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be663ab6 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
5 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | *****************************************************************************/ | |
28 | ||
29 | #include <linux/kernel.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/etherdevice.h> | |
32 | #include <linux/sched.h> | |
33 | #include <linux/slab.h> | |
0cdc2136 SG |
34 | #include <linux/types.h> |
35 | #include <linux/lockdep.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/pci.h> | |
38 | #include <linux/dma-mapping.h> | |
39 | #include <linux/delay.h> | |
40 | #include <linux/skbuff.h> | |
be663ab6 WYG |
41 | #include <net/mac80211.h> |
42 | ||
98613be0 | 43 | #include "common.h" |
be663ab6 | 44 | |
17d4eca6 SG |
45 | int |
46 | _il_poll_bit(struct il_priv *il, u32 addr, u32 bits, u32 mask, int timeout) | |
47 | { | |
48 | const int interval = 10; /* microseconds */ | |
49 | int t = 0; | |
50 | ||
51 | do { | |
52 | if ((_il_rd(il, addr) & mask) == (bits & mask)) | |
53 | return t; | |
54 | udelay(interval); | |
55 | t += interval; | |
56 | } while (t < timeout); | |
57 | ||
58 | return -ETIMEDOUT; | |
59 | } | |
60 | EXPORT_SYMBOL(_il_poll_bit); | |
61 | ||
62 | void | |
63 | il_set_bit(struct il_priv *p, u32 r, u32 m) | |
64 | { | |
65 | unsigned long reg_flags; | |
66 | ||
67 | spin_lock_irqsave(&p->reg_lock, reg_flags); | |
68 | _il_set_bit(p, r, m); | |
69 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); | |
70 | } | |
71 | EXPORT_SYMBOL(il_set_bit); | |
72 | ||
73 | void | |
74 | il_clear_bit(struct il_priv *p, u32 r, u32 m) | |
75 | { | |
76 | unsigned long reg_flags; | |
77 | ||
78 | spin_lock_irqsave(&p->reg_lock, reg_flags); | |
79 | _il_clear_bit(p, r, m); | |
80 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); | |
81 | } | |
82 | EXPORT_SYMBOL(il_clear_bit); | |
83 | ||
1e0f32a4 | 84 | bool |
17d4eca6 SG |
85 | _il_grab_nic_access(struct il_priv *il) |
86 | { | |
87 | int ret; | |
88 | u32 val; | |
89 | ||
90 | /* this bit wakes up the NIC */ | |
91 | _il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
92 | ||
93 | /* | |
94 | * These bits say the device is running, and should keep running for | |
95 | * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), | |
96 | * but they do not indicate that embedded SRAM is restored yet; | |
97 | * 3945 and 4965 have volatile SRAM, and must save/restore contents | |
98 | * to/from host DRAM when sleeping/waking for power-saving. | |
99 | * Each direction takes approximately 1/4 millisecond; with this | |
100 | * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a | |
101 | * series of register accesses are expected (e.g. reading Event Log), | |
102 | * to keep device from sleeping. | |
103 | * | |
104 | * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that | |
105 | * SRAM is okay/restored. We don't check that here because this call | |
106 | * is just for hardware register access; but GP1 MAC_SLEEP check is a | |
107 | * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). | |
108 | * | |
109 | */ | |
110 | ret = | |
111 | _il_poll_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, | |
112 | (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | | |
113 | CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); | |
b6603036 | 114 | if (unlikely(ret < 0)) { |
17d4eca6 | 115 | val = _il_rd(il, CSR_GP_CNTRL); |
b6603036 SG |
116 | WARN_ONCE(1, "Timeout waiting for ucode processor access " |
117 | "(CSR_GP_CNTRL 0x%08x)\n", val); | |
17d4eca6 | 118 | _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); |
1e0f32a4 | 119 | return false; |
17d4eca6 SG |
120 | } |
121 | ||
1e0f32a4 | 122 | return true; |
17d4eca6 SG |
123 | } |
124 | EXPORT_SYMBOL_GPL(_il_grab_nic_access); | |
125 | ||
126 | int | |
127 | il_poll_bit(struct il_priv *il, u32 addr, u32 mask, int timeout) | |
128 | { | |
129 | const int interval = 10; /* microseconds */ | |
130 | int t = 0; | |
131 | ||
132 | do { | |
133 | if ((il_rd(il, addr) & mask) == mask) | |
134 | return t; | |
135 | udelay(interval); | |
136 | t += interval; | |
137 | } while (t < timeout); | |
138 | ||
139 | return -ETIMEDOUT; | |
140 | } | |
141 | EXPORT_SYMBOL(il_poll_bit); | |
142 | ||
143 | u32 | |
144 | il_rd_prph(struct il_priv *il, u32 reg) | |
145 | { | |
146 | unsigned long reg_flags; | |
147 | u32 val; | |
148 | ||
149 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
150 | _il_grab_nic_access(il); | |
151 | val = _il_rd_prph(il, reg); | |
152 | _il_release_nic_access(il); | |
153 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
154 | return val; | |
155 | } | |
156 | EXPORT_SYMBOL(il_rd_prph); | |
157 | ||
158 | void | |
159 | il_wr_prph(struct il_priv *il, u32 addr, u32 val) | |
160 | { | |
161 | unsigned long reg_flags; | |
162 | ||
163 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
1e0f32a4 | 164 | if (likely(_il_grab_nic_access(il))) { |
17d4eca6 SG |
165 | _il_wr_prph(il, addr, val); |
166 | _il_release_nic_access(il); | |
167 | } | |
168 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
169 | } | |
170 | EXPORT_SYMBOL(il_wr_prph); | |
171 | ||
172 | u32 | |
173 | il_read_targ_mem(struct il_priv *il, u32 addr) | |
174 | { | |
175 | unsigned long reg_flags; | |
176 | u32 value; | |
177 | ||
178 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
179 | _il_grab_nic_access(il); | |
180 | ||
181 | _il_wr(il, HBUS_TARG_MEM_RADDR, addr); | |
17d4eca6 SG |
182 | value = _il_rd(il, HBUS_TARG_MEM_RDAT); |
183 | ||
184 | _il_release_nic_access(il); | |
185 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
186 | return value; | |
187 | } | |
188 | EXPORT_SYMBOL(il_read_targ_mem); | |
189 | ||
190 | void | |
191 | il_write_targ_mem(struct il_priv *il, u32 addr, u32 val) | |
192 | { | |
193 | unsigned long reg_flags; | |
194 | ||
195 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
1e0f32a4 | 196 | if (likely(_il_grab_nic_access(il))) { |
17d4eca6 | 197 | _il_wr(il, HBUS_TARG_MEM_WADDR, addr); |
17d4eca6 SG |
198 | _il_wr(il, HBUS_TARG_MEM_WDAT, val); |
199 | _il_release_nic_access(il); | |
200 | } | |
201 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
202 | } | |
203 | EXPORT_SYMBOL(il_write_targ_mem); | |
204 | ||
e7392364 SG |
205 | const char * |
206 | il_get_cmd_string(u8 cmd) | |
0cdc2136 SG |
207 | { |
208 | switch (cmd) { | |
209 | IL_CMD(N_ALIVE); | |
210 | IL_CMD(N_ERROR); | |
211 | IL_CMD(C_RXON); | |
212 | IL_CMD(C_RXON_ASSOC); | |
213 | IL_CMD(C_QOS_PARAM); | |
214 | IL_CMD(C_RXON_TIMING); | |
215 | IL_CMD(C_ADD_STA); | |
216 | IL_CMD(C_REM_STA); | |
217 | IL_CMD(C_WEPKEY); | |
218 | IL_CMD(N_3945_RX); | |
219 | IL_CMD(C_TX); | |
220 | IL_CMD(C_RATE_SCALE); | |
221 | IL_CMD(C_LEDS); | |
222 | IL_CMD(C_TX_LINK_QUALITY_CMD); | |
223 | IL_CMD(C_CHANNEL_SWITCH); | |
224 | IL_CMD(N_CHANNEL_SWITCH); | |
225 | IL_CMD(C_SPECTRUM_MEASUREMENT); | |
226 | IL_CMD(N_SPECTRUM_MEASUREMENT); | |
227 | IL_CMD(C_POWER_TBL); | |
228 | IL_CMD(N_PM_SLEEP); | |
229 | IL_CMD(N_PM_DEBUG_STATS); | |
230 | IL_CMD(C_SCAN); | |
231 | IL_CMD(C_SCAN_ABORT); | |
232 | IL_CMD(N_SCAN_START); | |
233 | IL_CMD(N_SCAN_RESULTS); | |
234 | IL_CMD(N_SCAN_COMPLETE); | |
235 | IL_CMD(N_BEACON); | |
236 | IL_CMD(C_TX_BEACON); | |
237 | IL_CMD(C_TX_PWR_TBL); | |
238 | IL_CMD(C_BT_CONFIG); | |
239 | IL_CMD(C_STATS); | |
240 | IL_CMD(N_STATS); | |
241 | IL_CMD(N_CARD_STATE); | |
242 | IL_CMD(N_MISSED_BEACONS); | |
243 | IL_CMD(C_CT_KILL_CONFIG); | |
244 | IL_CMD(C_SENSITIVITY); | |
245 | IL_CMD(C_PHY_CALIBRATION); | |
246 | IL_CMD(N_RX_PHY); | |
247 | IL_CMD(N_RX_MPDU); | |
248 | IL_CMD(N_RX); | |
249 | IL_CMD(N_COMPRESSED_BA); | |
250 | default: | |
251 | return "UNKNOWN"; | |
252 | ||
253 | } | |
254 | } | |
255 | EXPORT_SYMBOL(il_get_cmd_string); | |
256 | ||
257 | #define HOST_COMPLETE_TIMEOUT (HZ / 2) | |
258 | ||
e7392364 SG |
259 | static void |
260 | il_generic_cmd_callback(struct il_priv *il, struct il_device_cmd *cmd, | |
261 | struct il_rx_pkt *pkt) | |
0cdc2136 SG |
262 | { |
263 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { | |
264 | IL_ERR("Bad return from %s (0x%08X)\n", | |
e7392364 | 265 | il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
0cdc2136 SG |
266 | return; |
267 | } | |
0cdc2136 SG |
268 | #ifdef CONFIG_IWLEGACY_DEBUG |
269 | switch (cmd->hdr.cmd) { | |
270 | case C_TX_LINK_QUALITY_CMD: | |
271 | case C_SENSITIVITY: | |
272 | D_HC_DUMP("back from %s (0x%08X)\n", | |
e7392364 | 273 | il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
0cdc2136 SG |
274 | break; |
275 | default: | |
e7392364 SG |
276 | D_HC("back from %s (0x%08X)\n", il_get_cmd_string(cmd->hdr.cmd), |
277 | pkt->hdr.flags); | |
0cdc2136 SG |
278 | } |
279 | #endif | |
280 | } | |
281 | ||
282 | static int | |
283 | il_send_cmd_async(struct il_priv *il, struct il_host_cmd *cmd) | |
284 | { | |
285 | int ret; | |
286 | ||
287 | BUG_ON(!(cmd->flags & CMD_ASYNC)); | |
288 | ||
289 | /* An asynchronous command can not expect an SKB to be set. */ | |
290 | BUG_ON(cmd->flags & CMD_WANT_SKB); | |
291 | ||
292 | /* Assign a generic callback if one is not provided */ | |
293 | if (!cmd->callback) | |
294 | cmd->callback = il_generic_cmd_callback; | |
295 | ||
296 | if (test_bit(S_EXIT_PENDING, &il->status)) | |
297 | return -EBUSY; | |
298 | ||
299 | ret = il_enqueue_hcmd(il, cmd); | |
300 | if (ret < 0) { | |
301 | IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", | |
e7392364 | 302 | il_get_cmd_string(cmd->id), ret); |
0cdc2136 SG |
303 | return ret; |
304 | } | |
305 | return 0; | |
306 | } | |
307 | ||
e7392364 SG |
308 | int |
309 | il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd) | |
0cdc2136 SG |
310 | { |
311 | int cmd_idx; | |
312 | int ret; | |
313 | ||
314 | lockdep_assert_held(&il->mutex); | |
315 | ||
316 | BUG_ON(cmd->flags & CMD_ASYNC); | |
317 | ||
e7392364 | 318 | /* A synchronous command can not have a callback set. */ |
0cdc2136 SG |
319 | BUG_ON(cmd->callback); |
320 | ||
321 | D_INFO("Attempting to send sync command %s\n", | |
e7392364 | 322 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
323 | |
324 | set_bit(S_HCMD_ACTIVE, &il->status); | |
325 | D_INFO("Setting HCMD_ACTIVE for command %s\n", | |
e7392364 | 326 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
327 | |
328 | cmd_idx = il_enqueue_hcmd(il, cmd); | |
329 | if (cmd_idx < 0) { | |
330 | ret = cmd_idx; | |
331 | IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", | |
e7392364 | 332 | il_get_cmd_string(cmd->id), ret); |
0cdc2136 SG |
333 | goto out; |
334 | } | |
335 | ||
336 | ret = wait_event_timeout(il->wait_command_queue, | |
e7392364 SG |
337 | !test_bit(S_HCMD_ACTIVE, &il->status), |
338 | HOST_COMPLETE_TIMEOUT); | |
0cdc2136 SG |
339 | if (!ret) { |
340 | if (test_bit(S_HCMD_ACTIVE, &il->status)) { | |
e7392364 SG |
341 | IL_ERR("Error sending %s: time out after %dms.\n", |
342 | il_get_cmd_string(cmd->id), | |
343 | jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); | |
0cdc2136 SG |
344 | |
345 | clear_bit(S_HCMD_ACTIVE, &il->status); | |
e7392364 SG |
346 | D_INFO("Clearing HCMD_ACTIVE for command %s\n", |
347 | il_get_cmd_string(cmd->id)); | |
0cdc2136 SG |
348 | ret = -ETIMEDOUT; |
349 | goto cancel; | |
350 | } | |
351 | } | |
352 | ||
bc269a8e | 353 | if (test_bit(S_RFKILL, &il->status)) { |
0cdc2136 | 354 | IL_ERR("Command %s aborted: RF KILL Switch\n", |
e7392364 | 355 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
356 | ret = -ECANCELED; |
357 | goto fail; | |
358 | } | |
359 | if (test_bit(S_FW_ERROR, &il->status)) { | |
360 | IL_ERR("Command %s failed: FW Error\n", | |
e7392364 | 361 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
362 | ret = -EIO; |
363 | goto fail; | |
364 | } | |
365 | if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) { | |
366 | IL_ERR("Error: Response NULL in '%s'\n", | |
e7392364 | 367 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
368 | ret = -EIO; |
369 | goto cancel; | |
370 | } | |
371 | ||
372 | ret = 0; | |
373 | goto out; | |
374 | ||
375 | cancel: | |
376 | if (cmd->flags & CMD_WANT_SKB) { | |
377 | /* | |
378 | * Cancel the CMD_WANT_SKB flag for the cmd in the | |
379 | * TX cmd queue. Otherwise in case the cmd comes | |
380 | * in later, it will possibly set an invalid | |
381 | * address (cmd->meta.source). | |
382 | */ | |
e7392364 | 383 | il->txq[il->cmd_queue].meta[cmd_idx].flags &= ~CMD_WANT_SKB; |
0cdc2136 SG |
384 | } |
385 | fail: | |
386 | if (cmd->reply_page) { | |
387 | il_free_pages(il, cmd->reply_page); | |
388 | cmd->reply_page = 0; | |
389 | } | |
390 | out: | |
391 | return ret; | |
392 | } | |
393 | EXPORT_SYMBOL(il_send_cmd_sync); | |
394 | ||
e7392364 SG |
395 | int |
396 | il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd) | |
0cdc2136 SG |
397 | { |
398 | if (cmd->flags & CMD_ASYNC) | |
399 | return il_send_cmd_async(il, cmd); | |
400 | ||
401 | return il_send_cmd_sync(il, cmd); | |
402 | } | |
403 | EXPORT_SYMBOL(il_send_cmd); | |
404 | ||
405 | int | |
406 | il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len, const void *data) | |
407 | { | |
408 | struct il_host_cmd cmd = { | |
409 | .id = id, | |
410 | .len = len, | |
411 | .data = data, | |
412 | }; | |
413 | ||
414 | return il_send_cmd_sync(il, &cmd); | |
415 | } | |
416 | EXPORT_SYMBOL(il_send_cmd_pdu); | |
417 | ||
e7392364 SG |
418 | int |
419 | il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data, | |
1722f8e1 SG |
420 | void (*callback) (struct il_priv *il, |
421 | struct il_device_cmd *cmd, | |
422 | struct il_rx_pkt *pkt)) | |
0cdc2136 SG |
423 | { |
424 | struct il_host_cmd cmd = { | |
425 | .id = id, | |
426 | .len = len, | |
427 | .data = data, | |
428 | }; | |
429 | ||
430 | cmd.flags |= CMD_ASYNC; | |
431 | cmd.callback = callback; | |
432 | ||
433 | return il_send_cmd_async(il, &cmd); | |
434 | } | |
435 | EXPORT_SYMBOL(il_send_cmd_pdu_async); | |
436 | ||
437 | /* default: IL_LED_BLINK(0) using blinking idx table */ | |
438 | static int led_mode; | |
439 | module_param(led_mode, int, S_IRUGO); | |
e7392364 SG |
440 | MODULE_PARM_DESC(led_mode, |
441 | "0=system default, " "1=On(RF On)/Off(RF Off), 2=blinking"); | |
0cdc2136 SG |
442 | |
443 | /* Throughput OFF time(ms) ON time (ms) | |
444 | * >300 25 25 | |
445 | * >200 to 300 40 40 | |
446 | * >100 to 200 55 55 | |
447 | * >70 to 100 65 65 | |
448 | * >50 to 70 75 75 | |
449 | * >20 to 50 85 85 | |
450 | * >10 to 20 95 95 | |
451 | * >5 to 10 110 110 | |
452 | * >1 to 5 130 130 | |
453 | * >0 to 1 167 167 | |
454 | * <=0 SOLID ON | |
455 | */ | |
456 | static const struct ieee80211_tpt_blink il_blink[] = { | |
1722f8e1 SG |
457 | {.throughput = 0, .blink_time = 334}, |
458 | {.throughput = 1 * 1024 - 1, .blink_time = 260}, | |
459 | {.throughput = 5 * 1024 - 1, .blink_time = 220}, | |
460 | {.throughput = 10 * 1024 - 1, .blink_time = 190}, | |
461 | {.throughput = 20 * 1024 - 1, .blink_time = 170}, | |
462 | {.throughput = 50 * 1024 - 1, .blink_time = 150}, | |
463 | {.throughput = 70 * 1024 - 1, .blink_time = 130}, | |
464 | {.throughput = 100 * 1024 - 1, .blink_time = 110}, | |
465 | {.throughput = 200 * 1024 - 1, .blink_time = 80}, | |
466 | {.throughput = 300 * 1024 - 1, .blink_time = 50}, | |
0cdc2136 SG |
467 | }; |
468 | ||
469 | /* | |
470 | * Adjust led blink rate to compensate on a MAC Clock difference on every HW | |
471 | * Led blink rate analysis showed an average deviation of 0% on 3945, | |
472 | * 5% on 4965 HW. | |
473 | * Need to compensate on the led on/off time per HW according to the deviation | |
474 | * to achieve the desired led frequency | |
475 | * The calculation is: (100-averageDeviation)/100 * blinkTime | |
476 | * For code efficiency the calculation will be: | |
477 | * compensation = (100 - averageDeviation) * 64 / 100 | |
478 | * NewBlinkTime = (compensation * BlinkTime) / 64 | |
479 | */ | |
e7392364 SG |
480 | static inline u8 |
481 | il_blink_compensation(struct il_priv *il, u8 time, u16 compensation) | |
0cdc2136 SG |
482 | { |
483 | if (!compensation) { | |
484 | IL_ERR("undefined blink compensation: " | |
e7392364 | 485 | "use pre-defined blinking time\n"); |
0cdc2136 SG |
486 | return time; |
487 | } | |
488 | ||
e7392364 | 489 | return (u8) ((time * compensation) >> 6); |
0cdc2136 SG |
490 | } |
491 | ||
492 | /* Set led pattern command */ | |
e7392364 SG |
493 | static int |
494 | il_led_cmd(struct il_priv *il, unsigned long on, unsigned long off) | |
0cdc2136 SG |
495 | { |
496 | struct il_led_cmd led_cmd = { | |
497 | .id = IL_LED_LINK, | |
498 | .interval = IL_DEF_LED_INTRVL | |
499 | }; | |
500 | int ret; | |
501 | ||
502 | if (!test_bit(S_READY, &il->status)) | |
503 | return -EBUSY; | |
504 | ||
505 | if (il->blink_on == on && il->blink_off == off) | |
506 | return 0; | |
507 | ||
508 | if (off == 0) { | |
509 | /* led is SOLID_ON */ | |
510 | on = IL_LED_SOLID; | |
511 | } | |
512 | ||
513 | D_LED("Led blink time compensation=%u\n", | |
89ef1ed2 | 514 | il->cfg->led_compensation); |
e7392364 SG |
515 | led_cmd.on = |
516 | il_blink_compensation(il, on, | |
89ef1ed2 | 517 | il->cfg->led_compensation); |
e7392364 SG |
518 | led_cmd.off = |
519 | il_blink_compensation(il, off, | |
89ef1ed2 | 520 | il->cfg->led_compensation); |
0cdc2136 | 521 | |
c9363551 | 522 | ret = il->ops->send_led_cmd(il, &led_cmd); |
0cdc2136 SG |
523 | if (!ret) { |
524 | il->blink_on = on; | |
525 | il->blink_off = off; | |
526 | } | |
527 | return ret; | |
528 | } | |
529 | ||
e7392364 SG |
530 | static void |
531 | il_led_brightness_set(struct led_classdev *led_cdev, | |
532 | enum led_brightness brightness) | |
0cdc2136 SG |
533 | { |
534 | struct il_priv *il = container_of(led_cdev, struct il_priv, led); | |
535 | unsigned long on = 0; | |
536 | ||
537 | if (brightness > 0) | |
538 | on = IL_LED_SOLID; | |
539 | ||
540 | il_led_cmd(il, on, 0); | |
541 | } | |
542 | ||
e7392364 SG |
543 | static int |
544 | il_led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, | |
545 | unsigned long *delay_off) | |
0cdc2136 SG |
546 | { |
547 | struct il_priv *il = container_of(led_cdev, struct il_priv, led); | |
548 | ||
549 | return il_led_cmd(il, *delay_on, *delay_off); | |
550 | } | |
551 | ||
e7392364 SG |
552 | void |
553 | il_leds_init(struct il_priv *il) | |
0cdc2136 SG |
554 | { |
555 | int mode = led_mode; | |
556 | int ret; | |
557 | ||
558 | if (mode == IL_LED_DEFAULT) | |
559 | mode = il->cfg->led_mode; | |
560 | ||
e7392364 SG |
561 | il->led.name = |
562 | kasprintf(GFP_KERNEL, "%s-led", wiphy_name(il->hw->wiphy)); | |
0cdc2136 SG |
563 | il->led.brightness_set = il_led_brightness_set; |
564 | il->led.blink_set = il_led_blink_set; | |
565 | il->led.max_brightness = 1; | |
566 | ||
567 | switch (mode) { | |
568 | case IL_LED_DEFAULT: | |
569 | WARN_ON(1); | |
570 | break; | |
571 | case IL_LED_BLINK: | |
572 | il->led.default_trigger = | |
e7392364 SG |
573 | ieee80211_create_tpt_led_trigger(il->hw, |
574 | IEEE80211_TPT_LEDTRIG_FL_CONNECTED, | |
575 | il_blink, | |
576 | ARRAY_SIZE(il_blink)); | |
0cdc2136 SG |
577 | break; |
578 | case IL_LED_RF_STATE: | |
e7392364 | 579 | il->led.default_trigger = ieee80211_get_radio_led_name(il->hw); |
0cdc2136 SG |
580 | break; |
581 | } | |
582 | ||
583 | ret = led_classdev_register(&il->pci_dev->dev, &il->led); | |
584 | if (ret) { | |
585 | kfree(il->led.name); | |
586 | return; | |
587 | } | |
588 | ||
589 | il->led_registered = true; | |
590 | } | |
591 | EXPORT_SYMBOL(il_leds_init); | |
592 | ||
e7392364 SG |
593 | void |
594 | il_leds_exit(struct il_priv *il) | |
0cdc2136 SG |
595 | { |
596 | if (!il->led_registered) | |
597 | return; | |
598 | ||
599 | led_classdev_unregister(&il->led); | |
600 | kfree(il->led.name); | |
601 | } | |
602 | EXPORT_SYMBOL(il_leds_exit); | |
603 | ||
604 | /************************** EEPROM BANDS **************************** | |
605 | * | |
606 | * The il_eeprom_band definitions below provide the mapping from the | |
607 | * EEPROM contents to the specific channel number supported for each | |
608 | * band. | |
609 | * | |
610 | * For example, il_priv->eeprom.band_3_channels[4] from the band_3 | |
611 | * definition below maps to physical channel 42 in the 5.2GHz spectrum. | |
612 | * The specific geography and calibration information for that channel | |
613 | * is contained in the eeprom map itself. | |
614 | * | |
615 | * During init, we copy the eeprom information and channel map | |
616 | * information into il->channel_info_24/52 and il->channel_map_24/52 | |
617 | * | |
618 | * channel_map_24/52 provides the idx in the channel_info array for a | |
619 | * given channel. We have to have two separate maps as there is channel | |
620 | * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and | |
621 | * band_2 | |
622 | * | |
623 | * A value of 0xff stored in the channel_map indicates that the channel | |
624 | * is not supported by the hardware at all. | |
625 | * | |
626 | * A value of 0xfe in the channel_map indicates that the channel is not | |
627 | * valid for Tx with the current hardware. This means that | |
628 | * while the system can tune and receive on a given channel, it may not | |
629 | * be able to associate or transmit any frames on that | |
630 | * channel. There is no corresponding channel information for that | |
631 | * entry. | |
632 | * | |
633 | *********************************************************************/ | |
634 | ||
635 | /* 2.4 GHz */ | |
636 | const u8 il_eeprom_band_1[14] = { | |
637 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 | |
638 | }; | |
639 | ||
640 | /* 5.2 GHz bands */ | |
641 | static const u8 il_eeprom_band_2[] = { /* 4915-5080MHz */ | |
642 | 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 | |
643 | }; | |
644 | ||
645 | static const u8 il_eeprom_band_3[] = { /* 5170-5320MHz */ | |
646 | 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 | |
647 | }; | |
648 | ||
649 | static const u8 il_eeprom_band_4[] = { /* 5500-5700MHz */ | |
650 | 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 | |
651 | }; | |
652 | ||
653 | static const u8 il_eeprom_band_5[] = { /* 5725-5825MHz */ | |
654 | 145, 149, 153, 157, 161, 165 | |
655 | }; | |
656 | ||
e7392364 | 657 | static const u8 il_eeprom_band_6[] = { /* 2.4 ht40 channel */ |
0cdc2136 SG |
658 | 1, 2, 3, 4, 5, 6, 7 |
659 | }; | |
660 | ||
e7392364 | 661 | static const u8 il_eeprom_band_7[] = { /* 5.2 ht40 channel */ |
0cdc2136 SG |
662 | 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 |
663 | }; | |
664 | ||
665 | /****************************************************************************** | |
666 | * | |
667 | * EEPROM related functions | |
668 | * | |
669 | ******************************************************************************/ | |
670 | ||
e7392364 SG |
671 | static int |
672 | il_eeprom_verify_signature(struct il_priv *il) | |
0cdc2136 SG |
673 | { |
674 | u32 gp = _il_rd(il, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK; | |
675 | int ret = 0; | |
676 | ||
677 | D_EEPROM("EEPROM signature=0x%08x\n", gp); | |
678 | switch (gp) { | |
679 | case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K: | |
680 | case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K: | |
681 | break; | |
682 | default: | |
e7392364 | 683 | IL_ERR("bad EEPROM signature," "EEPROM_GP=0x%08x\n", gp); |
0cdc2136 SG |
684 | ret = -ENOENT; |
685 | break; | |
686 | } | |
687 | return ret; | |
688 | } | |
689 | ||
e7392364 SG |
690 | const u8 * |
691 | il_eeprom_query_addr(const struct il_priv *il, size_t offset) | |
0cdc2136 | 692 | { |
89ef1ed2 | 693 | BUG_ON(offset >= il->cfg->eeprom_size); |
0cdc2136 SG |
694 | return &il->eeprom[offset]; |
695 | } | |
696 | EXPORT_SYMBOL(il_eeprom_query_addr); | |
697 | ||
e7392364 | 698 | u16 |
1722f8e1 | 699 | il_eeprom_query16(const struct il_priv *il, size_t offset) |
0cdc2136 SG |
700 | { |
701 | if (!il->eeprom) | |
702 | return 0; | |
e7392364 | 703 | return (u16) il->eeprom[offset] | ((u16) il->eeprom[offset + 1] << 8); |
0cdc2136 SG |
704 | } |
705 | EXPORT_SYMBOL(il_eeprom_query16); | |
706 | ||
707 | /** | |
708 | * il_eeprom_init - read EEPROM contents | |
709 | * | |
710 | * Load the EEPROM contents from adapter into il->eeprom | |
711 | * | |
712 | * NOTE: This routine uses the non-debug IO access functions. | |
713 | */ | |
e7392364 SG |
714 | int |
715 | il_eeprom_init(struct il_priv *il) | |
0cdc2136 SG |
716 | { |
717 | __le16 *e; | |
718 | u32 gp = _il_rd(il, CSR_EEPROM_GP); | |
719 | int sz; | |
720 | int ret; | |
721 | u16 addr; | |
722 | ||
723 | /* allocate eeprom */ | |
89ef1ed2 | 724 | sz = il->cfg->eeprom_size; |
0cdc2136 SG |
725 | D_EEPROM("NVM size = %d\n", sz); |
726 | il->eeprom = kzalloc(sz, GFP_KERNEL); | |
727 | if (!il->eeprom) { | |
728 | ret = -ENOMEM; | |
729 | goto alloc_err; | |
730 | } | |
e7392364 | 731 | e = (__le16 *) il->eeprom; |
0cdc2136 | 732 | |
1600b875 | 733 | il->ops->apm_init(il); |
0cdc2136 SG |
734 | |
735 | ret = il_eeprom_verify_signature(il); | |
736 | if (ret < 0) { | |
737 | IL_ERR("EEPROM not found, EEPROM_GP=0x%08x\n", gp); | |
738 | ret = -ENOENT; | |
739 | goto err; | |
740 | } | |
741 | ||
742 | /* Make sure driver (instead of uCode) is allowed to read EEPROM */ | |
1600b875 | 743 | ret = il->ops->eeprom_acquire_semaphore(il); |
0cdc2136 SG |
744 | if (ret < 0) { |
745 | IL_ERR("Failed to acquire EEPROM semaphore.\n"); | |
746 | ret = -ENOENT; | |
747 | goto err; | |
748 | } | |
749 | ||
750 | /* eeprom is an array of 16bit values */ | |
751 | for (addr = 0; addr < sz; addr += sizeof(u16)) { | |
752 | u32 r; | |
753 | ||
754 | _il_wr(il, CSR_EEPROM_REG, | |
e7392364 | 755 | CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); |
0cdc2136 | 756 | |
e7392364 SG |
757 | ret = |
758 | _il_poll_bit(il, CSR_EEPROM_REG, | |
759 | CSR_EEPROM_REG_READ_VALID_MSK, | |
760 | CSR_EEPROM_REG_READ_VALID_MSK, | |
761 | IL_EEPROM_ACCESS_TIMEOUT); | |
0cdc2136 | 762 | if (ret < 0) { |
e7392364 | 763 | IL_ERR("Time out reading EEPROM[%d]\n", addr); |
0cdc2136 SG |
764 | goto done; |
765 | } | |
766 | r = _il_rd(il, CSR_EEPROM_REG); | |
767 | e[addr / 2] = cpu_to_le16(r >> 16); | |
768 | } | |
769 | ||
e7392364 SG |
770 | D_EEPROM("NVM Type: %s, version: 0x%x\n", "EEPROM", |
771 | il_eeprom_query16(il, EEPROM_VERSION)); | |
0cdc2136 SG |
772 | |
773 | ret = 0; | |
774 | done: | |
1600b875 | 775 | il->ops->eeprom_release_semaphore(il); |
0cdc2136 SG |
776 | |
777 | err: | |
778 | if (ret) | |
779 | il_eeprom_free(il); | |
780 | /* Reset chip to save power until we load uCode during "up". */ | |
781 | il_apm_stop(il); | |
782 | alloc_err: | |
783 | return ret; | |
784 | } | |
785 | EXPORT_SYMBOL(il_eeprom_init); | |
786 | ||
e7392364 SG |
787 | void |
