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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" | |
79 | ||
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 | */ | |
86 | static | |
87 | struct 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 | |
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 | */ | |
114 | static 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 | ||
144 | static 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 | ||
170 | nla_put_failure: | |
171 | kfree_skb(skb); | |
172 | IWL_DEBUG_INFO(priv, "Ouch, overran buffer, check allocation!\n"); | |
173 | } | |
174 | ||
175 | void 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 | ||
181 | static void iwl_trace_cleanup(struct iwl_priv *priv) | |
182 | { | |
3599d39a | 183 | struct device *dev = priv->bus.dev; |
7a4e5281 WYG |
184 | |
185 | if (priv->testmode_trace.trace_enabled) { | |
186 | if (priv->testmode_trace.cpu_addr && | |
187 | priv->testmode_trace.dma_addr) | |
188 | dma_free_coherent(dev, | |
49b72100 | 189 | priv->testmode_trace.total_size, |
7a4e5281 WYG |
190 | priv->testmode_trace.cpu_addr, |
191 | priv->testmode_trace.dma_addr); | |
192 | priv->testmode_trace.trace_enabled = false; | |
193 | priv->testmode_trace.cpu_addr = NULL; | |
194 | priv->testmode_trace.trace_addr = NULL; | |
195 | priv->testmode_trace.dma_addr = 0; | |
49b72100 WYG |
196 | priv->testmode_trace.buff_size = 0; |
197 | priv->testmode_trace.total_size = 0; | |
7a4e5281 WYG |
198 | } |
199 | } | |
200 | ||
201 | ||
202 | void iwl_testmode_cleanup(struct iwl_priv *priv) | |
203 | { | |
204 | iwl_trace_cleanup(priv); | |
4613e72d CK |
205 | } |
206 | ||
207 | /* | |
208 | * This function handles the user application commands to the ucode. | |
209 | * | |
210 | * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_CMD_ID and | |
211 | * IWL_TM_ATTR_UCODE_CMD_DATA and calls to the handler to send the | |
212 | * host command to the ucode. | |
213 | * | |
214 | * If any mandatory field is missing, -ENOMSG is replied to the user space | |
215 | * application; otherwise, the actual execution result of the host command to | |
216 | * ucode is replied. | |
217 | * | |
218 | * @hw: ieee80211_hw object that represents the device | |
219 | * @tb: gnl message fields from the user space | |
220 | */ | |
221 | static int iwl_testmode_ucode(struct ieee80211_hw *hw, struct nlattr **tb) | |
222 | { | |
223 | struct iwl_priv *priv = hw->priv; | |
224 | struct iwl_host_cmd cmd; | |
225 | ||
226 | memset(&cmd, 0, sizeof(struct iwl_host_cmd)); | |
227 | ||
228 | if (!tb[IWL_TM_ATTR_UCODE_CMD_ID] || | |
229 | !tb[IWL_TM_ATTR_UCODE_CMD_DATA]) { | |
230 | IWL_DEBUG_INFO(priv, | |
231 | "Error finding ucode command mandatory fields\n"); | |
232 | return -ENOMSG; | |
233 | } | |
234 | ||
235 | cmd.id = nla_get_u8(tb[IWL_TM_ATTR_UCODE_CMD_ID]); | |
3fa50738 JB |
236 | cmd.data[0] = nla_data(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); |
