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linux_dsm_epyc7002/drivers/net/wireless/realtek/rtw88/main.c
Yan-Hsuan Chuang 4136214f7c rtw88: add BT co-existence support 
Both RTL8822BE/RTL8822CE are WiFi + BT combo chips. Since
WiFi and BT use 2.4GHz to transmit, it is important to
make sure they run concurrently without interfering each
other. To achieve this, WiFi driver requires a mechanism
to collaborate with BT, whether they share the antenna(s)
or not.

The final decision made by the co-existence mechanism is
to choose a proper strategy, or called "tdma/table", and
inform either firmware or hardware of the strategy.
To choose a strategy, co-existence mechanism needs to
have enough information from WiFi and BT.

BT information is provided through firmware C2H.
The contents describe the current status of BT, such as
if BT is connected or is idle, or the profile that is
being used.

WiFi information can be provided by WiFi itself. The WiFi
driver will call various of "notify" functions each time
the state of WiFi changed, such as WiFi is going to switch
channel or is connected. Also WiFi driver can know if it
shares antenna with BT by reading efuse content. Antenna
configuration of the module will finally get a different
strategy.

Upon receiving any information from WiFi or BT, the WiFi
driver will run the co-existence mechanism immediately.
It will set the RF antenna configuration according to the
strategy through the TDMA H2C to firmware and a hardware
table. Based on the tdma/table, WiFi + BT should work with
each other, and having a better user experience.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-08-06 15:42:13 +03:00

1282 lines
33 KiB
C
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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright(c) 2018-2019 Realtek Corporation
*/
#include "main.h"
#include "regd.h"
#include "fw.h"
#include "ps.h"
#include "sec.h"
#include "mac.h"
#include "coex.h"
#include "phy.h"
#include "reg.h"
#include "efuse.h"
#include "debug.h"
static bool rtw_fw_support_lps;
unsigned int rtw_debug_mask;
EXPORT_SYMBOL(rtw_debug_mask);
module_param_named(support_lps, rtw_fw_support_lps, bool, 0644);
module_param_named(debug_mask, rtw_debug_mask, uint, 0644);
MODULE_PARM_DESC(support_lps, "Set Y to enable Leisure Power Save support, to turn radio off between beacons");
MODULE_PARM_DESC(debug_mask, "Debugging mask");
static struct ieee80211_channel rtw_channeltable_2g[] = {
{.center_freq = 2412, .hw_value = 1,},
{.center_freq = 2417, .hw_value = 2,},
{.center_freq = 2422, .hw_value = 3,},
{.center_freq = 2427, .hw_value = 4,},
{.center_freq = 2432, .hw_value = 5,},
{.center_freq = 2437, .hw_value = 6,},
{.center_freq = 2442, .hw_value = 7,},
{.center_freq = 2447, .hw_value = 8,},
{.center_freq = 2452, .hw_value = 9,},
{.center_freq = 2457, .hw_value = 10,},
{.center_freq = 2462, .hw_value = 11,},
{.center_freq = 2467, .hw_value = 12,},
{.center_freq = 2472, .hw_value = 13,},
{.center_freq = 2484, .hw_value = 14,},
};
static struct ieee80211_channel rtw_channeltable_5g[] = {
{.center_freq = 5180, .hw_value = 36,},
{.center_freq = 5200, .hw_value = 40,},
{.center_freq = 5220, .hw_value = 44,},
{.center_freq = 5240, .hw_value = 48,},
{.center_freq = 5260, .hw_value = 52,},
{.center_freq = 5280, .hw_value = 56,},
{.center_freq = 5300, .hw_value = 60,},
{.center_freq = 5320, .hw_value = 64,},
{.center_freq = 5500, .hw_value = 100,},
{.center_freq = 5520, .hw_value = 104,},
{.center_freq = 5540, .hw_value = 108,},
{.center_freq = 5560, .hw_value = 112,},
{.center_freq = 5580, .hw_value = 116,},
{.center_freq = 5600, .hw_value = 120,},
{.center_freq = 5620, .hw_value = 124,},
{.center_freq = 5640, .hw_value = 128,},
{.center_freq = 5660, .hw_value = 132,},
{.center_freq = 5680, .hw_value = 136,},
{.center_freq = 5700, .hw_value = 140,},
{.center_freq = 5745, .hw_value = 149,},
{.center_freq = 5765, .hw_value = 153,},
{.center_freq = 5785, .hw_value = 157,},
{.center_freq = 5805, .hw_value = 161,},
{.center_freq = 5825, .hw_value = 165,
.flags = IEEE80211_CHAN_NO_HT40MINUS},
};
static struct ieee80211_rate rtw_ratetable[] = {
{.bitrate = 10, .hw_value = 0x00,},
