diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/utils.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/utils.c | 232 |
1 files changed, 220 insertions, 12 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c index 161b99efd63d..d04babd99b53 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c @@ -512,7 +512,7 @@ void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) base = mvm->fw->inst_errlog_ptr; } - if (base < 0x800000) { + if (base < 0x400000) { IWL_ERR(mvm, "Not valid error log pointer 0x%08X for %s uCode\n", base, @@ -579,17 +579,29 @@ void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) iwl_mvm_dump_umac_error_log(mvm); } -int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 minq, u8 maxq) +int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq) { int i; lockdep_assert_held(&mvm->queue_info_lock); + /* Start by looking for a free queue */ for (i = minq; i <= maxq; i++) if (mvm->queue_info[i].hw_queue_refcount == 0 && mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) return i; + /* + * If no free queue found - settle for an inactive one to reconfigure + * Make sure that the inactive queue either already belongs to this STA, + * or that if it belongs to another one - it isn't the reserved queue + */ + for (i = minq; i <= maxq; i++) + if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE && + (sta_id == mvm->queue_info[i].ra_sta_id || + !mvm->queue_info[i].reserved)) + return i; + return -ENOSPC; } @@ -598,7 +610,7 @@ int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, { struct iwl_scd_txq_cfg_cmd cmd = { .scd_queue = queue, - .enable = 1, + .action = SCD_CFG_ENABLE_QUEUE, .window = frame_limit, .sta_id = sta_id, .ssn = cpu_to_le16(ssn), @@ -643,13 +655,23 @@ void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, } /* Update mappings and refcounts */ + if (mvm->queue_info[queue].hw_queue_refcount > 0) + enable_queue = false; + mvm->queue_info[queue].hw_queue_to_mac80211 |= BIT(mac80211_queue); mvm->queue_info[queue].hw_queue_refcount++; - if (mvm->queue_info[queue].hw_queue_refcount > 1) - enable_queue = false; - else - mvm->queue_info[queue].ra_sta_id = cfg->sta_id; mvm->queue_info[queue].tid_bitmap |= BIT(cfg->tid); + mvm->queue_info[queue].ra_sta_id = cfg->sta_id; + + if (enable_queue) { + if (cfg->tid != IWL_MAX_TID_COUNT) + mvm->queue_info[queue].mac80211_ac = + tid_to_mac80211_ac[cfg->tid]; + else + mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; + + mvm->queue_info[queue].txq_tid = cfg->tid; + } IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n", @@ -662,7 +684,7 @@ void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, if (enable_queue) { struct iwl_scd_txq_cfg_cmd cmd = { .scd_queue = queue, - .enable = 1, + .action = SCD_CFG_ENABLE_QUEUE, .window = cfg->frame_limit, .sta_id = cfg->sta_id, .ssn = cpu_to_le16(ssn), @@ -671,6 +693,10 @@ void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, .tid = cfg->tid, }; + /* Set sta_id in the command, if it exists */ + if (iwl_mvm_is_dqa_supported(mvm)) + cmd.sta_id = cfg->sta_id; + iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), @@ -685,7 +711,7 @@ void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, { struct iwl_scd_txq_cfg_cmd cmd = { .scd_queue = queue, - .enable = 0, + .action = SCD_CFG_DISABLE_QUEUE, }; bool remove_mac_queue = true; int ret; @@ -720,8 +746,9 @@ void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, ~BIT(mac80211_queue); mvm->queue_info[queue].hw_queue_refcount--; - cmd.enable = mvm->queue_info[queue].hw_queue_refcount ? 1 : 0; - if (!cmd.enable) + cmd.action = mvm->queue_info[queue].hw_queue_refcount ? + SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; + if (cmd.action == SCD_CFG_DISABLE_QUEUE) mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; IWL_DEBUG_TX_QUEUES(mvm, @@ -731,12 +758,13 @@ void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, mvm->queue_info[queue].hw_queue_to_mac80211); /* If the queue is still enabled - nothing left to do in this func */ - if (cmd.enable) { + if (cmd.action == SCD_CFG_ENABLE_QUEUE) { spin_unlock_bh(&mvm->queue_info_lock); return; } cmd.sta_id = mvm->queue_info[queue].ra_sta_id; + cmd.tid = mvm->queue_info[queue].txq_tid; /* Make sure queue info is correct even though we overwrite it */ WARN(mvm->queue_info[queue].hw_queue_refcount || @@ -752,6 +780,9 @@ void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, mvm->queue_info[queue].tid_bitmap = 0; mvm->queue_info[queue].hw_queue_to_mac80211 = 0; + /* Regardless if this is a reserved TXQ for a STA - mark it as false */ + mvm->queue_info[queue].reserved = false; + spin_unlock_bh(&mvm->queue_info_lock); iwl_trans_txq_disable(mvm->trans, queue, false); @@ -1039,6 +1070,183 @@ out: ieee80211_connection_loss(vif); } +/* + * Remove inactive TIDs of a given queue. + * If all queue TIDs are inactive - mark the queue as inactive + * If only some the queue TIDs are inactive - unmap them from the queue + */ +static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, + struct iwl_mvm_sta *mvmsta, int queue, + unsigned