projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
iwlagn: iwl_tid_data moves to iwl-shared
[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"
4613e72d
CK		 75#include "iwl-io.h"
76#include "iwl-agn.h"
77#include "iwl-testmode.h"
bdfbf092 78#include "iwl-trans.h"
4613e72d
CK		 79
80/* The TLVs used in the gnl message policy between the kernel module and
81 * user space application. iwl_testmode_gnl_msg_policy is to be carried
82 * through the NL80211_CMD_TESTMODE channel regulated by nl80211.
83 * See iwl-testmode.h
84 */
85static
86struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = {
87 [IWL_TM_ATTR_COMMAND] = { .type = NLA_U32, },
88
89 [IWL_TM_ATTR_UCODE_CMD_ID] = { .type = NLA_U8, },
90 [IWL_TM_ATTR_UCODE_CMD_DATA] = { .type = NLA_UNSPEC, },
91
92 [IWL_TM_ATTR_REG_OFFSET] = { .type = NLA_U32, },
93 [IWL_TM_ATTR_REG_VALUE8] = { .type = NLA_U8, },
94 [IWL_TM_ATTR_REG_VALUE32] = { .type = NLA_U32, },
95
96 [IWL_TM_ATTR_SYNC_RSP] = { .type = NLA_UNSPEC, },
97 [IWL_TM_ATTR_UCODE_RX_PKT] = { .type = NLA_UNSPEC, },
7a4e5281 98
4babc358
WYG		 99 [IWL_TM_ATTR_EEPROM] = { .type = NLA_UNSPEC, },
100
7a4e5281 101 [IWL_TM_ATTR_TRACE_ADDR] = { .type = NLA_UNSPEC, },
eb64dca0 102 [IWL_TM_ATTR_TRACE_DUMP] = { .type = NLA_UNSPEC, },
49b72100 103 [IWL_TM_ATTR_TRACE_SIZE] = { .type = NLA_U32, },
7a4e5281 104
6489854b 105 [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, },
49b72100 106
e98a1939 107 [IWL_TM_ATTR_UCODE_OWNER] = { .type = NLA_U8, },
4613e72d
CK		 108};
109
110/*
111 * See the struct iwl_rx_packet in iwl-commands.h for the format of the
112 * received events from the device
113 */
114static inline int get_event_length(struct iwl_rx_mem_buffer *rxb)
115{
116 struct iwl_rx_packet *pkt = rxb_addr(rxb);
117 if (pkt)
118 return le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
119 else
120 return 0;
121}
122
123
124/*
125 * This function multicasts the spontaneous messages from the device to the
126 * user space. It is invoked whenever there is a received messages
127 * from the device. This function is called within the ISR of the rx handlers
128 * in iwlagn driver.
129 *
130 * The parsing of the message content is left to the user space application,
131 * The message content is treated as unattacked raw data and is encapsulated
132 * with IWL_TM_ATTR_UCODE_RX_PKT multicasting to the user space.
133 *
134 * @priv: the instance of iwlwifi device
135 * @rxb: pointer to rx data content received by the ISR
136 *
137 * See the message policies and TLVs in iwl_testmode_gnl_msg_policy[].
