1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
6  * Copyright (c) 2010, ST-Ericsson
8  * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
9  * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
11  * Copyright (c) 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
36 #define WFX_PDS_TLV_TYPE 0x4450 // "PD" (Platform Data) in ascii little-endian
135 	.config                  = wfx_config,
171 	if (wdev->hw_caps.api_version_major < major)  in wfx_api_older_than()
173 	if (wdev->hw_caps.api_version_major > major)  in wfx_api_older_than()
175 	if (wdev->hw_caps.api_version_minor < minor)  in wfx_api_older_than()
180 /* The device needs data about the antenna configuration. This information in provided by PDS
183  *   https://github.com/SiliconLabs/wfx-firmware/blob/master/PDS/README.md
185  * The PDS file is an array of Time-Length-Value structs.
192 		dev_err(wdev->dev, "PDS: malformed file (legacy format?)\n");  in wfx_send_pds()
193 		return -EINVAL;  in wfx_send_pds()
199 			dev_err(wdev->dev, "PDS:%d: corrupted file\n", chunk_num);  in wfx_send_pds()
200 			return -EINVAL;  in wfx_send_pds()
203 			dev_info(wdev->dev, "PDS:%d: skip unknown data\n", chunk_num);  in wfx_send_pds()
207 			dev_warn(wdev->dev, "PDS:%d: unexpectedly large chunk\n", chunk_num);  in wfx_send_pds()
208 		if (buf[4] != '{' || buf[chunk_len - 1] != '}')  in wfx_send_pds()
209 			dev_warn(wdev->dev, "PDS:%d: unexpected content\n", chunk_num);  in wfx_send_pds()
211 		ret = wfx_hif_configuration(wdev, buf + 4, chunk_len - 4);  in wfx_send_pds()
213 			dev_err(wdev->dev, "PDS:%d: invalid data (unsupported options?)\n", chunk_num);  in wfx_send_pds()
214 			return -EINVAL;  in wfx_send_pds()
216 		if (ret == -ETIMEDOUT) {  in wfx_send_pds()
217 			dev_err(wdev->dev, "PDS:%d: chip didn't reply (corrupted file?)\n", chunk_num);  in wfx_send_pds()
221 			dev_err(wdev->dev, "PDS:%d: chip returned an unknown error\n", chunk_num);  in wfx_send_pds()
222 			return -EIO;  in wfx_send_pds()
226 		len -= chunk_len;  in wfx_send_pds()
238 	ret = request_firmware(&pds, wdev->pdata.file_pds, wdev->dev);  in wfx_send_pdata_pds()
240 		dev_err(wdev->dev, "can't load antenna parameters (PDS file %s). The device may be unstable.\n",  in wfx_send_pdata_pds()
241 			wdev->pdata.file_pds);  in wfx_send_pdata_pds()
244 	tmp_buf = kmemdup(pds->data, pds->size, GFP_KERNEL);  in wfx_send_pdata_pds()
246 		ret = -ENOMEM;  in wfx_send_pdata_pds()
249 	ret = wfx_send_pds(wdev, tmp_buf, pds->size);  in wfx_send_pdata_pds()
260 	mutex_destroy(&wdev->tx_power_loop_info_lock);  in wfx_free_common()
261 	mutex_destroy(&wdev->rx_stats_lock);  in wfx_free_common()
262 	mutex_destroy(&wdev->scan_lock);  in wfx_free_common()
263 	mutex_destroy(&wdev->conf_mutex);  in wfx_free_common()
264 	ieee80211_free_hw(wdev->hw);  in wfx_free_common()
288 	hw->vif_data_size = sizeof(struct wfx_vif);  in wfx_init_common()
289 	hw->sta_data_size = sizeof(struct wfx_sta_priv);  in wfx_init_common()
290 	hw->queues = 4;  in wfx_init_common()
291 	hw->max_rates = 8;  in wfx_init_common()
292 	hw->max_rate_tries = 8;  in wfx_init_common()
293 	hw->extra_tx_headroom = sizeof(struct wfx_hif_msg) + sizeof(struct wfx_hif_req_tx) +  in wfx_init_common()
