From patchwork Tue Aug 20 15:47:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 11104249 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 81F9D1399 for ; Tue, 20 Aug 2019 15:50:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5DE8122CE3 for ; Tue, 20 Aug 2019 15:50:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="oWF4a81r"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="UQ3l6uES" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730652AbfHTPuN (ORCPT ); Tue, 20 Aug 2019 11:50:13 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:45526 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729672AbfHTPuM (ORCPT ); Tue, 20 Aug 2019 11:50:12 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id CA44C61BA5; Tue, 20 Aug 2019 15:49:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1566316211; bh=e8lYkmrQX140gA2R9tt4utZYOGcgegOeW+vdIb1SQFQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oWF4a81ro5UA4kfs49HvHBPkkk1U//FdEb4CSpdqp6H8jev4IjJ1aUnRAGmw3t+pB I7+aPQQeqrljDqmD4uXrY5a39wylG4B8emQ4BpC6+Rn5E0C4EcU+UWYTSf7jVh40fm gqmoOJQo1f2jBtt4ZzX+VFdV5TZvqEZQdKa3hQlg= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_INVALID,DKIM_SIGNED,SPF_NONE autolearn=no autolearn_force=no version=3.4.0 Received: from potku.adurom.net (88-114-240-156.elisa-laajakaista.fi [88.114.240.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kvalo@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3268661B61; Tue, 20 Aug 2019 15:49:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1566316179; bh=e8lYkmrQX140gA2R9tt4utZYOGcgegOeW+vdIb1SQFQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UQ3l6uES6OZpKNI+3cWixS6CwC54zmUK1dWKSirf+1LcxymEL0jtdFGZF/+3346/t DnPyVg6hNVRR0j+f44yYp5vFD7r874RcBV3hYM6hCHlpSr0iHHunLw+blv54lqp7VG 3pbDEktL30VqFpAJiNpKHnTgmYk/Xpcm26GVJqWE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3268661B61 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=kvalo@codeaurora.org From: Kalle Valo To: linux-wireless@vger.kernel.org Cc: ath11k@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH 29/49] ath11k: add htc.h Date: Tue, 20 Aug 2019 18:47:55 +0300 Message-Id: <1566316095-27507-30-git-send-email-kvalo@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1566316095-27507-1-git-send-email-kvalo@codeaurora.org> References: <1566316095-27507-1-git-send-email-kvalo@codeaurora.org> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org --- drivers/net/wireless/ath/ath11k/htc.h | 313 ++++++++++++++++++++++++++++++++++ 1 file changed, 313 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/htc.h b/drivers/net/wireless/ath/ath11k/htc.h new file mode 100644 index 000000000000..39fbee4861ab --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/htc.h @@ -0,0 +1,313 @@ +/* SPDX-License-Identifier: ISC */ +/* + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. + */ + +#ifndef ATH11K_HTC_H +#define ATH11K_HTC_H + +#include +#include +#include +#include +#include + +struct ath11k_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 ath11k_htc_tx_flags { + ATH11K_HTC_FLAG_NEED_CREDIT_UPDATE = 0x01, + ATH11K_HTC_FLAG_SEND_BUNDLE = 0x02 +}; + +enum ath11k_htc_rx_flags { + ATH11K_HTC_FLAG_TRAILER_PRESENT = 0x02, + ATH11K_HTC_FLAG_BUNDLE_MASK = 0xF0 +}; + +struct ath11k_htc_hdr { + u32 htc_info; + u32 ctrl_info; +} __packed __aligned(4); + +enum ath11k_htc_msg_id { + ATH11K_HTC_MSG_READY_ID = 