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 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 43 | struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 44 | int status; |
| 45 | unsigned int i; |
| 46 | unsigned int pipe = |
| 47 | (requesttype == USB_VENDOR_REQUEST_IN) ? |
| 48 | usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0); |
| 49 | |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 50 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 51 | for (i = 0; i < REGISTER_BUSY_COUNT; i++) { |
| 52 | status = usb_control_msg(usb_dev, pipe, request, requesttype, |
| 53 | value, offset, buffer, buffer_length, |
| 54 | timeout); |
| 55 | if (status >= 0) |
| 56 | return 0; |
| 57 | |
| 58 | /* |
Ivo van Doorn | e913655 | 2007-09-25 20:54:20 +0200 | [diff] [blame] | 59 | * Check for errors |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 60 | * -ENODEV: Device has disappeared, no point continuing. |
Ivo van Doorn | e913655 | 2007-09-25 20:54:20 +0200 | [diff] [blame] | 61 | * All other errors: Try again. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 62 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 63 | else if (status == -ENODEV) |
| 64 | break; |
| 65 | } |
| 66 | |
| 67 | ERROR(rt2x00dev, |
| 68 | "Vendor Request 0x%02x failed for offset 0x%04x with error %d.\n", |
| 69 | request, offset, status); |
| 70 | |
| 71 | return status; |
| 72 | } |
| 73 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request); |
| 74 | |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 75 | int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev, |
| 76 | const u8 request, const u8 requesttype, |
| 77 | const u16 offset, void *buffer, |
| 78 | const u16 buffer_length, const int timeout) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 79 | { |
| 80 | int status; |
| 81 | |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 82 | BUG_ON(!mutex_is_locked(&rt2x00dev->usb_cache_mutex)); |
| 83 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 84 | /* |
| 85 | * Check for Cache availability. |
| 86 | */ |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 87 | if (unlikely(!rt2x00dev->csr.cache || buffer_length > CSR_CACHE_SIZE)) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 88 | ERROR(rt2x00dev, "CSR cache not available.\n"); |
| 89 | return -ENOMEM; |
| 90 | } |
| 91 | |
| 92 | if (requesttype == USB_VENDOR_REQUEST_OUT) |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 93 | memcpy(rt2x00dev->csr.cache, buffer, buffer_length); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 94 | |
| 95 | status = rt2x00usb_vendor_request(rt2x00dev, request, requesttype, |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 96 | offset, 0, rt2x00dev->csr.cache, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 97 | buffer_length, timeout); |
| 98 | |
| 99 | if (!status && requesttype == USB_VENDOR_REQUEST_IN) |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 100 | memcpy(buffer, rt2x00dev->csr.cache, buffer_length); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 101 | |
| 102 | return status; |
| 103 | } |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 104 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_req_buff_lock); |
| 105 | |
| 106 | int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev, |
| 107 | const u8 request, const u8 requesttype, |
| 108 | const u16 offset, void *buffer, |
| 109 | const u16 buffer_length, const int timeout) |
| 110 | { |
| 111 | int status; |
| 112 | |
| 113 | mutex_lock(&rt2x00dev->usb_cache_mutex); |
| 114 | |
| 115 | status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request, |
| 116 | requesttype, offset, buffer, |
| 117 | buffer_length, timeout); |
| 118 | |
| 119 | mutex_unlock(&rt2x00dev->usb_cache_mutex); |
| 120 | |
| 121 | return status; |
| 122 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 123 | EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff); |
| 124 | |
| 125 | /* |
| 126 | * TX data handlers. |
| 127 | */ |