295 	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |  in wfx_init_common()
298 	hw->wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |  in wfx_init_common()
302 	hw->wiphy->features |= NL80211_FEATURE_AP_SCAN;  in wfx_init_common()
304 	hw->wiphy->wowlan = &wfx_wowlan_support;  in wfx_init_common()
306 	hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;  in wfx_init_common()
307 	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;  in wfx_init_common()
308 	hw->wiphy->max_remain_on_channel_duration = 5000;  in wfx_init_common()
309 	hw->wiphy->max_ap_assoc_sta = HIF_LINK_ID_MAX;  in wfx_init_common()
310 	hw->wiphy->max_scan_ssids = 2;  in wfx_init_common()
311 	hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;  in wfx_init_common()
312 	hw->wiphy->n_iface_combinations = ARRAY_SIZE(wfx_iface_combinations);  in wfx_init_common()
313 	hw->wiphy->iface_combinations = wfx_iface_combinations;  in wfx_init_common()
315 	hw->wiphy->bands[NL80211_BAND_2GHZ] = devm_kmemdup(dev, &wfx_band_2ghz,  in wfx_init_common()
317 	if (!hw->wiphy->bands[NL80211_BAND_2GHZ])  in wfx_init_common()
320 	wdev = hw->priv;  in wfx_init_common()
321 	wdev->hw = hw;  in wfx_init_common()
322 	wdev->dev = dev;  in wfx_init_common()
323 	wdev->hwbus_ops = hwbus_ops;  in wfx_init_common()
324 	wdev->hwbus_priv = hwbus_priv;  in wfx_init_common()
325 	memcpy(&wdev->pdata, pdata, sizeof(*pdata));  in wfx_init_common()
326 	of_property_read_string(dev->of_node, "silabs,antenna-config-file", &wdev->pdata.file_pds);  in wfx_init_common()
327 	wdev->pdata.gpio_wakeup = devm_gpiod_get_optional(dev, "wakeup", GPIOD_OUT_LOW);  in wfx_init_common()
328 	if (IS_ERR(wdev->pdata.gpio_wakeup))  in wfx_init_common()
331 	if (wdev->pdata.gpio_wakeup)  in wfx_init_common()
332 		gpiod_set_consumer_name(wdev->pdata.gpio_wakeup, "wfx wakeup");  in wfx_init_common()
334 	mutex_init(&wdev->conf_mutex);  in wfx_init_common()
335 	mutex_init(&wdev->scan_lock);  in wfx_init_common()
336 	mutex_init(&wdev->rx_stats_lock);  in wfx_init_common()
337 	mutex_init(&wdev->tx_power_loop_info_lock);  in wfx_init_common()
338 	init_completion(&wdev->firmware_ready);  in wfx_init_common()
339 	INIT_DELAYED_WORK(&wdev->cooling_timeout_work, wfx_cooling_timeout_work);  in wfx_init_common()
340 	skb_queue_head_init(&wdev->tx_pending);  in wfx_init_common()
341 	init_waitqueue_head(&wdev->tx_dequeue);  in wfx_init_common()
342 	wfx_init_hif_cmd(&wdev->hif_cmd);  in wfx_init_common()
363 	gpio_saved = wdev->pdata.gpio_wakeup;  in wfx_probe()
364 	wdev->pdata.gpio_wakeup = NULL;  in wfx_probe()
365 	wdev->poll_irq = true;  in wfx_probe()
367 	wdev->bh_wq = alloc_workqueue("wfx_bh_wq", WQ_HIGHPRI, 0);  in wfx_probe()
368 	if (!wdev->bh_wq)  in wfx_probe()
369 		return -ENOMEM;  in wfx_probe()
378 	err = wait_for_completion_timeout(&wdev->firmware_ready, 1 * HZ);  in wfx_probe()
380 		dev_err(wdev->dev, "timeout while waiting for startup indication\n");  in wfx_probe()
381 		err = -ETIMEDOUT;  in wfx_probe()
386 	dev_info(wdev->dev, "started firmware %d.%d.%d \"%s\" (API: %d.%d, keyset: %02X, caps: 0x%.8X)\n",  in wfx_probe()
387 		 wdev->hw_caps.firmware_major, wdev->hw_caps.firmware_minor,  in wfx_probe()
388 		 wdev->hw_caps.firmware_build, wdev->hw_caps.firmware_label,  in wfx_probe()
