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linux/linux-5.18.11/drivers/net/wireless/ath/wcn36xx/main.c

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/*
* Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
*
* 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/platform_device.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/rpmsg.h>
#include <linux/soc/qcom/smem_state.h>
#include <linux/soc/qcom/wcnss_ctrl.h>
#include <net/ipv6.h>
#include "wcn36xx.h"
#include "testmode.h"
unsigned int wcn36xx_dbg_mask;
module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
MODULE_PARM_DESC(debug_mask, "Debugging mask");
#define CHAN2G(_freq, _idx) { \
.band = NL80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_idx), \
.max_power = 25, \
}
#define CHAN5G(_freq, _idx, _phy_val) { \
.band = NL80211_BAND_5GHZ, \
.center_freq = (_freq), \
.hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_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, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
CHAN5G(5680, 136, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
CHAN5G(5720, 144, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
CHAN5G(5825, 165, 0)
};
#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 |
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 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(150),
.tx_params = IEEE80211_HT_MCS_TX_DEFINED,
}
}
};
#ifdef CONFIG_PM
static const struct wiphy_wowlan_support wowlan_support = {
.flags = WIPHY_WOWLAN_ANY |
WIPHY_WOWLAN_MAGIC_PKT |
WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
};
#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 const char * const wcn36xx_caps_names[] = {
"MCC", /* 0 */
"P2P", /* 1 */
"DOT11AC", /* 2 */
"SLM_SESSIONIZATION", /* 3 */
"DOT11AC_OPMODE", /* 4 */
"SAP32STA", /* 5 */
"TDLS", /* 6 */
"P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
"WLANACTIVE_OFFLOAD", /* 8 */
"BEACON_OFFLOAD", /* 9 */
"SCAN_OFFLOAD", /* 10 */
"ROAM_OFFLOAD", /* 11 */
"BCN_MISS_OFFLOAD", /* 12 */
"STA_POWERSAVE", /* 13 */
"STA_ADVANCED_PWRSAVE", /* 14 */
"AP_UAPSD", /* 15 */
"AP_DFS", /* 16 */
"BLOCKACK", /* 17 */
"PHY_ERR", /* 18 */
"BCN_FILTER", /* 19 */
"RTT", /* 20 */
"RATECTRL", /* 21 */
"WOW", /* 22 */
"WLAN_ROAM_SCAN_OFFLOAD", /* 23 */
"SPECULATIVE_PS_POLL", /* 24 */
"SCAN_SCH", /* 25 */
"IBSS_HEARTBEAT_OFFLOAD", /* 26 */
"WLAN_SCAN_OFFLOAD", /* 27 */
"WLAN_PERIODIC_TX_PTRN", /* 28 */
"ADVANCE_TDLS", /* 29 */
"BATCH_SCAN", /* 30 */
"FW_IN_TX_PATH", /* 31 */
"EXTENDED_NSOFFLOAD_SLOT", /* 32 */
"CH_SWITCH_V1", /* 33 */
"HT40_OBSS_SCAN", /* 34 */
"UPDATE_CHANNEL_LIST", /* 35 */
"WLAN_MCADDR_FLT", /* 36 */
"WLAN_CH144", /* 37 */
"NAN", /* 38 */
"TDLS_SCAN_COEXISTENCE", /* 39 */
"LINK_LAYER_STATS_MEAS", /* 40 */
"MU_MIMO", /* 41 */
"EXTENDED_SCAN", /* 42 */
"DYNAMIC_WMM_PS", /* 43 */
"MAC_SPOOFED_SCAN", /* 44 */
"BMU_ERROR_GENERIC_RECOVERY", /* 45 */
"DISA", /* 46 */
"FW_STATS", /* 47 */
"WPS_PRBRSP_TMPL", /* 48 */
"BCN_IE_FLT_DELTA", /* 49 */
"TDLS_OFF_CHANNEL", /* 51 */
"RTT3", /* 52 */
"MGMT_FRAME_LOGGING", /* 53 */
"ENHANCED_TXBD_COMPLETION", /* 54 */
"LOGGING_ENHANCEMENT", /* 55 */
"EXT_SCAN_ENHANCED", /* 56 */
"MEMORY_DUMP_SUPPORTED", /* 57 */
"PER_PKT_STATS_SUPPORTED", /* 58 */
"EXT_LL_STAT", /* 60 */
"WIFI_CONFIG", /* 61 */
"ANTENNA_DIVERSITY_SELECTION", /* 62 */
};
static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
{
if (x >= ARRAY_SIZE(wcn36xx_caps_names))
return "UNKNOWN";
return wcn36xx_caps_names[x];
}
static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
{
int i;
for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
if (get_feat_caps(wcn->fw_feat_caps, i))
wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i));
}
}
static int wcn36xx_start(struct ieee80211_hw *hw)
{
