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Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-sv-open.c
CommitLineData
4613e72d
CK		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2010 - 2011 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called LICENSE.GPL.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2010 - 2011 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63#include <linux/init.h>
64#include <linux/kernel.h>
65#include <linux/module.h>
66#include <net/net_namespace.h>
67#include <linux/netdevice.h>
68#include <net/cfg80211.h>
69#include <net/mac80211.h>
70#include <net/netlink.h>
71
4613e72d
CK		 72#include "iwl-dev.h"
73#include "iwl-core.h"
74#include "iwl-debug.h"
75#include "iwl-fh.h"
76#include "iwl-io.h"
77#include "iwl-agn.h"
78#include "iwl-testmode.h"
bdfbf092 79#include "iwl-trans.h"
4613e72d
CK		 80
81/* The TLVs used in the gnl message policy between the kernel module and
82 * user space application. iwl_testmode_gnl_msg_policy is to be carried
83 * through the NL80211_CMD_TESTMODE channel regulated by nl80211.
84 * See iwl-testmode.h
85 */
86static
87struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = {
88 [IWL_TM_ATTR_COMMAND] = { .type = NLA_U32, },
89
90 [IWL_TM_ATTR_UCODE_CMD_ID] = { .type = NLA_U8, },
91 [IWL_TM_ATTR_UCODE_CMD_DATA] = { .type = NLA_UNSPEC, },
92
93 [IWL_TM_ATTR_REG_OFFSET] = { .type = NLA_U32, },
94 [IWL_TM_ATTR_REG_VALUE8] = { .type = NLA_U8, },
95 [IWL_TM_ATTR_REG_VALUE32] = { .type = NLA_U32, },
96
97 [IWL_TM_ATTR_SYNC_RSP] = { .type = NLA_UNSPEC, },
98 [IWL_TM_ATTR_UCODE_RX_PKT] = { .type = NLA_UNSPEC, },
7a4e5281 99
4babc358
WYG		 100 [IWL_TM_ATTR_EEPROM] = { .type = NLA_UNSPEC, },
101
7a4e5281 102 [IWL_TM_ATTR_TRACE_ADDR] = { .type = NLA_UNSPEC, },
eb64dca0 103 [IWL_TM_ATTR_TRACE_DUMP] = { .type = NLA_UNSPEC, },
49b72100 104 [IWL_TM_ATTR_TRACE_SIZE] = { .type = NLA_U32, },
7a4e5281 105
6489854b 106 [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, },
49b72100 107
e98a1939 108 [IWL_TM_ATTR_UCODE_OWNER] = { .type = NLA_U8, },
4613e72d
CK		 109};
110
111/*
112 * See the struct iwl_rx_packet in iwl-commands.h for the format of the
113 * received events from the device
114 */
115static inline int get_event_length(struct iwl_rx_mem_buffer *rxb)
116{
117 struct iwl_rx_packet *pkt = rxb_addr(rxb);
118 if (pkt)
119 return le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
120 else
121 return 0;
122}
123
124
125/*
126 * This function multicasts the spontaneous messages from the device to the
127 * user space. It is invoked whenever there is a received messages
128 * from the device. This function is called within the ISR of the rx handlers
129 * in iwlagn driver.
130 *
131 * The parsing of the message content is left to the user space application,
132 * The message content is treated as unattacked raw data and is encapsulated
133 * with IWL_TM_ATTR_UCODE_RX_PKT multicasting to the user space.
134 *
135 * @priv: the instance of iwlwifi device
136 * @rxb: pointer to rx data content received by the ISR
137 *
138 * See the message policies and TLVs in iwl_testmode_gnl_msg_policy[].
