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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> | |
0cdc2136 SG |
36 | #include <linux/pci.h> |
37 | #include <linux/dma-mapping.h> | |
38 | #include <linux/delay.h> | |
39 | #include <linux/skbuff.h> | |
be663ab6 WYG |
40 | #include <net/mac80211.h> |
41 | ||
98613be0 | 42 | #include "common.h" |
be663ab6 | 43 | |
17d4eca6 SG |
44 | int |
45 | _il_poll_bit(struct il_priv *il, u32 addr, u32 bits, u32 mask, int timeout) | |
46 | { | |
47 | const int interval = 10; /* microseconds */ | |
48 | int t = 0; | |
49 | ||
50 | do { | |
51 | if ((_il_rd(il, addr) & mask) == (bits & mask)) | |
52 | return t; | |
53 | udelay(interval); | |
54 | t += interval; | |
55 | } while (t < timeout); | |
56 | ||
57 | return -ETIMEDOUT; | |
58 | } | |
59 | EXPORT_SYMBOL(_il_poll_bit); | |
60 | ||
61 | void | |
62 | il_set_bit(struct il_priv *p, u32 r, u32 m) | |
63 | { | |
64 | unsigned long reg_flags; | |
65 | ||
66 | spin_lock_irqsave(&p->reg_lock, reg_flags); | |
67 | _il_set_bit(p, r, m); | |
68 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); | |
69 | } | |
70 | EXPORT_SYMBOL(il_set_bit); | |
71 | ||
72 | void | |
73 | il_clear_bit(struct il_priv *p, u32 r, u32 m) | |
74 | { | |
75 | unsigned long reg_flags; | |
76 | ||
77 | spin_lock_irqsave(&p->reg_lock, reg_flags); | |
78 | _il_clear_bit(p, r, m); | |
79 | spin_unlock_irqrestore(&p->reg_lock, reg_flags); | |
80 | } | |
81 | EXPORT_SYMBOL(il_clear_bit); | |
82 | ||
1e0f32a4 | 83 | bool |
17d4eca6 SG |
84 | _il_grab_nic_access(struct il_priv *il) |
85 | { | |
86 | int ret; | |
87 | u32 val; | |
88 | ||
89 | /* this bit wakes up the NIC */ | |
90 | _il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); | |
91 | ||
92 | /* | |
93 | * These bits say the device is running, and should keep running for | |
94 | * at least a short while (at least as long as MAC_ACCESS_REQ stays 1), | |
95 | * but they do not indicate that embedded SRAM is restored yet; | |
96 | * 3945 and 4965 have volatile SRAM, and must save/restore contents | |
97 | * to/from host DRAM when sleeping/waking for power-saving. | |
98 | * Each direction takes approximately 1/4 millisecond; with this | |
99 | * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a | |
100 | * series of register accesses are expected (e.g. reading Event Log), | |
101 | * to keep device from sleeping. | |
102 | * | |
103 | * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that | |
104 | * SRAM is okay/restored. We don't check that here because this call | |
105 | * is just for hardware register access; but GP1 MAC_SLEEP check is a | |
106 | * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log). | |
107 | * | |
108 | */ | |
109 | ret = | |
110 | _il_poll_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, | |
111 | (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | | |
112 | CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); | |
b6603036 | 113 | if (unlikely(ret < 0)) { |
17d4eca6 | 114 | val = _il_rd(il, CSR_GP_CNTRL); |
b6603036 SG |
115 | WARN_ONCE(1, "Timeout waiting for ucode processor access " |
116 | "(CSR_GP_CNTRL 0x%08x)\n", val); | |
17d4eca6 | 117 | _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); |
1e0f32a4 | 118 | return false; |
17d4eca6 SG |
119 | } |
120 | ||
1e0f32a4 | 121 | return true; |
17d4eca6 SG |
122 | } |
123 | EXPORT_SYMBOL_GPL(_il_grab_nic_access); | |
124 | ||
125 | int | |
126 | il_poll_bit(struct il_priv *il, u32 addr, u32 mask, int timeout) | |
127 | { | |
128 | const int interval = 10; /* microseconds */ | |
129 | int t = 0; | |
130 | ||
131 | do { | |
132 | if ((il_rd(il, addr) & mask) == mask) | |
133 | return t; | |
134 | udelay(interval); | |
135 | t += interval; | |
136 | } while (t < timeout); | |
137 | ||
138 | return -ETIMEDOUT; | |
139 | } | |
140 | EXPORT_SYMBOL(il_poll_bit); | |
141 | ||
142 | u32 | |
143 | il_rd_prph(struct il_priv *il, u32 reg) | |
144 | { | |
145 | unsigned long reg_flags; | |
146 | u32 val; | |
147 | ||
148 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
149 | _il_grab_nic_access(il); | |
150 | val = _il_rd_prph(il, reg); | |
151 | _il_release_nic_access(il); | |
152 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
153 | return val; | |
154 | } | |
155 | EXPORT_SYMBOL(il_rd_prph); | |
156 | ||
157 | void | |
158 | il_wr_prph(struct il_priv *il, u32 addr, u32 val) | |
159 | { | |
160 | unsigned long reg_flags; | |
161 | ||
162 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
1e0f32a4 | 163 | if (likely(_il_grab_nic_access(il))) { |
17d4eca6 SG |
164 | _il_wr_prph(il, addr, val); |
165 | _il_release_nic_access(il); | |
166 | } | |
167 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
168 | } | |
169 | EXPORT_SYMBOL(il_wr_prph); | |
170 | ||
171 | u32 | |
172 | il_read_targ_mem(struct il_priv *il, u32 addr) | |
173 | { | |
174 | unsigned long reg_flags; | |
175 | u32 value; | |
176 | ||
177 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
178 | _il_grab_nic_access(il); | |
179 | ||
180 | _il_wr(il, HBUS_TARG_MEM_RADDR, addr); | |
17d4eca6 SG |
181 | value = _il_rd(il, HBUS_TARG_MEM_RDAT); |
182 | ||
183 | _il_release_nic_access(il); | |
184 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
185 | return value; | |
186 | } | |
187 | EXPORT_SYMBOL(il_read_targ_mem); | |
188 | ||
189 | void | |
190 | il_write_targ_mem(struct il_priv *il, u32 addr, u32 val) | |
191 | { | |
192 | unsigned long reg_flags; | |
193 | ||
194 | spin_lock_irqsave(&il->reg_lock, reg_flags); | |
1e0f32a4 | 195 | if (likely(_il_grab_nic_access(il))) { |
17d4eca6 | 196 | _il_wr(il, HBUS_TARG_MEM_WADDR, addr); |
17d4eca6 SG |
197 | _il_wr(il, HBUS_TARG_MEM_WDAT, val); |
198 | _il_release_nic_access(il); | |
199 | } | |
200 | spin_unlock_irqrestore(&il->reg_lock, reg_flags); | |
201 | } | |
202 | EXPORT_SYMBOL(il_write_targ_mem); | |
203 | ||
e7392364 SG |
204 | const char * |
205 | il_get_cmd_string(u8 cmd) | |
0cdc2136 SG |
206 | { |
207 | switch (cmd) { | |
208 | IL_CMD(N_ALIVE); | |
209 | IL_CMD(N_ERROR); | |
210 | IL_CMD(C_RXON); | |
211 | IL_CMD(C_RXON_ASSOC); | |
212 | IL_CMD(C_QOS_PARAM); | |
213 | IL_CMD(C_RXON_TIMING); | |
214 | IL_CMD(C_ADD_STA); | |
215 | IL_CMD(C_REM_STA); | |
216 | IL_CMD(C_WEPKEY); | |
217 | IL_CMD(N_3945_RX); | |
218 | IL_CMD(C_TX); | |
219 | IL_CMD(C_RATE_SCALE); | |
220 | IL_CMD(C_LEDS); | |
221 | IL_CMD(C_TX_LINK_QUALITY_CMD); | |
222 | IL_CMD(C_CHANNEL_SWITCH); | |
223 | IL_CMD(N_CHANNEL_SWITCH); | |
224 | IL_CMD(C_SPECTRUM_MEASUREMENT); | |
225 | IL_CMD(N_SPECTRUM_MEASUREMENT); | |
226 | IL_CMD(C_POWER_TBL); | |
227 | IL_CMD(N_PM_SLEEP); | |
228 | IL_CMD(N_PM_DEBUG_STATS); | |
229 | IL_CMD(C_SCAN); | |
230 | IL_CMD(C_SCAN_ABORT); | |
231 | IL_CMD(N_SCAN_START); | |
232 | IL_CMD(N_SCAN_RESULTS); | |
233 | IL_CMD(N_SCAN_COMPLETE); | |
234 | IL_CMD(N_BEACON); | |
235 | IL_CMD(C_TX_BEACON); | |
236 | IL_CMD(C_TX_PWR_TBL); | |
237 | IL_CMD(C_BT_CONFIG); | |
238 | IL_CMD(C_STATS); | |
239 | IL_CMD(N_STATS); | |
240 | IL_CMD(N_CARD_STATE); | |
241 | IL_CMD(N_MISSED_BEACONS); | |
242 | IL_CMD(C_CT_KILL_CONFIG); | |
243 | IL_CMD(C_SENSITIVITY); | |
244 | IL_CMD(C_PHY_CALIBRATION); | |
245 | IL_CMD(N_RX_PHY); | |
246 | IL_CMD(N_RX_MPDU); | |
247 | IL_CMD(N_RX); | |
248 | IL_CMD(N_COMPRESSED_BA); | |
249 | default: | |
250 | return "UNKNOWN"; | |
251 | ||
252 | } | |
253 | } | |
254 | EXPORT_SYMBOL(il_get_cmd_string); | |
255 | ||
256 | #define HOST_COMPLETE_TIMEOUT (HZ / 2) | |
257 | ||
e7392364 SG |
258 | static void |
259 | il_generic_cmd_callback(struct il_priv *il, struct il_device_cmd *cmd, | |
260 | struct il_rx_pkt *pkt) | |
0cdc2136 SG |
261 | { |
262 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { | |
263 | IL_ERR("Bad return from %s (0x%08X)\n", | |
e7392364 | 264 | il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
0cdc2136 SG |
265 | return; |
266 | } | |
0cdc2136 SG |
267 | #ifdef CONFIG_IWLEGACY_DEBUG |
268 | switch (cmd->hdr.cmd) { | |
269 | case C_TX_LINK_QUALITY_CMD: | |
270 | case C_SENSITIVITY: | |
271 | D_HC_DUMP("back from %s (0x%08X)\n", | |
e7392364 | 272 | il_get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
0cdc2136 SG |
273 | break; |
274 | default: | |
e7392364 SG |
275 | D_HC("back from %s (0x%08X)\n", il_get_cmd_string(cmd->hdr.cmd), |
276 | pkt->hdr.flags); | |
0cdc2136 SG |
277 | } |
278 | #endif | |
279 | } | |
280 | ||
281 | static int | |
282 | il_send_cmd_async(struct il_priv *il, struct il_host_cmd *cmd) | |
283 | { | |
284 | int ret; | |
285 | ||
286 | BUG_ON(!(cmd->flags & CMD_ASYNC)); | |
287 | ||
288 | /* An asynchronous command can not expect an SKB to be set. */ | |
289 | BUG_ON(cmd->flags & CMD_WANT_SKB); | |
290 | ||
291 | /* Assign a generic callback if one is not provided */ | |
292 | if (!cmd->callback) | |
293 | cmd->callback = il_generic_cmd_callback; | |
294 | ||
295 | if (test_bit(S_EXIT_PENDING, &il->status)) | |
296 | return -EBUSY; | |
297 | ||
298 | ret = il_enqueue_hcmd(il, cmd); | |
299 | if (ret < 0) { | |
300 | IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", | |
e7392364 | 301 | il_get_cmd_string(cmd->id), ret); |
0cdc2136 SG |
302 | return ret; |
303 | } | |
304 | return 0; | |
305 | } | |
306 | ||
e7392364 SG |
307 | int |
308 | il_send_cmd_sync(struct il_priv *il, struct il_host_cmd *cmd) | |
0cdc2136 SG |
309 | { |
310 | int cmd_idx; | |
311 | int ret; | |
312 | ||
313 | lockdep_assert_held(&il->mutex); | |
314 | ||
315 | BUG_ON(cmd->flags & CMD_ASYNC); | |
316 | ||
e7392364 | 317 | /* A synchronous command can not have a callback set. */ |
0cdc2136 SG |
318 | BUG_ON(cmd->callback); |
319 | ||
320 | D_INFO("Attempting to send sync command %s\n", | |
e7392364 | 321 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
322 | |
323 | set_bit(S_HCMD_ACTIVE, &il->status); | |
324 | D_INFO("Setting HCMD_ACTIVE for command %s\n", | |
e7392364 | 325 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
326 | |
327 | cmd_idx = il_enqueue_hcmd(il, cmd); | |
328 | if (cmd_idx < 0) { | |
329 | ret = cmd_idx; | |
330 | IL_ERR("Error sending %s: enqueue_hcmd failed: %d\n", | |
e7392364 | 331 | il_get_cmd_string(cmd->id), ret); |
0cdc2136 SG |
332 | goto out; |
333 | } | |
334 | ||
335 | ret = wait_event_timeout(il->wait_command_queue, | |
e7392364 SG |
336 | !test_bit(S_HCMD_ACTIVE, &il->status), |
337 | HOST_COMPLETE_TIMEOUT); | |
0cdc2136 SG |
338 | if (!ret) { |
339 | if (test_bit(S_HCMD_ACTIVE, &il->status)) { | |
e7392364 SG |
340 | IL_ERR("Error sending %s: time out after %dms.\n", |
341 | il_get_cmd_string(cmd->id), | |
342 | jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); | |
0cdc2136 SG |
343 | |
344 | clear_bit(S_HCMD_ACTIVE, &il->status); | |
e7392364 SG |
345 | D_INFO("Clearing HCMD_ACTIVE for command %s\n", |
346 | il_get_cmd_string(cmd->id)); | |
0cdc2136 SG |
347 | ret = -ETIMEDOUT; |
348 | goto cancel; | |
349 | } | |
350 | } | |
351 | ||
bc269a8e | 352 | if (test_bit(S_RFKILL, &il->status)) { |
0cdc2136 | 353 | IL_ERR("Command %s aborted: RF KILL Switch\n", |
e7392364 | 354 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
355 | ret = -ECANCELED; |
356 | goto fail; | |
357 | } | |
358 | if (test_bit(S_FW_ERROR, &il->status)) { | |
359 | IL_ERR("Command %s failed: FW Error\n", | |
e7392364 | 360 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
361 | ret = -EIO; |
362 | goto fail; | |
363 | } | |
364 | if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) { | |
365 | IL_ERR("Error: Response NULL in '%s'\n", | |
e7392364 | 366 | il_get_cmd_string(cmd->id)); |
0cdc2136 SG |
367 | ret = -EIO; |
368 | goto cancel; | |
369 | } | |
370 | ||
371 | ret = 0; | |
372 | goto out; | |
373 | ||
374 | cancel: | |
375 | if (cmd->flags & CMD_WANT_SKB) { | |
376 | /* | |
377 | * Cancel the CMD_WANT_SKB flag for the cmd in the | |
378 | * TX cmd queue. Otherwise in case the cmd comes | |
379 | * in later, it will possibly set an invalid | |
380 | * address (cmd->meta.source). | |
381 | */ | |
e7392364 | 382 | il->txq[il->cmd_queue].meta[cmd_idx].flags &= ~CMD_WANT_SKB; |
0cdc2136 SG |
383 | } |
384 | fail: | |
385 | if (cmd->reply_page) { | |
386 | il_free_pages(il, cmd->reply_page); | |
387 | cmd->reply_page = 0; | |
388 | } | |
389 | out: | |
390 | return ret; | |
391 | } | |
392 | EXPORT_SYMBOL(il_send_cmd_sync); | |
393 | ||
e7392364 SG |
394 | int |
395 | il_send_cmd(struct il_priv *il, struct il_host_cmd *cmd) | |
0cdc2136 SG |
396 | { |
397 | if (cmd->flags & CMD_ASYNC) | |
398 | return il_send_cmd_async(il, cmd); | |
399 | ||
400 | return il_send_cmd_sync(il, cmd); | |
401 | } | |
402 | EXPORT_SYMBOL(il_send_cmd); | |
403 | ||
404 | int | |
405 | il_send_cmd_pdu(struct il_priv *il, u8 id, u16 len, const void *data) | |
406 | { | |
407 | struct il_host_cmd cmd = { | |
408 | .id = id, | |
409 | .len = len, | |
410 | .data = data, | |
411 | }; | |
412 | ||
413 | return il_send_cmd_sync(il, &cmd); | |
414 | } | |
415 | EXPORT_SYMBOL(il_send_cmd_pdu); | |
416 | ||
e7392364 SG |
417 | int |
418 | il_send_cmd_pdu_async(struct il_priv *il, u8 id, u16 len, const void *data, | |
1722f8e1 SG |
419 | void (*callback) (struct il_priv *il, |
420 | struct il_device_cmd *cmd, | |
421 | struct il_rx_pkt *pkt)) | |
0cdc2136 SG |
422 | { |
423 | struct il_host_cmd cmd = { | |
424 | .id = id, | |
425 | .len = len, | |
426 | .data = data, | |
427 | }; | |
428 | ||
429 | cmd.flags |= CMD_ASYNC; | |
430 | cmd.callback = callback; | |
431 | ||
432 | return il_send_cmd_async(il, &cmd); | |
433 | } | |
434 | EXPORT_SYMBOL(il_send_cmd_pdu_async); | |
435 | ||
436 | /* default: IL_LED_BLINK(0) using blinking idx table */ | |
437 | static int led_mode; | |
438 | module_param(led_mode, int, S_IRUGO); | |
e7392364 SG |
439 | MODULE_PARM_DESC(led_mode, |
440 | "0=system default, " "1=On(RF On)/Off(RF Off), 2=blinking"); | |
0cdc2136 SG |
441 | |
442 | /* Throughput OFF time(ms) ON time (ms) | |
443 | * >300 25 25 | |
444 | * >200 to 300 40 40 | |
445 | * >100 to 200 55 55 | |
446 | * >70 to 100 65 65 | |
447 | * >50 to 70 75 75 | |
448 | * >20 to 50 85 85 | |
449 | * >10 to 20 95 95 | |
450 | * >5 to 10 110 110 | |
451 | * >1 to 5 130 130 | |
452 | * >0 to 1 167 167 | |
453 | * <=0 SOLID ON | |
454 | */ | |
455 | static const struct ieee80211_tpt_blink il_blink[] = { | |
1722f8e1 SG |
456 | {.throughput = 0, .blink_time = 334}, |
457 | {.throughput = 1 * 1024 - 1, .blink_time = 260}, | |
458 | {.throughput = 5 * 1024 - 1, .blink_time = 220}, | |
459 | {.throughput = 10 * 1024 - 1, .blink_time = 190}, | |
460 | {.throughput = 20 * 1024 - 1, .blink_time = 170}, | |
461 | {.throughput = 50 * 1024 - 1, .blink_time = 150}, | |
462 | {.throughput = 70 * 1024 - 1, .blink_time = 130}, | |
463 | {.throughput = 100 * 1024 - 1, .blink_time = 110}, | |
464 | {.throughput = 200 * 1024 - 1, .blink_time = 80}, | |
465 | {.throughput = 300 * 1024 - 1, .blink_time = 50}, | |
0cdc2136 SG |
466 | }; |
467 | ||
468 | /* | |
469 | * Adjust led blink rate to compensate on a MAC Clock difference on every HW | |
470 | * Led blink rate analysis showed an average deviation of 0% on 3945, | |
471 | * 5% on 4965 HW. | |
472 | * Need to compensate on the led on/off time per HW according to the deviation | |
473 | * to achieve the desired led frequency | |
474 | * The calculation is: (100-averageDeviation)/100 * blinkTime | |
475 | * For code efficiency the calculation will be: | |
476 | * compensation = (100 - averageDeviation) * 64 / 100 | |
477 | * NewBlinkTime = (compensation * BlinkTime) / 64 | |
478 | */ | |
e7392364 SG |
479 | static inline u8 |
480 | il_blink_compensation(struct il_priv *il, u8 time, u16 compensation) | |
0cdc2136 SG |
481 | { |
482 | if (!compensation) { | |
483 | IL_ERR("undefined blink compensation: " | |
e7392364 | 484 | "use pre-defined blinking time\n"); |
0cdc2136 SG |
485 | return time; |
486 | } | |
487 | ||
e7392364 | 488 | return (u8) ((time * compensation) >> 6); |
0cdc2136 SG |
489 | } |
490 | ||
491 | /* Set led pattern command */ | |
e7392364 SG |
492 | static int |
493 | il_led_cmd(struct il_priv *il, unsigned long on, unsigned long off) | |
0cdc2136 SG |
494 | { |
495 | struct il_led_cmd led_cmd = { | |
496 | .id = IL_LED_LINK, | |
497 | .interval = IL_DEF_LED_INTRVL | |
498 | }; | |
499 | int ret; | |
500 | ||
501 | if (!test_bit(S_READY, &il->status)) | |
502 | return -EBUSY; | |
503 | ||
504 | if (il->blink_on == on && il->blink_off == off) | |
505 | return 0; | |
506 | ||
507 | if (off == 0) { | |
508 | /* led is SOLID_ON */ | |
509 | on = IL_LED_SOLID; | |
510 | } | |
511 | ||
512 | D_LED("Led blink time compensation=%u\n", | |
89ef1ed2 | 513 | il->cfg->led_compensation); |
e7392364 SG |
514 | led_cmd.on = |
515 | il_blink_compensation(il, on, | |
89ef1ed2 | 516 | il->cfg->led_compensation); |
e7392364 SG |
517 | led_cmd.off = |
518 | il_blink_compensation(il, off, | |
89ef1ed2 | 519 | il->cfg->led_compensation); |
0cdc2136 | 520 | |
c9363551 | 521 | ret = il->ops->send_led_cmd(il, &led_cmd); |
0cdc2136 SG |
522 | if (!ret) { |
523 | il->blink_on = on; | |
524 | il->blink_off = off; | |
525 | } | |
526 | return ret; | |
527 | } | |
528 | ||
e7392364 SG |
529 | static void |
530 | il_led_brightness_set(struct led_classdev *led_cdev, | |
531 | enum led_brightness brightness) | |
0cdc2136 SG |
532 | { |
533 | struct il_priv *il = container_of(led_cdev, struct il_priv, led); | |
534 | unsigned long on = 0; | |
535 | ||
536 | if (brightness > 0) | |
537 | on = IL_LED_SOLID; | |
538 | ||
539 | il_led_cmd(il, on, 0); | |
540 | } | |
541 | ||
e7392364 SG |
542 | static int |
543 | il_led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, | |
544 | unsigned long *delay_off) | |
0cdc2136 SG |
545 | { |
546 | struct il_priv *il = container_of(led_cdev, struct il_priv, led); | |
547 | ||
548 | return il_led_cmd(il, *delay_on, *delay_off); | |
549 | } | |
550 | ||
e7392364 SG |
551 | void |
552 | il_leds_init(struct il_priv *il) | |
0cdc2136 SG |
553 | { |
554 | int mode = led_mode; | |
555 | int ret; | |
556 | ||
557 | if (mode == IL_LED_DEFAULT) | |
558 | mode = il->cfg->led_mode; | |
559 | ||
e7392364 SG |
560 | il->led.name = |
561 | kasprintf(GFP_KERNEL, "%s-led", wiphy_name(il->hw->wiphy)); | |
0cdc2136 SG |
562 | il->led.brightness_set = il_led_brightness_set; |
563 | il->led.blink_set = il_led_blink_set; | |
564 | il->led.max_brightness = 1; | |
565 | ||
566 | switch (mode) { | |
567 | case IL_LED_DEFAULT: | |
568 | WARN_ON(1); | |
569 | break; | |
570 | case IL_LED_BLINK: | |
571 | il->led.default_trigger = | |
e7392364 SG |
572 | ieee80211_create_tpt_led_trigger(il->hw, |
573 | IEEE80211_TPT_LEDTRIG_FL_CONNECTED, | |
574 | il_blink, | |
575 | ARRAY_SIZE(il_blink)); | |
0cdc2136 SG |
576 | break; |
577 | case IL_LED_RF_STATE: | |
e7392364 | 578 | il->led.default_trigger = ieee80211_get_radio_led_name(il->hw); |
0cdc2136 SG |
579 | break; |
580 | } | |
581 | ||
582 | ret = led_classdev_register(&il->pci_dev->dev, &il->led); | |
583 | if (ret) { | |
584 | kfree(il->led.name); | |
585 | return; | |
586 | } | |
587 | ||
588 | il->led_registered = true; | |
589 | } | |
590 | EXPORT_SYMBOL(il_leds_init); | |
591 | ||
e7392364 SG |
592 | void |
593 | il_leds_exit(struct il_priv *il) | |
0cdc2136 SG |
594 | { |
595 | if (!il->led_registered) | |
596 | return; | |
597 | ||
598 | led_classdev_unregister(&il->led); | |
599 | kfree(il->led.name); | |
600 | } | |
601 | EXPORT_SYMBOL(il_leds_exit); | |
602 | ||
603 | /************************** EEPROM BANDS **************************** | |
604 | * | |
605 | * The il_eeprom_band definitions below provide the mapping from the | |
606 | * EEPROM contents to the specific channel number supported for each | |
607 | * band. | |
608 | * | |
609 | * For example, il_priv->eeprom.band_3_channels[4] from the band_3 | |
610 | * definition below maps to physical channel 42 in the 5.2GHz spectrum. | |
611 | * The specific geography and calibration information for that channel | |
612 | * is contained in the eeprom map itself. | |
613 | * | |
614 | * During init, we copy the eeprom information and channel map | |
615 | * information into il->channel_info_24/52 and il->channel_map_24/52 | |
616 | * | |
617 | * channel_map_24/52 provides the idx in the channel_info array for a | |
618 | * given channel. We have to have two separate maps as there is channel | |
619 | * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and | |
620 | * band_2 | |
621 | * | |
622 | * A value of 0xff stored in the channel_map indicates that the channel | |
623 | * is not supported by the hardware at all. | |
624 | * | |
625 | * A value of 0xfe in the channel_map indicates that the channel is not | |
626 | * valid for Tx with the current hardware. This means that | |
627 | * while the system can tune and receive on a given channel, it may not | |
628 | * be able to associate or transmit any frames on that | |
629 | * channel. There is no corresponding channel information for that | |
630 | * entry. | |
631 | * | |
632 | *********************************************************************/ | |
633 | ||
634 | /* 2.4 GHz */ | |
635 | const u8 il_eeprom_band_1[14] = { | |
636 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 | |
637 | }; | |
638 | ||
639 | /* 5.2 GHz bands */ | |
640 | static const u8 il_eeprom_band_2[] = { /* 4915-5080MHz */ | |
641 | 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 | |
642 | }; | |
643 | ||
644 | static const u8 il_eeprom_band_3[] = { /* 5170-5320MHz */ | |
645 | 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 | |
646 | }; | |
647 | ||
648 | static const u8 il_eeprom_band_4[] = { /* 5500-5700MHz */ | |
649 | 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 | |
650 | }; | |
651 | ||
652 | static const u8 il_eeprom_band_5[] = { /* 5725-5825MHz */ | |
653 | 145, 149, 153, 157, 161, 165 | |
654 | }; | |
655 | ||
e7392364 | 656 | static const u8 il_eeprom_band_6[] = { /* 2.4 ht40 channel */ |
0cdc2136 SG |
657 | 1, 2, 3, 4, 5, 6, 7 |
658 | }; | |
659 | ||
e7392364 | 660 | static const u8 il_eeprom_band_7[] = { /* 5.2 ht40 channel */ |
0cdc2136 SG |
661 | 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 |
662 | }; | |
663 | ||
664 | /****************************************************************************** | |
665 | * | |
666 | * EEPROM related functions | |
667 | * | |
668 | ******************************************************************************/ | |
669 | ||
e7392364 SG |
670 | static int |
671 | il_eeprom_verify_signature(struct il_priv *il) | |
0cdc2136 SG |
672 | { |
673 | u32 gp = _il_rd(il, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK; | |
674 | int ret = 0; | |
675 | ||
676 | D_EEPROM("EEPROM signature=0x%08x\n", gp); | |
677 | switch (gp) { | |
678 | case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K: | |
679 | case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K: | |
680 | break; | |
681 | default: | |
e7392364 | 682 | IL_ERR("bad EEPROM signature," "EEPROM_GP=0x%08x\n", gp); |
0cdc2136 SG |
683 | ret = -ENOENT; |
684 | break; | |
685 | } | |
686 | return ret; | |
687 | } | |
688 | ||
e7392364 SG |
689 | const u8 * |
690 | il_eeprom_query_addr(const struct il_priv *il, size_t offset) | |
0cdc2136 | 691 | { |
89ef1ed2 | 692 | BUG_ON(offset >= il->cfg->eeprom_size); |
0cdc2136 SG |
693 | return &il->eeprom[offset]; |
694 | } | |
695 | EXPORT_SYMBOL(il_eeprom_query_addr); | |
696 | ||
e7392364 | 697 | u16 |
1722f8e1 | 698 | il_eeprom_query16(const struct il_priv *il, size_t offset) |
0cdc2136 SG |
699 | { |
700 | if (!il->eeprom) | |
701 | return 0; | |
e7392364 | 702 | return (u16) il->eeprom[offset] | ((u16) il->eeprom[offset + 1] << 8); |
0cdc2136 SG |
703 | } |
704 | EXPORT_SYMBOL(il_eeprom_query16); | |
705 | ||
706 | /** | |
707 | * il_eeprom_init - read EEPROM contents | |
708 | * | |
709 | * Load the EEPROM contents from adapter into il->eeprom | |
710 | * | |
711 | * NOTE: This routine uses the non-debug IO access functions. | |
712 | */ | |
e7392364 SG |
713 | int |
714 | il_eeprom_init(struct il_priv *il) | |
0cdc2136 SG |
715 | { |
716 | __le16 *e; | |
717 | u32 gp = _il_rd(il, CSR_EEPROM_GP); | |
718 | int sz; | |
719 | int ret; | |
720 | u16 addr; | |
721 | ||
722 | /* allocate eeprom */ | |
89ef1ed2 | 723 | sz = il->cfg->eeprom_size; |
0cdc2136 SG |
724 | D_EEPROM("NVM size = %d\n", sz); |
725 | il->eeprom = kzalloc(sz, GFP_KERNEL); | |
726 | if (!il->eeprom) { | |
727 | ret = -ENOMEM; | |
728 | goto alloc_err; | |
729 | } | |
e7392364 | 730 | e = (__le16 *) il->eeprom; |
0cdc2136 | 731 | |
1600b875 | 732 | il->ops->apm_init(il); |
0cdc2136 SG |
733 | |
734 | ret = il_eeprom_verify_signature(il); | |
735 | if (ret < 0) { | |
736 | IL_ERR("EEPROM not found, EEPROM_GP=0x%08x\n", gp); | |
737 | ret = -ENOENT; | |
738 | goto err; | |
739 | } | |
740 | ||
741 | /* Make sure driver (instead of uCode) is allowed to read EEPROM */ | |
1600b875 | 742 | ret = il->ops->eeprom_acquire_semaphore(il); |
0cdc2136 SG |
743 | if (ret < 0) { |
744 | IL_ERR("Failed to acquire EEPROM semaphore.\n"); | |
745 | ret = -ENOENT; | |
746 | goto err; | |
747 | } | |
748 | ||
749 | /* eeprom is an array of 16bit values */ | |
750 | for (addr = 0; addr < sz; addr += sizeof(u16)) { | |
751 | u32 r; | |
752 | ||
753 | _il_wr(il, CSR_EEPROM_REG, | |
e7392364 | 754 | CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); |
0cdc2136 | 755 | |
e7392364 SG |
756 | ret = |
757 | _il_poll_bit(il, CSR_EEPROM_REG, | |
758 | CSR_EEPROM_REG_READ_VALID_MSK, | |
759 | CSR_EEPROM_REG_READ_VALID_MSK, | |
760 | IL_EEPROM_ACCESS_TIMEOUT); | |
0cdc2136 | 761 | if (ret < 0) { |
e7392364 | 762 | IL_ERR("Time out reading EEPROM[%d]\n", addr); |
0cdc2136 SG |
763 | goto done; |
764 | } | |
765 | r = _il_rd(il, CSR_EEPROM_REG); | |
766 | e[addr / 2] = cpu_to_le16(r >> 16); | |
767 | } | |
768 | ||
e7392364 SG |
769 | D_EEPROM("NVM Type: %s, version: 0x%x\n", "EEPROM", |
770 | il_eeprom_query16(il, EEPROM_VERSION)); | |
0cdc2136 SG |
771 | |
772 | ret = 0; | |
773 | done: | |
1600b875 | 774 | il->ops->eeprom_release_semaphore(il); |
0cdc2136 SG |
775 | |
776 | err: | |
777 | if (ret) | |
778 | il_eeprom_free(il); | |
779 | /* Reset chip to save power until we load uCode during "up". */ | |
780 | il_apm_stop(il); | |
781 | alloc_err: | |
782 | return ret; | |
783 | } | |
784 | EXPORT_SYMBOL(il_eeprom_init); | |
785 | ||
e7392364 SG |
786 | void |
787 | il_eeprom_free(struct il_priv *il) | |
0cdc2136 SG |
788 | { |
789 | kfree(il->eeprom); | |
790 | il->eeprom = NULL; | |
791 | } | |
792 | EXPORT_SYMBOL(il_eeprom_free); | |
793 | ||
e7392364 SG |
794 | static void |
795 | il_init_band_reference(const struct il_priv *il, int eep_band, | |
796 | int *eeprom_ch_count, | |
797 | const struct il_eeprom_channel **eeprom_ch_info, | |
1722f8e1 | 798 | const u8 **eeprom_ch_idx) |
0cdc2136 | 799 | { |
93a984a4 SG |
800 | u32 offset = il->cfg->regulatory_bands[eep_band - 1]; |
801 | ||
0cdc2136 SG |
802 | switch (eep_band) { |
803 | case 1: /* 2.4GHz band */ | |
804 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_1); | |
