Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1 | /* |
Ivo van Doorn | 811aa9c | 2008-02-03 15:42:53 +0100 | [diff] [blame] | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 3 | <http://rt2x00.serialmonkey.com> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the |
| 17 | Free Software Foundation, Inc., |
| 18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | Module: rt2x00usb |
| 23 | Abstract: rt2x00 generic usb device routines. |
| 24 | */ |
| 25 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/usb.h> |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 29 | #include <linux/bug.h> |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 30 | |
| 31 | #include "rt2x00.h" |
| 32 | #include "rt2x00usb.h" |
| 33 | |
| 34 | /* |
| 35 | * Interfacing with the HW. |
| 36 | */ |
Adam Baker | 0e14f6d | 2007-10-27 13:41:25 +0200 | [diff] [blame] | 37 | int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 38 | const u8 request, const u8 requesttype, |
| 39 | const u16 offset, const u16 value, |
| 40 | void *buffer, const u16 buffer_length, |
Ivo van Doorn | e913655 | 2007-09-25 20:54:20 +0200 | [diff] [blame] | 41 | const int timeout) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 42 | { |
Gertjan van Wingerde | 14a3bf8 | 2008-06-16 19:55:43 +0200 | [diff] [blame] | 43 | struct usb_device *usb_dev = |
| 44 | interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 45 | int status; |
| 46 | unsigned int i; |
| 47 | unsigned int pipe = |
| 48 | (requesttype == USB_VENDOR_REQUEST_IN) ? |
| 49 | usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0); |
| 50 | |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 51 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 52 | for (i = 0; i < REGISTER_BUSY_COUNT; i++) { |
| 53 | status = usb_control_msg(usb_dev, pipe, request, requesttype, |
| 54 | value, offset, buffer, buffer_length, |
| 55 | timeout); |
| 56 | if (status >= 0) |
| 57 | return 0; |
| 58 | |
| 59 | /* |
Ivo van Doorn | e913655 | 2007-09-25 20:54:20 +0200 | [diff] [blame] | 60 | * Check for errors |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 61 | * -ENODEV: Device has disappeared, no point continuing. |
Ivo van Doorn | e913655 | 2007-09-25 20:54:20 +0200 | [diff] [blame] | 62 | * All other errors: Try again. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 63 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 64 | else if (status == -ENODEV) |
| 65 | break; |
| 66 | } |
| 67 | |
| 68 | ERROR(rt2x00dev, |
| 69 | "Vendor Request 0x%02x failed for offset 0x%04x with error %d.\n", |
| 70 | request, offset, status); |
| 71 | |
| 72 | return status; |
| 73 | } |
| 74 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request); |
| 75 | |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 76 | int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev, |
| 77 | const u8 request, const u8 requesttype, |
| 78 | const u16 offset, void *buffer, |
| 79 | const u16 buffer_length, const int timeout) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 80 | { |
| 81 | int status; |
| 82 | |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 83 | BUG_ON(!mutex_is_locked(&rt2x00dev->usb_cache_mutex)); |
| 84 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 85 | /* |
| 86 | * Check for Cache availability. |
| 87 | */ |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 88 | if (unlikely(!rt2x00dev->csr.cache || buffer_length > CSR_CACHE_SIZE)) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 89 | ERROR(rt2x00dev, "CSR cache not available.\n"); |
| 90 | return -ENOMEM; |
| 91 | } |
| 92 | |
| 93 | if (requesttype == USB_VENDOR_REQUEST_OUT) |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 94 | memcpy(rt2x00dev->csr.cache, buffer, buffer_length); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 95 | |
| 96 | status = rt2x00usb_vendor_request(rt2x00dev, request, requesttype, |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 97 | offset, 0, rt2x00dev->csr.cache, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 98 | buffer_length, timeout); |
| 99 | |
| 100 | if (!status && requesttype == USB_VENDOR_REQUEST_IN) |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 101 | memcpy(buffer, rt2x00dev->csr.cache, buffer_length); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 102 | |
