rt2x00: Limit txpower by eeprom values

index 3ed87ba..3cda229 100644
@@ -803,6 +803,18 @@
 #define EDCA_TID_AC_MAP			0x1310
 
 /*
+ * TX_PWR_CFG:
+ */
+#define TX_PWR_CFG_RATE0		FIELD32(0x0000000f)
+#define TX_PWR_CFG_RATE1		FIELD32(0x000000f0)
+#define TX_PWR_CFG_RATE2		FIELD32(0x00000f00)
+#define TX_PWR_CFG_RATE3		FIELD32(0x0000f000)
+#define TX_PWR_CFG_RATE4		FIELD32(0x000f0000)
+#define TX_PWR_CFG_RATE5		FIELD32(0x00f00000)
+#define TX_PWR_CFG_RATE6		FIELD32(0x0f000000)
+#define TX_PWR_CFG_RATE7		FIELD32(0xf0000000)
+
+/*
  * TX_PWR_CFG_0:
  */
 #define TX_PWR_CFG_0			0x1314

@@ -1853,9 +1865,15 @@ struct mac_iveiv_entry {
 #define EEPROM_TXPOWER_A_2		FIELD16(0xff00)
 
 /*
- * EEPROM TXpower byrate: 20MHZ power
+ * EEPROM TXPOWER by rate: tx power per tx rate for HT20 mode
  */
 #define EEPROM_TXPOWER_BYRATE		0x006f
+#define EEPROM_TXPOWER_BYRATE_SIZE	9
+
+#define EEPROM_TXPOWER_BYRATE_RATE0	FIELD16(0x000f)
+#define EEPROM_TXPOWER_BYRATE_RATE1	FIELD16(0x00f0)
+#define EEPROM_TXPOWER_BYRATE_RATE2	FIELD16(0x0f00)
+#define EEPROM_TXPOWER_BYRATE_RATE3	FIELD16(0xf000)
 
 /*
  * EEPROM BBP.

167 lines not on this page · raw message

index 3cda229..edd3734 100644
@@ -74,7 +74,7 @@
  * Signal information.
  * Default offset is required for RSSI <-> dBm conversion.
  */
-#define DEFAULT_RSSI_OFFSET		120 /* FIXME */
+#define DEFAULT_RSSI_OFFSET		120
 
 /*
  * Register layout information.

74 lines not on this page · raw message

index 8313dbf..eb3a4f5 100644
@@ -121,7 +121,7 @@ void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev,
 			const u8 arg0, const u8 arg1);
 
 void rt2800_write_txwi(__le32 *txwi, struct txentry_desc *txdesc);
-void rt2800_process_rxwi(struct sk_buff *skb, struct rxdone_entry_desc *txdesc);
+void rt2800_process_rxwi(struct queue_entry *entry, struct rxdone_entry_desc *txdesc);
 
 void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc);
 

index 6f11760..faf71e2 100644
@@ -805,7 +805,7 @@ static void rt2800pci_fill_rxdone(struct queue_entry *entry,
 	/*
 	 * Process the RXWI structure that is at the start of the buffer.
 	 */
-	rt2800_process_rxwi(entry->skb, rxdesc);
+	rt2800_process_rxwi(entry, rxdesc);
 
 	/*
 	 * Set RX IDX in register to inform hardware that we have handled

index 4f85f7b..f2cd37e 100644
@@ -563,7 +563,7 @@ static void rt2800usb_fill_rxdone(struct queue_entry *entry,
 	/*
 	 * Process the RXWI structure.
 	 */
-	rt2800_process_rxwi(entry->skb, rxdesc);
+	rt2800_process_rxwi(entry, rxdesc);
 }
 
 /*

index 3bedf56..5d5047f 100644
@@ -1399,8 +1399,8 @@ static int rt2400pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Check if the BBP tuning should be enabled.
 	 */
-	if (!rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING))
-		__set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
+	if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING))
+		__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
 
 	return 0;
 }

index 69d231d..1d4758a 100644
@@ -1557,9 +1557,8 @@ static int rt2500pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
 	 * Check if the BBP tuning should be enabled.
 	 */
 	rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
-
-	if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
-		__set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
+	if (!rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
+		__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
 
 	/*
 	 * Read the RSSI <-> dBm offset information.

index 4420552..6e48a15 100644
@@ -1471,13 +1471,6 @@ static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
 		__set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
 
 	/*
-	 * Check if the BBP tuning should be disabled.
-	 */
-	rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
-	if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
-		__set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
-
-	/*
 	 * Read the RSSI <-> dBm offset information.
 	 */
 	rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);

@@ -1743,7 +1736,6 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
 		__set_bit(DRIVER_REQUIRE_COPY_IV, &rt2x00dev->flags);
 	}
-	__set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

index faf71e2..a9eca99 100644
@@ -1037,6 +1037,7 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 	__set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
+	__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

index f2cd37e..e4ab4db 100644
@@ -632,6 +632,7 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	__set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
+	__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

index 788b0e4..42f4661 100644
@@ -646,6 +646,7 @@ enum rt2x00_flags {
 	CONFIG_SUPPORT_HW_CRYPTO,
 	DRIVER_SUPPORT_CONTROL_FILTERS,
 	DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL,
+	DRIVER_SUPPORT_LINK_TUNING,
 
 	/*
 	 * Driver configuration

@@ -655,7 +656,6 @@ enum rt2x00_flags {
 	CONFIG_EXTERNAL_LNA_A,
 	CONFIG_EXTERNAL_LNA_BG,
 	CONFIG_DOUBLE_ANTENNA,
-	CONFIG_DISABLE_LINK_TUNING,
 	CONFIG_CHANNEL_HT40,
 };
 

index 2f8136c..801925b 100644
@@ -359,10 +359,11 @@ static void rt2x00link_tuner(struct work_struct *work)
 		qual->rssi = link->avg_rssi.avg;
 
 	/*
-	 * Only perform the link tuning when Link tuning
-	 * has been enabled (This could have been disabled from the EEPROM).
+	 * Check if link tuning is supported by the hardware, some hardware
+	 * do not support link tuning at all, while other devices can disable
+	 * the feature from the EEPROM.
 	 */
-	if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags))
+	if (test_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags))
 		rt2x00dev->ops->lib->link_tuner(rt2x00dev, qual, link->count);
 
 	/*

index 0123fbc..ee84536 100644
@@ -2690,6 +2690,7 @@ static int rt61pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 	__set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
+	__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

index 286dd97..156f5d3 100644
@@ -2135,6 +2135,7 @@ static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
+	__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

index 5d5047f..d5f1fab 100644
@@ -1567,6 +1567,8 @@ static const struct ieee80211_ops rt2400pci_mac80211_ops = {
 	.config			= rt2x00mac_config,
 	.configure_filter	= rt2x00mac_configure_filter,
 	.set_tim		= rt2x00mac_set_tim,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,
 	.bss_info_changed	= rt2x00mac_bss_info_changed,
 	.conf_tx		= rt2400pci_conf_tx,

index 1d4758a..096d6db 100644
@@ -1864,6 +1864,8 @@ static const struct ieee80211_ops rt2500pci_mac80211_ops = {
 	.config			= rt2x00mac_config,
 	.configure_filter	= rt2x00mac_configure_filter,
 	.set_tim		= rt2x00mac_set_tim,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,
 	.bss_info_changed	= rt2x00mac_bss_info_changed,
 	.conf_tx		= rt2x00mac_conf_tx,

index 6e48a15..0b7888d 100644
@@ -1755,6 +1755,8 @@ static const struct ieee80211_ops rt2500usb_mac80211_ops = {
 	.configure_filter	= rt2x00mac_configure_filter,
 	.set_tim		= rt2x00mac_set_tim,
 	.set_key		= rt2x00mac_set_key,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,
 	.bss_info_changed	= rt2x00mac_bss_info_changed,
 	.conf_tx		= rt2x00mac_conf_tx,

index 255d089..bcf50fc 100644
@@ -2896,6 +2896,8 @@ const struct ieee80211_ops rt2800_mac80211_ops = {
 	.configure_filter	= rt2x00mac_configure_filter,
 	.set_tim		= rt2x00mac_set_tim,
 	.set_key		= rt2x00mac_set_key,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,
 	.get_tkip_seq		= rt2800_get_tkip_seq,
 	.set_rts_threshold	= rt2800_set_rts_threshold,

index 42f4661..bf5e3f3 100644
@@ -628,6 +628,7 @@ enum rt2x00_flags {
 	DEVICE_STATE_INITIALIZED,
 	DEVICE_STATE_STARTED,
 	DEVICE_STATE_ENABLED_RADIO,
+	DEVICE_STATE_SCANNING,
 