| 128 | static void rt2x00usb_interrupt_txdone(struct urb *urb) |
| 129 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 130 | struct queue_entry *entry = (struct queue_entry *)urb->context; |
| 131 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
| 132 | struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data; |
| 133 | struct txdone_entry_desc txdesc; |
Ivo van Doorn | 4bd7c45 | 2008-01-24 00:48:03 -0800 | [diff] [blame] | 134 | __le32 *txd = (__le32 *)entry->skb->data; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 135 | u32 word; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 136 | |
| 137 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 138 | !__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 139 | return; |
| 140 | |
| 141 | rt2x00_desc_read(txd, 0, &word); |
| 142 | |
| 143 | /* |
| 144 | * Remove the descriptor data from the buffer. |
| 145 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 146 | skb_pull(entry->skb, entry->queue->desc_size); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 147 | |
| 148 | /* |
| 149 | * Obtain the status about this packet. |
Ivo van Doorn | fb55f4d | 2008-05-10 13:42:06 +0200 | [diff] [blame] | 150 | * Note that when the status is 0 it does not mean the |
| 151 | * frame was send out correctly. It only means the frame |
| 152 | * was succesfully pushed to the hardware, we have no |
| 153 | * way to determine the transmission status right now. |
| 154 | * (Only indirectly by looking at the failed TX counters |
| 155 | * in the register). |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 156 | */ |
Ivo van Doorn | fb55f4d | 2008-05-10 13:42:06 +0200 | [diff] [blame] | 157 | if (!urb->status) |
| 158 | __set_bit(TXDONE_UNKNOWN, &txdesc.flags); |
| 159 | else |
| 160 | __set_bit(TXDONE_FAILURE, &txdesc.flags); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 161 | txdesc.retry = 0; |
| 162 | txdesc.control = &priv_tx->control; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 163 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 164 | rt2x00lib_txdone(entry, &txdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 165 | |
| 166 | /* |
| 167 | * Make this entry available for reuse. |
| 168 | */ |
| 169 | entry->flags = 0; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 170 | rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 171 | |
| 172 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 173 | * If the data queue was full before the txdone handler |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 174 | * we must make sure the packet queue in the mac80211 stack |
| 175 | * is reenabled when the txdone handler has finished. |
| 176 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 177 | if (!rt2x00queue_full(entry->queue)) |
| 178 | ieee80211_wake_queue(rt2x00dev->hw, priv_tx->control.queue); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 182 | struct data_queue *queue, struct sk_buff *skb, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 183 | struct ieee80211_tx_control *control) |
| 184 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 185 | struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev); |
| 186 | struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX); |
| 187 | struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data; |
| 188 | struct skb_frame_desc *skbdesc; |
Ivo van Doorn | dd9fa2d | 2007-10-06 14:15:46 +0200 | [diff] [blame] | 189 | u32 length; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 190 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 191 | if (rt2x00queue_full(queue)) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 192 | return -EINVAL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 193 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 194 | if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 195 | ERROR(rt2x00dev, |
| 196 | "Arrived at non-free entry in the non-full queue %d.\n" |
| 197 | "Please file bug report to %s.\n", |