| 103 | return status; |
| 104 | } |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 105 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_req_buff_lock); |
| 106 | |
| 107 | int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev, |
| 108 | const u8 request, const u8 requesttype, |
| 109 | const u16 offset, void *buffer, |
| 110 | const u16 buffer_length, const int timeout) |
| 111 | { |
| 112 | int status; |
| 113 | |
| 114 | mutex_lock(&rt2x00dev->usb_cache_mutex); |
| 115 | |
| 116 | status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request, |
| 117 | requesttype, offset, buffer, |
| 118 | buffer_length, timeout); |
| 119 | |
| 120 | mutex_unlock(&rt2x00dev->usb_cache_mutex); |
| 121 | |
| 122 | return status; |
| 123 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 124 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff); |
| 125 | |
| 126 | /* |
| 127 | * TX data handlers. |
| 128 | */ |
| 129 | static void rt2x00usb_interrupt_txdone(struct urb *urb) |
| 130 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 131 | struct queue_entry *entry = (struct queue_entry *)urb->context; |
| 132 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 133 | struct txdone_entry_desc txdesc; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 134 | enum data_queue_qid qid = skb_get_queue_mapping(entry->skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 135 | |
| 136 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 137 | !__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 138 | return; |
| 139 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 140 | /* |
| 141 | * Remove the descriptor data from the buffer. |
| 142 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 143 | skb_pull(entry->skb, entry->queue->desc_size); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 144 | |
| 145 | /* |
| 146 | * Obtain the status about this packet. |
Ivo van Doorn | fb55f4d | 2008-05-10 13:42:06 +0200 | [diff] [blame] | 147 | * Note that when the status is 0 it does not mean the |
| 148 | * frame was send out correctly. It only means the frame |
| 149 | * was succesfully pushed to the hardware, we have no |
| 150 | * way to determine the transmission status right now. |
| 151 | * (Only indirectly by looking at the failed TX counters |
| 152 | * in the register). |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 153 | */ |
Ivo van Doorn | fb55f4d | 2008-05-10 13:42:06 +0200 | [diff] [blame] | 154 | if (!urb->status) |
| 155 | __set_bit(TXDONE_UNKNOWN, &txdesc.flags); |
| 156 | else |
| 157 | __set_bit(TXDONE_FAILURE, &txdesc.flags); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 158 | txdesc.retry = 0; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 159 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 160 | rt2x00lib_txdone(entry, &txdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 161 | |
| 162 | /* |
| 163 | * Make this entry available for reuse. |
| 164 | */ |
| 165 | entry->flags = 0; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 166 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 167 | |
| 168 | /* |
Ivo van Doorn | b869767 | 2008-06-06 22:53:14 +0200 | [diff] [blame] | 169 | * If the data queue was below the threshold before the txdone |
| 170 | * handler we must make sure the packet queue in the mac80211 stack |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 171 | * is reenabled when the txdone handler has finished. |
| 172 | */ |
Ivo van Doorn | b869767 | 2008-06-06 22:53:14 +0200 | [diff] [blame] | 173 | if (!rt2x00queue_threshold(entry->queue)) |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 174 | ieee80211_wake_queue(rt2x00dev->hw, qid); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 175 | } |
| 176 | |
Ivo van Doorn | 6db3786 | 2008-06-06 22:50:28 +0200 | [diff] [blame] | 177 | int rt2x00usb_write_tx_data(struct queue_entry *entry) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 178 | { |
Ivo van Doorn | 6db3786 | 2008-06-06 22:50:28 +0200 | [diff] [blame] | 179 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
Gertjan van Wingerde | 14a3bf8 | 2008-06-16 19:55:43 +0200 | [diff] [blame] | 180 | struct usb_device *usb_dev = |
