1
2 /*
3 * Copyright (c) 2011 Atheros Communications Inc.
4 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21 #include <linux/moduleparam.h>
22 #include <linux/errno.h>
23 #include <linux/export.h>
24 #include <linux/of.h>
25 #include <linux/mmc/sdio_func.h>
26 #include <linux/vmalloc.h>
27
28 #include "core.h"
29 #include "cfg80211.h"
30 #include "target.h"
31 #include "debug.h"
32 #include "hif-ops.h"
33 #include "htc-ops.h"
34
35 static const struct ath6kl_hw hw_list[] = {
36 {
37 .id = AR6003_HW_2_0_VERSION,
38 .name = "ar6003 hw 2.0",
39 .dataset_patch_addr = 0x57e884,
40 .app_load_addr = 0x543180,
41 .board_ext_data_addr = 0x57e500,
42 .reserved_ram_size = 6912,
43 .refclk_hz = 26000000,
44 .uarttx_pin = 8,
45 .flags = ATH6KL_HW_SDIO_CRC_ERROR_WAR,
46
47 /* hw2.0 needs override address hardcoded */
48 .app_start_override_addr = 0x944C00,
49
50 .fw = {
51 .dir = AR6003_HW_2_0_FW_DIR,
52 .otp = AR6003_HW_2_0_OTP_FILE,
53 .fw = AR6003_HW_2_0_FIRMWARE_FILE,
54 .tcmd = AR6003_HW_2_0_TCMD_FIRMWARE_FILE,
55 .patch = AR6003_HW_2_0_PATCH_FILE,
56 },
57
58 .fw_board = AR6003_HW_2_0_BOARD_DATA_FILE,
59 .fw_default_board = AR6003_HW_2_0_DEFAULT_BOARD_DATA_FILE,
60 },
61 {
62 .id = AR6003_HW_2_1_1_VERSION,
63 .name = "ar6003 hw 2.1.1",
64 .dataset_patch_addr = 0x57ff74,
65 .app_load_addr = 0x1234,
66 .board_ext_data_addr = 0x542330,
67 .reserved_ram_size = 512,
68 .refclk_hz = 26000000,
69 .uarttx_pin = 8,
70 .testscript_addr = 0x57ef74,
71 .flags = ATH6KL_HW_SDIO_CRC_ERROR_WAR,
72
73 .fw = {
74 .dir = AR6003_HW_2_1_1_FW_DIR,
75 .otp = AR6003_HW_2_1_1_OTP_FILE,
76 .fw = AR6003_HW_2_1_1_FIRMWARE_FILE,
77 .tcmd = AR6003_HW_2_1_1_TCMD_FIRMWARE_FILE,
78 .patch = AR6003_HW_2_1_1_PATCH_FILE,
79 .utf = AR6003_HW_2_1_1_UTF_FIRMWARE_FILE,
80 .testscript = AR6003_HW_2_1_1_TESTSCRIPT_FILE,
81 },
82
83 .fw_board = AR6003_HW_2_1_1_BOARD_DATA_FILE,
84 .fw_default_board = AR6003_HW_2_1_1_DEFAULT_BOARD_DATA_FILE,
85 },
86 {
87 .id = AR6004_HW_1_0_VERSION,
88 .name = "ar6004 hw 1.0",
89 .dataset_patch_addr = 0x57e884,
90 .app_load_addr = 0x1234,
91 .board_ext_data_addr = 0x437000,
92 .reserved_ram_size = 19456,
93 .board_addr = 0x433900,
94 .refclk_hz = 26000000,
95 .uarttx_pin = 11,
96 .flags = 0,
97
98 .fw = {
99 .dir = AR6004_HW_1_0_FW_DIR,
100 .fw = AR6004_HW_1_0_FIRMWARE_FILE,
101 },
102
103 .fw_board = AR6004_HW_1_0_BOARD_DATA_FILE,
104 .fw_default_board = AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE,
105 },
106 {
107 .id = AR6004_HW_1_1_VERSION,
108 .name = "ar6004 hw 1.1",
109 .dataset_patch_addr = 0x57e884,
110 .app_load_addr = 0x1234,
111 .board_ext_data_addr = 0x437000,
112 .reserved_ram_size = 11264,
113 .board_addr = 0x43d400,
114 .refclk_hz = 40000000,
115 .uarttx_pin = 11,
116 .flags = 0,
117 .fw = {
118 .dir = AR6004_HW_1_1_FW_DIR,
119 .fw = AR6004_HW_1_1_FIRMWARE_FILE,
120 },
121
122 .fw_board = AR6004_HW_1_1_BOARD_DATA_FILE,
123 .fw_default_board = AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE,
124 },
125 {
126 .id = AR6004_HW_1_2_VERSION,
127 .name = "ar6004 hw 1.2",
128 .dataset_patch_addr = 0x436ecc,
129 .app_load_addr = 0x1234,
130 .board_ext_data_addr = 0x437000,
131 .reserved_ram_size = 9216,
132 .board_addr = 0x435c00,
133 .refclk_hz = 40000000,
134 .uarttx_pin = 11,
135 .flags = 0,
136
137 .fw = {
138 .dir = AR6004_HW_1_2_FW_DIR,
139 .fw = AR6004_HW_1_2_FIRMWARE_FILE,
140 },
141 .fw_board = AR6004_HW_1_2_BOARD_DATA_FILE,
142 .fw_default_board = AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE,
143 },
144 {
145 .id = AR6004_HW_1_3_VERSION,
146 .name = "ar6004 hw 1.3",
147 .dataset_patch_addr = 0x437860,
148 .app_load_addr = 0x1234,
149 .board_ext_data_addr = 0x437000,
150 .reserved_ram_size = 7168,
151 .board_addr = 0x436400,
152 .refclk_hz = 0,
153 .uarttx_pin = 11,
154 .flags = 0,
155
156 .fw = {
157 .dir = AR6004_HW_1_3_FW_DIR,
158 .fw = AR6004_HW_1_3_FIRMWARE_FILE,
159 .tcmd = AR6004_HW_1_3_TCMD_FIRMWARE_FILE,
160 .utf = AR6004_HW_1_3_UTF_FIRMWARE_FILE,
161 .testscript = AR6004_HW_1_3_TESTSCRIPT_FILE,
162 },
163
164 .fw_board = AR6004_HW_1_3_BOARD_DATA_FILE,
165 .fw_default_board = AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE,
166 },
167 {
168 .id = AR6004_HW_3_0_VERSION,
169 .name = "ar6004 hw 3.0",
170 .dataset_patch_addr = 0,
171 .app_load_addr = 0x1234,
172 .board_ext_data_addr = 0,
173 .reserved_ram_size = 7168,
174 .board_addr = 0x436400,
175 .testscript_addr = 0,
176 .uarttx_pin = 11,
177 .flags = 0,
178
179 .fw = {
180 .dir = AR6004_HW_3_0_FW_DIR,
181 .fw = AR6004_HW_3_0_FIRMWARE_FILE,
182 .tcmd = AR6004_HW_3_0_TCMD_FIRMWARE_FILE,
183 .utf = AR6004_HW_3_0_UTF_FIRMWARE_FILE,
184 .testscript = AR6004_HW_3_0_TESTSCRIPT_FILE,
185 },
186
187 .fw_board = AR6004_HW_3_0_BOARD_DATA_FILE,
188 .fw_default_board = AR6004_HW_3_0_DEFAULT_BOARD_DATA_FILE,
189 },
190 };
191
192 /*
193 * Include definitions here that can be used to tune the WLAN module
194 * behavior. Different customers can tune the behavior as per their needs,
195 * here.
196 */
197
198 /*
199 * This configuration item enable/disable keepalive support.
200 * Keepalive support: In the absence of any data traffic to AP, null
201 * frames will be sent to the AP at periodic interval, to keep the association
202 * active. This configuration item defines the periodic interval.
203 * Use value of zero to disable keepalive support
204 * Default: 60 seconds
205 */
206 #define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60
207
208 /*
209 * This configuration item sets the value of disconnect timeout
210 * Firmware delays sending the disconnec event to the host for this
211 * timeout after is gets disconnected from the current AP.
