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) 2012 - 2013 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 COPYING.
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) 2012 - 2013 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 <net/mac80211.h>
64
65 #include "iwl-debug.h"
66 #include "iwl-io.h"
67
68 #include "mvm.h"
69 #include "fw-api-rs.h"
70
71 /*
72 * Will return 0 even if the cmd failed when RFKILL is asserted unless
73 * CMD_WANT_SKB is set in cmd->flags.
74 */
iwl_mvm_send_cmd(struct iwl_mvm * mvm,struct iwl_host_cmd * cmd)75 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
76 {
77 int ret;
78
79 /*
80 * Synchronous commands from this op-mode must hold
81 * the mutex, this ensures we don't try to send two
82 * (or more) synchronous commands at a time.
83 */
84 if (!(cmd->flags & CMD_ASYNC))
85 lockdep_assert_held(&mvm->mutex);
86
87 ret = iwl_trans_send_cmd(mvm->trans, cmd);
88
89 /*
90 * If the caller wants the SKB, then don't hide any problems, the
91 * caller might access the response buffer which will be NULL if
92 * the command failed.
93 */
94 if (cmd->flags & CMD_WANT_SKB)
95 return ret;
96
97 /* Silently ignore failures if RFKILL is asserted */
98 if (!ret || ret == -ERFKILL)
99 return 0;
100 return ret;
101 }
102
iwl_mvm_send_cmd_pdu(struct iwl_mvm * mvm,u8 id,u32 flags,u16 len,const void * data)103 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id,
104 u32 flags, u16 len, const void *data)
105 {
106 struct iwl_host_cmd cmd = {
107 .id = id,
108 .len = { len, },
109 .data = { data, },
110 .flags = flags,
111 };
112
113 return iwl_mvm_send_cmd(mvm, &cmd);
114 }
115
116 /*
117 * We assume that the caller set the status to the sucess value
118 */
iwl_mvm_send_cmd_status(struct iwl_mvm * mvm,struct iwl_host_cmd * cmd,u32 * status)119 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
120 u32 *status)
121 {
122 struct iwl_rx_packet *pkt;
123 struct iwl_cmd_response *resp;
124 int ret, resp_len;
125
126 lockdep_assert_held(&mvm->mutex);
127
128 /*
129 * Only synchronous commands can wait for status,
130 * we use WANT_SKB so the caller can't.
131 */
132 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
133 "cmd flags %x", cmd->flags))
134 return -EINVAL;
135
136 cmd->flags |= CMD_SYNC | CMD_WANT_SKB;
137
138 ret = iwl_trans_send_cmd(mvm->trans, cmd);
139 if (ret == -ERFKILL) {
140 /*
141 * The command failed because of RFKILL, don't update
142 * the status, leave it as success and return 0.
143 */
144 return 0;
145 } else if (ret) {
146 return ret;
147 }
148
149 pkt = cmd->resp_pkt;
150 /* Can happen if RFKILL is asserted */
151 if (!pkt) {
152 ret = 0;
153 goto out_free_resp;
154 }
155
156 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
157 ret = -EIO;
158 goto out_free_resp;
159 }
160
161 resp_len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
162 if (WARN_ON_ONCE(resp_len != sizeof(pkt->hdr) + sizeof(*resp))) {
163 ret = -EIO;
164 goto out_free_resp;
165 }
166
167 resp = (void *)pkt->data;
168 *status = le32_to_cpu(resp->status);
169 out_free_resp:
170 iwl_free_resp(cmd);
171 return ret;
172 }
173
174 /*
175 * We assume that the caller set the status to the sucess value
176 */
iwl_mvm_send_cmd_pdu_status(struct iwl_mvm * mvm,u8 id,u16 len,const void * data,u32 * status)177 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u8 id, u16 len,
178 const void *data, u32 *status)
179 {
180 struct iwl_host_cmd cmd = {
181 .id = id,
182 .len = { len, },
183 .data = { data, },
184 };
185
186 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
187 }
188
189 #define IWL_DECLARE_RATE_INFO(r) \
190 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
191
192 /*
193 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
194 */
195 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
196 IWL_DECLARE_RATE_INFO(1),
197 IWL_DECLARE_RATE_INFO(2),
198 IWL_DECLARE_RATE_INFO(5),
199 IWL_DECLARE_RATE_INFO(11),
200 IWL_DECLARE_RATE_INFO(6),
201 IWL_DECLARE_RATE_INFO(9),
202 IWL_DECLARE_RATE_INFO(12),
203 IWL_DECLARE_RATE_INFO(18),
204 IWL_DECLARE_RATE_INFO(24),
205 IWL_DECLARE_RATE_INFO(36),
206 IWL_DECLARE_RATE_INFO(48),
207 IWL_DECLARE_RATE_INFO(54),
208 };
209
iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,enum ieee80211_band band)210 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
211 enum ieee80211_band band)
212 {
213 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
214 int idx;
215 int band_offset = 0;
216
217 /* Legacy rate format, search for match in table */
218 if (band == IEEE80211_BAND_5GHZ)
219 band_offset = IWL_FIRST_OFDM_RATE;
220 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
221 if (fw_rate_idx_to_plcp[idx] == rate)
222 return idx - band_offset;
223
224 return -1;
225 }
226
iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)227 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
228 {
229 /* Get PLCP rate for tx_cmd->rate_n_flags */
230 return fw_rate_idx_to_plcp[rate_idx];
231 }
232
iwl_mvm_rx_fw_error(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb,struct iwl_device_cmd * cmd)233 int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
234 struct iwl_device_cmd *cmd)
235 {
236 struct iwl_rx_packet *pkt = rxb_addr(rxb);
237 struct iwl_error_resp *err_resp = (void *)pkt->data;
238
239 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
240 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
241 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
242 le16_to_cpu(err_resp->bad_cmd_seq_num),
243 le32_to_cpu(err_resp->error_service));
244 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
245 le64_to_cpu(err_resp->timestamp));
246 return 0;
247 }
248
249 /*
250 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
251 * The parameter should also be a combination of ANT_[ABC].