{.bitrate = 20, .hw_value = 0x01,},
{.bitrate = 55, .hw_value = 0x02,},
{.bitrate = 110, .hw_value = 0x03,},
{.bitrate = 60, .hw_value = 0x04,},
{.bitrate = 90, .hw_value = 0x05,},
{.bitrate = 120, .hw_value = 0x06,},
{.bitrate = 180, .hw_value = 0x07,},
{.bitrate = 240, .hw_value = 0x08,},
{.bitrate = 360, .hw_value = 0x09,},
{.bitrate = 480, .hw_value = 0x0a,},
{.bitrate = 540, .hw_value = 0x0b,},
};
static struct ieee80211_supported_band rtw_band_2ghz = {
.band = NL80211_BAND_2GHZ,
.channels = rtw_channeltable_2g,
.n_channels = ARRAY_SIZE(rtw_channeltable_2g),
.bitrates = rtw_ratetable,
.n_bitrates = ARRAY_SIZE(rtw_ratetable),
.ht_cap = {0},
.vht_cap = {0},
};
static struct ieee80211_supported_band rtw_band_5ghz = {
.band = NL80211_BAND_5GHZ,
.channels = rtw_channeltable_5g,
.n_channels = ARRAY_SIZE(rtw_channeltable_5g),
/* 5G has no CCK rates */
.bitrates = rtw_ratetable + 4,
.n_bitrates = ARRAY_SIZE(rtw_ratetable) - 4,
.ht_cap = {0},
.vht_cap = {0},
};
struct rtw_watch_dog_iter_data {
struct rtw_vif *rtwvif;
bool active;
u8 assoc_cnt;
};
static void rtw_vif_watch_dog_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct rtw_watch_dog_iter_data *iter_data = data;
struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv;
if (vif->type == NL80211_IFTYPE_STATION) {
if (vif->bss_conf.assoc) {
iter_data->assoc_cnt++;
iter_data->rtwvif = rtwvif;
}
if (rtwvif->stats.tx_cnt > RTW_LPS_THRESHOLD ||
rtwvif->stats.rx_cnt > RTW_LPS_THRESHOLD)
iter_data->active = true;
} else {
/* only STATION mode can enter lps */
iter_data->active = true;
}
rtwvif->stats.tx_unicast = 0;
rtwvif->stats.rx_unicast = 0;
rtwvif->stats.tx_cnt = 0;
rtwvif->stats.rx_cnt = 0;
}
/* process TX/RX statistics periodically for hardware,
* the information helps hardware to enhance performance
*/
static void rtw_watch_dog_work(struct work_struct *work)
{
struct rtw_dev *rtwdev = container_of(work, struct rtw_dev,
watch_dog_work.work);
struct rtw_watch_dog_iter_data data = {};
bool busy_traffic = rtw_flag_check(rtwdev, RTW_FLAG_BUSY_TRAFFIC);
if (!rtw_flag_check(rtwdev, RTW_FLAG_RUNNING))
return;
ieee80211_queue_delayed_work(rtwdev->hw, &rtwdev->watch_dog_work,
RTW_WATCH_DOG_DELAY_TIME);
if (rtwdev->stats.tx_cnt > 100 || rtwdev->stats.rx_cnt > 100)
rtw_flag_set(rtwdev, RTW_FLAG_BUSY_TRAFFIC);
else
rtw_flag_clear(rtwdev, RTW_FLAG_BUSY_TRAFFIC);
if (busy_traffic != rtw_flag_check(rtwdev, RTW_FLAG_BUSY_TRAFFIC))
rtw_coex_wl_status_change_notify(rtwdev);
/* reset tx/rx statictics */
rtwdev->stats.tx_unicast = 0;
rtwdev->stats.rx_unicast = 0;
rtwdev->stats.tx_cnt = 0;
rtwdev->stats.rx_cnt = 0;
/* use atomic version to avoid taking local->iflist_mtx mutex */
rtw_iterate_vifs_atomic(rtwdev, rtw_vif_watch_dog_iter, &data);
/* fw supports only one station associated to enter lps, if there are
* more than two stations associated to the AP, then we can not enter
* lps, because fw does not handle the overlapped beacon interval
*/
if (rtw_fw_support_lps &&
data.rtwvif && !data.active && data.assoc_cnt == 1)
rtw_enter_lps(rtwdev, data.rtwvif);
if (rtw_flag_check(rtwdev, RTW_FLAG_SCANNING))
return;
rtw_phy_dynamic_mechanism(rtwdev);
rtwdev->watch_dog_cnt++;
}
static void rtw_c2h_work(struct work_struct *work)
{
struct rtw_dev *rtwdev = container_of(work, struct rtw_dev, c2h_work);
struct sk_buff *skb, *tmp;
skb_queue_walk_safe(&rtwdev->c2h_queue, skb, tmp) {
skb_unlink(skb, &rtwdev->c2h_queue);
rtw_fw_c2h_cmd_handle(rtwdev, skb);
dev_kfree_skb_any(skb);
}
}
void rtw_get_channel_params(struct cfg80211_chan_def *chandef,
struct rtw_channel_params *chan_params)
{
struct ieee80211_channel *channel = chandef->chan;
enum nl80211_chan_width width = chandef->width;
u8 *cch_by_bw = chan_params->cch_by_bw;
u32 primary_freq, center_freq;
u8 center_chan;
u8 bandwidth = RTW_CHANNEL_WIDTH_20;
u8 primary_chan_idx = 0;
u8 i;
center_chan = channel->hw_value;
primary_freq = channel->center_freq;
center_freq = chandef->center_freq1;
/* assign the center channel used while 20M bw is selected */
cch_by_bw[RTW_CHANNEL_WIDTH_20] = channel->hw_value;
switch (width) {
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
bandwidth = RTW_CHANNEL_WIDTH_20;
primary_chan_idx = 0;
break;
