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wifi: rtw89: add related H2C for WoWLAN mode
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In this patch we define some H2C, which will be called during suspend
flow, to enable WoWLAN function provided by WoWLAN firmware.

These H2C includes keep alive used to send null packet to AP periodically
to avoid being disconnected by AP, disconnect detection used to configure
how we check if AP is offline, wake up control used to decide which WiFi
events could trigger resume flow, and global control used to enable WoWLAN
function.

Signed-off-by: Chin-Yen Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221027052707.14605-6-pkshih@realtek.com
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Chin-Yen Lee authored and Kalle Valo committed Nov 1, 2022
1 parent 41d5676 commit ee88d74
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30 changes: 30 additions & 0 deletions drivers/net/wireless/realtek/rtw89/core.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -477,6 +477,20 @@ enum rtw89_regulation_type {
RTW89_REGD_NUM,
};

enum rtw89_fw_pkt_ofld_type {
RTW89_PKT_OFLD_TYPE_PROBE_RSP = 0,
RTW89_PKT_OFLD_TYPE_PS_POLL = 1,
RTW89_PKT_OFLD_TYPE_NULL_DATA = 2,
RTW89_PKT_OFLD_TYPE_QOS_NULL = 3,
RTW89_PKT_OFLD_TYPE_CTS2SELF = 4,
RTW89_PKT_OFLD_TYPE_ARP_RSP = 5,
RTW89_PKT_OFLD_TYPE_NDP = 6,
RTW89_PKT_OFLD_TYPE_EAPOL_KEY = 7,
RTW89_PKT_OFLD_TYPE_SA_QUERY = 8,
RTW89_PKT_OFLD_TYPE_PROBE_REQ = 12,
RTW89_PKT_OFLD_TYPE_NUM,
};

struct rtw89_txpwr_byrate {
s8 cck[RTW89_RATE_CCK_MAX];
s8 ofdm[RTW89_RATE_OFDM_MAX];
Expand Down Expand Up @@ -636,6 +650,13 @@ enum rtw89_sc_offset {
RTW89_SC_40_LOWER = 10,
};

enum rtw89_wow_flags {
RTW89_WOW_FLAG_EN_MAGIC_PKT,
RTW89_WOW_FLAG_EN_REKEY_PKT,
RTW89_WOW_FLAG_EN_DISCONNECT,
RTW89_WOW_FLAG_NUM,
};

struct rtw89_chan {
u8 channel;
u8 primary_channel;
Expand Down Expand Up @@ -3453,6 +3474,13 @@ struct rtw89_phy_efuse_gain {
s8 comp[RF_PATH_MAX][RTW89_SUBBAND_NR]; /* S(8, 0) */
};

struct rtw89_wow_param {
struct ieee80211_vif *wow_vif;
DECLARE_BITMAP(flags, RTW89_WOW_FLAG_NUM);
u8 pattern_cnt;
struct list_head pkt_list;
};

struct rtw89_dev {
struct ieee80211_hw *hw;
struct device *dev;
Expand Down Expand Up @@ -3541,6 +3569,8 @@ struct rtw89_dev {
enum rtw89_ps_mode ps_mode;
bool lps_enabled;

struct rtw89_wow_param wow;

/* napi structure */
struct net_device netdev;
struct napi_struct napi;
Expand Down
229 changes: 229 additions & 0 deletions drivers/net/wireless/realtek/rtw89/fw.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -869,6 +869,56 @@ int rtw89_fw_h2c_fw_log(struct rtw89_dev *rtwdev, bool enable)
return ret;
}

static int rtw89_fw_h2c_add_wow_fw_ofld(struct rtw89_dev *rtwdev,
struct rtw89_vif *rtwvif,
enum rtw89_fw_pkt_ofld_type type,
u8 *id)
{
struct ieee80211_vif *vif = rtwvif_to_vif(rtwvif);
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_pktofld_info *info;
struct sk_buff *skb;
int ret;

info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;

switch (type) {
case RTW89_PKT_OFLD_TYPE_PS_POLL:
skb = ieee80211_pspoll_get(rtwdev->hw, vif);
break;
case RTW89_PKT_OFLD_TYPE_PROBE_RSP:
skb = ieee80211_proberesp_get(rtwdev->hw, vif);
break;
case RTW89_PKT_OFLD_TYPE_NULL_DATA:
skb = ieee80211_nullfunc_get(rtwdev->hw, vif, -1, false);
break;
case RTW89_PKT_OFLD_TYPE_QOS_NULL:
skb = ieee80211_nullfunc_get(rtwdev->hw, vif, -1, true);
break;
default:
goto err;
}

if (!skb)
goto err;

list_add_tail(&info->list, &rtw_wow->pkt_list);
ret = rtw89_fw_h2c_add_pkt_offload(rtwdev, &info->id, skb);
kfree_skb(skb);

if (ret)
return ret;

*id = info->id;
return 0;

err:
kfree(info);
return -ENOMEM;
}

#define H2C_GENERAL_PKT_LEN 6
#define H2C_GENERAL_PKT_ID_UND 0xff
int rtw89_fw_h2c_general_pkt(struct rtw89_dev *rtwdev, u8 macid)
Expand Down Expand Up @@ -2943,3 +2993,182 @@ int rtw89_fw_h2c_pkt_drop(struct rtw89_dev *rtwdev,
dev_kfree_skb_any(skb);
return ret;
}

