From patchwork Mon Sep 20 16:11:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 12505839 X-Patchwork-Delegate: kvalo@adurom.com 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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,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 DE9DAC433EF for ; Mon, 20 Sep 2021 16:12:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C54086115B for ; Mon, 20 Sep 2021 16:12:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242454AbhITQOQ (ORCPT ); Mon, 20 Sep 2021 12:14:16 -0400 Received: from mail-bn7nam10on2076.outbound.protection.outlook.com ([40.107.92.76]:28992 "EHLO NAM10-BN7-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S242836AbhITQOB (ORCPT ); Mon, 20 Sep 2021 12:14:01 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=iPw4TZPcady7aZlzsdYINq2u/YlhowjD/BPphYwqTF4lPOJAIEoQNDK144Ee9x7YjdTdiTKU05IVVDU4V0NTVkrWG9Dus51CqT/gIh5crUvFoYtk4UF7As2ATgKOzw6Sx/SY9lUMyca5izaLvNnbyI8nSj9hZyQTsrROCkBmVeNM1fpLYtBl8VcRBUoIjXCRXYkzfW8q/ltbYgTz0tcQj0IfxX6TtjdDHkYCfojRubAWILtv/ihmI838yHhzmbHYQbYUUqALgasdSVxBc0uw51s/Nsc5dY57RVlBWN9mN2mdM3ZB+BdBy2m7E+wgMdr8HByJsFFLOvhoBi6VtOxxTQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=ezy3MjvI3yi92gAj4tRKzzMs/rhPl2s12vEVz0oXbBM=; b=aoGwzT+XF35TCRK8e7V2bMsO/3SQL3pPoeTb+u7uW7/4roq/IyvMSDsTM6yTdzN2mn4PHjKXNfddoI4c9Fjf+RnbHy/ku+6+sDS2ZpeC8srOzPMeNxqRi4dbRAHBxCR8D3So+9JrHAWTxPnayvEKLCuWmiXd9Js0SVdjx0SSXENNpIoQBorjQOL3Msr2IJS2I/G9oB7WDsAnceqWZrzZ8t8DUr04a1gPr5MEHXweF+JlTHm/RUiag9bBc9I3as5s2fBV1UlapAmPZLBw76gIbcJVrP4pLjk26RbROKZn/D93ThOaJT+IjF5Yqt6GCoHy3PcT3HVRZYYyTirIYNCuaw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ezy3MjvI3yi92gAj4tRKzzMs/rhPl2s12vEVz0oXbBM=; b=E3qNygiVM1x04J0IbrokVyJzm/c6KKZ8KtPvzFDXeWp3mKsRCYKG1GYtX2QHuZb9ppr2RM41NLVDfAp8oMs5pj1kPNS2VGE5DaZNsL1BkJMoyt5+Zpp1G7DEzS1S24eAKPT7Z2KzIeu6LBFGvE92K66Jq2SeTuC6hrzvt96jDwI= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2654.namprd11.prod.outlook.com (2603:10b6:805:54::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4523.14; Mon, 20 Sep 2021 16:12:31 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::7050:a0a:415:2ccd]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::7050:a0a:415:2ccd%7]) with mapi id 15.20.4523.018; Mon, 20 Sep 2021 16:12:31 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, Kalle Valo Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali?= =?utf-8?q?_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v7 15/24] wfx: add hif_rx.c/hif_rx.h Date: Mon, 20 Sep 2021 18:11:27 +0200 Message-Id: <20210920161136.2398632-16-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210920161136.2398632-1-Jerome.Pouiller@silabs.com> References: <20210920161136.2398632-1-Jerome.Pouiller@silabs.com> X-ClientProxiedBy: SA0PR11CA0064.namprd11.prod.outlook.com (2603:10b6:806:d2::9) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 Received: from pc-42.silabs.com (2a01:e34:ecb5:66a0:9876:e1d7:65be:d294) by SA0PR11CA0064.namprd11.prod.outlook.com (2603:10b6:806:d2::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4523.14 via Frontend Transport; Mon, 20 Sep 2021 16:12:29 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1e4a0e69-779f-48a2-2e32-08d97c5172cc X-MS-TrafficTypeDiagnostic: SN6PR11MB2654: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2657; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR11MB2718.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(366004)(52116002)(36756003)(7696005)(30864003)(5660300002)(4326008)(316002)(107886003)(8676002)(2616005)(2906002)(66476007)(66946007)(66556008)(66574015)(7416002)(508600001)(86362001)(38100700002)(83380400001)(8936002)(1076003)(6486002)(186003)(6916009)(54906003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1e4a0e69-779f-48a2-2e32-08d97c5172cc X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2718.