237 | cmd.len[0] = nla_len(tb[IWL_TM_ATTR_UCODE_CMD_DATA]); | |
4ce7cc2b | 238 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; |
4613e72d | 239 | IWL_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x," |
3fa50738 | 240 | " len %d\n", cmd.id, cmd.flags, cmd.len[0]); |
4613e72d CK |
241 | /* ok, let's submit the command to ucode */ |
242 | return iwl_send_cmd(priv, &cmd); | |
243 | } | |
244 | ||
245 | ||
246 | /* | |
247 | * This function handles the user application commands for register access. | |
248 | * | |
249 | * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the | |
250 | * handlers respectively. | |
251 | * | |
252 | * If it's an unknown commdn ID, -ENOSYS is returned; or -ENOMSG if the | |
253 | * mandatory fields(IWL_TM_ATTR_REG_OFFSET,IWL_TM_ATTR_REG_VALUE32, | |
254 | * IWL_TM_ATTR_REG_VALUE8) are missing; Otherwise 0 is replied indicating | |
255 | * the success of the command execution. | |
256 | * | |
257 | * If IWL_TM_ATTR_COMMAND is IWL_TM_CMD_APP2DEV_REG_READ32, the register read | |
258 | * value is returned with IWL_TM_ATTR_REG_VALUE32. | |
259 | * | |
260 | * @hw: ieee80211_hw object that represents the device | |
261 | * @tb: gnl message fields from the user space | |
262 | */ | |
263 | static int iwl_testmode_reg(struct ieee80211_hw *hw, struct nlattr **tb) | |
264 | { | |
265 | struct iwl_priv *priv = hw->priv; | |
266 | u32 ofs, val32; | |
267 | u8 val8; | |
268 | struct sk_buff *skb; | |
269 | int status = 0; | |
270 | ||
271 | if (!tb[IWL_TM_ATTR_REG_OFFSET]) { | |
272 | IWL_DEBUG_INFO(priv, "Error finding register offset\n"); | |
273 | return -ENOMSG; | |
274 | } | |
275 | ofs = nla_get_u32(tb[IWL_TM_ATTR_REG_OFFSET]); | |
276 | IWL_INFO(priv, "testmode register access command offset 0x%x\n", ofs); | |
277 | ||
278 | switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { | |
279 | case IWL_TM_CMD_APP2DEV_REG_READ32: | |
280 | val32 = iwl_read32(priv, ofs); | |
281 | IWL_INFO(priv, "32bit value to read 0x%x\n", val32); | |
282 | ||
283 | skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, 20); | |
284 | if (!skb) { | |
285 | IWL_DEBUG_INFO(priv, "Error allocating memory\n"); | |
286 | return -ENOMEM; | |
287 | } | |
288 | NLA_PUT_U32(skb, IWL_TM_ATTR_REG_VALUE32, val32); | |
289 | status = cfg80211_testmode_reply(skb); | |
290 | if (status < 0) | |
291 | IWL_DEBUG_INFO(priv, | |
292 | "Error sending msg : %d\n", status); | |
293 | break; | |
294 | case IWL_TM_CMD_APP2DEV_REG_WRITE32: | |
295 | if (!tb[IWL_TM_ATTR_REG_VALUE32]) { | |
296 | IWL_DEBUG_INFO(priv, | |
297 | "Error finding value to write\n"); | |
298 | return -ENOMSG; | |
299 | } else { | |
300 | val32 = nla_get_u32(tb[IWL_TM_ATTR_REG_VALUE32]); | |
301 | IWL_INFO(priv, "32bit value to write 0x%x\n", val32); | |
302 | iwl_write32(priv, ofs, val32); | |
303 | } | |
304 | break; | |
305 | case IWL_TM_CMD_APP2DEV_REG_WRITE8: | |
306 | if (!tb[IWL_TM_ATTR_REG_VALUE8]) { | |
307 | IWL_DEBUG_INFO(priv, "Error finding value to write\n"); | |
308 | return -ENOMSG; | |
