From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 8B3D7CA9EAE for ; Sun, 20 Oct 2019 10:04:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61CBF222BD for ; Sun, 20 Oct 2019 10:04:28 +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="MNtiSAg5"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="IBIlZ86t" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726311AbfJTKE1 (ORCPT ); Sun, 20 Oct 2019 06:04:27 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:42688 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726302AbfJTKE0 (ORCPT ); Sun, 20 Oct 2019 06:04:26 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 7185F60F2F; Sun, 20 Oct 2019 10:04:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1571565865; bh=ORnUiZvd+X1M1+piS+iAIMVRX7FbpzjGxyJF/YYkI/E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MNtiSAg5z6uHl+8HgpD/sjTwFrBaufcJFc4MFha/Hpd4RGJWzs6FftfqE5+8kCSrV uDnn0sX7S4i6/+Vv0GsMQdF9JHSl5odDYOahgdcPv/v5b9LLIBI0Nv0T2mzsNLdrS0 BP7bxGwt7o9cCwAjX/xWiQK656EkNgSLK59L51pI= Received: from x230.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 B4D0B60EC7; Sun, 20 Oct 2019 10:04:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1571565864; bh=ORnUiZvd+X1M1+piS+iAIMVRX7FbpzjGxyJF/YYkI/E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IBIlZ86tPdIybZiTl9NI/dmE5uR+Wb/JnIUGETdDqq7o6C7icf8PHIDD61/nbqfrj JlQ3DWKUiRMMVLYAshItNkWXCs1SdGcGGYQoPaL6WgpBXTxaCDZEkveZVkG5gA9MSG sh+DDzC7MCzAuCZjCIeHa67acfRZXej1QSsGPKWw= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B4D0B60EC7 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 v2 08/49] ath11k: add core.c Date: Sun, 20 Oct 2019 13:03:26 +0300 Message-Id: <1571565847-10338-9-git-send-email-kvalo@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1571565847-10338-1-git-send-email-kvalo@codeaurora.org> References: <1571565847-10338-1-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 (patches split for easier review, see the cover letter for more) Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath11k/core.c | 772 +++++++++++++++++++++++++++++++++ 1 file changed, 772 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c new file mode 100644 index 000000000000..b0c71b5879b1 --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/core.c @@ -0,0 +1,772 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include "ahb.h" +#include "core.h" +#include "dp_tx.h" +#include "debug.h" + +unsigned int ath11k_debug_mask; +module_param_named(debug_mask, ath11k_debug_mask, uint, 0644); +MODULE_PARM_DESC(debug_mask, "Debugging mask"); + +static const struct ath11k_hw_params ath11k_hw_params = { + .name = "ipq8074", + .fw = { + .dir = IPQ8074_FW_DIR, + .board_size = IPQ8074_MAX_BOARD_DATA_SZ, + .cal_size = IPQ8074_MAX_CAL_DATA_SZ, + }, +}; + +/* Map from pdev index to hw mac index */ +u8 ath11k_core_get_hw_mac_id(struct ath11k_base *ab, int pdev_idx) +{ + switch (pdev_idx) { + case 0: + return 0; + case 1: + return 2; + case 2: + return 1; + default: + ath11k_warn(ab, "Invalid pdev idx %d\n", pdev_idx); + return ATH11K_INVALID_HW_MAC_ID; + } +} + +static int ath11k_core_create_board_name(struct ath11k_base *ab, char *name, + size_t name_len) +{ + /* Note: bus is fixed to ahb. When other bus type supported, + * make it to dynamic. + */ + scnprintf(name, name_len, + "bus=ahb,qmi-chip-id=%d,qmi-board-id=%d", + ab->qmi.target.chip_id, + ab->qmi.target.board_id); + + ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot using board name '%s'\n", name); + + return 0; +} + +static const struct firmware *ath11k_fetch_fw_file(struct ath11k_base *ab, + const char *dir, + const char *file) +{ + char filename[100]; + const struct firmware *fw; + int ret; + + if (file == NULL) + return ERR_PTR(-ENOENT); + + if (dir == NULL) + dir = "."; + + snprintf(filename, sizeof(filename), "%s/%s", dir, file); + ret = firmware_request_nowarn(&fw, filename, ab->dev); + ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot fw request '%s': %d\n", + filename, ret); + + if (ret) + return ERR_PTR(ret); + ath11k_warn(ab, "Downloading BDF: %s, size: %zu\n", + filename, fw->size); + + return fw; +} + +void ath11k_core_free_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd) +{ + if (!IS_ERR(bd->fw)) + release_firmware(bd->fw); + + memset(bd, 0, sizeof(*bd)); +} + +static int ath11k_core_parse_bd_ie_board(struct ath11k_base *ab, + struct ath11k_board_data *bd, + const void *buf, size_t buf_len, + const char *boardname, + int bd_ie_type) +{ + const struct ath11k_fw_ie *hdr; + bool name_match_found; + int ret, board_ie_id; + size_t board_ie_len; + const void *board_ie_data; + + name_match_found = false; + + /* go through ATH11K_BD_IE_BOARD_ elements */ + while (buf_len > sizeof(struct ath11k_fw_ie)) { + hdr = buf; + board_ie_id = le32_to_cpu(hdr->id); + board_ie_len = le32_to_cpu(hdr->len); + board_ie_data = hdr->data; + + buf_len -= sizeof(*hdr); + buf += sizeof(*hdr); + + if (buf_len < ALIGN(board_ie_len, 4)) { + ath11k_err(ab, "invalid ATH11K_BD_IE_BOARD length: %zu < %zu\n", + buf_len, ALIGN(board_ie_len, 4)); + ret = -EINVAL; + goto out; + } + + switch (board_ie_id) { + case ATH11K_BD_IE_BOARD_NAME: + ath11k_dbg_dump(ab, ATH11K_DBG_BOOT, "board name", "", + board_ie_data, board_ie_len); + + if (board_ie_len != strlen(boardname)) + break; + + ret = memcmp(board_ie_data, boardname, strlen(boardname)); + if (ret) + break; + + name_match_found = true; + ath11k_dbg(ab, ATH11K_DBG_BOOT, + "boot found match for name '%s'", + boardname); + break; + case ATH11K_BD_IE_BOARD_DATA: + if (!name_match_found) + /* no match found */ + break; + + ath11k_dbg(ab, ATH11K_DBG_BOOT, + "boot found board data for '%s'", boardname); + + bd->data = board_ie_data; + bd->len = board_ie_len; + + ret = 0; + goto out; + default: + ath11k_warn(ab, "unknown ATH11K_BD_IE_BOARD found: %d\n", + board_ie_id); + break; + } + + /* jump over the padding */ + board_ie_len = ALIGN(board_ie_len, 4); + + buf_len -= board_ie_len; + buf += board_ie_len; + } + + /* no match found */ + ret = -ENOENT; + +out: + return ret; +} + +static int ath11k_core_fetch_board_data_api_n(struct ath11k_base *ab, + struct ath11k_board_data *bd, + const char *boardname) +{ + size_t len, magic_len; + const u8 *data; + char *filename = ATH11K_BOARD_API2_FILE; + size_t ie_len; + struct ath11k_fw_ie *hdr; + int ret, ie_id; + + if (!bd->fw) + bd->fw = ath11k_fetch_fw_file(ab, + ab->hw_params.fw.dir, + filename); + if (IS_ERR(bd->fw)) + return PTR_ERR(bd->fw); + + data = bd->fw->data; + len = bd->fw->size; + + /* magic has extra null byte padded */ + magic_len = strlen(ATH11K_BOARD_MAGIC) + 1; + if (len < magic_len) { + ath11k_err(ab, "failed to find magic value in %s/%s, file too short: %zu\n", + ab->hw_params.fw.dir, filename, len); + ret = -EINVAL; + goto err; + } + + if (memcmp(data, ATH11K_BOARD_MAGIC, magic_len)) { + ath11k_err(ab, "found invalid board magic\n"); + ret = -EINVAL; + goto err; + } + + /* magic is padded to 4 bytes */ + magic_len = ALIGN(magic_len, 4); + if (len < magic_len) { + ath11k_err(ab, "failed: %s/%s too small to contain board data, len: %zu\n", + ab->hw_params.fw.dir, filename, len); + ret = -EINVAL; + goto err; + } + + data += magic_len; + len -= magic_len; + + while (len > sizeof(struct ath11k_fw_ie)) { + hdr = (struct ath11k_fw_ie *)data; + ie_id = le32_to_cpu(hdr->id); + ie_len = le32_to_cpu(hdr->len); + + len -= sizeof(*hdr); + data = hdr->data; + + if (len < ALIGN(ie_len, 4)) { + ath11k_err(ab, "invalid length for board ie_id %d ie_len %zu len %zu\n", + ie_id, ie_len, len); + return -EINVAL; + } + + switch (ie_id) { + case ATH11K_BD_IE_BOARD: + ret = ath11k_core_parse_bd_ie_board(ab, bd, data, + ie_len, + boardname, + ATH11K_BD_IE_BOARD); + if (ret == -ENOENT) + /* no match found, continue */ + break; + else if (ret) + /* there was an error, bail out */ + goto err; + /* either found or error, so stop searching */ + goto out; + } + + /* jump over the padding */ + ie_len = ALIGN(ie_len, 4); + + len -= ie_len; + data += ie_len; + } + +out: + if (!bd->data || !bd->len) { + ath11k_err(ab, + "failed to fetch board data for %s from %s/%s\n", + boardname, ab->hw_params.fw.dir, filename); + ret = -ENODATA; + goto err; + } + + return 0; + +err: + ath11k_core_free_bdf(ab, bd); + return ret; +} + +static int ath11k_core_fetch_board_data_api_1(struct ath11k_base *ab, + struct ath11k_board_data *bd) +{ + bd->fw = ath11k_fetch_fw_file(ab, + ab->hw_params.fw.dir, + ATH11K_DEFAULT_BOARD_FILE); + if (IS_ERR(bd->fw)) + return PTR_ERR(bd->fw); + + bd->data = bd->fw->data; + bd->len = bd->fw->size; + + return 0; +} + +#define BOARD_NAME_SIZE 100 +int ath11k_core_fetch_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd) +{ + char boardname[BOARD_NAME_SIZE]; + int ret; + + ret = ath11k_core_create_board_name(ab, boardname, BOARD_NAME_SIZE); + if (ret) { + ath11k_err(ab, "failed to create board name: %d", ret); + return ret; + } + + ab->bd_api = 2; + ret = ath11k_core_fetch_board_data_api_n(ab, bd, boardname); + if (!ret) + goto success; + + ab->bd_api = 1; + ret = ath11k_core_fetch_board_data_api_1(ab, bd); + if (ret) { + ath11k_err(ab, "failed to fetch board-2.bin or board.bin from %s\n", + ab->hw_params.fw.dir); + return ret; + } + +success: + ath11k_dbg(ab, ATH11K_DBG_BOOT, "using board api %d\n", ab->bd_api); + return 0; +} + +static void ath11k_core_stop(struct ath11k_base *ab) +{ + if (!test_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags)) + ath11k_qmi_firmware_stop(ab); + ath11k_ahb_stop(ab); + ath11k_wmi_detach(ab); + + /* De-Init of components as needed */ +} + +static int ath11k_core_soc_create(struct ath11k_base *ab) +{ + int ret; + + ret = ath11k_qmi_init_service(ab); + if (ret) { + ath11k_err(ab, "failed to initialize qmi :%d\n", ret); + return ret; + } + + ret = ath11k_debug_soc_create(ab); + if (ret) { + ath11k_err(ab, "failed to create ath11k debugfs\n"); + goto err_qmi_deinit; + } + + ret = ath11k_ahb_power_up(ab); + if (ret) { + ath11k_err(ab, "failed to power up :%d\n", ret); + goto err_debugfs_reg; + } + + return 0; + +err_debugfs_reg: + ath11k_debug_soc_destroy(ab); +err_qmi_deinit: + ath11k_qmi_deinit_service(ab); + return ret; +} + +static void ath11k_core_soc_destroy(struct ath11k_base *ab) +{ + ath11k_debug_soc_destroy(ab); + ath11k_dp_free(ab); + ath11k_reg_free(ab); + ath11k_qmi_deinit_service(ab); +} + +static int ath11k_core_pdev_create(struct ath11k_base *ab) +{ + int ret; + + ret = ath11k_debug_pdev_create(ab); + if (ret) { + ath11k_err(ab, "failed to create core pdev debugfs: %d\n", ret); + return ret; + } + + ret = ath11k_mac_create(ab); + if (ret) { + ath11k_err(ab, "failed to create new hw device with mac80211 :%d\n", + ret); + goto err_pdev_debug; + } + + ret = ath11k_dp_pdev_alloc(ab); + if (ret) { + ath11k_err(ab, "failed to attach DP pdev: %d\n", ret); + goto err_mac_destroy; + } + + return 0; + +err_mac_destroy: + ath11k_mac_destroy(ab); + +err_pdev_debug: + ath11k_debug_pdev_destroy(ab); + + return ret; +} + +static void ath11k_core_pdev_destroy(struct ath11k_base *ab) +{ + ath11k_mac_unregister(ab); + ath11k_ahb_ext_irq_disable(ab); + ath11k_dp_pdev_free(ab); + ath11k_debug_pdev_destroy(ab); +} + +static int ath11k_core_start(struct ath11k_base *ab, + enum ath11k_firmware_mode mode) +{ + int ret; + + ret = ath11k_qmi_firmware_start(ab, mode); + if (ret) { + ath11k_err(ab, "failed to attach wmi: %d\n", ret); + return ret; + } + + ret = ath11k_wmi_attach(ab); + if (ret) { + ath11k_err(ab, "failed to attach wmi: %d\n", ret); + goto err_firmware_stop; + } + + ret = ath11k_htc_init(ab); + if (ret) { + ath11k_err(ab, "failed to init htc: %d\n", ret); + goto err_wmi_detach; + } + + ret = ath11k_ahb_start(ab); + if (ret) { + ath11k_err(ab, "failed to start HIF: %d\n", ret); + goto err_wmi_detach; + } + + ret = ath11k_htc_wait_target(&ab->htc); + if (ret) { + ath11k_err(ab, "failed to connect to HTC: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_dp_htt_connect(&ab->dp); + if (ret) { + ath11k_err(ab, "failed to connect to HTT: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_connect(ab); + if (ret) { + ath11k_err(ab, "failed to connect wmi: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_htc_start(&ab->htc); + if (ret) { + ath11k_err(ab, "failed to start HTC: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_wait_for_service_ready(ab); + if (ret) { + ath11k_err(ab, "failed to receive wmi service ready event: %d\n", + ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_cmd_init(ab); + if (ret) { + ath11k_err(ab, "failed to send wmi init cmd: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_wait_for_unified_ready(ab); + if (ret) { + ath11k_err(ab, "failed to receive wmi unified ready event: %d\n", + ret); + goto err_hif_stop; + } + + ret = ath11k_dp_tx_htt_h2t_ver_req_msg(ab); + if (ret) { + ath11k_err(ab, "failed to send htt version request message: %d\n", + ret); + goto err_hif_stop; + } + + return 0; + +err_hif_stop: + ath11k_ahb_stop(ab); +err_wmi_detach: + ath11k_wmi_detach(ab); +err_firmware_stop: + ath11k_qmi_firmware_stop(ab); + + return ret; +} + +int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab) +{ + int ret; + + ret = ath11k_ce_init_pipes(ab); + if (ret) { + ath11k_err(ab, "failed to initialize CE: %d\n", ret); + return ret; + } + + ret = ath11k_dp_alloc(ab); + if (ret) { + ath11k_err(ab, "failed to init DP: %d\n", ret); + return ret; + } + + mutex_lock(&ab->core_lock); + ret = ath11k_core_start(ab, ATH11K_FIRMWARE_MODE_NORMAL); + if (ret) { + ath11k_err(ab, "failed to start core: %d\n", ret); + goto err_dp_free; + } + + ret = ath11k_core_pdev_create(ab); + if (ret) { + ath11k_err(ab, "failed to create pdev core: %d\n", ret); + goto err_core_stop; + } + ath11k_ahb_ext_irq_enable(ab); + mutex_unlock(&ab->core_lock); + + return 0; + +err_core_stop: + ath11k_core_stop(ab); +err_dp_free: + ath11k_dp_free(ab); + return ret; +} + +static int ath11k_core_reconfigure_on_crash(struct ath11k_base *ab) +{ + int ret; + + mutex_lock(&ab->core_lock); + ath11k_ahb_ext_irq_disable(ab); + ath11k_dp_pdev_free(ab); + ath11k_ahb_stop(ab); + ath11k_wmi_detach(ab); + mutex_unlock(&ab->core_lock); + + ath11k_dp_free(ab); + ath11k_hal_srng_deinit(ab); + + ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS)) - 1; + + ret = ath11k_hal_srng_init(ab); + if (ret) + return ret; + + clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags); + + ret = ath11k_core_qmi_firmware_ready(ab); + if (ret) + goto err_hal_srng_deinit; + + clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags); + + return 0; + +err_hal_srng_deinit: + ath11k_hal_srng_deinit(ab); + return ret; +} + +void ath11k_core_halt(struct ath11k *ar) +{ + struct ath11k_base *ab = ar->ab; + + lockdep_assert_held(&ar->conf_mutex); + + ar->num_created_vdevs = 0; + + ath11k_mac_scan_finish(ar); + ath11k_mac_peer_cleanup_all(ar); + cancel_delayed_work_sync(&ar->scan.timeout); + cancel_work_sync(&ar->regd_update_work); + + rcu_assign_pointer(ab->pdevs_active[ar->pdev_idx], NULL); + synchronize_rcu(); + INIT_LIST_HEAD(&ar->arvifs); + idr_init(&ar->txmgmt_idr); +} + +static void ath11k_core_restart(struct work_struct *work) +{ + struct ath11k_base *ab = container_of(work, struct ath11k_base, restart_work); + struct ath11k *ar; + struct ath11k_pdev *pdev; + int i, ret = 0; + + spin_lock_bh(&ab->base_lock); + ab->stats.fw_crash_counter++; + spin_unlock_bh(&ab->base_lock); + + for (i = 0; i < ab->num_radios; i++) { + pdev = &ab->pdevs[i]; + ar = pdev->ar; + if (!ar || ar->state == ATH11K_STATE_OFF) + continue; + + ieee80211_stop_queues(ar->hw); + ath11k_mac_drain_tx(ar); + complete(&ar->scan.started); + complete(&ar->scan.completed); + complete(&ar->peer_assoc_done); + complete(&ar->install_key_done); + complete(&ar->vdev_setup_done); + complete(&ar->bss_survey_done); + + wake_up(&ar->dp.tx_empty_waitq); + idr_for_each(&ar->txmgmt_idr, + ath11k_mac_tx_mgmt_pending_free, ar); + idr_destroy(&ar->txmgmt_idr); + } + + wake_up(&ab->wmi_sc.tx_credits_wq); + wake_up(&ab->peer_mapping_wq); + + ret = ath11k_core_reconfigure_on_crash(ab); + if (ret) { + ath11k_err(ab, "failed to reconfigure driver on crash recovery\n"); + return; + } + + for (i = 0; i < ab->num_radios; i++) { + pdev = &ab->pdevs[i]; + ar = pdev->ar; + if (!ar || ar->state == ATH11K_STATE_OFF) + continue; + + mutex_lock(&ar->conf_mutex); + + switch (ar->state) { + case ATH11K_STATE_ON: + ar->state = ATH11K_STATE_RESTARTING; + ath11k_core_halt(ar); + ieee80211_restart_hw(ar->hw); + break; + case ATH11K_STATE_OFF: + ath11k_warn(ab, + "cannot restart radio %d that hasn't been started\n", + i); + break; + case ATH11K_STATE_RESTARTING: + break; + case ATH11K_STATE_RESTARTED: + ar->state = ATH11K_STATE_WEDGED; + /* fall through */ + case ATH11K_STATE_WEDGED: + ath11k_warn(ab, + "device is wedged, will not restart radio %d\n", i); + break; + } + mutex_unlock(&ar->conf_mutex); + } + complete(&ab->driver_recovery); +} + +int ath11k_core_init(struct ath11k_base *ab) +{ + struct device *dev = ab->dev; + struct rproc *prproc; + phandle rproc_phandle; + int ret; + + if (of_property_read_u32(dev->of_node, "qcom,rproc", &rproc_phandle)) { + ath11k_err(ab, "failed to get q6_rproc handle\n"); + return -ENOENT; + } + + prproc = rproc_get_by_phandle(rproc_phandle); + if (!prproc) { + ath11k_err(ab, "failed to get rproc\n"); + return -EINVAL; + } + ab->tgt_rproc = prproc; + ab->hw_params = ath11k_hw_params; + + ret = ath11k_core_soc_create(ab); + if (ret) { + ath11k_err(ab, "failed to create soc core: %d\n", ret); + return ret; + } + + return 0; +} + +void ath11k_core_deinit(struct ath11k_base *ab) +{ + mutex_lock(&ab->core_lock); + + ath11k_core_pdev_destroy(ab); + ath11k_core_stop(ab); + + mutex_unlock(&ab->core_lock); + + ath11k_ahb_power_down(ab); + ath11k_mac_destroy(ab); + ath11k_core_soc_destroy(ab); +} + +void ath11k_core_free(struct ath11k_base *ab) +{ + kfree(ab); +} + +struct ath11k_base *ath11k_core_alloc(struct device *dev) +{ + struct ath11k_base *ab; + + ab = kzalloc(sizeof(*ab), GFP_KERNEL); + if (!ab) + return NULL; + + init_completion(&ab->driver_recovery); + + ab->workqueue = create_singlethread_workqueue("ath11k_wq"); + if (!ab->workqueue) + goto err_sc_free; + + mutex_init(&ab->core_lock); + spin_lock_init(&ab->base_lock); + + INIT_LIST_HEAD(&ab->peers); + init_waitqueue_head(&ab->peer_mapping_wq); + init_waitqueue_head(&ab->wmi_sc.tx_credits_wq); + INIT_WORK(&ab->restart_work, ath11k_core_restart); + timer_setup(&ab->rx_replenish_retry, ath11k_ce_rx_replenish_retry, 