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path: root/drivers/staging/wfx/main.c
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Diffstat (limited to 'drivers/staging/wfx/main.c')
-rw-r--r--drivers/staging/wfx/main.c506
1 files changed, 0 insertions, 506 deletions
diff --git a/drivers/staging/wfx/main.c b/drivers/staging/wfx/main.c
deleted file mode 100644
index 858d778cc589..000000000000
--- a/drivers/staging/wfx/main.c
+++ /dev/null
@@ -1,506 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Device probe and register.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (c) 2008, Johannes Berg <johannes@sipsolutions.net>
- * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
- * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
- * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
- * Copyright (c) 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
- */
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_net.h>
-#include <linux/gpio/consumer.h>
-#include <linux/mmc/sdio_func.h>
-#include <linux/spi/spi.h>
-#include <linux/etherdevice.h>
-#include <linux/firmware.h>
-
-#include "main.h"
-#include "wfx.h"
-#include "fwio.h"
-#include "hwio.h"
-#include "bus.h"
-#include "bh.h"
-#include "sta.h"
-#include "key.h"
-#include "scan.h"
-#include "debug.h"
-#include "data_tx.h"
-#include "hif_tx_mib.h"
-#include "hif_api_cmd.h"
-
-#define WFX_PDS_MAX_SIZE 1500
-
-MODULE_DESCRIPTION("Silicon Labs 802.11 Wireless LAN driver for WF200");
-MODULE_AUTHOR("Jérôme Pouiller <jerome.pouiller@silabs.com>");
-MODULE_LICENSE("GPL");
-
-#define RATETAB_ENT(_rate, _rateid, _flags) { \
- .bitrate = (_rate), \
- .hw_value = (_rateid), \
- .flags = (_flags), \
-}
-
-static struct ieee80211_rate wfx_rates[] = {
- RATETAB_ENT(10, 0, 0),
- RATETAB_ENT(20, 1, IEEE80211_RATE_SHORT_PREAMBLE),
- RATETAB_ENT(55, 2, IEEE80211_RATE_SHORT_PREAMBLE),
- RATETAB_ENT(110, 3, IEEE80211_RATE_SHORT_PREAMBLE),
- RATETAB_ENT(60, 6, 0),
- RATETAB_ENT(90, 7, 0),
- RATETAB_ENT(120, 8, 0),
- RATETAB_ENT(180, 9, 0),
- RATETAB_ENT(240, 10, 0),
- RATETAB_ENT(360, 11, 0),
- RATETAB_ENT(480, 12, 0),
- RATETAB_ENT(540, 13, 0),
-};
-
-#define CHAN2G(_channel, _freq, _flags) { \
- .band = NL80211_BAND_2GHZ, \
- .center_freq = (_freq), \
- .hw_value = (_channel), \
- .flags = (_flags), \
- .max_antenna_gain = 0, \
- .max_power = 30, \
-}
-
-static struct ieee80211_channel wfx_2ghz_chantable[] = {
- CHAN2G(1, 2412, 0),
- CHAN2G(2, 2417, 0),
- CHAN2G(3, 2422, 0),
- CHAN2G(4, 2427, 0),
- CHAN2G(5, 2432, 0),
- CHAN2G(6, 2437, 0),
- CHAN2G(7, 2442, 0),
- CHAN2G(8, 2447, 0),
- CHAN2G(9, 2452, 0),
- CHAN2G(10, 2457, 0),
- CHAN2G(11, 2462, 0),
- CHAN2G(12, 2467, 0),
- CHAN2G(13, 2472, 0),
- CHAN2G(14, 2484, 0),
-};
-
-static const struct ieee80211_supported_band wfx_band_2ghz = {
- .channels = wfx_2ghz_chantable,
- .n_channels = ARRAY_SIZE(wfx_2ghz_chantable),
- .bitrates = wfx_rates,
