/* * Copyright (c) 2005-2011 Atheros Communications Inc. * Copyright (c) 2011-2013 Qualcomm Atheros, Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include "core.h" #include "mac.h" #include "htc.h" #include "hif.h" #include "wmi.h" #include "bmi.h" #include "debug.h" #include "htt.h" #include "testmode.h" #include "wmi-ops.h" unsigned int ath10k_debug_mask; static bool uart_print; static bool skip_otp; module_param_named(debug_mask, ath10k_debug_mask, uint, 0644); module_param(uart_print, bool, 0644); module_param(skip_otp, bool, 0644); MODULE_PARM_DESC(debug_mask, "Debugging mask"); MODULE_PARM_DESC(uart_print, "Uart target debugging"); MODULE_PARM_DESC(skip_otp, "Skip otp failure for calibration in testmode"); static const struct ath10k_hw_params ath10k_hw_params_list[] = { { .id = QCA988X_HW_2_0_VERSION, .name = "qca988x hw2.0", .patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR, .uart_pin = 7, .fw = { .dir = QCA988X_HW_2_0_FW_DIR, .fw = QCA988X_HW_2_0_FW_FILE, .otp = QCA988X_HW_2_0_OTP_FILE, .board = QCA988X_HW_2_0_BOARD_DATA_FILE, .board_size = QCA988X_BOARD_DATA_SZ, .board_ext_size = QCA988X_BOARD_EXT_DATA_SZ, }, }, { .id = QCA6174_HW_2_1_VERSION, .name = "qca6174 hw2.1", .patch_load_addr = QCA6174_HW_2_1_PATCH_LOAD_ADDR, .uart_pin = 6, .fw = { .dir = QCA6174_HW_2_1_FW_DIR, .fw = QCA6174_HW_2_1_FW_FILE, .otp = QCA6174_HW_2_1_OTP_FILE, .board = QCA6174_HW_2_1_BOARD_DATA_FILE, .board_size = QCA6174_BOARD_DATA_SZ, .board_ext_size = QCA6174_BOARD_EXT_DATA_SZ, }, }, { .id = QCA6174_HW_3_0_VERSION, .name = "qca6174 hw3.0", .patch_load_addr = QCA6174_HW_3_0_PATCH_LOAD_ADDR, .uart_pin = 6, .fw = { .dir = QCA6174_HW_3_0_FW_DIR, .fw = QCA6174_HW_3_0_FW_FILE, .otp = QCA6174_HW_3_0_OTP_FILE, .board = QCA6174_HW_3_0_BOARD_DATA_FILE, .board_size = QCA6174_BOARD_DATA_SZ, .board_ext_size = QCA6174_BOARD_EXT_DATA_SZ, }, }, }; static void ath10k_send_suspend_complete(struct ath10k *ar) { ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot suspend complete\n"); complete(&ar->target_suspend); } static int ath10k_init_configure_target(struct ath10k *ar) { u32 param_host; int ret; /* tell target which HTC version it is used*/ ret = ath10k_bmi_write32(ar, hi_app_host_interest, HTC_PROTOCOL_VERSION); if (ret) { ath10k_err(ar, "settings HTC version failed\n"); return ret; } /* set the firmware mode to STA/IBSS/AP */ ret = ath10k_bmi_read32(ar, hi_option_flag, ¶m_host); if (ret) { ath10k_err(ar, "setting firmware mode (1/2) failed\n"); return ret; } /* TODO following parameters need to be re-visited. */ /* num_device */ param_host |= (1 << HI_OPTION_NUM_DEV_SHIFT); /* Firmware mode */ /* FIXME: Why FW_MODE_AP ??.*/ param_host |= (HI_OPTION_FW_MODE_AP << HI_OPTION_FW_MODE_SHIFT); /* mac_addr_method */ param_host |= (1 << HI_OPTION_MAC_ADDR_METHOD_SHIFT); /* firmware_bridge */ param_host |= (0 << HI_OPTION_FW_BRIDGE_SHIFT); /* fwsubmode */ param_host |= (0 << HI_OPTION_FW_SUBMODE_SHIFT); ret = ath10k_bmi_write32(ar, hi_option_flag, param_host); if (ret) { ath10k_err(ar, "setting firmware mode (2/2) failed\n"); return ret; } /* We do all byte-swapping on the host */ ret = ath10k_bmi_write32(ar, hi_be, 0); if (ret) { ath10k_err(ar, "setting host CPU BE mode failed\n"); return ret; } /* FW descriptor/Data swap flags */ ret = ath10k_bmi_write32(ar, hi_fw_swap, 0); if (ret) { ath10k_err(ar, "setting FW data/desc swap flags failed\n"); return ret; } return 0; } static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar, 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 = request_firmware(&fw, filename, ar->dev); if (ret) return ERR_PTR(ret); return fw; } static int ath10k_push_board_ext_data(struct ath10k *ar, const void *data, size_t data_len) { u32 board_data_size = ar->hw_params.fw.board_size; u32 board_ext_data_size = ar->hw_params.fw.board_ext_size; u32 board_ext_data_addr; int ret; ret = ath10k_bmi_read32(ar, hi_board_ext_data, &board_ext_data_addr); if (ret) { ath10k_err(ar, "could not read board ext data addr (%d)\n", ret); return ret; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot push board extended data addr 0x%x\n", board_ext_data_addr); if (board_ext_data_addr == 0) return 0; if (data_len != (board_data_size + board_ext_data_size)) { ath10k_err(ar, "invalid board (ext) data sizes %zu != %d+%d\n", data_len, board_data_size, board_ext_data_size); return -EINVAL; } ret = ath10k_bmi_write_memory(ar, board_ext_data_addr, data + board_data_size, board_ext_data_size); if (ret) { ath10k_err(ar, "could not write board ext data (%d)\n", ret); return ret; } ret = ath10k_bmi_write32(ar, hi_board_ext_data_config, (board_ext_data_size << 16) | 1); if (ret) { ath10k_err(ar, "could not write board ext data bit (%d)\n", ret); return ret; } return 0; } static int ath10k_download_board_data(struct ath10k *ar, const void *data, size_t data_len) { u32 board_data_size = ar->hw_params.fw.board_size; u32 address; int ret; ret = ath10k_push_board_ext_data(ar, data, data_len); if (ret) { ath10k_err(ar, "could not push board ext data (%d)\n", ret); goto exit; } ret = ath10k_bmi_read32(ar, hi_board_data, &address); if (ret) { ath10k_err(ar, "could not read board data addr (%d)\n", ret); goto exit; } ret = ath10k_bmi_write_memory(ar, address, data, min_t(u32, board_data_size, data_len)); if (ret) { ath10k_err(ar, "could not write board data (%d)\n", ret); goto exit; } ret = ath10k_bmi_write32(ar, hi_board_data_initialized, 1); if (ret) { ath10k_err(ar, "could not write board data bit (%d)\n", ret); goto exit; } exit: return ret; } static int ath10k_download_cal_file(struct ath10k *ar) { int ret; if (!ar->cal_file) return -ENOENT; if (IS_ERR(ar->cal_file)) return PTR_ERR(ar->cal_file); ret = ath10k_download_board_data(ar, ar->cal_file->data, ar->cal_file->size); if (ret) { ath10k_err(ar, "failed to download cal_file data: %d\n", ret); return ret; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cal file downloaded\n"); return 0; } static int ath10k_download_cal_dt(struct ath10k *ar) { struct device_node *node; int data_len; void *data; int ret; node = ar->dev->of_node; if (!node) /* Device Tree is optional, don't print any warnings if * there's no node for ath10k. */ return -ENOENT; if (!of_get_property(node, "qcom,ath10k-calibration-data", &data_len)) { /* The calibration data node is optional */ return -ENOENT; } if (data_len != QCA988X_CAL_DATA_LEN) { ath10k_warn(ar, "invalid calibration data length in DT: %d\n", data_len); ret = -EMSGSIZE; goto out; } data = kmalloc(data_len, GFP_KERNEL); if (!data) { ret = -ENOMEM; goto out; } ret = of_property_read_u8_array(node, "qcom,ath10k-calibration-data", data, data_len); if (ret) { ath10k_warn(ar, "failed to read calibration data from DT: %d\n", ret); goto out_free; } ret = ath10k_download_board_data(ar, data, data_len); if (ret) { ath10k_warn(ar, "failed to download calibration data from Device Tree: %d\n", ret); goto out_free; } ret = 0; out_free: kfree(data); out: return ret; } static int ath10k_download_and_run_otp(struct ath10k *ar) { u32 result, address = ar->hw_params.patch_load_addr; int ret; ret = ath10k_download_board_data(ar, ar->board_data, ar->board_len); if (ret) { ath10k_err(ar, "failed to download board data: %d\n", ret); return ret; } /* OTP is optional */ if (!ar->otp_data || !ar->otp_len) { ath10k_warn(ar, "Not running otp, calibration will be incorrect (otp-data %p otp_len %zd)!