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path: root/drivers/net/wireless/ath/ath9k/ar9003_mac.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_mac.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_mac.c44
1 files changed, 42 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 37ba37481a47..5b995bee70ae 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -90,6 +90,8 @@ static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
MAP_ISR_S2_CST);
mask2 |= ((isr2 & AR_ISR_S2_TSFOOR) >>
MAP_ISR_S2_TSFOOR);
+ mask2 |= ((isr2 & AR_ISR_S2_BB_WATCHDOG) >>
+ MAP_ISR_S2_BB_WATCHDOG);
if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
REG_WRITE(ah, AR_ISR_S2, isr2);
@@ -167,6 +169,9 @@ static bool ar9003_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
(void) REG_READ(ah, AR_ISR);
}
+
+ if (*masked & ATH9K_INT_BB_WATCHDOG)
+ ar9003_hw_bb_watchdog_read(ah);
}
if (sync_cause) {
@@ -465,6 +470,14 @@ static void ar9003_hw_set11n_virtualmorefrag(struct ath_hw *ah, void *ds,
ads->ctl11 &= ~AR_VirtMoreFrag;
}
+void ar9003_hw_set_paprd_txdesc(struct ath_hw *ah, void *ds, u8 chains)
+{
+ struct ar9003_txc *ads = ds;
+
+ ads->ctl12 |= SM(chains, AR_PAPRDChainMask);
+}
+EXPORT_SYMBOL(ar9003_hw_set_paprd_txdesc);
+
void ar9003_hw_attach_mac_ops(struct ath_hw *hw)
{
struct ath_hw_ops *ops = ath9k_hw_ops(hw);
@@ -566,12 +579,39 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
rxs->rs_flags |= ATH9K_RX_DECRYPT_BUSY;
if ((rxsp->status11 & AR_RxFrameOK) == 0) {
+ /*
+ * AR_CRCErr will bet set to true if we're on the last
+ * subframe and the AR_PostDelimCRCErr is caught.
+ * In a way this also gives us a guarantee that when
+ * (!(AR_CRCErr) && (AR_PostDelimCRCErr)) we cannot
+ * possibly be reviewing the last subframe. AR_CRCErr
+ * is the CRC of the actual data.
+ */
if (rxsp->status11 & AR_CRCErr) {
rxs->rs_status |= ATH9K_RXERR_CRC;
} else if (rxsp->status11 & AR_PHYErr) {
- rxs->rs_status |= ATH9K_RXERR_PHY;
phyerr = MS(rxsp->status11, AR_PHYErrCode);
- rxs->rs_phyerr = phyerr;
+ /*
+ * If we reach a point here where AR_PostDelimCRCErr is
+ * true it implies we're *not* on the last subframe. In
+ * in that case that we know already that the CRC of
+ * the frame was OK, and MAC would send an ACK for that
+ * subframe, even if we did get a phy error of type
+ * ATH9K_PHYERR_OFDM_RESTART. This is only applicable
+ * to frame that are prior to the last subframe.
+ * The AR_PostDelimCRCErr is the CRC for the MPDU
+ * delimiter, which contains the 4 reserved bits,
+ * the MPDU length (12 bits), and follows the MPDU
+ * delimiter for an A-MPDU subframe (0x4E = 'N' ASCII).
+ */
+ if ((phyerr == ATH9K_PHYERR_OFDM_RESTART) &&
+ (rxsp->status11 & AR_PostDelimCRCErr)) {
+ rxs->rs_phyerr = 0;
+ } else {
+ rxs->rs_status |= ATH9K_RXERR_PHY;
+ rxs->rs_phyerr = phyerr;
+ }
+
} else if (rxsp->status11 & AR_DecryptCRCErr) {
rxs->rs_status |= ATH9K_RXERR_DECRYPT;
} else if (rxsp->status11 & AR_MichaelErr) {
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