Merge branch 'wl12xx-next' into for-linville

drivers/net/wireless/ti/wl1251/sdio.c

@@ -186,8 +186,10 @@ static int wl1251_sdio_set_power(struct wl1251 *wl, bool enable)
 			wl->set_power(true);
 
 		ret = pm_runtime_get_sync(&func->dev);
-		if (ret < 0)
+		if (ret < 0) {
+			pm_runtime_put_sync(&func->dev);
 			goto out;
+		}
 
 		sdio_claim_host(func);
 		sdio_enable_func(func);

drivers/net/wireless/ti/wl12xx/main.c

@@ -723,6 +723,7 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 	wl->sched_scan_templ_id_2_4 = CMD_TEMPL_CFG_PROBE_REQ_2_4;
 	wl->sched_scan_templ_id_5 = CMD_TEMPL_CFG_PROBE_REQ_5;
 	wl->max_channels_5 = WL12XX_MAX_CHANNELS_5GHZ;
+	wl->ba_rx_session_count_max = WL12XX_RX_BA_MAX_SESSIONS;
 out:
 	return ret;
 }

drivers/net/wireless/ti/wl12xx/wl12xx.h

@@ -63,6 +63,8 @@
 
 #define WL12XX_NUM_MAC_ADDRESSES 2
 
+#define WL12XX_RX_BA_MAX_SESSIONS 3
+
 struct wl127x_rx_mem_pool_addr {
 	u32 addr;
 	u32 addr_extra;

drivers/net/wireless/ti/wl18xx/main.c

@@ -678,6 +678,7 @@ static int wl18xx_identify_chip(struct wl1271 *wl)
 	wl->sched_scan_templ_id_2_4 = CMD_TEMPL_PROBE_REQ_2_4_PERIODIC;
 	wl->sched_scan_templ_id_5 = CMD_TEMPL_PROBE_REQ_5_PERIODIC;
 	wl->max_channels_5 = WL18XX_MAX_CHANNELS_5GHZ;
+	wl->ba_rx_session_count_max = WL18XX_RX_BA_MAX_SESSIONS;
 out:
 	return ret;
 }
@@ -1144,6 +1145,7 @@ static u32 wl18xx_ap_get_mimo_wide_rate_mask(struct wl1271 *wl,
 static int wl18xx_get_pg_ver(struct wl1271 *wl, s8 *ver)
 {
 	u32 fuse;
+	s8 rom = 0, metal = 0, pg_ver = 0, rdl_ver = 0;
 	int ret;
 
 	ret = wlcore_set_partition(wl, &wl->ptable[PART_TOP_PRCM_ELP_SOC]);
@@ -1154,8 +1156,29 @@ static int wl18xx_get_pg_ver(struct wl1271 *wl, s8 *ver)
 	if (ret < 0)
 		goto out;
 
+	pg_ver = (fuse & WL18XX_PG_VER_MASK) >> WL18XX_PG_VER_OFFSET;
+	rom = (fuse & WL18XX_ROM_VER_MASK) >> WL18XX_ROM_VER_OFFSET;
+
+	if (rom <= 0xE)
+		metal = (fuse & WL18XX_METAL_VER_MASK) >>
+			WL18XX_METAL_VER_OFFSET;
+	else
+		metal = (fuse & WL18XX_NEW_METAL_VER_MASK) >>
+			WL18XX_NEW_METAL_VER_OFFSET;
+
+	ret = wlcore_read32(wl, WL18XX_REG_FUSE_DATA_2_3, &fuse);
+	if (ret < 0)
+		goto out;
+
+	rdl_ver = (fuse & WL18XX_RDL_VER_MASK) >> WL18XX_RDL_VER_OFFSET;
+	if (rdl_ver > RDL_MAX)
+		rdl_ver = RDL_NONE;
+
+	wl1271_info("wl18xx HW: RDL %d, %s, PG %x.%x (ROM %x)",
+		    rdl_ver, rdl_names[rdl_ver], pg_ver, metal, rom);
+
 	if (ver)
-		*ver = (fuse & WL18XX_PG_VER_MASK) >> WL18XX_PG_VER_OFFSET;
+		*ver = pg_ver;
 
 	ret = wlcore_set_partition(wl, &wl->ptable[PART_BOOT]);
 