309 | } else { | |
310 | val8 = nla_get_u8(tb[IWL_TM_ATTR_REG_VALUE8]); | |
311 | IWL_INFO(priv, "8bit value to write 0x%x\n", val8); | |
312 | iwl_write8(priv, ofs, val8); | |
313 | } | |
314 | break; | |
315 | default: | |
316 | IWL_DEBUG_INFO(priv, "Unknown testmode register command ID\n"); | |
317 | return -ENOSYS; | |
318 | } | |
319 | ||
320 | return status; | |
321 | ||
322 | nla_put_failure: | |
323 | kfree_skb(skb); | |
324 | return -EMSGSIZE; | |
325 | } | |
326 | ||
327 | ||
328 | static int iwl_testmode_cfg_init_calib(struct iwl_priv *priv) | |
329 | { | |
330 | struct iwl_notification_wait calib_wait; | |
331 | int ret; | |
332 | ||
333 | iwlagn_init_notification_wait(priv, &calib_wait, | |
334 | CALIBRATION_COMPLETE_NOTIFICATION, | |
335 | NULL, NULL); | |
336 | ret = iwlagn_init_alive_start(priv); | |
337 | if (ret) { | |
338 | IWL_DEBUG_INFO(priv, | |
339 | "Error configuring init calibration: %d\n", ret); | |
340 | goto cfg_init_calib_error; | |
341 | } | |
342 | ||
343 | ret = iwlagn_wait_notification(priv, &calib_wait, 2 * HZ); | |
344 | if (ret) | |
345 | IWL_DEBUG_INFO(priv, "Error detecting" | |
346 | " CALIBRATION_COMPLETE_NOTIFICATION: %d\n", ret); | |
347 | return ret; | |
348 | ||
349 | cfg_init_calib_error: | |
350 | iwlagn_remove_notification(priv, &calib_wait); | |
351 | return ret; | |
352 | } | |
353 | ||
354 | /* | |
355 | * This function handles the user application commands for driver. | |
356 | * | |
357 | * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the | |
358 | * handlers respectively. | |
359 | * | |
360 | * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned | |
361 | * value of the actual command execution is replied to the user application. | |
362 | * | |
363 | * If there's any message responding to the user space, IWL_TM_ATTR_SYNC_RSP | |
364 | * is used for carry the message while IWL_TM_ATTR_COMMAND must set to | |
365 | * IWL_TM_CMD_DEV2APP_SYNC_RSP. | |
366 | * | |
367 | * @hw: ieee80211_hw object that represents the device | |
368 | * @tb: gnl message fields from the user space | |
369 | */ | |
370 | static int iwl_testmode_driver(struct ieee80211_hw *hw, struct nlattr **tb) | |
371 | { | |
372 | struct iwl_priv *priv = hw->priv; | |
373 | struct sk_buff *skb; | |
374 | unsigned char *rsp_data_ptr = NULL; | |
375 | int status = 0, rsp_data_len = 0; | |
376 | ||
377 | switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { | |
378 | case IWL_TM_CMD_APP2DEV_GET_DEVICENAME: | |
379 | rsp_data_ptr = (unsigned char *)priv->cfg->name; | |
380 | rsp_data_len = strlen(priv->cfg->name); | |
381 | skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, | |
382 | rsp_data_len + 20); | |
383 | if (!skb) { | |
384 | IWL_DEBUG_INFO(priv, | |
385 | "Error allocating memory\n"); | |
386 | return -ENOMEM; | |
387 | } | |
388 | NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, | |
389 | IWL_TM_CMD_DEV2APP_SYNC_RSP); | |
390 | NLA_PUT(skb, IWL_TM_ATTR_SYNC_RSP, | |
391 | rsp_data_len, rsp_data_ptr); | |