struct wcn36xx *wcn = hw->priv;
int ret;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
/* SMD initialization */
ret = wcn36xx_smd_open(wcn);
if (ret) {
wcn36xx_err("Failed to open smd channel: %d\n", 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_err("Failed to alloc DXE mempool: %d\n", ret);
goto out_smd_close;
}
ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
if (ret) {
wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
goto out_free_dxe_pool;
}
ret = wcn36xx_smd_load_nv(wcn);
if (ret) {
wcn36xx_err("Failed to push NV to chip\n");
goto out_free_dxe_ctl;
}
ret = wcn36xx_smd_start(wcn);
if (ret) {
wcn36xx_err("Failed to start chip\n");
goto out_free_dxe_ctl;
}
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\n");
else
wcn36xx_feat_caps_info(wcn);
}
/* DMA channel initialization */
ret = wcn36xx_dxe_init(wcn);
if (ret) {
wcn36xx_err("DXE init failed\n");
goto out_smd_stop;
}
wcn36xx_debugfs_init(wcn);
INIT_LIST_HEAD(&wcn->vif_list);
spin_lock_init(&wcn->dxe_lock);
spin_lock_init(&wcn->survey_lock);
return 0;
out_smd_stop:
wcn36xx_smd_stop(wcn);
out_free_dxe_ctl:
wcn36xx_dxe_free_ctl_blks(wcn);
out_free_dxe_pool:
wcn36xx_dxe_free_mem_pools(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\n");
mutex_lock(&wcn->scan_lock);
if (wcn->scan_req) {
struct cfg80211_scan_info scan_info = {
.aborted = true,
};
ieee80211_scan_completed(wcn->hw, &scan_info);
}
wcn->scan_req = NULL;
mutex_unlock(&wcn->scan_lock);
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);
}
static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable)
{
struct ieee80211_vif *vif = NULL;
struct wcn36xx_vif *tmp;
list_for_each_entry(tmp, &wcn->vif_list, list) {
vif = wcn36xx_priv_to_vif(tmp);
if (enable && !wcn->sw_scan) {
if (vif->bss_conf.ps) /* ps allowed ? */
wcn36xx_pmc_enter_bmps_state(wcn, vif);
} else {
wcn36xx_pmc_exit_bmps_state(wcn, vif);
}
}
}
static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
{
struct ieee80211_vif *vif = NULL;
struct wcn36xx_vif *tmp;
struct ieee80211_supported_band *band;
struct ieee80211_channel *channel = NULL;
unsigned long flags;
int i, j;
for (i = 0; i < ARRAY_SIZE(wcn->hw->wiphy->bands); i++) {
band = wcn->hw->wiphy->bands[i];
if (!band)
break;
for (j = 0; j < band->n_channels; j++) {
if (HW_VALUE_CHANNEL(band->channels[j].hw_value) == ch) {
channel = &band->channels[j];
break;
}
}
if (channel)
break;
}
if (!channel) {
wcn36xx_err("Cannot tune to channel %d\n", ch);
return;
}
spin_lock_irqsave(&wcn->survey_lock, flags);
wcn->band = band;
wcn->channel = channel;
spin_unlock_irqrestore(&wcn->survey_lock, flags);
list_for_each_entry(tmp, &wcn->vif_list, list) {
vif = wcn36xx_priv_to_vif(tmp);
wcn36xx_smd_switch_channel(wcn, vif, ch);
}
return;
}
static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
{
struct wcn36xx *wcn = hw->priv;
int ret;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
mutex_lock(&wcn->conf_mutex);
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
int ch = WCN36XX_HW_CHANNEL(wcn);
wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
ch);
if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) {
/* If channel is the initial operating channel, we may
* want to receive/transmit regular data packets, then
* simply stop the scan session and exit PS mode.
*/
if (wcn->sw_scan_channel)
wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
if (wcn->sw_scan_init) {
wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
wcn->sw_scan_vif);
}
} else if (wcn->sw_scan) {
/* A scan is ongoing, do not change the operating
* channel, but start a scan session on the channel.
*/
if (wcn->sw_scan_channel)
wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
if (!wcn->sw_scan_init) {
/* This can fail if we are unable to notify the
* operating channel.