e7392364 SG |
805 | *eeprom_ch_info = |
806 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
807 | offset); | |
0cdc2136 SG |
808 | *eeprom_ch_idx = il_eeprom_band_1; |
809 | break; | |
810 | case 2: /* 4.9GHz band */ | |
811 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_2); | |
e7392364 SG |
812 | *eeprom_ch_info = |
813 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
814 | offset); | |
0cdc2136 SG |
815 | *eeprom_ch_idx = il_eeprom_band_2; |
816 | break; | |
817 | case 3: /* 5.2GHz band */ | |
818 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_3); | |
e7392364 SG |
819 | *eeprom_ch_info = |
820 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
821 | offset); | |
0cdc2136 SG |
822 | *eeprom_ch_idx = il_eeprom_band_3; |
823 | break; | |
824 | case 4: /* 5.5GHz band */ | |
825 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_4); | |
e7392364 SG |
826 | *eeprom_ch_info = |
827 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
828 | offset); | |
0cdc2136 SG |
829 | *eeprom_ch_idx = il_eeprom_band_4; |
830 | break; | |
831 | case 5: /* 5.7GHz band */ | |
832 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_5); | |
e7392364 SG |
833 | *eeprom_ch_info = |
834 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
835 | offset); | |
0cdc2136 SG |
836 | *eeprom_ch_idx = il_eeprom_band_5; |
837 | break; | |
838 | case 6: /* 2.4GHz ht40 channels */ | |
839 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_6); | |
e7392364 SG |
840 | *eeprom_ch_info = |
841 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
842 | offset); | |
0cdc2136 SG |
843 | *eeprom_ch_idx = il_eeprom_band_6; |
844 | break; | |
845 | case 7: /* 5 GHz ht40 channels */ | |
846 | *eeprom_ch_count = ARRAY_SIZE(il_eeprom_band_7); | |
e7392364 SG |
847 | *eeprom_ch_info = |
848 | (struct il_eeprom_channel *)il_eeprom_query_addr(il, | |
849 | offset); | |
0cdc2136 SG |
850 | *eeprom_ch_idx = il_eeprom_band_7; |
851 | break; | |
852 | default: | |
853 | BUG(); | |
854 | } | |
855 | } | |
856 | ||
857 | #define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \ | |
858 | ? # x " " : "") | |
859 | /** | |
860 | * il_mod_ht40_chan_info - Copy ht40 channel info into driver's il. | |
861 | * | |
862 | * Does not set up a command, or touch hardware. | |
863 | */ | |
e7392364 SG |
864 | static int |
865 | il_mod_ht40_chan_info(struct il_priv *il, enum ieee80211_band band, u16 channel, | |
866 | const struct il_eeprom_channel *eeprom_ch, | |
867 | u8 clear_ht40_extension_channel) | |
0cdc2136 SG |
868 | { |
869 | struct il_channel_info *ch_info; | |
870 | ||
e7392364 SG |
871 | ch_info = |
872 | (struct il_channel_info *)il_get_channel_info(il, band, channel); | |
0cdc2136 SG |
873 | |
874 | if (!il_is_channel_valid(ch_info)) | |
875 | return -1; | |
876 | ||
877 | D_EEPROM("HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):" | |
e7392364 SG |
878 | " Ad-Hoc %ssupported\n", ch_info->channel, |
879 | il_is_channel_a_band(ch_info) ? "5.2" : "2.4", | |
880 | CHECK_AND_PRINT(IBSS), CHECK_AND_PRINT(ACTIVE), | |
881 | CHECK_AND_PRINT(RADAR), CHECK_AND_PRINT(WIDE), | |
882 | CHECK_AND_PRINT(DFS), eeprom_ch->flags, | |
883 | eeprom_ch->max_power_avg, | |
884 | ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) && | |
885 | !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" : "not "); | |
0cdc2136 SG |
886 | |
887 | ch_info->ht40_eeprom = *eeprom_ch; | |
888 | ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg; | |
889 | ch_info->ht40_flags = eeprom_ch->flags; | |
890 | if (eeprom_ch->flags & EEPROM_CHANNEL_VALID) | |
891 | ch_info->ht40_extension_channel &= | |
e7392364 | 892 | ~clear_ht40_extension_channel; |
0cdc2136 SG |
893 | |
894 | return 0; | |
895 | } | |
896 | ||
897 | #define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ | |
898 | ? # x " " : "") | |
899 | ||
900 | /** | |
901 | * il_init_channel_map - Set up driver's info for all possible channels | |
902 | */ | |
e7392364 SG |
903 | int |
904 | il_init_channel_map(struct il_priv *il) | |
0cdc2136 SG |
905 | { |
906 | int eeprom_ch_count = 0; | |
907 | const u8 *eeprom_ch_idx = NULL; | |
908 | const struct il_eeprom_channel *eeprom_ch_info = NULL; | |
909 | int band, ch; | |
910 | struct il_channel_info *ch_info; | |
911 | ||
912 | if (il->channel_count) { | |
913 | D_EEPROM("Channel map already initialized.\n"); | |
914 | return 0; | |
915 | } | |
916 | ||
917 | D_EEPROM("Initializing regulatory info from EEPROM\n"); | |
918 | ||
919 | il->channel_count = | |
e7392364 SG |
920 | ARRAY_SIZE(il_eeprom_band_1) + ARRAY_SIZE(il_eeprom_band_2) + |
921 | ARRAY_SIZE(il_eeprom_band_3) + ARRAY_SIZE(il_eeprom_band_4) + | |
0cdc2136 SG |
922 | ARRAY_SIZE(il_eeprom_band_5); |
923 | ||
e7392364 | 924 | D_EEPROM("Parsing data for %d channels.\n", il->channel_count); |
0cdc2136 | 925 | |
e7392364 SG |
926 | il->channel_info = |
927 | kzalloc(sizeof(struct il_channel_info) * il->channel_count, | |
928 | GFP_KERNEL); | |
0cdc2136 SG |
929 | if (!il->channel_info) { |
930 | IL_ERR("Could not allocate channel_info\n"); | |
931 | il->channel_count = 0; | |
932 | return -ENOMEM; | |
933 | } | |
934 | ||
935 | ch_info = il->channel_info; | |
936 | ||
937 | /* Loop through the 5 EEPROM bands adding them in order to the | |
938 | * channel map we maintain (that contains additional information than | |
939 | * what just in the EEPROM) */ | |
940 | for (band = 1; band <= 5; band++) { | |
941 | ||
942 | il_init_band_reference(il, band, &eeprom_ch_count, | |
e7392364 | 943 | &eeprom_ch_info, &eeprom_ch_idx); |
0cdc2136 SG |
944 | |
945 | /* Loop through each band adding each of the channels */ | |
946 | for (ch = 0; ch < eeprom_ch_count; ch++) { | |
947 | ch_info->channel = eeprom_ch_idx[ch]; | |
e7392364 SG |
948 | ch_info->band = |
949 | (band == | |
950 | 1) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
0cdc2136 SG |
951 | |
952 | /* permanently store EEPROM's channel regulatory flags | |
953 | * and max power in channel info database. */ | |
954 | ch_info->eeprom = eeprom_ch_info[ch]; | |
955 | ||
956 | /* Copy the run-time flags so they are there even on | |
957 | * invalid channels */ | |
958 | ch_info->flags = eeprom_ch_info[ch].flags; | |
959 | /* First write that ht40 is not enabled, and then enable | |
960 | * one by one */ | |
961 | ch_info->ht40_extension_channel = | |
e7392364 | 962 | IEEE80211_CHAN_NO_HT40; |
0cdc2136 SG |
963 | |
964 | if (!(il_is_channel_valid(ch_info))) { | |
e7392364 SG |
965 | D_EEPROM("Ch. %d Flags %x [%sGHz] - " |
966 | "No traffic\n", ch_info->channel, | |
967 | ch_info->flags, | |
968 | il_is_channel_a_band(ch_info) ? "5.2" : | |
969 | "2.4"); | |
0cdc2136 SG |
970 | ch_info++; |
971 | continue; | |
972 | } | |
973 | ||
974 | /* Initialize regulatory-based run-time data */ | |
975 | ch_info->max_power_avg = ch_info->curr_txpow = | |
976 | eeprom_ch_info[ch].max_power_avg; | |
977 | ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; | |
978 | ch_info->min_power = 0; | |
979 | ||
e7392364 SG |
980 | D_EEPROM("Ch. %d [%sGHz] " "%s%s%s%s%s%s(0x%02x %ddBm):" |
981 | " Ad-Hoc %ssupported\n", ch_info->channel, | |
982 | il_is_channel_a_band(ch_info) ? "5.2" : "2.4", | |
983 | CHECK_AND_PRINT_I(VALID), | |
984 | CHECK_AND_PRINT_I(IBSS), | |
985 | CHECK_AND_PRINT_I(ACTIVE), | |
986 | CHECK_AND_PRINT_I(RADAR), | |
987 | CHECK_AND_PRINT_I(WIDE), | |
988 | CHECK_AND_PRINT_I(DFS), | |
989 | eeprom_ch_info[ch].flags, | |
990 | eeprom_ch_info[ch].max_power_avg, | |
991 | ((eeprom_ch_info[ch]. | |
992 | flags & EEPROM_CHANNEL_IBSS) && | |
993 | !(eeprom_ch_info[ch]. | |
994 | flags & EEPROM_CHANNEL_RADAR)) ? "" : | |
995 | "not "); | |
0cdc2136 SG |
996 | |
997 | ch_info++; | |
998 | } | |
999 | } | |
1000 | ||
1001 | /* Check if we do have HT40 channels */ | |
93a984a4 SG |
1002 | if (il->cfg->regulatory_bands[5] == EEPROM_REGULATORY_BAND_NO_HT40 && |
1003 | il->cfg->regulatory_bands[6] == EEPROM_REGULATORY_BAND_NO_HT40) | |
0cdc2136 SG |
1004 | return 0; |
1005 | ||
1006 | /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */ | |
1007 | for (band = 6; band <= 7; band++) { | |
1008 | enum ieee80211_band ieeeband; | |
1009 | ||
1010 | il_init_band_reference(il, band, &eeprom_ch_count, | |
e7392364 | 1011 | &eeprom_ch_info, &eeprom_ch_idx); |
0cdc2136 SG |
1012 | |
1013 | /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ | |
1014 | ieeeband = | |
e7392364 | 1015 | (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; |
0cdc2136 SG |
1016 | |
1017 | /* Loop through each band adding each of the channels */ | |
1018 | for (ch = 0; ch < eeprom_ch_count; ch++) { | |
1019 | /* Set up driver's info for lower half */ | |
e7392364 SG |
1020 | il_mod_ht40_chan_info(il, ieeeband, eeprom_ch_idx[ch], |
1021 | &eeprom_ch_info[ch], | |
1022 | IEEE80211_CHAN_NO_HT40PLUS); | |
0cdc2136 SG |
1023 | |
1024 | /* Set up driver's info for upper half */ | |
1025 | il_mod_ht40_chan_info(il, ieeeband, | |
e7392364 SG |
1026 | eeprom_ch_idx[ch] + 4, |
1027 | &eeprom_ch_info[ch], | |
1028 | IEEE80211_CHAN_NO_HT40MINUS); | |
0cdc2136 SG |
1029 | } |
1030 | } | |
1031 | ||
1032 | return 0; | |
1033 | } | |
1034 | EXPORT_SYMBOL(il_init_channel_map); | |
1035 | ||
1036 | /* | |
1037 | * il_free_channel_map - undo allocations in il_init_channel_map | |
1038 | */ | |
e7392364 SG |
1039 | void |
1040 | il_free_channel_map(struct il_priv *il) | |
0cdc2136 SG |
1041 | { |
1042 | kfree(il->channel_info); | |
1043 | il->channel_count = 0; | |
1044 | } | |
1045 | EXPORT_SYMBOL(il_free_channel_map); | |
1046 | ||
1047 | /** | |
1048 | * il_get_channel_info - Find driver's ilate channel info | |
1049 | * | |
1050 | * Based on band and channel number. | |
1051 | */ | |
e7392364 SG |
1052 | const struct il_channel_info * |
1053 | il_get_channel_info(const struct il_priv *il, enum ieee80211_band band, | |
1054 | u16 channel) | |
0cdc2136 SG |
1055 | { |
1056 | int i; | |
1057 | ||
1058 | switch (band) { | |
1059 | case IEEE80211_BAND_5GHZ: | |
1060 | for (i = 14; i < il->channel_count; i++) { | |
1061 | if (il->channel_info[i].channel == channel) | |
1062 | return &il->channel_info[i]; | |
1063 | } | |
1064 | break; | |
1065 | case IEEE80211_BAND_2GHZ: | |
1066 | if (channel >= 1 && channel <= 14) | |
1067 | return &il->channel_info[channel - 1]; | |
1068 | break; | |
1069 | default: | |
1070 | BUG(); | |
1071 | } | |
1072 | ||
1073 | return NULL; | |
1074 | } | |
1075 | EXPORT_SYMBOL(il_get_channel_info); | |
1076 | ||
1077 | /* | |
1078 | * Setting power level allows the card to go to sleep when not busy. | |
1079 | * | |
1080 | * We calculate a sleep command based on the required latency, which | |
dbdac2b5 | 1081 | * we get from mac80211. |
0cdc2136 SG |
1082 | */ |
1083 | ||
dbdac2b5 SG |
1084 | #define SLP_VEC(X0, X1, X2, X3, X4) { \ |
1085 | cpu_to_le32(X0), \ | |
1086 | cpu_to_le32(X1), \ | |
1087 | cpu_to_le32(X2), \ | |
1088 | cpu_to_le32(X3), \ | |
1089 | cpu_to_le32(X4) \ | |
1090 | } | |
0cdc2136 | 1091 | |
e7392364 | 1092 | static void |
dbdac2b5 | 1093 | il_build_powertable_cmd(struct il_priv *il, struct il_powertable_cmd *cmd) |
0cdc2136 | 1094 | { |
dbdac2b5 SG |
1095 | const __le32 interval[3][IL_POWER_VEC_SIZE] = { |
1096 | SLP_VEC(2, 2, 4, 6, 0xFF), | |
1097 | SLP_VEC(2, 4, 7, 10, 10), | |
1098 | SLP_VEC(4, 7, 10, 10, 0xFF) | |
1099 | }; | |
1100 | int i, dtim_period, no_dtim; | |
1101 | u32 max_sleep; | |
1102 | bool skip; | |
1103 | ||
0cdc2136 SG |
1104 | memset(cmd, 0, sizeof(*cmd)); |
1105 | ||
1106 | if (il->power_data.pci_pm) | |
1107 | cmd->flags |= IL_POWER_PCI_PM_MSK; | |
1108 | ||
dbdac2b5 SG |
1109 | /* if no Power Save, we are done */ |
1110 | if (il->power_data.ps_disabled) | |
1111 | return; | |
1112 | ||
1113 | cmd->flags = IL_POWER_DRIVER_ALLOW_SLEEP_MSK; | |
1114 | cmd->keep_alive_seconds = 0; | |
1115 | cmd->debug_flags = 0; | |
1116 | cmd->rx_data_timeout = cpu_to_le32(25 * 1024); | |
1117 | cmd->tx_data_timeout = cpu_to_le32(25 * 1024); | |
1118 | cmd->keep_alive_beacons = 0; | |
1119 | ||
1120 | dtim_period = il->vif ? il->vif->bss_conf.dtim_period : 0; | |
1121 | ||
1122 | if (dtim_period <= 2) { | |
1123 | memcpy(cmd->sleep_interval, interval[0], sizeof(interval[0])); | |
1124 | no_dtim = 2; | |
1125 | } else if (dtim_period <= 10) { | |
1126 | memcpy(cmd->sleep_interval, interval[1], sizeof(interval[1])); | |
1127 | no_dtim = 2; | |
1128 | } else { | |
1129 | memcpy(cmd->sleep_interval, interval[2], sizeof(interval[2])); | |
1130 | no_dtim = 0; | |
1131 | } | |
1132 | ||
1133 | if (dtim_period == 0) { | |
1134 | dtim_period = 1; | |
1135 | skip = false; | |
1136 | } else { | |
1137 | skip = !!no_dtim; | |
1138 | } | |
1139 | ||
1140 | if (skip) { | |
1141 | __le32 tmp = cmd->sleep_interval[IL_POWER_VEC_SIZE - 1]; | |
1142 | ||
1143 | max_sleep = le32_to_cpu(tmp); | |
1144 | if (max_sleep == 0xFF) | |
1145 | max_sleep = dtim_period * (skip + 1); | |
1146 | else if (max_sleep > dtim_period) | |
1147 | max_sleep = (max_sleep / dtim_period) * dtim_period; | |
1148 | cmd->flags |= IL_POWER_SLEEP_OVER_DTIM_MSK; | |
1149 | } else { | |
1150 | max_sleep = dtim_period; | |
1151 | cmd->flags &= ~IL_POWER_SLEEP_OVER_DTIM_MSK; | |
1152 | } | |
1153 | ||
1154 | for (i = 0; i < IL_POWER_VEC_SIZE; i++) | |
1155 | if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) | |
1156 | cmd->sleep_interval[i] = cpu_to_le32(max_sleep); | |
0cdc2136 SG |
1157 | } |
1158 | ||
1159 | static int | |
1160 | il_set_power(struct il_priv *il, struct il_powertable_cmd *cmd) | |
1161 | { | |
1162 | D_POWER("Sending power/sleep command\n"); | |
1163 | D_POWER("Flags value = 0x%08X\n", cmd->flags); | |
e7392364 SG |
1164 | D_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); |
1165 | D_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); | |
1166 | D_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n", | |
1167 | le32_to_cpu(cmd->sleep_interval[0]), | |
1168 | le32_to_cpu(cmd->sleep_interval[1]), | |
1169 | le32_to_cpu(cmd->sleep_interval[2]), | |
1170 | le32_to_cpu(cmd->sleep_interval[3]), | |
1171 | le32_to_cpu(cmd->sleep_interval[4])); | |
0cdc2136 SG |
1172 | |
1173 | return il_send_cmd_pdu(il, C_POWER_TBL, | |
e7392364 | 1174 | sizeof(struct il_powertable_cmd), cmd); |
0cdc2136 SG |
1175 | } |
1176 | ||
60c46bf8 | 1177 | static int |
e7392364 | 1178 | il_power_set_mode(struct il_priv *il, struct il_powertable_cmd *cmd, bool force) |
0cdc2136 SG |
1179 | { |
1180 | int ret; | |
1181 | bool update_chains; | |
1182 | ||
1183 | lockdep_assert_held(&il->mutex); | |
1184 | ||
1185 | /* Don't update the RX chain when chain noise calibration is running */ | |
1186 | update_chains = il->chain_noise_data.state == IL_CHAIN_NOISE_DONE || | |
e7392364 | 1187 | il->chain_noise_data.state == IL_CHAIN_NOISE_ALIVE; |
0cdc2136 SG |
1188 | |
1189 | if (!memcmp(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)) && !force) | |
1190 | return 0; | |
1191 | ||
1192 | if (!il_is_ready_rf(il)) | |
1193 | return -EIO; | |
1194 | ||
1195 | /* scan complete use sleep_power_next, need to be updated */ | |
1196 | memcpy(&il->power_data.sleep_cmd_next, cmd, sizeof(*cmd)); | |
1197 | if (test_bit(S_SCANNING, &il->status) && !force) { | |
1198 | D_INFO("Defer power set mode while scanning\n"); | |
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | if (cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK) | |
1203 | set_bit(S_POWER_PMI, &il->status); | |
1204 | ||
1205 | ret = il_set_power(il, cmd); | |
1206 | if (!ret) { | |
1207 | if (!(cmd->flags & IL_POWER_DRIVER_ALLOW_SLEEP_MSK)) | |
1208 | clear_bit(S_POWER_PMI, &il->status); | |
1209 | ||
1600b875 SG |
1210 | if (il->ops->update_chain_flags && update_chains) |
1211 | il->ops->update_chain_flags(il); | |
1212 | else if (il->ops->update_chain_flags) | |
e7392364 SG |
1213 | D_POWER("Cannot update the power, chain noise " |
1214 | "calibration running: %d\n", | |
1215 | il->chain_noise_data.state); | |
0cdc2136 SG |
1216 | |
1217 | memcpy(&il->power_data.sleep_cmd, cmd, sizeof(*cmd)); | |
1218 | } else | |
1219 | IL_ERR("set power fail, ret = %d", ret); | |
1220 | ||
1221 | return ret; | |
1222 | } | |
1223 | ||
e7392364 SG |
1224 | int |
1225 | il_power_update_mode(struct il_priv *il, bool force) | |
0cdc2136 SG |
1226 | { |
1227 | struct il_powertable_cmd cmd; | |
1228 | ||
dbdac2b5 SG |
1229 | il_build_powertable_cmd(il, &cmd); |
1230 | ||
0cdc2136 SG |
1231 | return il_power_set_mode(il, &cmd, force); |
1232 | } | |
1233 | EXPORT_SYMBOL(il_power_update_mode); | |
1234 | ||
1235 | /* initialize to default */ | |
e7392364 SG |
1236 | void |
1237 | il_power_initialize(struct il_priv *il) | |
0cdc2136 | 1238 | { |
94e15613 | 1239 | u16 lctl; |
0cdc2136 | 1240 | |
94e15613 | 1241 | pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl); |
f93eaffc | 1242 | il->power_data.pci_pm = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S); |
0cdc2136 SG |
1243 | |
1244 | il->power_data.debug_sleep_level_override = -1; | |
1245 | ||
e7392364 | 1246 | memset(&il->power_data.sleep_cmd, 0, sizeof(il->power_data.sleep_cmd)); |
0cdc2136 SG |
1247 | } |
1248 | EXPORT_SYMBOL(il_power_initialize); | |
1249 | ||
1250 | /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after | |
1251 | * sending probe req. This should be set long enough to hear probe responses | |
1252 | * from more than one AP. */ | |
e7392364 | 1253 | #define IL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */ |
0cdc2136 SG |
1254 | #define IL_ACTIVE_DWELL_TIME_52 (20) |
1255 | ||
1256 | #define IL_ACTIVE_DWELL_FACTOR_24GHZ (3) | |
1257 | #define IL_ACTIVE_DWELL_FACTOR_52GHZ (2) | |
1258 | ||
1259 | /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel. | |
1260 | * Must be set longer than active dwell time. | |
1261 | * For the most reliable scan, set > AP beacon interval (typically 100msec). */ | |
e7392364 | 1262 | #define IL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */ |
0cdc2136 SG |
1263 | #define IL_PASSIVE_DWELL_TIME_52 (10) |
1264 | #define IL_PASSIVE_DWELL_BASE (100) | |
1265 | #define IL_CHANNEL_TUNE_TIME 5 | |
1266 | ||
e7392364 SG |
1267 | static int |
1268 | il_send_scan_abort(struct il_priv *il) | |
0cdc2136 SG |
1269 | { |
1270 | int ret; | |
1271 | struct il_rx_pkt *pkt; | |
1272 | struct il_host_cmd cmd = { | |
1273 | .id = C_SCAN_ABORT, | |
1274 | .flags = CMD_WANT_SKB, | |
1275 | }; | |
1276 | ||
1277 | /* Exit instantly with error when device is not ready | |
1278 | * to receive scan abort command or it does not perform | |
1279 | * hardware scan currently */ | |
1280 | if (!test_bit(S_READY, &il->status) || | |
1281 | !test_bit(S_GEO_CONFIGURED, &il->status) || | |
1282 | !test_bit(S_SCAN_HW, &il->status) || | |
1283 | test_bit(S_FW_ERROR, &il->status) || | |
1284 | test_bit(S_EXIT_PENDING, &il->status)) | |
1285 | return -EIO; | |
1286 | ||
1287 | ret = il_send_cmd_sync(il, &cmd); | |
1288 | if (ret) | |
1289 | return ret; | |
1290 | ||
1291 | pkt = (struct il_rx_pkt *)cmd.reply_page; | |
1292 | if (pkt->u.status != CAN_ABORT_STATUS) { | |
1293 | /* The scan abort will return 1 for success or | |
1294 | * 2 for "failure". A failure condition can be | |
1295 | * due to simply not being in an active scan which | |
1296 | * can occur if we send the scan abort before we | |
1297 | * the microcode has notified us that a scan is | |
1298 | * completed. */ | |
1299 | D_SCAN("SCAN_ABORT ret %d.\n", pkt->u.status); | |
1300 | ret = -EIO; | |
1301 | } | |
1302 | ||
1303 | il_free_pages(il, cmd.reply_page); | |
1304 | return ret; | |
1305 | } | |
1306 | ||
e7392364 SG |
1307 | static void |
1308 | il_complete_scan(struct il_priv *il, bool aborted) | |
0cdc2136 SG |
1309 | { |
1310 | /* check if scan was requested from mac80211 */ | |
1311 | if (il->scan_request) { | |
1312 | D_SCAN("Complete scan in mac80211\n"); | |
1313 | ieee80211_scan_completed(il->hw, aborted); | |
1314 | } | |
1315 | ||
1316 | il->scan_vif = NULL; | |
1317 | il->scan_request = NULL; | |
1318 | } | |
1319 | ||
e7392364 SG |
1320 | void |
1321 | il_force_scan_end(struct il_priv *il) | |
0cdc2136 SG |
1322 | { |
1323 | lockdep_assert_held(&il->mutex); | |
1324 | ||
1325 | if (!test_bit(S_SCANNING, &il->status)) { | |
1326 | D_SCAN("Forcing scan end while not scanning\n"); | |
1327 | return; | |
1328 | } | |
1329 | ||
1330 | D_SCAN("Forcing scan end\n"); | |
1331 | clear_bit(S_SCANNING, &il->status); | |
1332 | clear_bit(S_SCAN_HW, &il->status); | |
1333 | clear_bit(S_SCAN_ABORTING, &il->status); | |
1334 | il_complete_scan(il, true); | |
1335 | } | |
1336 | ||
e7392364 SG |
1337 | static void |
1338 | il_do_scan_abort(struct il_priv *il) | |
0cdc2136 SG |
1339 | { |
1340 | int ret; | |
1341 | ||
1342 | lockdep_assert_held(&il->mutex); | |
1343 | ||
1344 | if (!test_bit(S_SCANNING, &il->status)) { | |
1345 | D_SCAN("Not performing scan to abort\n"); | |
1346 | return; | |
1347 | } | |
1348 | ||
1349 | if (test_and_set_bit(S_SCAN_ABORTING, &il->status)) { | |
1350 | D_SCAN("Scan abort in progress\n"); | |
1351 | return; | |
1352 | } | |
1353 | ||
1354 | ret = il_send_scan_abort(il); | |
1355 | if (ret) { | |
1356 | D_SCAN("Send scan abort failed %d\n", ret); | |
1357 | il_force_scan_end(il); | |
1358 | } else | |
1359 | D_SCAN("Successfully send scan abort\n"); | |
1360 | } | |
1361 | ||
1362 | /** | |
1363 | * il_scan_cancel - Cancel any currently executing HW scan | |
1364 | */ | |
e7392364 SG |
1365 | int |
1366 | il_scan_cancel(struct il_priv *il) | |
0cdc2136 SG |
1367 | { |
1368 | D_SCAN("Queuing abort scan\n"); | |
1369 | queue_work(il->workqueue, &il->abort_scan); | |
1370 | return 0; | |
1371 | } | |
1372 | EXPORT_SYMBOL(il_scan_cancel); | |
1373 | ||
1374 | /** | |
1375 | * il_scan_cancel_timeout - Cancel any currently executing HW scan | |
1376 | * @ms: amount of time to wait (in milliseconds) for scan to abort | |
1377 | * | |
1378 | */ | |
e7392364 SG |
1379 | int |
1380 | il_scan_cancel_timeout(struct il_priv *il, unsigned long ms) | |
0cdc2136 SG |
1381 | { |
1382 | unsigned long timeout = jiffies + msecs_to_jiffies(ms); | |
1383 | ||
1384 | lockdep_assert_held(&il->mutex); | |
1385 | ||
1386 | D_SCAN("Scan cancel timeout\n"); | |
1387 | ||
1388 | il_do_scan_abort(il); | |
1389 | ||
1390 | while (time_before_eq(jiffies, timeout)) { | |
1391 | if (!test_bit(S_SCAN_HW, &il->status)) | |
1392 | break; | |
1393 | msleep(20); | |
1394 | } | |
1395 | ||
1396 | return test_bit(S_SCAN_HW, &il->status); | |
1397 | } | |
1398 | EXPORT_SYMBOL(il_scan_cancel_timeout); | |
1399 | ||
1400 | /* Service response to C_SCAN (0x80) */ | |
e7392364 SG |
1401 | static void |
1402 | il_hdl_scan(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1403 | { |
1404 | #ifdef CONFIG_IWLEGACY_DEBUG | |
1405 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1406 | struct il_scanreq_notification *notif = | |
1407 | (struct il_scanreq_notification *)pkt->u.raw; | |
1408 | ||
1409 | D_SCAN("Scan request status = 0x%x\n", notif->status); | |
1410 | #endif | |
1411 | } | |
1412 | ||
1413 | /* Service N_SCAN_START (0x82) */ | |
e7392364 SG |
1414 | static void |
1415 | il_hdl_scan_start(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1416 | { |
1417 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1418 | struct il_scanstart_notification *notif = | |
1419 | (struct il_scanstart_notification *)pkt->u.raw; | |
1420 | il->scan_start_tsf = le32_to_cpu(notif->tsf_low); | |
e7392364 SG |
1421 | D_SCAN("Scan start: " "%d [802.11%s] " |
1422 | "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n", notif->channel, | |
1423 | notif->band ? "bg" : "a", le32_to_cpu(notif->tsf_high), | |
1424 | le32_to_cpu(notif->tsf_low), notif->status, notif->beacon_timer); | |
0cdc2136 SG |
1425 | } |
1426 | ||
1427 | /* Service N_SCAN_RESULTS (0x83) */ | |
e7392364 SG |
1428 | static void |
1429 | il_hdl_scan_results(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1430 | { |
1431 | #ifdef CONFIG_IWLEGACY_DEBUG | |
1432 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1433 | struct il_scanresults_notification *notif = | |
1434 | (struct il_scanresults_notification *)pkt->u.raw; | |
1435 | ||
e7392364 SG |
1436 | D_SCAN("Scan ch.res: " "%d [802.11%s] " "(TSF: 0x%08X:%08X) - %d " |
1437 | "elapsed=%lu usec\n", notif->channel, notif->band ? "bg" : "a", | |
1438 | le32_to_cpu(notif->tsf_high), le32_to_cpu(notif->tsf_low), | |
1439 | le32_to_cpu(notif->stats[0]), | |
1440 | le32_to_cpu(notif->tsf_low) - il->scan_start_tsf); | |
0cdc2136 SG |
1441 | #endif |
1442 | } | |
1443 | ||
1444 | /* Service N_SCAN_COMPLETE (0x84) */ | |
e7392364 SG |
1445 | static void |
1446 | il_hdl_scan_complete(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
1447 | { |
1448 | ||
1449 | #ifdef CONFIG_IWLEGACY_DEBUG | |
1450 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
1451 | struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw; | |
1452 | #endif | |
1453 | ||
e7392364 SG |
1454 | D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n", |
1455 | scan_notif->scanned_channels, scan_notif->tsf_low, | |
1456 | scan_notif->tsf_high, scan_notif->status); | |
0cdc2136 SG |
1457 | |
1458 | /* The HW is no longer scanning */ | |
1459 | clear_bit(S_SCAN_HW, &il->status); | |
1460 | ||
1461 | D_SCAN("Scan on %sGHz took %dms\n", | |
e7392364 SG |
1462 | (il->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2", |
1463 | jiffies_to_msecs(jiffies - il->scan_start)); | |
0cdc2136 SG |
1464 | |
1465 | queue_work(il->workqueue, &il->scan_completed); | |
1466 | } | |
1467 | ||
e7392364 SG |
1468 | void |
1469 | il_setup_rx_scan_handlers(struct il_priv *il) | |
0cdc2136 SG |
1470 | { |
1471 | /* scan handlers */ | |
1472 | il->handlers[C_SCAN] = il_hdl_scan; | |
e7392364 SG |
1473 | il->handlers[N_SCAN_START] = il_hdl_scan_start; |
1474 | il->handlers[N_SCAN_RESULTS] = il_hdl_scan_results; | |
1475 | il->handlers[N_SCAN_COMPLETE] = il_hdl_scan_complete; | |
0cdc2136 SG |
1476 | } |
1477 | EXPORT_SYMBOL(il_setup_rx_scan_handlers); | |
1478 | ||
becdbc59 | 1479 | u16 |
e7392364 SG |
1480 | il_get_active_dwell_time(struct il_priv *il, enum ieee80211_band band, |
1481 | u8 n_probes) | |
0cdc2136 SG |
1482 | { |
1483 | if (band == IEEE80211_BAND_5GHZ) | |
1484 | return IL_ACTIVE_DWELL_TIME_52 + | |
e7392364 | 1485 | IL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1); |
0cdc2136 SG |
1486 | else |
1487 | return IL_ACTIVE_DWELL_TIME_24 + | |
e7392364 | 1488 | IL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1); |
0cdc2136 SG |
1489 | } |
1490 | EXPORT_SYMBOL(il_get_active_dwell_time); | |
1491 | ||
e7392364 | 1492 | u16 |
1722f8e1 SG |
1493 | il_get_passive_dwell_time(struct il_priv *il, enum ieee80211_band band, |
1494 | struct ieee80211_vif *vif) | |
0cdc2136 | 1495 | { |
0cdc2136 SG |
1496 | u16 value; |
1497 | ||
e7392364 SG |
1498 | u16 passive = |
1499 | (band == | |
1500 | IEEE80211_BAND_2GHZ) ? IL_PASSIVE_DWELL_BASE + | |
1501 | IL_PASSIVE_DWELL_TIME_24 : IL_PASSIVE_DWELL_BASE + | |
1502 | IL_PASSIVE_DWELL_TIME_52; | |
0cdc2136 SG |
1503 | |