drivers/net/wireless/ti/wl18xx/reg.h

@@ -131,6 +131,16 @@
 #define WL18XX_REG_FUSE_DATA_1_3	0xA0260C
 #define WL18XX_PG_VER_MASK		0x70
 #define WL18XX_PG_VER_OFFSET		4
+#define WL18XX_ROM_VER_MASK		0x3
+#define WL18XX_ROM_VER_OFFSET		0
+#define WL18XX_METAL_VER_MASK		0xC
+#define WL18XX_METAL_VER_OFFSET		2
+#define WL18XX_NEW_METAL_VER_MASK	0x180
+#define WL18XX_NEW_METAL_VER_OFFSET	7
+
+#define WL18XX_REG_FUSE_DATA_2_3	0xA02614
+#define WL18XX_RDL_VER_MASK		0x1f00
+#define WL18XX_RDL_VER_OFFSET		8
 
 #define WL18XX_REG_FUSE_BD_ADDR_1	0xA02602
 #define WL18XX_REG_FUSE_BD_ADDR_2	0xA02606
@@ -188,4 +198,23 @@ enum {
 	NUM_BOARD_TYPES,
 };
 
+enum {
+	RDL_NONE	= 0,
+	RDL_1_HP	= 1,
+	RDL_2_SP	= 2,
+	RDL_3_HP	= 3,
+	RDL_4_SP	= 4,
+
+	_RDL_LAST,
+	RDL_MAX = _RDL_LAST - 1,
+};
+
+static const char * const rdl_names[] = {
+	[RDL_NONE]	= "",
+	[RDL_1_HP]	= "1853 SISO",
+	[RDL_2_SP]	= "1857 MIMO",
+	[RDL_3_HP]	= "1893 SISO",
+	[RDL_4_SP]	= "1897 MIMO",
+};
+
 #endif /* __REG_H__ */

drivers/net/wireless/ti/wl18xx/wl18xx.h

@@ -29,7 +29,7 @@
 #define WL18XX_IFTYPE_VER	5
 #define WL18XX_MAJOR_VER	WLCORE_FW_VER_IGNORE
 #define WL18XX_SUBTYPE_VER	WLCORE_FW_VER_IGNORE
-#define WL18XX_MINOR_VER	28
+#define WL18XX_MINOR_VER	39
 
 #define WL18XX_CMD_MAX_SIZE          740
 
@@ -40,6 +40,8 @@
 
 #define WL18XX_NUM_MAC_ADDRESSES 3
 
+#define WL18XX_RX_BA_MAX_SESSIONS 5
+
 struct wl18xx_priv {
 	/* buffer for sending commands to FW */
 	u8 cmd_buf[WL18XX_CMD_MAX_SIZE];

drivers/net/wireless/ti/wlcore/acx.c

@@ -1736,6 +1736,35 @@ int wl12xx_acx_config_hangover(struct wl1271 *wl)
 
 }
 
+int wlcore_acx_average_rssi(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+			    s8 *avg_rssi)
+{
+	struct acx_roaming_stats *acx;
+	int ret = 0;
+
+	wl1271_debug(DEBUG_ACX, "acx roaming statistics");
+
+	acx = kzalloc(sizeof(*acx), GFP_KERNEL);
+	if (!acx) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	acx->role_id = wlvif->role_id;
+	ret = wl1271_cmd_interrogate(wl, ACX_ROAMING_STATISTICS_TBL,
+				     acx, sizeof(*acx));
+	if (ret	< 0) {
+		wl1271_warning("acx roaming statistics failed: %d", ret);
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	*avg_rssi = acx->rssi_beacon;
+out:
+	kfree(acx);
+	return ret;
+}
+
 #ifdef CONFIG_PM
 /* Set the global behaviour of RX filters - On/Off + default action */
 int wl1271_acx_default_rx_filter_enable(struct wl1271 *wl, bool enable,

drivers/net/wireless/ti/wlcore/acx.h

@@ -728,8 +728,6 @@ struct wl1271_acx_ht_information {
 	u8 padding[2];
 } __packed;
 
-#define RX_BA_MAX_SESSIONS 3
-
 struct wl1271_acx_ba_initiator_policy {
 	struct acx_header header;
 
@@ -955,6 +953,18 @@ struct acx_rx_filter_cfg {
 	u8 fields[0];
 } __packed;
 