392 | status = cfg80211_testmode_reply(skb); | |
393 | if (status < 0) | |
394 | IWL_DEBUG_INFO(priv, "Error sending msg : %d\n", | |
395 | status); | |
396 | break; | |
397 | ||
398 | case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW: | |
399 | status = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_init, | |
872907bb | 400 | IWL_UCODE_INIT); |
4613e72d CK |
401 | if (status) |
402 | IWL_DEBUG_INFO(priv, | |
403 | "Error loading init ucode: %d\n", status); | |
404 | break; | |
405 | ||
406 | case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB: | |
407 | iwl_testmode_cfg_init_calib(priv); | |
408 | iwlagn_stop_device(priv); | |
409 | break; | |
410 | ||
411 | case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW: | |
412 | status = iwlagn_load_ucode_wait_alive(priv, | |
413 | &priv->ucode_rt, | |
872907bb | 414 | IWL_UCODE_REGULAR); |
4613e72d CK |
415 | if (status) { |
416 | IWL_DEBUG_INFO(priv, | |
417 | "Error loading runtime ucode: %d\n", status); | |
418 | break; | |
419 | } | |
420 | status = iwl_alive_start(priv); | |
421 | if (status) | |
422 | IWL_DEBUG_INFO(priv, | |
423 | "Error starting the device: %d\n", status); | |
424 | break; | |
425 | ||
4babc358 WYG |
426 | case IWL_TM_CMD_APP2DEV_GET_EEPROM: |
427 | if (priv->eeprom) { | |
428 | skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, | |
429 | priv->cfg->base_params->eeprom_size + 20); | |
430 | if (!skb) { | |
431 | IWL_DEBUG_INFO(priv, | |
432 | "Error allocating memory\n"); | |
433 | return -ENOMEM; | |
434 | } | |
435 | NLA_PUT_U32(skb, IWL_TM_ATTR_COMMAND, | |
436 | IWL_TM_CMD_DEV2APP_EEPROM_RSP); | |
437 | NLA_PUT(skb, IWL_TM_ATTR_EEPROM, | |
438 | priv->cfg->base_params->eeprom_size, | |
439 | priv->eeprom); | |
440 | status = cfg80211_testmode_reply(skb); | |
441 | if (status < 0) | |
442 | IWL_DEBUG_INFO(priv, | |
443 | "Error sending msg : %d\n", | |
444 | status); | |
445 | } else | |
446 | return -EFAULT; | |
447 | break; | |
448 | ||
6489854b WYG |
449 | case IWL_TM_CMD_APP2DEV_FIXRATE_REQ: |
450 | if (!tb[IWL_TM_ATTR_FIXRATE]) { | |
451 | IWL_DEBUG_INFO(priv, | |
452 | "Error finding fixrate setting\n"); | |
453 | return -ENOMSG; | |
454 | } | |
455 | priv->dbg_fixed_rate = nla_get_u32(tb[IWL_TM_ATTR_FIXRATE]); | |
456 | break; | |
457 | ||
4613e72d CK |
458 | default: |
459 | IWL_DEBUG_INFO(priv, "Unknown testmode driver command ID\n"); | |
460 | return -ENOSYS; | |
461 | } | |
462 | return status; | |
463 | ||
464 | nla_put_failure: | |
465 | kfree_skb(skb); | |
466 | return -EMSGSIZE; | |
467 | } | |
468 | ||
7a4e5281 WYG |
469 | |
470 | /* | |
471 | * This function handles the user application commands for uCode trace | |
472 | * | |
473 | * It retrieves command ID carried with IWL_TM_ATTR_COMMAND and calls to the | |
474 | * handlers respectively. | |
475 | * | |
476 | * If it's an unknown commdn ID, -ENOSYS is replied; otherwise, the returned | |
477 | * value of the actual command execution is replied to the user application. | |
