From patchwork Fri Aug 12 16:09:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 597216 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 F2AC6C25B0E for ; Fri, 12 Aug 2022 16:10:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239180AbiHLQK0 (ORCPT ); Fri, 12 Aug 2022 12:10:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239157AbiHLQKU (ORCPT ); Fri, 12 Aug 2022 12:10:20 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2D7A18E19 for ; Fri, 12 Aug 2022 09:10:15 -0700 (PDT) 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 sin.source.kernel.org (Postfix) with ESMTPS id C110CCE2495 for ; Fri, 12 Aug 2022 16:10:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7ED86C433D7; Fri, 12 Aug 2022 16:10:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660320612; bh=OXdn+BSYBoB1FiOyvbs1a1LgaxzWnqMO2SiM92/MK9E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c6pT2czHhzkGRoaLiziypQw/mTrpctIll5DnIxUArct2EorO5W8bvfHKKQz+Nq+vt ukqYo+KlkZPV3iJvtWip/a6kXNeJ7XFdTGWB5r+kWU8GG1ebCteqXiaOk/hnOED9LI 81MqXS97ikldR4wMlRj7EkeR83ofBwmoXToHSDNxXYfS2oTwwV/K91OEBdjlx3eBof NQOVDinN/7l9HpW2KR/lIwiMvexsP9P0lEs7QkxvzZYm/qUfPiNbZ4JjPgk50C13NY B7xKYDcR545cj1CYlT6DdJBewisd4OV51lXSh5lyG/8zRdLhF06ph9H6BQwtNvSw4y dFXrSVU/MraNg== From: Kalle Valo To: linux-wireless@vger.kernel.org Cc: ath12k@lists.infradead.org Subject: [PATCH 05/50] wifi: ath12k: add core.c Date: Fri, 12 Aug 2022 19:09:18 +0300 Message-Id: <20220812161003.27279-6-kvalo@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220812161003.27279-1-kvalo@kernel.org> References: <20220812161003.27279-1-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/core.c | 937 +++++++++++++++++++++++++++++++++ 1 file changed, 937 insertions(+) diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c new file mode 100644 index 000000000000..476c5ba55fb2 --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -0,0 +1,937 @@ +// 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. + */ + +#include +#include +#include +#include +#include +#include "core.h" +#include "dp_tx.h" +#include "dp_rx.h" +#include "debug.h" +#include "hif.h" + +unsigned int ath12k_debug_mask; +module_param_named(debug_mask, ath12k_debug_mask, uint, 0644); +MODULE_PARM_DESC(debug_mask, "Debugging mask"); + +int ath12k_core_suspend(struct ath12k_base *ab) +{ + int ret; + + if (!ab->hw_params->supports_suspend) + return -EOPNOTSUPP; + + /* TODO: there can frames in queues so for now add delay as a hack. + * Need to implement to handle and remove this delay. + */ + msleep(500); + + ret = ath12k_dp_rx_pktlog_stop(ab, true); + if (ret) { + ath12k_warn(ab, "failed to stop dp rx (and timer) pktlog during suspend: %d\n", + ret); + return ret; + } + + ret = ath12k_dp_rx_pktlog_stop(ab, false); + if (ret) { + ath12k_warn(ab, "failed to stop dp rx pktlog during suspend: %d\n", + ret); + return ret; + } + + ath12k_hif_irq_disable(ab); + ath12k_hif_ce_irq_disable(ab); + + ret = ath12k_hif_suspend(ab); + if (ret) { + ath12k_warn(ab, "failed to suspend hif: %d\n", ret); + return ret; + } + + return 0; +} + +int ath12k_core_resume(struct ath12k_base *ab) +{ + int ret; + + if (!ab->hw_params->supports_suspend) + return -EOPNOTSUPP; + + ret = ath12k_hif_resume(ab); + if (ret) { + ath12k_warn(ab, "failed to resume hif during resume: %d\n", ret); + return ret; + } + + ath12k_hif_ce_irq_enable(ab); + ath12k_hif_irq_enable(ab); + + ret = ath12k_dp_rx_pktlog_start(ab); + if (ret) { + ath12k_warn(ab, "failed to start rx pktlog during resume: %d\n", + ret); + return ret; + } + + return 0; +} + +static int