212 * If the firmware successly roams within the disconnect timeout
213 * it sends a new connect event
214 */
215 #define WLAN_CONFIG_DISCONNECT_TIMEOUT 10
216
217
218 #define ATH6KL_DATA_OFFSET 64
ath6kl_buf_alloc(int size)219 struct sk_buff *ath6kl_buf_alloc(int size)
220 {
221 struct sk_buff *skb;
222 u16 reserved;
223
224 /* Add chacheline space at front and back of buffer */
225 reserved = roundup((2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET +
226 sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES, 4);
227 skb = dev_alloc_skb(size + reserved);
228
229 if (skb)
230 skb_reserve(skb, reserved - L1_CACHE_BYTES);
231 return skb;
232 }
233
ath6kl_init_profile_info(struct ath6kl_vif * vif)234 void ath6kl_init_profile_info(struct ath6kl_vif *vif)
235 {
236 vif->ssid_len = 0;
237 memset(vif->ssid, 0, sizeof(vif->ssid));
238
239 vif->dot11_auth_mode = OPEN_AUTH;
240 vif->auth_mode = NONE_AUTH;
241 vif->prwise_crypto = NONE_CRYPT;
242 vif->prwise_crypto_len = 0;
243 vif->grp_crypto = NONE_CRYPT;
244 vif->grp_crypto_len = 0;
245 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
246 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
247 memset(vif->bssid, 0, sizeof(vif->bssid));
248 vif->bss_ch = 0;
249 }
250
ath6kl_set_host_app_area(struct ath6kl * ar)251 static int ath6kl_set_host_app_area(struct ath6kl *ar)
252 {
253 u32 address, data;
254 struct host_app_area host_app_area;
255
256 /* Fetch the address of the host_app_area_s
257 * instance in the host interest area */
258 address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest));
259 address = TARG_VTOP(ar->target_type, address);
260
261 if (ath6kl_diag_read32(ar, address, &data))
262 return -EIO;
263
264 address = TARG_VTOP(ar->target_type, data);
265 host_app_area.wmi_protocol_ver = cpu_to_le32(WMI_PROTOCOL_VERSION);
266 if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area,
267 sizeof(struct host_app_area)))
268 return -EIO;
269
270 return 0;
271 }
272
set_ac2_ep_map(struct ath6kl * ar,u8 ac,enum htc_endpoint_id ep)273 static inline void set_ac2_ep_map(struct ath6kl *ar,
274 u8 ac,
275 enum htc_endpoint_id ep)
276 {
277 ar->ac2ep_map[ac] = ep;
278 ar->ep2ac_map[ep] = ac;
279 }
280
281 /* connect to a service */
ath6kl_connectservice(struct ath6kl * ar,struct htc_service_connect_req * con_req,char * desc)282 static int ath6kl_connectservice(struct ath6kl *ar,
283 struct htc_service_connect_req *con_req,
284 char *desc)
285 {
286 int status;
287 struct htc_service_connect_resp response;
288
289 memset(&response, 0, sizeof(response));
290
291 status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response);
292 if (status) {
293 ath6kl_err("failed to connect to %s service status:%d\n",
294 desc, status);
295 return status;
296 }
297
298 switch (con_req->svc_id) {
299 case WMI_CONTROL_SVC:
300 if (test_bit(WMI_ENABLED, &ar->flag))
301 ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint);
302 ar->ctrl_ep = response.endpoint;
303 break;
304 case WMI_DATA_BE_SVC:
305 set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint);
306 break;
307 case WMI_DATA_BK_SVC:
308 set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint);
309 break;
310 case WMI_DATA_VI_SVC:
311 set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint);
312 break;
313 case WMI_DATA_VO_SVC:
314 set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint);
315 break;
316 default:
317 ath6kl_err("service id is not mapped %d\n", con_req->svc_id);
318 return -EINVAL;
319 }
320
321 return 0;
322 }
323
ath6kl_init_service_ep(struct ath6kl * ar)324 static int ath6kl_init_service_ep(struct ath6kl *ar)
325 {
326 struct htc_service_connect_req connect;
327
328 memset(&connect, 0, sizeof(connect));
329
330 /* these fields are the same for all service endpoints */
331 connect.ep_cb.tx_comp_multi = ath6kl_tx_complete;
332 connect.ep_cb.rx = ath6kl_rx;
333 connect.ep_cb.rx_refill = ath6kl_rx_refill;
334 connect.ep_cb.tx_full = ath6kl_tx_queue_full;
335
336 /*
337 * Set the max queue depth so that our ath6kl_tx_queue_full handler
338 * gets called.
339 */
340 connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH;
341 connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4;
342 if (!connect.ep_cb.rx_refill_thresh)
343 connect.ep_cb.rx_refill_thresh++;
344
345 /* connect to control service */
346 connect.svc_id = WMI_CONTROL_SVC;
347 if (ath6kl_connectservice(ar, &connect, "WMI CONTROL"))
348 return -EIO;
349
350 connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN;
351
352 /*
353 * Limit the HTC message size on the send path, although e can
354 * receive A-MSDU frames of 4K, we will only send ethernet-sized
355 * (802.3) frames on the send path.
356 */
357 connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH;
358
359 /*
360 * To reduce the amount of committed memory for larger A_MSDU
361 * frames, use the recv-alloc threshold mechanism for larger
362 * packets.
363 */
364 connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE;
365 connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf;
366
367 /*
368 * For the remaining data services set the connection flag to
369 * reduce dribbling, if configured to do so.
370 */
371 connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB;
372 connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK;
373 connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF;
374
375 connect.svc_id = WMI_DATA_BE_SVC;
376
377 if (ath6kl_connectservice(ar, &connect, "WMI DATA BE"))
378 return -EIO;
379
380 /* connect to back-ground map this to WMI LOW_PRI */
381 connect.svc_id = WMI_DATA_BK_SVC;
382 if (ath6kl_connectservice(ar, &connect, "WMI DATA BK"))
383 return -EIO;
384
385 /* connect to Video service, map this to HI PRI */
386 connect.svc_id = WMI_DATA_VI_SVC;
387 if (ath6kl_connectservice(ar, &connect, "WMI DATA VI"))
388 return -EIO;
389
390 /*
391 * Connect to VO service, this is currently not mapped to a WMI
392 * priority stream due to historical reasons. WMI originally
393 * defined 3 priorities over 3 mailboxes We can change this when
394 * WMI is reworked so that priorities are not dependent on
395 * mailboxes.
396 */
397 connect.svc_id = WMI_DATA_VO_SVC;
398 if (ath6kl_connectservice(ar, &connect, "WMI DATA VO"))
399 return -EIO;
400
401 return 0;
402 }
403
ath6kl_init_control_info(struct ath6kl_vif * vif)404 void ath6kl_init_control_info(struct ath6kl_vif *vif)
405 {
406 ath6kl_init_profile_info(vif);
407 vif->def_txkey_index = 0;
408 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
409 vif->ch_hint = 0;
410 }
411
412 /*
413 * Set HTC/Mbox operational parameters, this can only be called when the
414 * target is in the BMI phase.
415 */
ath6kl_set_htc_params(struct ath6kl * ar,u32 mbox_isr_yield_val,u8 htc_ctrl_buf)416 static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val,
417 u8 htc_ctrl_buf)
418 {
419 int status;
420 u32 blk_size;
421
422 blk_size = ar->mbox_info.block_size;
423
424 if (htc_ctrl_buf)
425 blk_size |= ((u32)htc_ctrl_buf) << 16;
426
427 /* set the host interest area for the block size */
428 status = ath6kl_bmi_write_hi32(ar, hi_mbox_io_block_sz, blk_size);
429 if (status) {
430 ath6kl_err("bmi_write_memory for IO block size failed\n");
431 goto out;
432 }
433
434 ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n",
435 blk_size,
436 ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)));
437
438 if (mbox_isr_yield_val) {
439 /* set the host interest area for the mbox ISR yield limit */
440 status = ath6kl_bmi_write_hi32(ar, hi_mbox_isr_yield_limit,
441 mbox_isr_yield_val);
442 if (status) {
443 ath6kl_err("bmi_write_memory for yield limit failed\n");
444 goto out;
445 }
446 }
447
448 out:
449 return status;
450 }
451
ath6kl_target_config_wlan_params(struct ath6kl * ar,int idx)452 static int ath6kl_target_config_wlan_params(struct ath6kl *ar, int idx)
453 {
454 int ret;
455
456 /*
457 * Configure the device for rx dot11 header rules. "0,0" are the
458 * default values. Required if checksum offload is needed. Set
459 * RxMetaVersion to 2.