\n", ar->otp_data, ar->otp_len); return 0; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot upload otp to 0x%x len %zd\n", address, ar->otp_len); ret = ath10k_bmi_fast_download(ar, address, ar->otp_data, ar->otp_len); if (ret) { ath10k_err(ar, "could not write otp (%d)\n", ret); return ret; } ret = ath10k_bmi_execute(ar, address, 0, &result); if (ret) { ath10k_err(ar, "could not execute otp (%d)\n", ret); return ret; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot otp execute result %d\n", result); if (!skip_otp && result != 0) { ath10k_err(ar, "otp calibration failed: %d", result); return -EINVAL; } return 0; } static int ath10k_download_fw(struct ath10k *ar, enum ath10k_firmware_mode mode) { u32 address, data_len; const char *mode_name; const void *data; int ret; address = ar->hw_params.patch_load_addr; switch (mode) { case ATH10K_FIRMWARE_MODE_NORMAL: data = ar->firmware_data; data_len = ar->firmware_len; mode_name = "normal"; break; case ATH10K_FIRMWARE_MODE_UTF: data = ar->testmode.utf->data; data_len = ar->testmode.utf->size; mode_name = "utf"; break; default: ath10k_err(ar, "unknown firmware mode: %d\n", mode); return -EINVAL; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot uploading firmware image %p len %d mode %s\n", data, data_len, mode_name); ret = ath10k_bmi_fast_download(ar, address, data, data_len); if (ret) { ath10k_err(ar, "failed to download %s firmware: %d\n", mode_name, ret); return ret; } return ret; } static void ath10k_core_free_firmware_files(struct ath10k *ar) { if (ar->board && !IS_ERR(ar->board)) release_firmware(ar->board); if (ar->otp && !IS_ERR(ar->otp)) release_firmware(ar->otp); if (ar->firmware && !IS_ERR(ar->firmware)) release_firmware(ar->firmware); if (ar->cal_file && !IS_ERR(ar->cal_file)) release_firmware(ar->cal_file); ar->board = NULL; ar->board_data = NULL; ar->board_len = 0; ar->otp = NULL; ar->otp_data = NULL; ar->otp_len = 0; ar->firmware = NULL; ar->firmware_data = NULL; ar->firmware_len = 0; ar->cal_file = NULL; } static int ath10k_fetch_cal_file(struct ath10k *ar) { char filename[100]; /* cal--.bin */ scnprintf(filename, sizeof(filename), "cal-%s-%s.bin", ath10k_bus_str(ar->hif.bus), dev_name(ar->dev)); ar->cal_file = ath10k_fetch_fw_file(ar, ATH10K_FW_DIR, filename); if (IS_ERR(ar->cal_file)) /* calibration file is optional, don't print any warnings */ return PTR_ERR(ar->cal_file); ath10k_dbg(ar, ATH10K_DBG_BOOT, "found calibration file %s/%s\n", ATH10K_FW_DIR, filename); return 0; } static int ath10k_core_fetch_firmware_api_1(struct ath10k *ar) { int ret = 0; if (ar->hw_params.fw.fw == NULL) { ath10k_err(ar, "firmware file not defined\n"); return -EINVAL; } if (ar->hw_params.fw.board == NULL) { ath10k_err(ar, "board data file not defined"); return -EINVAL; } ar->board = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, ar->hw_params.fw.board); if (IS_ERR(ar->board)) { ret = PTR_ERR(ar->board); ath10k_err(ar, "could not fetch board data (%d)\n", ret); goto err; } ar->board_data = ar->board->data; ar->board_len = ar->board->size; ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, ar->hw_params.fw.fw); if (IS_ERR(ar->firmware)) { ret = PTR_ERR(ar->firmware); ath10k_err(ar, "could not fetch firmware (%d)\n", ret); goto err; } ar->firmware_data = ar->firmware->data; ar->firmware_len = ar->firmware->size; /* OTP may be undefined. If so, don't fetch it at all */ if (ar->hw_params.fw.otp == NULL) return 0; ar->otp = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, ar->hw_params.fw.otp); if (IS_ERR(ar->otp)) { ret = PTR_ERR(ar->otp); ath10k_err(ar, "could not fetch otp (%d)\n", ret); goto err; } ar->otp_data = ar->otp->data; ar->otp_len = ar->otp->size; return 0; err: ath10k_core_free_firmware_files(ar); return ret; } static int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name) { size_t magic_len, len, ie_len; int ie_id, i, index, bit, ret; struct ath10k_fw_ie *hdr; const u8 *data; __le32 *timestamp, *version; /* first fetch the firmware file (firmware-*.bin) */ ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, name); if (IS_ERR(ar->firmware)) { ath10k_err(ar, "could not fetch firmware file '%s/%s': %ld\n", ar->hw_params.fw.dir, name, PTR_ERR(ar->firmware)); return PTR_ERR(ar->firmware); } data = ar->firmware->data; len = ar->firmware->size; /* magic also includes the null byte, check that as well */ magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1; if (len < magic_len) { ath10k_err(ar, "firmware file '%s/%s' too small to contain magic: %zu\n", ar->hw_params.fw.dir, name, len); ret = -EINVAL; goto err; } if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) { ath10k_err(ar, "invalid firmware magic\n"); ret = -EINVAL; goto err; } /* jump over the padding */ magic_len = ALIGN(magic_len, 4); len -= magic_len; data += magic_len; /* loop elements */ while (len > sizeof(struct ath10k_fw_ie)) { hdr = (struct ath10k_fw_ie *)data; ie_id = le32_to_cpu(hdr->id); ie_len = le32_to_cpu(hdr->len); len -= sizeof(*hdr); data += sizeof(*hdr); if (len < ie_len) { ath10k_err(ar, "invalid length for FW IE %d (%zu < %zu)\n", ie_id, len, ie_len); ret = -EINVAL; goto err; } switch (ie_id) { case ATH10K_FW_IE_FW_VERSION: if (ie_len > sizeof(ar->hw->wiphy->fw_version) - 1) break; memcpy(ar->hw->wiphy->fw_version, data, ie_len); ar->hw->wiphy->fw_version[ie_len] = '\0'; ath10k_dbg(ar, ATH10K_DBG_BOOT, "found fw version %s\n", ar->hw->wiphy->fw_version); break; case ATH10K_FW_IE_TIMESTAMP: if (ie_len != sizeof(u32)) break; timestamp = (__le32 *)data; ath10k_dbg(ar, ATH10K_DBG_BOOT, "found fw timestamp %d\n", le32_to_cpup(timestamp)); break; case ATH10K_FW_IE_FEATURES: ath10k_dbg(ar, ATH10K_DBG_BOOT, "found firmware features ie (%zd B)\n", ie_len); for (i = 0; i < ATH10K_FW_FEATURE_COUNT; i++) { index = i / 8; bit = i % 8; if (index == ie_len) break; if (data[index] & (1 << bit)) { ath10k_dbg(ar, ATH10K_DBG_BOOT, "Enabling feature bit: %i\n", i); __set_bit(i, ar->fw_features); } } ath10k_dbg_dump(ar, ATH10K_DBG_BOOT, "features", "", ar->fw_features, sizeof(ar->fw_features)); break; case ATH10K_FW_IE_FW_IMAGE: ath10k_dbg(ar, ATH10K_DBG_BOOT, "found fw image ie (%zd B)\n", ie_len); ar->firmware_data = data; ar->firmware_len = ie_len; break; case ATH10K_FW_IE_OTP_IMAGE: ath10k_dbg(ar, ATH10K_DBG_BOOT, "found otp image ie (%zd B)\n", ie_len); ar->otp_data = data; ar->otp_len = ie_len; break; case ATH10K_FW_IE_WMI_OP_VERSION: if (ie_len != sizeof(u32)) break; version = (__le32 *)data; ar->wmi.op_version = le32_to_cpup(version); ath10k_dbg(ar, ATH10K_DBG_BOOT, "found fw ie wmi op version %d\n", ar->wmi.op_version); break; default: ath10k_warn(ar, "Unknown FW IE: %u\n", le32_to_cpu(hdr->id)); break; } /* jump over the padding */ ie_len = ALIGN(ie_len, 4); len -= ie_len; data += ie_len; } if (!ar->firmware_data || !ar->firmware_len) { ath10k_warn(ar, "No ATH10K_FW_IE_FW_IMAGE found from '%s/%s', skipping\n", ar->hw_params.fw.dir, name); ret = -ENOMEDIUM; goto err; } /* now fetch the board file */ if (ar->hw_params.fw.board == NULL) { ath10k_err(ar, "board data file not defined"); ret = -EINVAL; goto err; } ar->board = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, ar->hw_params.fw.board); if (IS_ERR(ar->board)) { ret = PTR_ERR(ar->board); ath10k_err(ar, "could not fetch board data '%s/%s' (%d)\n", ar->hw_params.fw.dir, ar->hw_params.fw.board, ret); goto err; } ar->board_data = ar->board->data; ar->board_len = ar->board->size; return 0; err: ath10k_core_free_firmware_files(ar); return ret; } static int ath10k_core_fetch_firmware_files(struct ath10k *ar) { int ret; /* calibration file is optional, don't check for any errors */ ath10k_fetch_cal_file(ar); ar->fw_api = 4; ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api); ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API4_FILE); if (ret == 0) goto success; ar->fw_api = 3; ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api); ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API3_FILE); if (ret == 0) goto success; ar->fw_api = 2; ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api); ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API2_FILE); if (ret == 0) goto success; ar->fw_api = 1; ath10k_dbg(ar, ATH10K_DBG_BOOT, "trying fw api %d\n", ar->fw_api); ret = ath10k_core_fetch_firmware_api_1(ar); if (ret) return ret; success: ath10k_dbg(ar, ATH10K_DBG_BOOT, "using