788 | il_eeprom_free(struct il_priv *il) | |
0cdc2136 SG |
789 | { |
790 | kfree(il->eeprom); | |
791 | il->eeprom = NULL; | |
792 | } | |
793 | EXPORT_SYMBOL(il_eeprom_free); | |
794 | ||
e7392364 SG |
795 | static void |
796 | il_init_band_reference(const struct il_priv *il, int eep_band, | |
797 | int *eeprom_ch_count, | |
798 | const struct il_eeprom_channel **eeprom_ch_info, | |
1722f8e1 | 799 | const u8 **eeprom_ch_idx) |
0cdc2136 | 800 | { |
93a984a4 SG |
801 | u32 offset = il->cfg->regulatory_bands[eep_band - 1]; |
802 | ||
0cdc2136 SG |
803 | switch (eep_band) { |
804 | case 1: /* 2.4GHz band */ | |
805 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_1); | |
e7392364 SG |
806 | *eeprom_ch_info = |
807 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
808 | offset); | |
0cdc2136 SG |
809 | *eeprom_ch_idx = il_eeprom_band_1; |
810 | break; | |
811 | case 2: /* 4.9GHz band */ | |
812 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_2); | |
e7392364 SG |
813 | *eeprom_ch_info = |
814 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
815 | offset); | |
0cdc2136 SG |
816 | *eeprom_ch_idx = il_eeprom_band_2; |
817 | break; | |
818 | case 3: /* 5.2GHz band */ | |
819 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_3); | |
e7392364 SG |
820 | *eeprom_ch_info = |
821 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
822 | offset); | |
0cdc2136 SG |
823 | *eeprom_ch_idx = il_eeprom_band_3; |
824 | break; | |
825 | case 4: /* 5.5GHz band */ | |
826 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_4); | |
e7392364 SG |
827 | *eeprom_ch_info = |
828 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
829 | offset); | |
0cdc2136 SG |
830 | *eeprom_ch_idx = il_eeprom_band_4; |
831 | break; | |
832 | case 5: /* 5.7GHz band */ | |
833 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_5); | |
e7392364 SG |
834 | *eeprom_ch_info = |
835 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
836 | offset); | |
0cdc2136 SG |
837 | *eeprom_ch_idx = il_eeprom_band_5; |
838 | break; | |
839 | case 6: /* 2.4GHz ht40 channels */ | |
840 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_6); | |
e7392364 SG |
841 | *eeprom_ch_info = |
842 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
843 | offset); | |
0cdc2136 SG |
844 | *eeprom_ch_idx = il_eeprom_band_6; |
845 | break; | |
846 | case 7: /* 5 GHz ht40 channels */ | |
847 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_7); | |
e7392364 SG |
848 | *eeprom_ch_info = |
849 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
850 | offset); | |
0cdc2136 SG |
851 | *eeprom_ch_idx = il_eeprom_band_7; |
852 | break; | |
853 | default: | |
854 | BUG(); | |
855 | } | |
856 | } | |
857 | ||
858 | #define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \ | |
859 | ? # x " " : "") | |
860 | /** | |
861 | * il_mod_ht40_chan_info - Copy ht40 channel info into driver's il. | |
862 | * | |
863 | * Does not set up a command, or touch hardware. | |
864 | */ | |
e7392364 SG |
865 | static int |
866 | il_mod_ht40_chan_info(struct il_priv *il, enum ieee80211_band band, u16 channel, | |
867 | const struct il_eeprom_channel *eeprom_ch, | |
868 | u8 clear_ht40_extension_channel) | |
0cdc2136 SG |
869 | { |
870 | struct il_channel_info *ch_info; | |
871 | ||
e7392364 SG |
872 | ch_info = |
873 | (struct il_channel_info *)il_get_channel_info(il, band, channel); | |
0cdc2136 SG |
874 | |
875 | if (!il_is_channel_valid(ch_info)) | |
876 | return -1; | |
877 | ||
878 | D_EEPROM("HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):" | |
e7392364 SG |
879 | " Ad-Hoc %ssupported\n", ch_info->channel, |
880 | il_is_channel_a_band(ch_info) ? "5.2" : "2.4", | |
881 | CHECK_AND_PRINT(IBSS), CHECK_AND_PRINT(ACTIVE), | |
882 | CHECK_AND_PRINT(RADAR), CHECK_AND_PRINT(WIDE), | |
883 | CHECK_AND_PRINT(DFS), eeprom_ch->flags, | |
884 | eeprom_ch->max_power_avg, | |
885 | ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) && | |
886 | !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" : "not "); | |
0cdc2136 SG |
887 | |
888 | ch_info->ht40_eeprom = *eeprom_ch; | |
889 | ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg; | |
890 | ch_info->ht40_flags = eeprom_ch->flags; | |
891 | if (eeprom_ch->flags & EEPROM_CHANNEL_VALID) | |
892 | ch_info->ht40_extension_channel &= | |
e7392364 | 893 | ~clear_ht40_extension_channel; |
0cdc2136 SG |
894 | |
895 | return 0; | |
896 | } | |
897 | ||
898 | #define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ | |
899 | ? # x " " : "") | |
900 | ||
901 | /** | |
902 | * il_init_channel_map - Set up driver's info for all possible channels | |
903 | */ | |
e7392364 SG |
904 | int |
905 | il_init_channel_map(struct il_priv *il) | |
0cdc2136 SG |
906 | { |
907 | int eeprom_ch_count = 0; | |
908 | const u8 *eeprom_ch_idx = NULL; | |
909 | const struct il_eeprom_channel *eeprom_ch_info = NULL; | |
910 | int band, ch; | |
911 | struct il_channel_info *ch_info; | |
912 | ||
913 | if (il->channel_count) { | |
914 | D_EEPROM("Channel map already initialized.\n"); | |
915 | return 0; | |
916 | } | |
917 | ||
918 | D_EEPROM("Initializing regulatory info from EEPROM\n"); | |
919 | ||
920 | il->channel_count = | |
e7392364 SG |
921 | ARRAY_SIZE(il_eeprom_band_1) + ARRAY_SIZE(il_eeprom_band_2) + |
922 | ARRAY_SIZE(il_eeprom_band_3) + ARRAY_SIZE(il_eeprom_band_4) + | |
0cdc2136 SG |
923 | ARRAY_SIZE(il_eeprom_band_5); |
924 | ||
e7392364 | 925 | D_EEPROM("Parsing data for %d channels.\n", il->channel_count); |
0cdc2136 | 926 | |
e7392364 SG |
927 | il->channel_info = |
928 | kzalloc(sizeof(struct il_channel_info) * il->channel_count, | |
929 | GFP_KERNEL); | |
0cdc2136 SG |
930 | if (!il->channel_info) { |
931 | IL_ERR("Could not allocate channel_info\n"); | |
932 | il->channel_count = 0; | |
933 | return -ENOMEM; | |
934 | } | |
935 | ||
936 | ch_info = il->channel_info; | |
937 | ||
938 | /* Loop through the 5 EEPROM bands adding them in order to the | |
939 | * channel map we maintain (that contains additional information than | |
940 | * what just in the EEPROM) */ | |
941 | for (band = 1; band <= 5; band++) { | |
942 | ||
943 | il_init_band_reference(il, band, &eeprom_ch_count, | |
e7392364 | 944 | &eeprom_ch_info, &eeprom_ch_idx); |
0cdc2136 SG |
945 | |
946 | /* Loop through each band adding each of the channels */ | |
947 | for (ch = 0; ch < eeprom_ch_count; ch++) { | |
948 | ch_info->channel = eeprom_ch_idx[ch]; | |
e7392364 SG |
949 | ch_info->band = |
950 | (band == | |
951 | 1) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
0cdc2136 SG |
952 | |
953 | /* permanently store EEPROM's channel regulatory flags | |
954 | * and max power in channel info database. */ | |
955 | ch_info->eeprom = eeprom_ch_info[ch]; | |
956 | ||
957 | /* Copy the run-time flags so they are there even on | |
958 | * invalid channels */ | |
959 | ch_info->flags = eeprom_ch_info[ch].flags; | |
960 | /* First write that ht40 is not enabled, and then enable | |
961 | * one by one */ | |
962 | ch_info->ht40_extension_channel = | |
e7392364 | 963 | IEEE80211_CHAN_NO_HT40; |
0cdc2136 SG |
964 | |
965 | if (!(il_is_channel_valid(ch_info))) { | |
e7392364 SG |
966 | D_EEPROM("Ch. %d Flags %x [%sGHz] - " |
967 | "No traffic\n", ch_info->channel, | |
968 | ch_info->flags, | |
969 | il_is_channel_a_band(ch_info) ? "5.2" : | |
970 | "2.4"); | |
0cdc2136 SG |
971 | ch_info++; |
972 | continue; | |
973 | } | |
974 | ||
975 | /* Initialize regulatory-based run-time data */ | |
976 | ch_info->max_power_avg = ch_info->curr_txpow = | |
977 | eeprom_ch_info[ch].max_power_avg; | |
978 | ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; | |
979 | ch_info->min_power = 0; | |
980 | ||
e7392364 SG |
981 | D_EEPROM("Ch. %d [%sGHz] " "%s%s%s%s%s%s(0x%02x %ddBm):" |
982 | " Ad-Hoc %ssupported\n", ch_info->channel, | |
983 | il_is_channel_a_band(ch_info) ? "5.2" : "2.4", | |
984 | CHECK_AND_PRINT_I(VALID), | |
985 | CHECK_AND_PRINT_I(IBSS), | |
986 | CHECK_AND_PRINT_I(ACTIVE), | |
987 | CHECK_AND_PRINT_I(RADAR), | |
988 | CHECK_AND_PRINT_I(WIDE), | |
989 | CHECK_AND_PRINT_I(DFS), | |
990 | eeprom_ch_info[ch].flags, | |
991 | eeprom_ch_info[ch].max_power_avg, | |
992 | ((eeprom_ch_info[ch]. | |
993 | flags & EEPROM_CHANNEL_IBSS) && | |
994 | !(eeprom_ch_info[ch]. | |
995 | flags & EEPROM_CHANNEL_RADAR)) ? "" : | |
996 | "not "); | |
0cdc2136 SG |
997 | |
998 | ch_info++; | |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* Check if we do have HT40 channels */ | |
93a984a4 SG |
1003 | if (il->cfg->regulatory_bands[5] == EEPROM_REGULATORY_BAND_NO_HT40 && |
1004 | il->cfg->regulatory_bands[6] == EEPROM_REGULATORY_BAND_NO_HT40) | |
0cdc2136 SG |
1005 | return 0; |
1006 | ||
1007 | /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */ | |
1008 | for (band = 6; band <= 7; band++) { | |
1009 | enum ieee80211_band ieeeband; | |
1010 | ||
1011 | il_init_band_reference(il, band, &eeprom_ch_count, | |
e7392364 | 1012 | &eeprom_ch_info, &eeprom_ch_idx); |
0cdc2136 SG |
1013 | |
1014 | /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ | |
1015 | ieeeband = | |
e7392364 | 1016 | (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; |
0cdc2136 SG |
1017 | |
1018 | /* Loop through each band adding each of the channels */ | |
1019 | for (ch = 0; ch < eeprom_ch_count; ch++) { | |
1020 | /* Set up driver's info for lower half */ | |
e7392364 SG |
1021 | il_mod_ht40_chan_info(il, ieeeband, eeprom_ch_idx[ch], |
1022 | &eeprom_ch_info[ch], | |
1023 | IEEE80211_CHAN_NO_HT40PLUS); | |
0cdc2136 SG |
1024 | |
1025 | /* Set up driver's info for upper half */ | |
1026 | il_mod_ht40_chan_info(il, ieeeband, | |
e7392364 SG |
1027 | eeprom_ch_idx[ch] + 4, |
1028 | &eeprom_ch_info[ch], | |
1029 | IEEE80211_CHAN_NO_HT40MINUS); | |
0cdc2136 SG |
1030 | } |
1031 | } | |
1032 | ||
1033 | return 0; | |
1034 | } | |
1035 | EXPORT_SYMBOL(il_init_channel_map); | |
1036 | ||
1037 | /* | |
1038 | * il_free_channel_map - undo allocations in il_init_channel_map | |
1039 | */ | |
e7392364 SG |
1040 | void |
1041 | il_free_channel_map(struct il_priv *il) | |
0cdc2136 SG |
1042 | { |
1043 | kfree(il->channel_info); | |
1044 | il->channel_count = 0; | |
1045 | } | |
1046 | EXPORT_SYMBOL(il_free_channel_map); | |
1047 | ||
1048 | /** | |
1049 | * il_get_channel_info - Find driver's ilate channel info | |
1050 | * | |
1051 | * Based on band and channel number. | |
1052 | */ | |
e7392364 SG |
1053 | const struct il_channel_info * |
1054 | il_get_channel_info(const struct il_priv *il, enum ieee80211_band band, | |
1055 | u16 channel) | |
0cdc2136 SG |
1056 | { |
1057 | int i; | |
1058 | ||
1059 | switch (band) { | |
1060 | case IEEE80211_BAND_5GHZ: | |
1061 | for (i = 14; i < il->channel_count; i++) { | |
1062 | if (il->channel_info[i].channel == channel) | |
1063 | return &il->channel_info[i]; | |
1064 | } | |
1065 | break; | |
1066 | case IEEE80211_BAND_2GHZ: | |
1067 | if (channel >= 1 && channel <= 14) | |
1068 | return &il->channel_info[channel - 1]; | |
1069 | break; | |
1070 | default: | |
1071 | BUG(); | |
1072 | } | |
1073 | ||
1074 | return NULL; | |
1075 | } | |
1076 | EXPORT_SYMBOL(il_get_channel_info); | |
1077 | ||
1078 | /* | |
1079 | * Setting power level allows the card to go to sleep when not busy. | |
1080 | * | |
1081 | * We calculate a sleep command based on the required latency, which | |
1082 | * we get from mac80211. In order to handle thermal throttling, we can | |
1083 | * also use pre-defined power levels. | |
1084 | */ | |
1085 | ||
1086 | /* | |
1087 | * This defines the old power levels. They are still used by default | |
1088 | * (level 1) and for thermal throttle (levels 3 through 5) | |
1089 | */ | |
1090 | ||
1091 | struct il_power_vec_entry { | |
1092 | struct il_powertable_cmd cmd; | |
e7392364 | 1093 | u8 no_dtim; /* number of skip dtim */ |
0cdc2136 SG |
1094 | }; |
1095 | ||
e7392364 SG |
1096 | static void |
1097 | il_power_sleep_cam_cmd(struct il_priv *il, struct il_powertable_cmd *cmd) | |
0cdc2136 SG |
1098 | { |
1099 | memset(cmd, 0, sizeof(*cmd)); | |
1100 | ||
1101 | if (il->power_data.pci_pm) | |
1102 | cmd->flags |= IL_POWER_PCI_PM_MSK; | |
1103 | ||
1104 | D_POWER("Sleep command for CAM\n"); | |
1105 | } | |
1106 | ||
1107 | static int | |
1108 | il_set_power(struct il_priv *il, struct il_powertable_cmd *cmd) | |
1109 | { | |
1110 | D_POWER("Sending power/sleep command\n"); | |
1111 | D_POWER("Flags value = 0x%08X\n", cmd->flags); | |
e7392364 SG |
1112 | D_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); |
1113 | D_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); | |
1114 | D_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n", | |
1115 | le32_to_cpu(cmd->sleep_interval[0]), | |
1116 | le32_to_cpu(cmd->sleep_interval[1]), | |
1117 | le32_to_cpu(cmd->sleep_interval[2]), | |
1118 | le32_to_cpu(cmd->sleep_interval[3]), | |
1119 | le32_to_cpu(cmd->sleep_interval[4])); | |
0cdc2136 SG |
1120 | |
1121 | return il_send_cmd_pdu(il, C_POWER_TBL, | |
e7392364 | 1122 | sizeof(struct il_powertable_cmd), cmd); |
0cdc2136 SG |
1123 | } |
1124 | ||
60c46bf8 | 1125 | static int |
e7392364 | 1126 | il_power_set_mode(struct il_priv *il, struct il_powertable_cmd *cmd, bool force) |
0cdc2136 SG |
1127 | { |
1128 | int ret; | |
1129 | bool update_chains; | |
1130 | ||
1131 | lockdep_assert_held(&il->mutex); | |
1132 | ||
1133 | /* Don't update the RX chain when chain noise calibration is running */ | |
1134 | update_chains = il->chain_noise_data.state == IL_CHAIN_NOISE_DONE || | |
e7392364 | 1135 | il->chain_noise_data.state == IL_CHAIN_NOISE_ALIVE; |
0cdc2136 SG |
1136 | |
1137 | if (!memcmp(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)) && !force) | |
1138 | return 0; | |
1139 | ||
1140 | if (!il_is_ready_rf(il)) | |
1141 | return -EIO; | |
1142 | ||
1143 | /* scan complete use sleep_power_next, need to be updated */ | |
1144 | memcpy(&il->power_data.sleep_cmd_next, cmd, sizeof(*cmd)); | |
1145 | if (test_bit(S_SCANNING, &il->status) && !force) { | |
1146 | D_INFO("Defer power set mode while scanning\n"); | |
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | if (cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK) | |
1151 | set_bit(S_POWER_PMI, &il->status); | |
1152 | ||
1153 | ret = il_set_power(il, cmd); | |
1154 | if (!ret) { | |
1155 | if (!(cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK)) | |
1156 | clear_bit(S_POWER_PMI, &il->status); | |
1157 | ||
1600b875 SG |
1158 | if (il->ops->update_chain_flags && update_chains) |
1159 | il->ops->update_chain_flags(il); | |
1160 | else if (il->ops->update_chain_flags) | |
e7392364 SG |
1161 | D_POWER("Cannot update the power, chain noise " |
1162 | "calibration running: %d\n", | |
1163 | il->chain_noise_data.state); | |
0cdc2136 SG |
1164 | |
1165 | memcpy(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)); | |
1166 | } else | |
1167 | IL_ERR("set power fail, ret = %d", ret); | |
1168 | ||
1169 | return ret; | |
1170 | } | |
1171 | ||
e7392364 SG |
1172 | int |
1173 | il_power_update_mode(struct il_priv *il, bool force) | |
0cdc2136 SG |
1174 | { |
1175 | struct il_powertable_cmd cmd; | |
1176 | ||
1177 | il_power_sleep_cam_cmd(il, &cmd); | |
1178 | return il_power_set_mode(il, &cmd, force); | |
1179 | } | |
1180 | EXPORT_SYMBOL(il_power_update_mode); | |
1181 | ||
1182 | /* initialize to default */ | |
e7392364 SG |
1183 | void |
1184 | il_power_initialize(struct il_priv *il) | |
0cdc2136 | 1185 | { |
94e15613 | 1186 | u16 lctl; |
0cdc2136 | 1187 | |
94e15613 | 1188 | pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl); |
f93eaffc | 1189 | il->power_data.pci_pm = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S); |
0cdc2136 SG |
1190 | |
1191 | il->power_data.debug_sleep_level_override = -1; | |
1192 | ||
e7392364 | 1193 | memset(&il->power_data.sleep_cmd, 0, sizeof(il->power_data.sleep_cmd)); |
0cdc2136 SG |
1194 | } |
1195 | EXPORT_SYMBOL(il_power_initialize); | |
1196 | ||
1197 | /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after | |
1198 | * sending probe req. This should be set long enough to hear probe responses | |
1199 | * from more than one AP. */ | |
e7392364 | 1200 | #define IL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */ |
0cdc2136 SG |
1201 | #define IL_ACTIVE_DWELL_TIME_52 (20) |
1202 | ||
1203 | #define IL_ACTIVE_DWELL_FACTOR_24GHZ (3) | |
1204 | #define IL_ACTIVE_DWELL_FACTOR_52GHZ (2) | |
1205 | ||
1206 | /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. | |
1207 | * Must be set longer than active dwell time. | |
1208 | * For the most reliable scan, set > AP beacon interval (typically 100msec). */ | |
e7392364 | 1209 | #define IL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ |
0cdc2136 SG |
1210 | #define IL_PASSIVE_DWELL_TIME_52 (10) |
1211 | #define IL_PASSIVE_DWELL_BASE (100) | |
1212 | #define IL_CHANNEL_TUNE_TIME 5 | |
1213 | ||
e7392364 SG |
1214 | static int |
1215 | il_send_scan_abort(struct il_priv *il) | |
0cdc2136 SG |
1216 | { |
1217 | int ret; | |
1218 | struct il_rx_pkt *pkt; | |
1219 | struct il_host_cmd cmd = { | |
1220 | .id = C_SCAN_ABORT, | |
1221 | .flags = CMD_WANT_SKB, | |
1222 | }; | |
1223 | ||
1224 | /* Exit instantly with error when device is not ready | |
1225 | * to receive scan abort command or it does not perform | |
1226 | * hardware scan currently */ | |
1227 | if (!test_bit(S_READY, &il->status) || | |
1228 | !test_bit(S_GEO_CONFIGURED, &il->status) || | |
1229 | !test_bit(S_SCAN_HW, &il->status) || | |
1230 | test_bit(S_FW_ERROR, &il->status) || | |
1231 | test_bit(S_EXIT_PENDING, &il->status)) | |
1232 | return -EIO; | |
1233 | ||
1234 | ret = il_send_cmd_sync(il, &cmd); | |
1235 | if (ret) | |
1236 | return ret; | |
1237 | ||
1238 | pkt = (struct il_rx_pkt *)cmd.reply_page; | |
1239 | if (pkt->u.status != CAN_ABORT_STATUS) { | |
1240 | /* The scan abort will return 1 for success or | |
1241 | * 2 for "failure". A failure condition can be | |
1242 | * due to simply not being in an active scan which | |
1243 | * can occur if we send the scan abort before we | |
1244 | * the microcode has notified us that a scan is | |
1245 | * completed. */ | |
1246 | D_SCAN("SCAN_ABORT ret %d.\n", pkt->u.status); | |
1247 | ret = -EIO; | |
1248 | } | |
1249 | ||
1250 | il_free_pages(il, cmd.reply_page); | |
1251 | return ret; | |
1252 | } | |
1253 | ||
e7392364 SG |
1254 | static void |
1255 | il_complete_scan(struct il_priv *il, bool aborted) | |
0cdc2136 SG |
1256 | { |
1257 | /* check if scan was requested from mac80211 */ | |
1258 | if (il->scan_request) { | |
1259 | D_SCAN("Complete scan in mac80211\n"); | |
1260 | ieee80211_scan_completed(il->hw, aborted); | |
1261 | } | |
1262 | ||
1263 | il->scan_vif = NULL; | |
1264 | il->scan_request = NULL; | |
1265 | } | |
1266 | ||
e7392364 SG |
1267 | void |
1268 | il_force_scan_end(struct il_priv *il) | |
0cdc2136 SG |
1269 | { |
1270 | lockdep_assert_held(&il->mutex); | |
1271 | ||
1272 | if (!test_bit(S_SCANNING, &il->status)) { | |
1273 | D_SCAN("Forcing scan end while not scanning\n"); | |
1274 | return; | |
1275 | } | |
1276 | ||
1277 | D_SCAN("Forcing scan end\n"); | |
1278 | clear_bit(S_SCANNING, &il->status); | |
1279 | clear_bit(S_SCAN_HW, &il->status); | |
1280 | clear_bit(S_SCAN_ABORTING, &il->status); | |
1281 | il_complete_scan(il, true); | |
1282 | } | |
1283 | ||
e7392364 SG |
1284 | static void |
1285 | il_do_scan_abort(struct il_priv *il) | |
0cdc2136 SG |
1286 | { |
1287 | int ret; | |
1288 | ||
1289 | lockdep_assert_held(&il->mutex); | |
1290 | ||
1291 | if (!test_bit(S_SCANNING, &il->status)) { | |
1292 | D_SCAN("Not performing scan to abort\n"); | |
1293 | return; | |
1294 | } | |
1295 | ||
1296 | if (test_and_set_bit(S_SCAN_ABORTING, &il->status)) { | |
1297 | D_SCAN("Scan abort in progress\n"); | |
1298 | return; | |
1299 | } | |
1300 | ||
1301 | ret = il_send_scan_abort(il); | |
1302 | if (ret) { | |
1303 | D_SCAN("Send scan abort failed %d\n", ret); | |
1304 | il_force_scan_end(il); | |
1305 | } else | |
1306 | D_SCAN("Successfully send scan abort\n"); | |
1307 | } | |
1308 | ||
1309 | /** | |
1310 | * il_scan_cancel - Cancel any currently executing HW scan | |
1311 | */ | |
e7392364 SG |
1312 | int |
1313 | il_scan_cancel(struct il_priv *il) | |
0cdc2136 SG |
1314 | { |
1315 | D_SCAN("Queuing abort scan\n"); | |
1316 | queue_work(il->workqueue, &il->abort_scan); | |
1317 | return 0; | |
1318 | } | |
1319 | EXPORT_SYMBOL(il_scan_cancel); | |
1320 | ||
1321 | /** | |
1322 | * il_scan_cancel_timeout - Cancel any currently executing HW scan | |
1323 | * @ms: amount of time to wait (in milliseconds) for scan to abort | |
1324 | * | |
1325 | */ | |
e7392364 SG |
1326 | int |
1327 | il_scan_cancel_timeout(struct il_priv *il, unsigned long ms) | |
0cdc2136 SG |
1328 | { |
1329 | unsigned long timeout = jiffies + msecs_to_jiffies(ms); | |
1330 | ||
1331 | lockdep_assert_held(&il->mutex); | |
1332 | ||
1333 | D_SCAN("Scan cancel timeout\n"); | |
1334 | ||
1335 | il_do_scan_abort(il); | |
1336 | ||
1337 | while (time_before_eq(jiffies, timeout)) { | |
1338 | if (!test_bit(S_SCAN_HW, &il->status)) | |
1339 | break; | |
1340 | msleep(20); | |
1341 | } | |
1342 | ||
1343 | return test_bit(S_SCAN_HW, &il->status); | |
1344 | } | |
1345 | EXPORT_SYMBOL(il_scan_cancel_timeout); | |
1346 | ||
1347 | /* Service response to C_SCAN (0x80) */ | |
e7392364 SG |
1348 | static void |
1349 | il_hdl_scan(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1350 | { |
1351 | #ifdef CONFIG_IWLEGACY_DEBUG | |
1352 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1353 | struct il_scanreq_notification *notif = | |
1354 | (struct il_scanreq_notification *)pkt->u.raw; | |
1355 | ||
1356 | D_SCAN("Scan request status = 0x%x\n", notif->status); | |
1357 | #endif | |
1358 | } | |
1359 | ||
1360 | /* Service N_SCAN_START (0x82) */ | |
e7392364 SG |
1361 | static void |
1362 | il_hdl_scan_start(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1363 | { |
1364 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1365 | struct il_scanstart_notification *notif = | |
1366 | (struct il_scanstart_notification *)pkt->u.raw; | |
1367 | il->scan_start_tsf = le32_to_cpu(notif->tsf_low); | |
e7392364 SG |
1368 | D_SCAN("Scan start: " "%d [802.11%s] " |
1369 | "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel, | |
1370 | notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high), | |
1371 | le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer); | |
0cdc2136 SG |
1372 | } |
1373 | ||
1374 | /* Service N_SCAN_RESULTS (0x83) */ | |
e7392364 SG |
1375 | static void |
1376 | il_hdl_scan_results(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1377 | { |
1378 | #ifdef CONFIG_IWLEGACY_DEBUG | |
1379 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1380 | struct il_scanresults_notification *notif = | |
1381 | (struct il_scanresults_notification *)pkt->u.raw; | |
1382 | ||
e7392364 SG |
1383 | D_SCAN("Scan ch.res: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d " |
1384 | "elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a", | |
1385 | le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), | |
1386 | le32_to_cpu(notif->stats[0]), | |
1387 | le32_to_cpu(notif->tsf_low) - il->scan_start_tsf); | |
0cdc2136 SG |
1388 | #endif |
1389 | } | |
1390 | ||
1391 | /* Service N_SCAN_COMPLETE (0x84) */ | |
e7392364 SG |
1392 | static void |
1393 | il_hdl_scan_complete(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1394 | { |
1395 | ||
1396 | #ifdef CONFIG_IWLEGACY_DEBUG | |
1397 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1398 | struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw; | |
1399 | #endif | |
1400 | ||
e7392364 SG |
1401 | D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", |
1402 | scan_notif->scanned_channels, scan_notif->tsf_low, | |
1403 | scan_notif->tsf_high, scan_notif->status); | |
0cdc2136 SG |
1404 | |
1405 | /* The HW is no longer scanning */ | |
1406 | clear_bit(S_SCAN_HW, &il->status); | |
1407 | ||
1408 | D_SCAN("Scan on %sGHz took %dms\n", | |
e7392364 SG |
1409 | (il->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", |
1410 | jiffies_to_msecs(jiffies - il->scan_start)); | |
0cdc2136 SG |
1411 | |
1412 | queue_work(il->workqueue, &il->scan_completed); | |
1413 | } | |
1414 | ||
e7392364 SG |
1415 | void |
1416 | il_setup_rx_scan_handlers(struct il_priv *il) | |
0cdc2136 SG |
1417 | { |
1418 | /* scan handlers */ | |
1419 | il->handlers[C_SCAN] = il_hdl_scan; | |
e7392364 SG |
1420 | il->handlers[N_SCAN_START] = il_hdl_scan_start; |
1421 | il->handlers[N_SCAN_RESULTS] = il_hdl_scan_results; | |
1422 | il->handlers[N_SCAN_COMPLETE] = il_hdl_scan_complete; | |
0cdc2136 SG |
1423 | } |
1424 | EXPORT_SYMBOL(il_setup_rx_scan_handlers); | |
1425 | ||
becdbc59 | 1426 | u16 |
e7392364 SG |
1427 | il_get_active_dwell_time(struct il_priv *il, enum ieee80211_band band, |
1428 | u8 n_probes) | |
0cdc2136 SG |
1429 | { |
1430 | if (band == IEEE80211_BAND_5GHZ) | |
1431 | return IL_ACTIVE_DWELL_TIME_52 + | |
e7392364 | 1432 | IL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1); |
0cdc2136 SG |
1433 | else |
1434 | return IL_ACTIVE_DWELL_TIME_24 + | |
e7392364 | 1435 | IL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1); |
0cdc2136 SG |
1436 | } |
1437 | EXPORT_SYMBOL(il_get_active_dwell_time); | |
1438 | ||
e7392364 | 1439 | u16 |
1722f8e1 SG |
1440 | il_get_passive_dwell_time(struct il_priv *il, enum ieee80211_band band, |
1441 | struct ieee80211_vif *vif) | |
0cdc2136 | 1442 | { |
0cdc2136 SG |
1443 | u16 value; |
1444 | ||
e7392364 SG |
1445 | u16 passive = |
1446 | (band == | |
1447 | IEEE80211_BAND_2GHZ) ? IL_PASSIVE_DWELL_BASE + | |
1448 | IL_PASSIVE_DWELL_TIME_24 : IL_PASSIVE_DWELL_BASE + | |
1449 | IL_PASSIVE_DWELL_TIME_52; | |
0cdc2136 SG |
1450 | |
1451 | if (il_is_any_associated(il)) { | |
1452 | /* | |
1453 | * If we're associated, we clamp the maximum passive | |
1454 | * dwell time to be 98% of the smallest beacon interval | |
1455 | * (minus 2 * channel tune time) | |
1456 | */ | |
83007196 | 1457 | value = il->vif ? il->vif->bss_conf.beacon_int : 0; |
0cdc2136 SG |
1458 | if (value > IL_PASSIVE_DWELL_BASE || !value) |
1459 | value = IL_PASSIVE_DWELL_BASE; | |
1460 | value = (value * 98) / 100 - IL_CHANNEL_TUNE_TIME * 2; | |
1461 | passive = min(value, passive); | |
1462 | } | |
1463 | ||
1464 | return passive; | |
1465 | } | |
1466 | EXPORT_SYMBOL(il_get_passive_dwell_time); | |
1467 | ||
e7392364 SG |
1468 | void |
1469 | il_init_scan_params(struct il_priv *il) | |
0cdc2136 SG |
1470 | { |
1471 | u8 ant_idx = fls(il->hw_params.valid_tx_ant) - 1; | |
1472 | if (!il->scan_tx_ant[IEEE80211_BAND_5GHZ]) | |
1473 | il->scan_tx_ant[IEEE80211_BAND_5GHZ] = ant_idx; | |
1474 | if (!il->scan_tx_ant[IEEE80211_BAND_2GHZ]) | |