139 * For the messages multicasting to the user application, the mandatory
140 * TLV fields are :
141 * IWL_TM_ATTR_COMMAND must be IWL_TM_CMD_DEV2APP_UCODE_RX_PKT
142 * IWL_TM_ATTR_UCODE_RX_PKT for carrying the message content
143 */
144
145static void iwl_testmode_ucode_rx_pkt(struct iwl_priv *priv,
146 struct iwl_rx_mem_buffer *rxb)
147{
148 struct ieee80211_hw *hw = priv->hw;
149 struct sk_buff *skb;
150 void *data;
151 int length;
152
153 data = (void *)rxb_addr(rxb);
154 length = get_event_length(rxb);
155
156 if (!data || length == 0)
157 return;
158
159 skb = cfg80211_testmode_alloc_event_skb(hw->wiphy, 20 + length,
160 GFP_ATOMIC);
161 if (skb == NULL) {
162 IWL_DEBUG_INFO(priv,
163 "Run out of memory for messages to user space ?\n");
164 return;
165 }
166 NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, IWL_TM_CMD_DEV2APP_UCODE_RX_PKT);
167 NLA_PUT(skb, IWL_TM_ATTR_UCODE_RX_PKT, length, data);
168 cfg80211_testmode_event(skb, GFP_ATOMIC);
169 return;
170
171nla_put_failure:
172 kfree_skb(skb);
173 IWL_DEBUG_INFO(priv, "Ouch, overran buffer, check allocation!\n");
174}
175
176void iwl_testmode_init(struct iwl_priv *priv)
177{
178 priv->pre_rx_handler = iwl_testmode_ucode_rx_pkt;
7a4e5281
WYG		 179 priv->testmode_trace.trace_enabled = false;
180}
181
182static void iwl_trace_cleanup(struct iwl_priv *priv)
183{
3599d39a 184 struct device *dev = priv->bus.dev;
7a4e5281
WYG		 185
186 if (priv->testmode_trace.trace_enabled) {
187 if (priv->testmode_trace.cpu_addr &&
188 priv->testmode_trace.dma_addr)
189 dma_free_coherent(dev,
49b72100 190 priv->testmode_trace.total_size,
7a4e5281
WYG		 191 priv->testmode_trace.cpu_addr,
192 priv->testmode_trace.dma_addr);
193 priv->testmode_trace.trace_enabled = false;
194 priv->testmode_trace.cpu_addr = NULL;
195 priv->testmode_trace.trace_addr = NULL;
196 priv->testmode_trace.dma_addr = 0;
49b72100
WYG		 197 priv->testmode_trace.buff_size = 0;
198 priv->testmode_trace.total_size = 0;
7a4e5281
WYG		 199 }
200}
201
202
203void iwl_testmode_cleanup(struct iwl_priv *priv)
204{
205 iwl_trace_cleanup(priv);
4613e72d
CK		 206}
207
208/*
209 * This function handles the user application commands to the ucode.
210 *
211 * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_CMD_ID and
212 * IWL_TM_ATTR_UCODE_CMD_DATA and calls to the handler to send the
213 * host command to the ucode.
214 *
215 * If any mandatory field is missing, -ENOMSG is replied to the user space
216 * application; otherwise, the actual execution result of the host command to
217 * ucode is replied.
218 *
219 * @hw: ieee80211_hw object that represents the device
220 * @tb: gnl message fields from the user space
221 */
222static int iwl_testmode_ucode(struct ieee80211_hw *hw, struct nlattr **tb)
223{
224 struct iwl_priv *priv = hw->priv;
225 struct iwl_host_cmd cmd;
226
227 memset(&cmd, 0, sizeof(struct iwl_host_cmd));
228
229 if (!tb[IWL_TM_ATTR_UCODE_CMD_ID] ||
230 !tb[IWL_TM_ATTR_UCODE_CMD_DATA]) {
231 IWL_DEBUG_INFO(priv,
232 "Error finding ucode command mandatory fields\n");
233 return -ENOMSG;
234 }
235
c7c1115b 236 cmd.flags = CMD_ON_DEMAND;
4613e72d 237 cmd.id = nla_get_u8(tb[IWL_TM_ATTR_UCODE_CMD_ID]);
3fa50738
JB		 238 cmd.data[0] = nla_data(tb[IWL_TM_ATTR_UCODE_CMD_DATA]);
239 cmd.len[0] = nla_len(tb[IWL_TM_ATTR_UCODE_CMD_DATA]);
4ce7cc2b 240 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
4613e72d 241 IWL_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x,"
3fa50738 242 " len %d\n", cmd.id, cmd.flags, cmd.len[0]);
4613e72d 243 /* ok, let's submit the command to ucode */
bdfbf092 244 return trans_send_cmd(priv, &cmd);
4613e72d
CK		 245}
246
247
248/*
249 * This function handles the user application commands for register access.
