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 | static void zd_op_stop(struct ieee80211_hw *hw) |
228 | { | |
229 | struct zd_mac *mac = zd_hw_mac(hw); | |
230 | struct zd_chip *chip = &mac->chip; | |
231 | struct sk_buff *skb; | |
232 | struct sk_buff_head *ack_wait_queue = &mac->ack_wait_queue; | |
c9a4b35d | 233 | |
459c51ad | 234 | /* The order here deliberately is a little different from the open() |
e85d0918 | 235 | * method, since we need to make sure there is no opportunity for RX |
459c51ad | 236 | * frames to be processed by mac80211 after we have stopped it. |
e85d0918 DD |
237 | */ |
238 | ||
459c51ad | 239 | zd_chip_disable_rxtx(chip); |
583afd1e | 240 | housekeeping_disable(mac); |
b1382ede | 241 | flush_workqueue(zd_workqueue); |
b1382ede | 242 | |
e85d0918 DD |
243 | zd_chip_disable_hwint(chip); |
244 | zd_chip_switch_radio_off(chip); | |
245 | zd_chip_disable_int(chip); | |
246 | ||
e85d0918 | 247 | |
459c51ad | 248 | while ((skb = skb_dequeue(ack_wait_queue))) |
e039fa4a | 249 | dev_kfree_skb_any(skb); |
e85d0918 DD |
250 | } |
251 | ||
459c51ad DD |
252 | /** |
253 | * tx_status - reports tx status of a packet if required | |
254 | * @hw - a &struct ieee80211_hw pointer | |
255 | * @skb - a sk-buffer | |
e039fa4a JB |
256 | * @flags: extra flags to set in the TX status info |
257 | * @ackssi: ACK signal strength | |
459c51ad DD |
258 | * @success - True for successfull transmission of the frame |
259 | * | |
260 | * This information calls ieee80211_tx_status_irqsafe() if required by the | |
261 | * control information. It copies the control information into the status | |
262 | * information. | |
263 | * | |
264 | * If no status information has been requested, the skb is freed. | |
265 | */ | |
266 | static void tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, | |
e039fa4a | 267 | u32 flags, int ackssi, bool success) |
b1382ede | 268 | { |
e039fa4a JB |
269 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
270 | ||
271 | memset(&info->status, 0, sizeof(info->status)); | |
b1382ede | 272 | |
459c51ad | 273 | if (!success) |
e039fa4a JB |
274 | info->status.excessive_retries = 1; |
275 | info->flags |= flags; | |
276 | info->status.ack_signal = ackssi; | |
277 | ieee80211_tx_status_irqsafe(hw, skb); | |
b1382ede DD |
278 | } |
279 | ||
459c51ad DD |
280 | /** |
281 | * zd_mac_tx_failed - callback for failed frames | |
282 | * @dev: the mac80211 wireless device | |
283 | * | |
284 | * This function is called if a frame couldn't be succesfully be | |
285 | * transferred. The first frame from the tx queue, will be selected and | |
286 | * reported as error to the upper layers. | |
287 | */ | |
288 | void zd_mac_tx_failed(struct ieee80211_hw *hw) | |
b1382ede | 289 | { |
459c51ad DD |
290 | struct sk_buff_head *q = &zd_hw_mac(hw)->ack_wait_queue; |
291 | struct sk_buff *skb; | |
b1382ede | 292 | |
459c51ad DD |
293 | skb = skb_dequeue(q); |
294 | if (skb == NULL) | |
295 | return; | |
5078ed50 | 296 | |
e039fa4a | 297 | tx_status(hw, skb, 0, 0, 0); |
b1382ede DD |
298 | } |
299 | ||
459c51ad DD |
300 | /** |
301 | * zd_mac_tx_to_dev - callback for USB layer | |
302 | * @skb: a &sk_buff pointer | |
303 | * @error: error value, 0 if transmission successful | |
304 | * | |
305 | * Informs the MAC layer that the frame has successfully transferred to the | |
306 | * device. If an ACK is required and the transfer to the device has been | |
307 | * successful, the packets are put on the @ack_wait_queue with | |
308 | * the control set removed. | |
309 | */ | |
310 | void zd_mac_tx_to_dev(struct sk_buff *skb, int error) | |
311 | { | |
e039fa4a JB |
312 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
313 | struct ieee80211_hw *hw = info->driver_data[0]; | |
b1382ede | 314 | |
e039fa4a JB |
315 | skb_pull(skb, sizeof(struct zd_ctrlset)); |
316 | if (unlikely(error || | |