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Sep 2021 16:12:31.2573 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: gALEHAEhJaPj0RnRoXDs61ClB9X6DzRubYNSvYaXB/PLVI7stcjlsAmExLZslRs+D/RkHp6sFSrr5BDIfhOQNg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2654 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Jérôme Pouiller Signed-off-by: Jérôme Pouiller --- drivers/net/wireless/silabs/wfx/hif_rx.c | 415 +++++++++++++++++++++++ drivers/net/wireless/silabs/wfx/hif_rx.h | 17 + 2 files changed, 432 insertions(+) create mode 100644 drivers/net/wireless/silabs/wfx/hif_rx.c create mode 100644 drivers/net/wireless/silabs/wfx/hif_rx.h diff --git a/drivers/net/wireless/silabs/wfx/hif_rx.c b/drivers/net/wireless/silabs/wfx/hif_rx.c new file mode 100644 index 000000000000..2e6db5b99708 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_rx.c @@ -0,0 +1,415 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Handling of the chip-to-host events (aka indications) of the hardware API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#include +#include + +#include "hif_rx.h" +#include "wfx.h" +#include "scan.h" +#include "bh.h" +#include "sta.h" +#include "data_rx.h" +#include "hif_api_cmd.h" + +static int hif_generic_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + /* All confirm messages start with status */ + int status = le32_to_cpup((__le32 *)buf); + int cmd = hif->id; + int len = le16_to_cpu(hif->len) - 4; /* drop header */ + + WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error"); + + if (!wdev->hif_cmd.buf_send) { + dev_warn(wdev->dev, "unexpected confirmation: 0x%.2x\n", cmd); + return -EINVAL; + } + + if (cmd != wdev->hif_cmd.buf_send->id) { + dev_warn(wdev->dev, + "chip response mismatch request: 0x%.2x vs 0x%.2x\n", + cmd, wdev->hif_cmd.buf_send->id); + return -EINVAL; + } + + if (wdev->hif_cmd.buf_recv) { + if (wdev->hif_cmd.len_recv >= len && len > 0) + memcpy(wdev->hif_cmd.buf_recv, buf, len); + else + status = -EIO; + } + wdev->hif_cmd.ret = status; + + complete(&wdev->hif_cmd.done); + return status; +} + +static int hif_tx_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_cnf_tx *body = buf; + + wfx_tx_confirm_cb(wdev, body); + return 0; +} + +static int hif_multi_tx_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_cnf_multi_transmit *body = buf; + int i; + + WARN(body->num_tx_confs <= 0, "corrupted message"); + for (i = 0; i < body->num_tx_confs; i++) + wfx_tx_confirm_cb(wdev, &body->tx_conf_payload[i]); + return 0; +} + +static int hif_startup_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_startup *body = buf; + + if (body->status || body->firmware_type > 4) { + dev_err(wdev->dev, "received invalid startup indication"); + return -EINVAL; + } + memcpy(&wdev->hw_caps, body, sizeof(struct hif_ind_startup)); + le16_to_cpus((__le16 *)&wdev->hw_caps.hardware_id); + le16_to_cpus((__le16 *)&wdev->hw_caps.num_inp_ch_bufs); + le16_to_cpus((__le16 *)&wdev->hw_caps.size_inp_ch_buf); + le32_to_cpus((__le32 *)&wdev->hw_caps.supported_rate_mask); + + complete(&wdev->firmware_ready); + return 0; +} + +static int hif_wakeup_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + if (!wdev->pdata.gpio_wakeup || + gpiod_get_value(wdev->pdata.gpio_wakeup) == 0) { + dev_warn(wdev->dev, "unexpected wake-up indication\n"); + return -EIO; + } + return 0; +} + +static int hif_receive_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf, struct sk_buff *skb) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + const struct hif_ind_rx *body = buf; + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + skb_pull(skb, sizeof(struct hif_msg) + sizeof(struct hif_ind_rx)); + wfx_rx_cb(wvif, body, skb); + + return 0; +} + +static int hif_event_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + const struct hif_ind_event *body = buf; + int type = le32_to_cpu(body->event_id); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + + switch (type) { + case HIF_EVENT_IND_RCPI_RSSI: + wfx_event_report_rssi(wvif, body->event_data.rcpi_rssi); + break; + case HIF_EVENT_IND_BSSLOST: + schedule_delayed_work(&wvif->beacon_loss_work, 0); + break; + case HIF_EVENT_IND_BSSREGAINED: + cancel_delayed_work(&wvif->beacon_loss_work); + dev_dbg(wdev->dev, "ignore