1475 | il->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx; | |
1476 | } | |
1477 | EXPORT_SYMBOL(il_init_scan_params); | |
1478 | ||
e7392364 SG |
1479 | static int |
1480 | il_scan_initiate(struct il_priv *il, struct ieee80211_vif *vif) | |
0cdc2136 SG |
1481 | { |
1482 | int ret; | |
1483 | ||
1484 | lockdep_assert_held(&il->mutex); | |
1485 | ||
0cdc2136 SG |
1486 | cancel_delayed_work(&il->scan_check); |
1487 | ||
1488 | if (!il_is_ready_rf(il)) { | |
1489 | IL_WARN("Request scan called when driver not ready.\n"); | |
1490 | return -EIO; | |
1491 | } | |
1492 | ||
1493 | if (test_bit(S_SCAN_HW, &il->status)) { | |
e7392364 | 1494 | D_SCAN("Multiple concurrent scan requests in parallel.\n"); |
0cdc2136 SG |
1495 | return -EBUSY; |
1496 | } | |
1497 | ||
1498 | if (test_bit(S_SCAN_ABORTING, &il->status)) { | |
1499 | D_SCAN("Scan request while abort pending.\n"); | |
1500 | return -EBUSY; | |
1501 | } | |
1502 | ||
1503 | D_SCAN("Starting scan...\n"); | |
1504 | ||
1505 | set_bit(S_SCANNING, &il->status); | |
1506 | il->scan_start = jiffies; | |
1507 | ||
c9363551 | 1508 | ret = il->ops->request_scan(il, vif); |
0cdc2136 SG |
1509 | if (ret) { |
1510 | clear_bit(S_SCANNING, &il->status); | |
1511 | return ret; | |
1512 | } | |
1513 | ||
1514 | queue_delayed_work(il->workqueue, &il->scan_check, | |
1515 | IL_SCAN_CHECK_WATCHDOG); | |
1516 | ||
1517 | return 0; | |
1518 | } | |
1519 | ||
e7392364 SG |
1520 | int |
1521 | il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
1522 | struct cfg80211_scan_request *req) | |
0cdc2136 SG |
1523 | { |
1524 | struct il_priv *il = hw->priv; | |
1525 | int ret; | |
1526 | ||
9ce7b73c SG |
1527 | if (req->n_channels == 0) { |
1528 | IL_ERR("Can not scan on no channels.\n"); | |
0cdc2136 | 1529 | return -EINVAL; |
9ce7b73c | 1530 | } |
0cdc2136 SG |
1531 | |
1532 | mutex_lock(&il->mutex); | |
9ce7b73c | 1533 | D_MAC80211("enter\n"); |
0cdc2136 SG |
1534 | |
1535 | if (test_bit(S_SCANNING, &il->status)) { | |
1536 | D_SCAN("Scan already in progress.\n"); | |
1537 | ret = -EAGAIN; | |
1538 | goto out_unlock; | |
1539 | } | |
1540 | ||
1541 | /* mac80211 will only ask for one band at a time */ | |
1542 | il->scan_request = req; | |
1543 | il->scan_vif = vif; | |
1544 | il->scan_band = req->channels[0]->band; | |
1545 | ||
1546 | ret = il_scan_initiate(il, vif); | |
1547 | ||
0cdc2136 | 1548 | out_unlock: |
9ce7b73c | 1549 | D_MAC80211("leave ret %d\n", ret); |
0cdc2136 SG |
1550 | mutex_unlock(&il->mutex); |
1551 | ||
1552 | return ret; | |
1553 | } | |
1554 | EXPORT_SYMBOL(il_mac_hw_scan); | |
1555 | ||
e7392364 SG |
1556 | static void |
1557 | il_bg_scan_check(struct work_struct *data) | |
0cdc2136 SG |
1558 | { |
1559 | struct il_priv *il = | |
1560 | container_of(data, struct il_priv, scan_check.work); | |
1561 | ||
1562 | D_SCAN("Scan check work\n"); | |
1563 | ||
1564 | /* Since we are here firmware does not finish scan and | |
1565 | * most likely is in bad shape, so we don't bother to | |
1566 | * send abort command, just force scan complete to mac80211 */ | |
1567 | mutex_lock(&il->mutex); | |
1568 | il_force_scan_end(il); | |
1569 | mutex_unlock(&il->mutex); | |
1570 | } | |
1571 | ||
1572 | /** | |
1573 | * il_fill_probe_req - fill in all required fields and IE for probe request | |
1574 | */ | |
1575 | ||
1576 | u16 | |
1577 | il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame, | |
1722f8e1 | 1578 | const u8 *ta, const u8 *ies, int ie_len, int left) |
0cdc2136 SG |
1579 | { |
1580 | int len = 0; | |
1581 | u8 *pos = NULL; | |
1582 | ||
1583 | /* Make sure there is enough space for the probe request, | |
1584 | * two mandatory IEs and the data */ | |
1585 | left -= 24; | |
1586 | if (left < 0) | |
1587 | return 0; | |
1588 | ||
1589 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
742e7a93 | 1590 | eth_broadcast_addr(frame->da); |
0cdc2136 | 1591 | memcpy(frame->sa, ta, ETH_ALEN); |
742e7a93 | 1592 | eth_broadcast_addr(frame->bssid); |
0cdc2136 SG |
1593 | frame->seq_ctrl = 0; |
1594 | ||
1595 | len += 24; | |
1596 | ||
1597 | /* ...next IE... */ | |
1598 | pos = &frame->u.probe_req.variable[0]; | |
1599 | ||
1600 | /* fill in our indirect SSID IE */ | |
1601 | left -= 2; | |
1602 | if (left < 0) | |
1603 | return 0; | |
1604 | *pos++ = WLAN_EID_SSID; | |
1605 | *pos++ = 0; | |
1606 | ||
1607 | len += 2; | |
1608 | ||
1609 | if (WARN_ON(left < ie_len)) | |
1610 | return len; | |
1611 | ||
1612 | if (ies && ie_len) { | |
1613 | memcpy(pos, ies, ie_len); | |
1614 | len += ie_len; | |
1615 | } | |
1616 | ||
e7392364 | 1617 | return (u16) len; |
0cdc2136 SG |
1618 | } |
1619 | EXPORT_SYMBOL(il_fill_probe_req); | |
1620 | ||
e7392364 SG |
1621 | static void |
1622 | il_bg_abort_scan(struct work_struct *work) | |
0cdc2136 SG |
1623 | { |
1624 | struct il_priv *il = container_of(work, struct il_priv, abort_scan); | |
1625 | ||
1626 | D_SCAN("Abort scan work\n"); | |
1627 | ||
1628 | /* We keep scan_check work queued in case when firmware will not | |
1629 | * report back scan completed notification */ | |
1630 | mutex_lock(&il->mutex); | |
1631 | il_scan_cancel_timeout(il, 200); | |
1632 | mutex_unlock(&il->mutex); | |
1633 | } | |
1634 | ||
e7392364 SG |
1635 | static void |
1636 | il_bg_scan_completed(struct work_struct *work) | |
0cdc2136 | 1637 | { |
e7392364 | 1638 | struct il_priv *il = container_of(work, struct il_priv, scan_completed); |
0cdc2136 SG |
1639 | bool aborted; |
1640 | ||
1641 | D_SCAN("Completed scan.\n"); | |
1642 | ||
1643 | cancel_delayed_work(&il->scan_check); | |
1644 | ||
1645 | mutex_lock(&il->mutex); | |
1646 | ||
1647 | aborted = test_and_clear_bit(S_SCAN_ABORTING, &il->status); | |
1648 | if (aborted) | |
1649 | D_SCAN("Aborted scan completed.\n"); | |
1650 | ||
1651 | if (!test_and_clear_bit(S_SCANNING, &il->status)) { | |
1652 | D_SCAN("Scan already completed.\n"); | |
1653 | goto out_settings; | |
1654 | } | |
1655 | ||
1656 | il_complete_scan(il, aborted); | |
1657 | ||
1658 | out_settings: | |
1659 | /* Can we still talk to firmware ? */ | |
1660 | if (!il_is_ready_rf(il)) | |
1661 | goto out; | |
1662 | ||
1663 | /* | |
1664 | * We do not commit power settings while scan is pending, | |
1665 | * do it now if the settings changed. | |
1666 | */ | |
1667 | il_power_set_mode(il, &il->power_data.sleep_cmd_next, false); | |
1668 | il_set_tx_power(il, il->tx_power_next, false); | |
1669 | ||
c9363551 | 1670 | il->ops->post_scan(il); |
0cdc2136 SG |
1671 | |
1672 | out: | |
1673 | mutex_unlock(&il->mutex); | |
1674 | } | |
1675 | ||
e7392364 SG |
1676 | void |
1677 | il_setup_scan_deferred_work(struct il_priv *il) | |
0cdc2136 SG |
1678 | { |
1679 | INIT_WORK(&il->scan_completed, il_bg_scan_completed); | |
1680 | INIT_WORK(&il->abort_scan, il_bg_abort_scan); | |
1681 | INIT_DELAYED_WORK(&il->scan_check, il_bg_scan_check); | |
1682 | } | |
1683 | EXPORT_SYMBOL(il_setup_scan_deferred_work); | |
1684 | ||
e7392364 SG |
1685 | void |
1686 | il_cancel_scan_deferred_work(struct il_priv *il) | |
0cdc2136 SG |
1687 | { |
1688 | cancel_work_sync(&il->abort_scan); | |
1689 | cancel_work_sync(&il->scan_completed); | |
1690 | ||
1691 | if (cancel_delayed_work_sync(&il->scan_check)) { | |
1692 | mutex_lock(&il->mutex); | |
1693 | il_force_scan_end(il); | |
1694 | mutex_unlock(&il->mutex); | |
1695 | } | |
1696 | } | |
1697 | EXPORT_SYMBOL(il_cancel_scan_deferred_work); | |
1698 | ||
1699 | /* il->sta_lock must be held */ | |
e7392364 SG |
1700 | static void |
1701 | il_sta_ucode_activate(struct il_priv *il, u8 sta_id) | |
0cdc2136 SG |
1702 | { |
1703 | ||
1704 | if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) | |
e7392364 SG |
1705 | IL_ERR("ACTIVATE a non DRIVER active station id %u addr %pM\n", |
1706 | sta_id, il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1707 | |
1708 | if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) { | |
e7392364 SG |
1709 | D_ASSOC("STA id %u addr %pM already present" |
1710 | " in uCode (according to driver)\n", sta_id, | |
1711 | il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1712 | } else { |
1713 | il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE; | |
e7392364 SG |
1714 | D_ASSOC("Added STA id %u addr %pM to uCode\n", sta_id, |
1715 | il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1716 | } |
1717 | } | |
1718 | ||
e7392364 SG |
1719 | static int |
1720 | il_process_add_sta_resp(struct il_priv *il, struct il_addsta_cmd *addsta, | |
1721 | struct il_rx_pkt *pkt, bool sync) | |
0cdc2136 SG |
1722 | { |
1723 | u8 sta_id = addsta->sta.sta_id; | |
1724 | unsigned long flags; | |
1725 | int ret = -EIO; | |
1726 | ||
1727 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { | |
e7392364 | 1728 | IL_ERR("Bad return from C_ADD_STA (0x%08X)\n", pkt->hdr.flags); |
0cdc2136 SG |
1729 | return ret; |
1730 | } | |
1731 | ||
e7392364 | 1732 | D_INFO("Processing response for adding station %u\n", sta_id); |
0cdc2136 SG |
1733 | |
1734 | spin_lock_irqsave(&il->sta_lock, flags); | |
1735 | ||
1736 | switch (pkt->u.add_sta.status) { | |
1737 | case ADD_STA_SUCCESS_MSK: | |
1738 | D_INFO("C_ADD_STA PASSED\n"); | |
1739 | il_sta_ucode_activate(il, sta_id); | |
1740 | ret = 0; | |
1741 | break; | |
1742 | case ADD_STA_NO_ROOM_IN_TBL: | |
e7392364 | 1743 | IL_ERR("Adding station %d failed, no room in table.\n", sta_id); |
0cdc2136 SG |
1744 | break; |
1745 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
e7392364 SG |
1746 | IL_ERR("Adding station %d failed, no block ack resource.\n", |
1747 | sta_id); | |
0cdc2136 SG |
1748 | break; |
1749 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
1750 | IL_ERR("Attempting to modify non-existing station %d\n", | |
e7392364 | 1751 | sta_id); |
0cdc2136 SG |
1752 | break; |
1753 | default: | |
e7392364 | 1754 | D_ASSOC("Received C_ADD_STA:(0x%08X)\n", pkt->u.add_sta.status); |
0cdc2136 SG |
1755 | break; |
1756 | } | |
1757 | ||
1758 | D_INFO("%s station id %u addr %pM\n", | |
e7392364 SG |
1759 | il->stations[sta_id].sta.mode == |
1760 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", sta_id, | |
1761 | il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1762 | |
1763 | /* | |
1764 | * XXX: The MAC address in the command buffer is often changed from | |
1765 | * the original sent to the device. That is, the MAC address | |
1766 | * written to the command buffer often is not the same MAC address | |
1767 | * read from the command buffer when the command returns. This | |
1768 | * issue has not yet been resolved and this debugging is left to | |
1769 | * observe the problem. | |
1770 | */ | |
1771 | D_INFO("%s station according to cmd buffer %pM\n", | |
e7392364 SG |
1772 | il->stations[sta_id].sta.mode == |
1773 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", addsta->sta.addr); | |
0cdc2136 SG |
1774 | spin_unlock_irqrestore(&il->sta_lock, flags); |
1775 | ||
1776 | return ret; | |
1777 | } | |
1778 | ||
e7392364 SG |
1779 | static void |
1780 | il_add_sta_callback(struct il_priv *il, struct il_device_cmd *cmd, | |
1781 | struct il_rx_pkt *pkt) | |
0cdc2136 | 1782 | { |
e7392364 | 1783 | struct il_addsta_cmd *addsta = (struct il_addsta_cmd *)cmd->cmd.payload; |
0cdc2136 SG |
1784 | |
1785 | il_process_add_sta_resp(il, addsta, pkt, false); | |
1786 | ||
1787 | } | |
1788 | ||
e7392364 SG |
1789 | int |
1790 | il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags) | |
0cdc2136 SG |
1791 | { |
1792 | struct il_rx_pkt *pkt = NULL; | |
1793 | int ret = 0; | |
1794 | u8 data[sizeof(*sta)]; | |
1795 | struct il_host_cmd cmd = { | |
1796 | .id = C_ADD_STA, | |
1797 | .flags = flags, | |
1798 | .data = data, | |
1799 | }; | |
1800 | u8 sta_id __maybe_unused = sta->sta.sta_id; | |
1801 | ||
e7392364 SG |
1802 | D_INFO("Adding sta %u (%pM) %ssynchronously\n", sta_id, sta->sta.addr, |
1803 | flags & CMD_ASYNC ? "a" : ""); | |
0cdc2136 SG |
1804 | |
1805 | if (flags & CMD_ASYNC) | |
1806 | cmd.callback = il_add_sta_callback; | |
1807 | else { | |
1808 | cmd.flags |= CMD_WANT_SKB; | |
1809 | might_sleep(); | |
1810 | } | |
1811 | ||
c9363551 | 1812 | cmd.len = il->ops->build_addsta_hcmd(sta, data); |
0cdc2136 SG |
1813 | ret = il_send_cmd(il, &cmd); |
1814 | ||
1815 | if (ret || (flags & CMD_ASYNC)) | |
1816 | return ret; | |
1817 | ||
1818 | if (ret == 0) { | |
1819 | pkt = (struct il_rx_pkt *)cmd.reply_page; | |
1820 | ret = il_process_add_sta_resp(il, sta, pkt, true); | |
1821 | } | |
1822 | il_free_pages(il, cmd.reply_page); | |
1823 | ||
1824 | return ret; | |
1825 | } | |
1826 | EXPORT_SYMBOL(il_send_add_sta); | |
1827 | ||
e7392364 | 1828 | static void |
83007196 | 1829 | il_set_ht_add_station(struct il_priv *il, u8 idx, struct ieee80211_sta *sta) |
0cdc2136 SG |
1830 | { |
1831 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; | |
1832 | __le32 sta_flags; | |
0cdc2136 SG |
1833 | |
1834 | if (!sta || !sta_ht_inf->ht_supported) | |
1835 | goto done; | |
1836 | ||
0cdc2136 | 1837 | D_ASSOC("spatial multiplexing power save mode: %s\n", |
af0ed69b JB |
1838 | (sta->smps_mode == IEEE80211_SMPS_STATIC) ? "static" : |
1839 | (sta->smps_mode == IEEE80211_SMPS_DYNAMIC) ? "dynamic" : | |
1722f8e1 | 1840 | "disabled"); |
0cdc2136 SG |
1841 | |
1842 | sta_flags = il->stations[idx].sta.station_flags; | |
1843 | ||
1844 | sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); | |
1845 | ||
af0ed69b JB |
1846 | switch (sta->smps_mode) { |
1847 | case IEEE80211_SMPS_STATIC: | |
0cdc2136 SG |
1848 | sta_flags |= STA_FLG_MIMO_DIS_MSK; |
1849 | break; | |
af0ed69b | 1850 | case IEEE80211_SMPS_DYNAMIC: |
0cdc2136 SG |
1851 | sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
1852 | break; | |
af0ed69b | 1853 | case IEEE80211_SMPS_OFF: |
0cdc2136 SG |
1854 | break; |
1855 | default: | |
af0ed69b | 1856 | IL_WARN("Invalid MIMO PS mode %d\n", sta->smps_mode); |
0cdc2136 SG |
1857 | break; |
1858 | } | |
1859 | ||
e7392364 SG |
1860 | sta_flags |= |
1861 | cpu_to_le32((u32) sta_ht_inf-> | |
1862 | ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
0cdc2136 | 1863 | |
e7392364 SG |
1864 | sta_flags |= |
1865 | cpu_to_le32((u32) sta_ht_inf-> | |
1866 | ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
0cdc2136 | 1867 | |
83007196 | 1868 | if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) |
0cdc2136 SG |
1869 | sta_flags |= STA_FLG_HT40_EN_MSK; |
1870 | else | |
1871 | sta_flags &= ~STA_FLG_HT40_EN_MSK; | |
1872 | ||
1873 | il->stations[idx].sta.station_flags = sta_flags; | |
e7392364 | 1874 | done: |
0cdc2136 SG |
1875 | return; |
1876 | } | |
1877 | ||
1878 | /** | |
1879 | * il_prep_station - Prepare station information for addition | |
1880 | * | |
1881 | * should be called with sta_lock held | |
1882 | */ | |
e7392364 | 1883 | u8 |
83007196 SG |
1884 | il_prep_station(struct il_priv *il, const u8 *addr, bool is_ap, |
1885 | struct ieee80211_sta *sta) | |
0cdc2136 SG |
1886 | { |
1887 | struct il_station_entry *station; | |
1888 | int i; | |
1889 | u8 sta_id = IL_INVALID_STATION; | |
1890 | u16 rate; | |
1891 | ||
1892 | if (is_ap) | |
8f9e5645 | 1893 | sta_id = IL_AP_ID; |
0cdc2136 | 1894 | else if (is_broadcast_ether_addr(addr)) |
b16db50a | 1895 | sta_id = il->hw_params.bcast_id; |
0cdc2136 SG |
1896 | else |
1897 | for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) { | |
2e42e474 JP |
1898 | if (ether_addr_equal(il->stations[i].sta.sta.addr, |
1899 | addr)) { | |
0cdc2136 SG |
1900 | sta_id = i; |
1901 | break; | |
1902 | } | |
1903 | ||
1904 | if (!il->stations[i].used && | |
1905 | sta_id == IL_INVALID_STATION) | |
1906 | sta_id = i; | |
1907 | } | |
1908 | ||
1909 | /* | |
1910 | * These two conditions have the same outcome, but keep them | |
1911 | * separate | |
1912 | */ | |
1913 | if (unlikely(sta_id == IL_INVALID_STATION)) | |
1914 | return sta_id; | |
1915 | ||
1916 | /* | |
1917 | * uCode is not able to deal with multiple requests to add a | |
1918 | * station. Keep track if one is in progress so that we do not send | |
1919 | * another. | |
1920 | */ | |
1921 | if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { | |
e7392364 | 1922 | D_INFO("STA %d already in process of being added.\n", sta_id); |
0cdc2136 SG |
1923 | return sta_id; |
1924 | } | |
1925 | ||
1926 | if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && | |
1927 | (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) && | |
2e42e474 | 1928 | ether_addr_equal(il->stations[sta_id].sta.sta.addr, addr)) { |
e7392364 SG |
1929 | D_ASSOC("STA %d (%pM) already added, not adding again.\n", |
1930 | sta_id, addr); | |
0cdc2136 SG |
1931 | return sta_id; |
1932 | } | |
1933 | ||
1934 | station = &il->stations[sta_id]; | |
1935 | station->used = IL_STA_DRIVER_ACTIVE; | |
e7392364 | 1936 | D_ASSOC("Add STA to driver ID %d: %pM\n", sta_id, addr); |
0cdc2136 SG |
1937 | il->num_stations++; |
1938 | ||
1939 | /* Set up the C_ADD_STA command to send to device */ | |
1940 | memset(&station->sta, 0, sizeof(struct il_addsta_cmd)); | |
1941 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
1942 | station->sta.mode = 0; | |
1943 | station->sta.sta.sta_id = sta_id; | |
fd6415bc | 1944 | station->sta.station_flags = 0; |
0cdc2136 | 1945 | |
0cdc2136 SG |
1946 | /* |
1947 | * OK to call unconditionally, since local stations (IBSS BSSID | |
1948 | * STA and broadcast STA) pass in a NULL sta, and mac80211 | |
1949 | * doesn't allow HT IBSS. | |
1950 | */ | |
83007196 | 1951 | il_set_ht_add_station(il, sta_id, sta); |
0cdc2136 SG |
1952 | |
1953 | /* 3945 only */ | |
e7392364 | 1954 | rate = (il->band == IEEE80211_BAND_5GHZ) ? RATE_6M_PLCP : RATE_1M_PLCP; |
0cdc2136 SG |
1955 | /* Turn on both antennas for the station... */ |
1956 | station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK); | |
1957 | ||
1958 | return sta_id; | |
1959 | ||
1960 | } | |
1961 | EXPORT_SYMBOL_GPL(il_prep_station); | |
1962 | ||
1963 | #define STA_WAIT_TIMEOUT (HZ/2) | |
1964 | ||
1965 | /** | |
1966 | * il_add_station_common - | |
1967 | */ | |
1968 | int | |
83007196 SG |
1969 | il_add_station_common(struct il_priv *il, const u8 *addr, bool is_ap, |
1970 | struct ieee80211_sta *sta, u8 *sta_id_r) | |
0cdc2136 SG |
1971 | { |
1972 | unsigned long flags_spin; | |
1973 | int ret = 0; | |
1974 | u8 sta_id; | |
1975 | struct il_addsta_cmd sta_cmd; | |
1976 | ||
1977 | *sta_id_r = 0; | |
1978 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
83007196 | 1979 | sta_id = il_prep_station(il, addr, is_ap, sta); |
0cdc2136 | 1980 | if (sta_id == IL_INVALID_STATION) { |
e7392364 | 1981 | IL_ERR("Unable to prepare station %pM for addition\n", addr); |
0cdc2136 SG |
1982 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
1983 | return -EINVAL; | |
1984 | } | |
1985 | ||
1986 | /* | |
1987 | * uCode is not able to deal with multiple requests to add a | |
1988 | * station. Keep track if one is in progress so that we do not send | |
1989 | * another. | |
1990 | */ | |
1991 | if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { | |
e7392364 | 1992 | D_INFO("STA %d already in process of being added.\n", sta_id); |
0cdc2136 SG |
1993 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
1994 | return -EEXIST; | |
1995 | } | |
1996 | ||
1997 | if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && | |
1998 | (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { | |
e7392364 | 1999 | D_ASSOC("STA %d (%pM) already added, not adding again.\n", |
0cdc2136 SG |
2000 | sta_id, addr); |
2001 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2002 | return -EEXIST; | |
2003 | } | |
2004 | ||
2005 | il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS; | |
2006 | memcpy(&sta_cmd, &il->stations[sta_id].sta, | |
e7392364 | 2007 | sizeof(struct il_addsta_cmd)); |
0cdc2136 SG |
2008 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
2009 | ||
2010 | /* Add station to device's station table */ | |
2011 | ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); | |
2012 | if (ret) { | |
2013 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2014 | IL_ERR("Adding station %pM failed.\n", | |
e7392364 | 2015 | il->stations[sta_id].sta.sta.addr); |
0cdc2136 SG |
2016 | il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; |
2017 | il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS; | |
2018 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2019 | } | |
2020 | *sta_id_r = sta_id; | |
2021 | return ret; | |
2022 | } | |
2023 | EXPORT_SYMBOL(il_add_station_common); | |
2024 | ||
2025 | /** | |
2026 | * il_sta_ucode_deactivate - deactivate ucode status for a station | |
2027 | * | |
2028 | * il->sta_lock must be held | |
2029 | */ | |
e7392364 SG |
2030 | static void |
2031 | il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id) | |
0cdc2136 SG |
2032 | { |
2033 | /* Ucode must be active and driver must be non active */ | |
e7392364 SG |
2034 | if ((il->stations[sta_id]. |
2035 | used & (IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) != | |
2036 | IL_STA_UCODE_ACTIVE) | |
0cdc2136 SG |
2037 | IL_ERR("removed non active STA %u\n", sta_id); |
2038 | ||
2039 | il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE; | |
2040 | ||
2041 | memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry)); | |
2042 | D_ASSOC("Removed STA %u\n", sta_id); | |
2043 | } | |
2044 | ||
e7392364 SG |
2045 | static int |
2046 | il_send_remove_station(struct il_priv *il, const u8 * addr, int sta_id, | |
2047 | bool temporary) | |
0cdc2136 SG |
2048 | { |
2049 | struct il_rx_pkt *pkt; | |
2050 | int ret; | |
2051 | ||
2052 | unsigned long flags_spin; | |
2053 | struct il_rem_sta_cmd rm_sta_cmd; | |
2054 | ||
2055 | struct il_host_cmd cmd = { | |
2056 | .id = C_REM_STA, | |
2057 | .len = sizeof(struct il_rem_sta_cmd), | |
2058 | .flags = CMD_SYNC, | |
2059 | .data = &rm_sta_cmd, | |
2060 | }; | |
2061 | ||
2062 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
2063 | rm_sta_cmd.num_sta = 1; | |
2064 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); | |
2065 | ||
2066 | cmd.flags |= CMD_WANT_SKB; | |
2067 | ||
2068 | ret = il_send_cmd(il, &cmd); | |
2069 | ||
2070 | if (ret) | |
2071 | return ret; | |
2072 | ||
2073 | pkt = (struct il_rx_pkt *)cmd.reply_page; | |
2074 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { | |
e7392364 | 2075 | IL_ERR("Bad return from C_REM_STA (0x%08X)\n", pkt->hdr.flags); |
0cdc2136 SG |
2076 | ret = -EIO; |
2077 | } | |
2078 | ||
2079 | if (!ret) { | |
2080 | switch (pkt->u.rem_sta.status) { | |
2081 | case REM_STA_SUCCESS_MSK: | |
2082 | if (!temporary) { | |
2083 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2084 | il_sta_ucode_deactivate(il, sta_id); | |
2085 | spin_unlock_irqrestore(&il->sta_lock, | |
e7392364 | 2086 | flags_spin); |
0cdc2136 SG |
2087 | } |
2088 | D_ASSOC("C_REM_STA PASSED\n"); | |
2089 | break; | |
2090 | default: | |
2091 | ret = -EIO; | |
2092 | IL_ERR("C_REM_STA failed\n"); | |
2093 | break; | |
2094 | } | |
2095 | } | |
2096 | il_free_pages(il, cmd.reply_page); | |
2097 | ||
2098 | return ret; | |
2099 | } | |
2100 | ||
2101 | /** | |
2102 | * il_remove_station - Remove driver's knowledge of station. | |
2103 | */ | |
e7392364 SG |
2104 | int |
2105 | il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr) | |
0cdc2136 SG |
2106 | { |
2107 | unsigned long flags; | |
2108 | ||
2109 | if (!il_is_ready(il)) { | |
e7392364 SG |
2110 | D_INFO("Unable to remove station %pM, device not ready.\n", |
2111 | addr); | |
0cdc2136 SG |
2112 | /* |
2113 | * It is typical for stations to be removed when we are | |
2114 | * going down. Return success since device will be down | |
2115 | * soon anyway | |
2116 | */ | |
2117 | return 0; | |
2118 | } | |
2119 | ||
e7392364 | 2120 | D_ASSOC("Removing STA from driver:%d %pM\n", sta_id, addr); |
0cdc2136 SG |
2121 | |
2122 | if (WARN_ON(sta_id == IL_INVALID_STATION)) | |
2123 | return -EINVAL; | |
2124 | ||
2125 | spin_lock_irqsave(&il->sta_lock, flags); | |
2126 | ||
2127 | if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) { | |
e7392364 | 2128 | D_INFO("Removing %pM but non DRIVER active\n", addr); |
0cdc2136 SG |
2129 | goto out_err; |
2130 | } | |
2131 | ||
2132 | if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { | |
e7392364 | 2133 | D_INFO("Removing %pM but non UCODE active\n", addr); |
0cdc2136 SG |
2134 | goto out_err; |
2135 | } | |
2136 | ||
2137 | if (il->stations[sta_id].used & IL_STA_LOCAL) { | |
2138 | kfree(il->stations[sta_id].lq); | |
2139 | il->stations[sta_id].lq = NULL; | |
2140 | } | |
2141 | ||
2142 | il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; | |
2143 | ||
2144 | il->num_stations--; | |
2145 | ||
2146 | BUG_ON(il->num_stations < 0); | |
2147 | ||
2148 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
2149 | ||
2150 | return il_send_remove_station(il, addr, sta_id, false); | |
2151 | out_err: | |
2152 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
2153 | return -EINVAL; | |
2154 | } | |
2155 | EXPORT_SYMBOL_GPL(il_remove_station); | |
2156 | ||
2157 | /** | |
2158 | * il_clear_ucode_stations - clear ucode station table bits | |
2159 | * | |
2160 | * This function clears all the bits in the driver indicating | |
2161 | * which stations are active in the ucode. Call when something | |
2162 | * other than explicit station management would cause this in | |
2163 | * the ucode, e.g. unassociated RXON. | |
2164 | */ | |
e7392364 | 2165 | void |
83007196 | 2166 | il_clear_ucode_stations(struct il_priv *il) |
0cdc2136 SG |
2167 | { |
2168 | int i; | |
2169 | unsigned long flags_spin; | |
2170 | bool cleared = false; | |
2171 | ||
2172 | D_INFO("Clearing ucode stations in driver\n"); | |
2173 | ||
2174 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2175 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
0cdc2136 | 2176 | if (il->stations[i].used & IL_STA_UCODE_ACTIVE) { |
e7392364 | 2177 | D_INFO("Clearing ucode active for station %d\n", i); |
0cdc2136 SG |
2178 | il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; |
2179 | cleared = true; | |
2180 | } | |
2181 | } | |
2182 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2183 | ||
2184 | if (!cleared) | |
e7392364 | 2185 | D_INFO("No active stations found to be cleared\n"); |
0cdc2136 SG |
2186 | } |
2187 | EXPORT_SYMBOL(il_clear_ucode_stations); | |
2188 | ||
2189 | /** | |
2190 | * il_restore_stations() - Restore driver known stations to device | |
2191 | * | |
2192 | * All stations considered active by driver, but not present in ucode, is | |
2193 | * restored. | |
2194 | * | |
2195 | * Function sleeps. | |
2196 | */ | |
2197 | void | |
83007196 | 2198 | il_restore_stations(struct il_priv *il) |
0cdc2136 SG |
2199 | { |
2200 | struct il_addsta_cmd sta_cmd; | |
2201 | struct il_link_quality_cmd lq; | |
2202 | unsigned long flags_spin; | |
