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authorIvo van Doorn <IvDoorn@gmail.com>2010-06-14 22:12:54 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-06-15 16:00:50 -0400
commite1b4d7b735c564444d0db668a65c547ad1d29058 (patch)
treedbdf590d02a39cf8c76c5338ee5a8c7e786e7720
parent3d2bc1036a64bc015671283833430035f7dbbed0 (diff)
rt2x00: Enable fallback rates for rt61pci and rt73usb
Explicitly enable the usage of fallback rates for the transmission of frames with rt61pci and rt73usb hardware. Note that for txdone reporting, only rt61pci is capable of reporting the fallback rates, for USB it is not possible to determine the number of retries. However the device will use the fallback rates, so it might still help in the performance. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/rt2x00/rt61pci.c22
-rw-r--r--drivers/net/wireless/rt2x00/rt73usb.c3
2 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 243df08ae91..d1270118f7d 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -931,6 +931,9 @@ static void rt61pci_config_retry_limit(struct rt2x00_dev *rt2x00dev,
u32 reg;
rt2x00pci_register_read(rt2x00dev, TXRX_CSR4, &reg);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_DOWN, 1);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_STEP, 0);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_FALLBACK_CCK, 0);
rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT,
libconf->conf->long_frame_max_tx_count);
rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT,
@@ -2130,6 +2133,13 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
}
txdesc.retry = rt2x00_get_field32(reg, STA_CSR4_RETRY_COUNT);
+ /*
+ * the frame was retried at least once
+ * -> hw used fallback rates
+ */
+ if (txdesc.retry)
+ __set_bit(TXDONE_FALLBACK, &txdesc.flags);
+
rt2x00pci_txdone(entry, &txdesc);
}
}
@@ -2587,6 +2597,18 @@ static int rt61pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
EEPROM_MAC_ADDR_0));
/*
+ * As rt61 has a global fallback table we cannot specify
+ * more then one tx rate per frame but since the hw will
+ * try several rates (based on the fallback table) we should
+ * still initialize max_rates to the maximum number of rates
+ * we are going to try. Otherwise mac80211 will truncate our
+ * reported tx rates and the rc algortihm will end up with
+ * incorrect data.
+ */
+ rt2x00dev->hw->max_rates = 7;
+ rt2x00dev->hw->max_rate_tries = 1;
+
+ /*
* Initialize hw_mode information.
*/
spec->supported_bands = SUPPORT_BAND_2GHZ;
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index 113ad690f9d..d06d90f003e 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -816,6 +816,9 @@ static void rt73usb_config_retry_limit(struct rt2x00_dev *rt2x00dev,
u32 reg;
rt2x00usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_DOWN, 1);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_STEP, 0);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_FALLBACK_CCK, 0);
rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT,
libconf->conf->long_frame_max_tx_count);
rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT,