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linux-pinenote/drivers/net/wireless/ath/wcn36xx/main.c
Bob Copeland e26dc173a6 wcn36xx: initiate TX BA sessions 
Currently, wcn36xx only asks for a TX BA session if it has
already established one for RX.  Thus, two wcn36xx devices cannot
do a-mpdu between themselves since they both wait for the other
to go first.  Fix this by starting a BA session after a few QoS
data frames have been sent to a STA.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-23 19:12:12 +02:00

1114 lines
29 KiB
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 "wcn36xx.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 = 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,
}
}
};
#ifdef CONFIG_PM
static const struct wiphy_wowlan_support wowlan_support = {
.flags = WIPHY_WOWLAN_ANY
};
#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 */
};
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_info("FW Cap %s\n", wcn36xx_get_cap_name(i));
}
}
static void wcn36xx_detect_chip_version(struct wcn36xx *wcn)
{
if (get_feat_caps(wcn->fw_feat_caps, DOT11AC)) {
wcn36xx_info("Chip is 3680\n");
wcn->chip_version = WCN36XX_CHIP_3680;
} else {
wcn36xx_info("Chip is 3660\n");
wcn->chip_version = WCN36XX_CHIP_3660;
}
}
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;
}
wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
if (!wcn->hal_buf) {
wcn36xx_err("Failed to allocate smd buf\n");
ret = -ENOMEM;
goto out_free_dxe_ctl;
}
ret = wcn36xx_smd_load_nv(wcn);
if (ret) {
wcn36xx_err("Failed to push NV to chip\n");
goto out_free_smd_buf;
}
ret = wcn36xx_smd_start(wcn);
if (ret) {
wcn36xx_err("Failed to start chip\n");
goto out_free_smd_buf;
}
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);
}
wcn36xx_detect_chip_version(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);
return 0;
out_smd_stop:
wcn36xx_smd_stop(wcn);
out_free_smd_buf:
kfree(wcn->hal_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\n");
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->hal_buf);
}
static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
{
struct wcn36xx *wcn = hw->priv;
struct ieee80211_vif *vif = NULL;
struct wcn36xx_vif *tmp;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
int ch = WCN36XX_HW_CHANNEL(wcn);
wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
ch);
list_for_each_entry(tmp, &wcn->vif_list, list) {
vif = container_of((void *)tmp,
struct ieee80211_vif,
drv_priv);
wcn36xx_smd_switch_channel(wcn, vif, 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\n");
*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;
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 = (struct wcn36xx_vif *)vif->drv_priv;
struct wcn36xx_sta *sta_priv = vif_priv->sta;
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);
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_WEP40;
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_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,
key_conf->keyidx,
key_conf->keylen,
key);
if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
(WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
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)) {
wcn36xx_smd_remove_bsskey(wcn,
vif_priv->encrypt_type,
key_conf->keyidx);
} 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:
return ret;
}
static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct wcn36xx *wcn = hw->priv;
wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
wcn36xx_smd_start_scan(wcn);
}
static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct wcn36xx *wcn = hw->priv;
wcn36xx_smd_end_scan(wcn);
wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
}
static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
enum ieee80211_band band)
{
int i, size;
u16 *rates_table;
struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
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 == 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(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));
}
}
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;
}
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 = (struct wcn36xx_vif *)vif->drv_priv;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
vif, changed);
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_PS) {
wcn36xx_dbg(WCN36XX_DBG_MAC,
"mac bss PS set %d\n",
bss_conf->ps);
if (bss_conf->ps) {
wcn36xx_pmc_enter_bmps_state(wcn, vif);
} else {
wcn36xx_pmc_exit_bmps_state(wcn, vif);
}
}
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 = 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 {
vif_priv->is_joining = false;
wcn36xx_smd_delete_bss(wcn, vif);
}
}
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);
rcu_read_lock();
sta = ieee80211_find_sta(vif, bss_conf->bssid);
if (!sta) {
wcn36xx_err("sta %pM is not found\n",
bss_conf->bssid);
rcu_read_unlock();
goto out;
}
sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
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);
rcu_read_unlock();
} else {
wcn36xx_dbg(WCN36XX_DBG_MAC,
"disassociated bss %pM vif %pM AID=%d\n",
bss_conf->bssid,
vif->addr,
bss_conf->aid);
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 = 0xff;
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_set_link_st(wcn, vif->addr, vif->addr,
WCN36XX_HAL_LINK_IDLE_STATE);
wcn36xx_smd_delete_bss(wcn, vif);
}
}
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\n", 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;
struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
list_del(&vif_priv->list);
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;
struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
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;
}
list_add(&vif_priv->list, &wcn->vif_list);
wcn36xx_smd_add_sta_self(wcn, vif);
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 = (struct wcn36xx_vif *)vif->drv_priv;
struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
vif, sta->addr);
spin_lock_init(&sta_priv->ampdu_lock);
vif_priv->sta = sta_priv;
sta_priv->vif = vif_priv;
/*
* 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);
}
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_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_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\n",
vif, sta->addr, sta_priv->sta_index);
wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
vif_priv->sta = NULL;
sta_priv->vif = NULL;
return 0;
}
#ifdef CONFIG_PM
static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
{
struct wcn36xx *wcn = hw->priv;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
flush_workqueue(wcn->hal_ind_wq);
wcn36xx_smd_set_power_params(wcn, true);
return 0;
}
static int wcn36xx_resume(struct ieee80211_hw *hw)
{
struct wcn36xx *wcn = hw->priv;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
flush_workqueue(wcn->hal_ind_wq);
wcn36xx_smd_set_power_params(wcn, false);
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\n",
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));
break;
case IEEE80211_AMPDU_RX_STOP:
wcn36xx_smd_del_ba(wcn, tid, 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);
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
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);
wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
get_sta_index(vif, sta_priv));
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);
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
default:
wcn36xx_err("Unknown AMPDU action\n");
}
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_WEP40,
WLAN_CIPHER_SUITE_WEP104,
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->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
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->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_err("failed to get tx_irq\n");
return -ENOENT;
}
wcn->tx_irq = res->start;
/* Set RX IRQ */
res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
"wcnss_wlanrx_irq");
if (!res) {
wcn36xx_err("failed to get rx_irq\n");
return -ENOENT;
}
wcn->rx_irq = res->start;
/* Map the memory */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"wcnss_mmio");
if (!res) {
wcn36xx_err("failed to get mmio\n");
return -ENOENT;
}
wcn->mmio = ioremap(res->start, resource_size(res));
if (!wcn->mmio) {
wcn36xx_err("failed to map io memory\n");
return -ENOMEM;
}
return 0;
}
static int wcn36xx_probe(struct platform_device *pdev)
{
struct ieee80211_hw *hw;
struct wcn36xx *wcn;
int ret;
u8 addr[ETH_ALEN];
wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
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->ctrl_ops = pdev->dev.platform_data;
mutex_init(&wcn->hal_mutex);
if (!wcn->ctrl_ops->get_hw_mac(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_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\n");
release_firmware(wcn->nv);
mutex_destroy(&wcn->hal_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",
},
.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);
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