ath12k_core_create_board_name(struct ath12k_base *ab, char *name, + size_t name_len) +{ + /* strlen(',variant=') + strlen(ab->qmi.target.bdf_ext) */ + char variant[9 + ATH12K_QMI_BDF_EXT_STR_LENGTH] = { 0 }; + + if (ab->qmi.target.bdf_ext[0] != '\0') + scnprintf(variant, sizeof(variant), ",variant=%s", + ab->qmi.target.bdf_ext); + + scnprintf(name, name_len, + "bus=%s,qmi-chip-id=%d,qmi-board-id=%d%s", + ath12k_bus_str(ab->hif.bus), + ab->qmi.target.chip_id, + ab->qmi.target.board_id, variant); + + ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot using board name '%s'\n", name); + + return 0; +} + +const struct firmware *ath12k_core_firmware_request(struct ath12k_base *ab, + const char *file) +{ + const struct firmware *fw; + char path[100]; + int ret; + + if (!file) + return ERR_PTR(-ENOENT); + + ath12k_core_create_firmware_path(ab, file, path, sizeof(path)); + + ret = firmware_request_nowarn(&fw, path, ab->dev); + if (ret) + return ERR_PTR(ret); + + ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot firmware request %s size %zu\n", + path, fw->size); + + return fw; +} + +void ath12k_core_free_bdf(struct ath12k_base *ab, struct ath12k_board_data *bd) +{ + if (!IS_ERR(bd->fw)) + release_firmware(bd->fw); + + memset(bd, 0, sizeof(*bd)); +} + +static int ath12k_core_parse_bd_ie_board(struct ath12k_base *ab, + struct ath12k_board_data *bd, + const void *buf, size_t buf_len, + const char *boardname, + int bd_ie_type) +{ + const struct ath12k_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 ATH12K_BD_IE_BOARD_ elements */ + while (buf_len > sizeof(struct ath12k_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)) { + ath12k_err(ab, "invalid ATH12K_BD_IE_BOARD length: %zu < %zu\n", + buf_len, ALIGN(board_ie_len, 4)); + ret = -EINVAL; + goto out; + } + + switch (board_ie_id) { + case ATH12K_BD_IE_BOARD_NAME: + ath12k_dbg_dump(ab, ATH12K_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; + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "boot found match for name '%s'", + boardname); + break; + case ATH12K_BD_IE_BOARD_DATA: + if (!name_match_found) + /* no match found */ + break; + + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "boot found board data for '%s'", boardname); + + bd->data = board_ie_data; + bd->len = board_ie_len; + + ret = 0; + goto out; + default: + ath12k_warn(ab, "unknown ATH12K_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 ath12k_core_fetch_board_data_api_n(struct ath12k_base *ab, + struct ath12k_board_data *bd, + const char *boardname) +{ + size_t len, magic_len; + const u8 *data; + char *filename, filepath[100]; + size_t ie_len; + struct ath12k_fw_ie *hdr; + int ret, ie_id; + + filename = ATH12K_BOARD_API2_FILE; + + if (!bd->fw) + bd->fw = ath12k_core_firmware_request(ab, filename); + + if (IS_ERR(bd->fw)) + return PTR_ERR(bd->fw); + + data = bd->fw->data; + len = bd->fw->size; + + ath12k_core_create_firmware_path(ab, filename, + filepath, sizeof(filepath)); + + /* magic has extra null byte padded */ + magic_len = strlen(ATH12K_BOARD_MAGIC) + 1; + if (len < magic_len) { + ath12k_err(ab, "failed to find magic value in %s, file too short: %zu\n", + filepath, len); + ret = -EINVAL; + goto err; + } + + if (memcmp(data, ATH12K_BOARD_MAGIC, magic_len)) { + ath12k_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) { + ath12k_err(ab, "failed: %s too small to contain board data, len: %zu\n", + filepath, len); + ret = -EINVAL; + goto err; + } + + data += magic_len; + len -= magic_len; + + while (len > sizeof(struct ath12k_fw_ie)) { + hdr = (struct