Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

Conflicts:
	drivers/net/wireless/iwlwifi/iwl-core.h

7 files changed, 195 insertions, 41 deletions

diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index 6a2a96761111..66bcb506a112 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -1063,6 +1063,7 @@ struct ath5k_hw {
         u32                     ah_cw_min;
         u32                     ah_cw_max;
         u32                     ah_limit_tx_retries;
+        u8                      ah_coverage_class;
 
         /* Antenna Control */
         u32                     ah_ant_ctl[AR5K_EEPROM_N_MODES][AR5K_ANT_MAX];
@@ -1200,6 +1201,7 @@ extern bool ath5k_eeprom_is_hb63(struct ath5k_hw *ah);
 
 /* Protocol Control Unit Functions */
 extern int ath5k_hw_set_opmode(struct ath5k_hw *ah);
+extern void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class);
 /* BSSID Functions */
 extern int ath5k_hw_set_lladdr(struct ath5k_hw *ah, const u8 *mac);
 extern void ath5k_hw_set_associd(struct ath5k_hw *ah);
@@ -1231,6 +1233,10 @@ extern int ath5k_hw_set_ack_timeout(struct ath5k_hw *ah, unsigned int timeout);
 extern unsigned int ath5k_hw_get_ack_timeout(struct ath5k_hw *ah);
 extern int ath5k_hw_set_cts_timeout(struct ath5k_hw *ah, unsigned int timeout);
 extern unsigned int ath5k_hw_get_cts_timeout(struct ath5k_hw *ah);
+/* Clock rate related functions */
+unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec);
+unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock);
+unsigned int ath5k_hw_get_clockrate(struct ath5k_hw *ah);
 /* Key table (WEP) functions */
 extern int ath5k_hw_reset_key(struct ath5k_hw *ah, u16 entry);
 extern int ath5k_hw_is_key_valid(struct ath5k_hw *ah, u16 entry);
@@ -1310,24 +1316,6 @@ extern int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower);
  * Functions used internaly
  */
 
-/*
- * Translate usec to hw clock units
- * TODO: Half/quarter rate
- */
-static inline unsigned int ath5k_hw_htoclock(unsigned int usec, bool turbo)
-{
-        return turbo ? (usec * 80) : (usec * 40);
-}
-
-/*
- * Translate hw clock units to usec
- * TODO: Half/quarter rate
- */
-static inline unsigned int ath5k_hw_clocktoh(unsigned int clock, bool turbo)
-{
-        return turbo ? (clock / 80) : (clock / 40);
-}
-
 static inline struct ath_common *ath5k_hw_common(struct ath5k_hw *ah)
 {
         return &ah->common;
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 72e5ed51c0af..5577bcc80eac 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -254,6 +254,8 @@ static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
                 u32 changes);
 static void ath5k_sw_scan_start(struct ieee80211_hw *hw);
 static void ath5k_sw_scan_complete(struct ieee80211_hw *hw);
+static void ath5k_set_coverage_class(struct ieee80211_hw *hw,
+                u8 coverage_class);
 
 static const struct ieee80211_ops ath5k_hw_ops = {
         .tx             = ath5k_tx,
@@ -274,6 +276,7 @@ static const struct ieee80211_ops ath5k_hw_ops = {
         .bss_info_changed = ath5k_bss_info_changed,
         .sw_scan_start  = ath5k_sw_scan_start,
         .sw_scan_complete = ath5k_sw_scan_complete,
+        .set_coverage_class = ath5k_set_coverage_class,
 };
 