*/
ret = wcn36xx_smd_init_scan(wcn,
HAL_SYS_MODE_SCAN,
wcn->sw_scan_vif);
if (ret) {
mutex_unlock(&wcn->conf_mutex);
return -EIO;
}
}
wcn36xx_smd_start_scan(wcn, ch);
} else {
wcn36xx_change_opchannel(wcn, ch);
}
}
if (changed & IEEE80211_CONF_CHANGE_PS)
wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS);
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
if (hw->conf.flags & IEEE80211_CONF_IDLE)
wcn36xx_smd_enter_imps(wcn);
else
wcn36xx_smd_exit_imps(wcn);
}
mutex_unlock(&wcn->conf_mutex);
return 0;
}
static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
unsigned int changed,
unsigned int *total, u64 multicast)
{
struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
struct wcn36xx *wcn = hw->priv;
struct wcn36xx_vif *tmp;
struct ieee80211_vif *vif = NULL;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
mutex_lock(&wcn->conf_mutex);
*total &= FIF_ALLMULTI;
fp = (void *)(unsigned long)multicast;
list_for_each_entry(tmp, &wcn->vif_list, list) {
vif = wcn36xx_priv_to_vif(tmp);
/* FW handles MC filtering only when connected as STA */
if (*total & FIF_ALLMULTI)
wcn36xx_smd_set_mc_list(wcn, vif, NULL);
else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
wcn36xx_smd_set_mc_list(wcn, vif, fp);
}
mutex_unlock(&wcn->conf_mutex);
kfree(fp);
}
static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
struct netdev_hw_addr_list *mc_list)
{
struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
struct netdev_hw_addr *ha;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
if (!fp) {
wcn36xx_err("Out of memory setting filters.\n");
return 0;
}
fp->mc_addr_count = 0;
/* update multicast filtering parameters */
if (netdev_hw_addr_list_count(mc_list) <=
WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
netdev_hw_addr_list_for_each(ha, mc_list) {
memcpy(fp->mc_addr[fp->mc_addr_count],
ha->addr, ETH_ALEN);
fp->mc_addr_count++;
}
}
return (u64)(unsigned long)fp;
}
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 = wcn36xx_sta_to_priv(control->sta);
if (wcn36xx_start_tx(wcn, sta_priv, skb))
ieee80211_free_txskb(wcn->hw, 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_vif *vif_priv = wcn36xx_vif_to_priv(vif);
struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
int ret = 0;
u8 key[WLAN_MAX_KEY_LEN];
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
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);
mutex_lock(&wcn->conf_mutex);
switch (key_conf->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
break;
case WLAN_CIPHER_SUITE_WEP104:
vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
break;
case WLAN_CIPHER_SUITE_CCMP:
vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
break;
case WLAN_CIPHER_SUITE_TKIP:
vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
break;
default:
wcn36xx_err("Unsupported key type 0x%x\n",
key_conf->cipher);
ret = -EOPNOTSUPP;
goto out;
}
switch (cmd) {
case SET_KEY:
if (WCN36XX_HAL_ED_TKIP == vif_priv->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_config_sta(wcn, vif, sta);
}
wcn36xx_smd_set_stakey(wcn,
vif_priv->encrypt_type,
key_conf->keyidx,
key_conf->keylen,
key,
get_sta_index(vif, sta_priv));
} else {
wcn36xx_smd_set_bsskey(wcn,
vif_priv->encrypt_type,
vif_priv->bss_index,
key_conf->keyidx,
key_conf->keylen,
key);
if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
(WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
list_for_each_entry(sta_priv,
&vif_priv->sta_list, list) {
sta_priv->is_data_encrypted = true;
wcn36xx_smd_set_stakey(wcn,
vif_priv->encrypt_type,
key_conf->keyidx,
key_conf->keylen,
key,
get_sta_index(vif, sta_priv));
}
}
}
break;
case DISABLE_KEY:
if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
wcn36xx_smd_remove_bsskey(wcn,
vif_priv->encrypt_type,
vif_priv->bss_index,
key_conf->keyidx);
vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
} else {
sta_priv->is_data_encrypted = false;
/* do not remove key if disassociated */
if (sta_priv->aid)
wcn36xx_smd_remove_stakey(wcn,
vif_priv->encrypt_type,
key_conf->keyidx,
get_sta_index(vif, sta_priv));
}
break;
default:
wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
ret = -EOPNOTSUPP;
goto out;
}
out:
mutex_unlock(&wcn->conf_mutex);
return ret;
}
static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_scan_request *hw_req)
{
struct wcn36xx *wcn = hw->priv;
if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
/* fallback to mac80211 software scan */
return 1;
}
/* Firmware scan offload is limited to 48 channels, fallback to
* software driven scanning otherwise.