317 | (info->flags & IEEE80211_TX_CTL_NO_ACK))) { | |
318 | tx_status(hw, skb, 0, 0, !error); | |
459c51ad | 319 | } else { |
e039fa4a JB |
320 | struct sk_buff_head *q = |
321 | &zd_hw_mac(hw)->ack_wait_queue; | |
322 | ||
323 | skb_queue_tail(q, skb); | |
324 | while (skb_queue_len(q) > ZD_MAC_MAX_ACK_WAITERS) | |
325 | zd_mac_tx_failed(hw); | |
e85d0918 | 326 | } |
e85d0918 DD |
327 | } |
328 | ||
b1cd8416 | 329 | static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length) |
e85d0918 | 330 | { |
64f222cc | 331 | /* ZD_PURE_RATE() must be used to remove the modulation type flag of |
459c51ad DD |
332 | * the zd-rate values. |
333 | */ | |
e85d0918 | 334 | static const u8 rate_divisor[] = { |
459c51ad DD |
335 | [ZD_PURE_RATE(ZD_CCK_RATE_1M)] = 1, |
336 | [ZD_PURE_RATE(ZD_CCK_RATE_2M)] = 2, | |
337 | /* Bits must be doubled. */ | |
338 | [ZD_PURE_RATE(ZD_CCK_RATE_5_5M)] = 11, | |
339 | [ZD_PURE_RATE(ZD_CCK_RATE_11M)] = 11, | |
340 | [ZD_PURE_RATE(ZD_OFDM_RATE_6M)] = 6, | |
341 | [ZD_PURE_RATE(ZD_OFDM_RATE_9M)] = 9, | |
342 | [ZD_PURE_RATE(ZD_OFDM_RATE_12M)] = 12, | |
343 | [ZD_PURE_RATE(ZD_OFDM_RATE_18M)] = 18, | |
344 | [ZD_PURE_RATE(ZD_OFDM_RATE_24M)] = 24, | |
345 | [ZD_PURE_RATE(ZD_OFDM_RATE_36M)] = 36, | |
346 | [ZD_PURE_RATE(ZD_OFDM_RATE_48M)] = 48, | |
347 | [ZD_PURE_RATE(ZD_OFDM_RATE_54M)] = 54, | |
e85d0918 DD |
348 | }; |
349 | ||
350 | u32 bits = (u32)tx_length * 8; | |
351 | u32 divisor; | |
352 | ||
64f222cc | 353 | divisor = rate_divisor[ZD_PURE_RATE(zd_rate)]; |
e85d0918 DD |
354 | if (divisor == 0) |
355 | return -EINVAL; | |
356 | ||
b1cd8416 DD |
357 | switch (zd_rate) { |
358 | case ZD_CCK_RATE_5_5M: | |
e85d0918 DD |
359 | bits = (2*bits) + 10; /* round up to the next integer */ |
360 | break; | |
b1cd8416 | 361 | case ZD_CCK_RATE_11M: |
e85d0918 DD |
362 | if (service) { |
363 | u32 t = bits % 11; | |
364 | *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
365 | if (0 < t && t <= 3) { | |
366 | *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
367 | } | |
368 | } | |
369 | bits += 10; /* round up to the next integer */ | |
370 | break; | |
371 | } | |
372 | ||
373 | return bits/divisor; | |
374 | } | |
375 | ||
e85d0918 | 376 | static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, |
459c51ad | 377 | struct ieee80211_hdr *header, u32 flags) |
e85d0918 | 378 | { |
e85d0918 | 379 | /* |
b1382ede | 380 | * CONTROL TODO: |
e85d0918 DD |
381 | * - if backoff needed, enable bit 0 |
382 | * - if burst (backoff not needed) disable bit 0 | |
e85d0918 DD |
383 | */ |
384 | ||
385 | cs->control = 0; | |
386 | ||
387 | /* First fragment */ | |
e039fa4a | 388 | if (flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) |
e85d0918 DD |
389 | cs->control |= ZD_CS_NEED_RANDOM_BACKOFF; |
390 | ||
391 | /* Multicast */ | |
392 | if (is_multicast_ether_addr(header->addr1)) | |
393 | cs->control |= ZD_CS_MULTICAST; | |
394 | ||
395 | /* PS-POLL */ | |
85365820 | 396 | if (ieee80211_is_pspoll(header->frame_control)) |
e85d0918 DD |
397 | cs->control |= ZD_CS_PS_POLL_FRAME; |
398 | ||
e039fa4a | 399 | if (flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
b1382ede DD |
400 | cs->control |= ZD_CS_RTS; |
401 | ||
e039fa4a | 402 | if (flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) |
b1382ede | 403 | cs->control |= ZD_CS_SELF_CTS; |
e85d0918 DD |
404 | |
405 | /* FIXME: Management frame? */ | |
406 | } | |
407 | ||
f2cae6c5 | 408 | static int zd_mac_config_beacon(struct ieee80211_hw *hw, struct sk_buff *beacon) |
72e77a8a LCC |
409 | { |
410 | struct zd_mac *mac = zd_hw_mac(hw); | |
f2cae6c5 | 411 | int r; |
72e77a8a LCC |
412 | u32 tmp, j = 0; |
413 | /* 4 more bytes for tail CRC */ | |
414 | u32 full_len = beacon->len + 4; | |
f2cae6c5 DD |
415 | |
416 | r = zd_iowrite32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, 0); | |
417 | if (r < 0) | |
418 | return r; | |