fw api %d\n", ar->fw_api); return 0; } static int ath10k_download_cal_data(struct ath10k *ar) { int ret; ret = ath10k_download_cal_file(ar); if (ret == 0) { ar->cal_mode = ATH10K_CAL_MODE_FILE; goto done; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot did not find a calibration file, try DT next: %d\n", ret); ret = ath10k_download_cal_dt(ar); if (ret == 0) { ar->cal_mode = ATH10K_CAL_MODE_DT; goto done; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot did not find DT entry, try OTP next: %d\n", ret); ret = ath10k_download_and_run_otp(ar); if (ret) { ath10k_err(ar, "failed to run otp: %d\n", ret); return ret; } ar->cal_mode = ATH10K_CAL_MODE_OTP; done: ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot using calibration mode %s\n", ath10k_cal_mode_str(ar->cal_mode)); return 0; } static int ath10k_init_uart(struct ath10k *ar) { int ret; /* * Explicitly setting UART prints to zero as target turns it on * based on scratch registers. */ ret = ath10k_bmi_write32(ar, hi_serial_enable, 0); if (ret) { ath10k_warn(ar, "could not disable UART prints (%d)\n", ret); return ret; } if (!uart_print) return 0; ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, ar->hw_params.uart_pin); if (ret) { ath10k_warn(ar, "could not enable UART prints (%d)\n", ret); return ret; } ret = ath10k_bmi_write32(ar, hi_serial_enable, 1); if (ret) { ath10k_warn(ar, "could not enable UART prints (%d)\n", ret); return ret; } /* Set the UART baud rate to 19200. */ ret = ath10k_bmi_write32(ar, hi_desired_baud_rate, 19200); if (ret) { ath10k_warn(ar, "could not set the baud rate (%d)\n", ret); return ret; } ath10k_info(ar, "UART prints enabled\n"); return 0; } static int ath10k_init_hw_params(struct ath10k *ar) { const struct ath10k_hw_params *uninitialized_var(hw_params); int i; for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) { hw_params = &ath10k_hw_params_list[i]; if (hw_params->id == ar->target_version) break; } if (i == ARRAY_SIZE(ath10k_hw_params_list)) { ath10k_err(ar, "Unsupported hardware version: 0x%x\n", ar->target_version); return -EINVAL; } ar->hw_params = *hw_params; ath10k_dbg(ar, ATH10K_DBG_BOOT, "Hardware name %s version 0x%x\n", ar->hw_params.name, ar->target_version); return 0; } static void ath10k_core_restart(struct work_struct *work) { struct ath10k *ar = container_of(work, struct ath10k, restart_work); set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags); /* Place a barrier to make sure the compiler doesn't reorder * CRASH_FLUSH and calling other functions. */ barrier(); ieee80211_stop_queues(ar->hw); ath10k_drain_tx(ar); complete_all(&ar->scan.started); complete_all(&ar->scan.completed); complete_all(&ar->scan.on_channel); complete_all(&ar->offchan_tx_completed); complete_all(&ar->install_key_done); complete_all(&ar->vdev_setup_done); complete_all(&ar->thermal.wmi_sync); wake_up(&ar->htt.empty_tx_wq); wake_up(&ar->wmi.tx_credits_wq); wake_up(&ar->peer_mapping_wq); mutex_lock(&ar->conf_mutex); switch (ar->state) { case ATH10K_STATE_ON: ar->state = ATH10K_STATE_RESTARTING; ath10k_hif_stop(ar); ath10k_scan_finish(ar); ieee80211_restart_hw(ar->hw); break; case ATH10K_STATE_OFF: /* this can happen if driver is being unloaded * or if the crash happens during FW probing */ ath10k_warn(ar, "cannot restart a device that hasn't been started\n"); break; case ATH10K_STATE_RESTARTING: /* hw restart might be requested from multiple places */ break; case ATH10K_STATE_RESTARTED: ar->state = ATH10K_STATE_WEDGED; /* fall through */ case ATH10K_STATE_WEDGED: ath10k_warn(ar, "device is wedged, will not restart\n"); break; case ATH10K_STATE_UTF: ath10k_warn(ar, "firmware restart in UTF mode not supported\n"); break; } mutex_unlock(&ar->conf_mutex); } static int ath10k_core_init_firmware_features(struct ath10k *ar) { if (test_bit(ATH10K_FW_FEATURE_WMI_10_2, ar->fw_features) && !test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) { ath10k_err(ar, "feature