+struct acx_roaming_stats {
+	struct acx_header header;
+
+	u8	role_id;
+	u8	pad[3];
+	u32	missed_beacons;
+	u8	snr_data;
+	u8	snr_bacon;
+	s8	rssi_data;
+	s8	rssi_beacon;
+} __packed;
+
 enum {
 	ACX_WAKE_UP_CONDITIONS           = 0x0000,
 	ACX_MEM_CFG                      = 0x0001,
@@ -1112,6 +1122,8 @@ int wl1271_acx_set_inconnection_sta(struct wl1271 *wl, u8 *addr);
 int wl1271_acx_fm_coex(struct wl1271 *wl);
 int wl12xx_acx_set_rate_mgmt_params(struct wl1271 *wl);
 int wl12xx_acx_config_hangover(struct wl1271 *wl);
+int wlcore_acx_average_rssi(struct wl1271 *wl, struct wl12xx_vif *wlvif,
+			    s8 *avg_rssi);
 
 #ifdef CONFIG_PM
 int wl1271_acx_default_rx_filter_enable(struct wl1271 *wl, bool enable,

drivers/net/wireless/ti/wlcore/cmd.c

@@ -327,6 +327,14 @@ int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 	wl->links[link].prev_freed_pkts =
 			wl->fw_status_2->counters.tx_lnk_free_pkts[link];
 	wl->links[link].wlvif = wlvif;
+
+	/*
+	 * Take saved value for total freed packets from wlvif, in case this is
+	 * recovery/resume
+	 */
+	if (wlvif->bss_type != BSS_TYPE_AP_BSS)
+		wl->links[link].total_freed_pkts = wlvif->total_freed_pkts;
+
 	*hlid = link;
 
 	wl->active_link_count++;
@@ -358,6 +366,26 @@ void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 	wl1271_tx_reset_link_queues(wl, *hlid);
 	wl->links[*hlid].wlvif = NULL;
 
+	if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
+	    (wlvif->bss_type == BSS_TYPE_AP_BSS &&
+	     *hlid == wlvif->ap.bcast_hlid)) {
+		/*
+		 * save the total freed packets in the wlvif, in case this is
+		 * recovery or suspend
+		 */
+		wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts;
+
+		/*
+		 * increment the initial seq number on recovery to account for
+		 * transmitted packets that we haven't yet got in the FW status
+		 */
+		if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
+			wlvif->total_freed_pkts +=
+					WL1271_TX_SQN_POST_RECOVERY_PADDING;
+	}
+
+	wl->links[*hlid].total_freed_pkts = 0;
+
 	*hlid = WL12XX_INVALID_LINK_ID;
 	wl->active_link_count--;
 	WARN_ON_ONCE(wl->active_link_count < 0);
@@ -609,6 +637,10 @@ int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 	if (ret < 0)
 		goto out_free_global;
 
+	/* use the previous security seq, if this is a recovery/resume */
+	wl->links[wlvif->ap.bcast_hlid].total_freed_pkts =
+						wlvif->total_freed_pkts;
+
 	cmd->role_id = wlvif->role_id;
 	cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 	cmd->ap.bss_index = WL1271_AP_BSS_INDEX;

drivers/net/wireless/ti/wlcore/debug.h

@@ -89,11 +89,10 @@ extern u32 wl12xx_debug_level;
 	} while (0)
 #endif
 
-/* TODO: use pr_debug_hex_dump when it becomes available */
 #define wl1271_dump(level, prefix, buf, len)				      \
 	do {								      \
 		if (level & wl12xx_debug_level)				      \
-			print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
+			print_hex_dump_debug(DRIVER_PREFIX prefix,	      \
 					DUMP_PREFIX_OFFSET, 16, 1,	      \
 					buf,				      \
 					min_t(size_t, len, DEBUG_DUMP_LIMIT), \
@@ -103,7 +102,7 @@ extern u32 wl12xx_debug_level;
 #define wl1271_dump_ascii(level, prefix, buf, len)			      \
 	do {								      \
 		if (level & wl12xx_debug_level)				      \
-			print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
+			print_hex_dump_debug(DRIVER_PREFIX prefix,	      \
 					DUMP_PREFIX_OFFSET, 16, 1,	      \
 					buf,				      \
 					min_t(size_t, len, DEBUG_DUMP_LIMIT), \

drivers/net/wireless/ti/wlcore/debugfs.c

@@ -598,8 +598,7 @@ static ssize_t vifs_state_read(struct file *file, char __user *user_buf,
 		VIF_STATE_PRINT_INT(last_rssi_event);
 		VIF_STATE_PRINT_INT(ba_support);
 		VIF_STATE_PRINT_INT(ba_allowed);
-		VIF_STATE_PRINT_LLHEX(tx_security_seq);
-		VIF_STATE_PRINT_INT(tx_security_last_seq_lsb);
+		VIF_STATE_PRINT_LLHEX(total_freed_pkts);
 	}
 