*/
if (hw_req->req.n_channels > 48) {
wcn36xx_warn("Offload scan aborted, n_channels=%u",
hw_req->req.n_channels);
return 1;
}
mutex_lock(&wcn->scan_lock);
if (wcn->scan_req) {
mutex_unlock(&wcn->scan_lock);
return -EBUSY;
}
wcn->scan_aborted = false;
wcn->scan_req = &hw_req->req;
mutex_unlock(&wcn->scan_lock);
wcn36xx_smd_update_channel_list(wcn, &hw_req->req);
return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
}
static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wcn36xx *wcn = hw->priv;
mutex_lock(&wcn->scan_lock);
wcn->scan_aborted = true;
mutex_unlock(&wcn->scan_lock);
if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
/* ieee80211_scan_completed will be called on FW scan
* indication */
wcn36xx_smd_stop_hw_scan(wcn);
}
}
static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct wcn36xx *wcn = hw->priv;
struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_start");
wcn->sw_scan = true;
wcn->sw_scan_vif = vif;
wcn->sw_scan_channel = 0;
if (vif_priv->sta_assoc)
wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
else
wcn->sw_scan_opchannel = 0;
}
static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wcn36xx *wcn = hw->priv;
wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_complete");
/* ensure that any scan session is finished */
if (wcn->sw_scan_channel)
wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
if (wcn->sw_scan_init) {
wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
wcn->sw_scan_vif);
}
wcn->sw_scan = false;
wcn->sw_scan_opchannel = 0;
}
static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
enum nl80211_band band)
{
int i, size;
u16 *rates_table;
struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
u32 rates = sta->supp_rates[band];
memset(&sta_priv->supported_rates, 0,
sizeof(sta_priv->supported_rates));
sta_priv->supported_rates.op_rate_mode = STA_11n;
size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
rates_table = sta_priv->supported_rates.dsss_rates;
if (band == NL80211_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(sta_priv->supported_rates.ofdm_rates);
rates_table = sta_priv->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) {
BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
sizeof(sta_priv->supported_rates.supported_mcs_set));
memcpy(sta_priv->supported_rates.supported_mcs_set,
sta->ht_cap.mcs.rx_mask,
sizeof(sta->ht_cap.mcs.rx_mask));
}
if (sta->vht_cap.vht_supported) {
sta_priv->supported_rates.op_rate_mode = STA_11ac;
sta_priv->supported_rates.vht_rx_mcs_map =
sta->vht_cap.vht_mcs.rx_mcs_map;
sta_priv->supported_rates.vht_tx_mcs_map =
sta->vht_cap.vht_mcs.tx_mcs_map;
}
}
void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
{
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
};
rates->op_rate_mode = STA_11n;
memcpy(rates->dsss_rates, dsss_rates,
sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
memcpy(rates->ofdm_rates, ofdm_rates,
sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
rates->supported_mcs_set[0] = 0xFF;
}
void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates)
{
rates->op_rate_mode = STA_11ac;
rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
}
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;
struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
vif, changed);
mutex_lock(&wcn->conf_mutex);
if (changed & BSS_CHANGED_BEACON_INFO) {
wcn36xx_dbg(WCN36XX_DBG_MAC,
"mac bss changed dtim period %d\n",
bss_conf->dtim_period);
vif_priv->dtim_period = bss_conf->dtim_period;
}
if (changed & BSS_CHANGED_BSSID) {
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
bss_conf->bssid);
if (!is_zero_ether_addr(bss_conf->bssid)) {
vif_priv->is_joining = true;
vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
WCN36XX_HAL_LINK_PREASSOC_STATE);
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 {
vif_priv->is_joining = false;
wcn36xx_smd_delete_bss(wcn, vif);
wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
WCN36XX_HAL_LINK_IDLE_STATE);
vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
}
}
if (changed & BSS_CHANGED_SSID) {
wcn36xx_dbg(WCN36XX_DBG_MAC,
"mac bss changed ssid\n");
wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
bss_conf->ssid, bss_conf->ssid_len);
vif_priv->ssid.length = bss_conf->ssid_len;
memcpy(&vif_priv->ssid.ssid,
bss_conf->ssid,
bss_conf->ssid_len);
}
if (changed & BSS_CHANGED_ASSOC) {
vif_priv->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\n",
bss_conf->bssid,
vif->addr,
bss_conf->aid);
vif_priv->sta_assoc = true;
/*
* Holding conf_mutex ensures mutal exclusion with
* wcn36xx_sta_remove() and as such ensures that sta
* won't be freed while we're operating on it. As such
* we do not need to hold the rcu_read_lock().
