Commit | Line | Data |
---|---|---|
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 | ||
478 | static int fill_ctrlset(struct zd_mac *mac, | |
459c51ad DD |
479 | struct sk_buff *skb, |
480 | struct ieee80211_tx_control *control) | |
e85d0918 DD |
481 | { |
482 | int r; | |
459c51ad DD |
483 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
484 | unsigned int frag_len = skb->len + FCS_LEN; | |
e85d0918 DD |
485 | unsigned int packet_length; |
486 | struct zd_ctrlset *cs = (struct zd_ctrlset *) | |
487 | skb_push(skb, sizeof(struct zd_ctrlset)); | |
488 | ||
e85d0918 | 489 | ZD_ASSERT(frag_len <= 0xffff); |
e85d0918 | 490 | |
8318d78a JB |
491 | cs->modulation = control->tx_rate->hw_value; |
492 | if (control->flags & IEEE80211_TXCTL_SHORT_PREAMBLE) | |
493 | cs->modulation = control->tx_rate->hw_value_short; | |
e85d0918 DD |
494 | |
495 | cs->tx_length = cpu_to_le16(frag_len); | |
496 | ||
459c51ad | 497 | cs_set_control(mac, cs, hdr, control->flags); |
e85d0918 DD |
498 | |
499 | packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; | |
500 | ZD_ASSERT(packet_length <= 0xffff); | |
501 | /* ZD1211B: Computing the length difference this way, gives us | |
502 | * flexibility to compute the packet length. | |
503 | */ | |
74553aed | 504 | cs->packet_length = cpu_to_le16(zd_chip_is_zd1211b(&mac->chip) ? |
e85d0918 DD |
505 | packet_length - frag_len : packet_length); |
506 | ||
507 | /* | |
508 | * CURRENT LENGTH: | |
509 | * - transmit frame length in microseconds | |
510 | * - seems to be derived from frame length | |
511 | * - see Cal_Us_Service() in zdinlinef.h | |
512 | * - if macp->bTxBurstEnable is enabled, then multiply by 4 | |
513 | * - bTxBurstEnable is never set in the vendor driver | |
514 | * | |
515 | * SERVICE: | |
516 | * - "for PLCP configuration" | |
517 | * - always 0 except in some situations at 802.11b 11M | |
518 | * - see line 53 of zdinlinef.h | |
519 | */ | |
520 | cs->service = 0; | |
64f222cc | 521 | r = zd_calc_tx_length_us(&cs->service, ZD_RATE(cs->modulation), |
e85d0918 DD |
522 | le16_to_cpu(cs->tx_length)); |
523 | if (r < 0) | |
524 | return r; | |
525 | cs->current_length = cpu_to_le16(r); | |
459c51ad | 526 | cs->next_frame_length = 0; |
e85d0918 DD |
527 | |
528 | return 0; | |
529 | } | |
530 | ||
459c51ad DD |
531 | /** |
532 | * zd_op_tx - transmits a network frame to the device | |
533 | * | |
534 | * @dev: mac80211 hardware device | |
535 | * @skb: socket buffer | |
536 | * @control: the control structure | |
537 | * | |
538 | * This function transmit an IEEE 802.11 network frame to the device. The | |
539 | * control block of the skbuff will be initialized. If necessary the incoming | |
540 | * mac80211 queues will be stopped. | |
541 | */ | |
542 | static int zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb, | |
543 | struct ieee80211_tx_control *control) | |
e85d0918 | 544 | { |
459c51ad DD |
545 | struct zd_mac *mac = zd_hw_mac(hw); |
546 | int r; | |
e85d0918 | 547 | |
459c51ad DD |
548 | r = fill_ctrlset(mac, skb, control); |
549 | if (r) | |
550 | return r; | |
e85d0918 | 551 | |
459c51ad DD |
552 | r = init_tx_skb_control_block(skb, hw, control); |
553 | if (r) | |
554 | return r; | |
555 | r = zd_usb_tx(&mac->chip.usb, skb); | |
556 | if (r) { | |
557 | clear_tx_skb_control_block(skb); | |
558 | return r; | |
e85d0918 | 559 | } |
e85d0918 DD |
560 | return 0; |