#define H2C_KEEP_ALIVE_LEN 4
int rtw89_fw_h2c_keep_alive(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif,
bool enable)
{
struct sk_buff *skb;
u8 pkt_id = 0;
int ret;

if (enable) {
ret = rtw89_fw_h2c_add_wow_fw_ofld(rtwdev, rtwvif,
RTW89_PKT_OFLD_TYPE_NULL_DATA, &pkt_id);
if (ret)
return -EPERM;
}

skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, H2C_KEEP_ALIVE_LEN);
if (!skb) {
rtw89_err(rtwdev, "failed to alloc skb for keep alive\n");
return -ENOMEM;
}

skb_put(skb, H2C_KEEP_ALIVE_LEN);

RTW89_SET_KEEP_ALIVE_ENABLE(skb->data, enable);
RTW89_SET_KEEP_ALIVE_PKT_NULL_ID(skb->data, pkt_id);
RTW89_SET_KEEP_ALIVE_PERIOD(skb->data, 5);
RTW89_SET_KEEP_ALIVE_MACID(skb->data, rtwvif->mac_id);

rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
H2C_CAT_MAC,
H2C_CL_MAC_WOW,
H2C_FUNC_KEEP_ALIVE, 0, 1,
H2C_KEEP_ALIVE_LEN);

ret = rtw89_h2c_tx(rtwdev, skb, false);
if (ret) {
rtw89_err(rtwdev, "failed to send h2c\n");
goto fail;
}

return 0;

fail:
dev_kfree_skb_any(skb);

return ret;
}

#define H2C_DISCONNECT_DETECT_LEN 8
int rtw89_fw_h2c_disconnect_detect(struct rtw89_dev *rtwdev,
struct rtw89_vif *rtwvif, bool enable)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct sk_buff *skb;
u8 macid = rtwvif->mac_id;
int ret;

skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, H2C_DISCONNECT_DETECT_LEN);
if (!skb) {
rtw89_err(rtwdev, "failed to alloc skb for keep alive\n");
return -ENOMEM;
}

skb_put(skb, H2C_DISCONNECT_DETECT_LEN);

if (test_bit(RTW89_WOW_FLAG_EN_DISCONNECT, rtw_wow->flags)) {
RTW89_SET_DISCONNECT_DETECT_ENABLE(skb->data, enable);
RTW89_SET_DISCONNECT_DETECT_DISCONNECT(skb->data, !enable);
RTW89_SET_DISCONNECT_DETECT_MAC_ID(skb->data, macid);
RTW89_SET_DISCONNECT_DETECT_CHECK_PERIOD(skb->data, 100);
RTW89_SET_DISCONNECT_DETECT_TRY_PKT_COUNT(skb->data, 5);
}

rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
H2C_CAT_MAC,
H2C_CL_MAC_WOW,
H2C_FUNC_DISCONNECT_DETECT, 0, 1,
H2C_DISCONNECT_DETECT_LEN);

ret = rtw89_h2c_tx(rtwdev, skb, false);
if (ret) {
rtw89_err(rtwdev, "failed to send h2c\n");
goto fail;
}

return 0;

fail:
dev_kfree_skb_any(skb);

return ret;
}

#define H2C_WOW_GLOBAL_LEN 8
int rtw89_fw_h2c_wow_global(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif,
bool enable)
{
struct sk_buff *skb;
u8 macid = rtwvif->mac_id;
int ret;

skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, H2C_WOW_GLOBAL_LEN);
if (!skb) {
rtw89_err(rtwdev, "failed to alloc skb for keep alive\n");
return -ENOMEM;
}

skb_put(skb, H2C_WOW_GLOBAL_LEN);

RTW89_SET_WOW_GLOBAL_ENABLE(skb->data, enable);
RTW89_SET_WOW_GLOBAL_MAC_ID(skb->data, macid);

rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
H2C_CAT_MAC,
H2C_CL_MAC_WOW,
H2C_FUNC_WOW_GLOBAL, 0, 1,
H2C_WOW_GLOBAL_LEN);

ret = rtw89_h2c_tx(rtwdev, skb, false);
if (ret) {
rtw89_err(rtwdev, "failed to send h2c\n");
goto fail;
}

return 0;

fail:
dev_kfree_skb_any(skb);

return ret;
}

#define H2C_WAKEUP_CTRL_LEN 4
int rtw89_fw_h2c_wow_wakeup_ctrl(struct rtw89_dev *rtwdev,
struct rtw89_vif *rtwvif,
bool enable)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct sk_buff *skb;
u8 macid = rtwvif->mac_id;
int ret;

skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, H2C_WAKEUP_CTRL_LEN);
if (!skb) {
rtw89_err(rtwdev, "failed to alloc skb for keep alive\n");
return -ENOMEM;
}

skb_put(skb, H2C_WAKEUP_CTRL_LEN);

if (rtw_wow->pattern_cnt)
RTW89_SET_WOW_WAKEUP_CTRL_PATTERN_MATCH_ENABLE(skb->data, enable);
if (test_bit(RTW89_WOW_FLAG_EN_MAGIC_PKT, rtw_wow->flags))
RTW89_SET_WOW_WAKEUP_CTRL_MAGIC_ENABLE(skb->data, enable);
if (test_bit(RTW89_WOW_FLAG_EN_DISCONNECT, rtw_wow->flags))
RTW89_SET_WOW_WAKEUP_CTRL_DEAUTH_ENABLE(skb->data, enable);

RTW89_SET_WOW_WAKEUP_CTRL_MAC_ID(skb->data, macid);

rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
H2C_CAT_MAC,
H2C_CL_MAC_WOW,
H2C_FUNC_WAKEUP_CTRL, 0, 1,
H2C_WAKEUP_CTRL_LEN);

ret = rtw89_h2c_tx(rtwdev, skb, false);
if (ret) {
rtw89_err(rtwdev, "failed to send h2c\n");
goto fail;
}

return 0;

fail:
dev_kfree_skb_any(skb);

return ret;
}
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