| 181 | interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 182 | struct queue_entry_priv_usb *entry_priv = entry->priv_data; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 183 | struct skb_frame_desc *skbdesc; |
Ivo van Doorn | dd9fa2d | 2007-10-06 14:15:46 +0200 | [diff] [blame] | 184 | u32 length; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 185 | |
Ivo van Doorn | 7050ec8 | 2008-05-10 13:46:13 +0200 | [diff] [blame] | 186 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 187 | * Add the descriptor in front of the skb. |
| 188 | */ |
Ivo van Doorn | 6db3786 | 2008-06-06 22:50:28 +0200 | [diff] [blame] | 189 | skb_push(entry->skb, entry->queue->desc_size); |
| 190 | memset(entry->skb->data, 0, entry->queue->desc_size); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 191 | |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 192 | /* |
| 193 | * Fill in skb descriptor |
| 194 | */ |
Ivo van Doorn | 6db3786 | 2008-06-06 22:50:28 +0200 | [diff] [blame] | 195 | skbdesc = get_skb_frame_desc(entry->skb); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 196 | memset(skbdesc, 0, sizeof(*skbdesc)); |
Ivo van Doorn | 6db3786 | 2008-06-06 22:50:28 +0200 | [diff] [blame] | 197 | skbdesc->desc = entry->skb->data; |
| 198 | skbdesc->desc_len = entry->queue->desc_size; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 199 | skbdesc->entry = entry; |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 200 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 201 | /* |
Ivo van Doorn | dd9fa2d | 2007-10-06 14:15:46 +0200 | [diff] [blame] | 202 | * USB devices cannot blindly pass the skb->len as the |
| 203 | * length of the data to usb_fill_bulk_urb. Pass the skb |
| 204 | * to the driver to determine what the length should be. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 205 | */ |
Ivo van Doorn | 6db3786 | 2008-06-06 22:50:28 +0200 | [diff] [blame] | 206 | length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, entry->skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 207 | |
Ivo van Doorn | 6db3786 | 2008-06-06 22:50:28 +0200 | [diff] [blame] | 208 | usb_fill_bulk_urb(entry_priv->urb, usb_dev, |
| 209 | usb_sndbulkpipe(usb_dev, 1), |
| 210 | entry->skb->data, length, |
| 211 | rt2x00usb_interrupt_txdone, entry); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 212 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 213 | return 0; |
| 214 | } |
| 215 | EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data); |
| 216 | |
Ivo van Doorn | f019d51 | 2008-06-06 22:47:39 +0200 | [diff] [blame] | 217 | static inline void rt2x00usb_kick_tx_entry(struct queue_entry *entry) |
| 218 | { |
| 219 | struct queue_entry_priv_usb *entry_priv = entry->priv_data; |
| 220 | |
| 221 | if (__test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags)) |
| 222 | usb_submit_urb(entry_priv->urb, GFP_ATOMIC); |
| 223 | } |
| 224 | |
| 225 | void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev, |
| 226 | const enum data_queue_qid qid) |
| 227 | { |
| 228 | struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, qid); |
| 229 | unsigned long irqflags; |
| 230 | unsigned int index; |
| 231 | unsigned int index_done; |
| 232 | unsigned int i; |
| 233 | |
| 234 | /* |
| 235 | * Only protect the range we are going to loop over, |
| 236 | * if during our loop a extra entry is set to pending |
| 237 | * it should not be kicked during this run, since it |
| 238 | * is part of another TX operation. |
| 239 | */ |
| 240 | spin_lock_irqsave(&queue->lock, irqflags); |
| 241 | index = queue->index[Q_INDEX]; |
| 242 | index_done = queue->index[Q_INDEX_DONE]; |
| 243 | spin_unlock_irqrestore(&queue->lock, irqflags); |
| 244 | |
| 245 | /* |
| 246 | * Start from the TX done pointer, this guarentees that we will |
| 247 | * send out all frames in the correct order. |
| 248 | */ |
| 249 | if (index_done < index) { |
| 250 | for (i = index_done; i < index; i++) |
| 251 | rt2x00usb_kick_tx_entry(&queue->entries[i]); |
| 252 | } else { |
| 253 | for (i = index_done; i < queue->limit; i++) |
| 254 | rt2x00usb_kick_tx_entry(&queue->entries[i]); |
| 255 | |
| 256 | for (i = 0; i < index; i++) |
| 257 | rt2x00usb_kick_tx_entry(&queue->entries[i]); |
| 258 | } |
| 259 | } |
| 260 | EXPORT_SYMBOL_GPL(rt2x00usb_kick_tx_queue); |