460 */
461 ret = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, idx,
462 ar->rx_meta_ver, 0, 0);
463 if (ret) {
464 ath6kl_err("unable to set the rx frame format: %d\n", ret);
465 return ret;
466 }
467
468 if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) {
469 ret = ath6kl_wmi_pmparams_cmd(ar->wmi, idx, 0, 1, 0, 0, 1,
470 IGNORE_PS_FAIL_DURING_SCAN);
471 if (ret) {
472 ath6kl_err("unable to set power save fail event policy: %d\n",
473 ret);
474 return ret;
475 }
476 }
477
478 if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) {
479 ret = ath6kl_wmi_set_lpreamble_cmd(ar->wmi, idx, 0,
480 WMI_FOLLOW_BARKER_IN_ERP);
481 if (ret) {
482 ath6kl_err("unable to set barker preamble policy: %d\n",
483 ret);
484 return ret;
485 }
486 }
487
488 ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, idx,
489 WLAN_CONFIG_KEEP_ALIVE_INTERVAL);
490 if (ret) {
491 ath6kl_err("unable to set keep alive interval: %d\n", ret);
492 return ret;
493 }
494
495 ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, idx,
496 WLAN_CONFIG_DISCONNECT_TIMEOUT);
497 if (ret) {
498 ath6kl_err("unable to set disconnect timeout: %d\n", ret);
499 return ret;
500 }
501
502 if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) {
503 ret = ath6kl_wmi_set_wmm_txop(ar->wmi, idx, WMI_TXOP_DISABLED);
504 if (ret) {
505 ath6kl_err("unable to set txop bursting: %d\n", ret);
506 return ret;
507 }
508 }
509
510 if (ar->p2p && (ar->vif_max == 1 || idx)) {
511 ret = ath6kl_wmi_info_req_cmd(ar->wmi, idx,
512 P2P_FLAG_CAPABILITIES_REQ |
513 P2P_FLAG_MACADDR_REQ |
514 P2P_FLAG_HMODEL_REQ);
515 if (ret) {
516 ath6kl_dbg(ATH6KL_DBG_TRC,
517 "failed to request P2P capabilities (%d) - assuming P2P not supported\n",
518 ret);
519 ar->p2p = false;
520 }
521 }
522
523 if (ar->p2p && (ar->vif_max == 1 || idx)) {
524 /* Enable Probe Request reporting for P2P */
525 ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, idx, true);
526 if (ret) {
527 ath6kl_dbg(ATH6KL_DBG_TRC,
528 "failed to enable Probe Request reporting (%d)\n",
529 ret);
530 }
531 }
532
533 return ret;
534 }
535
ath6kl_configure_target(struct ath6kl * ar)536 int ath6kl_configure_target(struct ath6kl *ar)
537 {
538 u32 param, ram_reserved_size;
539 u8 fw_iftype, fw_mode = 0, fw_submode = 0;
540 int i, status;
541
542 param = !!(ar->conf_flags & ATH6KL_CONF_UART_DEBUG);
543 if (ath6kl_bmi_write_hi32(ar, hi_serial_enable, param)) {
544 ath6kl_err("bmi_write_memory for uart debug failed\n");
545 return -EIO;
546 }
547
548 /*
549 * Note: Even though the firmware interface type is
550 * chosen as BSS_STA for all three interfaces, can
551 * be configured to IBSS/AP as long as the fw submode
552 * remains normal mode (0 - AP, STA and IBSS). But
553 * due to an target assert in firmware only one interface is
554 * configured for now.
555 */
556 fw_iftype = HI_OPTION_FW_MODE_BSS_STA;
557
558 for (i = 0; i < ar->vif_max; i++)
559 fw_mode |= fw_iftype << (i * HI_OPTION_FW_MODE_BITS);
560
561 /*
562 * Submodes when fw does not support dynamic interface
563 * switching:
564 * vif[0] - AP/STA/IBSS
565 * vif[1] - "P2P dev"/"P2P GO"/"P2P Client"
566 * vif[2] - "P2P dev"/"P2P GO"/"P2P Client"
567 * Otherwise, All the interface are initialized to p2p dev.
568 */
569
570 if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
571 ar->fw_capabilities)) {
572 for (i = 0; i < ar->vif_max; i++)
573 fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
574 (i * HI_OPTION_FW_SUBMODE_BITS);
575 } else {
576 for (i = 0; i < ar->max_norm_iface; i++)
577 fw_submode |= HI_OPTION_FW_SUBMODE_NONE <<
578 (i * HI_OPTION_FW_SUBMODE_BITS);
579
580 for (i = ar->max_norm_iface; i < ar->vif_max; i++)
581 fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
582 (i * HI_OPTION_FW_SUBMODE_BITS);
583
584 if (ar->p2p && ar->vif_max == 1)
585 fw_submode = HI_OPTION_FW_SUBMODE_P2PDEV;
586 }
587
588 if (ath6kl_bmi_write_hi32(ar, hi_app_host_interest,
589 HTC_PROTOCOL_VERSION) != 0) {
590 ath6kl_err("bmi_write_memory for htc version failed\n");
591 return -EIO;
592 }
593
594 /* set the firmware mode to STA/IBSS/AP */
595 param = 0;
596
597 if (ath6kl_bmi_read_hi32(ar, hi_option_flag, ¶m) != 0) {
598 ath6kl_err("bmi_read_memory for setting fwmode failed\n");
599 return -EIO;
600 }
601
602 param |= (ar->vif_max << HI_OPTION_NUM_DEV_SHIFT);
603 param |= fw_mode << HI_OPTION_FW_MODE_SHIFT;
604 param |= fw_submode << HI_OPTION_FW_SUBMODE_SHIFT;
605
606 param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
607 param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
608
609 if (ath6kl_bmi_write_hi32(ar, hi_option_flag, param) != 0) {
610 ath6kl_err("bmi_write_memory for setting fwmode failed\n");
611 return -EIO;
612 }
613
614 ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n");
615
616 /*
617 * Hardcode the address use for the extended board data
618 * Ideally this should be pre-allocate by the OS at boot time
619 * But since it is a new feature and board data is loaded
620 * at init time, we have to workaround this from host.
621 * It is difficult to patch the firmware boot code,
622 * but possible in theory.
623 */
624
625 if ((ar->target_type == TARGET_TYPE_AR6003) ||
626 (ar->version.target_ver == AR6004_HW_1_3_VERSION) ||
627 (ar->version.target_ver == AR6004_HW_3_0_VERSION)) {
628 param = ar->hw.board_ext_data_addr;
629 ram_reserved_size = ar->hw.reserved_ram_size;
630
631 if (ath6kl_bmi_write_hi32(ar, hi_board_ext_data, param) != 0) {
632 ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n");
633 return -EIO;
634 }
635
636 if (ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz,
637 ram_reserved_size) != 0) {
638 ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n");
639 return -EIO;
640 }
641 }
642
643 /* set the block size for the target */
644 if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0))
645 /* use default number of control buffers */
646 return -EIO;
647
648 /* Configure GPIO AR600x UART */
649 status = ath6kl_bmi_write_hi32(ar, hi_dbg_uart_txpin,
650 ar->hw.uarttx_pin);
651 if (status)
652 return status;
653
654 /* Only set the baud rate if we're actually doing debug */
655 if (ar->conf_flags & ATH6KL_CONF_UART_DEBUG) {
656 status = ath6kl_bmi_write_hi32(ar, hi_desired_baud_rate,
657 ar->hw.uarttx_rate);
658 if (status)
659 return status;
660 }
661
662 /* Configure target refclk_hz */
663 if (ar->hw.refclk_hz != 0) {
664 status = ath6kl_bmi_write_hi32(ar, hi_refclk_hz,
665 ar->hw.refclk_hz);
666 if (status)
667 return status;
668 }
669
670 return 0;
671 }
672
673 /* firmware upload */
ath6kl_get_fw(struct ath6kl * ar,const char * filename,u8 ** fw,size_t * fw_len)674 static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
675 u8 **fw, size_t *fw_len)
676 {
677 const struct firmware *fw_entry;
678 int ret;
679
680 ret = request_firmware(&fw_entry, filename, ar->dev);
681 if (ret)
682 return ret;
683
684 *fw_len = fw_entry->size;
685 *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
686
687 if (*fw == NULL)
688 ret = -ENOMEM;
689
690 release_firmware(fw_entry);
691
692 return ret;
693 }
694
695 #ifdef CONFIG_OF
696 /*
697 * Check the device tree for a board-id and use it to construct
698 * the pathname to the firmware file. Used (for now) to find a
699 * fallback to the "bdata.bin" file--typically a symlink to the
700 * appropriate board-specific file.
