/**
* iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
* @rxb: Rx buffer to reclaim
*
* If an Rx buffer has an async callback associated with it the callback
* will be executed. The attached skb (if present) will only be freed
* if the callback returns 1
*/
void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int txq_id = SEQ_TO_QUEUE(sequence);
int index = SEQ_TO_INDEX(sequence);
int cmd_index;
struct iwl_device_cmd *cmd;
struct iwl_cmd_meta *meta;
struct iwl_tx_queue *txq = &priv->txq[priv->cmd_queue];
unsigned long flags;
/* If a Tx command is being handled and it isn't in the actual
* command queue then there a command routing bug has been introduced
* in the queue management code. */
if (WARN(txq_id != priv->cmd_queue,
"wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n",
txq_id, priv->cmd_queue, sequence,
priv->txq[priv->cmd_queue].q.read_ptr,
priv->txq[priv->cmd_queue].q.write_ptr)) {
iwl_print_hex_error(priv, pkt, 32);
return;
}
cmd_index = get_cmd_index(&txq->q, index);
cmd = txq->cmd[cmd_index];
meta = &txq->meta[cmd_index];
txq->time_stamp = jiffies;
iwlagn_unmap_tfd(priv, meta, &txq->tfds[index], DMA_BIDIRECTIONAL);
/* Input error checking is done when commands are added to queue. */
if (meta->flags & CMD_WANT_SKB) {
meta->source->reply_page = (unsigned long)rxb_addr(rxb);
rxb->page = NULL;
} else if (meta->callback)
meta->callback(priv, cmd, pkt);
spin_lock_irqsave(&priv->hcmd_lock, flags);
iwl_hcmd_queue_reclaim(priv, txq_id, index);
if (!(meta->flags & CMD_ASYNC)) {
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
IWL_DEBUG_INFO(priv, "Clearing HCMD_ACTIVE for command %s\n",
get_cmd_string(cmd->hdr.cmd));
wake_up_interruptible(&priv->wait_command_queue);
}
meta->flags = 0;
spin_unlock_irqrestore(&priv->hcmd_lock, flags);
}
/**
* iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
* @rxb: Rx buffer to reclaim
* @handler_status: return value of the handler of the command
* (put in setup_rx_handlers)
*
* If an Rx buffer has an async callback associated with it the callback
* will be executed. The attached skb (if present) will only be freed
* if the callback returns 1
*/
void iwl_tx_cmd_complete(struct iwl_trans *trans, struct iwl_rx_cmd_buffer *rxb,
int handler_status)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int txq_id = SEQ_TO_QUEUE(sequence);
int index = SEQ_TO_INDEX(sequence);
int cmd_index;
struct iwl_device_cmd *cmd;
struct iwl_cmd_meta *meta;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_tx_queue *txq = &trans_pcie->txq[trans_pcie->cmd_queue];
/* If a Tx command is being handled and it isn't in the actual
* command queue then there a command routing bug has been introduced
* in the queue management code. */
if (WARN(txq_id != trans_pcie->cmd_queue,
"wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n",
txq_id, trans_pcie->cmd_queue, sequence,
trans_pcie->txq[trans_pcie->cmd_queue].q.read_ptr,
trans_pcie->txq[trans_pcie->cmd_queue].q.write_ptr)) {
iwl_print_hex_error(trans, pkt, 32);
return;
}
spin_lock(&txq->lock);
cmd_index = get_cmd_index(&txq->q, index);
cmd = txq->cmd[cmd_index];
meta = &txq->meta[cmd_index];
txq->time_stamp = jiffies;
iwlagn_unmap_tfd(trans, meta, &txq->tfds[index],
DMA_BIDIRECTIONAL);
/* Input error checking is done when commands are added to queue. */
if (meta->flags & CMD_WANT_SKB) {
struct page *p = rxb_steal_page(rxb);
meta->source->resp_pkt = pkt;
meta->source->_rx_page_addr = (unsigned long)page_address(p);
meta->source->_rx_page_order = hw_params(trans).rx_page_order;
meta->source->handler_status = handler_status;
}
iwl_hcmd_queue_reclaim(trans, txq_id, index);
if (!(meta->flags & CMD_ASYNC)) {
if (!test_bit(STATUS_HCMD_ACTIVE, &trans->shrd->status)) {
IWL_WARN(trans,
"HCMD_ACTIVE already clear for command %s\n",
get_cmd_string(cmd->hdr.cmd));
}
clear_bit(STATUS_HCMD_ACTIVE, &trans->shrd->status);
IWL_DEBUG_INFO(trans, "Clearing HCMD_ACTIVE for command %s\n",
get_cmd_string(cmd->hdr.cmd));
wake_up(&trans->wait_command_queue);
}
meta->flags = 0;
spin_unlock(&txq->lock);
}