2203 | int i; | |
2204 | bool found = false; | |
2205 | int ret; | |
2206 | bool send_lq; | |
2207 | ||
2208 | if (!il_is_ready(il)) { | |
e7392364 | 2209 | D_INFO("Not ready yet, not restoring any stations.\n"); |
0cdc2136 SG |
2210 | return; |
2211 | } | |
2212 | ||
2213 | D_ASSOC("Restoring all known stations ... start.\n"); | |
2214 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2215 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
0cdc2136 SG |
2216 | if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) && |
2217 | !(il->stations[i].used & IL_STA_UCODE_ACTIVE)) { | |
2218 | D_ASSOC("Restoring sta %pM\n", | |
e7392364 | 2219 | il->stations[i].sta.sta.addr); |
0cdc2136 SG |
2220 | il->stations[i].sta.mode = 0; |
2221 | il->stations[i].used |= IL_STA_UCODE_INPROGRESS; | |
2222 | found = true; | |
2223 | } | |
2224 | } | |
2225 | ||
2226 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
2227 | if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) { | |
2228 | memcpy(&sta_cmd, &il->stations[i].sta, | |
2229 | sizeof(struct il_addsta_cmd)); | |
2230 | send_lq = false; | |
2231 | if (il->stations[i].lq) { | |
2232 | memcpy(&lq, il->stations[i].lq, | |
2233 | sizeof(struct il_link_quality_cmd)); | |
2234 | send_lq = true; | |
2235 | } | |
2236 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2237 | ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); | |
2238 | if (ret) { | |
2239 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2240 | IL_ERR("Adding station %pM failed.\n", | |
e7392364 SG |
2241 | il->stations[i].sta.sta.addr); |
2242 | il->stations[i].used &= ~IL_STA_DRIVER_ACTIVE; | |
0cdc2136 | 2243 | il->stations[i].used &= |
e7392364 | 2244 | ~IL_STA_UCODE_INPROGRESS; |
0cdc2136 | 2245 | spin_unlock_irqrestore(&il->sta_lock, |
e7392364 | 2246 | flags_spin); |
0cdc2136 SG |
2247 | } |
2248 | /* | |
2249 | * Rate scaling has already been initialized, send | |
2250 | * current LQ command | |
2251 | */ | |
2252 | if (send_lq) | |
83007196 | 2253 | il_send_lq_cmd(il, &lq, CMD_SYNC, true); |
0cdc2136 SG |
2254 | spin_lock_irqsave(&il->sta_lock, flags_spin); |
2255 | il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS; | |
2256 | } | |
2257 | } | |
2258 | ||
2259 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2260 | if (!found) | |
2261 | D_INFO("Restoring all known stations" | |
e7392364 | 2262 | " .... no stations to be restored.\n"); |
0cdc2136 | 2263 | else |
e7392364 | 2264 | D_INFO("Restoring all known stations" " .... complete.\n"); |
0cdc2136 SG |
2265 | } |
2266 | EXPORT_SYMBOL(il_restore_stations); | |
2267 | ||
e7392364 SG |
2268 | int |
2269 | il_get_free_ucode_key_idx(struct il_priv *il) | |
0cdc2136 SG |
2270 | { |
2271 | int i; | |
2272 | ||
2273 | for (i = 0; i < il->sta_key_max_num; i++) | |
2274 | if (!test_and_set_bit(i, &il->ucode_key_table)) | |
2275 | return i; | |
2276 | ||
2277 | return WEP_INVALID_OFFSET; | |
2278 | } | |
2279 | EXPORT_SYMBOL(il_get_free_ucode_key_idx); | |
2280 | ||
e7392364 SG |
2281 | void |
2282 | il_dealloc_bcast_stations(struct il_priv *il) | |
0cdc2136 SG |
2283 | { |
2284 | unsigned long flags; | |
2285 | int i; | |
2286 | ||
2287 | spin_lock_irqsave(&il->sta_lock, flags); | |
2288 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
2289 | if (!(il->stations[i].used & IL_STA_BCAST)) | |
2290 | continue; | |
2291 | ||
2292 | il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; | |
2293 | il->num_stations--; | |
2294 | BUG_ON(il->num_stations < 0); | |
2295 | kfree(il->stations[i].lq); | |
2296 | il->stations[i].lq = NULL; | |
2297 | } | |
2298 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
2299 | } | |
2300 | EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations); | |
2301 | ||
2302 | #ifdef CONFIG_IWLEGACY_DEBUG | |
e7392364 SG |
2303 | static void |
2304 | il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) | |
0cdc2136 SG |
2305 | { |
2306 | int i; | |
2307 | D_RATE("lq station id 0x%x\n", lq->sta_id); | |
e7392364 SG |
2308 | D_RATE("lq ant 0x%X 0x%X\n", lq->general_params.single_stream_ant_msk, |
2309 | lq->general_params.dual_stream_ant_msk); | |
0cdc2136 SG |
2310 | |
2311 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
e7392364 | 2312 | D_RATE("lq idx %d 0x%X\n", i, lq->rs_table[i].rate_n_flags); |
0cdc2136 SG |
2313 | } |
2314 | #else | |
e7392364 SG |
2315 | static inline void |
2316 | il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) | |
0cdc2136 SG |
2317 | { |
2318 | } | |
2319 | #endif | |
2320 | ||
2321 | /** | |
2322 | * il_is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
2323 | * | |
2324 | * It sometimes happens when a HT rate has been in use and we | |
2325 | * loose connectivity with AP then mac80211 will first tell us that the | |
2326 | * current channel is not HT anymore before removing the station. In such a | |
2327 | * scenario the RXON flags will be updated to indicate we are not | |
2328 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
2329 | * Test for this to prevent driver from sending LQ command between the time | |
2330 | * RXON flags are updated and when LQ command is updated. | |
2331 | */ | |
e7392364 | 2332 | static bool |
83007196 | 2333 | il_is_lq_table_valid(struct il_priv *il, struct il_link_quality_cmd *lq) |
0cdc2136 SG |
2334 | { |
2335 | int i; | |
2336 | ||
1c03c462 | 2337 | if (il->ht.enabled) |
0cdc2136 SG |
2338 | return true; |
2339 | ||
c8b03958 | 2340 | D_INFO("Channel %u is not an HT channel\n", il->active.channel); |
0cdc2136 | 2341 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
e7392364 SG |
2342 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) { |
2343 | D_INFO("idx %d of LQ expects HT channel\n", i); | |
0cdc2136 SG |
2344 | return false; |
2345 | } | |
2346 | } | |
2347 | return true; | |
2348 | } | |
2349 | ||
2350 | /** | |
2351 | * il_send_lq_cmd() - Send link quality command | |
2352 | * @init: This command is sent as part of station initialization right | |
2353 | * after station has been added. | |
2354 | * | |
2355 | * The link quality command is sent as the last step of station creation. | |
2356 | * This is the special case in which init is set and we call a callback in | |
2357 | * this case to clear the state indicating that station creation is in | |
2358 | * progress. | |
2359 | */ | |
e7392364 | 2360 | int |
83007196 SG |
2361 | il_send_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq, |
2362 | u8 flags, bool init) | |
0cdc2136 SG |
2363 | { |
2364 | int ret = 0; | |
2365 | unsigned long flags_spin; | |
2366 | ||
2367 | struct il_host_cmd cmd = { | |
2368 | .id = C_TX_LINK_QUALITY_CMD, | |
2369 | .len = sizeof(struct il_link_quality_cmd), | |
2370 | .flags = flags, | |
2371 | .data = lq, | |
2372 | }; | |
2373 | ||
2374 | if (WARN_ON(lq->sta_id == IL_INVALID_STATION)) | |
2375 | return -EINVAL; | |
2376 | ||
0cdc2136 SG |
2377 | spin_lock_irqsave(&il->sta_lock, flags_spin); |
2378 | if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) { | |
2379 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2380 | return -EINVAL; | |
2381 | } | |
2382 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2383 | ||
2384 | il_dump_lq_cmd(il, lq); | |
2385 | BUG_ON(init && (cmd.flags & CMD_ASYNC)); | |
2386 | ||
83007196 | 2387 | if (il_is_lq_table_valid(il, lq)) |
0cdc2136 SG |
2388 | ret = il_send_cmd(il, &cmd); |
2389 | else | |
2390 | ret = -EINVAL; | |
2391 | ||
2392 | if (cmd.flags & CMD_ASYNC) | |
2393 | return ret; | |
2394 | ||
2395 | if (init) { | |
2396 | D_INFO("init LQ command complete," | |
e7392364 SG |
2397 | " clearing sta addition status for sta %d\n", |
2398 | lq->sta_id); | |
0cdc2136 SG |
2399 | spin_lock_irqsave(&il->sta_lock, flags_spin); |
2400 | il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS; | |
2401 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2402 | } | |
2403 | return ret; | |
2404 | } | |
2405 | EXPORT_SYMBOL(il_send_lq_cmd); | |
2406 | ||
e7392364 SG |
2407 | int |
2408 | il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
2409 | struct ieee80211_sta *sta) | |
0cdc2136 SG |
2410 | { |
2411 | struct il_priv *il = hw->priv; | |
2412 | struct il_station_priv_common *sta_common = (void *)sta->drv_priv; | |
2413 | int ret; | |
2414 | ||
0cdc2136 | 2415 | mutex_lock(&il->mutex); |
9ce7b73c SG |
2416 | D_MAC80211("enter station %pM\n", sta->addr); |
2417 | ||
0cdc2136 SG |
2418 | ret = il_remove_station(il, sta_common->sta_id, sta->addr); |
2419 | if (ret) | |
e7392364 | 2420 | IL_ERR("Error removing station %pM\n", sta->addr); |
9ce7b73c SG |
2421 | |
2422 | D_MAC80211("leave ret %d\n", ret); | |
0cdc2136 | 2423 | mutex_unlock(&il->mutex); |
9ce7b73c | 2424 | |
0cdc2136 SG |
2425 | return ret; |
2426 | } | |
2427 | EXPORT_SYMBOL(il_mac_sta_remove); | |
2428 | ||
2429 | /************************** RX-FUNCTIONS ****************************/ | |
2430 | /* | |
2431 | * Rx theory of operation | |
2432 | * | |
2433 | * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs), | |
2434 | * each of which point to Receive Buffers to be filled by the NIC. These get | |
2435 | * used not only for Rx frames, but for any command response or notification | |
2436 | * from the NIC. The driver and NIC manage the Rx buffers by means | |
2437 | * of idxes into the circular buffer. | |
2438 | * | |
2439 | * Rx Queue Indexes | |
2440 | * The host/firmware share two idx registers for managing the Rx buffers. | |
2441 | * | |
2442 | * The READ idx maps to the first position that the firmware may be writing | |
2443 | * to -- the driver can read up to (but not including) this position and get | |
2444 | * good data. | |
2445 | * The READ idx is managed by the firmware once the card is enabled. | |
2446 | * | |
2447 | * The WRITE idx maps to the last position the driver has read from -- the | |
2448 | * position preceding WRITE is the last slot the firmware can place a packet. | |
2449 | * | |
2450 | * The queue is empty (no good data) if WRITE = READ - 1, and is full if | |
2451 | * WRITE = READ. | |
2452 | * | |
2453 | * During initialization, the host sets up the READ queue position to the first | |
2454 | * IDX position, and WRITE to the last (READ - 1 wrapped) | |
2455 | * | |
2456 | * When the firmware places a packet in a buffer, it will advance the READ idx | |
2457 | * and fire the RX interrupt. The driver can then query the READ idx and | |
2458 | * process as many packets as possible, moving the WRITE idx forward as it | |
2459 | * resets the Rx queue buffers with new memory. | |
2460 | * | |
2461 | * The management in the driver is as follows: | |
2462 | * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When | |
2463 | * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled | |
2464 | * to replenish the iwl->rxq->rx_free. | |
2465 | * + In il_rx_replenish (scheduled) if 'processed' != 'read' then the | |
2466 | * iwl->rxq is replenished and the READ IDX is updated (updating the | |
2467 | * 'processed' and 'read' driver idxes as well) | |
2468 | * + A received packet is processed and handed to the kernel network stack, | |
2469 | * detached from the iwl->rxq. The driver 'processed' idx is updated. | |
2470 | * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free | |
2471 | * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ | |
2472 | * IDX is not incremented and iwl->status(RX_STALLED) is set. If there | |
2473 | * were enough free buffers and RX_STALLED is set it is cleared. | |
2474 | * | |
2475 | * | |
2476 | * Driver sequence: | |
2477 | * | |
2478 | * il_rx_queue_alloc() Allocates rx_free | |
2479 | * il_rx_replenish() Replenishes rx_free list from rx_used, and calls | |
2480 | * il_rx_queue_restock | |
2481 | * il_rx_queue_restock() Moves available buffers from rx_free into Rx | |
2482 | * queue, updates firmware pointers, and updates | |
2483 | * the WRITE idx. If insufficient rx_free buffers | |
2484 | * are available, schedules il_rx_replenish | |
2485 | * | |
2486 | * -- enable interrupts -- | |
2487 | * ISR - il_rx() Detach il_rx_bufs from pool up to the | |
2488 | * READ IDX, detaching the SKB from the pool. | |
2489 | * Moves the packet buffer from queue to rx_used. | |
2490 | * Calls il_rx_queue_restock to refill any empty | |
2491 | * slots. | |
2492 | * ... | |
2493 | * | |
2494 | */ | |
2495 | ||
2496 | /** | |
2497 | * il_rx_queue_space - Return number of free slots available in queue. | |
2498 | */ | |
e7392364 SG |
2499 | int |
2500 | il_rx_queue_space(const struct il_rx_queue *q) | |
0cdc2136 SG |
2501 | { |
2502 | int s = q->read - q->write; | |
2503 | if (s <= 0) | |
2504 | s += RX_QUEUE_SIZE; | |
2505 | /* keep some buffer to not confuse full and empty queue */ | |
2506 | s -= 2; | |
2507 | if (s < 0) | |
2508 | s = 0; | |
2509 | return s; | |
2510 | } | |
2511 | EXPORT_SYMBOL(il_rx_queue_space); | |
2512 | ||
2513 | /** | |
2514 | * il_rx_queue_update_write_ptr - Update the write pointer for the RX queue | |
2515 | */ | |
2516 | void | |
e7392364 | 2517 | il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q) |
0cdc2136 SG |
2518 | { |
2519 | unsigned long flags; | |
2520 | u32 rx_wrt_ptr_reg = il->hw_params.rx_wrt_ptr_reg; | |
2521 | u32 reg; | |
2522 | ||
2523 | spin_lock_irqsave(&q->lock, flags); | |
2524 | ||
2525 | if (q->need_update == 0) | |
2526 | goto exit_unlock; | |
2527 | ||
2528 | /* If power-saving is in use, make sure device is awake */ | |
2529 | if (test_bit(S_POWER_PMI, &il->status)) { | |
2530 | reg = _il_rd(il, CSR_UCODE_DRV_GP1); | |
2531 | ||
2532 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
e7392364 SG |
2533 | D_INFO("Rx queue requesting wakeup," " GP1 = 0x%x\n", |
2534 | reg); | |
0cdc2136 | 2535 | il_set_bit(il, CSR_GP_CNTRL, |
e7392364 | 2536 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
0cdc2136 SG |
2537 | goto exit_unlock; |
2538 | } | |
2539 | ||
2540 | q->write_actual = (q->write & ~0x7); | |
e7392364 | 2541 | il_wr(il, rx_wrt_ptr_reg, q->write_actual); |
0cdc2136 | 2542 | |
e7392364 | 2543 | /* Else device is assumed to be awake */ |
0cdc2136 SG |
2544 | } else { |
2545 | /* Device expects a multiple of 8 */ | |
2546 | q->write_actual = (q->write & ~0x7); | |
e7392364 | 2547 | il_wr(il, rx_wrt_ptr_reg, q->write_actual); |
0cdc2136 SG |
2548 | } |
2549 | ||
2550 | q->need_update = 0; | |
2551 | ||
e7392364 | 2552 | exit_unlock: |
0cdc2136 SG |
2553 | spin_unlock_irqrestore(&q->lock, flags); |
2554 | } | |
2555 | EXPORT_SYMBOL(il_rx_queue_update_write_ptr); | |
2556 | ||
e7392364 SG |
2557 | int |
2558 | il_rx_queue_alloc(struct il_priv *il) | |
0cdc2136 SG |
2559 | { |
2560 | struct il_rx_queue *rxq = &il->rxq; | |
2561 | struct device *dev = &il->pci_dev->dev; | |
2562 | int i; | |
2563 | ||
2564 | spin_lock_init(&rxq->lock); | |
2565 | INIT_LIST_HEAD(&rxq->rx_free); | |
2566 | INIT_LIST_HEAD(&rxq->rx_used); | |
2567 | ||
2568 | /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */ | |
1f9061d2 JP |
2569 | rxq->bd = dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->bd_dma, |
2570 | GFP_KERNEL); | |
0cdc2136 SG |
2571 | if (!rxq->bd) |
2572 | goto err_bd; | |
2573 | ||
1f9061d2 JP |
2574 | rxq->rb_stts = dma_alloc_coherent(dev, sizeof(struct il_rb_status), |
2575 | &rxq->rb_stts_dma, GFP_KERNEL); | |
0cdc2136 SG |
2576 | if (!rxq->rb_stts) |
2577 | goto err_rb; | |
2578 | ||
2579 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
2580 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) | |
2581 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
2582 | ||
2583 | /* Set us so that we have processed and used all buffers, but have | |
2584 | * not restocked the Rx queue with fresh buffers */ | |
2585 | rxq->read = rxq->write = 0; | |
2586 | rxq->write_actual = 0; | |
2587 | rxq->free_count = 0; | |
2588 | rxq->need_update = 0; | |
2589 | return 0; | |
2590 | ||
2591 | err_rb: | |
2592 | dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, | |
2593 | rxq->bd_dma); | |
2594 | err_bd: | |
2595 | return -ENOMEM; | |
2596 | } | |
e7392364 | 2597 | EXPORT_SYMBOL(il_rx_queue_alloc); |
0cdc2136 | 2598 | |
e7392364 SG |
2599 | void |
2600 | il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
2601 | { |
2602 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
2603 | struct il_spectrum_notification *report = &(pkt->u.spectrum_notif); | |
2604 | ||
2605 | if (!report->state) { | |
e7392364 | 2606 | D_11H("Spectrum Measure Notification: Start\n"); |
0cdc2136 SG |
2607 | return; |
2608 | } | |
2609 | ||
2610 | memcpy(&il->measure_report, report, sizeof(*report)); | |
2611 | il->measurement_status |= MEASUREMENT_READY; | |
2612 | } | |
2613 | EXPORT_SYMBOL(il_hdl_spectrum_measurement); | |
2614 | ||
2615 | /* | |
2616 | * returns non-zero if packet should be dropped | |
2617 | */ | |
e7392364 SG |
2618 | int |
2619 | il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr, | |
2620 | u32 decrypt_res, struct ieee80211_rx_status *stats) | |
0cdc2136 SG |
2621 | { |
2622 | u16 fc = le16_to_cpu(hdr->frame_control); | |
2623 | ||
2624 | /* | |
2625 | * All contexts have the same setting here due to it being | |
2626 | * a module parameter, so OK to check any context. | |
2627 | */ | |
c8b03958 | 2628 | if (il->active.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK) |
0cdc2136 SG |
2629 | return 0; |
2630 | ||
2631 | if (!(fc & IEEE80211_FCTL_PROTECTED)) | |
2632 | return 0; | |
2633 | ||
2634 | D_RX("decrypt_res:0x%x\n", decrypt_res); | |
2635 | switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { | |
2636 | case RX_RES_STATUS_SEC_TYPE_TKIP: | |
2637 | /* The uCode has got a bad phase 1 Key, pushes the packet. | |
2638 | * Decryption will be done in SW. */ | |
2639 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
2640 | RX_RES_STATUS_BAD_KEY_TTAK) | |
2641 | break; | |
2642 | ||
2643 | case RX_RES_STATUS_SEC_TYPE_WEP: | |
2644 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
2645 | RX_RES_STATUS_BAD_ICV_MIC) { | |
2646 | /* bad ICV, the packet is destroyed since the | |
2647 | * decryption is inplace, drop it */ | |
2648 | D_RX("Packet destroyed\n"); | |
2649 | return -1; | |
2650 | } | |
2651 | case RX_RES_STATUS_SEC_TYPE_CCMP: | |
2652 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
2653 | RX_RES_STATUS_DECRYPT_OK) { | |
2654 | D_RX("hw decrypt successfully!!!\n"); | |
2655 | stats->flag |= RX_FLAG_DECRYPTED; | |
2656 | } | |
2657 | break; | |
2658 | ||
2659 | default: | |
2660 | break; | |
2661 | } | |
2662 | return 0; | |
2663 | } | |
2664 | EXPORT_SYMBOL(il_set_decrypted_flag); | |
2665 | ||
2666 | /** | |
2667 | * il_txq_update_write_ptr - Send new write idx to hardware | |
2668 | */ | |
2669 | void | |
2670 | il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq) | |
2671 | { | |
2672 | u32 reg = 0; | |
2673 | int txq_id = txq->q.id; | |
2674 | ||
2675 | if (txq->need_update == 0) | |
2676 | return; | |
2677 | ||
2678 | /* if we're trying to save power */ | |
2679 | if (test_bit(S_POWER_PMI, &il->status)) { | |
2680 | /* wake up nic if it's powered down ... | |
2681 | * uCode will wake up, and interrupt us again, so next | |
2682 | * time we'll skip this part. */ | |
2683 | reg = _il_rd(il, CSR_UCODE_DRV_GP1); | |
2684 | ||
2685 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
e7392364 SG |
2686 | D_INFO("Tx queue %d requesting wakeup," " GP1 = 0x%x\n", |
2687 | txq_id, reg); | |
0cdc2136 | 2688 | il_set_bit(il, CSR_GP_CNTRL, |
e7392364 | 2689 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
0cdc2136 SG |
2690 | return; |
2691 | } | |
2692 | ||
e7392364 | 2693 | il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); |
0cdc2136 SG |
2694 | |
2695 | /* | |
2696 | * else not in power-save mode, | |
2697 | * uCode will never sleep when we're | |
2698 | * trying to tx (during RFKILL, we're not trying to tx). | |
2699 | */ | |
2700 | } else | |
e7392364 | 2701 | _il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); |
0cdc2136 SG |
2702 | txq->need_update = 0; |
2703 | } | |
2704 | EXPORT_SYMBOL(il_txq_update_write_ptr); | |
2705 | ||
2706 | /** | |
2707 | * il_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's | |
2708 | */ | |
e7392364 SG |
2709 | void |
2710 | il_tx_queue_unmap(struct il_priv *il, int txq_id) | |
0cdc2136 SG |
2711 | { |
2712 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
2713 | struct il_queue *q = &txq->q; | |
2714 | ||
2715 | if (q->n_bd == 0) | |
2716 | return; | |
2717 | ||
2718 | while (q->write_ptr != q->read_ptr) { | |
1600b875 | 2719 | il->ops->txq_free_tfd(il, txq); |
0cdc2136 SG |
2720 | q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); |
2721 | } | |
2722 | } | |
2723 | EXPORT_SYMBOL(il_tx_queue_unmap); | |
2724 | ||
2725 | /** | |
2726 | * il_tx_queue_free - Deallocate DMA queue. | |
2727 | * @txq: Transmit queue to deallocate. | |
2728 | * | |
2729 | * Empty queue by removing and destroying all BD's. | |
2730 | * Free all buffers. | |
2731 | * 0-fill, but do not free "txq" descriptor structure. | |
2732 | */ | |
e7392364 SG |
2733 | void |
2734 | il_tx_queue_free(struct il_priv *il, int txq_id) | |
0cdc2136 SG |
2735 | { |
2736 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
2737 | struct device *dev = &il->pci_dev->dev; | |
2738 | int i; | |
2739 | ||
2740 | il_tx_queue_unmap(il, txq_id); | |
2741 | ||
2742 | /* De-alloc array of command/tx buffers */ | |
2743 | for (i = 0; i < TFD_TX_CMD_SLOTS; i++) | |
2744 | kfree(txq->cmd[i]); | |
2745 | ||
2746 | /* De-alloc circular buffer of TFDs */ | |
2747 | if (txq->q.n_bd) | |
e7392364 SG |
2748 | dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, |
2749 | txq->tfds, txq->q.dma_addr); | |
0cdc2136 SG |
2750 | |
2751 | /* De-alloc array of per-TFD driver data */ | |
00ea99e1 SG |
2752 | kfree(txq->skbs); |
2753 | txq->skbs = NULL; | |
0cdc2136 SG |
2754 | |
2755 | /* deallocate arrays */ | |
2756 | kfree(txq->cmd); | |
2757 | kfree(txq->meta); | |
2758 | txq->cmd = NULL; | |
2759 | txq->meta = NULL; | |
2760 | ||
2761 | /* 0-fill queue descriptor structure */ | |
2762 | memset(txq, 0, sizeof(*txq)); | |
2763 | } | |
2764 | EXPORT_SYMBOL(il_tx_queue_free); | |
2765 | ||
2766 | /** | |
2767 | * il_cmd_queue_unmap - Unmap any remaining DMA mappings from command queue | |
2768 | */ | |
e7392364 SG |
2769 | void |
2770 | il_cmd_queue_unmap(struct il_priv *il) | |
0cdc2136 SG |
2771 | { |
2772 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
2773 | struct il_queue *q = &txq->q; | |
2774 | int i; | |
2775 | ||
2776 | if (q->n_bd == 0) | |
2777 | return; | |
2778 | ||
2779 | while (q->read_ptr != q->write_ptr) { | |
2780 | i = il_get_cmd_idx(q, q->read_ptr, 0); | |
2781 | ||
2782 | if (txq->meta[i].flags & CMD_MAPPED) { | |
2783 | pci_unmap_single(il->pci_dev, | |
2784 | dma_unmap_addr(&txq->meta[i], mapping), | |
2785 | dma_unmap_len(&txq->meta[i], len), | |
2786 | PCI_DMA_BIDIRECTIONAL); | |
2787 | txq->meta[i].flags = 0; | |
2788 | } | |
2789 | ||
2790 | q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); | |
2791 | } | |
2792 | ||
2793 | i = q->n_win; | |
2794 | if (txq->meta[i].flags & CMD_MAPPED) { | |
2795 | pci_unmap_single(il->pci_dev, | |
2796 | dma_unmap_addr(&txq->meta[i], mapping), | |
2797 | dma_unmap_len(&txq->meta[i], len), | |
2798 | PCI_DMA_BIDIRECTIONAL); | |
2799 | txq->meta[i].flags = 0; | |
2800 | } | |
2801 | } | |
2802 | EXPORT_SYMBOL(il_cmd_queue_unmap); | |
2803 | ||
2804 | /** | |
2805 | * il_cmd_queue_free - Deallocate DMA queue. | |
2806 | * @txq: Transmit queue to deallocate. | |
2807 | * | |
2808 | * Empty queue by removing and destroying all BD's. | |
2809 | * Free all buffers. | |
2810 | * 0-fill, but do not free "txq" descriptor structure. | |
2811 | */ | |
e7392364 SG |
2812 | void |
2813 | il_cmd_queue_free(struct il_priv *il) | |
0cdc2136 SG |
2814 | { |
2815 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
2816 | struct device *dev = &il->pci_dev->dev; | |
2817 | int i; | |
2818 | ||
2819 | il_cmd_queue_unmap(il); | |
2820 | ||
2821 | /* De-alloc array of command/tx buffers */ | |
2822 | for (i = 0; i <= TFD_CMD_SLOTS; i++) | |
2823 | kfree(txq->cmd[i]); | |
2824 | ||
2825 | /* De-alloc circular buffer of TFDs */ | |
2826 | if (txq->q.n_bd) | |
2827 | dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, | |
2828 | txq->tfds, txq->q.dma_addr); | |
2829 | ||
2830 | /* deallocate arrays */ | |
2831 | kfree(txq->cmd); | |
2832 | kfree(txq->meta); | |
2833 | txq->cmd = NULL; | |
2834 | txq->meta = NULL; | |
2835 | ||
2836 | /* 0-fill queue descriptor structure */ | |
2837 | memset(txq, 0, sizeof(*txq)); | |
2838 | } | |
2839 | EXPORT_SYMBOL(il_cmd_queue_free); | |
2840 | ||
2841 | /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** | |
2842 | * DMA services | |
2843 | * | |
2844 | * Theory of operation | |
2845 | * | |
2846 | * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer | |
2847 | * of buffer descriptors, each of which points to one or more data buffers for | |
2848 | * the device to read from or fill. Driver and device exchange status of each | |
2849 | * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty | |
2850 | * entries in each circular buffer, to protect against confusing empty and full | |
2851 | * queue states. | |
2852 | * | |
2853 | * The device reads or writes the data in the queues via the device's several | |
2854 | * DMA/FIFO channels. Each queue is mapped to a single DMA channel. | |
2855 | * | |
2856 | * For Tx queue, there are low mark and high mark limits. If, after queuing | |
2857 | * the packet for Tx, free space become < low mark, Tx queue stopped. When | |
2858 | * reclaiming packets (on 'tx done IRQ), if free space become > high mark, | |
2859 | * Tx queue resumed. | |
2860 | * | |
2861 | * See more detailed info in 4965.h. | |
2862 | ***************************************************/ | |
2863 | ||
e7392364 SG |
2864 | int |
2865 | il_queue_space(const struct il_queue *q) | |
0cdc2136 SG |
2866 | { |
2867 | int s = q->read_ptr - q->write_ptr; | |
2868 | ||
2869 | if (q->read_ptr > q->write_ptr) | |
2870 | s -= q->n_bd; | |
2871 | ||
2872 | if (s <= 0) | |
2873 | s += q->n_win; | |
2874 | /* keep some reserve to not confuse empty and full situations */ | |
2875 | s -= 2; | |
2876 | if (s < 0) | |
2877 | s = 0; | |
2878 | return s; | |
2879 | } | |
2880 | EXPORT_SYMBOL(il_queue_space); | |
2881 | ||
2882 | ||
2883 | /** | |
2884 | * il_queue_init - Initialize queue's high/low-water and read/write idxes | |
2885 | */ | |
e7392364 | 2886 | static int |
d87c771f | 2887 | il_queue_init(struct il_priv *il, struct il_queue *q, int slots, u32 id) |
0cdc2136 | 2888 | { |
d87c771f SG |
2889 | /* |
2890 | * TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise | |
2891 | * il_queue_inc_wrap and il_queue_dec_wrap are broken. | |
2892 | */ | |