701 */
check_device_tree(struct ath6kl * ar)702 static bool check_device_tree(struct ath6kl *ar)
703 {
704 static const char *board_id_prop = "atheros,board-id";
705 struct device_node *node;
706 char board_filename[64];
707 const char *board_id;
708 int ret;
709
710 for_each_compatible_node(node, NULL, "atheros,ath6kl") {
711 board_id = of_get_property(node, board_id_prop, NULL);
712 if (board_id == NULL) {
713 ath6kl_warn("No \"%s\" property on %pOFn node.\n",
714 board_id_prop, node);
715 continue;
716 }
717 snprintf(board_filename, sizeof(board_filename),
718 "%s/bdata.%s.bin", ar->hw.fw.dir, board_id);
719
720 ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board,
721 &ar->fw_board_len);
722 if (ret) {
723 ath6kl_err("Failed to get DT board file %s: %d\n",
724 board_filename, ret);
725 continue;
726 }
727 of_node_put(node);
728 return true;
729 }
730 return false;
731 }
732 #else
check_device_tree(struct ath6kl * ar)733 static bool check_device_tree(struct ath6kl *ar)
734 {
735 return false;
736 }
737 #endif /* CONFIG_OF */
738
ath6kl_fetch_board_file(struct ath6kl * ar)739 static int ath6kl_fetch_board_file(struct ath6kl *ar)
740 {
741 const char *filename;
742 int ret;
743
744 if (ar->fw_board != NULL)
745 return 0;
746
747 if (WARN_ON(ar->hw.fw_board == NULL))
748 return -EINVAL;
749
750 filename = ar->hw.fw_board;
751
752 ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
753 &ar->fw_board_len);
754 if (ret == 0) {
755 /* managed to get proper board file */
756 return 0;
757 }
758
759 if (check_device_tree(ar)) {
760 /* got board file from device tree */
761 return 0;
762 }
763
764 /* there was no proper board file, try to use default instead */
765 ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
766 filename, ret);
767
768 filename = ar->hw.fw_default_board;
769
770 ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
771 &ar->fw_board_len);
772 if (ret) {
773 ath6kl_err("Failed to get default board file %s: %d\n",
774 filename, ret);
775 return ret;
776 }
777
778 ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
779 ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
780
781 return 0;
782 }
783
ath6kl_fetch_otp_file(struct ath6kl * ar)784 static int ath6kl_fetch_otp_file(struct ath6kl *ar)
785 {
786 char filename[100];
787 int ret;
788
789 if (ar->fw_otp != NULL)
790 return 0;
791
792 if (ar->hw.fw.otp == NULL) {
793 ath6kl_dbg(ATH6KL_DBG_BOOT,
794 "no OTP file configured for this hw\n");
795 return 0;
796 }
797
798 snprintf(filename, sizeof(filename), "%s/%s",
799 ar->hw.fw.dir, ar->hw.fw.otp);
800
801 ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
802 &ar->fw_otp_len);
803 if (ret) {
804 ath6kl_err("Failed to get OTP file %s: %d\n",
805 filename, ret);
806 return ret;
807 }
808
809 return 0;
810 }
811
ath6kl_fetch_testmode_file(struct ath6kl * ar)812 static int ath6kl_fetch_testmode_file(struct ath6kl *ar)
813 {
814 char filename[100];
815 int ret;
816
817 if (ar->testmode == 0)
818 return 0;
819
820 ath6kl_dbg(ATH6KL_DBG_BOOT, "testmode %d\n", ar->testmode);
821
822 if (ar->testmode == 2) {
823 if (ar->hw.fw.utf == NULL) {
824 ath6kl_warn("testmode 2 not supported\n");
825 return -EOPNOTSUPP;
826 }
827
828 snprintf(filename, sizeof(filename), "%s/%s",
829 ar->hw.fw.dir, ar->hw.fw.utf);
830 } else {
831 if (ar->hw.fw.tcmd == NULL) {
832 ath6kl_warn("testmode 1 not supported\n");
833 return -EOPNOTSUPP;
834 }
835
836 snprintf(filename, sizeof(filename), "%s/%s",
837 ar->hw.fw.dir, ar->hw.fw.tcmd);
838 }
839
840 set_bit(TESTMODE, &ar->flag);
841
842 ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
843 if (ret) {
844 ath6kl_err("Failed to get testmode %d firmware file %s: %d\n",
845 ar->testmode, filename, ret);
846 return ret;
847 }
848
849 return 0;
850 }
851
ath6kl_fetch_fw_file(struct ath6kl * ar)852 static int ath6kl_fetch_fw_file(struct ath6kl *ar)
853 {
854 char filename[100];
855 int ret;
856
857 if (ar->fw != NULL)
858 return 0;
859
860 /* FIXME: remove WARN_ON() as we won't support FW API 1 for long */
861 if (WARN_ON(ar->hw.fw.fw == NULL))
862 return -EINVAL;
863
864 snprintf(filename, sizeof(filename), "%s/%s",
865 ar->hw.fw.dir, ar->hw.fw.fw);
866
867 ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
868 if (ret) {
869 ath6kl_err("Failed to get firmware file %s: %d\n",
870 filename, ret);
871 return ret;
872 }
873
874 return 0;
875 }
876
ath6kl_fetch_patch_file(struct ath6kl * ar)877 static int ath6kl_fetch_patch_file(struct ath6kl *ar)
878 {
879 char filename[100];
880 int ret;
881
882 if (ar->fw_patch != NULL)
883 return 0;
884
885 if (ar->hw.fw.patch == NULL)
886 return 0;
887
888 snprintf(filename, sizeof(filename), "%s/%s",
889 ar->hw.fw.dir, ar->hw.fw.patch);
890
891 ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
892 &ar->fw_patch_len);
893 if (ret) {
894 ath6kl_err("Failed to get patch file %s: %d\n",
895 filename, ret);
896 return ret;
897 }
898
899 return 0;
900 }
901
ath6kl_fetch_testscript_file(struct ath6kl * ar)902 static int ath6kl_fetch_testscript_file(struct ath6kl *ar)
903 {
904 char filename[100];
905 int ret;
906
907 if (ar->testmode != 2)
908 return 0;
909
910 if (ar->fw_testscript != NULL)
911 return 0;
912
913 if (ar->hw.fw.testscript == NULL)
914 return 0;
915
916 snprintf(filename, sizeof(filename), "%s/%s",
917 ar->hw.fw.dir, ar->hw.fw.testscript);
918
919 ret = ath6kl_get_fw(ar, filename, &ar->fw_testscript,
920 &ar->fw_testscript_len);
921 if (ret) {
922 ath6kl_err("Failed to get testscript file %s: %d\n",
923 filename, ret);
924 return ret;
925 }
926
927 return 0;
928 }
929
ath6kl_fetch_fw_api1(struct ath6kl * ar)930 static int ath6kl_fetch_fw_api1(struct ath6kl *ar)
931 {
932 int ret;
933
934 ret = ath6kl_fetch_otp_file(ar);
935 if (ret)
936 return ret;
937
938 ret = ath6kl_fetch_fw_file(ar);
939 if (ret)
940 return ret;
941
942 ret = ath6kl_fetch_patch_file(ar);
943 if (ret)
944 return ret;
945
946 ret = ath6kl_fetch_testscript_file(ar);
947 if (ret)
948 return ret;
949
950 return 0;
951 }
952
ath6kl_fetch_fw_apin(struct ath6kl * ar,const char * name)953 static int ath6kl_fetch_fw_apin(struct ath6kl *ar, const char *name)
954 {
955 size_t magic_len, len, ie_len;
956 const struct firmware *fw;
957 struct ath6kl_fw_ie *hdr;
958 char filename[100];
959 const u8 *data;