0); + ab->dev = dev; + + return ab; + +err_sc_free: + kfree(ab); + return NULL; +} + +static int __init ath11k_init(void) +{ + int ret; + + ret = ath11k_ahb_init(); + if (ret) + printk(KERN_ERR "failed to register ath11k ahb driver: %d\n", + ret); + return ret; +} +module_init(ath11k_init); + +static void __exit ath11k_exit(void) +{ + ath11k_ahb_exit(); +} +module_exit(ath11k_exit); + +MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11ax wireless chip"); +MODULE_LICENSE("Dual BSD/GPL"); From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iM84X-0000F9-NV for ath11k@lists.infradead.org; Sun, 20 Oct 2019 10:04:28 +0000 From: Kalle Valo Subject: [PATCH v2 08/49] ath11k: add core.c Date: Sun, 20 Oct 2019 13:03:26 +0300 Message-Id: <1571565847-10338-9-git-send-email-kvalo@codeaurora.org> In-Reply-To: <1571565847-10338-1-git-send-email-kvalo@codeaurora.org> References: <1571565847-10338-1-git-send-email-kvalo@codeaurora.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath11k" Errors-To: ath11k-bounces+kvalo=adurom.com@lists.infradead.org To: linux-wireless@vger.kernel.org Cc: devicetree@vger.kernel.org, ath11k@lists.infradead.org (patches split for easier review, see the cover letter for more) Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath11k/core.c | 772 +++++++++++++++++++++++++++++++++ 1 file changed, 772 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c new file mode 100644 index 000000000000..b0c71b5879b1 --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/core.c @@ -0,0 +1,772 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include "ahb.h" +#include "core.h" +#include "dp_tx.h" +#include "debug.h" + +unsigned int ath11k_debug_mask; +module_param_named(debug_mask, ath11k_debug_mask, uint, 0644); +MODULE_PARM_DESC(debug_mask, "Debugging mask"); + +static const struct ath11k_hw_params ath11k_hw_params = { + .name = "ipq8074", + .fw = { + .dir = IPQ8074_FW_DIR, + .board_size = IPQ8074_MAX_BOARD_DATA_SZ, + .cal_size = IPQ8074_MAX_CAL_DATA_SZ, + }, +}; + +/* Map from pdev index to hw mac index */ +u8 ath11k_core_get_hw_mac_id(struct ath11k_base *ab, int pdev_idx) +{ + switch (pdev_idx) { + case 0: + return 0; + case 1: + return 2; + case 2: + return 1; + default: + ath11k_warn(ab, "Invalid pdev idx %d\n", pdev_idx); + return ATH11K_INVALID_HW_MAC_ID; + } +} + +static int ath11k_core_create_board_name(struct ath11k_base *ab, char *name, + size_t name_len) +{ + /* Note: bus is fixed to ahb. When other bus type supported, + * make it to dynamic. + */ + scnprintf(name, name_len, + "bus=ahb,qmi-chip-id=%d,qmi-board-id=%d", + ab->qmi.target.chip_id, + ab->qmi.target.board_id); + + ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot using board name '%s'\n", name); + + return 0; +} + +static const struct firmware *ath11k_fetch_fw_file(struct ath11k_base *ab, + const char *dir, + const char *file) +{ + char filename[100]; + const struct firmware *fw; + int ret; + + if (file == NULL) + return ERR_PTR(-ENOENT); + + if (dir == NULL) + dir = "."; + + snprintf(filename, sizeof(filename), "%s/%s", dir, file); + ret = firmware_request_nowarn(&fw, filename, ab->dev); + ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot fw request '%s': %d\n", + filename, ret); + + if (ret) + return ERR_PTR(ret); + ath11k_warn(ab, "Downloading BDF: %s, size: %zu\n", + filename, fw->size); + + return fw; +} + +void ath11k_core_free_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd) +{ + if (!IS_ERR(bd->fw)) + release_firmware(bd->fw); + + memset(bd, 0, sizeof(*bd)); +} + +static int ath11k_core_parse_bd_ie_board(struct ath11k_base *ab, + struct ath11k_board_data *bd, + const void *buf, size_t buf_len, + const char *boardname, + int bd_ie_type) +{ + const struct ath11k_fw_ie *hdr; + bool name_match_found; + int ret, board_ie_id; + size_t board_ie_len; + const void *board_ie_data; + + name_match_found = false; + + /* go through ATH11K_BD_IE_BOARD_ elements */ + while (buf_len > sizeof(struct ath11k_fw_ie)) { + hdr = buf; + board_ie_id = le32_to_cpu(hdr->id); + board_ie_len = le32_to_cpu(hdr->len); + board_ie_data = hdr->data; + + buf_len -= sizeof(*hdr); + buf += sizeof(*hdr); + + if (buf_len < ALIGN(board_ie_len, 4)) { + ath11k_err(ab, "invalid ATH11K_BD_IE_BOARD length: %zu < %zu\n", + buf_len, ALIGN(board_ie_len, 4)); + ret = -EINVAL; + goto out; + } + + switch (board_ie_id) { + case ATH11K_BD_IE_BOARD_NAME: + ath11k_dbg_dump(ab, ATH11K_DBG_BOOT, "board name", "", + board_ie_data, board_ie_len); + + if (board_ie_len != strlen(boardname)) + break; + + ret = memcmp(board_ie_data, boardname, strlen(boardname)); + if (ret) + break; + + name_match_found = true; + ath11k_dbg(ab, ATH11K_DBG_BOOT, + "boot found match for name '%s'", + boardname); + break; + case ATH11K_BD_IE_BOARD_DATA: + if (!name_match_found) + /* no match found */ + break; + + ath11k_dbg(ab, ATH11K_DBG_BOOT, + "boot found board data for '%s'", boardname); + + bd->data = board_ie_data; + bd->len = board_ie_len; + + ret = 0; + goto out; + default: + ath11k_warn(ab, "unknown ATH11K_BD_IE_BOARD found: %d\n", + board_ie_id); + break; + } + + /* jump over the padding */ + board_ie_len = ALIGN(board_ie_len, 4); + + buf_len -= board_ie_len; + buf += board_ie_len; + } + + /* no match found */ + ret = -ENOENT; + +out: + return ret; +} + +static int ath11k_core_fetch_board_data_api_n(struct ath11k_base *ab, + struct ath11k_board_data *bd, + const char *boardname) +{ + size_t len, magic_len; + const u8 *data; + char *filename = ATH11K_BOARD_API2_FILE; + size_t ie_len; + struct ath11k_fw_ie *hdr; + int ret, ie_id; + + if (!bd->fw) + bd->fw = ath11k_fetch_fw_file(ab, + ab->hw_params.fw.dir, + filename); + if (IS_ERR(bd->fw)) + return PTR_ERR(bd->fw); + + data = bd->fw->data; + len = bd->fw->size; + + /* magic has extra null byte padded */ + magic_len = strlen(ATH11K_BOARD_MAGIC) + 1; + if (len < magic_len) { + ath11k_err(ab, "failed to find magic value in %s/%s, file too short: %zu\n", + ab->hw_params.fw.dir, filename, len); + ret = -EINVAL; + goto err; + } + + if (memcmp(data, ATH11K_BOARD_MAGIC, magic_len)) { + ath11k_err(ab, "found invalid board magic\n"); + ret = -EINVAL; + goto err; + } + + /* magic is padded to 4 bytes */ + magic_len = ALIGN(magic_len, 4); + if (len < magic_len) { + ath11k_err(ab, "failed: %s/%s too small to contain board data, len: %zu\n", + ab->hw_params.fw.dir, filename, len); + ret = -EINVAL; + goto err; + } + + data += magic_len; + len -= magic_len; + + while (len > sizeof(struct ath11k_fw_ie)) { + hdr = (struct ath11k_fw_ie *)data; + ie_id = le32_to_cpu(hdr->id); + ie_len = le32_to_cpu(hdr->len); + + len -= sizeof(*hdr); + data = hdr->data; + + if (len < ALIGN(ie_len, 4)) { + ath11k_err(ab, "invalid length for board ie_id %d ie_len %zu len %zu\n", + ie_id, ie_len, len); + return -EINVAL; + } + + switch (ie_id) { + case ATH11K_BD_IE_BOARD: + ret = ath11k_core_parse_bd_ie_board(ab, bd, data, + ie_len, + boardname, + ATH11K_BD_IE_BOARD); + if (ret == -ENOENT) + /* no match found, continue */ + break; + else if (ret) + /* there was an error, bail out */ + goto err; + /* either found or error, so stop searching */ + goto out; + } + + /* jump over the padding */ + ie_len = ALIGN(ie_len, 4); + + len -= ie_len; + data += ie_len; + } + +out: + if (!bd->data || !bd->len) { + ath11k_err(ab, + "failed to fetch board data for %s from %s/%s\n", + boardname, ab->hw_params.fw.dir, filename); + ret = -ENODATA; + goto err; + } + + return 0; + +err: + ath11k_core_free_bdf(ab, bd); + return ret; +} + +static int ath11k_core_fetch_board_data_api_1(struct ath11k_base *ab, + struct ath11k_board_data *bd) +{ + bd->fw = ath11k_fetch_fw_file(ab, + ab->hw_params.fw.dir, + ATH11K_DEFAULT_BOARD_FILE); + if (IS_ERR(bd->fw)) + return PTR_ERR(bd->fw); + + bd->data = bd->fw->data; + bd->len = bd->fw->size; + + return 0; +} + +#define BOARD_NAME_SIZE 100 +int ath11k_core_fetch_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd) +{ + char boardname[BOARD_NAME_SIZE]; + int ret; + + ret = ath11k_core_create_board_name(ab, boardname, BOARD_NAME_SIZE); + if (ret) { + ath11k_err(ab, "failed to create board name: %d", ret); + return ret; + } + + ab->bd_api = 2; + ret = ath11k_core_fetch_board_data_api_n(ab, bd, boardname); + if (!ret) + goto success; + + ab->bd_api = 1; + ret = ath11k_core_fetch_board_data_api_1(ab, bd); + if (ret) { + ath11k_err(ab, "failed to fetch board-2.bin or board.bin from %s\n", + ab->hw_params.fw.dir); + return ret; + } + +success: + ath11k_dbg(ab, ATH11K_DBG_BOOT, "using board api %d\n", ab->bd_api); + return 0; +} + +static void ath11k_core_stop(struct ath11k_base *ab) +{ + if (!test_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags)) + ath11k_qmi_firmware_stop(ab); + ath11k_ahb_stop(ab); + ath11k_wmi_detach(ab); + + /* De-Init of components as needed */ +} + +static int ath11k_core_soc_create(struct ath11k_base *ab) +{ + int ret; + + ret = ath11k_qmi_init_service(ab); + if (ret) { + ath11k_err(ab, "failed to initialize qmi :%d\n", ret); + return ret; + } + + ret = ath11k_debug_soc_create(ab); + if (ret) { + ath11k_err(ab, "failed to create ath11k debugfs\n"); + goto err_qmi_deinit; + } + + ret = ath11k_ahb_power_up(ab); + if (ret) { + ath11k_err(ab, "failed to power up :%d\n", ret); + goto err_debugfs_reg; + } + + return 0; + +err_debugfs_reg: + ath11k_debug_soc_destroy(ab); +err_qmi_deinit: + ath11k_qmi_deinit_service(ab); + return ret; +} + +static void ath11k_core_soc_destroy(struct ath11k_base *ab) +{ + ath11k_debug_soc_destroy(ab); + ath11k_dp_free(ab); + ath11k_reg_free(ab); + ath11k_qmi_deinit_service(ab); +} + +static int ath11k_core_pdev_create(struct ath11k_base *ab) +{ + int ret; + + ret = ath11k_debug_pdev_create(ab); + if (ret) { + ath11k_err(ab, "failed to create core pdev debugfs: %d\n", ret); + return ret; + } + + ret = ath11k_mac_create(ab); + if (ret) { + ath11k_err(ab, "failed to create new hw device with mac80211 :%d\n", + ret); + goto err_pdev_debug; + } + + ret = ath11k_dp_pdev_alloc(ab); + if (ret) { + ath11k_err(ab, "failed to attach DP pdev: %d\n", ret); + goto err_mac_destroy; + } + + return 0; + +err_mac_destroy: + ath11k_mac_destroy(ab); + +err_pdev_debug: + ath11k_debug_pdev_destroy(ab); + + return ret; +} + +static void ath11k_core_pdev_destroy(struct ath11k_base *ab) +{ + ath11k_mac_unregister(ab); + ath11k_ahb_ext_irq_disable(ab); + ath11k_dp_pdev_free(ab); + ath11k_debug_pdev_destroy(ab); +} + +static int ath11k_core_start(struct ath11k_base *ab, + enum ath11k_firmware_mode mode) +{ + int ret; + + ret = ath11k_qmi_firmware_start(ab, mode); + if (ret) { + ath11k_err(ab, "failed to attach wmi: %d\n", ret); + return ret; + } + + ret = ath11k_wmi_attach(ab); + if (ret) { + ath11k_err(ab, "failed to attach wmi: %d\n", ret); + goto err_firmware_stop; + } + + ret = ath11k_htc_init(ab); + if (ret) { + ath11k_err(ab, "failed to init htc: %d\n", ret); + goto err_wmi_detach; + } + + ret = ath11k_ahb_start(ab); + if (ret) { + ath11k_err(ab, "failed to start HIF: %d\n", ret); + goto err_wmi_detach; + } + + ret = ath11k_htc_wait_target(&ab->htc); + if (ret) { + ath11k_err(ab, "failed to connect to HTC: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_dp_htt_connect(&ab->dp); + if (ret) { + ath11k_err(ab, "failed to connect to HTT: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_connect(ab); + if (ret) { + ath11k_err(ab, "failed to connect wmi: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_htc_start(&ab->htc); + if (ret) { + ath11k_err(ab, "failed to start HTC: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_wait_for_service_ready(ab); + if (ret) { + ath11k_err(ab, "failed to receive wmi service ready event: %d\n", + ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_cmd_init(ab); + if (ret) { + ath11k_err(ab, "failed to send wmi init cmd: %d\n", ret); + goto err_hif_stop; + } + + ret = ath11k_wmi_wait_for_unified_ready(ab); + if (ret) { + ath11k_err(ab, "failed to receive wmi unified ready event: %d\n", + ret); + goto err_hif_stop; + } + + ret = ath11k_dp_tx_htt_h2t_ver_req_msg(ab); + if (ret) { + ath11k_err(ab, "failed to send htt version request message: %d\n", + ret); + goto err_hif_stop; + } + + return 0; + +err_hif_stop: + ath11k_ahb_stop(ab); +err_wmi_detach: + ath11k_wmi_detach(ab); +err_firmware_stop: + ath11k_qmi_firmware_stop(ab); + + return ret; +} + +int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab) +{ + int ret; + + ret = ath11k_ce_init_pipes(ab); + if (ret) { + ath11k_err(ab, "failed to initialize CE: %d\n", ret); + return ret; + } + + ret = ath11k_dp_alloc(ab); + if (ret) { + ath11k_err(ab, "failed to init DP: %d\n", ret); + return ret; + } + + mutex_lock(&ab->core_lock); + ret = ath11k_core_start(ab, ATH11K_FIRMWARE_MODE_NORMAL); + if (ret) { + ath11k_err(ab, "failed to start core: %d\n", ret); + goto err_dp_free; + } + + ret = ath11k_core_pdev_create(ab); + if (ret) { + ath11k_err(ab, "failed to create pdev core: %d\n", ret); + goto err_core_stop; + } + ath11k_ahb_ext_irq_enable(ab); + mutex_unlock(&ab->core_lock); + + return 0; + +err_core_stop: + ath11k_core_stop(ab); +err_dp_free: + ath11k_dp_free(ab); + return ret; +} + +static int ath11k_core_reconfigure_on_crash(struct ath11k_base *ab) +{ + int ret; + + mutex_lock(&ab->core_lock); + ath11k_ahb_ext_irq_disable(ab); + ath11k_dp_pdev_free(ab); + ath11k_ahb_stop(ab); + ath11k_wmi_detach(ab); + mutex_unlock(&ab->core_lock); + + ath11k_dp_free(ab); + ath11k_hal_srng_deinit(ab); + + ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS)) - 1; + + ret = ath11k_hal_srng_init(ab); + if (ret) + return ret; + + clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags); + + ret = ath11k_core_qmi_firmware_ready(ab); + if (ret) + goto err_hal_srng_deinit; + + clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags); + + return 