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
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 
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 
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 
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 */
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 
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 
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  */
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 
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 
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, &param) != 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 */
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  */
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
733 static bool check_device_tree(struct ath6kl *ar)
734 {
735 	return false;
736 }
737 #endif /* CONFIG_OF */
738 
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 
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 
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 
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 
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 
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 
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 
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 			strlcpy(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 
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 
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 
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, &param);
1349 
1350 	return ret;
1351 }
1352 
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 
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 
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 
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, &param);
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, &param);
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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