960 int ret, ie_id, i, index, bit;
961 __le32 *val;
962
963 snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, name);
964
965 ret = request_firmware(&fw, filename, ar->dev);
966 if (ret) {
967 ath6kl_err("Failed request firmware, rv: %d\n", ret);
968 return ret;
969 }
970
971 data = fw->data;
972 len = fw->size;
973
974 /* magic also includes the null byte, check that as well */
975 magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1;
976
977 if (len < magic_len) {
978 ath6kl_err("Magic length is invalid, len: %zd magic_len: %zd\n",
979 len, magic_len);
980 ret = -EINVAL;
981 goto out;
982 }
983
984 if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) {
985 ath6kl_err("Magic is invalid, magic_len: %zd\n",
986 magic_len);
987 ret = -EINVAL;
988 goto out;
989 }
990
991 len -= magic_len;
992 data += magic_len;
993
994 /* loop elements */
995 while (len > sizeof(struct ath6kl_fw_ie)) {
996 /* hdr is unaligned! */
997 hdr = (struct ath6kl_fw_ie *) data;
998
999 ie_id = le32_to_cpup(&hdr->id);
1000 ie_len = le32_to_cpup(&hdr->len);
1001
1002 len -= sizeof(*hdr);
1003 data += sizeof(*hdr);
1004
1005 ath6kl_dbg(ATH6KL_DBG_BOOT, "ie-id: %d len: %zd (0x%zx)\n",
1006 ie_id, ie_len, ie_len);
1007
1008 if (len < ie_len) {
1009 ath6kl_err("IE len is invalid, len: %zd ie_len: %zd ie-id: %d\n",
1010 len, ie_len, ie_id);
1011 ret = -EINVAL;
1012 goto out;
1013 }
1014
1015 switch (ie_id) {
1016 case ATH6KL_FW_IE_FW_VERSION:
1017 strscpy(ar->wiphy->fw_version, data,
1018 min(sizeof(ar->wiphy->fw_version), ie_len+1));
1019
1020 ath6kl_dbg(ATH6KL_DBG_BOOT,
1021 "found fw version %s\n",
1022 ar->wiphy->fw_version);
1023 break;
1024 case ATH6KL_FW_IE_OTP_IMAGE:
1025 ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n",
1026 ie_len);
1027
1028 ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL);
1029
1030 if (ar->fw_otp == NULL) {
1031 ath6kl_err("fw_otp cannot be allocated\n");
1032 ret = -ENOMEM;
1033 goto out;
1034 }
1035
1036 ar->fw_otp_len = ie_len;
1037 break;
1038 case ATH6KL_FW_IE_FW_IMAGE:
1039 ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n",
1040 ie_len);
1041
1042 /* in testmode we already might have a fw file */
1043 if (ar->fw != NULL)
1044 break;
1045
1046 ar->fw = vmalloc(ie_len);
1047
1048 if (ar->fw == NULL) {
1049 ath6kl_err("fw storage cannot be allocated, len: %zd\n", ie_len);
1050 ret = -ENOMEM;
1051 goto out;
1052 }
1053
1054 memcpy(ar->fw, data, ie_len);
1055 ar->fw_len = ie_len;
1056 break;
1057 case ATH6KL_FW_IE_PATCH_IMAGE:
1058 ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n",
1059 ie_len);
1060
1061 ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL);
1062
1063 if (ar->fw_patch == NULL) {
1064 ath6kl_err("fw_patch storage cannot be allocated, len: %zd\n", ie_len);
1065 ret = -ENOMEM;
1066 goto out;
1067 }
1068
1069 ar->fw_patch_len = ie_len;
1070 break;
1071 case ATH6KL_FW_IE_RESERVED_RAM_SIZE:
1072 val = (__le32 *) data;
1073 ar->hw.reserved_ram_size = le32_to_cpup(val);
1074
1075 ath6kl_dbg(ATH6KL_DBG_BOOT,
1076 "found reserved ram size ie %d\n",
1077 ar->hw.reserved_ram_size);
1078 break;
1079 case ATH6KL_FW_IE_CAPABILITIES:
1080 ath6kl_dbg(ATH6KL_DBG_BOOT,
1081 "found firmware capabilities ie (%zd B)\n",
1082 ie_len);
1083
1084 for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1085 index = i / 8;
1086 bit = i % 8;
1087
1088 if (index == ie_len)
1089 break;
1090
1091 if (data[index] & (1 << bit))
1092 __set_bit(i, ar->fw_capabilities);
1093 }
1094
1095 ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "",
1096 ar->fw_capabilities,
1097 sizeof(ar->fw_capabilities));
1098 break;
1099 case ATH6KL_FW_IE_PATCH_ADDR:
1100 if (ie_len != sizeof(*val))
1101 break;
1102
1103 val = (__le32 *) data;
1104 ar->hw.dataset_patch_addr = le32_to_cpup(val);
1105
1106 ath6kl_dbg(ATH6KL_DBG_BOOT,
1107 "found patch address ie 0x%x\n",
1108 ar->hw.dataset_patch_addr);
1109 break;
1110 case ATH6KL_FW_IE_BOARD_ADDR:
1111 if (ie_len != sizeof(*val))
1112 break;
1113
1114 val = (__le32 *) data;
1115 ar->hw.board_addr = le32_to_cpup(val);
1116
1117 ath6kl_dbg(ATH6KL_DBG_BOOT,
1118 "found board address ie 0x%x\n",
1119 ar->hw.board_addr);
1120 break;
1121 case ATH6KL_FW_IE_VIF_MAX:
1122 if (ie_len != sizeof(*val))
1123 break;
1124
1125 val = (__le32 *) data;
1126 ar->vif_max = min_t(unsigned int, le32_to_cpup(val),
1127 ATH6KL_VIF_MAX);
1128
1129 if (ar->vif_max > 1 && !ar->p2p)
1130 ar->max_norm_iface = 2;
1131
1132 ath6kl_dbg(ATH6KL_DBG_BOOT,
1133 "found vif max ie %d\n", ar->vif_max);
1134 break;
1135 default:
1136 ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n",
1137 le32_to_cpup(&hdr->id));
1138 break;
1139 }
1140
1141 len -= ie_len;
1142 data += ie_len;
1143 }
1144
1145 ret = 0;
1146 out:
1147 release_firmware(fw);
1148
1149 return ret;
1150 }
1151
ath6kl_init_fetch_firmwares(struct ath6kl * ar)1152 int ath6kl_init_fetch_firmwares(struct ath6kl *ar)
1153 {
1154 int ret;
1155
1156 ret = ath6kl_fetch_board_file(ar);
1157 if (ret)
1158 return ret;
1159
1160 ret = ath6kl_fetch_testmode_file(ar);
1161 if (ret)
1162 return ret;
1163
1164 ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API5_FILE);
1165 if (ret == 0) {
1166 ar->fw_api = 5;
1167 goto out;
1168 }
1169
1170 ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API4_FILE);
1171 if (ret == 0) {
1172 ar->fw_api = 4;
1173 goto out;
1174 }
1175
1176 ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API3_FILE);
1177 if (ret == 0) {
1178 ar->fw_api = 3;
1179 goto out;
1180 }
1181
1182 ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API2_FILE);
1183 if (ret == 0) {
1184 ar->fw_api = 2;
1185 goto out;
1186 }
1187
1188 ret = ath6kl_fetch_fw_api1(ar);
1189 if (ret)
1190 return ret;
1191
1192 ar->fw_api = 1;
1193
1194 out:
1195 ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api %d\n", ar->fw_api);
1196
1197 return 0;
1198 }
1199
ath6kl_upload_board_file(struct ath6kl * ar)1200 static int ath6kl_upload_board_file(struct ath6kl *ar)
1201 {
1202 u32 board_address, board_ext_address, param;
1203 u32 board_data_size, board_ext_data_size;
1204 int ret;
1205
1206 if (WARN_ON(ar->fw_board == NULL))
1207 return -ENOENT;
1208
1209 /*
1210 * Determine where in Target RAM to write Board Data.
1211 * For AR6004, host determine Target RAM address for
1212 * writing board data.
