2007-09-25 20:57:13 -04:00
|
|
|
/*
|
2008-02-03 09:42:53 -05:00
|
|
|
Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
|
2007-09-25 20:57:13 -04:00
|
|
|
<http://rt2x00.serialmonkey.com>
|
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
GNU General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
along with this program; if not, write to the
|
|
|
|
Free Software Foundation, Inc.,
|
|
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
Module: rt2x00usb
|
|
|
|
Abstract: rt2x00 generic usb device routines.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/usb.h>
|
2007-10-27 07:43:29 -04:00
|
|
|
#include <linux/bug.h>
|
2007-09-25 20:57:13 -04:00
|
|
|
|
|
|
|
#include "rt2x00.h"
|
|
|
|
#include "rt2x00usb.h"
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Interfacing with the HW.
|
|
|
|
*/
|
2007-10-27 07:41:25 -04:00
|
|
|
int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
|
2007-09-25 20:57:13 -04:00
|
|
|
const u8 request, const u8 requesttype,
|
|
|
|
const u16 offset, const u16 value,
|
|
|
|
void *buffer, const u16 buffer_length,
|
2007-09-25 14:54:20 -04:00
|
|
|
const int timeout)
|
2007-09-25 20:57:13 -04:00
|
|
|
{
|
|
|
|
struct usb_device *usb_dev =
|
|
|
|
interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
|
|
|
|
int status;
|
|
|
|
unsigned int i;
|
|
|
|
unsigned int pipe =
|
|
|
|
(requesttype == USB_VENDOR_REQUEST_IN) ?
|
|
|
|
usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
|
|
|
|
|
2007-10-27 07:43:29 -04:00
|
|
|
|
2007-09-25 20:57:13 -04:00
|
|
|
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
|
|
|
|
status = usb_control_msg(usb_dev, pipe, request, requesttype,
|
|
|
|
value, offset, buffer, buffer_length,
|
|
|
|
timeout);
|
|
|
|
if (status >= 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
2007-09-25 14:54:20 -04:00
|
|
|
* Check for errors
|
2007-09-25 20:57:13 -04:00
|
|
|
* -ENODEV: Device has disappeared, no point continuing.
|
2007-09-25 14:54:20 -04:00
|
|
|
* All other errors: Try again.
|
2007-09-25 20:57:13 -04:00
|
|
|
*/
|
|
|
|
else if (status == -ENODEV)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
ERROR(rt2x00dev,
|
|
|
|
"Vendor Request 0x%02x failed for offset 0x%04x with error %d.\n",
|
|
|
|
request, offset, status);
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request);
|
|
|
|
|
2007-10-27 07:43:29 -04:00
|
|
|
int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev,
|
|
|
|
const u8 request, const u8 requesttype,
|
|
|
|
const u16 offset, void *buffer,
|
|
|
|
const u16 buffer_length, const int timeout)
|
2007-09-25 20:57:13 -04:00
|
|
|
{
|
|
|
|
int status;
|
|
|
|
|
2007-10-27 07:43:29 -04:00
|
|
|
BUG_ON(!mutex_is_locked(&rt2x00dev->usb_cache_mutex));
|
|
|
|
|
2007-09-25 20:57:13 -04:00
|
|
|
/*
|
|
|
|
* Check for Cache availability.
|
|
|
|
*/
|
|
|
|
if (unlikely(!rt2x00dev->csr_cache || buffer_length > CSR_CACHE_SIZE)) {
|
|
|
|
ERROR(rt2x00dev, "CSR cache not available.\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (requesttype == USB_VENDOR_REQUEST_OUT)
|
|
|
|
memcpy(rt2x00dev->csr_cache, buffer, buffer_length);
|
|
|
|
|
|
|
|
status = rt2x00usb_vendor_request(rt2x00dev, request, requesttype,
|
|
|
|
offset, 0, rt2x00dev->csr_cache,
|
|
|
|
buffer_length, timeout);
|
|
|
|
|
|
|
|
if (!status && requesttype == USB_VENDOR_REQUEST_IN)
|
|
|
|
memcpy(buffer, rt2x00dev->csr_cache, buffer_length);
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
2007-10-27 07:43:29 -04:00
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_vendor_req_buff_lock);
|
|
|
|
|
|
|
|
int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
|
|
|
|
const u8 request, const u8 requesttype,
|
|
|
|
const u16 offset, void *buffer,
|
|
|
|
const u16 buffer_length, const int timeout)
|
|
|
|
{
|
|
|
|
int status;
|
|
|
|
|
|
|
|
mutex_lock(&rt2x00dev->usb_cache_mutex);
|
|
|
|
|
|
|
|
status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request,
|
|
|
|
requesttype, offset, buffer,
|
|
|
|
buffer_length, timeout);
|
|
|
|
|
|
|
|
mutex_unlock(&rt2x00dev->usb_cache_mutex);
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
2007-09-25 20:57:13 -04:00
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* TX data handlers.