- .n_bitrates = ARRAY_SIZE(wfx_rates),
- .ht_cap = {
- /* Receive caps */
- .cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
- IEEE80211_HT_CAP_MAX_AMSDU |
- (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT),
- .ht_supported = 1,
- .ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K,
- .ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
- .mcs = {
- .rx_mask = { 0xFF }, /* MCS0 to MCS7 */
- .rx_highest = cpu_to_le16(72),
- .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
- },
- },
-};
-
-static const struct ieee80211_iface_limit wdev_iface_limits[] = {
- { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
- { .max = 1, .types = BIT(NL80211_IFTYPE_AP) },
-};
-
-static const struct ieee80211_iface_combination wfx_iface_combinations[] = {
- {
- .num_different_channels = 2,
- .max_interfaces = 2,
- .limits = wdev_iface_limits,
- .n_limits = ARRAY_SIZE(wdev_iface_limits),
- }
-};
-
-static const struct ieee80211_ops wfx_ops = {
- .start = wfx_start,
- .stop = wfx_stop,
- .add_interface = wfx_add_interface,
- .remove_interface = wfx_remove_interface,
- .config = wfx_config,
- .tx = wfx_tx,
- .join_ibss = wfx_join_ibss,
- .leave_ibss = wfx_leave_ibss,
- .conf_tx = wfx_conf_tx,
- .hw_scan = wfx_hw_scan,
- .cancel_hw_scan = wfx_cancel_hw_scan,
- .start_ap = wfx_start_ap,
- .stop_ap = wfx_stop_ap,
- .sta_add = wfx_sta_add,
- .sta_remove = wfx_sta_remove,
- .set_tim = wfx_set_tim,
- .set_key = wfx_set_key,
- .set_rts_threshold = wfx_set_rts_threshold,
- .set_default_unicast_key = wfx_set_default_unicast_key,
- .bss_info_changed = wfx_bss_info_changed,
- .configure_filter = wfx_configure_filter,
- .ampdu_action = wfx_ampdu_action,
- .flush = wfx_flush,
- .add_chanctx = wfx_add_chanctx,
- .remove_chanctx = wfx_remove_chanctx,
- .change_chanctx = wfx_change_chanctx,
- .assign_vif_chanctx = wfx_assign_vif_chanctx,
- .unassign_vif_chanctx = wfx_unassign_vif_chanctx,
-};
-
-bool wfx_api_older_than(struct wfx_dev *wdev, int major, int minor)
-{
- if (wdev->hw_caps.api_version_major < major)
- return true;
- if (wdev->hw_caps.api_version_major > major)
- return false;
- if (wdev->hw_caps.api_version_minor < minor)
- return true;
- return false;
-}
-
-/* The device needs data about the antenna configuration. This information in
- * provided by PDS (Platform Data Set, this is the wording used in WF200
- * documentation) files. For hardware integrators, the full process to create
- * PDS files is described here:
- * https:github.com/SiliconLabs/wfx-firmware/blob/master/PDS/README.md
- *
- * So this function aims to send PDS to the device. However, the PDS file is
- * often bigger than Rx buffers of the chip, so it has to be sent in multiple
- * parts.
- *
- * In add, the PDS data cannot be split anywhere. The PDS files contains tree
- * structures. Braces are used to enter/leave a level of the tree (in a JSON
- * fashion). PDS files can only been split between root nodes.