2893 | BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); | |
2894 | /* FIXME: remove q->n_bd */ | |
2895 | q->n_bd = TFD_QUEUE_SIZE_MAX; | |
0cdc2136 | 2896 | |
d87c771f SG |
2897 | q->n_win = slots; |
2898 | q->id = id; | |
0cdc2136 | 2899 | |
d87c771f | 2900 | /* slots_must be power-of-two size, otherwise |
0cdc2136 | 2901 | * il_get_cmd_idx is broken. */ |
d87c771f | 2902 | BUG_ON(!is_power_of_2(slots)); |
0cdc2136 SG |
2903 | |
2904 | q->low_mark = q->n_win / 4; | |
2905 | if (q->low_mark < 4) | |
2906 | q->low_mark = 4; | |
2907 | ||
2908 | q->high_mark = q->n_win / 8; | |
2909 | if (q->high_mark < 2) | |
2910 | q->high_mark = 2; | |
2911 | ||
2912 | q->write_ptr = q->read_ptr = 0; | |
2913 | ||
2914 | return 0; | |
2915 | } | |
2916 | ||
2917 | /** | |
2918 | * il_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue | |
2919 | */ | |
e7392364 SG |
2920 | static int |
2921 | il_tx_queue_alloc(struct il_priv *il, struct il_tx_queue *txq, u32 id) | |
0cdc2136 SG |
2922 | { |
2923 | struct device *dev = &il->pci_dev->dev; | |
2924 | size_t tfd_sz = il->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX; | |
2925 | ||
2926 | /* Driver ilate data, only for Tx (not command) queues, | |
2927 | * not shared with device. */ | |
2928 | if (id != il->cmd_queue) { | |
00ea99e1 SG |
2929 | txq->skbs = kcalloc(TFD_QUEUE_SIZE_MAX, sizeof(struct skb *), |
2930 | GFP_KERNEL); | |
2931 | if (!txq->skbs) { | |
2932 | IL_ERR("Fail to alloc skbs\n"); | |
0cdc2136 SG |
2933 | goto error; |
2934 | } | |
00ea99e1 SG |
2935 | } else |
2936 | txq->skbs = NULL; | |
0cdc2136 SG |
2937 | |
2938 | /* Circular buffer of transmit frame descriptors (TFDs), | |
2939 | * shared with device */ | |
e7392364 SG |
2940 | txq->tfds = |
2941 | dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr, GFP_KERNEL); | |
d0320f75 | 2942 | if (!txq->tfds) |
0cdc2136 | 2943 | goto error; |
d0320f75 | 2944 | |
0cdc2136 SG |
2945 | txq->q.id = id; |
2946 | ||
2947 | return 0; | |
2948 | ||
e7392364 | 2949 | error: |
00ea99e1 SG |
2950 | kfree(txq->skbs); |
2951 | txq->skbs = NULL; | |
0cdc2136 SG |
2952 | |
2953 | return -ENOMEM; | |
2954 | } | |
2955 | ||
2956 | /** | |
2957 | * il_tx_queue_init - Allocate and initialize one tx/cmd queue | |
2958 | */ | |
e7392364 | 2959 | int |
d87c771f | 2960 | il_tx_queue_init(struct il_priv *il, u32 txq_id) |
0cdc2136 | 2961 | { |
d87c771f SG |
2962 | int i, len, ret; |
2963 | int slots, actual_slots; | |
2964 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
0cdc2136 SG |
2965 | |
2966 | /* | |
2967 | * Alloc buffer array for commands (Tx or other types of commands). | |
2968 | * For the command queue (#4/#9), allocate command space + one big | |
2969 | * command for scan, since scan command is very huge; the system will | |
2970 | * not have two scans at the same time, so only one is needed. | |
2971 | * For normal Tx queues (all other queues), no super-size command | |
2972 | * space is needed. | |
2973 | */ | |
d87c771f SG |
2974 | if (txq_id == il->cmd_queue) { |
2975 | slots = TFD_CMD_SLOTS; | |
2976 | actual_slots = slots + 1; | |
2977 | } else { | |
2978 | slots = TFD_TX_CMD_SLOTS; | |
2979 | actual_slots = slots; | |
2980 | } | |
0cdc2136 | 2981 | |
e7392364 SG |
2982 | txq->meta = |
2983 | kzalloc(sizeof(struct il_cmd_meta) * actual_slots, GFP_KERNEL); | |
2984 | txq->cmd = | |
2985 | kzalloc(sizeof(struct il_device_cmd *) * actual_slots, GFP_KERNEL); | |
0cdc2136 SG |
2986 | |
2987 | if (!txq->meta || !txq->cmd) | |
2988 | goto out_free_arrays; | |
2989 | ||
2990 | len = sizeof(struct il_device_cmd); | |
2991 | for (i = 0; i < actual_slots; i++) { | |
2992 | /* only happens for cmd queue */ | |
d87c771f | 2993 | if (i == slots) |
0cdc2136 SG |
2994 | len = IL_MAX_CMD_SIZE; |
2995 | ||
2996 | txq->cmd[i] = kmalloc(len, GFP_KERNEL); | |
2997 | if (!txq->cmd[i]) | |
2998 | goto err; | |
2999 | } | |
3000 | ||
3001 | /* Alloc driver data array and TFD circular buffer */ | |
3002 | ret = il_tx_queue_alloc(il, txq, txq_id); | |
3003 | if (ret) | |
3004 | goto err; | |
3005 | ||
3006 | txq->need_update = 0; | |
3007 | ||
3008 | /* | |
3009 | * For the default queues 0-3, set up the swq_id | |
3010 | * already -- all others need to get one later | |
3011 | * (if they need one at all). | |
3012 | */ | |
3013 | if (txq_id < 4) | |
3014 | il_set_swq_id(txq, txq_id, txq_id); | |
3015 | ||
0cdc2136 | 3016 | /* Initialize queue's high/low-water marks, and head/tail idxes */ |
d87c771f | 3017 | il_queue_init(il, &txq->q, slots, txq_id); |
0cdc2136 SG |
3018 | |
3019 | /* Tell device where to find queue */ | |
1600b875 | 3020 | il->ops->txq_init(il, txq); |
0cdc2136 SG |
3021 | |
3022 | return 0; | |
3023 | err: | |
3024 | for (i = 0; i < actual_slots; i++) | |
3025 | kfree(txq->cmd[i]); | |
3026 | out_free_arrays: | |
3027 | kfree(txq->meta); | |
3028 | kfree(txq->cmd); | |
3029 | ||
3030 | return -ENOMEM; | |
3031 | } | |
3032 | EXPORT_SYMBOL(il_tx_queue_init); | |
3033 | ||
e7392364 | 3034 | void |
d87c771f | 3035 | il_tx_queue_reset(struct il_priv *il, u32 txq_id) |
0cdc2136 | 3036 | { |
d87c771f SG |
3037 | int slots, actual_slots; |
3038 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
0cdc2136 | 3039 | |
d87c771f SG |
3040 | if (txq_id == il->cmd_queue) { |
3041 | slots = TFD_CMD_SLOTS; | |
3042 | actual_slots = TFD_CMD_SLOTS + 1; | |
3043 | } else { | |
3044 | slots = TFD_TX_CMD_SLOTS; | |
3045 | actual_slots = TFD_TX_CMD_SLOTS; | |
3046 | } | |
0cdc2136 SG |
3047 | |
3048 | memset(txq->meta, 0, sizeof(struct il_cmd_meta) * actual_slots); | |
0cdc2136 SG |
3049 | txq->need_update = 0; |
3050 | ||
3051 | /* Initialize queue's high/low-water marks, and head/tail idxes */ | |
d87c771f | 3052 | il_queue_init(il, &txq->q, slots, txq_id); |
0cdc2136 SG |
3053 | |
3054 | /* Tell device where to find queue */ | |
1600b875 | 3055 | il->ops->txq_init(il, txq); |
0cdc2136 SG |
3056 | } |
3057 | EXPORT_SYMBOL(il_tx_queue_reset); | |
3058 | ||
3059 | /*************** HOST COMMAND QUEUE FUNCTIONS *****/ | |
3060 | ||
3061 | /** | |
3062 | * il_enqueue_hcmd - enqueue a uCode command | |
3063 | * @il: device ilate data point | |
3064 | * @cmd: a point to the ucode command structure | |
3065 | * | |
3066 | * The function returns < 0 values to indicate the operation is | |
3067 | * failed. On success, it turns the idx (> 0) of command in the | |
3068 | * command queue. | |
3069 | */ | |
e7392364 SG |
3070 | int |
3071 | il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd) | |
0cdc2136 SG |
3072 | { |
3073 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
3074 | struct il_queue *q = &txq->q; | |
3075 | struct il_device_cmd *out_cmd; | |
3076 | struct il_cmd_meta *out_meta; | |
3077 | dma_addr_t phys_addr; | |
3078 | unsigned long flags; | |
3079 | int len; | |
3080 | u32 idx; | |
3081 | u16 fix_size; | |
3082 | ||
c9363551 | 3083 | cmd->len = il->ops->get_hcmd_size(cmd->id, cmd->len); |
e7392364 | 3084 | fix_size = (u16) (cmd->len + sizeof(out_cmd->hdr)); |
0cdc2136 SG |
3085 | |
3086 | /* If any of the command structures end up being larger than | |
3087 | * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then | |
3088 | * we will need to increase the size of the TFD entries | |
3089 | * Also, check to see if command buffer should not exceed the size | |
3090 | * of device_cmd and max_cmd_size. */ | |
3091 | BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && | |
3092 | !(cmd->flags & CMD_SIZE_HUGE)); | |
3093 | BUG_ON(fix_size > IL_MAX_CMD_SIZE); | |
3094 | ||
3095 | if (il_is_rfkill(il) || il_is_ctkill(il)) { | |
3096 | IL_WARN("Not sending command - %s KILL\n", | |
e7392364 | 3097 | il_is_rfkill(il) ? "RF" : "CT"); |
0cdc2136 SG |
3098 | return -EIO; |
3099 | } | |
3100 | ||
3101 | spin_lock_irqsave(&il->hcmd_lock, flags); | |
3102 | ||
3103 | if (il_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) { | |
3104 | spin_unlock_irqrestore(&il->hcmd_lock, flags); | |
3105 | ||
3106 | IL_ERR("Restarting adapter due to command queue full\n"); | |
3107 | queue_work(il->workqueue, &il->restart); | |
3108 | return -ENOSPC; | |
3109 | } | |
3110 | ||
3111 | idx = il_get_cmd_idx(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE); | |
3112 | out_cmd = txq->cmd[idx]; | |
3113 | out_meta = &txq->meta[idx]; | |
3114 | ||
3115 | if (WARN_ON(out_meta->flags & CMD_MAPPED)) { | |
3116 | spin_unlock_irqrestore(&il->hcmd_lock, flags); | |
3117 | return -ENOSPC; | |
3118 | } | |
3119 | ||
3120 | memset(out_meta, 0, sizeof(*out_meta)); /* re-initialize to NULL */ | |
3121 | out_meta->flags = cmd->flags | CMD_MAPPED; | |
3122 | if (cmd->flags & CMD_WANT_SKB) | |
3123 | out_meta->source = cmd; | |
3124 | if (cmd->flags & CMD_ASYNC) | |
3125 | out_meta->callback = cmd->callback; | |
3126 | ||
3127 | out_cmd->hdr.cmd = cmd->id; | |
3128 | memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); | |
3129 | ||
3130 | /* At this point, the out_cmd now has all of the incoming cmd | |
3131 | * information */ | |
3132 | ||
3133 | out_cmd->hdr.flags = 0; | |
e7392364 SG |
3134 | out_cmd->hdr.sequence = |
3135 | cpu_to_le16(QUEUE_TO_SEQ(il->cmd_queue) | IDX_TO_SEQ(q->write_ptr)); | |
0cdc2136 SG |
3136 | if (cmd->flags & CMD_SIZE_HUGE) |
3137 | out_cmd->hdr.sequence |= SEQ_HUGE_FRAME; | |
3138 | len = sizeof(struct il_device_cmd); | |
3139 | if (idx == TFD_CMD_SLOTS) | |
3140 | len = IL_MAX_CMD_SIZE; | |
3141 | ||
3142 | #ifdef CONFIG_IWLEGACY_DEBUG | |
3143 | switch (out_cmd->hdr.cmd) { | |
3144 | case C_TX_LINK_QUALITY_CMD: | |
3145 | case C_SENSITIVITY: | |
e7392364 SG |
3146 | D_HC_DUMP("Sending command %s (#%x), seq: 0x%04X, " |
3147 | "%d bytes at %d[%d]:%d\n", | |
3148 | il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, | |
3149 | le16_to_cpu(out_cmd->hdr.sequence), fix_size, | |
3150 | q->write_ptr, idx, il->cmd_queue); | |
0cdc2136 SG |
3151 | break; |
3152 | default: | |
3153 | D_HC("Sending command %s (#%x), seq: 0x%04X, " | |
e7392364 SG |
3154 | "%d bytes at %d[%d]:%d\n", |
3155 | il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, | |
3156 | le16_to_cpu(out_cmd->hdr.sequence), fix_size, q->write_ptr, | |
3157 | idx, il->cmd_queue); | |
0cdc2136 SG |
3158 | } |
3159 | #endif | |
0cdc2136 | 3160 | |
e7392364 SG |
3161 | phys_addr = |
3162 | pci_map_single(il->pci_dev, &out_cmd->hdr, fix_size, | |
3163 | PCI_DMA_BIDIRECTIONAL); | |
bdb084b2 SG |
3164 | if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) { |
3165 | idx = -ENOMEM; | |
3166 | goto out; | |
3167 | } | |
0cdc2136 SG |
3168 | dma_unmap_addr_set(out_meta, mapping, phys_addr); |
3169 | dma_unmap_len_set(out_meta, len, fix_size); | |
3170 | ||
bdb084b2 SG |
3171 | txq->need_update = 1; |
3172 | ||
3173 | if (il->ops->txq_update_byte_cnt_tbl) | |
3174 | /* Set up entry in queue's byte count circular buffer */ | |
3175 | il->ops->txq_update_byte_cnt_tbl(il, txq, 0); | |
3176 | ||
1600b875 | 3177 | il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, fix_size, 1, |
c39ae9fd | 3178 | U32_PAD(cmd->len)); |
0cdc2136 SG |
3179 | |
3180 | /* Increment and update queue's write idx */ | |
3181 | q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); | |
3182 | il_txq_update_write_ptr(il, txq); | |
3183 | ||
bdb084b2 | 3184 | out: |
0cdc2136 SG |
3185 | spin_unlock_irqrestore(&il->hcmd_lock, flags); |
3186 | return idx; | |
3187 | } | |
3188 | ||
3189 | /** | |
3190 | * il_hcmd_queue_reclaim - Reclaim TX command queue entries already Tx'd | |
3191 | * | |
3192 | * When FW advances 'R' idx, all entries between old and new 'R' idx | |
3193 | * need to be reclaimed. As result, some free space forms. If there is | |
3194 | * enough free space (> low mark), wake the stack that feeds us. | |
3195 | */ | |
e7392364 SG |
3196 | static void |
3197 | il_hcmd_queue_reclaim(struct il_priv *il, int txq_id, int idx, int cmd_idx) | |
0cdc2136 SG |
3198 | { |
3199 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
3200 | struct il_queue *q = &txq->q; | |
3201 | int nfreed = 0; | |
3202 | ||
3203 | if (idx >= q->n_bd || il_queue_used(q, idx) == 0) { | |
3204 | IL_ERR("Read idx for DMA queue txq id (%d), idx %d, " | |
e7392364 SG |
3205 | "is out of range [0-%d] %d %d.\n", txq_id, idx, q->n_bd, |
3206 | q->write_ptr, q->read_ptr); | |
0cdc2136 SG |
3207 | return; |
3208 | } | |
3209 | ||
3210 | for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx; | |
3211 | q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) { | |
3212 | ||
3213 | if (nfreed++ > 0) { | |
3214 | IL_ERR("HCMD skipped: idx (%d) %d %d\n", idx, | |
e7392364 | 3215 | q->write_ptr, q->read_ptr); |
0cdc2136 SG |
3216 | queue_work(il->workqueue, &il->restart); |
3217 | } | |
3218 | ||
3219 | } | |
3220 | } | |
3221 | ||
3222 | /** | |
3223 | * il_tx_cmd_complete - Pull unused buffers off the queue and reclaim them | |
3224 | * @rxb: Rx buffer to reclaim | |
3225 | * | |
3226 | * If an Rx buffer has an async callback associated with it the callback | |
3227 | * will be executed. The attached skb (if present) will only be freed | |
3228 | * if the callback returns 1 | |
3229 | */ | |
3230 | void | |
3231 | il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb) | |
3232 | { | |
3233 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
3234 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
3235 | int txq_id = SEQ_TO_QUEUE(sequence); | |
3236 | int idx = SEQ_TO_IDX(sequence); | |
3237 | int cmd_idx; | |
3238 | bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME); | |
3239 | struct il_device_cmd *cmd; | |
3240 | struct il_cmd_meta *meta; | |
3241 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
3242 | unsigned long flags; | |
3243 | ||
3244 | /* If a Tx command is being handled and it isn't in the actual | |
3245 | * command queue then there a command routing bug has been introduced | |
3246 | * in the queue management code. */ | |
e7392364 SG |
3247 | if (WARN |
3248 | (txq_id != il->cmd_queue, | |
3249 | "wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n", | |
3250 | txq_id, il->cmd_queue, sequence, il->txq[il->cmd_queue].q.read_ptr, | |
3251 | il->txq[il->cmd_queue].q.write_ptr)) { | |
0cdc2136 SG |
3252 | il_print_hex_error(il, pkt, 32); |
3253 | return; | |
3254 | } | |
3255 | ||
3256 | cmd_idx = il_get_cmd_idx(&txq->q, idx, huge); | |
3257 | cmd = txq->cmd[cmd_idx]; | |
3258 | meta = &txq->meta[cmd_idx]; | |
3259 | ||
3260 | txq->time_stamp = jiffies; | |
3261 | ||
e7392364 SG |
3262 | pci_unmap_single(il->pci_dev, dma_unmap_addr(meta, mapping), |
3263 | dma_unmap_len(meta, len), PCI_DMA_BIDIRECTIONAL); | |
0cdc2136 SG |
3264 | |
3265 | /* Input error checking is done when commands are added to queue. */ | |
3266 | if (meta->flags & CMD_WANT_SKB) { | |
3267 | meta->source->reply_page = (unsigned long)rxb_addr(rxb); | |
3268 | rxb->page = NULL; | |
3269 | } else if (meta->callback) | |
3270 | meta->callback(il, cmd, pkt); | |
3271 | ||
3272 | spin_lock_irqsave(&il->hcmd_lock, flags); | |
3273 | ||
3274 | il_hcmd_queue_reclaim(il, txq_id, idx, cmd_idx); | |
3275 | ||
3276 | if (!(meta->flags & CMD_ASYNC)) { | |
3277 | clear_bit(S_HCMD_ACTIVE, &il->status); | |
3278 | D_INFO("Clearing HCMD_ACTIVE for command %s\n", | |
e7392364 | 3279 | il_get_cmd_string(cmd->hdr.cmd)); |
0cdc2136 SG |
3280 | wake_up(&il->wait_command_queue); |
3281 | } | |
3282 | ||
3283 | /* Mark as unmapped */ | |
3284 | meta->flags = 0; | |
3285 | ||
3286 | spin_unlock_irqrestore(&il->hcmd_lock, flags); | |
3287 | } | |
3288 | EXPORT_SYMBOL(il_tx_cmd_complete); | |
be663ab6 WYG |
3289 | |
3290 | MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965"); | |
3291 | MODULE_VERSION(IWLWIFI_VERSION); | |
3292 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); | |
3293 | MODULE_LICENSE("GPL"); | |
3294 | ||
3295 | /* | |
3296 | * set bt_coex_active to true, uCode will do kill/defer | |
3297 | * every time the priority line is asserted (BT is sending signals on the | |
3298 | * priority line in the PCIx). | |
3299 | * set bt_coex_active to false, uCode will ignore the BT activity and | |
3300 | * perform the normal operation | |
3301 | * | |
3302 | * User might experience transmit issue on some platform due to WiFi/BT | |
3303 | * co-exist problem. The possible behaviors are: | |
3304 | * Able to scan and finding all the available AP | |
3305 | * Not able to associate with any AP | |
3306 | * On those platforms, WiFi communication can be restored by set | |
3307 | * "bt_coex_active" module parameter to "false" | |
3308 | * | |
3309 | * default: bt_coex_active = true (BT_COEX_ENABLE) | |
3310 | */ | |
ef33417d | 3311 | static bool bt_coex_active = true; |
be663ab6 WYG |
3312 | module_param(bt_coex_active, bool, S_IRUGO); |
3313 | MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); | |
3314 | ||
d2ddf621 SG |
3315 | u32 il_debug_level; |
3316 | EXPORT_SYMBOL(il_debug_level); | |
be663ab6 | 3317 | |
d2ddf621 | 3318 | const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
e7392364 | 3319 | EXPORT_SYMBOL(il_bcast_addr); |
be663ab6 | 3320 | |
e7392364 SG |
3321 | #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
3322 | #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ | |
3323 | static void | |
3324 | il_init_ht_hw_capab(const struct il_priv *il, | |
3325 | struct ieee80211_sta_ht_cap *ht_info, | |
3326 | enum ieee80211_band band) | |
be663ab6 WYG |
3327 | { |
3328 | u16 max_bit_rate = 0; | |
46bc8d4b SG |
3329 | u8 rx_chains_num = il->hw_params.rx_chains_num; |
3330 | u8 tx_chains_num = il->hw_params.tx_chains_num; | |
be663ab6 WYG |
3331 | |
3332 | ht_info->cap = 0; | |
3333 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); | |
3334 | ||
3335 | ht_info->ht_supported = true; | |
3336 | ||
3337 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; | |
3338 | max_bit_rate = MAX_BIT_RATE_20_MHZ; | |
46bc8d4b | 3339 | if (il->hw_params.ht40_channel & BIT(band)) { |
be663ab6 WYG |
3340 | ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
3341 | ht_info->cap |= IEEE80211_HT_CAP_SGI_40; | |
3342 | ht_info->mcs.rx_mask[4] = 0x01; | |
3343 | max_bit_rate = MAX_BIT_RATE_40_MHZ; | |
3344 | } | |
3345 | ||
46bc8d4b | 3346 | if (il->cfg->mod_params->amsdu_size_8K) |
be663ab6 WYG |
3347 | ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
3348 | ||
3349 | ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; | |
3350 | ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; | |
3351 | ||
3352 | ht_info->mcs.rx_mask[0] = 0xFF; | |
3353 | if (rx_chains_num >= 2) | |
3354 | ht_info->mcs.rx_mask[1] = 0xFF; | |
3355 | if (rx_chains_num >= 3) | |
3356 | ht_info->mcs.rx_mask[2] = 0xFF; | |
3357 | ||
3358 | /* Highest supported Rx data rate */ | |
3359 | max_bit_rate *= rx_chains_num; | |
3360 | WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); | |
3361 | ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); | |
3362 | ||
3363 | /* Tx MCS capabilities */ | |
3364 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; | |
3365 | if (tx_chains_num != rx_chains_num) { | |
3366 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; | |
e7392364 SG |
3367 | ht_info->mcs.tx_params |= |
3368 | ((tx_chains_num - | |
3369 | 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); | |
be663ab6 WYG |
3370 | } |
3371 | } | |
3372 | ||
3373 | /** | |
e2ebc833 | 3374 | * il_init_geos - Initialize mac80211's geo/channel info based from eeprom |
be663ab6 | 3375 | */ |
e7392364 SG |
3376 | int |
3377 | il_init_geos(struct il_priv *il) | |
be663ab6 | 3378 | { |
e2ebc833 | 3379 | struct il_channel_info *ch; |
be663ab6 WYG |
3380 | struct ieee80211_supported_band *sband; |
3381 | struct ieee80211_channel *channels; | |
3382 | struct ieee80211_channel *geo_ch; | |
3383 | struct ieee80211_rate *rates; | |
3384 | int i = 0; | |
332704a5 | 3385 | s8 max_tx_power = 0; |
be663ab6 | 3386 | |
46bc8d4b SG |
3387 | if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates || |
3388 | il->bands[IEEE80211_BAND_5GHZ].n_bitrates) { | |
58de00a4 | 3389 | D_INFO("Geography modes already initialized.\n"); |
a6766ccd | 3390 | set_bit(S_GEO_CONFIGURED, &il->status); |
be663ab6 WYG |
3391 | return 0; |
3392 | } | |
3393 | ||
e7392364 SG |
3394 | channels = |
3395 | kzalloc(sizeof(struct ieee80211_channel) * il->channel_count, | |
3396 | GFP_KERNEL); | |
be663ab6 WYG |
3397 | if (!channels) |
3398 | return -ENOMEM; | |
3399 | ||
e7392364 SG |
3400 | rates = |
3401 | kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY), | |
3402 | GFP_KERNEL); | |
be663ab6 WYG |
3403 | if (!rates) { |
3404 | kfree(channels); | |
3405 | return -ENOMEM; | |
3406 | } | |
3407 | ||
3408 | /* 5.2GHz channels start after the 2.4GHz channels */ | |
46bc8d4b | 3409 | sband = &il->bands[IEEE80211_BAND_5GHZ]; |
d2ddf621 | 3410 | sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)]; |
be663ab6 | 3411 | /* just OFDM */ |
e2ebc833 | 3412 | sband->bitrates = &rates[IL_FIRST_OFDM_RATE]; |
2eb05816 | 3413 | sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE; |
be663ab6 | 3414 | |
46bc8d4b | 3415 | if (il->cfg->sku & IL_SKU_N) |
e7392364 | 3416 | il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_5GHZ); |
be663ab6 | 3417 | |
46bc8d4b | 3418 | sband = &il->bands[IEEE80211_BAND_2GHZ]; |
be663ab6 WYG |
3419 | sband->channels = channels; |
3420 | /* OFDM & CCK */ | |
3421 | sband->bitrates = rates; | |
2eb05816 | 3422 | sband->n_bitrates = RATE_COUNT_LEGACY; |
be663ab6 | 3423 | |
46bc8d4b | 3424 | if (il->cfg->sku & IL_SKU_N) |
e7392364 | 3425 | il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_2GHZ); |
be663ab6 | 3426 | |
46bc8d4b SG |
3427 | il->ieee_channels = channels; |
3428 | il->ieee_rates = rates; | |
be663ab6 | 3429 | |
e7392364 | 3430 | for (i = 0; i < il->channel_count; i++) { |
46bc8d4b | 3431 | ch = &il->channel_info[i]; |
be663ab6 | 3432 | |
e2ebc833 | 3433 | if (!il_is_channel_valid(ch)) |
be663ab6 WYG |
3434 | continue; |
3435 | ||
46bc8d4b | 3436 | sband = &il->bands[ch->band]; |
be663ab6 WYG |
3437 | |
3438 | geo_ch = &sband->channels[sband->n_channels++]; | |
3439 | ||
3440 | geo_ch->center_freq = | |
e7392364 | 3441 | ieee80211_channel_to_frequency(ch->channel, ch->band); |
be663ab6 WYG |
3442 | geo_ch->max_power = ch->max_power_avg; |
3443 | geo_ch->max_antenna_gain = 0xff; | |
3444 | geo_ch->hw_value = ch->channel; | |
3445 | ||
e2ebc833 | 3446 | if (il_is_channel_valid(ch)) { |
be663ab6 | 3447 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) |
8fe02e16 | 3448 | geo_ch->flags |= IEEE80211_CHAN_NO_IR; |
be663ab6 WYG |
3449 | |
3450 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) | |
8fe02e16 | 3451 | geo_ch->flags |= IEEE80211_CHAN_NO_IR; |
be663ab6 WYG |
3452 | |
3453 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
3454 | geo_ch->flags |= IEEE80211_CHAN_RADAR; | |
3455 | ||
3456 | geo_ch->flags |= ch->ht40_extension_channel; | |
3457 | ||
332704a5 SG |
3458 | if (ch->max_power_avg > max_tx_power) |
3459 | max_tx_power = ch->max_power_avg; | |
be663ab6 WYG |
3460 | } else { |
3461 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; | |
3462 | } | |
3463 | ||
e7392364 SG |
3464 | D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel, |
3465 | geo_ch->center_freq, | |
3466 | il_is_channel_a_band(ch) ? "5.2" : "2.4", | |
3467 | geo_ch-> | |
3468 | flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid", | |
3469 | geo_ch->flags); | |
be663ab6 WYG |
3470 | } |
3471 | ||
46bc8d4b SG |
3472 | il->tx_power_device_lmt = max_tx_power; |
3473 | il->tx_power_user_lmt = max_tx_power; | |
3474 | il->tx_power_next = max_tx_power; | |
332704a5 | 3475 | |
232913b5 SG |
3476 | if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 && |
3477 | (il->cfg->sku & IL_SKU_A)) { | |
9406f797 | 3478 | IL_INFO("Incorrectly detected BG card as ABG. " |
be663ab6 | 3479 | "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", |
e7392364 | 3480 | il->pci_dev->device, il->pci_dev->subsystem_device); |
46bc8d4b | 3481 | il->cfg->sku &= ~IL_SKU_A; |
be663ab6 WYG |
3482 | } |
3483 | ||
9406f797 | 3484 | IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
e7392364 SG |
3485 | il->bands[IEEE80211_BAND_2GHZ].n_channels, |
3486 | il->bands[IEEE80211_BAND_5GHZ].n_channels); | |
be663ab6 | 3487 | |
a6766ccd | 3488 | set_bit(S_GEO_CONFIGURED, &il->status); |
be663ab6 WYG |
3489 | |
3490 | return 0; | |
3491 | } | |
e2ebc833 | 3492 | EXPORT_SYMBOL(il_init_geos); |
be663ab6 WYG |
3493 | |
3494 | /* | |
e2ebc833 | 3495 | * il_free_geos - undo allocations in il_init_geos |
be663ab6 | 3496 | */ |
e7392364 SG |
3497 | void |
3498 | il_free_geos(struct il_priv *il) | |
be663ab6 | 3499 | { |
46bc8d4b SG |
3500 | kfree(il->ieee_channels); |
3501 | kfree(il->ieee_rates); | |
a6766ccd | 3502 | clear_bit(S_GEO_CONFIGURED, &il->status); |
be663ab6 | 3503 | } |
e2ebc833 | 3504 | EXPORT_SYMBOL(il_free_geos); |
be663ab6 | 3505 | |
e7392364 SG |
3506 | static bool |
3507 | il_is_channel_extension(struct il_priv *il, enum ieee80211_band band, | |
3508 | u16 channel, u8 extension_chan_offset) | |
be663ab6 | 3509 | { |
e2ebc833 | 3510 | const struct il_channel_info *ch_info; |
be663ab6 | 3511 | |
46bc8d4b | 3512 | ch_info = il_get_channel_info(il, band, channel); |
e2ebc833 | 3513 | if (!il_is_channel_valid(ch_info)) |
be663ab6 WYG |
3514 | return false; |
3515 | ||
3516 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) | |
e7392364 SG |
3517 | return !(ch_info-> |
3518 | ht40_extension_channel & IEEE80211_CHAN_NO_HT40PLUS); | |
be663ab6 | 3519 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) |
e7392364 SG |
3520 | return !(ch_info-> |
3521 | ht40_extension_channel & IEEE80211_CHAN_NO_HT40MINUS); | |
be663ab6 WYG |
3522 | |
3523 | return false; | |
3524 | } | |
3525 | ||
e7392364 | 3526 | bool |
83007196 | 3527 | il_is_ht40_tx_allowed(struct il_priv *il, struct ieee80211_sta_ht_cap *ht_cap) |
be663ab6 | 3528 | { |
1c03c462 | 3529 | if (!il->ht.enabled || !il->ht.is_40mhz) |
be663ab6 WYG |
3530 | return false; |
3531 | ||
3532 | /* | |
3533 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
3534 | * the bit will not set if it is pure 40MHz case | |
3535 | */ | |
3536 | if (ht_cap && !ht_cap->ht_supported) | |
3537 | return false; | |
3538 | ||
d3175167 | 3539 | #ifdef CONFIG_IWLEGACY_DEBUGFS |
46bc8d4b | 3540 | if (il->disable_ht40) |
be663ab6 WYG |
3541 | return false; |
3542 | #endif | |
3543 | ||
46bc8d4b | 3544 | return il_is_channel_extension(il, il->band, |
c8b03958 | 3545 | le16_to_cpu(il->staging.channel), |
1c03c462 | 3546 | il->ht.extension_chan_offset); |
be663ab6 | 3547 | } |
e2ebc833 | 3548 | EXPORT_SYMBOL(il_is_ht40_tx_allowed); |
be663ab6 | 3549 | |
e7392364 SG |
3550 | static u16 |
3551 | il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) | |
be663ab6 WYG |
3552 | { |
3553 | u16 new_val; | |
3554 | u16 beacon_factor; | |