 	/*
 	 * Driver requirements

@@ -1081,6 +1082,8 @@ int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 #else
 #define rt2x00mac_set_key	NULL
 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
+void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw);
+void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw);
 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
 			struct ieee80211_low_level_stats *stats);
 void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,

index 801925b..14f1d51 100644
@@ -278,6 +278,15 @@ void rt2x00link_start_tuner(struct rt2x00_dev *rt2x00dev)
 	if (!rt2x00dev->intf_sta_count)
 		return;
 
+	/**
+	 * While scanning, link tuning is disabled. By default
+	 * the most sensitive settings will be used to make sure
+	 * that all beacons and probe responses will be recieved
+	 * during the scan.
+	 */
+	if (test_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags))
+		return;
+
 	rt2x00link_reset_tuner(rt2x00dev, false);
 
 	if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))

@@ -338,7 +347,8 @@ static void rt2x00link_tuner(struct work_struct *work)
 	 * When the radio is shutting down we should
 	 * immediately cease all link tuning.
 	 */
-	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
+	    test_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags))
 		return;
 
 	/*

index 3b838c0..bbce496 100644
@@ -347,9 +347,11 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
 	/*
 	 * Some configuration parameters (e.g. channel and antenna values) can
 	 * only be set when the radio is enabled, but do require the RX to
-	 * be off.
+	 * be off. During this period we should keep link tuning enabled,
+	 * if for any reason the link tuner must be reset, this will be
+	 * handled by rt2x00lib_config().
 	 */
-	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
+	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK);
 
 	/*
 	 * When we've just turned on the radio, we want to reprogram

@@ -367,7 +369,7 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
 	rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant);
 
 	/* Turn RX back on */
-	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
 
 	return 0;
 }

@@ -540,6 +542,22 @@ int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 EXPORT_SYMBOL_GPL(rt2x00mac_set_key);
 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
 
+void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw)
+{
+	struct rt2x00_dev *rt2x00dev = hw->priv;
+	__set_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
+	rt2x00link_stop_tuner(rt2x00dev);
+}
+EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_start);
+
+void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw)
+{
+	struct rt2x00_dev *rt2x00dev = hw->priv;
+	__clear_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
+	rt2x00link_start_tuner(rt2x00dev);
+}
+EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_complete);
+
 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
 			struct ieee80211_low_level_stats *stats)
 {

index ee84536..fe7bce7 100644
@@ -2784,6 +2784,8 @@ static const struct ieee80211_ops rt61pci_mac80211_ops = {
 	.configure_filter	= rt2x00mac_configure_filter,
 	.set_tim		= rt2x00mac_set_tim,
 	.set_key		= rt2x00mac_set_key,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,
 	.bss_info_changed	= rt2x00mac_bss_info_changed,
 	.conf_tx		= rt61pci_conf_tx,

index 156f5d3..9ea6a67 100644
@@ -2229,6 +2229,8 @@ static const struct ieee80211_ops rt73usb_mac80211_ops = {
 	.configure_filter	= rt2x00mac_configure_filter,
 	.set_tim		= rt2x00mac_set_tim,
 	.set_key		= rt2x00mac_set_key,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,
 	.bss_info_changed	= rt2x00mac_bss_info_changed,
 	.conf_tx		= rt73usb_conf_tx,

index d5f1fab..25e9dcf 100644
@@ -586,9 +586,11 @@ static void rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev,
 static inline void rt2400pci_set_vgc(struct rt2x00_dev *rt2x00dev,
 				     struct link_qual *qual, u8 vgc_level)
 {
-	rt2400pci_bbp_write(rt2x00dev, 13, vgc_level);
-	qual->vgc_level = vgc_level;
-	qual->vgc_level_reg = vgc_level;
+	if (qual->vgc_level_reg != vgc_level) {
+		rt2400pci_bbp_write(rt2x00dev, 13, vgc_level);
+		qual->vgc_level = vgc_level;
+		qual->vgc_level_reg = vgc_level;
+	}
 }
 
 static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev,

index 096d6db..faa804c 100644
@@ -626,6 +626,7 @@ static inline void rt2500pci_set_vgc(struct rt2x00_dev *rt2x00dev,
 {
 	if (qual->vgc_level_reg != vgc_level) {
 		rt2500pci_bbp_write(rt2x00dev, 17, vgc_level);
+		qual->vgc_level = vgc_level;
 		qual->vgc_level_reg = vgc_level;
 	}
 }

@@ -700,13 +701,10 @@ dynamic_cca_tune:
 	 * R17 is inside the dynamic tuning range,
 	 * start tuning the link based on the false cca counter.
 	 */
-	if (qual->false_cca > 512 && qual->vgc_level_reg < 0x40) {
+	if (qual->false_cca > 512 && qual->vgc_level_reg < 0x40)
 		rt2500pci_set_vgc(rt2x00dev, qual, ++qual->vgc_level_reg);
-		qual->vgc_level = qual->vgc_level_reg;
-	} else if (qual->false_cca < 100 && qual->vgc_level_reg > 0x32) {
+	else if (qual->false_cca < 100 && qual->vgc_level_reg > 0x32)
 		rt2500pci_set_vgc(rt2x00dev, qual, --qual->vgc_level_reg);
-		qual->vgc_level = qual->vgc_level_reg;
-	}
 }
 
 /*

index 14f1d51..9acfc5c 100644
@@ -302,6 +302,7 @@ void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev)
 void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna)
 {
 	struct link_qual *qual = &rt2x00dev->link.qual;
+	u8 vgc_level = qual->vgc_level_reg;
 
 	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;

@@ -318,6 +319,13 @@ void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna)
 	memset(qual, 0, sizeof(*qual));
 
 	/*
+	 * Restore the VGC level as stored in the registers,
+	 * the driver can use this to determine if the register
+	 * must be updated during reset or not.
+	 */
+	qual->vgc_level_reg = vgc_level;
+
+	/*
 	 * Reset the link tuner.
 	 */
 	rt2x00dev->ops->lib->reset_tuner(rt2x00dev, qual);

index 0b7888d..009323e 100644
@@ -1736,6 +1736,7 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
 		__set_bit(DRIVER_REQUIRE_COPY_IV, &rt2x00dev->flags);
 	}
+	__set_bit(DRIVER_SUPPORT_WATCHDOG, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

@@ -1772,6 +1773,7 @@ static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
 	.rfkill_poll		= rt2500usb_rfkill_poll,
 	.link_stats		= rt2500usb_link_stats,
 	.reset_tuner		= rt2500usb_reset_tuner,
+	.watchdog		= rt2x00usb_watchdog,
 	.write_tx_desc		= rt2500usb_write_tx_desc,
 	.write_beacon		= rt2500usb_write_beacon,
 	.get_tx_data_len	= rt2500usb_get_tx_data_len,

index e4ab4db..5aa7563 100644
@@ -633,6 +633,7 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
 	__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
+	__set_bit(DRIVER_SUPPORT_WATCHDOG, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

@@ -655,6 +656,7 @@ static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
 	.link_stats		= rt2800_link_stats,
 	.reset_tuner		= rt2800_reset_tuner,
 	.link_tuner		= rt2800_link_tuner,
+	.watchdog		= rt2x00usb_watchdog,
 	.write_tx_desc		= rt2800usb_write_tx_desc,
 	.write_tx_data		= rt2800usb_write_tx_data,
 	.write_beacon		= rt2800_write_beacon,

index bf5e3f3..97b6261 100644
@@ -332,6 +332,11 @@ struct link {
 	 * Work structure for scheduling periodic link tuning.
 	 */
 	struct delayed_work work;
+
+	/*
+	 * Work structure for scheduling periodic watchdog monitoring.
+	 */
+	struct delayed_work watchdog_work;
 };
 
 /*

@@ -543,6 +548,7 @@ struct rt2x00lib_ops {
 			     struct link_qual *qual);
 	void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
 			    struct link_qual *qual, const u32 count);
+	void (*watchdog) (struct rt2x00_dev *rt2x00dev);
 
 	/*
 	 * TX control handlers

@@ -648,6 +654,7 @@ enum rt2x00_flags {
 	DRIVER_SUPPORT_CONTROL_FILTERS,
 	DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL,
 	DRIVER_SUPPORT_LINK_TUNING,
+	DRIVER_SUPPORT_WATCHDOG,
 
 	/*
 	 * Driver configuration

index 12ee7bd..0906e14 100644
@@ -70,6 +70,11 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
 	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
 
 	/*
+	 * Start watchdog monitoring.
+	 */
+	rt2x00link_start_watchdog(rt2x00dev);
+
+	/*
 	 * Start the TX queues.
 	 */
 	ieee80211_wake_queues(rt2x00dev->hw);

@@ -89,6 +94,11 @@ void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
 	rt2x00queue_stop_queues(rt2x00dev);
 