1, + ATH11K_HTC_MSG_CONNECT_SERVICE_ID = 2, + ATH11K_HTC_MSG_CONNECT_SERVICE_RESP_ID = 3, + ATH11K_HTC_MSG_SETUP_COMPLETE_ID = 4, + ATH11K_HTC_MSG_SETUP_COMPLETE_EX_ID = 5, + ATH11K_HTC_MSG_SEND_SUSPEND_COMPLETE = 6 +}; + +enum ath11k_htc_version { + ATH11K_HTC_VERSION_2P0 = 0x00, /* 2.0 */ + ATH11K_HTC_VERSION_2P1 = 0x01, /* 2.1 */ +}; + +#define ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_MASK GENMASK(1, 0) +#define ATH11K_HTC_CONN_FLAGS_RECV_ALLOC GENMASK(15, 8) + +enum ath11k_htc_conn_flags { + ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH = 0x0, + ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF = 0x1, + ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS = 0x2, + ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY = 0x3, + ATH11K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE = 1 << 2, + ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL = 1 << 3 +}; + +enum ath11k_htc_conn_svc_status { + ATH11K_HTC_CONN_SVC_STATUS_SUCCESS = 0, + ATH11K_HTC_CONN_SVC_STATUS_NOT_FOUND = 1, + ATH11K_HTC_CONN_SVC_STATUS_FAILED = 2, + ATH11K_HTC_CONN_SVC_STATUS_NO_RESOURCES = 3, + ATH11K_HTC_CONN_SVC_STATUS_NO_MORE_EP = 4 +}; + +struct ath11k_htc_ready { + u32 id_credit_count; + u32 size_ep; +} __packed; + +struct ath11k_htc_ready_extended { + struct ath11k_htc_ready base; + u32 ver_bundle; +} __packed; + +struct ath11k_htc_conn_svc { + u32 msg_svc_id; + u32 flags_len; +} __packed; + +struct ath11k_htc_conn_svc_resp { + u32 msg_svc_id; + u32 flags_len; + u32 svc_meta_pad; +} __packed; + +struct ath11k_htc_setup_complete_extended { + u32 msg_id; + u32 flags; + u32 max_msgs_per_bundled_recv; +} __packed; + +struct ath11k_htc_msg { + u32 msg_svc_id; + u32 flags_len; +} __packed __aligned(4); + +enum ath11k_htc_record_id { + ATH11K_HTC_RECORD_NULL = 0, + ATH11K_HTC_RECORD_CREDITS = 1 +}; + +struct ath11k_htc_record_hdr { + u8 id; /* @enum ath11k_htc_record_id */ + u8 len; + u8 pad0; + u8 pad1; +} __packed; + +struct ath11k_htc_credit_report { + u8 eid; /* @enum ath11k_htc_ep_id */ + u8 credits; + u8 pad0; + u8 pad1; +} __packed; + +struct ath11k_htc_record { + struct ath11k_htc_record_hdr hdr; + union { + struct ath11k_htc_credit_report credit_report[0]; + u8 pauload[0]; + }; +} __packed __aligned(4); + +/* note: the trailer offset is dynamic depending + * on payload length. this is only a struct layout draft + */ +struct ath11k_htc_frame { + struct ath11k_htc_hdr hdr; + union { + struct ath11k_htc_msg msg; + u8 payload[0]; + }; + struct ath11k_htc_record trailer[0]; +} __packed __aligned(4); + +enum ath11k_htc_svc_gid { + ATH11K_HTC_SVC_GRP_RSVD = 0, + ATH11K_HTC_SVC_GRP_WMI = 1, + ATH11K_HTC_SVC_GRP_NMI = 2, + ATH11K_HTC_SVC_GRP_HTT = 3, + ATH11K_HTC_SVC_GRP_CFG = 4, + ATH11K_HTC_SVC_GRP_IPA = 5, + ATH11K_HTC_SVC_GRP_PKTLOG = 6, + + ATH11K_HTC_SVC_GRP_TEST = 254, + ATH11K_HTC_SVC_GRP_LAST = 255, +}; + +#define SVC(group, idx) \ + (int)(((int)(group) << 8) | (int)(idx)) + +enum ath11k_htc_svc_id { + /* NOTE: service ID of 0x0000 is reserved and should never be used */ + ATH11K_HTC_SVC_ID_RESERVED = 0x0000, + ATH11K_HTC_SVC_ID_UNUSED = ATH11K_HTC_SVC_ID_RESERVED, + + ATH11K_HTC_SVC_ID_RSVD_CTRL = SVC(ATH11K_HTC_SVC_GRP_RSVD, 1), + ATH11K_HTC_SVC_ID_WMI_CONTROL = SVC(ATH11K_HTC_SVC_GRP_WMI, 0), + ATH11K_HTC_SVC_ID_WMI_DATA_BE = SVC(ATH11K_HTC_SVC_GRP_WMI, 1), + ATH11K_HTC_SVC_ID_WMI_DATA_BK = SVC(ATH11K_HTC_SVC_GRP_WMI, 2), + ATH11K_HTC_SVC_ID_WMI_DATA_VI = SVC(ATH11K_HTC_SVC_GRP_WMI, 3), + ATH11K_HTC_SVC_ID_WMI_DATA_VO = SVC(ATH11K_HTC_SVC_GRP_WMI, 4), + ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC1 = SVC(ATH11K_HTC_SVC_GRP_WMI, 5), + ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC2 = SVC(ATH11K_HTC_SVC_GRP_WMI, 6), + + ATH11K_HTC_SVC_ID_NMI_CONTROL = SVC(ATH11K_HTC_SVC_GRP_NMI, 0), + ATH11K_HTC_SVC_ID_NMI_DATA = SVC(ATH11K_HTC_SVC_GRP_NMI, 1), + + ATH11K_HTC_SVC_ID_HTT_DATA_MSG = SVC(ATH11K_HTC_SVC_GRP_HTT, 0), + + /* raw stream service (i.e. flash, tcmd, calibration apps) */ + ATH11K_HTC_SVC_ID_TEST_RAW_STREAMS = SVC(ATH11K_HTC_SVC_GRP_TEST, 0), + ATH11K_HTC_SVC_ID_IPA_TX = SVC(ATH11K_HTC_SVC_GRP_IPA, 0), + ATH11K_HTC_SVC_ID_PKT_LOG = SVC(ATH11K_HTC_SVC_GRP_PKTLOG, 0), +}; + +#undef SVC + +enum ath11k_htc_ep_id { + ATH11K_HTC_EP_UNUSED = -1, + ATH11K_HTC_EP_0 = 0, + ATH11K_HTC_EP_1 = 1, + ATH11K_HTC_EP_2, + ATH11K_HTC_EP_3, + ATH11K_HTC_EP_4, + ATH11K_HTC_EP_5, + ATH11K_HTC_EP_6, + ATH11K_HTC_EP_7, + ATH11K_HTC_EP_8, + ATH11K_HTC_EP_COUNT, +}; + +struct ath11k_htc_ops { + void (*target_send_suspend_complete)(struct ath11k_base *ar); +}; + +struct ath11k_htc_ep_ops { + void (*ep_tx_complete)(struct ath11k_base *, struct sk_buff *); + void (*ep_rx_complete)(struct ath11k_base *, struct sk_buff *); + void (*ep_tx_credits)(struct ath11k_base *); +}; + +/* service connection information */ +struct ath11k_htc_svc_conn_req { + u16 service_id; + struct ath11k_htc_ep_ops ep_ops; + int max_send_queue_depth; +}; + +/* service connection response information */ +struct ath11k_htc_svc_conn_resp { + u8 buffer_len; + u8 actual_len; + enum ath11k_htc_ep_id eid; + unsigned int max_msg_len; + u8 connect_resp_code; +}; + +#define ATH11K_NUM_CONTROL_TX_BUFFERS 2 +#define ATH11K_HTC_MAX_LEN 4096 +#define ATH11K_HTC_MAX_CTRL_MSG_LEN 256 +#define ATH11K_HTC_WAIT_TIMEOUT_HZ (1 * HZ) +#define ATH11K_HTC_CONTROL_BUFFER_SIZE (ATH11K_HTC_MAX_CTRL_MSG_LEN + \ + sizeof(struct ath11k_htc_hdr)) +#define ATH11K_HTC_CONN_SVC_TIMEOUT_HZ (1 * HZ) +#define ATH11K_HTC_MAX_SERVICE_ALLOC_ENTRIES 8 + +struct ath11k_htc_ep { + struct ath11k_htc *htc; + enum ath11k_htc_ep_id eid; + enum ath11k_htc_svc_id service_id; + struct ath11k_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 ath11k_htc_svc_tx_credits { + u16 service_id; + u8 credit_allocation; +}; + +struct ath11k_htc { + struct ath11k_base *ab; + struct ath11k_htc_ep endpoint[ATH11K_HTC_EP_COUNT]; + + /* protects endpoints */ + spinlock_t tx_lock; + + struct ath11k_htc_ops htc_ops; + + u8 control_resp_buffer[ATH11K_HTC_MAX_CTRL_MSG_LEN]; + int control_resp_len; + + struct completion ctl_resp; + + int total_transmit_credits; + struct ath11k_htc_svc_tx_credits + service_alloc_table[ATH11K_HTC_MAX_SERVICE_ALLOC_ENTRIES]; + int target_credit_size; + u8 wmi_ep_count; +}; + +int ath11k_htc_init(struct ath11k_base *ar); +int ath11k_htc_wait_target(struct ath11k_htc *htc); +int ath11k_htc_start(struct ath11k_htc *htc); +int ath11k_htc_connect_service(struct ath11k_htc *htc, + struct ath11k_htc_svc_conn_req *conn_req, + struct ath11k_htc_svc_conn_resp *conn_resp); +int ath11k_htc_send(struct ath11k_htc *htc, enum ath11k_htc_ep_id eid, + struct sk_buff *packet); +struct sk_buff *ath11k_htc_alloc_skb(struct ath11k_base *ar, int size); +void ath11k_htc_rx_completion_handler(struct ath11k_base *ar, + struct sk_buff *skb); + +#endif