diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2011-08-26 06:11:31 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-08-29 19:33:01 (GMT) |
| commit | e20d434170c3a7f388d5e916825499c9c0738606 (patch) | |
| tree | 64a4966a3847d46bae04762d3782740fe23759ac /drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h | |
| parent | f22be624c29b7f714e5a82ad13dc33a0cd1443a2 (diff) | |
| download | linux-fsl-qoriq-e20d434170c3a7f388d5e916825499c9c0738606.tar.xz | |
iwlagn: move the stop / wake queue logic to transport layer
priv->mac80211_registered and priv->hw needed to move to shared.
stop_queue API was added in order to allow the upper layer to stop
the SW queues for regulatory purposes.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h b/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h index abb2ce6..255b326 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h @@ -240,4 +240,65 @@ static inline void iwl_enable_interrupts(struct iwl_trans *trans) iwl_write32(bus(trans), CSR_INT_MASK, trans_pcie->inta_mask); } +/* + * we have 8 bits used like this: + * + * 7 6 5 4 3 2 1 0 + * | | | | | | | | + * | | | | | | +-+-------- AC queue (0-3) + * | | | | | | + * | +-+-+-+-+------------ HW queue ID + * | + * +---------------------- unused + */ +static inline void iwl_set_swq_id(struct iwl_tx_queue *txq, u8 ac, u8 hwq) +{ + BUG_ON(ac > 3); /* only have 2 bits */ + BUG_ON(hwq > 31); /* only use 5 bits */ + + txq->swq_id = (hwq << 2) | ac; +} + +static inline void iwl_wake_queue(struct iwl_trans *trans, + struct iwl_tx_queue *txq) +{ + u8 queue = txq->swq_id; + u8 ac = queue & 3; + u8 hwq = (queue >> 2) & 0x1f; + + if (unlikely(!trans->shrd->mac80211_registered)) + return; + + if (test_and_clear_bit(hwq, priv(trans)->queue_stopped)) + if (atomic_dec_return(&priv(trans)->queue_stop_count[ac]) <= 0) + ieee80211_wake_queue(trans->shrd->hw, ac); +} + +static inline void iwl_stop_queue(struct iwl_trans *trans, + struct iwl_tx_queue *txq) +{ + u8 queue = txq->swq_id; + u8 ac = queue & 3; + u8 hwq = (queue >> 2) & 0x1f; + + if (unlikely(!trans->shrd->mac80211_registered)) + return; + + if (!test_and_set_bit(hwq, priv(trans)->queue_stopped)) + if (atomic_inc_return(&priv(trans)->queue_stop_count[ac]) > 0) + ieee80211_stop_queue(trans->shrd->hw, ac); +} + +#ifdef ieee80211_stop_queue +#undef ieee80211_stop_queue +#endif + +#define ieee80211_stop_queue DO_NOT_USE_ieee80211_stop_queue + +#ifdef ieee80211_wake_queue +#undef ieee80211_wake_queue +#endif + +#define ieee80211_wake_queue DO_NOT_USE_ieee80211_wake_queue + #endif /* __iwl_trans_int_pcie_h__ */ |