561 | } | |
562 | ||
459c51ad DD |
563 | /** |
564 | * filter_ack - filters incoming packets for acknowledgements | |
565 | * @dev: the mac80211 device | |
566 | * @rx_hdr: received header | |
567 | * @stats: the status for the received packet | |
741fec53 | 568 | * |
459c51ad DD |
569 | * This functions looks for ACK packets and tries to match them with the |
570 | * frames in the tx queue. If a match is found the frame will be dequeued and | |
571 | * the upper layers is informed about the successful transmission. If | |
572 | * mac80211 queues have been stopped and the number of frames still to be | |
573 | * transmitted is low the queues will be opened again. | |
e85d0918 | 574 | * |
459c51ad | 575 | * Returns 1 if the frame was an ACK, 0 if it was ignored. |
e85d0918 | 576 | */ |
459c51ad DD |
577 | static int filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr, |
578 | struct ieee80211_rx_status *stats) | |
e85d0918 | 579 | { |
459c51ad DD |
580 | u16 fc = le16_to_cpu(rx_hdr->frame_control); |
581 | struct sk_buff *skb; | |
582 | struct sk_buff_head *q; | |
583 | unsigned long flags; | |
e85d0918 | 584 | |
459c51ad DD |
585 | if ((fc & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) != |
586 | (IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK)) | |
e85d0918 | 587 | return 0; |
e85d0918 | 588 | |
459c51ad DD |
589 | q = &zd_hw_mac(hw)->ack_wait_queue; |
590 | spin_lock_irqsave(&q->lock, flags); | |
591 | for (skb = q->next; skb != (struct sk_buff *)q; skb = skb->next) { | |
592 | struct ieee80211_hdr *tx_hdr; | |
593 | ||
594 | tx_hdr = (struct ieee80211_hdr *)skb->data; | |
595 | if (likely(!compare_ether_addr(tx_hdr->addr2, rx_hdr->addr1))) | |
596 | { | |
5078ed50 JB |
597 | struct ieee80211_tx_status status; |
598 | ||
599 | memset(&status, 0, sizeof(status)); | |
459c51ad DD |
600 | status.flags = IEEE80211_TX_STATUS_ACK; |
601 | status.ack_signal = stats->ssi; | |
602 | __skb_unlink(skb, q); | |
603 | tx_status(hw, skb, &status, 1); | |
604 | goto out; | |
605 | } | |
606 | } | |
607 | out: | |
608 | spin_unlock_irqrestore(&q->lock, flags); | |
609 | return 1; | |
e85d0918 DD |
610 | } |
611 | ||
459c51ad | 612 | int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length) |
e85d0918 | 613 | { |
459c51ad DD |
614 | struct zd_mac *mac = zd_hw_mac(hw); |
615 | struct ieee80211_rx_status stats; | |
616 | const struct rx_status *status; | |
617 | struct sk_buff *skb; | |
618 | int bad_frame = 0; | |
9081728b MB |
619 | u16 fc; |
620 | bool is_qos, is_4addr, need_padding; | |
8318d78a JB |
621 | int i; |
622 | u8 rate; | |
db888aed | 623 | |
459c51ad DD |
624 | if (length < ZD_PLCP_HEADER_SIZE + 10 /* IEEE80211_1ADDR_LEN */ + |
625 | FCS_LEN + sizeof(struct rx_status)) | |
626 | return -EINVAL; | |
e85d0918 | 627 | |
459c51ad | 628 | memset(&stats, 0, sizeof(stats)); |
e85d0918 | 629 | |
459c51ad DD |
630 | /* Note about pass_failed_fcs and pass_ctrl access below: |
631 | * mac locking intentionally omitted here, as this is the only unlocked | |
632 | * reader and the only writer is configure_filter. Plus, if there were | |
633 | * any races accessing these variables, it wouldn't really matter. | |
634 | * If mac80211 ever provides a way for us to access filter flags | |
635 | * from outside configure_filter, we could improve on this. Also, this | |
636 | * situation may change once we implement some kind of DMA-into-skb | |