250 *
251 * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the
252 * handlers respectively.
253 *
254 * If it's an unknown commdn ID, -ENOSYS is returned; or -ENOMSG if the
255 * mandatory fields(IWL_TM_ATTR_REG_OFFSET,IWL_TM_ATTR_REG_VALUE32,
256 * IWL_TM_ATTR_REG_VALUE8) are missing; Otherwise 0 is replied indicating
257 * the success of the command execution.
258 *
259 * If IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_REG_READ32, the register read
260 * value is returned with IWL_TM_ATTR_REG_VALUE32.
261 *
262 * @hw: ieee80211_hw object that represents the device
263 * @tb: gnl message fields from the user space
264 */
265static int iwl_testmode_reg(struct ieee80211_hw *hw, struct nlattr **tb)
266{
267 struct iwl_priv *priv = hw->priv;
268 u32 ofs, val32;
269 u8 val8;
270 struct sk_buff *skb;
271 int status = 0;
272
273 if (!tb[IWL_TM_ATTR_REG_OFFSET]) {
274 IWL_DEBUG_INFO(priv, "Error finding register offset\n");
275 return -ENOMSG;
276 }
277 ofs = nla_get_u32(tb[IWL_TM_ATTR_REG_OFFSET]);
278 IWL_INFO(priv, "testmode register access command offset 0x%x\n", ofs);
279
280 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
281 case IWL_TM_CMD_APP2DEV_REG_READ32:
282 val32 = iwl_read32(priv, ofs);
283 IWL_INFO(priv, "32bit value to read 0x%x\n", val32);
284
285 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20);
286 if (!skb) {
287 IWL_DEBUG_INFO(priv, "Error allocating memory\n");
288 return -ENOMEM;
289 }
290 NLA_PUT_U32(skb, IWL_TM_ATTR_REG_VALUE32, val32);
291 status = cfg80211_testmode_reply(skb);
292 if (status < 0)
293 IWL_DEBUG_INFO(priv,
294 "Error sending msg : %d\n", status);
295 break;
296 case IWL_TM_CMD_APP2DEV_REG_WRITE32:
297 if (!tb[IWL_TM_ATTR_REG_VALUE32]) {
298 IWL_DEBUG_INFO(priv,
299 "Error finding value to write\n");
300 return -ENOMSG;
301 } else {
302 val32 = nla_get_u32(tb[IWL_TM_ATTR_REG_VALUE32]);
303 IWL_INFO(priv, "32bit value to write 0x%x\n", val32);
304 iwl_write32(priv, ofs, val32);
305 }
306 break;
307 case IWL_TM_CMD_APP2DEV_REG_WRITE8:
308 if (!tb[IWL_TM_ATTR_REG_VALUE8]) {
309 IWL_DEBUG_INFO(priv, "Error finding value to write\n");
310 return -ENOMSG;
311 } else {
312 val8 = nla_get_u8(tb[IWL_TM_ATTR_REG_VALUE8]);
313 IWL_INFO(priv, "8bit value to write 0x%x\n", val8);
314 iwl_write8(priv, ofs, val8);
315 }
316 break;
317 default:
318 IWL_DEBUG_INFO(priv, "Unknown testmode register command ID\n");
319 return -ENOSYS;
320 }
321
322 return status;
323
324nla_put_failure:
325 kfree_skb(skb);
326 return -EMSGSIZE;
327}
328
329
330static int iwl_testmode_cfg_init_calib(struct iwl_priv *priv)
331{
332 struct iwl_notification_wait calib_wait;
333 int ret;
334
335 iwlagn_init_notification_wait(priv, &calib_wait,
336 CALIBRATION_COMPLETE_NOTIFICATION,
337 NULL, NULL);
338 ret = iwlagn_init_alive_start(priv);
339 if (ret) {
340 IWL_DEBUG_INFO(priv,
341 "Error configuring init calibration: %d\n", ret);
342 goto cfg_init_calib_error;
343 }
344
345 ret = iwlagn_wait_notification(priv, &calib_wait, 2 * HZ);
346 if (ret)
347 IWL_DEBUG_INFO(priv, "Error detecting"
348 " CALIBRATION_COMPLETE_NOTIFICATION: %d\n", ret);
349 return ret;
350
351cfg_init_calib_error:
352 iwlagn_remove_notification(priv, &calib_wait);
353 return ret;
354}
355
356/*
357 * This function handles the user application commands for driver.