1504 | if (il_is_any_associated(il)) { | |
1505 | /* | |
1506 | * If we're associated, we clamp the maximum passive | |
1507 | * dwell time to be 98% of the smallest beacon interval | |
1508 | * (minus 2 * channel tune time) | |
1509 | */ | |
83007196 | 1510 | value = il->vif ? il->vif->bss_conf.beacon_int : 0; |
0cdc2136 SG |
1511 | if (value > IL_PASSIVE_DWELL_BASE || !value) |
1512 | value = IL_PASSIVE_DWELL_BASE; | |
1513 | value = (value * 98) / 100 - IL_CHANNEL_TUNE_TIME * 2; | |
1514 | passive = min(value, passive); | |
1515 | } | |
1516 | ||
1517 | return passive; | |
1518 | } | |
1519 | EXPORT_SYMBOL(il_get_passive_dwell_time); | |
1520 | ||
e7392364 SG |
1521 | void |
1522 | il_init_scan_params(struct il_priv *il) | |
0cdc2136 SG |
1523 | { |
1524 | u8 ant_idx = fls(il->hw_params.valid_tx_ant) - 1; | |
1525 | if (!il->scan_tx_ant[IEEE80211_BAND_5GHZ]) | |
1526 | il->scan_tx_ant[IEEE80211_BAND_5GHZ] = ant_idx; | |
1527 | if (!il->scan_tx_ant[IEEE80211_BAND_2GHZ]) | |
1528 | il->scan_tx_ant[IEEE80211_BAND_2GHZ] = ant_idx; | |
1529 | } | |
1530 | EXPORT_SYMBOL(il_init_scan_params); | |
1531 | ||
e7392364 SG |
1532 | static int |
1533 | il_scan_initiate(struct il_priv *il, struct ieee80211_vif *vif) | |
0cdc2136 SG |
1534 | { |
1535 | int ret; | |
1536 | ||
1537 | lockdep_assert_held(&il->mutex); | |
1538 | ||
0cdc2136 SG |
1539 | cancel_delayed_work(&il->scan_check); |
1540 | ||
1541 | if (!il_is_ready_rf(il)) { | |
1542 | IL_WARN("Request scan called when driver not ready.\n"); | |
1543 | return -EIO; | |
1544 | } | |
1545 | ||
1546 | if (test_bit(S_SCAN_HW, &il->status)) { | |
e7392364 | 1547 | D_SCAN("Multiple concurrent scan requests in parallel.\n"); |
0cdc2136 SG |
1548 | return -EBUSY; |
1549 | } | |
1550 | ||
1551 | if (test_bit(S_SCAN_ABORTING, &il->status)) { | |
1552 | D_SCAN("Scan request while abort pending.\n"); | |
1553 | return -EBUSY; | |
1554 | } | |
1555 | ||
1556 | D_SCAN("Starting scan...\n"); | |
1557 | ||
1558 | set_bit(S_SCANNING, &il->status); | |
1559 | il->scan_start = jiffies; | |
1560 | ||
c9363551 | 1561 | ret = il->ops->request_scan(il, vif); |
0cdc2136 SG |
1562 | if (ret) { |
1563 | clear_bit(S_SCANNING, &il->status); | |
1564 | return ret; | |
1565 | } | |
1566 | ||
1567 | queue_delayed_work(il->workqueue, &il->scan_check, | |
1568 | IL_SCAN_CHECK_WATCHDOG); | |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
e7392364 SG |
1573 | int |
1574 | il_mac_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
1575 | struct cfg80211_scan_request *req) | |
0cdc2136 SG |
1576 | { |
1577 | struct il_priv *il = hw->priv; | |
1578 | int ret; | |
1579 | ||
9ce7b73c SG |
1580 | if (req->n_channels == 0) { |
1581 | IL_ERR("Can not scan on no channels.\n"); | |
0cdc2136 | 1582 | return -EINVAL; |
9ce7b73c | 1583 | } |
0cdc2136 SG |
1584 | |
1585 | mutex_lock(&il->mutex); | |
9ce7b73c | 1586 | D_MAC80211("enter\n"); |
0cdc2136 SG |
1587 | |
1588 | if (test_bit(S_SCANNING, &il->status)) { | |
1589 | D_SCAN("Scan already in progress.\n"); | |
1590 | ret = -EAGAIN; | |
1591 | goto out_unlock; | |
1592 | } | |
1593 | ||
1594 | /* mac80211 will only ask for one band at a time */ | |
1595 | il->scan_request = req; | |
1596 | il->scan_vif = vif; | |
1597 | il->scan_band = req->channels[0]->band; | |
1598 | ||
1599 | ret = il_scan_initiate(il, vif); | |
1600 | ||
0cdc2136 | 1601 | out_unlock: |
9ce7b73c | 1602 | D_MAC80211("leave ret %d\n", ret); |
0cdc2136 SG |
1603 | mutex_unlock(&il->mutex); |
1604 | ||
1605 | return ret; | |
1606 | } | |
1607 | EXPORT_SYMBOL(il_mac_hw_scan); | |
1608 | ||
e7392364 SG |
1609 | static void |
1610 | il_bg_scan_check(struct work_struct *data) | |
0cdc2136 SG |
1611 | { |
1612 | struct il_priv *il = | |
1613 | container_of(data, struct il_priv, scan_check.work); | |
1614 | ||
1615 | D_SCAN("Scan check work\n"); | |
1616 | ||
1617 | /* Since we are here firmware does not finish scan and | |
1618 | * most likely is in bad shape, so we don't bother to | |
1619 | * send abort command, just force scan complete to mac80211 */ | |
1620 | mutex_lock(&il->mutex); | |
1621 | il_force_scan_end(il); | |
1622 | mutex_unlock(&il->mutex); | |
1623 | } | |
1624 | ||
1625 | /** | |
1626 | * il_fill_probe_req - fill in all required fields and IE for probe request | |
1627 | */ | |
1628 | ||
1629 | u16 | |
1630 | il_fill_probe_req(struct il_priv *il, struct ieee80211_mgmt *frame, | |
1722f8e1 | 1631 | const u8 *ta, const u8 *ies, int ie_len, int left) |
0cdc2136 SG |
1632 | { |
1633 | int len = 0; | |
1634 | u8 *pos = NULL; | |
1635 | ||
1636 | /* Make sure there is enough space for the probe request, | |
1637 | * two mandatory IEs and the data */ | |
1638 | left -= 24; | |
1639 | if (left < 0) | |
1640 | return 0; | |
1641 | ||
1642 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
742e7a93 | 1643 | eth_broadcast_addr(frame->da); |
0cdc2136 | 1644 | memcpy(frame->sa, ta, ETH_ALEN); |
742e7a93 | 1645 | eth_broadcast_addr(frame->bssid); |
0cdc2136 SG |
1646 | frame->seq_ctrl = 0; |
1647 | ||
1648 | len += 24; | |
1649 | ||
1650 | /* ...next IE... */ | |
1651 | pos = &frame->u.probe_req.variable[0]; | |
1652 | ||
1653 | /* fill in our indirect SSID IE */ | |
1654 | left -= 2; | |
1655 | if (left < 0) | |
1656 | return 0; | |
1657 | *pos++ = WLAN_EID_SSID; | |
1658 | *pos++ = 0; | |
1659 | ||
1660 | len += 2; | |
1661 | ||
1662 | if (WARN_ON(left < ie_len)) | |
1663 | return len; | |
1664 | ||
1665 | if (ies && ie_len) { | |
1666 | memcpy(pos, ies, ie_len); | |
1667 | len += ie_len; | |
1668 | } | |
1669 | ||
e7392364 | 1670 | return (u16) len; |
0cdc2136 SG |
1671 | } |
1672 | EXPORT_SYMBOL(il_fill_probe_req); | |
1673 | ||
e7392364 SG |
1674 | static void |
1675 | il_bg_abort_scan(struct work_struct *work) | |
0cdc2136 SG |
1676 | { |
1677 | struct il_priv *il = container_of(work, struct il_priv, abort_scan); | |
1678 | ||
1679 | D_SCAN("Abort scan work\n"); | |
1680 | ||
1681 | /* We keep scan_check work queued in case when firmware will not | |
1682 | * report back scan completed notification */ | |
1683 | mutex_lock(&il->mutex); | |
1684 | il_scan_cancel_timeout(il, 200); | |
1685 | mutex_unlock(&il->mutex); | |
1686 | } | |
1687 | ||
e7392364 SG |
1688 | static void |
1689 | il_bg_scan_completed(struct work_struct *work) | |
0cdc2136 | 1690 | { |
e7392364 | 1691 | struct il_priv *il = container_of(work, struct il_priv, scan_completed); |
0cdc2136 SG |
1692 | bool aborted; |
1693 | ||
1694 | D_SCAN("Completed scan.\n"); | |
1695 | ||
1696 | cancel_delayed_work(&il->scan_check); | |
1697 | ||
1698 | mutex_lock(&il->mutex); | |
1699 | ||
1700 | aborted = test_and_clear_bit(S_SCAN_ABORTING, &il->status); | |
1701 | if (aborted) | |
1702 | D_SCAN("Aborted scan completed.\n"); | |
1703 | ||
1704 | if (!test_and_clear_bit(S_SCANNING, &il->status)) { | |
1705 | D_SCAN("Scan already completed.\n"); | |
1706 | goto out_settings; | |
1707 | } | |
1708 | ||
1709 | il_complete_scan(il, aborted); | |
1710 | ||
1711 | out_settings: | |
1712 | /* Can we still talk to firmware ? */ | |
1713 | if (!il_is_ready_rf(il)) | |
1714 | goto out; | |
1715 | ||
1716 | /* | |
1717 | * We do not commit power settings while scan is pending, | |
1718 | * do it now if the settings changed. | |
1719 | */ | |
1720 | il_power_set_mode(il, &il->power_data.sleep_cmd_next, false); | |
1721 | il_set_tx_power(il, il->tx_power_next, false); | |
1722 | ||
c9363551 | 1723 | il->ops->post_scan(il); |
0cdc2136 SG |
1724 | |
1725 | out: | |
1726 | mutex_unlock(&il->mutex); | |
1727 | } | |
1728 | ||
e7392364 SG |
1729 | void |
1730 | il_setup_scan_deferred_work(struct il_priv *il) | |
0cdc2136 SG |
1731 | { |
1732 | INIT_WORK(&il->scan_completed, il_bg_scan_completed); | |
1733 | INIT_WORK(&il->abort_scan, il_bg_abort_scan); | |
1734 | INIT_DELAYED_WORK(&il->scan_check, il_bg_scan_check); | |
1735 | } | |
1736 | EXPORT_SYMBOL(il_setup_scan_deferred_work); | |
1737 | ||
e7392364 SG |
1738 | void |
1739 | il_cancel_scan_deferred_work(struct il_priv *il) | |
0cdc2136 SG |
1740 | { |
1741 | cancel_work_sync(&il->abort_scan); | |
1742 | cancel_work_sync(&il->scan_completed); | |
1743 | ||
1744 | if (cancel_delayed_work_sync(&il->scan_check)) { | |
1745 | mutex_lock(&il->mutex); | |
1746 | il_force_scan_end(il); | |
1747 | mutex_unlock(&il->mutex); | |
1748 | } | |
1749 | } | |
1750 | EXPORT_SYMBOL(il_cancel_scan_deferred_work); | |
1751 | ||
1752 | /* il->sta_lock must be held */ | |
e7392364 SG |
1753 | static void |
1754 | il_sta_ucode_activate(struct il_priv *il, u8 sta_id) | |
0cdc2136 SG |
1755 | { |
1756 | ||
1757 | if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) | |
e7392364 SG |
1758 | IL_ERR("ACTIVATE a non DRIVER active station id %u addr %pM\n", |
1759 | sta_id, il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1760 | |
1761 | if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) { | |
e7392364 SG |
1762 | D_ASSOC("STA id %u addr %pM already present" |
1763 | " in uCode (according to driver)\n", sta_id, | |
1764 | il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1765 | } else { |
1766 | il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE; | |
e7392364 SG |
1767 | D_ASSOC("Added STA id %u addr %pM to uCode\n", sta_id, |
1768 | il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1769 | } |
1770 | } | |
1771 | ||
e7392364 SG |
1772 | static int |
1773 | il_process_add_sta_resp(struct il_priv *il, struct il_addsta_cmd *addsta, | |
1774 | struct il_rx_pkt *pkt, bool sync) | |
0cdc2136 SG |
1775 | { |
1776 | u8 sta_id = addsta->sta.sta_id; | |
1777 | unsigned long flags; | |
1778 | int ret = -EIO; | |
1779 | ||
1780 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { | |
e7392364 | 1781 | IL_ERR("Bad return from C_ADD_STA (0x%08X)\n", pkt->hdr.flags); |
0cdc2136 SG |
1782 | return ret; |
1783 | } | |
1784 | ||
e7392364 | 1785 | D_INFO("Processing response for adding station %u\n", sta_id); |
0cdc2136 SG |
1786 | |
1787 | spin_lock_irqsave(&il->sta_lock, flags); | |
1788 | ||
1789 | switch (pkt->u.add_sta.status) { | |
1790 | case ADD_STA_SUCCESS_MSK: | |
1791 | D_INFO("C_ADD_STA PASSED\n"); | |
1792 | il_sta_ucode_activate(il, sta_id); | |
1793 | ret = 0; | |
1794 | break; | |
1795 | case ADD_STA_NO_ROOM_IN_TBL: | |
e7392364 | 1796 | IL_ERR("Adding station %d failed, no room in table.\n", sta_id); |
0cdc2136 SG |
1797 | break; |
1798 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
e7392364 SG |
1799 | IL_ERR("Adding station %d failed, no block ack resource.\n", |
1800 | sta_id); | |
0cdc2136 SG |
1801 | break; |
1802 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
1803 | IL_ERR("Attempting to modify non-existing station %d\n", | |
e7392364 | 1804 | sta_id); |
0cdc2136 SG |
1805 | break; |
1806 | default: | |
e7392364 | 1807 | D_ASSOC("Received C_ADD_STA:(0x%08X)\n", pkt->u.add_sta.status); |
0cdc2136 SG |
1808 | break; |
1809 | } | |
1810 | ||
1811 | D_INFO("%s station id %u addr %pM\n", | |
e7392364 SG |
1812 | il->stations[sta_id].sta.mode == |
1813 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", sta_id, | |
1814 | il->stations[sta_id].sta.sta.addr); | |
0cdc2136 SG |
1815 | |
1816 | /* | |
1817 | * XXX: The MAC address in the command buffer is often changed from | |
1818 | * the original sent to the device. That is, the MAC address | |
1819 | * written to the command buffer often is not the same MAC address | |
1820 | * read from the command buffer when the command returns. This | |
1821 | * issue has not yet been resolved and this debugging is left to | |
1822 | * observe the problem. | |
1823 | */ | |
1824 | D_INFO("%s station according to cmd buffer %pM\n", | |
e7392364 SG |
1825 | il->stations[sta_id].sta.mode == |
1826 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", addsta->sta.addr); | |
0cdc2136 SG |
1827 | spin_unlock_irqrestore(&il->sta_lock, flags); |
1828 | ||
1829 | return ret; | |
1830 | } | |
1831 | ||
e7392364 SG |
1832 | static void |
1833 | il_add_sta_callback(struct il_priv *il, struct il_device_cmd *cmd, | |
1834 | struct il_rx_pkt *pkt) | |
0cdc2136 | 1835 | { |
e7392364 | 1836 | struct il_addsta_cmd *addsta = (struct il_addsta_cmd *)cmd->cmd.payload; |
0cdc2136 SG |
1837 | |
1838 | il_process_add_sta_resp(il, addsta, pkt, false); | |
1839 | ||
1840 | } | |
1841 | ||
e7392364 SG |
1842 | int |
1843 | il_send_add_sta(struct il_priv *il, struct il_addsta_cmd *sta, u8 flags) | |
0cdc2136 SG |
1844 | { |
1845 | struct il_rx_pkt *pkt = NULL; | |
1846 | int ret = 0; | |
1847 | u8 data[sizeof(*sta)]; | |
1848 | struct il_host_cmd cmd = { | |
1849 | .id = C_ADD_STA, | |
1850 | .flags = flags, | |
1851 | .data = data, | |
1852 | }; | |
1853 | u8 sta_id __maybe_unused = sta->sta.sta_id; | |
1854 | ||
e7392364 SG |
1855 | D_INFO("Adding sta %u (%pM) %ssynchronously\n", sta_id, sta->sta.addr, |
1856 | flags & CMD_ASYNC ? "a" : ""); | |
0cdc2136 SG |
1857 | |
1858 | if (flags & CMD_ASYNC) | |
1859 | cmd.callback = il_add_sta_callback; | |
1860 | else { | |
1861 | cmd.flags |= CMD_WANT_SKB; | |
1862 | might_sleep(); | |
1863 | } | |
1864 | ||
c9363551 | 1865 | cmd.len = il->ops->build_addsta_hcmd(sta, data); |
0cdc2136 SG |
1866 | ret = il_send_cmd(il, &cmd); |
1867 | ||
1868 | if (ret || (flags & CMD_ASYNC)) | |
1869 | return ret; | |
1870 | ||
1871 | if (ret == 0) { | |
1872 | pkt = (struct il_rx_pkt *)cmd.reply_page; | |
1873 | ret = il_process_add_sta_resp(il, sta, pkt, true); | |
1874 | } | |
1875 | il_free_pages(il, cmd.reply_page); | |
1876 | ||
1877 | return ret; | |
1878 | } | |
1879 | EXPORT_SYMBOL(il_send_add_sta); | |
1880 | ||
e7392364 | 1881 | static void |
83007196 | 1882 | il_set_ht_add_station(struct il_priv *il, u8 idx, struct ieee80211_sta *sta) |
0cdc2136 SG |
1883 | { |
1884 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; | |
1885 | __le32 sta_flags; | |
0cdc2136 SG |
1886 | |
1887 | if (!sta || !sta_ht_inf->ht_supported) | |
1888 | goto done; | |
1889 | ||
0cdc2136 | 1890 | D_ASSOC("spatial multiplexing power save mode: %s\n", |
af0ed69b JB |
1891 | (sta->smps_mode == IEEE80211_SMPS_STATIC) ? "static" : |
1892 | (sta->smps_mode == IEEE80211_SMPS_DYNAMIC) ? "dynamic" : | |
1722f8e1 | 1893 | "disabled"); |
0cdc2136 SG |
1894 | |
1895 | sta_flags = il->stations[idx].sta.station_flags; | |
1896 | ||
1897 | sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); | |
1898 | ||
af0ed69b JB |
1899 | switch (sta->smps_mode) { |
1900 | case IEEE80211_SMPS_STATIC: | |
0cdc2136 SG |
1901 | sta_flags |= STA_FLG_MIMO_DIS_MSK; |
1902 | break; | |
af0ed69b | 1903 | case IEEE80211_SMPS_DYNAMIC: |
0cdc2136 SG |
1904 | sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
1905 | break; | |
af0ed69b | 1906 | case IEEE80211_SMPS_OFF: |
0cdc2136 SG |
1907 | break; |
1908 | default: | |
af0ed69b | 1909 | IL_WARN("Invalid MIMO PS mode %d\n", sta->smps_mode); |
0cdc2136 SG |
1910 | break; |
1911 | } | |
1912 | ||
e7392364 SG |
1913 | sta_flags |= |
1914 | cpu_to_le32((u32) sta_ht_inf-> | |
1915 | ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
0cdc2136 | 1916 | |
e7392364 SG |
1917 | sta_flags |= |
1918 | cpu_to_le32((u32) sta_ht_inf-> | |
1919 | ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
0cdc2136 | 1920 | |
83007196 | 1921 | if (il_is_ht40_tx_allowed(il, &sta->ht_cap)) |
0cdc2136 SG |
1922 | sta_flags |= STA_FLG_HT40_EN_MSK; |
1923 | else | |
1924 | sta_flags &= ~STA_FLG_HT40_EN_MSK; | |
1925 | ||
1926 | il->stations[idx].sta.station_flags = sta_flags; | |
e7392364 | 1927 | done: |
0cdc2136 SG |
1928 | return; |
1929 | } | |
1930 | ||
1931 | /** | |
1932 | * il_prep_station - Prepare station information for addition | |
1933 | * | |
1934 | * should be called with sta_lock held | |
1935 | */ | |
e7392364 | 1936 | u8 |
83007196 SG |
1937 | il_prep_station(struct il_priv *il, const u8 *addr, bool is_ap, |
1938 | struct ieee80211_sta *sta) | |
0cdc2136 SG |
1939 | { |
1940 | struct il_station_entry *station; | |
1941 | int i; | |
1942 | u8 sta_id = IL_INVALID_STATION; | |
1943 | u16 rate; | |
1944 | ||
1945 | if (is_ap) | |
8f9e5645 | 1946 | sta_id = IL_AP_ID; |
0cdc2136 | 1947 | else if (is_broadcast_ether_addr(addr)) |
b16db50a | 1948 | sta_id = il->hw_params.bcast_id; |
0cdc2136 SG |
1949 | else |
1950 | for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) { | |
2e42e474 JP |
1951 | if (ether_addr_equal(il->stations[i].sta.sta.addr, |
1952 | addr)) { | |
0cdc2136 SG |
1953 | sta_id = i; |
1954 | break; | |
1955 | } | |
1956 | ||
1957 | if (!il->stations[i].used && | |
1958 | sta_id == IL_INVALID_STATION) | |
1959 | sta_id = i; | |
1960 | } | |
1961 | ||
1962 | /* | |
1963 | * These two conditions have the same outcome, but keep them | |
1964 | * separate | |
1965 | */ | |
1966 | if (unlikely(sta_id == IL_INVALID_STATION)) | |
1967 | return sta_id; | |
1968 | ||
1969 | /* | |
1970 | * uCode is not able to deal with multiple requests to add a | |
1971 | * station. Keep track if one is in progress so that we do not send | |
1972 | * another. | |
1973 | */ | |
1974 | if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { | |
e7392364 | 1975 | D_INFO("STA %d already in process of being added.\n", sta_id); |
0cdc2136 SG |
1976 | return sta_id; |
1977 | } | |
1978 | ||
1979 | if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && | |
1980 | (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) && | |
2e42e474 | 1981 | ether_addr_equal(il->stations[sta_id].sta.sta.addr, addr)) { |
e7392364 SG |
1982 | D_ASSOC("STA %d (%pM) already added, not adding again.\n", |
1983 | sta_id, addr); | |
0cdc2136 SG |
1984 | return sta_id; |
1985 | } | |
1986 | ||
1987 | station = &il->stations[sta_id]; | |
1988 | station->used = IL_STA_DRIVER_ACTIVE; | |
e7392364 | 1989 | D_ASSOC("Add STA to driver ID %d: %pM\n", sta_id, addr); |
0cdc2136 SG |
1990 | il->num_stations++; |
1991 | ||
1992 | /* Set up the C_ADD_STA command to send to device */ | |
1993 | memset(&station->sta, 0, sizeof(struct il_addsta_cmd)); | |
1994 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
1995 | station->sta.mode = 0; | |
1996 | station->sta.sta.sta_id = sta_id; | |
fd6415bc | 1997 | station->sta.station_flags = 0; |
0cdc2136 | 1998 | |
0cdc2136 SG |
1999 | /* |
2000 | * OK to call unconditionally, since local stations (IBSS BSSID | |
2001 | * STA and broadcast STA) pass in a NULL sta, and mac80211 | |
2002 | * doesn't allow HT IBSS. | |
2003 | */ | |
83007196 | 2004 | il_set_ht_add_station(il, sta_id, sta); |
0cdc2136 SG |
2005 | |
2006 | /* 3945 only */ | |
e7392364 | 2007 | rate = (il->band == IEEE80211_BAND_5GHZ) ? RATE_6M_PLCP : RATE_1M_PLCP; |
0cdc2136 SG |
2008 | /* Turn on both antennas for the station... */ |
2009 | station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK); | |
2010 | ||
2011 | return sta_id; | |
2012 | ||
2013 | } | |
2014 | EXPORT_SYMBOL_GPL(il_prep_station); | |
2015 | ||
2016 | #define STA_WAIT_TIMEOUT (HZ/2) | |
2017 | ||
2018 | /** | |
2019 | * il_add_station_common - | |
2020 | */ | |
2021 | int | |
83007196 SG |
2022 | il_add_station_common(struct il_priv *il, const u8 *addr, bool is_ap, |
2023 | struct ieee80211_sta *sta, u8 *sta_id_r) | |
0cdc2136 SG |
2024 | { |
2025 | unsigned long flags_spin; | |
2026 | int ret = 0; | |
2027 | u8 sta_id; | |
2028 | struct il_addsta_cmd sta_cmd; | |
2029 | ||
2030 | *sta_id_r = 0; | |
2031 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
83007196 | 2032 | sta_id = il_prep_station(il, addr, is_ap, sta); |
0cdc2136 | 2033 | if (sta_id == IL_INVALID_STATION) { |
e7392364 | 2034 | IL_ERR("Unable to prepare station %pM for addition\n", addr); |
0cdc2136 SG |
2035 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
2036 | return -EINVAL; | |
2037 | } | |
2038 | ||
2039 | /* | |
2040 | * uCode is not able to deal with multiple requests to add a | |
2041 | * station. Keep track if one is in progress so that we do not send | |
2042 | * another. | |
2043 | */ | |
2044 | if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) { | |
e7392364 | 2045 | D_INFO("STA %d already in process of being added.\n", sta_id); |
0cdc2136 SG |
2046 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
2047 | return -EEXIST; | |
2048 | } | |
2049 | ||
2050 | if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) && | |
2051 | (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { | |
e7392364 | 2052 | D_ASSOC("STA %d (%pM) already added, not adding again.\n", |
0cdc2136 SG |
2053 | sta_id, addr); |
2054 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2055 | return -EEXIST; | |
2056 | } | |
2057 | ||
2058 | il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS; | |
2059 | memcpy(&sta_cmd, &il->stations[sta_id].sta, | |
e7392364 | 2060 | sizeof(struct il_addsta_cmd)); |
0cdc2136 SG |
2061 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); |
2062 | ||
2063 | /* Add station to device's station table */ | |
2064 | ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); | |
2065 | if (ret) { | |
2066 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2067 | IL_ERR("Adding station %pM failed.\n", | |
e7392364 | 2068 | il->stations[sta_id].sta.sta.addr); |
0cdc2136 SG |
2069 | il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; |
2070 | il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS; | |
2071 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2072 | } | |
2073 | *sta_id_r = sta_id; | |
2074 | return ret; | |
2075 | } | |
2076 | EXPORT_SYMBOL(il_add_station_common); | |
2077 | ||
2078 | /** | |
2079 | * il_sta_ucode_deactivate - deactivate ucode status for a station | |
2080 | * | |
2081 | * il->sta_lock must be held | |
2082 | */ | |
e7392364 SG |
2083 | static void |
2084 | il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id) | |
0cdc2136 SG |
2085 | { |
2086 | /* Ucode must be active and driver must be non active */ | |
e7392364 SG |
2087 | if ((il->stations[sta_id]. |
2088 | used & (IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) != | |
2089 | IL_STA_UCODE_ACTIVE) | |
0cdc2136 SG |
2090 | IL_ERR("removed non active STA %u\n", sta_id); |
2091 | ||
2092 | il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE; | |
2093 | ||
2094 | memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry)); | |
2095 | D_ASSOC("Removed STA %u\n", sta_id); | |
2096 | } | |
2097 | ||
e7392364 SG |
2098 | static int |
2099 | il_send_remove_station(struct il_priv *il, const u8 * addr, int sta_id, | |
2100 | bool temporary) | |
0cdc2136 SG |
2101 | { |
2102 | struct il_rx_pkt *pkt; | |
2103 | int ret; | |
2104 | ||
2105 | unsigned long flags_spin; | |
2106 | struct il_rem_sta_cmd rm_sta_cmd; | |
2107 | ||
2108 | struct il_host_cmd cmd = { | |
2109 | .id = C_REM_STA, | |
2110 | .len = sizeof(struct il_rem_sta_cmd), | |
2111 | .flags = CMD_SYNC, | |
2112 | .data = &rm_sta_cmd, | |
2113 | }; | |
2114 | ||
2115 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
2116 | rm_sta_cmd.num_sta = 1; | |
2117 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); | |
2118 | ||
2119 | cmd.flags |= CMD_WANT_SKB; | |
2120 | ||
2121 | ret = il_send_cmd(il, &cmd); | |
2122 | ||
2123 | if (ret) | |
2124 | return ret; | |
2125 | ||
2126 | pkt = (struct il_rx_pkt *)cmd.reply_page; | |
2127 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { | |
e7392364 | 2128 | IL_ERR("Bad return from C_REM_STA (0x%08X)\n", pkt->hdr.flags); |
0cdc2136 SG |
2129 | ret = -EIO; |
2130 | } | |
2131 | ||
2132 | if (!ret) { | |
2133 | switch (pkt->u.rem_sta.status) { | |
2134 | case REM_STA_SUCCESS_MSK: | |
2135 | if (!temporary) { | |
2136 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2137 | il_sta_ucode_deactivate(il, sta_id); | |
2138 | spin_unlock_irqrestore(&il->sta_lock, | |
e7392364 | 2139 | flags_spin); |
0cdc2136 SG |
2140 | } |
2141 | D_ASSOC("C_REM_STA PASSED\n"); | |
2142 | break; | |
2143 | default: | |
2144 | ret = -EIO; | |
2145 | IL_ERR("C_REM_STA failed\n"); | |
2146 | break; | |
2147 | } | |
2148 | } | |
2149 | il_free_pages(il, cmd.reply_page); | |
2150 | ||
2151 | return ret; | |
2152 | } | |
2153 | ||
2154 | /** | |
2155 | * il_remove_station - Remove driver's knowledge of station. | |
2156 | */ | |
e7392364 SG |
2157 | int |
2158 | il_remove_station(struct il_priv *il, const u8 sta_id, const u8 * addr) | |
0cdc2136 SG |
2159 | { |
2160 | unsigned long flags; | |
2161 | ||
2162 | if (!il_is_ready(il)) { | |
e7392364 SG |
2163 | D_INFO("Unable to remove station %pM, device not ready.\n", |
2164 | addr); | |
0cdc2136 SG |
2165 | /* |
2166 | * It is typical for stations to be removed when we are | |
2167 | * going down. Return success since device will be down | |
2168 | * soon anyway | |
2169 | */ | |
2170 | return 0; | |
2171 | } | |
2172 | ||
e7392364 | 2173 | D_ASSOC("Removing STA from driver:%d %pM\n", sta_id, addr); |
0cdc2136 SG |
2174 | |
2175 | if (WARN_ON(sta_id == IL_INVALID_STATION)) | |
2176 | return -EINVAL; | |
2177 | ||
2178 | spin_lock_irqsave(&il->sta_lock, flags); | |
2179 | ||
2180 | if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) { | |
e7392364 | 2181 | D_INFO("Removing %pM but non DRIVER active\n", addr); |
0cdc2136 SG |
2182 | goto out_err; |
2183 | } | |
2184 | ||
2185 | if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) { | |
e7392364 | 2186 | D_INFO("Removing %pM but non UCODE active\n", addr); |
0cdc2136 SG |
2187 | goto out_err; |
2188 | } | |
2189 | ||
2190 | if (il->stations[sta_id].used & IL_STA_LOCAL) { | |
2191 | kfree(il->stations[sta_id].lq); | |
2192 | il->stations[sta_id].lq = NULL; | |
2193 | } | |
2194 | ||
2195 | il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE; | |
2196 | ||
2197 | il->num_stations--; | |
2198 | ||
2199 | BUG_ON(il->num_stations < 0); | |
2200 | ||
2201 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
2202 | ||
2203 | return il_send_remove_station(il, addr, sta_id, false); | |
2204 | out_err: | |
2205 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
2206 | return -EINVAL; | |
2207 | } | |
2208 | EXPORT_SYMBOL_GPL(il_remove_station); | |
2209 | ||
2210 | /** | |
2211 | * il_clear_ucode_stations - clear ucode station table bits | |
2212 | * | |
2213 | * This function clears all the bits in the driver indicating | |
2214 | * which stations are active in the ucode. Call when something | |
2215 | * other than explicit station management would cause this in | |
2216 | * the ucode, e.g. unassociated RXON. | |
2217 | */ | |
e7392364 | 2218 | void |
83007196 | 2219 | il_clear_ucode_stations(struct il_priv *il) |
0cdc2136 SG |
2220 | { |
2221 | int i; | |
2222 | unsigned long flags_spin; | |
2223 | bool cleared = false; | |
2224 | ||
2225 | D_INFO("Clearing ucode stations in driver\n"); | |
2226 | ||
2227 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2228 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
0cdc2136 | 2229 | if (il->stations[i].used & IL_STA_UCODE_ACTIVE) { |
e7392364 | 2230 | D_INFO("Clearing ucode active for station %d\n", i); |
0cdc2136 SG |
2231 | il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; |
2232 | cleared = true; | |
2233 | } | |
2234 | } | |