1213 */
1214 if (ar->hw.board_addr != 0) {
1215 board_address = ar->hw.board_addr;
1216 ath6kl_bmi_write_hi32(ar, hi_board_data,
1217 board_address);
1218 } else {
1219 ret = ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address);
1220 if (ret) {
1221 ath6kl_err("Failed to get board file target address.\n");
1222 return ret;
1223 }
1224 }
1225
1226 /* determine where in target ram to write extended board data */
1227 ret = ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address);
1228 if (ret) {
1229 ath6kl_err("Failed to get extended board file target address.\n");
1230 return ret;
1231 }
1232
1233 if (ar->target_type == TARGET_TYPE_AR6003 &&
1234 board_ext_address == 0) {
1235 ath6kl_err("Failed to get board file target address.\n");
1236 return -EINVAL;
1237 }
1238
1239 switch (ar->target_type) {
1240 case TARGET_TYPE_AR6003:
1241 board_data_size = AR6003_BOARD_DATA_SZ;
1242 board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ;
1243 if (ar->fw_board_len > (board_data_size + board_ext_data_size))
1244 board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ_V2;
1245 break;
1246 case TARGET_TYPE_AR6004:
1247 board_data_size = AR6004_BOARD_DATA_SZ;
1248 board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ;
1249 break;
1250 default:
1251 WARN_ON(1);
1252 return -EINVAL;
1253 }
1254
1255 if (board_ext_address &&
1256 ar->fw_board_len == (board_data_size + board_ext_data_size)) {
1257 /* write extended board data */
1258 ath6kl_dbg(ATH6KL_DBG_BOOT,
1259 "writing extended board data to 0x%x (%d B)\n",
1260 board_ext_address, board_ext_data_size);
1261
1262 ret = ath6kl_bmi_write(ar, board_ext_address,
1263 ar->fw_board + board_data_size,
1264 board_ext_data_size);
1265 if (ret) {
1266 ath6kl_err("Failed to write extended board data: %d\n",
1267 ret);
1268 return ret;
1269 }
1270
1271 /* record that extended board data is initialized */
1272 param = (board_ext_data_size << 16) | 1;
1273
1274 ath6kl_bmi_write_hi32(ar, hi_board_ext_data_config, param);
1275 }
1276
1277 if (ar->fw_board_len < board_data_size) {
1278 ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
1279 ret = -EINVAL;
1280 return ret;
1281 }
1282
1283 ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n",
1284 board_address, board_data_size);
1285
1286 ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
1287 board_data_size);
1288
1289 if (ret) {
1290 ath6kl_err("Board file bmi write failed: %d\n", ret);
1291 return ret;
1292 }
1293
1294 /* record the fact that Board Data IS initialized */
1295 if ((ar->version.target_ver == AR6004_HW_1_3_VERSION) ||
1296 (ar->version.target_ver == AR6004_HW_3_0_VERSION))
1297 param = board_data_size;
1298 else
1299 param = 1;
1300
1301 ath6kl_bmi_write_hi32(ar, hi_board_data_initialized, param);
1302
1303 return ret;
1304 }
1305
ath6kl_upload_otp(struct ath6kl * ar)1306 static int ath6kl_upload_otp(struct ath6kl *ar)
1307 {
1308 u32 address, param;
1309 bool from_hw = false;
1310 int ret;
1311
1312 if (ar->fw_otp == NULL)
1313 return 0;
1314
1315 address = ar->hw.app_load_addr;
1316
1317 ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address,
1318 ar->fw_otp_len);
1319
1320 ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
1321 ar->fw_otp_len);
1322 if (ret) {
1323 ath6kl_err("Failed to upload OTP file: %d\n", ret);
1324 return ret;
1325 }
1326
1327 /* read firmware start address */
1328 ret = ath6kl_bmi_read_hi32(ar, hi_app_start, &address);
1329
1330 if (ret) {
1331 ath6kl_err("Failed to read hi_app_start: %d\n", ret);
1332 return ret;
1333 }
1334
1335 if (ar->hw.app_start_override_addr == 0) {
1336 ar->hw.app_start_override_addr = address;
1337 from_hw = true;
1338 }
1339
1340 ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n",
1341 from_hw ? " (from hw)" : "",
1342 ar->hw.app_start_override_addr);
1343
1344 /* execute the OTP code */
1345 ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n",
1346 ar->hw.app_start_override_addr);
1347 param = 0;
1348 ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, ¶m);
1349
1350 return ret;
1351 }
1352
ath6kl_upload_firmware(struct ath6kl * ar)1353 static int ath6kl_upload_firmware(struct ath6kl *ar)
1354 {
1355 u32 address;
1356 int ret;
1357
1358 if (WARN_ON(ar->fw == NULL))
1359 return 0;
1360
1361 address = ar->hw.app_load_addr;
1362
1363 ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n",
1364 address, ar->fw_len);
1365
1366 ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
1367
1368 if (ret) {
1369 ath6kl_err("Failed to write firmware: %d\n", ret);
1370 return ret;
1371 }
1372
1373 /*
1374 * Set starting address for firmware
1375 * Don't need to setup app_start override addr on AR6004
1376 */
1377 if (ar->target_type != TARGET_TYPE_AR6004) {
1378 address = ar->hw.app_start_override_addr;
1379 ath6kl_bmi_set_app_start(ar, address);
1380 }
1381 return ret;
1382 }
1383
ath6kl_upload_patch(struct ath6kl * ar)1384 static int ath6kl_upload_patch(struct ath6kl *ar)
1385 {
1386 u32 address;
1387 int ret;
1388
1389 if (ar->fw_patch == NULL)
1390 return 0;
1391
1392 address = ar->hw.dataset_patch_addr;
1393
1394 ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n",
1395 address, ar->fw_patch_len);
1396
1397 ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
1398 if (ret) {
1399 ath6kl_err("Failed to write patch file: %d\n", ret);
1400 return ret;
1401 }
1402
1403 ath6kl_bmi_write_hi32(ar, hi_dset_list_head, address);
1404
1405 return 0;
1406 }
1407
ath6kl_upload_testscript(struct ath6kl * ar)1408 static int ath6kl_upload_testscript(struct ath6kl *ar)
1409 {
1410 u32 address;
1411 int ret;
1412
1413 if (ar->testmode != 2)
1414 return 0;
1415
1416 if (ar->fw_testscript == NULL)
1417 return 0;
1418
1419 address = ar->hw.testscript_addr;
1420
1421 ath6kl_dbg(ATH6KL_DBG_BOOT, "writing testscript to 0x%x (%zd B)\n",
1422 address, ar->fw_testscript_len);
1423
1424 ret = ath6kl_bmi_write(ar, address, ar->fw_testscript,
1425 ar->fw_testscript_len);
1426 if (ret) {
1427 ath6kl_err("Failed to write testscript file: %d\n", ret);
1428 return ret;
1429 }
1430
1431 ath6kl_bmi_write_hi32(ar, hi_ota_testscript, address);
1432
1433 if ((ar->version.target_ver != AR6004_HW_1_3_VERSION) &&
1434 (ar->version.target_ver != AR6004_HW_3_0_VERSION))
1435 ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz, 4096);
1436
1437 ath6kl_bmi_write_hi32(ar, hi_test_apps_related, 1);
1438
1439 return 0;
1440 }
1441
ath6kl_init_upload(struct ath6kl * ar)1442 static int ath6kl_init_upload(struct ath6kl *ar)
1443 {
1444 u32 param, options, sleep, address;
1445 int status = 0;
1446
1447 if (ar->target_type != TARGET_TYPE_AR6003 &&
1448 ar->target_type != TARGET_TYPE_AR6004)
1449 return -EINVAL;
1450
1451 /* temporarily disable system sleep */
1452 address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1453 status = ath6kl_bmi_reg_read(ar, address, ¶m);
1454 if (status)
1455 return status;
1456
1457 options = param;
1458
1459 param |= ATH6KL_OPTION_SLEEP_DISABLE;
1460 status = ath6kl_bmi_reg_write(ar, address, param);
1461 if (status)
1462 return status;
1463
1464 address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1465 status = ath6kl_bmi_reg_read(ar, address, ¶m);
1466 if (status)
1467 return status;
1468
1469 sleep = param;
1470
1471 param |= SM(SYSTEM_SLEEP_DISABLE, 1);
1472 status = ath6kl_bmi_reg_write(ar, address, param);
1473 if (status)
1474 return status;
1475
1476 ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
1477 options, sleep);
1478
1479 /* program analog PLL register */
1480 /* no need to control 40/44MHz clock on AR6004 */
1481 if (ar->target_type != TARGET_TYPE_AR6004) {
1482 status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
1483 0xF9104001);
1484
1485 if (status)
1486 return status;
1487
1488 /* Run at 80/88MHz by default */
1489 param = SM(CPU_CLOCK_STANDARD, 1);
1490
1491 address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
1492 status = ath6kl_bmi_reg_write(ar, address, param);
1493 if (status)
1494 return status;
1495 }
1496
1497 param = 0;
1498 address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
1499 param = SM(LPO_CAL_ENABLE, 1);
1500 status = ath6kl_bmi_reg_write(ar, address, param);
1501 if (status)
1502 return status;
1503
1504 /* WAR to avoid SDIO CRC err */
1505 if (ar->hw.flags & ATH6KL_HW_SDIO_CRC_ERROR_WAR) {
1506 ath6kl_err("temporary war to avoid sdio crc error\n");
1507
1508 param = 0x28;
1509 address = GPIO_BASE_ADDRESS + GPIO_PIN9_ADDRESS;
1510 status = ath6kl_bmi_reg_write(ar, address, param);
1511 if (status)
1512 return status;
1513
1514 param = 0x20;
1515
1516 address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
1517 status = ath6kl_bmi_reg_write(ar, address, param);
1518 if (status)
1519 return status;
1520
1521 address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
1522 status = ath6kl_bmi_reg_write(ar, address, param);
1523 if (status)
1524 return status;
1525
1526 address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
1527 status = ath6kl_bmi_reg_write(ar, address, param);
1528 if (status)
1529 return status;
1530
1531 address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
1532 status = ath6kl_bmi_reg_write(ar, address, param);
1533 if (status)
1534 return status;
1535 }
1536
1537 /* write EEPROM data to Target RAM */
1538 status = ath6kl_upload_board_file(ar);
1539 if (status)
1540 return status;
1541
1542 /* transfer One time Programmable data */
1543 status = ath6kl_upload_otp(ar);
1544 if (status)
1545 return status;
1546
1547 /* Download Target firmware */
1548 status = ath6kl_upload_firmware(ar);
1549 if (status)
1550 return status;
1551
1552 status = ath6kl_upload_patch(ar);
1553 if (status)
1554 return status;
1555
1556 /* Download the test script */
1557 status = ath6kl_upload_testscript(ar);
1558 if (status)
1559 return status;
1560
1561 /* Restore system sleep */
1562 address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1563 status = ath6kl_bmi_reg_write(ar, address, sleep);
1564 if (status)
1565 return status;
1566
1567 address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1568 param = options | 0x20;
1569 status = ath6kl_bmi_reg_write(ar, address, param);
1570 if (status)
1571 return status;
1572
1573 return status;
1574 }
1575
ath6kl_init_hw_params(struct ath6kl * ar)1576 int ath6kl_init_hw_params(struct ath6kl *ar)
1577 {
1578 const struct ath6kl_hw *hw;
1579 int i;
1580
1581 for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
1582 hw = &hw_list[i];
1583
1584 if (hw->id == ar->version.target_ver)
1585 break;
1586 }
1587
1588 if (i == ARRAY_SIZE(hw_list)) {
1589 ath6kl_err("Unsupported hardware version: 0x%x\n",
1590 ar->version.target_ver);
1591 return -EINVAL;
1592 }
1593
1594 ar->hw = *hw;
1595
1596 ath6kl_dbg(ATH6KL_DBG_BOOT,
1597 "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n",
1598 ar->version.target_ver, ar->target_type,
1599 ar->hw.dataset_patch_addr, ar->hw.app_load_addr);
1600 ath6kl_dbg(ATH6KL_DBG_BOOT,
1601 "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x",
1602 ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr,
1603 ar->hw.reserved_ram_size);
1604 ath6kl_dbg(ATH6KL_DBG_BOOT,
1605 "refclk_hz %d uarttx_pin %d",
1606 ar->hw.refclk_hz, ar->hw.uarttx_pin);
1607
1608 return 0;
1609 }
1610
ath6kl_init_get_hif_name(enum ath6kl_hif_type type)1611 static const char *ath6kl_init_get_hif_name(enum ath6kl_hif_type type)
1612 {
1613 switch (type) {
1614 case ATH6KL_HIF_TYPE_SDIO:
1615 return "sdio";
1616 case ATH6KL_HIF_TYPE_USB:
1617 return "usb";
1618 }
1619
1620 return NULL;
1621 }
1622
1623
1624 static const struct fw_capa_str_map {
1625 int id;
1626 const char *name;
1627 } fw_capa_map[] = {
1628 { ATH6KL_FW_CAPABILITY_HOST_P2P, "host-p2p" },
1629 { ATH6KL_FW_CAPABILITY_SCHED_SCAN, "sched-scan" },
1630 { ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, "sta-p2pdev-duplex" },
1631 { ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, "inactivity-timeout" },
1632 { ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, "rsn-cap-override" },
1633 { ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, "wow-mc-filter" },
1634 { ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, "bmiss-enhance" },
1635 { ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, "sscan-match-list" },
1636 { ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, "rssi-scan-thold" },
1637 { ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, "custom-mac-addr" },
1638 { ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, "tx-err-notify" },
1639 { ATH6KL_FW_CAPABILITY_REGDOMAIN, "regdomain" },
1640 { ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, "sched-scan-v2" },
1641 { ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL, "hb-poll" },
1642 { ATH6KL_FW_CAPABILITY_64BIT_RATES, "64bit-rates" },
1643 { ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS, "ap-inactivity-mins" },
1644 { ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, "map-lp-endpoint" },
1645 { ATH6KL_FW_CAPABILITY_RATETABLE_MCS15, "ratetable-mcs15" },
1646 { ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM, "no-ip-checksum" },
1647 };
1648
ath6kl_init_get_fw_capa_name(unsigned int id)1649 static const char *ath6kl_init_get_fw_capa_name(unsigned int id)
1650 {
1651 int i;
1652
1653 for (i = 0; i < ARRAY_SIZE(fw_capa_map); i++) {
1654 if (fw_capa_map[i].id == id)
1655 return fw_capa_map[i].name;
1656 }
1657
1658 return "<unknown>";
1659 }
1660
ath6kl_init_get_fwcaps(struct ath6kl * ar,char * buf,size_t buf_len)1661 static void ath6kl_init_get_fwcaps(struct ath6kl *ar, char *buf, size_t buf_len)
1662 {
1663 u8 *data = (u8 *) ar->fw_capabilities;
1664 size_t trunc_len, len = 0;
1665 int i, index, bit;
1666 char *trunc = "...";
1667
1668 for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1669 index = i / 8;
1670 bit = i % 8;
1671
1672 if (index >= sizeof(ar->fw_capabilities) * 4)
1673 break;
1674
1675 if (buf_len - len < 4) {
1676 ath6kl_warn("firmware capability buffer too small!\n");
1677
1678 /* add "..." to the end of string */
1679 trunc_len = strlen(trunc) + 1;
1680 strncpy(buf + buf_len - trunc_len, trunc, trunc_len);
1681
1682 return;
1683 }
1684
1685 if (data[index] & (1 << bit)) {
1686 len += scnprintf(buf + len, buf_len - len, "%s,",
1687 ath6kl_init_get_fw_capa_name(i));
1688 }
1689 }
1690
1691 /* overwrite the last comma */
1692 if (len > 0)
1693 len--;
1694
1695 buf[len] = '\0';
1696 }
1697
ath6kl_init_hw_reset(struct ath6kl * ar)1698 static int ath6kl_init_hw_reset(struct ath6kl *ar)
1699 {
1700 ath6kl_dbg(ATH6KL_DBG_BOOT, "cold resetting the device");
1701
1702 return ath6kl_diag_write32(ar, RESET_CONTROL_ADDRESS,
1703 cpu_to_le32(RESET_CONTROL_COLD_RST));
1704 }
1705
__ath6kl_init_hw_start(struct ath6kl * ar)1706 static int __ath6kl_init_hw_start(struct ath6kl *ar)
1707 {
1708 long timeleft;
1709 int ret, i;
1710 char buf[200];
1711
1712 ath6kl_dbg(ATH6KL_DBG_BOOT, "hw start\n");
1713
1714 ret = ath6kl_hif_power_on(ar);
1715 if (ret)
1716 return ret;
1717
1718 ret = ath6kl_configure_target(ar);
1719 if (ret)
1720 goto err_power_off;
1721
1722 ret = ath6kl_init_upload(ar);
1723 if (ret)
1724 goto err_power_off;
1725
1726 /* Do we need to finish the BMI phase */
1727 ret = ath6kl_bmi_done(ar);
1728 if (ret)
1729 goto err_power_off;
1730
1731 /*
1732 * The reason we have to wait for the target here is that the
1733 * driver layer has to init BMI in order to set the host block
1734 * size.