419 | r = zd_ioread32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, &tmp); | |
420 | if (r < 0) | |
421 | return r; | |
422 | ||
72e77a8a | 423 | while (tmp & 0x2) { |
f2cae6c5 DD |
424 | r = zd_ioread32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, &tmp); |
425 | if (r < 0) | |
426 | return r; | |
72e77a8a LCC |
427 | if ((++j % 100) == 0) { |
428 | printk(KERN_ERR "CR_BCN_FIFO_SEMAPHORE not ready\n"); | |
429 | if (j >= 500) { | |
430 | printk(KERN_ERR "Giving up beacon config.\n"); | |
f2cae6c5 | 431 | return -ETIMEDOUT; |
72e77a8a LCC |
432 | } |
433 | } | |
434 | msleep(1); | |
435 | } | |
436 | ||
f2cae6c5 DD |
437 | r = zd_iowrite32(&mac->chip, CR_BCN_FIFO, full_len - 1); |
438 | if (r < 0) | |
439 | return r; | |
440 | if (zd_chip_is_zd1211b(&mac->chip)) { | |
441 | r = zd_iowrite32(&mac->chip, CR_BCN_LENGTH, full_len - 1); | |
442 | if (r < 0) | |
443 | return r; | |
444 | } | |
72e77a8a | 445 | |
f2cae6c5 DD |
446 | for (j = 0 ; j < beacon->len; j++) { |
447 | r = zd_iowrite32(&mac->chip, CR_BCN_FIFO, | |
72e77a8a | 448 | *((u8 *)(beacon->data + j))); |
f2cae6c5 DD |
449 | if (r < 0) |
450 | return r; | |
451 | } | |
72e77a8a | 452 | |
f2cae6c5 DD |
453 | for (j = 0; j < 4; j++) { |
454 | r = zd_iowrite32(&mac->chip, CR_BCN_FIFO, 0x0); | |
455 | if (r < 0) | |
456 | return r; | |
457 | } | |
458 | ||
459 | r = zd_iowrite32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, 1); | |
460 | if (r < 0) | |
461 | return r; | |
72e77a8a | 462 | |
72e77a8a LCC |
463 | /* 802.11b/g 2.4G CCK 1Mb |
464 | * 802.11a, not yet implemented, uses different values (see GPL vendor | |
465 | * driver) | |
466 | */ | |
f2cae6c5 | 467 | return zd_iowrite32(&mac->chip, CR_BCN_PLCP_CFG, 0x00000400 | |
72e77a8a LCC |
468 | (full_len << 19)); |
469 | } | |
470 | ||
e85d0918 | 471 | static int fill_ctrlset(struct zd_mac *mac, |
e039fa4a | 472 | struct sk_buff *skb) |
e85d0918 DD |
473 | { |
474 | int r; | |
459c51ad DD |
475 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
476 | unsigned int frag_len = skb->len + FCS_LEN; | |
e85d0918 | 477 | unsigned int packet_length; |
2e92e6f2 | 478 | struct ieee80211_rate *txrate; |
e85d0918 DD |
479 | struct zd_ctrlset *cs = (struct zd_ctrlset *) |
480 | skb_push(skb, sizeof(struct zd_ctrlset)); | |
e039fa4a | 481 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
e85d0918 | 482 | |
e85d0918 | 483 | ZD_ASSERT(frag_len <= 0xffff); |
e85d0918 | 484 | |
e039fa4a | 485 | txrate = ieee80211_get_tx_rate(mac->hw, info); |
2e92e6f2 JB |
486 | |
487 | cs->modulation = txrate->hw_value; | |
e039fa4a | 488 | if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) |
2e92e6f2 | 489 | cs->modulation = txrate->hw_value_short; |
e85d0918 DD |
490 | |
491 | cs->tx_length = cpu_to_le16(frag_len); | |
492 | ||
e039fa4a | 493 | cs_set_control(mac, cs, hdr, info->flags); |
e85d0918 DD |
494 | |
495 | packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; | |
496 | ZD_ASSERT(packet_length <= 0xffff); | |
497 | /* ZD1211B: Computing the length difference this way, gives us | |
498 | * flexibility to compute the packet length. | |
499 | */ | |
74553aed | 500 | cs->packet_length = cpu_to_le16(zd_chip_is_zd1211b(&mac->chip) ? |
e85d0918 DD |
501 | packet_length - frag_len : packet_length); |
502 | ||
503 | /* | |
504 | * CURRENT LENGTH: | |
505 | * - transmit frame length in microseconds | |
506 | * - seems to be derived from frame length | |
507 | * - see Cal_Us_Service() in zdinlinef.h | |
508 | * - if macp->bTxBurstEnable is enabled, then multiply by 4 | |
509 | * - bTxBurstEnable is never set in the vendor driver | |
510 | * | |
511 | * SERVICE: | |
512 | * - "for PLCP configuration" | |
513 | * - always 0 except in some situations at 802.11b 11M | |
514 | * - see line 53 of zdinlinef.h | |
515 | */ | |
516 | cs->service = 0; | |
64f222cc | 517 | r = zd_calc_tx_length_us(&cs->service, ZD_RATE(cs->modulation), |