2235 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2236 | ||
2237 | if (!cleared) | |
e7392364 | 2238 | D_INFO("No active stations found to be cleared\n"); |
0cdc2136 SG |
2239 | } |
2240 | EXPORT_SYMBOL(il_clear_ucode_stations); | |
2241 | ||
2242 | /** | |
2243 | * il_restore_stations() - Restore driver known stations to device | |
2244 | * | |
2245 | * All stations considered active by driver, but not present in ucode, is | |
2246 | * restored. | |
2247 | * | |
2248 | * Function sleeps. | |
2249 | */ | |
2250 | void | |
83007196 | 2251 | il_restore_stations(struct il_priv *il) |
0cdc2136 SG |
2252 | { |
2253 | struct il_addsta_cmd sta_cmd; | |
2254 | struct il_link_quality_cmd lq; | |
2255 | unsigned long flags_spin; | |
2256 | int i; | |
2257 | bool found = false; | |
2258 | int ret; | |
2259 | bool send_lq; | |
2260 | ||
2261 | if (!il_is_ready(il)) { | |
e7392364 | 2262 | D_INFO("Not ready yet, not restoring any stations.\n"); |
0cdc2136 SG |
2263 | return; |
2264 | } | |
2265 | ||
2266 | D_ASSOC("Restoring all known stations ... start.\n"); | |
2267 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2268 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
0cdc2136 SG |
2269 | if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) && |
2270 | !(il->stations[i].used & IL_STA_UCODE_ACTIVE)) { | |
2271 | D_ASSOC("Restoring sta %pM\n", | |
e7392364 | 2272 | il->stations[i].sta.sta.addr); |
0cdc2136 SG |
2273 | il->stations[i].sta.mode = 0; |
2274 | il->stations[i].used |= IL_STA_UCODE_INPROGRESS; | |
2275 | found = true; | |
2276 | } | |
2277 | } | |
2278 | ||
2279 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
2280 | if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) { | |
2281 | memcpy(&sta_cmd, &il->stations[i].sta, | |
2282 | sizeof(struct il_addsta_cmd)); | |
2283 | send_lq = false; | |
2284 | if (il->stations[i].lq) { | |
2285 | memcpy(&lq, il->stations[i].lq, | |
2286 | sizeof(struct il_link_quality_cmd)); | |
2287 | send_lq = true; | |
2288 | } | |
2289 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2290 | ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC); | |
2291 | if (ret) { | |
2292 | spin_lock_irqsave(&il->sta_lock, flags_spin); | |
2293 | IL_ERR("Adding station %pM failed.\n", | |
e7392364 SG |
2294 | il->stations[i].sta.sta.addr); |
2295 | il->stations[i].used &= ~IL_STA_DRIVER_ACTIVE; | |
0cdc2136 | 2296 | il->stations[i].used &= |
e7392364 | 2297 | ~IL_STA_UCODE_INPROGRESS; |
0cdc2136 | 2298 | spin_unlock_irqrestore(&il->sta_lock, |
e7392364 | 2299 | flags_spin); |
0cdc2136 SG |
2300 | } |
2301 | /* | |
2302 | * Rate scaling has already been initialized, send | |
2303 | * current LQ command | |
2304 | */ | |
2305 | if (send_lq) | |
83007196 | 2306 | il_send_lq_cmd(il, &lq, CMD_SYNC, true); |
0cdc2136 SG |
2307 | spin_lock_irqsave(&il->sta_lock, flags_spin); |
2308 | il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS; | |
2309 | } | |
2310 | } | |
2311 | ||
2312 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2313 | if (!found) | |
2314 | D_INFO("Restoring all known stations" | |
e7392364 | 2315 | " .... no stations to be restored.\n"); |
0cdc2136 | 2316 | else |
e7392364 | 2317 | D_INFO("Restoring all known stations" " .... complete.\n"); |
0cdc2136 SG |
2318 | } |
2319 | EXPORT_SYMBOL(il_restore_stations); | |
2320 | ||
e7392364 SG |
2321 | int |
2322 | il_get_free_ucode_key_idx(struct il_priv *il) | |
0cdc2136 SG |
2323 | { |
2324 | int i; | |
2325 | ||
2326 | for (i = 0; i < il->sta_key_max_num; i++) | |
2327 | if (!test_and_set_bit(i, &il->ucode_key_table)) | |
2328 | return i; | |
2329 | ||
2330 | return WEP_INVALID_OFFSET; | |
2331 | } | |
2332 | EXPORT_SYMBOL(il_get_free_ucode_key_idx); | |
2333 | ||
e7392364 SG |
2334 | void |
2335 | il_dealloc_bcast_stations(struct il_priv *il) | |
0cdc2136 SG |
2336 | { |
2337 | unsigned long flags; | |
2338 | int i; | |
2339 | ||
2340 | spin_lock_irqsave(&il->sta_lock, flags); | |
2341 | for (i = 0; i < il->hw_params.max_stations; i++) { | |
2342 | if (!(il->stations[i].used & IL_STA_BCAST)) | |
2343 | continue; | |
2344 | ||
2345 | il->stations[i].used &= ~IL_STA_UCODE_ACTIVE; | |
2346 | il->num_stations--; | |
2347 | BUG_ON(il->num_stations < 0); | |
2348 | kfree(il->stations[i].lq); | |
2349 | il->stations[i].lq = NULL; | |
2350 | } | |
2351 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
2352 | } | |
2353 | EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations); | |
2354 | ||
2355 | #ifdef CONFIG_IWLEGACY_DEBUG | |
e7392364 SG |
2356 | static void |
2357 | il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) | |
0cdc2136 SG |
2358 | { |
2359 | int i; | |
2360 | D_RATE("lq station id 0x%x\n", lq->sta_id); | |
e7392364 SG |
2361 | D_RATE("lq ant 0x%X 0x%X\n", lq->general_params.single_stream_ant_msk, |
2362 | lq->general_params.dual_stream_ant_msk); | |
0cdc2136 SG |
2363 | |
2364 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
e7392364 | 2365 | D_RATE("lq idx %d 0x%X\n", i, lq->rs_table[i].rate_n_flags); |
0cdc2136 SG |
2366 | } |
2367 | #else | |
e7392364 SG |
2368 | static inline void |
2369 | il_dump_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq) | |
0cdc2136 SG |
2370 | { |
2371 | } | |
2372 | #endif | |
2373 | ||
2374 | /** | |
2375 | * il_is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
2376 | * | |
2377 | * It sometimes happens when a HT rate has been in use and we | |
2378 | * loose connectivity with AP then mac80211 will first tell us that the | |
2379 | * current channel is not HT anymore before removing the station. In such a | |
2380 | * scenario the RXON flags will be updated to indicate we are not | |
2381 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
2382 | * Test for this to prevent driver from sending LQ command between the time | |
2383 | * RXON flags are updated and when LQ command is updated. | |
2384 | */ | |
e7392364 | 2385 | static bool |
83007196 | 2386 | il_is_lq_table_valid(struct il_priv *il, struct il_link_quality_cmd *lq) |
0cdc2136 SG |
2387 | { |
2388 | int i; | |
2389 | ||
1c03c462 | 2390 | if (il->ht.enabled) |
0cdc2136 SG |
2391 | return true; |
2392 | ||
c8b03958 | 2393 | D_INFO("Channel %u is not an HT channel\n", il->active.channel); |
0cdc2136 | 2394 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
e7392364 SG |
2395 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) { |
2396 | D_INFO("idx %d of LQ expects HT channel\n", i); | |
0cdc2136 SG |
2397 | return false; |
2398 | } | |
2399 | } | |
2400 | return true; | |
2401 | } | |
2402 | ||
2403 | /** | |
2404 | * il_send_lq_cmd() - Send link quality command | |
2405 | * @init: This command is sent as part of station initialization right | |
2406 | * after station has been added. | |
2407 | * | |
2408 | * The link quality command is sent as the last step of station creation. | |
2409 | * This is the special case in which init is set and we call a callback in | |
2410 | * this case to clear the state indicating that station creation is in | |
2411 | * progress. | |
2412 | */ | |
e7392364 | 2413 | int |
83007196 SG |
2414 | il_send_lq_cmd(struct il_priv *il, struct il_link_quality_cmd *lq, |
2415 | u8 flags, bool init) | |
0cdc2136 SG |
2416 | { |
2417 | int ret = 0; | |
2418 | unsigned long flags_spin; | |
2419 | ||
2420 | struct il_host_cmd cmd = { | |
2421 | .id = C_TX_LINK_QUALITY_CMD, | |
2422 | .len = sizeof(struct il_link_quality_cmd), | |
2423 | .flags = flags, | |
2424 | .data = lq, | |
2425 | }; | |
2426 | ||
2427 | if (WARN_ON(lq->sta_id == IL_INVALID_STATION)) | |
2428 | return -EINVAL; | |
2429 | ||
0cdc2136 SG |
2430 | spin_lock_irqsave(&il->sta_lock, flags_spin); |
2431 | if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) { | |
2432 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2433 | return -EINVAL; | |
2434 | } | |
2435 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2436 | ||
2437 | il_dump_lq_cmd(il, lq); | |
2438 | BUG_ON(init && (cmd.flags & CMD_ASYNC)); | |
2439 | ||
83007196 | 2440 | if (il_is_lq_table_valid(il, lq)) |
0cdc2136 SG |
2441 | ret = il_send_cmd(il, &cmd); |
2442 | else | |
2443 | ret = -EINVAL; | |
2444 | ||
2445 | if (cmd.flags & CMD_ASYNC) | |
2446 | return ret; | |
2447 | ||
2448 | if (init) { | |
2449 | D_INFO("init LQ command complete," | |
e7392364 SG |
2450 | " clearing sta addition status for sta %d\n", |
2451 | lq->sta_id); | |
0cdc2136 SG |
2452 | spin_lock_irqsave(&il->sta_lock, flags_spin); |
2453 | il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS; | |
2454 | spin_unlock_irqrestore(&il->sta_lock, flags_spin); | |
2455 | } | |
2456 | return ret; | |
2457 | } | |
2458 | EXPORT_SYMBOL(il_send_lq_cmd); | |
2459 | ||
e7392364 SG |
2460 | int |
2461 | il_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
2462 | struct ieee80211_sta *sta) | |
0cdc2136 SG |
2463 | { |
2464 | struct il_priv *il = hw->priv; | |
2465 | struct il_station_priv_common *sta_common = (void *)sta->drv_priv; | |
2466 | int ret; | |
2467 | ||
0cdc2136 | 2468 | mutex_lock(&il->mutex); |
9ce7b73c SG |
2469 | D_MAC80211("enter station %pM\n", sta->addr); |
2470 | ||
0cdc2136 SG |
2471 | ret = il_remove_station(il, sta_common->sta_id, sta->addr); |
2472 | if (ret) | |
e7392364 | 2473 | IL_ERR("Error removing station %pM\n", sta->addr); |
9ce7b73c SG |
2474 | |
2475 | D_MAC80211("leave ret %d\n", ret); | |
0cdc2136 | 2476 | mutex_unlock(&il->mutex); |
9ce7b73c | 2477 | |
0cdc2136 SG |
2478 | return ret; |
2479 | } | |
2480 | EXPORT_SYMBOL(il_mac_sta_remove); | |
2481 | ||
2482 | /************************** RX-FUNCTIONS ****************************/ | |
2483 | /* | |
2484 | * Rx theory of operation | |
2485 | * | |
2486 | * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs), | |
2487 | * each of which point to Receive Buffers to be filled by the NIC. These get | |
2488 | * used not only for Rx frames, but for any command response or notification | |
2489 | * from the NIC. The driver and NIC manage the Rx buffers by means | |
2490 | * of idxes into the circular buffer. | |
2491 | * | |
2492 | * Rx Queue Indexes | |
2493 | * The host/firmware share two idx registers for managing the Rx buffers. | |
2494 | * | |
2495 | * The READ idx maps to the first position that the firmware may be writing | |
2496 | * to -- the driver can read up to (but not including) this position and get | |
2497 | * good data. | |
2498 | * The READ idx is managed by the firmware once the card is enabled. | |
2499 | * | |
2500 | * The WRITE idx maps to the last position the driver has read from -- the | |
2501 | * position preceding WRITE is the last slot the firmware can place a packet. | |
2502 | * | |
2503 | * The queue is empty (no good data) if WRITE = READ - 1, and is full if | |
2504 | * WRITE = READ. | |
2505 | * | |
2506 | * During initialization, the host sets up the READ queue position to the first | |
2507 | * IDX position, and WRITE to the last (READ - 1 wrapped) | |
2508 | * | |
2509 | * When the firmware places a packet in a buffer, it will advance the READ idx | |
2510 | * and fire the RX interrupt. The driver can then query the READ idx and | |
2511 | * process as many packets as possible, moving the WRITE idx forward as it | |
2512 | * resets the Rx queue buffers with new memory. | |
2513 | * | |
2514 | * The management in the driver is as follows: | |
2515 | * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When | |
2516 | * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled | |
2517 | * to replenish the iwl->rxq->rx_free. | |
2518 | * + In il_rx_replenish (scheduled) if 'processed' != 'read' then the | |
2519 | * iwl->rxq is replenished and the READ IDX is updated (updating the | |
2520 | * 'processed' and 'read' driver idxes as well) | |
2521 | * + A received packet is processed and handed to the kernel network stack, | |
2522 | * detached from the iwl->rxq. The driver 'processed' idx is updated. | |
2523 | * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free | |
2524 | * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ | |
2525 | * IDX is not incremented and iwl->status(RX_STALLED) is set. If there | |
2526 | * were enough free buffers and RX_STALLED is set it is cleared. | |
2527 | * | |
2528 | * | |
2529 | * Driver sequence: | |
2530 | * | |
2531 | * il_rx_queue_alloc() Allocates rx_free | |
2532 | * il_rx_replenish() Replenishes rx_free list from rx_used, and calls | |
2533 | * il_rx_queue_restock | |
2534 | * il_rx_queue_restock() Moves available buffers from rx_free into Rx | |
2535 | * queue, updates firmware pointers, and updates | |
2536 | * the WRITE idx. If insufficient rx_free buffers | |
2537 | * are available, schedules il_rx_replenish | |
2538 | * | |
2539 | * -- enable interrupts -- | |
2540 | * ISR - il_rx() Detach il_rx_bufs from pool up to the | |
2541 | * READ IDX, detaching the SKB from the pool. | |
2542 | * Moves the packet buffer from queue to rx_used. | |
2543 | * Calls il_rx_queue_restock to refill any empty | |
2544 | * slots. | |
2545 | * ... | |
2546 | * | |
2547 | */ | |
2548 | ||
2549 | /** | |
2550 | * il_rx_queue_space - Return number of free slots available in queue. | |
2551 | */ | |
e7392364 SG |
2552 | int |
2553 | il_rx_queue_space(const struct il_rx_queue *q) | |
0cdc2136 SG |
2554 | { |
2555 | int s = q->read - q->write; | |
2556 | if (s <= 0) | |
2557 | s += RX_QUEUE_SIZE; | |
2558 | /* keep some buffer to not confuse full and empty queue */ | |
2559 | s -= 2; | |
2560 | if (s < 0) | |
2561 | s = 0; | |
2562 | return s; | |
2563 | } | |
2564 | EXPORT_SYMBOL(il_rx_queue_space); | |
2565 | ||
2566 | /** | |
2567 | * il_rx_queue_update_write_ptr - Update the write pointer for the RX queue | |
2568 | */ | |
2569 | void | |
e7392364 | 2570 | il_rx_queue_update_write_ptr(struct il_priv *il, struct il_rx_queue *q) |
0cdc2136 SG |
2571 | { |
2572 | unsigned long flags; | |
2573 | u32 rx_wrt_ptr_reg = il->hw_params.rx_wrt_ptr_reg; | |
2574 | u32 reg; | |
2575 | ||
2576 | spin_lock_irqsave(&q->lock, flags); | |
2577 | ||
2578 | if (q->need_update == 0) | |
2579 | goto exit_unlock; | |
2580 | ||
2581 | /* If power-saving is in use, make sure device is awake */ | |
2582 | if (test_bit(S_POWER_PMI, &il->status)) { | |
2583 | reg = _il_rd(il, CSR_UCODE_DRV_GP1); | |
2584 | ||
2585 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
e7392364 SG |
2586 | D_INFO("Rx queue requesting wakeup," " GP1 = 0x%x\n", |
2587 | reg); | |
0cdc2136 | 2588 | il_set_bit(il, CSR_GP_CNTRL, |
e7392364 | 2589 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
0cdc2136 SG |
2590 | goto exit_unlock; |
2591 | } | |
2592 | ||
2593 | q->write_actual = (q->write & ~0x7); | |
e7392364 | 2594 | il_wr(il, rx_wrt_ptr_reg, q->write_actual); |
0cdc2136 | 2595 | |
e7392364 | 2596 | /* Else device is assumed to be awake */ |
0cdc2136 SG |
2597 | } else { |
2598 | /* Device expects a multiple of 8 */ | |
2599 | q->write_actual = (q->write & ~0x7); | |
e7392364 | 2600 | il_wr(il, rx_wrt_ptr_reg, q->write_actual); |
0cdc2136 SG |
2601 | } |
2602 | ||
2603 | q->need_update = 0; | |
2604 | ||
e7392364 | 2605 | exit_unlock: |
0cdc2136 SG |
2606 | spin_unlock_irqrestore(&q->lock, flags); |
2607 | } | |
2608 | EXPORT_SYMBOL(il_rx_queue_update_write_ptr); | |
2609 | ||
e7392364 SG |
2610 | int |
2611 | il_rx_queue_alloc(struct il_priv *il) | |
0cdc2136 SG |
2612 | { |
2613 | struct il_rx_queue *rxq = &il->rxq; | |
2614 | struct device *dev = &il->pci_dev->dev; | |
2615 | int i; | |
2616 | ||
2617 | spin_lock_init(&rxq->lock); | |
2618 | INIT_LIST_HEAD(&rxq->rx_free); | |
2619 | INIT_LIST_HEAD(&rxq->rx_used); | |
2620 | ||
2621 | /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */ | |
1f9061d2 JP |
2622 | rxq->bd = dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->bd_dma, |
2623 | GFP_KERNEL); | |
0cdc2136 SG |
2624 | if (!rxq->bd) |
2625 | goto err_bd; | |
2626 | ||
1f9061d2 JP |
2627 | rxq->rb_stts = dma_alloc_coherent(dev, sizeof(struct il_rb_status), |
2628 | &rxq->rb_stts_dma, GFP_KERNEL); | |
0cdc2136 SG |
2629 | if (!rxq->rb_stts) |
2630 | goto err_rb; | |
2631 | ||
2632 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
2633 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) | |
2634 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
2635 | ||
2636 | /* Set us so that we have processed and used all buffers, but have | |
2637 | * not restocked the Rx queue with fresh buffers */ | |
2638 | rxq->read = rxq->write = 0; | |
2639 | rxq->write_actual = 0; | |
2640 | rxq->free_count = 0; | |
2641 | rxq->need_update = 0; | |
2642 | return 0; | |
2643 | ||
2644 | err_rb: | |
2645 | dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, | |
2646 | rxq->bd_dma); | |
2647 | err_bd: | |
2648 | return -ENOMEM; | |
2649 | } | |
e7392364 | 2650 | EXPORT_SYMBOL(il_rx_queue_alloc); |
0cdc2136 | 2651 | |
e7392364 SG |
2652 | void |
2653 | il_hdl_spectrum_measurement(struct il_priv *il, struct il_rx_buf *rxb) | |
0cdc2136 SG |
2654 | { |
2655 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
2656 | struct il_spectrum_notification *report = &(pkt->u.spectrum_notif); | |
2657 | ||
2658 | if (!report->state) { | |
e7392364 | 2659 | D_11H("Spectrum Measure Notification: Start\n"); |
0cdc2136 SG |
2660 | return; |
2661 | } | |
2662 | ||
2663 | memcpy(&il->measure_report, report, sizeof(*report)); | |
2664 | il->measurement_status |= MEASUREMENT_READY; | |
2665 | } | |
2666 | EXPORT_SYMBOL(il_hdl_spectrum_measurement); | |
2667 | ||
2668 | /* | |
2669 | * returns non-zero if packet should be dropped | |
2670 | */ | |
e7392364 SG |
2671 | int |
2672 | il_set_decrypted_flag(struct il_priv *il, struct ieee80211_hdr *hdr, | |
2673 | u32 decrypt_res, struct ieee80211_rx_status *stats) | |
0cdc2136 SG |
2674 | { |
2675 | u16 fc = le16_to_cpu(hdr->frame_control); | |
2676 | ||
2677 | /* | |
2678 | * All contexts have the same setting here due to it being | |
2679 | * a module parameter, so OK to check any context. | |
2680 | */ | |
c8b03958 | 2681 | if (il->active.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK) |
0cdc2136 SG |
2682 | return 0; |
2683 | ||
2684 | if (!(fc & IEEE80211_FCTL_PROTECTED)) | |
2685 | return 0; | |
2686 | ||
2687 | D_RX("decrypt_res:0x%x\n", decrypt_res); | |
2688 | switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { | |
2689 | case RX_RES_STATUS_SEC_TYPE_TKIP: | |
2690 | /* The uCode has got a bad phase 1 Key, pushes the packet. | |
2691 | * Decryption will be done in SW. */ | |
2692 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
2693 | RX_RES_STATUS_BAD_KEY_TTAK) | |
2694 | break; | |
2695 | ||
2696 | case RX_RES_STATUS_SEC_TYPE_WEP: | |
2697 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
2698 | RX_RES_STATUS_BAD_ICV_MIC) { | |
2699 | /* bad ICV, the packet is destroyed since the | |
2700 | * decryption is inplace, drop it */ | |
2701 | D_RX("Packet destroyed\n"); | |
2702 | return -1; | |
2703 | } | |
2704 | case RX_RES_STATUS_SEC_TYPE_CCMP: | |
2705 | if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == | |
2706 | RX_RES_STATUS_DECRYPT_OK) { | |
2707 | D_RX("hw decrypt successfully!!!\n"); | |
2708 | stats->flag |= RX_FLAG_DECRYPTED; | |
2709 | } | |
2710 | break; | |
2711 | ||
2712 | default: | |
2713 | break; | |
2714 | } | |
2715 | return 0; | |
2716 | } | |
2717 | EXPORT_SYMBOL(il_set_decrypted_flag); | |
2718 | ||
2719 | /** | |
2720 | * il_txq_update_write_ptr - Send new write idx to hardware | |
2721 | */ | |
2722 | void | |
2723 | il_txq_update_write_ptr(struct il_priv *il, struct il_tx_queue *txq) | |
2724 | { | |
2725 | u32 reg = 0; | |
2726 | int txq_id = txq->q.id; | |
2727 | ||
2728 | if (txq->need_update == 0) | |
2729 | return; | |
2730 | ||
2731 | /* if we're trying to save power */ | |
2732 | if (test_bit(S_POWER_PMI, &il->status)) { | |
2733 | /* wake up nic if it's powered down ... | |
2734 | * uCode will wake up, and interrupt us again, so next | |
2735 | * time we'll skip this part. */ | |
2736 | reg = _il_rd(il, CSR_UCODE_DRV_GP1); | |
2737 | ||
2738 | if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { | |
e7392364 SG |
2739 | D_INFO("Tx queue %d requesting wakeup," " GP1 = 0x%x\n", |
2740 | txq_id, reg); | |
0cdc2136 | 2741 | il_set_bit(il, CSR_GP_CNTRL, |
e7392364 | 2742 | CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
0cdc2136 SG |
2743 | return; |
2744 | } | |
2745 | ||
e7392364 | 2746 | il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); |
0cdc2136 SG |
2747 | |
2748 | /* | |
2749 | * else not in power-save mode, | |
2750 | * uCode will never sleep when we're | |
2751 | * trying to tx (during RFKILL, we're not trying to tx). | |
2752 | */ | |
2753 | } else | |
e7392364 | 2754 | _il_wr(il, HBUS_TARG_WRPTR, txq->q.write_ptr | (txq_id << 8)); |
0cdc2136 SG |
2755 | txq->need_update = 0; |
2756 | } | |
2757 | EXPORT_SYMBOL(il_txq_update_write_ptr); | |
2758 | ||
2759 | /** | |
2760 | * il_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's | |
2761 | */ | |
e7392364 SG |
2762 | void |
2763 | il_tx_queue_unmap(struct il_priv *il, int txq_id) | |
0cdc2136 SG |
2764 | { |
2765 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
2766 | struct il_queue *q = &txq->q; | |
2767 | ||
2768 | if (q->n_bd == 0) | |
2769 | return; | |
2770 | ||
2771 | while (q->write_ptr != q->read_ptr) { | |
1600b875 | 2772 | il->ops->txq_free_tfd(il, txq); |
0cdc2136 SG |
2773 | q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); |
2774 | } | |
2775 | } | |
2776 | EXPORT_SYMBOL(il_tx_queue_unmap); | |
2777 | ||
2778 | /** | |
2779 | * il_tx_queue_free - Deallocate DMA queue. | |
2780 | * @txq: Transmit queue to deallocate. | |
2781 | * | |
2782 | * Empty queue by removing and destroying all BD's. | |
2783 | * Free all buffers. | |
2784 | * 0-fill, but do not free "txq" descriptor structure. | |
2785 | */ | |
e7392364 SG |
2786 | void |
2787 | il_tx_queue_free(struct il_priv *il, int txq_id) | |
0cdc2136 SG |
2788 | { |
2789 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
2790 | struct device *dev = &il->pci_dev->dev; | |
2791 | int i; | |
2792 | ||
2793 | il_tx_queue_unmap(il, txq_id); | |
2794 | ||
2795 | /* De-alloc array of command/tx buffers */ | |
2796 | for (i = 0; i < TFD_TX_CMD_SLOTS; i++) | |
2797 | kfree(txq->cmd[i]); | |
2798 | ||
2799 | /* De-alloc circular buffer of TFDs */ | |
2800 | if (txq->q.n_bd) | |
e7392364 SG |
2801 | dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, |
2802 | txq->tfds, txq->q.dma_addr); | |
0cdc2136 SG |
2803 | |
2804 | /* De-alloc array of per-TFD driver data */ | |
00ea99e1 SG |
2805 | kfree(txq->skbs); |
2806 | txq->skbs = NULL; | |
0cdc2136 SG |
2807 | |
2808 | /* deallocate arrays */ | |
2809 | kfree(txq->cmd); | |
2810 | kfree(txq->meta); | |
2811 | txq->cmd = NULL; | |
2812 | txq->meta = NULL; | |
2813 | ||
2814 | /* 0-fill queue descriptor structure */ | |
2815 | memset(txq, 0, sizeof(*txq)); | |
2816 | } | |
2817 | EXPORT_SYMBOL(il_tx_queue_free); | |
2818 | ||
2819 | /** | |
2820 | * il_cmd_queue_unmap - Unmap any remaining DMA mappings from command queue | |
2821 | */ | |
e7392364 SG |
2822 | void |
2823 | il_cmd_queue_unmap(struct il_priv *il) | |
0cdc2136 SG |
2824 | { |
2825 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
2826 | struct il_queue *q = &txq->q; | |
2827 | int i; | |
2828 | ||
2829 | if (q->n_bd == 0) | |
2830 | return; | |
2831 | ||
2832 | while (q->read_ptr != q->write_ptr) { | |
2833 | i = il_get_cmd_idx(q, q->read_ptr, 0); | |
2834 | ||
2835 | if (txq->meta[i].flags & CMD_MAPPED) { | |
2836 | pci_unmap_single(il->pci_dev, | |
2837 | dma_unmap_addr(&txq->meta[i], mapping), | |
2838 | dma_unmap_len(&txq->meta[i], len), | |
2839 | PCI_DMA_BIDIRECTIONAL); | |
2840 | txq->meta[i].flags = 0; | |
2841 | } | |
2842 | ||
2843 | q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd); | |
2844 | } | |
2845 | ||
2846 | i = q->n_win; | |
2847 | if (txq->meta[i].flags & CMD_MAPPED) { | |
2848 | pci_unmap_single(il->pci_dev, | |
2849 | dma_unmap_addr(&txq->meta[i], mapping), | |
2850 | dma_unmap_len(&txq->meta[i], len), | |
2851 | PCI_DMA_BIDIRECTIONAL); | |
2852 | txq->meta[i].flags = 0; | |
2853 | } | |
2854 | } | |
2855 | EXPORT_SYMBOL(il_cmd_queue_unmap); | |
2856 | ||
2857 | /** | |
2858 | * il_cmd_queue_free - Deallocate DMA queue. | |
2859 | * @txq: Transmit queue to deallocate. | |
2860 | * | |
2861 | * Empty queue by removing and destroying all BD's. | |
2862 | * Free all buffers. | |
2863 | * 0-fill, but do not free "txq" descriptor structure. | |
2864 | */ | |
e7392364 SG |
2865 | void |
2866 | il_cmd_queue_free(struct il_priv *il) | |
0cdc2136 SG |
2867 | { |
2868 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
2869 | struct device *dev = &il->pci_dev->dev; | |
2870 | int i; | |
2871 | ||
2872 | il_cmd_queue_unmap(il); | |
2873 | ||
2874 | /* De-alloc array of command/tx buffers */ | |
2875 | for (i = 0; i <= TFD_CMD_SLOTS; i++) | |
2876 | kfree(txq->cmd[i]); | |
2877 | ||
2878 | /* De-alloc circular buffer of TFDs */ | |
2879 | if (txq->q.n_bd) | |
2880 | dma_free_coherent(dev, il->hw_params.tfd_size * txq->q.n_bd, | |
2881 | txq->tfds, txq->q.dma_addr); | |
2882 | ||
2883 | /* deallocate arrays */ | |
2884 | kfree(txq->cmd); | |
2885 | kfree(txq->meta); | |
2886 | txq->cmd = NULL; | |
2887 | txq->meta = NULL; | |
2888 | ||
2889 | /* 0-fill queue descriptor structure */ | |
2890 | memset(txq, 0, sizeof(*txq)); | |
2891 | } | |
2892 | EXPORT_SYMBOL(il_cmd_queue_free); | |
2893 | ||
2894 | /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** | |
2895 | * DMA services | |
2896 | * | |
2897 | * Theory of operation | |
2898 | * | |
2899 | * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer | |
2900 | * of buffer descriptors, each of which points to one or more data buffers for | |
2901 | * the device to read from or fill. Driver and device exchange status of each | |
2902 | * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty | |
2903 | * entries in each circular buffer, to protect against confusing empty and full | |
2904 | * queue states. | |
2905 | * | |
2906 | * The device reads or writes the data in the queues via the device's several | |
2907 | * DMA/FIFO channels. Each queue is mapped to a single DMA channel. | |
2908 | * | |
2909 | * For Tx queue, there are low mark and high mark limits. If, after queuing | |
2910 | * the packet for Tx, free space become < low mark, Tx queue stopped. When | |
2911 | * reclaiming packets (on 'tx done IRQ), if free space become > high mark, | |
2912 | * Tx queue resumed. | |
2913 | * | |
2914 | * See more detailed info in 4965.h. | |
2915 | ***************************************************/ | |
2916 | ||
e7392364 SG |
2917 | int |
2918 | il_queue_space(const struct il_queue *q) | |
0cdc2136 SG |
2919 | { |
2920 | int s = q->read_ptr - q->write_ptr; | |
2921 | ||
2922 | if (q->read_ptr > q->write_ptr) | |
2923 | s -= q->n_bd; | |
2924 | ||
2925 | if (s <= 0) | |
2926 | s += q->n_win; | |
2927 | /* keep some reserve to not confuse empty and full situations */ | |
2928 | s -= 2; | |
2929 | if (s < 0) | |