3555 | ||
3556 | /* | |
3557 | * If mac80211 hasn't given us a beacon interval, program | |
3558 | * the default into the device. | |
3559 | */ | |
3560 | if (!beacon_val) | |
3561 | return DEFAULT_BEACON_INTERVAL; | |
3562 | ||
3563 | /* | |
3564 | * If the beacon interval we obtained from the peer | |
3565 | * is too large, we'll have to wake up more often | |
3566 | * (and in IBSS case, we'll beacon too much) | |
3567 | * | |
3568 | * For example, if max_beacon_val is 4096, and the | |
3569 | * requested beacon interval is 7000, we'll have to | |
3570 | * use 3500 to be able to wake up on the beacons. | |
3571 | * | |
3572 | * This could badly influence beacon detection stats. | |
3573 | */ | |
3574 | ||
3575 | beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; | |
3576 | new_val = beacon_val / beacon_factor; | |
3577 | ||
3578 | if (!new_val) | |
3579 | new_val = max_beacon_val; | |
3580 | ||
3581 | return new_val; | |
3582 | } | |
3583 | ||
3584 | int | |
83007196 | 3585 | il_send_rxon_timing(struct il_priv *il) |
be663ab6 WYG |
3586 | { |
3587 | u64 tsf; | |
3588 | s32 interval_tm, rem; | |
3589 | struct ieee80211_conf *conf = NULL; | |
3590 | u16 beacon_int; | |
83007196 | 3591 | struct ieee80211_vif *vif = il->vif; |
be663ab6 | 3592 | |
6278ddab | 3593 | conf = &il->hw->conf; |
be663ab6 | 3594 | |
46bc8d4b | 3595 | lockdep_assert_held(&il->mutex); |
be663ab6 | 3596 | |
c8b03958 | 3597 | memset(&il->timing, 0, sizeof(struct il_rxon_time_cmd)); |
be663ab6 | 3598 | |
c8b03958 SG |
3599 | il->timing.timestamp = cpu_to_le64(il->timestamp); |
3600 | il->timing.listen_interval = cpu_to_le16(conf->listen_interval); | |
be663ab6 WYG |
3601 | |
3602 | beacon_int = vif ? vif->bss_conf.beacon_int : 0; | |
3603 | ||
3604 | /* | |
6ce1dc45 | 3605 | * TODO: For IBSS we need to get atim_win from mac80211, |
e7392364 | 3606 | * for now just always use 0 |
be663ab6 | 3607 | */ |
c8b03958 | 3608 | il->timing.atim_win = 0; |
be663ab6 | 3609 | |
e7392364 SG |
3610 | beacon_int = |
3611 | il_adjust_beacon_interval(beacon_int, | |
3612 | il->hw_params.max_beacon_itrvl * | |
3613 | TIME_UNIT); | |
c8b03958 | 3614 | il->timing.beacon_interval = cpu_to_le16(beacon_int); |
be663ab6 | 3615 | |
e7392364 | 3616 | tsf = il->timestamp; /* tsf is modifed by do_div: copy it */ |
be663ab6 WYG |
3617 | interval_tm = beacon_int * TIME_UNIT; |
3618 | rem = do_div(tsf, interval_tm); | |
c8b03958 | 3619 | il->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); |
be663ab6 | 3620 | |
c8b03958 | 3621 | il->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ? : 1) : 1; |
be663ab6 | 3622 | |
e7392364 | 3623 | D_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n", |
c8b03958 SG |
3624 | le16_to_cpu(il->timing.beacon_interval), |
3625 | le32_to_cpu(il->timing.beacon_init_val), | |
3626 | le16_to_cpu(il->timing.atim_win)); | |
be663ab6 | 3627 | |
63d0f0c5 | 3628 | return il_send_cmd_pdu(il, C_RXON_TIMING, sizeof(il->timing), |
c8b03958 | 3629 | &il->timing); |
be663ab6 | 3630 | } |
e2ebc833 | 3631 | EXPORT_SYMBOL(il_send_rxon_timing); |
be663ab6 WYG |
3632 | |
3633 | void | |
83007196 | 3634 | il_set_rxon_hwcrypto(struct il_priv *il, int hw_decrypt) |
be663ab6 | 3635 | { |
c8b03958 | 3636 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 WYG |
3637 | |
3638 | if (hw_decrypt) | |
3639 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
3640 | else | |
3641 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
3642 | ||
3643 | } | |
e2ebc833 | 3644 | EXPORT_SYMBOL(il_set_rxon_hwcrypto); |
be663ab6 WYG |
3645 | |
3646 | /* validate RXON structure is valid */ | |
3647 | int | |
83007196 | 3648 | il_check_rxon_cmd(struct il_priv *il) |
be663ab6 | 3649 | { |
c8b03958 | 3650 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 WYG |
3651 | bool error = false; |
3652 | ||
3653 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
3654 | if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { | |
9406f797 | 3655 | IL_WARN("check 2.4G: wrong narrow\n"); |
be663ab6 WYG |
3656 | error = true; |
3657 | } | |
3658 | if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { | |
9406f797 | 3659 | IL_WARN("check 2.4G: wrong radar\n"); |
be663ab6 WYG |
3660 | error = true; |
3661 | } | |
3662 | } else { | |
3663 | if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { | |
9406f797 | 3664 | IL_WARN("check 5.2G: not short slot!\n"); |
be663ab6 WYG |
3665 | error = true; |
3666 | } | |
3667 | if (rxon->flags & RXON_FLG_CCK_MSK) { | |
9406f797 | 3668 | IL_WARN("check 5.2G: CCK!\n"); |
be663ab6 WYG |
3669 | error = true; |
3670 | } | |
3671 | } | |
3672 | if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { | |
9406f797 | 3673 | IL_WARN("mac/bssid mcast!\n"); |
be663ab6 WYG |
3674 | error = true; |
3675 | } | |
3676 | ||
3677 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
2eb05816 SG |
3678 | if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 && |
3679 | (rxon->cck_basic_rates & RATE_1M_MASK) == 0) { | |
9406f797 | 3680 | IL_WARN("neither 1 nor 6 are basic\n"); |
be663ab6 WYG |
3681 | error = true; |
3682 | } | |
3683 | ||
3684 | if (le16_to_cpu(rxon->assoc_id) > 2007) { | |
9406f797 | 3685 | IL_WARN("aid > 2007\n"); |
be663ab6 WYG |
3686 | error = true; |
3687 | } | |
3688 | ||
e7392364 SG |
3689 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) == |
3690 | (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { | |
9406f797 | 3691 | IL_WARN("CCK and short slot\n"); |
be663ab6 WYG |
3692 | error = true; |
3693 | } | |
3694 | ||
e7392364 SG |
3695 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) == |
3696 | (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { | |
9406f797 | 3697 | IL_WARN("CCK and auto detect"); |
be663ab6 WYG |
3698 | error = true; |
3699 | } | |
3700 | ||
e7392364 SG |
3701 | if ((rxon-> |
3702 | flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) == | |
3703 | RXON_FLG_TGG_PROTECT_MSK) { | |
9406f797 | 3704 | IL_WARN("TGg but no auto-detect\n"); |
be663ab6 WYG |
3705 | error = true; |
3706 | } | |
3707 | ||
3708 | if (error) | |
e7392364 | 3709 | IL_WARN("Tuning to channel %d\n", le16_to_cpu(rxon->channel)); |
be663ab6 WYG |
3710 | |
3711 | if (error) { | |
9406f797 | 3712 | IL_ERR("Invalid RXON\n"); |
be663ab6 WYG |
3713 | return -EINVAL; |
3714 | } | |
3715 | return 0; | |
3716 | } | |
e2ebc833 | 3717 | EXPORT_SYMBOL(il_check_rxon_cmd); |
be663ab6 WYG |
3718 | |
3719 | /** | |
e2ebc833 | 3720 | * il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed |
46bc8d4b | 3721 | * @il: staging_rxon is compared to active_rxon |
be663ab6 WYG |
3722 | * |
3723 | * If the RXON structure is changing enough to require a new tune, | |
3724 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that | |
3725 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. | |
3726 | */ | |
e7392364 | 3727 | int |
83007196 | 3728 | il_full_rxon_required(struct il_priv *il) |
be663ab6 | 3729 | { |
c8b03958 SG |
3730 | const struct il_rxon_cmd *staging = &il->staging; |
3731 | const struct il_rxon_cmd *active = &il->active; | |
be663ab6 WYG |
3732 | |
3733 | #define CHK(cond) \ | |
3734 | if ((cond)) { \ | |
58de00a4 | 3735 | D_INFO("need full RXON - " #cond "\n"); \ |
be663ab6 WYG |
3736 | return 1; \ |
3737 | } | |
3738 | ||
3739 | #define CHK_NEQ(c1, c2) \ | |
3740 | if ((c1) != (c2)) { \ | |
58de00a4 | 3741 | D_INFO("need full RXON - " \ |
be663ab6 WYG |
3742 | #c1 " != " #c2 " - %d != %d\n", \ |
3743 | (c1), (c2)); \ | |
3744 | return 1; \ | |
3745 | } | |
3746 | ||
3747 | /* These items are only settable from the full RXON command */ | |
c8b03958 | 3748 | CHK(!il_is_associated(il)); |
2e42e474 JP |
3749 | CHK(!ether_addr_equal(staging->bssid_addr, active->bssid_addr)); |
3750 | CHK(!ether_addr_equal(staging->node_addr, active->node_addr)); | |
3751 | CHK(!ether_addr_equal(staging->wlap_bssid_addr, | |
3752 | active->wlap_bssid_addr)); | |
be663ab6 WYG |
3753 | CHK_NEQ(staging->dev_type, active->dev_type); |
3754 | CHK_NEQ(staging->channel, active->channel); | |
3755 | CHK_NEQ(staging->air_propagation, active->air_propagation); | |
3756 | CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, | |
3757 | active->ofdm_ht_single_stream_basic_rates); | |
3758 | CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, | |
3759 | active->ofdm_ht_dual_stream_basic_rates); | |
3760 | CHK_NEQ(staging->assoc_id, active->assoc_id); | |
3761 | ||
3762 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
3763 | * be updated with the RXON_ASSOC command -- however only some | |
3764 | * flag transitions are allowed using RXON_ASSOC */ | |
3765 | ||
3766 | /* Check if we are not switching bands */ | |
3767 | CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, | |
3768 | active->flags & RXON_FLG_BAND_24G_MSK); | |
3769 | ||
3770 | /* Check if we are switching association toggle */ | |
3771 | CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, | |
3772 | active->filter_flags & RXON_FILTER_ASSOC_MSK); | |
3773 | ||
3774 | #undef CHK | |
3775 | #undef CHK_NEQ | |
3776 | ||
3777 | return 0; | |
3778 | } | |
e2ebc833 | 3779 | EXPORT_SYMBOL(il_full_rxon_required); |
be663ab6 | 3780 | |
e7392364 | 3781 | u8 |
83007196 | 3782 | il_get_lowest_plcp(struct il_priv *il) |
be663ab6 WYG |
3783 | { |
3784 | /* | |
3785 | * Assign the lowest rate -- should really get this from | |
3786 | * the beacon skb from mac80211. | |
3787 | */ | |
c8b03958 | 3788 | if (il->staging.flags & RXON_FLG_BAND_24G_MSK) |
2eb05816 | 3789 | return RATE_1M_PLCP; |
be663ab6 | 3790 | else |
2eb05816 | 3791 | return RATE_6M_PLCP; |
be663ab6 | 3792 | } |
e2ebc833 | 3793 | EXPORT_SYMBOL(il_get_lowest_plcp); |
be663ab6 | 3794 | |
e7392364 | 3795 | static void |
83007196 | 3796 | _il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) |
be663ab6 | 3797 | { |
c8b03958 | 3798 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 | 3799 | |
1c03c462 | 3800 | if (!il->ht.enabled) { |
e7392364 SG |
3801 | rxon->flags &= |
3802 | ~(RXON_FLG_CHANNEL_MODE_MSK | | |
3803 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK | |
3804 | | RXON_FLG_HT_PROT_MSK); | |
be663ab6 WYG |
3805 | return; |
3806 | } | |
3807 | ||
e7392364 | 3808 | rxon->flags |= |
1c03c462 | 3809 | cpu_to_le32(il->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS); |
be663ab6 WYG |
3810 | |
3811 | /* Set up channel bandwidth: | |
3812 | * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ | |
3813 | /* clear the HT channel mode before set the mode */ | |
e7392364 SG |
3814 | rxon->flags &= |
3815 | ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
83007196 | 3816 | if (il_is_ht40_tx_allowed(il, NULL)) { |
be663ab6 | 3817 | /* pure ht40 */ |
1c03c462 | 3818 | if (il->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { |
be663ab6 WYG |
3819 | rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; |
3820 | /* Note: control channel is opposite of extension channel */ | |
1c03c462 | 3821 | switch (il->ht.extension_chan_offset) { |
be663ab6 WYG |
3822 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
3823 | rxon->flags &= | |
e7392364 | 3824 | ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
be663ab6 WYG |
3825 | break; |
3826 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
e7392364 | 3827 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
be663ab6 WYG |
3828 | break; |
3829 | } | |
3830 | } else { | |
3831 | /* Note: control channel is opposite of extension channel */ | |
1c03c462 | 3832 | switch (il->ht.extension_chan_offset) { |
be663ab6 WYG |
3833 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
3834 | rxon->flags &= | |
e7392364 | 3835 | ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); |
be663ab6 WYG |
3836 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
3837 | break; | |
3838 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
e7392364 | 3839 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
be663ab6 WYG |
3840 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
3841 | break; | |
3842 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
3843 | default: | |
3844 | /* channel location only valid if in Mixed mode */ | |
e7392364 | 3845 | IL_ERR("invalid extension channel offset\n"); |
be663ab6 WYG |
3846 | break; |
3847 | } | |
3848 | } | |
3849 | } else { | |
3850 | rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; | |
3851 | } | |
3852 | ||
c9363551 SG |
3853 | if (il->ops->set_rxon_chain) |
3854 | il->ops->set_rxon_chain(il); | |
be663ab6 | 3855 | |
58de00a4 | 3856 | D_ASSOC("rxon flags 0x%X operation mode :0x%X " |
e7392364 | 3857 | "extension channel offset 0x%x\n", le32_to_cpu(rxon->flags), |
1c03c462 | 3858 | il->ht.protection, il->ht.extension_chan_offset); |
be663ab6 WYG |
3859 | } |
3860 | ||
e7392364 SG |
3861 | void |
3862 | il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) | |
be663ab6 | 3863 | { |
83007196 | 3864 | _il_set_rxon_ht(il, ht_conf); |
be663ab6 | 3865 | } |
e2ebc833 | 3866 | EXPORT_SYMBOL(il_set_rxon_ht); |
be663ab6 WYG |
3867 | |
3868 | /* Return valid, unused, channel for a passive scan to reset the RF */ | |
e7392364 SG |
3869 | u8 |
3870 | il_get_single_channel_number(struct il_priv *il, enum ieee80211_band band) | |
be663ab6 | 3871 | { |
e2ebc833 | 3872 | const struct il_channel_info *ch_info; |
be663ab6 WYG |
3873 | int i; |
3874 | u8 channel = 0; | |
3875 | u8 min, max; | |
be663ab6 WYG |
3876 | |
3877 | if (band == IEEE80211_BAND_5GHZ) { | |
3878 | min = 14; | |
46bc8d4b | 3879 | max = il->channel_count; |
be663ab6 WYG |
3880 | } else { |
3881 | min = 0; | |
3882 | max = 14; | |
3883 | } | |
3884 | ||
3885 | for (i = min; i < max; i++) { | |
17d6e557 | 3886 | channel = il->channel_info[i].channel; |
c8b03958 | 3887 | if (channel == le16_to_cpu(il->staging.channel)) |
be663ab6 WYG |
3888 | continue; |
3889 | ||
46bc8d4b | 3890 | ch_info = il_get_channel_info(il, band, channel); |
e2ebc833 | 3891 | if (il_is_channel_valid(ch_info)) |
be663ab6 WYG |
3892 | break; |
3893 | } | |
3894 | ||
3895 | return channel; | |
3896 | } | |
e2ebc833 | 3897 | EXPORT_SYMBOL(il_get_single_channel_number); |
be663ab6 WYG |
3898 | |
3899 | /** | |
e2ebc833 | 3900 | * il_set_rxon_channel - Set the band and channel values in staging RXON |
be663ab6 WYG |
3901 | * @ch: requested channel as a pointer to struct ieee80211_channel |
3902 | ||
3903 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields | |
3904 | * in the staging RXON flag structure based on the ch->band | |
3905 | */ | |
3906 | int | |
83007196 | 3907 | il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch) |
be663ab6 WYG |
3908 | { |
3909 | enum ieee80211_band band = ch->band; | |
3910 | u16 channel = ch->hw_value; | |
3911 | ||
c8b03958 | 3912 | if (le16_to_cpu(il->staging.channel) == channel && il->band == band) |
be663ab6 WYG |
3913 | return 0; |
3914 | ||
c8b03958 | 3915 | il->staging.channel = cpu_to_le16(channel); |
be663ab6 | 3916 | if (band == IEEE80211_BAND_5GHZ) |
c8b03958 | 3917 | il->staging.flags &= ~RXON_FLG_BAND_24G_MSK; |
be663ab6 | 3918 | else |
c8b03958 | 3919 | il->staging.flags |= RXON_FLG_BAND_24G_MSK; |
be663ab6 | 3920 | |
46bc8d4b | 3921 | il->band = band; |
be663ab6 | 3922 | |
58de00a4 | 3923 | D_INFO("Staging channel set to %d [%d]\n", channel, band); |
be663ab6 WYG |
3924 | |
3925 | return 0; | |
3926 | } | |
e2ebc833 | 3927 | EXPORT_SYMBOL(il_set_rxon_channel); |
be663ab6 | 3928 | |
e7392364 | 3929 | void |
83007196 SG |
3930 | il_set_flags_for_band(struct il_priv *il, enum ieee80211_band band, |
3931 | struct ieee80211_vif *vif) | |
be663ab6 WYG |
3932 | { |
3933 | if (band == IEEE80211_BAND_5GHZ) { | |
c8b03958 | 3934 | il->staging.flags &= |
e7392364 SG |
3935 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
3936 | RXON_FLG_CCK_MSK); | |
c8b03958 | 3937 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
be663ab6 | 3938 | } else { |
e2ebc833 | 3939 | /* Copied from il_post_associate() */ |
be663ab6 | 3940 | if (vif && vif->bss_conf.use_short_slot) |
c8b03958 | 3941 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
be663ab6 | 3942 | else |
c8b03958 | 3943 | il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
be663ab6 | 3944 | |
c8b03958 SG |
3945 | il->staging.flags |= RXON_FLG_BAND_24G_MSK; |
3946 | il->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; | |
3947 | il->staging.flags &= ~RXON_FLG_CCK_MSK; | |
be663ab6 WYG |
3948 | } |
3949 | } | |
e2ebc833 | 3950 | EXPORT_SYMBOL(il_set_flags_for_band); |
be663ab6 WYG |
3951 | |
3952 | /* | |
3953 | * initialize rxon structure with default values from eeprom | |
3954 | */ | |
e7392364 | 3955 | void |
83007196 | 3956 | il_connection_init_rx_config(struct il_priv *il) |
be663ab6 | 3957 | { |
e2ebc833 | 3958 | const struct il_channel_info *ch_info; |
be663ab6 | 3959 | |
c8b03958 | 3960 | memset(&il->staging, 0, sizeof(il->staging)); |
be663ab6 | 3961 | |
fa4cffcb SG |
3962 | switch (il->iw_mode) { |
3963 | case NL80211_IFTYPE_UNSPECIFIED: | |
0f8b90f5 | 3964 | il->staging.dev_type = RXON_DEV_TYPE_ESS; |
fa4cffcb SG |
3965 | break; |
3966 | case NL80211_IFTYPE_STATION: | |
83007196 SG |
3967 | il->staging.dev_type = RXON_DEV_TYPE_ESS; |
3968 | il->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; | |
fa4cffcb SG |
3969 | break; |
3970 | case NL80211_IFTYPE_ADHOC: | |
83007196 SG |
3971 | il->staging.dev_type = RXON_DEV_TYPE_IBSS; |
3972 | il->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; | |
3973 | il->staging.filter_flags = | |
3974 | RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK; | |
fa4cffcb SG |
3975 | break; |
3976 | default: | |
83007196 SG |
3977 | IL_ERR("Unsupported interface type %d\n", il->vif->type); |
3978 | return; | |
3979 | } | |
be663ab6 WYG |
3980 | |
3981 | #if 0 | |
3982 | /* TODO: Figure out when short_preamble would be set and cache from | |
3983 | * that */ | |
46bc8d4b | 3984 | if (!hw_to_local(il->hw)->short_preamble) |
c8b03958 | 3985 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 | 3986 | else |
c8b03958 | 3987 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 WYG |
3988 | #endif |
3989 | ||
e7392364 | 3990 | ch_info = |
c8b03958 | 3991 | il_get_channel_info(il, il->band, le16_to_cpu(il->active.channel)); |
be663ab6 WYG |
3992 | |
3993 | if (!ch_info) | |
46bc8d4b | 3994 | ch_info = &il->channel_info[0]; |
be663ab6 | 3995 | |
c8b03958 | 3996 | il->staging.channel = cpu_to_le16(ch_info->channel); |
46bc8d4b | 3997 | il->band = ch_info->band; |
be663ab6 | 3998 | |
83007196 | 3999 | il_set_flags_for_band(il, il->band, il->vif); |
be663ab6 | 4000 | |
c8b03958 | 4001 | il->staging.ofdm_basic_rates = |
e2ebc833 | 4002 | (IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; |
c8b03958 | 4003 | il->staging.cck_basic_rates = |
e2ebc833 | 4004 | (IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; |
be663ab6 WYG |
4005 | |
4006 | /* clear both MIX and PURE40 mode flag */ | |
c8b03958 | 4007 | il->staging.flags &= |
e7392364 | 4008 | ~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40); |
83007196 SG |
4009 | if (il->vif) |
4010 | memcpy(il->staging.node_addr, il->vif->addr, ETH_ALEN); | |
be663ab6 | 4011 | |
c8b03958 SG |
4012 | il->staging.ofdm_ht_single_stream_basic_rates = 0xff; |
4013 | il->staging.ofdm_ht_dual_stream_basic_rates = 0xff; | |
be663ab6 | 4014 | } |
e2ebc833 | 4015 | EXPORT_SYMBOL(il_connection_init_rx_config); |
be663ab6 | 4016 | |
e7392364 SG |
4017 | void |
4018 | il_set_rate(struct il_priv *il) | |
be663ab6 WYG |
4019 | { |
4020 | const struct ieee80211_supported_band *hw = NULL; | |
4021 | struct ieee80211_rate *rate; | |
be663ab6 WYG |
4022 | int i; |
4023 | ||
46bc8d4b | 4024 | hw = il_get_hw_mode(il, il->band); |
be663ab6 | 4025 | if (!hw) { |
9406f797 | 4026 | IL_ERR("Failed to set rate: unable to get hw mode\n"); |
be663ab6 WYG |
4027 | return; |
4028 | } | |
4029 | ||
46bc8d4b | 4030 | il->active_rate = 0; |
be663ab6 WYG |
4031 | |
4032 | for (i = 0; i < hw->n_bitrates; i++) { | |
4033 | rate = &(hw->bitrates[i]); | |
2eb05816 | 4034 | if (rate->hw_value < RATE_COUNT_LEGACY) |
46bc8d4b | 4035 | il->active_rate |= (1 << rate->hw_value); |
be663ab6 WYG |
4036 | } |
4037 | ||
58de00a4 | 4038 | D_RATE("Set active_rate = %0x\n", il->active_rate); |
be663ab6 | 4039 | |
c8b03958 | 4040 | il->staging.cck_basic_rates = |
e7392364 | 4041 | (IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; |
be663ab6 | 4042 | |
c8b03958 | 4043 | il->staging.ofdm_basic_rates = |
e7392364 | 4044 | (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; |
be663ab6 | 4045 | } |
e2ebc833 | 4046 | EXPORT_SYMBOL(il_set_rate); |
be663ab6 | 4047 | |
e7392364 SG |
4048 | void |
4049 | il_chswitch_done(struct il_priv *il, bool is_success) | |
be663ab6 | 4050 | { |
a6766ccd | 4051 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
4052 | return; |
4053 | ||
a6766ccd | 4054 | if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) |
83007196 | 4055 | ieee80211_chswitch_done(il->vif, is_success); |
be663ab6 | 4056 | } |
e2ebc833 | 4057 | EXPORT_SYMBOL(il_chswitch_done); |
be663ab6 | 4058 | |
e7392364 SG |
4059 | void |
4060 | il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4061 | { |
dcae1c64 | 4062 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 4063 | struct il_csa_notification *csa = &(pkt->u.csa_notif); |
c8b03958 | 4064 | struct il_rxon_cmd *rxon = (void *)&il->active; |
be663ab6 | 4065 | |
a6766ccd | 4066 | if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) |
51e65257 SG |
4067 | return; |
4068 | ||
46bc8d4b | 4069 | if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) { |
51e65257 | 4070 | rxon->channel = csa->channel; |
c8b03958 | 4071 | il->staging.channel = csa->channel; |
e7392364 | 4072 | D_11H("CSA notif: channel %d\n", le16_to_cpu(csa->channel)); |
46bc8d4b | 4073 | il_chswitch_done(il, true); |
51e65257 | 4074 | } else { |
9406f797 | 4075 | IL_ERR("CSA notif (fail) : channel %d\n", |
e7392364 | 4076 | le16_to_cpu(csa->channel)); |
46bc8d4b | 4077 | il_chswitch_done(il, false); |
be663ab6 WYG |
4078 | } |
4079 | } | |
d2dfb33e | 4080 | EXPORT_SYMBOL(il_hdl_csa); |
be663ab6 | 4081 | |
d3175167 | 4082 | #ifdef CONFIG_IWLEGACY_DEBUG |
e7392364 | 4083 | void |
83007196 | 4084 | il_print_rx_config_cmd(struct il_priv *il) |
be663ab6 | 4085 | { |
c8b03958 | 4086 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 | 4087 | |
58de00a4 | 4088 | D_RADIO("RX CONFIG:\n"); |
46bc8d4b | 4089 | il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
e7392364 | 4090 | D_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); |
58de00a4 | 4091 | D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); |
e7392364 | 4092 | D_RADIO("u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags)); |
58de00a4 | 4093 | D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type); |
e7392364 SG |
4094 | D_RADIO("u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates); |
4095 | D_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); | |
58de00a4 SG |
4096 | D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr); |
4097 | D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr); | |
e7392364 | 4098 | D_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); |
be663ab6 | 4099 | } |
e2ebc833 | 4100 | EXPORT_SYMBOL(il_print_rx_config_cmd); |
be663ab6 WYG |
4101 | #endif |
4102 | /** | |
e2ebc833 | 4103 | * il_irq_handle_error - called for HW or SW error interrupt from card |
be663ab6 | 4104 | */ |
e7392364 SG |
4105 | void |
4106 | il_irq_handle_error(struct il_priv *il) | |
be663ab6 | 4107 | { |
e2ebc833 | 4108 | /* Set the FW error flag -- cleared on il_down */ |
a6766ccd | 4109 | set_bit(S_FW_ERROR, &il->status); |
be663ab6 WYG |
4110 | |
4111 | /* Cancel currently queued command. */ | |
a6766ccd | 4112 | clear_bit(S_HCMD_ACTIVE, &il->status); |
be663ab6 | 4113 | |
e7392364 | 4114 | IL_ERR("Loaded firmware version: %s\n", il->hw->wiphy->fw_version); |
be663ab6 | 4115 | |
1600b875 SG |
4116 | il->ops->dump_nic_error_log(il); |
4117 | if (il->ops->dump_fh) | |
4118 | il->ops->dump_fh(il, NULL, false); | |
d3175167 | 4119 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 4120 | if (il_get_debug_level(il) & IL_DL_FW_ERRORS) |
83007196 | 4121 | il_print_rx_config_cmd(il); |
be663ab6 WYG |
4122 | #endif |
4123 | ||
46bc8d4b | 4124 | wake_up(&il->wait_command_queue); |
be663ab6 WYG |
4125 | |
4126 | /* Keep the restart process from trying to send host | |
4127 | * commands by clearing the INIT status bit */ | |
a6766ccd | 4128 | clear_bit(S_READY, &il->status); |
be663ab6 | 4129 | |
a6766ccd | 4130 | if (!test_bit(S_EXIT_PENDING, &il->status)) { |
58de00a4 | 4131 | IL_DBG(IL_DL_FW_ERRORS, |
e7392364 | 4132 | "Restarting adapter due to uCode error.\n"); |
be663ab6 | 4133 | |
46bc8d4b SG |
4134 | if (il->cfg->mod_params->restart_fw) |
4135 | queue_work(il->workqueue, &il->restart); | |
be663ab6 WYG |
4136 | } |
4137 | } | |
e2ebc833 | 4138 | EXPORT_SYMBOL(il_irq_handle_error); |
be663ab6 | 4139 | |
e7392364 | 4140 | static int |
775ed8ab | 4141 | _il_apm_stop_master(struct il_priv *il) |
be663ab6 WYG |
4142 | { |
4143 | int ret = 0; | |
4144 | ||
4145 | /* stop device's busmaster DMA activity */ | |
775ed8ab | 4146 | _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
be663ab6 | 4147 | |
e7392364 SG |
4148 | ret = |
4149 | _il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, | |
4150 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
586e45e3 | 4151 | if (ret < 0) |
9406f797 | 4152 | IL_WARN("Master Disable Timed Out, 100 usec\n"); |
be663ab6 | 4153 | |
58de00a4 | 4154 | D_INFO("stop master\n"); |
be663ab6 WYG |
4155 | |
4156 | return ret; | |
4157 | } | |
4158 | ||
e7392364 | 4159 | void |
775ed8ab | 4160 | _il_apm_stop(struct il_priv *il) |
be663ab6 | 4161 | { |
775ed8ab SG |
4162 | lockdep_assert_held(&il->reg_lock); |
4163 | ||
58de00a4 | 4164 | D_INFO("Stop card, put in low power state\n"); |
be663ab6 WYG |
4165 | |
4166 | /* Stop device's DMA activity */ | |
775ed8ab | 4167 | _il_apm_stop_master(il); |
be663ab6 WYG |
4168 | |
4169 | /* Reset the entire device */ | |
775ed8ab | 4170 | _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
be663ab6 WYG |
4171 | |
4172 | udelay(10); | |
4173 | ||
4174 | /* | |
4175 | * Clear "initialization complete" bit to move adapter from | |
4176 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
4177 | */ | |
775ed8ab SG |
4178 | _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
4179 | } | |
4180 | EXPORT_SYMBOL(_il_apm_stop); | |
4181 | ||
4182 | void | |
4183 | il_apm_stop(struct il_priv *il) | |
4184 | { | |
4185 | unsigned long flags; | |
4186 | ||
4187 | spin_lock_irqsave(&il->reg_lock, flags); | |
4188 | _il_apm_stop(il); | |
4189 | spin_unlock_irqrestore(&il->reg_lock, flags); | |
be663ab6 | 4190 | } |
e7392364 | 4191 | EXPORT_SYMBOL(il_apm_stop); |
