5_devx_cmd_query_hca_attr; mlx5_devx_cmd_query_virtio_q_counters; mlx5_devx_cmd_query_virtq; + mlx5_devx_cmd_register_access; mlx5_devx_get_out_command_status; mlx5_get_ifname_sysfs; -- 1.8.3.1