 #undef VIF_STATE_PRINT_INT

drivers/net/wireless/ti/wlcore/event.c

@@ -237,6 +237,14 @@ void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap)
 		    !test_bit(wlvif->role_id , &roles_bitmap))
 			continue;
 
+		vif = wl12xx_wlvif_to_vif(wlvif);
+
+		/* don't attempt roaming in case of p2p */
+		if (wlvif->p2p) {
+			ieee80211_connection_loss(vif);
+			continue;
+		}
+
 		/*
 		 * if the work is already queued, it should take place.
 		 * We don't want to delay the connection loss
@@ -246,7 +254,6 @@ void wlcore_event_beacon_loss(struct wl1271 *wl, unsigned long roles_bitmap)
 					     &wlvif->connection_loss_work,
 					     msecs_to_jiffies(delay));
 
-		vif = wl12xx_wlvif_to_vif(wlvif);
 		ieee80211_cqm_rssi_notify(
 				vif,
 				NL80211_CQM_RSSI_BEACON_LOSS_EVENT,

drivers/net/wireless/ti/wlcore/ps.c

@@ -29,6 +29,7 @@
 #define WL1271_WAKEUP_TIMEOUT 500
 
 #define ELP_ENTRY_DELAY  30
+#define ELP_ENTRY_DELAY_FORCE_PS  5
 
 void wl1271_elp_work(struct work_struct *work)
 {
@@ -98,7 +99,8 @@ void wl1271_ps_elp_sleep(struct wl1271 *wl)
 			return;
 	}
 
-	timeout = ELP_ENTRY_DELAY;
+	timeout = wl->conf.conn.forced_ps ?
+			ELP_ENTRY_DELAY_FORCE_PS : ELP_ENTRY_DELAY;
 	ieee80211_queue_delayed_work(wl->hw, &wl->elp_work,
 				     msecs_to_jiffies(timeout));
 }

drivers/net/wireless/ti/wlcore/tx.c

@@ -24,6 +24,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/etherdevice.h>
+#include <linux/spinlock.h>
 
 #include "wlcore.h"
 #include "debug.h"
@@ -104,7 +105,7 @@ static void wl1271_tx_regulate_link(struct wl1271 *wl,
 				    struct wl12xx_vif *wlvif,
 				    u8 hlid)
 {
-	bool fw_ps, single_link;
+	bool fw_ps;
 	u8 tx_pkts;
 
 	if (WARN_ON(!test_bit(hlid, wlvif->links_map)))
@@ -112,15 +113,19 @@ static void wl1271_tx_regulate_link(struct wl1271 *wl,
 
 	fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
 	tx_pkts = wl->links[hlid].allocated_pkts;
-	single_link = (wl->active_link_count == 1);
 
 	/*
 	 * if in FW PS and there is enough data in FW we can put the link
 	 * into high-level PS and clean out its TX queues.
 	 * Make an exception if this is the only connected link. In this
 	 * case FW-memory congestion is less of a problem.
+	 * Note that a single connected STA means 3 active links, since we must
+	 * account for the global and broadcast AP links. The "fw_ps" check
+	 * assures us the third link is a STA connected to the AP. Otherwise
+	 * the FW would not set the PSM bit.
 	 */
-	if (!single_link && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
+	if (wl->active_link_count > 3 && fw_ps &&
+	    tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
 		wl12xx_ps_link_start(wl, wlvif, hlid, true);
 }
 
@@ -639,6 +644,7 @@ static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl, u8 *hlid)
 
 	}
 
+out:
 	if (!skb &&
 	    test_and_clear_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags)) {
 		int q;
@@ -652,7 +658,6 @@ static struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl, u8 *hlid)
 		spin_unlock_irqrestore(&wl->wl_lock, flags);
 	}
 
-out:
 	return skb;
 }
 
@@ -928,25 +933,6 @@ static void wl1271_tx_complete_packet(struct wl1271 *wl,
 
 	wl->stats.retry_count += result->ack_failures;
 