 	/*
+	 * Stop watchdog monitoring.
+	 */
+	rt2x00link_stop_watchdog(rt2x00dev);
+
+	/*
 	 * Disable RX.
 	 */
 	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);

index ed27de1..dc5c657 100644
@@ -30,6 +30,7 @@
 /*
  * Interval defines
  */
+#define WATCHDOG_INTERVAL	round_jiffies_relative(HZ)
 #define LINK_TUNE_INTERVAL	round_jiffies_relative(HZ)
 
 /*

@@ -257,11 +258,30 @@ void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev);
 void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna);
 
 /**
- * rt2x00link_register - Initialize link tuning functionality
+ * rt2x00link_start_watchdog - Start periodic watchdog monitoring
  * @rt2x00dev: Pointer to &struct rt2x00_dev.
  *
- * Initialize work structure and all link tuning related
- * parameters. This will not start the link tuning process itself.
+ * This start the watchdog periodic work, this work will
+ *be executed periodically until &rt2x00link_stop_watchdog has
+ * been called.
+ */
+void rt2x00link_start_watchdog(struct rt2x00_dev *rt2x00dev);
+
+/**
+ * rt2x00link_stop_watchdog - Stop periodic watchdog monitoring
+ * @rt2x00dev: Pointer to &struct rt2x00_dev.
+ *
+ * After this function completed the watchdog monitoring will not
+ * be running until &rt2x00link_start_watchdog is called.
+ */
+void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev);
+
+/**
+ * rt2x00link_register - Initialize link tuning & watchdog functionality
+ * @rt2x00dev: Pointer to &struct rt2x00_dev.
+ *
+ * Initialize work structure and all link tuning and watchdog related
+ * parameters. This will not start the periodic work itself.
  */
 void rt2x00link_register(struct rt2x00_dev *rt2x00dev);
 

index 9acfc5c..666cef3 100644
@@ -407,7 +407,45 @@ static void rt2x00link_tuner(struct work_struct *work)
 					     &link->work, LINK_TUNE_INTERVAL);
 }
 
+void rt2x00link_start_watchdog(struct rt2x00_dev *rt2x00dev)
+{
+	struct link *link = &rt2x00dev->link;
+
+	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
+	    !test_bit(DRIVER_SUPPORT_WATCHDOG, &rt2x00dev->flags))
+		return;
+
+	ieee80211_queue_delayed_work(rt2x00dev->hw,
+				     &link->watchdog_work, WATCHDOG_INTERVAL);
+}
+
+void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev)
+{
+	cancel_delayed_work_sync(&rt2x00dev->link.watchdog_work);
+}
+
+static void rt2x00link_watchdog(struct work_struct *work)
+{
+	struct rt2x00_dev *rt2x00dev =
+	    container_of(work, struct rt2x00_dev, link.watchdog_work.work);
+	struct link *link = &rt2x00dev->link;
+
+	/*
+	 * When the radio is shutting down we should
+	 * immediately cease the watchdog monitoring.
+	 */
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+		return;
+
+	rt2x00dev->ops->lib->watchdog(rt2x00dev);
+
+	if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
+		ieee80211_queue_delayed_work(rt2x00dev->hw,
+					     &link->watchdog_work, WATCHDOG_INTERVAL);
+}
+
 void rt2x00link_register(struct rt2x00_dev *rt2x00dev)
 {
+	INIT_DELAYED_WORK(&rt2x00dev->link.watchdog_work, rt2x00link_watchdog);
 	INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00link_tuner);
 }

index 5097fe0..a3401d3 100644
@@ -688,9 +688,11 @@ void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index)
 
 	if (index == Q_INDEX) {
 		queue->length++;
+		queue->last_index = jiffies;
 	} else if (index == Q_INDEX_DONE) {
 		queue->length--;
 		queue->count++;
+		queue->last_index_done = jiffies;
 	}
 
 	spin_unlock_irqrestore(&queue->lock, irqflags);

@@ -704,6 +706,8 @@ static void rt2x00queue_reset(struct data_queue *queue)
 
 	queue->count = 0;
 	queue->length = 0;
+	queue->last_index = jiffies;
+	queue->last_index_done = jiffies;
 	memset(queue->index, 0, sizeof(queue->index));
 
 	spin_unlock_irqrestore(&queue->lock, irqflags);

index bd54f55..191e777 100644
@@ -446,6 +446,8 @@ struct data_queue {
 	enum data_queue_qid qid;
 
 	spinlock_t lock;
+	unsigned long last_index;
+	unsigned long last_index_done;
 	unsigned int count;
 	unsigned short limit;
 	unsigned short threshold;

@@ -599,6 +601,15 @@ static inline int rt2x00queue_threshold(struct data_queue *queue)
 }
 
 /**
+ * rt2x00queue_timeout - Check if a timeout occured for this queue
+ * @queue: Queue to check.
+ */
+static inline int rt2x00queue_timeout(struct data_queue *queue)
+{
+	return time_after(queue->last_index, queue->last_index_done + (HZ / 10));
+}
+
+/**
  * _rt2x00_desc_read - Read a word from the hardware descriptor.
  * @desc: Base descriptor address
  * @word: Word index from where the descriptor should be read.

56 lines not on this page · raw message

index 2b7a188..d3d3ddc 100644
@@ -399,6 +399,16 @@ void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
 void rt2x00usb_kill_tx_queue(struct rt2x00_dev *rt2x00dev,
 			      const enum data_queue_qid qid);
 
+/**
+ * rt2x00usb_watchdog - Watchdog for USB communication
+ * @rt2x00dev: Pointer to &struct rt2x00_dev
+ *
+ * Check the health of the USB communication and determine
+ * if timeouts have occured. If this is the case, this function
+ * will reset all communication to restore functionality again.
+ */
+void rt2x00usb_watchdog(struct rt2x00_dev *rt2x00dev);
+
 /*
  * Device initialization handlers.
  */

index 9ea6a67..cad07b6 100644
@@ -2136,6 +2136,7 @@ static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
 	__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
+	__set_bit(DRIVER_SUPPORT_WATCHDOG, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.

@@ -2251,6 +2252,7 @@ static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {
 	.link_stats		= rt73usb_link_stats,
 	.reset_tuner		= rt73usb_reset_tuner,
 	.link_tuner		= rt73usb_link_tuner,
+	.watchdog		= rt2x00usb_watchdog,
 	.write_tx_desc		= rt73usb_write_tx_desc,
 	.write_beacon		= rt73usb_write_beacon,
 	.get_tx_data_len	= rt73usb_get_tx_data_len,

index bcf50fc..afad3e1 100644
@@ -473,7 +473,7 @@ void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc)
 	dev_kfree_skb_any(entry->skb);
 	entry->skb = NULL;
 }
-EXPORT_SYMBOL(rt2800_write_beacon);
+EXPORT_SYMBOL_GPL(rt2800_write_beacon);
 
 static void inline rt2800_clear_beacon(struct rt2x00_dev *rt2x00dev,
 				       unsigned int beacon_base)

index 25e9dcf..116244b 100644
@@ -879,7 +879,8 @@ static void rt2400pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
 static void rt2400pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
 				 enum dev_state state)
 {
-	int mask = (state == STATE_RADIO_IRQ_OFF);
+	int mask = (state == STATE_RADIO_IRQ_OFF) ||
+		   (state == STATE_RADIO_IRQ_OFF_ISR);
 	u32 reg;
 
 	/*

@@ -980,7 +981,9 @@ static int rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 		rt2400pci_toggle_rx(rt2x00dev, state);
 		break;
 	case STATE_RADIO_IRQ_ON:
+	case STATE_RADIO_IRQ_ON_ISR:
 	case STATE_RADIO_IRQ_OFF:
+	case STATE_RADIO_IRQ_OFF_ISR:
 		rt2400pci_toggle_irq(rt2x00dev, state);
 		break;
 	case STATE_DEEP_SLEEP:

@@ -1235,23 +1238,10 @@ static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev,
 	}
 }
 
-static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
+static irqreturn_t rt2400pci_interrupt_thread(int irq, void *dev_instance)
 {
 	struct rt2x00_dev *rt2x00dev = dev_instance;
-	u32 reg;
-
-	/*
-	 * Get the interrupt sources & saved to local variable.
-	 * Write register value back to clear pending interrupts.
-	 */
-	rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
-	rt2x00pci_register_write(rt2x00dev, CSR7, reg);
-
-	if (!reg)
-		return IRQ_NONE;
-
-	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
-		return IRQ_HANDLED;
+	u32 reg = rt2x00dev->irqvalue[0];
 