| 261 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 262 | /* |
| 263 | * RX data handlers. |
| 264 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 265 | static void rt2x00usb_interrupt_rxdone(struct urb *urb) |
| 266 | { |
| 267 | struct queue_entry *entry = (struct queue_entry *)urb->context; |
| 268 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
| 269 | struct sk_buff *skb; |
| 270 | struct skb_frame_desc *skbdesc; |
| 271 | struct rxdone_entry_desc rxdesc; |
Gertjan van Wingerde | a26cbc6 | 2008-06-06 22:54:28 +0200 | [diff] [blame] | 272 | u8 rxd[32]; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 273 | |
| 274 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || |
| 275 | !test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) |
| 276 | return; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 277 | |
| 278 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 279 | * Check if the received data is simply too small |
| 280 | * to be actually valid, or if the urb is signaling |
| 281 | * a problem. |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 282 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 283 | if (urb->actual_length < entry->queue->desc_size || urb->status) |
| 284 | goto skip_entry; |
| 285 | |
| 286 | /* |
| 287 | * Fill in skb descriptor |
| 288 | */ |
| 289 | skbdesc = get_skb_frame_desc(entry->skb); |
| 290 | memset(skbdesc, 0, sizeof(*skbdesc)); |
| 291 | skbdesc->entry = entry; |
Gertjan van Wingerde | a26cbc6 | 2008-06-06 22:54:28 +0200 | [diff] [blame] | 292 | skbdesc->desc = rxd; |
| 293 | skbdesc->desc_len = entry->queue->desc_size; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 294 | |
| 295 | memset(&rxdesc, 0, sizeof(rxdesc)); |
| 296 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); |
| 297 | |
| 298 | /* |
| 299 | * Allocate a new sk buffer to replace the current one. |
| 300 | * If allocation fails, we should drop the current frame |
| 301 | * so we can recycle the existing sk buffer for the new frame. |
| 302 | */ |
Gertjan van Wingerde | 30caa6e | 2008-06-16 19:56:08 +0200 | [diff] [blame^] | 303 | skb = rt2x00queue_alloc_skb(entry->queue); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 304 | if (!skb) |
| 305 | goto skip_entry; |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 306 | |
| 307 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 308 | * Send the frame to rt2x00lib for further processing. |
| 309 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 310 | rt2x00lib_rxdone(entry, &rxdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 311 | |
| 312 | /* |
| 313 | * Replace current entry's skb with the newly allocated one, |
| 314 | * and reinitialize the urb. |
| 315 | */ |
| 316 | entry->skb = skb; |
| 317 | urb->transfer_buffer = entry->skb->data; |
| 318 | urb->transfer_buffer_length = entry->skb->len; |
| 319 | |
| 320 | skip_entry: |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 321 | if (test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags)) { |
| 322 | __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 323 | usb_submit_urb(urb, GFP_ATOMIC); |
| 324 | } |
| 325 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 326 | rt2x00queue_index_inc(entry->queue, Q_INDEX); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Radio handlers |
| 331 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 332 | void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev) |
| 333 | { |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 334 | struct queue_entry_priv_usb *entry_priv; |
| 335 | struct queue_entry_priv_usb_bcn *bcn_priv; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 336 | unsigned int i; |
| 337 | |
Ivo van Doorn | bd394a7 | 2008-04-21 19:01:58 +0200 | [diff] [blame] | 338 | rt2x00usb_vendor_request_sw(rt2x00dev, USB_RX_CONTROL, 0, 0, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 339 | REGISTER_TIMEOUT); |
| 340 | |
| 341 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 342 | * Cancel all queues. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 343 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 344 | for (i = 0; i < rt2x00dev->rx->limit; i++) { |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 345 | entry_priv = rt2x00dev->rx->entries[i].priv_data; |