478 | * | |
479 | * @hw: ieee80211_hw object that represents the device | |
480 | * @tb: gnl message fields from the user space | |
481 | */ | |
482 | static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) | |
483 | { | |
484 | struct iwl_priv *priv = hw->priv; | |
485 | struct sk_buff *skb; | |
486 | int status = 0; | |
3599d39a | 487 | struct device *dev = priv->bus.dev; |
7a4e5281 WYG |
488 | |
489 | switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { | |
490 | case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: | |
491 | if (priv->testmode_trace.trace_enabled) | |
492 | return -EBUSY; | |
493 | ||
49b72100 WYG |
494 | if (!tb[IWL_TM_ATTR_TRACE_SIZE]) |
495 | priv->testmode_trace.buff_size = TRACE_BUFF_SIZE_DEF; | |
496 | else | |
497 | priv->testmode_trace.buff_size = | |
498 | nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]); | |
499 | if (!priv->testmode_trace.buff_size) | |
500 | return -EINVAL; | |
501 | if (priv->testmode_trace.buff_size < TRACE_BUFF_SIZE_MIN || | |
502 | priv->testmode_trace.buff_size > TRACE_BUFF_SIZE_MAX) | |
503 | return -EINVAL; | |
504 | ||
505 | priv->testmode_trace.total_size = | |
506 | priv->testmode_trace.buff_size + TRACE_BUFF_PADD; | |
7a4e5281 WYG |
507 | priv->testmode_trace.cpu_addr = |
508 | dma_alloc_coherent(dev, | |
49b72100 | 509 | priv->testmode_trace.total_size, |
7a4e5281 WYG |
510 | &priv->testmode_trace.dma_addr, |
511 | GFP_KERNEL); | |
512 | if (!priv->testmode_trace.cpu_addr) | |
513 | return -ENOMEM; | |
514 | priv->testmode_trace.trace_enabled = true; | |
515 | priv->testmode_trace.trace_addr = (u8 *)PTR_ALIGN( | |
516 | priv->testmode_trace.cpu_addr, 0x100); | |
517 | memset(priv->testmode_trace.trace_addr, 0x03B, | |
49b72100 | 518 | priv->testmode_trace.buff_size); |
7a4e5281 WYG |
519 | skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, |
520 | sizeof(priv->testmode_trace.dma_addr) + 20); | |
521 | if (!skb) { | |
522 | IWL_DEBUG_INFO(priv, | |
523 | "Error allocating memory\n"); | |
524 | iwl_trace_cleanup(priv); | |
525 | return -ENOMEM; | |
526 | } | |
527 | NLA_PUT(skb, IWL_TM_ATTR_TRACE_ADDR, | |
528 | sizeof(priv->testmode_trace.dma_addr), | |
529 | (u64 *)&priv->testmode_trace.dma_addr); | |
530 | status = cfg80211_testmode_reply(skb); | |
531 | if (status < 0) { | |
532 | IWL_DEBUG_INFO(priv, | |
533 | "Error sending msg : %d\n", | |
534 | status); | |
535 | } | |
eb64dca0 WYG |
536 | priv->testmode_trace.num_chunks = |
537 | DIV_ROUND_UP(priv->testmode_trace.buff_size, | |
538 | TRACE_CHUNK_SIZE); | |
7a4e5281 WYG |
539 | break; |
540 | ||
541 | case IWL_TM_CMD_APP2DEV_END_TRACE: | |
542 | iwl_trace_cleanup(priv); | |
543 | break; | |
7a4e5281 WYG |
544 | default: |
545 | IWL_DEBUG_INFO(priv, "Unknown testmode mem command ID\n"); | |
546 | return -ENOSYS; | |
547 | } | |
548 | return status; | |
549 | ||
550 | nla_put_failure: | |
551 | kfree_skb(skb); | |
552 | if (nla_get_u32(tb[IWL_TM_ATTR_COMMAND]) == | |