 	/*
 	 * Handle interrupts, walk through all bits

@@ -1289,9 +1279,40 @@ static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
 	if (rt2x00_get_field32(reg, CSR7_TXDONE_TXRING))
 		rt2400pci_txdone(rt2x00dev, QID_AC_BK);
 
+	/* Enable interrupts again. */
+	rt2x00dev->ops->lib->set_device_state(rt2x00dev,
+					      STATE_RADIO_IRQ_ON_ISR);
 	return IRQ_HANDLED;
 }
 
+static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
+{
+	struct rt2x00_dev *rt2x00dev = dev_instance;
+	u32 reg;
+
+	/*
+	 * Get the interrupt sources & saved to local variable.
+	 * Write register value back to clear pending interrupts.
+	 */
+	rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
+	rt2x00pci_register_write(rt2x00dev, CSR7, reg);
+
+	if (!reg)
+		return IRQ_NONE;
+
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+		return IRQ_HANDLED;
+
+	/* Store irqvalues for use in the interrupt thread. */
+	rt2x00dev->irqvalue[0] = reg;
+
+	/* Disable interrupts, will be enabled again in the interrupt thread. */
+	rt2x00dev->ops->lib->set_device_state(rt2x00dev,
+					      STATE_RADIO_IRQ_OFF_ISR);
+
+	return IRQ_WAKE_THREAD;
+}
+
 /*
  * Device probe functions.
  */

@@ -1581,6 +1602,7 @@ static const struct ieee80211_ops rt2400pci_mac80211_ops = {
 
 static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
 	.irq_handler		= rt2400pci_interrupt,
+	.irq_handler_thread	= rt2400pci_interrupt_thread,
 	.probe_hw		= rt2400pci_probe_hw,
 	.initialize		= rt2x00pci_initialize,
 	.uninitialize		= rt2x00pci_uninitialize,

91 lines not on this page · raw message

index 009323e..242d595 100644
@@ -1004,7 +1004,9 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 		rt2500usb_toggle_rx(rt2x00dev, state);
 		break;
 	case STATE_RADIO_IRQ_ON:
+	case STATE_RADIO_IRQ_ON_ISR:
 	case STATE_RADIO_IRQ_OFF:
+	case STATE_RADIO_IRQ_OFF_ISR:
 		/* No support, but no error either */
 		break;
 	case STATE_DEEP_SLEEP:

86 lines not on this page · raw message

index 5aa7563..df78e28 100644
@@ -406,7 +406,9 @@ static int rt2800usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 		rt2800usb_toggle_rx(rt2x00dev, state);
 		break;
 	case STATE_RADIO_IRQ_ON:
+	case STATE_RADIO_IRQ_ON_ISR:
 	case STATE_RADIO_IRQ_OFF:
+	case STATE_RADIO_IRQ_OFF_ISR:
 		/* No support, but no error either */
 		break;
 	case STATE_DEEP_SLEEP:

index 97b6261..0fa2141 100644
@@ -515,6 +515,11 @@ struct rt2x00lib_ops {
 	irq_handler_t irq_handler;
 
 	/*
+	 * Threaded Interrupt handlers.
+	 */
+	irq_handler_t irq_handler_thread;
+
+	/*
 	 * Device init handlers.
 	 */
 	int (*probe_hw) (struct rt2x00_dev *rt2x00dev);

@@ -871,6 +876,12 @@ struct rt2x00_dev {
 	const struct firmware *fw;
 
 	/*
+	 * Interrupt values, stored between interrupt service routine
+	 * and interrupt thread routine.
+	 */
+	u32 irqvalue[2];
+
+	/*
 	 * Driver specific data.
 	 */
 	void *priv;

index 0906e14..d3ebb41 100644
@@ -340,9 +340,17 @@ void rt2x00lib_txdone(struct queue_entry *entry,
 	 * send the status report back.
 	 */
 	if (!(skbdesc_flags & SKBDESC_NOT_MAC80211))
-		ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb);
+		/*
+		 * Only PCI and SOC devices process the tx status in process
+		 * context. Hence use ieee80211_tx_status for PCI and SOC
+		 * devices and stick to ieee80211_tx_status_irqsafe for USB.
+		 */
+		if (rt2x00_is_usb(rt2x00dev))
+			ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb);
+		else
+			ieee80211_tx_status(rt2x00dev->hw, entry->skb);
 	else
-		dev_kfree_skb_irq(entry->skb);
+		dev_kfree_skb_any(entry->skb);
 
 	/*
 	 * Make this entry available for reuse.

@@ -489,7 +497,16 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
 	 */
 	rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb);
 	memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status));
-	ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb);
+
+	/*
+	 * Currently only PCI and SOC devices handle rx interrupts in process
+	 * context. Hence, use ieee80211_rx_irqsafe for USB and ieee80211_rx_ni
+	 * for PCI and SOC devices.
+	 */
+	if (rt2x00_is_usb(rt2x00dev))
+		ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb);
+	else
+		ieee80211_rx_ni(rt2x00dev->hw, entry->skb);
 
 	/*
 	 * Replace the skb with the freshly allocated one.

index fc9da83..19b262e 100644
@@ -153,8 +153,10 @@ int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Register interrupt handler.
 	 */
-	status = request_irq(rt2x00dev->irq, rt2x00dev->ops->lib->irq_handler,
-			     IRQF_SHARED, rt2x00dev->name, rt2x00dev);
+	status = request_threaded_irq(rt2x00dev->irq,
+				      rt2x00dev->ops->lib->irq_handler,
+				      rt2x00dev->ops->lib->irq_handler_thread,
+				      IRQF_SHARED, rt2x00dev->name, rt2x00dev);
 	if (status) {
 		ERROR(rt2x00dev, "IRQ %d allocation failed (error %d).\n",
 		      rt2x00dev->irq, status);

index b9fe948..055501c 100644
@@ -88,6 +88,8 @@ enum dev_state {
 	STATE_RADIO_RX_OFF_LINK,
 	STATE_RADIO_IRQ_ON,
 	STATE_RADIO_IRQ_OFF,
+	STATE_RADIO_IRQ_ON_ISR,
+	STATE_RADIO_IRQ_OFF_ISR,
 };
 
 /*

100 lines not on this page · raw message

index cad07b6..aa9de18 100644
@@ -1400,7 +1400,9 @@ static int rt73usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 		rt73usb_toggle_rx(rt2x00dev, state);
 		break;
 	case STATE_RADIO_IRQ_ON:
+	case STATE_RADIO_IRQ_ON_ISR:
 	case STATE_RADIO_IRQ_OFF:
+	case STATE_RADIO_IRQ_OFF_ISR:
 		/* No support, but no error either */
 		break;
 	case STATE_DEEP_SLEEP:

index d3ebb41..e255725 100644
@@ -181,7 +181,7 @@ static void rt2x00lib_intf_scheduled(struct work_struct *work)
 static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
 				      struct ieee80211_vif *vif)
 {
-	struct rt2x00_intf *intf = vif_to_intf(vif);
+	struct rt2x00_dev *rt2x00dev = data;
 
 	if (vif->type != NL80211_IFTYPE_AP &&
 	    vif->type != NL80211_IFTYPE_ADHOC &&

@@ -189,9 +189,7 @@ static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
 	    vif->type != NL80211_IFTYPE_WDS)
 		return;
 
-	spin_lock(&intf->lock);
-	intf->delayed_flags |= DELAYED_UPDATE_BEACON;
-	spin_unlock(&intf->lock);
+	rt2x00queue_update_beacon(rt2x00dev, vif, true);
 }
 
 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)

@@ -199,11 +197,10 @@ void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
 	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;
 
-	ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw,
-						   rt2x00lib_beacondone_iter,
-						   rt2x00dev);
+	ieee80211_iterate_active_interfaces(rt2x00dev->hw,
+					   rt2x00lib_beacondone_iter,
+					   rt2x00dev);
 
-	ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work);
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
 

index bbce496..4d8d232 100644
@@ -433,12 +433,36 @@ void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);
 
+static void rt2x00mac_set_tim_iter(void *data, u8 *mac,
+				   struct ieee80211_vif *vif)
+{
+	struct rt2x00_intf *intf = vif_to_intf(vif);
+
+	if (vif->type != NL80211_IFTYPE_AP &&
+	    vif->type != NL80211_IFTYPE_ADHOC &&
+	    vif->type != NL80211_IFTYPE_MESH_POINT &&
+	    vif->type != NL80211_IFTYPE_WDS)
+		return;
+
+	spin_lock(&intf->lock);
+	intf->delayed_flags |= DELAYED_UPDATE_BEACON;
+	spin_unlock(&intf->lock);
+}
+
 int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
 		      bool set)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 
-	rt2x00lib_beacondone(rt2x00dev);
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+		return 0;
+
+	ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw,
+						   rt2x00mac_set_tim_iter,
+						   rt2x00dev);
+
+	/* queue work to upodate the beacon template */
+	ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_set_tim);

index e255725..ae0adff 100644
@@ -178,6 +178,28 @@ static void rt2x00lib_intf_scheduled(struct work_struct *work)
 /*
  * Interrupt context handlers.
  */
+static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac,
+				     struct ieee80211_vif *vif)
+{
+	struct rt2x00_dev *rt2x00dev = data;
+	struct sk_buff *skb;
+
+	/*
+	 * Only AP mode interfaces do broad- and multicast buffering
+	 */
+	if (vif->type != NL80211_IFTYPE_AP)
+		return;
+
+	/*
+	 * Send out buffered broad- and multicast frames
+	 */
+	skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
+	while (skb) {
+		rt2x00mac_tx(rt2x00dev->hw, skb);
+		skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
+	}
+}
+
 static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
 				      struct ieee80211_vif *vif)
 {