e85d0918 DD |
518 | le16_to_cpu(cs->tx_length)); |
519 | if (r < 0) | |
520 | return r; | |
521 | cs->current_length = cpu_to_le16(r); | |
459c51ad | 522 | cs->next_frame_length = 0; |
e85d0918 DD |
523 | |
524 | return 0; | |
525 | } | |
526 | ||
459c51ad DD |
527 | /** |
528 | * zd_op_tx - transmits a network frame to the device | |
529 | * | |
530 | * @dev: mac80211 hardware device | |
531 | * @skb: socket buffer | |
532 | * @control: the control structure | |
533 | * | |
534 | * This function transmit an IEEE 802.11 network frame to the device. The | |
535 | * control block of the skbuff will be initialized. If necessary the incoming | |
536 | * mac80211 queues will be stopped. | |
537 | */ | |
e039fa4a | 538 | static int zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
e85d0918 | 539 | { |
459c51ad | 540 | struct zd_mac *mac = zd_hw_mac(hw); |
e039fa4a | 541 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
459c51ad | 542 | int r; |
e85d0918 | 543 | |
e039fa4a | 544 | r = fill_ctrlset(mac, skb); |
459c51ad DD |
545 | if (r) |
546 | return r; | |
e85d0918 | 547 | |
e039fa4a JB |
548 | info->driver_data[0] = hw; |
549 | ||
459c51ad | 550 | r = zd_usb_tx(&mac->chip.usb, skb); |
e039fa4a | 551 | if (r) |
459c51ad | 552 | return r; |
e85d0918 DD |
553 | return 0; |
554 | } | |
555 | ||
459c51ad DD |
556 | /** |
557 | * filter_ack - filters incoming packets for acknowledgements | |
558 | * @dev: the mac80211 device | |
559 | * @rx_hdr: received header | |
560 | * @stats: the status for the received packet | |
741fec53 | 561 | * |
459c51ad DD |
562 | * This functions looks for ACK packets and tries to match them with the |
563 | * frames in the tx queue. If a match is found the frame will be dequeued and | |
564 | * the upper layers is informed about the successful transmission. If | |
565 | * mac80211 queues have been stopped and the number of frames still to be | |
566 | * transmitted is low the queues will be opened again. | |
e85d0918 | 567 | * |
459c51ad | 568 | * Returns 1 if the frame was an ACK, 0 if it was ignored. |
e85d0918 | 569 | */ |
459c51ad DD |
570 | static int filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr, |
571 | struct ieee80211_rx_status *stats) | |
e85d0918 | 572 | { |
459c51ad DD |
573 | struct sk_buff *skb; |
574 | struct sk_buff_head *q; | |
575 | unsigned long flags; | |
e85d0918 | 576 | |
85365820 | 577 | if (!ieee80211_is_ack(rx_hdr->frame_control)) |
e85d0918 | 578 | return 0; |
e85d0918 | 579 | |
459c51ad DD |
580 | q = &zd_hw_mac(hw)->ack_wait_queue; |
581 | spin_lock_irqsave(&q->lock, flags); | |
582 | for (skb = q->next; skb != (struct sk_buff *)q; skb = skb->next) { | |
583 | struct ieee80211_hdr *tx_hdr; | |
584 | ||
585 | tx_hdr = (struct ieee80211_hdr *)skb->data; | |
586 | if (likely(!compare_ether_addr(tx_hdr->addr2, rx_hdr->addr1))) | |
587 | { | |
459c51ad | 588 | __skb_unlink(skb, q); |
e039fa4a | 589 | tx_status(hw, skb, IEEE80211_TX_STAT_ACK, stats->signal, 1); |
459c51ad DD |
590 | goto out; |
591 | } | |
592 | } | |
593 | out: | |
594 | spin_unlock_irqrestore(&q->lock, flags); | |
595 | return 1; | |
e85d0918 DD |
596 | } |
597 | ||
459c51ad | 598 | int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length) |
e85d0918 | 599 | { |
459c51ad DD |
600 | struct zd_mac *mac = zd_hw_mac(hw); |
601 | struct ieee80211_rx_status stats; | |
602 | const struct rx_status *status; | |
603 | struct sk_buff *skb; | |
604 | int bad_frame = 0; | |
85365820 HH |
605 | __le16 fc; |
606 | int need_padding; | |
8318d78a JB |
607 | int i; |
608 | u8 rate; | |
db888aed | 609 | |
459c51ad DD |
610 | if (length < ZD_PLCP_HEADER_SIZE + 10 /* IEEE80211_1ADDR_LEN */ + |
611 | FCS_LEN + sizeof(struct rx_status)) | |
612 | return -EINVAL; | |
e85d0918 | 613 | |
459c51ad | 614 | memset(&stats, 0, sizeof(stats)); |
e85d0918 | 615 | |
459c51ad DD |