|
|
|
|
*/
|
|
|
|
static void rt2x00usb_interrupt_txdone(struct urb *urb)
|
|
|
|
{
|
|
|
|
struct data_entry *entry = (struct data_entry *)urb->context;
|
|
|
|
struct data_ring *ring = entry->ring;
|
|
|
|
struct rt2x00_dev *rt2x00dev = ring->rt2x00dev;
|
2008-01-24 03:48:03 -05:00
|
|
|
__le32 *txd = (__le32 *)entry->skb->data;
|
2007-09-25 20:57:13 -04:00
|
|
|
u32 word;
|
|
|
|
int tx_status;
|
|
|
|
|
|
|
|
if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
|
|
|
|
!__test_and_clear_bit(ENTRY_OWNER_NIC, &entry->flags))
|
|
|
|
return;
|
|
|
|
|
|
|
|
rt2x00_desc_read(txd, 0, &word);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remove the descriptor data from the buffer.
|
|
|
|
*/
|
|
|
|
skb_pull(entry->skb, ring->desc_size);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Obtain the status about this packet.
|
|
|
|
*/
|
|
|
|
tx_status = !urb->status ? TX_SUCCESS : TX_FAIL_RETRY;
|
|
|
|
|
|
|
|
rt2x00lib_txdone(entry, tx_status, 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make this entry available for reuse.
|
|
|
|
*/
|
|
|
|
entry->flags = 0;
|
|
|
|
rt2x00_ring_index_done_inc(entry->ring);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the data ring was full before the txdone handler
|
|
|
|
* we must make sure the packet queue in the mac80211 stack
|
|
|
|
* is reenabled when the txdone handler has finished.
|
|
|
|
*/
|
|
|
|
if (!rt2x00_ring_full(ring))
|
|
|
|
ieee80211_wake_queue(rt2x00dev->hw,
|
|
|
|
entry->tx_status.control.queue);
|
|
|
|
}
|
|
|
|
|
|
|
|
int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
|
|
|
|
struct data_ring *ring, struct sk_buff *skb,
|
|
|
|
struct ieee80211_tx_control *control)
|
|
|
|
{
|
|
|
|
struct usb_device *usb_dev =
|
|
|
|
interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
|
|
|
|
struct data_entry *entry = rt2x00_get_data_entry(ring);
|
2008-01-24 04:56:25 -05:00
|
|
|
struct skb_desc *desc;
|
2007-10-06 08:15:46 -04:00
|
|
|
u32 length;
|
2007-09-25 20:57:13 -04:00
|
|
|
|
2008-01-06 17:38:34 -05:00
|
|
|
if (rt2x00_ring_full(ring))
|
2007-09-25 20:57:13 -04:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (test_bit(ENTRY_OWNER_NIC, &entry->flags)) {
|
|
|
|
ERROR(rt2x00dev,
|
|
|
|
"Arrived at non-free entry in the non-full queue %d.\n"
|
|
|
|
"Please file bug report to %s.\n",
|
|
|
|
control->queue, DRV_PROJECT);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Add the descriptor in front of the skb.
|
|
|
|
*/
|
2007-10-06 08:15:46 -04:00
|
|
|
skb_push(skb, ring->desc_size);
|
|
|
|
memset(skb->data, 0, ring->desc_size);
|
2007-09-25 20:57:13 -04:00
|
|
|
|
2008-01-24 04:56:25 -05:00
|
|
|
/*
|
|
|
|
* Fill in skb descriptor
|
|
|
|
*/
|
|
|
|
desc = get_skb_desc(skb);
|
|
|
|
desc->desc_len = ring->desc_size;
|
|
|
|
desc->data_len = skb->len - ring->desc_size;
|
|
|
|
desc->desc = skb->data;
|
|
|
|
desc->data = skb->data + ring->desc_size;
|
|
|
|
desc->ring = ring;
|
|
|
|
desc->entry = entry;
|
|
|
|
|
|
|
|
rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
|
2007-09-25 20:57:13 -04:00
|
|
|
|
|
|
|
/*
|
2007-10-06 08:15:46 -04:00
|
|
|
* 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.