| 346 | usb_kill_urb(entry_priv->urb); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 347 | } |
| 348 | |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 349 | /* |
Ivo van Doorn | edfa78b | 2008-06-03 20:29:50 +0200 | [diff] [blame] | 350 | * Kill guardian urb (if required by driver). |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 351 | */ |
Ivo van Doorn | edfa78b | 2008-06-03 20:29:50 +0200 | [diff] [blame] | 352 | if (!test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)) |
| 353 | return; |
| 354 | |
Ivo van Doorn | 330e3f9 | 2008-02-10 22:52:36 +0100 | [diff] [blame] | 355 | for (i = 0; i < rt2x00dev->bcn->limit; i++) { |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 356 | bcn_priv = rt2x00dev->bcn->entries[i].priv_data; |
| 357 | if (bcn_priv->guardian_urb) |
| 358 | usb_kill_urb(bcn_priv->guardian_urb); |
Ivo van Doorn | 330e3f9 | 2008-02-10 22:52:36 +0100 | [diff] [blame] | 359 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 360 | } |
| 361 | EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio); |
| 362 | |
| 363 | /* |
| 364 | * Device initialization handlers. |
| 365 | */ |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 366 | void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 367 | struct queue_entry *entry) |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 368 | { |
Gertjan van Wingerde | 14a3bf8 | 2008-06-16 19:55:43 +0200 | [diff] [blame] | 369 | struct usb_device *usb_dev = |
| 370 | interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 371 | struct queue_entry_priv_usb *entry_priv = entry->priv_data; |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 372 | |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 373 | usb_fill_bulk_urb(entry_priv->urb, usb_dev, |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 374 | usb_rcvbulkpipe(usb_dev, 1), |
| 375 | entry->skb->data, entry->skb->len, |
| 376 | rt2x00usb_interrupt_rxdone, entry); |
| 377 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 378 | __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 379 | usb_submit_urb(entry_priv->urb, GFP_ATOMIC); |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 380 | } |
| 381 | EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry); |
| 382 | |
| 383 | void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 384 | struct queue_entry *entry) |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 385 | { |
| 386 | entry->flags = 0; |
| 387 | } |
| 388 | EXPORT_SYMBOL_GPL(rt2x00usb_init_txentry); |
| 389 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 390 | static int rt2x00usb_alloc_urb(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 391 | struct data_queue *queue) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 392 | { |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 393 | struct queue_entry_priv_usb *entry_priv; |
| 394 | struct queue_entry_priv_usb_bcn *bcn_priv; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 395 | unsigned int i; |
| 396 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 397 | for (i = 0; i < queue->limit; i++) { |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 398 | entry_priv = queue->entries[i].priv_data; |
| 399 | entry_priv->urb = usb_alloc_urb(0, GFP_KERNEL); |
| 400 | if (!entry_priv->urb) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 401 | return -ENOMEM; |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 402 | } |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 403 | |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 404 | /* |
| 405 | * If this is not the beacon queue or |
| 406 | * no guardian byte was required for the beacon, |
| 407 | * then we are done. |
| 408 | */ |
| 409 | if (rt2x00dev->bcn != queue || |
| 410 | !test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)) |
| 411 | return 0; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 412 | |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 413 | for (i = 0; i < queue->limit; i++) { |
| 414 | bcn_priv = queue->entries[i].priv_data; |
| 415 | bcn_priv->guardian_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 416 | if (!bcn_priv->guardian_urb) |