@@ -197,9 +219,15 @@ void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
 	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
 		return;
 
+	/* send buffered bc/mc frames out for every bssid */
 	ieee80211_iterate_active_interfaces(rt2x00dev->hw,
-					   rt2x00lib_beacondone_iter,
-					   rt2x00dev);
+					    rt2x00lib_bc_buffer_iter,
+					    rt2x00dev);
+
+	/* fetch next beacon */
+	ieee80211_iterate_active_interfaces(rt2x00dev->hw,
+					    rt2x00lib_beacondone_iter,
+					    rt2x00dev);
 
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);

index edd3734..dc93e14 100644
@@ -719,14 +719,20 @@
 #define TBTT_TIMER			0x1124
 
 /*
- * INT_TIMER_CFG:
+ * INT_TIMER_CFG: timer configuration
+ * PRE_TBTT_TIMER: leadtime to tbtt for pretbtt interrupt in units of 1/16 TU
+ * GP_TIMER: period of general purpose timer in units of 1/16 TU
  */
 #define INT_TIMER_CFG			0x1128
+#define INT_TIMER_CFG_PRE_TBTT_TIMER	FIELD32(0x0000ffff)
+#define INT_TIMER_CFG_GP_TIMER		FIELD32(0xffff0000)
 
 /*
  * INT_TIMER_EN: GP-timer and pre-tbtt Int enable
  */
 #define INT_TIMER_EN			0x112c
+#define INT_TIMER_EN_PRE_TBTT_TIMER	FIELD32(0x00000001)
+#define INT_TIMER_EN_GP_TIMER		FIELD32(0x00000002)
 
 /*
  * CH_IDLE_STA: channel idle time

index afad3e1..5572732 100644
@@ -807,6 +807,15 @@ void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf,
 		rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE,
 				   (conf->sync == TSF_SYNC_BEACON));
 		rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
+
+		/*
+		 * Enable pre tbtt interrupt for beaconing modes
+		 */
+		rt2800_register_read(rt2x00dev, INT_TIMER_EN, &reg);
+		rt2x00_set_field32(&reg, INT_TIMER_EN_PRE_TBTT_TIMER,
+				   (conf->sync == TSF_SYNC_BEACON));
+		rt2800_register_write(rt2x00dev, INT_TIMER_EN, reg);
+
 	}
 
 	if (flags & CONFIG_UPDATE_MAC) {

@@ -1732,6 +1741,13 @@ int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
 	rt2800_register_read(rt2x00dev, TX_STA_CNT1, &reg);
 	rt2800_register_read(rt2x00dev, TX_STA_CNT2, &reg);
 
+	/*
+	 * Setup leadtime for pre tbtt interrupt to 6ms
+	 */
+	rt2800_register_read(rt2x00dev, INT_TIMER_CFG, &reg);
+	rt2x00_set_field32(&reg, INT_TIMER_CFG_PRE_TBTT_TIMER, 6 << 4);
+	rt2800_register_write(rt2x00dev, INT_TIMER_CFG, reg);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(rt2800_init_registers);

index f21b77c..c0c38f9 100644
@@ -938,20 +938,32 @@ static irqreturn_t rt2800pci_interrupt_thread(int irq, void *dev_instance)
 	u32 reg = rt2x00dev->irqvalue[0];
 
 	/*
-	 * 1 - Rx ring done interrupt.
+	 * 1 - Pre TBTT interrupt.
+	 */
+	if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT))
+		rt2x00lib_pretbtt(rt2x00dev);
+
+	/*
+	 * 2 - Beacondone interrupt.
+	 */
+	if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT))
+		rt2x00lib_beacondone(rt2x00dev);
+
+	/*
+	 * 3 - Rx ring done interrupt.
 	 */
 	if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE))
 		rt2x00pci_rxdone(rt2x00dev);
 
+	/*
+	 * 4 - Tx done interrupt.
+	 */
 	if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS))
 		rt2800pci_txdone(rt2x00dev);
 
 	/*
-	 * Current beacon was sent out, fetch the next one
+	 * 5 - Auto wakeup interrupt.
 	 */
-	if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT))
-		rt2x00lib_beacondone(rt2x00dev);
-
 	if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP))
 		rt2800pci_wakeup(rt2x00dev);
 

@@ -1052,6 +1064,12 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 	__set_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags);
 
 	/*
+	 * This device has a pre tbtt interrupt and thus fetches
+	 * a new beacon directly prior to transmission.
+	 */
+	__set_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags);
+
+	/*
 	 * This device requires firmware.
 	 */
 	if (!rt2x00_is_soc(rt2x00dev))

index 0fa2141..9dd0d17 100644
@@ -658,6 +658,7 @@ enum rt2x00_flags {
 	CONFIG_SUPPORT_HW_CRYPTO,
 	DRIVER_SUPPORT_CONTROL_FILTERS,
 	DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL,
+	DRIVER_SUPPORT_PRE_TBTT_INTERRUPT,
 	DRIVER_SUPPORT_LINK_TUNING,
 	DRIVER_SUPPORT_WATCHDOG,
 

@@ -1071,6 +1072,7 @@ static inline void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
  * Interrupt context handlers.
  */
 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
+void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev);
 void rt2x00lib_txdone(struct queue_entry *entry,
 		      struct txdone_entry_desc *txdesc);
 void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,

index ae0adff..f59b9f7 100644
@@ -200,8 +200,8 @@ static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac,
 	}
 }
 
-static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
-				      struct ieee80211_vif *vif)
+static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac,
+					struct ieee80211_vif *vif)
 {
 	struct rt2x00_dev *rt2x00dev = data;
 

@@ -223,15 +223,33 @@ void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
 	ieee80211_iterate_active_interfaces(rt2x00dev->hw,
 					    rt2x00lib_bc_buffer_iter,
 					    rt2x00dev);
+	/*
+	 * Devices with pre tbtt interrupt don't need to update the beacon
+	 * here as they will fetch the next beacon directly prior to
+	 * transmission.
+	 */
+	if (test_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags))
+		return;
 
 	/* fetch next beacon */
 	ieee80211_iterate_active_interfaces(rt2x00dev->hw,
-					    rt2x00lib_beacondone_iter,
+					    rt2x00lib_beaconupdate_iter,
 					    rt2x00dev);
-
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
 
+void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev)
+{
+	if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+		return;
+
+	/* fetch next beacon */
+	ieee80211_iterate_active_interfaces(rt2x00dev->hw,
+					    rt2x00lib_beaconupdate_iter,
+					    rt2x00dev);
+}
+EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt);
+
 void rt2x00lib_txdone(struct queue_entry *entry,
 		      struct txdone_entry_desc *txdesc)
 {

index 5572732..64bfa6e 100644
@@ -2740,8 +2740,8 @@ EXPORT_SYMBOL_GPL(rt2800_probe_hw_mode);
 /*
  * IEEE80211 stack callback functions.
  */
-static void rt2800_get_tkip_seq(struct ieee80211_hw *hw, u8 hw_key_idx,
-				u32 *iv32, u16 *iv16)
+void rt2800_get_tkip_seq(struct ieee80211_hw *hw, u8 hw_key_idx, u32 *iv32,
+			 u16 *iv16)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	struct mac_iveiv_entry iveiv_entry;

@@ -2754,8 +2754,9 @@ static void rt2800_get_tkip_seq(struct ieee80211_hw *hw, u8 hw_key_idx,
 	memcpy(iv16, &iveiv_entry.iv[0], sizeof(*iv16));
 	memcpy(iv32, &iveiv_entry.iv[4], sizeof(*iv32));
 }
+EXPORT_SYMBOL_GPL(rt2800_get_tkip_seq);
 
-static int rt2800_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+int rt2800_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	u32 reg;

@@ -2791,9 +2792,10 @@ static int rt2800_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(rt2800_set_rts_threshold);
 