2930 | s = 0; | |
2931 | return s; | |
2932 | } | |
2933 | EXPORT_SYMBOL(il_queue_space); | |
2934 | ||
2935 | ||
2936 | /** | |
2937 | * il_queue_init - Initialize queue's high/low-water and read/write idxes | |
2938 | */ | |
e7392364 | 2939 | static int |
d87c771f | 2940 | il_queue_init(struct il_priv *il, struct il_queue *q, int slots, u32 id) |
0cdc2136 | 2941 | { |
d87c771f SG |
2942 | /* |
2943 | * TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise | |
2944 | * il_queue_inc_wrap and il_queue_dec_wrap are broken. | |
2945 | */ | |
2946 | BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1)); | |
2947 | /* FIXME: remove q->n_bd */ | |
2948 | q->n_bd = TFD_QUEUE_SIZE_MAX; | |
0cdc2136 | 2949 | |
d87c771f SG |
2950 | q->n_win = slots; |
2951 | q->id = id; | |
0cdc2136 | 2952 | |
d87c771f | 2953 | /* slots_must be power-of-two size, otherwise |
0cdc2136 | 2954 | * il_get_cmd_idx is broken. */ |
d87c771f | 2955 | BUG_ON(!is_power_of_2(slots)); |
0cdc2136 SG |
2956 | |
2957 | q->low_mark = q->n_win / 4; | |
2958 | if (q->low_mark < 4) | |
2959 | q->low_mark = 4; | |
2960 | ||
2961 | q->high_mark = q->n_win / 8; | |
2962 | if (q->high_mark < 2) | |
2963 | q->high_mark = 2; | |
2964 | ||
2965 | q->write_ptr = q->read_ptr = 0; | |
2966 | ||
2967 | return 0; | |
2968 | } | |
2969 | ||
2970 | /** | |
2971 | * il_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue | |
2972 | */ | |
e7392364 SG |
2973 | static int |
2974 | il_tx_queue_alloc(struct il_priv *il, struct il_tx_queue *txq, u32 id) | |
0cdc2136 SG |
2975 | { |
2976 | struct device *dev = &il->pci_dev->dev; | |
2977 | size_t tfd_sz = il->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX; | |
2978 | ||
2979 | /* Driver ilate data, only for Tx (not command) queues, | |
2980 | * not shared with device. */ | |
2981 | if (id != il->cmd_queue) { | |
00ea99e1 SG |
2982 | txq->skbs = kcalloc(TFD_QUEUE_SIZE_MAX, sizeof(struct skb *), |
2983 | GFP_KERNEL); | |
2984 | if (!txq->skbs) { | |
2985 | IL_ERR("Fail to alloc skbs\n"); | |
0cdc2136 SG |
2986 | goto error; |
2987 | } | |
00ea99e1 SG |
2988 | } else |
2989 | txq->skbs = NULL; | |
0cdc2136 SG |
2990 | |
2991 | /* Circular buffer of transmit frame descriptors (TFDs), | |
2992 | * shared with device */ | |
e7392364 SG |
2993 | txq->tfds = |
2994 | dma_alloc_coherent(dev, tfd_sz, &txq->q.dma_addr, GFP_KERNEL); | |
d0320f75 | 2995 | if (!txq->tfds) |
0cdc2136 | 2996 | goto error; |
d0320f75 | 2997 | |
0cdc2136 SG |
2998 | txq->q.id = id; |
2999 | ||
3000 | return 0; | |
3001 | ||
e7392364 | 3002 | error: |
00ea99e1 SG |
3003 | kfree(txq->skbs); |
3004 | txq->skbs = NULL; | |
0cdc2136 SG |
3005 | |
3006 | return -ENOMEM; | |
3007 | } | |
3008 | ||
3009 | /** | |
3010 | * il_tx_queue_init - Allocate and initialize one tx/cmd queue | |
3011 | */ | |
e7392364 | 3012 | int |
d87c771f | 3013 | il_tx_queue_init(struct il_priv *il, u32 txq_id) |
0cdc2136 | 3014 | { |
d87c771f SG |
3015 | int i, len, ret; |
3016 | int slots, actual_slots; | |
3017 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
0cdc2136 SG |
3018 | |
3019 | /* | |
3020 | * Alloc buffer array for commands (Tx or other types of commands). | |
3021 | * For the command queue (#4/#9), allocate command space + one big | |
3022 | * command for scan, since scan command is very huge; the system will | |
3023 | * not have two scans at the same time, so only one is needed. | |
3024 | * For normal Tx queues (all other queues), no super-size command | |
3025 | * space is needed. | |
3026 | */ | |
d87c771f SG |
3027 | if (txq_id == il->cmd_queue) { |
3028 | slots = TFD_CMD_SLOTS; | |
3029 | actual_slots = slots + 1; | |
3030 | } else { | |
3031 | slots = TFD_TX_CMD_SLOTS; | |
3032 | actual_slots = slots; | |
3033 | } | |
0cdc2136 | 3034 | |
e7392364 SG |
3035 | txq->meta = |
3036 | kzalloc(sizeof(struct il_cmd_meta) * actual_slots, GFP_KERNEL); | |
3037 | txq->cmd = | |
3038 | kzalloc(sizeof(struct il_device_cmd *) * actual_slots, GFP_KERNEL); | |
0cdc2136 SG |
3039 | |
3040 | if (!txq->meta || !txq->cmd) | |
3041 | goto out_free_arrays; | |
3042 | ||
3043 | len = sizeof(struct il_device_cmd); | |
3044 | for (i = 0; i < actual_slots; i++) { | |
3045 | /* only happens for cmd queue */ | |
d87c771f | 3046 | if (i == slots) |
0cdc2136 SG |
3047 | len = IL_MAX_CMD_SIZE; |
3048 | ||
3049 | txq->cmd[i] = kmalloc(len, GFP_KERNEL); | |
3050 | if (!txq->cmd[i]) | |
3051 | goto err; | |
3052 | } | |
3053 | ||
3054 | /* Alloc driver data array and TFD circular buffer */ | |
3055 | ret = il_tx_queue_alloc(il, txq, txq_id); | |
3056 | if (ret) | |
3057 | goto err; | |
3058 | ||
3059 | txq->need_update = 0; | |
3060 | ||
3061 | /* | |
3062 | * For the default queues 0-3, set up the swq_id | |
3063 | * already -- all others need to get one later | |
3064 | * (if they need one at all). | |
3065 | */ | |
3066 | if (txq_id < 4) | |
3067 | il_set_swq_id(txq, txq_id, txq_id); | |
3068 | ||
0cdc2136 | 3069 | /* Initialize queue's high/low-water marks, and head/tail idxes */ |
d87c771f | 3070 | il_queue_init(il, &txq->q, slots, txq_id); |
0cdc2136 SG |
3071 | |
3072 | /* Tell device where to find queue */ | |
1600b875 | 3073 | il->ops->txq_init(il, txq); |
0cdc2136 SG |
3074 | |
3075 | return 0; | |
3076 | err: | |
3077 | for (i = 0; i < actual_slots; i++) | |
3078 | kfree(txq->cmd[i]); | |
3079 | out_free_arrays: | |
3080 | kfree(txq->meta); | |
3081 | kfree(txq->cmd); | |
3082 | ||
3083 | return -ENOMEM; | |
3084 | } | |
3085 | EXPORT_SYMBOL(il_tx_queue_init); | |
3086 | ||
e7392364 | 3087 | void |
d87c771f | 3088 | il_tx_queue_reset(struct il_priv *il, u32 txq_id) |
0cdc2136 | 3089 | { |
d87c771f SG |
3090 | int slots, actual_slots; |
3091 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
0cdc2136 | 3092 | |
d87c771f SG |
3093 | if (txq_id == il->cmd_queue) { |
3094 | slots = TFD_CMD_SLOTS; | |
3095 | actual_slots = TFD_CMD_SLOTS + 1; | |
3096 | } else { | |
3097 | slots = TFD_TX_CMD_SLOTS; | |
3098 | actual_slots = TFD_TX_CMD_SLOTS; | |
3099 | } | |
0cdc2136 SG |
3100 | |
3101 | memset(txq->meta, 0, sizeof(struct il_cmd_meta) * actual_slots); | |
0cdc2136 SG |
3102 | txq->need_update = 0; |
3103 | ||
3104 | /* Initialize queue's high/low-water marks, and head/tail idxes */ | |
d87c771f | 3105 | il_queue_init(il, &txq->q, slots, txq_id); |
0cdc2136 SG |
3106 | |
3107 | /* Tell device where to find queue */ | |
1600b875 | 3108 | il->ops->txq_init(il, txq); |
0cdc2136 SG |
3109 | } |
3110 | EXPORT_SYMBOL(il_tx_queue_reset); | |
3111 | ||
3112 | /*************** HOST COMMAND QUEUE FUNCTIONS *****/ | |
3113 | ||
3114 | /** | |
3115 | * il_enqueue_hcmd - enqueue a uCode command | |
3116 | * @il: device ilate data point | |
3117 | * @cmd: a point to the ucode command structure | |
3118 | * | |
3119 | * The function returns < 0 values to indicate the operation is | |
3120 | * failed. On success, it turns the idx (> 0) of command in the | |
3121 | * command queue. | |
3122 | */ | |
e7392364 SG |
3123 | int |
3124 | il_enqueue_hcmd(struct il_priv *il, struct il_host_cmd *cmd) | |
0cdc2136 SG |
3125 | { |
3126 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
3127 | struct il_queue *q = &txq->q; | |
3128 | struct il_device_cmd *out_cmd; | |
3129 | struct il_cmd_meta *out_meta; | |
3130 | dma_addr_t phys_addr; | |
3131 | unsigned long flags; | |
3132 | int len; | |
3133 | u32 idx; | |
3134 | u16 fix_size; | |
3135 | ||
c9363551 | 3136 | cmd->len = il->ops->get_hcmd_size(cmd->id, cmd->len); |
e7392364 | 3137 | fix_size = (u16) (cmd->len + sizeof(out_cmd->hdr)); |
0cdc2136 SG |
3138 | |
3139 | /* If any of the command structures end up being larger than | |
3140 | * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then | |
3141 | * we will need to increase the size of the TFD entries | |
3142 | * Also, check to see if command buffer should not exceed the size | |
3143 | * of device_cmd and max_cmd_size. */ | |
3144 | BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && | |
3145 | !(cmd->flags & CMD_SIZE_HUGE)); | |
3146 | BUG_ON(fix_size > IL_MAX_CMD_SIZE); | |
3147 | ||
3148 | if (il_is_rfkill(il) || il_is_ctkill(il)) { | |
3149 | IL_WARN("Not sending command - %s KILL\n", | |
e7392364 | 3150 | il_is_rfkill(il) ? "RF" : "CT"); |
0cdc2136 SG |
3151 | return -EIO; |
3152 | } | |
3153 | ||
3154 | spin_lock_irqsave(&il->hcmd_lock, flags); | |
3155 | ||
3156 | if (il_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) { | |
3157 | spin_unlock_irqrestore(&il->hcmd_lock, flags); | |
3158 | ||
3159 | IL_ERR("Restarting adapter due to command queue full\n"); | |
3160 | queue_work(il->workqueue, &il->restart); | |
3161 | return -ENOSPC; | |
3162 | } | |
3163 | ||
3164 | idx = il_get_cmd_idx(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE); | |
3165 | out_cmd = txq->cmd[idx]; | |
3166 | out_meta = &txq->meta[idx]; | |
3167 | ||
3168 | if (WARN_ON(out_meta->flags & CMD_MAPPED)) { | |
3169 | spin_unlock_irqrestore(&il->hcmd_lock, flags); | |
3170 | return -ENOSPC; | |
3171 | } | |
3172 | ||
3173 | memset(out_meta, 0, sizeof(*out_meta)); /* re-initialize to NULL */ | |
3174 | out_meta->flags = cmd->flags | CMD_MAPPED; | |
3175 | if (cmd->flags & CMD_WANT_SKB) | |
3176 | out_meta->source = cmd; | |
3177 | if (cmd->flags & CMD_ASYNC) | |
3178 | out_meta->callback = cmd->callback; | |
3179 | ||
3180 | out_cmd->hdr.cmd = cmd->id; | |
3181 | memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); | |
3182 | ||
3183 | /* At this point, the out_cmd now has all of the incoming cmd | |
3184 | * information */ | |
3185 | ||
3186 | out_cmd->hdr.flags = 0; | |
e7392364 SG |
3187 | out_cmd->hdr.sequence = |
3188 | cpu_to_le16(QUEUE_TO_SEQ(il->cmd_queue) | IDX_TO_SEQ(q->write_ptr)); | |
0cdc2136 SG |
3189 | if (cmd->flags & CMD_SIZE_HUGE) |
3190 | out_cmd->hdr.sequence |= SEQ_HUGE_FRAME; | |
3191 | len = sizeof(struct il_device_cmd); | |
3192 | if (idx == TFD_CMD_SLOTS) | |
3193 | len = IL_MAX_CMD_SIZE; | |
3194 | ||
3195 | #ifdef CONFIG_IWLEGACY_DEBUG | |
3196 | switch (out_cmd->hdr.cmd) { | |
3197 | case C_TX_LINK_QUALITY_CMD: | |
3198 | case C_SENSITIVITY: | |
e7392364 SG |
3199 | D_HC_DUMP("Sending command %s (#%x), seq: 0x%04X, " |
3200 | "%d bytes at %d[%d]:%d\n", | |
3201 | il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, | |
3202 | le16_to_cpu(out_cmd->hdr.sequence), fix_size, | |
3203 | q->write_ptr, idx, il->cmd_queue); | |
0cdc2136 SG |
3204 | break; |
3205 | default: | |
3206 | D_HC("Sending command %s (#%x), seq: 0x%04X, " | |
e7392364 SG |
3207 | "%d bytes at %d[%d]:%d\n", |
3208 | il_get_cmd_string(out_cmd->hdr.cmd), out_cmd->hdr.cmd, | |
3209 | le16_to_cpu(out_cmd->hdr.sequence), fix_size, q->write_ptr, | |
3210 | idx, il->cmd_queue); | |
0cdc2136 SG |
3211 | } |
3212 | #endif | |
0cdc2136 | 3213 | |
e7392364 SG |
3214 | phys_addr = |
3215 | pci_map_single(il->pci_dev, &out_cmd->hdr, fix_size, | |
3216 | PCI_DMA_BIDIRECTIONAL); | |
bdb084b2 SG |
3217 | if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) { |
3218 | idx = -ENOMEM; | |
3219 | goto out; | |
3220 | } | |
0cdc2136 SG |
3221 | dma_unmap_addr_set(out_meta, mapping, phys_addr); |
3222 | dma_unmap_len_set(out_meta, len, fix_size); | |
3223 | ||
bdb084b2 SG |
3224 | txq->need_update = 1; |
3225 | ||
3226 | if (il->ops->txq_update_byte_cnt_tbl) | |
3227 | /* Set up entry in queue's byte count circular buffer */ | |
3228 | il->ops->txq_update_byte_cnt_tbl(il, txq, 0); | |
3229 | ||
1600b875 | 3230 | il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, fix_size, 1, |
c39ae9fd | 3231 | U32_PAD(cmd->len)); |
0cdc2136 SG |
3232 | |
3233 | /* Increment and update queue's write idx */ | |
3234 | q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); | |
3235 | il_txq_update_write_ptr(il, txq); | |
3236 | ||
bdb084b2 | 3237 | out: |
0cdc2136 SG |
3238 | spin_unlock_irqrestore(&il->hcmd_lock, flags); |
3239 | return idx; | |
3240 | } | |
3241 | ||
3242 | /** | |
3243 | * il_hcmd_queue_reclaim - Reclaim TX command queue entries already Tx'd | |
3244 | * | |
3245 | * When FW advances 'R' idx, all entries between old and new 'R' idx | |
3246 | * need to be reclaimed. As result, some free space forms. If there is | |
3247 | * enough free space (> low mark), wake the stack that feeds us. | |
3248 | */ | |
e7392364 SG |
3249 | static void |
3250 | il_hcmd_queue_reclaim(struct il_priv *il, int txq_id, int idx, int cmd_idx) | |
0cdc2136 SG |
3251 | { |
3252 | struct il_tx_queue *txq = &il->txq[txq_id]; | |
3253 | struct il_queue *q = &txq->q; | |
3254 | int nfreed = 0; | |
3255 | ||
3256 | if (idx >= q->n_bd || il_queue_used(q, idx) == 0) { | |
3257 | IL_ERR("Read idx for DMA queue txq id (%d), idx %d, " | |
e7392364 SG |
3258 | "is out of range [0-%d] %d %d.\n", txq_id, idx, q->n_bd, |
3259 | q->write_ptr, q->read_ptr); | |
0cdc2136 SG |
3260 | return; |
3261 | } | |
3262 | ||
3263 | for (idx = il_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx; | |
3264 | q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) { | |
3265 | ||
3266 | if (nfreed++ > 0) { | |
3267 | IL_ERR("HCMD skipped: idx (%d) %d %d\n", idx, | |
e7392364 | 3268 | q->write_ptr, q->read_ptr); |
0cdc2136 SG |
3269 | queue_work(il->workqueue, &il->restart); |
3270 | } | |
3271 | ||
3272 | } | |
3273 | } | |
3274 | ||
3275 | /** | |
3276 | * il_tx_cmd_complete - Pull unused buffers off the queue and reclaim them | |
3277 | * @rxb: Rx buffer to reclaim | |
3278 | * | |
3279 | * If an Rx buffer has an async callback associated with it the callback | |
3280 | * will be executed. The attached skb (if present) will only be freed | |
3281 | * if the callback returns 1 | |
3282 | */ | |
3283 | void | |
3284 | il_tx_cmd_complete(struct il_priv *il, struct il_rx_buf *rxb) | |
3285 | { | |
3286 | struct il_rx_pkt *pkt = rxb_addr(rxb); | |
3287 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
3288 | int txq_id = SEQ_TO_QUEUE(sequence); | |
3289 | int idx = SEQ_TO_IDX(sequence); | |
3290 | int cmd_idx; | |
3291 | bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME); | |
3292 | struct il_device_cmd *cmd; | |
3293 | struct il_cmd_meta *meta; | |
3294 | struct il_tx_queue *txq = &il->txq[il->cmd_queue]; | |
3295 | unsigned long flags; | |
3296 | ||
3297 | /* If a Tx command is being handled and it isn't in the actual | |
3298 | * command queue then there a command routing bug has been introduced | |
3299 | * in the queue management code. */ | |
e7392364 SG |
3300 | if (WARN |
3301 | (txq_id != il->cmd_queue, | |
3302 | "wrong command queue %d (should be %d), sequence 0x%X readp=%d writep=%d\n", | |
3303 | txq_id, il->cmd_queue, sequence, il->txq[il->cmd_queue].q.read_ptr, | |
3304 | il->txq[il->cmd_queue].q.write_ptr)) { | |
0cdc2136 SG |
3305 | il_print_hex_error(il, pkt, 32); |
3306 | return; | |
3307 | } | |
3308 | ||
3309 | cmd_idx = il_get_cmd_idx(&txq->q, idx, huge); | |
3310 | cmd = txq->cmd[cmd_idx]; | |
3311 | meta = &txq->meta[cmd_idx]; | |
3312 | ||
3313 | txq->time_stamp = jiffies; | |
3314 | ||
e7392364 SG |
3315 | pci_unmap_single(il->pci_dev, dma_unmap_addr(meta, mapping), |
3316 | dma_unmap_len(meta, len), PCI_DMA_BIDIRECTIONAL); | |
0cdc2136 SG |
3317 | |
3318 | /* Input error checking is done when commands are added to queue. */ | |
3319 | if (meta->flags & CMD_WANT_SKB) { | |
3320 | meta->source->reply_page = (unsigned long)rxb_addr(rxb); | |
3321 | rxb->page = NULL; | |
3322 | } else if (meta->callback) | |
3323 | meta->callback(il, cmd, pkt); | |
3324 | ||
3325 | spin_lock_irqsave(&il->hcmd_lock, flags); | |
3326 | ||
3327 | il_hcmd_queue_reclaim(il, txq_id, idx, cmd_idx); | |
3328 | ||
3329 | if (!(meta->flags & CMD_ASYNC)) { | |
3330 | clear_bit(S_HCMD_ACTIVE, &il->status); | |
3331 | D_INFO("Clearing HCMD_ACTIVE for command %s\n", | |
e7392364 | 3332 | il_get_cmd_string(cmd->hdr.cmd)); |
0cdc2136 SG |
3333 | wake_up(&il->wait_command_queue); |
3334 | } | |
3335 | ||
3336 | /* Mark as unmapped */ | |
3337 | meta->flags = 0; | |
3338 | ||
3339 | spin_unlock_irqrestore(&il->hcmd_lock, flags); | |
3340 | } | |
3341 | EXPORT_SYMBOL(il_tx_cmd_complete); | |
be663ab6 WYG |
3342 | |
3343 | MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965"); | |
3344 | MODULE_VERSION(IWLWIFI_VERSION); | |
3345 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); | |
3346 | MODULE_LICENSE("GPL"); | |
3347 | ||
3348 | /* | |
3349 | * set bt_coex_active to true, uCode will do kill/defer | |
3350 | * every time the priority line is asserted (BT is sending signals on the | |
3351 | * priority line in the PCIx). | |
3352 | * set bt_coex_active to false, uCode will ignore the BT activity and | |
3353 | * perform the normal operation | |
3354 | * | |
3355 | * User might experience transmit issue on some platform due to WiFi/BT | |
3356 | * co-exist problem. The possible behaviors are: | |
3357 | * Able to scan and finding all the available AP | |
3358 | * Not able to associate with any AP | |
3359 | * On those platforms, WiFi communication can be restored by set | |
3360 | * "bt_coex_active" module parameter to "false" | |
3361 | * | |
3362 | * default: bt_coex_active = true (BT_COEX_ENABLE) | |
3363 | */ | |
ef33417d | 3364 | static bool bt_coex_active = true; |
be663ab6 WYG |
3365 | module_param(bt_coex_active, bool, S_IRUGO); |
3366 | MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); | |
3367 | ||
d2ddf621 SG |
3368 | u32 il_debug_level; |
3369 | EXPORT_SYMBOL(il_debug_level); | |
be663ab6 | 3370 | |
d2ddf621 | 3371 | const u8 il_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
e7392364 | 3372 | EXPORT_SYMBOL(il_bcast_addr); |
be663ab6 | 3373 | |
e7392364 SG |
3374 | #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
3375 | #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ | |
3376 | static void | |
3377 | il_init_ht_hw_capab(const struct il_priv *il, | |
3378 | struct ieee80211_sta_ht_cap *ht_info, | |
3379 | enum ieee80211_band band) | |
be663ab6 WYG |
3380 | { |
3381 | u16 max_bit_rate = 0; | |
46bc8d4b SG |
3382 | u8 rx_chains_num = il->hw_params.rx_chains_num; |
3383 | u8 tx_chains_num = il->hw_params.tx_chains_num; | |
be663ab6 WYG |
3384 | |
3385 | ht_info->cap = 0; | |
3386 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); | |
3387 | ||
3388 | ht_info->ht_supported = true; | |
3389 | ||
3390 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; | |
3391 | max_bit_rate = MAX_BIT_RATE_20_MHZ; | |
46bc8d4b | 3392 | if (il->hw_params.ht40_channel & BIT(band)) { |
be663ab6 WYG |
3393 | ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
3394 | ht_info->cap |= IEEE80211_HT_CAP_SGI_40; | |
3395 | ht_info->mcs.rx_mask[4] = 0x01; | |
3396 | max_bit_rate = MAX_BIT_RATE_40_MHZ; | |
3397 | } | |
3398 | ||
46bc8d4b | 3399 | if (il->cfg->mod_params->amsdu_size_8K) |
be663ab6 WYG |
3400 | ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
3401 | ||
3402 | ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; | |
3403 | ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; | |
3404 | ||
3405 | ht_info->mcs.rx_mask[0] = 0xFF; | |
3406 | if (rx_chains_num >= 2) | |
3407 | ht_info->mcs.rx_mask[1] = 0xFF; | |
3408 | if (rx_chains_num >= 3) | |
3409 | ht_info->mcs.rx_mask[2] = 0xFF; | |
3410 | ||
3411 | /* Highest supported Rx data rate */ | |
3412 | max_bit_rate *= rx_chains_num; | |
3413 | WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); | |
3414 | ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); | |
3415 | ||
3416 | /* Tx MCS capabilities */ | |
3417 | ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; | |
3418 | if (tx_chains_num != rx_chains_num) { | |
3419 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; | |
e7392364 SG |
3420 | ht_info->mcs.tx_params |= |
3421 | ((tx_chains_num - | |
3422 | 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); | |
be663ab6 WYG |
3423 | } |
3424 | } | |
3425 | ||
3426 | /** | |
e2ebc833 | 3427 | * il_init_geos - Initialize mac80211's geo/channel info based from eeprom |
be663ab6 | 3428 | */ |
e7392364 SG |
3429 | int |
3430 | il_init_geos(struct il_priv *il) | |
be663ab6 | 3431 | { |
e2ebc833 | 3432 | struct il_channel_info *ch; |
be663ab6 WYG |
3433 | struct ieee80211_supported_band *sband; |
3434 | struct ieee80211_channel *channels; | |
3435 | struct ieee80211_channel *geo_ch; | |
3436 | struct ieee80211_rate *rates; | |
3437 | int i = 0; | |
332704a5 | 3438 | s8 max_tx_power = 0; |
be663ab6 | 3439 | |
46bc8d4b SG |
3440 | if (il->bands[IEEE80211_BAND_2GHZ].n_bitrates || |
3441 | il->bands[IEEE80211_BAND_5GHZ].n_bitrates) { | |
58de00a4 | 3442 | D_INFO("Geography modes already initialized.\n"); |
a6766ccd | 3443 | set_bit(S_GEO_CONFIGURED, &il->status); |
be663ab6 WYG |
3444 | return 0; |
3445 | } | |
3446 | ||
e7392364 SG |
3447 | channels = |
3448 | kzalloc(sizeof(struct ieee80211_channel) * il->channel_count, | |
3449 | GFP_KERNEL); | |
be663ab6 WYG |
3450 | if (!channels) |
3451 | return -ENOMEM; | |
3452 | ||
e7392364 SG |
3453 | rates = |
3454 | kzalloc((sizeof(struct ieee80211_rate) * RATE_COUNT_LEGACY), | |
3455 | GFP_KERNEL); | |
be663ab6 WYG |
3456 | if (!rates) { |
3457 | kfree(channels); | |
3458 | return -ENOMEM; | |
3459 | } | |
3460 | ||
3461 | /* 5.2GHz channels start after the 2.4GHz channels */ | |
46bc8d4b | 3462 | sband = &il->bands[IEEE80211_BAND_5GHZ]; |
d2ddf621 | 3463 | sband->channels = &channels[ARRAY_SIZE(il_eeprom_band_1)]; |
be663ab6 | 3464 | /* just OFDM */ |
e2ebc833 | 3465 | sband->bitrates = &rates[IL_FIRST_OFDM_RATE]; |
2eb05816 | 3466 | sband->n_bitrates = RATE_COUNT_LEGACY - IL_FIRST_OFDM_RATE; |
be663ab6 | 3467 | |
46bc8d4b | 3468 | if (il->cfg->sku & IL_SKU_N) |
e7392364 | 3469 | il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_5GHZ); |
be663ab6 | 3470 | |
46bc8d4b | 3471 | sband = &il->bands[IEEE80211_BAND_2GHZ]; |
be663ab6 WYG |
3472 | sband->channels = channels; |
3473 | /* OFDM & CCK */ | |
3474 | sband->bitrates = rates; | |
2eb05816 | 3475 | sband->n_bitrates = RATE_COUNT_LEGACY; |
be663ab6 | 3476 | |
46bc8d4b | 3477 | if (il->cfg->sku & IL_SKU_N) |
e7392364 | 3478 | il_init_ht_hw_capab(il, &sband->ht_cap, IEEE80211_BAND_2GHZ); |
be663ab6 | 3479 | |
46bc8d4b SG |
3480 | il->ieee_channels = channels; |
3481 | il->ieee_rates = rates; | |
be663ab6 | 3482 | |
e7392364 | 3483 | for (i = 0; i < il->channel_count; i++) { |
46bc8d4b | 3484 | ch = &il->channel_info[i]; |
be663ab6 | 3485 | |
e2ebc833 | 3486 | if (!il_is_channel_valid(ch)) |
be663ab6 WYG |
3487 | continue; |
3488 | ||
46bc8d4b | 3489 | sband = &il->bands[ch->band]; |
be663ab6 WYG |
3490 | |
3491 | geo_ch = &sband->channels[sband->n_channels++]; | |
3492 | ||
3493 | geo_ch->center_freq = | |
e7392364 | 3494 | ieee80211_channel_to_frequency(ch->channel, ch->band); |
be663ab6 WYG |
3495 | geo_ch->max_power = ch->max_power_avg; |
3496 | geo_ch->max_antenna_gain = 0xff; | |
3497 | geo_ch->hw_value = ch->channel; | |
3498 | ||
e2ebc833 | 3499 | if (il_is_channel_valid(ch)) { |
be663ab6 | 3500 | if (!(ch->flags & EEPROM_CHANNEL_IBSS)) |
8fe02e16 | 3501 | geo_ch->flags |= IEEE80211_CHAN_NO_IR; |
be663ab6 WYG |
3502 | |
3503 | if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) | |
8fe02e16 | 3504 | geo_ch->flags |= IEEE80211_CHAN_NO_IR; |
be663ab6 WYG |
3505 | |
3506 | if (ch->flags & EEPROM_CHANNEL_RADAR) | |
3507 | geo_ch->flags |= IEEE80211_CHAN_RADAR; | |
3508 | ||
3509 | geo_ch->flags |= ch->ht40_extension_channel; | |
3510 | ||
332704a5 SG |
3511 | if (ch->max_power_avg > max_tx_power) |
3512 | max_tx_power = ch->max_power_avg; | |
be663ab6 WYG |
3513 | } else { |
3514 | geo_ch->flags |= IEEE80211_CHAN_DISABLED; | |
3515 | } | |
3516 | ||
e7392364 SG |
3517 | D_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel, |
3518 | geo_ch->center_freq, | |
3519 | il_is_channel_a_band(ch) ? "5.2" : "2.4", | |
3520 | geo_ch-> | |
3521 | flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid", | |
3522 | geo_ch->flags); | |
be663ab6 WYG |
3523 | } |
3524 | ||
46bc8d4b SG |
3525 | il->tx_power_device_lmt = max_tx_power; |
3526 | il->tx_power_user_lmt = max_tx_power; | |
3527 | il->tx_power_next = max_tx_power; | |
332704a5 | 3528 | |
232913b5 SG |
3529 | if (il->bands[IEEE80211_BAND_5GHZ].n_channels == 0 && |
3530 | (il->cfg->sku & IL_SKU_A)) { | |
9406f797 | 3531 | IL_INFO("Incorrectly detected BG card as ABG. " |
be663ab6 | 3532 | "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", |
e7392364 | 3533 | il->pci_dev->device, il->pci_dev->subsystem_device); |
46bc8d4b | 3534 | il->cfg->sku &= ~IL_SKU_A; |
be663ab6 WYG |
3535 | } |
3536 | ||
9406f797 | 3537 | IL_INFO("Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
e7392364 SG |
3538 | il->bands[IEEE80211_BAND_2GHZ].n_channels, |
3539 | il->bands[IEEE80211_BAND_5GHZ].n_channels); | |
be663ab6 | 3540 | |
a6766ccd | 3541 | set_bit(S_GEO_CONFIGURED, &il->status); |
be663ab6 WYG |
3542 | |
3543 | return 0; | |
3544 | } | |
e2ebc833 | 3545 | EXPORT_SYMBOL(il_init_geos); |
be663ab6 WYG |
3546 | |
3547 | /* | |
e2ebc833 | 3548 | * il_free_geos - undo allocations in il_init_geos |
be663ab6 | 3549 | */ |
e7392364 SG |
3550 | void |
3551 | il_free_geos(struct il_priv *il) | |
be663ab6 | 3552 | { |
46bc8d4b SG |
3553 | kfree(il->ieee_channels); |
3554 | kfree(il->ieee_rates); | |
a6766ccd | 3555 | clear_bit(S_GEO_CONFIGURED, &il->status); |
be663ab6 | 3556 | } |
e2ebc833 | 3557 | EXPORT_SYMBOL(il_free_geos); |
be663ab6 | 3558 | |
e7392364 SG |
3559 | static bool |
3560 | il_is_channel_extension(struct il_priv *il, enum ieee80211_band band, | |
3561 | u16 channel, u8 extension_chan_offset) | |
be663ab6 | 3562 | { |
e2ebc833 | 3563 | const struct il_channel_info *ch_info; |
be663ab6 | 3564 | |
46bc8d4b | 3565 | ch_info = il_get_channel_info(il, band, channel); |
e2ebc833 | 3566 | if (!il_is_channel_valid(ch_info)) |
be663ab6 WYG |
3567 | return false; |
3568 | ||
3569 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) | |
e7392364 SG |
3570 | return !(ch_info-> |
3571 | ht40_extension_channel & IEEE80211_CHAN_NO_HT40PLUS); | |
be663ab6 | 3572 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) |
e7392364 SG |
3573 | return !(ch_info-> |
3574 | ht40_extension_channel & IEEE80211_CHAN_NO_HT40MINUS); | |
be663ab6 WYG |
3575 | |
3576 | return false; | |
3577 | } | |
3578 | ||
e7392364 | 3579 | bool |
83007196 | 3580 | il_is_ht40_tx_allowed(struct il_priv *il, struct ieee80211_sta_ht_cap *ht_cap) |
be663ab6 | 3581 | { |
1c03c462 | 3582 | if (!il->ht.enabled || !il->ht.is_40mhz) |
be663ab6 WYG |
3583 | return false; |
3584 | ||
3585 | /* | |
3586 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
3587 | * the bit will not set if it is pure 40MHz case | |
3588 | */ | |
3589 | if (ht_cap && !ht_cap->ht_supported) | |
3590 | return false; | |
3591 | ||
d3175167 | 3592 | #ifdef CONFIG_IWLEGACY_DEBUGFS |
46bc8d4b | 3593 | if (il->disable_ht40) |
be663ab6 WYG |
3594 | return false; |
3595 | #endif | |
3596 | ||
46bc8d4b | 3597 | return il_is_channel_extension(il, il->band, |
c8b03958 | 3598 | le16_to_cpu(il->staging.channel), |
1c03c462 | 3599 | il->ht.extension_chan_offset); |