| 417 | return -ENOMEM; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | static void rt2x00usb_free_urb(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 424 | struct data_queue *queue) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 425 | { |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 426 | struct queue_entry_priv_usb *entry_priv; |
| 427 | struct queue_entry_priv_usb_bcn *bcn_priv; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 428 | unsigned int i; |
| 429 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 430 | if (!queue->entries) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 431 | return; |
| 432 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 433 | for (i = 0; i < queue->limit; i++) { |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 434 | entry_priv = queue->entries[i].priv_data; |
| 435 | usb_kill_urb(entry_priv->urb); |
| 436 | usb_free_urb(entry_priv->urb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 437 | } |
Ivo van Doorn | b8be63f | 2008-05-10 13:46:03 +0200 | [diff] [blame] | 438 | |
| 439 | /* |
| 440 | * If this is not the beacon queue or |
| 441 | * no guardian byte was required for the beacon, |
| 442 | * then we are done. |
| 443 | */ |
| 444 | if (rt2x00dev->bcn != queue || |
| 445 | !test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)) |
| 446 | return; |
| 447 | |
| 448 | for (i = 0; i < queue->limit; i++) { |
| 449 | bcn_priv = queue->entries[i].priv_data; |
| 450 | usb_kill_urb(bcn_priv->guardian_urb); |
| 451 | usb_free_urb(bcn_priv->guardian_urb); |
| 452 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev) |
| 456 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 457 | struct data_queue *queue; |
Gertjan van Wingerde | 30caa6e | 2008-06-16 19:56:08 +0200 | [diff] [blame^] | 458 | int status; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 459 | |
| 460 | /* |
| 461 | * Allocate DMA |
| 462 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 463 | queue_for_each(rt2x00dev, queue) { |
| 464 | status = rt2x00usb_alloc_urb(rt2x00dev, queue); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 465 | if (status) |
| 466 | goto exit; |
| 467 | } |
| 468 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 469 | return 0; |
| 470 | |
| 471 | exit: |
| 472 | rt2x00usb_uninitialize(rt2x00dev); |
| 473 | |
| 474 | return status; |
| 475 | } |
| 476 | EXPORT_SYMBOL_GPL(rt2x00usb_initialize); |
| 477 | |
| 478 | void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev) |
| 479 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 480 | struct data_queue *queue; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 481 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 482 | queue_for_each(rt2x00dev, queue) |
| 483 | rt2x00usb_free_urb(rt2x00dev, queue); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 484 | } |
| 485 | EXPORT_SYMBOL_GPL(rt2x00usb_uninitialize); |
| 486 | |
| 487 | /* |
| 488 | * USB driver handlers. |
| 489 | */ |
| 490 | static void rt2x00usb_free_reg(struct rt2x00_dev *rt2x00dev) |
| 491 | { |
| 492 | kfree(rt2x00dev->rf); |
| 493 | rt2x00dev->rf = NULL; |
| 494 | |
| 495 | kfree(rt2x00dev->eeprom); |
| 496 | rt2x00dev->eeprom = NULL; |
| 497 | |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 498 | kfree(rt2x00dev->csr.cache); |
| 499 | rt2x00dev->csr.cache = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | static int rt2x00usb_alloc_reg(struct rt2x00_dev *rt2x00dev) |
| 503 | { |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 504 | rt2x00dev->csr.cache = kzalloc(CSR_CACHE_SIZE, GFP_KERNEL); |
| 505 | if (!rt2x00dev->csr.cache) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 506 | goto exit; |
| 507 | |
| 508 | rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL); |
| 509 | if (!rt2x00dev->eeprom) |
| 510 | goto exit; |
| 511 | |
| 512 | rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL); |
| 513 | if (!rt2x00dev->rf) |
| 514 | goto exit; |
| 515 | |
| 516 | return 0; |
| 517 | |
| 518 | exit: |
| 519 | ERROR_PROBE("Failed to allocate registers.\n"); |
| 520 | |
| 521 | rt2x00usb_free_reg(rt2x00dev); |
| 522 | |
| 523 | return -ENOMEM; |
| 524 | } |
| 525 | |
| 526 | int rt2x00usb_probe(struct usb_interface *usb_intf, |
| 527 | const struct usb_device_id *id) |
| 528 | { |
| 529 | struct usb_device *usb_dev = interface_to_usbdev(usb_intf); |
