static bool rt2x00usb_kick_rx_entry(struct queue_entry *entry, void *data) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev); struct queue_entry_priv_usb *entry_priv = entry->priv_data; int status; if (test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) || test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags)) return false; rt2x00lib_dmastart(entry); usb_fill_bulk_urb(entry_priv->urb, usb_dev, usb_rcvbulkpipe(usb_dev, entry->queue->usb_endpoint), entry->skb->data, entry->skb->len, rt2x00usb_interrupt_rxdone, entry); status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC); if (status) { if (status == -ENODEV) clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); rt2x00lib_dmadone(entry); } return false; }
static void rt2x00usb_interrupt_txdone(struct urb *urb) { struct queue_entry *entry = (struct queue_entry *)urb->context; struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; if (!test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) return; /* * Check if the frame was correctly uploaded */ if (urb->status) set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); /* * Report the frame as DMA done */ rt2x00lib_dmadone(entry); if (rt2x00dev->ops->lib->tx_dma_done) rt2x00dev->ops->lib->tx_dma_done(entry); /* * Schedule the delayed work for reading the TX status * from the device. */ if (!test_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags) || !kfifo_is_empty(&rt2x00dev->txstatus_fifo)) queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work); }
static void rt2x00usb_interrupt_rxdone(struct urb *urb) { struct queue_entry *entry = (struct queue_entry *)urb->context; struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; if (!test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) return; /* * Report the frame as DMA done */ rt2x00lib_dmadone(entry); /* * Check if the received data is simply too small * to be actually valid, or if the urb is signaling * a problem. */ if (urb->actual_length < entry->queue->desc_size || urb->status) set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); /* * Schedule the delayed work for reading the RX status * from the device. */ queue_work(rt2x00dev->workqueue, &rt2x00dev->rxdone_work); }
static void rt2x00usb_kick_tx_entry(struct queue_entry *entry) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev); struct queue_entry_priv_usb *entry_priv = entry->priv_data; u32 length; if (!test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags)) return; /* * USB devices cannot blindly pass the skb->len as the * length of the data to usb_fill_bulk_urb. Pass the skb * to the driver to determine what the length should be. */ length = rt2x00dev->ops->lib->get_tx_data_len(entry); usb_fill_bulk_urb(entry_priv->urb, usb_dev, usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint), entry->skb->data, length, rt2x00usb_interrupt_txdone, entry); if (usb_submit_urb(entry_priv->urb, GFP_ATOMIC)) { set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); rt2x00lib_dmadone(entry); } }
static void rt2x00usb_interrupt_txdone(struct urb *urb) { struct queue_entry *entry = (struct queue_entry *)urb->context; struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; if (!test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) return; /* * Report the frame as DMA done */ rt2x00lib_dmadone(entry); /* * Check if the frame was correctly uploaded */ if (urb->status) set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); /* * Schedule the delayed work for reading the TX status * from the device. */ ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->txdone_work); }
static bool rt2x00usb_kick_tx_entry(struct queue_entry *entry, void *data) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev); struct queue_entry_priv_usb *entry_priv = entry->priv_data; u32 length; int status; if (!test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags) || test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags)) return false; /* * USB devices require certain padding at the end of each frame * and urb. Those paddings are not included in skbs. Pass entry * to the driver to determine what the overall length should be. */ length = rt2x00dev->ops->lib->get_tx_data_len(entry); status = skb_padto(entry->skb, length); if (unlikely(status)) { /* TODO: report something more appropriate than IO_FAILED. */ rt2x00_warn(rt2x00dev, "TX SKB padding error, out of memory\n"); set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); rt2x00lib_dmadone(entry); return false; } usb_fill_bulk_urb(entry_priv->urb, usb_dev, usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint), entry->skb->data, length, rt2x00usb_interrupt_txdone, entry); usb_anchor_urb(entry_priv->urb, rt2x00dev->anchor); status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC); if (status) { usb_unanchor_urb(entry_priv->urb); if (status == -ENODEV) clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); rt2x00lib_dmadone(entry); } return false; }
/* * Device initialization handlers. */ void rt2x00usb_clear_entry(struct queue_entry *entry) { struct usb_device *usb_dev = to_usb_device_intf(entry->queue->rt2x00dev->dev); struct queue_entry_priv_usb *entry_priv = entry->priv_data; int pipe; entry->flags = 0; if (entry->queue->qid == QID_RX) { pipe = usb_rcvbulkpipe(usb_dev, entry->queue->usb_endpoint); usb_fill_bulk_urb(entry_priv->urb, usb_dev, pipe, entry->skb->data, entry->skb->len, rt2x00usb_interrupt_rxdone, entry); set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); if (usb_submit_urb(entry_priv->urb, GFP_ATOMIC)) { set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); rt2x00lib_dmadone(entry); } } }
bool rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev) { struct data_queue *queue = rt2x00dev->rx; struct queue_entry *entry; struct queue_entry_priv_pci *entry_priv; struct skb_frame_desc *skbdesc; int max_rx = 16; while (--max_rx) { entry = rt2x00queue_get_entry(queue, Q_INDEX); entry_priv = entry->priv_data; if (rt2x00dev->ops->lib->get_entry_state(entry)) break; /* * Fill in desc fields of the skb descriptor */ skbdesc = get_skb_frame_desc(entry->skb); skbdesc->desc = entry_priv->desc; skbdesc->desc_len = entry->queue->desc_size; /* * DMA is already done, notify rt2x00lib that * it finished successfully. */ rt2x00lib_dmastart(entry); rt2x00lib_dmadone(entry); /* * Send the frame to rt2x00lib for further processing. */ rt2x00lib_rxdone(entry); } return !max_rx; }