138 * For the messages multicasting to the user application, the mandatory
139 * TLV fields are :
140 * IWL_TM_ATTR_COMMAND must be IWL_TM_CMD_DEV2APP_UCODE_RX_PKT
141 * IWL_TM_ATTR_UCODE_RX_PKT for carrying the message content
142 */
143
144static void iwl_testmode_ucode_rx_pkt(struct iwl_priv *priv,
145 struct iwl_rx_mem_buffer *rxb)
146{
147 struct ieee80211_hw *hw = priv->hw;
148 struct sk_buff *skb;
149 void *data;
150 int length;
151
152 data = (void *)rxb_addr(rxb);
153 length = get_event_length(rxb);
154
155 if (!data || length == 0)
156 return;
157
158 skb = cfg80211_testmode_alloc_event_skb(hw->wiphy, 20 + length,
159 GFP_ATOMIC);
160 if (skb == NULL) {
161 IWL_DEBUG_INFO(priv,
162 "Run out of memory for messages to user space ?\n");
163 return;
164 }
165 NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, IWL_TM_CMD_DEV2APP_UCODE_RX_PKT);
166 NLA_PUT(skb, IWL_TM_ATTR_UCODE_RX_PKT, length, data);
167 cfg80211_testmode_event(skb, GFP_ATOMIC);
168 return;
169
170nla_put_failure:
171 kfree_skb(skb);
172 IWL_DEBUG_INFO(priv, "Ouch, overran buffer, check allocation!\n");
173}
174
175void iwl_testmode_init(struct iwl_priv *priv)
176{
177 priv->pre_rx_handler = iwl_testmode_ucode_rx_pkt;
7a4e5281
WYG		 178 priv->testmode_trace.trace_enabled = false;
179}
180
181static void iwl_trace_cleanup(struct iwl_priv *priv)
182{
7a4e5281
WYG		 183 if (priv->testmode_trace.trace_enabled) {
184 if (priv->testmode_trace.cpu_addr &&
185 priv->testmode_trace.dma_addr)
d5934110 186 dma_free_coherent(priv->bus->dev,
49b72100 187 priv->testmode_trace.total_size,
7a4e5281
WYG		 188 priv->testmode_trace.cpu_addr,
189 priv->testmode_trace.dma_addr);
190 priv->testmode_trace.trace_enabled = false;
191 priv->testmode_trace.cpu_addr = NULL;
192 priv->testmode_trace.trace_addr = NULL;
193 priv->testmode_trace.dma_addr = 0;
49b72100
WYG		 194 priv->testmode_trace.buff_size = 0;
195 priv->testmode_trace.total_size = 0;
7a4e5281
WYG		 196 }
197}
198
199
200void iwl_testmode_cleanup(struct iwl_priv *priv)
201{
202 iwl_trace_cleanup(priv);
4613e72d
CK		 203}
204
205/*
206 * This function handles the user application commands to the ucode.
207 *
208 * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_CMD_ID and
209 * IWL_TM_ATTR_UCODE_CMD_DATA and calls to the handler to send the
210 * host command to the ucode.
211 *
212 * If any mandatory field is missing, -ENOMSG is replied to the user space
213 * application; otherwise, the actual execution result of the host command to
214 * ucode is replied.
215 *
216 * @hw: ieee80211_hw object that represents the device
217 * @tb: gnl message fields from the user space
218 */
219static int iwl_testmode_ucode(struct ieee80211_hw *hw, struct nlattr **tb)
220{
221 struct iwl_priv *priv = hw->priv;
222 struct iwl_host_cmd cmd;
223
224 memset(&cmd, 0, sizeof(struct iwl_host_cmd));
225
226 if (!tb[IWL_TM_ATTR_UCODE_CMD_ID] ||
227 !tb[IWL_TM_ATTR_UCODE_CMD_DATA]) {
228 IWL_DEBUG_INFO(priv,
229 "Error finding ucode command mandatory fields\n");
230 return -ENOMSG;
231 }
232
c7c1115b 233 cmd.flags = CMD_ON_DEMAND;
4613e72d 234 cmd.id = nla_get_u8(tb[IWL_TM_ATTR_UCODE_CMD_ID]);
3fa50738
JB		 235 cmd.data[0] = nla_data(tb[IWL_TM_ATTR_UCODE_CMD_DATA]);
236 cmd.len[0] = nla_len(tb[IWL_TM_ATTR_UCODE_CMD_DATA]);
4ce7cc2b 237 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
4613e72d 238 IWL_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x,"
3fa50738 239 " len %d\n", cmd.id, cmd.flags, cmd.len[0]);
4613e72d 240 /* ok, let's submit the command to ucode */
e6bb4c9c 241 return iwl_trans_send_cmd(trans(priv), &cmd);
4613e72d
CK		 242}
243
244
245/*
246 * This function handles the user application commands for register access.
247 *
248 * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the
249 * handlers respectively.
250 *
251 * If it's an unknown commdn ID, -ENOSYS is returned; or -ENOMSG if the
252 * mandatory fields(IWL_TM_ATTR_REG_OFFSET,IWL_TM_ATTR_REG_VALUE32,
253 * IWL_TM_ATTR_REG_VALUE8) are missing; Otherwise 0 is replied indicating
254 * the success of the command execution.