case NL80211_CHAN_WIDTH_40:
bandwidth = RTW_CHANNEL_WIDTH_40;
if (primary_freq > center_freq) {
primary_chan_idx = 1;
center_chan -= 2;
} else {
primary_chan_idx = 2;
center_chan += 2;
}
break;
case NL80211_CHAN_WIDTH_80:
bandwidth = RTW_CHANNEL_WIDTH_80;
if (primary_freq > center_freq) {
if (primary_freq - center_freq == 10) {
primary_chan_idx = 1;
center_chan -= 2;
} else {
primary_chan_idx = 3;
center_chan -= 6;
}
/* assign the center channel used
* while 40M bw is selected
*/
cch_by_bw[RTW_CHANNEL_WIDTH_40] = center_chan + 4;
} else {
if (center_freq - primary_freq == 10) {
primary_chan_idx = 2;
center_chan += 2;
} else {
primary_chan_idx = 4;
center_chan += 6;
}
/* assign the center channel used
* while 40M bw is selected
*/
cch_by_bw[RTW_CHANNEL_WIDTH_40] = center_chan - 4;
}
break;
default:
center_chan = 0;
break;
}
chan_params->center_chan = center_chan;
chan_params->bandwidth = bandwidth;
chan_params->primary_chan_idx = primary_chan_idx;
/* assign the center channel used while current bw is selected */
cch_by_bw[bandwidth] = center_chan;
for (i = bandwidth + 1; i <= RTW_MAX_CHANNEL_WIDTH; i++)
cch_by_bw[i] = 0;
}
void rtw_set_channel(struct rtw_dev *rtwdev)
{
struct ieee80211_hw *hw = rtwdev->hw;
struct rtw_hal *hal = &rtwdev->hal;
struct rtw_chip_info *chip = rtwdev->chip;
struct rtw_channel_params ch_param;
u8 center_chan, bandwidth, primary_chan_idx;
u8 i;
rtw_get_channel_params(&hw->conf.chandef, &ch_param);
if (WARN(ch_param.center_chan == 0, "Invalid channel\n"))
return;
center_chan = ch_param.center_chan;
bandwidth = ch_param.bandwidth;
primary_chan_idx = ch_param.primary_chan_idx;
hal->current_band_width = bandwidth;
hal->current_channel = center_chan;
hal->current_band_type = center_chan > 14 ? RTW_BAND_5G : RTW_BAND_2G;
for (i = RTW_CHANNEL_WIDTH_20; i <= RTW_MAX_CHANNEL_WIDTH; i++)
hal->cch_by_bw[i] = ch_param.cch_by_bw[i];
chip->ops->set_channel(rtwdev, center_chan, bandwidth, primary_chan_idx);
if (hal->current_band_type == RTW_BAND_5G) {
rtw_coex_switchband_notify(rtwdev, COEX_SWITCH_TO_5G);
} else {
if (rtw_flag_check(rtwdev, RTW_FLAG_SCANNING))
rtw_coex_switchband_notify(rtwdev, COEX_SWITCH_TO_24G);
else
rtw_coex_switchband_notify(rtwdev, COEX_SWITCH_TO_24G_NOFORSCAN);
}
rtw_phy_set_tx_power_level(rtwdev, center_chan);
}
static void rtw_vif_write_addr(struct rtw_dev *rtwdev, u32 start, u8 *addr)
{
int i;
for (i = 0; i < ETH_ALEN; i++)
rtw_write8(rtwdev, start + i, addr[i]);
}
void rtw_vif_port_config(struct rtw_dev *rtwdev,
struct rtw_vif *rtwvif,
u32 config)
{
u32 addr, mask;
if (config & PORT_SET_MAC_ADDR) {
addr = rtwvif->conf->mac_addr.addr;
rtw_vif_write_addr(rtwdev, addr, rtwvif->mac_addr);
}
if (config & PORT_SET_BSSID) {
addr = rtwvif->conf->bssid.addr;
rtw_vif_write_addr(rtwdev, addr, rtwvif->bssid);
}
if (config & PORT_SET_NET_TYPE) {
addr = rtwvif->conf->net_type.addr;
mask = rtwvif->conf->net_type.mask;
rtw_write32_mask(rtwdev, addr, mask, rtwvif->net_type);
}
if (config & PORT_SET_AID) {
addr = rtwvif->conf->aid.addr;
mask = rtwvif->conf->aid.mask;
rtw_write32_mask(rtwdev, addr, mask, rtwvif->aid);
}
if (config & PORT_SET_BCN_CTRL) {
addr = rtwvif->conf->bcn_ctrl.addr;
mask = rtwvif->conf->bcn_ctrl.mask;
rtw_write8_mask(rtwdev, addr, mask, rtwvif->bcn_ctrl);
}
}
static u8 hw_bw_cap_to_bitamp(u8 bw_cap)
{
u8 bw = 0;
switch (bw_cap) {
case EFUSE_HW_CAP_IGNORE:
case EFUSE_HW_CAP_SUPP_BW80:
bw |= BIT(RTW_CHANNEL_WIDTH_80);
/* fall through */
case EFUSE_HW_CAP_SUPP_BW40:
bw |= BIT(RTW_CHANNEL_WIDTH_40);
/* fall through */
default:
bw |= BIT(RTW_CHANNEL_WIDTH_20);
break;
}
return bw;
}
static void rtw_hw_config_rf_ant_num(struct rtw_dev *rtwdev, u8 hw_ant_num)
{
struct rtw_hal *hal = &rtwdev->hal;
if (hw_ant_num == EFUSE_HW_CAP_IGNORE ||
hw_ant_num >= hal->rf_path_num)
return;
switch (hw_ant_num) {
case 1:
hal->rf_type = RF_1T1R;
hal->rf_path_num = 1;
hal->antenna_tx = BB_PATH_A;
hal->antenna_rx = BB_PATH_A;
break;
default:
WARN(1, "invalid hw configuration from efuse\n");
break;
}
}
static u64 get_vht_ra_mask(struct ieee80211_sta *sta)
{
u64 ra_mask = 0;
u16 mcs_map = le16_to_cpu(sta->vht_cap.vht_mcs.rx_mcs_map);
u8 vht_mcs_cap;
int i, nss;
/* 4SS, every two bits for MCS7/8/9 */