 /*
@@ -3262,3 +3265,22 @@ static void ath5k_sw_scan_complete(struct ieee80211_hw *hw)
         ath5k_hw_set_ledstate(sc->ah, sc->assoc ?
                 AR5K_LED_ASSOC : AR5K_LED_INIT);
 }
+
+/**
+ * ath5k_set_coverage_class - Set IEEE 802.11 coverage class
+ *
+ * @hw: struct ieee80211_hw pointer
+ * @coverage_class: IEEE 802.11 coverage class number
+ *
+ * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given
+ * coverage class. The values are persistent, they are restored after device
+ * reset.
+ */
+static void ath5k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
+{
+        struct ath5k_softc *sc = hw->priv;
+
+        mutex_lock(&sc->lock);
+        ath5k_hw_set_coverage_class(sc->ah, coverage_class);
+        mutex_unlock(&sc->lock);
+}
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 5d1c8677f180..6a3f4da7fb48 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -97,7 +97,7 @@ ath5k_eeprom_init_header(struct ath5k_hw *ah)
         struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
         int ret;
         u16 val;
-        u32 cksum, offset;
+        u32 cksum, offset, eep_max = AR5K_EEPROM_INFO_MAX;
 
         /*
          * Read values from EEPROM and store them in the capability structure
@@ -116,12 +116,38 @@ ath5k_eeprom_init_header(struct ath5k_hw *ah)
          * Validate the checksum of the EEPROM date. There are some
          * devices with invalid EEPROMs.
          */
-        for (cksum = 0, offset = 0; offset < AR5K_EEPROM_INFO_MAX; offset++) {
+        AR5K_EEPROM_READ(AR5K_EEPROM_SIZE_UPPER, val);
+        if (val) {
+                eep_max = (val & AR5K_EEPROM_SIZE_UPPER_MASK) <<
+                           AR5K_EEPROM_SIZE_ENDLOC_SHIFT;
+                AR5K_EEPROM_READ(AR5K_EEPROM_SIZE_LOWER, val);
+                eep_max = (eep_max | val) - AR5K_EEPROM_INFO_BASE;
+
+                /*
+                 * Fail safe check to prevent stupid loops due
+                 * to busted EEPROMs. XXX: This value is likely too
+                 * big still, waiting on a better value.
+                 */
+                if (eep_max > (3 * AR5K_EEPROM_INFO_MAX)) {
+                        ATH5K_ERR(ah->ah_sc, "Invalid max custom EEPROM size: "
+                                  "%d (0x%04x) max expected: %d (0x%04x)\n",
+                                  eep_max, eep_max,
+                                  3 * AR5K_EEPROM_INFO_MAX,
+                                  3 * AR5K_EEPROM_INFO_MAX);
+                        return -EIO;
+                }
+        }
+
+        for (cksum = 0, offset = 0; offset < eep_max; offset++) {
                 AR5K_EEPROM_READ(AR5K_EEPROM_INFO(offset), val);
                 cksum ^= val;
         }
         if (cksum != AR5K_EEPROM_INFO_CKSUM) {
-                ATH5K_ERR(ah->ah_sc, "Invalid EEPROM checksum 0x%04x\n", cksum);
+                ATH5K_ERR(ah->ah_sc, "Invalid EEPROM "
+                          "checksum: 0x%04x eep_max: 0x%04x (%s)\n",
+                          cksum, eep_max,
+                          eep_max == AR5K_EEPROM_INFO_MAX ?
+                                "default size" : "custom size");
                 return -EIO;
         }
 
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.h b/drivers/net/wireless/ath/ath5k/eeprom.h
index 0123f3521a0b..473a483bb9c3 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.h
+++ b/drivers/net/wireless/ath/ath5k/eeprom.h
@@ -37,6 +37,14 @@
 #define AR5K_EEPROM_RFKILL_POLARITY_S   1
 
