Return-path: Received: from mail-la0-f50.google.com ([209.85.215.50]:41404 "EHLO mail-la0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751781Ab3HTRlf (ORCPT ); Tue, 20 Aug 2013 13:41:35 -0400 Received: by mail-la0-f50.google.com with SMTP id ek20so537262lab.23 for ; Tue, 20 Aug 2013 10:41:33 -0700 (PDT) From: Eugene Krasnikov To: linux-wireless@vger.kernel.org Cc: wcn36xx@lists.infradead.org, Eugene Krasnikov Subject: [PATCH 01/16] wcn36xx: Add main.c Date: Tue, 20 Aug 2013 19:41:04 +0200 Message-Id: <1377020479-16935-2-git-send-email-k.eugene.e@gmail.com> (sfid-20130820_194139_161691_2D6AE83A) In-Reply-To: <1377020479-16935-1-git-send-email-k.eugene.e@gmail.com> References: <1377020479-16935-1-git-send-email-k.eugene.e@gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: Main file. Signed-off-by: Eugene Krasnikov --- drivers/net/wireless/ath/wcn36xx/main.c | 1034 +++++++++++++++++++++++++++++++ 1 file changed, 1034 insertions(+) create mode 100644 drivers/net/wireless/ath/wcn36xx/main.c diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c new file mode 100644 index 0000000..c2d1026 --- /dev/null +++ b/drivers/net/wireless/ath/wcn36xx/main.c @@ -0,0 +1,1034 @@ +/* + * Copyright (c) 2013 Eugene Krasnikov + * + * 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 "wcn36xx.h" + +unsigned int debug_mask; +module_param(debug_mask, uint, 0644); +MODULE_PARM_DESC(debug_mask, "Debugging mask"); + +#define CHAN2G(_freq, _idx) { \ + .band = IEEE80211_BAND_2GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_idx), \ + .max_power = 25, \ +} + +#define CHAN5G(_freq, _idx) { \ + .band = IEEE80211_BAND_5GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_idx), \ + .max_power = 25, \ +} + +/* The wcn firmware expects channel values to matching + * their mnemonic values. So use these for .hw_value. */ +static struct ieee80211_channel wcn_2ghz_channels[] = { + CHAN2G(2412, 1), /* Channel 1 */ + CHAN2G(2417, 2), /* Channel 2 */ + CHAN2G(2422, 3), /* Channel 3 */ + CHAN2G(2427, 4), /* Channel 4 */ + CHAN2G(2432, 5), /* Channel 5 */ + CHAN2G(2437, 6), /* Channel 6 */ + CHAN2G(2442, 7), /* Channel 7 */ + CHAN2G(2447, 8), /* Channel 8 */ + CHAN2G(2452, 9), /* Channel 9 */ + CHAN2G(2457, 10), /* Channel 10 */ + CHAN2G(2462, 11), /* Channel 11 */ + CHAN2G(2467, 12), /* Channel 12 */ + CHAN2G(2472, 13), /* Channel 13 */ + CHAN2G(2484, 14) /* Channel 14 */ + +}; + +static struct ieee80211_channel wcn_5ghz_channels[] = { + CHAN5G(5180, 36), + CHAN5G(5200, 40), + CHAN5G(5220, 44), + CHAN5G(5240, 48), + CHAN5G(5260, 52), + CHAN5G(5280, 56), + CHAN5G(5300, 60), + CHAN5G(5320, 64), + CHAN5G(5500, 100), + CHAN5G(5520, 104), + CHAN5G(5540, 108), + CHAN5G(5560, 112), + CHAN5G(5580, 116), + CHAN5G(5600, 120), + CHAN5G(5620, 124), + CHAN5G(5640, 128), + CHAN5G(5660, 132), + CHAN5G(5700, 140), + CHAN5G(5745, 149), + CHAN5G(5765, 153), + CHAN5G(5785, 157), + CHAN5G(5805, 161), + CHAN5G(5825, 165) +}; + +#define RATE(_bitrate, _hw_rate, _flags) { \ + .bitrate = (_bitrate), \ + .flags = (_flags), \ + .hw_value = (_hw_rate), \ + .hw_value_short = (_hw_rate) \ +} + +static struct ieee80211_rate wcn_2ghz_rates[] = { + RATE(10, HW_RATE_INDEX_1MBPS, 0), + RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE), + RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE), + RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE), + RATE(60, HW_RATE_INDEX_6MBPS, 