358 *
359 * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the
360 * handlers respectively.
361 *
362 * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned
363 * value of the actual command execution is replied to the user application.
364 *
365 * If there's any message responding to the user space, IWL_TM_ATTR_SYNC_RSP
366 * is used for carry the message while IWL_TM_ATTR_COMMAND must set to
367 * IWL_TM_CMD_DEV2APP_SYNC_RSP.
368 *
369 * @hw: ieee80211_hw object that represents the device
370 * @tb: gnl message fields from the user space
371 */
372static int iwl_testmode_driver(struct ieee80211_hw *hw, struct nlattr **tb)
373{
374 struct iwl_priv *priv = hw->priv;
375 struct sk_buff *skb;
376 unsigned char *rsp_data_ptr = NULL;
377 int status = 0, rsp_data_len = 0;
378
379 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
380 case IWL_TM_CMD_APP2DEV_GET_DEVICENAME:
381 rsp_data_ptr = (unsigned char *)priv->cfg->name;
382 rsp_data_len = strlen(priv->cfg->name);
383 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
384 rsp_data_len + 20);
385 if (!skb) {
386 IWL_DEBUG_INFO(priv,
387 "Error allocating memory\n");
388 return -ENOMEM;
389 }
390 NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND,
391 IWL_TM_CMD_DEV2APP_SYNC_RSP);
392 NLA_PUT(skb, IWL_TM_ATTR_SYNC_RSP,
393 rsp_data_len, rsp_data_ptr);
394 status = cfg80211_testmode_reply(skb);
395 if (status < 0)
396 IWL_DEBUG_INFO(priv, "Error sending msg : %d\n",
397 status);
398 break;
399
400 case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW:
401 status = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_init,
872907bb 402 IWL_UCODE_INIT);
4613e72d
CK		 403 if (status)
404 IWL_DEBUG_INFO(priv,
405 "Error loading init ucode: %d\n", status);
406 break;
407
408 case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB:
409 iwl_testmode_cfg_init_calib(priv);
410 iwlagn_stop_device(priv);
411 break;
412
413 case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW:
414 status = iwlagn_load_ucode_wait_alive(priv,
415 &priv->ucode_rt,
872907bb 416 IWL_UCODE_REGULAR);
4613e72d
CK		 417 if (status) {
418 IWL_DEBUG_INFO(priv,
419 "Error loading runtime ucode: %d\n", status);
420 break;
421 }
422 status = iwl_alive_start(priv);
423 if (status)
424 IWL_DEBUG_INFO(priv,
425 "Error starting the device: %d\n", status);
426 break;
427
4babc358
WYG		 428 case IWL_TM_CMD_APP2DEV_GET_EEPROM:
429 if (priv->eeprom) {
430 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
431 priv->cfg->base_params->eeprom_size + 20);
432 if (!skb) {
433 IWL_DEBUG_INFO(priv,
434 "Error allocating memory\n");
435 return -ENOMEM;
436 }
437 NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND,
438 IWL_TM_CMD_DEV2APP_EEPROM_RSP);
439 NLA_PUT(skb, IWL_TM_ATTR_EEPROM,
440 priv->cfg->base_params->eeprom_size,
441 priv->eeprom);
442 status = cfg80211_testmode_reply(skb);
443 if (status < 0)
444 IWL_DEBUG_INFO(priv,
445 "Error sending msg : %d\n",
446 status);
447 } else
448 return -EFAULT;
449 break;
450
6489854b
WYG		 451 case IWL_TM_CMD_APP2DEV_FIXRATE_REQ:
452 if (!tb[IWL_TM_ATTR_FIXRATE]) {
453 IWL_DEBUG_INFO(priv,
454 "Error finding fixrate setting\n");
455 return -ENOMSG;
456 }
4e308119 457 priv->tm_fixed_rate = nla_get_u32(tb[IWL_TM_ATTR_FIXRATE]);
6489854b
WYG		 458 break;
459
4613e72d
CK		 460 default:
461 IWL_DEBUG_INFO(priv, "Unknown testmode driver command ID\n");
462 return -ENOSYS;
463 }
464 return status;
465
466nla_put_failure:
467 kfree_skb(skb);
468 return -EMSGSIZE;
469}
470
7a4e5281
WYG		 471
472/*
473 * This function handles the user application commands for uCode trace
474 *
475 * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the
476 * handlers respectively.