Ivo van Doorn | e58c6ac | 2008-04-21 19:00:47 +0200 | [diff] [blame] | 198 | entry->queue->qid, DRV_PROJECT); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 199 | return -EINVAL; |
| 200 | } |
| 201 | |
| 202 | /* |
| 203 | * Add the descriptor in front of the skb. |
| 204 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 205 | skb_push(skb, queue->desc_size); |
| 206 | memset(skb->data, 0, queue->desc_size); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 207 | |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 208 | /* |
| 209 | * Fill in skb descriptor |
| 210 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 211 | skbdesc = get_skb_frame_desc(skb); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 212 | skbdesc->data = skb->data + queue->desc_size; |
Ivo van Doorn | 647d0ca | 2008-02-10 22:51:21 +0100 | [diff] [blame] | 213 | skbdesc->data_len = skb->len - queue->desc_size; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 214 | skbdesc->desc = skb->data; |
| 215 | skbdesc->desc_len = queue->desc_size; |
| 216 | skbdesc->entry = entry; |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 217 | |
Mattias Nissler | 92f5ac6 | 2008-03-09 22:38:54 +0100 | [diff] [blame] | 218 | memcpy(&priv_tx->control, control, sizeof(priv_tx->control)); |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 219 | rt2x00lib_write_tx_desc(rt2x00dev, skb, control); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 220 | |
| 221 | /* |
Ivo van Doorn | dd9fa2d | 2007-10-06 14:15:46 +0200 | [diff] [blame] | 222 | * USB devices cannot blindly pass the skb->len as the |
| 223 | * length of the data to usb_fill_bulk_urb. Pass the skb |
| 224 | * to the driver to determine what the length should be. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 225 | */ |
Ivo van Doorn | b242e89 | 2007-11-15 23:41:31 +0100 | [diff] [blame] | 226 | length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 227 | |
Ivo van Doorn | dd9fa2d | 2007-10-06 14:15:46 +0200 | [diff] [blame] | 228 | /* |
| 229 | * Initialize URB and send the frame to the device. |
| 230 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 231 | __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
| 232 | usb_fill_bulk_urb(priv_tx->urb, usb_dev, usb_sndbulkpipe(usb_dev, 1), |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 233 | skb->data, length, rt2x00usb_interrupt_txdone, entry); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 234 | usb_submit_urb(priv_tx->urb, GFP_ATOMIC); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 235 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 236 | rt2x00queue_index_inc(queue, Q_INDEX); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 237 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 238 | return 0; |
| 239 | } |
| 240 | EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data); |
| 241 | |
| 242 | /* |
| 243 | * RX data handlers. |
| 244 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 245 | static struct sk_buff* rt2x00usb_alloc_rxskb(struct data_queue *queue) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 246 | { |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 247 | struct sk_buff *skb; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 248 | unsigned int frame_size; |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 249 | unsigned int reserved_size; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 250 | |
| 251 | /* |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 252 | * The frame size includes descriptor size, because the |
| 253 | * hardware directly receive the frame into the skbuffer. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 254 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 255 | frame_size = queue->data_size + queue->desc_size; |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 256 | |
| 257 | /* |
| 258 | * For the allocation we should keep a few things in mind: |
| 259 | * 1) 4byte alignment of 802.11 payload |
| 260 | * |
| 261 | * For (1) we need at most 4 bytes to guarentee the correct |
