rtw89: 8852a: add ieee80211_ops::hw_scan

Declare this function allows us to use customized scanning policy, so
each scan takes less time. This is a similar implementation to hw_scan
in rtw88, except that we offload more items to firmware and extend the
maximum IE length. For backward compatibility, we fallback to sw_scan
when firmware does not support this feature.

Signed-off-by: Po Hao Huang <phhuang@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/20220225030851.13327-2-pkshih@realtek.com

1 files changed, 351 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw89/fw.h b/drivers/net/wireless/realtek/rtw89/fw.h
index 83f4eaaf90f3..ed8609b204e0 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.h
+++ b/drivers/net/wireless/realtek/rtw89/fw.h
@@ -123,6 +123,27 @@ enum rtw89_fw_log_comp {
 	RTW89_FW_LOG_COMP_MCC = 20,
 };
 
+enum rtw89_pkt_offload_op {
+	RTW89_PKT_OFLD_OP_ADD,
+	RTW89_PKT_OFLD_OP_DEL,
+	RTW89_PKT_OFLD_OP_READ,
+};
+
+enum rtw89_scanofld_notify_reason {
+	RTW89_SCAN_DWELL_NOTIFY,
+	RTW89_SCAN_PRE_TX_NOTIFY,
+	RTW89_SCAN_POST_TX_NOTIFY,
+	RTW89_SCAN_ENTER_CH_NOTIFY,
+	RTW89_SCAN_LEAVE_CH_NOTIFY,
+	RTW89_SCAN_END_SCAN_NOTIFY,
+};
+
+enum rtw89_chan_type {
+	RTW89_CHAN_OPERATE = 0,
+	RTW89_CHAN_ACTIVE,
+	RTW89_CHAN_DFS,
+};
+
 #define FWDL_SECTION_MAX_NUM 10
 #define FWDL_SECTION_CHKSUM_LEN	8
 #define FWDL_SECTION_PER_PKT_LEN 2020
@@ -156,6 +177,50 @@ struct rtw89_h2creg_sch_tx_en {
 	u16 rsvd:15;
 } __packed;
 
+#define RTW89_CHANNEL_TIME 45
+#define RTW89_DFS_CHAN_TIME 105
+#define RTW89_OFF_CHAN_TIME 100
+#define RTW89_DWELL_TIME 20
+#define RTW89_SCAN_WIDTH 0
+#define RTW89_SCANOFLD_MAX_SSID 8
+#define RTW89_SCANOFLD_MAX_IE_LEN 512
+#define RTW89_SCANOFLD_PKT_NONE 0xFF
+#define RTW89_SCANOFLD_DEBUG_MASK 0x1F
+#define RTW89_MAC_CHINFO_SIZE 20
+
+struct rtw89_mac_chinfo {
+	u8 period;
+	u8 dwell_time;
+	u8 central_ch;
+	u8 pri_ch;
+	u8 bw:3;
+	u8 notify_action:5;
+	u8 num_pkt:4;
+	u8 tx_pkt:1;
+	u8 pause_data:1;
+	u8 ch_band:2;
+	u8 probe_id;
+	u8 dfs_ch:1;
+	u8 tx_null:1;
+	u8 rand_seq_num:1;
+	u8 cfg_tx_pwr:1;
+	u8 rsvd0: 4;
+	u8 pkt_id[RTW89_SCANOFLD_MAX_SSID];
+	u16 tx_pwr_idx;
+	u8 rsvd1;
+	struct list_head list;
+};
+
+struct rtw89_scan_option {
+	bool enable;
+	bool target_ch_mode;
+};
+
+struct rtw89_pktofld_info {
+	struct list_head list;
+	u8 id;
+};
+
 static inline void RTW89_SET_FWCMD_RA_IS_DIS(void *cmd, u32 val)
 {
 	le32p_replace_bits((__le32 *)(cmd) + 0x00, val, BIT(0));
@@ -1436,6 +1501,14 @@ enum rtw89_btc_cxdrvinfo {
 	CXDRVINFO_MAX,
 };
 
