/*
- Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
+ Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
(requesttype == USB_VENDOR_REQUEST_IN) ?
usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
+ if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
+ return -ENODEV;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
status = usb_control_msg(usb_dev, pipe, request, requesttype,
* -ENODEV: Device has disappeared, no point continuing.
* All other errors: Try again.
*/
- else if (status == -ENODEV)
+ else if (status == -ENODEV) {
+ clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
break;
+ }
}
ERROR(rt2x00dev,
{
int status;
- BUG_ON(!mutex_is_locked(&rt2x00dev->usb_cache_mutex));
+ BUG_ON(!mutex_is_locked(&rt2x00dev->csr_mutex));
/*
* Check for Cache availability.
{
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;
}
int rt2x00usb_vendor_request_large_buff(struct rt2x00_dev *rt2x00dev,
const u8 request, const u8 requesttype,
- const u16 offset, void *buffer,
+ const u16 offset, const void *buffer,
const u16 buffer_length,
const int timeout)
{
unsigned char *tb;
u16 off, len, bsize;
- mutex_lock(&rt2x00dev->usb_cache_mutex);
+ mutex_lock(&rt2x00dev->csr_mutex);
- tb = buffer;
+ tb = (char *)buffer;
off = offset;
len = buffer_length;
while (len && !status) {
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,
+ const struct rt2x00_field32 field,
+ u32 *reg)
+{
+ unsigned int i;
+
+ if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
+ return -ENODEV;
+
+ 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.
*/
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct txdone_entry_desc txdesc;
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
+ if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
!test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
return;
/*
- * Remove the descriptor data from the buffer.
- */
- skb_pull(entry->skb, entry->queue->desc_size);
-
- /*
* Obtain the status about this packet.
* Note that when the status is 0 it does not mean the
* frame was send out correctly. It only means the frame
* (Only indirectly by looking at the failed TX counters
* in the register).
*/
+ txdesc.flags = 0;
if (!urb->status)
__set_bit(TXDONE_UNKNOWN, &txdesc.flags);
else
rt2x00lib_txdone(entry, &txdesc);
}
-int rt2x00usb_write_tx_data(struct queue_entry *entry)
+int rt2x00usb_write_tx_data(struct queue_entry *entry,
+ struct txentry_desc *txdesc)
{
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;
- struct skb_frame_desc *skbdesc;
u32 length;
/*
memset(entry->skb->data, 0, entry->queue->desc_size);
/*
- * Fill in skb descriptor
- */
- skbdesc = get_skb_frame_desc(entry->skb);
- skbdesc->desc = entry->skb->data;
- skbdesc->desc_len = entry->queue->desc_size;
-
- /*
* 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(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);
+ /*
+ * Make sure the skb->data pointer points to the frame, not the
+ * descriptor.
+ */
+ skb_pull(entry->skb, entry->queue->desc_size);
+
return 0;
}
EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data);
{
struct queue_entry_priv_usb *entry_priv = entry->priv_data;
- if (__test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags))
+ if (test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags))
usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
}
}
EXPORT_SYMBOL_GPL(rt2x00usb_kick_tx_queue);
+void rt2x00usb_kill_tx_queue(struct rt2x00_dev *rt2x00dev,
+ const enum data_queue_qid qid)
+{
+ struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, qid);
+ struct queue_entry_priv_usb *entry_priv;
+ struct queue_entry_priv_usb_bcn *bcn_priv;
+ unsigned int i;
+ bool kill_guard;
+
+ /*
+ * When killing the beacon queue, we must also kill
+ * the beacon guard byte.
+ */
+ kill_guard =
+ (qid == QID_BEACON) &&
+ (test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags));
+
+ /*
+ * Cancel all entries.
+ */
+ for (i = 0; i < queue->limit; i++) {
+ entry_priv = queue->entries[i].priv_data;
+ usb_kill_urb(entry_priv->urb);
+
+ /*
+ * Kill guardian urb (if required by driver).
+ */
+ if (kill_guard) {
+ bcn_priv = queue->entries[i].priv_data;
+ usb_kill_urb(bcn_priv->guardian_urb);
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(rt2x00usb_kill_tx_queue);
+
/*
* RX data handlers.
*/
struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
u8 rxd[32];
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
+ if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
!test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
return;
* a problem.
*/
if (urb->actual_length < entry->queue->desc_size || urb->status) {
- __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+ set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
usb_submit_urb(urb, GFP_ATOMIC);
return;
}
*/
void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev)
{
- struct queue_entry_priv_usb *entry_priv;
- struct queue_entry_priv_usb_bcn *bcn_priv;
- struct data_queue *queue;
- unsigned int i;
-
rt2x00usb_vendor_request_sw(rt2x00dev, USB_RX_CONTROL, 0, 0,
REGISTER_TIMEOUT);
/*
- * Cancel all queues.
+ * The USB version of kill_tx_queue also works
+ * on the RX queue.
*/
- queue_for_each(rt2x00dev, queue) {
- for (i = 0; i < queue->limit; i++) {
- entry_priv = queue->entries[i].priv_data;
- usb_kill_urb(entry_priv->urb);
- }
- }
-
- /*
- * Kill guardian urb (if required by driver).
- */
- if (!test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags))
- return;
-
- for (i = 0; i < rt2x00dev->bcn->limit; i++) {
- bcn_priv = rt2x00dev->bcn->entries[i].priv_data;
- if (bcn_priv->guardian_urb)
- usb_kill_urb(bcn_priv->guardian_urb);
- }
+ rt2x00dev->ops->lib->kill_tx_queue(rt2x00dev, QID_RX);
}
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);
+ } else {
+ entry->flags = 0;
+ }
+}
+EXPORT_SYMBOL_GPL(rt2x00usb_clear_entry);
+
+static void rt2x00usb_assign_endpoint(struct data_queue *queue,
+ struct usb_endpoint_descriptor *ep_desc)
+{
+ struct usb_device *usb_dev = to_usb_device_intf(queue->rt2x00dev->dev);
+ int pipe;
- __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
- usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
+ 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;
}
-EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry);
-void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
- struct queue_entry *entry)
+static int rt2x00usb_find_endpoints(struct rt2x00_dev *rt2x00dev)
{
- entry->flags = 0;
+ 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) &&
+ (queue != queue_end(rt2x00dev))) {
+ rt2x00usb_assign_endpoint(queue, ep_desc);
+ 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)
int status;
/*
+ * Find endpoints for each queue
+ */
+ status = rt2x00usb_find_endpoints(rt2x00dev);
+ if (status)
+ goto exit;
+
+ /*
* Allocate DMA
*/
queue_for_each(rt2x00dev, queue) {
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;
+ rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_USB);
retval = rt2x00usb_alloc_reg(rt2x00dev);
if (retval)
if (retval)
return retval;
- rt2x00usb_free_reg(rt2x00dev);
-
/*
* Decrease usbdev refcount.
*/
{
struct ieee80211_hw *hw = usb_get_intfdata(usb_intf);
struct rt2x00_dev *rt2x00dev = hw->priv;
- int retval;
usb_get_dev(interface_to_usbdev(usb_intf));
- retval = rt2x00usb_alloc_reg(rt2x00dev);
- if (retval)
- return retval;
-
- retval = rt2x00lib_resume(rt2x00dev);
- if (retval)
- goto exit_free_reg;
-
- return 0;
-
-exit_free_reg:
- rt2x00usb_free_reg(rt2x00dev);
-
- return retval;
+ return rt2x00lib_resume(rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00usb_resume);
#endif /* CONFIG_PM */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff