From patchwork Tue Apr 20 16:13:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kumar, M Chetan" X-Patchwork-Id: 12214599 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8C26C43460 for ; Tue, 20 Apr 2021 16:14:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7A8361003 for ; Tue, 20 Apr 2021 16:14:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233181AbhDTQPL (ORCPT ); Tue, 20 Apr 2021 12:15:11 -0400 Received: from mga05.intel.com ([192.55.52.43]:42702 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233176AbhDTQPJ (ORCPT ); Tue, 20 Apr 2021 12:15:09 -0400 IronPort-SDR: E9QZIJISPx1L7IA1OnS3KDwO0Rdf/9GiaHrvHf8E6mS1TAUVVkJheao7BfPXGKsbQli4RsgwrS Mw9rMOYJ7vfw== X-IronPort-AV: E=McAfee;i="6200,9189,9960"; a="280865957" X-IronPort-AV: E=Sophos;i="5.82,237,1613462400"; d="scan'208";a="280865957" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2021 09:14:36 -0700 IronPort-SDR: 32qrF0K/p6B1B35XgvWk2ix1j4lrTkC8ka8Jm97ceicuOtB3n/cSKKoyVErLqmCfTnuQnbXiuL +5phtrFI+wDQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,237,1613462400"; d="scan'208";a="454883170" Received: from bgsxx0031.iind.intel.com ([10.106.222.40]) by fmsmga002.fm.intel.com with ESMTP; 20 Apr 2021 09:14:35 -0700 From: M Chetan Kumar To: netdev@vger.kernel.org, linux-wireless@vger.kernel.org Cc: johannes@sipsolutions.net, krishna.c.sudi@intel.com, linuxwwan@intel.com Subject: [PATCH V2 06/16] net: iosm: channel configuration Date: Tue, 20 Apr 2021 21:43:00 +0530 Message-Id: <20210420161310.16189-7-m.chetan.kumar@intel.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20210420161310.16189-1-m.chetan.kumar@intel.com> References: <20210420161310.16189-1-m.chetan.kumar@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Defines pipes & channel configurations like channel type, pipe mappings, No. of transfer descriptors and transfer buffer size etc. Signed-off-by: M Chetan Kumar --- v2: * Return proper error code instead of returning -1. * Define IPC channels in serial order. --- drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.c | 82 +++++++++++++++++++++++ drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h | 55 +++++++++++++++ 2 files changed, 137 insertions(+) create mode 100644 drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.c create mode 100644 drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h diff --git a/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.c b/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.c new file mode 100644 index 000000000000..d45c9eac300d --- /dev/null +++ b/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2020-21 Intel Corporation. + */ + +#include "iosm_ipc_chnl_cfg.h" + +/* Max. sizes of a downlink buffers */ +#define IPC_MEM_MAX_DL_FLASH_BUF_SIZE (16 * 1024) +#define IPC_MEM_MAX_DL_LOOPBACK_SIZE (1 * 1024 * 1024) +#define IPC_MEM_MAX_DL_AT_BUF_SIZE 2048 +#define IPC_MEM_MAX_DL_RPC_BUF_SIZE (32 * 1024) +#define IPC_MEM_MAX_DL_MBIM_BUF_SIZE IPC_MEM_MAX_DL_RPC_BUF_SIZE + +/* Max. transfer descriptors for a pipe. */ +#define IPC_MEM_MAX_TDS_FLASH_DL 3 +#define IPC_MEM_MAX_TDS_FLASH_UL 6 +#define IPC_MEM_MAX_TDS_AT 4 +#define IPC_MEM_MAX_TDS_RPC 4 +#define IPC_MEM_MAX_TDS_MBIM IPC_MEM_MAX_TDS_RPC +#define IPC_MEM_MAX_TDS_LOOPBACK 11 + +/* Accumulation backoff usec */ +#define IRQ_ACC_BACKOFF_OFF 0 + +/* MUX acc backoff 1ms */ +#define IRQ_ACC_BACKOFF_MUX 1000 + +/* Modem channel configuration table + * Always