 #define AR5K_EEPROM_REG_DOMAIN          0x00bf  /* EEPROM regdom */
+
+/* FLASH(EEPROM) Defines for AR531X chips */
+#define AR5K_EEPROM_SIZE_LOWER          0x1b /* size info -- lower */
+#define AR5K_EEPROM_SIZE_UPPER          0x1c /* size info -- upper */
+#define AR5K_EEPROM_SIZE_UPPER_MASK     0xfff0
+#define AR5K_EEPROM_SIZE_UPPER_SHIFT    4
+#define AR5K_EEPROM_SIZE_ENDLOC_SHIFT   12
+
 #define AR5K_EEPROM_CHECKSUM            0x00c0  /* EEPROM checksum */
 #define AR5K_EEPROM_INFO_BASE           0x00c0  /* EEPROM header */
 #define AR5K_EEPROM_INFO_MAX            (0x400 - AR5K_EEPROM_INFO_BASE)
diff --git a/drivers/net/wireless/ath/ath5k/pcu.c b/drivers/net/wireless/ath/ath5k/pcu.c
index 64fc1eb9b6d9..aefe84f9c04b 100644
--- a/drivers/net/wireless/ath/ath5k/pcu.c
+++ b/drivers/net/wireless/ath/ath5k/pcu.c
@@ -187,8 +187,8 @@ unsigned int ath5k_hw_get_ack_timeout(struct ath5k_hw *ah)
 {
         ATH5K_TRACE(ah->ah_sc);
 
-        return ath5k_hw_clocktoh(AR5K_REG_MS(ath5k_hw_reg_read(ah,
-                        AR5K_TIME_OUT), AR5K_TIME_OUT_ACK), ah->ah_turbo);
+        return ath5k_hw_clocktoh(ah, AR5K_REG_MS(ath5k_hw_reg_read(ah,
+                        AR5K_TIME_OUT), AR5K_TIME_OUT_ACK));
 }
 
 /**
@@ -200,12 +200,12 @@ unsigned int ath5k_hw_get_ack_timeout(struct ath5k_hw *ah)
 int ath5k_hw_set_ack_timeout(struct ath5k_hw *ah, unsigned int timeout)
 {
         ATH5K_TRACE(ah->ah_sc);
-        if (ath5k_hw_clocktoh(AR5K_REG_MS(0xffffffff, AR5K_TIME_OUT_ACK),
-                        ah->ah_turbo) <= timeout)
+        if (ath5k_hw_clocktoh(ah, AR5K_REG_MS(0xffffffff, AR5K_TIME_OUT_ACK))
+                        <= timeout)
                 return -EINVAL;
 
         AR5K_REG_WRITE_BITS(ah, AR5K_TIME_OUT, AR5K_TIME_OUT_ACK,
-                ath5k_hw_htoclock(timeout, ah->ah_turbo));
+                ath5k_hw_htoclock(ah, timeout));
 
         return 0;
 }
@@ -218,8 +218,8 @@ int ath5k_hw_set_ack_timeout(struct ath5k_hw *ah, unsigned int timeout)
 unsigned int ath5k_hw_get_cts_timeout(struct ath5k_hw *ah)
 {
         ATH5K_TRACE(ah->ah_sc);
-        return ath5k_hw_clocktoh(AR5K_REG_MS(ath5k_hw_reg_read(ah,
-                        AR5K_TIME_OUT), AR5K_TIME_OUT_CTS), ah->ah_turbo);
+        return ath5k_hw_clocktoh(ah, AR5K_REG_MS(ath5k_hw_reg_read(ah,
+                        AR5K_TIME_OUT), AR5K_TIME_OUT_CTS));
 }
 
 /**
@@ -231,17 +231,97 @@ unsigned int ath5k_hw_get_cts_timeout(struct ath5k_hw *ah)
 int ath5k_hw_set_cts_timeout(struct ath5k_hw *ah, unsigned int timeout)
 {
         ATH5K_TRACE(ah->ah_sc);
-        if (ath5k_hw_clocktoh(AR5K_REG_MS(0xffffffff, AR5K_TIME_OUT_CTS),
-                        ah->ah_turbo) <= timeout)
+        if (ath5k_hw_clocktoh(ah, AR5K_REG_MS(0xffffffff, AR5K_TIME_OUT_CTS))
+                        <= timeout)
                 return -EINVAL;
 