| 262 | * alignment. We are going to optimize the fact that the chance |
| 263 | * that the 802.11 header_size % 4 == 2 is much bigger then |
| 264 | * anything else. However since we need to move the frame up |
| 265 | * to 3 bytes to the front, which means we need to preallocate |
| 266 | * 6 bytes. |
| 267 | */ |
| 268 | reserved_size = 6; |
| 269 | |
| 270 | /* |
| 271 | * Allocate skbuffer. |
| 272 | */ |
| 273 | skb = dev_alloc_skb(frame_size + reserved_size); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 274 | if (!skb) |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 275 | return NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 276 | |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 277 | skb_reserve(skb, reserved_size); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 278 | skb_put(skb, frame_size); |
| 279 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 280 | return skb; |
| 281 | } |
Ivo van Doorn | c5d0dc5 | 2008-01-06 23:40:27 +0100 | [diff] [blame] | 282 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 283 | static void rt2x00usb_interrupt_rxdone(struct urb *urb) |
| 284 | { |
| 285 | struct queue_entry *entry = (struct queue_entry *)urb->context; |
| 286 | struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; |
| 287 | struct sk_buff *skb; |
| 288 | struct skb_frame_desc *skbdesc; |
| 289 | struct rxdone_entry_desc rxdesc; |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 290 | unsigned int header_size; |
| 291 | unsigned int align; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 292 | |
| 293 | if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || |
| 294 | !test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) |
| 295 | return; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 296 | |
| 297 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 298 | * Check if the received data is simply too small |
| 299 | * to be actually valid, or if the urb is signaling |
| 300 | * a problem. |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 301 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 302 | if (urb->actual_length < entry->queue->desc_size || urb->status) |
| 303 | goto skip_entry; |
| 304 | |
| 305 | /* |
| 306 | * Fill in skb descriptor |
| 307 | */ |
| 308 | skbdesc = get_skb_frame_desc(entry->skb); |
| 309 | memset(skbdesc, 0, sizeof(*skbdesc)); |
| 310 | skbdesc->entry = entry; |
| 311 | |
| 312 | memset(&rxdesc, 0, sizeof(rxdesc)); |
| 313 | rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); |
| 314 | |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 315 | header_size = ieee80211_get_hdrlen_from_skb(entry->skb); |
| 316 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 317 | /* |
Ivo van Doorn | f855c10 | 2008-03-09 22:38:18 +0100 | [diff] [blame] | 318 | * The data behind the ieee80211 header must be |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 319 | * aligned on a 4 byte boundary. We already reserved |
| 320 | * 2 bytes for header_size % 4 == 2 optimization. |
| 321 | * To determine the number of bytes which the data |
| 322 | * should be moved to the left, we must add these |
| 323 | * 2 bytes to the header_size. |
Ivo van Doorn | f855c10 | 2008-03-09 22:38:18 +0100 | [diff] [blame] | 324 | */ |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 325 | align = (header_size + 2) % 4; |
| 326 | |
| 327 | if (align) { |
| 328 | skb_push(entry->skb, align); |
| 329 | /* Move entire frame in 1 command */ |
| 330 | memmove(entry->skb->data, entry->skb->data + align, |
| 331 | rxdesc.size); |
Ivo van Doorn | f855c10 | 2008-03-09 22:38:18 +0100 | [diff] [blame] | 332 | } |
| 333 | |
Ivo van Doorn | 70a9610 | 2008-05-10 13:43:38 +0200 | [diff] [blame^] | 334 | /* Update data pointers, trim buffer to correct size */ |
| 335 | skbdesc->data = entry->skb->data; |
| 336 | skb_trim(entry->skb, rxdesc.size); |
| 337 | |
Ivo van Doorn | f855c10 | 2008-03-09 22:38:18 +0100 | [diff] [blame] | 338 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 339 | * Allocate a new sk buffer to replace the current one. |
