diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00usb.c')
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00usb.c | 145 |
1 files changed, 118 insertions, 27 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c index b73a7e0aeed4..83df312ac56f 100644 --- a/drivers/net/wireless/rt2x00/rt2x00usb.c +++ b/drivers/net/wireless/rt2x00/rt2x00usb.c @@ -79,7 +79,7 @@ int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev, { int status; - BUG_ON(!mutex_is_locked(&rt2x00dev->usb_cache_mutex)); + BUG_ON(!mutex_is_locked(&rt2x00dev->csr_mutex)); /* * Check for Cache availability. @@ -110,13 +110,13 @@ int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev, { int status; - mutex_lock(&rt2x00dev->usb_cache_mutex); + mutex_lock(&rt2x00dev->csr_mutex); status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request, requesttype, offset, buffer, buffer_length, timeout); - mutex_unlock(&rt2x00dev->usb_cache_mutex); + mutex_unlock(&rt2x00dev->csr_mutex); return status; } @@ -132,7 +132,7 @@ int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev, unsigned char *tb; u16 off, len, bsize; - mutex_lock(&rt2x00dev->usb_cache_mutex); + mutex_lock(&rt2x00dev->csr_mutex); tb = (char *)buffer; off = offset; @@ -148,12 +148,34 @@ int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev, off += bsize; } - mutex_unlock(&rt2x00dev->usb_cache_mutex); + mutex_unlock(&rt2x00dev->csr_mutex); return status; } EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_large_buff); +int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + struct rt2x00_field32 field, + u32 *reg) +{ + unsigned int i; + + for (i = 0; i < REGISTER_BUSY_COUNT; i++) { + rt2x00usb_register_read_lock(rt2x00dev, offset, reg); + if (!rt2x00_get_field32(*reg, field)) + return 1; + udelay(REGISTER_BUSY_DELAY); + } + + ERROR(rt2x00dev, "Indirect register access failed: " + "offset=0x%.08x, value=0x%.08x\n", offset, *reg); + *reg = ~0; + + return 0; +} +EXPORT_SYMBOL_GPL(rt2x00usb_regbusy_read); + /* * TX data handlers. */ @@ -212,10 +234,10 @@ int rt2x00usb_write_tx_data(struct queue_entry *entry) * 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(rt2x00dev, entry->skb); + length = rt2x00dev->ops->lib->get_tx_data_len(entry); usb_fill_bulk_urb(entry_priv->urb, usb_dev, - usb_sndbulkpipe(usb_dev, 1), + usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint), entry->skb->data, length, rt2x00usb_interrupt_txdone, entry); @@ -351,28 +373,96 @@ EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio); /* * Device initialization handlers. */ -void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev, - struct queue_entry *entry) +void rt2x00usb_clear_entry(struct queue_entry *entry) { - struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev); + 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; - usb_fill_bulk_urb(entry_priv->urb, usb_dev, - usb_rcvbulkpipe(usb_dev, 1), - entry->skb->data, entry->skb->len, - rt2x00usb_interrupt_rxdone, entry); + 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); - usb_submit_urb(entry_priv->urb, GFP_ATOMIC); + set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); + usb_submit_urb(entry_priv->urb, GFP_ATOMIC); + } else { + entry->flags = 0; + } } -EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry); +EXPORT_SYMBOL_GPL(rt2x00usb_clear_entry); -void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev, - struct queue_entry *entry) +static void rt2x00usb_assign_endpoint(struct data_queue *queue, + struct usb_endpoint_descriptor *ep_desc) { - entry->flags = 0; + struct usb_device *usb_dev = to_usb_device_intf(queue->rt2x00dev->dev); + int pipe; + + queue->usb_endpoint = usb_endpoint_num(ep_desc); + + if (queue->qid == QID_RX) { + pipe = usb_rcvbulkpipe(usb_dev, queue->usb_endpoint); + queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 0); + } else { + pipe = usb_sndbulkpipe(usb_dev, queue->usb_endpoint); + queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 1); + } + + if (!queue->usb_maxpacket) + queue->usb_maxpacket = 1; +} + +static int rt2x00usb_find_endpoints(struct rt2x00_dev *rt2x00dev) +{ + struct usb_interface *intf = to_usb_interface(rt2x00dev->dev); + struct usb_host_interface *intf_desc = intf->cur_altsetting; + struct usb_endpoint_descriptor *ep_desc; + struct data_queue *queue = rt2x00dev->tx; + struct usb_endpoint_descriptor *tx_ep_desc = NULL; + unsigned int i; + + /* + * Walk through all available endpoints to search for "bulk in" + * and "bulk out" endpoints. When we find such endpoints collect + * the information we need from the descriptor and assign it + * to the queue. + */ + for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) { + ep_desc = &intf_desc->endpoint[i].desc; + + if (usb_endpoint_is_bulk_in(ep_desc)) { + rt2x00usb_assign_endpoint(rt2x00dev->rx, ep_desc); + } else if (usb_endpoint_is_bulk_out(ep_desc)) { + rt2x00usb_assign_endpoint(queue, ep_desc); + + if (queue != queue_end(rt2x00dev)) + queue = queue_next(queue); + tx_ep_desc = ep_desc; + } + } + + /* + * At least 1 endpoint for RX and 1 endpoint for TX must be available. + */ + if (!rt2x00dev->rx->usb_endpoint || !rt2x00dev->tx->usb_endpoint) { + ERROR(rt2x00dev, "Bulk-in/Bulk-out endpoints not found\n"); + return -EPIPE; + } + + /* + * It might be possible not all queues have a dedicated endpoint. + * Loop through all TX queues and copy the endpoint information + * which we have gathered from already assigned endpoints. + */ + txall_queue_for_each(rt2x00dev, queue) { + if (!queue->usb_endpoint) + rt2x00usb_assign_endpoint(queue, tx_ep_desc); + } + + return 0; } -EXPORT_SYMBOL_GPL(rt2x00usb_init_txentry); static int rt2x00usb_alloc_urb(struct rt2x00_dev *rt2x00dev, struct data_queue *queue) @@ -445,6 +535,13 @@ int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev) int status; /* + * Find endpoints for each queue + */ + status = rt2x00usb_find_endpoints(rt2x00dev); + if (status) + goto exit; + + /* * Allocate DMA */ queue_for_each(rt2x00dev, queue) { @@ -534,12 +631,6 @@ int rt2x00usb_probe(struct usb_interface *usb_intf, rt2x00dev->dev = &usb_intf->dev; rt2x00dev->ops = ops; rt2x00dev->hw = hw; - mutex_init(&rt2x00dev->usb_cache_mutex); - - rt2x00dev->usb_maxpacket = - usb_maxpacket(usb_dev, usb_sndbulkpipe(usb_dev, 1), 1); - if (!rt2x00dev->usb_maxpacket) - rt2x00dev->usb_maxpacket = 1; retval = rt2x00usb_alloc_reg(rt2x00dev); if (retval) |