BSSREGAINED indication\n"); + break; + case HIF_EVENT_IND_PS_MODE_ERROR: + dev_warn(wdev->dev, "error while processing power save request: %d\n", + le32_to_cpu(body->event_data.ps_mode_error)); + break; + default: + dev_warn(wdev->dev, "unhandled event indication: %.2x\n", + type); + break; + } + return 0; +} + +static int hif_pm_mode_complete_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + complete(&wvif->set_pm_mode_complete); + + return 0; +} + +static int hif_scan_complete_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + const struct hif_ind_scan_cmpl *body = buf; + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + + wfx_scan_complete(wvif, body->num_channels_completed); + + return 0; +} + +static int hif_join_complete_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); + + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + dev_warn(wdev->dev, "unattended JoinCompleteInd\n"); + + return 0; +} + +static int hif_suspend_resume_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf) +{ + const struct hif_ind_suspend_resume_tx *body = buf; + struct wfx_vif *wvif; + + if (body->bc_mc_only) { + wvif = wdev_to_wvif(wdev, hif->interface); + if (!wvif) { + dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__); + return -EIO; + } + if (body->resume) + wfx_suspend_resume_mc(wvif, STA_NOTIFY_AWAKE); + else + wfx_suspend_resume_mc(wvif, STA_NOTIFY_SLEEP); + } else { + WARN(body->peer_sta_set, "misunderstood indication"); + WARN(hif->interface != 2, "misunderstood indication"); + if (body->resume) + wfx_suspend_hot_dev(wdev, STA_NOTIFY_AWAKE); + else + wfx_suspend_hot_dev(wdev, STA_NOTIFY_SLEEP); + } + + return 0; +} + +static int hif_generic_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_generic *body = buf; + int type = le32_to_cpu(body->type); + + switch (type) { + case HIF_GENERIC_INDICATION_TYPE_RAW: + return 0; + case HIF_GENERIC_INDICATION_TYPE_STRING: + dev_info(wdev->dev, "firmware says: %s\n", (char *)&body->data); + return 0; + case HIF_GENERIC_INDICATION_TYPE_RX_STATS: + mutex_lock(&wdev->rx_stats_lock); + /* Older firmware send a generic indication beside RxStats */ + if (!wfx_api_older_than(wdev, 1, 4)) + dev_info(wdev->dev, "Rx test ongoing. Temperature: %d degrees C\n", + body->data.rx_stats.current_temp); + memcpy(&wdev->rx_stats, &body->data.rx_stats, + sizeof(wdev->rx_stats)); + mutex_unlock(&wdev->rx_stats_lock); + return 0; + case HIF_GENERIC_INDICATION_TYPE_TX_POWER_LOOP_INFO: + mutex_lock(&wdev->tx_power_loop_info_lock); + memcpy(&wdev->tx_power_loop_info, + &body->data.tx_power_loop_info, + sizeof(wdev->tx_power_loop_info)); + mutex_unlock(&wdev->tx_power_loop_info_lock); + return 0; + default: + dev_err(wdev->dev, "generic_indication: unknown indication type: %#.8x\n", + type); + return -EIO; + } +} + +static const struct { + int val; + const char *str; + bool has_param; +} hif_errors[] = { + { HIF_ERROR_FIRMWARE_ROLLBACK, + "rollback status" }, + { HIF_ERROR_FIRMWARE_DEBUG_ENABLED, + "debug feature enabled" }, + { HIF_ERROR_PDS_PAYLOAD, + "PDS version is not supported" }, + { HIF_ERROR_PDS_TESTFEATURE, + "PDS ask for an unknown test mode" }, + { HIF_ERROR_OOR_VOLTAGE, + "out-of-range power supply voltage", true }, + { HIF_ERROR_OOR_TEMPERATURE, + "out-of-range temperature", true }, + { HIF_ERROR_SLK_REQ_DURING_KEY_EXCHANGE, + "secure link does not expect request during key exchange" }, + { HIF_ERROR_SLK_SESSION_KEY, + "secure link session key is invalid" }, + { HIF_ERROR_SLK_OVERFLOW, + "secure link overflow" }, + { HIF_ERROR_SLK_WRONG_ENCRYPTION_STATE, + "secure link messages list does not match message encryption" }, + { HIF_ERROR_SLK_UNCONFIGURED, + "secure link not yet configured" }, + { HIF_ERROR_HIF_BUS_FREQUENCY_TOO_LOW, + "bus clock is too slow (<1kHz)" }, + { HIF_ERROR_HIF_RX_DATA_TOO_LARGE, + "HIF message too large" }, + /* Following errors only exists in old firmware versions: */ + { HIF_ERROR_HIF_TX_QUEUE_FULL, + "HIF messages queue is full" }, + { HIF_ERROR_HIF_BUS, + "HIF