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Commit | Line | Data |
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66bb42fd | 1 | /* ZD1211 USB-WLAN driver for Linux |
459c51ad | 2 | * |
66bb42fd DD |
3 | * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de> |
4 | * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org> | |
5 | * Copyright (C) 2006-2007 Michael Wu <flamingice@sourmilk.net> | |
459c51ad | 6 | * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> |
e85d0918 DD |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #include <linux/netdevice.h> | |
24 | #include <linux/etherdevice.h> | |
e85d0918 DD |
25 | #include <linux/usb.h> |
26 | #include <linux/jiffies.h> | |
27 | #include <net/ieee80211_radiotap.h> | |
28 | ||
29 | #include "zd_def.h" | |
30 | #include "zd_chip.h" | |
31 | #include "zd_mac.h" | |
32 | #include "zd_ieee80211.h" | |
e85d0918 | 33 | #include "zd_rf.h" |
e85d0918 | 34 | |
459c51ad DD |
35 | /* This table contains the hardware specific values for the modulation rates. */ |
36 | static const struct ieee80211_rate zd_rates[] = { | |
8318d78a JB |
37 | { .bitrate = 10, |
38 | .hw_value = ZD_CCK_RATE_1M, }, | |
39 | { .bitrate = 20, | |
40 | .hw_value = ZD_CCK_RATE_2M, | |
41 | .hw_value_short = ZD_CCK_RATE_2M | ZD_CCK_PREA_SHORT, | |
42 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
43 | { .bitrate = 55, | |
44 | .hw_value = ZD_CCK_RATE_5_5M, | |
45 | .hw_value_short = ZD_CCK_RATE_5_5M | ZD_CCK_PREA_SHORT, | |
46 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
47 | { .bitrate = 110, | |
48 | .hw_value = ZD_CCK_RATE_11M, | |
49 | .hw_value_short = ZD_CCK_RATE_11M | ZD_CCK_PREA_SHORT, | |
50 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
51 | { .bitrate = 60, | |
52 | .hw_value = ZD_OFDM_RATE_6M, | |
53 | .flags = 0 }, | |
54 | { .bitrate = 90, | |
55 | .hw_value = ZD_OFDM_RATE_9M, | |
56 | .flags = 0 }, | |
57 | { .bitrate = 120, | |
58 | .hw_value = ZD_OFDM_RATE_12M, | |
59 | .flags = 0 }, | |
60 | { .bitrate = 180, | |
61 | .hw_value = ZD_OFDM_RATE_18M, | |
62 | .flags = 0 }, | |
63 | { .bitrate = 240, | |
64 | .hw_value = ZD_OFDM_RATE_24M, | |
65 | .flags = 0 }, | |
66 | { .bitrate = 360, | |
67 | .hw_value = ZD_OFDM_RATE_36M, | |
68 | .flags = 0 }, | |
69 | { .bitrate = 480, | |
70 | .hw_value = ZD_OFDM_RATE_48M, | |
71 | .flags = 0 }, | |
72 | { .bitrate = 540, | |
73 | .hw_value = ZD_OFDM_RATE_54M, | |
74 | .flags = 0 }, | |
459c51ad DD |
75 | }; |
76 | ||
77 | static const struct ieee80211_channel zd_channels[] = { | |
8318d78a JB |
78 | { .center_freq = 2412, .hw_value = 1 }, |
79 | { .center_freq = 2417, .hw_value = 2 }, | |
80 | { .center_freq = 2422, .hw_value = 3 }, | |
81 | { .center_freq = 2427, .hw_value = 4 }, | |
82 | { .center_freq = 2432, .hw_value = 5 }, | |
83 | { .center_freq = 2437, .hw_value = 6 }, | |
84 | { .center_freq = 2442, .hw_value = 7 }, | |
85 | { .center_freq = 2447, .hw_value = 8 }, | |
86 | { .center_freq = 2452, .hw_value = 9 }, | |
87 | { .center_freq = 2457, .hw_value = 10 }, | |
88 | { .center_freq = 2462, .hw_value = 11 }, | |
89 | { .center_freq = 2467, .hw_value = 12 }, | |
90 | { .center_freq = 2472, .hw_value = 13 }, | |
91 | { .center_freq = 2484, .hw_value = 14 }, | |
459c51ad | 92 | }; |
e85d0918 | 93 | |
583afd1e UK |
94 | static void housekeeping_init(struct zd_mac *mac); |
95 | static void housekeeping_enable(struct zd_mac *mac); | |
96 | static void housekeeping_disable(struct zd_mac *mac); | |
97 | ||
459c51ad | 98 | int zd_mac_preinit_hw(struct ieee80211_hw *hw) |
e85d0918 DD |
99 | { |
100 | int r; | |
e85d0918 | 101 | u8 addr[ETH_ALEN]; |
459c51ad | 102 | struct zd_mac *mac = zd_hw_mac(hw); |
74553aed DD |
103 | |
104 | r = zd_chip_read_mac_addr_fw(&mac->chip, addr); | |
105 | if (r) | |
106 | return r; | |
107 | ||
459c51ad DD |
108 | SET_IEEE80211_PERM_ADDR(hw, addr); |
109 | ||
74553aed DD |
110 | return 0; |
111 | } | |
112 | ||
459c51ad | 113 | int zd_mac_init_hw(struct ieee80211_hw *hw) |
74553aed DD |
114 | { |
115 | int r; | |
459c51ad | 116 | struct zd_mac *mac = zd_hw_mac(hw); |
74553aed | 117 | struct zd_chip *chip = &mac->chip; |
e85d0918 DD |
118 | u8 default_regdomain; |
119 | ||
120 | r = zd_chip_enable_int(chip); | |
121 | if (r) | |
122 | goto out; | |
74553aed | 123 | r = zd_chip_init_hw(chip); |
e85d0918 DD |
124 | if (r) |
125 | goto disable_int; | |
126 | ||
e85d0918 | 127 | ZD_ASSERT(!irqs_disabled()); |
e85d0918 DD |
128 | |
129 | r = zd_read_regdomain(chip, &default_regdomain); | |
130 | if (r) | |
131 | goto disable_int; | |
e85d0918 DD |
132 | spin_lock_irq(&mac->lock); |
133 | mac->regdomain = mac->default_regdomain = default_regdomain; | |
134 | spin_unlock_irq(&mac->lock); | |
e85d0918 | 135 | |
40da08bc DD |
136 | /* We must inform the device that we are doing encryption/decryption in |
137 | * software at the moment. */ | |
138 | r = zd_set_encryption_type(chip, ENC_SNIFFER); | |
e85d0918 DD |
139 | if (r) |
140 | goto disable_int; | |
141 | ||
459c51ad | 142 | zd_geo_init(hw, mac->regdomain); |
e85d0918 DD |
143 | |
144 | r = 0; | |
145 | disable_int: | |
146 | zd_chip_disable_int(chip); | |
147 | out: | |