*/
sta = ieee80211_find_sta(vif, bss_conf->bssid);
if (!sta) {
wcn36xx_err("sta %pM is not found\n",
bss_conf->bssid);
goto out;
}
sta_priv = wcn36xx_sta_to_priv(sta);
wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
vif->addr,
WCN36XX_HAL_LINK_POSTASSOC_STATE);
wcn36xx_smd_config_bss(wcn, vif, sta,
bss_conf->bssid,
true);
sta_priv->aid = bss_conf->aid;
/*
* config_sta must be called from because this is the
* place where AID is available.
*/
wcn36xx_smd_config_sta(wcn, vif, sta);
if (vif->type == NL80211_IFTYPE_STATION)
wcn36xx_smd_add_beacon_filter(wcn, vif);
wcn36xx_enable_keep_alive_null_packet(wcn, vif);
} else {
wcn36xx_dbg(WCN36XX_DBG_MAC,
"disassociated bss %pM vif %pM AID=%d\n",
bss_conf->bssid,
vif->addr,
bss_conf->aid);
vif_priv->sta_assoc = false;
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\n");
skb = ieee80211_proberesp_get(hw, vif);
if (!skb) {
wcn36xx_err("failed to alloc probereq skb\n");
goto out;
}
wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
dev_kfree_skb(skb);
}
if (changed & BSS_CHANGED_BEACON_ENABLED ||
changed & BSS_CHANGED_BEACON) {
wcn36xx_dbg(WCN36XX_DBG_MAC,
"mac bss changed beacon enabled %d\n",
bss_conf->enable_beacon);
if (bss_conf->enable_beacon) {
vif_priv->dtim_period = bss_conf->dtim_period;
vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
wcn36xx_smd_config_bss(wcn, vif, NULL,
vif->addr, false);
skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
&tim_len);
if (!skb) {
wcn36xx_err("failed to alloc beacon skb\n");
goto out;
}
wcn36xx_smd_send_beacon(wcn, vif, 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_delete_bss(wcn, vif);
wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
WCN36XX_HAL_LINK_IDLE_STATE);
}
}
out:
mutex_unlock(&wcn->conf_mutex);
}
/* 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\n", value);
mutex_lock(&wcn->conf_mutex);
wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
mutex_unlock(&wcn->conf_mutex);
return 0;
}
static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wcn36xx *wcn = hw->priv;
struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
mutex_lock(&wcn->conf_mutex);
list_del(&vif_priv->list);
wcn36xx_smd_delete_sta_self(wcn, vif->addr);
mutex_unlock(&wcn->conf_mutex);
}
static int wcn36xx_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wcn36xx *wcn = hw->priv;
struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
vif, vif->type);
if (!(NL80211_IFTYPE_STATION == vif->type ||
NL80211_IFTYPE_AP == vif->type ||
NL80211_IFTYPE_ADHOC == vif->type ||
NL80211_IFTYPE_MESH_POINT == vif->type)) {
wcn36xx_warn("Unsupported interface type requested: %d\n",
vif->type);
return -EOPNOTSUPP;
}
mutex_lock(&wcn->conf_mutex);
vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
INIT_LIST_HEAD(&vif_priv->sta_list);
list_add(&vif_priv->list, &wcn->vif_list);
wcn36xx_smd_add_sta_self(wcn, vif);
mutex_unlock(&wcn->conf_mutex);
return 0;
}
static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct wcn36xx *wcn = hw->priv;
struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
vif, sta->addr);
mutex_lock(&wcn->conf_mutex);
spin_lock_init(&sta_priv->ampdu_lock);
sta_priv->vif = vif_priv;
list_add(&sta_priv->list, &vif_priv->sta_list);
/*
* For STA mode HW will be configured on BSS_CHANGED_ASSOC because
* at this stage AID is not available yet.
*/
if (NL80211_IFTYPE_STATION != vif->type) {
wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
sta_priv->aid = sta->aid;
wcn36xx_smd_config_sta(wcn, vif, sta);
}
mutex_unlock(&wcn->conf_mutex);
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 = wcn36xx_sta_to_priv(sta);
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
vif, sta->addr, sta_priv->sta_index);
mutex_lock(&wcn->conf_mutex);
list_del(&sta_priv->list);
wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
sta_priv->vif = NULL;
mutex_unlock(&wcn->conf_mutex);
return 0;
}
#ifdef CONFIG_PM
static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn)
{
struct wcn36xx_vif *vif_priv = NULL;
struct ieee80211_vif *vif = NULL;
list_for_each_entry(vif_priv, &wcn->vif_list, list) {
if (vif_priv->sta_assoc) {
vif = wcn36xx_priv_to_vif(vif_priv);
break;
}
}
return vif;
}
static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
{
struct wcn36xx *wcn = hw->priv;
struct ieee80211_vif *vif = NULL;
int ret = 0;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
mutex_lock(&wcn->conf_mutex);
vif = wcn36xx_get_first_assoc_vif(wcn);
if (vif) {
ret = wcn36xx_smd_arp_offload(wcn, vif, true);
if (ret)
goto out;
ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true);
if (ret)
goto out;
ret = wcn36xx_smd_gtk_offload(wcn, vif, true);
if (ret)
goto out;
ret = wcn36xx_smd_set_power_params(wcn, true);
if (ret)
goto out;
ret = wcn36xx_smd_wlan_host_suspend_ind(wcn);
}
/* Disable IRQ, we don't want to handle any packet before mac80211 is
* resumed and ready to receive packets.