|
2007-09-25 20:57:13 -04:00
|
|
|
*/
|
2007-11-15 17:41:31 -05:00
|
|
|
length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, skb);
|
2007-09-25 20:57:13 -04:00
|
|
|
|
2007-10-06 08:15:46 -04:00
|
|
|
/*
|
|
|
|
* Initialize URB and send the frame to the device.
|
|
|
|
*/
|
2007-09-25 20:57:13 -04:00
|
|
|
__set_bit(ENTRY_OWNER_NIC, &entry->flags);
|
2008-01-24 04:56:25 -05:00
|
|
|
usb_fill_bulk_urb(entry->priv, usb_dev, usb_sndbulkpipe(usb_dev, 1),
|
2007-09-25 20:57:13 -04:00
|
|
|
skb->data, length, rt2x00usb_interrupt_txdone, entry);
|
|
|
|
usb_submit_urb(entry->priv, GFP_ATOMIC);
|
|
|
|
|
|
|
|
rt2x00_ring_index_inc(ring);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* RX data handlers.
|
|
|
|
*/
|
|
|
|
static void rt2x00usb_interrupt_rxdone(struct urb *urb)
|
|
|
|
{
|
|
|
|
struct data_entry *entry = (struct data_entry *)urb->context;
|
|
|
|
struct data_ring *ring = entry->ring;
|
|
|
|
struct rt2x00_dev *rt2x00dev = ring->rt2x00dev;
|
|
|
|
struct sk_buff *skb;
|
2008-01-06 17:40:27 -05:00
|
|
|
struct ieee80211_hdr *hdr;
|
2008-01-24 04:56:25 -05:00
|
|
|
struct skb_desc *skbdesc;
|
[PATCH] mac80211: revamp interface and filter configuration
Drivers are currently supposed to keep track of monitor
interfaces if they allow so-called "hard" monitor, and
they are also supposed to keep track of multicast etc.
This patch changes that, replaces the set_multicast_list()
callback with a new configure_filter() callback that takes
filter flags (FIF_*) instead of interface flags (IFF_*).
For a driver, this means it should open the filter as much
as necessary to get all frames requested by the filter flags.
Accordingly, the filter flags are named "positively", e.g.
FIF_ALLMULTI.
Multicast filtering is a bit special in that drivers that
have no multicast address filters need to allow multicast
frames through when either the FIF_ALLMULTI flag is set or
when the mc_count value is positive.
At the same time, drivers are no longer notified about
monitor interfaces at all, this means they now need to
implement the start() and stop() callbacks and the new
change_filter_flags() callback. Also, the start()/stop()
ordering changed, start() is now called *before* any
add_interface() as it really should be, and stop() after
any remove_interface().
The patch also changes the behaviour of setting the bssid
to multicast for scanning when IEEE80211_HW_NO_PROBE_FILTERING
is set; the IEEE80211_HW_NO_PROBE_FILTERING flag is removed
and the filter flag FIF_BCN_PRBRESP_PROMISC introduced.
This is a lot more efficient for hardware like b43 that
supports it and other hardware can still set the BSSID
to all-ones.
Driver modifications by Johannes Berg (b43 & iwlwifi), Michael Wu
(rtl8187, adm8211, and p54), Larry Finger (b43legacy), and
Ivo van Doorn (rt2x00).
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-09-17 01:29:23 -04:00
|
|
|
struct rxdata_entry_desc desc;
|
2008-01-06 17:40:27 -05:00
|
|
|
int header_size;
|
2007-09-25 20:57:13 -04:00
|
|
|
int frame_size;
|
|
|
|
|
|
|
|
if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
|
|
|
|
!test_and_clear_bit(ENTRY_OWNER_NIC, &entry->flags))
|
|
|
|
return;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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->ring->desc_size || urb->status)
|
|
|
|
goto skip_entry;
|
|
|
|
|
2008-01-10 16:02:44 -05:00
|
|
|
/*
|
|
|
|
* Fill in skb descriptor
|
|
|
|
*/
|
|
|
|
skbdesc = get_skb_desc(entry->skb);
|
|
|
|
skbdesc->ring = ring;
|
|
|
|
skbdesc->entry = entry;
|
|
|
|
|
2008-01-24 04:56:25 -05:00
|
|
|
memset(&desc, 0, sizeof(desc));
|
[PATCH] mac80211: revamp interface and filter configuration
Drivers are currently supposed to keep track of monitor
interfaces if they allow so-called "hard" monitor, and
they are also supposed to keep track of multicast etc.