be663ab6 WYG |
4192 | |
4193 | /* | |
4194 | * Start up NIC's basic functionality after it has been reset | |
e2ebc833 | 4195 | * (e.g. after platform boot, or shutdown via il_apm_stop()) |
be663ab6 WYG |
4196 | * NOTE: This does not load uCode nor start the embedded processor |
4197 | */ | |
e7392364 SG |
4198 | int |
4199 | il_apm_init(struct il_priv *il) | |
be663ab6 WYG |
4200 | { |
4201 | int ret = 0; | |
4202 | u16 lctl; | |
4203 | ||
58de00a4 | 4204 | D_INFO("Init card's basic functions\n"); |
be663ab6 WYG |
4205 | |
4206 | /* | |
4207 | * Use "set_bit" below rather than "write", to preserve any hardware | |
4208 | * bits already set by default after reset. | |
4209 | */ | |
4210 | ||
4211 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
46bc8d4b | 4212 | il_set_bit(il, CSR_GIO_CHICKEN_BITS, |
e7392364 | 4213 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); |
be663ab6 WYG |
4214 | |
4215 | /* | |
4216 | * Disable L0s without affecting L1; | |
4217 | * don't wait for ICH L0s (ICH bug W/A) | |
4218 | */ | |
46bc8d4b | 4219 | il_set_bit(il, CSR_GIO_CHICKEN_BITS, |
e7392364 | 4220 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
be663ab6 WYG |
4221 | |
4222 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
e7392364 | 4223 | il_set_bit(il, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); |
be663ab6 WYG |
4224 | |
4225 | /* | |
4226 | * Enable HAP INTA (interrupt from management bus) to | |
4227 | * wake device's PCI Express link L1a -> L0s | |
25985edc | 4228 | * NOTE: This is no-op for 3945 (non-existent bit) |
be663ab6 | 4229 | */ |
46bc8d4b | 4230 | il_set_bit(il, CSR_HW_IF_CONFIG_REG, |
e7392364 | 4231 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
be663ab6 WYG |
4232 | |
4233 | /* | |
4234 | * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. | |
4235 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
4236 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
4237 | * costs negligible amount of power savings. | |
4238 | * If not (unlikely), enable L0S, so there is at least some | |
4239 | * power savings, even without L1. | |
4240 | */ | |
89ef1ed2 | 4241 | if (il->cfg->set_l0s) { |
94e15613 | 4242 | pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl); |
f93eaffc | 4243 | if (lctl & PCI_EXP_LNKCTL_ASPM_L1) { |
be663ab6 | 4244 | /* L1-ASPM enabled; disable(!) L0S */ |
46bc8d4b | 4245 | il_set_bit(il, CSR_GIO_REG, |
e7392364 | 4246 | CSR_GIO_REG_VAL_L0S_ENABLED); |
58de00a4 | 4247 | D_POWER("L1 Enabled; Disabling L0S\n"); |
be663ab6 WYG |
4248 | } else { |
4249 | /* L1-ASPM disabled; enable(!) L0S */ | |
46bc8d4b | 4250 | il_clear_bit(il, CSR_GIO_REG, |
e7392364 | 4251 | CSR_GIO_REG_VAL_L0S_ENABLED); |
58de00a4 | 4252 | D_POWER("L1 Disabled; Enabling L0S\n"); |
be663ab6 WYG |
4253 | } |
4254 | } | |
4255 | ||
4256 | /* Configure analog phase-lock-loop before activating to D0A */ | |
89ef1ed2 | 4257 | if (il->cfg->pll_cfg_val) |
46bc8d4b | 4258 | il_set_bit(il, CSR_ANA_PLL_CFG, |
89ef1ed2 | 4259 | il->cfg->pll_cfg_val); |
be663ab6 WYG |
4260 | |
4261 | /* | |
4262 | * Set "initialization complete" bit to move adapter from | |
4263 | * D0U* --> D0A* (powered-up active) state. | |
4264 | */ | |
46bc8d4b | 4265 | il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
be663ab6 WYG |
4266 | |
4267 | /* | |
4268 | * Wait for clock stabilization; once stabilized, access to | |
db54eb57 | 4269 | * device-internal resources is supported, e.g. il_wr_prph() |
be663ab6 WYG |
4270 | * and accesses to uCode SRAM. |
4271 | */ | |
e7392364 SG |
4272 | ret = |
4273 | _il_poll_bit(il, CSR_GP_CNTRL, | |
4274 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
4275 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
be663ab6 | 4276 | if (ret < 0) { |
58de00a4 | 4277 | D_INFO("Failed to init the card\n"); |
be663ab6 WYG |
4278 | goto out; |
4279 | } | |
4280 | ||
4281 | /* | |
4282 | * Enable DMA and BSM (if used) clocks, wait for them to stabilize. | |
4283 | * BSM (Boostrap State Machine) is only in 3945 and 4965. | |
4284 | * | |
4285 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits | |
4286 | * do not disable clocks. This preserves any hardware bits already | |
4287 | * set by default in "CLK_CTRL_REG" after reset. | |
4288 | */ | |
89ef1ed2 | 4289 | if (il->cfg->use_bsm) |
db54eb57 | 4290 | il_wr_prph(il, APMG_CLK_EN_REG, |
e7392364 | 4291 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); |
be663ab6 | 4292 | else |
e7392364 | 4293 | il_wr_prph(il, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT); |
be663ab6 WYG |
4294 | udelay(20); |
4295 | ||
4296 | /* Disable L1-Active */ | |
46bc8d4b | 4297 | il_set_bits_prph(il, APMG_PCIDEV_STT_REG, |
e7392364 | 4298 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
be663ab6 WYG |
4299 | |
4300 | out: | |
4301 | return ret; | |
4302 | } | |
e7392364 | 4303 | EXPORT_SYMBOL(il_apm_init); |
be663ab6 | 4304 | |
e7392364 SG |
4305 | int |
4306 | il_set_tx_power(struct il_priv *il, s8 tx_power, bool force) | |
be663ab6 WYG |
4307 | { |
4308 | int ret; | |
4309 | s8 prev_tx_power; | |
43f12d47 | 4310 | bool defer; |
be663ab6 | 4311 | |
46bc8d4b | 4312 | lockdep_assert_held(&il->mutex); |
be663ab6 | 4313 | |
46bc8d4b | 4314 | if (il->tx_power_user_lmt == tx_power && !force) |
be663ab6 WYG |
4315 | return 0; |
4316 | ||
1600b875 | 4317 | if (!il->ops->send_tx_power) |
be663ab6 WYG |
4318 | return -EOPNOTSUPP; |
4319 | ||
332704a5 SG |
4320 | /* 0 dBm mean 1 milliwatt */ |
4321 | if (tx_power < 0) { | |
e7392364 | 4322 | IL_WARN("Requested user TXPOWER %d below 1 mW.\n", tx_power); |
be663ab6 WYG |
4323 | return -EINVAL; |
4324 | } | |
4325 | ||
46bc8d4b | 4326 | if (tx_power > il->tx_power_device_lmt) { |
e7392364 SG |
4327 | IL_WARN("Requested user TXPOWER %d above upper limit %d.\n", |
4328 | tx_power, il->tx_power_device_lmt); | |
be663ab6 WYG |
4329 | return -EINVAL; |
4330 | } | |
4331 | ||
46bc8d4b | 4332 | if (!il_is_ready_rf(il)) |
be663ab6 WYG |
4333 | return -EIO; |
4334 | ||
43f12d47 SG |
4335 | /* scan complete and commit_rxon use tx_power_next value, |
4336 | * it always need to be updated for newest request */ | |
46bc8d4b | 4337 | il->tx_power_next = tx_power; |
43f12d47 SG |
4338 | |
4339 | /* do not set tx power when scanning or channel changing */ | |
a6766ccd | 4340 | defer = test_bit(S_SCANNING, &il->status) || |
c8b03958 | 4341 | memcmp(&il->active, &il->staging, sizeof(il->staging)); |
43f12d47 | 4342 | if (defer && !force) { |
58de00a4 | 4343 | D_INFO("Deferring tx power set\n"); |
be663ab6 WYG |
4344 | return 0; |
4345 | } | |
4346 | ||
46bc8d4b SG |
4347 | prev_tx_power = il->tx_power_user_lmt; |
4348 | il->tx_power_user_lmt = tx_power; | |
be663ab6 | 4349 | |
1600b875 | 4350 | ret = il->ops->send_tx_power(il); |
be663ab6 WYG |
4351 | |
4352 | /* if fail to set tx_power, restore the orig. tx power */ | |
4353 | if (ret) { | |
46bc8d4b SG |
4354 | il->tx_power_user_lmt = prev_tx_power; |
4355 | il->tx_power_next = prev_tx_power; | |
be663ab6 WYG |
4356 | } |
4357 | return ret; | |
4358 | } | |
e2ebc833 | 4359 | EXPORT_SYMBOL(il_set_tx_power); |
be663ab6 | 4360 | |
e7392364 SG |
4361 | void |
4362 | il_send_bt_config(struct il_priv *il) | |
be663ab6 | 4363 | { |
e2ebc833 | 4364 | struct il_bt_cmd bt_cmd = { |
be663ab6 WYG |
4365 | .lead_time = BT_LEAD_TIME_DEF, |
4366 | .max_kill = BT_MAX_KILL_DEF, | |
4367 | .kill_ack_mask = 0, | |
4368 | .kill_cts_mask = 0, | |
4369 | }; | |
4370 | ||
4371 | if (!bt_coex_active) | |
4372 | bt_cmd.flags = BT_COEX_DISABLE; | |
4373 | else | |
4374 | bt_cmd.flags = BT_COEX_ENABLE; | |
4375 | ||
58de00a4 | 4376 | D_INFO("BT coex %s\n", |
e7392364 | 4377 | (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); |
be663ab6 | 4378 | |
e7392364 | 4379 | if (il_send_cmd_pdu(il, C_BT_CONFIG, sizeof(struct il_bt_cmd), &bt_cmd)) |
9406f797 | 4380 | IL_ERR("failed to send BT Coex Config\n"); |
be663ab6 | 4381 | } |
e2ebc833 | 4382 | EXPORT_SYMBOL(il_send_bt_config); |
be663ab6 | 4383 | |
e7392364 SG |
4384 | int |
4385 | il_send_stats_request(struct il_priv *il, u8 flags, bool clear) | |
be663ab6 | 4386 | { |
ebf0d90d | 4387 | struct il_stats_cmd stats_cmd = { |
e7392364 | 4388 | .configuration_flags = clear ? IL_STATS_CONF_CLEAR_STATS : 0, |
be663ab6 WYG |
4389 | }; |
4390 | ||
4391 | if (flags & CMD_ASYNC) | |
e7392364 SG |
4392 | return il_send_cmd_pdu_async(il, C_STATS, sizeof(struct il_stats_cmd), |
4393 | &stats_cmd, NULL); | |
be663ab6 | 4394 | else |
e7392364 SG |
4395 | return il_send_cmd_pdu(il, C_STATS, sizeof(struct il_stats_cmd), |
4396 | &stats_cmd); | |
be663ab6 | 4397 | } |
ebf0d90d | 4398 | EXPORT_SYMBOL(il_send_stats_request); |
be663ab6 | 4399 | |
e7392364 SG |
4400 | void |
4401 | il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4402 | { |
d3175167 | 4403 | #ifdef CONFIG_IWLEGACY_DEBUG |
dcae1c64 | 4404 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 4405 | struct il_sleep_notification *sleep = &(pkt->u.sleep_notif); |
58de00a4 | 4406 | D_RX("sleep mode: %d, src: %d\n", |
1722f8e1 | 4407 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); |
be663ab6 WYG |
4408 | #endif |
4409 | } | |
d2dfb33e | 4410 | EXPORT_SYMBOL(il_hdl_pm_sleep); |
be663ab6 | 4411 | |
e7392364 SG |
4412 | void |
4413 | il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4414 | { |
dcae1c64 | 4415 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e94a4099 | 4416 | u32 len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; |
e7392364 SG |
4417 | D_RADIO("Dumping %d bytes of unhandled notification for %s:\n", len, |
4418 | il_get_cmd_string(pkt->hdr.cmd)); | |
46bc8d4b | 4419 | il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len); |
be663ab6 | 4420 | } |
d2dfb33e | 4421 | EXPORT_SYMBOL(il_hdl_pm_debug_stats); |
be663ab6 | 4422 | |
e7392364 SG |
4423 | void |
4424 | il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4425 | { |
dcae1c64 | 4426 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
be663ab6 | 4427 | |
9406f797 | 4428 | IL_ERR("Error Reply type 0x%08X cmd %s (0x%02X) " |
e7392364 SG |
4429 | "seq 0x%04X ser 0x%08X\n", |
4430 | le32_to_cpu(pkt->u.err_resp.error_type), | |
4431 | il_get_cmd_string(pkt->u.err_resp.cmd_id), | |
4432 | pkt->u.err_resp.cmd_id, | |
4433 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), | |
4434 | le32_to_cpu(pkt->u.err_resp.error_info)); | |
be663ab6 | 4435 | } |
6e9848b4 | 4436 | EXPORT_SYMBOL(il_hdl_error); |
be663ab6 | 4437 | |
e7392364 SG |
4438 | void |
4439 | il_clear_isr_stats(struct il_priv *il) | |
be663ab6 | 4440 | { |
46bc8d4b | 4441 | memset(&il->isr_stats, 0, sizeof(il->isr_stats)); |
be663ab6 WYG |
4442 | } |
4443 | ||
e7392364 SG |
4444 | int |
4445 | il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, | |
4446 | const struct ieee80211_tx_queue_params *params) | |
be663ab6 | 4447 | { |
46bc8d4b | 4448 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
4449 | unsigned long flags; |
4450 | int q; | |
4451 | ||
58de00a4 | 4452 | D_MAC80211("enter\n"); |
be663ab6 | 4453 | |
46bc8d4b | 4454 | if (!il_is_ready_rf(il)) { |
58de00a4 | 4455 | D_MAC80211("leave - RF not ready\n"); |
be663ab6 WYG |
4456 | return -EIO; |
4457 | } | |
4458 | ||
4459 | if (queue >= AC_NUM) { | |
58de00a4 | 4460 | D_MAC80211("leave - queue >= AC_NUM %d\n", queue); |
be663ab6 WYG |
4461 | return 0; |
4462 | } | |
4463 | ||
4464 | q = AC_NUM - 1 - queue; | |
4465 | ||
46bc8d4b | 4466 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 4467 | |
8d44f2bd | 4468 | il->qos_data.def_qos_parm.ac[q].cw_min = |
e7392364 | 4469 | cpu_to_le16(params->cw_min); |
8d44f2bd | 4470 | il->qos_data.def_qos_parm.ac[q].cw_max = |
e7392364 | 4471 | cpu_to_le16(params->cw_max); |
8d44f2bd SG |
4472 | il->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
4473 | il->qos_data.def_qos_parm.ac[q].edca_txop = | |
e7392364 | 4474 | cpu_to_le16((params->txop * 32)); |
be663ab6 | 4475 | |
8d44f2bd | 4476 | il->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
be663ab6 | 4477 | |
46bc8d4b | 4478 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 4479 | |
58de00a4 | 4480 | D_MAC80211("leave\n"); |
be663ab6 WYG |
4481 | return 0; |
4482 | } | |
e2ebc833 | 4483 | EXPORT_SYMBOL(il_mac_conf_tx); |
be663ab6 | 4484 | |
e7392364 SG |
4485 | int |
4486 | il_mac_tx_last_beacon(struct ieee80211_hw *hw) | |
be663ab6 | 4487 | { |
46bc8d4b | 4488 | struct il_priv *il = hw->priv; |
9ce7b73c | 4489 | int ret; |
be663ab6 | 4490 | |
9ce7b73c SG |
4491 | D_MAC80211("enter\n"); |
4492 | ||
4493 | ret = (il->ibss_manager == IL_IBSS_MANAGER); | |
4494 | ||
4495 | D_MAC80211("leave ret %d\n", ret); | |
4496 | return ret; | |
be663ab6 | 4497 | } |
e2ebc833 | 4498 | EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon); |
be663ab6 WYG |
4499 | |
4500 | static int | |
83007196 | 4501 | il_set_mode(struct il_priv *il) |
be663ab6 | 4502 | { |
83007196 | 4503 | il_connection_init_rx_config(il); |
be663ab6 | 4504 | |
c9363551 SG |
4505 | if (il->ops->set_rxon_chain) |
4506 | il->ops->set_rxon_chain(il); | |
be663ab6 | 4507 | |
83007196 | 4508 | return il_commit_rxon(il); |
be663ab6 WYG |
4509 | } |
4510 | ||
be663ab6 | 4511 | int |
e2ebc833 | 4512 | il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
be663ab6 | 4513 | { |
46bc8d4b | 4514 | struct il_priv *il = hw->priv; |
be663ab6 | 4515 | int err; |
883a649b | 4516 | bool reset; |
be663ab6 | 4517 | |
46bc8d4b | 4518 | mutex_lock(&il->mutex); |
9ce7b73c | 4519 | D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
be663ab6 | 4520 | |
46bc8d4b | 4521 | if (!il_is_ready_rf(il)) { |
9406f797 | 4522 | IL_WARN("Try to add interface when device not ready\n"); |
be663ab6 WYG |
4523 | err = -EINVAL; |
4524 | goto out; | |
4525 | } | |
4526 | ||
883a649b SG |
4527 | /* |
4528 | * We do not support multiple virtual interfaces, but on hardware reset | |
4529 | * we have to add the same interface again. | |
4530 | */ | |
4531 | reset = (il->vif == vif); | |
4532 | if (il->vif && !reset) { | |
be663ab6 WYG |
4533 | err = -EOPNOTSUPP; |
4534 | goto out; | |
4535 | } | |
4536 | ||
83007196 | 4537 | il->vif = vif; |
20c47eba | 4538 | il->iw_mode = vif->type; |
be663ab6 | 4539 | |
83007196 | 4540 | err = il_set_mode(il); |
17d6e557 | 4541 | if (err) { |
883a649b SG |
4542 | IL_WARN("Fail to set mode %d\n", vif->type); |
4543 | if (!reset) { | |
4544 | il->vif = NULL; | |
4545 | il->iw_mode = NL80211_IFTYPE_STATION; | |
4546 | } | |
17d6e557 | 4547 | } |
be663ab6 | 4548 | |
e7392364 | 4549 | out: |
9ce7b73c | 4550 | D_MAC80211("leave err %d\n", err); |
46bc8d4b | 4551 | mutex_unlock(&il->mutex); |
be663ab6 | 4552 | |
be663ab6 WYG |
4553 | return err; |
4554 | } | |
e2ebc833 | 4555 | EXPORT_SYMBOL(il_mac_add_interface); |
be663ab6 | 4556 | |
e7392364 | 4557 | static void |
fa4cffcb | 4558 | il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif) |
be663ab6 | 4559 | { |
46bc8d4b | 4560 | lockdep_assert_held(&il->mutex); |
be663ab6 | 4561 | |
46bc8d4b SG |
4562 | if (il->scan_vif == vif) { |
4563 | il_scan_cancel_timeout(il, 200); | |
4564 | il_force_scan_end(il); | |
be663ab6 WYG |
4565 | } |
4566 | ||
fa4cffcb | 4567 | il_set_mode(il); |
be663ab6 WYG |
4568 | } |
4569 | ||
e7392364 SG |
4570 | void |
4571 | il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
be663ab6 | 4572 | { |
46bc8d4b | 4573 | struct il_priv *il = hw->priv; |
be663ab6 | 4574 | |
46bc8d4b | 4575 | mutex_lock(&il->mutex); |
9ce7b73c | 4576 | D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
be663ab6 | 4577 | |
83007196 SG |
4578 | WARN_ON(il->vif != vif); |
4579 | il->vif = NULL; | |
fa4cffcb SG |
4580 | il->iw_mode = NL80211_IFTYPE_UNSPECIFIED; |
4581 | il_teardown_interface(il, vif); | |
46bc8d4b | 4582 | memset(il->bssid, 0, ETH_ALEN); |
be663ab6 | 4583 | |
58de00a4 | 4584 | D_MAC80211("leave\n"); |
9ce7b73c | 4585 | mutex_unlock(&il->mutex); |
be663ab6 | 4586 | } |
e2ebc833 | 4587 | EXPORT_SYMBOL(il_mac_remove_interface); |
be663ab6 | 4588 | |
e7392364 SG |
4589 | int |
4590 | il_alloc_txq_mem(struct il_priv *il) | |
be663ab6 | 4591 | { |
46bc8d4b | 4592 | if (!il->txq) |
e7392364 SG |
4593 | il->txq = |
4594 | kzalloc(sizeof(struct il_tx_queue) * | |
89ef1ed2 | 4595 | il->cfg->num_of_queues, GFP_KERNEL); |
46bc8d4b | 4596 | if (!il->txq) { |
9406f797 | 4597 | IL_ERR("Not enough memory for txq\n"); |
be663ab6 WYG |
4598 | return -ENOMEM; |
4599 | } | |
4600 | return 0; | |
4601 | } | |
e2ebc833 | 4602 | EXPORT_SYMBOL(il_alloc_txq_mem); |
be663ab6 | 4603 | |
e7392364 | 4604 | void |
6668e4eb | 4605 | il_free_txq_mem(struct il_priv *il) |
be663ab6 | 4606 | { |
46bc8d4b SG |
4607 | kfree(il->txq); |
4608 | il->txq = NULL; | |
be663ab6 | 4609 | } |
6668e4eb | 4610 | EXPORT_SYMBOL(il_free_txq_mem); |
be663ab6 | 4611 | |
e7392364 SG |
4612 | int |
4613 | il_force_reset(struct il_priv *il, bool external) | |
be663ab6 | 4614 | { |
e2ebc833 | 4615 | struct il_force_reset *force_reset; |
be663ab6 | 4616 | |
a6766ccd | 4617 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
4618 | return -EINVAL; |
4619 | ||
46bc8d4b | 4620 | force_reset = &il->force_reset; |
be663ab6 WYG |
4621 | force_reset->reset_request_count++; |
4622 | if (!external) { | |
4623 | if (force_reset->last_force_reset_jiffies && | |
4624 | time_after(force_reset->last_force_reset_jiffies + | |
e7392364 | 4625 | force_reset->reset_duration, jiffies)) { |
58de00a4 | 4626 | D_INFO("force reset rejected\n"); |
be663ab6 WYG |
4627 | force_reset->reset_reject_count++; |
4628 | return -EAGAIN; | |
4629 | } | |
4630 | } | |
4631 | force_reset->reset_success_count++; | |
4632 | force_reset->last_force_reset_jiffies = jiffies; | |
dd6d2a8a SG |
4633 | |
4634 | /* | |
4635 | * if the request is from external(ex: debugfs), | |
4636 | * then always perform the request in regardless the module | |
4637 | * parameter setting | |
4638 | * if the request is from internal (uCode error or driver | |
4639 | * detect failure), then fw_restart module parameter | |
4640 | * need to be check before performing firmware reload | |
4641 | */ | |
4642 | ||
46bc8d4b | 4643 | if (!external && !il->cfg->mod_params->restart_fw) { |
58de00a4 | 4644 | D_INFO("Cancel firmware reload based on " |
e7392364 | 4645 | "module parameter setting\n"); |
dd6d2a8a | 4646 | return 0; |
be663ab6 | 4647 | } |
dd6d2a8a | 4648 | |
9406f797 | 4649 | IL_ERR("On demand firmware reload\n"); |
dd6d2a8a | 4650 | |
e2ebc833 | 4651 | /* Set the FW error flag -- cleared on il_down */ |
a6766ccd | 4652 | set_bit(S_FW_ERROR, &il->status); |
46bc8d4b | 4653 | wake_up(&il->wait_command_queue); |
dd6d2a8a SG |
4654 | /* |
4655 | * Keep the restart process from trying to send host | |
4656 | * commands by clearing the INIT status bit | |
4657 | */ | |
a6766ccd | 4658 | clear_bit(S_READY, &il->status); |
46bc8d4b | 4659 | queue_work(il->workqueue, &il->restart); |
dd6d2a8a | 4660 | |
be663ab6 WYG |
4661 | return 0; |
4662 | } | |
788f7a56 | 4663 | EXPORT_SYMBOL(il_force_reset); |
be663ab6 WYG |
4664 | |
4665 | int | |
e7392364 | 4666 | il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
be663ab6 WYG |
4667 | enum nl80211_iftype newtype, bool newp2p) |
4668 | { | |
46bc8d4b | 4669 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
4670 | int err; |
4671 | ||
46bc8d4b | 4672 | mutex_lock(&il->mutex); |
9ce7b73c SG |
4673 | D_MAC80211("enter: type %d, addr %pM newtype %d newp2p %d\n", |
4674 | vif->type, vif->addr, newtype, newp2p); | |
4675 | ||
4676 | if (newp2p) { | |
4677 | err = -EOPNOTSUPP; | |
4678 | goto out; | |
4679 | } | |
be663ab6 | 4680 | |
83007196 | 4681 | if (!il->vif || !il_is_ready_rf(il)) { |
ffd8c746 JB |
4682 | /* |
4683 | * Huh? But wait ... this can maybe happen when | |
4684 | * we're in the middle of a firmware restart! | |
4685 | */ | |
4686 | err = -EBUSY; | |
4687 | goto out; | |
4688 | } | |
4689 | ||
be663ab6 | 4690 | /* success */ |
be663ab6 | 4691 | vif->type = newtype; |
8c9c48d5 | 4692 | vif->p2p = false; |
fa4cffcb SG |
4693 | il->iw_mode = newtype; |
4694 | il_teardown_interface(il, vif); | |
be663ab6 WYG |
4695 | err = 0; |
4696 | ||
e7392364 | 4697 | out: |
9ce7b73c | 4698 | D_MAC80211("leave err %d\n", err); |
46bc8d4b | 4699 | mutex_unlock(&il->mutex); |
9ce7b73c | 4700 | |
be663ab6 WYG |
4701 | return err; |
4702 | } | |
e2ebc833 | 4703 | EXPORT_SYMBOL(il_mac_change_interface); |
be663ab6 | 4704 | |
39ecc01d | 4705 | void il_mac_flush(struct ieee80211_hw *hw, u32 queues, bool drop) |
70277f47 SG |
4706 | { |
4707 | struct il_priv *il = hw->priv; | |
4708 | unsigned long timeout = jiffies + msecs_to_jiffies(500); | |
4709 | int i; | |
4710 | ||
4711 | mutex_lock(&il->mutex); | |
4712 | D_MAC80211("enter\n"); | |
4713 | ||
4714 | if (il->txq == NULL) | |
4715 | goto out; | |
4716 | ||
4717 | for (i = 0; i < il->hw_params.max_txq_num; i++) { | |
4718 | struct il_queue *q; | |
4719 | ||
4720 | if (i == il->cmd_queue) | |
4721 | continue; | |
4722 | ||
4723 | q = &il->txq[i].q; | |
4724 | if (q->read_ptr == q->write_ptr) | |
4725 | continue; | |
4726 | ||
4727 | if (time_after(jiffies, timeout)) { | |
4728 | IL_ERR("Failed to flush queue %d\n", q->id); | |
4729 | break; | |
4730 | } | |
4731 | ||
4732 | msleep(20); | |
4733 | } | |
4734 | out: | |
4735 | D_MAC80211("leave\n"); | |
4736 | mutex_unlock(&il->mutex); | |
4737 | } | |
4738 | EXPORT_SYMBOL(il_mac_flush); | |
4739 | ||
be663ab6 WYG |
4740 | /* |
4741 | * On every watchdog tick we check (latest) time stamp. If it does not | |
4742 | * change during timeout period and queue is not empty we reset firmware. | |
4743 | */ | |
e7392364 SG |
4744 | static int |
4745 | il_check_stuck_queue(struct il_priv *il, int cnt) | |
be663ab6 | 4746 | { |
46bc8d4b | 4747 | struct il_tx_queue *txq = &il->txq[cnt]; |
e2ebc833 | 4748 | struct il_queue *q = &txq->q; |
be663ab6 | 4749 | unsigned long timeout; |
26b6da6b | 4750 | unsigned long now = jiffies; |
be663ab6 WYG |
4751 | int ret; |
4752 | ||
4753 | if (q->read_ptr == q->write_ptr) { | |
26b6da6b | 4754 | txq->time_stamp = now; |
be663ab6 WYG |
4755 | return 0; |
4756 | } | |
4757 | ||
e7392364 SG |
4758 | timeout = |
4759 | txq->time_stamp + | |
89ef1ed2 | 4760 | msecs_to_jiffies(il->cfg->wd_timeout); |
be663ab6 | 4761 | |
26b6da6b | 4762 | if (time_after(now, timeout)) { |
e7392364 | 4763 | IL_ERR("Queue %d stuck for %u ms.\n", q->id, |
26b6da6b | 4764 | jiffies_to_msecs(now - txq->time_stamp)); |
46bc8d4b | 4765 | ret = il_force_reset(il, false); |
be663ab6 WYG |
4766 | return (ret == -EAGAIN) ? 0 : 1; |
4767 | } | |
4768 | ||
4769 | return 0; | |
4770 | } | |
4771 | ||
4772 | /* | |
4773 | * Making watchdog tick be a quarter of timeout assure we will | |
4774 | * discover the queue hung between timeout and 1.25*timeout | |
4775 | */ | |
e2ebc833 | 4776 | #define IL_WD_TICK(timeout) ((timeout) / 4) |
be663ab6 WYG |
4777 | |
4778 | /* | |
4779 | * Watchdog timer callback, we check each tx queue for stuck, if if hung | |
4780 | * we reset the firmware. If everything is fine just rearm the timer. | |
4781 | */ | |
e7392364 SG |
4782 | void |
4783 | il_bg_watchdog(unsigned long data) | |
be663ab6 | 4784 | { |
46bc8d4b | 4785 | struct il_priv *il = (struct il_priv *)data; |
be663ab6 WYG |
4786 | int cnt; |
4787 | unsigned long timeout; | |
4788 | ||
a6766ccd | 4789 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
4790 | return; |
4791 | ||
89ef1ed2 | 4792 | timeout = il->cfg->wd_timeout; |
be663ab6 WYG |
4793 | if (timeout == 0) |
4794 | return; | |
4795 | ||
4796 | /* monitor and check for stuck cmd queue */ | |
46bc8d4b | 4797 | if (il_check_stuck_queue(il, il->cmd_queue)) |
be663ab6 WYG |
4798 | return; |
4799 | ||
4800 | /* monitor and check for other stuck queues */ | |
c2ca7d92 SG |
4801 | for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) { |
4802 | /* skip as we already checked the command queue */ | |
4803 | if (cnt == il->cmd_queue) | |
4804 | continue; | |
4805 | if (il_check_stuck_queue(il, cnt)) | |
4806 | return; | |
be663ab6 WYG |
4807 | } |
4808 | ||
e7392364 SG |
4809 | mod_timer(&il->watchdog, |
4810 | jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); | |
be663ab6 | 4811 | } |
e2ebc833 | 4812 | EXPORT_SYMBOL(il_bg_watchdog); |
be663ab6 | 4813 | |
e7392364 SG |
4814 | void |
4815 | il_setup_watchdog(struct il_priv *il) | |
be663ab6 | 4816 | { |
89ef1ed2 | 4817 | unsigned int timeout = il->cfg->wd_timeout; |
be663ab6 WYG |
4818 | |
4819 | if (timeout) | |
46bc8d4b | 4820 | mod_timer(&il->watchdog, |
e2ebc833 | 4821 | jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); |
be663ab6 | 4822 | else |
46bc8d4b | 4823 | del_timer(&il->watchdog); |
be663ab6 | 4824 | } |
e2ebc833 | 4825 | EXPORT_SYMBOL(il_setup_watchdog); |
be663ab6 WYG |
4826 | |
4827 | /* | |
4828 | * extended beacon time format | |
4829 | * time in usec will be changed into a 32-bit value in extended:internal format | |
4830 | * the extended part is the beacon counts | |
4831 | * the internal part is the time in usec within one beacon interval | |
4832 | */ | |
4833 | u32 | |
e7392364 | 4834 | il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval) |
be663ab6 WYG |
4835 | { |
4836 | u32 quot; | |
4837 | u32 rem; | |
4838 | u32 interval = beacon_interval * TIME_UNIT; | |
4839 | ||
4840 | if (!interval || !usec) | |
4841 | return 0; | |
4842 | ||
e7392364 SG |
4843 | quot = |
4844 | (usec / | |
4845 | interval) & (il_beacon_time_mask_high(il, | |
4846 | il->hw_params. | |
4847 | beacon_time_tsf_bits) >> il-> | |
4848 | hw_params.beacon_time_tsf_bits); | |
4849 | rem = | |
4850 | (usec % interval) & il_beacon_time_mask_low(il, | |
4851 | il->hw_params. | |
4852 | beacon_time_tsf_bits); | |
be663ab6 | 4853 | |
46bc8d4b | 4854 | return (quot << il->hw_params.beacon_time_tsf_bits) + rem; |
be663ab6 | 4855 | } |
e2ebc833 | 4856 | EXPORT_SYMBOL(il_usecs_to_beacons); |
be663ab6 WYG |
4857 | |
4858 | /* base is usually what we get from ucode with each received frame, | |
4859 | * the same as HW timer counter counting down | |
4860 | */ | |
e7392364 | 4861 | __le32 |
1722f8e1 | 4862 | il_add_beacon_time(struct il_priv *il, u32 base, u32 addon, |
e7392364 | 4863 | u32 beacon_interval) |
be663ab6 | 4864 | { |
46bc8d4b | 4865 | u32 base_low = base & il_beacon_time_mask_low(il, |
e7392364 SG |
4866 | il->hw_params. |
4867 | beacon_time_tsf_bits); | |
46bc8d4b | 4868 | u32 addon_low = addon & il_beacon_time_mask_low(il, |
e7392364 SG |
4869 | il->hw_params. |
4870 | beacon_time_tsf_bits); | |
be663ab6 | 4871 | u32 interval = beacon_interval * TIME_UNIT; |
46bc8d4b | 4872 | u32 res = (base & il_beacon_time_mask_high(il, |
e7392364 SG |
4873 | il->hw_params. |
4874 | beacon_time_tsf_bits)) + | |
4875 | (addon & il_beacon_time_mask_high(il, | |
4876 | il->hw_params. | |
4877 | beacon_time_tsf_bits)); | |
be663ab6 WYG |
4878 | |