148 | return r; | |
149 | } | |
150 | ||
151 | void zd_mac_clear(struct zd_mac *mac) | |
152 | { | |
9cdac965 | 153 | flush_workqueue(zd_workqueue); |
e85d0918 | 154 | zd_chip_clear(&mac->chip); |
c48cf125 UK |
155 | ZD_ASSERT(!spin_is_locked(&mac->lock)); |
156 | ZD_MEMCLEAR(mac, sizeof(struct zd_mac)); | |
e85d0918 DD |
157 | } |
158 | ||
c5691235 | 159 | static int set_rx_filter(struct zd_mac *mac) |
e85d0918 | 160 | { |
459c51ad DD |
161 | unsigned long flags; |
162 | u32 filter = STA_RX_FILTER; | |
e85d0918 | 163 | |
459c51ad DD |
164 | spin_lock_irqsave(&mac->lock, flags); |
165 | if (mac->pass_ctrl) | |
166 | filter |= RX_FILTER_CTRL; | |
167 | spin_unlock_irqrestore(&mac->lock, flags); | |
168 | ||
169 | return zd_iowrite32(&mac->chip, CR_RX_FILTER, filter); | |
c5691235 UK |
170 | } |
171 | ||
172 | static int set_mc_hash(struct zd_mac *mac) | |
173 | { | |
174 | struct zd_mc_hash hash; | |
c5691235 | 175 | zd_mc_clear(&hash); |
c5691235 UK |
176 | return zd_chip_set_multicast_hash(&mac->chip, &hash); |
177 | } | |
178 | ||
459c51ad | 179 | static int zd_op_start(struct ieee80211_hw *hw) |
e85d0918 | 180 | { |
459c51ad | 181 | struct zd_mac *mac = zd_hw_mac(hw); |
e85d0918 | 182 | struct zd_chip *chip = &mac->chip; |
74553aed | 183 | struct zd_usb *usb = &chip->usb; |
e85d0918 DD |
184 | int r; |
185 | ||
74553aed DD |
186 | if (!usb->initialized) { |
187 | r = zd_usb_init_hw(usb); | |
188 | if (r) | |
189 | goto out; | |
190 | } | |
191 | ||
e85d0918 DD |
192 | r = zd_chip_enable_int(chip); |
193 | if (r < 0) | |
194 | goto out; | |
195 | ||
196 | r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G); | |
197 | if (r < 0) | |
198 | goto disable_int; | |
c5691235 | 199 | r = set_rx_filter(mac); |
c5691235 UK |
200 | if (r) |
201 | goto disable_int; | |
202 | r = set_mc_hash(mac); | |
e85d0918 DD |
203 | if (r) |
204 | goto disable_int; | |
205 | r = zd_chip_switch_radio_on(chip); | |
206 | if (r < 0) | |
207 | goto disable_int; | |
459c51ad | 208 | r = zd_chip_enable_rxtx(chip); |
e85d0918 DD |
209 | if (r < 0) |
210 | goto disable_radio; | |
211 | r = zd_chip_enable_hwint(chip); | |
212 | if (r < 0) | |
459c51ad | 213 | goto disable_rxtx; |
e85d0918 | 214 | |
583afd1e | 215 | housekeeping_enable(mac); |
e85d0918 | 216 | return 0; |
459c51ad DD |
217 | disable_rxtx: |
218 | zd_chip_disable_rxtx(chip); | |
e85d0918 DD |
219 | disable_radio: |
220 | zd_chip_switch_radio_off(chip); | |
221 | disable_int: | |
222 | zd_chip_disable_int(chip); | |
223 | out: | |
224 | return r; | |
225 | } | |
226 | ||
459c51ad DD |
227 | /** |
228 | * clear_tx_skb_control_block - clears the control block of tx skbuffs | |
229 | * @skb: a &struct sk_buff pointer | |
230 | * | |
231 | * This clears the control block of skbuff buffers, which were transmitted to | |
232 | * the device. Notify that the function is not thread-safe, so prevent | |
233 | * multiple calls. | |
234 | */ | |
235 | static void clear_tx_skb_control_block(struct sk_buff *skb) | |
236 | { | |
237 | struct zd_tx_skb_control_block *cb = | |
238 | (struct zd_tx_skb_control_block *)skb->cb; | |
239 | ||
240 | kfree(cb->control); | |
241 | cb->control = NULL; | |
242 | } | |
243 | ||
244 | /** | |
245 | * kfree_tx_skb - frees a tx skbuff | |
246 | * @skb: a &struct sk_buff pointer | |
247 | * | |
248 | * Frees the tx skbuff. Frees also the allocated control structure in the | |
249 | * control block if necessary. | |
250 | */ | |
251 | static void kfree_tx_skb(struct sk_buff *skb) | |
e85d0918 | 252 | { |
459c51ad DD |
253 | clear_tx_skb_control_block(skb); |
254 | dev_kfree_skb_any(skb); | |
255 | } | |
e85d0918 | 256 | |
459c51ad DD |
257 | static void zd_op_stop(struct ieee80211_hw *hw) |
258 | { | |
259 | struct zd_mac *mac = zd_hw_mac(hw); | |
260 | struct zd_chip *chip = &mac->chip; | |
261 | struct sk_buff *skb; | |
262 | struct sk_buff_head *ack_wait_queue = &mac->ack_wait_queue; | |
c9a4b35d | 263 | |
459c51ad | 264 | /* The order here deliberately is a little different from the open() |
e85d0918 | 265 | * method, since we need to make sure there is no opportunity for RX |
459c51ad | 266 | * frames to be processed by mac80211 after we have stopped it. |
e85d0918 DD |
267 | */ |
268 | ||
459c51ad | 269 | zd_chip_disable_rxtx(chip); |
583afd1e | 270 | housekeeping_disable(mac); |
b1382ede | 271 | flush_workqueue(zd_workqueue); |
b1382ede | 272 | |
e85d0918 DD |
273 | zd_chip_disable_hwint(chip); |
274 | zd_chip_switch_radio_off(chip); | |
275 | zd_chip_disable_int(chip); | |
276 | ||
e85d0918 | 277 | |
459c51ad DD |
278 | while ((skb = skb_dequeue(ack_wait_queue))) |
279 | kfree_tx_skb(skb); | |
9cdac965 UK |
280 | } |
281 | ||
459c51ad DD |
282 | /** |
283 | * init_tx_skb_control_block - initializes skb control block | |
284 | * @skb: a &sk_buff pointer | |
285 | * @dev: pointer to the mac80221 device | |
286 | * @control: mac80211 tx control applying for the frame in @skb | |
287 | * | |
288 | * Initializes the control block of the skbuff to be transmitted. | |
289 | */ | |
290 | static int init_tx_skb_control_block(struct sk_buff *skb, | |
291 | struct ieee80211_hw *hw, | |
292 | struct ieee80211_tx_control *control) | |
