*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
+ * Copyright (C) 2015 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
if (mvm->support_umac_log)
iwl_mvm_dump_umac_error_log(mvm);
}
-void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, u16 ssn,
- const struct iwl_trans_txq_scd_cfg *cfg,
+
+int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 minq, u8 maxq)
+{
+ int i;
+
+ lockdep_assert_held(&mvm->queue_info_lock);
+
+ for (i = minq; i <= maxq; i++)
+ if (mvm->queue_info[i].hw_queue_refcount == 0 &&
+ !mvm->queue_info[i].setup_reserved)
+ return i;
+
+ return -ENOSPC;
+}
+
+void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
+ u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg,
unsigned int wdg_timeout)
{
- struct iwl_scd_txq_cfg_cmd cmd = {
- .scd_queue = queue,
- .enable = 1,
- .window = cfg->frame_limit,
- .sta_id = cfg->sta_id,
- .ssn = cpu_to_le16(ssn),
- .tx_fifo = cfg->fifo,
- .aggregate = cfg->aggregate,
- .tid = cfg->tid,
- };
+ bool enable_queue = true;
- if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
- iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, cfg,
- wdg_timeout);
+ spin_lock_bh(&mvm->queue_info_lock);
+
+ /* Make sure this TID isn't already enabled */
+ if (mvm->queue_info[queue].tid_bitmap & BIT(cfg->tid)) {
+ spin_unlock_bh(&mvm->queue_info_lock);
+ IWL_ERR(mvm, "Trying to enable TXQ with existing TID %d\n",
+ cfg->tid);
return;
}
- 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), &cmd),
- "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
+ /* Update mappings and refcounts */
+ 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;
+ mvm->queue_info[queue].tid_bitmap |= BIT(cfg->tid);
+
+ IWL_DEBUG_TX_QUEUES(mvm,
+ "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
+ queue, mvm->queue_info[queue].hw_queue_refcount,
+ mvm->queue_info[queue].hw_queue_to_mac80211);
+
+ spin_unlock_bh(&mvm->queue_info_lock);
+
+ /* Send the enabling command if we need to */
+ if (enable_queue) {
+ struct iwl_scd_txq_cfg_cmd cmd = {
+ .scd_queue = queue,
+ .enable = 1,
+ .window = cfg->frame_limit,
+ .sta_id = cfg->sta_id,
+ .ssn = cpu_to_le16(ssn),
+ .tx_fifo = cfg->fifo,
+ .aggregate = cfg->aggregate,
+ .tid = cfg->tid,
+ };
+
+ 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),
+ &cmd),
+ "Failed to configure queue %d on FIFO %d\n", queue,
+ cfg->fifo);
+ }
}
-void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, u8 flags)
+void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
+ u8 tid, u8 flags)
{
struct iwl_scd_txq_cfg_cmd cmd = {
.scd_queue = queue,
.enable = 0,
};
+ bool remove_mac_queue = true;
int ret;
- if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
- iwl_trans_txq_disable(mvm->trans, queue, true);
+ spin_lock_bh(&mvm->queue_info_lock);
+
+ if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) {
+ spin_unlock_bh(&mvm->queue_info_lock);
+ return;
+ }
+
+ mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
+
+ /*
+ * If there is another TID with the same AC - don't remove the MAC queue
+ * from the mapping
+ */
+ if (tid < IWL_MAX_TID_COUNT) {
+ unsigned long tid_bitmap =
+ mvm->queue_info[queue].tid_bitmap;
+ int ac = tid_to_mac80211_ac[tid];
+ int i;
+
+ for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) {
+ if (tid_to_mac80211_ac[i] == ac)
+ remove_mac_queue = false;
+ }
+ }
+
+ if (remove_mac_queue)
+ mvm->queue_info[queue].hw_queue_to_mac80211 &=
+ ~BIT(mac80211_queue);
+ mvm->queue_info[queue].hw_queue_refcount--;
+
+ cmd.enable = mvm->queue_info[queue].hw_queue_refcount ? 1 : 0;
+
+ IWL_DEBUG_TX_QUEUES(mvm,
+ "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
+ queue,
+ mvm->queue_info[queue].hw_queue_refcount,
+ mvm->queue_info[queue].hw_queue_to_mac80211);
+
+ /* If the queue is still enabled - nothing left to do in this func */
+ if (cmd.enable) {
+ spin_unlock_bh(&mvm->queue_info_lock);
return;
}
+ /* Make sure queue info is correct even though we overwrite it */
+ WARN(mvm->queue_info[queue].hw_queue_refcount ||
+ mvm->queue_info[queue].tid_bitmap ||
+ mvm->queue_info[queue].hw_queue_to_mac80211,
+ "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n",
+ queue, mvm->queue_info[queue].hw_queue_refcount,
+ mvm->queue_info[queue].hw_queue_to_mac80211,
+ mvm->queue_info[queue].tid_bitmap);
+
+ /* If we are here - the queue is freed and we can zero out these vals */
+ mvm->queue_info[queue].hw_queue_refcount = 0;
+ mvm->queue_info[queue].tid_bitmap = 0;
+ mvm->queue_info[queue].hw_queue_to_mac80211 = 0;
+
+ spin_unlock_bh(&mvm->queue_info_lock);
+
iwl_trans_txq_disable(mvm->trans, queue, false);
ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
sizeof(cmd), &cmd);
projects / karo-tx-linux.git / blobdiff