bus" }, + { HIF_ERROR_SLK_MULTI_TX_UNSUPPORTED, + "secure link does not support multi-tx confirmations" }, + { HIF_ERROR_SLK_OUTDATED_SESSION_KEY, + "secure link session key is outdated" }, + { HIF_ERROR_SLK_DECRYPTION, + "secure link params (nonce or tag) mismatch" }, +}; + +static int hif_error_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_error *body = buf; + int type = le32_to_cpu(body->type); + int param = (s8)body->data[0]; + int i; + + for (i = 0; i < ARRAY_SIZE(hif_errors); i++) + if (type == hif_errors[i].val) + break; + if (i < ARRAY_SIZE(hif_errors)) + if (hif_errors[i].has_param) + dev_err(wdev->dev, "asynchronous error: %s: %d\n", + hif_errors[i].str, param); + else + dev_err(wdev->dev, "asynchronous error: %s\n", + hif_errors[i].str); + else + dev_err(wdev->dev, "asynchronous error: unknown: %08x\n", type); + print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET, + 16, 1, hif, le16_to_cpu(hif->len), false); + wdev->chip_frozen = true; + + return 0; +}; + +static int hif_exception_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) +{ + const struct hif_ind_exception *body = buf; + int type = le32_to_cpu(body->type); + + if (type == 4) + dev_err(wdev->dev, "firmware assert %d\n", + le32_to_cpup((__le32 *)body->data)); + else + dev_err(wdev->dev, "firmware exception\n"); + print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET, + 16, 1, hif, le16_to_cpu(hif->len), false); + wdev->chip_frozen = true; + + return -1; +} + +static const struct { + int msg_id; + int (*handler)(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf); +} hif_handlers[] = { + /* Confirmations */ + { HIF_CNF_ID_TX, hif_tx_confirm }, + { HIF_CNF_ID_MULTI_TRANSMIT, hif_multi_tx_confirm }, + /* Indications */ + { HIF_IND_ID_STARTUP, hif_startup_indication }, + { HIF_IND_ID_WAKEUP, hif_wakeup_indication }, + { HIF_IND_ID_JOIN_COMPLETE, hif_join_complete_indication }, + { HIF_IND_ID_SET_PM_MODE_CMPL, hif_pm_mode_complete_indication }, + { HIF_IND_ID_SCAN_CMPL, hif_scan_complete_indication }, + { HIF_IND_ID_SUSPEND_RESUME_TX, hif_suspend_resume_indication }, + { HIF_IND_ID_EVENT, hif_event_indication }, + { HIF_IND_ID_GENERIC, hif_generic_indication }, + { HIF_IND_ID_ERROR, hif_error_indication }, + { HIF_IND_ID_EXCEPTION, hif_exception_indication }, + /* FIXME: allocate skb_p from hif_receive_indication and make it generic */ + //{ HIF_IND_ID_RX, hif_receive_indication }, +}; + +void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb) +{ + int i; + const struct hif_msg *hif = (const struct hif_msg *)skb->data; + int hif_id = hif->id; + + if (hif_id == HIF_IND_ID_RX) { + /* hif_receive_indication take care of skb lifetime */ + hif_receive_indication(wdev, hif, hif->body, skb); + return; + } + /* Note: mutex_is_lock cause an implicit memory barrier that protect + * buf_send + */ + if (mutex_is_locked(&wdev->hif_cmd.lock) && + wdev->hif_cmd.buf_send && + wdev->hif_cmd.buf_send->id == hif_id) { + hif_generic_confirm(wdev, hif, hif->body); + goto free; + } + for (i = 0; i < ARRAY_SIZE(hif_handlers); i++) { + if (hif_handlers[i].msg_id == hif_id) { + if (hif_handlers[i].handler) + hif_handlers[i].handler(wdev, hif, hif->body); + goto free; + } + } + if (hif_id & 0x80) + dev_err(wdev->dev, "unsupported HIF indication: ID %02x\n", + hif_id); + else + dev_err(wdev->dev, "unexpected HIF confirmation: ID %02x\n", + hif_id); +free: + dev_kfree_skb(skb); +} diff --git a/drivers/net/wireless/silabs/wfx/hif_rx.h b/drivers/net/wireless/silabs/wfx/hif_rx.h new file mode 100644 index 000000000000..96543b81fa77 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_rx.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Handling of the chip-to-host events (aka indications) of the hardware API. + * + * Copyright (c) 2017-2019, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + * Copyright (C) 2010, ST-Ericsson SA + */ +#ifndef WFX_HIF_RX_H +#define WFX_HIF_RX_H + +struct wfx_dev; +struct sk_buff; + +void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb); + +#endif