*/
disable_irq(wcn->tx_irq);
disable_irq(wcn->rx_irq);
out:
mutex_unlock(&wcn->conf_mutex);
return ret;
}
static int wcn36xx_resume(struct ieee80211_hw *hw)
{
struct wcn36xx *wcn = hw->priv;
struct ieee80211_vif *vif = NULL;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
mutex_lock(&wcn->conf_mutex);
vif = wcn36xx_get_first_assoc_vif(wcn);
if (vif) {
wcn36xx_smd_host_resume(wcn);
wcn36xx_smd_set_power_params(wcn, false);
wcn36xx_smd_gtk_offload_get_info(wcn, vif);
wcn36xx_smd_gtk_offload(wcn, vif, false);
wcn36xx_smd_ipv6_ns_offload(wcn, vif, false);
wcn36xx_smd_arp_offload(wcn, vif, false);
}
enable_irq(wcn->tx_irq);
enable_irq(wcn->rx_irq);
mutex_unlock(&wcn->conf_mutex);
return 0;
}
static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_gtk_rekey_data *data)
{
struct wcn36xx *wcn = hw->priv;
struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
mutex_lock(&wcn->conf_mutex);
memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN);
memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN);
vif_priv->rekey_data.replay_ctr =
cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
vif_priv->rekey_data.valid = true;
mutex_unlock(&wcn->conf_mutex);
}
#endif
static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_ampdu_params *params)
{
struct wcn36xx *wcn = hw->priv;
struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
struct ieee80211_sta *sta = params->sta;
enum ieee80211_ampdu_mlme_action action = params->action;
u16 tid = params->tid;
u16 *ssn = &params->ssn;
int ret = 0;
int session;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
action, tid);
mutex_lock(&wcn->conf_mutex);
switch (action) {
case IEEE80211_AMPDU_RX_START:
sta_priv->tid = tid;
session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
get_sta_index(vif, sta_priv));
if (session < 0) {
ret = session;
goto out;
}
wcn36xx_smd_add_ba(wcn, session);
break;
case IEEE80211_AMPDU_RX_STOP:
wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv));
break;
case IEEE80211_AMPDU_TX_START:
spin_lock_bh(&sta_priv->ampdu_lock);
sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
spin_unlock_bh(&sta_priv->ampdu_lock);
/* Replace the mac80211 ssn with the firmware one */
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu ssn = %u\n", *ssn);
wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, ssn);
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu fw-ssn = %u\n", *ssn);
/* Start BA session */
session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
get_sta_index(vif, sta_priv));
if (session < 0) {
ret = session;
goto out;
}
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
spin_lock_bh(&sta_priv->ampdu_lock);
sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
spin_unlock_bh(&sta_priv->ampdu_lock);
break;
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
case IEEE80211_AMPDU_TX_STOP_CONT:
spin_lock_bh(&sta_priv->ampdu_lock);
sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
spin_unlock_bh(&sta_priv->ampdu_lock);
wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv));
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
default:
wcn36xx_err("Unknown AMPDU action\n");
}
out:
mutex_unlock(&wcn->conf_mutex);
return ret;
}
#if IS_ENABLED(CONFIG_IPV6)
static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct inet6_dev *idev)
{
struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
struct inet6_ifaddr *ifa;
int idx = 0;
memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs));
read_lock_bh(&idev->lock);
list_for_each_entry(ifa, &idev->addr_list, if_list) {
vif_priv->target_ipv6_addrs[idx] = ifa->addr;
if (ifa->flags & IFA_F_TENTATIVE)
__set_bit(idx, vif_priv->tentative_addrs);
idx++;
if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX)
break;
wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr,
(ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL);
}
read_unlock_bh(&idev->lock);
vif_priv->num_target_ipv6_addrs = idx;
}
#endif
static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u32 queues, bool drop)
{
struct wcn36xx *wcn = hw->priv;
if (wcn36xx_dxe_tx_flush(wcn)) {
wcn36xx_err("Failed to flush hardware tx queues\n");