be663ab6 | 3600 | } |
e2ebc833 | 3601 | EXPORT_SYMBOL(il_is_ht40_tx_allowed); |
be663ab6 | 3602 | |
e7392364 SG |
3603 | static u16 |
3604 | il_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) | |
be663ab6 WYG |
3605 | { |
3606 | u16 new_val; | |
3607 | u16 beacon_factor; | |
3608 | ||
3609 | /* | |
3610 | * If mac80211 hasn't given us a beacon interval, program | |
3611 | * the default into the device. | |
3612 | */ | |
3613 | if (!beacon_val) | |
3614 | return DEFAULT_BEACON_INTERVAL; | |
3615 | ||
3616 | /* | |
3617 | * If the beacon interval we obtained from the peer | |
3618 | * is too large, we'll have to wake up more often | |
3619 | * (and in IBSS case, we'll beacon too much) | |
3620 | * | |
3621 | * For example, if max_beacon_val is 4096, and the | |
3622 | * requested beacon interval is 7000, we'll have to | |
3623 | * use 3500 to be able to wake up on the beacons. | |
3624 | * | |
3625 | * This could badly influence beacon detection stats. | |
3626 | */ | |
3627 | ||
3628 | beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; | |
3629 | new_val = beacon_val / beacon_factor; | |
3630 | ||
3631 | if (!new_val) | |
3632 | new_val = max_beacon_val; | |
3633 | ||
3634 | return new_val; | |
3635 | } | |
3636 | ||
3637 | int | |
83007196 | 3638 | il_send_rxon_timing(struct il_priv *il) |
be663ab6 WYG |
3639 | { |
3640 | u64 tsf; | |
3641 | s32 interval_tm, rem; | |
3642 | struct ieee80211_conf *conf = NULL; | |
3643 | u16 beacon_int; | |
83007196 | 3644 | struct ieee80211_vif *vif = il->vif; |
be663ab6 | 3645 | |
6278ddab | 3646 | conf = &il->hw->conf; |
be663ab6 | 3647 | |
46bc8d4b | 3648 | lockdep_assert_held(&il->mutex); |
be663ab6 | 3649 | |
c8b03958 | 3650 | memset(&il->timing, 0, sizeof(struct il_rxon_time_cmd)); |
be663ab6 | 3651 | |
c8b03958 SG |
3652 | il->timing.timestamp = cpu_to_le64(il->timestamp); |
3653 | il->timing.listen_interval = cpu_to_le16(conf->listen_interval); | |
be663ab6 WYG |
3654 | |
3655 | beacon_int = vif ? vif->bss_conf.beacon_int : 0; | |
3656 | ||
3657 | /* | |
6ce1dc45 | 3658 | * TODO: For IBSS we need to get atim_win from mac80211, |
e7392364 | 3659 | * for now just always use 0 |
be663ab6 | 3660 | */ |
c8b03958 | 3661 | il->timing.atim_win = 0; |
be663ab6 | 3662 | |
e7392364 SG |
3663 | beacon_int = |
3664 | il_adjust_beacon_interval(beacon_int, | |
3665 | il->hw_params.max_beacon_itrvl * | |
3666 | TIME_UNIT); | |
c8b03958 | 3667 | il->timing.beacon_interval = cpu_to_le16(beacon_int); |
be663ab6 | 3668 | |
e7392364 | 3669 | tsf = il->timestamp; /* tsf is modifed by do_div: copy it */ |
be663ab6 WYG |
3670 | interval_tm = beacon_int * TIME_UNIT; |
3671 | rem = do_div(tsf, interval_tm); | |
c8b03958 | 3672 | il->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); |
be663ab6 | 3673 | |
c8b03958 | 3674 | il->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ? : 1) : 1; |
be663ab6 | 3675 | |
e7392364 | 3676 | D_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n", |
c8b03958 SG |
3677 | le16_to_cpu(il->timing.beacon_interval), |
3678 | le32_to_cpu(il->timing.beacon_init_val), | |
3679 | le16_to_cpu(il->timing.atim_win)); | |
be663ab6 | 3680 | |
63d0f0c5 | 3681 | return il_send_cmd_pdu(il, C_RXON_TIMING, sizeof(il->timing), |
c8b03958 | 3682 | &il->timing); |
be663ab6 | 3683 | } |
e2ebc833 | 3684 | EXPORT_SYMBOL(il_send_rxon_timing); |
be663ab6 WYG |
3685 | |
3686 | void | |
83007196 | 3687 | il_set_rxon_hwcrypto(struct il_priv *il, int hw_decrypt) |
be663ab6 | 3688 | { |
c8b03958 | 3689 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 WYG |
3690 | |
3691 | if (hw_decrypt) | |
3692 | rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; | |
3693 | else | |
3694 | rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; | |
3695 | ||
3696 | } | |
e2ebc833 | 3697 | EXPORT_SYMBOL(il_set_rxon_hwcrypto); |
be663ab6 WYG |
3698 | |
3699 | /* validate RXON structure is valid */ | |
3700 | int | |
83007196 | 3701 | il_check_rxon_cmd(struct il_priv *il) |
be663ab6 | 3702 | { |
c8b03958 | 3703 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 WYG |
3704 | bool error = false; |
3705 | ||
3706 | if (rxon->flags & RXON_FLG_BAND_24G_MSK) { | |
3707 | if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { | |
9406f797 | 3708 | IL_WARN("check 2.4G: wrong narrow\n"); |
be663ab6 WYG |
3709 | error = true; |
3710 | } | |
3711 | if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { | |
9406f797 | 3712 | IL_WARN("check 2.4G: wrong radar\n"); |
be663ab6 WYG |
3713 | error = true; |
3714 | } | |
3715 | } else { | |
3716 | if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { | |
9406f797 | 3717 | IL_WARN("check 5.2G: not short slot!\n"); |
be663ab6 WYG |
3718 | error = true; |
3719 | } | |
3720 | if (rxon->flags & RXON_FLG_CCK_MSK) { | |
9406f797 | 3721 | IL_WARN("check 5.2G: CCK!\n"); |
be663ab6 WYG |
3722 | error = true; |
3723 | } | |
3724 | } | |
3725 | if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { | |
9406f797 | 3726 | IL_WARN("mac/bssid mcast!\n"); |
be663ab6 WYG |
3727 | error = true; |
3728 | } | |
3729 | ||
3730 | /* make sure basic rates 6Mbps and 1Mbps are supported */ | |
2eb05816 SG |
3731 | if ((rxon->ofdm_basic_rates & RATE_6M_MASK) == 0 && |
3732 | (rxon->cck_basic_rates & RATE_1M_MASK) == 0) { | |
9406f797 | 3733 | IL_WARN("neither 1 nor 6 are basic\n"); |
be663ab6 WYG |
3734 | error = true; |
3735 | } | |
3736 | ||
3737 | if (le16_to_cpu(rxon->assoc_id) > 2007) { | |
9406f797 | 3738 | IL_WARN("aid > 2007\n"); |
be663ab6 WYG |
3739 | error = true; |
3740 | } | |
3741 | ||
e7392364 SG |
3742 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) == |
3743 | (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { | |
9406f797 | 3744 | IL_WARN("CCK and short slot\n"); |
be663ab6 WYG |
3745 | error = true; |
3746 | } | |
3747 | ||
e7392364 SG |
3748 | if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) == |
3749 | (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { | |
9406f797 | 3750 | IL_WARN("CCK and auto detect"); |
be663ab6 WYG |
3751 | error = true; |
3752 | } | |
3753 | ||
e7392364 SG |
3754 | if ((rxon-> |
3755 | flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) == | |
3756 | RXON_FLG_TGG_PROTECT_MSK) { | |
9406f797 | 3757 | IL_WARN("TGg but no auto-detect\n"); |
be663ab6 WYG |
3758 | error = true; |
3759 | } | |
3760 | ||
3761 | if (error) | |
e7392364 | 3762 | IL_WARN("Tuning to channel %d\n", le16_to_cpu(rxon->channel)); |
be663ab6 WYG |
3763 | |
3764 | if (error) { | |
9406f797 | 3765 | IL_ERR("Invalid RXON\n"); |
be663ab6 WYG |
3766 | return -EINVAL; |
3767 | } | |
3768 | return 0; | |
3769 | } | |
e2ebc833 | 3770 | EXPORT_SYMBOL(il_check_rxon_cmd); |
be663ab6 WYG |
3771 | |
3772 | /** | |
e2ebc833 | 3773 | * il_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed |
46bc8d4b | 3774 | * @il: staging_rxon is compared to active_rxon |
be663ab6 WYG |
3775 | * |
3776 | * If the RXON structure is changing enough to require a new tune, | |
3777 | * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that | |
3778 | * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. | |
3779 | */ | |
e7392364 | 3780 | int |
83007196 | 3781 | il_full_rxon_required(struct il_priv *il) |
be663ab6 | 3782 | { |
c8b03958 SG |
3783 | const struct il_rxon_cmd *staging = &il->staging; |
3784 | const struct il_rxon_cmd *active = &il->active; | |
be663ab6 WYG |
3785 | |
3786 | #define CHK(cond) \ | |
3787 | if ((cond)) { \ | |
58de00a4 | 3788 | D_INFO("need full RXON - " #cond "\n"); \ |
be663ab6 WYG |
3789 | return 1; \ |
3790 | } | |
3791 | ||
3792 | #define CHK_NEQ(c1, c2) \ | |
3793 | if ((c1) != (c2)) { \ | |
58de00a4 | 3794 | D_INFO("need full RXON - " \ |
be663ab6 WYG |
3795 | #c1 " != " #c2 " - %d != %d\n", \ |
3796 | (c1), (c2)); \ | |
3797 | return 1; \ | |
3798 | } | |
3799 | ||
3800 | /* These items are only settable from the full RXON command */ | |
c8b03958 | 3801 | CHK(!il_is_associated(il)); |
ccbac290 JL |
3802 | CHK(!ether_addr_equal_64bits(staging->bssid_addr, active->bssid_addr)); |
3803 | CHK(!ether_addr_equal_64bits(staging->node_addr, active->node_addr)); | |
3804 | CHK(!ether_addr_equal_64bits(staging->wlap_bssid_addr, | |
3805 | active->wlap_bssid_addr)); | |
be663ab6 WYG |
3806 | CHK_NEQ(staging->dev_type, active->dev_type); |
3807 | CHK_NEQ(staging->channel, active->channel); | |
3808 | CHK_NEQ(staging->air_propagation, active->air_propagation); | |
3809 | CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, | |
3810 | active->ofdm_ht_single_stream_basic_rates); | |
3811 | CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, | |
3812 | active->ofdm_ht_dual_stream_basic_rates); | |
3813 | CHK_NEQ(staging->assoc_id, active->assoc_id); | |
3814 | ||
3815 | /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can | |
3816 | * be updated with the RXON_ASSOC command -- however only some | |
3817 | * flag transitions are allowed using RXON_ASSOC */ | |
3818 | ||
3819 | /* Check if we are not switching bands */ | |
3820 | CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, | |
3821 | active->flags & RXON_FLG_BAND_24G_MSK); | |
3822 | ||
3823 | /* Check if we are switching association toggle */ | |
3824 | CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, | |
3825 | active->filter_flags & RXON_FILTER_ASSOC_MSK); | |
3826 | ||
3827 | #undef CHK | |
3828 | #undef CHK_NEQ | |
3829 | ||
3830 | return 0; | |
3831 | } | |
e2ebc833 | 3832 | EXPORT_SYMBOL(il_full_rxon_required); |
be663ab6 | 3833 | |
e7392364 | 3834 | u8 |
83007196 | 3835 | il_get_lowest_plcp(struct il_priv *il) |
be663ab6 WYG |
3836 | { |
3837 | /* | |
3838 | * Assign the lowest rate -- should really get this from | |
3839 | * the beacon skb from mac80211. | |
3840 | */ | |
c8b03958 | 3841 | if (il->staging.flags & RXON_FLG_BAND_24G_MSK) |
2eb05816 | 3842 | return RATE_1M_PLCP; |
be663ab6 | 3843 | else |
2eb05816 | 3844 | return RATE_6M_PLCP; |
be663ab6 | 3845 | } |
e2ebc833 | 3846 | EXPORT_SYMBOL(il_get_lowest_plcp); |
be663ab6 | 3847 | |
e7392364 | 3848 | static void |
83007196 | 3849 | _il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) |
be663ab6 | 3850 | { |
c8b03958 | 3851 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 | 3852 | |
1c03c462 | 3853 | if (!il->ht.enabled) { |
e7392364 SG |
3854 | rxon->flags &= |
3855 | ~(RXON_FLG_CHANNEL_MODE_MSK | | |
3856 | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK | |
3857 | | RXON_FLG_HT_PROT_MSK); | |
be663ab6 WYG |
3858 | return; |
3859 | } | |
3860 | ||
e7392364 | 3861 | rxon->flags |= |
1c03c462 | 3862 | cpu_to_le32(il->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS); |
be663ab6 WYG |
3863 | |
3864 | /* Set up channel bandwidth: | |
3865 | * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ | |
3866 | /* clear the HT channel mode before set the mode */ | |
e7392364 SG |
3867 | rxon->flags &= |
3868 | ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
83007196 | 3869 | if (il_is_ht40_tx_allowed(il, NULL)) { |
be663ab6 | 3870 | /* pure ht40 */ |
1c03c462 | 3871 | if (il->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { |
be663ab6 WYG |
3872 | rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; |
3873 | /* Note: control channel is opposite of extension channel */ | |
1c03c462 | 3874 | switch (il->ht.extension_chan_offset) { |
be663ab6 WYG |
3875 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
3876 | rxon->flags &= | |
e7392364 | 3877 | ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
be663ab6 WYG |
3878 | break; |
3879 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
e7392364 | 3880 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
be663ab6 WYG |
3881 | break; |
3882 | } | |
3883 | } else { | |
3884 | /* Note: control channel is opposite of extension channel */ | |
1c03c462 | 3885 | switch (il->ht.extension_chan_offset) { |
be663ab6 WYG |
3886 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
3887 | rxon->flags &= | |
e7392364 | 3888 | ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); |
be663ab6 WYG |
3889 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
3890 | break; | |
3891 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
e7392364 | 3892 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; |
be663ab6 WYG |
3893 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; |
3894 | break; | |
3895 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
3896 | default: | |
3897 | /* channel location only valid if in Mixed mode */ | |
e7392364 | 3898 | IL_ERR("invalid extension channel offset\n"); |
be663ab6 WYG |
3899 | break; |
3900 | } | |
3901 | } | |
3902 | } else { | |
3903 | rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; | |
3904 | } | |
3905 | ||
c9363551 SG |
3906 | if (il->ops->set_rxon_chain) |
3907 | il->ops->set_rxon_chain(il); | |
be663ab6 | 3908 | |
58de00a4 | 3909 | D_ASSOC("rxon flags 0x%X operation mode :0x%X " |
e7392364 | 3910 | "extension channel offset 0x%x\n", le32_to_cpu(rxon->flags), |
1c03c462 | 3911 | il->ht.protection, il->ht.extension_chan_offset); |
be663ab6 WYG |
3912 | } |
3913 | ||
e7392364 SG |
3914 | void |
3915 | il_set_rxon_ht(struct il_priv *il, struct il_ht_config *ht_conf) | |
be663ab6 | 3916 | { |
83007196 | 3917 | _il_set_rxon_ht(il, ht_conf); |
be663ab6 | 3918 | } |
e2ebc833 | 3919 | EXPORT_SYMBOL(il_set_rxon_ht); |
be663ab6 WYG |
3920 | |
3921 | /* Return valid, unused, channel for a passive scan to reset the RF */ | |
e7392364 SG |
3922 | u8 |
3923 | il_get_single_channel_number(struct il_priv *il, enum ieee80211_band band) | |
be663ab6 | 3924 | { |
e2ebc833 | 3925 | const struct il_channel_info *ch_info; |
be663ab6 WYG |
3926 | int i; |
3927 | u8 channel = 0; | |
3928 | u8 min, max; | |
be663ab6 WYG |
3929 | |
3930 | if (band == IEEE80211_BAND_5GHZ) { | |
3931 | min = 14; | |
46bc8d4b | 3932 | max = il->channel_count; |
be663ab6 WYG |
3933 | } else { |
3934 | min = 0; | |
3935 | max = 14; | |
3936 | } | |
3937 | ||
3938 | for (i = min; i < max; i++) { | |
17d6e557 | 3939 | channel = il->channel_info[i].channel; |
c8b03958 | 3940 | if (channel == le16_to_cpu(il->staging.channel)) |
be663ab6 WYG |
3941 | continue; |
3942 | ||
46bc8d4b | 3943 | ch_info = il_get_channel_info(il, band, channel); |
e2ebc833 | 3944 | if (il_is_channel_valid(ch_info)) |
be663ab6 WYG |
3945 | break; |
3946 | } | |
3947 | ||
3948 | return channel; | |
3949 | } | |
e2ebc833 | 3950 | EXPORT_SYMBOL(il_get_single_channel_number); |
be663ab6 WYG |
3951 | |
3952 | /** | |
e2ebc833 | 3953 | * il_set_rxon_channel - Set the band and channel values in staging RXON |
be663ab6 WYG |
3954 | * @ch: requested channel as a pointer to struct ieee80211_channel |
3955 | ||
3956 | * NOTE: Does not commit to the hardware; it sets appropriate bit fields | |
3957 | * in the staging RXON flag structure based on the ch->band | |
3958 | */ | |
3959 | int | |
83007196 | 3960 | il_set_rxon_channel(struct il_priv *il, struct ieee80211_channel *ch) |
be663ab6 WYG |
3961 | { |
3962 | enum ieee80211_band band = ch->band; | |
3963 | u16 channel = ch->hw_value; | |
3964 | ||
c8b03958 | 3965 | if (le16_to_cpu(il->staging.channel) == channel && il->band == band) |
be663ab6 WYG |
3966 | return 0; |
3967 | ||
c8b03958 | 3968 | il->staging.channel = cpu_to_le16(channel); |
be663ab6 | 3969 | if (band == IEEE80211_BAND_5GHZ) |
c8b03958 | 3970 | il->staging.flags &= ~RXON_FLG_BAND_24G_MSK; |
be663ab6 | 3971 | else |
c8b03958 | 3972 | il->staging.flags |= RXON_FLG_BAND_24G_MSK; |
be663ab6 | 3973 | |
46bc8d4b | 3974 | il->band = band; |
be663ab6 | 3975 | |
58de00a4 | 3976 | D_INFO("Staging channel set to %d [%d]\n", channel, band); |
be663ab6 WYG |
3977 | |
3978 | return 0; | |
3979 | } | |
e2ebc833 | 3980 | EXPORT_SYMBOL(il_set_rxon_channel); |
be663ab6 | 3981 | |
e7392364 | 3982 | void |
83007196 SG |
3983 | il_set_flags_for_band(struct il_priv *il, enum ieee80211_band band, |
3984 | struct ieee80211_vif *vif) | |
be663ab6 WYG |
3985 | { |
3986 | if (band == IEEE80211_BAND_5GHZ) { | |
c8b03958 | 3987 | il->staging.flags &= |
e7392364 SG |
3988 | ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | |
3989 | RXON_FLG_CCK_MSK); | |
c8b03958 | 3990 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
be663ab6 | 3991 | } else { |
e2ebc833 | 3992 | /* Copied from il_post_associate() */ |
be663ab6 | 3993 | if (vif && vif->bss_conf.use_short_slot) |
c8b03958 | 3994 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
be663ab6 | 3995 | else |
c8b03958 | 3996 | il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
be663ab6 | 3997 | |
c8b03958 SG |
3998 | il->staging.flags |= RXON_FLG_BAND_24G_MSK; |
3999 | il->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; | |
4000 | il->staging.flags &= ~RXON_FLG_CCK_MSK; | |
be663ab6 WYG |
4001 | } |
4002 | } | |
e2ebc833 | 4003 | EXPORT_SYMBOL(il_set_flags_for_band); |
be663ab6 WYG |
4004 | |
4005 | /* | |
4006 | * initialize rxon structure with default values from eeprom | |
4007 | */ | |
e7392364 | 4008 | void |
83007196 | 4009 | il_connection_init_rx_config(struct il_priv *il) |
be663ab6 | 4010 | { |
e2ebc833 | 4011 | const struct il_channel_info *ch_info; |
be663ab6 | 4012 | |
c8b03958 | 4013 | memset(&il->staging, 0, sizeof(il->staging)); |
be663ab6 | 4014 | |
fa4cffcb SG |
4015 | switch (il->iw_mode) { |
4016 | case NL80211_IFTYPE_UNSPECIFIED: | |
0f8b90f5 | 4017 | il->staging.dev_type = RXON_DEV_TYPE_ESS; |
fa4cffcb SG |
4018 | break; |
4019 | case NL80211_IFTYPE_STATION: | |
83007196 SG |
4020 | il->staging.dev_type = RXON_DEV_TYPE_ESS; |
4021 | il->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; | |
fa4cffcb SG |
4022 | break; |
4023 | case NL80211_IFTYPE_ADHOC: | |
83007196 SG |
4024 | il->staging.dev_type = RXON_DEV_TYPE_IBSS; |
4025 | il->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; | |
4026 | il->staging.filter_flags = | |
4027 | RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK; | |
fa4cffcb SG |
4028 | break; |
4029 | default: | |
83007196 SG |
4030 | IL_ERR("Unsupported interface type %d\n", il->vif->type); |
4031 | return; | |
4032 | } | |
be663ab6 WYG |
4033 | |
4034 | #if 0 | |
4035 | /* TODO: Figure out when short_preamble would be set and cache from | |
4036 | * that */ | |
46bc8d4b | 4037 | if (!hw_to_local(il->hw)->short_preamble) |
c8b03958 | 4038 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 | 4039 | else |
c8b03958 | 4040 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 WYG |
4041 | #endif |
4042 | ||
e7392364 | 4043 | ch_info = |
c8b03958 | 4044 | il_get_channel_info(il, il->band, le16_to_cpu(il->active.channel)); |
be663ab6 WYG |
4045 | |
4046 | if (!ch_info) | |
46bc8d4b | 4047 | ch_info = &il->channel_info[0]; |
be663ab6 | 4048 | |
c8b03958 | 4049 | il->staging.channel = cpu_to_le16(ch_info->channel); |
46bc8d4b | 4050 | il->band = ch_info->band; |
be663ab6 | 4051 | |
83007196 | 4052 | il_set_flags_for_band(il, il->band, il->vif); |
be663ab6 | 4053 | |
c8b03958 | 4054 | il->staging.ofdm_basic_rates = |
e2ebc833 | 4055 | (IL_OFDM_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; |
c8b03958 | 4056 | il->staging.cck_basic_rates = |
e2ebc833 | 4057 | (IL_CCK_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; |
be663ab6 WYG |
4058 | |
4059 | /* clear both MIX and PURE40 mode flag */ | |
c8b03958 | 4060 | il->staging.flags &= |
e7392364 | 4061 | ~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40); |
83007196 SG |
4062 | if (il->vif) |
4063 | memcpy(il->staging.node_addr, il->vif->addr, ETH_ALEN); | |
be663ab6 | 4064 | |
c8b03958 SG |
4065 | il->staging.ofdm_ht_single_stream_basic_rates = 0xff; |
4066 | il->staging.ofdm_ht_dual_stream_basic_rates = 0xff; | |
be663ab6 | 4067 | } |
e2ebc833 | 4068 | EXPORT_SYMBOL(il_connection_init_rx_config); |
be663ab6 | 4069 | |
e7392364 SG |
4070 | void |
4071 | il_set_rate(struct il_priv *il) | |
be663ab6 WYG |
4072 | { |
4073 | const struct ieee80211_supported_band *hw = NULL; | |
4074 | struct ieee80211_rate *rate; | |
be663ab6 WYG |
4075 | int i; |
4076 | ||
46bc8d4b | 4077 | hw = il_get_hw_mode(il, il->band); |
be663ab6 | 4078 | if (!hw) { |
9406f797 | 4079 | IL_ERR("Failed to set rate: unable to get hw mode\n"); |
be663ab6 WYG |
4080 | return; |
4081 | } | |
4082 | ||
46bc8d4b | 4083 | il->active_rate = 0; |
be663ab6 WYG |
4084 | |
4085 | for (i = 0; i < hw->n_bitrates; i++) { | |
4086 | rate = &(hw->bitrates[i]); | |
2eb05816 | 4087 | if (rate->hw_value < RATE_COUNT_LEGACY) |
46bc8d4b | 4088 | il->active_rate |= (1 << rate->hw_value); |
be663ab6 WYG |
4089 | } |
4090 | ||
58de00a4 | 4091 | D_RATE("Set active_rate = %0x\n", il->active_rate); |
be663ab6 | 4092 | |
c8b03958 | 4093 | il->staging.cck_basic_rates = |
e7392364 | 4094 | (IL_CCK_BASIC_RATES_MASK >> IL_FIRST_CCK_RATE) & 0xF; |
be663ab6 | 4095 | |
c8b03958 | 4096 | il->staging.ofdm_basic_rates = |
e7392364 | 4097 | (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF; |
be663ab6 | 4098 | } |
e2ebc833 | 4099 | EXPORT_SYMBOL(il_set_rate); |
be663ab6 | 4100 | |
e7392364 SG |
4101 | void |
4102 | il_chswitch_done(struct il_priv *il, bool is_success) | |
be663ab6 | 4103 | { |
a6766ccd | 4104 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
4105 | return; |
4106 | ||
a6766ccd | 4107 | if (test_and_clear_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) |
83007196 | 4108 | ieee80211_chswitch_done(il->vif, is_success); |
be663ab6 | 4109 | } |
e2ebc833 | 4110 | EXPORT_SYMBOL(il_chswitch_done); |
be663ab6 | 4111 | |
e7392364 SG |
4112 | void |
4113 | il_hdl_csa(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4114 | { |
dcae1c64 | 4115 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 4116 | struct il_csa_notification *csa = &(pkt->u.csa_notif); |
c8b03958 | 4117 | struct il_rxon_cmd *rxon = (void *)&il->active; |
be663ab6 | 4118 | |
a6766ccd | 4119 | if (!test_bit(S_CHANNEL_SWITCH_PENDING, &il->status)) |
51e65257 SG |
4120 | return; |
4121 | ||
46bc8d4b | 4122 | if (!le32_to_cpu(csa->status) && csa->channel == il->switch_channel) { |
51e65257 | 4123 | rxon->channel = csa->channel; |
c8b03958 | 4124 | il->staging.channel = csa->channel; |
e7392364 | 4125 | D_11H("CSA notif: channel %d\n", le16_to_cpu(csa->channel)); |
46bc8d4b | 4126 | il_chswitch_done(il, true); |
51e65257 | 4127 | } else { |
9406f797 | 4128 | IL_ERR("CSA notif (fail) : channel %d\n", |
e7392364 | 4129 | le16_to_cpu(csa->channel)); |
46bc8d4b | 4130 | il_chswitch_done(il, false); |
be663ab6 WYG |
4131 | } |
4132 | } | |
d2dfb33e | 4133 | EXPORT_SYMBOL(il_hdl_csa); |
be663ab6 | 4134 | |
d3175167 | 4135 | #ifdef CONFIG_IWLEGACY_DEBUG |
e7392364 | 4136 | void |
83007196 | 4137 | il_print_rx_config_cmd(struct il_priv *il) |
be663ab6 | 4138 | { |
c8b03958 | 4139 | struct il_rxon_cmd *rxon = &il->staging; |
be663ab6 | 4140 | |
58de00a4 | 4141 | D_RADIO("RX CONFIG:\n"); |
46bc8d4b | 4142 | il_print_hex_dump(il, IL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); |
e7392364 | 4143 | D_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); |
58de00a4 | 4144 | D_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); |
e7392364 | 4145 | D_RADIO("u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags)); |
58de00a4 | 4146 | D_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type); |
e7392364 SG |
4147 | D_RADIO("u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates); |
4148 | D_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); | |
58de00a4 SG |
4149 | D_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr); |
4150 | D_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr); | |
e7392364 | 4151 | D_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); |
be663ab6 | 4152 | } |
e2ebc833 | 4153 | EXPORT_SYMBOL(il_print_rx_config_cmd); |
be663ab6 WYG |
4154 | #endif |
4155 | /** | |
e2ebc833 | 4156 | * il_irq_handle_error - called for HW or SW error interrupt from card |
be663ab6 | 4157 | */ |
e7392364 SG |
4158 | void |
4159 | il_irq_handle_error(struct il_priv *il) | |
be663ab6 | 4160 | { |
e2ebc833 | 4161 | /* Set the FW error flag -- cleared on il_down */ |
a6766ccd | 4162 | set_bit(S_FW_ERROR, &il->status); |
be663ab6 WYG |
4163 | |
4164 | /* Cancel currently queued command. */ | |
a6766ccd | 4165 | clear_bit(S_HCMD_ACTIVE, &il->status); |
be663ab6 | 4166 | |
e7392364 | 4167 | IL_ERR("Loaded firmware version: %s\n", il->hw->wiphy->fw_version); |
be663ab6 | 4168 | |
1600b875 SG |
4169 | il->ops->dump_nic_error_log(il); |
4170 | if (il->ops->dump_fh) | |
4171 | il->ops->dump_fh(il, NULL, false); | |
d3175167 | 4172 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 4173 | if (il_get_debug_level(il) & IL_DL_FW_ERRORS) |
83007196 | 4174 | il_print_rx_config_cmd(il); |
be663ab6 WYG |
4175 | #endif |
4176 | ||
46bc8d4b | 4177 | wake_up(&il->wait_command_queue); |
be663ab6 WYG |
4178 | |
4179 | /* Keep the restart process from trying to send host | |
4180 | * commands by clearing the INIT status bit */ | |
a6766ccd | 4181 | clear_bit(S_READY, &il->status); |
be663ab6 | 4182 | |
a6766ccd | 4183 | if (!test_bit(S_EXIT_PENDING, &il->status)) { |
58de00a4 | 4184 | IL_DBG(IL_DL_FW_ERRORS, |
e7392364 | 4185 | "Restarting adapter due to uCode error.\n"); |
be663ab6 | 4186 | |
46bc8d4b SG |
4187 | if (il->cfg->mod_params->restart_fw) |
4188 | queue_work(il->workqueue, &il->restart); | |
be663ab6 WYG |
4189 | } |
4190 | } | |
e2ebc833 | 4191 | EXPORT_SYMBOL(il_irq_handle_error); |
be663ab6 | 4192 | |
e7392364 | 4193 | static int |
775ed8ab | 4194 | _il_apm_stop_master(struct il_priv *il) |
be663ab6 WYG |
4195 | { |
4196 | int ret = 0; | |
4197 | ||
4198 | /* stop device's busmaster DMA activity */ | |
775ed8ab | 4199 | _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
be663ab6 | 4200 | |
e7392364 SG |
4201 | ret = |
4202 | _il_poll_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, | |
4203 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
586e45e3 | 4204 | if (ret < 0) |
9406f797 | 4205 | IL_WARN("Master Disable Timed Out, 100 usec\n"); |
be663ab6 | 4206 | |
58de00a4 | 4207 | D_INFO("stop master\n"); |
be663ab6 WYG |
4208 | |
4209 | return ret; | |
4210 | } | |
4211 | ||
e7392364 | 4212 | void |
775ed8ab | 4213 | _il_apm_stop(struct il_priv *il) |
be663ab6 | 4214 | { |
775ed8ab SG |
4215 | lockdep_assert_held(&il->reg_lock); |
4216 | ||
58de00a4 | 4217 | D_INFO("Stop card, put in low power state\n"); |
be663ab6 WYG |
4218 | |
4219 | /* Stop device's DMA activity */ | |
775ed8ab | 4220 | _il_apm_stop_master(il); |
be663ab6 WYG |
4221 | |
4222 | /* Reset the entire device */ | |
775ed8ab | 4223 | _il_set_bit(il, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
be663ab6 WYG |
4224 | |
4225 | udelay(10); | |
4226 | ||
4227 | /* | |
4228 | * Clear "initialization complete" bit to move adapter from | |
4229 | * D0A* (powered-up Active) --> D0U* (Uninitialized) state. | |
4230 | */ | |
775ed8ab SG |
4231 | _il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
4232 | } | |
4233 | EXPORT_SYMBOL(_il_apm_stop); | |
4234 | ||
4235 | void | |
4236 | il_apm_stop(struct il_priv *il) | |
4237 | { | |