616 | /* Note about pass_failed_fcs and pass_ctrl access below: |
617 | * mac locking intentionally omitted here, as this is the only unlocked | |
618 | * reader and the only writer is configure_filter. Plus, if there were | |
619 | * any races accessing these variables, it wouldn't really matter. | |
620 | * If mac80211 ever provides a way for us to access filter flags | |
621 | * from outside configure_filter, we could improve on this. Also, this | |
622 | * situation may change once we implement some kind of DMA-into-skb | |
623 | * RX path. */ | |
e85d0918 | 624 | |
459c51ad DD |
625 | /* Caller has to ensure that length >= sizeof(struct rx_status). */ |
626 | status = (struct rx_status *) | |
937a049d | 627 | (buffer + (length - sizeof(struct rx_status))); |
e85d0918 | 628 | if (status->frame_status & ZD_RX_ERROR) { |
459c51ad DD |
629 | if (mac->pass_failed_fcs && |
630 | (status->frame_status & ZD_RX_CRC32_ERROR)) { | |
631 | stats.flag |= RX_FLAG_FAILED_FCS_CRC; | |
632 | bad_frame = 1; | |
633 | } else { | |
634 | return -EINVAL; | |
22d3405f | 635 | } |
e85d0918 | 636 | } |
22d3405f | 637 | |
8318d78a JB |
638 | stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq; |
639 | stats.band = IEEE80211_BAND_2GHZ; | |
566bfe5a BR |
640 | stats.signal = status->signal_strength; |
641 | stats.qual = zd_rx_qual_percent(buffer, | |
e85d0918 DD |
642 | length - sizeof(struct rx_status), |
643 | status); | |
8318d78a JB |
644 | |
645 | rate = zd_rx_rate(buffer, status); | |
646 | ||
647 | /* todo: return index in the big switches in zd_rx_rate instead */ | |
648 | for (i = 0; i < mac->band.n_bitrates; i++) | |
649 | if (rate == mac->band.bitrates[i].hw_value) | |
650 | stats.rate_idx = i; | |
459c51ad DD |
651 | |
652 | length -= ZD_PLCP_HEADER_SIZE + sizeof(struct rx_status); | |
653 | buffer += ZD_PLCP_HEADER_SIZE; | |
654 | ||
655 | /* Except for bad frames, filter each frame to see if it is an ACK, in | |
656 | * which case our internal TX tracking is updated. Normally we then | |
657 | * bail here as there's no need to pass ACKs on up to the stack, but | |
658 | * there is also the case where the stack has requested us to pass | |
659 | * control frames on up (pass_ctrl) which we must consider. */ | |
660 | if (!bad_frame && | |
661 | filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) | |
662 | && !mac->pass_ctrl) | |
663 | return 0; | |
e85d0918 | 664 | |
85365820 HH |
665 | fc = *(__le16 *)buffer; |
666 | need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc); | |
9081728b MB |
667 | |
668 | skb = dev_alloc_skb(length + (need_padding ? 2 : 0)); | |
459c51ad DD |
669 | if (skb == NULL) |
670 | return -ENOMEM; | |
9081728b MB |
671 | if (need_padding) { |
672 | /* Make sure the the payload data is 4 byte aligned. */ | |
673 | skb_reserve(skb, 2); | |
674 | } | |
675 | ||
459c51ad DD |
676 | memcpy(skb_put(skb, length), buffer, length); |
677 | ||
678 | ieee80211_rx_irqsafe(hw, skb, &stats); | |
e85d0918 DD |
679 | return 0; |
680 | } | |
681 | ||
459c51ad DD |
682 | static int zd_op_add_interface(struct ieee80211_hw *hw, |
683 | struct ieee80211_if_init_conf *conf) | |
e85d0918 | 684 | { |
459c51ad | 685 | struct zd_mac *mac = zd_hw_mac(hw); |
e85d0918 | 686 | |
459c51ad DD |
687 | /* using IEEE80211_IF_TYPE_INVALID to indicate no mode selected */ |
688 | if (mac->type != IEEE80211_IF_TYPE_INVALID) | |
689 | return -EOPNOTSUPP; | |
e85d0918 | 690 | |
459c51ad DD |
691 | switch (conf->type) { |
692 | case IEEE80211_IF_TYPE_MNTR: | |
72e77a8a | 693 | case IEEE80211_IF_TYPE_MESH_POINT: |
459c51ad | 694 | case IEEE80211_IF_TYPE_STA: |
84e6dc9a | 695 | case IEEE80211_IF_TYPE_IBSS: |
459c51ad DD |
696 | mac->type = conf->type; |
697 | break; | |
698 | default: | |
699 | return -EOPNOTSUPP; | |
4d1feabc | 700 | } |
e85d0918 | 701 | |
459c51ad DD |
702 | return zd_write_mac_addr(&mac->chip, conf->mac_addr); |
703 | } | |