long tid_bitmap) +{ + int tid; + + lockdep_assert_held(&mvmsta->lock); + lockdep_assert_held(&mvm->queue_info_lock); + + /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ + for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { + /* If some TFDs are still queued - don't mark TID as inactive */ + if (iwl_mvm_tid_queued(&mvmsta->tid_data[tid])) + tid_bitmap &= ~BIT(tid); + } + + /* If all TIDs in the queue are inactive - mark queue as inactive. */ + if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { + mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; + + for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) + mvmsta->tid_data[tid].is_tid_active = false; + + IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n", + queue); + return; + } + + /* + * If we are here, this is a shared queue and not all TIDs timed-out. + * Remove the ones that did. + */ + for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { + int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]; + + mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE; + mvm->queue_info[queue].hw_queue_to_mac80211 &= ~BIT(mac_queue); + mvm->queue_info[queue].hw_queue_refcount--; + mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); + mvmsta->tid_data[tid].is_tid_active = false; + + IWL_DEBUG_TX_QUEUES(mvm, + "Removing inactive TID %d from shared Q:%d\n", + tid, queue); + } + + IWL_DEBUG_TX_QUEUES(mvm, + "TXQ #%d left with tid bitmap 0x%x\n", queue, + mvm->queue_info[queue].tid_bitmap); + + /* + * There may be different TIDs with the same mac queues, so make + * sure all TIDs have existing corresponding mac queues enabled + */ + tid_bitmap = mvm->queue_info[queue].tid_bitmap; + for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { + mvm->queue_info[queue].hw_queue_to_mac80211 |= + BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]); + } + + /* If the queue is marked as shared - "unshare" it */ + if (mvm->queue_info[queue].hw_queue_refcount == 1 && + mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { + mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING; + IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", + queue); + } +} + +void iwl_mvm_inactivity_check(struct iwl_mvm *mvm) +{ + unsigned long timeout_queues_map = 0; + unsigned long now = jiffies; + int i; + + spin_lock_bh(&mvm->queue_info_lock); + for (i = 0; i < IWL_MAX_HW_QUEUES; i++) + if (mvm->queue_info[i].hw_queue_refcount > 0) + timeout_queues_map |= BIT(i); + spin_unlock_bh(&mvm->queue_info_lock); + + rcu_read_lock(); + + /* + * If a queue time outs - mark it as INACTIVE (don't remove right away + * if we don't have to.) This is an optimization in case traffic comes + * later, and we don't HAVE to use a currently-inactive queue + */ + for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) { + struct ieee80211_sta *sta; + struct iwl_mvm_sta *mvmsta; + u8 sta_id; + int tid; + unsigned long inactive_tid_bitmap = 0; + unsigned long queue_tid_bitmap; + + spin_lock_bh(&mvm->queue_info_lock); + queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; + + /* If TXQ isn't in active use anyway - nothing to do here... */ + if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && + mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) { + spin_unlock_bh(&mvm->queue_info_lock); + continue; + } + + /* Check to see if there are inactive TIDs on this queue */ + for_each_set_bit(tid, &queue_tid_bitmap, + IWL_MAX_TID_COUNT + 1) { + if (time_after(mvm->queue_info[i].last_frame_time[tid] + + IWL_MVM_DQA_QUEUE_TIMEOUT, now)) + continue; + + inactive_tid_bitmap |= BIT(tid); + } + spin_unlock_bh(&mvm->queue_info_lock); + + /* If all TIDs are active - finish check on this queue */ + if (!inactive_tid_bitmap) + continue; + + /* + * If we are here - the queue hadn't been served recently and is + * in use + */ + + sta_id = mvm->queue_info[i].ra_sta_id; + sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); + + /* + * If the STA doesn't exist anymore, it isn't an error. It could + * be that it was removed since getting the queues, and in this + * case it should've inactivated its queues anyway. + */ + if (IS_ERR_OR_NULL(sta)) + continue; + + mvmsta = iwl_mvm_sta_from_mac80211(sta); + + spin_lock_bh(&mvmsta->lock); + spin_lock(&mvm->queue_info_lock); + iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, + inactive_tid_bitmap); + spin_unlock(&mvm->queue_info_lock); + spin_unlock_bh(&mvmsta->lock); + } + + rcu_read_unlock(); +} + +void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) +{ + bool ps_disabled; + + lockdep_assert_held(&mvm->mutex); + + /* Disable power save when reading GP2 */ + ps_disabled = mvm->ps_disabled; + if (!ps_disabled) { + mvm->ps_disabled = true; + iwl_mvm_power_update_device(mvm); + } + + *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); + *boottime = ktime_get_boot_ns(); + + if (!ps_disabled) { + mvm->ps_disabled = ps_disabled; + iwl_mvm_power_update_device(mvm); + } +} + int iwl_mvm_send_lqm_cmd(struct ieee80211_vif *vif, enum iwl_lqm_cmd_operatrions operation, u32 duration, u32 timeout) |