This patch changes that, replaces the set_multicast_list()
callback with a new configure_filter() callback that takes
filter flags (FIF_*) instead of interface flags (IFF_*).
For a driver, this means it should open the filter as much
as necessary to get all frames requested by the filter flags.
Accordingly, the filter flags are named "positively", e.g.
FIF_ALLMULTI.
Multicast filtering is a bit special in that drivers that
have no multicast address filters need to allow multicast
frames through when either the FIF_ALLMULTI flag is set or
when the mc_count value is positive.
At the same time, drivers are no longer notified about
monitor interfaces at all, this means they now need to
implement the start() and stop() callbacks and the new
change_filter_flags() callback. Also, the start()/stop()
ordering changed, start() is now called *before* any
add_interface() as it really should be, and stop() after
any remove_interface().
The patch also changes the behaviour of setting the bssid
to multicast for scanning when IEEE80211_HW_NO_PROBE_FILTERING
is set; the IEEE80211_HW_NO_PROBE_FILTERING flag is removed
and the filter flag FIF_BCN_PRBRESP_PROMISC introduced.
This is a lot more efficient for hardware like b43 that
supports it and other hardware can still set the BSSID
to all-ones.
Driver modifications by Johannes Berg (b43 & iwlwifi), Michael Wu
(rtl8187, adm8211, and p54), Larry Finger (b43legacy), and
Ivo van Doorn (rt2x00).
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-09-17 01:29:23 -04:00
|
|
|
rt2x00dev->ops->lib->fill_rxdone(entry, &desc);
|
2007-09-25 20:57:13 -04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate a new sk buffer to replace the current one.
|
|
|
|
* If allocation fails, we should drop the current frame
|
|
|
|
* so we can recycle the existing sk buffer for the new frame.
|
2008-01-11 14:53:07 -05:00
|
|
|
* As alignment we use 2 and not NET_IP_ALIGN because we need
|
|
|
|
* to be sure we have 2 bytes room in the head. (NET_IP_ALIGN
|
|
|
|
* can be 0 on some hardware). We use these 2 bytes for frame
|
|
|
|
* alignment later, we assume that the chance that
|
|
|
|
* header_size % 4 == 2 is bigger then header_size % 2 == 0
|
|
|
|
* and thus optimize alignment by reserving the 2 bytes in
|
|
|
|
* advance.
|
2007-09-25 20:57:13 -04:00
|
|
|
*/
|
|
|
|
frame_size = entry->ring->data_size + entry->ring->desc_size;
|
2008-01-11 14:53:07 -05:00
|
|
|
skb = dev_alloc_skb(frame_size + 2);
|
2007-09-25 20:57:13 -04:00
|
|
|
if (!skb)
|
|
|
|
goto skip_entry;
|
|
|
|
|
2008-01-11 14:53:07 -05:00
|
|
|
skb_reserve(skb, 2);
|
2007-09-25 20:57:13 -04:00
|
|
|
skb_put(skb, frame_size);
|
|
|
|
|
|
|
|
/*
|
2008-01-06 17:40:27 -05:00
|
|
|
* The data behind the ieee80211 header must be
|
|
|
|
* aligned on a 4 byte boundary.
|
2007-09-25 20:57:13 -04:00
|
|
|
*/
|
2008-01-06 17:40:27 -05:00
|
|
|
hdr = (struct ieee80211_hdr *)entry->skb->data;
|
|
|
|
header_size =
|
|
|
|
ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
|
|
|
|
|
|
|
|
if (header_size % 4 == 0) {
|
|
|
|
skb_push(entry->skb, 2);
|
|
|
|
memmove(entry->skb->data, entry->skb->data + 2, skb->len - 2);
|
|
|
|
}
|
2007-09-25 20:57:13 -04:00
|
|
|
|
2008-01-24 04:56:25 -05:00
|
|
|
/*
|
2008-01-10 16:02:44 -05:00
|
|
|
* Trim the entire buffer down to only contain the valid frame data
|
|
|
|
* excluding the device descriptor. The position of the descriptor
|
|
|
|
* varies. This means that we should check where the descriptor is
|
|
|
|
* and decide if we need to pull the data pointer to exclude the
|
|
|
|
* device descriptor.