for (i = 0, nss = 12; i < 4; i++, mcs_map >>= 2, nss += 10) {
vht_mcs_cap = mcs_map & 0x3;
switch (vht_mcs_cap) {
case 2: /* MCS9 */
ra_mask |= 0x3ffULL << nss;
break;
case 1: /* MCS8 */
ra_mask |= 0x1ffULL << nss;
break;
case 0: /* MCS7 */
ra_mask |= 0x0ffULL << nss;
break;
default:
break;
}
}
return ra_mask;
}
static u8 get_rate_id(u8 wireless_set, enum rtw_bandwidth bw_mode, u8 tx_num)
{
u8 rate_id = 0;
switch (wireless_set) {
case WIRELESS_CCK:
rate_id = RTW_RATEID_B_20M;
break;
case WIRELESS_OFDM:
rate_id = RTW_RATEID_G;
break;
case WIRELESS_CCK | WIRELESS_OFDM:
rate_id = RTW_RATEID_BG;
break;
case WIRELESS_OFDM | WIRELESS_HT:
if (tx_num == 1)
rate_id = RTW_RATEID_GN_N1SS;
else if (tx_num == 2)
rate_id = RTW_RATEID_GN_N2SS;
else if (tx_num == 3)
rate_id = RTW_RATEID_ARFR5_N_3SS;
break;
case WIRELESS_CCK | WIRELESS_OFDM | WIRELESS_HT:
if (bw_mode == RTW_CHANNEL_WIDTH_40) {
if (tx_num == 1)
rate_id = RTW_RATEID_BGN_40M_1SS;
else if (tx_num == 2)
rate_id = RTW_RATEID_BGN_40M_2SS;
else if (tx_num == 3)
rate_id = RTW_RATEID_ARFR5_N_3SS;
else if (tx_num == 4)
rate_id = RTW_RATEID_ARFR7_N_4SS;
} else {
if (tx_num == 1)
rate_id = RTW_RATEID_BGN_20M_1SS;
else if (tx_num == 2)
rate_id = RTW_RATEID_BGN_20M_2SS;
else if (tx_num == 3)
rate_id = RTW_RATEID_ARFR5_N_3SS;
else if (tx_num == 4)
rate_id = RTW_RATEID_ARFR7_N_4SS;
}
break;
case WIRELESS_OFDM | WIRELESS_VHT:
if (tx_num == 1)
rate_id = RTW_RATEID_ARFR1_AC_1SS;
else if (tx_num == 2)
rate_id = RTW_RATEID_ARFR0_AC_2SS;
else if (tx_num == 3)
rate_id = RTW_RATEID_ARFR4_AC_3SS;
else if (tx_num == 4)
rate_id = RTW_RATEID_ARFR6_AC_4SS;
break;
case WIRELESS_CCK | WIRELESS_OFDM | WIRELESS_VHT:
if (bw_mode >= RTW_CHANNEL_WIDTH_80) {
if (tx_num == 1)
rate_id = RTW_RATEID_ARFR1_AC_1SS;
else if (tx_num == 2)
rate_id = RTW_RATEID_ARFR0_AC_2SS;
else if (tx_num == 3)
rate_id = RTW_RATEID_ARFR4_AC_3SS;
else if (tx_num == 4)
rate_id = RTW_RATEID_ARFR6_AC_4SS;
} else {
if (tx_num == 1)
rate_id = RTW_RATEID_ARFR2_AC_2G_1SS;
else if (tx_num == 2)
rate_id = RTW_RATEID_ARFR3_AC_2G_2SS;
else if (tx_num == 3)
rate_id = RTW_RATEID_ARFR4_AC_3SS;
else if (tx_num == 4)
rate_id = RTW_RATEID_ARFR6_AC_4SS;
}
break;
default:
break;
}
return rate_id;
}
#define RA_MASK_CCK_RATES 0x0000f
#define RA_MASK_OFDM_RATES 0x00ff0
#define RA_MASK_HT_RATES_1SS (0xff000ULL << 0)
#define RA_MASK_HT_RATES_2SS (0xff000ULL << 8)
#define RA_MASK_HT_RATES_3SS (0xff000ULL << 16)
#define RA_MASK_HT_RATES (RA_MASK_HT_RATES_1SS | \
RA_MASK_HT_RATES_2SS | \
RA_MASK_HT_RATES_3SS)
#define RA_MASK_VHT_RATES_1SS (0x3ff000ULL << 0)
#define RA_MASK_VHT_RATES_2SS (0x3ff000ULL << 10)
#define RA_MASK_VHT_RATES_3SS (0x3ff000ULL << 20)
#define RA_MASK_VHT_RATES (RA_MASK_VHT_RATES_1SS | \
RA_MASK_VHT_RATES_2SS | \
RA_MASK_VHT_RATES_3SS)
#define RA_MASK_CCK_IN_HT 0x00005
#define RA_MASK_CCK_IN_VHT 0x00005
#define RA_MASK_OFDM_IN_VHT 0x00010
#define RA_MASK_OFDM_IN_HT_2G 0x00010
#define RA_MASK_OFDM_IN_HT_5G 0x00030
void rtw_update_sta_info(struct rtw_dev *rtwdev, struct rtw_sta_info *si)
{
struct ieee80211_sta *sta = si->sta;
struct rtw_efuse *efuse = &rtwdev->efuse;
struct rtw_hal *hal = &rtwdev->hal;
u8 rssi_level;
u8 wireless_set;
u8 bw_mode;
u8 rate_id;
u8 rf_type = RF_1T1R;
u8 stbc_en = 0;
u8 ldpc_en = 0;
u8 tx_num = 1;
u64 ra_mask = 0;
bool is_vht_enable = false;
bool is_support_sgi = false;
if (sta->vht_cap.vht_supported) {
is_vht_enable = true;
ra_mask |= get_vht_ra_mask(sta);
if (sta->vht_cap.cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
stbc_en = VHT_STBC_EN;
if (sta->vht_cap.cap & IEEE80211_VHT_CAP_RXLDPC)
ldpc_en = VHT_LDPC_EN;
if (sta->vht_cap.cap & IEEE80211_VHT_CAP_SHORT_GI_80)
is_support_sgi = true;
} else if (sta->ht_cap.ht_supported) {
ra_mask |= (sta->ht_cap.mcs.rx_mask[NL80211_BAND_5GHZ] << 20) |
(sta->ht_cap.mcs.rx_mask[NL80211_BAND_2GHZ] << 12);
if (sta->ht_cap.cap & IEEE80211_HT_CAP_RX_STBC)
stbc_en = HT_STBC_EN;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING)
ldpc_en = HT_LDPC_EN;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20 ||
sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)
is_support_sgi = true;
}
if (hal->current_band_type == RTW_BAND_5G) {
ra_mask |= (u64)sta->supp_rates[NL80211_BAND_5GHZ] << 4;