ath12k_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)) { + ath12k_err(ab, "invalid length for board ie_id %d ie_len %zu len %zu\n", + ie_id, ie_len, len); + ret = -EINVAL; + goto err; + } + + switch (ie_id) { + case ATH12K_BD_IE_BOARD: + ret = ath12k_core_parse_bd_ie_board(ab, bd, data, + ie_len, + boardname, + ATH12K_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) { + ath12k_err(ab, + "failed to fetch board data for %s from %s\n", + boardname, filepath); + ret = -ENODATA; + goto err; + } + + return 0; + +err: + ath12k_core_free_bdf(ab, bd); + return ret; +} + +int ath12k_core_fetch_board_data_api_1(struct ath12k_base *ab, + struct ath12k_board_data *bd, + char *filename) +{ + bd->fw = ath12k_core_firmware_request(ab, filename); + 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 ath12k_core_fetch_bdf(struct ath12k_base *ab, struct ath12k_board_data *bd) +{ + char boardname[BOARD_NAME_SIZE]; + int ret; + + ret = ath12k_core_create_board_name(ab, boardname, BOARD_NAME_SIZE); + if (ret) { + ath12k_err(ab, "failed to create board name: %d", ret); + return ret; + } + + ab->bd_api = 2; + ret = ath12k_core_fetch_board_data_api_n(ab, bd, boardname); + if (!ret) + goto success; + + ab->bd_api = 1; + ret = ath12k_core_fetch_board_data_api_1(ab, bd, ATH12K_DEFAULT_BOARD_FILE); + if (ret) { + ath12k_err(ab, "failed to fetch board-2.bin or board.bin from %s\n", + ab->hw_params->fw.dir); + return ret; + } + +success: + ath12k_dbg(ab, ATH12K_DBG_BOOT, "using board api %d\n", ab->bd_api); + return 0; +} + +static void ath12k_core_stop(struct ath12k_base *ab) +{ + if (!test_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags)) + ath12k_qmi_firmware_stop(ab); + + ath12k_hif_stop(ab); + ath12k_wmi_detach(ab); + ath12k_dp_rx_pdev_reo_cleanup(ab); + + /* De-Init of components as needed */ +} + +static int ath12k_core_soc_create(struct ath12k_base *ab) +{ + int ret; + + ret = ath12k_qmi_init_service(ab); + if (ret) { + ath12k_err(ab, "failed to initialize qmi :%d\n", ret); + return ret; + } + + ret = ath12k_hif_power_up(ab); + if (ret) { + ath12k_err(ab, "failed to power up :%d\n", ret); + goto err_qmi_deinit; + } + + return 0; + +err_qmi_deinit: + ath12k_qmi_deinit_service(ab); + return ret; +} + +static void ath12k_core_soc_destroy(struct ath12k_base *ab) +{ + ath12k_dp_free(ab); + ath12k_reg_free(ab); + ath12k_qmi_deinit_service(ab); +} + +static int ath12k_core_pdev_create(struct ath12k_base *ab) +{ + int ret; + + ret = ath12k_mac_register(ab); + if (ret) { + ath12k_err(ab, "failed register the radio with mac80211: %d\n", ret); + return ret; + } + + ret = ath12k_dp_pdev_alloc(ab); + if (ret) { + ath12k_err(ab, "failed to attach DP pdev: %d\n", ret); + goto err_mac_unregister; + } + + return 0; + +err_mac_unregister: + ath12k_mac_unregister(ab); + + return ret; +} + +static void ath12k_core_pdev_destroy(struct ath12k_base *ab) +{ + ath12k_mac_unregister(ab); + ath12k_hif_irq_disable(ab); + ath12k_dp_pdev_free(ab); +} + +static int ath12k_core_start(struct ath12k_base *ab, + enum ath12k_firmware_mode mode) +{ + int ret; + + ret = ath12k_wmi_attach(ab); + if (ret) { + ath12k_err(ab, "failed to attach wmi: %d\n", ret); + return ret; + } + + ret = ath12k_htc_init(ab); + if (ret) { + ath12k_err(ab, "failed to init htc: %d\n", ret); + goto err_wmi_detach; + } + + ret = ath12k_hif_start(ab); + if (ret) { + ath12k_err(ab, "failed to start HIF: %d\n", ret); + goto err_wmi_detach; + } + + ret = ath12k_htc_wait_target(&ab->htc); + if (ret) { + ath12k_err(ab, "failed to connect to HTC: %d\n", ret); + goto err_hif_stop; + } + + ret = ath12k_dp_htt_connect(&ab->dp); + if (ret) { + ath12k_err(ab, "failed to connect to HTT: %d\n", ret); + goto err_hif_stop; + } + + ret = ath12k_wmi_connect(ab); + if (ret) { + ath12k_err(ab, "failed to connect wmi: %d\n", ret); + goto err_hif_stop; + } + + ret = ath12k_htc_start(&ab->htc); + if (ret) { + ath12k_err(ab, "failed to start HTC: %d\n", ret); + goto err_hif_stop; + } + + ret = ath12k_wmi_wait_for_service_ready(ab); + if (ret) { + ath12k_err(ab, "failed to receive wmi service ready event: %d\n", + ret); + goto err_hif_stop; + } + + ret = ath12k_mac_allocate(ab); + if (ret) { + ath12k_err(ab, "failed to create new hw device with mac80211 :%d\n", + ret); + goto err_hif_stop; + } + + ath12k_dp_cc_config(ab); + + ath12k_dp_pdev_pre_alloc(ab); + + ret = ath12k_dp_rx_pdev_reo_setup(ab); + if (ret) { + ath12k_err(ab, "failed to initialize reo destination rings: %d\n", ret); + goto err_mac_destroy; + } + + ret = ath12k_wmi_cmd_init(ab); + if (ret) { + ath12k_err(ab, "failed to send wmi init cmd: %d\n", ret); + goto err_reo_cleanup; + } + + ret = ath12k_wmi_wait_for_unified_ready(ab); + if (ret) { + ath12k_err(ab, "failed to receive wmi unified ready event: %d\n", + ret); + goto err_reo_cleanup; + } + + /* put hardware to DBS mode */ + if (ab->hw_params->single_pdev_only) { + ret = ath12k_wmi_set_hw_mode(ab, WMI_HOST_HW_MODE_DBS); + if (ret) { + ath12k_err(ab, "failed to send dbs mode: %d\n", ret); + goto err_hif_stop; + } + } + + ret = ath12k_dp_tx_htt_h2t_ver_req_msg(ab); + if (ret) { + ath12k_err(ab, "failed to send htt version request message: %d\n", + ret); + goto err_reo_cleanup; + } + + return 0; + +err_reo_cleanup: + ath12k_dp_rx_pdev_reo_cleanup(ab); +err_mac_destroy: + ath12k_mac_destroy(ab); +err_hif_stop: + ath12k_hif_stop(ab); +err_wmi_detach: + ath12k_wmi_detach(ab); + return ret; +} + +static int ath12k_core_start_firmware(struct ath12k_base *ab, + enum ath12k_firmware_mode mode) +{ + int ret; + + ath12k_ce_get_shadow_config(ab, &ab->qmi.ce_cfg.shadow_reg_v2, + &ab->qmi.ce_cfg.shadow_reg_v2_len); + + ret = ath12k_qmi_firmware_start(ab, mode); + if (ret) { + ath12k_err(ab, "failed to send firmware start: %d\n", ret); + return ret; + } + + return ret; +} + +int ath12k_core_qmi_firmware_ready(struct ath12k_base *ab) +{ + int ret; + + ret = ath12k_core_start_firmware(ab, ATH12K_FIRMWARE_MODE_NORMAL); + if (ret) { + ath12k_err(ab, "failed to start firmware: %d\n", ret); + return ret; + } + + ret = ath12k_ce_init_pipes(ab); + if (ret) { + ath12k_err(ab, "failed to initialize CE: %d\n", ret); + goto err_firmware_stop; + } + + ret = ath12k_dp_alloc(ab); + if (ret) { + ath12k_err(ab, "failed to init DP: %d\n", ret); + goto err_firmware_stop; + } + + mutex_lock(&ab->core_lock); + ret = ath12k_core_start(ab, ATH12K_FIRMWARE_MODE_NORMAL); + if (ret) { + ath12k_err(ab, "failed to start core: %d\n", ret); + goto err_dp_free; + } + + ret = ath12k_core_pdev_create(ab); + if (ret) { + ath12k_err(ab, "failed to create pdev core: %d\n", ret); + goto err_core_stop; + } + ath12k_hif_irq_enable(ab); + mutex_unlock(&ab->core_lock); + + return 0; + +err_core_stop: + ath12k_core_stop(ab); + ath12k_mac_destroy(ab); +err_dp_free: + ath12k_dp_free(ab); + mutex_unlock(&ab->core_lock); +err_firmware_stop: + ath12k_qmi_firmware_stop(ab); + + return ret; +} + +static int ath12k_core_reconfigure_on_crash(struct ath12k_base *ab) +{ + int ret; + + mutex_lock(&ab->core_lock); + ath12k_hif_irq_disable(ab); + ath12k_dp_pdev_free(ab); + ath12k_hif_stop(ab); + ath12k_wmi_detach(ab); + ath12k_dp_rx_pdev_reo_cleanup(ab); + mutex_unlock(&ab->core_lock); + + ath12k_dp_free(ab); + ath12k_hal_srng_deinit(ab); + + ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS)) - 1; + + ret = ath12k_hal_srng_init(ab); + if (ret) + return ret; + + clear_bit(ATH12K_FLAG_CRASH_FLUSH, &ab->dev_flags); + + ret = ath12k_core_qmi_firmware_ready(ab); + if (ret) + goto err_hal_srng_deinit; + + clear_bit(ATH12K_FLAG_RECOVERY, &ab->dev_flags); + + return 0; + +err_hal_srng_deinit: + ath12k_hal_srng_deinit(ab); + return ret; +} + +void ath12k_core_halt(struct ath12k *ar) +{ + struct ath12k_base *ab = ar->ab; + + lockdep_assert_held(&ar->conf_mutex); + + ar->num_created_vdevs = 0; + ar->allocated_vdev_map = 0; + + ath12k_mac_scan_finish(ar); + ath12k_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 ath12k_core_pre_reconfigure_recovery(struct ath12k_base *ab) +{ + struct ath12k *ar; + struct ath12k_pdev *pdev; + int i; + + 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 == ATH12K_STATE_OFF) + continue; + + ieee80211_stop_queues(ar->hw); + ath12k_mac_drain_tx(ar); + complete(&ar->scan.started); + complete(&ar->scan.completed); + complete(&ar->peer_assoc_done); + complete(&ar->peer_delete_done); + complete(&ar->install_key_done); + complete(&ar->vdev_setup_done); + complete(&ar->vdev_delete_done); + complete(&ar->bss_survey_done); + + wake_up(&ar->dp.tx_empty_waitq); + idr_for_each(&ar->txmgmt_idr, + ath12k_mac_tx_mgmt_pending_free, ar); + idr_destroy(&ar->txmgmt_idr); + } + + wake_up(&ab->wmi_ab.tx_credits_wq); + wake_up(&ab->peer_mapping_wq); +} + +static void ath12k_core_post_reconfigure_recovery(struct ath12k_base *ab) +{ + struct ath12k *ar; + struct ath12k_pdev *pdev; + int i; + + for (i = 0; i < ab->num_radios; i++) { + pdev = &ab->pdevs[i]; + ar = pdev->ar; + if (!ar || ar->state == ATH12K_STATE_OFF) + continue; + + mutex_lock(&ar->conf_mutex); + + switch (ar->state) { + case ATH12K_STATE_ON: + ar->state = ATH12K_STATE_RESTARTING; + ath12k_core_halt(ar); + ieee80211_restart_hw(ar->hw); + break; + case ATH12K_STATE_OFF: + ath12k_warn(ab, + "cannot restart radio %d that hasn't been started\n", + i); + break; + case ATH12K_STATE_RESTARTING: + break; + case ATH12K_STATE_RESTARTED: + ar->state = ATH12K_STATE_WEDGED; + fallthrough; + case ATH12K_STATE_WEDGED: + ath12k_warn(ab, + "device is wedged, will not restart radio %d\n", i); + break; + } + mutex_unlock(&ar->conf_mutex); + } + complete(&ab->driver_recovery); +} + +static void ath12k_core_restart(struct work_struct *work) +{ + struct ath12k_base *ab = container_of(work, struct ath12k_base, restart_work); + int ret; + + if (!ab->is_reset) + ath12k_core_pre_reconfigure_recovery(ab); + + ret = ath12k_core_reconfigure_on_crash(ab); + if (ret) { + ath12k_err(ab, "failed to reconfigure driver on crash recovery\n"); + return; + } + + if (ab->is_reset) + complete_all(&ab->reconfigure_complete); + + if (!ab->is_reset) + ath12k_core_post_reconfigure_recovery(ab); +} + +static void ath12k_core_reset(struct work_struct *work) +{ + struct ath12k_base *ab = container_of(work, struct ath12k_base, reset_work); + int reset_count, fail_cont_count; + long time_left; + + if (!