477 *
478 * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned
479 * value of the actual command execution is replied to the user application.
480 *
481 * @hw: ieee80211_hw object that represents the device
482 * @tb: gnl message fields from the user space
483 */
484static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb)
485{
486 struct iwl_priv *priv = hw->priv;
487 struct sk_buff *skb;
488 int status = 0;
3599d39a 489 struct device *dev = priv->bus.dev;
7a4e5281
WYG		 490
491 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
492 case IWL_TM_CMD_APP2DEV_BEGIN_TRACE:
493 if (priv->testmode_trace.trace_enabled)
494 return -EBUSY;
495
49b72100
WYG		 496 if (!tb[IWL_TM_ATTR_TRACE_SIZE])
497 priv->testmode_trace.buff_size = TRACE_BUFF_SIZE_DEF;
498 else
499 priv->testmode_trace.buff_size =
500 nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]);
501 if (!priv->testmode_trace.buff_size)
502 return -EINVAL;
503 if (priv->testmode_trace.buff_size < TRACE_BUFF_SIZE_MIN ||
504 priv->testmode_trace.buff_size > TRACE_BUFF_SIZE_MAX)
505 return -EINVAL;
506
507 priv->testmode_trace.total_size =
508 priv->testmode_trace.buff_size + TRACE_BUFF_PADD;
7a4e5281
WYG		 509 priv->testmode_trace.cpu_addr =
510 dma_alloc_coherent(dev,
49b72100 511 priv->testmode_trace.total_size,
7a4e5281
WYG		 512 &priv->testmode_trace.dma_addr,
513 GFP_KERNEL);
514 if (!priv->testmode_trace.cpu_addr)
515 return -ENOMEM;
516 priv->testmode_trace.trace_enabled = true;
517 priv->testmode_trace.trace_addr = (u8 *)PTR_ALIGN(
518 priv->testmode_trace.cpu_addr, 0x100);
519 memset(priv->testmode_trace.trace_addr, 0x03B,
49b72100 520 priv->testmode_trace.buff_size);
7a4e5281
WYG		 521 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
522 sizeof(priv->testmode_trace.dma_addr) + 20);
523 if (!skb) {
524 IWL_DEBUG_INFO(priv,
525 "Error allocating memory\n");
526 iwl_trace_cleanup(priv);
527 return -ENOMEM;
528 }
529 NLA_PUT(skb, IWL_TM_ATTR_TRACE_ADDR,
530 sizeof(priv->testmode_trace.dma_addr),
531 (u64 *)&priv->testmode_trace.dma_addr);
532 status = cfg80211_testmode_reply(skb);
533 if (status < 0) {
534 IWL_DEBUG_INFO(priv,
535 "Error sending msg : %d\n",
536 status);
537 }
eb64dca0
WYG		 538 priv->testmode_trace.num_chunks =
539 DIV_ROUND_UP(priv->testmode_trace.buff_size,
540 TRACE_CHUNK_SIZE);
7a4e5281
WYG		 541 break;
542
543 case IWL_TM_CMD_APP2DEV_END_TRACE:
544 iwl_trace_cleanup(priv);
545 break;
7a4e5281
WYG		 546 default:
547 IWL_DEBUG_INFO(priv, "Unknown testmode mem command ID\n");
548 return -ENOSYS;
549 }
550 return status;
551
552nla_put_failure:
553 kfree_skb(skb);
554 if (nla_get_u32(tb[IWL_TM_ATTR_COMMAND]) ==
555 IWL_TM_CMD_APP2DEV_BEGIN_TRACE)
556 iwl_trace_cleanup(priv);
557 return -EMSGSIZE;