553 | IWL_TM_CMD_APP2DEV_BEGIN_TRACE) | |
554 | iwl_trace_cleanup(priv); | |
555 | return -EMSGSIZE; | |
556 | } | |
557 | ||
eb64dca0 WYG |
558 | static int iwl_testmode_trace_dump(struct ieee80211_hw *hw, struct nlattr **tb, |
559 | struct sk_buff *skb, | |
560 | struct netlink_callback *cb) | |
561 | { | |
562 | struct iwl_priv *priv = hw->priv; | |
563 | int idx, length; | |
564 | ||
565 | if (priv->testmode_trace.trace_enabled && | |
566 | priv->testmode_trace.trace_addr) { | |
567 | idx = cb->args[4]; | |
568 | if (idx >= priv->testmode_trace.num_chunks) | |
569 | return -ENOENT; | |
570 | length = TRACE_CHUNK_SIZE; | |
571 | if (((idx + 1) == priv->testmode_trace.num_chunks) && | |
572 | (priv->testmode_trace.buff_size % TRACE_CHUNK_SIZE)) | |
573 | length = priv->testmode_trace.buff_size % | |
574 | TRACE_CHUNK_SIZE; | |
575 | ||
576 | NLA_PUT(skb, IWL_TM_ATTR_TRACE_DUMP, length, | |
577 | priv->testmode_trace.trace_addr + | |
578 | (TRACE_CHUNK_SIZE * idx)); | |
579 | idx++; | |
580 | cb->args[4] = idx; | |
581 | return 0; | |
582 | } else | |
583 | return -EFAULT; | |
584 | ||
585 | nla_put_failure: | |
586 | return -ENOBUFS; | |
587 | } | |
588 | ||
4613e72d CK |
589 | /* The testmode gnl message handler that takes the gnl message from the |
590 | * user space and parses it per the policy iwl_testmode_gnl_msg_policy, then | |
591 | * invoke the corresponding handlers. | |
592 | * | |
593 | * This function is invoked when there is user space application sending | |
594 | * gnl message through the testmode tunnel NL80211_CMD_TESTMODE regulated | |
595 | * by nl80211. | |
596 | * | |
597 | * It retrieves the mandatory field, IWL_TM_ATTR_COMMAND, before | |
598 | * dispatching it to the corresponding handler. | |
599 | * | |
600 | * If IWL_TM_ATTR_COMMAND is missing, -ENOMSG is replied to user application; | |
601 | * -ENOSYS is replied to the user application if the command is unknown; | |
602 | * Otherwise, the command is dispatched to the respective handler. | |
603 | * | |
604 | * @hw: ieee80211_hw object that represents the device | |
605 | * @data: pointer to user space message | |
606 | * @len: length in byte of @data | |
607 | */ | |
608 | int iwl_testmode_cmd(struct ieee80211_hw *hw, void *data, int len) | |
609 | { | |
610 | struct nlattr *tb[IWL_TM_ATTR_MAX - 1]; | |
611 | struct iwl_priv *priv = hw->priv; | |
612 | int result; | |
613 | ||
614 | result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len, | |
615 | iwl_testmode_gnl_msg_policy); | |
616 | if (result != 0) { | |
617 | IWL_DEBUG_INFO(priv, | |
618 | "Error parsing the gnl message : %d\n", result); | |
619 | return result; | |
620 | } | |
621 | ||
622 | /* IWL_TM_ATTR_COMMAND is absolutely mandatory */ | |
623 | if (!tb[IWL_TM_ATTR_COMMAND]) { | |
624 | IWL_DEBUG_INFO(priv, "Error finding testmode command type\n"); | |
625 | return -ENOMSG; | |
626 | } | |
627 | /* in case multiple accesses to the device happens */ | |
628 | mutex_lock(&priv->mutex); | |
629 | ||