(test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags))) { + ath12k_warn(ab, "ignore reset dev flags 0x%lx\n", ab->dev_flags); + return; + } + + /* Sometimes the recovery will fail and then the next all recovery fail, + * this is to avoid infinite recovery since it can not recovery success + */ + fail_cont_count = atomic_read(&ab->fail_cont_count); + + if (fail_cont_count >= ATH12K_RESET_MAX_FAIL_COUNT_FINAL) + return; + + if (fail_cont_count >= ATH12K_RESET_MAX_FAIL_COUNT_FIRST && + time_before(jiffies, ab->reset_fail_timeout)) + return; + + reset_count = atomic_inc_return(&ab->reset_count); + + if (reset_count > 1) { + /* Sometimes it happened another reset worker before the previous one + * completed, then the second reset worker will destroy the previous one, + * thus below is to avoid that. + */ + ath12k_warn(ab, "already resetting count %d\n", reset_count); + + reinit_completion(&ab->reset_complete); + time_left = wait_for_completion_timeout(&ab->reset_complete, + ATH12K_RESET_TIMEOUT_HZ); + if (time_left) { + ath12k_dbg(ab, ATH12K_DBG_BOOT, "to skip reset\n"); + atomic_dec(&ab->reset_count); + return; + } + + ab->reset_fail_timeout = jiffies + ATH12K_RESET_FAIL_TIMEOUT_HZ; + /* Record the continuous recovery fail count when recovery failed*/ + fail_cont_count = atomic_inc_return(&ab->fail_cont_count); + } + + ath12k_dbg(ab, ATH12K_DBG_BOOT, "reset starting\n"); + + ab->is_reset = true; + atomic_set(&ab->recovery_count, 0); + + ath12k_core_pre_reconfigure_recovery(ab); + + reinit_completion(&ab->reconfigure_complete); + ath12k_core_post_reconfigure_recovery(ab); + + reinit_completion(&ab->recovery_start); + atomic_set(&ab->recovery_start_count, 0); + + ath12k_dbg(ab, ATH12K_DBG_BOOT, "waiting recovery start...\n"); + + time_left = wait_for_completion_timeout(&ab->recovery_start, + ATH12K_RECOVER_START_TIMEOUT_HZ); + + ath12k_hif_power_down(ab); + ath12k_hif_power_up(ab); + + ath12k_dbg(ab, ATH12K_DBG_BOOT, "reset started\n"); +} + +int ath12k_core_pre_init(struct ath12k_base *ab) +{ + int ret; + + ret = ath12k_hw_init(ab); + if (ret) { + ath12k_err(ab, "failed to init hw params: %d\n", ret); + return ret; + } + + return 0; +} + +int ath12k_core_init(struct ath12k_base *ab) +{ + int ret; + + ret = ath12k_core_soc_create(ab); + if (ret) { + ath12k_err(ab, "failed to create soc core: %d\n", ret); + return ret; + } + + return 0; +} + +void ath12k_core_deinit(struct ath12k_base *ab) +{ + mutex_lock(&ab->core_lock); + + ath12k_core_pdev_destroy(ab); + ath12k_core_stop(ab); + + mutex_unlock(&ab->core_lock); + + ath12k_hif_power_down(ab); + ath12k_mac_destroy(ab); + ath12k_core_soc_destroy(ab); +} + +void ath12k_core_free(struct ath12k_base *ab) +{ + kfree(ab); +} + +struct ath12k_base *ath12k_core_alloc(struct device *dev, size_t priv_size, + enum ath12k_bus bus) +{ + struct ath12k_base *ab; + + ab = kzalloc(sizeof(*ab) + priv_size, GFP_KERNEL); + if (!ab) + return NULL; + + init_completion(&ab->driver_recovery); + + ab->workqueue = create_singlethread_workqueue("ath12k_wq"); + if (!ab->workqueue) + goto err_sc_free; + + ab->workqueue_aux = create_singlethread_workqueue("ath12k_aux_wq"); + if (!ab->workqueue_aux) + goto err_free_wq; + + mutex_init(&ab->core_lock); + spin_lock_init(&ab->base_lock); + init_completion(&ab->reset_complete); + init_completion(&ab->reconfigure_complete); + init_completion(&ab->recovery_start); + + INIT_LIST_HEAD(&ab->peers); + init_waitqueue_head(&ab->peer_mapping_wq); + init_waitqueue_head(&ab->wmi_ab.tx_credits_wq); + INIT_WORK(&ab->restart_work, ath12k_core_restart); + INIT_WORK(&ab->reset_work, ath12k_core_reset); + timer_setup(&ab->rx_replenish_retry, ath12k_ce_rx_replenish_retry, 0); + init_completion(&ab->htc_suspend); + + ab->dev = dev; + ab->hif.bus = bus; + + return ab; + +err_free_wq: + destroy_workqueue(ab->workqueue); +err_sc_free: + kfree(ab); + return NULL; +} + +MODULE_DESCRIPTION("Core module for Qualcomm Atheros 802.11be wireless LAN cards."); +MODULE_LICENSE("Dual BSD/GPL");