if (sta->vht_cap.vht_supported) {
ra_mask &= RA_MASK_VHT_RATES | RA_MASK_OFDM_IN_VHT;
wireless_set = WIRELESS_OFDM | WIRELESS_VHT;
} else if (sta->ht_cap.ht_supported) {
ra_mask &= RA_MASK_HT_RATES | RA_MASK_OFDM_IN_HT_5G;
wireless_set = WIRELESS_OFDM | WIRELESS_HT;
} else {
wireless_set = WIRELESS_OFDM;
}
} else if (hal->current_band_type == RTW_BAND_2G) {
ra_mask |= sta->supp_rates[NL80211_BAND_2GHZ];
if (sta->vht_cap.vht_supported) {
ra_mask &= RA_MASK_VHT_RATES | RA_MASK_CCK_IN_VHT |
RA_MASK_OFDM_IN_VHT;
wireless_set = WIRELESS_CCK | WIRELESS_OFDM |
WIRELESS_HT | WIRELESS_VHT;
} else if (sta->ht_cap.ht_supported) {
ra_mask &= RA_MASK_HT_RATES | RA_MASK_CCK_IN_HT |
RA_MASK_OFDM_IN_HT_2G;
wireless_set = WIRELESS_CCK | WIRELESS_OFDM |
WIRELESS_HT;
} else if (sta->supp_rates[0] <= 0xf) {
wireless_set = WIRELESS_CCK;
} else {
wireless_set = WIRELESS_CCK | WIRELESS_OFDM;
}
} else {
rtw_err(rtwdev, "Unknown band type\n");
wireless_set = 0;
}
if (efuse->hw_cap.nss == 1) {
ra_mask &= RA_MASK_VHT_RATES_1SS;
ra_mask &= RA_MASK_HT_RATES_1SS;
}
switch (sta->bandwidth) {
case IEEE80211_STA_RX_BW_80:
bw_mode = RTW_CHANNEL_WIDTH_80;
break;
case IEEE80211_STA_RX_BW_40:
bw_mode = RTW_CHANNEL_WIDTH_40;
break;
default:
bw_mode = RTW_CHANNEL_WIDTH_20;
break;
}
if (sta->vht_cap.vht_supported && ra_mask & 0xffc00000) {
tx_num = 2;
rf_type = RF_2T2R;
} else if (sta->ht_cap.ht_supported && ra_mask & 0xfff00000) {
tx_num = 2;
rf_type = RF_2T2R;
}
rate_id = get_rate_id(wireless_set, bw_mode, tx_num);
if (wireless_set != WIRELESS_CCK) {
rssi_level = si->rssi_level;
if (rssi_level == 0)
ra_mask &= 0xffffffffffffffffULL;
else if (rssi_level == 1)
ra_mask &= 0xfffffffffffffff0ULL;
else if (rssi_level == 2)
ra_mask &= 0xffffffffffffefe0ULL;
else if (rssi_level == 3)
ra_mask &= 0xffffffffffffcfc0ULL;
else if (rssi_level == 4)
ra_mask &= 0xffffffffffff8f80ULL;
else if (rssi_level >= 5)
ra_mask &= 0xffffffffffff0f00ULL;
}
si->bw_mode = bw_mode;
si->stbc_en = stbc_en;
si->ldpc_en = ldpc_en;
si->rf_type = rf_type;
si->wireless_set = wireless_set;
si->sgi_enable = is_support_sgi;
si->vht_enable = is_vht_enable;
si->ra_mask = ra_mask;
si->rate_id = rate_id;
rtw_fw_send_ra_info(rtwdev, si);
}
static int rtw_power_on(struct rtw_dev *rtwdev)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct rtw_fw_state *fw = &rtwdev->fw;
bool wifi_only;
int ret;
ret = rtw_hci_setup(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to setup hci\n");
goto err;
}
/* power on MAC before firmware downloaded */
ret = rtw_mac_power_on(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to power on mac\n");
goto err;
}
wait_for_completion(&fw->completion);
if (!fw->firmware) {
ret = -EINVAL;
rtw_err(rtwdev, "failed to load firmware\n");
goto err;
}
ret = rtw_download_firmware(rtwdev, fw);
if (ret) {
rtw_err(rtwdev, "failed to download firmware\n");
goto err_off;
}
/* config mac after firmware downloaded */
ret = rtw_mac_init(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to configure mac\n");
goto err_off;
}
chip->ops->phy_set_param(rtwdev);
ret = rtw_hci_start(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to start hci\n");
goto err_off;
}
wifi_only = !rtwdev->efuse.btcoex;
rtw_coex_power_on_setting(rtwdev);
rtw_coex_init_hw_config(rtwdev, wifi_only);
return 0;
err_off:
rtw_mac_power_off(rtwdev);
err:
return ret;
}
int rtw_core_start(struct rtw_dev *rtwdev)
{
int ret;
ret = rtw_power_on(rtwdev);
if (ret)
return ret;
rtw_sec_enable_sec_engine(rtwdev);
/* rcr reset after powered on */
rtw_write32(rtwdev, REG_RCR, rtwdev->hal.rcr);
ieee80211_queue_delayed_work(rtwdev->hw, &rtwdev->watch_dog_work,
RTW_WATCH_DOG_DELAY_TIME);
rtw_flag_set(rtwdev, RTW_FLAG_RUNNING);
return 0;
}
static void rtw_power_off(struct rtw_dev *rtwdev)
{
rtwdev->hci.ops->stop(rtwdev);
rtw_mac_power_off(rtwdev);
}
void rtw_core_stop(struct rtw_dev *rtwdev)
{
struct rtw_coex *coex = &rtwdev->coex;
rtw_flag_clear(rtwdev, RTW_FLAG_RUNNING);
rtw_flag_clear(rtwdev, RTW_FLAG_FW_RUNNING);
cancel_delayed_work_sync(&rtwdev->watch_dog_work);
cancel_delayed_work_sync(&coex->bt_relink_work);
cancel_delayed_work_sync(&coex->bt_reenable_work);
cancel_delayed_work_sync(&coex->defreeze_work);
