From patchwork Wed Nov 16 16:38:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 626862 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3B98C433FE for ; Wed, 16 Nov 2022 16:44:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234347AbiKPQoN (ORCPT ); Wed, 16 Nov 2022 11:44:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57206 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236162AbiKPQn1 (ORCPT ); Wed, 16 Nov 2022 11:43:27 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF19C1BE8E for ; Wed, 16 Nov 2022 08:39:39 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 86B77B81DDC for ; Wed, 16 Nov 2022 16:39:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A6EDEC433C1; Wed, 16 Nov 2022 16:39:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1668616777; bh=nbbzjkB11pnpzCTeO2d39qrlIZCcDKB4ymr1nraM/c4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EIxAi5BZRjFLBkISk51bCFb0n8HM0c9ccBaZoCpBhjxBhsPAfZqSQhJlwpL9+KlJP htqdInSPYqLdKdiFcRRDLNr5DR8IX41N3wc+TyjDDtmrKmL2hTyDftx27zNZJ/yjxg 7vTR6C6HqiUwD/bobRHwPr5ysgP4TQ0W4ifFarMDd6vuuKA+wO6GC5iTBFkcinzHq6 R+82O5ww8b22cTjtasW2Ha7pAPHMLfvl1Myk57C+zdEWNVCDtSYRtDwcTr0bYuLQyA iFL1ukYyUZmwain8Edo/oBN1W57beRC7mpDyVADVrS5pIsCZ4X/k+Ozs1qj0CgANWf 4AD9NCeCV+fNQ== From: Kalle Valo To: linux-wireless@vger.kernel.org Cc: ath12k@lists.infradead.org Subject: [PATCH v2 28/50] wifi: ath12k: add htc.h Date: Wed, 16 Nov 2022 18:38:40 +0200 Message-Id: <20221116163902.24996-29-kvalo@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221116163902.24996-1-kvalo@kernel.org> References: <20221116163902.24996-1-kvalo@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Kalle Valo (Patches split into one patch per file for easier review, but the final commit will be one big patch. See the cover letter for more info.) Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath12k/htc.h | 316 ++++++++++++++++++++++++++++++++++ 1 file changed, 316 insertions(+) diff --git a/drivers/net/wireless/ath/ath12k/htc.h b/drivers/net/wireless/ath/ath12k/htc.h new file mode 100644 index 000000000000..7e3dccc7cc14 --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/htc.h @@ -0,0 +1,316 @@ +/* SPDX-License-Identifier: BSD-3-Clause-Clear */ +/* + * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved. + * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef ATH12K_HTC_H +#define ATH12K_HTC_H + +#include +#include +#include +#include +#include + +struct ath12k_base; + +#define HTC_HDR_ENDPOINTID GENMASK(7, 0) +#define HTC_HDR_FLAGS GENMASK(15, 8) +#define HTC_HDR_PAYLOADLEN GENMASK(31, 16) +#define HTC_HDR_CONTROLBYTES0 GENMASK(7, 0) +#define HTC_HDR_CONTROLBYTES1 GENMASK(15, 8) +#define HTC_HDR_RESERVED GENMASK(31, 16) + +#define HTC_SVC_MSG_SERVICE_ID GENMASK(31, 16) +#define HTC_SVC_MSG_CONNECTIONFLAGS GENMASK(15, 0) +#define