|
2008-01-24 04:56:25 -05:00
|
|
|
*/
|
2008-01-10 16:02:44 -05:00
|
|
|
if (skbdesc->data > skbdesc->desc)
|
|
|
|
skb_pull(entry->skb, skbdesc->desc_len);
|
|
|
|
skb_trim(entry->skb, desc.size);
|
2008-01-24 04:56:25 -05:00
|
|
|
|
2007-09-25 20:57:13 -04:00
|
|
|
/*
|
|
|
|
* Send the frame to rt2x00lib for further processing.
|
|
|
|
*/
|
[PATCH] mac80211: revamp interface and filter configuration
Drivers are currently supposed to keep track of monitor
interfaces if they allow so-called "hard" monitor, and
they are also supposed to keep track of multicast etc.
This patch changes that, replaces the set_multicast_list()
callback with a new configure_filter() callback that takes
filter flags (FIF_*) instead of interface flags (IFF_*).
For a driver, this means it should open the filter as much
as necessary to get all frames requested by the filter flags.
Accordingly, the filter flags are named "positively", e.g.
FIF_ALLMULTI.
Multicast filtering is a bit special in that drivers that
have no multicast address filters need to allow multicast
frames through when either the FIF_ALLMULTI flag is set or
when the mc_count value is positive.
At the same time, drivers are no longer notified about
monitor interfaces at all, this means they now need to
implement the start() and stop() callbacks and the new
change_filter_flags() callback. Also, the start()/stop()
ordering changed, start() is now called *before* any
add_interface() as it really should be, and stop() after
any remove_interface().
The patch also changes the behaviour of setting the bssid
to multicast for scanning when IEEE80211_HW_NO_PROBE_FILTERING
is set; the IEEE80211_HW_NO_PROBE_FILTERING flag is removed
and the filter flag FIF_BCN_PRBRESP_PROMISC introduced.
This is a lot more efficient for hardware like b43 that
supports it and other hardware can still set the BSSID
to all-ones.
Driver modifications by Johannes Berg (b43 & iwlwifi), Michael Wu
(rtl8187, adm8211, and p54), Larry Finger (b43legacy), and
Ivo van Doorn (rt2x00).
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-09-17 01:29:23 -04:00
|
|
|
rt2x00lib_rxdone(entry, entry->skb, &desc);
|
2007-09-25 20:57:13 -04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Replace current entry's skb with the newly allocated one,
|
|
|
|
* and reinitialize the urb.
|
|
|
|
*/
|
|
|
|
entry->skb = skb;
|
|
|
|
urb->transfer_buffer = entry->skb->data;
|
|
|
|
urb->transfer_buffer_length = entry->skb->len;
|
|
|
|
|
|
|
|
skip_entry:
|
|
|
|
if (test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags)) {
|
|
|
|
__set_bit(ENTRY_OWNER_NIC, &entry->flags);
|
|
|
|
usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
}
|
|
|
|
|
|
|
|
rt2x00_ring_index_inc(ring);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Radio handlers
|
|
|
|
*/
|
|
|
|
void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev)
|
|
|
|
{
|
|
|
|
struct data_ring *ring;
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
rt2x00usb_vendor_request_sw(rt2x00dev, USB_RX_CONTROL, 0x0000, 0x0000,
|
|
|
|
REGISTER_TIMEOUT);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Cancel all rings.
|
|
|
|
*/
|
|
|
|
ring_for_each(rt2x00dev, ring) {
|
|
|
|
for (i = 0; i < ring->stats.limit; i++)
|
|
|
|
usb_kill_urb(ring->entry[i].priv);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Device initialization handlers.