389 		 wdev->hw_caps.api_version_major, wdev->hw_caps.api_version_minor,  in wfx_probe()
390 		 wdev->keyset, wdev->hw_caps.link_mode);  in wfx_probe()
391 	snprintf(wdev->hw->wiphy->fw_version,  in wfx_probe()
392 		 sizeof(wdev->hw->wiphy->fw_version),  in wfx_probe()
394 		 wdev->hw_caps.firmware_major,  in wfx_probe()
395 		 wdev->hw_caps.firmware_minor,  in wfx_probe()
396 		 wdev->hw_caps.firmware_build);  in wfx_probe()
399 		dev_err(wdev->dev, "unsupported firmware API version (expect 1 while firmware returns %d)\n",  in wfx_probe()
400 			wdev->hw_caps.api_version_major);  in wfx_probe()
401 		err = -EOPNOTSUPP;  in wfx_probe()
405 	if (wdev->hw_caps.link_mode == SEC_LINK_ENFORCED) {  in wfx_probe()
406 		dev_err(wdev->dev, "chip require secure_link, but can't negotiate it\n");  in wfx_probe()
410 	if (wdev->hw_caps.region_sel_mode) {  in wfx_probe()
411 		wdev->hw->wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS;  in wfx_probe()
412 		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[11].flags |=  in wfx_probe()
414 		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[12].flags |=  in wfx_probe()
416 		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[13].flags |=  in wfx_probe()
420 	dev_dbg(wdev->dev, "sending configuration file %s\n", wdev->pdata.file_pds);  in wfx_probe()
422 	if (err < 0 && err != -ENOENT)  in wfx_probe()
425 	wdev->poll_irq = false;  in wfx_probe()
426 	err = wdev->hwbus_ops->irq_subscribe(wdev->hwbus_priv);  in wfx_probe()
432 		dev_err(wdev->dev, "misconfigured IRQ?\n");  in wfx_probe()
434 	wdev->pdata.gpio_wakeup = gpio_saved;  in wfx_probe()
435 	if (wdev->pdata.gpio_wakeup) {  in wfx_probe()
436 		dev_dbg(wdev->dev, "enable 'quiescent' power mode with wakeup GPIO and PDS file %s\n",  in wfx_probe()
437 			wdev->pdata.file_pds);  in wfx_probe()
438 		gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);  in wfx_probe()
445 	for (i = 0; i < ARRAY_SIZE(wdev->addresses); i++) {  in wfx_probe()
446 		eth_zero_addr(wdev->addresses[i].addr);  in wfx_probe()
447 		err = of_get_mac_address(wdev->dev->of_node, wdev->addresses[i].addr);  in wfx_probe()
449 			wdev->addresses[i].addr[ETH_ALEN - 1] += i;  in wfx_probe()
451 			ether_addr_copy(wdev->addresses[i].addr, wdev->hw_caps.mac_addr[i]);  in wfx_probe()
452 		if (!is_valid_ether_addr(wdev->addresses[i].addr)) {  in wfx_probe()
453 			dev_warn(wdev->dev, "using random MAC address\n");  in wfx_probe()
454 			eth_random_addr(wdev->addresses[i].addr);  in wfx_probe()
456 		dev_info(wdev->dev, "MAC address %d: %pM\n", i, wdev->addresses[i].addr);  in wfx_probe()
458 	wdev->hw->wiphy->n_addresses = ARRAY_SIZE(wdev->addresses);  in wfx_probe()
459 	wdev->hw->wiphy->addresses = wdev->addresses;  in wfx_probe()
462 		wdev->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;  in wfx_probe()
464 	err = ieee80211_register_hw(wdev->hw);  in wfx_probe()
475 	ieee80211_unregister_hw(wdev->hw);  in wfx_probe()
477 	wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv);  in wfx_probe()
480 	destroy_workqueue(wdev->bh_wq);  in wfx_probe()
486 	ieee80211_unregister_hw(wdev->hw);  in wfx_release()
488 	wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv);  in wfx_release()
490 	destroy_workqueue(wdev->bh_wq);  in wfx_release()