255 *
256 * If IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_REG_READ32, the register read
257 * value is returned with IWL_TM_ATTR_REG_VALUE32.
258 *
259 * @hw: ieee80211_hw object that represents the device
260 * @tb: gnl message fields from the user space
261 */
262static int iwl_testmode_reg(struct ieee80211_hw *hw, struct nlattr **tb)
263{
264 struct iwl_priv *priv = hw->priv;
265 u32 ofs, val32;
266 u8 val8;
267 struct sk_buff *skb;
268 int status = 0;
269
270 if (!tb[IWL_TM_ATTR_REG_OFFSET]) {
271 IWL_DEBUG_INFO(priv, "Error finding register offset\n");
272 return -ENOMSG;
273 }
274 ofs = nla_get_u32(tb[IWL_TM_ATTR_REG_OFFSET]);
275 IWL_INFO(priv, "testmode register access command offset 0x%x\n", ofs);
276
277 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
278 case IWL_TM_CMD_APP2DEV_REG_READ32:
83ed9015 279 val32 = iwl_read32(bus(priv), ofs);
4613e72d
CK		 280 IWL_INFO(priv, "32bit value to read 0x%x\n", val32);
281
282 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20);
283 if (!skb) {
284 IWL_DEBUG_INFO(priv, "Error allocating memory\n");
285 return -ENOMEM;
286 }
287 NLA_PUT_U32(skb, IWL_TM_ATTR_REG_VALUE32, val32);
288 status = cfg80211_testmode_reply(skb);
289 if (status < 0)
290 IWL_DEBUG_INFO(priv,
291 "Error sending msg : %d\n", status);
292 break;
293 case IWL_TM_CMD_APP2DEV_REG_WRITE32:
294 if (!tb[IWL_TM_ATTR_REG_VALUE32]) {
295 IWL_DEBUG_INFO(priv,
296 "Error finding value to write\n");
297 return -ENOMSG;
298 } else {
299 val32 = nla_get_u32(tb[IWL_TM_ATTR_REG_VALUE32]);
300 IWL_INFO(priv, "32bit value to write 0x%x\n", val32);
83ed9015 301 iwl_write32(bus(priv), ofs, val32);
4613e72d
CK		 302 }
303 break;
304 case IWL_TM_CMD_APP2DEV_REG_WRITE8:
305 if (!tb[IWL_TM_ATTR_REG_VALUE8]) {
306 IWL_DEBUG_INFO(priv, "Error finding value to write\n");
307 return -ENOMSG;
308 } else {
309 val8 = nla_get_u8(tb[IWL_TM_ATTR_REG_VALUE8]);
310 IWL_INFO(priv, "8bit value to write 0x%x\n", val8);
83ed9015 311 iwl_write8(bus(priv), ofs, val8);
4613e72d
CK		 312 }
313 break;
314 default:
315 IWL_DEBUG_INFO(priv, "Unknown testmode register command ID\n");
316 return -ENOSYS;
317 }
318
319 return status;
320
321nla_put_failure:
322 kfree_skb(skb);
323 return -EMSGSIZE;
324}
325
326
327static int iwl_testmode_cfg_init_calib(struct iwl_priv *priv)
328{
329 struct iwl_notification_wait calib_wait;
330 int ret;
331
332 iwlagn_init_notification_wait(priv, &calib_wait,
333 CALIBRATION_COMPLETE_NOTIFICATION,
334 NULL, NULL);
335 ret = iwlagn_init_alive_start(priv);
336 if (ret) {
337 IWL_DEBUG_INFO(priv,
338 "Error configuring init calibration: %d\n", ret);
339 goto cfg_init_calib_error;
340 }
341
342 ret = iwlagn_wait_notification(priv, &calib_wait, 2 * HZ);
343 if (ret)
344 IWL_DEBUG_INFO(priv, "Error detecting"
345 " CALIBRATION_COMPLETE_NOTIFICATION: %d\n", ret);
346 return ret;
347
348cfg_init_calib_error:
349 iwlagn_remove_notification(priv, &calib_wait);
350 return ret;
351}
352
353/*
354 * This function handles the user application commands for driver.