637 | * RX path. */ | |
e85d0918 | 638 | |
459c51ad DD |
639 | /* Caller has to ensure that length >= sizeof(struct rx_status). */ |
640 | status = (struct rx_status *) | |
937a049d | 641 | (buffer + (length - sizeof(struct rx_status))); |
e85d0918 | 642 | if (status->frame_status & ZD_RX_ERROR) { |
459c51ad DD |
643 | if (mac->pass_failed_fcs && |
644 | (status->frame_status & ZD_RX_CRC32_ERROR)) { | |
645 | stats.flag |= RX_FLAG_FAILED_FCS_CRC; | |
646 | bad_frame = 1; | |
647 | } else { | |
648 | return -EINVAL; | |
22d3405f | 649 | } |
e85d0918 | 650 | } |
22d3405f | 651 | |
8318d78a JB |
652 | stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq; |
653 | stats.band = IEEE80211_BAND_2GHZ; | |
459c51ad DD |
654 | stats.ssi = status->signal_strength; |
655 | stats.signal = zd_rx_qual_percent(buffer, | |
e85d0918 DD |
656 | length - sizeof(struct rx_status), |
657 | status); | |
8318d78a JB |
658 | |
659 | rate = zd_rx_rate(buffer, status); | |
660 | ||
661 | /* todo: return index in the big switches in zd_rx_rate instead */ | |
662 | for (i = 0; i < mac->band.n_bitrates; i++) | |
663 | if (rate == mac->band.bitrates[i].hw_value) | |
664 | stats.rate_idx = i; | |
459c51ad DD |
665 | |
666 | length -= ZD_PLCP_HEADER_SIZE + sizeof(struct rx_status); | |
667 | buffer += ZD_PLCP_HEADER_SIZE; | |
668 | ||
669 | /* Except for bad frames, filter each frame to see if it is an ACK, in | |
670 | * which case our internal TX tracking is updated. Normally we then | |
671 | * bail here as there's no need to pass ACKs on up to the stack, but | |
672 | * there is also the case where the stack has requested us to pass | |
673 | * control frames on up (pass_ctrl) which we must consider. */ | |
674 | if (!bad_frame && | |
675 | filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) | |
676 | && !mac->pass_ctrl) | |
677 | return 0; | |
e85d0918 | 678 | |
9081728b MB |
679 | fc = le16_to_cpu(*((__le16 *) buffer)); |
680 | ||
681 | is_qos = ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && | |
682 | ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_QOS_DATA); | |
683 | is_4addr = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
684 | (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS); | |
685 | need_padding = is_qos ^ is_4addr; | |
686 | ||
687 | skb = dev_alloc_skb(length + (need_padding ? 2 : 0)); | |
459c51ad DD |
688 | if (skb == NULL) |
689 | return -ENOMEM; | |
9081728b MB |
690 | if (need_padding) { |
691 | /* Make sure the the payload data is 4 byte aligned. */ | |
692 | skb_reserve(skb, 2); | |
693 | } | |
694 | ||
459c51ad DD |
695 | memcpy(skb_put(skb, length), buffer, length); |
696 | ||
697 | ieee80211_rx_irqsafe(hw, skb, &stats); | |
e85d0918 DD |
698 | return 0; |
699 | } | |
700 | ||
459c51ad DD |
701 | static int zd_op_add_interface(struct ieee80211_hw *hw, |
702 | struct ieee80211_if_init_conf *conf) | |
e85d0918 | 703 | { |
459c51ad | 704 | struct zd_mac *mac = zd_hw_mac(hw); |
e85d0918 | 705 | |
459c51ad DD |
706 | /* using IEEE80211_IF_TYPE_INVALID to indicate no mode selected */ |
707 | if (mac->type != IEEE80211_IF_TYPE_INVALID) | |
708 | return -EOPNOTSUPP; | |
e85d0918 | 709 | |
459c51ad DD |
710 | switch (conf->type) { |
711 | case IEEE80211_IF_TYPE_MNTR: | |
712 | case IEEE80211_IF_TYPE_STA: | |
713 | mac->type = conf->type; | |
714 | break; | |
715 | default: | |