bits corrupted: 10.2 feature requires 10.x feature to be set as well"); return -EINVAL; } if (ar->wmi.op_version >= ATH10K_FW_WMI_OP_VERSION_MAX) { ath10k_err(ar, "unsupported WMI OP version (max %d): %d\n", ATH10K_FW_WMI_OP_VERSION_MAX, ar->wmi.op_version); return -EINVAL; } /* Backwards compatibility for firmwares without * ATH10K_FW_IE_WMI_OP_VERSION. */ if (ar->wmi.op_version == ATH10K_FW_WMI_OP_VERSION_UNSET) { if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) { if (test_bit(ATH10K_FW_FEATURE_WMI_10_2, ar->fw_features)) ar->wmi.op_version = ATH10K_FW_WMI_OP_VERSION_10_2; else ar->wmi.op_version = ATH10K_FW_WMI_OP_VERSION_10_1; } else { ar->wmi.op_version = ATH10K_FW_WMI_OP_VERSION_MAIN; } } switch (ar->wmi.op_version) { case ATH10K_FW_WMI_OP_VERSION_MAIN: ar->max_num_peers = TARGET_NUM_PEERS; ar->max_num_stations = TARGET_NUM_STATIONS; ar->max_num_vdevs = TARGET_NUM_VDEVS; ar->htt.max_num_pending_tx = TARGET_NUM_MSDU_DESC; break; case ATH10K_FW_WMI_OP_VERSION_10_1: case ATH10K_FW_WMI_OP_VERSION_10_2: case ATH10K_FW_WMI_OP_VERSION_10_2_4: ar->max_num_peers = TARGET_10X_NUM_PEERS; ar->max_num_stations = TARGET_10X_NUM_STATIONS; ar->max_num_vdevs = TARGET_10X_NUM_VDEVS; ar->htt.max_num_pending_tx = TARGET_10X_NUM_MSDU_DESC; break; case ATH10K_FW_WMI_OP_VERSION_TLV: ar->max_num_peers = TARGET_TLV_NUM_PEERS; ar->max_num_stations = TARGET_TLV_NUM_STATIONS; ar->max_num_vdevs = TARGET_TLV_NUM_VDEVS; ar->htt.max_num_pending_tx = TARGET_TLV_NUM_MSDU_DESC; break; case ATH10K_FW_WMI_OP_VERSION_UNSET: case ATH10K_FW_WMI_OP_VERSION_MAX: WARN_ON(1); return -EINVAL; } return 0; } int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode) { int status; lockdep_assert_held(&ar->conf_mutex); clear_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags); ath10k_bmi_start(ar); if (ath10k_init_configure_target(ar)) { status = -EINVAL; goto err; } status = ath10k_download_cal_data(ar); if (status) goto err; status = ath10k_download_fw(ar, mode); if (status) goto err; status = ath10k_init_uart(ar); if (status) goto err; ar->htc.htc_ops.target_send_suspend_complete = ath10k_send_suspend_complete; status = ath10k_htc_init(ar); if (status) { ath10k_err(ar, "could not init HTC (%d)\n", status); goto err; } status = ath10k_bmi_done(ar); if (status) goto err; status = ath10k_wmi_attach(ar); if (status) { ath10k_err(ar, "WMI attach failed: %d\n", status); goto err; } status = ath10k_htt_init(ar); if (status) { ath10k_err(ar, "failed to init htt: %d\n", status); goto err_wmi_detach; } status = ath10k_htt_tx_alloc(&ar->htt); if (status) { ath10k_err(ar, "failed to alloc htt tx: %d\n", status); goto err_wmi_detach; } status = ath10k_htt_rx_alloc(&ar->htt); if (status) { ath10k_err(ar, "failed to alloc htt rx: %d\n", status); goto err_htt_tx_detach; } status = ath10k_hif_start(ar); if (status) { ath10k_err(ar, "could not start HIF: %d\n", status); goto err_htt_rx_detach; } status = ath10k_htc_wait_target(&ar->htc); if (status) { ath10k_err(ar, "failed to connect to HTC: %d\n", status); goto err_hif_stop; } if (mode == ATH10K_FIRMWARE_MODE_NORMAL) { status = ath10k_htt_connect(&ar->htt); if (status) { ath10k_err(ar, "failed to connect htt (%d)\n", status); goto err_hif_stop; } } status = ath10k_wmi_connect(ar); if (status) { ath10k_err(ar, "could not connect wmi: %d\n", status); goto err_hif_stop; } status = ath10k_htc_start(&ar->htc); if (status) { ath10k_err(ar, "failed to start htc: %d\n", status); goto err_hif_stop; } if (mode == ATH10K_FIRMWARE_MODE_NORMAL) { status = ath10k_wmi_wait_for_service_ready(ar); if (status <= 0) { ath10k_warn(ar, "wmi service ready event not received"); status = -ETIMEDOUT; goto err_hif_stop; } } ath10k_dbg(ar, ATH10K_DBG_BOOT, "firmware %s booted\n", ar->hw->wiphy->fw_version); status = ath10k_wmi_cmd_init(ar); if (status) { ath10k_err(ar, "could not send WMI init command (%d)\n", status); goto err_hif_stop; } status = ath10k_wmi_wait_for_unified_ready(ar); if (status <= 0) { ath10k_err(ar, "wmi unified ready event not received\n"); status = -ETIMEDOUT; goto err_hif_stop; } /* If firmware indicates Full Rx Reorder support it must be used in a * slightly different manner. Let HTT code know. */ ar->htt.rx_ring.in_ord_rx = !!