}
}
static int wcn36xx_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct wcn36xx *wcn = hw->priv;
struct ieee80211_supported_band *sband;
struct wcn36xx_chan_survey *chan_survey;
int band_idx;
unsigned long flags;
sband = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ];
band_idx = idx;
if (band_idx >= sband->n_channels) {
band_idx -= sband->n_channels;
sband = wcn->hw->wiphy->bands[NL80211_BAND_5GHZ];
}
if (!sband || band_idx >= sband->n_channels)
return -ENOENT;
spin_lock_irqsave(&wcn->survey_lock, flags);
chan_survey = &wcn->chan_survey[idx];
survey->channel = &sband->channels[band_idx];
survey->noise = chan_survey->rssi - chan_survey->snr;
survey->filled = 0;
if (chan_survey->rssi > -100 && chan_survey->rssi < 0)
survey->filled |= SURVEY_INFO_NOISE_DBM;
if (survey->channel == wcn->channel)
survey->filled |= SURVEY_INFO_IN_USE;
spin_unlock_irqrestore(&wcn->survey_lock, flags);
wcn36xx_dbg(WCN36XX_DBG_MAC,
"ch %d rssi %d snr %d noise %d filled %x freq %d\n",
HW_VALUE_CHANNEL(survey->channel->hw_value),
chan_survey->rssi, chan_survey->snr, survey->noise,
survey->filled, survey->channel->center_freq);
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,
.set_rekey_data = wcn36xx_set_rekey_data,
#endif
.config = wcn36xx_config,
.prepare_multicast = wcn36xx_prepare_multicast,
.configure_filter = wcn36xx_configure_filter,
.tx = wcn36xx_tx,
.set_key = wcn36xx_set_key,
.hw_scan = wcn36xx_hw_scan,
.cancel_hw_scan = wcn36xx_cancel_hw_scan,
.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,
#if IS_ENABLED(CONFIG_IPV6)
.ipv6_addr_change = wcn36xx_ipv6_addr_change,
#endif
.flush = wcn36xx_flush,
.get_survey = wcn36xx_get_survey,
CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
};
static void
wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap)
{
vht_cap->vht_supported = true;
vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
IEEE80211_VHT_CAP_SHORT_GI_80 |
IEEE80211_VHT_CAP_RXSTBC_1 |
IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
vht_cap->vht_mcs.rx_mcs_map =
cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 |
IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 |
IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
vht_cap->vht_mcs.rx_highest = cpu_to_le16(433);
vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest;
vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
}
static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
{
static const u32 cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
};
ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS);
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->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
if (wcn->rf_id != RF_IRIS_WCN3620)
wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
if (wcn->rf_id == RF_IRIS_WCN3680)
wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap);
wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
wcn->hw->wiphy->cipher_suites = cipher_suites;
wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
#ifdef CONFIG_PM
wcn->hw->wiphy->wowlan = &wowlan_support;
#endif
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);
wiphy_ext_feature_set(wcn->hw->wiphy,
NL80211_EXT_FEATURE_CQM_RSSI_LIST);
return 0;
}
static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
struct platform_device *pdev)
{
struct device_node *mmio_node;
struct device_node *iris_node;
int index;
int ret;
/* Set TX IRQ */
ret = platform_get_irq_byname(pdev, "tx");
if (ret < 0)
return ret;
wcn->tx_irq = ret;
/* Set RX IRQ */
ret = platform_get_irq_byname(pdev, "rx");
if (ret < 0)
return ret;
wcn->rx_irq = ret;
/* Acquire SMSM tx enable handle */
wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
"tx-enable", &wcn->tx_enable_state_bit);
if (IS_ERR(wcn->tx_enable_state)) {
wcn36xx_err("failed to get tx-enable state\n");
return PTR_ERR(wcn->tx_enable_state);
}
/* Acquire SMSM tx rings empty handle */
wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
"tx-rings-empty", &wcn->tx_rings_empty_state_bit);
if (IS_ERR(wcn->tx_rings_empty_state)) {
wcn36xx_err("failed to get tx-rings-empty state\n");
return PTR_ERR(wcn->tx_rings_empty_state);