355 *
356 * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the
357 * handlers respectively.
358 *
359 * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned
360 * value of the actual command execution is replied to the user application.
361 *
362 * If there's any message responding to the user space, IWL_TM_ATTR_SYNC_RSP
363 * is used for carry the message while IWL_TM_ATTR_COMMAND must set to
364 * IWL_TM_CMD_DEV2APP_SYNC_RSP.
365 *
366 * @hw: ieee80211_hw object that represents the device
367 * @tb: gnl message fields from the user space
368 */
369static int iwl_testmode_driver(struct ieee80211_hw *hw, struct nlattr **tb)
370{
371 struct iwl_priv *priv = hw->priv;
372 struct sk_buff *skb;
373 unsigned char *rsp_data_ptr = NULL;
374 int status = 0, rsp_data_len = 0;
375
376 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
377 case IWL_TM_CMD_APP2DEV_GET_DEVICENAME:
378 rsp_data_ptr = (unsigned char *)priv->cfg->name;
379 rsp_data_len = strlen(priv->cfg->name);
380 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
381 rsp_data_len + 20);
382 if (!skb) {
383 IWL_DEBUG_INFO(priv,
384 "Error allocating memory\n");
385 return -ENOMEM;
386 }
387 NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND,
388 IWL_TM_CMD_DEV2APP_SYNC_RSP);
389 NLA_PUT(skb, IWL_TM_ATTR_SYNC_RSP,
390 rsp_data_len, rsp_data_ptr);
391 status = cfg80211_testmode_reply(skb);
392 if (status < 0)
393 IWL_DEBUG_INFO(priv, "Error sending msg : %d\n",
394 status);
395 break;
396
397 case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW:
398 status = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_init,
872907bb 399 IWL_UCODE_INIT);
4613e72d
CK		 400 if (status)
401 IWL_DEBUG_INFO(priv,
402 "Error loading init ucode: %d\n", status);
403 break;
404
405 case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB:
406 iwl_testmode_cfg_init_calib(priv);
e6bb4c9c 407 iwl_trans_stop_device(trans(priv));
4613e72d
CK		 408 break;
409
410 case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW:
411 status = iwlagn_load_ucode_wait_alive(priv,
412 &priv->ucode_rt,
872907bb 413 IWL_UCODE_REGULAR);
4613e72d
CK		 414 if (status) {
415 IWL_DEBUG_INFO(priv,
416 "Error loading runtime ucode: %d\n", status);
417 break;
418 }
419 status = iwl_alive_start(priv);
420 if (status)
421 IWL_DEBUG_INFO(priv,
422 "Error starting the device: %d\n", status);
423 break;
424
4babc358
WYG		 425 case IWL_TM_CMD_APP2DEV_GET_EEPROM:
426 if (priv->eeprom) {
427 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
428 priv->cfg->base_params->eeprom_size + 20);
429 if (!skb) {
430 IWL_DEBUG_INFO(priv,
431 "Error allocating memory\n");
432 return -ENOMEM;
433 }
434 NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND,
435 IWL_TM_CMD_DEV2APP_EEPROM_RSP);
436 NLA_PUT(skb, IWL_TM_ATTR_EEPROM,
437 priv->cfg->base_params->eeprom_size,
438 priv->eeprom);
439 status = cfg80211_testmode_reply(skb);
440 if (status < 0)
441 IWL_DEBUG_INFO(priv,
442 "Error sending msg : %d\n",
443 status);
444 } else
445 return -EFAULT;
446 break;
447
6489854b
WYG		 448 case IWL_TM_CMD_APP2DEV_FIXRATE_REQ:
449 if (!tb[IWL_TM_ATTR_FIXRATE]) {
450 IWL_DEBUG_INFO(priv,
451 "Error finding fixrate setting\n");
452 return -ENOMSG;
453 }
4e308119 454 priv->tm_fixed_rate = nla_get_u32(tb[IWL_TM_ATTR_FIXRATE]);
6489854b
WYG		 455 break;
456
4613e72d
CK		 457 default:
458 IWL_DEBUG_INFO(priv, "Unknown testmode driver command ID\n");
459 return -ENOSYS;
460 }
461 return status;
462
463nla_put_failure:
464 kfree_skb(skb);
465 return -EMSGSIZE;
466}
467
7a4e5281
WYG		 468
469/*
470 * This function handles the user application commands for uCode trace
471 *
472 * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the
473 * handlers respectively.