rtw_power_off(rtwdev);
}
static void rtw_init_ht_cap(struct rtw_dev *rtwdev,
struct ieee80211_sta_ht_cap *ht_cap)
{
struct rtw_efuse *efuse = &rtwdev->efuse;
ht_cap->ht_supported = true;
ht_cap->cap = 0;
ht_cap->cap |= IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_MAX_AMSDU |
IEEE80211_HT_CAP_LDPC_CODING |
(1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
if (efuse->hw_cap.bw & BIT(RTW_CHANNEL_WIDTH_40))
ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_DSSSCCK40 |
IEEE80211_HT_CAP_SGI_40;
ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
if (efuse->hw_cap.nss > 1) {
ht_cap->mcs.rx_mask[0] = 0xFF;
ht_cap->mcs.rx_mask[1] = 0xFF;
ht_cap->mcs.rx_mask[4] = 0x01;
ht_cap->mcs.rx_highest = cpu_to_le16(300);
} else {
ht_cap->mcs.rx_mask[0] = 0xFF;
ht_cap->mcs.rx_mask[1] = 0x00;
ht_cap->mcs.rx_mask[4] = 0x01;
ht_cap->mcs.rx_highest = cpu_to_le16(150);
}
}
static void rtw_init_vht_cap(struct rtw_dev *rtwdev,
struct ieee80211_sta_vht_cap *vht_cap)
{
struct rtw_efuse *efuse = &rtwdev->efuse;
u16 mcs_map;
__le16 highest;
if (efuse->hw_cap.ptcl != EFUSE_HW_CAP_IGNORE &&
efuse->hw_cap.ptcl != EFUSE_HW_CAP_PTCL_VHT)
return;
vht_cap->vht_supported = true;
vht_cap->cap = IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
IEEE80211_VHT_CAP_RXLDPC |
IEEE80211_VHT_CAP_SHORT_GI_80 |
IEEE80211_VHT_CAP_TXSTBC |
IEEE80211_VHT_CAP_RXSTBC_1 |
IEEE80211_VHT_CAP_HTC_VHT |
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
0;
mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
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;
if (efuse->hw_cap.nss > 1) {
highest = cpu_to_le16(780);
mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << 2;
} else {
highest = cpu_to_le16(390);
mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << 2;
}
vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
vht_cap->vht_mcs.rx_highest = highest;
vht_cap->vht_mcs.tx_highest = highest;
}
static void rtw_set_supported_band(struct ieee80211_hw *hw,
struct rtw_chip_info *chip)
{
struct rtw_dev *rtwdev = hw->priv;
struct ieee80211_supported_band *sband;
if (chip->band & RTW_BAND_2G) {
sband = kmemdup(&rtw_band_2ghz, sizeof(*sband), GFP_KERNEL);
if (!sband)
goto err_out;
if (chip->ht_supported)
rtw_init_ht_cap(rtwdev, &sband->ht_cap);
hw->wiphy->bands[NL80211_BAND_2GHZ] = sband;
}
if (chip->band & RTW_BAND_5G) {
sband = kmemdup(&rtw_band_5ghz, sizeof(*sband), GFP_KERNEL);
if (!sband)
goto err_out;
if (chip->ht_supported)
rtw_init_ht_cap(rtwdev, &sband->ht_cap);
if (chip->vht_supported)
rtw_init_vht_cap(rtwdev, &sband->vht_cap);
hw->wiphy->bands[NL80211_BAND_5GHZ] = sband;
}
return;
err_out:
rtw_err(rtwdev, "failed to set supported band\n");
kfree(sband);
}
static void rtw_unset_supported_band(struct ieee80211_hw *hw,
struct rtw_chip_info *chip)
{
kfree(hw->wiphy->bands[NL80211_BAND_2GHZ]);
kfree(hw->wiphy->bands[NL80211_BAND_5GHZ]);
}
static void rtw_load_firmware_cb(const struct firmware *firmware, void *context)
{
struct rtw_dev *rtwdev = context;
struct rtw_fw_state *fw = &rtwdev->fw;
if (!firmware)
rtw_err(rtwdev, "failed to request firmware\n");
fw->firmware = firmware;
complete_all(&fw->completion);
}
static int rtw_load_firmware(struct rtw_dev *rtwdev, const char *fw_name)
{
struct rtw_fw_state *fw = &rtwdev->fw;
int ret;
init_completion(&fw->completion);
ret = request_firmware_nowait(THIS_MODULE, true, fw_name, rtwdev->dev,
GFP_KERNEL, rtwdev, rtw_load_firmware_cb);
if (ret) {
rtw_err(rtwdev, "async firmware request failed\n");
return ret;
}
return 0;
}
static int rtw_chip_parameter_setup(struct rtw_dev *rtwdev)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct rtw_hal *hal = &rtwdev->hal;
struct rtw_efuse *efuse = &rtwdev->efuse;
int ret = 0;
switch (rtw_hci_type(rtwdev)) {
case RTW_HCI_TYPE_PCIE:
rtwdev->hci.rpwm_addr = 0x03d9;
break;
default:
rtw_err(rtwdev, "unsupported hci type\n");
return -EINVAL;
}
hal->chip_version = rtw_read32(rtwdev, REG_SYS_CFG1);
hal->fab_version = BIT_GET_VENDOR_ID(hal->chip_version) >> 2;
hal->cut_version = BIT_GET_CHIP_VER(hal->chip_version);
hal->mp_chip = (hal->chip_version & BIT_RTL_ID) ? 0 : 1;
if (hal->chip_version & BIT_RF_TYPE_ID) {
hal->rf_type = RF_2T2R;