+enum rtw89_scan_mode {
+	RTW89_SCAN_IMMEDIATE,
+};
+
+enum rtw89_scan_type {
+	RTW89_SCAN_ONCE,
+};
+
 static inline void RTW89_SET_FWCMD_CXHDR_TYPE(void *cmd, u8 val)
 {
 	u8p_replace_bits((u8 *)(cmd) + 0, val, GENMASK(7, 0));
@@ -1706,6 +1779,242 @@ static inline void RTW89_SET_FWCMD_CXRFK_TYPE(void *cmd, u32 val)
 	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 2), val, GENMASK(17, 10));
 }
 
+static inline void RTW89_SET_FWCMD_PACKET_OFLD_PKT_IDX(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(7, 0));
+}
+
+static inline void RTW89_SET_FWCMD_PACKET_OFLD_PKT_OP(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(10, 8));
+}
+
+static inline void RTW89_SET_FWCMD_PACKET_OFLD_PKT_LENGTH(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(31, 16));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_CH_NUM(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(7, 0));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_CH_SIZE(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(15, 8));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PERIOD(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(7, 0));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_DWELL(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(15, 8));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_CENTER_CH(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(23, 16));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PRI_CH(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(31, 24));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_BW(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(2, 0));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_ACTION(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(7, 3));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_NUM_PKT(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(11, 8));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_TX(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(12));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PAUSE_DATA(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(13));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_BAND(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(15, 14));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT_ID(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(23, 16));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_DFS(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(24));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_TX_NULL(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(25));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_RANDOM(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(26));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_CFG_TX(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(27));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT0(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 8), val, GENMASK(7, 0));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT1(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 8), val, GENMASK(15, 8));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT2(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 8), val, GENMASK(23, 16));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT3(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 8), val, GENMASK(31, 24));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT4(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 12), val, GENMASK(7, 0));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT5(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 12), val, GENMASK(15, 8));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT6(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 12), val, GENMASK(23, 16));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_PKT7(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 12), val, GENMASK(31, 24));
+}
+
+static inline void RTW89_SET_FWCMD_CHINFO_POWER_IDX(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 16), val, GENMASK(15, 0));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_MACID(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(7, 0));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_NORM_CY(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(15, 8));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_PORT_ID(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(18, 16));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_BAND(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, BIT(19));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_OPERATION(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(21, 20));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_TARGET_CH_BAND(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd)), val, GENMASK(23, 22));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_NOTIFY_END(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(0));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_TARGET_CH_MODE(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(1));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_START_MODE(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, BIT(2));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_SCAN_TYPE(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(4, 3));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_TARGET_CH_BW(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(7, 5));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_TARGET_PRI_CH(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(15, 8));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_TARGET_CENTRAL_CH(void *cmd,
+							      u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(23, 16));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_PROBE_REQ_PKT_ID(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 4), val, GENMASK(31, 24));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_NORM_PD(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 8), val, GENMASK(15, 0));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_SLOW_PD(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 8), val, GENMASK(23, 16));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_TSF_HIGH(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 12), val, GENMASK(31, 0));
+}
+
+static inline void RTW89_SET_FWCMD_SCANOFLD_TSF_SLOW(void *cmd, u32 val)
+{
+	le32p_replace_bits((__le32 *)((u8 *)(cmd) + 16), val, GENMASK(31, 0));
+}
+
 #define RTW89_C2H_HEADER_LEN 8
 
 #define RTW89_GET_C2H_CATEGORY(c2h) \
@@ -1762,6 +2071,26 @@ static inline void RTW89_SET_FWCMD_CXRFK_TYPE(void *cmd, u32 val)
 #define RTW89_MK_HT_RATE(nss, mcs) (FIELD_PREP(GENMASK(4, 3), nss) | \
 				    FIELD_PREP(GENMASK(2, 0), mcs))
 