474 *
475 * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned
476 * value of the actual command execution is replied to the user application.
477 *
478 * @hw: ieee80211_hw object that represents the device
479 * @tb: gnl message fields from the user space
480 */
481static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb)
482{
483 struct iwl_priv *priv = hw->priv;
484 struct sk_buff *skb;
485 int status = 0;
d5934110 486 struct device *dev = priv->bus->dev;
7a4e5281
WYG		 487
488 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
489 case IWL_TM_CMD_APP2DEV_BEGIN_TRACE:
490 if (priv->testmode_trace.trace_enabled)
491 return -EBUSY;
492
49b72100
WYG		 493 if (!tb[IWL_TM_ATTR_TRACE_SIZE])
494 priv->testmode_trace.buff_size = TRACE_BUFF_SIZE_DEF;
495 else
496 priv->testmode_trace.buff_size =
497 nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]);
498 if (!priv->testmode_trace.buff_size)
499 return -EINVAL;
500 if (priv->testmode_trace.buff_size < TRACE_BUFF_SIZE_MIN ||
501 priv->testmode_trace.buff_size > TRACE_BUFF_SIZE_MAX)
502 return -EINVAL;
503
504 priv->testmode_trace.total_size =
505 priv->testmode_trace.buff_size + TRACE_BUFF_PADD;
7a4e5281
WYG		 506 priv->testmode_trace.cpu_addr =
507 dma_alloc_coherent(dev,
49b72100 508 priv->testmode_trace.total_size,
7a4e5281
WYG		 509 &priv->testmode_trace.dma_addr,
510 GFP_KERNEL);
511 if (!priv->testmode_trace.cpu_addr)
512 return -ENOMEM;
513 priv->testmode_trace.trace_enabled = true;
514 priv->testmode_trace.trace_addr = (u8 *)PTR_ALIGN(
515 priv->testmode_trace.cpu_addr, 0x100);
516 memset(priv->testmode_trace.trace_addr, 0x03B,
49b72100 517 priv->testmode_trace.buff_size);
7a4e5281
WYG		 518 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
519 sizeof(priv->testmode_trace.dma_addr) + 20);
520 if (!skb) {
521 IWL_DEBUG_INFO(priv,
522 "Error allocating memory\n");
523 iwl_trace_cleanup(priv);
524 return -ENOMEM;
525 }
526 NLA_PUT(skb, IWL_TM_ATTR_TRACE_ADDR,
527 sizeof(priv->testmode_trace.dma_addr),
528 (u64 *)&priv->testmode_trace.dma_addr);
529 status = cfg80211_testmode_reply(skb);
530 if (status < 0) {
531 IWL_DEBUG_INFO(priv,
532 "Error sending msg : %d\n",
533 status);
534 }
eb64dca0
WYG		 535 priv->testmode_trace.num_chunks =
536 DIV_ROUND_UP(priv->testmode_trace.buff_size,
537 TRACE_CHUNK_SIZE);
7a4e5281
WYG		 538 break;
539
540 case IWL_TM_CMD_APP2DEV_END_TRACE:
541 iwl_trace_cleanup(priv);
542 break;
7a4e5281
WYG		 543 default:
544 IWL_DEBUG_INFO(priv, "Unknown testmode mem command ID\n");
545 return -ENOSYS;
546 }
547 return status;
548
549nla_put_failure:
550 kfree_skb(skb);
551 if (nla_get_u32(tb[IWL_TM_ATTR_COMMAND]) ==
552 IWL_TM_CMD_APP2DEV_BEGIN_TRACE)
553 iwl_trace_cleanup(priv);
554 return -EMSGSIZE;