0; + +err_hal_srng_deinit: + ath11k_hal_srng_deinit(ab); + return ret; +} + +void ath11k_core_halt(struct ath11k *ar) +{ + struct ath11k_base *ab = ar->ab; + + lockdep_assert_held(&ar->conf_mutex); + + ar->num_created_vdevs = 0; + + ath11k_mac_scan_finish(ar); + ath11k_mac_peer_cleanup_all(ar); + cancel_delayed_work_sync(&ar->scan.timeout); + cancel_work_sync(&ar->regd_update_work); + + rcu_assign_pointer(ab->pdevs_active[ar->pdev_idx], NULL); + synchronize_rcu(); + INIT_LIST_HEAD(&ar->arvifs); + idr_init(&ar->txmgmt_idr); +} + +static void ath11k_core_restart(struct work_struct *work) +{ + struct ath11k_base *ab = container_of(work, struct ath11k_base, restart_work); + struct ath11k *ar; + struct ath11k_pdev *pdev; + int i, ret = 0; + + spin_lock_bh(&ab->base_lock); + ab->stats.fw_crash_counter++; + spin_unlock_bh(&ab->base_lock); + + for (i = 0; i < ab->num_radios; i++) { + pdev = &ab->pdevs[i]; + ar = pdev->ar; + if (!ar || ar->state == ATH11K_STATE_OFF) + continue; + + ieee80211_stop_queues(ar->hw); + ath11k_mac_drain_tx(ar); + complete(&ar->scan.started); + complete(&ar->scan.completed); + complete(&ar->peer_assoc_done); + complete(&ar->install_key_done); + complete(&ar->vdev_setup_done); + complete(&ar->bss_survey_done); + + wake_up(&ar->dp.tx_empty_waitq); + idr_for_each(&ar->txmgmt_idr, + ath11k_mac_tx_mgmt_pending_free, ar); + idr_destroy(&ar->txmgmt_idr); + } + + wake_up(&ab->wmi_sc.tx_credits_wq); + wake_up(&ab->peer_mapping_wq); + + ret = ath11k_core_reconfigure_on_crash(ab); + if (ret) { + ath11k_err(ab, "failed to reconfigure driver on crash recovery\n"); + return; + } + + for (i = 0; i < ab->num_radios; i++) { + pdev = &ab->pdevs[i]; + ar = pdev->ar; + if (!ar || ar->state == ATH11K_STATE_OFF) + continue; + + mutex_lock(&ar->conf_mutex); + + switch (ar->state) { + case ATH11K_STATE_ON: + ar->state = ATH11K_STATE_RESTARTING; + ath11k_core_halt(ar); + ieee80211_restart_hw(ar->hw); + break; + case ATH11K_STATE_OFF: + ath11k_warn(ab, + "cannot restart radio %d that hasn't been started\n", + i); + break; + case ATH11K_STATE_RESTARTING: + break; + case ATH11K_STATE_RESTARTED: + ar->state = ATH11K_STATE_WEDGED; + /* fall through */ + case ATH11K_STATE_WEDGED: + ath11k_warn(ab, + "device is wedged, will not restart radio %d\n", i); + break; + } + mutex_unlock(&ar->conf_mutex); + } + complete(&ab->driver_recovery); +} + +int ath11k_core_init(struct ath11k_base *ab) +{ + struct device *dev = ab->dev; + struct rproc *prproc; + phandle rproc_phandle; + int ret; + + if (of_property_read_u32(dev->of_node, "qcom,rproc", &rproc_phandle)) { + ath11k_err(ab, "failed to get q6_rproc handle\n"); + return -ENOENT; + } + + prproc = rproc_get_by_phandle(rproc_phandle); + if (!prproc) { + ath11k_err(ab, "failed to get rproc\n"); + return -EINVAL; + } + ab->tgt_rproc = prproc; + ab->hw_params = ath11k_hw_params; + + ret = ath11k_core_soc_create(ab); + if (ret) { + ath11k_err(ab, "failed to create soc core: %d\n", ret); + return ret; + } + + return 0; +} + +void ath11k_core_deinit(struct ath11k_base *ab) +{ + mutex_lock(&ab->core_lock); + + ath11k_core_pdev_destroy(ab); + ath11k_core_stop(ab); + + mutex_unlock(&ab->core_lock); + + ath11k_ahb_power_down(ab); + ath11k_mac_destroy(ab); + ath11k_core_soc_destroy(ab); +} + +void ath11k_core_free(struct ath11k_base *ab) +{ + kfree(ab); +} + +struct ath11k_base *ath11k_core_alloc(struct device *dev) +{ + struct ath11k_base *ab; + + ab = kzalloc(sizeof(*ab), GFP_KERNEL); + if (!ab) + return NULL; + + init_completion(&ab->driver_recovery); + + ab->workqueue = create_singlethread_workqueue("ath11k_wq"); + if (!ab->workqueue) + goto err_sc_free; + + mutex_init(&ab->core_lock); + spin_lock_init(&ab->base_lock); + + INIT_LIST_HEAD(&ab->peers); + init_waitqueue_head(&ab->peer_mapping_wq); + init_waitqueue_head(&ab->wmi_sc.tx_credits_wq); + INIT_WORK(&ab->restart_work, ath11k_core_restart); + timer_setup(&ab->rx_replenish_retry, ath11k_ce_rx_replenish_retry, 0); + ab->dev = dev; + + return ab; + +err_sc_free: + kfree(ab); + return NULL; +} + +static int __init ath11k_init(void) +{ + int ret; + + ret = ath11k_ahb_init(); + if (ret) + printk(KERN_ERR "failed to register ath11k ahb driver: %d\n", + ret); + return ret; +} +module_init(ath11k_init); + +static void __exit ath11k_exit(void) +{ + ath11k_ahb_exit(); +} +module_exit(ath11k_exit); + +MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11ax wireless chip"); +MODULE_LICENSE("Dual BSD/GPL"); _______________________________________________ ath11k mailing list ath11k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath11k