* Extend get_default_sifs/slot_time to include timings for turbo
half and quarter rate modes.
* AR5210 code for now uses timings already on core clock units
instead of usecs so rename them (we 'll clean it up later).
Signed-off-by: Nick Kossifidis <mickflemm@xxxxxxxxx>
---
drivers/net/wireless/ath/ath5k/ath5k.h | 24 ++++++++++++--
drivers/net/wireless/ath/ath5k/pcu.c | 52 ++++++++++++++++++++++++--------
drivers/net/wireless/ath/ath5k/qcu.c | 16 +++++----
3 files changed, 68 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index 005cad0..e11fc8f 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -226,16 +226,16 @@
#define AR5K_INIT_USEC 39
#define AR5K_INIT_USEC_TURBO 79
#define AR5K_INIT_USEC_32 31
-#define AR5K_INIT_SLOT_TIME 396
-#define AR5K_INIT_SLOT_TIME_TURBO 480
+#define AR5K_INIT_SLOT_TIME_CLOCK 396
+#define AR5K_INIT_SLOT_TIME_TURBO_CLOCK 480
#define AR5K_INIT_ACK_CTS_TIMEOUT 1024
#define AR5K_INIT_ACK_CTS_TIMEOUT_TURBO 0x08000800
#define AR5K_INIT_PROG_IFS 920
#define AR5K_INIT_PROG_IFS_TURBO 960
#define AR5K_INIT_EIFS 3440
#define AR5K_INIT_EIFS_TURBO 6880
-#define AR5K_INIT_SIFS 560
-#define AR5K_INIT_SIFS_TURBO 480
+#define AR5K_INIT_SIFS_CLOCK 560
+#define AR5K_INIT_SIFS_TURBO_CLOCK 480
#define AR5K_INIT_SH_RETRY 10
#define AR5K_INIT_LG_RETRY AR5K_INIT_SH_RETRY
#define AR5K_INIT_SSH_RETRY 32
@@ -251,6 +251,22 @@
(AR5K_INIT_PROG_IFS_TURBO) \
)
+/* Slot time */
+#define AR5K_INIT_SLOT_TIME_TURBO 6
+#define AR5K_INIT_SLOT_TIME_DEFAULT 9
+#define AR5K_INIT_SLOT_TIME_HALF_RATE 13
+#define AR5K_INIT_SLOT_TIME_QUARTER_RATE 21
+#define AR5K_INIT_SLOT_TIME_B 20
+#define AR5K_SLOT_TIME_MAX 0xffff
+
+/* SIFS */
+#define AR5K_INIT_SIFS_TURBO 6
+/* XXX: 8 from initvals 10 from standard */
+#define AR5K_INIT_SIFS_DEFAULT_BG 8
+#define AR5K_INIT_SIFS_DEFAULT_A 16
+#define AR5K_INIT_SIFS_HALF_RATE 32
+#define AR5K_INIT_SIFS_QUARTER_RATE 64
+
/* Rx latency for 5 and 10MHz operation (max ?) */
#define AR5K_INIT_RX_LAT_MAX 63
/* Tx latencies from initvals (5212 only but no problem
diff --git a/drivers/net/wireless/ath/ath5k/pcu.c b/drivers/net/wireless/ath/ath5k/pcu.c
index ae99e37..cb6e277 100644
--- a/drivers/net/wireless/ath/ath5k/pcu.c
+++ b/drivers/net/wireless/ath/ath5k/pcu.c
@@ -43,14 +43,27 @@
static unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah)
{
struct ieee80211_channel *channel = ah->ah_current_channel;
+ unsigned int slot_time;
- if (channel->hw_value & CHANNEL_TURBO)
- return 6; /* both turbo modes */
+ switch (ah->ah_bwmode) {
+ case AR5K_BWMODE_40MHZ:
+ slot_time = AR5K_INIT_SLOT_TIME_TURBO;
+ break;
+ case AR5K_BWMODE_10MHZ:
+ slot_time = AR5K_INIT_SLOT_TIME_HALF_RATE;
+ break;