e85d0918 | 704 | |
459c51ad DD |
705 | static void zd_op_remove_interface(struct ieee80211_hw *hw, |
706 | struct ieee80211_if_init_conf *conf) | |
707 | { | |
708 | struct zd_mac *mac = zd_hw_mac(hw); | |
709 | mac->type = IEEE80211_IF_TYPE_INVALID; | |
86229f0c | 710 | zd_set_beacon_interval(&mac->chip, 0); |
459c51ad DD |
711 | zd_write_mac_addr(&mac->chip, NULL); |
712 | } | |
93137943 | 713 | |
459c51ad DD |
714 | static int zd_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) |
715 | { | |
716 | struct zd_mac *mac = zd_hw_mac(hw); | |
8318d78a | 717 | return zd_chip_set_channel(&mac->chip, conf->channel->hw_value); |
459c51ad | 718 | } |
db888aed | 719 | |
32bfd35d JB |
720 | static int zd_op_config_interface(struct ieee80211_hw *hw, |
721 | struct ieee80211_vif *vif, | |
459c51ad DD |
722 | struct ieee80211_if_conf *conf) |
723 | { | |
724 | struct zd_mac *mac = zd_hw_mac(hw); | |
72e77a8a | 725 | int associated; |
f2cae6c5 | 726 | int r; |
72e77a8a | 727 | |
84e6dc9a BR |
728 | if (mac->type == IEEE80211_IF_TYPE_MESH_POINT || |
729 | mac->type == IEEE80211_IF_TYPE_IBSS) { | |
72e77a8a | 730 | associated = true; |
9d139c81 JB |
731 | if (conf->changed & IEEE80211_IFCC_BEACON) { |
732 | struct sk_buff *beacon = ieee80211_beacon_get(hw, vif); | |
733 | ||
734 | if (!beacon) | |
735 | return -ENOMEM; | |
736 | r = zd_mac_config_beacon(hw, beacon); | |
f2cae6c5 DD |
737 | if (r < 0) |
738 | return r; | |
739 | r = zd_set_beacon_interval(&mac->chip, BCN_MODE_IBSS | | |
72e77a8a | 740 | hw->conf.beacon_int); |
f2cae6c5 DD |
741 | if (r < 0) |
742 | return r; | |
9d139c81 | 743 | kfree_skb(beacon); |
72e77a8a LCC |
744 | } |
745 | } else | |
746 | associated = is_valid_ether_addr(conf->bssid); | |
e85d0918 | 747 | |
459c51ad | 748 | spin_lock_irq(&mac->lock); |
72e77a8a | 749 | mac->associated = associated; |
459c51ad | 750 | spin_unlock_irq(&mac->lock); |
e85d0918 | 751 | |
459c51ad DD |
752 | /* TODO: do hardware bssid filtering */ |
753 | return 0; | |
4d1feabc UK |
754 | } |
755 | ||
72e77a8a LCC |
756 | void zd_process_intr(struct work_struct *work) |
757 | { | |
758 | u16 int_status; | |
759 | struct zd_mac *mac = container_of(work, struct zd_mac, process_intr); | |
760 | ||
d63ddcec | 761 | int_status = le16_to_cpu(*(__le16 *)(mac->intr_buffer+4)); |
72e77a8a LCC |
762 | if (int_status & INT_CFG_NEXT_BCN) { |
763 | if (net_ratelimit()) | |
764 | dev_dbg_f(zd_mac_dev(mac), "INT_CFG_NEXT_BCN\n"); | |
765 | } else | |
766 | dev_dbg_f(zd_mac_dev(mac), "Unsupported interrupt\n"); | |
767 | ||
768 | zd_chip_enable_hwint(&mac->chip); | |
769 | } | |
770 | ||
771 | ||
459c51ad | 772 | static void set_multicast_hash_handler(struct work_struct *work) |
4d1feabc | 773 | { |
459c51ad DD |
774 | struct zd_mac *mac = |
775 | container_of(work, struct zd_mac, set_multicast_hash_work); | |
776 | struct zd_mc_hash hash; | |
4d1feabc | 777 | |
459c51ad DD |
778 | spin_lock_irq(&mac->lock); |
779 | hash = mac->multicast_hash; | |
780 | spin_unlock_irq(&mac->lock); | |
4d1feabc | 781 | |
459c51ad | 782 | zd_chip_set_multicast_hash(&mac->chip, &hash); |
e85d0918 DD |
783 | } |
784 | ||
459c51ad | 785 | static void set_rx_filter_handler(struct work_struct *work) |
e85d0918 | 786 | { |
459c51ad DD |
787 | struct zd_mac *mac = |
788 | container_of(work, struct zd_mac, set_rx_filter_work); | |
789 | int r; | |
790 | ||
791 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
792 | r = set_rx_filter(mac); | |
793 | if (r) | |
794 | dev_err(zd_mac_dev(mac), "set_rx_filter_handler error %d\n", r); | |
e85d0918 DD |
795 | } |
796 | ||
459c51ad DD |
797 | #define SUPPORTED_FIF_FLAGS \ |
798 | (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \ | |
2c1a1b12 | 799 | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC) |
459c51ad DD |
800 | static void zd_op_configure_filter(struct ieee80211_hw *hw, |
801 | unsigned int changed_flags, | |