293 | { | |
294 | struct zd_tx_skb_control_block *cb = | |
295 | (struct zd_tx_skb_control_block *)skb->cb; | |
296 | ||
297 | ZD_ASSERT(sizeof(*cb) <= sizeof(skb->cb)); | |
298 | memset(cb, 0, sizeof(*cb)); | |
299 | cb->hw= hw; | |
300 | cb->control = kmalloc(sizeof(*control), GFP_ATOMIC); | |
301 | if (cb->control == NULL) | |
302 | return -ENOMEM; | |
303 | memcpy(cb->control, control, sizeof(*control)); | |
e85d0918 DD |
304 | |
305 | return 0; | |
306 | } | |
307 | ||
459c51ad DD |
308 | /** |
309 | * tx_status - reports tx status of a packet if required | |
310 | * @hw - a &struct ieee80211_hw pointer | |
311 | * @skb - a sk-buffer | |
312 | * @status - the tx status of the packet without control information | |
313 | * @success - True for successfull transmission of the frame | |
314 | * | |
315 | * This information calls ieee80211_tx_status_irqsafe() if required by the | |
316 | * control information. It copies the control information into the status | |
317 | * information. | |
318 | * | |
319 | * If no status information has been requested, the skb is freed. | |
320 | */ | |
321 | static void tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, | |
322 | struct ieee80211_tx_status *status, | |
323 | bool success) | |
b1382ede | 324 | { |
459c51ad DD |
325 | struct zd_tx_skb_control_block *cb = (struct zd_tx_skb_control_block *) |
326 | skb->cb; | |
b1382ede | 327 | |
459c51ad DD |
328 | ZD_ASSERT(cb->control != NULL); |
329 | memcpy(&status->control, cb->control, sizeof(status->control)); | |
330 | if (!success) | |
331 | status->excessive_retries = 1; | |
332 | clear_tx_skb_control_block(skb); | |
333 | ieee80211_tx_status_irqsafe(hw, skb, status); | |
b1382ede DD |
334 | } |
335 | ||
459c51ad DD |
336 | /** |
337 | * zd_mac_tx_failed - callback for failed frames | |
338 | * @dev: the mac80211 wireless device | |
339 | * | |
340 | * This function is called if a frame couldn't be succesfully be | |
341 | * transferred. The first frame from the tx queue, will be selected and | |
342 | * reported as error to the upper layers. | |
343 | */ | |
344 | void zd_mac_tx_failed(struct ieee80211_hw *hw) | |
b1382ede | 345 | { |
459c51ad DD |
346 | struct sk_buff_head *q = &zd_hw_mac(hw)->ack_wait_queue; |
347 | struct sk_buff *skb; | |
5078ed50 | 348 | struct ieee80211_tx_status status; |
b1382ede | 349 | |
459c51ad DD |
350 | skb = skb_dequeue(q); |
351 | if (skb == NULL) | |
352 | return; | |
5078ed50 JB |
353 | |
354 | memset(&status, 0, sizeof(status)); | |
355 | ||
459c51ad | 356 | tx_status(hw, skb, &status, 0); |
b1382ede DD |
357 | } |
358 | ||
459c51ad DD |
359 | /** |
360 | * zd_mac_tx_to_dev - callback for USB layer | |
361 | * @skb: a &sk_buff pointer | |
362 | * @error: error value, 0 if transmission successful | |
363 | * | |
364 | * Informs the MAC layer that the frame has successfully transferred to the | |
365 | * device. If an ACK is required and the transfer to the device has been | |
366 | * successful, the packets are put on the @ack_wait_queue with | |
367 | * the control set removed. | |
368 | */ | |
369 | void zd_mac_tx_to_dev(struct sk_buff *skb, int error) | |
370 | { | |
371 | struct zd_tx_skb_control_block *cb = | |
372 | (struct zd_tx_skb_control_block *)skb->cb; | |
373 | struct ieee80211_hw *hw = cb->hw; | |
374 | ||
375 | if (likely(cb->control)) { | |
376 | skb_pull(skb, sizeof(struct zd_ctrlset)); | |
377 | if (unlikely(error || | |
378 | (cb->control->flags & IEEE80211_TXCTL_NO_ACK))) | |
379 | { | |
5078ed50 JB |
380 | struct ieee80211_tx_status status; |
381 | memset(&status, 0, sizeof(status)); | |
459c51ad | 382 | tx_status(hw, skb, &status, !error); |
b1382ede | 383 | } else { |
459c51ad DD |
384 | struct sk_buff_head *q = |
385 | &zd_hw_mac(hw)->ack_wait_queue; | |
b1382ede | 386 | |
459c51ad DD |
387 | skb_queue_tail(q, skb); |
388 | while (skb_queue_len(q) > ZD_MAC_MAX_ACK_WAITERS) | |
389 | zd_mac_tx_failed(hw); | |
b1382ede | 390 | } |
459c51ad DD |
391 | } else { |
392 | kfree_tx_skb(skb); | |
e85d0918 | 393 | } |
e85d0918 DD |
394 | } |
395 | ||
b1cd8416 | 396 | static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length) |
e85d0918 | 397 | { |
64f222cc | 398 | /* ZD_PURE_RATE() must be used to remove the modulation type flag of |
459c51ad DD |
399 | * the zd-rate values. |
400 | */ | |
e85d0918 | 401 | static const u8 rate_divisor[] = { |
459c51ad DD |
402 | [ZD_PURE_RATE(ZD_CCK_RATE_1M)] = 1, |
403 | [ZD_PURE_RATE(ZD_CCK_RATE_2M)] = 2, | |
404 | /* Bits must be doubled. */ | |
405 | [ZD_PURE_RATE(ZD_CCK_RATE_5_5M)] = 11, | |
406 | [ZD_PURE_RATE(ZD_CCK_RATE_11M)] = 11, | |
407 | [ZD_PURE_RATE(ZD_OFDM_RATE_6M)] = 6, | |
408 | [ZD_PURE_RATE(ZD_OFDM_RATE_9M)] = 9, | |
409 | [ZD_PURE_RATE(ZD_OFDM_RATE_12M)] = 12, | |
410 | [ZD_PURE_RATE(ZD_OFDM_RATE_18M)] = 18, | |
411 | [ZD_PURE_RATE(ZD_OFDM_RATE_24M)] = 24, | |
412 | [ZD_PURE_RATE(ZD_OFDM_RATE_36M)] = 36, | |
413 | [ZD_PURE_RATE(ZD_OFDM_RATE_48M)] = 48, | |
414 | [ZD_PURE_RATE(ZD_OFDM_RATE_54M)] = 54, | |
e85d0918 DD |
415 | }; |
416 | ||
417 | u32 bits = (u32)tx_length * 8; | |
418 | u32 divisor; | |
419 | ||
64f222cc | 420 | divisor = rate_divisor[ZD_PURE_RATE(zd_rate)]; |