| 340 | * If allocation fails, we should drop the current frame |
| 341 | * so we can recycle the existing sk buffer for the new frame. |
| 342 | */ |
| 343 | skb = rt2x00usb_alloc_rxskb(entry->queue); |
| 344 | if (!skb) |
| 345 | goto skip_entry; |
Ivo van Doorn | 08992f7 | 2008-01-24 01:56:25 -0800 | [diff] [blame] | 346 | |
| 347 | /* |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 348 | * Send the frame to rt2x00lib for further processing. |
| 349 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 350 | rt2x00lib_rxdone(entry, &rxdesc); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 351 | |
| 352 | /* |
| 353 | * Replace current entry's skb with the newly allocated one, |
| 354 | * and reinitialize the urb. |
| 355 | */ |
| 356 | entry->skb = skb; |
| 357 | urb->transfer_buffer = entry->skb->data; |
| 358 | urb->transfer_buffer_length = entry->skb->len; |
| 359 | |
| 360 | skip_entry: |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 361 | if (test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags)) { |
| 362 | __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 363 | usb_submit_urb(urb, GFP_ATOMIC); |
| 364 | } |
| 365 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 366 | rt2x00queue_index_inc(entry->queue, Q_INDEX); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | /* |
| 370 | * Radio handlers |
| 371 | */ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 372 | void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev) |
| 373 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 374 | struct queue_entry_priv_usb_rx *priv_rx; |
| 375 | struct queue_entry_priv_usb_tx *priv_tx; |
Ivo van Doorn | 330e3f9 | 2008-02-10 22:52:36 +0100 | [diff] [blame] | 376 | struct queue_entry_priv_usb_bcn *priv_bcn; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 377 | struct data_queue *queue; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 378 | unsigned int i; |
| 379 | |
Ivo van Doorn | bd394a7 | 2008-04-21 19:01:58 +0200 | [diff] [blame] | 380 | rt2x00usb_vendor_request_sw(rt2x00dev, USB_RX_CONTROL, 0, 0, |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 381 | REGISTER_TIMEOUT); |
| 382 | |
| 383 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 384 | * Cancel all queues. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 385 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 386 | for (i = 0; i < rt2x00dev->rx->limit; i++) { |
| 387 | priv_rx = rt2x00dev->rx->entries[i].priv_data; |
| 388 | usb_kill_urb(priv_rx->urb); |
| 389 | } |
| 390 | |
Ivo van Doorn | 330e3f9 | 2008-02-10 22:52:36 +0100 | [diff] [blame] | 391 | tx_queue_for_each(rt2x00dev, queue) { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 392 | for (i = 0; i < queue->limit; i++) { |
| 393 | priv_tx = queue->entries[i].priv_data; |
| 394 | usb_kill_urb(priv_tx->urb); |
| 395 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 396 | } |
Ivo van Doorn | 330e3f9 | 2008-02-10 22:52:36 +0100 | [diff] [blame] | 397 | |
| 398 | for (i = 0; i < rt2x00dev->bcn->limit; i++) { |
| 399 | priv_bcn = rt2x00dev->bcn->entries[i].priv_data; |
| 400 | usb_kill_urb(priv_bcn->urb); |
| 401 | |
| 402 | if (priv_bcn->guardian_urb) |
| 403 | usb_kill_urb(priv_bcn->guardian_urb); |
| 404 | } |
| 405 | |
| 406 | if (!test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) |
| 407 | return; |
| 408 | |
| 409 | for (i = 0; i < rt2x00dev->bcn[1].limit; i++) { |
| 410 | priv_tx = rt2x00dev->bcn[1].entries[i].priv_data; |
| 411 | usb_kill_urb(priv_tx->urb); |
| 412 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 413 | } |
| 414 | EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio); |
| 415 | |
| 416 | /* |
| 417 | * Device initialization handlers. |
| 418 | */ |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 419 | void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 420 | struct queue_entry *entry) |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 421 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 422 | struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev); |