|
|
|
|
*/
|
2008-01-06 17:41:45 -05:00
|
|
|
void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
|
|
|
|
struct data_entry *entry)
|
|
|
|
{
|
|
|
|
struct usb_device *usb_dev =
|
|
|
|
interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
|
|
|
|
|
|
|
|
usb_fill_bulk_urb(entry->priv, usb_dev,
|
|
|
|
usb_rcvbulkpipe(usb_dev, 1),
|
|
|
|
entry->skb->data, entry->skb->len,
|
|
|
|
rt2x00usb_interrupt_rxdone, entry);
|
|
|
|
|
|
|
|
__set_bit(ENTRY_OWNER_NIC, &entry->flags);
|
|
|
|
usb_submit_urb(entry->priv, GFP_ATOMIC);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry);
|
|
|
|
|
|
|
|
void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
|
|
|
|
struct data_entry *entry)
|
|
|
|
{
|
|
|
|
entry->flags = 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_init_txentry);
|
|
|
|
|
2007-09-25 20:57:13 -04:00
|
|
|
static int rt2x00usb_alloc_urb(struct rt2x00_dev *rt2x00dev,
|
|
|
|
struct data_ring *ring)
|
|
|
|
{
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate the URB's
|
|
|
|
*/
|
|
|
|
for (i = 0; i < ring->stats.limit; i++) {
|
|
|
|
ring->entry[i].priv = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
|
if (!ring->entry[i].priv)
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rt2x00usb_free_urb(struct rt2x00_dev *rt2x00dev,
|
|
|
|
struct data_ring *ring)
|
|
|
|
{
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
if (!ring->entry)
|
|
|
|
return;
|
|
|
|
|
|
|
|
for (i = 0; i < ring->stats.limit; i++) {
|
|
|
|
usb_kill_urb(ring->entry[i].priv);
|
|
|
|
usb_free_urb(ring->entry[i].priv);
|
|
|
|
if (ring->entry[i].skb)
|
|
|
|
kfree_skb(ring->entry[i].skb);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev)
|
|
|
|
{
|
|
|
|
struct data_ring *ring;
|
|
|
|
struct sk_buff *skb;
|
|
|
|
unsigned int entry_size;
|
|
|
|
unsigned int i;
|
2008-01-16 05:58:24 -05:00
|
|
|
int uninitialized_var(status);
|
2007-09-25 20:57:13 -04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate DMA
|
|
|
|
*/
|
|
|
|
ring_for_each(rt2x00dev, ring) {
|
|
|
|
status = rt2x00usb_alloc_urb(rt2x00dev, ring);
|
|
|
|
if (status)
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* For the RX ring, skb's should be allocated.
|
|
|
|
*/
|
|
|
|
entry_size = rt2x00dev->rx->data_size + rt2x00dev->rx->desc_size;
|
|
|
|
for (i = 0; i < rt2x00dev->rx->stats.limit; i++) {
|
|
|
|
skb = dev_alloc_skb(NET_IP_ALIGN + entry_size);
|
|
|
|
if (!skb)
|
|
|
|
goto exit;
|
|
|
|
|
|
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
|
|
skb_put(skb, entry_size);
|
|
|
|
|
|
|
|
rt2x00dev->rx->entry[i].skb = skb;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
exit:
|
|
|
|
rt2x00usb_uninitialize(rt2x00dev);
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_initialize);
|
|
|
|
|
|
|
|
void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev)
|
|
|
|
{
|
|
|
|
struct data_ring *ring;
|
|
|
|
|
|
|
|
ring_for_each(rt2x00dev, ring)
|
|
|
|
rt2x00usb_free_urb(rt2x00dev, ring);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_uninitialize);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* USB driver handlers.