(test_bit(WMI_SERVICE_RX_FULL_REORDER, ar->wmi.svc_map)); status = ath10k_htt_rx_ring_refill(ar); if (status) { ath10k_err(ar, "failed to refill htt rx ring: %d\n", status); goto err_hif_stop; } /* we don't care about HTT in UTF mode */ if (mode == ATH10K_FIRMWARE_MODE_NORMAL) { status = ath10k_htt_setup(&ar->htt); if (status) { ath10k_err(ar, "failed to setup htt: %d\n", status); goto err_hif_stop; } } status = ath10k_debug_start(ar); if (status) goto err_hif_stop; ar->free_vdev_map = (1LL << ar->max_num_vdevs) - 1; INIT_LIST_HEAD(&ar->arvifs); return 0; err_hif_stop: ath10k_hif_stop(ar); err_htt_rx_detach: ath10k_htt_rx_free(&ar->htt); err_htt_tx_detach: ath10k_htt_tx_free(&ar->htt); err_wmi_detach: ath10k_wmi_detach(ar); err: return status; } EXPORT_SYMBOL(ath10k_core_start); int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt) { int ret; reinit_completion(&ar->target_suspend); ret = ath10k_wmi_pdev_suspend_target(ar, suspend_opt); if (ret) { ath10k_warn(ar, "could not suspend target (%d)\n", ret); return ret; } ret = wait_for_completion_timeout(&ar->target_suspend, 1 * HZ); if (ret == 0) { ath10k_warn(ar, "suspend timed out - target pause event never came\n"); return -ETIMEDOUT; } return 0; } void ath10k_core_stop(struct ath10k *ar) { lockdep_assert_held(&ar->conf_mutex); /* try to suspend target */ if (ar->state != ATH10K_STATE_RESTARTING && ar->state != ATH10K_STATE_UTF) ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR); ath10k_debug_stop(ar); ath10k_hif_stop(ar); ath10k_htt_tx_free(&ar->htt); ath10k_htt_rx_free(&ar->htt); ath10k_wmi_detach(ar); } EXPORT_SYMBOL(ath10k_core_stop); /* mac80211 manages fw/hw initialization through start/stop hooks. However in * order to know what hw capabilities should be advertised to mac80211 it is * necessary to load the firmware (and tear it down immediately since start * hook will try to init it again) before registering */ static int ath10k_core_probe_fw(struct ath10k *ar) { struct bmi_target_info target_info; int ret = 0; ret = ath10k_hif_power_up(ar); if (ret) { ath10k_err(ar, "could not start pci hif (%d)\n", ret); return ret; } memset(&target_info, 0, sizeof(target_info)); ret = ath10k_bmi_get_target_info(ar, &target_info); if (ret) { ath10k_err(ar, "could not get target info (%d)\n", ret); goto err_power_down; } ar->target_version = target_info.version; ar->hw->wiphy->hw_version = target_info.version; ret = ath10k_init_hw_params(ar); if (ret) { ath10k_err(ar, "could not get hw params (%d)\n", ret); goto err_power_down; } ret = ath10k_core_fetch_firmware_files(ar); if (ret) { ath10k_err(ar, "could not fetch firmware files (%d)\n", ret); goto err_power_down; } ret = ath10k_core_init_firmware_features(ar); if (ret) { ath10k_err(ar, "fatal problem with firmware features: %d\n", ret); goto err_free_firmware_files; } mutex_lock(&ar->conf_mutex); ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL); if (ret) { ath10k_err(ar, "could not init core (%d)\n", ret); goto err_unlock; } ath10k_print_driver_info(ar); ath10k_core_stop(ar); mutex_unlock(&ar->conf_mutex); ath10k_hif_power_down(ar); return 0; err_unlock: mutex_unlock(&ar->conf_mutex); err_free_firmware_files: ath10k_core_free_firmware_files(ar); err_power_down: ath10k_hif_power_down(ar); return ret; } static void ath10k_core_register_work(struct work_struct *work) { struct ath10k *ar = container_of(work, struct ath10k, register_work); int status; status = ath10k_core_probe_fw(ar); if (status) { ath10k_err(ar, "could not probe fw (%d)\n", status); goto err; } status = ath10k_mac_register(ar); if (status) { ath10k_err(ar, "could not register to mac80211 (%d)\n", status); goto err_release_fw; } status = ath10k_debug_register(ar); if (status) { ath10k_err(ar, "unable to initialize debugfs\n"); goto err_unregister_mac; } status = ath10k_spectral_create(ar); if (status) { ath10k_err(ar, "failed to initialize spectral\n"); goto err_debug_destroy; } status = ath10k_thermal_register(ar); if (status) { ath10k_err(ar, "could not register thermal device: %d\n", status); goto err_spectral_destroy; } set_bit(ATH10K_FLAG_CORE_REGISTERED, &ar->dev_flags); return; err_spectral_destroy: ath10k_spectral_destroy(ar); err_debug_destroy: ath10k_debug_destroy(ar); err_unregister_mac: ath10k_mac_unregister(ar); err_release_fw: ath10k_core_free_firmware_files(ar); err: /* TODO: It's probably a good idea to release device from the driver * but calling device_release_driver() here will cause a deadlock. */ return; } int ath10k_core_register(struct ath10k *ar, u32 chip_id) { ar->chip_id = chip_id; queue_work(ar->workqueue, &ar->register_work); return 0; } EXPORT_SYMBOL(ath10k_core_register); void ath10k_core_unregister(struct ath10k *ar) { cancel_work_sync(&ar->register_work); if (!test_bit(ATH10K_FLAG_CORE_REGISTERED, &ar->dev_flags)) return; ath10k_thermal_unregister(ar); /* Stop spectral before unregistering from mac80211 to remove the * relayfs debugfs file cleanly. Otherwise the parent debugfs tree * would be already be free'd recursively, leading to a double free. */ ath10k_spectral_destroy(ar); /* We must unregister from mac80211 before we stop HTC and HIF. * Otherwise we will fail to submit commands to FW and mac80211 will be * unhappy about callback failures. */ ath10k_mac_unregister(ar); ath10k_testmode_destroy(ar); ath10k_core_free_firmware_files(ar); ath10k_debug_unregister(ar); } EXPORT_SYMBOL(ath10k_core_unregister); struct ath10k *ath10k_core_create(size_t priv_size, struct device *dev, enum ath10k_bus bus, enum ath10k_hw_rev hw_rev, const struct ath10k_hif_ops *hif_ops) { struct ath10k *ar; int ret; ar = ath10k_mac_create(priv_size); if (!ar) return NULL; ar->ath_common.priv = ar; ar->ath_common.hw = ar->hw; ar->dev = dev; ar->hw_rev = hw_rev; ar->hif.ops = hif_ops; ar->hif.bus = bus; switch (hw_rev) { case ATH10K_HW_QCA988X: ar->regs = &qca988x_regs; break; case ATH10K_HW_QCA6174: ar->regs = &qca6174_regs; break; default: ath10k_err(ar, "unsupported core hardware revision %d\n", hw_rev); ret = -ENOTSUPP; goto err_free_mac; } init_completion(&ar->scan.started); init_completion(&ar->scan.completed); init_completion(&ar->scan.on_channel); init_completion(&ar->target_suspend); init_completion(&ar->install_key_done); init_completion(&ar->vdev_setup_done); init_completion(&ar->thermal.wmi_sync); INIT_DELAYED_WORK(&ar->scan.timeout, ath10k_scan_timeout_work); ar->workqueue = create_singlethread_workqueue("ath10k_wq"); if (!ar->workqueue) goto err_free_mac; mutex_init(&ar->conf_mutex); spin_lock_init(&ar->data_lock); INIT_LIST_HEAD(&ar->peers); init_waitqueue_head(&ar->peer_mapping_wq); init_waitqueue_head(&ar->htt.empty_tx_wq); init_waitqueue_head(&ar->wmi.tx_credits_wq); init_completion(&ar->offchan_tx_completed); INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work); skb_queue_head_init(&ar->offchan_tx_queue); INIT_WORK(&ar->wmi_mgmt_tx_work, ath10k_mgmt_over_wmi_tx_work); skb_queue_head_init(&ar->wmi_mgmt_tx_queue); INIT_WORK(&ar->register_work, ath10k_core_register_work); INIT_WORK(&ar->restart_work, ath10k_core_restart); ret = ath10k_debug_create(ar); if (ret) goto err_free_wq; return ar; err_free_wq: destroy_workqueue(ar->workqueue); err_free_mac: ath10k_mac_destroy(ar); return NULL; } EXPORT_SYMBOL(ath10k_core_create); void ath10k_core_destroy(struct ath10k *ar) { flush_workqueue(ar->workqueue); destroy_workqueue(ar->workqueue); ath10k_debug_destroy(ar); ath10k_mac_destroy(ar); } EXPORT_SYMBOL(ath10k_core_destroy); MODULE_AUTHOR("Qualcomm Atheros"); MODULE_DESCRIPTION("Core module for QCA988X PCIe devices."); MODULE_LICENSE("Dual BSD/GPL");