[PATCH 05/50] wifi: ath12k: add core.c

Kalle Valo
2022-08-12T16:09:18Z

From: Kalle Valo <quic_kvalo@quicinc.com>

(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 <quic_kvalo@quicinc.com>
---
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 <linux/module.h>
+#include <linux/slab.h>
+#include <linux/remoteproc.h>
+#include <linux/firmware.h>
+#include <linux/of.h>
+#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");