- */
-int wfx_send_pds(struct wfx_dev *wdev, u8 *buf, size_t len)
-{
- int ret;
- int start, brace_level, i;
-
- start = 0;
- brace_level = 0;
- if (buf[0] != '{') {
- dev_err(wdev->dev, "valid PDS start with '{'. Did you forget to compress it?\n");
- return -EINVAL;
- }
- for (i = 1; i < len - 1; i++) {
- if (buf[i] == '{')
- brace_level++;
- if (buf[i] == '}')
- brace_level--;
- if (buf[i] == '}' && !brace_level) {
- i++;
- if (i - start + 1 > WFX_PDS_MAX_SIZE)
- return -EFBIG;
- buf[start] = '{';
- buf[i] = 0;
- dev_dbg(wdev->dev, "send PDS '%s}'\n", buf + start);
- buf[i] = '}';
- ret = hif_configuration(wdev, buf + start,
- i - start + 1);
- if (ret > 0) {
- dev_err(wdev->dev, "PDS bytes %d to %d: invalid data (unsupported options?)\n",
- start, i);
- return -EINVAL;
- }
- if (ret == -ETIMEDOUT) {
- dev_err(wdev->dev, "PDS bytes %d to %d: chip didn't reply (corrupted file?)\n",
- start, i);
- return ret;
- }
- if (ret) {
- dev_err(wdev->dev, "PDS bytes %d to %d: chip returned an unknown error\n",
- start, i);
- return -EIO;
- }
- buf[i] = ',';
- start = i;
- }
- }
- return 0;
-}
-
-static int wfx_send_pdata_pds(struct wfx_dev *wdev)
-{
- int ret = 0;
- const struct firmware *pds;
- u8 *tmp_buf;
-
- ret = request_firmware(&pds, wdev->pdata.file_pds, wdev->dev);
- if (ret) {
- dev_err(wdev->dev, "can't load antenna parameters (PDS file %s). The device may be unstable.\n",
- wdev->pdata.file_pds);
- goto err1;
- }
- tmp_buf = kmemdup(pds->data, pds->size, GFP_KERNEL);
- if (!tmp_buf) {
- ret = -ENOMEM;
- goto err2;
- }
- ret = wfx_send_pds(wdev, tmp_buf, pds->size);
- kfree(tmp_buf);
-err2:
- release_firmware(pds);
-err1:
- return ret;
-}
-
-static void wfx_free_common(void *data)
-{
- struct wfx_dev *wdev = data;
-
- mutex_destroy(&wdev->tx_power_loop_info_lock);
- mutex_destroy(&wdev->rx_stats_lock);
- mutex_destroy(&wdev->conf_mutex);
- ieee80211_free_hw(wdev->hw);
-}
-
-struct wfx_dev *wfx_init_common(struct device *dev,
- const struct wfx_platform_data *pdata,
- const struct hwbus_ops *hwbus_ops,
- void *hwbus_priv)
-{
- struct ieee80211_hw *hw;
- struct wfx_dev *wdev;
-
- hw = ieee80211_alloc_hw(sizeof(struct wfx_dev), &wfx_ops);
- if (!hw)
- return NULL;
-
- SET_IEEE80211_DEV(hw, dev);
-
- ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
- ieee80211_hw_set(hw, AMPDU_AGGREGATION);
- ieee80211_hw_set(hw, CONNECTION_MONITOR);
- ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
- ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
- ieee80211_hw_set(hw, SIGNAL_DBM);
- ieee80211_hw_set(hw, SUPPORTS_PS);
- ieee80211_hw_set(hw, MFP_CAPABLE);
-
- hw->vif_data_size = sizeof(struct wfx_vif);
- hw->sta_data_size = sizeof(struct wfx_sta_priv);
- hw->queues = 4;
- hw->max_rates = 8;
- hw->max_rate_tries = 8;
- hw->extra_tx_headroom = sizeof(struct hif_msg)
- + sizeof(struct hif_req_tx)
- + 4 /* alignment */ + 8 /* TKIP IV */;
- hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
- BIT(NL80211_IFTYPE_ADHOC) |
- BIT(NL80211_IFTYPE_AP);
- hw->wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
- NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
- NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P |
- NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U;
- hw->wiphy->features |= NL80211_FEATURE_AP_SCAN;
- hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
- hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
- hw->wiphy->max_ap_assoc_sta = HIF_LINK_ID_MAX;
- hw->wiphy->max_scan_ssids = 2;
- hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
- hw->wiphy->n_iface_combinations = ARRAY_SIZE(wfx_iface_combinations);
- hw->wiphy->iface_combinations = wfx_iface_combinations;
- hw->wiphy->bands[NL80211_BAND_2GHZ] = devm_kmalloc(dev, sizeof(wfx_band_2ghz), GFP_KERNEL);
- /* FIXME: also copy wfx_rates and wfx_2ghz_chantable */
- memcpy(hw->wiphy->bands[NL80211_BAND_2GHZ], &wfx_band_2ghz,
- sizeof(wfx_band_2ghz));
-
- wdev = hw->priv;
- wdev->hw = hw;
- wdev->dev = dev;
- wdev->hwbus_ops = hwbus_ops;
- wdev->hwbus_priv = hwbus_priv;
- memcpy(&wdev->pdata, pdata, sizeof(*pdata));
- of_property_read_string(dev->of_node, "config-file",
- &wdev->pdata.file_pds);
- wdev->pdata.gpio_wakeup = devm_gpiod_get_optional(dev, "wakeup",
- GPIOD_OUT_LOW);
- if (IS_ERR(wdev->pdata.gpio_wakeup))
- return NULL;
- if (wdev->pdata.gpio_wakeup)
- gpiod_set_consumer_name(wdev->pdata.gpio_wakeup, "wfx wakeup");
-
- mutex_init(&wdev->conf_mutex);
- mutex_init(&wdev->rx_stats_lock);
- mutex_init(&wdev->tx_power_loop_info_lock);
- init_completion(&wdev->firmware_ready);
- INIT_DELAYED_WORK(&wdev->cooling_timeout_work,
- wfx_cooling_timeout_work);
- skb_queue_head_init(&wdev->tx_pending);
- init_waitqueue_head(&wdev->tx_dequeue);
- wfx_init_hif_cmd(&wdev->hif_cmd);
- wdev->force_ps_timeout = -1;
-
- if (devm_add_action_or_reset(dev, wfx_free_common, wdev))
- return NULL;
-
- return wdev;
-}
-
-int wfx_probe(struct wfx_dev *wdev)
-{
- int i;
- int err;
- struct gpio_desc *gpio_saved;
-
- /* During first part of boot, gpio_wakeup cannot yet been used. So
- * prevent bh() to touch it.
- */
- gpio_saved = wdev->pdata.gpio_wakeup;
- wdev->pdata.gpio_wakeup = NULL;
- wdev->poll_irq = true;
-
- wfx_bh_register(wdev);
-
- err = wfx_init_device(wdev);
- if (err)
- goto err0;
-
- wfx_bh_poll_irq(wdev);
- err = wait_for_completion_timeout(&wdev->firmware_ready, 1 * HZ);
- if (err <= 0) {
- if (err == 0) {
- dev_err(wdev->dev, "timeout while waiting for startup indication\n");
- err = -ETIMEDOUT;
- } else if (err == -ERESTARTSYS) {
- dev_info(wdev->dev, "probe interrupted by user\n");
- }
- goto err0;
- }
-
- /* FIXME: fill wiphy::hw_version */
- dev_info(wdev->dev, "started firmware %d.%d.%d \"%s\" (API: %d.%d, keyset: %02X, caps: 0x%.8X)\n",
- wdev->hw_caps.firmware_major, wdev->hw_caps.firmware_minor,
- wdev->hw_caps.firmware_build, wdev->hw_caps.firmware_label,
- wdev->hw_caps.api_version_major, wdev->hw_caps.api_version_minor,
- wdev->keyset, wdev->hw_caps.link_mode);
- snprintf(wdev->hw->wiphy->fw_version,
- sizeof(wdev->hw->wiphy->fw_version),
- "%d.%d.%d",
- wdev->hw_caps.firmware_major,
- wdev->hw_caps.firmware_minor,
- wdev->hw_caps.firmware_build);
-
- if (wfx_api_older_than(wdev, 1, 0)) {
- dev_err(wdev->dev,
- "unsupported firmware API version (expect 1 while firmware returns %d)\n",