e85d0918 DD |
421 | if (divisor == 0) |
422 | return -EINVAL; | |
423 | ||
b1cd8416 DD |
424 | switch (zd_rate) { |
425 | case ZD_CCK_RATE_5_5M: | |
e85d0918 DD |
426 | bits = (2*bits) + 10; /* round up to the next integer */ |
427 | break; | |
b1cd8416 | 428 | case ZD_CCK_RATE_11M: |
e85d0918 DD |
429 | if (service) { |
430 | u32 t = bits % 11; | |
431 | *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
432 | if (0 < t && t <= 3) { | |
433 | *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
434 | } | |
435 | } | |
436 | bits += 10; /* round up to the next integer */ | |
437 | break; | |
438 | } | |
439 | ||
440 | return bits/divisor; | |
441 | } | |
442 | ||
e85d0918 | 443 | static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, |
459c51ad | 444 | struct ieee80211_hdr *header, u32 flags) |
e85d0918 | 445 | { |
459c51ad | 446 | u16 fctl = le16_to_cpu(header->frame_control); |
e85d0918 DD |
447 | |
448 | /* | |
b1382ede | 449 | * CONTROL TODO: |
e85d0918 DD |
450 | * - if backoff needed, enable bit 0 |
451 | * - if burst (backoff not needed) disable bit 0 | |
e85d0918 DD |
452 | */ |
453 | ||
454 | cs->control = 0; | |
455 | ||
456 | /* First fragment */ | |
459c51ad | 457 | if (flags & IEEE80211_TXCTL_FIRST_FRAGMENT) |
e85d0918 DD |
458 | cs->control |= ZD_CS_NEED_RANDOM_BACKOFF; |
459 | ||
460 | /* Multicast */ | |
461 | if (is_multicast_ether_addr(header->addr1)) | |
462 | cs->control |= ZD_CS_MULTICAST; | |
463 | ||
464 | /* PS-POLL */ | |
459c51ad DD |
465 | if ((fctl & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE)) == |
466 | (IEEE80211_FTYPE_CTL|IEEE80211_STYPE_PSPOLL)) | |
e85d0918 DD |
467 | cs->control |= ZD_CS_PS_POLL_FRAME; |
468 | ||
459c51ad | 469 | if (flags & IEEE80211_TXCTL_USE_RTS_CTS) |
b1382ede DD |
470 | cs->control |= ZD_CS_RTS; |
471 | ||
459c51ad | 472 | if (flags & IEEE80211_TXCTL_USE_CTS_PROTECT) |
b1382ede | 473 | cs->control |= ZD_CS_SELF_CTS; |
e85d0918 DD |
474 | |
475 | /* FIXME: Management frame? */ | |
476 | } | |
477 | ||
72e77a8a LCC |
478 | void zd_mac_config_beacon(struct ieee80211_hw *hw, struct sk_buff *beacon) |
479 | { | |
480 | struct zd_mac *mac = zd_hw_mac(hw); | |
481 | u32 tmp, j = 0; | |
482 | /* 4 more bytes for tail CRC */ | |
483 | u32 full_len = beacon->len + 4; | |
484 | zd_iowrite32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, 0); | |
485 | zd_ioread32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, &tmp); | |
486 | while (tmp & 0x2) { | |
487 | zd_ioread32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, &tmp); | |
488 | if ((++j % 100) == 0) { | |
489 | printk(KERN_ERR "CR_BCN_FIFO_SEMAPHORE not ready\n"); | |
490 | if (j >= 500) { | |
491 | printk(KERN_ERR "Giving up beacon config.\n"); | |
492 | return; | |
493 | } | |
494 | } | |
495 | msleep(1); | |
496 | } | |
497 | ||
498 | zd_iowrite32(&mac->chip, CR_BCN_FIFO, full_len - 1); | |
499 | if (zd_chip_is_zd1211b(&mac->chip)) | |
500 | zd_iowrite32(&mac->chip, CR_BCN_LENGTH, full_len - 1); | |
501 | ||
502 | for (j = 0 ; j < beacon->len; j++) | |
503 | zd_iowrite32(&mac->chip, CR_BCN_FIFO, | |
504 | *((u8 *)(beacon->data + j))); | |
505 | ||
506 | for (j = 0; j < 4; j++) | |
507 | zd_iowrite32(&mac->chip, CR_BCN_FIFO, 0x0); | |
508 | ||
509 | zd_iowrite32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, 1); | |
510 | /* 802.11b/g 2.4G CCK 1Mb | |
511 | * 802.11a, not yet implemented, uses different values (see GPL vendor | |
512 | * driver) | |
513 | */ | |
514 | zd_iowrite32(&mac->chip, CR_BCN_PLCP_CFG, 0x00000400 | | |
515 | (full_len << 19)); | |
516 | } | |
517 | ||
e85d0918 | 518 | static int fill_ctrlset(struct zd_mac *mac, |
459c51ad DD |
519 | struct sk_buff *skb, |
520 | struct ieee80211_tx_control *control) | |
e85d0918 DD |
521 | { |
522 | int r; | |
459c51ad DD |
523 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
524 | unsigned int frag_len = skb->len + FCS_LEN; | |
e85d0918 DD |
525 | unsigned int packet_length; |
526 | struct zd_ctrlset *cs = (struct zd_ctrlset *) | |
527 | skb_push(skb, sizeof(struct zd_ctrlset)); | |
528 | ||
e85d0918 | 529 | ZD_ASSERT(frag_len <= 0xffff); |
e85d0918 | 530 | |
8318d78a JB |
531 | cs->modulation = control->tx_rate->hw_value; |
532 | if (control->flags & IEEE80211_TXCTL_SHORT_PREAMBLE) | |
533 | cs->modulation = control->tx_rate->hw_value_short; | |
e85d0918 DD |
534 | |
535 | cs->tx_length = cpu_to_le16(frag_len); | |
536 | ||
459c51ad | 537 | cs_set_control(mac, cs, hdr, control->flags); |
e85d0918 DD |
538 | |
539 | packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; | |
540 | ZD_ASSERT(packet_length <= 0xffff); | |
541 | /* ZD1211B: Computing the length difference this way, gives us | |
542 | * flexibility to compute the packet length. | |
543 | */ | |
74553aed | 544 | cs->packet_length = cpu_to_le16(zd_chip_is_zd1211b(&mac->chip) ? |
e85d0918 DD |
545 | packet_length - frag_len : packet_length); |
546 | ||
547 | /* | |
548 | * CURRENT LENGTH: | |
549 | * - transmit frame length in microseconds | |
550 | * - seems to be derived from frame length | |
551 | * - see Cal_Us_Service() in zdinlinef.h | |
552 | * - if macp->bTxBurstEnable is enabled, then multiply by 4 | |