4238 | unsigned long flags; | |
4239 | ||
4240 | spin_lock_irqsave(&il->reg_lock, flags); | |
4241 | _il_apm_stop(il); | |
4242 | spin_unlock_irqrestore(&il->reg_lock, flags); | |
be663ab6 | 4243 | } |
e7392364 | 4244 | EXPORT_SYMBOL(il_apm_stop); |
be663ab6 WYG |
4245 | |
4246 | /* | |
4247 | * Start up NIC's basic functionality after it has been reset | |
e2ebc833 | 4248 | * (e.g. after platform boot, or shutdown via il_apm_stop()) |
be663ab6 WYG |
4249 | * NOTE: This does not load uCode nor start the embedded processor |
4250 | */ | |
e7392364 SG |
4251 | int |
4252 | il_apm_init(struct il_priv *il) | |
be663ab6 WYG |
4253 | { |
4254 | int ret = 0; | |
4255 | u16 lctl; | |
4256 | ||
58de00a4 | 4257 | D_INFO("Init card's basic functions\n"); |
be663ab6 WYG |
4258 | |
4259 | /* | |
4260 | * Use "set_bit" below rather than "write", to preserve any hardware | |
4261 | * bits already set by default after reset. | |
4262 | */ | |
4263 | ||
4264 | /* Disable L0S exit timer (platform NMI Work/Around) */ | |
46bc8d4b | 4265 | il_set_bit(il, CSR_GIO_CHICKEN_BITS, |
e7392364 | 4266 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); |
be663ab6 WYG |
4267 | |
4268 | /* | |
4269 | * Disable L0s without affecting L1; | |
4270 | * don't wait for ICH L0s (ICH bug W/A) | |
4271 | */ | |
46bc8d4b | 4272 | il_set_bit(il, CSR_GIO_CHICKEN_BITS, |
e7392364 | 4273 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
be663ab6 WYG |
4274 | |
4275 | /* Set FH wait threshold to maximum (HW error during stress W/A) */ | |
e7392364 | 4276 | il_set_bit(il, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL); |
be663ab6 WYG |
4277 | |
4278 | /* | |
4279 | * Enable HAP INTA (interrupt from management bus) to | |
4280 | * wake device's PCI Express link L1a -> L0s | |
25985edc | 4281 | * NOTE: This is no-op for 3945 (non-existent bit) |
be663ab6 | 4282 | */ |
46bc8d4b | 4283 | il_set_bit(il, CSR_HW_IF_CONFIG_REG, |
e7392364 | 4284 | CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
be663ab6 WYG |
4285 | |
4286 | /* | |
4287 | * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. | |
4288 | * Check if BIOS (or OS) enabled L1-ASPM on this device. | |
4289 | * If so (likely), disable L0S, so device moves directly L0->L1; | |
4290 | * costs negligible amount of power savings. | |
4291 | * If not (unlikely), enable L0S, so there is at least some | |
4292 | * power savings, even without L1. | |
4293 | */ | |
89ef1ed2 | 4294 | if (il->cfg->set_l0s) { |
94e15613 | 4295 | pcie_capability_read_word(il->pci_dev, PCI_EXP_LNKCTL, &lctl); |
f93eaffc | 4296 | if (lctl & PCI_EXP_LNKCTL_ASPM_L1) { |
be663ab6 | 4297 | /* L1-ASPM enabled; disable(!) L0S */ |
46bc8d4b | 4298 | il_set_bit(il, CSR_GIO_REG, |
e7392364 | 4299 | CSR_GIO_REG_VAL_L0S_ENABLED); |
58de00a4 | 4300 | D_POWER("L1 Enabled; Disabling L0S\n"); |
be663ab6 WYG |
4301 | } else { |
4302 | /* L1-ASPM disabled; enable(!) L0S */ | |
46bc8d4b | 4303 | il_clear_bit(il, CSR_GIO_REG, |
e7392364 | 4304 | CSR_GIO_REG_VAL_L0S_ENABLED); |
58de00a4 | 4305 | D_POWER("L1 Disabled; Enabling L0S\n"); |
be663ab6 WYG |
4306 | } |
4307 | } | |
4308 | ||
4309 | /* Configure analog phase-lock-loop before activating to D0A */ | |
89ef1ed2 | 4310 | if (il->cfg->pll_cfg_val) |
46bc8d4b | 4311 | il_set_bit(il, CSR_ANA_PLL_CFG, |
89ef1ed2 | 4312 | il->cfg->pll_cfg_val); |
be663ab6 WYG |
4313 | |
4314 | /* | |
4315 | * Set "initialization complete" bit to move adapter from | |
4316 | * D0U* --> D0A* (powered-up active) state. | |
4317 | */ | |
46bc8d4b | 4318 | il_set_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
be663ab6 WYG |
4319 | |
4320 | /* | |
4321 | * Wait for clock stabilization; once stabilized, access to | |
db54eb57 | 4322 | * device-internal resources is supported, e.g. il_wr_prph() |
be663ab6 WYG |
4323 | * and accesses to uCode SRAM. |
4324 | */ | |
e7392364 SG |
4325 | ret = |
4326 | _il_poll_bit(il, CSR_GP_CNTRL, | |
4327 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, | |
4328 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
be663ab6 | 4329 | if (ret < 0) { |
58de00a4 | 4330 | D_INFO("Failed to init the card\n"); |
be663ab6 WYG |
4331 | goto out; |
4332 | } | |
4333 | ||
4334 | /* | |
4335 | * Enable DMA and BSM (if used) clocks, wait for them to stabilize. | |
4336 | * BSM (Boostrap State Machine) is only in 3945 and 4965. | |
4337 | * | |
4338 | * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits | |
4339 | * do not disable clocks. This preserves any hardware bits already | |
4340 | * set by default in "CLK_CTRL_REG" after reset. | |
4341 | */ | |
89ef1ed2 | 4342 | if (il->cfg->use_bsm) |
db54eb57 | 4343 | il_wr_prph(il, APMG_CLK_EN_REG, |
e7392364 | 4344 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); |
be663ab6 | 4345 | else |
e7392364 | 4346 | il_wr_prph(il, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT); |
be663ab6 WYG |
4347 | udelay(20); |
4348 | ||
4349 | /* Disable L1-Active */ | |
46bc8d4b | 4350 | il_set_bits_prph(il, APMG_PCIDEV_STT_REG, |
e7392364 | 4351 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
be663ab6 WYG |
4352 | |
4353 | out: | |
4354 | return ret; | |
4355 | } | |
e7392364 | 4356 | EXPORT_SYMBOL(il_apm_init); |
be663ab6 | 4357 | |
e7392364 SG |
4358 | int |
4359 | il_set_tx_power(struct il_priv *il, s8 tx_power, bool force) | |
be663ab6 WYG |
4360 | { |
4361 | int ret; | |
4362 | s8 prev_tx_power; | |
43f12d47 | 4363 | bool defer; |
be663ab6 | 4364 | |
46bc8d4b | 4365 | lockdep_assert_held(&il->mutex); |
be663ab6 | 4366 | |
46bc8d4b | 4367 | if (il->tx_power_user_lmt == tx_power && !force) |
be663ab6 WYG |
4368 | return 0; |
4369 | ||
1600b875 | 4370 | if (!il->ops->send_tx_power) |
be663ab6 WYG |
4371 | return -EOPNOTSUPP; |
4372 | ||
332704a5 SG |
4373 | /* 0 dBm mean 1 milliwatt */ |
4374 | if (tx_power < 0) { | |
e7392364 | 4375 | IL_WARN("Requested user TXPOWER %d below 1 mW.\n", tx_power); |
be663ab6 WYG |
4376 | return -EINVAL; |
4377 | } | |
4378 | ||
46bc8d4b | 4379 | if (tx_power > il->tx_power_device_lmt) { |
e7392364 SG |
4380 | IL_WARN("Requested user TXPOWER %d above upper limit %d.\n", |
4381 | tx_power, il->tx_power_device_lmt); | |
be663ab6 WYG |
4382 | return -EINVAL; |
4383 | } | |
4384 | ||
46bc8d4b | 4385 | if (!il_is_ready_rf(il)) |
be663ab6 WYG |
4386 | return -EIO; |
4387 | ||
43f12d47 SG |
4388 | /* scan complete and commit_rxon use tx_power_next value, |
4389 | * it always need to be updated for newest request */ | |
46bc8d4b | 4390 | il->tx_power_next = tx_power; |
43f12d47 SG |
4391 | |
4392 | /* do not set tx power when scanning or channel changing */ | |
a6766ccd | 4393 | defer = test_bit(S_SCANNING, &il->status) || |
c8b03958 | 4394 | memcmp(&il->active, &il->staging, sizeof(il->staging)); |
43f12d47 | 4395 | if (defer && !force) { |
58de00a4 | 4396 | D_INFO("Deferring tx power set\n"); |
be663ab6 WYG |
4397 | return 0; |
4398 | } | |
4399 | ||
46bc8d4b SG |
4400 | prev_tx_power = il->tx_power_user_lmt; |
4401 | il->tx_power_user_lmt = tx_power; | |
be663ab6 | 4402 | |
1600b875 | 4403 | ret = il->ops->send_tx_power(il); |
be663ab6 WYG |
4404 | |
4405 | /* if fail to set tx_power, restore the orig. tx power */ | |
4406 | if (ret) { | |
46bc8d4b SG |
4407 | il->tx_power_user_lmt = prev_tx_power; |
4408 | il->tx_power_next = prev_tx_power; | |
be663ab6 WYG |
4409 | } |
4410 | return ret; | |
4411 | } | |
e2ebc833 | 4412 | EXPORT_SYMBOL(il_set_tx_power); |
be663ab6 | 4413 | |
e7392364 SG |
4414 | void |
4415 | il_send_bt_config(struct il_priv *il) | |
be663ab6 | 4416 | { |
e2ebc833 | 4417 | struct il_bt_cmd bt_cmd = { |
be663ab6 WYG |
4418 | .lead_time = BT_LEAD_TIME_DEF, |
4419 | .max_kill = BT_MAX_KILL_DEF, | |
4420 | .kill_ack_mask = 0, | |
4421 | .kill_cts_mask = 0, | |
4422 | }; | |
4423 | ||
4424 | if (!bt_coex_active) | |
4425 | bt_cmd.flags = BT_COEX_DISABLE; | |
4426 | else | |
4427 | bt_cmd.flags = BT_COEX_ENABLE; | |
4428 | ||
58de00a4 | 4429 | D_INFO("BT coex %s\n", |
e7392364 | 4430 | (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); |
be663ab6 | 4431 | |
e7392364 | 4432 | if (il_send_cmd_pdu(il, C_BT_CONFIG, sizeof(struct il_bt_cmd), &bt_cmd)) |
9406f797 | 4433 | IL_ERR("failed to send BT Coex Config\n"); |
be663ab6 | 4434 | } |
e2ebc833 | 4435 | EXPORT_SYMBOL(il_send_bt_config); |
be663ab6 | 4436 | |
e7392364 SG |
4437 | int |
4438 | il_send_stats_request(struct il_priv *il, u8 flags, bool clear) | |
be663ab6 | 4439 | { |
ebf0d90d | 4440 | struct il_stats_cmd stats_cmd = { |
e7392364 | 4441 | .configuration_flags = clear ? IL_STATS_CONF_CLEAR_STATS : 0, |
be663ab6 WYG |
4442 | }; |
4443 | ||
4444 | if (flags & CMD_ASYNC) | |
e7392364 SG |
4445 | return il_send_cmd_pdu_async(il, C_STATS, sizeof(struct il_stats_cmd), |
4446 | &stats_cmd, NULL); | |
be663ab6 | 4447 | else |
e7392364 SG |
4448 | return il_send_cmd_pdu(il, C_STATS, sizeof(struct il_stats_cmd), |
4449 | &stats_cmd); | |
be663ab6 | 4450 | } |
ebf0d90d | 4451 | EXPORT_SYMBOL(il_send_stats_request); |
be663ab6 | 4452 | |
e7392364 SG |
4453 | void |
4454 | il_hdl_pm_sleep(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4455 | { |
d3175167 | 4456 | #ifdef CONFIG_IWLEGACY_DEBUG |
dcae1c64 | 4457 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 4458 | struct il_sleep_notification *sleep = &(pkt->u.sleep_notif); |
58de00a4 | 4459 | D_RX("sleep mode: %d, src: %d\n", |
1722f8e1 | 4460 | sleep->pm_sleep_mode, sleep->pm_wakeup_src); |
be663ab6 WYG |
4461 | #endif |
4462 | } | |
d2dfb33e | 4463 | EXPORT_SYMBOL(il_hdl_pm_sleep); |
be663ab6 | 4464 | |
e7392364 SG |
4465 | void |
4466 | il_hdl_pm_debug_stats(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4467 | { |
dcae1c64 | 4468 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e94a4099 | 4469 | u32 len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; |
e7392364 SG |
4470 | D_RADIO("Dumping %d bytes of unhandled notification for %s:\n", len, |
4471 | il_get_cmd_string(pkt->hdr.cmd)); | |
46bc8d4b | 4472 | il_print_hex_dump(il, IL_DL_RADIO, pkt->u.raw, len); |
be663ab6 | 4473 | } |
d2dfb33e | 4474 | EXPORT_SYMBOL(il_hdl_pm_debug_stats); |
be663ab6 | 4475 | |
e7392364 SG |
4476 | void |
4477 | il_hdl_error(struct il_priv *il, struct il_rx_buf *rxb) | |
be663ab6 | 4478 | { |
dcae1c64 | 4479 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
be663ab6 | 4480 | |
9406f797 | 4481 | IL_ERR("Error Reply type 0x%08X cmd %s (0x%02X) " |
e7392364 SG |
4482 | "seq 0x%04X ser 0x%08X\n", |
4483 | le32_to_cpu(pkt->u.err_resp.error_type), | |
4484 | il_get_cmd_string(pkt->u.err_resp.cmd_id), | |
4485 | pkt->u.err_resp.cmd_id, | |
4486 | le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), | |
4487 | le32_to_cpu(pkt->u.err_resp.error_info)); | |
be663ab6 | 4488 | } |
6e9848b4 | 4489 | EXPORT_SYMBOL(il_hdl_error); |
be663ab6 | 4490 | |
e7392364 SG |
4491 | void |
4492 | il_clear_isr_stats(struct il_priv *il) | |
be663ab6 | 4493 | { |
46bc8d4b | 4494 | memset(&il->isr_stats, 0, sizeof(il->isr_stats)); |
be663ab6 WYG |
4495 | } |
4496 | ||
e7392364 SG |
4497 | int |
4498 | il_mac_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, | |
4499 | const struct ieee80211_tx_queue_params *params) | |
be663ab6 | 4500 | { |
46bc8d4b | 4501 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
4502 | unsigned long flags; |
4503 | int q; | |
4504 | ||
58de00a4 | 4505 | D_MAC80211("enter\n"); |
be663ab6 | 4506 | |
46bc8d4b | 4507 | if (!il_is_ready_rf(il)) { |
58de00a4 | 4508 | D_MAC80211("leave - RF not ready\n"); |
be663ab6 WYG |
4509 | return -EIO; |
4510 | } | |
4511 | ||
4512 | if (queue >= AC_NUM) { | |
58de00a4 | 4513 | D_MAC80211("leave - queue >= AC_NUM %d\n", queue); |
be663ab6 WYG |
4514 | return 0; |
4515 | } | |
4516 | ||
4517 | q = AC_NUM - 1 - queue; | |
4518 | ||
46bc8d4b | 4519 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 4520 | |
8d44f2bd | 4521 | il->qos_data.def_qos_parm.ac[q].cw_min = |
e7392364 | 4522 | cpu_to_le16(params->cw_min); |
8d44f2bd | 4523 | il->qos_data.def_qos_parm.ac[q].cw_max = |
e7392364 | 4524 | cpu_to_le16(params->cw_max); |
8d44f2bd SG |
4525 | il->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
4526 | il->qos_data.def_qos_parm.ac[q].edca_txop = | |
e7392364 | 4527 | cpu_to_le16((params->txop * 32)); |
be663ab6 | 4528 | |
8d44f2bd | 4529 | il->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
be663ab6 | 4530 | |
46bc8d4b | 4531 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 4532 | |
58de00a4 | 4533 | D_MAC80211("leave\n"); |
be663ab6 WYG |
4534 | return 0; |
4535 | } | |
e2ebc833 | 4536 | EXPORT_SYMBOL(il_mac_conf_tx); |
be663ab6 | 4537 | |
e7392364 SG |
4538 | int |
4539 | il_mac_tx_last_beacon(struct ieee80211_hw *hw) | |
be663ab6 | 4540 | { |
46bc8d4b | 4541 | struct il_priv *il = hw->priv; |
9ce7b73c | 4542 | int ret; |
be663ab6 | 4543 | |
9ce7b73c SG |
4544 | D_MAC80211("enter\n"); |
4545 | ||
4546 | ret = (il->ibss_manager == IL_IBSS_MANAGER); | |
4547 | ||
4548 | D_MAC80211("leave ret %d\n", ret); | |
4549 | return ret; | |
be663ab6 | 4550 | } |
e2ebc833 | 4551 | EXPORT_SYMBOL_GPL(il_mac_tx_last_beacon); |
be663ab6 WYG |
4552 | |
4553 | static int | |
83007196 | 4554 | il_set_mode(struct il_priv *il) |
be663ab6 | 4555 | { |
83007196 | 4556 | il_connection_init_rx_config(il); |
be663ab6 | 4557 | |
c9363551 SG |
4558 | if (il->ops->set_rxon_chain) |
4559 | il->ops->set_rxon_chain(il); | |
be663ab6 | 4560 | |
83007196 | 4561 | return il_commit_rxon(il); |
be663ab6 WYG |
4562 | } |
4563 | ||
be663ab6 | 4564 | int |
e2ebc833 | 4565 | il_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
be663ab6 | 4566 | { |
46bc8d4b | 4567 | struct il_priv *il = hw->priv; |
be663ab6 | 4568 | int err; |
883a649b | 4569 | bool reset; |
be663ab6 | 4570 | |
46bc8d4b | 4571 | mutex_lock(&il->mutex); |
9ce7b73c | 4572 | D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
be663ab6 | 4573 | |
46bc8d4b | 4574 | if (!il_is_ready_rf(il)) { |
9406f797 | 4575 | IL_WARN("Try to add interface when device not ready\n"); |
be663ab6 WYG |
4576 | err = -EINVAL; |
4577 | goto out; | |
4578 | } | |
4579 | ||
883a649b SG |
4580 | /* |
4581 | * We do not support multiple virtual interfaces, but on hardware reset | |
4582 | * we have to add the same interface again. | |
4583 | */ | |
4584 | reset = (il->vif == vif); | |
4585 | if (il->vif && !reset) { | |
be663ab6 WYG |
4586 | err = -EOPNOTSUPP; |
4587 | goto out; | |
4588 | } | |
4589 | ||
83007196 | 4590 | il->vif = vif; |
20c47eba | 4591 | il->iw_mode = vif->type; |
be663ab6 | 4592 | |
83007196 | 4593 | err = il_set_mode(il); |
17d6e557 | 4594 | if (err) { |
883a649b SG |
4595 | IL_WARN("Fail to set mode %d\n", vif->type); |
4596 | if (!reset) { | |
4597 | il->vif = NULL; | |
4598 | il->iw_mode = NL80211_IFTYPE_STATION; | |
4599 | } | |
17d6e557 | 4600 | } |
be663ab6 | 4601 | |
e7392364 | 4602 | out: |
9ce7b73c | 4603 | D_MAC80211("leave err %d\n", err); |
46bc8d4b | 4604 | mutex_unlock(&il->mutex); |
be663ab6 | 4605 | |
be663ab6 WYG |
4606 | return err; |
4607 | } | |
e2ebc833 | 4608 | EXPORT_SYMBOL(il_mac_add_interface); |
be663ab6 | 4609 | |
e7392364 | 4610 | static void |
fa4cffcb | 4611 | il_teardown_interface(struct il_priv *il, struct ieee80211_vif *vif) |
be663ab6 | 4612 | { |
46bc8d4b | 4613 | lockdep_assert_held(&il->mutex); |
be663ab6 | 4614 | |
46bc8d4b SG |
4615 | if (il->scan_vif == vif) { |
4616 | il_scan_cancel_timeout(il, 200); | |
4617 | il_force_scan_end(il); | |
be663ab6 WYG |
4618 | } |
4619 | ||
fa4cffcb | 4620 | il_set_mode(il); |
be663ab6 WYG |
4621 | } |
4622 | ||
e7392364 SG |
4623 | void |
4624 | il_mac_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
be663ab6 | 4625 | { |
46bc8d4b | 4626 | struct il_priv *il = hw->priv; |
be663ab6 | 4627 | |
46bc8d4b | 4628 | mutex_lock(&il->mutex); |
9ce7b73c | 4629 | D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
be663ab6 | 4630 | |
83007196 SG |
4631 | WARN_ON(il->vif != vif); |
4632 | il->vif = NULL; | |
fa4cffcb SG |
4633 | il->iw_mode = NL80211_IFTYPE_UNSPECIFIED; |
4634 | il_teardown_interface(il, vif); | |
46bc8d4b | 4635 | memset(il->bssid, 0, ETH_ALEN); |
be663ab6 | 4636 | |
58de00a4 | 4637 | D_MAC80211("leave\n"); |
9ce7b73c | 4638 | mutex_unlock(&il->mutex); |
be663ab6 | 4639 | } |
e2ebc833 | 4640 | EXPORT_SYMBOL(il_mac_remove_interface); |
be663ab6 | 4641 | |
e7392364 SG |
4642 | int |
4643 | il_alloc_txq_mem(struct il_priv *il) | |
be663ab6 | 4644 | { |
46bc8d4b | 4645 | if (!il->txq) |
e7392364 SG |
4646 | il->txq = |
4647 | kzalloc(sizeof(struct il_tx_queue) * | |
89ef1ed2 | 4648 | il->cfg->num_of_queues, GFP_KERNEL); |
46bc8d4b | 4649 | if (!il->txq) { |
9406f797 | 4650 | IL_ERR("Not enough memory for txq\n"); |
be663ab6 WYG |
4651 | return -ENOMEM; |
4652 | } | |
4653 | return 0; | |
4654 | } | |
e2ebc833 | 4655 | EXPORT_SYMBOL(il_alloc_txq_mem); |
be663ab6 | 4656 | |
e7392364 | 4657 | void |
6668e4eb | 4658 | il_free_txq_mem(struct il_priv *il) |
be663ab6 | 4659 | { |
46bc8d4b SG |
4660 | kfree(il->txq); |
4661 | il->txq = NULL; | |
be663ab6 | 4662 | } |
6668e4eb | 4663 | EXPORT_SYMBOL(il_free_txq_mem); |
be663ab6 | 4664 | |
e7392364 SG |
4665 | int |
4666 | il_force_reset(struct il_priv *il, bool external) | |
be663ab6 | 4667 | { |
e2ebc833 | 4668 | struct il_force_reset *force_reset; |
be663ab6 | 4669 | |
a6766ccd | 4670 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
4671 | return -EINVAL; |
4672 | ||
46bc8d4b | 4673 | force_reset = &il->force_reset; |
be663ab6 WYG |
4674 | force_reset->reset_request_count++; |
4675 | if (!external) { | |
4676 | if (force_reset->last_force_reset_jiffies && | |
4677 | time_after(force_reset->last_force_reset_jiffies + | |
e7392364 | 4678 | force_reset->reset_duration, jiffies)) { |
58de00a4 | 4679 | D_INFO("force reset rejected\n"); |
be663ab6 WYG |
4680 | force_reset->reset_reject_count++; |
4681 | return -EAGAIN; | |
4682 | } | |
4683 | } | |
4684 | force_reset->reset_success_count++; | |
4685 | force_reset->last_force_reset_jiffies = jiffies; | |
dd6d2a8a SG |
4686 | |
4687 | /* | |
4688 | * if the request is from external(ex: debugfs), | |
4689 | * then always perform the request in regardless the module | |
4690 | * parameter setting | |
4691 | * if the request is from internal (uCode error or driver | |
4692 | * detect failure), then fw_restart module parameter | |
4693 | * need to be check before performing firmware reload | |
4694 | */ | |
4695 | ||
46bc8d4b | 4696 | if (!external && !il->cfg->mod_params->restart_fw) { |
58de00a4 | 4697 | D_INFO("Cancel firmware reload based on " |
e7392364 | 4698 | "module parameter setting\n"); |
dd6d2a8a | 4699 | return 0; |
be663ab6 | 4700 | } |
dd6d2a8a | 4701 | |
9406f797 | 4702 | IL_ERR("On demand firmware reload\n"); |
dd6d2a8a | 4703 | |
e2ebc833 | 4704 | /* Set the FW error flag -- cleared on il_down */ |
a6766ccd | 4705 | set_bit(S_FW_ERROR, &il->status); |
46bc8d4b | 4706 | wake_up(&il->wait_command_queue); |
dd6d2a8a SG |
4707 | /* |
4708 | * Keep the restart process from trying to send host | |
4709 | * commands by clearing the INIT status bit | |
4710 | */ | |
a6766ccd | 4711 | clear_bit(S_READY, &il->status); |
46bc8d4b | 4712 | queue_work(il->workqueue, &il->restart); |
dd6d2a8a | 4713 | |
be663ab6 WYG |
4714 | return 0; |
4715 | } | |
788f7a56 | 4716 | EXPORT_SYMBOL(il_force_reset); |
be663ab6 WYG |
4717 | |
4718 | int | |
e7392364 | 4719 | il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
be663ab6 WYG |
4720 | enum nl80211_iftype newtype, bool newp2p) |
4721 | { | |
46bc8d4b | 4722 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
4723 | int err; |
4724 | ||
46bc8d4b | 4725 | mutex_lock(&il->mutex); |
9ce7b73c SG |
4726 | D_MAC80211("enter: type %d, addr %pM newtype %d newp2p %d\n", |
4727 | vif->type, vif->addr, newtype, newp2p); | |
4728 | ||
4729 | if (newp2p) { | |
4730 | err = -EOPNOTSUPP; | |
4731 | goto out; | |
4732 | } | |
be663ab6 | 4733 | |
83007196 | 4734 | if (!il->vif || !il_is_ready_rf(il)) { |
ffd8c746 JB |
4735 | /* |
4736 | * Huh? But wait ... this can maybe happen when | |
4737 | * we're in the middle of a firmware restart! | |
4738 | */ | |
4739 | err = -EBUSY; | |
4740 | goto out; | |
4741 | } | |
4742 | ||
be663ab6 | 4743 | /* success */ |
be663ab6 | 4744 | vif->type = newtype; |
8c9c48d5 | 4745 | vif->p2p = false; |
fa4cffcb SG |
4746 | il->iw_mode = newtype; |
4747 | il_teardown_interface(il, vif); | |
be663ab6 WYG |
4748 | err = 0; |
4749 | ||
e7392364 | 4750 | out: |
9ce7b73c | 4751 | D_MAC80211("leave err %d\n", err); |
46bc8d4b | 4752 | mutex_unlock(&il->mutex); |
9ce7b73c | 4753 | |
be663ab6 WYG |
4754 | return err; |
4755 | } | |
e2ebc833 | 4756 | EXPORT_SYMBOL(il_mac_change_interface); |
be663ab6 | 4757 | |
77be2c54 EG |
4758 | void il_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
4759 | u32 queues, bool drop) | |
70277f47 SG |
4760 | { |
4761 | struct il_priv *il = hw->priv; | |
4762 | unsigned long timeout = jiffies + msecs_to_jiffies(500); | |
4763 | int i; | |
4764 | ||
4765 | mutex_lock(&il->mutex); | |
4766 | D_MAC80211("enter\n"); | |
4767 | ||
4768 | if (il->txq == NULL) | |
4769 | goto out; | |
4770 | ||
4771 | for (i = 0; i < il->hw_params.max_txq_num; i++) { | |
4772 | struct il_queue *q; | |
4773 | ||
4774 | if (i == il->cmd_queue) | |
4775 | continue; | |
4776 | ||
4777 | q = &il->txq[i].q; | |
4778 | if (q->read_ptr == q->write_ptr) | |
4779 | continue; | |
4780 | ||
4781 | if (time_after(jiffies, timeout)) { | |
4782 | IL_ERR("Failed to flush queue %d\n", q->id); | |
4783 | break; | |
4784 | } | |
4785 | ||
4786 | msleep(20); | |
4787 | } | |
4788 | out: | |
4789 | D_MAC80211("leave\n"); | |
4790 | mutex_unlock(&il->mutex); | |
4791 | } | |
4792 | EXPORT_SYMBOL(il_mac_flush); | |
4793 | ||
be663ab6 WYG |
4794 | /* |
4795 | * On every watchdog tick we check (latest) time stamp. If it does not | |
4796 | * change during timeout period and queue is not empty we reset firmware. | |
4797 | */ | |
e7392364 SG |
4798 | static int |
4799 | il_check_stuck_queue(struct il_priv *il, int cnt) | |
be663ab6 | 4800 | { |
46bc8d4b | 4801 | struct il_tx_queue *txq = &il->txq[cnt]; |
e2ebc833 | 4802 | struct il_queue *q = &txq->q; |
be663ab6 | 4803 | unsigned long timeout; |
26b6da6b | 4804 | unsigned long now = jiffies; |
be663ab6 WYG |
4805 | int ret; |
4806 | ||
4807 | if (q->read_ptr == q->write_ptr) { | |
26b6da6b | 4808 | txq->time_stamp = now; |
be663ab6 WYG |
4809 | return 0; |
4810 | } | |
4811 | ||
e7392364 SG |
4812 | timeout = |
4813 | txq->time_stamp + | |
89ef1ed2 | 4814 | msecs_to_jiffies(il->cfg->wd_timeout); |
be663ab6 | 4815 | |
26b6da6b | 4816 | if (time_after(now, timeout)) { |
e7392364 | 4817 | IL_ERR("Queue %d stuck for %u ms.\n", q->id, |
26b6da6b | 4818 | jiffies_to_msecs(now - txq->time_stamp)); |
46bc8d4b | 4819 | ret = il_force_reset(il, false); |
be663ab6 WYG |
4820 | return (ret == -EAGAIN) ? 0 : 1; |
4821 | } | |
4822 | ||
4823 | return 0; | |
4824 | } | |
4825 | ||
4826 | /* | |
4827 | * Making watchdog tick be a quarter of timeout assure we will | |
4828 | * discover the queue hung between timeout and 1.25*timeout | |
4829 | */ | |
e2ebc833 | 4830 | #define IL_WD_TICK(timeout) ((timeout) / 4) |
be663ab6 WYG |
4831 | |
4832 | /* | |
4833 | * Watchdog timer callback, we check each tx queue for stuck, if if hung | |
4834 | * we reset the firmware. If everything is fine just rearm the timer. | |
4835 | */ | |
e7392364 SG |
4836 | void |
4837 | il_bg_watchdog(unsigned long data) | |
be663ab6 | 4838 | { |
46bc8d4b | 4839 | struct il_priv *il = (struct il_priv *)data; |
be663ab6 WYG |
4840 | int cnt; |
4841 | unsigned long timeout; | |
4842 | ||
a6766ccd | 4843 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
4844 | return; |
4845 | ||
89ef1ed2 | 4846 | timeout = il->cfg->wd_timeout; |
be663ab6 WYG |
4847 | if (timeout == 0) |
4848 | return; | |
4849 | ||
4850 | /* monitor and check for stuck cmd queue */ | |
46bc8d4b | 4851 | if (il_check_stuck_queue(il, il->cmd_queue)) |
be663ab6 WYG |
4852 | return; |
4853 | ||
4854 | /* monitor and check for other stuck queues */ | |
c2ca7d92 SG |
4855 | for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) { |
4856 | /* skip as we already checked the command queue */ | |
4857 | if (cnt == il->cmd_queue) | |
4858 | continue; | |
4859 | if (il_check_stuck_queue(il, cnt)) | |
4860 | return; | |
be663ab6 WYG |
4861 | } |
4862 | ||
e7392364 SG |
4863 | mod_timer(&il->watchdog, |
4864 | jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); | |
be663ab6 | 4865 | } |
e2ebc833 | 4866 | EXPORT_SYMBOL(il_bg_watchdog); |
be663ab6 | 4867 | |
e7392364 SG |
4868 | void |
4869 | il_setup_watchdog(struct il_priv *il) | |
be663ab6 | 4870 | { |
89ef1ed2 | 4871 | unsigned int timeout = il->cfg->wd_timeout; |
be663ab6 WYG |
4872 | |
4873 | if (timeout) | |
46bc8d4b | 4874 | mod_timer(&il->watchdog, |
e2ebc833 | 4875 | jiffies + msecs_to_jiffies(IL_WD_TICK(timeout))); |
be663ab6 | 4876 | else |
46bc8d4b | 4877 | del_timer(&il->watchdog); |
be663ab6 | 4878 | } |
e2ebc833 | 4879 | EXPORT_SYMBOL(il_setup_watchdog); |
be663ab6 WYG |
4880 | |
4881 | /* | |
4882 | * extended beacon time format | |
4883 | * time in usec will be changed into a 32-bit value in extended:internal format | |
4884 | * the extended part is the beacon counts | |
4885 | * the internal part is the time in usec within one beacon interval | |
4886 | */ | |
4887 | u32 | |
e7392364 | 4888 | il_usecs_to_beacons(struct il_priv *il, u32 usec, u32 beacon_interval) |
be663ab6 WYG |
4889 | { |
4890 | u32 quot; | |
4891 | u32 rem; | |
4892 | u32 interval = beacon_interval * TIME_UNIT; | |
4893 | ||
4894 | if (!interval || !usec) | |
4895 | return 0; | |
4896 | ||
e7392364 SG |
4897 | quot = |
4898 | (usec / | |
4899 | interval) & (il_beacon_time_mask_high(il, | |
4900 | il->hw_params. | |
4901 | beacon_time_tsf_bits) >> il-> | |
4902 | hw_params.beacon_time_tsf_bits); | |
4903 | rem = | |
4904 | (usec % interval) & il_beacon_time_mask_low(il, | |
4905 | il->hw_params. | |
4906 | beacon_time_tsf_bits); | |
be663ab6 | 4907 | |
46bc8d4b | 4908 | return (quot << il->hw_params.beacon_time_tsf_bits) + rem; |
be663ab6 | 4909 | } |
e2ebc833 | 4910 | EXPORT_SYMBOL(il_usecs_to_beacons); |
be663ab6 WYG |
4911 | |
4912 | /* base is usually what we get from ucode with each received frame, | |
4913 | * the same as HW timer counter counting down | |
4914 | */ | |
e7392364 | 4915 | __le32 |
1722f8e1 | 4916 | il_add_beacon_time(struct il_priv *il, u32 base, u32 addon, |
e7392364 | 4917 | u32 beacon_interval) |
be663ab6 | 4918 | { |
46bc8d4b | 4919 | u32 base_low = base & il_beacon_time_mask_low(il, |
e7392364 SG |
4920 | il->hw_params. |
4921 | beacon_time_tsf_bits); | |
46bc8d4b | 4922 | u32 addon_low = addon & il_beacon_time_mask_low(il, |
e7392364 SG |
4923 | il->hw_params. |
4924 | beacon_time_tsf_bits); | |
be663ab6 | 4925 | u32 interval = beacon_interval * TIME_UNIT; |
46bc8d4b | 4926 | u32 res = (base & il_beacon_time_mask_high(il, |
e7392364 SG |
4927 | il->hw_params. |
4928 | beacon_time_tsf_bits)) + | |
4929 | (addon & il_beacon_time_mask_high(il, | |