HTC_SVC_MSG_SERVICEMETALENGTH GENMASK(23, 16) +#define HTC_READY_MSG_CREDITCOUNT GENMASK(31, 16) +#define HTC_READY_MSG_CREDITSIZE GENMASK(15, 0) +#define HTC_READY_MSG_MAXENDPOINTS GENMASK(23, 16) + +#define HTC_READY_EX_MSG_HTCVERSION GENMASK(7, 0) +#define HTC_READY_EX_MSG_MAXMSGSPERHTCBUNDLE GENMASK(15, 8) + +#define HTC_SVC_RESP_MSG_SERVICEID GENMASK(31, 16) +#define HTC_SVC_RESP_MSG_STATUS GENMASK(7, 0) +#define HTC_SVC_RESP_MSG_ENDPOINTID GENMASK(15, 8) +#define HTC_SVC_RESP_MSG_MAXMSGSIZE GENMASK(31, 16) +#define HTC_SVC_RESP_MSG_SERVICEMETALENGTH GENMASK(7, 0) + +#define HTC_MSG_MESSAGEID GENMASK(15, 0) +#define HTC_SETUP_COMPLETE_EX_MSG_SETUPFLAGS GENMASK(31, 0) +#define HTC_SETUP_COMPLETE_EX_MSG_MAXMSGSPERBUNDLEDRECV GENMASK(7, 0) +#define HTC_SETUP_COMPLETE_EX_MSG_RSVD0 GENMASK(15, 8) +#define HTC_SETUP_COMPLETE_EX_MSG_RSVD1 GENMASK(23, 16) +#define HTC_SETUP_COMPLETE_EX_MSG_RSVD2 GENMASK(31, 24) + +enum ath12k_htc_tx_flags { + ATH12K_HTC_FLAG_NEED_CREDIT_UPDATE = 0x01, + ATH12K_HTC_FLAG_SEND_BUNDLE = 0x02 +}; + +enum ath12k_htc_rx_flags { + ATH12K_HTC_FLAG_TRAILER_PRESENT = 0x02, + ATH12K_HTC_FLAG_BUNDLE_MASK = 0xF0 +}; + +struct ath12k_htc_hdr { + __le32 htc_info; + __le32 ctrl_info; +} __packed __aligned(4); + +enum ath12k_htc_msg_id { + ATH12K_HTC_MSG_READY_ID = 1, + ATH12K_HTC_MSG_CONNECT_SERVICE_ID = 2, + ATH12K_HTC_MSG_CONNECT_SERVICE_RESP_ID = 3, + ATH12K_HTC_MSG_SETUP_COMPLETE_ID = 4, + ATH12K_HTC_MSG_SETUP_COMPLETE_EX_ID = 5, + ATH12K_HTC_MSG_SEND_SUSPEND_COMPLETE = 6, + ATH12K_HTC_MSG_NACK_SUSPEND = 7, + ATH12K_HTC_MSG_WAKEUP_FROM_SUSPEND_ID = 8, +}; + +enum ath12k_htc_version { + ATH12K_HTC_VERSION_2P0 = 0x00, /* 2.0 */ + ATH12K_HTC_VERSION_2P1 = 0x01, /* 2.1 */ +}; + +enum ath12k_htc_conn_flag_threshold_level { + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH, + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF, + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS, + ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY, +}; + +#define ATH12K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK GENMASK(1, 0) +#define ATH12K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE BIT(2) +#define ATH12K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL BIT(3) +#define ATH12K_HTC_CONN_FLAGS_RECV_ALLOC GENMASK(15, 8) + +enum ath12k_htc_conn_svc_status { + ATH12K_HTC_CONN_SVC_STATUS_SUCCESS = 0, + ATH12K_HTC_CONN_SVC_STATUS_NOT_FOUND = 1, + ATH12K_HTC_CONN_SVC_STATUS_FAILED = 2, + ATH12K_HTC_CONN_SVC_STATUS_NO_RESOURCES = 3, + ATH12K_HTC_CONN_SVC_STATUS_NO_MORE_EP = 4 +}; + +struct ath12k_htc_ready { + __le32 id_credit_count; + __le32 size_ep; +} __packed; + +struct ath12k_htc_ready_extended { + struct ath12k_htc_ready base; + __le32 ver_bundle; +} __packed; + +struct ath12k_htc_conn_svc { + __le32 msg_svc_id; + __le32 flags_len; +} __packed; + +struct