         AR5K_REG_WRITE_BITS(ah, AR5K_TIME_OUT, AR5K_TIME_OUT_CTS,
-                        ath5k_hw_htoclock(timeout, ah->ah_turbo));
+                        ath5k_hw_htoclock(ah, timeout));
 
         return 0;
 }
 
 /**
+ * ath5k_hw_htoclock - Translate usec to hw clock units
+ *
+ * @ah: The &struct ath5k_hw
+ * @usec: value in microseconds
+ */
+unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec)
+{
+        return usec * ath5k_hw_get_clockrate(ah);
+}
+
+/**
+ * ath5k_hw_clocktoh - Translate hw clock units to usec
+ * @clock: value in hw clock units
+ */
+unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock)
+{
+        return clock / ath5k_hw_get_clockrate(ah);
+}
+
+/**
+ * ath5k_hw_get_clockrate - Get the clock rate for current mode
+ *
+ * @ah: The &struct ath5k_hw
+ */
+unsigned int ath5k_hw_get_clockrate(struct ath5k_hw *ah)
+{
+        struct ieee80211_channel *channel = ah->ah_current_channel;
+        int clock;
+
+        if (channel->hw_value & CHANNEL_5GHZ)
+                clock = 40; /* 802.11a */
+        else if (channel->hw_value & CHANNEL_CCK)
+                clock = 22; /* 802.11b */
+        else
+                clock = 44; /* 802.11g */
+
+        /* Clock rate in turbo modes is twice the normal rate */
+        if (channel->hw_value & CHANNEL_TURBO)
+                clock *= 2;
+
+        return clock;
+}
+
+/**
+ * ath5k_hw_get_default_slottime - Get the default slot time for current mode
+ *
+ * @ah: The &struct ath5k_hw
+ */
+unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah)
+{
+        struct ieee80211_channel *channel = ah->ah_current_channel;
+
+        if (channel->hw_value & CHANNEL_TURBO)
+                return 6; /* both turbo modes */
+
+        if (channel->hw_value & CHANNEL_CCK)
+                return 20; /* 802.11b */
+
+        return 9; /* 802.11 a/g */
+}
+
+/**
+ * ath5k_hw_get_default_sifs - Get the default SIFS for current mode
+ *
+ * @ah: The &struct ath5k_hw
+ */
+unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah)
+{
+        struct ieee80211_channel *channel = ah->ah_current_channel;
+
+        if (channel->hw_value & CHANNEL_TURBO)
+                return 8; /* both turbo modes */
+
+        if (channel->hw_value & CHANNEL_5GHZ)
+                return 16; /* 802.11a */
+
+        return 10; /* 802.11 b/g */
+}
+
+/**
  * ath5k_hw_set_lladdr - Set station id
  *
  * @ah: The &struct ath5k_hw
@@ -1050,3 +1130,24 @@ int ath5k_hw_set_key_lladdr(struct ath5k_hw *ah, u16 entry, const u8 *mac)
         return 0;
 }
 