|
|
|
|
*/
|
|
|
|
static void rt2x00usb_free_reg(struct rt2x00_dev *rt2x00dev)
|
|
|
|
{
|
|
|
|
kfree(rt2x00dev->rf);
|
|
|
|
rt2x00dev->rf = NULL;
|
|
|
|
|
|
|
|
kfree(rt2x00dev->eeprom);
|
|
|
|
rt2x00dev->eeprom = NULL;
|
|
|
|
|
|
|
|
kfree(rt2x00dev->csr_cache);
|
|
|
|
rt2x00dev->csr_cache = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rt2x00usb_alloc_reg(struct rt2x00_dev *rt2x00dev)
|
|
|
|
{
|
|
|
|
rt2x00dev->csr_cache = kzalloc(CSR_CACHE_SIZE, GFP_KERNEL);
|
|
|
|
if (!rt2x00dev->csr_cache)
|
|
|
|
goto exit;
|
|
|
|
|
|
|
|
rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
|
|
|
|
if (!rt2x00dev->eeprom)
|
|
|
|
goto exit;
|
|
|
|
|
|
|
|
rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
|
|
|
|
if (!rt2x00dev->rf)
|
|
|
|
goto exit;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
exit:
|
|
|
|
ERROR_PROBE("Failed to allocate registers.\n");
|
|
|
|
|
|
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
int rt2x00usb_probe(struct usb_interface *usb_intf,
|
|
|
|
const struct usb_device_id *id)
|
|
|
|
{
|
|
|
|
struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
|
|
|
|
struct rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_info;
|
|
|
|
struct ieee80211_hw *hw;
|
|
|
|
struct rt2x00_dev *rt2x00dev;
|
|
|
|
int retval;
|
|
|
|
|
|
|
|
usb_dev = usb_get_dev(usb_dev);
|
|
|
|
|
|
|
|
hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
|
|
|
|
if (!hw) {
|
|
|
|
ERROR_PROBE("Failed to allocate hardware.\n");
|
|
|
|
retval = -ENOMEM;
|
|
|
|
goto exit_put_device;
|
|
|
|
}
|
|
|
|
|
|
|
|
usb_set_intfdata(usb_intf, hw);
|
|
|
|
|
|
|
|
rt2x00dev = hw->priv;
|
|
|
|
rt2x00dev->dev = usb_intf;
|
|
|
|
rt2x00dev->ops = ops;
|
|
|
|
rt2x00dev->hw = hw;
|
2007-10-27 07:43:29 -04:00
|
|
|
mutex_init(&rt2x00dev->usb_cache_mutex);
|
2007-09-25 20:57:13 -04:00
|
|
|
|
2007-11-15 17:41:31 -05:00
|
|
|
rt2x00dev->usb_maxpacket =
|
|
|
|
usb_maxpacket(usb_dev, usb_sndbulkpipe(usb_dev, 1), 1);
|
|
|
|
if (!rt2x00dev->usb_maxpacket)
|
|
|
|
rt2x00dev->usb_maxpacket = 1;
|
|
|
|
|
2007-09-25 20:57:13 -04:00
|
|
|
retval = rt2x00usb_alloc_reg(rt2x00dev);
|
|
|
|
if (retval)
|
|
|
|
goto exit_free_device;
|
|
|
|
|
|
|
|
retval = rt2x00lib_probe_dev(rt2x00dev);
|
|
|
|
if (retval)
|
|
|
|
goto exit_free_reg;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
exit_free_reg:
|
|
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
|
|
|
|
exit_free_device:
|
|
|
|
ieee80211_free_hw(hw);
|
|
|
|
|
|
|
|
exit_put_device:
|
|
|
|
usb_put_dev(usb_dev);
|
|
|
|
|
|
|
|
usb_set_intfdata(usb_intf, NULL);
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_probe);
|
|
|
|
|
|
|
|
void rt2x00usb_disconnect(struct usb_interface *usb_intf)
|
|
|
|
{
|
|
|
|
struct ieee80211_hw *hw = usb_get_intfdata(usb_intf);
|
|
|
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free all allocated data.
|
|
|
|
*/
|
|
|
|
rt2x00lib_remove_dev(rt2x00dev);
|
|
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
ieee80211_free_hw(hw);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free the USB device data.
|
|
|
|
*/
|
|
|
|
usb_set_intfdata(usb_intf, NULL);
|
|
|
|
usb_put_dev(interface_to_usbdev(usb_intf));
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_disconnect);
|
|
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state)
|
|
|
|
{
|
|
|
|
struct ieee80211_hw *hw = usb_get_intfdata(usb_intf);
|
|
|
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
|
|
|
int retval;
|
|
|
|
|
|
|
|
retval = rt2x00lib_suspend(rt2x00dev, state);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Decrease usbdev refcount.
|
|
|
|
*/
|
|
|
|
usb_put_dev(interface_to_usbdev(usb_intf));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_suspend);
|
|
|
|
|
|
|
|
int rt2x00usb_resume(struct usb_interface *usb_intf)
|
|
|
|
{
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_resume);
|
|
|
|
#endif /* CONFIG_PM */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* rt2x00pci module information.
|
|
|
|
*/
|
|
|
|
MODULE_AUTHOR(DRV_PROJECT);
|
|
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|
|
MODULE_DESCRIPTION("rt2x00 library");
|
|
|
|
MODULE_LICENSE("GPL");
|