}
mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
if (!mmio_node) {
wcn36xx_err("failed to acquire qcom,mmio reference\n");
return -EINVAL;
}
wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
/* Map the CCU memory */
index = of_property_match_string(mmio_node, "reg-names", "ccu");
wcn->ccu_base = of_iomap(mmio_node, index);
if (!wcn->ccu_base) {
wcn36xx_err("failed to map ccu memory\n");
ret = -ENOMEM;
goto put_mmio_node;
}
/* Map the DXE memory */
index = of_property_match_string(mmio_node, "reg-names", "dxe");
wcn->dxe_base = of_iomap(mmio_node, index);
if (!wcn->dxe_base) {
wcn36xx_err("failed to map dxe memory\n");
ret = -ENOMEM;
goto unmap_ccu;
}
/* External RF module */
iris_node = of_get_child_by_name(mmio_node, "iris");
if (iris_node) {
if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
wcn->rf_id = RF_IRIS_WCN3620;
if (of_device_is_compatible(iris_node, "qcom,wcn3660") ||
of_device_is_compatible(iris_node, "qcom,wcn3660b"))
wcn->rf_id = RF_IRIS_WCN3660;
if (of_device_is_compatible(iris_node, "qcom,wcn3680"))
wcn->rf_id = RF_IRIS_WCN3680;
of_node_put(iris_node);
}
of_node_put(mmio_node);
return 0;
unmap_ccu:
iounmap(wcn->ccu_base);
put_mmio_node:
of_node_put(mmio_node);
return ret;
}
static int wcn36xx_probe(struct platform_device *pdev)
{
struct ieee80211_hw *hw;
struct wcn36xx *wcn;
void *wcnss;
int ret;
const u8 *addr;
int n_channels;
wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
wcnss = dev_get_drvdata(pdev->dev.parent);
hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
if (!hw) {
wcn36xx_err("failed to alloc hw\n");
ret = -ENOMEM;
goto out_err;
}
platform_set_drvdata(pdev, hw);
wcn = hw->priv;
wcn->hw = hw;
wcn->dev = &pdev->dev;
wcn->first_boot = true;
mutex_init(&wcn->conf_mutex);
mutex_init(&wcn->hal_mutex);
mutex_init(&wcn->scan_lock);
__skb_queue_head_init(&wcn->amsdu);
wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
if (!wcn->hal_buf) {
ret = -ENOMEM;
goto out_wq;
}
n_channels = wcn_band_2ghz.n_channels + wcn_band_5ghz.n_channels;
wcn->chan_survey = devm_kmalloc(wcn->dev, n_channels, GFP_KERNEL);
if (!wcn->chan_survey) {
ret = -ENOMEM;
goto out_wq;
}
ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
if (ret < 0) {
wcn36xx_err("failed to set DMA mask: %d\n", ret);
goto out_wq;
}
wcn->nv_file = WLAN_NV_FILE;
ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file);
if (ret < 0 && ret != -EINVAL) {
wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret);
goto out_wq;
}
wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
if (IS_ERR(wcn->smd_channel)) {
wcn36xx_err("failed to open WLAN_CTRL channel\n");
ret = PTR_ERR(wcn->smd_channel);
goto out_wq;
}
addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
if (addr && ret != ETH_ALEN) {
wcn36xx_err("invalid local-mac-address\n");
ret = -EINVAL;
goto out_destroy_ept;
} else if (addr) {
wcn36xx_info("mac address: %pM\n", addr);
SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
}
ret = wcn36xx_platform_get_resources(wcn, pdev);
if (ret)
goto out_destroy_ept;
wcn36xx_init_ieee80211(wcn);
ret = ieee80211_register_hw(wcn->hw);
if (ret)
goto out_unmap;
return 0;
out_unmap:
iounmap(wcn->ccu_base);
iounmap(wcn->dxe_base);
out_destroy_ept:
rpmsg_destroy_ept(wcn->smd_channel);
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\n");
release_firmware(wcn->nv);
ieee80211_unregister_hw(hw);
qcom_smem_state_put(wcn->tx_enable_state);
qcom_smem_state_put(wcn->tx_rings_empty_state);
rpmsg_destroy_ept(wcn->smd_channel);
iounmap(wcn->dxe_base);
iounmap(wcn->ccu_base);
__skb_queue_purge(&wcn->amsdu);
mutex_destroy(&wcn->hal_mutex);
ieee80211_free_hw(hw);
return 0;
}
static const struct of_device_id wcn36xx_of_match[] = {
{ .compatible = "qcom,wcnss-wlan" },
{}
};
MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
static struct platform_driver wcn36xx_driver = {
.probe = wcn36xx_probe,
.remove = wcn36xx_remove,
.driver = {
.name = "wcn36xx",
.of_match_table = wcn36xx_of_match,
},
};
module_platform_driver(wcn36xx_driver);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
MODULE_FIRMWARE(WLAN_NV_FILE);
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