0), + RATE(90, HW_RATE_INDEX_9MBPS, 0), + RATE(120, HW_RATE_INDEX_12MBPS, 0), + RATE(180, HW_RATE_INDEX_18MBPS, 0), + RATE(240, HW_RATE_INDEX_24MBPS, 0), + RATE(360, HW_RATE_INDEX_36MBPS, 0), + RATE(480, HW_RATE_INDEX_48MBPS, 0), + RATE(540, HW_RATE_INDEX_54MBPS, 0) +}; + +static struct ieee80211_rate wcn_5ghz_rates[] = { + RATE(60, HW_RATE_INDEX_6MBPS, 0), + RATE(90, HW_RATE_INDEX_9MBPS, 0), + RATE(120, HW_RATE_INDEX_12MBPS, 0), + RATE(180, HW_RATE_INDEX_18MBPS, 0), + RATE(240, HW_RATE_INDEX_24MBPS, 0), + RATE(360, HW_RATE_INDEX_36MBPS, 0), + RATE(480, HW_RATE_INDEX_48MBPS, 0), + RATE(540, HW_RATE_INDEX_54MBPS, 0) +}; + +static struct ieee80211_supported_band wcn_band_2ghz = { + .channels = wcn_2ghz_channels, + .n_channels = ARRAY_SIZE(wcn_2ghz_channels), + .bitrates = wcn_2ghz_rates, + .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates), + .ht_cap = { + .cap = IEEE80211_HT_CAP_GRN_FLD + | IEEE80211_HT_CAP_SGI_20 + | IEEE80211_HT_CAP_DSSSCCK40 + | IEEE80211_HT_CAP_LSIG_TXOP_PROT, + .ht_supported = true, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, + .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, + .mcs = { + .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, + .rx_highest = cpu_to_le16(72), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED, + } + } +}; + +static struct ieee80211_supported_band wcn_band_5ghz = { + .channels = wcn_5ghz_channels, + .n_channels = ARRAY_SIZE(wcn_5ghz_channels), + .bitrates = wcn_5ghz_rates, + .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates), + .ht_cap = { + .cap = IEEE80211_HT_CAP_GRN_FLD + | IEEE80211_HT_CAP_SGI_20 + | IEEE80211_HT_CAP_DSSSCCK40 + | IEEE80211_HT_CAP_LSIG_TXOP_PROT + | IEEE80211_HT_CAP_SGI_40 + | IEEE80211_HT_CAP_SUP_WIDTH_20_40, + .ht_supported = true, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, + .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, + .mcs = { + .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, + .rx_highest = cpu_to_le16(72), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED, + } + } +}; + +static const struct ieee80211_iface_limit if_limits[] = { + { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) }, + { .max = 1, .types = BIT(NL80211_IFTYPE_AP) }, +}; + +static const struct ieee80211_iface_combination if_comb = { + .limits = if_limits, + .n_limits = ARRAY_SIZE(if_limits), + .max_interfaces = 2, + .num_different_channels = 1, +}; + +#ifdef CONFIG_PM + +static const struct wiphy_wowlan_support wowlan_support = { + .flags = WIPHY_WOWLAN_ANY, + .n_patterns = 0, +}; + +#endif + +static inline u8 get_sta_index(struct ieee80211_vif *vif, + struct wcn36xx_sta *sta_priv) +{ + return NL80211_IFTYPE_STATION == vif->type ? + sta_priv->bss_sta_index : + sta_priv->sta_index; +} + +static int wcn36xx_start(struct ieee80211_hw *hw) +{ + struct wcn36xx *wcn = hw->priv; + int ret; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start"); + + /* SMD initialization */ + ret = wcn36xx_smd_open(wcn); + if (ret) { + wcn36xx_error("Failed to open smd channel: %d", ret); + goto out_err; + } + + /* Allocate memory pools for Mgmt BD headers and Data BD headers */ + ret = wcn36xx_dxe_allocate_mem_pools(wcn); + if (ret) { + wcn36xx_error("Failed to alloc DXE mempool: %d", ret); + goto out_smd_close; + } + + ret = wcn36xx_dxe_alloc_ctl_blks(wcn); + if (ret) { + wcn36xx_error("Failed to alloc DXE ctl blocks: %d", ret); + goto out_free_dxe_pool; + } + + /* Maximum SMD message size is 4k */ + wcn->smd_buf = kmalloc(WCN36XX_SMD_BUF_SIZE, GFP_KERNEL); + if (!wcn->smd_buf) { + wcn36xx_error("Failed to allocate smd buf"); + ret = -ENOMEM; + goto out_free_dxe_ctl; + } + + ret = wcn36xx_smd_load_nv(wcn); + if (ret) { + wcn36xx_error("Failed to push NV to chip"); + goto out_free_smd_buf; + } + + ret = wcn36xx_smd_start(wcn); + if (ret) { + wcn36xx_error("Failed to start chip"); + goto out_free_smd_buf; + } + + /* DMA channel initialization */ + ret = wcn36xx_dxe_init(wcn); + if (ret) { + wcn36xx_error("DXE init failed"); + goto out_smd_stop; + } + + wcn36xx_pmc_init(wcn); + wcn36xx_debugfs_init(wcn); + + if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) { + ret = wcn36xx_smd_feature_caps_exchange(wcn); + if (ret) + wcn36xx_warn("Exchange feature caps failed"); + } + + return 0; + +out_smd_stop: + wcn36xx_smd_stop(wcn); +out_free_smd_buf: + kfree(wcn->smd_buf); +out_free_dxe_pool: + wcn36xx_dxe_free_mem_pools(wcn); +out_free_dxe_ctl: + wcn36xx_dxe_free_ctl_blks(wcn); +out_smd_close: + wcn36xx_smd_close(wcn); +out_err: + return ret; +} + +static void wcn36xx_stop(struct ieee80211_hw *hw) +{ + struct wcn36xx *wcn = hw->priv; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop"); + + wcn36xx_debugfs_exit(wcn); + wcn36xx_smd_stop(wcn); + wcn36xx_dxe_deinit(wcn); + wcn36xx_smd_close(wcn); + + wcn36xx_dxe_free_mem_pools(wcn); + wcn36xx_dxe_free_ctl_blks(wcn); + + kfree(wcn->smd_buf); +} + +static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed) +{ + struct wcn36xx *wcn = hw->priv; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x", changed); + + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + int ch = WCN36XX_HW_CHANNEL(wcn); + wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d", + ch); + wcn36xx_smd_switch_channel(wcn, ch); + } + + return 0; +} + +#define WCN36XX_SUPPORTED_FILTERS (0) + +static void wcn36xx_configure_filter(struct ieee80211_hw *hw, + unsigned int changed, + unsigned int *total, u64 multicast) +{ + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter"); + + changed &= WCN36XX_SUPPORTED_FILTERS; + *total &= WCN36XX_SUPPORTED_FILTERS; +} + +static void wcn36xx_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct wcn36xx *wcn = hw->priv; + struct wcn36xx_sta *sta_priv = NULL; + + if (control->sta) + sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv; + + wcn36xx_start_tx(wcn, sta_priv, skb); +} + +static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key_conf) +{ + struct wcn36xx *wcn = hw->priv; + struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv; + int ret = 0; + u8 key[WLAN_MAX_KEY_LEN]; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key"); + wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x", + cmd, key_conf->cipher, key_conf->keyidx, + key_conf->keylen, key_conf->flags); + wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ", + key_conf->key, + key_conf->keylen); + + switch (key_conf->cipher) { + case WLAN_CIPHER_SUITE_CCMP: + wcn->encrypt_type = WCN36XX_HAL_ED_CCMP; + break; + case WLAN_CIPHER_SUITE_TKIP: + wcn->encrypt_type = WCN36XX_HAL_ED_TKIP; + break; + default: + wcn36xx_error("Unsupported key type 0x%x", + key_conf->cipher); + ret = -EOPNOTSUPP; + goto out; + } + + switch (cmd) { + case SET_KEY: + if (WCN36XX_HAL_ED_TKIP == wcn->encrypt_type) { + /* + * Supplicant is sending key in the wrong order: + * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b) + * but HW expects it to be in the order as described in + * IEEE 802.11 spec (see chapter 11.7) like this: + * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b) + */ + memcpy(key, key_conf->key, 16); + memcpy(key + 16, key_conf->key + 24, 8); + memcpy(key + 24, key_conf->key + 16, 8); + } else { + memcpy(key, key_conf->key, key_conf->keylen); + } + + if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) { + sta_priv->is_data_encrypted = true; + /* Reconfigure bss with encrypt_type */ + if (NL80211_IFTYPE_STATION == vif->type) + wcn36xx_smd_config_bss(wcn, + vif, + sta, + sta->addr, + true); + + wcn36xx_smd_set_stakey(wcn, + wcn->encrypt_type, + key_conf->keyidx, + key_conf->keylen, + key, + get_sta_index(vif, sta_priv)); + } else { + wcn36xx_smd_set_bsskey(wcn, + wcn->encrypt_type, + key_conf->keyidx, + key_conf->keylen, + key); + } + break; + case DISABLE_KEY: + if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) { + wcn36xx_smd_remove_bsskey(wcn, + wcn->encrypt_type, + key_conf->keyidx); + } else { + sta_priv->is_data_encrypted = false; + /* do not remove key if disassociated */ + if (wcn->aid) + wcn36xx_smd_remove_stakey(wcn, + wcn->encrypt_type, + key_conf->keyidx, + get_sta_index(vif, sta_priv)); + } + break; + default: + wcn36xx_error("Unsupported key cmd 0x%x", cmd); + ret = -EOPNOTSUPP; + goto out; + break; + } + +out: + return ret; +} + +static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw) +{ + struct wcn36xx *wcn = hw->priv; + + wcn36xx_smd_init_scan(wcn); + wcn36xx_smd_start_scan(wcn); +} + +static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw) +{ + struct wcn36xx *wcn = hw->priv; + + wcn36xx_smd_end_scan(wcn); + wcn36xx_smd_finish_scan(wcn); +} + +static void wcn36xx_update_allowed_rates(struct wcn36xx *wcn, + struct ieee80211_sta *sta) +{ + int i, size; + u16 *rates_table; + u32 rates = sta->supp_rates[wcn->hw->conf.chandef.chan->band]; + + memset(&wcn->supported_rates, 0, sizeof(wcn->supported_rates)); + wcn->supported_rates.op_rate_mode = STA_11n; + + size = ARRAY_SIZE(wcn->supported_rates.dsss_rates); + rates_table = wcn->supported_rates.dsss_rates; + if (wcn->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) { + for (i = 0; i < size; i++) { + if (rates & 0x01) { + rates_table[i] = wcn_2ghz_rates[i].hw_value; + rates = rates >> 1; + } + } + } + + size = ARRAY_SIZE(wcn->supported_rates.ofdm_rates); + rates_table = wcn->supported_rates.ofdm_rates; + for (i = 0; i < size; i++) { + if (rates & 0x01) { + rates_table[i] = wcn_5ghz_rates[i].hw_value; + rates = rates >> 1; + } + } + + if (sta->ht_cap.ht_supported) { + memcpy(wcn->supported_rates.supported_mcs_set, + sta->ht_cap.mcs.rx_mask, + sizeof(sta->ht_cap.mcs.rx_mask)); + BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) > + sizeof(wcn->supported_rates.supported_mcs_set)); + } +} + +static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changed) +{ + struct wcn36xx *wcn = hw->priv; + struct sk_buff *skb = NULL; + u16 tim_off, tim_len; + enum wcn36xx_hal_link_state link_state; + + wcn->current_vif = (struct wcn36xx_vif *)vif->drv_priv; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x", + vif, changed); + + if (changed & BSS_CHANGED_BEACON_INFO) { + wcn36xx_dbg(WCN36XX_DBG_MAC, + "mac bss changed dtim period %d", + bss_conf->dtim_period); + + wcn->dtim_period = bss_conf->dtim_period; + } + + if (changed & BSS_CHANGED_BSSID) { + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM", + bss_conf->bssid); + + if (!is_zero_ether_addr(bss_conf->bssid)) { + wcn->is_joining = true; + wcn->current_vif->bss_index = 0xff; + wcn36xx_smd_join(wcn, bss_conf->bssid, + vif->addr, WCN36XX_HW_CHANNEL(wcn)); + wcn36xx_smd_config_bss(wcn, vif, NULL, + bss_conf->bssid, false); + } else { + wcn->is_joining = false; + wcn36xx_smd_delete_bss(wcn); + } + } + + if (changed & BSS_CHANGED_SSID) { + wcn36xx_dbg(WCN36XX_DBG_MAC, + "mac bss changed ssid"); + wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ", + bss_conf->ssid, bss_conf->ssid_len); + + wcn->ssid.length = bss_conf->ssid_len; + memcpy(&wcn->ssid.ssid, bss_conf->ssid, bss_conf->ssid_len); + } + + if (changed & BSS_CHANGED_ASSOC) { + wcn->is_joining = false; + if (bss_conf->assoc) { + struct ieee80211_sta *sta; + struct wcn36xx_sta *sta_priv; + + wcn36xx_dbg(WCN36XX_DBG_MAC, + "mac assoc bss %pM vif %pM AID=%d", + bss_conf->bssid, + vif->addr, + bss_conf->aid); + + wcn->aid = bss_conf->aid; + + rcu_read_lock(); + sta = ieee80211_find_sta(vif, bss_conf->bssid); + if (!sta) { + wcn36xx_error("sta %pM is not found", + bss_conf->bssid); + rcu_read_unlock(); + goto out; + } + sta_priv = (struct wcn36xx_sta *)sta->drv_priv; + + wcn36xx_update_allowed_rates(wcn, sta); + + wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, + vif->addr, + WCN36XX_HAL_LINK_POSTASSOC_STATE); + wcn->sta = sta_priv; + wcn36xx_smd_config_bss(wcn, vif, sta, + bss_conf->bssid, + true); + rcu_read_unlock(); + } else { + wcn36xx_dbg(WCN36XX_DBG_MAC, + "disassociated bss %pM vif %pM AID=%d", + bss_conf->bssid, + vif->addr, + bss_conf->aid); + wcn->aid = 0; + wcn36xx_smd_set_link_st(wcn, + bss_conf->bssid, + vif->addr, + WCN36XX_HAL_LINK_IDLE_STATE); + } + } + + if (changed & BSS_CHANGED_AP_PROBE_RESP) { + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp"); + skb = ieee80211_proberesp_get(hw, vif); + if (!skb) { + wcn36xx_error("failed to alloc probereq skb"); + goto out; + } + + wcn36xx_smd_update_proberesp_tmpl(wcn, skb); + dev_kfree_skb(skb); + } + + if (changed & BSS_CHANGED_BEACON_ENABLED) { + wcn36xx_dbg(WCN36XX_DBG_MAC, + "mac bss changed beacon enabled %d", + bss_conf->enable_beacon); + + if (bss_conf->enable_beacon) { + wcn->current_vif->bss_index = 0xff; + wcn36xx_smd_config_bss(wcn, vif, NULL, + wcn->addresses.addr, false); + skb = ieee80211_beacon_get_tim(hw, vif, &tim_off, + &tim_len); + if (!skb) { + wcn36xx_error("failed to alloc beacon skb"); + goto out; + } + wcn36xx_smd_send_beacon(wcn, skb, tim_off, 0); + dev_kfree_skb(skb); + + if (vif->type == NL80211_IFTYPE_ADHOC || + vif->type == NL80211_IFTYPE_MESH_POINT) + link_state = WCN36XX_HAL_LINK_IBSS_STATE; + else + link_state = WCN36XX_HAL_LINK_AP_STATE; + + wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, + link_state); + } else { + wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr, + WCN36XX_HAL_LINK_IDLE_STATE); + wcn36xx_smd_delete_bss(wcn); + } + } +out: + return; +} + +/* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */ +static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct wcn36xx *wcn = hw->priv; + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d", value); + + wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value); + return 0; +} + +static void wcn36xx_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct wcn36xx *wcn = hw->priv; + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p", vif); + wcn36xx_smd_delete_sta_self(wcn, vif->addr); +} + +static int wcn36xx_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct wcn36xx *wcn = hw->priv; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d", + vif, vif->type); + + wcn->current_vif = (struct wcn36xx_vif *)vif->drv_priv; + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + wcn36xx_smd_add_sta_self(wcn, vif->addr, 0); + break; + case NL80211_IFTYPE_AP: + wcn36xx_smd_add_sta_self(wcn, vif->addr, 0); + break; + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_MESH_POINT: + wcn36xx_smd_add_sta_self(wcn, vif->addr, 0); + break; + default: + wcn36xx_warn("Unsupported interface type requested: %d", + vif->type); + return -EOPNOTSUPP; + } + + return 0; +} + +static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct wcn36xx *wcn = hw->priv; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM", + vif, sta->addr); + + wcn->sta = (struct wcn36xx_sta *)sta->drv_priv; + wcn->aid = sta->aid; + wcn36xx_smd_config_sta(wcn, vif, sta); + + return 0; +} + +static int wcn36xx_sta_remove(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct wcn36xx *wcn = hw->priv; + struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d", + vif, sta->addr, sta_priv->sta_index); + + wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index); + + return 0; +} + +#ifdef CONFIG_PM + +static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow) +{ + struct wcn36xx *wcn = hw->priv; + struct ieee80211_vif *vif = container_of((void *)wcn->current_vif, + struct ieee80211_vif, + drv_priv); + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend"); + + mutex_lock(&wcn->pm_mutex); + + /* Enter BMPS only in connected state */ + if ((wcn->aid > 0) && + (wcn->pw_state != WCN36XX_BMPS) && + (NL80211_IFTYPE_STATION == vif->type)) + wcn36xx_pmc_enter_bmps_state(wcn, vif->bss_conf.sync_tsf); + + wcn->is_suspended = true; + wcn->is_con_lost_pending = false; + + mutex_unlock(&wcn->pm_mutex); + + return 0; +} + +static int wcn36xx_resume(struct ieee80211_hw *hw) +{ + struct wcn36xx *wcn = hw->priv; + struct ieee80211_vif *vif = container_of((void *)wcn->current_vif, + struct ieee80211_vif, + drv_priv); + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume"); + + wcn->is_suspended = false; + + if (wcn->pw_state == WCN36XX_BMPS) + wcn36xx_pmc_exit_bmps_state(wcn); + + if (wcn->is_con_lost_pending) { + wcn36xx_dbg(WCN36XX_DBG_MAC, "report connection lost"); + ieee80211_connection_loss(vif); + } + + return 0; +} + +#endif + +static int wcn36xx_ampdu_action(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + enum ieee80211_ampdu_mlme_action action, + struct ieee80211_sta *sta, u16 tid, u16 *ssn, + u8 buf_size) +{ + struct wcn36xx *wcn = hw->priv; + struct wcn36xx_sta *sta_priv = NULL; + + wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d", + action, tid); + + sta_priv = (struct wcn36xx_sta *)sta->drv_priv; + + switch (action) { + case IEEE80211_AMPDU_RX_START: + sta_priv->tid = tid; + wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0, + get_sta_index(vif, sta_priv)); + wcn36xx_smd_add_ba(wcn); + wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv)); + ieee80211_start_tx_ba_session(sta, tid, 0); + break; + case IEEE80211_AMPDU_RX_STOP: + wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv)); + break; + case IEEE80211_AMPDU_TX_START: + ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); + break; + case IEEE80211_AMPDU_TX_OPERATIONAL: + wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1, + get_sta_index(vif, sta_priv)); + break; + /* Not supported so far*/ + case IEEE80211_AMPDU_TX_STOP_CONT: + ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); + break; + case IEEE80211_AMPDU_TX_STOP_FLUSH: + case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: + break; + default: + wcn36xx_error("Unknown AMPDU action"); + } + + return 0; +} + +static const struct ieee80211_ops wcn36xx_ops = { + .start = wcn36xx_start, + .stop = wcn36xx_stop, + .add_interface = wcn36xx_add_interface, + .remove_interface = wcn36xx_remove_interface, +#ifdef CONFIG_PM + .suspend = wcn36xx_suspend, + .resume = wcn36xx_resume, +#endif + .config = wcn36xx_config, + .configure_filter = wcn36xx_configure_filter, + .tx = wcn36xx_tx, + .set_key = wcn36xx_set_key, + .sw_scan_start = wcn36xx_sw_scan_start, + .sw_scan_complete = wcn36xx_sw_scan_complete, + .bss_info_changed = wcn36xx_bss_info_changed, + .set_rts_threshold = wcn36xx_set_rts_threshold, + .sta_add = wcn36xx_sta_add, + .sta_remove = wcn36xx_sta_remove, + .ampdu_action = wcn36xx_ampdu_action, +}; + +static int wcn36xx_init_ieee80211(struct wcn36xx *wcn) +{ + int ret = 0; + + static const u32 cipher_suites[] = { + WLAN_CIPHER_SUITE_TKIP, + WLAN_CIPHER_SUITE_CCMP, + }; + + wcn->hw->flags = IEEE80211_HW_SIGNAL_DBM | + IEEE80211_HW_HAS_RATE_CONTROL | + IEEE80211_HW_SUPPORTS_PS | + IEEE80211_HW_CONNECTION_MONITOR | + IEEE80211_HW_AMPDU_AGGREGATION | + IEEE80211_HW_TIMING_BEACON_ONLY; + + wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_MESH_POINT); + + wcn->hw->wiphy->iface_combinations = &if_comb; + wcn->hw->wiphy->n_iface_combinations = 1; + + wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz; + wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz; + + wcn->hw->wiphy->max_scan_ssids = 1; + + wcn->hw->wiphy->cipher_suites = cipher_suites; + wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); + + wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD; + +#ifdef CONFIG_PM + wcn->hw->wiphy->wowlan = &wowlan_support; +#endif + + wcn->hw->wiphy->n_addresses = 1; + wcn->hw->wiphy->addresses = &wcn->addresses; + + wcn->hw->max_listen_interval = 200; + + wcn->hw->queues = 4; + + SET_IEEE80211_DEV(wcn->hw, wcn->dev); + + wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta); + wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif); + + return ret; +} + +static int wcn36xx_platform_get_resources(struct wcn36xx *wcn, + struct platform_device *pdev) +{ + struct resource *res; + /* Set TX IRQ */ + res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, + "wcnss_wlantx_irq"); + if (!res) { + wcn36xx_error("failed to get tx_irq"); + return -ENOENT; + } + wcn->tx_irq = res->start; + + /* Set RX IRQ */ + res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, + "wcnss_wlanrx_irq"); + if (!res) { + wcn36xx_error("failed to get rx_irq"); + return -ENOENT; + } + wcn->rx_irq = res->start; + + /* Map the memory */ + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "wcnss_mmio"); + if (!res) { + wcn36xx_error("failed to get mmio"); + return -ENOENT; + } + wcn->mmio = ioremap(res->start, resource_size(res)); + if (!wcn->mmio) { + wcn36xx_error("failed to map io memory"); + return -ENOMEM; + } + return 0; +} + +static int wcn36xx_probe(struct platform_device *pdev) +{ + struct ieee80211_hw *hw; + struct wcn36xx *wcn; + int ret; + u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = { + HW_RATE_INDEX_6MBPS, + HW_RATE_INDEX_9MBPS, + HW_RATE_INDEX_12MBPS, + HW_RATE_INDEX_18MBPS, + HW_RATE_INDEX_24MBPS, + HW_RATE_INDEX_36MBPS, + HW_RATE_INDEX_48MBPS, + HW_RATE_INDEX_54MBPS + }; + u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = { + HW_RATE_INDEX_1MBPS, + HW_RATE_INDEX_2MBPS, + HW_RATE_INDEX_5_5MBPS, + HW_RATE_INDEX_11MBPS + }; + wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe"); + + hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops); + if (!hw) { + wcn36xx_error("failed to alloc hw"); + ret = -ENOMEM; + goto out_err; + } + platform_set_drvdata(pdev, hw); + wcn = hw->priv; + wcn->hw = hw; + wcn->dev = &pdev->dev; + wcn->ctrl_ops = pdev->dev.platform_data; + + mutex_init(&wcn->pm_mutex); + mutex_init(&wcn->smd_mutex); + + /* Configuring supported rates */ + wcn->supported_rates.op_rate_mode = STA_11n; + memcpy(wcn->supported_rates.dsss_rates, dsss_rates, + sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES); + memcpy(wcn->supported_rates.ofdm_rates, ofdm_rates, + sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES); + wcn->supported_rates.supported_mcs_set[0] = 0xFF; + + if (!wcn->ctrl_ops->get_hw_mac(wcn->addresses.addr)) { + wcn36xx_info("mac address: %pM", wcn->addresses.addr); + SET_IEEE80211_PERM_ADDR(wcn->hw, wcn->addresses.addr); + } + + ret = wcn36xx_platform_get_resources(wcn, pdev); + if (ret) + goto out_wq; + + wcn36xx_init_ieee80211(wcn); + ret = ieee80211_register_hw(wcn->hw); + if (ret) + goto out_unmap; + + return 0; + +out_unmap: + iounmap(wcn->mmio); +out_wq: + ieee80211_free_hw(hw); +out_err: + return ret; +} +static int wcn36xx_remove(struct platform_device *pdev) +{ + struct ieee80211_hw *hw = platform_get_drvdata(pdev); + struct wcn36xx *wcn = hw->priv; + wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove"); + + mutex_destroy(&wcn->pm_mutex); + mutex_destroy(&wcn->smd_mutex); + + ieee80211_unregister_hw(hw); + iounmap(wcn->mmio); + ieee80211_free_hw(hw); + + return 0; +} +static const struct platform_device_id wcn36xx_platform_id_table[] = { + { + .name = "wcn36xx", + .driver_data = 0 + }, + {} +}; +MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table); + +static struct platform_driver wcn36xx_driver = { + .probe = wcn36xx_probe, + .remove = wcn36xx_remove, + .driver = { + .name = "wcn36xx", + .owner = THIS_MODULE, + }, + .id_table = wcn36xx_platform_id_table, +}; + +static int __init wcn36xx_init(void) +{ + platform_driver_register(&wcn36xx_driver); + return 0; +} +module_init(wcn36xx_init); + +static void __exit wcn36xx_exit(void) +{ + platform_driver_unregister(&wcn36xx_driver); +} +module_exit(wcn36xx_exit); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com"); +MODULE_FIRMWARE(WLAN_NV_FILE); -- 1.8.2.2