ath6kl: add support wmi rate tables with mcs15

Some of the firmware versions support rate tables up to mcs15, add support for
that.

Signed-off-by: Jessica Wu <wjessica@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/core.h

@@ -145,6 +145,9 @@ enum ath6kl_fw_capability {
 	/* use low priority endpoint for all data */
 	ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
 
+	/* ratetable is the 2 stream version (max MCS15) */
+	ATH6KL_FW_CAPABILITY_RATETABLE_MCS15,
+
 	/* this needs to be last */
 	ATH6KL_FW_CAPABILITY_MAX,
 };

drivers/net/wireless/ath/ath6kl/init.c

@@ -1576,6 +1576,7 @@ static const struct fw_capa_str_map {
 	{ ATH6KL_FW_CAPABILITY_64BIT_RATES, "64bit-rates" },
 	{ ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS, "ap-inactivity-mins" },
 	{ ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, "map-lp-endpoint" },
+	{ ATH6KL_FW_CAPABILITY_RATETABLE_MCS15, "ratetable-mcs15" },
 };
 
 static const char *ath6kl_init_get_fw_capa_name(unsigned int id)

drivers/net/wireless/ath/ath6kl/main.c

@@ -702,6 +702,7 @@ static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len)
 	struct ath6kl *ar = vif->ar;
 	struct target_stats *stats = &vif->target_stats;
 	struct tkip_ccmp_stats *ccmp_stats;
+	s32 rate;
 	u8 ac;
 
 	if (len < sizeof(*tgt_stats))
@@ -731,8 +732,9 @@ static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len)
 		le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
 	stats->tx_rts_fail_cnt +=
 		le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
-	stats->tx_ucast_rate =
-	    ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate));
+
+	rate = a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate);
+	stats->tx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
 
 	stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
 	stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
@@ -749,8 +751,9 @@ static void ath6kl_update_target_stats(struct ath6kl_vif *vif, u8 *ptr, u32 len)
 		le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
 	stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
 	stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
-	stats->rx_ucast_rate =
-	    ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate));
+
+	rate = a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate);
+	stats->rx_ucast_rate = ath6kl_wmi_get_rate(ar->wmi, rate);
 
 	ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
 

drivers/net/wireless/ath/ath6kl/wmi.c

@@ -59,6 +59,55 @@ static const s32 wmi_rate_tbl[][2] = {
 	{0, 0}
 };
 
+static const s32 wmi_rate_tbl_mcs15[][2] = {
+	/* {W/O SGI, with SGI} */
+	{1000, 1000},
+	{2000, 2000},
+	{5500, 5500},
+	{11000, 11000},
+	{6000, 6000},
+	{9000, 9000},
+	{12000, 12000},
+	{18000, 18000},
+	{24000, 24000},
+	{36000, 36000},
+	{48000, 48000},
+	{54000, 54000},
+	{6500, 7200},     /* HT 20, MCS 0 */
+	{13000, 14400},
+	{19500, 21700},
+	{26000, 28900},
+	{39000, 43300},
+	{52000, 57800},
+	{58500, 65000},
+	{65000, 72200},
+	{13000, 14400},   /* HT 20, MCS 8 */
+	{26000, 28900},
+	{39000, 43300},
+	{52000, 57800},
+	{78000, 86700},
+	{104000, 115600},
+	{117000, 130000},
+	{130000, 144400}, /* HT 20, MCS 15 */
+	{13500, 15000},   /*HT 40, MCS 0 */
+	{27000, 30000},
+	{40500, 45000},
+	{54000, 60000},
+	{81000, 90000},
+	{108000, 120000},
+	{121500, 135000},
+	{135000, 150000},
+	{27000, 30000},   /*HT 40, MCS 8 */
+	{54000, 60000},
+	{81000, 90000},
+	{108000, 120000},
+	{162000, 180000},
+	{216000, 240000},
+	{243000, 270000},
+	{270000, 300000}, /*HT 40, MCS 15 */
+	{0, 0}
+};
+
 /* 802.1d to AC mapping. Refer pg 57 of WMM-test-plan-v1.2 */
 static const u8 up_to_ac[] = {
 	WMM_AC_BE,
@@ -3280,9 +3329,11 @@ int ath6kl_wmi_set_regdomain_cmd(struct wmi *wmi, const char *alpha2)
 				   NO_SYNC_WMIFLAG);
 }
 
-s32 ath6kl_wmi_get_rate(s8 rate_index)
+s32 ath6kl_wmi_get_rate(struct wmi *wmi, s8 rate_index)
 {
+	struct ath6kl *ar = wmi->parent_dev;
 	u8 sgi = 0;
+	s32 ret;
 
 	if (rate_index == RATE_AUTO)
 		return 0;
@@ -3293,10 +3344,20 @@ s32 ath6kl_wmi_get_rate(s8 rate_index)
 		sgi = 1;
 	}
 
-	if (WARN_ON(rate_index > RATE_MCS_7_40))
-		rate_index = RATE_MCS_7_40;
+	if (test_bit(ATH6KL_FW_CAPABILITY_RATETABLE_MCS15,
+		     ar->fw_capabilities)) {
+		if (WARN_ON(rate_index >= ARRAY_SIZE(wmi_rate_tbl_mcs15)))
+			return 0;
+
+		ret = wmi_rate_tbl_mcs15[(u32) rate_index][sgi];
+	} else {
+		if (WARN_ON(rate_index >= ARRAY_SIZE(wmi_rate_tbl)))
+			return 0;
 
-	return wmi_rate_tbl[(u32) rate_index][sgi];
+		ret = wmi_rate_tbl[(u32) rate_index][sgi];
+	}
+
+	return ret;
 }
 
 static int ath6kl_wmi_get_pmkid_list_event_rx(struct wmi *wmi, u8 *datap,

drivers/net/wireless/ath/ath6kl/wmi.h

@@ -2632,7 +2632,7 @@ int ath6kl_wmi_set_htcap_cmd(struct wmi *wmi, u8 if_idx,
 			     struct ath6kl_htcap *htcap);
 int ath6kl_wmi_test_cmd(struct wmi *wmi, void *buf, size_t len);
 
-s32 ath6kl_wmi_get_rate(s8 rate_index);
+s32 ath6kl_wmi_get_rate(struct wmi *wmi, s8 rate_index);
 
 int ath6kl_wmi_set_ip_cmd(struct wmi *wmi, u8 if_idx,
 			  __be32 ips0, __be32 ips1);