716 | return -EOPNOTSUPP; | |
4d1feabc | 717 | } |
e85d0918 | 718 | |
459c51ad DD |
719 | return zd_write_mac_addr(&mac->chip, conf->mac_addr); |
720 | } | |
e85d0918 | 721 | |
459c51ad DD |
722 | static void zd_op_remove_interface(struct ieee80211_hw *hw, |
723 | struct ieee80211_if_init_conf *conf) | |
724 | { | |
725 | struct zd_mac *mac = zd_hw_mac(hw); | |
726 | mac->type = IEEE80211_IF_TYPE_INVALID; | |
727 | zd_write_mac_addr(&mac->chip, NULL); | |
728 | } | |
93137943 | 729 | |
459c51ad DD |
730 | static int zd_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) |
731 | { | |
732 | struct zd_mac *mac = zd_hw_mac(hw); | |
8318d78a | 733 | return zd_chip_set_channel(&mac->chip, conf->channel->hw_value); |
459c51ad | 734 | } |
db888aed | 735 | |
32bfd35d JB |
736 | static int zd_op_config_interface(struct ieee80211_hw *hw, |
737 | struct ieee80211_vif *vif, | |
459c51ad DD |
738 | struct ieee80211_if_conf *conf) |
739 | { | |
740 | struct zd_mac *mac = zd_hw_mac(hw); | |
e85d0918 | 741 | |
459c51ad DD |
742 | spin_lock_irq(&mac->lock); |
743 | mac->associated = is_valid_ether_addr(conf->bssid); | |
744 | spin_unlock_irq(&mac->lock); | |
e85d0918 | 745 | |
459c51ad DD |
746 | /* TODO: do hardware bssid filtering */ |
747 | return 0; | |
4d1feabc UK |
748 | } |
749 | ||
459c51ad | 750 | static void set_multicast_hash_handler(struct work_struct *work) |
4d1feabc | 751 | { |
459c51ad DD |
752 | struct zd_mac *mac = |
753 | container_of(work, struct zd_mac, set_multicast_hash_work); | |
754 | struct zd_mc_hash hash; | |
4d1feabc | 755 | |
459c51ad DD |
756 | spin_lock_irq(&mac->lock); |
757 | hash = mac->multicast_hash; | |
758 | spin_unlock_irq(&mac->lock); | |
4d1feabc | 759 | |
459c51ad | 760 | zd_chip_set_multicast_hash(&mac->chip, &hash); |
e85d0918 DD |
761 | } |
762 | ||
459c51ad | 763 | static void set_rx_filter_handler(struct work_struct *work) |
e85d0918 | 764 | { |
459c51ad DD |
765 | struct zd_mac *mac = |
766 | container_of(work, struct zd_mac, set_rx_filter_work); | |
767 | int r; | |
768 | ||
769 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
770 | r = set_rx_filter(mac); | |
771 | if (r) | |
772 | dev_err(zd_mac_dev(mac), "set_rx_filter_handler error %d\n", r); | |
e85d0918 DD |
773 | } |
774 | ||
459c51ad DD |
775 | #define SUPPORTED_FIF_FLAGS \ |
776 | (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \ | |
777 | FIF_OTHER_BSS) | |
778 | static void zd_op_configure_filter(struct ieee80211_hw *hw, | |
779 | unsigned int changed_flags, | |
780 | unsigned int *new_flags, | |
781 | int mc_count, struct dev_mc_list *mclist) | |
e85d0918 | 782 | { |
459c51ad DD |
783 | struct zd_mc_hash hash; |
784 | struct zd_mac *mac = zd_hw_mac(hw); | |
785 | unsigned long flags; | |
786 | int i; | |
e85d0918 | 787 | |
459c51ad DD |
788 | /* Only deal with supported flags */ |
789 | changed_flags &= SUPPORTED_FIF_FLAGS; | |
790 | *new_flags &= SUPPORTED_FIF_FLAGS; | |
791 | ||
792 | /* changed_flags is always populated but this driver | |
793 | * doesn't support all FIF flags so its possible we don't | |
794 | * need to do anything */ | |
795 | if (!changed_flags) | |
796 | return; | |
797 | ||
798 | if (*new_flags & (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)) { | |
799 | zd_mc_add_all(&hash); | |
800 | } else { | |
801 | DECLARE_MAC_BUF(macbuf); | |
802 | ||
803 | zd_mc_clear(&hash); | |