-	/*
-	 * update sequence number only when relevant, i.e. only in
-	 * sessions of TKIP, AES and GEM (not in open or WEP sessions)
-	 */
-	if (info->control.hw_key &&
-	    (info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP ||
-	     info->control.hw_key->cipher == WLAN_CIPHER_SUITE_CCMP ||
-	     info->control.hw_key->cipher == WL1271_CIPHER_SUITE_GEM)) {
-		u8 fw_lsb = result->tx_security_sequence_number_lsb;
-		u8 cur_lsb = wlvif->tx_security_last_seq_lsb;
-
-		/*
-		 * update security sequence number, taking care of potential
-		 * wrap-around
-		 */
-		wlvif->tx_security_seq += (fw_lsb - cur_lsb) & 0xff;
-		wlvif->tx_security_last_seq_lsb = fw_lsb;
-	}
-
 	/* remove private header from packet */
 	skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
 
@@ -1061,7 +1047,8 @@ void wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 
 	/* TX failure */
 	for_each_set_bit(i, wlvif->links_map, WL12XX_MAX_LINKS) {
-		if (wlvif->bss_type == BSS_TYPE_AP_BSS) {
+		if (wlvif->bss_type == BSS_TYPE_AP_BSS &&
+		    i != wlvif->ap.bcast_hlid && i != wlvif->ap.global_hlid) {
 			/* this calls wl12xx_free_link */
 			wl1271_free_sta(wl, wlvif, i);
 		} else {
@@ -1304,7 +1291,7 @@ bool wlcore_is_queue_stopped_by_reason_locked(struct wl1271 *wl,
 {
 	int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue);
 
-	WARN_ON_ONCE(!spin_is_locked(&wl->wl_lock));
+	assert_spin_locked(&wl->wl_lock);
 	return test_bit(reason, &wl->queue_stop_reasons[hwq]);
 }
 
@@ -1313,6 +1300,6 @@ bool wlcore_is_queue_stopped_locked(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 {
 	int hwq = wlcore_tx_get_mac80211_queue(wlvif, queue);
 
-	WARN_ON_ONCE(!spin_is_locked(&wl->wl_lock));
+	assert_spin_locked(&wl->wl_lock);
 	return !!wl->queue_stop_reasons[hwq];
 }

drivers/net/wireless/ti/wlcore/wlcore.h

@@ -390,6 +390,9 @@ struct wl1271 {
 	/* number of currently active RX BA sessions */
 	int ba_rx_session_count;
 
+	/* Maximum number of supported RX BA sessions */
+	int ba_rx_session_count_max;
+
 	/* AP-mode - number of currently connected stations */
 	int active_sta_count;
 

drivers/net/wireless/ti/wlcore/wlcore_i.h

@@ -274,6 +274,13 @@ struct wl1271_link {
 
 	/* The wlvif this link belongs to. Might be null for global links */
 	struct wl12xx_vif *wlvif;
+
+	/*
+	 * total freed FW packets on the link - used for tracking the
+	 * AES/TKIP PN across recoveries. Re-initialized each time
+	 * from the wl1271_station structure.
+	 */
+	u64 total_freed_pkts;
 };
 
 #define WL1271_MAX_RX_FILTERS 5
@@ -318,6 +325,13 @@ struct wl12xx_rx_filter {
 struct wl1271_station {
 	u8 hlid;
 	bool in_connection;
+
+	/*
+	 * total freed FW packets on the link to the STA - used for tracking the
+	 * AES/TKIP PN across recoveries. Re-initialized each time from the
+	 * wl1271_station structure.
+	 */
+	u64 total_freed_pkts;
 };
 
 struct wl12xx_vif {
@@ -449,16 +463,15 @@ struct wl12xx_vif {
 	 */
 	struct {
 		u8 persistent[0];
+
 		/*
-		 * Security sequence number
-		 *     bits 0-15: lower 16 bits part of sequence number
-		 *     bits 16-47: higher 32 bits part of sequence number
-		 *     bits 48-63: not in use
+		 * total freed FW packets on the link - used for
+		 * storing the AES/TKIP PN during recovery, as this
+		 * structure is not zeroed out.
+		 * For STA this holds the PN of the link to the AP.
+		 * For AP this holds the PN of the broadcast link.
 		 */
-		u64 tx_security_seq;
-
-		/* 8 bits of the last sequence number in use */
-		u8 tx_security_last_seq_lsb;
+		u64 total_freed_pkts;
 	};
 };