+ case AR5K_BWMODE_5MHZ:
+ slot_time = AR5K_INIT_SLOT_TIME_QUARTER_RATE;
+ break;
+ case AR5K_BWMODE_DEFAULT:
+ slot_time = AR5K_INIT_SLOT_TIME_DEFAULT;
+ default:
+ if (channel->hw_value & CHANNEL_CCK)
+ slot_time = AR5K_INIT_SLOT_TIME_B;
+ break;
+ }
- if (channel->hw_value & CHANNEL_CCK)
- return 20; /* 802.11b */
-
- return 9; /* 802.11 a/g */
+ return slot_time;
}
/**
@@ -58,17 +71,30 @@ static unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah)
*
* @ah: The &struct ath5k_hw
*/
-static unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah)
+unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah)
{
struct ieee80211_channel *channel = ah->ah_current_channel;
+ unsigned int sifs;
- if (channel->hw_value & CHANNEL_TURBO)
- return 8; /* both turbo modes */
+ switch (ah->ah_bwmode) {
+ case AR5K_BWMODE_40MHZ:
+ sifs = AR5K_INIT_SIFS_TURBO;
+ break;
+ case AR5K_BWMODE_10MHZ:
+ sifs = AR5K_INIT_SIFS_HALF_RATE;
+ break;
+ case AR5K_BWMODE_5MHZ:
+ sifs = AR5K_INIT_SIFS_QUARTER_RATE;
+ break;
+ case AR5K_BWMODE_DEFAULT:
+ sifs = AR5K_INIT_SIFS_DEFAULT_BG;
+ default:
+ if (channel->hw_value & CHANNEL_5GHZ)
+ sifs = AR5K_INIT_SIFS_DEFAULT_A;
+ break;
+ }
- if (channel->hw_value & CHANNEL_5GHZ)
- return 16; /* 802.11a */
-
- return 10; /* 802.11 b/g */
+ return sifs;
}
/**
diff --git a/drivers/net/wireless/ath/ath5k/qcu.c b/drivers/net/wireless/ath/ath5k/qcu.c
index c422d5c..6eb6838 100644
--- a/drivers/net/wireless/ath/ath5k/qcu.c
+++ b/drivers/net/wireless/ath/ath5k/qcu.c
@@ -297,7 +297,8 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue)
/* Set Slot time */
ath5k_hw_reg_write(ah, (ah->ah_bwmode == AR5K_BWMODE_40MHZ) ?
- AR5K_INIT_SLOT_TIME_TURBO : AR5K_INIT_SLOT_TIME,
+ AR5K_INIT_SLOT_TIME_TURBO_CLOCK :
+ AR5K_INIT_SLOT_TIME_CLOCK,
AR5K_SLOT_TIME);
/* Set ACK_CTS timeout */
ath5k_hw_reg_write(ah, (ah->ah_bwmode == AR5K_BWMODE_40MHZ) ?
@@ -306,15 +307,16 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue)
/* Set IFS0 */
if (ah->ah_bwmode == AR5K_BWMODE_40MHZ) {
- ath5k_hw_reg_write(ah, ((AR5K_INIT_SIFS_TURBO +
- tq->tqi_aifs * AR5K_INIT_SLOT_TIME_TURBO) <<
- AR5K_IFS0_DIFS_S) | AR5K_INIT_SIFS_TURBO,
+ ath5k_hw_reg_write(ah, ((AR5K_INIT_SIFS_TURBO_CLOCK +
+ tq->tqi_aifs * AR5K_INIT_SLOT_TIME_TURBO_CLOCK)
+ << AR5K_IFS0_DIFS_S) |
+ AR5K_INIT_SIFS_TURBO_CLOCK,
AR5K_IFS0);
} else {
- ath5k_hw_reg_write(ah, ((AR5K_INIT_SIFS +
- tq->tqi_aifs * AR5K_INIT_SLOT_TIME) <<
+ ath5k_hw_reg_write(ah, ((AR5K_INIT_SIFS_CLOCK +
+ tq->tqi_aifs * AR5K_INIT_SLOT_TIME_CLOCK) <<
AR5K_IFS0_DIFS_S) |
- AR5K_INIT_SIFS, AR5K_IFS0);
+ AR5K_INIT_SIFS_CLOCK, AR5K_IFS0);
}
/* Set IFS1 */
--
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