4879 | if (base_low > addon_low) | |
4880 | res += base_low - addon_low; | |
4881 | else if (base_low < addon_low) { | |
4882 | res += interval + base_low - addon_low; | |
46bc8d4b | 4883 | res += (1 << il->hw_params.beacon_time_tsf_bits); |
be663ab6 | 4884 | } else |
46bc8d4b | 4885 | res += (1 << il->hw_params.beacon_time_tsf_bits); |
be663ab6 WYG |
4886 | |
4887 | return cpu_to_le32(res); | |
4888 | } | |
e2ebc833 | 4889 | EXPORT_SYMBOL(il_add_beacon_time); |
be663ab6 | 4890 | |
e82add55 | 4891 | #ifdef CONFIG_PM_SLEEP |
be663ab6 | 4892 | |
450e9038 | 4893 | static int |
e7392364 | 4894 | il_pci_suspend(struct device *device) |
be663ab6 WYG |
4895 | { |
4896 | struct pci_dev *pdev = to_pci_dev(device); | |
46bc8d4b | 4897 | struct il_priv *il = pci_get_drvdata(pdev); |
be663ab6 WYG |
4898 | |
4899 | /* | |
4900 | * This function is called when system goes into suspend state | |
e2ebc833 SG |
4901 | * mac80211 will call il_mac_stop() from the mac80211 suspend function |
4902 | * first but since il_mac_stop() has no knowledge of who the caller is, | |
be663ab6 WYG |
4903 | * it will not call apm_ops.stop() to stop the DMA operation. |
4904 | * Calling apm_ops.stop here to make sure we stop the DMA. | |
4905 | */ | |
46bc8d4b | 4906 | il_apm_stop(il); |
be663ab6 WYG |
4907 | |
4908 | return 0; | |
4909 | } | |
be663ab6 | 4910 | |
450e9038 | 4911 | static int |
e7392364 | 4912 | il_pci_resume(struct device *device) |
be663ab6 WYG |
4913 | { |
4914 | struct pci_dev *pdev = to_pci_dev(device); | |
46bc8d4b | 4915 | struct il_priv *il = pci_get_drvdata(pdev); |
be663ab6 WYG |
4916 | bool hw_rfkill = false; |
4917 | ||
4918 | /* | |
4919 | * We disable the RETRY_TIMEOUT register (0x41) to keep | |
4920 | * PCI Tx retries from interfering with C3 CPU state. | |
4921 | */ | |
4922 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
4923 | ||
46bc8d4b | 4924 | il_enable_interrupts(il); |
be663ab6 | 4925 | |
e7392364 | 4926 | if (!(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
be663ab6 WYG |
4927 | hw_rfkill = true; |
4928 | ||
4929 | if (hw_rfkill) | |
bc269a8e | 4930 | set_bit(S_RFKILL, &il->status); |
be663ab6 | 4931 | else |
bc269a8e | 4932 | clear_bit(S_RFKILL, &il->status); |
be663ab6 | 4933 | |
46bc8d4b | 4934 | wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill); |
be663ab6 WYG |
4935 | |
4936 | return 0; | |
4937 | } | |
be663ab6 | 4938 | |
450e9038 | 4939 | SIMPLE_DEV_PM_OPS(il_pm_ops, il_pci_suspend, il_pci_resume); |
e2ebc833 | 4940 | EXPORT_SYMBOL(il_pm_ops); |
be663ab6 | 4941 | |
e82add55 | 4942 | #endif /* CONFIG_PM_SLEEP */ |
be663ab6 WYG |
4943 | |
4944 | static void | |
83007196 | 4945 | il_update_qos(struct il_priv *il) |
be663ab6 | 4946 | { |
a6766ccd | 4947 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
4948 | return; |
4949 | ||
8d44f2bd | 4950 | il->qos_data.def_qos_parm.qos_flags = 0; |
be663ab6 | 4951 | |
8d44f2bd SG |
4952 | if (il->qos_data.qos_active) |
4953 | il->qos_data.def_qos_parm.qos_flags |= | |
e7392364 | 4954 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; |
be663ab6 | 4955 | |
1c03c462 | 4956 | if (il->ht.enabled) |
8d44f2bd | 4957 | il->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; |
be663ab6 | 4958 | |
58de00a4 | 4959 | D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
8d44f2bd | 4960 | il->qos_data.qos_active, il->qos_data.def_qos_parm.qos_flags); |
be663ab6 | 4961 | |
b96ed60c | 4962 | il_send_cmd_pdu_async(il, C_QOS_PARAM, sizeof(struct il_qosparam_cmd), |
8d44f2bd | 4963 | &il->qos_data.def_qos_parm, NULL); |
be663ab6 WYG |
4964 | } |
4965 | ||
4966 | /** | |
e2ebc833 | 4967 | * il_mac_config - mac80211 config callback |
be663ab6 | 4968 | */ |
e7392364 SG |
4969 | int |
4970 | il_mac_config(struct ieee80211_hw *hw, u32 changed) | |
be663ab6 | 4971 | { |
46bc8d4b | 4972 | struct il_priv *il = hw->priv; |
e2ebc833 | 4973 | const struct il_channel_info *ch_info; |
be663ab6 | 4974 | struct ieee80211_conf *conf = &hw->conf; |
675a0b04 | 4975 | struct ieee80211_channel *channel = conf->chandef.chan; |
46bc8d4b | 4976 | struct il_ht_config *ht_conf = &il->current_ht_config; |
be663ab6 WYG |
4977 | unsigned long flags = 0; |
4978 | int ret = 0; | |
4979 | u16 ch; | |
4980 | int scan_active = 0; | |
7c2cde2e | 4981 | bool ht_changed = false; |
be663ab6 | 4982 | |
46bc8d4b | 4983 | mutex_lock(&il->mutex); |
9ce7b73c | 4984 | D_MAC80211("enter: channel %d changed 0x%X\n", channel->hw_value, |
e7392364 | 4985 | changed); |
be663ab6 | 4986 | |
a6766ccd | 4987 | if (unlikely(test_bit(S_SCANNING, &il->status))) { |
be663ab6 | 4988 | scan_active = 1; |
58de00a4 | 4989 | D_MAC80211("scan active\n"); |
be663ab6 WYG |
4990 | } |
4991 | ||
e7392364 SG |
4992 | if (changed & |
4993 | (IEEE80211_CONF_CHANGE_SMPS | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
be663ab6 | 4994 | /* mac80211 uses static for non-HT which is what we want */ |
46bc8d4b | 4995 | il->current_ht_config.smps = conf->smps_mode; |
be663ab6 WYG |
4996 | |
4997 | /* | |
4998 | * Recalculate chain counts. | |
4999 | * | |
5000 | * If monitor mode is enabled then mac80211 will | |
5001 | * set up the SM PS mode to OFF if an HT channel is | |
5002 | * configured. | |
5003 | */ | |
c9363551 SG |
5004 | if (il->ops->set_rxon_chain) |
5005 | il->ops->set_rxon_chain(il); | |
be663ab6 WYG |
5006 | } |
5007 | ||
5008 | /* during scanning mac80211 will delay channel setting until | |
5009 | * scan finish with changed = 0 | |
5010 | */ | |
5011 | if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { | |
17d6e557 | 5012 | |
be663ab6 WYG |
5013 | if (scan_active) |
5014 | goto set_ch_out; | |
5015 | ||
5016 | ch = channel->hw_value; | |
46bc8d4b | 5017 | ch_info = il_get_channel_info(il, channel->band, ch); |
e2ebc833 | 5018 | if (!il_is_channel_valid(ch_info)) { |
58de00a4 | 5019 | D_MAC80211("leave - invalid channel\n"); |
be663ab6 WYG |
5020 | ret = -EINVAL; |
5021 | goto set_ch_out; | |
5022 | } | |
5023 | ||
46bc8d4b | 5024 | if (il->iw_mode == NL80211_IFTYPE_ADHOC && |
e2ebc833 | 5025 | !il_is_channel_ibss(ch_info)) { |
58de00a4 | 5026 | D_MAC80211("leave - not IBSS channel\n"); |
eb85de3f SG |
5027 | ret = -EINVAL; |
5028 | goto set_ch_out; | |
5029 | } | |
5030 | ||
46bc8d4b | 5031 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 5032 | |
17d6e557 | 5033 | /* Configure HT40 channels */ |
1c03c462 SG |
5034 | if (il->ht.enabled != conf_is_ht(conf)) { |
5035 | il->ht.enabled = conf_is_ht(conf); | |
17d6e557 SG |
5036 | ht_changed = true; |
5037 | } | |
1c03c462 | 5038 | if (il->ht.enabled) { |
17d6e557 | 5039 | if (conf_is_ht40_minus(conf)) { |
1c03c462 | 5040 | il->ht.extension_chan_offset = |
e7392364 | 5041 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
1c03c462 | 5042 | il->ht.is_40mhz = true; |
17d6e557 | 5043 | } else if (conf_is_ht40_plus(conf)) { |
1c03c462 | 5044 | il->ht.extension_chan_offset = |
e7392364 | 5045 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
1c03c462 | 5046 | il->ht.is_40mhz = true; |
17d6e557 | 5047 | } else { |
1c03c462 | 5048 | il->ht.extension_chan_offset = |
e7392364 | 5049 | IEEE80211_HT_PARAM_CHA_SEC_NONE; |
1c03c462 | 5050 | il->ht.is_40mhz = false; |
17d6e557 SG |
5051 | } |
5052 | } else | |
1c03c462 | 5053 | il->ht.is_40mhz = false; |
be663ab6 | 5054 | |
17d6e557 SG |
5055 | /* |
5056 | * Default to no protection. Protection mode will | |
5057 | * later be set from BSS config in il_ht_conf | |
5058 | */ | |
1c03c462 | 5059 | il->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; |
be663ab6 | 5060 | |
17d6e557 SG |
5061 | /* if we are switching from ht to 2.4 clear flags |
5062 | * from any ht related info since 2.4 does not | |
5063 | * support ht */ | |
c8b03958 SG |
5064 | if ((le16_to_cpu(il->staging.channel) != ch)) |
5065 | il->staging.flags = 0; | |
be663ab6 | 5066 | |
83007196 | 5067 | il_set_rxon_channel(il, channel); |
17d6e557 | 5068 | il_set_rxon_ht(il, ht_conf); |
be663ab6 | 5069 | |
83007196 | 5070 | il_set_flags_for_band(il, channel->band, il->vif); |
be663ab6 | 5071 | |
46bc8d4b | 5072 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 5073 | |
c9363551 SG |
5074 | if (il->ops->update_bcast_stations) |
5075 | ret = il->ops->update_bcast_stations(il); | |
be663ab6 | 5076 | |
e7392364 | 5077 | set_ch_out: |
be663ab6 WYG |
5078 | /* The list of supported rates and rate mask can be different |
5079 | * for each band; since the band may have changed, reset | |
5080 | * the rate mask to what mac80211 lists */ | |
46bc8d4b | 5081 | il_set_rate(il); |
be663ab6 WYG |
5082 | } |
5083 | ||
e7392364 | 5084 | if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) { |
46bc8d4b | 5085 | ret = il_power_update_mode(il, false); |
be663ab6 | 5086 | if (ret) |
58de00a4 | 5087 | D_MAC80211("Error setting sleep level\n"); |
be663ab6 WYG |
5088 | } |
5089 | ||
5090 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
e7392364 SG |
5091 | D_MAC80211("TX Power old=%d new=%d\n", il->tx_power_user_lmt, |
5092 | conf->power_level); | |
be663ab6 | 5093 | |
46bc8d4b | 5094 | il_set_tx_power(il, conf->power_level, false); |
be663ab6 WYG |
5095 | } |
5096 | ||
46bc8d4b | 5097 | if (!il_is_ready(il)) { |
58de00a4 | 5098 | D_MAC80211("leave - not ready\n"); |
be663ab6 WYG |
5099 | goto out; |
5100 | } | |
5101 | ||
5102 | if (scan_active) | |
5103 | goto out; | |
5104 | ||
c8b03958 | 5105 | if (memcmp(&il->active, &il->staging, sizeof(il->staging))) |
83007196 | 5106 | il_commit_rxon(il); |
17d6e557 SG |
5107 | else |
5108 | D_INFO("Not re-sending same RXON configuration.\n"); | |
5109 | if (ht_changed) | |
83007196 | 5110 | il_update_qos(il); |
be663ab6 WYG |
5111 | |
5112 | out: | |
9ce7b73c | 5113 | D_MAC80211("leave ret %d\n", ret); |
46bc8d4b | 5114 | mutex_unlock(&il->mutex); |
9ce7b73c | 5115 | |
be663ab6 WYG |
5116 | return ret; |
5117 | } | |
e2ebc833 | 5118 | EXPORT_SYMBOL(il_mac_config); |
be663ab6 | 5119 | |
e7392364 SG |
5120 | void |
5121 | il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
be663ab6 | 5122 | { |
46bc8d4b | 5123 | struct il_priv *il = hw->priv; |
be663ab6 | 5124 | unsigned long flags; |
be663ab6 | 5125 | |
46bc8d4b | 5126 | mutex_lock(&il->mutex); |
9ce7b73c | 5127 | D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
be663ab6 | 5128 | |
46bc8d4b | 5129 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 5130 | |
9ce7b73c | 5131 | memset(&il->current_ht_config, 0, sizeof(struct il_ht_config)); |
be663ab6 WYG |
5132 | |
5133 | /* new association get rid of ibss beacon skb */ | |
46bc8d4b SG |
5134 | if (il->beacon_skb) |
5135 | dev_kfree_skb(il->beacon_skb); | |
46bc8d4b | 5136 | il->beacon_skb = NULL; |
46bc8d4b | 5137 | il->timestamp = 0; |
be663ab6 | 5138 | |
46bc8d4b | 5139 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 5140 | |
46bc8d4b SG |
5141 | il_scan_cancel_timeout(il, 100); |
5142 | if (!il_is_ready_rf(il)) { | |
58de00a4 | 5143 | D_MAC80211("leave - not ready\n"); |
46bc8d4b | 5144 | mutex_unlock(&il->mutex); |
be663ab6 WYG |
5145 | return; |
5146 | } | |
5147 | ||
9ce7b73c | 5148 | /* we are restarting association process */ |
c8b03958 | 5149 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
83007196 | 5150 | il_commit_rxon(il); |
be663ab6 | 5151 | |
46bc8d4b | 5152 | il_set_rate(il); |
be663ab6 | 5153 | |
58de00a4 | 5154 | D_MAC80211("leave\n"); |
9ce7b73c | 5155 | mutex_unlock(&il->mutex); |
be663ab6 | 5156 | } |
e2ebc833 | 5157 | EXPORT_SYMBOL(il_mac_reset_tsf); |
be663ab6 | 5158 | |
e7392364 SG |
5159 | static void |
5160 | il_ht_conf(struct il_priv *il, struct ieee80211_vif *vif) | |
be663ab6 | 5161 | { |
46bc8d4b | 5162 | struct il_ht_config *ht_conf = &il->current_ht_config; |
be663ab6 WYG |
5163 | struct ieee80211_sta *sta; |
5164 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; | |
be663ab6 | 5165 | |
58de00a4 | 5166 | D_ASSOC("enter:\n"); |
be663ab6 | 5167 | |
1c03c462 | 5168 | if (!il->ht.enabled) |
be663ab6 WYG |
5169 | return; |
5170 | ||
1c03c462 | 5171 | il->ht.protection = |
e7392364 | 5172 | bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; |
1c03c462 | 5173 | il->ht.non_gf_sta_present = |
e7392364 SG |
5174 | !!(bss_conf-> |
5175 | ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); | |
be663ab6 WYG |
5176 | |
5177 | ht_conf->single_chain_sufficient = false; | |
5178 | ||
5179 | switch (vif->type) { | |
5180 | case NL80211_IFTYPE_STATION: | |
5181 | rcu_read_lock(); | |
5182 | sta = ieee80211_find_sta(vif, bss_conf->bssid); | |
5183 | if (sta) { | |
5184 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; | |
5185 | int maxstreams; | |
5186 | ||
e7392364 SG |
5187 | maxstreams = |
5188 | (ht_cap->mcs. | |
5189 | tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
5190 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
be663ab6 WYG |
5191 | maxstreams += 1; |
5192 | ||
232913b5 SG |
5193 | if (ht_cap->mcs.rx_mask[1] == 0 && |
5194 | ht_cap->mcs.rx_mask[2] == 0) | |
be663ab6 WYG |
5195 | ht_conf->single_chain_sufficient = true; |
5196 | if (maxstreams <= 1) | |
5197 | ht_conf->single_chain_sufficient = true; | |
5198 | } else { | |
5199 | /* | |
5200 | * If at all, this can only happen through a race | |
5201 | * when the AP disconnects us while we're still | |
5202 | * setting up the connection, in that case mac80211 | |
5203 | * will soon tell us about that. | |
5204 | */ | |
5205 | ht_conf->single_chain_sufficient = true; | |
5206 | } | |
5207 | rcu_read_unlock(); | |
5208 | break; | |
5209 | case NL80211_IFTYPE_ADHOC: | |
5210 | ht_conf->single_chain_sufficient = true; | |
5211 | break; | |
5212 | default: | |
5213 | break; | |
5214 | } | |
5215 | ||
58de00a4 | 5216 | D_ASSOC("leave\n"); |
be663ab6 WYG |
5217 | } |
5218 | ||
e7392364 SG |
5219 | static inline void |
5220 | il_set_no_assoc(struct il_priv *il, struct ieee80211_vif *vif) | |
be663ab6 | 5221 | { |
be663ab6 WYG |
5222 | /* |
5223 | * inform the ucode that there is no longer an | |
5224 | * association and that no more packets should be | |
5225 | * sent | |
5226 | */ | |
c8b03958 SG |
5227 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
5228 | il->staging.assoc_id = 0; | |
83007196 | 5229 | il_commit_rxon(il); |
be663ab6 WYG |
5230 | } |
5231 | ||
e7392364 SG |
5232 | static void |
5233 | il_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
be663ab6 | 5234 | { |
46bc8d4b | 5235 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
5236 | unsigned long flags; |
5237 | __le64 timestamp; | |
5238 | struct sk_buff *skb = ieee80211_beacon_get(hw, vif); | |
5239 | ||
5240 | if (!skb) | |
5241 | return; | |
5242 | ||
58de00a4 | 5243 | D_MAC80211("enter\n"); |
be663ab6 | 5244 | |
46bc8d4b | 5245 | lockdep_assert_held(&il->mutex); |
be663ab6 | 5246 | |
83007196 SG |
5247 | if (!il->beacon_enabled) { |
5248 | IL_ERR("update beacon with no beaconing enabled\n"); | |
be663ab6 WYG |
5249 | dev_kfree_skb(skb); |
5250 | return; | |
5251 | } | |
5252 | ||
46bc8d4b | 5253 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 5254 | |
46bc8d4b SG |
5255 | if (il->beacon_skb) |
5256 | dev_kfree_skb(il->beacon_skb); | |
be663ab6 | 5257 | |
46bc8d4b | 5258 | il->beacon_skb = skb; |
be663ab6 WYG |
5259 | |
5260 | timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; | |
46bc8d4b | 5261 | il->timestamp = le64_to_cpu(timestamp); |
be663ab6 | 5262 | |
58de00a4 | 5263 | D_MAC80211("leave\n"); |
46bc8d4b | 5264 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 5265 | |
46bc8d4b | 5266 | if (!il_is_ready_rf(il)) { |
58de00a4 | 5267 | D_MAC80211("leave - RF not ready\n"); |
be663ab6 WYG |
5268 | return; |
5269 | } | |
5270 | ||
c9363551 | 5271 | il->ops->post_associate(il); |
be663ab6 WYG |
5272 | } |
5273 | ||
e7392364 SG |
5274 | void |
5275 | il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
5276 | struct ieee80211_bss_conf *bss_conf, u32 changes) | |
be663ab6 | 5277 | { |
46bc8d4b | 5278 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
5279 | int ret; |
5280 | ||
46bc8d4b | 5281 | mutex_lock(&il->mutex); |
9ce7b73c | 5282 | D_MAC80211("enter: changes 0x%x\n", changes); |
be663ab6 | 5283 | |
46bc8d4b | 5284 | if (!il_is_alive(il)) { |
9ce7b73c | 5285 | D_MAC80211("leave - not alive\n"); |
46bc8d4b | 5286 | mutex_unlock(&il->mutex); |
28a6e577 SG |
5287 | return; |
5288 | } | |
5289 | ||
be663ab6 WYG |
5290 | if (changes & BSS_CHANGED_QOS) { |
5291 | unsigned long flags; | |
5292 | ||
46bc8d4b | 5293 | spin_lock_irqsave(&il->lock, flags); |
8d44f2bd | 5294 | il->qos_data.qos_active = bss_conf->qos; |
83007196 | 5295 | il_update_qos(il); |
46bc8d4b | 5296 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 WYG |
5297 | } |
5298 | ||
5299 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
83007196 | 5300 | /* FIXME: can we remove beacon_enabled ? */ |
be663ab6 | 5301 | if (vif->bss_conf.enable_beacon) |
83007196 | 5302 | il->beacon_enabled = true; |
be663ab6 | 5303 | else |
83007196 | 5304 | il->beacon_enabled = false; |
be663ab6 WYG |
5305 | } |
5306 | ||
5307 | if (changes & BSS_CHANGED_BSSID) { | |
58de00a4 | 5308 | D_MAC80211("BSSID %pM\n", bss_conf->bssid); |
be663ab6 | 5309 | |
8cdbab7f SG |
5310 | /* |
5311 | * On passive channel we wait with blocked queues to see if | |
5312 | * there is traffic on that channel. If no frame will be | |
5313 | * received (what is very unlikely since scan detects AP on | |
5314 | * that channel, but theoretically possible), mac80211 associate | |
5315 | * procedure will time out and mac80211 will call us with NULL | |
5316 | * bssid. We have to unblock queues on such condition. | |
5317 | */ | |
5318 | if (is_zero_ether_addr(bss_conf->bssid)) | |
5319 | il_wake_queues_by_reason(il, IL_STOP_REASON_PASSIVE); | |
5320 | ||
be663ab6 | 5321 | /* |
e92109be SG |
5322 | * If there is currently a HW scan going on in the background, |
5323 | * then we need to cancel it, otherwise sometimes we are not | |
5324 | * able to authenticate (FIXME: why ?) | |
be663ab6 | 5325 | */ |
46bc8d4b | 5326 | if (il_scan_cancel_timeout(il, 100)) { |
9ce7b73c | 5327 | D_MAC80211("leave - scan abort failed\n"); |
46bc8d4b | 5328 | mutex_unlock(&il->mutex); |
be663ab6 WYG |
5329 | return; |
5330 | } | |
5331 | ||
5332 | /* mac80211 only sets assoc when in STATION mode */ | |
e92109be | 5333 | memcpy(il->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); |
be663ab6 | 5334 | |
e92109be SG |
5335 | /* FIXME: currently needed in a few places */ |
5336 | memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); | |
be663ab6 WYG |
5337 | } |
5338 | ||
5339 | /* | |
5340 | * This needs to be after setting the BSSID in case | |
5341 | * mac80211 decides to do both changes at once because | |
5342 | * it will invoke post_associate. | |
5343 | */ | |
232913b5 | 5344 | if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON)) |
e2ebc833 | 5345 | il_beacon_update(hw, vif); |
be663ab6 WYG |
5346 | |
5347 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { | |
e7392364 | 5348 | D_MAC80211("ERP_PREAMBLE %d\n", bss_conf->use_short_preamble); |
be663ab6 | 5349 | if (bss_conf->use_short_preamble) |
c8b03958 | 5350 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 | 5351 | else |
c8b03958 | 5352 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 WYG |
5353 | } |
5354 | ||
5355 | if (changes & BSS_CHANGED_ERP_CTS_PROT) { | |
e7392364 | 5356 | D_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot); |
232913b5 | 5357 | if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ) |
c8b03958 | 5358 | il->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; |
be663ab6 | 5359 | else |
c8b03958 | 5360 | il->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; |
be663ab6 | 5361 | if (bss_conf->use_cts_prot) |
c8b03958 | 5362 | il->staging.flags |= RXON_FLG_SELF_CTS_EN; |
be663ab6 | 5363 | else |
c8b03958 | 5364 | il->staging.flags &= ~RXON_FLG_SELF_CTS_EN; |
be663ab6 WYG |
5365 | } |
5366 | ||
5367 | if (changes & BSS_CHANGED_BASIC_RATES) { | |
5368 | /* XXX use this information | |
5369 | * | |
e2ebc833 | 5370 | * To do that, remove code from il_set_rate() and put something |
be663ab6 WYG |
5371 | * like this here: |
5372 | * | |
e7392364 | 5373 | if (A-band) |
c8b03958 | 5374 | il->staging.ofdm_basic_rates = |
e7392364 SG |
5375 | bss_conf->basic_rates; |
5376 | else | |
c8b03958 | 5377 | il->staging.ofdm_basic_rates = |
e7392364 | 5378 | bss_conf->basic_rates >> 4; |
c8b03958 | 5379 | il->staging.cck_basic_rates = |
e7392364 | 5380 | bss_conf->basic_rates & 0xF; |
be663ab6 WYG |
5381 | */ |
5382 | } | |
5383 | ||
5384 | if (changes & BSS_CHANGED_HT) { | |
46bc8d4b | 5385 | il_ht_conf(il, vif); |
be663ab6 | 5386 | |
c9363551 SG |
5387 | if (il->ops->set_rxon_chain) |
5388 | il->ops->set_rxon_chain(il); | |
be663ab6 WYG |
5389 | } |
5390 | ||
5391 | if (changes & BSS_CHANGED_ASSOC) { | |
58de00a4 | 5392 | D_MAC80211("ASSOC %d\n", bss_conf->assoc); |
be663ab6 | 5393 | if (bss_conf->assoc) { |
8c358bcd | 5394 | il->timestamp = bss_conf->sync_tsf; |
be663ab6 | 5395 | |
46bc8d4b | 5396 | if (!il_is_rfkill(il)) |
c9363551 | 5397 | il->ops->post_associate(il); |
be663ab6 | 5398 | } else |
46bc8d4b | 5399 | il_set_no_assoc(il, vif); |
be663ab6 WYG |
5400 | } |
5401 | ||
c8b03958 | 5402 | if (changes && il_is_associated(il) && bss_conf->aid) { |
e7392364 | 5403 | D_MAC80211("Changes (%#x) while associated\n", changes); |
83007196 | 5404 | ret = il_send_rxon_assoc(il); |
be663ab6 WYG |
5405 | if (!ret) { |
5406 | /* Sync active_rxon with latest change. */ | |
c8b03958 | 5407 | memcpy((void *)&il->active, &il->staging, |
e7392364 | 5408 | sizeof(struct il_rxon_cmd)); |
be663ab6 WYG |
5409 | } |
5410 | } | |
5411 | ||
5412 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
5413 | if (vif->bss_conf.enable_beacon) { | |
c8b03958 | 5414 | memcpy(il->staging.bssid_addr, bss_conf->bssid, |
e7392364 | 5415 | ETH_ALEN); |
46bc8d4b | 5416 | memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); |
c9363551 | 5417 | il->ops->config_ap(il); |
be663ab6 | 5418 | } else |
46bc8d4b | 5419 | il_set_no_assoc(il, vif); |
be663ab6 WYG |
5420 | } |
5421 | ||
5422 | if (changes & BSS_CHANGED_IBSS) { | |
9ce7b73c SG |
5423 | ret = il->ops->manage_ibss_station(il, vif, |
5424 | bss_conf->ibss_joined); | |
be663ab6 | 5425 | if (ret) |
9406f797 | 5426 | IL_ERR("failed to %s IBSS station %pM\n", |
e7392364 SG |
5427 | bss_conf->ibss_joined ? "add" : "remove", |
5428 | bss_conf->bssid); | |
be663ab6 WYG |
5429 | } |
5430 | ||
58de00a4 | 5431 | D_MAC80211("leave\n"); |
9ce7b73c | 5432 | mutex_unlock(&il->mutex); |
be663ab6 | 5433 | } |
e2ebc833 | 5434 | EXPORT_SYMBOL(il_mac_bss_info_changed); |
be663ab6 | 5435 | |
e7392364 SG |
5436 | irqreturn_t |
5437 | il_isr(int irq, void *data) | |
be663ab6 | 5438 | { |
46bc8d4b | 5439 | struct il_priv *il = data; |
be663ab6 WYG |
5440 | u32 inta, inta_mask; |
5441 | u32 inta_fh; | |
5442 | unsigned long flags; | |
46bc8d4b | 5443 | if (!il) |
be663ab6 WYG |
5444 | return IRQ_NONE; |
5445 | ||
46bc8d4b | 5446 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 WYG |
5447 | |
5448 | /* Disable (but don't clear!) interrupts here to avoid | |
5449 | * back-to-back ISRs and sporadic interrupts from our NIC. | |
5450 | * If we have something to service, the tasklet will re-enable ints. | |
5451 | * If we *don't* have something, we'll re-enable before leaving here. */ | |
e7392364 | 5452 | inta_mask = _il_rd(il, CSR_INT_MASK); /* just for debug */ |
841b2cca | 5453 | _il_wr(il, CSR_INT_MASK, 0x00000000); |
be663ab6 WYG |
5454 | |
5455 | /* Discover which interrupts are active/pending */ | |
841b2cca SG |
5456 | inta = _il_rd(il, CSR_INT); |
5457 | inta_fh = _il_rd(il, CSR_FH_INT_STATUS); | |
be663ab6 WYG |
5458 | |
5459 | /* Ignore interrupt if there's nothing in NIC to service. | |
5460 | * This may be due to IRQ shared with another device, | |
5461 | * or due to sporadic interrupts thrown from our NIC. */ | |
5462 | if (!inta && !inta_fh) { | |
e7392364 | 5463 | D_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n"); |
be663ab6 WYG |
5464 | goto none; |
5465 | } | |
5466 | ||
232913b5 | 5467 | if (inta == 0xFFFFFFFF || (inta & 0xFFFFFFF0) == 0xa5a5a5a0) { |
be663ab6 WYG |
5468 | /* Hardware disappeared. It might have already raised |
5469 | * an interrupt */ | |
9406f797 | 5470 | IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta); |
be663ab6 WYG |
5471 | goto unplugged; |
5472 | } | |
5473 | ||
e7392364 SG |
5474 | D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask, |
5475 | inta_fh); | |
be663ab6 WYG |
5476 | |
5477 | inta &= ~CSR_INT_BIT_SCD; | |
5478 | ||
e2ebc833 | 5479 | /* il_irq_tasklet() will service interrupts and re-enable them */ |
be663ab6 | 5480 | if (likely(inta || inta_fh)) |
46bc8d4b | 5481 | tasklet_schedule(&il->irq_tasklet); |
be663ab6 WYG |
5482 | |
5483 | unplugged: | |
46bc8d4b | 5484 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 WYG |
5485 | return IRQ_HANDLED; |
5486 | ||
5487 | none: | |
5488 | /* re-enable interrupts here since we don't have anything to service. */ | |
93fd74e3 | 5489 | /* only Re-enable if disabled by irq */ |
a6766ccd | 5490 | if (test_bit(S_INT_ENABLED, &il->status)) |
46bc8d4b SG |
5491 | il_enable_interrupts(il); |
5492 | spin_unlock_irqrestore(&il->lock, flags); | |
be663ab6 WYG |
5493 | return IRQ_NONE; |
5494 | } | |
e2ebc833 | 5495 | EXPORT_SYMBOL(il_isr); |
be663ab6 WYG |
5496 | |
5497 | /* | |
e2ebc833 | 5498 | * il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this |
be663ab6 WYG |
5499 | * function. |
5500 | */ | |
e7392364 SG |
5501 | void |
5502 | il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info, | |
1722f8e1 | 5503 | __le16 fc, __le32 *tx_flags) |
be663ab6 WYG |
5504 | { |
5505 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { | |
5506 | *tx_flags |= TX_CMD_FLG_RTS_MSK; | |
5507 | *tx_flags &= ~TX_CMD_FLG_CTS_MSK; | |
5508 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
5509 | ||
5510 | if (!ieee80211_is_mgmt(fc)) | |
5511 | return; | |
5512 | ||
5513 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
5514 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
5515 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
5516 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
5517 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
5518 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
5519 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
5520 | break; | |
5521 | } | |
e7392364 SG |
5522 | } else if (info->control.rates[0]. |
5523 | flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { | |
be663ab6 WYG |
5524 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
5525 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
5526 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
5527 | } | |
5528 | } | |
e2ebc833 | 5529 | EXPORT_SYMBOL(il_tx_cmd_protection); |