| 423 | struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data; |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 424 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 425 | usb_fill_bulk_urb(priv_rx->urb, usb_dev, |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 426 | usb_rcvbulkpipe(usb_dev, 1), |
| 427 | entry->skb->data, entry->skb->len, |
| 428 | rt2x00usb_interrupt_rxdone, entry); |
| 429 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 430 | __set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); |
| 431 | usb_submit_urb(priv_rx->urb, GFP_ATOMIC); |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 432 | } |
| 433 | EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry); |
| 434 | |
| 435 | void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 436 | struct queue_entry *entry) |
Ivo van Doorn | 837e7f2 | 2008-01-06 23:41:45 +0100 | [diff] [blame] | 437 | { |
| 438 | entry->flags = 0; |
| 439 | } |
| 440 | EXPORT_SYMBOL_GPL(rt2x00usb_init_txentry); |
| 441 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 442 | static int rt2x00usb_alloc_urb(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 443 | struct data_queue *queue) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 444 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 445 | struct queue_entry_priv_usb_rx *priv_rx; |
| 446 | struct queue_entry_priv_usb_tx *priv_tx; |
| 447 | struct queue_entry_priv_usb_bcn *priv_bcn; |
| 448 | struct urb *urb; |
| 449 | unsigned int guardian = |
| 450 | test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 451 | unsigned int i; |
| 452 | |
| 453 | /* |
| 454 | * Allocate the URB's |
| 455 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 456 | for (i = 0; i < queue->limit; i++) { |
| 457 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 458 | if (!urb) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 459 | return -ENOMEM; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 460 | |
| 461 | if (queue->qid == QID_RX) { |
| 462 | priv_rx = queue->entries[i].priv_data; |
| 463 | priv_rx->urb = urb; |
| 464 | } else if (queue->qid == QID_MGMT && guardian) { |
| 465 | priv_bcn = queue->entries[i].priv_data; |
| 466 | priv_bcn->urb = urb; |
| 467 | |
| 468 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 469 | if (!urb) |
| 470 | return -ENOMEM; |
| 471 | |
| 472 | priv_bcn->guardian_urb = urb; |
| 473 | } else { |
| 474 | priv_tx = queue->entries[i].priv_data; |
| 475 | priv_tx->urb = urb; |
| 476 | } |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | return 0; |
| 480 | } |
| 481 | |
| 482 | static void rt2x00usb_free_urb(struct rt2x00_dev *rt2x00dev, |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 483 | struct data_queue *queue) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 484 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 485 | struct queue_entry_priv_usb_rx *priv_rx; |
| 486 | struct queue_entry_priv_usb_tx *priv_tx; |
| 487 | struct queue_entry_priv_usb_bcn *priv_bcn; |
| 488 | struct urb *urb; |
| 489 | unsigned int guardian = |
| 490 | test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 491 | unsigned int i; |
| 492 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 493 | if (!queue->entries) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 494 | return; |
| 495 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 496 | for (i = 0; i < queue->limit; i++) { |
| 497 | if (queue->qid == QID_RX) { |
| 498 | priv_rx = queue->entries[i].priv_data; |
| 499 | urb = priv_rx->urb; |
| 500 | } else if (queue->qid == QID_MGMT && guardian) { |
| 501 | priv_bcn = queue->entries[i].priv_data; |
| 502 | |
| 503 | usb_kill_urb(priv_bcn->guardian_urb); |
| 504 | usb_free_urb(priv_bcn->guardian_urb); |
| 505 | |
| 506 | urb = priv_bcn->urb; |
| 507 | } else { |
| 508 | priv_tx = queue->entries[i].priv_data; |
| 509 | urb = priv_tx->urb; |
| 510 | } |