1735 */
1736 ret = ath6kl_htc_wait_target(ar->htc_target);
1737
1738 if (ret == -ETIMEDOUT) {
1739 /*
1740 * Most likely USB target is in odd state after reboot and
1741 * needs a reset. A cold reset makes the whole device
1742 * disappear from USB bus and initialisation starts from
1743 * beginning.
1744 */
1745 ath6kl_warn("htc wait target timed out, resetting device\n");
1746 ath6kl_init_hw_reset(ar);
1747 goto err_power_off;
1748 } else if (ret) {
1749 ath6kl_err("htc wait target failed: %d\n", ret);
1750 goto err_power_off;
1751 }
1752
1753 ret = ath6kl_init_service_ep(ar);
1754 if (ret) {
1755 ath6kl_err("Endpoint service initialization failed: %d\n", ret);
1756 goto err_cleanup_scatter;
1757 }
1758
1759 /* setup credit distribution */
1760 ath6kl_htc_credit_setup(ar->htc_target, &ar->credit_state_info);
1761
1762 /* start HTC */
1763 ret = ath6kl_htc_start(ar->htc_target);
1764 if (ret) {
1765 /* FIXME: call this */
1766 ath6kl_cookie_cleanup(ar);
1767 goto err_cleanup_scatter;
1768 }
1769
1770 /* Wait for Wmi event to be ready */
1771 timeleft = wait_event_interruptible_timeout(ar->event_wq,
1772 test_bit(WMI_READY,
1773 &ar->flag),
1774 WMI_TIMEOUT);
1775 if (timeleft <= 0) {
1776 clear_bit(WMI_READY, &ar->flag);
1777 ath6kl_err("wmi is not ready or wait was interrupted: %ld\n",
1778 timeleft);
1779 ret = -EIO;
1780 goto err_htc_stop;
1781 }
1782
1783 ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n");
1784
1785 if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) {
1786 ath6kl_info("%s %s fw %s api %d%s\n",
1787 ar->hw.name,
1788 ath6kl_init_get_hif_name(ar->hif_type),
1789 ar->wiphy->fw_version,
1790 ar->fw_api,
1791 test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
1792 ath6kl_init_get_fwcaps(ar, buf, sizeof(buf));
1793 ath6kl_info("firmware supports: %s\n", buf);
1794 }
1795
1796 if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
1797 ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n",
1798 ATH6KL_ABI_VERSION, ar->version.abi_ver);
1799 ret = -EIO;
1800 goto err_htc_stop;
1801 }
1802
1803 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
1804
1805 /* communicate the wmi protocol verision to the target */
1806 /* FIXME: return error */
1807 if ((ath6kl_set_host_app_area(ar)) != 0)
1808 ath6kl_err("unable to set the host app area\n");
1809
1810 for (i = 0; i < ar->vif_max; i++) {
1811 ret = ath6kl_target_config_wlan_params(ar, i);
1812 if (ret)
1813 goto err_htc_stop;
1814 }
1815
1816 return 0;
1817
1818 err_htc_stop:
1819 ath6kl_htc_stop(ar->htc_target);
1820 err_cleanup_scatter:
1821 ath6kl_hif_cleanup_scatter(ar);
1822 err_power_off:
1823 ath6kl_hif_power_off(ar);
1824
1825 return ret;
1826 }
1827
ath6kl_init_hw_start(struct ath6kl * ar)1828 int ath6kl_init_hw_start(struct ath6kl *ar)
1829 {
1830 int err;
1831
1832 err = __ath6kl_init_hw_start(ar);
1833 if (err)
1834 return err;
1835 ar->state = ATH6KL_STATE_ON;
1836 return 0;
1837 }
1838
__ath6kl_init_hw_stop(struct ath6kl * ar)1839 static int __ath6kl_init_hw_stop(struct ath6kl *ar)
1840 {
1841 int ret;
1842
1843 ath6kl_dbg(ATH6KL_DBG_BOOT, "hw stop\n");
1844
1845 ath6kl_htc_stop(ar->htc_target);
1846
1847 ath6kl_hif_stop(ar);
1848
1849 ath6kl_bmi_reset(ar);
1850
1851 ret = ath6kl_hif_power_off(ar);
1852 if (ret)
1853 ath6kl_warn("failed to power off hif: %d\n", ret);
1854
1855 return 0;
1856 }
1857
ath6kl_init_hw_stop(struct ath6kl * ar)1858 int ath6kl_init_hw_stop(struct ath6kl *ar)
1859 {
1860 int err;
1861
1862 err = __ath6kl_init_hw_stop(ar);
1863 if (err)
1864 return err;
1865 ar->state = ATH6KL_STATE_OFF;
1866 return 0;
1867 }
1868
ath6kl_init_hw_restart(struct ath6kl * ar)1869 void ath6kl_init_hw_restart(struct ath6kl *ar)
1870 {
1871 clear_bit(WMI_READY, &ar->flag);
1872
1873 ath6kl_cfg80211_stop_all(ar);
1874
1875 if (__ath6kl_init_hw_stop(ar)) {
1876 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to stop during fw error recovery\n");
1877 return;
1878 }
1879
1880 if (__ath6kl_init_hw_start(ar)) {
1881 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n");
1882 return;
1883 }
1884 }
1885
ath6kl_stop_txrx(struct ath6kl * ar)1886 void ath6kl_stop_txrx(struct ath6kl *ar)
1887 {
1888 struct ath6kl_vif *vif, *tmp_vif;
1889 int i;
1890
1891 set_bit(DESTROY_IN_PROGRESS, &ar->flag);
1892
1893 if (down_interruptible(&ar->sem)) {
1894 ath6kl_err("down_interruptible failed\n");
1895 return;
1896 }
1897
1898 for (i = 0; i < AP_MAX_NUM_STA; i++)
1899 aggr_reset_state(ar->sta_list[i].aggr_conn);
1900
1901 spin_lock_bh(&ar->list_lock);
1902 list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) {
1903 list_del(&vif->list);
1904 spin_unlock_bh(&ar->list_lock);
1905 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1906 rtnl_lock();
1907 wiphy_lock(ar->wiphy);
1908 ath6kl_cfg80211_vif_cleanup(vif);
1909 wiphy_unlock(ar->wiphy);
1910 rtnl_unlock();
1911 spin_lock_bh(&ar->list_lock);
1912 }
1913 spin_unlock_bh(&ar->list_lock);
1914
1915 clear_bit(WMI_READY, &ar->flag);
1916
1917 if (ar->fw_recovery.enable)
1918 del_timer_sync(&ar->fw_recovery.hb_timer);
1919
1920 /*
1921 * After wmi_shudown all WMI events will be dropped. We
1922 * need to cleanup the buffers allocated in AP mode and
1923 * give disconnect notification to stack, which usually
1924 * happens in the disconnect_event. Simulate the disconnect
1925 * event by calling the function directly. Sometimes
1926 * disconnect_event will be received when the debug logs
1927 * are collected.
1928 */
1929 ath6kl_wmi_shutdown(ar->wmi);
1930
1931 clear_bit(WMI_ENABLED, &ar->flag);
1932 if (ar->htc_target) {
1933 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
1934 ath6kl_htc_stop(ar->htc_target);
1935 }
1936
1937 /*
1938 * Try to reset the device if we can. The driver may have been
1939 * configure NOT to reset the target during a debug session.
1940 */
1941 ath6kl_init_hw_reset(ar);
1942
1943 up(&ar->sem);
1944 }
1945 EXPORT_SYMBOL(ath6kl_stop_txrx);
1946