-static int rt2800_conf_tx(struct ieee80211_hw *hw, u16 queue_idx,
-			  const struct ieee80211_tx_queue_params *params)
+int rt2800_conf_tx(struct ieee80211_hw *hw, u16 queue_idx,
+		   const struct ieee80211_tx_queue_params *params)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	struct data_queue *queue;

@@ -2858,8 +2860,9 @@ static int rt2800_conf_tx(struct ieee80211_hw *hw, u16 queue_idx,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(rt2800_conf_tx);
 
-static u64 rt2800_get_tsf(struct ieee80211_hw *hw)
+u64 rt2800_get_tsf(struct ieee80211_hw *hw)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	u64 tsf;

@@ -2872,12 +2875,11 @@ static u64 rt2800_get_tsf(struct ieee80211_hw *hw)
 
 	return tsf;
 }
+EXPORT_SYMBOL_GPL(rt2800_get_tsf);
 
-static int rt2800_ampdu_action(struct ieee80211_hw *hw,
-			       struct ieee80211_vif *vif,
-			       enum ieee80211_ampdu_mlme_action action,
-			       struct ieee80211_sta *sta,
-			       u16 tid, u16 *ssn)
+int rt2800_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			enum ieee80211_ampdu_mlme_action action,
+			struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 {
 	int ret = 0;
 

@@ -2901,29 +2903,7 @@ static int rt2800_ampdu_action(struct ieee80211_hw *hw,
 
 	return ret;
 }
-
-const struct ieee80211_ops rt2800_mac80211_ops = {
-	.tx			= rt2x00mac_tx,
-	.start			= rt2x00mac_start,
-	.stop			= rt2x00mac_stop,
-	.add_interface		= rt2x00mac_add_interface,
-	.remove_interface	= rt2x00mac_remove_interface,
-	.config			= rt2x00mac_config,
-	.configure_filter	= rt2x00mac_configure_filter,
-	.set_tim		= rt2x00mac_set_tim,
-	.set_key		= rt2x00mac_set_key,
-	.sw_scan_start		= rt2x00mac_sw_scan_start,
-	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
-	.get_stats		= rt2x00mac_get_stats,
-	.get_tkip_seq		= rt2800_get_tkip_seq,
-	.set_rts_threshold	= rt2800_set_rts_threshold,
-	.bss_info_changed	= rt2x00mac_bss_info_changed,
-	.conf_tx		= rt2800_conf_tx,
-	.get_tsf		= rt2800_get_tsf,
-	.rfkill_poll		= rt2x00mac_rfkill_poll,
-	.ampdu_action		= rt2800_ampdu_action,
-};
-EXPORT_SYMBOL_GPL(rt2800_mac80211_ops);
+EXPORT_SYMBOL_GPL(rt2800_ampdu_action);
 
 MODULE_AUTHOR(DRV_PROJECT ", Bartlomiej Zolnierkiewicz");
 MODULE_VERSION(DRV_VERSION);

index eb3a4f5..10f8f2f 100644
@@ -159,6 +159,14 @@ int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev);
 int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev);
 int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev);
 
-extern const struct ieee80211_ops rt2800_mac80211_ops;
+void rt2800_get_tkip_seq(struct ieee80211_hw *hw, u8 hw_key_idx, u32 *iv32,
+			 u16 *iv16);
+int rt2800_set_rts_threshold(struct ieee80211_hw *hw, u32 value);
+int rt2800_conf_tx(struct ieee80211_hw *hw, u16 queue_idx,
+		   const struct ieee80211_tx_queue_params *params);
+u64 rt2800_get_tsf(struct ieee80211_hw *hw);
+int rt2800_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			enum ieee80211_ampdu_mlme_action action,
+			struct ieee80211_sta *sta, u16 tid, u16 *ssn);
 
 #endif /* RT2800LIB_H */

index c0c38f9..4c138eb 100644
@@ -1088,6 +1088,28 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 	return 0;
 }
 
+static const struct ieee80211_ops rt2800pci_mac80211_ops = {
+	.tx			= rt2x00mac_tx,
+	.start			= rt2x00mac_start,
+	.stop			= rt2x00mac_stop,
+	.add_interface		= rt2x00mac_add_interface,
+	.remove_interface	= rt2x00mac_remove_interface,
+	.config			= rt2x00mac_config,
+	.configure_filter	= rt2x00mac_configure_filter,
+	.set_tim		= rt2x00mac_set_tim,
+	.set_key		= rt2x00mac_set_key,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
+	.get_stats		= rt2x00mac_get_stats,
+	.get_tkip_seq		= rt2800_get_tkip_seq,
+	.set_rts_threshold	= rt2800_set_rts_threshold,
+	.bss_info_changed	= rt2x00mac_bss_info_changed,
+	.conf_tx		= rt2800_conf_tx,
+	.get_tsf		= rt2800_get_tsf,
+	.rfkill_poll		= rt2x00mac_rfkill_poll,
+	.ampdu_action		= rt2800_ampdu_action,
+};
+
 static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
 	.irq_handler		= rt2800pci_interrupt,
 	.irq_handler_thread	= rt2800pci_interrupt_thread,

@@ -1152,7 +1174,7 @@ static const struct rt2x00_ops rt2800pci_ops = {
 	.tx			= &rt2800pci_queue_tx,
 	.bcn			= &rt2800pci_queue_bcn,
 	.lib			= &rt2800pci_rt2x00_ops,
-	.hw			= &rt2800_mac80211_ops,
+	.hw			= &rt2800pci_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 	.debugfs		= &rt2800_rt2x00debug,
 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */

index df78e28..f8eb6d7 100644
@@ -645,6 +645,28 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	return 0;
 }
 
+static const struct ieee80211_ops rt2800usb_mac80211_ops = {
+	.tx			= rt2x00mac_tx,
+	.start			= rt2x00mac_start,
+	.stop			= rt2x00mac_stop,
+	.add_interface		= rt2x00mac_add_interface,
+	.remove_interface	= rt2x00mac_remove_interface,
+	.config			= rt2x00mac_config,
+	.configure_filter	= rt2x00mac_configure_filter,
+	.set_tim		= rt2x00mac_set_tim,
+	.set_key		= rt2x00mac_set_key,
+	.sw_scan_start		= rt2x00mac_sw_scan_start,
+	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
+	.get_stats		= rt2x00mac_get_stats,
+	.get_tkip_seq		= rt2800_get_tkip_seq,
+	.set_rts_threshold	= rt2800_set_rts_threshold,
+	.bss_info_changed	= rt2x00mac_bss_info_changed,
+	.conf_tx		= rt2800_conf_tx,
+	.get_tsf		= rt2800_get_tsf,
+	.rfkill_poll		= rt2x00mac_rfkill_poll,
+	.ampdu_action		= rt2800_ampdu_action,
+};
+
 static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
 	.probe_hw		= rt2800usb_probe_hw,
 	.get_firmware_name	= rt2800usb_get_firmware_name,

@@ -708,7 +730,7 @@ static const struct rt2x00_ops rt2800usb_ops = {
 	.tx			= &rt2800usb_queue_tx,
 	.bcn			= &rt2800usb_queue_bcn,
 	.lib			= &rt2800usb_rt2x00_ops,
-	.hw			= &rt2800_mac80211_ops,
+	.hw			= &rt2800usb_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 	.debugfs		= &rt2800_rt2x00debug,
 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */

index 116244b..5063e01 100644
@@ -1589,7 +1589,6 @@ static const struct ieee80211_ops rt2400pci_mac80211_ops = {
 	.remove_interface	= rt2x00mac_remove_interface,
 	.config			= rt2x00mac_config,
 	.configure_filter	= rt2x00mac_configure_filter,
-	.set_tim		= rt2x00mac_set_tim,
 	.sw_scan_start		= rt2x00mac_sw_scan_start,
 	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,

index 5e80948..c2a555d 100644
@@ -1883,7 +1883,6 @@ static const struct ieee80211_ops rt2500pci_mac80211_ops = {
 	.remove_interface	= rt2x00mac_remove_interface,
 	.config			= rt2x00mac_config,
 	.configure_filter	= rt2x00mac_configure_filter,
-	.set_tim		= rt2x00mac_set_tim,
 	.sw_scan_start		= rt2x00mac_sw_scan_start,
 	.sw_scan_complete	= rt2x00mac_sw_scan_complete,
 	.get_stats		= rt2x00mac_get_stats,

index 4c138eb..520236d 100644
@@ -1096,7 +1096,6 @@ static const struct ieee80211_ops rt2800pci_mac80211_ops = {
 	.remove_interface	= rt2x00mac_remove_interface,
 	.config			= rt2x00mac_config,
 	.configure_filter	= rt2x00mac_configure_filter,
-	.set_tim		= rt2x00mac_set_tim,
 	.set_key		= rt2x00mac_set_key,
 	.sw_scan_start		= rt2x00mac_sw_scan_start,
 	.sw_scan_complete	= rt2x00mac_sw_scan_complete,