| 511 | |
| 512 | usb_kill_urb(urb); |
| 513 | usb_free_urb(urb); |
| 514 | if (queue->entries[i].skb) |
| 515 | kfree_skb(queue->entries[i].skb); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 516 | } |
| 517 | } |
| 518 | |
| 519 | int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev) |
| 520 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 521 | struct data_queue *queue; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 522 | struct sk_buff *skb; |
| 523 | unsigned int entry_size; |
| 524 | unsigned int i; |
Andrew Morton | 7373800 | 2008-01-16 02:58:24 -0800 | [diff] [blame] | 525 | int uninitialized_var(status); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 526 | |
| 527 | /* |
| 528 | * Allocate DMA |
| 529 | */ |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 530 | queue_for_each(rt2x00dev, queue) { |
| 531 | status = rt2x00usb_alloc_urb(rt2x00dev, queue); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 532 | if (status) |
| 533 | goto exit; |
| 534 | } |
| 535 | |
| 536 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 537 | * For the RX queue, skb's should be allocated. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 538 | */ |
| 539 | entry_size = rt2x00dev->rx->data_size + rt2x00dev->rx->desc_size; |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 540 | for (i = 0; i < rt2x00dev->rx->limit; i++) { |
| 541 | skb = rt2x00usb_alloc_rxskb(rt2x00dev->rx); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 542 | if (!skb) |
| 543 | goto exit; |
| 544 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 545 | rt2x00dev->rx->entries[i].skb = skb; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | return 0; |
| 549 | |
| 550 | exit: |
| 551 | rt2x00usb_uninitialize(rt2x00dev); |
| 552 | |
| 553 | return status; |
| 554 | } |
| 555 | EXPORT_SYMBOL_GPL(rt2x00usb_initialize); |
| 556 | |
| 557 | void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev) |
| 558 | { |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 559 | struct data_queue *queue; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 560 | |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 561 | queue_for_each(rt2x00dev, queue) |
| 562 | rt2x00usb_free_urb(rt2x00dev, queue); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 563 | } |
| 564 | EXPORT_SYMBOL_GPL(rt2x00usb_uninitialize); |
| 565 | |
| 566 | /* |
| 567 | * USB driver handlers. |
| 568 | */ |
| 569 | static void rt2x00usb_free_reg(struct rt2x00_dev *rt2x00dev) |
| 570 | { |
| 571 | kfree(rt2x00dev->rf); |
| 572 | rt2x00dev->rf = NULL; |
| 573 | |
| 574 | kfree(rt2x00dev->eeprom); |
| 575 | rt2x00dev->eeprom = NULL; |
| 576 | |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 577 | kfree(rt2x00dev->csr.cache); |
| 578 | rt2x00dev->csr.cache = NULL; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | static int rt2x00usb_alloc_reg(struct rt2x00_dev *rt2x00dev) |
| 582 | { |
Ivo van Doorn | 2179509 | 2008-02-10 22:49:13 +0100 | [diff] [blame] | 583 | rt2x00dev->csr.cache = kzalloc(CSR_CACHE_SIZE, GFP_KERNEL); |
| 584 | if (!rt2x00dev->csr.cache) |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 585 | goto exit; |
| 586 | |
| 587 | rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL); |
| 588 | if (!rt2x00dev->eeprom) |
| 589 | goto exit; |
| 590 | |
| 591 | rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL); |
| 592 | if (!rt2x00dev->rf) |
| 593 | goto exit; |
| 594 | |
| 595 | return 0; |
| 596 | |
| 597 | exit: |
| 598 | ERROR_PROBE("Failed to allocate registers.\n"); |
| 599 | |
| 600 | rt2x00usb_free_reg(rt2x00dev); |
| 601 | |
| 602 | return -ENOMEM; |
| 603 | } |
| 604 | |
| 605 | int rt2x00usb_probe(struct usb_interface *usb_intf, |
| 606 | const struct usb_device_id *id) |
| 607 | { |
| 608 | struct usb_device *usb_dev = interface_to_usbdev(usb_intf); |
| 609 | struct rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_info; |
| 610 | struct ieee80211_hw *hw; |
| 611 | struct rt2x00_dev *rt2x00dev; |
| 612 | int retval; |
| 613 | |