804 | for (i = 0; i < mc_count; i++) { | |
805 | if (!mclist) | |
806 | break; | |
807 | dev_dbg_f(zd_mac_dev(mac), "mc addr %s\n", | |
808 | print_mac(macbuf, mclist->dmi_addr)); | |
809 | zd_mc_add_addr(&hash, mclist->dmi_addr); | |
810 | mclist = mclist->next; | |
811 | } | |
e85d0918 | 812 | } |
459c51ad DD |
813 | |
814 | spin_lock_irqsave(&mac->lock, flags); | |
815 | mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL); | |
816 | mac->pass_ctrl = !!(*new_flags & FIF_CONTROL); | |
817 | mac->multicast_hash = hash; | |
818 | spin_unlock_irqrestore(&mac->lock, flags); | |
819 | queue_work(zd_workqueue, &mac->set_multicast_hash_work); | |
820 | ||
821 | if (changed_flags & FIF_CONTROL) | |
822 | queue_work(zd_workqueue, &mac->set_rx_filter_work); | |
823 | ||
824 | /* no handling required for FIF_OTHER_BSS as we don't currently | |
825 | * do BSSID filtering */ | |
826 | /* FIXME: in future it would be nice to enable the probe response | |
827 | * filter (so that the driver doesn't see them) until | |
828 | * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd | |
829 | * have to schedule work to enable prbresp reception, which might | |
830 | * happen too late. For now we'll just listen and forward them all the | |
831 | * time. */ | |
e85d0918 DD |
832 | } |
833 | ||
459c51ad | 834 | static void set_rts_cts_work(struct work_struct *work) |
e85d0918 | 835 | { |
459c51ad DD |
836 | struct zd_mac *mac = |
837 | container_of(work, struct zd_mac, set_rts_cts_work); | |
838 | unsigned long flags; | |
839 | unsigned int short_preamble; | |
840 | ||
841 | mutex_lock(&mac->chip.mutex); | |
842 | ||
843 | spin_lock_irqsave(&mac->lock, flags); | |
844 | mac->updating_rts_rate = 0; | |
845 | short_preamble = mac->short_preamble; | |
846 | spin_unlock_irqrestore(&mac->lock, flags); | |
847 | ||
848 | zd_chip_set_rts_cts_rate_locked(&mac->chip, short_preamble); | |
849 | mutex_unlock(&mac->chip.mutex); | |
e85d0918 DD |
850 | } |
851 | ||
471b3efd JB |
852 | static void zd_op_bss_info_changed(struct ieee80211_hw *hw, |
853 | struct ieee80211_vif *vif, | |
854 | struct ieee80211_bss_conf *bss_conf, | |
855 | u32 changes) | |
e85d0918 | 856 | { |
459c51ad DD |
857 | struct zd_mac *mac = zd_hw_mac(hw); |
858 | unsigned long flags; | |
859 | ||
860 | dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes); | |
861 | ||
471b3efd | 862 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
459c51ad | 863 | spin_lock_irqsave(&mac->lock, flags); |
471b3efd | 864 | mac->short_preamble = bss_conf->use_short_preamble; |
459c51ad DD |
865 | if (!mac->updating_rts_rate) { |
866 | mac->updating_rts_rate = 1; | |
867 | /* FIXME: should disable TX here, until work has | |
868 | * completed and RTS_CTS reg is updated */ | |
869 | queue_work(zd_workqueue, &mac->set_rts_cts_work); | |
870 | } | |
871 | spin_unlock_irqrestore(&mac->lock, flags); | |
872 | } | |
e85d0918 DD |
873 | } |
874 | ||
459c51ad DD |
875 | static const struct ieee80211_ops zd_ops = { |
876 | .tx = zd_op_tx, | |
877 | .start = zd_op_start, | |
878 | .stop = zd_op_stop, | |
879 | .add_interface = zd_op_add_interface, | |
880 | .remove_interface = zd_op_remove_interface, | |
881 | .config = zd_op_config, | |
882 | .config_interface = zd_op_config_interface, | |
883 | .configure_filter = zd_op_configure_filter, | |
471b3efd | 884 | .bss_info_changed = zd_op_bss_info_changed, |
459c51ad DD |