555}
556
eb64dca0
WYG		 557static int iwl_testmode_trace_dump(struct ieee80211_hw *hw, struct nlattr **tb,
558 struct sk_buff *skb,
559 struct netlink_callback *cb)
560{
561 struct iwl_priv *priv = hw->priv;
562 int idx, length;
563
564 if (priv->testmode_trace.trace_enabled &&
565 priv->testmode_trace.trace_addr) {
566 idx = cb->args[4];
567 if (idx >= priv->testmode_trace.num_chunks)
568 return -ENOENT;
569 length = TRACE_CHUNK_SIZE;
570 if (((idx + 1) == priv->testmode_trace.num_chunks) &&
571 (priv->testmode_trace.buff_size % TRACE_CHUNK_SIZE))
572 length = priv->testmode_trace.buff_size %
573 TRACE_CHUNK_SIZE;
574
575 NLA_PUT(skb, IWL_TM_ATTR_TRACE_DUMP, length,
576 priv->testmode_trace.trace_addr +
577 (TRACE_CHUNK_SIZE * idx));
578 idx++;
579 cb->args[4] = idx;
580 return 0;
581 } else
582 return -EFAULT;
583
584 nla_put_failure:
585 return -ENOBUFS;
586}
587
e98a1939
WYG		 588/*
589 * This function handles the user application switch ucode ownership.
590 *
591 * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_OWNER and
592 * decide who the current owner of the uCode
593 *
594 * If the current owner is OWNERSHIP_TM, then the only host command
595 * can deliver to uCode is from testmode, all the other host commands
596 * will dropped.
597 *
598 * default driver is the owner of uCode in normal operational mode
599 *
600 * @hw: ieee80211_hw object that represents the device
601 * @tb: gnl message fields from the user space
602 */
603static int iwl_testmode_ownership(struct ieee80211_hw *hw, struct nlattr **tb)
604{
605 struct iwl_priv *priv = hw->priv;
606 u8 owner;
607
608 if (!tb[IWL_TM_ATTR_UCODE_OWNER]) {
609 IWL_DEBUG_INFO(priv, "Error finding ucode owner\n");
610 return -ENOMSG;
611 }
612
613 owner = nla_get_u8(tb[IWL_TM_ATTR_UCODE_OWNER]);
614 if ((owner == IWL_OWNERSHIP_DRIVER) || (owner == IWL_OWNERSHIP_TM))
615 priv->ucode_owner = owner;
616 else {
617 IWL_DEBUG_INFO(priv, "Invalid owner\n");
618 return -EINVAL;
619 }
620 return 0;
621}
622
623
4613e72d
CK		 624/* The testmode gnl message handler that takes the gnl message from the
625 * user space and parses it per the policy iwl_testmode_gnl_msg_policy, then
626 * invoke the corresponding handlers.
627 *
628 * This function is invoked when there is user space application sending
629 * gnl message through the testmode tunnel NL80211_CMD_TESTMODE regulated
630 * by nl80211.
631 *
632 * It retrieves the mandatory field, IWL_TM_ATTR_COMMAND, before
633 * dispatching it to the corresponding handler.
634 *
635 * If IWL_TM_ATTR_COMMAND is missing, -ENOMSG is replied to user application;
636 * -ENOSYS is replied to the user application if the command is unknown;
637 * Otherwise, the command is dispatched to the respective handler.