- wdev->hw_caps.api_version_major);
- err = -ENOTSUPP;
- goto err0;
- }
-
- if (wdev->hw_caps.link_mode == SEC_LINK_ENFORCED) {
- dev_err(wdev->dev,
- "chip require secure_link, but can't negotiate it\n");
- goto err0;
- }
-
- if (wdev->hw_caps.region_sel_mode) {
- wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[11].flags |= IEEE80211_CHAN_NO_IR;
- wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[12].flags |= IEEE80211_CHAN_NO_IR;
- wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[13].flags |= IEEE80211_CHAN_DISABLED;
- }
-
- dev_dbg(wdev->dev, "sending configuration file %s\n",
- wdev->pdata.file_pds);
- err = wfx_send_pdata_pds(wdev);
- if (err < 0 && err != -ENOENT)
- goto err0;
-
- wdev->poll_irq = false;
- err = wdev->hwbus_ops->irq_subscribe(wdev->hwbus_priv);
- if (err)
- goto err0;
-
- err = hif_use_multi_tx_conf(wdev, true);
- if (err)
- dev_err(wdev->dev, "misconfigured IRQ?\n");
-
- wdev->pdata.gpio_wakeup = gpio_saved;
- if (wdev->pdata.gpio_wakeup) {
- dev_dbg(wdev->dev,
- "enable 'quiescent' power mode with wakeup GPIO and PDS file %s\n",
- wdev->pdata.file_pds);
- gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);
- control_reg_write(wdev, 0);
- hif_set_operational_mode(wdev, HIF_OP_POWER_MODE_QUIESCENT);
- } else {
- hif_set_operational_mode(wdev, HIF_OP_POWER_MODE_DOZE);
- }
-
- for (i = 0; i < ARRAY_SIZE(wdev->addresses); i++) {
- eth_zero_addr(wdev->addresses[i].addr);
- err = of_get_mac_address(wdev->dev->of_node,
- wdev->addresses[i].addr);
- if (!err) {
- wdev->addresses[i].addr[ETH_ALEN - 1] += i;
- } else {
- ether_addr_copy(wdev->addresses[i].addr,
- wdev->hw_caps.mac_addr[i]);
- }
- if (!is_valid_ether_addr(wdev->addresses[i].addr)) {
- dev_warn(wdev->dev, "using random MAC address\n");
- eth_random_addr(wdev->addresses[i].addr);
- }
- dev_info(wdev->dev, "MAC address %d: %pM\n", i,
- wdev->addresses[i].addr);
- }
- wdev->hw->wiphy->n_addresses = ARRAY_SIZE(wdev->addresses);
- wdev->hw->wiphy->addresses = wdev->addresses;
-
- if (!wfx_api_older_than(wdev, 3, 8))
- wdev->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
-
- err = ieee80211_register_hw(wdev->hw);
- if (err)
- goto err1;
-
- err = wfx_debug_init(wdev);
- if (err)
- goto err2;
-
- return 0;
-
-err2:
- ieee80211_unregister_hw(wdev->hw);
-err1:
- wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv);
-err0:
- wfx_bh_unregister(wdev);
- return err;
-}
-
-void wfx_release(struct wfx_dev *wdev)
-{
- ieee80211_unregister_hw(wdev->hw);
- hif_shutdown(wdev);
- wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv);
- wfx_bh_unregister(wdev);
-}
-
-static int __init wfx_core_init(void)
-{
- int ret = 0;
-
- if (IS_ENABLED(CONFIG_SPI))
- ret = spi_register_driver(&wfx_spi_driver);
- if (IS_ENABLED(CONFIG_MMC) && !ret)
- ret = sdio_register_driver(&wfx_sdio_driver);
- return ret;
-}
-module_init(wfx_core_init);
-
-static void __exit wfx_core_exit(void)
-{
- if (IS_ENABLED(CONFIG_MMC))
- sdio_unregister_driver(&wfx_sdio_driver);
- if (IS_ENABLED(CONFIG_SPI))
- spi_unregister_driver(&wfx_spi_driver);
-}
-module_exit(wfx_core_exit);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.