+#define RTW89_GET_MAC_C2H_PKTOFLD_ID(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 2), GENMASK(7, 0))
+#define RTW89_GET_MAC_C2H_PKTOFLD_OP(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 2), GENMASK(10, 8))
+#define RTW89_GET_MAC_C2H_PKTOFLD_LEN(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 2), GENMASK(31, 16))
+
+#define RTW89_GET_MAC_C2H_SCANOFLD_PRI_CH(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 2), GENMASK(7, 0))
+#define RTW89_GET_MAC_C2H_SCANOFLD_RSP(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 2), GENMASK(19, 16))
+#define RTW89_GET_MAC_C2H_SCANOFLD_STATUS(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 2), GENMASK(23, 20))
+#define RTW89_GET_MAC_C2H_SCANOFLD_TX_FAIL(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 5), GENMASK(3, 0))
+#define RTW89_GET_MAC_C2H_SCANOFLD_AIR_DENSITY(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 5), GENMASK(7, 4))
+#define RTW89_GET_MAC_C2H_SCANOFLD_BAND(c2h) \
+	le32_get_bits(*((const __le32 *)(c2h) + 5), GENMASK(25, 24))
+
 #define RTW89_FW_HDR_SIZE 32
 #define RTW89_FW_SECTION_HDR_SIZE 16
 
@@ -1842,9 +2171,12 @@ struct rtw89_fw_h2c_rf_reg_info {
 
 /* CLASS 9 - FW offload */
 #define H2C_CL_MAC_FW_OFLD		0x9
+#define H2C_FUNC_PACKET_OFLD		0x1
 #define H2C_FUNC_MAC_MACID_PAUSE	0x8
 #define H2C_FUNC_USR_EDCA		0xF
 #define H2C_FUNC_OFLD_CFG		0x14
+#define H2C_FUNC_ADD_SCANOFLD_CH	0x16
+#define H2C_FUNC_SCANOFLD		0x17
 
 /* CLASS 10 - Security CAM */
 #define H2C_CL_MAC_SEC_CAM		0xa
@@ -1900,6 +2232,14 @@ int rtw89_fw_h2c_cxdrv_init(struct rtw89_dev *rtwdev);
 int rtw89_fw_h2c_cxdrv_role(struct rtw89_dev *rtwdev);
 int rtw89_fw_h2c_cxdrv_ctrl(struct rtw89_dev *rtwdev);
 int rtw89_fw_h2c_cxdrv_rfk(struct rtw89_dev *rtwdev);
+int rtw89_fw_h2c_del_pkt_offload(struct rtw89_dev *rtwdev, u8 id);
+int rtw89_fw_h2c_add_pkt_offload(struct rtw89_dev *rtwdev, u8 *id,
+				 struct sk_buff *skb_ofld);
+int rtw89_fw_h2c_scan_list_offload(struct rtw89_dev *rtwdev, int len,
+				   struct list_head *chan_list);
+int rtw89_fw_h2c_scan_offload(struct rtw89_dev *rtwdev,
+			      struct rtw89_scan_option *opt,
+			      struct rtw89_vif *vif);
 int rtw89_fw_h2c_rf_reg(struct rtw89_dev *rtwdev,
 			struct rtw89_fw_h2c_rf_reg_info *info,
 			u16 len, u8 page);
@@ -1922,5 +2262,16 @@ int rtw89_fw_msg_reg(struct rtw89_dev *rtwdev,
 		     struct rtw89_mac_c2h_info *c2h_info);
 int rtw89_fw_h2c_fw_log(struct rtw89_dev *rtwdev, bool enable);
 void rtw89_fw_st_dbg_dump(struct rtw89_dev *rtwdev);
+void rtw89_store_op_chan(struct rtw89_dev *rtwdev);
+void rtw89_hw_scan_start(struct rtw89_dev *rtwdev, struct ieee80211_vif *vif,
+			 struct ieee80211_scan_request *req);
+void rtw89_hw_scan_complete(struct rtw89_dev *rtwdev, struct ieee80211_vif *vif,
+			    bool aborted);
+int rtw89_hw_scan_offload(struct rtw89_dev *rtwdev, struct ieee80211_vif *vif,
+			  bool enable);
+void rtw89_hw_scan_status_report(struct rtw89_dev *rtwdev, struct sk_buff *skb);
+void rtw89_hw_scan_chan_switch(struct rtw89_dev *rtwdev, struct sk_buff *skb);
+void rtw89_hw_scan_abort(struct rtw89_dev *rtwdev, struct ieee80211_vif *vif);
+void rtw89_store_op_chan(struct rtw89_dev *rtwdev);
 
 #endif