802 | unsigned int *new_flags, | |
803 | int mc_count, struct dev_mc_list *mclist) | |
e85d0918 | 804 | { |
459c51ad DD |
805 | struct zd_mc_hash hash; |
806 | struct zd_mac *mac = zd_hw_mac(hw); | |
807 | unsigned long flags; | |
808 | int i; | |
e85d0918 | 809 | |
459c51ad DD |
810 | /* Only deal with supported flags */ |
811 | changed_flags &= SUPPORTED_FIF_FLAGS; | |
812 | *new_flags &= SUPPORTED_FIF_FLAGS; | |
813 | ||
814 | /* changed_flags is always populated but this driver | |
815 | * doesn't support all FIF flags so its possible we don't | |
816 | * need to do anything */ | |
817 | if (!changed_flags) | |
818 | return; | |
819 | ||
820 | if (*new_flags & (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)) { | |
821 | zd_mc_add_all(&hash); | |
822 | } else { | |
823 | DECLARE_MAC_BUF(macbuf); | |
824 | ||
825 | zd_mc_clear(&hash); | |
826 | for (i = 0; i < mc_count; i++) { | |
827 | if (!mclist) | |
828 | break; | |
829 | dev_dbg_f(zd_mac_dev(mac), "mc addr %s\n", | |
830 | print_mac(macbuf, mclist->dmi_addr)); | |
831 | zd_mc_add_addr(&hash, mclist->dmi_addr); | |
832 | mclist = mclist->next; | |
833 | } | |
e85d0918 | 834 | } |
459c51ad DD |
835 | |
836 | spin_lock_irqsave(&mac->lock, flags); | |
837 | mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL); | |
838 | mac->pass_ctrl = !!(*new_flags & FIF_CONTROL); | |
839 | mac->multicast_hash = hash; | |
840 | spin_unlock_irqrestore(&mac->lock, flags); | |
841 | queue_work(zd_workqueue, &mac->set_multicast_hash_work); | |
842 | ||
843 | if (changed_flags & FIF_CONTROL) | |
844 | queue_work(zd_workqueue, &mac->set_rx_filter_work); | |
845 | ||
846 | /* no handling required for FIF_OTHER_BSS as we don't currently | |
847 | * do BSSID filtering */ | |
848 | /* FIXME: in future it would be nice to enable the probe response | |
849 | * filter (so that the driver doesn't see them) until | |
850 | * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd | |
851 | * have to schedule work to enable prbresp reception, which might | |
852 | * happen too late. For now we'll just listen and forward them all the | |
853 | * time. */ | |
e85d0918 DD |
854 | } |
855 | ||
459c51ad | 856 | static void set_rts_cts_work(struct work_struct *work) |
e85d0918 | 857 | { |
459c51ad DD |
858 | struct zd_mac *mac = |
859 | container_of(work, struct zd_mac, set_rts_cts_work); | |
860 | unsigned long flags; | |
861 | unsigned int short_preamble; | |
862 | ||
863 | mutex_lock(&mac->chip.mutex); | |
864 | ||
865 | spin_lock_irqsave(&mac->lock, flags); | |
866 | mac->updating_rts_rate = 0; | |
867 | short_preamble = mac->short_preamble; | |
868 | spin_unlock_irqrestore(&mac->lock, flags); | |
869 | ||
870 | zd_chip_set_rts_cts_rate_locked(&mac->chip, short_preamble); | |
871 | mutex_unlock(&mac->chip.mutex); | |
e85d0918 DD |
872 | } |
873 | ||
471b3efd JB |
874 | static void zd_op_bss_info_changed(struct ieee80211_hw *hw, |
875 | struct ieee80211_vif *vif, | |
876 | struct ieee80211_bss_conf *bss_conf, | |
877 | u32 changes) | |
e85d0918 | 878 | { |
459c51ad DD |
879 | struct zd_mac *mac = zd_hw_mac(hw); |
880 | unsigned long flags; | |
881 | ||
882 | dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes); | |
883 | ||
471b3efd | 884 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
459c51ad | 885 | spin_lock_irqsave(&mac->lock, flags); |
471b3efd | 886 | mac->short_preamble = bss_conf->use_short_preamble; |
459c51ad DD |
887 | if (!mac->updating_rts_rate) { |
888 | mac->updating_rts_rate = 1; | |
889 | /* FIXME: should disable TX here, until work has | |
890 | * completed and RTS_CTS reg is updated */ | |
891 | queue_work(zd_workqueue, &mac->set_rts_cts_work); | |
892 | } | |
893 | spin_unlock_irqrestore(&mac->lock, flags); | |
894 | } | |
e85d0918 DD |
895 | } |
896 | ||
459c51ad DD |
897 | static const struct ieee80211_ops zd_ops = { |
898 | .tx = zd_op_tx, | |