558}
559
eb64dca0
WYG		 560static int iwl_testmode_trace_dump(struct ieee80211_hw *hw, struct nlattr **tb,
561 struct sk_buff *skb,
562 struct netlink_callback *cb)
563{
564 struct iwl_priv *priv = hw->priv;
565 int idx, length;
566
567 if (priv->testmode_trace.trace_enabled &&
568 priv->testmode_trace.trace_addr) {
569 idx = cb->args[4];
570 if (idx >= priv->testmode_trace.num_chunks)
571 return -ENOENT;
572 length = TRACE_CHUNK_SIZE;
573 if (((idx + 1) == priv->testmode_trace.num_chunks) &&
574 (priv->testmode_trace.buff_size % TRACE_CHUNK_SIZE))
575 length = priv->testmode_trace.buff_size %
576 TRACE_CHUNK_SIZE;
577
578 NLA_PUT(skb, IWL_TM_ATTR_TRACE_DUMP, length,
579 priv->testmode_trace.trace_addr +
580 (TRACE_CHUNK_SIZE * idx));
581 idx++;
582 cb->args[4] = idx;
583 return 0;
584 } else
585 return -EFAULT;
586
587 nla_put_failure:
588 return -ENOBUFS;
589}
590
e98a1939
WYG		 591/*
592 * This function handles the user application switch ucode ownership.
593 *
594 * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_OWNER and
595 * decide who the current owner of the uCode
596 *
597 * If the current owner is OWNERSHIP_TM, then the only host command
598 * can deliver to uCode is from testmode, all the other host commands
599 * will dropped.
600 *
601 * default driver is the owner of uCode in normal operational mode
602 *
603 * @hw: ieee80211_hw object that represents the device
604 * @tb: gnl message fields from the user space
605 */
606static int iwl_testmode_ownership(struct ieee80211_hw *hw, struct nlattr **tb)
607{
608 struct iwl_priv *priv = hw->priv;
609 u8 owner;
610
611 if (!tb[IWL_TM_ATTR_UCODE_OWNER]) {
612 IWL_DEBUG_INFO(priv, "Error finding ucode owner\n");
613 return -ENOMSG;
614 }
615
616 owner = nla_get_u8(tb[IWL_TM_ATTR_UCODE_OWNER]);
617 if ((owner == IWL_OWNERSHIP_DRIVER) || (owner == IWL_OWNERSHIP_TM))
618 priv->ucode_owner = owner;
619 else {
620 IWL_DEBUG_INFO(priv, "Invalid owner\n");
621 return -EINVAL;
622 }
623 return 0;
624}
625
626
4613e72d
CK		 627/* The testmode gnl message handler that takes the gnl message from the
628 * user space and parses it per the policy iwl_testmode_gnl_msg_policy, then
629 * invoke the corresponding handlers.
630 *
631 * This function is invoked when there is user space application sending
632 * gnl message through the testmode tunnel NL80211_CMD_TESTMODE regulated
633 * by nl80211.
634 *
635 * It retrieves the mandatory field, IWL_TM_ATTR_COMMAND, before
636 * dispatching it to the corresponding handler.
637 *
638 * If IWL_TM_ATTR_COMMAND is missing, -ENOMSG is replied to user application;
639 * -ENOSYS is replied to the user application if the command is unknown;
640 * Otherwise, the command is dispatched to the respective handler.