553 | * - bTxBurstEnable is never set in the vendor driver | |
554 | * | |
555 | * SERVICE: | |
556 | * - "for PLCP configuration" | |
557 | * - always 0 except in some situations at 802.11b 11M | |
558 | * - see line 53 of zdinlinef.h | |
559 | */ | |
560 | cs->service = 0; | |
64f222cc | 561 | r = zd_calc_tx_length_us(&cs->service, ZD_RATE(cs->modulation), |
e85d0918 DD |
562 | le16_to_cpu(cs->tx_length)); |
563 | if (r < 0) | |
564 | return r; | |
565 | cs->current_length = cpu_to_le16(r); | |
459c51ad | 566 | cs->next_frame_length = 0; |
e85d0918 DD |
567 | |
568 | return 0; | |
569 | } | |
570 | ||
459c51ad DD |
571 | /** |
572 | * zd_op_tx - transmits a network frame to the device | |
573 | * | |
574 | * @dev: mac80211 hardware device | |
575 | * @skb: socket buffer | |
576 | * @control: the control structure | |
577 | * | |
578 | * This function transmit an IEEE 802.11 network frame to the device. The | |
579 | * control block of the skbuff will be initialized. If necessary the incoming | |
580 | * mac80211 queues will be stopped. | |
581 | */ | |
582 | static int zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb, | |
583 | struct ieee80211_tx_control *control) | |
e85d0918 | 584 | { |
459c51ad DD |
585 | struct zd_mac *mac = zd_hw_mac(hw); |
586 | int r; | |
e85d0918 | 587 | |
459c51ad DD |
588 | r = fill_ctrlset(mac, skb, control); |
589 | if (r) | |
590 | return r; | |
e85d0918 | 591 | |
459c51ad DD |
592 | r = init_tx_skb_control_block(skb, hw, control); |
593 | if (r) | |
594 | return r; | |
595 | r = zd_usb_tx(&mac->chip.usb, skb); | |
596 | if (r) { | |
597 | clear_tx_skb_control_block(skb); | |
598 | return r; | |
e85d0918 | 599 | } |
e85d0918 DD |
600 | return 0; |
601 | } | |
602 | ||
459c51ad DD |
603 | /** |
604 | * filter_ack - filters incoming packets for acknowledgements | |
605 | * @dev: the mac80211 device | |
606 | * @rx_hdr: received header | |
607 | * @stats: the status for the received packet | |
741fec53 | 608 | * |
459c51ad DD |
609 | * This functions looks for ACK packets and tries to match them with the |
610 | * frames in the tx queue. If a match is found the frame will be dequeued and | |
611 | * the upper layers is informed about the successful transmission. If | |
612 | * mac80211 queues have been stopped and the number of frames still to be | |
613 | * transmitted is low the queues will be opened again. | |
e85d0918 | 614 | * |
459c51ad | 615 | * Returns 1 if the frame was an ACK, 0 if it was ignored. |
e85d0918 | 616 | */ |
459c51ad DD |
617 | static int filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr, |
618 | struct ieee80211_rx_status *stats) | |
e85d0918 | 619 | { |
459c51ad DD |
620 | u16 fc = le16_to_cpu(rx_hdr->frame_control); |
621 | struct sk_buff *skb; | |
622 | struct sk_buff_head *q; | |
623 | unsigned long flags; | |
e85d0918 | 624 | |
459c51ad DD |
625 | if ((fc & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) != |
626 | (IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK)) | |
e85d0918 | 627 | return 0; |
e85d0918 | 628 | |
459c51ad DD |
629 | q = &zd_hw_mac(hw)->ack_wait_queue; |
630 | spin_lock_irqsave(&q->lock, flags); | |
631 | for (skb = q->next; skb != (struct sk_buff *)q; skb = skb->next) { | |
632 | struct ieee80211_hdr *tx_hdr; | |
633 | ||
634 | tx_hdr = (struct ieee80211_hdr *)skb->data; | |
635 | if (likely(!compare_ether_addr(tx_hdr->addr2, rx_hdr->addr1))) | |
636 | { | |
5078ed50 JB |
637 | struct ieee80211_tx_status status; |
638 | ||
639 | memset(&status, 0, sizeof(status)); | |
459c51ad | 640 | status.flags = IEEE80211_TX_STATUS_ACK; |
566bfe5a | 641 | status.ack_signal = stats->signal; |
459c51ad DD |
642 | __skb_unlink(skb, q); |
643 | tx_status(hw, skb, &status, 1); | |
644 | goto out; | |
645 | } | |
646 | } | |
647 | out: | |
648 | spin_unlock_irqrestore(&q->lock, flags); | |
649 | return 1; | |
e85d0918 DD |
650 | } |
651 | ||
459c51ad | 652 | int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length) |
e85d0918 | 653 | { |
459c51ad DD |
654 | struct zd_mac *mac = zd_hw_mac(hw); |
655 | struct ieee80211_rx_status stats; | |
656 | const struct rx_status *status; | |
657 | struct sk_buff *skb; | |
658 | int bad_frame = 0; | |
9081728b MB |
659 | u16 fc; |
660 | bool is_qos, is_4addr, need_padding; | |
8318d78a JB |
661 | int i; |
662 | u8 rate; | |
db888aed | 663 | |
459c51ad DD |
664 | if (length < ZD_PLCP_HEADER_SIZE + 10 /* IEEE80211_1ADDR_LEN */ + |
665 | FCS_LEN + sizeof(struct rx_status)) | |
666 | return -EINVAL; | |
e85d0918 | 667 | |
459c51ad | 668 | memset(&stats, 0, sizeof(stats)); |
e85d0918 | 669 | |
459c51ad DD |
670 | /* Note about pass_failed_fcs and pass_ctrl access below: |
671 | * mac locking intentionally omitted here, as this is the only unlocked | |
672 | * reader and the only writer is configure_filter. Plus, if there were | |
673 | * any races accessing these variables, it wouldn't really matter. | |
674 | * If mac80211 ever provides a way for us to access filter flags | |
675 | * from outside configure_filter, we could improve on this. Also, this | |
676 | * situation may change once we implement some kind of DMA-into-skb | |