4930 | il->hw_params. | |
4931 | beacon_time_tsf_bits)); | |
be663ab6 WYG |
4932 | |
4933 | if (base_low > addon_low) | |
4934 | res += base_low - addon_low; | |
4935 | else if (base_low < addon_low) { | |
4936 | res += interval + base_low - addon_low; | |
46bc8d4b | 4937 | res += (1 << il->hw_params.beacon_time_tsf_bits); |
be663ab6 | 4938 | } else |
46bc8d4b | 4939 | res += (1 << il->hw_params.beacon_time_tsf_bits); |
be663ab6 WYG |
4940 | |
4941 | return cpu_to_le32(res); | |
4942 | } | |
e2ebc833 | 4943 | EXPORT_SYMBOL(il_add_beacon_time); |
be663ab6 | 4944 | |
e82add55 | 4945 | #ifdef CONFIG_PM_SLEEP |
be663ab6 | 4946 | |
450e9038 | 4947 | static int |
e7392364 | 4948 | il_pci_suspend(struct device *device) |
be663ab6 WYG |
4949 | { |
4950 | struct pci_dev *pdev = to_pci_dev(device); | |
46bc8d4b | 4951 | struct il_priv *il = pci_get_drvdata(pdev); |
be663ab6 WYG |
4952 | |
4953 | /* | |
4954 | * This function is called when system goes into suspend state | |
e2ebc833 SG |
4955 | * mac80211 will call il_mac_stop() from the mac80211 suspend function |
4956 | * first but since il_mac_stop() has no knowledge of who the caller is, | |
be663ab6 WYG |
4957 | * it will not call apm_ops.stop() to stop the DMA operation. |
4958 | * Calling apm_ops.stop here to make sure we stop the DMA. | |
4959 | */ | |
46bc8d4b | 4960 | il_apm_stop(il); |
be663ab6 WYG |
4961 | |
4962 | return 0; | |
4963 | } | |
be663ab6 | 4964 | |
450e9038 | 4965 | static int |
e7392364 | 4966 | il_pci_resume(struct device *device) |
be663ab6 WYG |
4967 | { |
4968 | struct pci_dev *pdev = to_pci_dev(device); | |
46bc8d4b | 4969 | struct il_priv *il = pci_get_drvdata(pdev); |
be663ab6 WYG |
4970 | bool hw_rfkill = false; |
4971 | ||
4972 | /* | |
4973 | * We disable the RETRY_TIMEOUT register (0x41) to keep | |
4974 | * PCI Tx retries from interfering with C3 CPU state. | |
4975 | */ | |
4976 | pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); | |
4977 | ||
46bc8d4b | 4978 | il_enable_interrupts(il); |
be663ab6 | 4979 | |
e7392364 | 4980 | if (!(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
be663ab6 WYG |
4981 | hw_rfkill = true; |
4982 | ||
4983 | if (hw_rfkill) | |
bc269a8e | 4984 | set_bit(S_RFKILL, &il->status); |
be663ab6 | 4985 | else |
bc269a8e | 4986 | clear_bit(S_RFKILL, &il->status); |
be663ab6 | 4987 | |
46bc8d4b | 4988 | wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rfkill); |
be663ab6 WYG |
4989 | |
4990 | return 0; | |
4991 | } | |
be663ab6 | 4992 | |
450e9038 | 4993 | SIMPLE_DEV_PM_OPS(il_pm_ops, il_pci_suspend, il_pci_resume); |
e2ebc833 | 4994 | EXPORT_SYMBOL(il_pm_ops); |
be663ab6 | 4995 | |
e82add55 | 4996 | #endif /* CONFIG_PM_SLEEP */ |
be663ab6 WYG |
4997 | |
4998 | static void | |
83007196 | 4999 | il_update_qos(struct il_priv *il) |
be663ab6 | 5000 | { |
a6766ccd | 5001 | if (test_bit(S_EXIT_PENDING, &il->status)) |
be663ab6 WYG |
5002 | return; |
5003 | ||
8d44f2bd | 5004 | il->qos_data.def_qos_parm.qos_flags = 0; |
be663ab6 | 5005 | |
8d44f2bd SG |
5006 | if (il->qos_data.qos_active) |
5007 | il->qos_data.def_qos_parm.qos_flags |= | |
e7392364 | 5008 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; |
be663ab6 | 5009 | |
1c03c462 | 5010 | if (il->ht.enabled) |
8d44f2bd | 5011 | il->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; |
be663ab6 | 5012 | |
58de00a4 | 5013 | D_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
8d44f2bd | 5014 | il->qos_data.qos_active, il->qos_data.def_qos_parm.qos_flags); |
be663ab6 | 5015 | |
b96ed60c | 5016 | il_send_cmd_pdu_async(il, C_QOS_PARAM, sizeof(struct il_qosparam_cmd), |
8d44f2bd | 5017 | &il->qos_data.def_qos_parm, NULL); |
be663ab6 WYG |
5018 | } |
5019 | ||
5020 | /** | |
e2ebc833 | 5021 | * il_mac_config - mac80211 config callback |
be663ab6 | 5022 | */ |
e7392364 SG |
5023 | int |
5024 | il_mac_config(struct ieee80211_hw *hw, u32 changed) | |
be663ab6 | 5025 | { |
46bc8d4b | 5026 | struct il_priv *il = hw->priv; |
e2ebc833 | 5027 | const struct il_channel_info *ch_info; |
be663ab6 | 5028 | struct ieee80211_conf *conf = &hw->conf; |
675a0b04 | 5029 | struct ieee80211_channel *channel = conf->chandef.chan; |
46bc8d4b | 5030 | struct il_ht_config *ht_conf = &il->current_ht_config; |
be663ab6 WYG |
5031 | unsigned long flags = 0; |
5032 | int ret = 0; | |
5033 | u16 ch; | |
5034 | int scan_active = 0; | |
7c2cde2e | 5035 | bool ht_changed = false; |
be663ab6 | 5036 | |
46bc8d4b | 5037 | mutex_lock(&il->mutex); |
9ce7b73c | 5038 | D_MAC80211("enter: channel %d changed 0x%X\n", channel->hw_value, |
e7392364 | 5039 | changed); |
be663ab6 | 5040 | |
a6766ccd | 5041 | if (unlikely(test_bit(S_SCANNING, &il->status))) { |
be663ab6 | 5042 | scan_active = 1; |
58de00a4 | 5043 | D_MAC80211("scan active\n"); |
be663ab6 WYG |
5044 | } |
5045 | ||
e7392364 SG |
5046 | if (changed & |
5047 | (IEEE80211_CONF_CHANGE_SMPS | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
be663ab6 | 5048 | /* mac80211 uses static for non-HT which is what we want */ |
46bc8d4b | 5049 | il->current_ht_config.smps = conf->smps_mode; |
be663ab6 WYG |
5050 | |
5051 | /* | |
5052 | * Recalculate chain counts. | |
5053 | * | |
5054 | * If monitor mode is enabled then mac80211 will | |
5055 | * set up the SM PS mode to OFF if an HT channel is | |
5056 | * configured. | |
5057 | */ | |
c9363551 SG |
5058 | if (il->ops->set_rxon_chain) |
5059 | il->ops->set_rxon_chain(il); | |
be663ab6 WYG |
5060 | } |
5061 | ||
5062 | /* during scanning mac80211 will delay channel setting until | |
5063 | * scan finish with changed = 0 | |
5064 | */ | |
5065 | if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { | |
17d6e557 | 5066 | |
be663ab6 WYG |
5067 | if (scan_active) |
5068 | goto set_ch_out; | |
5069 | ||
5070 | ch = channel->hw_value; | |
46bc8d4b | 5071 | ch_info = il_get_channel_info(il, channel->band, ch); |
e2ebc833 | 5072 | if (!il_is_channel_valid(ch_info)) { |
58de00a4 | 5073 | D_MAC80211("leave - invalid channel\n"); |
be663ab6 WYG |
5074 | ret = -EINVAL; |
5075 | goto set_ch_out; | |
5076 | } | |
5077 | ||
46bc8d4b | 5078 | if (il->iw_mode == NL80211_IFTYPE_ADHOC && |
e2ebc833 | 5079 | !il_is_channel_ibss(ch_info)) { |
58de00a4 | 5080 | D_MAC80211("leave - not IBSS channel\n"); |
eb85de3f SG |
5081 | ret = -EINVAL; |
5082 | goto set_ch_out; | |
5083 | } | |
5084 | ||
46bc8d4b | 5085 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 5086 | |
17d6e557 | 5087 | /* Configure HT40 channels */ |
1c03c462 SG |
5088 | if (il->ht.enabled != conf_is_ht(conf)) { |
5089 | il->ht.enabled = conf_is_ht(conf); | |
17d6e557 SG |
5090 | ht_changed = true; |
5091 | } | |
1c03c462 | 5092 | if (il->ht.enabled) { |
17d6e557 | 5093 | if (conf_is_ht40_minus(conf)) { |
1c03c462 | 5094 | il->ht.extension_chan_offset = |
e7392364 | 5095 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
1c03c462 | 5096 | il->ht.is_40mhz = true; |
17d6e557 | 5097 | } else if (conf_is_ht40_plus(conf)) { |
1c03c462 | 5098 | il->ht.extension_chan_offset = |
e7392364 | 5099 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
1c03c462 | 5100 | il->ht.is_40mhz = true; |
17d6e557 | 5101 | } else { |
1c03c462 | 5102 | il->ht.extension_chan_offset = |
e7392364 | 5103 | IEEE80211_HT_PARAM_CHA_SEC_NONE; |
1c03c462 | 5104 | il->ht.is_40mhz = false; |
17d6e557 SG |
5105 | } |
5106 | } else | |
1c03c462 | 5107 | il->ht.is_40mhz = false; |
be663ab6 | 5108 | |
17d6e557 SG |
5109 | /* |
5110 | * Default to no protection. Protection mode will | |
5111 | * later be set from BSS config in il_ht_conf | |
5112 | */ | |
1c03c462 | 5113 | il->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; |
be663ab6 | 5114 | |
17d6e557 SG |
5115 | /* if we are switching from ht to 2.4 clear flags |
5116 | * from any ht related info since 2.4 does not | |
5117 | * support ht */ | |
c8b03958 SG |
5118 | if ((le16_to_cpu(il->staging.channel) != ch)) |
5119 | il->staging.flags = 0; | |
be663ab6 | 5120 | |
83007196 | 5121 | il_set_rxon_channel(il, channel); |
17d6e557 | 5122 | il_set_rxon_ht(il, ht_conf); |
be663ab6 | 5123 | |
83007196 | 5124 | il_set_flags_for_band(il, channel->band, il->vif); |
be663ab6 | 5125 | |
46bc8d4b | 5126 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 5127 | |
c9363551 SG |
5128 | if (il->ops->update_bcast_stations) |
5129 | ret = il->ops->update_bcast_stations(il); | |
be663ab6 | 5130 | |
e7392364 | 5131 | set_ch_out: |
be663ab6 WYG |
5132 | /* The list of supported rates and rate mask can be different |
5133 | * for each band; since the band may have changed, reset | |
5134 | * the rate mask to what mac80211 lists */ | |
46bc8d4b | 5135 | il_set_rate(il); |
be663ab6 WYG |
5136 | } |
5137 | ||
e7392364 | 5138 | if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) { |
dbdac2b5 | 5139 | il->power_data.ps_disabled = !(conf->flags & IEEE80211_CONF_PS); |
46bc8d4b | 5140 | ret = il_power_update_mode(il, false); |
be663ab6 | 5141 | if (ret) |
58de00a4 | 5142 | D_MAC80211("Error setting sleep level\n"); |
be663ab6 WYG |
5143 | } |
5144 | ||
5145 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
e7392364 SG |
5146 | D_MAC80211("TX Power old=%d new=%d\n", il->tx_power_user_lmt, |
5147 | conf->power_level); | |
be663ab6 | 5148 | |
46bc8d4b | 5149 | il_set_tx_power(il, conf->power_level, false); |
be663ab6 WYG |
5150 | } |
5151 | ||
46bc8d4b | 5152 | if (!il_is_ready(il)) { |
58de00a4 | 5153 | D_MAC80211("leave - not ready\n"); |
be663ab6 WYG |
5154 | goto out; |
5155 | } | |
5156 | ||
5157 | if (scan_active) | |
5158 | goto out; | |
5159 | ||
c8b03958 | 5160 | if (memcmp(&il->active, &il->staging, sizeof(il->staging))) |
83007196 | 5161 | il_commit_rxon(il); |
17d6e557 SG |
5162 | else |
5163 | D_INFO("Not re-sending same RXON configuration.\n"); | |
5164 | if (ht_changed) | |
83007196 | 5165 | il_update_qos(il); |
be663ab6 WYG |
5166 | |
5167 | out: | |
9ce7b73c | 5168 | D_MAC80211("leave ret %d\n", ret); |
46bc8d4b | 5169 | mutex_unlock(&il->mutex); |
9ce7b73c | 5170 | |
be663ab6 WYG |
5171 | return ret; |
5172 | } | |
e2ebc833 | 5173 | EXPORT_SYMBOL(il_mac_config); |
be663ab6 | 5174 | |
e7392364 SG |
5175 | void |
5176 | il_mac_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
be663ab6 | 5177 | { |
46bc8d4b | 5178 | struct il_priv *il = hw->priv; |
be663ab6 | 5179 | unsigned long flags; |
be663ab6 | 5180 | |
46bc8d4b | 5181 | mutex_lock(&il->mutex); |
9ce7b73c | 5182 | D_MAC80211("enter: type %d, addr %pM\n", vif->type, vif->addr); |
be663ab6 | 5183 | |
46bc8d4b | 5184 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 5185 | |
9ce7b73c | 5186 | memset(&il->current_ht_config, 0, sizeof(struct il_ht_config)); |
be663ab6 WYG |
5187 | |
5188 | /* new association get rid of ibss beacon skb */ | |
46bc8d4b SG |
5189 | if (il->beacon_skb) |
5190 | dev_kfree_skb(il->beacon_skb); | |
46bc8d4b | 5191 | il->beacon_skb = NULL; |
46bc8d4b | 5192 | il->timestamp = 0; |
be663ab6 | 5193 | |
46bc8d4b | 5194 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 5195 | |
46bc8d4b SG |
5196 | il_scan_cancel_timeout(il, 100); |
5197 | if (!il_is_ready_rf(il)) { | |
58de00a4 | 5198 | D_MAC80211("leave - not ready\n"); |
46bc8d4b | 5199 | mutex_unlock(&il->mutex); |
be663ab6 WYG |
5200 | return; |
5201 | } | |
5202 | ||
9ce7b73c | 5203 | /* we are restarting association process */ |
c8b03958 | 5204 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
83007196 | 5205 | il_commit_rxon(il); |
be663ab6 | 5206 | |
46bc8d4b | 5207 | il_set_rate(il); |
be663ab6 | 5208 | |
58de00a4 | 5209 | D_MAC80211("leave\n"); |
9ce7b73c | 5210 | mutex_unlock(&il->mutex); |
be663ab6 | 5211 | } |
e2ebc833 | 5212 | EXPORT_SYMBOL(il_mac_reset_tsf); |
be663ab6 | 5213 | |
e7392364 SG |
5214 | static void |
5215 | il_ht_conf(struct il_priv *il, struct ieee80211_vif *vif) | |
be663ab6 | 5216 | { |
46bc8d4b | 5217 | struct il_ht_config *ht_conf = &il->current_ht_config; |
be663ab6 WYG |
5218 | struct ieee80211_sta *sta; |
5219 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; | |
be663ab6 | 5220 | |
58de00a4 | 5221 | D_ASSOC("enter:\n"); |
be663ab6 | 5222 | |
1c03c462 | 5223 | if (!il->ht.enabled) |
be663ab6 WYG |
5224 | return; |
5225 | ||
1c03c462 | 5226 | il->ht.protection = |
e7392364 | 5227 | bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; |
1c03c462 | 5228 | il->ht.non_gf_sta_present = |
e7392364 SG |
5229 | !!(bss_conf-> |
5230 | ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); | |
be663ab6 WYG |
5231 | |
5232 | ht_conf->single_chain_sufficient = false; | |
5233 | ||
5234 | switch (vif->type) { | |
5235 | case NL80211_IFTYPE_STATION: | |
5236 | rcu_read_lock(); | |
5237 | sta = ieee80211_find_sta(vif, bss_conf->bssid); | |
5238 | if (sta) { | |
5239 | struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; | |
5240 | int maxstreams; | |
5241 | ||
e7392364 SG |
5242 | maxstreams = |
5243 | (ht_cap->mcs. | |
5244 | tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
5245 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
be663ab6 WYG |
5246 | maxstreams += 1; |
5247 | ||
232913b5 SG |
5248 | if (ht_cap->mcs.rx_mask[1] == 0 && |
5249 | ht_cap->mcs.rx_mask[2] == 0) | |
be663ab6 WYG |
5250 | ht_conf->single_chain_sufficient = true; |
5251 | if (maxstreams <= 1) | |
5252 | ht_conf->single_chain_sufficient = true; | |
5253 | } else { | |
5254 | /* | |
5255 | * If at all, this can only happen through a race | |
5256 | * when the AP disconnects us while we're still | |
5257 | * setting up the connection, in that case mac80211 | |
5258 | * will soon tell us about that. | |
5259 | */ | |
5260 | ht_conf->single_chain_sufficient = true; | |
5261 | } | |
5262 | rcu_read_unlock(); | |
5263 | break; | |
5264 | case NL80211_IFTYPE_ADHOC: | |
5265 | ht_conf->single_chain_sufficient = true; | |
5266 | break; | |
5267 | default: | |
5268 | break; | |
5269 | } | |
5270 | ||
58de00a4 | 5271 | D_ASSOC("leave\n"); |
be663ab6 WYG |
5272 | } |
5273 | ||
e7392364 SG |
5274 | static inline void |
5275 | il_set_no_assoc(struct il_priv *il, struct ieee80211_vif *vif) | |
be663ab6 | 5276 | { |
be663ab6 WYG |
5277 | /* |
5278 | * inform the ucode that there is no longer an | |
5279 | * association and that no more packets should be | |
5280 | * sent | |
5281 | */ | |
c8b03958 SG |
5282 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
5283 | il->staging.assoc_id = 0; | |
83007196 | 5284 | il_commit_rxon(il); |
be663ab6 WYG |
5285 | } |
5286 | ||
e7392364 SG |
5287 | static void |
5288 | il_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
be663ab6 | 5289 | { |
46bc8d4b | 5290 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
5291 | unsigned long flags; |
5292 | __le64 timestamp; | |
5293 | struct sk_buff *skb = ieee80211_beacon_get(hw, vif); | |
5294 | ||
5295 | if (!skb) | |
5296 | return; | |
5297 | ||
58de00a4 | 5298 | D_MAC80211("enter\n"); |
be663ab6 | 5299 | |
46bc8d4b | 5300 | lockdep_assert_held(&il->mutex); |
be663ab6 | 5301 | |
83007196 SG |
5302 | if (!il->beacon_enabled) { |
5303 | IL_ERR("update beacon with no beaconing enabled\n"); | |
be663ab6 WYG |
5304 | dev_kfree_skb(skb); |
5305 | return; | |
5306 | } | |
5307 | ||
46bc8d4b | 5308 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 | 5309 | |
46bc8d4b SG |
5310 | if (il->beacon_skb) |
5311 | dev_kfree_skb(il->beacon_skb); | |
be663ab6 | 5312 | |
46bc8d4b | 5313 | il->beacon_skb = skb; |
be663ab6 WYG |
5314 | |
5315 | timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; | |
46bc8d4b | 5316 | il->timestamp = le64_to_cpu(timestamp); |
be663ab6 | 5317 | |
58de00a4 | 5318 | D_MAC80211("leave\n"); |
46bc8d4b | 5319 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 | 5320 | |
46bc8d4b | 5321 | if (!il_is_ready_rf(il)) { |
58de00a4 | 5322 | D_MAC80211("leave - RF not ready\n"); |
be663ab6 WYG |
5323 | return; |
5324 | } | |
5325 | ||
c9363551 | 5326 | il->ops->post_associate(il); |
be663ab6 WYG |
5327 | } |
5328 | ||
e7392364 SG |
5329 | void |
5330 | il_mac_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
5331 | struct ieee80211_bss_conf *bss_conf, u32 changes) | |
be663ab6 | 5332 | { |
46bc8d4b | 5333 | struct il_priv *il = hw->priv; |
be663ab6 WYG |
5334 | int ret; |
5335 | ||
46bc8d4b | 5336 | mutex_lock(&il->mutex); |
9ce7b73c | 5337 | D_MAC80211("enter: changes 0x%x\n", changes); |
be663ab6 | 5338 | |
46bc8d4b | 5339 | if (!il_is_alive(il)) { |
9ce7b73c | 5340 | D_MAC80211("leave - not alive\n"); |
46bc8d4b | 5341 | mutex_unlock(&il->mutex); |
28a6e577 SG |
5342 | return; |
5343 | } | |
5344 | ||
be663ab6 WYG |
5345 | if (changes & BSS_CHANGED_QOS) { |
5346 | unsigned long flags; | |
5347 | ||
46bc8d4b | 5348 | spin_lock_irqsave(&il->lock, flags); |
8d44f2bd | 5349 | il->qos_data.qos_active = bss_conf->qos; |
83007196 | 5350 | il_update_qos(il); |
46bc8d4b | 5351 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 WYG |
5352 | } |
5353 | ||
5354 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
83007196 | 5355 | /* FIXME: can we remove beacon_enabled ? */ |
be663ab6 | 5356 | if (vif->bss_conf.enable_beacon) |
83007196 | 5357 | il->beacon_enabled = true; |
be663ab6 | 5358 | else |
83007196 | 5359 | il->beacon_enabled = false; |
be663ab6 WYG |
5360 | } |
5361 | ||
5362 | if (changes & BSS_CHANGED_BSSID) { | |
58de00a4 | 5363 | D_MAC80211("BSSID %pM\n", bss_conf->bssid); |
be663ab6 | 5364 | |
8cdbab7f SG |
5365 | /* |
5366 | * On passive channel we wait with blocked queues to see if | |
5367 | * there is traffic on that channel. If no frame will be | |
5368 | * received (what is very unlikely since scan detects AP on | |
5369 | * that channel, but theoretically possible), mac80211 associate | |
5370 | * procedure will time out and mac80211 will call us with NULL | |
5371 | * bssid. We have to unblock queues on such condition. | |
5372 | */ | |
5373 | if (is_zero_ether_addr(bss_conf->bssid)) | |
5374 | il_wake_queues_by_reason(il, IL_STOP_REASON_PASSIVE); | |
5375 | ||
be663ab6 | 5376 | /* |
e92109be SG |
5377 | * If there is currently a HW scan going on in the background, |
5378 | * then we need to cancel it, otherwise sometimes we are not | |
5379 | * able to authenticate (FIXME: why ?) | |
be663ab6 | 5380 | */ |
46bc8d4b | 5381 | if (il_scan_cancel_timeout(il, 100)) { |
9ce7b73c | 5382 | D_MAC80211("leave - scan abort failed\n"); |
46bc8d4b | 5383 | mutex_unlock(&il->mutex); |
be663ab6 WYG |
5384 | return; |
5385 | } | |
5386 | ||
5387 | /* mac80211 only sets assoc when in STATION mode */ | |
e92109be | 5388 | memcpy(il->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); |
be663ab6 | 5389 | |
e92109be SG |
5390 | /* FIXME: currently needed in a few places */ |
5391 | memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); | |
be663ab6 WYG |
5392 | } |
5393 | ||
5394 | /* | |
5395 | * This needs to be after setting the BSSID in case | |
5396 | * mac80211 decides to do both changes at once because | |
5397 | * it will invoke post_associate. | |
5398 | */ | |
232913b5 | 5399 | if (vif->type == NL80211_IFTYPE_ADHOC && (changes & BSS_CHANGED_BEACON)) |
e2ebc833 | 5400 | il_beacon_update(hw, vif); |
be663ab6 WYG |
5401 | |
5402 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { | |
e7392364 | 5403 | D_MAC80211("ERP_PREAMBLE %d\n", bss_conf->use_short_preamble); |
be663ab6 | 5404 | if (bss_conf->use_short_preamble) |
c8b03958 | 5405 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 | 5406 | else |
c8b03958 | 5407 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
be663ab6 WYG |
5408 | } |
5409 | ||
5410 | if (changes & BSS_CHANGED_ERP_CTS_PROT) { | |
e7392364 | 5411 | D_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot); |
232913b5 | 5412 | if (bss_conf->use_cts_prot && il->band != IEEE80211_BAND_5GHZ) |
c8b03958 | 5413 | il->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; |
be663ab6 | 5414 | else |
c8b03958 | 5415 | il->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; |
be663ab6 | 5416 | if (bss_conf->use_cts_prot) |
c8b03958 | 5417 | il->staging.flags |= RXON_FLG_SELF_CTS_EN; |
be663ab6 | 5418 | else |
c8b03958 | 5419 | il->staging.flags &= ~RXON_FLG_SELF_CTS_EN; |
be663ab6 WYG |
5420 | } |
5421 | ||
5422 | if (changes & BSS_CHANGED_BASIC_RATES) { | |
5423 | /* XXX use this information | |
5424 | * | |
e2ebc833 | 5425 | * To do that, remove code from il_set_rate() and put something |
be663ab6 WYG |
5426 | * like this here: |
5427 | * | |
e7392364 | 5428 | if (A-band) |
c8b03958 | 5429 | il->staging.ofdm_basic_rates = |
e7392364 SG |
5430 | bss_conf->basic_rates; |
5431 | else | |
c8b03958 | 5432 | il->staging.ofdm_basic_rates = |
e7392364 | 5433 | bss_conf->basic_rates >> 4; |
c8b03958 | 5434 | il->staging.cck_basic_rates = |
e7392364 | 5435 | bss_conf->basic_rates & 0xF; |
be663ab6 WYG |
5436 | */ |
5437 | } | |
5438 | ||
5439 | if (changes & BSS_CHANGED_HT) { | |
46bc8d4b | 5440 | il_ht_conf(il, vif); |
be663ab6 | 5441 | |
c9363551 SG |
5442 | if (il->ops->set_rxon_chain) |
5443 | il->ops->set_rxon_chain(il); | |
be663ab6 WYG |
5444 | } |
5445 | ||
5446 | if (changes & BSS_CHANGED_ASSOC) { | |
58de00a4 | 5447 | D_MAC80211("ASSOC %d\n", bss_conf->assoc); |
be663ab6 | 5448 | if (bss_conf->assoc) { |
8c358bcd | 5449 | il->timestamp = bss_conf->sync_tsf; |
be663ab6 | 5450 | |
46bc8d4b | 5451 | if (!il_is_rfkill(il)) |
c9363551 | 5452 | il->ops->post_associate(il); |
be663ab6 | 5453 | } else |
46bc8d4b | 5454 | il_set_no_assoc(il, vif); |
be663ab6 WYG |
5455 | } |
5456 | ||
c8b03958 | 5457 | if (changes && il_is_associated(il) && bss_conf->aid) { |
e7392364 | 5458 | D_MAC80211("Changes (%#x) while associated\n", changes); |
83007196 | 5459 | ret = il_send_rxon_assoc(il); |
be663ab6 WYG |
5460 | if (!ret) { |
5461 | /* Sync active_rxon with latest change. */ | |
c8b03958 | 5462 | memcpy((void *)&il->active, &il->staging, |
e7392364 | 5463 | sizeof(struct il_rxon_cmd)); |
be663ab6 WYG |
5464 | } |
5465 | } | |
5466 | ||
5467 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
5468 | if (vif->bss_conf.enable_beacon) { | |
c8b03958 | 5469 | memcpy(il->staging.bssid_addr, bss_conf->bssid, |
e7392364 | 5470 | ETH_ALEN); |
46bc8d4b | 5471 | memcpy(il->bssid, bss_conf->bssid, ETH_ALEN); |
c9363551 | 5472 | il->ops->config_ap(il); |
be663ab6 | 5473 | } else |
46bc8d4b | 5474 | il_set_no_assoc(il, vif); |
be663ab6 WYG |
5475 | } |
5476 | ||
5477 | if (changes & BSS_CHANGED_IBSS) { | |
9ce7b73c SG |
5478 | ret = il->ops->manage_ibss_station(il, vif, |
5479 | bss_conf->ibss_joined); | |
be663ab6 | 5480 | if (ret) |
9406f797 | 5481 | IL_ERR("failed to %s IBSS station %pM\n", |
e7392364 SG |
5482 | bss_conf->ibss_joined ? "add" : "remove", |
5483 | bss_conf->bssid); | |
be663ab6 WYG |
5484 | } |
5485 | ||
58de00a4 | 5486 | D_MAC80211("leave\n"); |
9ce7b73c | 5487 | mutex_unlock(&il->mutex); |
be663ab6 | 5488 | } |
e2ebc833 | 5489 | EXPORT_SYMBOL(il_mac_bss_info_changed); |
be663ab6 | 5490 | |
e7392364 SG |
5491 | irqreturn_t |
5492 | il_isr(int irq, void *data) | |
be663ab6 | 5493 | { |
46bc8d4b | 5494 | struct il_priv *il = data; |
be663ab6 WYG |
5495 | u32 inta, inta_mask; |
5496 | u32 inta_fh; | |
5497 | unsigned long flags; | |
46bc8d4b | 5498 | if (!il) |
be663ab6 WYG |
5499 | return IRQ_NONE; |
5500 | ||
46bc8d4b | 5501 | spin_lock_irqsave(&il->lock, flags); |
be663ab6 WYG |
5502 | |
5503 | /* Disable (but don't clear!) interrupts here to avoid | |
5504 | * back-to-back ISRs and sporadic interrupts from our NIC. | |
5505 | * If we have something to service, the tasklet will re-enable ints. | |
5506 | * If we *don't* have something, we'll re-enable before leaving here. */ | |
e7392364 | 5507 | inta_mask = _il_rd(il, CSR_INT_MASK); /* just for debug */ |
841b2cca | 5508 | _il_wr(il, CSR_INT_MASK, 0x00000000); |
be663ab6 WYG |
5509 | |
5510 | /* Discover which interrupts are active/pending */ | |
841b2cca SG |
5511 | inta = _il_rd(il, CSR_INT); |
5512 | inta_fh = _il_rd(il, CSR_FH_INT_STATUS); | |
be663ab6 WYG |
5513 | |
5514 | /* Ignore interrupt if there's nothing in NIC to service. | |
5515 | * This may be due to IRQ shared with another device, | |
5516 | * or due to sporadic interrupts thrown from our NIC. */ | |
5517 | if (!inta && !inta_fh) { | |
e7392364 | 5518 | D_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n"); |
be663ab6 WYG |
5519 | goto none; |
5520 | } | |
5521 | ||
232913b5 | 5522 | if (inta == 0xFFFFFFFF || (inta & 0xFFFFFFF0) == 0xa5a5a5a0) { |
be663ab6 WYG |
5523 | /* Hardware disappeared. It might have already raised |
5524 | * an interrupt */ | |
9406f797 | 5525 | IL_WARN("HARDWARE GONE?? INTA == 0x%08x\n", inta); |
be663ab6 WYG |
5526 | goto unplugged; |
5527 | } | |
5528 | ||
e7392364 SG |
5529 | D_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, inta_mask, |
5530 | inta_fh); | |
be663ab6 WYG |
5531 | |
5532 | inta &= ~CSR_INT_BIT_SCD; | |
5533 | ||
e2ebc833 | 5534 | /* il_irq_tasklet() will service interrupts and re-enable them */ |
be663ab6 | 5535 | if (likely(inta || inta_fh)) |
46bc8d4b | 5536 | tasklet_schedule(&il->irq_tasklet); |
be663ab6 WYG |
5537 | |
5538 | unplugged: | |
46bc8d4b | 5539 | spin_unlock_irqrestore(&il->lock, flags); |
be663ab6 WYG |
5540 | return IRQ_HANDLED; |
5541 | ||
5542 | none: | |
5543 | /* re-enable interrupts here since we don't have anything to service. */ | |
93fd74e3 | 5544 | /* only Re-enable if disabled by irq */ |
a6766ccd | 5545 | if (test_bit(S_INT_ENABLED, &il->status)) |
46bc8d4b SG |
5546 | il_enable_interrupts(il); |
5547 | spin_unlock_irqrestore(&il->lock, flags); | |
be663ab6 WYG |
5548 | return IRQ_NONE; |
5549 | } | |
e2ebc833 | 5550 | EXPORT_SYMBOL(il_isr); |
be663ab6 WYG |
5551 | |
5552 | /* | |
e2ebc833 | 5553 | * il_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this |
be663ab6 WYG |
5554 | * function. |
5555 | */ | |
e7392364 SG |
5556 | void |
5557 | il_tx_cmd_protection(struct il_priv *il, struct ieee80211_tx_info *info, | |
1722f8e1 | 5558 | __le16 fc, __le32 *tx_flags) |
be663ab6 WYG |
5559 | { |
5560 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { | |
5561 | *tx_flags |= TX_CMD_FLG_RTS_MSK; | |
5562 | *tx_flags &= ~TX_CMD_FLG_CTS_MSK; | |
5563 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
5564 | ||
5565 | if (!ieee80211_is_mgmt(fc)) | |
5566 | return; | |
5567 | ||
5568 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
5569 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
5570 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
5571 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
5572 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
5573 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
5574 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
5575 | break; | |
5576 | } | |
e7392364 SG |
5577 | } else if (info->control.rates[0]. |
5578 | flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { | |
be663ab6 WYG |
5579 | *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
5580 | *tx_flags |= TX_CMD_FLG_CTS_MSK; | |
5581 | *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; | |
5582 | } | |
5583 | } | |
e2ebc833 | 5584 | EXPORT_SYMBOL(il_tx_cmd_protection); |