index 049433f..e539c6c 100644
@@ -2805,7 +2805,6 @@ static const struct ieee80211_ops rt61pci_mac80211_ops = {
 	.remove_interface	= rt2x00mac_remove_interface,
 	.config			= rt2x00mac_config,
 	.configure_filter	= rt2x00mac_configure_filter,
-	.set_tim		= rt2x00mac_set_tim,
 	.set_key		= rt2x00mac_set_key,
 	.sw_scan_start		= rt2x00mac_sw_scan_start,
 	.sw_scan_complete	= rt2x00mac_sw_scan_complete,

index 64bfa6e..cfe199b 100644
@@ -1419,7 +1419,7 @@ int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
 	rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0x00000000);
 
 	rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
-	rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_INTERVAL, 0);
+	rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_INTERVAL, 1600);
 	rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 0);
 	rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_SYNC, 0);
 	rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 0);

index cfe199b..9587236 100644
@@ -805,7 +805,8 @@ void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf,
 		rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 1);
 		rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_SYNC, conf->sync);
 		rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE,
-				   (conf->sync == TSF_SYNC_BEACON));
+				   (conf->sync == TSF_SYNC_ADHOC ||
+				    conf->sync == TSF_SYNC_AP_NONE));
 		rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
 
 		/*

@@ -813,7 +814,7 @@ void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf,
 		 */
 		rt2800_register_read(rt2x00dev, INT_TIMER_EN, &reg);
 		rt2x00_set_field32(&reg, INT_TIMER_EN_PRE_TBTT_TIMER,
-				   (conf->sync == TSF_SYNC_BEACON));
+				   (conf->sync == TSF_SYNC_AP_NONE));
 		rt2800_register_write(rt2x00dev, INT_TIMER_EN, reg);
 
 	}

index 8dbd634..953dc4f 100644
@@ -41,10 +41,12 @@ void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev,
 
 	switch (type) {
 	case NL80211_IFTYPE_ADHOC:
+		conf.sync = TSF_SYNC_ADHOC;
+		break;
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_MESH_POINT:
 	case NL80211_IFTYPE_WDS:
-		conf.sync = TSF_SYNC_BEACON;
+		conf.sync = TSF_SYNC_AP_NONE;
 		break;
 	case NL80211_IFTYPE_STATION:
 		conf.sync = TSF_SYNC_INFRA;

index 055501c..cef9462 100644
@@ -63,7 +63,8 @@ enum led_mode {
 enum tsf_sync {
 	TSF_SYNC_NONE = 0,
 	TSF_SYNC_INFRA = 1,
-	TSF_SYNC_BEACON = 2,
+	TSF_SYNC_ADHOC = 2,
+	TSF_SYNC_AP_NONE = 3,
 };
 
 /*

index 9587236..b66e0fd 100644
@@ -33,6 +33,7 @@
 	Abstract: rt2800 generic device routines.
  */
 
+#include <linux/crc-ccitt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>

@@ -272,6 +273,160 @@ int rt2800_wait_wpdma_ready(struct rt2x00_dev *rt2x00dev)
 }
 EXPORT_SYMBOL_GPL(rt2800_wait_wpdma_ready);
 
+static bool rt2800_check_firmware_crc(const u8 *data, const size_t len)
+{
+	u16 fw_crc;
+	u16 crc;
+
+	/*
+	 * The last 2 bytes in the firmware array are the crc checksum itself,
+	 * this means that we should never pass those 2 bytes to the crc
+	 * algorithm.
+	 */
+	fw_crc = (data[len - 2] << 8 | data[len - 1]);
+
+	/*
+	 * Use the crc ccitt algorithm.
+	 * This will return the same value as the legacy driver which
+	 * used bit ordering reversion on the both the firmware bytes
+	 * before input input as well as on the final output.
+	 * Obviously using crc ccitt directly is much more efficient.
+	 */
+	crc = crc_ccitt(~0, data, len - 2);
+
+	/*
+	 * There is a small difference between the crc-itu-t + bitrev and
+	 * the crc-ccitt crc calculation. In the latter method the 2 bytes
+	 * will be swapped, use swab16 to convert the crc to the correct
+	 * value.
+	 */
+	crc = swab16(crc);
+
+	return fw_crc == crc;
+}
+
+int rt2800_check_firmware(struct rt2x00_dev *rt2x00dev,
+			  const u8 *data, const size_t len)
+{
+	size_t offset = 0;
+	size_t fw_len;
+	bool multiple;
+
+	/*
+	 * PCI(e) & SOC devices require firmware with a length
+	 * of 8kb. USB devices require firmware files with a length
+	 * of 4kb. Certain USB chipsets however require different firmware,
+	 * which Ralink only provides attached to the original firmware
+	 * file. Thus for USB devices, firmware files have a length
+	 * which is a multiple of 4kb.
+	 */
+	if (rt2x00_is_usb(rt2x00dev)) {
+		fw_len = 4096;
+		multiple = true;
+	} else {
+		fw_len = 8192;
+		multiple = true;
+	}
+
+	/*
+	 * Validate the firmware length
+	 */
+	if (len != fw_len && (!multiple || (len % fw_len) != 0))
+		return FW_BAD_LENGTH;
+
+	/*
+	 * Check if the chipset requires one of the upper parts
+	 * of the firmware.
+	 */
+	if (rt2x00_is_usb(rt2x00dev) &&
+	    !rt2x00_rt(rt2x00dev, RT2860) &&
+	    !rt2x00_rt(rt2x00dev, RT2872) &&
+	    !rt2x00_rt(rt2x00dev, RT3070) &&
+	    ((len / fw_len) == 1))
+		return FW_BAD_VERSION;
+
+	/*
+	 * 8kb firmware files must be checked as if it were
+	 * 2 separate firmware files.
+	 */
+	while (offset < len) {
+		if (!rt2800_check_firmware_crc(data + offset, fw_len))
+			return FW_BAD_CRC;
+
+		offset += fw_len;
+	}
+
+	return FW_OK;
+}
+EXPORT_SYMBOL_GPL(rt2800_check_firmware);
+
+int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
+			 const u8 *data, const size_t len)
+{
+	unsigned int i;
+	u32 reg;
+
+	/*
+	 * Wait for stable hardware.
+	 */
+	for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
+		rt2800_register_read(rt2x00dev, MAC_CSR0, &reg);
+		if (reg && reg != ~0)
+			break;
+		msleep(1);
+	}
+
+	if (i == REGISTER_BUSY_COUNT) {
+		ERROR(rt2x00dev, "Unstable hardware.\n");
+		return -EBUSY;
+	}
+
+	if (rt2x00_is_pci(rt2x00dev))
+		rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000002);
+
+	/*
+	 * Disable DMA, will be reenabled later when enabling
+	 * the radio.
+	 */
+	rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
+	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
+	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_DMA_BUSY, 0);
+	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
+	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_DMA_BUSY, 0);
+	rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
+	rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
+
+	/*
+	 * Write firmware to the device.
+	 */
+	rt2800_drv_write_firmware(rt2x00dev, data, len);
+
+	/*
+	 * Wait for device to stabilize.
+	 */
+	for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
+		rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
+		if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY))
+			break;
+		msleep(1);
+	}
+
+	if (i == REGISTER_BUSY_COUNT) {
+		ERROR(rt2x00dev, "PBF system register not ready.\n");
+		return -EBUSY;
+	}
+
+	/*
+	 * Initialize firmware.
+	 */
+	rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
+	rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
+	msleep(1);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(rt2800_load_firmware);
+
 void rt2800_write_txwi(__le32 *txwi, struct txentry_desc *txdesc)
 {
 	u32 word;

index 10f8f2f..cecbd3a 100644
@@ -41,6 +41,8 @@ struct rt2800_ops {
 			    const unsigned int offset,
 			    const struct rt2x00_field32 field, u32 *reg);
 
+	int (*drv_write_firmware)(struct rt2x00_dev *rt2x00dev,
+				  const u8 *data, const size_t len);
 	int (*drv_init_registers)(struct rt2x00_dev *rt2x00dev);
 };
 

@@ -109,6 +111,14 @@ static inline int rt2800_regbusy_read(struct rt2x00_dev *rt2x00dev,
 	return rt2800ops->regbusy_read(rt2x00dev, offset, field, reg);
 }
 
+static inline int rt2800_drv_write_firmware(struct rt2x00_dev *rt2x00dev,
+					    const u8 *data, const size_t len)
+{
+	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+
+	return rt2800ops->drv_write_firmware(rt2x00dev, data, len);
+}
+
 static inline int rt2800_drv_init_registers(struct rt2x00_dev *rt2x00dev)
 {
 	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;