677 | * RX path. */ | |
e85d0918 | 678 | |
459c51ad DD |
679 | /* Caller has to ensure that length >= sizeof(struct rx_status). */ |
680 | status = (struct rx_status *) | |
937a049d | 681 | (buffer + (length - sizeof(struct rx_status))); |
e85d0918 | 682 | if (status->frame_status & ZD_RX_ERROR) { |
459c51ad DD |
683 | if (mac->pass_failed_fcs && |
684 | (status->frame_status & ZD_RX_CRC32_ERROR)) { | |
685 | stats.flag |= RX_FLAG_FAILED_FCS_CRC; | |
686 | bad_frame = 1; | |
687 | } else { | |
688 | return -EINVAL; | |
22d3405f | 689 | } |
e85d0918 | 690 | } |
22d3405f | 691 | |
8318d78a JB |
692 | stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq; |
693 | stats.band = IEEE80211_BAND_2GHZ; | |
566bfe5a BR |
694 | stats.signal = status->signal_strength; |
695 | stats.qual = zd_rx_qual_percent(buffer, | |
e85d0918 DD |
696 | length - sizeof(struct rx_status), |
697 | status); | |
8318d78a JB |
698 | |
699 | rate = zd_rx_rate(buffer, status); | |
700 | ||
701 | /* todo: return index in the big switches in zd_rx_rate instead */ | |
702 | for (i = 0; i < mac->band.n_bitrates; i++) | |
703 | if (rate == mac->band.bitrates[i].hw_value) | |
704 | stats.rate_idx = i; | |
459c51ad DD |
705 | |
706 | length -= ZD_PLCP_HEADER_SIZE + sizeof(struct rx_status); | |
707 | buffer += ZD_PLCP_HEADER_SIZE; | |
708 | ||
709 | /* Except for bad frames, filter each frame to see if it is an ACK, in | |
710 | * which case our internal TX tracking is updated. Normally we then | |
711 | * bail here as there's no need to pass ACKs on up to the stack, but | |
712 | * there is also the case where the stack has requested us to pass | |
713 | * control frames on up (pass_ctrl) which we must consider. */ | |
714 | if (!bad_frame && | |
715 | filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) | |
716 | && !mac->pass_ctrl) | |
717 | return 0; | |
e85d0918 | 718 | |
9081728b MB |
719 | fc = le16_to_cpu(*((__le16 *) buffer)); |
720 | ||
721 | is_qos = ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && | |
722 | ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_QOS_DATA); | |
723 | is_4addr = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
724 | (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS); | |
725 | need_padding = is_qos ^ is_4addr; | |
726 | ||
727 | skb = dev_alloc_skb(length + (need_padding ? 2 : 0)); | |
459c51ad DD |
728 | if (skb == NULL) |
729 | return -ENOMEM; | |
9081728b MB |
730 | if (need_padding) { |
731 | /* Make sure the the payload data is 4 byte aligned. */ | |
732 | skb_reserve(skb, 2); | |
733 | } | |
734 | ||
459c51ad DD |
735 | memcpy(skb_put(skb, length), buffer, length); |
736 | ||
737 | ieee80211_rx_irqsafe(hw, skb, &stats); | |
e85d0918 DD |
738 | return 0; |
739 | } | |
740 | ||
459c51ad DD |
741 | static int zd_op_add_interface(struct ieee80211_hw *hw, |
742 | struct ieee80211_if_init_conf *conf) | |
e85d0918 | 743 | { |
459c51ad | 744 | struct zd_mac *mac = zd_hw_mac(hw); |
e85d0918 | 745 | |
459c51ad DD |
746 | /* using IEEE80211_IF_TYPE_INVALID to indicate no mode selected */ |
747 | if (mac->type != IEEE80211_IF_TYPE_INVALID) | |
748 | return -EOPNOTSUPP; | |
e85d0918 | 749 | |
459c51ad DD |
750 | switch (conf->type) { |
751 | case IEEE80211_IF_TYPE_MNTR: | |
72e77a8a | 752 | case IEEE80211_IF_TYPE_MESH_POINT: |
459c51ad | 753 | case IEEE80211_IF_TYPE_STA: |
84e6dc9a | 754 | case IEEE80211_IF_TYPE_IBSS: |
459c51ad DD |
755 | mac->type = conf->type; |
756 | break; | |
757 | default: | |
758 | return -EOPNOTSUPP; | |
4d1feabc | 759 | } |
e85d0918 | 760 | |
459c51ad DD |
761 | return zd_write_mac_addr(&mac->chip, conf->mac_addr); |
762 | } | |
e85d0918 | 763 | |
459c51ad DD |
764 | static void zd_op_remove_interface(struct ieee80211_hw *hw, |
765 | struct ieee80211_if_init_conf *conf) | |
766 | { | |
767 | struct zd_mac *mac = zd_hw_mac(hw); | |
768 | mac->type = IEEE80211_IF_TYPE_INVALID; | |
769 | zd_write_mac_addr(&mac->chip, NULL); | |
770 | } | |
93137943 | 771 | |
459c51ad DD |
772 | static int zd_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) |
773 | { | |
774 | struct zd_mac *mac = zd_hw_mac(hw); | |
8318d78a | 775 | return zd_chip_set_channel(&mac->chip, conf->channel->hw_value); |
459c51ad | 776 | } |
db888aed | 777 | |
32bfd35d JB |
778 | static int zd_op_config_interface(struct ieee80211_hw *hw, |
779 | struct ieee80211_vif *vif, | |
459c51ad DD |
780 | struct ieee80211_if_conf *conf) |
781 | { | |
782 | struct zd_mac *mac = zd_hw_mac(hw); | |
72e77a8a LCC |
783 | int associated; |
784 | ||
84e6dc9a BR |
785 | if (mac->type == IEEE80211_IF_TYPE_MESH_POINT || |
786 | mac->type == IEEE80211_IF_TYPE_IBSS) { | |
72e77a8a LCC |
787 | associated = true; |
788 | if (conf->beacon) { | |
789 | zd_mac_config_beacon(hw, conf->beacon); | |
790 | kfree_skb(conf->beacon); | |
791 | zd_set_beacon_interval(&mac->chip, BCN_MODE_IBSS | | |
792 | hw->conf.beacon_int); | |
793 | } | |
794 | } else | |
795 | associated = is_valid_ether_addr(conf->bssid); | |
e85d0918 | 796 | |
459c51ad | 797 | spin_lock_irq(&mac->lock); |
72e77a8a | 798 | mac->associated = associated; |
459c51ad | 799 | spin_unlock_irq(&mac->lock); |