885 | }; |
886 | ||
887 | struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf) | |
e85d0918 | 888 | { |
459c51ad DD |
889 | struct zd_mac *mac; |
890 | struct ieee80211_hw *hw; | |
e85d0918 | 891 | |
459c51ad DD |
892 | hw = ieee80211_alloc_hw(sizeof(struct zd_mac), &zd_ops); |
893 | if (!hw) { | |
894 | dev_dbg_f(&intf->dev, "out of memory\n"); | |
895 | return NULL; | |
db888aed | 896 | } |
459c51ad DD |
897 | |
898 | mac = zd_hw_mac(hw); | |
899 | ||
900 | memset(mac, 0, sizeof(*mac)); | |
901 | spin_lock_init(&mac->lock); | |
902 | mac->hw = hw; | |
903 | ||
904 | mac->type = IEEE80211_IF_TYPE_INVALID; | |
905 | ||
906 | memcpy(mac->channels, zd_channels, sizeof(zd_channels)); | |
907 | memcpy(mac->rates, zd_rates, sizeof(zd_rates)); | |
8318d78a JB |
908 | mac->band.n_bitrates = ARRAY_SIZE(zd_rates); |
909 | mac->band.bitrates = mac->rates; | |
910 | mac->band.n_channels = ARRAY_SIZE(zd_channels); | |
911 | mac->band.channels = mac->channels; | |
912 | ||
913 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &mac->band; | |
914 | ||
915 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS; | |
459c51ad DD |
916 | hw->max_rssi = 100; |
917 | hw->max_signal = 100; | |
918 | ||
919 | hw->queues = 1; | |
920 | hw->extra_tx_headroom = sizeof(struct zd_ctrlset); | |
921 | ||
922 | skb_queue_head_init(&mac->ack_wait_queue); | |
923 | ||
459c51ad DD |
924 | zd_chip_init(&mac->chip, hw, intf); |
925 | housekeeping_init(mac); | |
926 | INIT_WORK(&mac->set_multicast_hash_work, set_multicast_hash_handler); | |
927 | INIT_WORK(&mac->set_rts_cts_work, set_rts_cts_work); | |
928 | INIT_WORK(&mac->set_rx_filter_work, set_rx_filter_handler); | |
929 | ||
930 | SET_IEEE80211_DEV(hw, &intf->dev); | |
931 | return hw; | |
e85d0918 DD |
932 | } |
933 | ||
583afd1e UK |
934 | #define LINK_LED_WORK_DELAY HZ |
935 | ||
c4028958 | 936 | static void link_led_handler(struct work_struct *work) |
583afd1e | 937 | { |
c4028958 DH |
938 | struct zd_mac *mac = |
939 | container_of(work, struct zd_mac, housekeeping.link_led_work.work); | |
583afd1e | 940 | struct zd_chip *chip = &mac->chip; |
583afd1e UK |
941 | int is_associated; |
942 | int r; | |
943 | ||
944 | spin_lock_irq(&mac->lock); | |
459c51ad | 945 | is_associated = mac->associated; |
583afd1e UK |
946 | spin_unlock_irq(&mac->lock); |
947 | ||
948 | r = zd_chip_control_leds(chip, | |
949 | is_associated ? LED_ASSOCIATED : LED_SCANNING); | |
950 | if (r) | |
459c51ad | 951 | dev_dbg_f(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r); |
583afd1e UK |
952 | |
953 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
954 | LINK_LED_WORK_DELAY); | |
955 | } | |
956 | ||
957 | static void housekeeping_init(struct zd_mac *mac) | |
958 | { | |
c4028958 | 959 | INIT_DELAYED_WORK(&mac->housekeeping.link_led_work, link_led_handler); |
583afd1e UK |
960 | } |
961 | ||
962 | static void housekeeping_enable(struct zd_mac *mac) | |
963 | { | |
964 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
965 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
966 | 0); | |
967 | } | |
968 | ||
969 | static void housekeeping_disable(struct zd_mac *mac) | |
970 | { | |
971 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
972 | cancel_rearming_delayed_workqueue(zd_workqueue, | |
973 | &mac->housekeeping.link_led_work); | |
974 | zd_chip_control_leds(&mac->chip, LED_OFF); | |
975 | } |