@@ -120,6 +130,11 @@ void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev,
 			const u8 command, const u8 token,
 			const u8 arg0, const u8 arg1);
 
+int rt2800_check_firmware(struct rt2x00_dev *rt2x00dev,
+			  const u8 *data, const size_t len);
+int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
+			 const u8 *data, const size_t len);
+
 void rt2800_write_txwi(__le32 *txwi, struct txentry_desc *txdesc);
 void rt2800_process_rxwi(struct queue_entry *entry, struct rxdone_entry_desc *txdesc);
 

142 lines not on this page · raw message

158 lines not on this page · raw message

index cecbd3a..091641e 100644
@@ -50,7 +50,7 @@ static inline void rt2800_register_read(struct rt2x00_dev *rt2x00dev,
 					const unsigned int offset,
 					u32 *value)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	rt2800ops->register_read(rt2x00dev, offset, value);
 }

@@ -59,7 +59,7 @@ static inline void rt2800_register_read_lock(struct rt2x00_dev *rt2x00dev,
 					     const unsigned int offset,
 					     u32 *value)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	rt2800ops->register_read_lock(rt2x00dev, offset, value);
 }

@@ -68,7 +68,7 @@ static inline void rt2800_register_write(struct rt2x00_dev *rt2x00dev,
 					 const unsigned int offset,
 					 u32 value)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	rt2800ops->register_write(rt2x00dev, offset, value);
 }

@@ -77,7 +77,7 @@ static inline void rt2800_register_write_lock(struct rt2x00_dev *rt2x00dev,
 					      const unsigned int offset,
 					      u32 value)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	rt2800ops->register_write_lock(rt2x00dev, offset, value);
 }

@@ -86,7 +86,7 @@ static inline void rt2800_register_multiread(struct rt2x00_dev *rt2x00dev,
 					     const unsigned int offset,
 					     void *value, const u32 length)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	rt2800ops->register_multiread(rt2x00dev, offset, value, length);
 }

@@ -96,7 +96,7 @@ static inline void rt2800_register_multiwrite(struct rt2x00_dev *rt2x00dev,
 					      const void *value,
 					      const u32 length)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	rt2800ops->register_multiwrite(rt2x00dev, offset, value, length);
 }

@@ -106,7 +106,7 @@ static inline int rt2800_regbusy_read(struct rt2x00_dev *rt2x00dev,
 				      const struct rt2x00_field32 field,
 				      u32 *reg)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	return rt2800ops->regbusy_read(rt2x00dev, offset, field, reg);
 }

@@ -114,14 +114,14 @@ static inline int rt2800_regbusy_read(struct rt2x00_dev *rt2x00dev,
 static inline int rt2800_drv_write_firmware(struct rt2x00_dev *rt2x00dev,
 					    const u8 *data, const size_t len)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	return rt2800ops->drv_write_firmware(rt2x00dev, data, len);
 }
 
 static inline int rt2800_drv_init_registers(struct rt2x00_dev *rt2x00dev)
 {
-	const struct rt2800_ops *rt2800ops = rt2x00dev->priv;
+	const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
 	return rt2800ops->drv_init_registers(rt2x00dev);
 }

index 0fdd58b..39b3846 100644
@@ -926,27 +926,10 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 	return rt2800_validate_eeprom(rt2x00dev);
 }
 
-static const struct rt2800_ops rt2800pci_rt2800_ops = {
-	.register_read		= rt2x00pci_register_read,
-	.register_read_lock	= rt2x00pci_register_read, /* same for PCI */
-	.register_write		= rt2x00pci_register_write,
-	.register_write_lock	= rt2x00pci_register_write, /* same for PCI */
-
-	.register_multiread	= rt2x00pci_register_multiread,
-	.register_multiwrite	= rt2x00pci_register_multiwrite,
-
-	.regbusy_read		= rt2x00pci_regbusy_read,
-
-	.drv_write_firmware	= rt2800pci_write_firmware,
-	.drv_init_registers	= rt2800pci_init_registers,
-};
-
 static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 {
 	int retval;
 
-	rt2x00dev->priv = (void *)&rt2800pci_rt2800_ops;
-
 	/*
 	 * Allocate eeprom data.
 	 */

@@ -1018,6 +1001,18 @@ static const struct ieee80211_ops rt2800pci_mac80211_ops = {
 	.ampdu_action		= rt2800_ampdu_action,
 };
 
+static const struct rt2800_ops rt2800pci_rt2800_ops = {
+	.register_read		= rt2x00pci_register_read,
+	.register_read_lock	= rt2x00pci_register_read, /* same for PCI */
+	.register_write		= rt2x00pci_register_write,
+	.register_write_lock	= rt2x00pci_register_write, /* same for PCI */
+	.register_multiread	= rt2x00pci_register_multiread,
+	.register_multiwrite	= rt2x00pci_register_multiwrite,
+	.regbusy_read		= rt2x00pci_regbusy_read,
+	.drv_write_firmware	= rt2800pci_write_firmware,
+	.drv_init_registers	= rt2800pci_init_registers,
+};
+
 static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
 	.irq_handler		= rt2800pci_interrupt,
 	.irq_handler_thread	= rt2800pci_interrupt_thread,

@@ -1082,6 +1077,7 @@ static const struct rt2x00_ops rt2800pci_ops = {
 	.tx			= &rt2800pci_queue_tx,
 	.bcn			= &rt2800pci_queue_bcn,
 	.lib			= &rt2800pci_rt2x00_ops,
+	.drv			= &rt2800pci_rt2800_ops,
 	.hw			= &rt2800pci_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 	.debugfs		= &rt2800_rt2x00debug,

index 7b8d51f..5a2dfe8 100644
@@ -470,27 +470,10 @@ static int rt2800usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 	return rt2800_validate_eeprom(rt2x00dev);
 }
 
-static const struct rt2800_ops rt2800usb_rt2800_ops = {
-	.register_read		= rt2x00usb_register_read,
-	.register_read_lock	= rt2x00usb_register_read_lock,
-	.register_write		= rt2x00usb_register_write,
-	.register_write_lock	= rt2x00usb_register_write_lock,
-
-	.register_multiread	= rt2x00usb_register_multiread,
-	.register_multiwrite	= rt2x00usb_register_multiwrite,
-
-	.regbusy_read		= rt2x00usb_regbusy_read,
-
-	.drv_write_firmware	= rt2800usb_write_firmware,
-	.drv_init_registers	= rt2800usb_init_registers,
-};
-
 static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 {
 	int retval;
 
-	rt2x00dev->priv = (void *)&rt2800usb_rt2800_ops;
-
 	/*
 	 * Allocate eeprom data.
 	 */

@@ -556,6 +539,18 @@ static const struct ieee80211_ops rt2800usb_mac80211_ops = {
 	.ampdu_action		= rt2800_ampdu_action,
 };
 
+static const struct rt2800_ops rt2800usb_rt2800_ops = {
+	.register_read		= rt2x00usb_register_read,
+	.register_read_lock	= rt2x00usb_register_read_lock,
+	.register_write		= rt2x00usb_register_write,
+	.register_write_lock	= rt2x00usb_register_write_lock,
+	.register_multiread	= rt2x00usb_register_multiread,
+	.register_multiwrite	= rt2x00usb_register_multiwrite,
+	.regbusy_read		= rt2x00usb_regbusy_read,
+	.drv_write_firmware	= rt2800usb_write_firmware,
+	.drv_init_registers	= rt2800usb_init_registers,
+};
+
 static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
 	.probe_hw		= rt2800usb_probe_hw,
 	.get_firmware_name	= rt2800usb_get_firmware_name,

@@ -619,6 +614,7 @@ static const struct rt2x00_ops rt2800usb_ops = {
 	.tx			= &rt2800usb_queue_tx,
 	.bcn			= &rt2800usb_queue_bcn,
 	.lib			= &rt2800usb_rt2x00_ops,
+	.drv			= &rt2800usb_rt2800_ops,
 	.hw			= &rt2800usb_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 	.debugfs		= &rt2800_rt2x00debug,

index 9dd0d17..c21af38 100644
@@ -621,6 +621,7 @@ struct rt2x00_ops {
 	const struct data_queue_desc *bcn;
 	const struct data_queue_desc *atim;
 	const struct rt2x00lib_ops *lib;
+	const void *drv;
 	const struct ieee80211_ops *hw;
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 	const struct rt2x00debug *debugfs;

@@ -881,11 +882,6 @@ struct rt2x00_dev {
 	 * and interrupt thread routine.
 	 */
 	u32 irqvalue[2];
-
-	/*
-	 * Driver specific data.
-	 */
-	void *priv;
 };
 
 /*