638 *
639 * @hw: ieee80211_hw object that represents the device
640 * @data: pointer to user space message
641 * @len: length in byte of @data
642 */
643int iwl_testmode_cmd(struct ieee80211_hw *hw, void *data, int len)
644{
a6779278 645 struct nlattr *tb[IWL_TM_ATTR_MAX];
4613e72d
CK		 646 struct iwl_priv *priv = hw->priv;
647 int result;
648
649 result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len,
650 iwl_testmode_gnl_msg_policy);
651 if (result != 0) {
652 IWL_DEBUG_INFO(priv,
653 "Error parsing the gnl message : %d\n", result);
654 return result;
655 }
656
657 /* IWL_TM_ATTR_COMMAND is absolutely mandatory */
658 if (!tb[IWL_TM_ATTR_COMMAND]) {
659 IWL_DEBUG_INFO(priv, "Error finding testmode command type\n");
660 return -ENOMSG;
661 }
662 /* in case multiple accesses to the device happens */
6ac2f839 663 mutex_lock(&priv->shrd->mutex);
4613e72d
CK		 664
665 switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) {
666 case IWL_TM_CMD_APP2DEV_UCODE:
667 IWL_DEBUG_INFO(priv, "testmode cmd to uCode\n");
668 result = iwl_testmode_ucode(hw, tb);
669 break;
670 case IWL_TM_CMD_APP2DEV_REG_READ32:
671 case IWL_TM_CMD_APP2DEV_REG_WRITE32:
672 case IWL_TM_CMD_APP2DEV_REG_WRITE8:
673 IWL_DEBUG_INFO(priv, "testmode cmd to register\n");
674 result = iwl_testmode_reg(hw, tb);
675 break;
676 case IWL_TM_CMD_APP2DEV_GET_DEVICENAME:
677 case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW:
678 case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB:
679 case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW:
4babc358 680 case IWL_TM_CMD_APP2DEV_GET_EEPROM:
6489854b 681 case IWL_TM_CMD_APP2DEV_FIXRATE_REQ:
4613e72d
CK		 682 IWL_DEBUG_INFO(priv, "testmode cmd to driver\n");
683 result = iwl_testmode_driver(hw, tb);
684 break;
7a4e5281
WYG		 685
686 case IWL_TM_CMD_APP2DEV_BEGIN_TRACE:
687 case IWL_TM_CMD_APP2DEV_END_TRACE:
688 case IWL_TM_CMD_APP2DEV_READ_TRACE:
689 IWL_DEBUG_INFO(priv, "testmode uCode trace cmd to driver\n");
690 result = iwl_testmode_trace(hw, tb);
691 break;
692
e98a1939
WYG		 693 case IWL_TM_CMD_APP2DEV_OWNERSHIP:
694 IWL_DEBUG_INFO(priv, "testmode change uCode ownership\n");
695 result = iwl_testmode_ownership(hw, tb);
696 break;
697
4613e72d
CK		 698 default:
699 IWL_DEBUG_INFO(priv, "Unknown testmode command\n");
700 result = -ENOSYS;
701 break;
702 }
703
6ac2f839 704 mutex_unlock(&priv->shrd->mutex);
4613e72d
CK		 705 return result;
706}
eb64dca0
WYG		 707
708int iwl_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb,
709 struct netlink_callback *cb,
710 void *data, int len)
711{
712 struct nlattr *tb[IWL_TM_ATTR_MAX];
713 struct iwl_priv *priv = hw->priv;
714 int result;
715 u32 cmd;
716
717 if (cb->args[3]) {
718 /* offset by 1 since commands start at 0 */
719 cmd = cb->args[3] - 1;
720 } else {
721 result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len,
722 iwl_testmode_gnl_msg_policy);
723 if (result) {
724 IWL_DEBUG_INFO(priv,
725 "Error parsing the gnl message : %d\n", result);
726 return result;
727 }
728
729 /* IWL_TM_ATTR_COMMAND is absolutely mandatory */
730 if (!tb[IWL_TM_ATTR_COMMAND]) {
731 IWL_DEBUG_INFO(priv,
732 "Error finding testmode command type\n");
733 return -ENOMSG;
734 }
735 cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]);
736 cb->args[3] = cmd + 1;
737 }
738
739 /* in case multiple accesses to the device happens */
6ac2f839 740 mutex_lock(&priv->shrd->mutex);
eb64dca0
WYG		 741 switch (cmd) {
742 case IWL_TM_CMD_APP2DEV_READ_TRACE:
743 IWL_DEBUG_INFO(priv, "uCode trace cmd to driver\n");
744 result = iwl_testmode_trace_dump(hw, tb, skb, cb);
745 break;
746 default:
747 result = -EINVAL;
748 break;
749 }
750
6ac2f839 751 mutex_unlock(&priv->shrd->mutex);
eb64dca0
WYG		 752 return result;
753}
Linux kernel - Deliverables
This page took 0.096639 seconds and 5 git commands to generate.