| 614 | usb_dev = usb_get_dev(usb_dev); |
| 615 | |
| 616 | hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw); |
| 617 | if (!hw) { |
| 618 | ERROR_PROBE("Failed to allocate hardware.\n"); |
| 619 | retval = -ENOMEM; |
| 620 | goto exit_put_device; |
| 621 | } |
| 622 | |
| 623 | usb_set_intfdata(usb_intf, hw); |
| 624 | |
| 625 | rt2x00dev = hw->priv; |
| 626 | rt2x00dev->dev = usb_intf; |
| 627 | rt2x00dev->ops = ops; |
| 628 | rt2x00dev->hw = hw; |
Adam Baker | 3d82346 | 2007-10-27 13:43:29 +0200 | [diff] [blame] | 629 | mutex_init(&rt2x00dev->usb_cache_mutex); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 630 | |
Ivo van Doorn | b242e89 | 2007-11-15 23:41:31 +0100 | [diff] [blame] | 631 | rt2x00dev->usb_maxpacket = |
| 632 | usb_maxpacket(usb_dev, usb_sndbulkpipe(usb_dev, 1), 1); |
| 633 | if (!rt2x00dev->usb_maxpacket) |
| 634 | rt2x00dev->usb_maxpacket = 1; |
| 635 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 636 | retval = rt2x00usb_alloc_reg(rt2x00dev); |
| 637 | if (retval) |
| 638 | goto exit_free_device; |
| 639 | |
| 640 | retval = rt2x00lib_probe_dev(rt2x00dev); |
| 641 | if (retval) |
| 642 | goto exit_free_reg; |
| 643 | |
| 644 | return 0; |
| 645 | |
| 646 | exit_free_reg: |
| 647 | rt2x00usb_free_reg(rt2x00dev); |
| 648 | |
| 649 | exit_free_device: |
| 650 | ieee80211_free_hw(hw); |
| 651 | |
| 652 | exit_put_device: |
| 653 | usb_put_dev(usb_dev); |
| 654 | |
| 655 | usb_set_intfdata(usb_intf, NULL); |
| 656 | |
| 657 | return retval; |
| 658 | } |
| 659 | EXPORT_SYMBOL_GPL(rt2x00usb_probe); |
| 660 | |
| 661 | void rt2x00usb_disconnect(struct usb_interface *usb_intf) |
| 662 | { |
| 663 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); |
| 664 | struct rt2x00_dev *rt2x00dev = hw->priv; |
| 665 | |
| 666 | /* |
| 667 | * Free all allocated data. |
| 668 | */ |
| 669 | rt2x00lib_remove_dev(rt2x00dev); |
| 670 | rt2x00usb_free_reg(rt2x00dev); |
| 671 | ieee80211_free_hw(hw); |
| 672 | |
| 673 | /* |
| 674 | * Free the USB device data. |
| 675 | */ |
| 676 | usb_set_intfdata(usb_intf, NULL); |
| 677 | usb_put_dev(interface_to_usbdev(usb_intf)); |
| 678 | } |
| 679 | EXPORT_SYMBOL_GPL(rt2x00usb_disconnect); |
| 680 | |
| 681 | #ifdef CONFIG_PM |
| 682 | int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state) |
| 683 | { |
| 684 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); |
| 685 | struct rt2x00_dev *rt2x00dev = hw->priv; |
| 686 | int retval; |
| 687 | |
| 688 | retval = rt2x00lib_suspend(rt2x00dev, state); |
| 689 | if (retval) |
| 690 | return retval; |
| 691 | |
| 692 | rt2x00usb_free_reg(rt2x00dev); |
| 693 | |
| 694 | /* |
| 695 | * Decrease usbdev refcount. |
| 696 | */ |
| 697 | usb_put_dev(interface_to_usbdev(usb_intf)); |
| 698 | |
| 699 | return 0; |
| 700 | } |
| 701 | EXPORT_SYMBOL_GPL(rt2x00usb_suspend); |
| 702 | |
| 703 | int rt2x00usb_resume(struct usb_interface *usb_intf) |
| 704 | { |
| 705 | struct ieee80211_hw *hw = usb_get_intfdata(usb_intf); |
| 706 | struct rt2x00_dev *rt2x00dev = hw->priv; |
| 707 | int retval; |
| 708 | |
| 709 | usb_get_dev(interface_to_usbdev(usb_intf)); |
| 710 | |
| 711 | retval = rt2x00usb_alloc_reg(rt2x00dev); |
| 712 | if (retval) |
| 713 | return retval; |
| 714 | |
| 715 | retval = rt2x00lib_resume(rt2x00dev); |
| 716 | if (retval) |
| 717 | goto exit_free_reg; |
| 718 | |
| 719 | return 0; |
| 720 | |
| 721 | exit_free_reg: |
| 722 | rt2x00usb_free_reg(rt2x00dev); |
| 723 | |
| 724 | return retval; |
| 725 | } |
| 726 | EXPORT_SYMBOL_GPL(rt2x00usb_resume); |
| 727 | #endif /* CONFIG_PM */ |
| 728 | |
| 729 | /* |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 730 | * rt2x00usb module information. |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 731 | */ |
| 732 | MODULE_AUTHOR(DRV_PROJECT); |
| 733 | MODULE_VERSION(DRV_VERSION); |
Ivo van Doorn | 181d690 | 2008-02-05 16:42:23 -0500 | [diff] [blame] | 734 | MODULE_DESCRIPTION("rt2x00 usb library"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 735 | MODULE_LICENSE("GPL"); |