hal->rf_path_num = 2;
hal->antenna_tx = BB_PATH_AB;
hal->antenna_rx = BB_PATH_AB;
} else {
hal->rf_type = RF_1T1R;
hal->rf_path_num = 1;
hal->antenna_tx = BB_PATH_A;
hal->antenna_rx = BB_PATH_A;
}
if (hal->fab_version == 2)
hal->fab_version = 1;
else if (hal->fab_version == 1)
hal->fab_version = 2;
efuse->physical_size = chip->phy_efuse_size;
efuse->logical_size = chip->log_efuse_size;
efuse->protect_size = chip->ptct_efuse_size;
/* default use ack */
rtwdev->hal.rcr |= BIT_VHT_DACK;
return ret;
}
static int rtw_chip_efuse_enable(struct rtw_dev *rtwdev)
{
struct rtw_fw_state *fw = &rtwdev->fw;
int ret;
ret = rtw_hci_setup(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to setup hci\n");
goto err;
}
ret = rtw_mac_power_on(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to power on mac\n");
goto err;
}
rtw_write8(rtwdev, REG_C2HEVT, C2H_HW_FEATURE_DUMP);
wait_for_completion(&fw->completion);
if (!fw->firmware) {
ret = -EINVAL;
rtw_err(rtwdev, "failed to load firmware\n");
goto err;
}
ret = rtw_download_firmware(rtwdev, fw);
if (ret) {
rtw_err(rtwdev, "failed to download firmware\n");
goto err_off;
}
return 0;
err_off:
rtw_mac_power_off(rtwdev);
err:
return ret;
}
static int rtw_dump_hw_feature(struct rtw_dev *rtwdev)
{
struct rtw_efuse *efuse = &rtwdev->efuse;
u8 hw_feature[HW_FEATURE_LEN];
u8 id;
u8 bw;
int i;
id = rtw_read8(rtwdev, REG_C2HEVT);
if (id != C2H_HW_FEATURE_REPORT) {
rtw_err(rtwdev, "failed to read hw feature report\n");
return -EBUSY;
}
for (i = 0; i < HW_FEATURE_LEN; i++)
hw_feature[i] = rtw_read8(rtwdev, REG_C2HEVT + 2 + i);
rtw_write8(rtwdev, REG_C2HEVT, 0);
bw = GET_EFUSE_HW_CAP_BW(hw_feature);
efuse->hw_cap.bw = hw_bw_cap_to_bitamp(bw);
efuse->hw_cap.hci = GET_EFUSE_HW_CAP_HCI(hw_feature);
efuse->hw_cap.nss = GET_EFUSE_HW_CAP_NSS(hw_feature);
efuse->hw_cap.ptcl = GET_EFUSE_HW_CAP_PTCL(hw_feature);
efuse->hw_cap.ant_num = GET_EFUSE_HW_CAP_ANT_NUM(hw_feature);
rtw_hw_config_rf_ant_num(rtwdev, efuse->hw_cap.ant_num);
if (efuse->hw_cap.nss == EFUSE_HW_CAP_IGNORE)
efuse->hw_cap.nss = rtwdev->hal.rf_path_num;
rtw_dbg(rtwdev, RTW_DBG_EFUSE,
"hw cap: hci=0x%02x, bw=0x%02x, ptcl=0x%02x, ant_num=%d, nss=%d\n",
efuse->hw_cap.hci, efuse->hw_cap.bw, efuse->hw_cap.ptcl,
efuse->hw_cap.ant_num, efuse->hw_cap.nss);
return 0;
}
static void rtw_chip_efuse_disable(struct rtw_dev *rtwdev)
{
rtw_hci_stop(rtwdev);
rtw_mac_power_off(rtwdev);
}
static int rtw_chip_efuse_info_setup(struct rtw_dev *rtwdev)
{
struct rtw_efuse *efuse = &rtwdev->efuse;
int ret;
mutex_lock(&rtwdev->mutex);
/* power on mac to read efuse */
ret = rtw_chip_efuse_enable(rtwdev);
if (ret)
goto out;
ret = rtw_parse_efuse_map(rtwdev);
if (ret)
goto out;
ret = rtw_dump_hw_feature(rtwdev);
if (ret)
goto out;
ret = rtw_check_supported_rfe(rtwdev);
if (ret)
goto out;
if (efuse->crystal_cap == 0xff)
efuse->crystal_cap = 0;
if (efuse->pa_type_2g == 0xff)
efuse->pa_type_2g = 0;
if (efuse->pa_type_5g == 0xff)
efuse->pa_type_5g = 0;
if (efuse->lna_type_2g == 0xff)
efuse->lna_type_2g = 0;
if (efuse->lna_type_5g == 0xff)
efuse->lna_type_5g = 0;
if (efuse->channel_plan == 0xff)
efuse->channel_plan = 0x7f;
if (efuse->rf_board_option == 0xff)
efuse->rf_board_option = 0;
if (efuse->bt_setting & BIT(0))
efuse->share_ant = true;
if (efuse->regd == 0xff)
efuse->regd = 0;
efuse->btcoex = (efuse->rf_board_option & 0xe0) == 0x20;
efuse->ext_pa_2g = efuse->pa_type_2g & BIT(4) ? 1 : 0;
efuse->ext_lna_2g = efuse->lna_type_2g & BIT(3) ? 1 : 0;
efuse->ext_pa_5g = efuse->pa_type_5g & BIT(0) ? 1 : 0;
efuse->ext_lna_2g = efuse->lna_type_5g & BIT(3) ? 1 : 0;
rtw_chip_efuse_disable(rtwdev);
out:
mutex_unlock(&rtwdev->mutex);
return ret;
}
static int rtw_chip_board_info_setup(struct rtw_dev *rtwdev)
{
struct rtw_hal *hal = &rtwdev->hal;
const struct rtw_rfe_def *rfe_def = rtw_get_rfe_def(rtwdev);
if (!rfe_def)
return -ENODEV;
rtw_phy_setup_phy_cond(rtwdev, 0);
rtw_phy_init_tx_power(rtwdev);
rtw_load_table(rtwdev, rfe_def->phy_pg_tbl);
rtw_load_table(rtwdev, rfe_def->txpwr_lmt_tbl);
rtw_phy_tx_power_by_rate_config(hal);
rtw_phy_tx_power_limit_config(hal);
return 0;
}
int rtw_chip_info_setup(struct rtw_dev *rtwdev)
{
int ret;