+/**
+ * ath5k_hw_set_coverage_class - Set IEEE 802.11 coverage class
+ *
+ * @ah: The &struct ath5k_hw
+ * @coverage_class: IEEE 802.11 coverage class number
+ *
+ * Sets slot time, ACK timeout and CTS timeout for given coverage class.
+ */
+void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class)
+{
+        /* As defined by IEEE 802.11-2007 17.3.8.6 */
+        int slot_time = ath5k_hw_get_default_slottime(ah) + 3 * coverage_class;
+        int ack_timeout = ath5k_hw_get_default_sifs(ah) + slot_time;
+        int cts_timeout = ack_timeout;
+
+        ath5k_hw_set_slot_time(ah, slot_time);
+        ath5k_hw_set_ack_timeout(ah, ack_timeout);
+        ath5k_hw_set_cts_timeout(ah, cts_timeout);
+
+        ah->ah_coverage_class = coverage_class;
+}
diff --git a/drivers/net/wireless/ath/ath5k/qcu.c b/drivers/net/wireless/ath/ath5k/qcu.c
index eeebb9aef206..abe36c0d139c 100644
--- a/drivers/net/wireless/ath/ath5k/qcu.c
+++ b/drivers/net/wireless/ath/ath5k/qcu.c
@@ -520,12 +520,16 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue)
  */
 unsigned int ath5k_hw_get_slot_time(struct ath5k_hw *ah)
 {
+        unsigned int slot_time_clock;
+
         ATH5K_TRACE(ah->ah_sc);
+
         if (ah->ah_version == AR5K_AR5210)
-                return ath5k_hw_clocktoh(ath5k_hw_reg_read(ah,
-                                AR5K_SLOT_TIME) & 0xffff, ah->ah_turbo);
+                slot_time_clock = ath5k_hw_reg_read(ah, AR5K_SLOT_TIME);
         else
-                return ath5k_hw_reg_read(ah, AR5K_DCU_GBL_IFS_SLOT) & 0xffff;
+                slot_time_clock = ath5k_hw_reg_read(ah, AR5K_DCU_GBL_IFS_SLOT);
+
+        return ath5k_hw_clocktoh(ah, slot_time_clock & 0xffff);
 }
 
 /*
@@ -533,15 +537,17 @@ unsigned int ath5k_hw_get_slot_time(struct ath5k_hw *ah)
  */
 int ath5k_hw_set_slot_time(struct ath5k_hw *ah, unsigned int slot_time)
 {
+        u32 slot_time_clock = ath5k_hw_htoclock(ah, slot_time);
+
         ATH5K_TRACE(ah->ah_sc);
-        if (slot_time < AR5K_SLOT_TIME_9 || slot_time > AR5K_SLOT_TIME_MAX)
+
+        if (slot_time < 6 || slot_time_clock > AR5K_SLOT_TIME_MAX)
                 return -EINVAL;
 
         if (ah->ah_version == AR5K_AR5210)
-                ath5k_hw_reg_write(ah, ath5k_hw_htoclock(slot_time,
-                                ah->ah_turbo), AR5K_SLOT_TIME);
+                ath5k_hw_reg_write(ah, slot_time_clock, AR5K_SLOT_TIME);
         else
-                ath5k_hw_reg_write(ah, slot_time, AR5K_DCU_GBL_IFS_SLOT);
+                ath5k_hw_reg_write(ah, slot_time_clock, AR5K_DCU_GBL_IFS_SLOT);
 
         return 0;
 }
diff --git a/drivers/net/wireless/ath/ath5k/reset.c b/drivers/net/wireless/ath/ath5k/reset.c
index 62954fc77869..6690923fd78c 100644
--- a/drivers/net/wireless/ath/ath5k/reset.c
+++ b/drivers/net/wireless/ath/ath5k/reset.c
@@ -60,12 +60,11 @@ static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
                 !(channel->hw_value & CHANNEL_OFDM));
 
         /* Get coefficient
-         * ALGO: coef = (5 * clock * carrier_freq) / 2)
+         * ALGO: coef = (5 * clock / carrier_freq) / 2
          * we scale coef by shifting clock value by 24 for
          * better precision since we use integers */
         /* TODO: Half/quarter rate */
-        clock =  ath5k_hw_htoclock(1, channel->hw_value & CHANNEL_TURBO);
-
+        clock =  (channel->hw_value & CHANNEL_TURBO) ? 80 : 40;
         coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;
 
         /* Get exponent
@@ -1317,6 +1316,10 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
         /* Restore antenna mode */
         ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode);
 
+        /* Restore slot time and ACK timeouts */
+        if (ah->ah_coverage_class > 0)
+                ath5k_hw_set_coverage_class(ah, ah->ah_coverage_class);
+
         /*
          * Configure QCUs/DCUs
          */