reserve element zero for flash channel. + */ +static struct ipc_chnl_cfg modem_cfg[] = { + /* IP Mux */ + { IPC_MEM_MUX_IP_CH_IF_ID, IPC_MEM_PIPE_0, IPC_MEM_PIPE_1, + IPC_MEM_MAX_TDS_MUX_LITE_UL, IPC_MEM_MAX_TDS_MUX_LITE_DL, + IPC_MEM_MAX_DL_MUX_LITE_BUF_SIZE }, + /* RPC - 0 */ + { IPC_WWAN_DSS_ID_0, IPC_MEM_PIPE_2, IPC_MEM_PIPE_3, + IPC_MEM_MAX_TDS_RPC, IPC_MEM_MAX_TDS_RPC, + IPC_MEM_MAX_DL_RPC_BUF_SIZE }, + /* IAT0 */ + { IPC_WWAN_DSS_ID_1, IPC_MEM_PIPE_4, IPC_MEM_PIPE_5, IPC_MEM_MAX_TDS_AT, + IPC_MEM_MAX_TDS_AT, IPC_MEM_MAX_DL_AT_BUF_SIZE }, + /* Trace */ + { IPC_WWAN_DSS_ID_2, IPC_MEM_PIPE_6, IPC_MEM_PIPE_7, IPC_MEM_TDS_TRC, + IPC_MEM_TDS_TRC, IPC_MEM_MAX_DL_TRC_BUF_SIZE }, + /* IAT1 */ + { IPC_WWAN_DSS_ID_3, IPC_MEM_PIPE_8, IPC_MEM_PIPE_9, IPC_MEM_MAX_TDS_AT, + IPC_MEM_MAX_TDS_AT, IPC_MEM_MAX_DL_AT_BUF_SIZE }, + /* Loopback */ + { IPC_WWAN_DSS_ID_4, IPC_MEM_PIPE_10, IPC_MEM_PIPE_11, + IPC_MEM_MAX_TDS_LOOPBACK, IPC_MEM_MAX_TDS_LOOPBACK, + IPC_MEM_MAX_DL_LOOPBACK_SIZE }, + /* MBIM Channel */ + { IPC_MEM_MBIM_CTRL_CH_ID, IPC_MEM_PIPE_12, IPC_MEM_PIPE_13, + IPC_MEM_MAX_TDS_MBIM, IPC_MEM_MAX_TDS_MBIM, + IPC_MEM_MAX_DL_MBIM_BUF_SIZE }, +}; + +int ipc_chnl_cfg_get(struct ipc_chnl_cfg *chnl_cfg, int index) +{ + int array_size = ARRAY_SIZE(modem_cfg); + + if (index >= array_size) { + pr_err("index: %d and array_size %d", index, array_size); + return -ECHRNG; + } + + if (index == IPC_MEM_MUX_IP_CH_IF_ID) + chnl_cfg->accumulation_backoff = IRQ_ACC_BACKOFF_MUX; + else + chnl_cfg->accumulation_backoff = IRQ_ACC_BACKOFF_OFF; + + chnl_cfg->ul_nr_of_entries = modem_cfg[index].ul_nr_of_entries; + chnl_cfg->dl_nr_of_entries = modem_cfg[index].dl_nr_of_entries; + chnl_cfg->dl_buf_size = modem_cfg[index].dl_buf_size; + chnl_cfg->id = modem_cfg[index].id; + chnl_cfg->ul_pipe = modem_cfg[index].ul_pipe; + chnl_cfg->dl_pipe = modem_cfg[index].dl_pipe; + + return 0; +} diff --git a/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h b/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h new file mode 100644 index 000000000000..00a2cc9b7a54 --- /dev/null +++ b/drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (C) 2020-21 Intel Corporation + */ + +#ifndef IOSM_IPC_CHNL_CFG_H +#define IOSM_IPC_CHNL_CFG_H + +#include "iosm_ipc_mux.h" + +/* Number of TDs on the trace channel */ +#define IPC_MEM_TDS_TRC 32 + +/* Trace channel TD buffer size. */ +#define IPC_MEM_MAX_DL_TRC_BUF_SIZE 8192 + +/* Type of the WWAN ID */ +enum ipc_wwan_id { + IPC_WWAN_DSS_ID_0 = 257, + IPC_WWAN_DSS_ID_1, + IPC_WWAN_DSS_ID_2, + IPC_WWAN_DSS_ID_3, + IPC_WWAN_DSS_ID_4, +}; + +/** + * struct ipc_chnl_cfg - IPC channel configuration structure + * @id: Interface ID + * @ul_pipe: Uplink datastream + * @dl_pipe: Downlink datastream + * @ul_nr_of_entries: Number of Transfer descriptor uplink pipe + * @dl_nr_of_entries: Number of Transfer descriptor downlink pipe + * @dl_buf_size: Downlink buffer size + * @accumulation_backoff: Time in usec for data accumalation + */ +struct ipc_chnl_cfg { + int id; + u32 ul_pipe; + u32 dl_pipe; + u32 ul_nr_of_entries; + u32 dl_nr_of_entries; + u32 dl_buf_size; + u32 accumulation_backoff; +}; + +/** + * ipc_chnl_cfg_get - Get pipe configuration. + * @chnl_cfg: Array of ipc_chnl_cfg struct + * @index: Channel index (upto MAX_CHANNELS) + * + * Return: 0 on success and failure value on error + */ +int ipc_chnl_cfg_get(struct ipc_chnl_cfg *chnl_cfg, int index); + +#endif