ret = rtw_chip_parameter_setup(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to setup chip parameters\n");
goto err_out;
}
ret = rtw_chip_efuse_info_setup(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to setup chip efuse info\n");
goto err_out;
}
ret = rtw_chip_board_info_setup(rtwdev);
if (ret) {
rtw_err(rtwdev, "failed to setup chip board info\n");
goto err_out;
}
return 0;
err_out:
return ret;
}
EXPORT_SYMBOL(rtw_chip_info_setup);
int rtw_core_init(struct rtw_dev *rtwdev)
{
struct rtw_coex *coex = &rtwdev->coex;
int ret;
INIT_LIST_HEAD(&rtwdev->rsvd_page_list);
timer_setup(&rtwdev->tx_report.purge_timer,
rtw_tx_report_purge_timer, 0);
INIT_DELAYED_WORK(&rtwdev->watch_dog_work, rtw_watch_dog_work);
INIT_DELAYED_WORK(&rtwdev->lps_work, rtw_lps_work);
INIT_DELAYED_WORK(&coex->bt_relink_work, rtw_coex_bt_relink_work);
INIT_DELAYED_WORK(&coex->bt_reenable_work, rtw_coex_bt_reenable_work);
INIT_DELAYED_WORK(&coex->defreeze_work, rtw_coex_defreeze_work);
INIT_WORK(&rtwdev->c2h_work, rtw_c2h_work);
skb_queue_head_init(&rtwdev->c2h_queue);
skb_queue_head_init(&rtwdev->coex.queue);
skb_queue_head_init(&rtwdev->tx_report.queue);
spin_lock_init(&rtwdev->dm_lock);
spin_lock_init(&rtwdev->rf_lock);
spin_lock_init(&rtwdev->h2c.lock);
spin_lock_init(&rtwdev->tx_report.q_lock);
mutex_init(&rtwdev->mutex);
mutex_init(&rtwdev->coex.mutex);
mutex_init(&rtwdev->hal.tx_power_mutex);
init_waitqueue_head(&rtwdev->coex.wait);
rtwdev->sec.total_cam_num = 32;
rtwdev->hal.current_channel = 1;
set_bit(RTW_BC_MC_MACID, rtwdev->mac_id_map);
mutex_lock(&rtwdev->mutex);
rtw_add_rsvd_page(rtwdev, RSVD_BEACON, false);
mutex_unlock(&rtwdev->mutex);
/* default rx filter setting */
rtwdev->hal.rcr = BIT_APP_FCS | BIT_APP_MIC | BIT_APP_ICV |
BIT_HTC_LOC_CTRL | BIT_APP_PHYSTS |
BIT_AB | BIT_AM | BIT_APM;
ret = rtw_load_firmware(rtwdev, rtwdev->chip->fw_name);
if (ret) {
rtw_warn(rtwdev, "no firmware loaded\n");
return ret;
}
return 0;
}
EXPORT_SYMBOL(rtw_core_init);
void rtw_core_deinit(struct rtw_dev *rtwdev)
{
struct rtw_fw_state *fw = &rtwdev->fw;
struct rtw_rsvd_page *rsvd_pkt, *tmp;
unsigned long flags;
if (fw->firmware)
release_firmware(fw->firmware);
spin_lock_irqsave(&rtwdev->tx_report.q_lock, flags);
skb_queue_purge(&rtwdev->tx_report.queue);
spin_unlock_irqrestore(&rtwdev->tx_report.q_lock, flags);
list_for_each_entry_safe(rsvd_pkt, tmp, &rtwdev->rsvd_page_list, list) {
list_del(&rsvd_pkt->list);
kfree(rsvd_pkt);
}
mutex_destroy(&rtwdev->mutex);
mutex_destroy(&rtwdev->coex.mutex);
mutex_destroy(&rtwdev->hal.tx_power_mutex);
}
EXPORT_SYMBOL(rtw_core_deinit);
int rtw_register_hw(struct rtw_dev *rtwdev, struct ieee80211_hw *hw)
{
int max_tx_headroom = 0;
int ret;
/* TODO: USB & SDIO may need extra room? */
max_tx_headroom = rtwdev->chip->tx_pkt_desc_sz;
hw->extra_tx_headroom = max_tx_headroom;
hw->queues = IEEE80211_NUM_ACS;
hw->sta_data_size = sizeof(struct rtw_sta_info);
hw->vif_data_size = sizeof(struct rtw_vif);
ieee80211_hw_set(hw, SIGNAL_DBM);
ieee80211_hw_set(hw, RX_INCLUDES_FCS);
ieee80211_hw_set(hw, AMPDU_AGGREGATION);
ieee80211_hw_set(hw, MFP_CAPABLE);
ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
ieee80211_hw_set(hw, SUPPORTS_PS);
ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_ADHOC) |
BIT(NL80211_IFTYPE_MESH_POINT);
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
hw->wiphy->features |= NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
rtw_set_supported_band(hw, rtwdev->chip);
SET_IEEE80211_PERM_ADDR(hw, rtwdev->efuse.addr);
rtw_regd_init(rtwdev, rtw_regd_notifier);
ret = ieee80211_register_hw(hw);
if (ret) {
rtw_err(rtwdev, "failed to register hw\n");
return ret;
}
if (regulatory_hint(hw->wiphy, rtwdev->regd.alpha2))
rtw_err(rtwdev, "regulatory_hint fail\n");
rtw_debugfs_init(rtwdev);
return 0;
}
EXPORT_SYMBOL(rtw_register_hw);
void rtw_unregister_hw(struct rtw_dev *rtwdev, struct ieee80211_hw *hw)
{
struct rtw_chip_info *chip = rtwdev->chip;
ieee80211_unregister_hw(hw);
rtw_unset_supported_band(hw, chip);
}
EXPORT_SYMBOL(rtw_unregister_hw);
MODULE_AUTHOR("Realtek Corporation");
MODULE_DESCRIPTION("Realtek 802.11ac wireless core module");
MODULE_LICENSE("Dual BSD/GPL");
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