630 | switch (nla_get_u32(tb[IWL_TM_ATTR_COMMAND])) { | |
631 | case IWL_TM_CMD_APP2DEV_UCODE: | |
632 | IWL_DEBUG_INFO(priv, "testmode cmd to uCode\n"); | |
633 | result = iwl_testmode_ucode(hw, tb); | |
634 | break; | |
635 | case IWL_TM_CMD_APP2DEV_REG_READ32: | |
636 | case IWL_TM_CMD_APP2DEV_REG_WRITE32: | |
637 | case IWL_TM_CMD_APP2DEV_REG_WRITE8: | |
638 | IWL_DEBUG_INFO(priv, "testmode cmd to register\n"); | |
639 | result = iwl_testmode_reg(hw, tb); | |
640 | break; | |
641 | case IWL_TM_CMD_APP2DEV_GET_DEVICENAME: | |
642 | case IWL_TM_CMD_APP2DEV_LOAD_INIT_FW: | |
643 | case IWL_TM_CMD_APP2DEV_CFG_INIT_CALIB: | |
644 | case IWL_TM_CMD_APP2DEV_LOAD_RUNTIME_FW: | |
4babc358 | 645 | case IWL_TM_CMD_APP2DEV_GET_EEPROM: |
6489854b | 646 | case IWL_TM_CMD_APP2DEV_FIXRATE_REQ: |
4613e72d CK |
647 | IWL_DEBUG_INFO(priv, "testmode cmd to driver\n"); |
648 | result = iwl_testmode_driver(hw, tb); | |
649 | break; | |
7a4e5281 WYG |
650 | |
651 | case IWL_TM_CMD_APP2DEV_BEGIN_TRACE: | |
652 | case IWL_TM_CMD_APP2DEV_END_TRACE: | |
653 | case IWL_TM_CMD_APP2DEV_READ_TRACE: | |
654 | IWL_DEBUG_INFO(priv, "testmode uCode trace cmd to driver\n"); | |
655 | result = iwl_testmode_trace(hw, tb); | |
656 | break; | |
657 | ||
4613e72d CK |
658 | default: |
659 | IWL_DEBUG_INFO(priv, "Unknown testmode command\n"); | |
660 | result = -ENOSYS; | |
661 | break; | |
662 | } | |
663 | ||
664 | mutex_unlock(&priv->mutex); | |
665 | return result; | |
666 | } | |
eb64dca0 WYG |
667 | |
668 | int iwl_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb, | |
669 | struct netlink_callback *cb, | |
670 | void *data, int len) | |
671 | { | |
672 | struct nlattr *tb[IWL_TM_ATTR_MAX]; | |
673 | struct iwl_priv *priv = hw->priv; | |
674 | int result; | |
675 | u32 cmd; | |
676 | ||
677 | if (cb->args[3]) { | |
678 | /* offset by 1 since commands start at 0 */ | |
679 | cmd = cb->args[3] - 1; | |
680 | } else { | |
681 | result = nla_parse(tb, IWL_TM_ATTR_MAX - 1, data, len, | |
682 | iwl_testmode_gnl_msg_policy); | |
683 | if (result) { | |
684 | IWL_DEBUG_INFO(priv, | |
685 | "Error parsing the gnl message : %d\n", result); | |
686 | return result; | |
687 | } | |
688 | ||
689 | /* IWL_TM_ATTR_COMMAND is absolutely mandatory */ | |
690 | if (!tb[IWL_TM_ATTR_COMMAND]) { | |
691 | IWL_DEBUG_INFO(priv, | |
692 | "Error finding testmode command type\n"); | |
693 | return -ENOMSG; | |
694 | } | |
695 | cmd = nla_get_u32(tb[IWL_TM_ATTR_COMMAND]); | |
696 | cb->args[3] = cmd + 1; | |
697 | } | |
698 | ||
699 | /* in case multiple accesses to the device happens */ | |
700 | mutex_lock(&priv->mutex); | |
701 | switch (cmd) { | |
702 | case IWL_TM_CMD_APP2DEV_READ_TRACE: | |
703 | IWL_DEBUG_INFO(priv, "uCode trace cmd to driver\n"); | |
704 | result = iwl_testmode_trace_dump(hw, tb, skb, cb); | |
705 | break; | |
706 | default: | |
707 | result = -EINVAL; | |
708 | break; | |
709 | } | |
710 | ||
711 | mutex_unlock(&priv->mutex); | |
712 | return result; | |
713 | } |