e85d0918 | 800 | |
459c51ad DD |
801 | /* TODO: do hardware bssid filtering */ |
802 | return 0; | |
4d1feabc UK |
803 | } |
804 | ||
72e77a8a LCC |
805 | void zd_process_intr(struct work_struct *work) |
806 | { | |
807 | u16 int_status; | |
808 | struct zd_mac *mac = container_of(work, struct zd_mac, process_intr); | |
809 | ||
810 | int_status = le16_to_cpu(*(u16 *)(mac->intr_buffer+4)); | |
811 | if (int_status & INT_CFG_NEXT_BCN) { | |
812 | if (net_ratelimit()) | |
813 | dev_dbg_f(zd_mac_dev(mac), "INT_CFG_NEXT_BCN\n"); | |
814 | } else | |
815 | dev_dbg_f(zd_mac_dev(mac), "Unsupported interrupt\n"); | |
816 | ||
817 | zd_chip_enable_hwint(&mac->chip); | |
818 | } | |
819 | ||
820 | ||
459c51ad | 821 | static void set_multicast_hash_handler(struct work_struct *work) |
4d1feabc | 822 | { |
459c51ad DD |
823 | struct zd_mac *mac = |
824 | container_of(work, struct zd_mac, set_multicast_hash_work); | |
825 | struct zd_mc_hash hash; | |
4d1feabc | 826 | |
459c51ad DD |
827 | spin_lock_irq(&mac->lock); |
828 | hash = mac->multicast_hash; | |
829 | spin_unlock_irq(&mac->lock); | |
4d1feabc | 830 | |
459c51ad | 831 | zd_chip_set_multicast_hash(&mac->chip, &hash); |
e85d0918 DD |
832 | } |
833 | ||
459c51ad | 834 | static void set_rx_filter_handler(struct work_struct *work) |
e85d0918 | 835 | { |
459c51ad DD |
836 | struct zd_mac *mac = |
837 | container_of(work, struct zd_mac, set_rx_filter_work); | |
838 | int r; | |
839 | ||
840 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
841 | r = set_rx_filter(mac); | |
842 | if (r) | |
843 | dev_err(zd_mac_dev(mac), "set_rx_filter_handler error %d\n", r); | |
e85d0918 DD |
844 | } |
845 | ||
459c51ad DD |
846 | #define SUPPORTED_FIF_FLAGS \ |
847 | (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \ | |
2c1a1b12 | 848 | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC) |
459c51ad DD |
849 | static void zd_op_configure_filter(struct ieee80211_hw *hw, |
850 | unsigned int changed_flags, | |
851 | unsigned int *new_flags, | |
852 | int mc_count, struct dev_mc_list *mclist) | |
e85d0918 | 853 | { |
459c51ad DD |
854 | struct zd_mc_hash hash; |
855 | struct zd_mac *mac = zd_hw_mac(hw); | |
856 | unsigned long flags; | |
857 | int i; | |
e85d0918 | 858 | |
459c51ad DD |
859 | /* Only deal with supported flags */ |
860 | changed_flags &= SUPPORTED_FIF_FLAGS; | |
861 | *new_flags &= SUPPORTED_FIF_FLAGS; | |
862 | ||
863 | /* changed_flags is always populated but this driver | |
864 | * doesn't support all FIF flags so its possible we don't | |
865 | * need to do anything */ | |
866 | if (!changed_flags) | |
867 | return; | |
868 | ||
869 | if (*new_flags & (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)) { | |
870 | zd_mc_add_all(&hash); | |
871 | } else { | |
872 | DECLARE_MAC_BUF(macbuf); | |
873 | ||
874 | zd_mc_clear(&hash); | |
875 | for (i = 0; i < mc_count; i++) { | |
876 | if (!mclist) | |
877 | break; | |
878 | dev_dbg_f(zd_mac_dev(mac), "mc addr %s\n", | |
879 | print_mac(macbuf, mclist->dmi_addr)); | |
880 | zd_mc_add_addr(&hash, mclist->dmi_addr); | |
881 | mclist = mclist->next; | |
882 | } | |
e85d0918 | 883 | } |
459c51ad DD |
884 | |
885 | spin_lock_irqsave(&mac->lock, flags); | |
886 | mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL); | |
887 | mac->pass_ctrl = !!(*new_flags & FIF_CONTROL); | |
888 | mac->multicast_hash = hash; | |
889 | spin_unlock_irqrestore(&mac->lock, flags); | |
890 | queue_work(zd_workqueue, &mac->set_multicast_hash_work); | |
891 | ||
892 | if (changed_flags & FIF_CONTROL) | |
893 | queue_work(zd_workqueue, &mac->set_rx_filter_work); | |
894 | ||
895 | /* no handling required for FIF_OTHER_BSS as we don't currently | |
896 | * do BSSID filtering */ | |
897 | /* FIXME: in future it would be nice to enable the probe response | |
898 | * filter (so that the driver doesn't see them) until | |
899 | * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd | |
900 | * have to schedule work to enable prbresp reception, which might | |
901 | * happen too late. For now we'll just listen and forward them all the | |
902 | * time. */ | |
e85d0918 DD |
903 | } |
904 | ||
459c51ad | 905 | static void set_rts_cts_work(struct work_struct *work) |
e85d0918 | 906 | { |
459c51ad DD |
907 | struct zd_mac *mac = |
908 | container_of(work, struct zd_mac, set_rts_cts_work); | |
909 | unsigned long flags; | |
910 | unsigned int short_preamble; | |
911 | ||
912 | mutex_lock(&mac->chip.mutex); | |
913 | ||
914 | spin_lock_irqsave(&mac->lock, flags); | |
915 | mac->updating_rts_rate = 0; | |
916 | short_preamble = mac->short_preamble; | |
917 | spin_unlock_irqrestore(&mac->lock, flags); | |
918 | ||
919 | zd_chip_set_rts_cts_rate_locked(&mac->chip, short_preamble); | |
920 | mutex_unlock(&mac->chip.mutex); | |
e85d0918 DD |
921 | } |
922 | ||
471b3efd JB |
923 | static void zd_op_bss_info_changed(struct ieee80211_hw *hw, |
924 | struct ieee80211_vif *vif, | |
925 | struct ieee80211_bss_conf *bss_conf, | |
926 | u32 changes) | |
e85d0918 | 927 | { |
459c51ad DD |
928 | struct zd_mac *mac = zd_hw_mac(hw); |
929 | unsigned long flags; | |
930 | ||
931 | dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes); | |