ath12k_htc_conn_svc_resp { + __le32 msg_svc_id; + __le32 flags_len; + __le32 svc_meta_pad; +} __packed; + +struct ath12k_htc_setup_complete_extended { + __le32 msg_id; + __le32 flags; + __le32 max_msgs_per_bundled_recv; +} __packed; + +struct ath12k_htc_msg { + __le32 msg_svc_id; + __le32 flags_len; +} __packed __aligned(4); + +enum ath12k_htc_record_id { + ATH12K_HTC_RECORD_NULL = 0, + ATH12K_HTC_RECORD_CREDITS = 1 +}; + +struct ath12k_htc_record_hdr { + u8 id; /* @enum ath12k_htc_record_id */ + u8 len; + u8 pad0; + u8 pad1; +} __packed; + +struct ath12k_htc_credit_report { + u8 eid; /* @enum ath12k_htc_ep_id */ + u8 credits; + u8 pad0; + u8 pad1; +} __packed; + +struct ath12k_htc_record { + struct ath12k_htc_record_hdr hdr; + struct ath12k_htc_credit_report credit_report[]; +} __packed __aligned(4); + +/* HTC FRAME structure layout draft + * + * note: the trailer offset is dynamic depending + * on payload length. this is only a struct layout draft + * + *======================================================= + * + * HTC HEADER + * + *======================================================= + * | + * HTC message | payload + * (variable length) | (variable length) + *======================================================= + * + * HTC Record + * + *======================================================= + */ + +enum ath12k_htc_svc_gid { + ATH12K_HTC_SVC_GRP_RSVD = 0, + ATH12K_HTC_SVC_GRP_WMI = 1, + ATH12K_HTC_SVC_GRP_NMI = 2, + ATH12K_HTC_SVC_GRP_HTT = 3, + ATH12K_HTC_SVC_GRP_CFG = 4, + ATH12K_HTC_SVC_GRP_IPA = 5, + ATH12K_HTC_SVC_GRP_PKTLOG = 6, + + ATH12K_HTC_SVC_GRP_TEST = 254, + ATH12K_HTC_SVC_GRP_LAST = 255, +}; + +#define SVC(group, idx) \ + (int)(((int)(group) << 8) | (int)(idx)) + +enum ath12k_htc_svc_id { + /* NOTE: service ID of 0x0000 is reserved and should never be used */ + ATH12K_HTC_SVC_ID_RESERVED = 0x0000, + ATH12K_HTC_SVC_ID_UNUSED = ATH12K_HTC_SVC_ID_RESERVED, + + ATH12K_HTC_SVC_ID_RSVD_CTRL = SVC(ATH12K_HTC_SVC_GRP_RSVD, 1), + ATH12K_HTC_SVC_ID_WMI_CONTROL = SVC(ATH12K_HTC_SVC_GRP_WMI, 0), + ATH12K_HTC_SVC_ID_WMI_DATA_BE = SVC(ATH12K_HTC_SVC_GRP_WMI, 1), + ATH12K_HTC_SVC_ID_WMI_DATA_BK = SVC(ATH12K_HTC_SVC_GRP_WMI, 2), + ATH12K_HTC_SVC_ID_WMI_DATA_VI = SVC(ATH12K_HTC_SVC_GRP_WMI, 3), + ATH12K_HTC_SVC_ID_WMI_DATA_VO = SVC(ATH12K_HTC_SVC_GRP_WMI, 4), + ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC1 = SVC(ATH12K_HTC_SVC_GRP_WMI, 5), + ATH12K_HTC_SVC_ID_WMI_CONTROL_MAC2 = SVC(ATH12K_HTC_SVC_GRP_WMI, 6), + ATH12K_HTC_SVC_ID_WMI_CONTROL_DIAG = SVC(ATH12K_HTC_SVC_GRP_WMI, 7), + + ATH12K_HTC_SVC_ID_NMI_CONTROL = SVC(ATH12K_HTC_SVC_GRP_NMI, 0), + ATH12K_HTC_SVC_ID_NMI_DATA = SVC(ATH12K_HTC_SVC_GRP_NMI, 1), + + ATH12K_HTC_SVC_ID_HTT_DATA_MSG = SVC(ATH12K_HTC_SVC_GRP_HTT, 0), + + /* raw stream service (i.e. flash, tcmd, calibration apps) */ + ATH12K_HTC_SVC_ID_TEST_RAW_STREAMS = SVC(ATH12K_HTC_SVC_GRP_TEST, 0), + ATH12K_HTC_SVC_ID_IPA_TX = SVC(ATH12K_HTC_SVC_GRP_IPA, 0), + ATH12K_HTC_SVC_ID_PKT_LOG = SVC(ATH12K_HTC_SVC_GRP_PKTLOG, 0), +}; + +#undef SVC + +enum ath12k_htc_ep_id { + ATH12K_HTC_EP_UNUSED = -1, + ATH12K_HTC_EP_0 = 0, + ATH12K_HTC_EP_1 = 1, + ATH12K_HTC_EP_2, + ATH12K_HTC_EP_3, + ATH12K_HTC_EP_4, + ATH12K_HTC_EP_5, + ATH12K_HTC_EP_6, + ATH12K_HTC_EP_7, + ATH12K_HTC_EP_8, + ATH12K_HTC_EP_COUNT, +}; + +struct ath12k_htc_ep_ops { + void (*ep_tx_complete)(struct ath12k_base *ab, struct sk_buff *skb); + void (*ep_rx_complete)(struct ath12k_base *ab, struct sk_buff *skb); + void (*ep_tx_credits)(struct ath12k_base *ab); +}; + +/* service connection information */ +struct ath12k_htc_svc_conn_req { + u16 service_id; + struct ath12k_htc_ep_ops ep_ops; + int max_send_queue_depth; +}; + +/* service connection response information */ +struct ath12k_htc_svc_conn_resp { + u8 buffer_len; + u8 actual_len; + enum ath12k_htc_ep_id eid; + unsigned int max_msg_len; + u8 connect_resp_code; +}; + +#define ATH12K_NUM_CONTROL_TX_BUFFERS 2 +#define ATH12K_HTC_MAX_LEN 4096 +#define ATH12K_HTC_MAX_CTRL_MSG_LEN 256 +#define ATH12K_HTC_WAIT_TIMEOUT_HZ (1 * HZ) +#define ATH12K_HTC_CONTROL_BUFFER_SIZE (ATH12K_HTC_MAX_CTRL_MSG_LEN + \ + sizeof(struct ath12k_htc_hdr)) +#define ATH12K_HTC_CONN_SVC_TIMEOUT_HZ (1 * HZ) +#define ATH12K_HTC_MAX_SERVICE_ALLOC_ENTRIES 8 + +struct ath12k_htc_ep { + struct ath12k_htc *htc; + enum ath12k_htc_ep_id eid; + enum ath12k_htc_svc_id service_id; + struct ath12k_htc_ep_ops ep_ops; + + int max_tx_queue_depth; + int max_ep_message_len; + u8 ul_pipe_id; + u8 dl_pipe_id; + + u8 seq_no; /* for debugging */ + int tx_credits; + bool tx_credit_flow_enabled; +}; + +struct ath12k_htc_svc_tx_credits { + u16 service_id; + u8 credit_allocation; +}; + +struct ath12k_htc { + struct ath12k_base *ab; + struct ath12k_htc_ep endpoint[ATH12K_HTC_EP_COUNT]; + + /* protects endpoints */ + spinlock_t tx_lock; + + u8 control_resp_buffer[ATH12K_HTC_MAX_CTRL_MSG_LEN]; + int control_resp_len; + + struct completion ctl_resp; + + int total_transmit_credits; + struct ath12k_htc_svc_tx_credits + service_alloc_table[ATH12K_HTC_MAX_SERVICE_ALLOC_ENTRIES]; + int target_credit_size; + u8 wmi_ep_count; +}; + +int ath12k_htc_init(struct ath12k_base *ar); +int ath12k_htc_wait_target(struct ath12k_htc *htc); +int ath12k_htc_start(struct ath12k_htc *htc); +int ath12k_htc_connect_service(struct ath12k_htc *htc, + struct ath12k_htc_svc_conn_req *conn_req, + struct ath12k_htc_svc_conn_resp *conn_resp); +int ath12k_htc_send(struct ath12k_htc *htc, enum ath12k_htc_ep_id eid, + struct sk_buff *packet); +struct sk_buff *ath12k_htc_alloc_skb(struct ath12k_base *ar, int size); +void ath12k_htc_rx_completion_handler(struct ath12k_base *ar, + struct sk_buff *skb); + +#endif