| 530 | struct rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_info; |
| 531 | struct ieee80211_hw *hw; |
| 532 | struct rt2x00_dev *rt2x00dev; |
| 533 | int retval; |
| 534 | |
| 535 | usb_dev = usb_get_dev(usb_dev); |
| 536 | |
| 537 | hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw); |
| 538 | if (!hw) { |
| 539 | ERROR_PROBE("Failed to allocate hardware.\n"); |
| 540 | retval = -ENOMEM; |
| 541 | goto exit_put_device; |
| 542 | } |
| 543 | |
| 544 | usb_set_intfdata(usb_intf, hw); |
| 545 | |
| 546 | rt2x00dev = hw->priv; |
Gertjan van Wingerde | 14a3bf8 | 2008-06-16 19:55:43 +0200 | [diff] [blame] | 547 | rt2x00dev->dev = &usb_intf->dev; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 548 | rt2x00dev->ops = ops; |
| 549 | rt2x00dev->hw = hw; |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 550 | mutex_init(&rt2x00dev->usb_cache_mutex); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 551 | |
Ivo van Doorn | b242e89 | 2007-11-15 23:41:31 +0100 | [diff] [blame] | 552 | rt2x00dev->usb_maxpacket = |
| 553 | usb_maxpacket(usb_dev, usb_sndbulkpipe(usb_dev, 1), 1); |
| 554 | if (!rt2x00dev->usb_maxpacket) |
| 555 | rt2x00dev->usb_maxpacket = 1; |
| 556 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 557 | retval = rt2x00usb_alloc_reg(rt2x00dev); |
| 558 | if (retval) |
| 559 | goto exit_free_device; |
| 560 | |
| 561 | retval = rt2x00lib_probe_dev(rt2x00dev); |
| 562 | if (retval) |
| 563 | goto exit_free_reg; |
| 564 | |
| 565 | return 0; |
| 566 | |
| 567 | exit_free_reg: |
| 568 | rt2x00usb_free_reg(rt2x00dev); |
| 569 | |
| 570 | exit_free_device: |
| 571 | ieee80211_free_hw(hw); |
| 572 | |
| 573 | exit_put_device: |
| 574 | usb_put_dev(usb_dev); |
| 575 | |
| 576 | usb_set_intfdata(usb_intf, NULL); |
| 577 | |
| 578 | return retval; |
| 579 | } |
| 580 | EXPORT_SYMBOL_GPL(rt2x00usb_probe); |
| 581 | |
| 582 | void rt2x00usb_disconnect(struct usb_interface *usb_intf) |
| 583 | { |
| 584 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); |
| 585 | struct rt2x00_dev *rt2x00dev = hw->priv; |
| 586 | |
| 587 | /* |
| 588 | * Free all allocated data. |
| 589 | */ |
| 590 | rt2x00lib_remove_dev(rt2x00dev); |
| 591 | rt2x00usb_free_reg(rt2x00dev); |
| 592 | ieee80211_free_hw(hw); |
| 593 | |
| 594 | /* |
| 595 | * Free the USB device data. |
| 596 | */ |
| 597 | usb_set_intfdata(usb_intf, NULL); |
| 598 | usb_put_dev(interface_to_usbdev(usb_intf)); |
| 599 | } |
| 600 | EXPORT_SYMBOL_GPL(rt2x00usb_disconnect); |
| 601 | |
| 602 | #ifdef CONFIG_PM |
| 603 | int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state) |
| 604 | { |
| 605 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); |
| 606 | struct rt2x00_dev *rt2x00dev = hw->priv; |
| 607 | int retval; |
| 608 | |
| 609 | retval = rt2x00lib_suspend(rt2x00dev, state); |
| 610 | if (retval) |
| 611 | return retval; |
| 612 | |
| 613 | rt2x00usb_free_reg(rt2x00dev); |
| 614 | |
| 615 | /* |
| 616 | * Decrease usbdev refcount. |
| 617 | */ |
| 618 | usb_put_dev(interface_to_usbdev(usb_intf)); |
| 619 | |
| 620 | return 0; |
| 621 | } |
| 622 | EXPORT_SYMBOL_GPL(rt2x00usb_suspend); |
| 623 | |
| 624 | int rt2x00usb_resume(struct usb_interface *usb_intf) |
| 625 | { |
| 626 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); |
| 627 | struct rt2x00_dev *rt2x00dev = hw->priv; |
| 628 | int retval; |
| 629 | |
| 630 | usb_get_dev(interface_to_usbdev(usb_intf)); |
| 631 | |
| 632 | retval = rt2x00usb_alloc_reg(rt2x00dev); |
| 633 | if (retval) |
| 634 | return retval; |
| 635 | |
| 636 | retval = rt2x00lib_resume(rt2x00dev); |
| 637 | if (retval) |
| 638 | goto exit_free_reg; |
| 639 | |
| 640 | return 0; |
| 641 | |
| 642 | exit_free_reg: |
| 643 | rt2x00usb_free_reg(rt2x00dev); |
| 644 | |
| 645 | return retval; |
| 646 | } |
| 647 | EXPORT_SYMBOL_GPL(rt2x00usb_resume); |
| 648 | #endif /* CONFIG_PM */ |
| 649 | |
| 650 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 651 | * rt2x00usb module information. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 652 | */ |
| 653 | MODULE_AUTHOR(DRV_PROJECT); |
| 654 | MODULE_VERSION(DRV_VERSION); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 655 | MODULE_DESCRIPTION("rt2x00 usb library"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 656 | MODULE_LICENSE("GPL"); |