932 | ||
471b3efd | 933 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
459c51ad | 934 | spin_lock_irqsave(&mac->lock, flags); |
471b3efd | 935 | mac->short_preamble = bss_conf->use_short_preamble; |
459c51ad DD |
936 | if (!mac->updating_rts_rate) { |
937 | mac->updating_rts_rate = 1; | |
938 | /* FIXME: should disable TX here, until work has | |
939 | * completed and RTS_CTS reg is updated */ | |
940 | queue_work(zd_workqueue, &mac->set_rts_cts_work); | |
941 | } | |
942 | spin_unlock_irqrestore(&mac->lock, flags); | |
943 | } | |
e85d0918 DD |
944 | } |
945 | ||
84e6dc9a BR |
946 | static int zd_op_beacon_update(struct ieee80211_hw *hw, |
947 | struct sk_buff *skb, | |
948 | struct ieee80211_tx_control *ctl) | |
949 | { | |
950 | struct zd_mac *mac = zd_hw_mac(hw); | |
951 | zd_mac_config_beacon(hw, skb); | |
952 | kfree_skb(skb); | |
953 | zd_set_beacon_interval(&mac->chip, BCN_MODE_IBSS | | |
954 | hw->conf.beacon_int); | |
955 | return 0; | |
956 | } | |
957 | ||
459c51ad DD |
958 | static const struct ieee80211_ops zd_ops = { |
959 | .tx = zd_op_tx, | |
960 | .start = zd_op_start, | |
961 | .stop = zd_op_stop, | |
962 | .add_interface = zd_op_add_interface, | |
963 | .remove_interface = zd_op_remove_interface, | |
964 | .config = zd_op_config, | |
965 | .config_interface = zd_op_config_interface, | |
966 | .configure_filter = zd_op_configure_filter, | |
471b3efd | 967 | .bss_info_changed = zd_op_bss_info_changed, |
84e6dc9a | 968 | .beacon_update = zd_op_beacon_update, |
459c51ad DD |
969 | }; |
970 | ||
971 | struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf) | |
e85d0918 | 972 | { |
459c51ad DD |
973 | struct zd_mac *mac; |
974 | struct ieee80211_hw *hw; | |
e85d0918 | 975 | |
459c51ad DD |
976 | hw = ieee80211_alloc_hw(sizeof(struct zd_mac), &zd_ops); |
977 | if (!hw) { | |
978 | dev_dbg_f(&intf->dev, "out of memory\n"); | |
979 | return NULL; | |
db888aed | 980 | } |
459c51ad DD |
981 | |
982 | mac = zd_hw_mac(hw); | |
983 | ||
984 | memset(mac, 0, sizeof(*mac)); | |
985 | spin_lock_init(&mac->lock); | |
986 | mac->hw = hw; | |
987 | ||
988 | mac->type = IEEE80211_IF_TYPE_INVALID; | |
989 | ||
990 | memcpy(mac->channels, zd_channels, sizeof(zd_channels)); | |
991 | memcpy(mac->rates, zd_rates, sizeof(zd_rates)); | |
8318d78a JB |
992 | mac->band.n_bitrates = ARRAY_SIZE(zd_rates); |
993 | mac->band.bitrates = mac->rates; | |
994 | mac->band.n_channels = ARRAY_SIZE(zd_channels); | |
995 | mac->band.channels = mac->channels; | |
996 | ||
997 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &mac->band; | |
998 | ||
72e77a8a | 999 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
566bfe5a BR |
1000 | IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE | |
1001 | IEEE80211_HW_SIGNAL_DB; | |
459c51ad | 1002 | |
566bfe5a | 1003 | hw->max_signal = 100; |
459c51ad DD |
1004 | hw->queues = 1; |
1005 | hw->extra_tx_headroom = sizeof(struct zd_ctrlset); | |
1006 | ||
1007 | skb_queue_head_init(&mac->ack_wait_queue); | |
1008 | ||
459c51ad DD |
1009 | zd_chip_init(&mac->chip, hw, intf); |
1010 | housekeeping_init(mac); | |
1011 | INIT_WORK(&mac->set_multicast_hash_work, set_multicast_hash_handler); | |
1012 | INIT_WORK(&mac->set_rts_cts_work, set_rts_cts_work); | |
1013 | INIT_WORK(&mac->set_rx_filter_work, set_rx_filter_handler); | |
72e77a8a | 1014 | INIT_WORK(&mac->process_intr, zd_process_intr); |
459c51ad DD |
1015 | |
1016 | SET_IEEE80211_DEV(hw, &intf->dev); | |
1017 | return hw; | |
e85d0918 DD |
1018 | } |
1019 | ||
583afd1e UK |
1020 | #define LINK_LED_WORK_DELAY HZ |
1021 | ||
c4028958 | 1022 | static void link_led_handler(struct work_struct *work) |
583afd1e | 1023 | { |
c4028958 DH |
1024 | struct zd_mac *mac = |
1025 | container_of(work, struct zd_mac, housekeeping.link_led_work.work); | |
583afd1e | 1026 | struct zd_chip *chip = &mac->chip; |
583afd1e UK |
1027 | int is_associated; |
1028 | int r; | |
1029 | ||
1030 | spin_lock_irq(&mac->lock); | |
459c51ad | 1031 | is_associated = mac->associated; |
583afd1e UK |
1032 | spin_unlock_irq(&mac->lock); |
1033 | ||
1034 | r = zd_chip_control_leds(chip, | |
1035 | is_associated ? LED_ASSOCIATED : LED_SCANNING); | |
1036 | if (r) | |
459c51ad | 1037 | dev_dbg_f(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r); |
583afd1e UK |
1038 | |
1039 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
1040 | LINK_LED_WORK_DELAY); | |
1041 | } | |
1042 | ||
1043 | static void housekeeping_init(struct zd_mac *mac) | |
1044 | { | |
c4028958 | 1045 | INIT_DELAYED_WORK(&mac->housekeeping.link_led_work, link_led_handler); |
583afd1e UK |
1046 | } |
1047 | ||
1048 | static void housekeeping_enable(struct zd_mac *mac) | |
1049 | { | |
1050 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
1051 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
1052 | 0); | |
1053 | } | |
1054 | ||
1055 | static void housekeeping_disable(struct zd_mac *mac) | |
1056 | { | |
1057 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
1058 | cancel_rearming_delayed_workqueue(zd_workqueue, | |
1059 | &mac->housekeeping.link_led_work); | |
1060 | zd_chip_control_leds(&mac->chip, LED_OFF); | |
1061 | } |