641 *
642 * @hw: ieee80211_hw object that represents the device
643 * @data: pointer to user space message
644 * @len: length in byte of @data
645 */
646int iwl_testmode_cmd(struct ieee80211_hw *hw, void *data, int len)
647{
a6779278 648 struct nlattr *tb[IWL_TM_ATTR_MAX];
4613e72d
CK		 649 struct iwl_priv *priv = hw->priv;
650 int result;
651
652 result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len,
653 iwl_testmode_gnl_msg_policy);
654 if (result != 0) {
655 IWL_DEBUG_INFO(priv,
656 "Error parsing the gnl message : %d\n", result);
657 return result;
658 }
659
660 /* IWL_TM_ATTR_COMMAND is absolutely mandatory */
661 if (!tb[IWL_TM_ATTR_COMMAND]) {
662 IWL_DEBUG_INFO(priv, "Error finding testmode command type\n");
663 return -ENOMSG;
664 }
665 /* in case multiple accesses to the device happens */
666 mutex_lock(&priv->mutex);
667
668 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
669 case IWL_TM_CMD_APP2DEV_UCODE:
670 IWL_DEBUG_INFO(priv, "testmode cmd to uCode\n");
671 result = iwl_testmode_ucode(hw, tb);
672 break;
673 case IWL_TM_CMD_APP2DEV_REG_READ32:
674 case IWL_TM_CMD_APP2DEV_REG_WRITE32:
675 case IWL_TM_CMD_APP2DEV_REG_WRITE8:
676 IWL_DEBUG_INFO(priv, "testmode cmd to register\n");
677 result = iwl_testmode_reg(hw, tb);
678 break;
679 case IWL_TM_CMD_APP2DEV_GET_DEVICENAME:
680 case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW:
681 case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB:
682 case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW:
4babc358 683 case IWL_TM_CMD_APP2DEV_GET_EEPROM:
6489854b 684 case IWL_TM_CMD_APP2DEV_FIXRATE_REQ:
4613e72d
CK		 685 IWL_DEBUG_INFO(priv, "testmode cmd to driver\n");
686 result = iwl_testmode_driver(hw, tb);
687 break;
7a4e5281
WYG		 688
689 case IWL_TM_CMD_APP2DEV_BEGIN_TRACE:
690 case IWL_TM_CMD_APP2DEV_END_TRACE:
691 case IWL_TM_CMD_APP2DEV_READ_TRACE:
692 IWL_DEBUG_INFO(priv, "testmode uCode trace cmd to driver\n");
693 result = iwl_testmode_trace(hw, tb);
694 break;
695
e98a1939
WYG		 696 case IWL_TM_CMD_APP2DEV_OWNERSHIP:
697 IWL_DEBUG_INFO(priv, "testmode change uCode ownership\n");
698 result = iwl_testmode_ownership(hw, tb);
699 break;
700
4613e72d
CK		 701 default:
702 IWL_DEBUG_INFO(priv, "Unknown testmode command\n");
703 result = -ENOSYS;
704 break;
705 }
706
707 mutex_unlock(&priv->mutex);
708 return result;
709}
eb64dca0
WYG		 710
711int iwl_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb,
712 struct netlink_callback *cb,
713 void *data, int len)
714{
715 struct nlattr *tb[IWL_TM_ATTR_MAX];
716 struct iwl_priv *priv = hw->priv;
717 int result;
718 u32 cmd;
719
720 if (cb->args[3]) {
721 /* offset by 1 since commands start at 0 */
722 cmd = cb->args[3] - 1;
723 } else {
724 result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len,
725 iwl_testmode_gnl_msg_policy);
726 if (result) {
727 IWL_DEBUG_INFO(priv,
728 "Error parsing the gnl message : %d\n", result);
729 return result;
730 }
731
732 /* IWL_TM_ATTR_COMMAND is absolutely mandatory */
733 if (!tb[IWL_TM_ATTR_COMMAND]) {
734 IWL_DEBUG_INFO(priv,
735 "Error finding testmode command type\n");
736 return -ENOMSG;
737 }
738 cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]);
739 cb->args[3] = cmd + 1;
740 }
741
742 /* in case multiple accesses to the device happens */
743 mutex_lock(&priv->mutex);
744 switch (cmd) {
745 case IWL_TM_CMD_APP2DEV_READ_TRACE:
746 IWL_DEBUG_INFO(priv, "uCode trace cmd to driver\n");
747 result = iwl_testmode_trace_dump(hw, tb, skb, cb);
748 break;
749 default:
750 result = -EINVAL;
751 break;
752 }
753
754 mutex_unlock(&priv->mutex);
755 return result;
756}
Linux kernel - Deliverables
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