899 | .start = zd_op_start, | |
900 | .stop = zd_op_stop, | |
901 | .add_interface = zd_op_add_interface, | |
902 | .remove_interface = zd_op_remove_interface, | |
903 | .config = zd_op_config, | |
904 | .config_interface = zd_op_config_interface, | |
905 | .configure_filter = zd_op_configure_filter, | |
471b3efd | 906 | .bss_info_changed = zd_op_bss_info_changed, |
459c51ad DD |
907 | }; |
908 | ||
909 | struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf) | |
e85d0918 | 910 | { |
459c51ad DD |
911 | struct zd_mac *mac; |
912 | struct ieee80211_hw *hw; | |
e85d0918 | 913 | |
459c51ad DD |
914 | hw = ieee80211_alloc_hw(sizeof(struct zd_mac), &zd_ops); |
915 | if (!hw) { | |
916 | dev_dbg_f(&intf->dev, "out of memory\n"); | |
917 | return NULL; | |
db888aed | 918 | } |
459c51ad DD |
919 | |
920 | mac = zd_hw_mac(hw); | |
921 | ||
922 | memset(mac, 0, sizeof(*mac)); | |
923 | spin_lock_init(&mac->lock); | |
924 | mac->hw = hw; | |
925 | ||
926 | mac->type = IEEE80211_IF_TYPE_INVALID; | |
927 | ||
928 | memcpy(mac->channels, zd_channels, sizeof(zd_channels)); | |
929 | memcpy(mac->rates, zd_rates, sizeof(zd_rates)); | |
8318d78a JB |
930 | mac->band.n_bitrates = ARRAY_SIZE(zd_rates); |
931 | mac->band.bitrates = mac->rates; | |
932 | mac->band.n_channels = ARRAY_SIZE(zd_channels); | |
933 | mac->band.channels = mac->channels; | |
934 | ||
935 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &mac->band; | |
936 | ||
72e77a8a | 937 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
566bfe5a | 938 | IEEE80211_HW_SIGNAL_DB; |
459c51ad | 939 | |
566bfe5a | 940 | hw->max_signal = 100; |
459c51ad DD |
941 | hw->queues = 1; |
942 | hw->extra_tx_headroom = sizeof(struct zd_ctrlset); | |
943 | ||
944 | skb_queue_head_init(&mac->ack_wait_queue); | |
945 | ||
459c51ad DD |
946 | zd_chip_init(&mac->chip, hw, intf); |
947 | housekeeping_init(mac); | |
948 | INIT_WORK(&mac->set_multicast_hash_work, set_multicast_hash_handler); | |
949 | INIT_WORK(&mac->set_rts_cts_work, set_rts_cts_work); | |
950 | INIT_WORK(&mac->set_rx_filter_work, set_rx_filter_handler); | |
72e77a8a | 951 | INIT_WORK(&mac->process_intr, zd_process_intr); |
459c51ad DD |
952 | |
953 | SET_IEEE80211_DEV(hw, &intf->dev); | |
954 | return hw; | |
e85d0918 DD |
955 | } |
956 | ||
583afd1e UK |
957 | #define LINK_LED_WORK_DELAY HZ |
958 | ||
c4028958 | 959 | static void link_led_handler(struct work_struct *work) |
583afd1e | 960 | { |
c4028958 DH |
961 | struct zd_mac *mac = |
962 | container_of(work, struct zd_mac, housekeeping.link_led_work.work); | |
583afd1e | 963 | struct zd_chip *chip = &mac->chip; |
583afd1e UK |
964 | int is_associated; |
965 | int r; | |
966 | ||
967 | spin_lock_irq(&mac->lock); | |
459c51ad | 968 | is_associated = mac->associated; |
583afd1e UK |
969 | spin_unlock_irq(&mac->lock); |
970 | ||
971 | r = zd_chip_control_leds(chip, | |
972 | is_associated ? LED_ASSOCIATED : LED_SCANNING); | |
973 | if (r) | |
459c51ad | 974 | dev_dbg_f(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r); |
583afd1e UK |
975 | |
976 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
977 | LINK_LED_WORK_DELAY); | |
978 | } | |
979 | ||
980 | static void housekeeping_init(struct zd_mac *mac) | |
981 | { | |
c4028958 | 982 | INIT_DELAYED_WORK(&mac->housekeeping.link_led_work, link_led_handler); |
583afd1e UK |
983 | } |
984 | ||
985 | static void housekeeping_enable(struct zd_mac *mac) | |
986 | { | |
987 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
988 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
989 | 0); | |
990 | } | |
991 | ||
992 | static void housekeeping_disable(struct zd_mac *mac) | |
993 | { | |
994 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
995 | cancel_rearming_delayed_workqueue(zd_workqueue, | |
996 | &mac->housekeeping.link_led_work); | |
997 | zd_chip_control_leds(&mac->chip, LED_OFF); | |
998 | } |