252 */
first_antenna(u8 mask)253 u8 first_antenna(u8 mask)
254 {
255 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
256 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
257 return BIT(0);
258 return BIT(ffs(mask) - 1);
259 }
260
261 /*
262 * Toggles between TX antennas to send the probe request on.
263 * Receives the bitmask of valid TX antennas and the *index* used
264 * for the last TX, and returns the next valid *index* to use.
265 * In order to set it in the tx_cmd, must do BIT(idx).
266 */
iwl_mvm_next_antenna(struct iwl_mvm * mvm,u8 valid,u8 last_idx)267 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
268 {
269 u8 ind = last_idx;
270 int i;
271
272 for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
273 ind = (ind + 1) % RATE_MCS_ANT_NUM;
274 if (valid & BIT(ind))
275 return ind;
276 }
277
278 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
279 return last_idx;
280 }
281
282 static struct {
283 char *name;
284 u8 num;
285 } advanced_lookup[] = {
286 { "NMI_INTERRUPT_WDG", 0x34 },
287 { "SYSASSERT", 0x35 },
288 { "UCODE_VERSION_MISMATCH", 0x37 },
289 { "BAD_COMMAND", 0x38 },
290 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
291 { "FATAL_ERROR", 0x3D },
292 { "NMI_TRM_HW_ERR", 0x46 },
293 { "NMI_INTERRUPT_TRM", 0x4C },
294 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
295 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
296 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
297 { "NMI_INTERRUPT_HOST", 0x66 },
298 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
299 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
300 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
301 { "ADVANCED_SYSASSERT", 0 },
302 };
303
desc_lookup(u32 num)304 static const char *desc_lookup(u32 num)
305 {
306 int i;
307
308 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
309 if (advanced_lookup[i].num == num)
310 return advanced_lookup[i].name;
311
312 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
313 return advanced_lookup[i].name;
314 }
315
316 /*
317 * Note: This structure is read from the device with IO accesses,
318 * and the reading already does the endian conversion. As it is
319 * read with u32-sized accesses, any members with a different size
320 * need to be ordered correctly though!
321 */
322 struct iwl_error_event_table {
323 u32 valid; /* (nonzero) valid, (0) log is empty */
324 u32 error_id; /* type of error */
325 u32 pc; /* program counter */
326 u32 blink1; /* branch link */
327 u32 blink2; /* branch link */
328 u32 ilink1; /* interrupt link */
329 u32 ilink2; /* interrupt link */
330 u32 data1; /* error-specific data */
331 u32 data2; /* error-specific data */
332 u32 data3; /* error-specific data */
333 u32 bcon_time; /* beacon timer */
334 u32 tsf_low; /* network timestamp function timer */
335 u32 tsf_hi; /* network timestamp function timer */
336 u32 gp1; /* GP1 timer register */
337 u32 gp2; /* GP2 timer register */
338 u32 gp3; /* GP3 timer register */
339 u32 ucode_ver; /* uCode version */
340 u32 hw_ver; /* HW Silicon version */
341 u32 brd_ver; /* HW board version */
342 u32 log_pc; /* log program counter */
343 u32 frame_ptr; /* frame pointer */
344 u32 stack_ptr; /* stack pointer */
345 u32 hcmd; /* last host command header */
346 u32 isr0; /* isr status register LMPM_NIC_ISR0:
347 * rxtx_flag */
348 u32 isr1; /* isr status register LMPM_NIC_ISR1:
349 * host_flag */
350 u32 isr2; /* isr status register LMPM_NIC_ISR2:
351 * enc_flag */
352 u32 isr3; /* isr status register LMPM_NIC_ISR3:
353 * time_flag */
354 u32 isr4; /* isr status register LMPM_NIC_ISR4:
355 * wico interrupt */
356 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
357 u32 wait_event; /* wait event() caller address */
358 u32 l2p_control; /* L2pControlField */
359 u32 l2p_duration; /* L2pDurationField */
360 u32 l2p_mhvalid; /* L2pMhValidBits */
361 u32 l2p_addr_match; /* L2pAddrMatchStat */
362 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
363 * (LMPM_PMG_SEL) */
364 u32 u_timestamp; /* indicate when the date and time of the
365 * compilation */
366 u32 flow_handler; /* FH read/write pointers, RX credit */
367 } __packed;
368
369 #define ERROR_START_OFFSET (1 * sizeof(u32))
370 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
371
iwl_mvm_dump_nic_error_log(struct iwl_mvm * mvm)372 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
373 {
374 struct iwl_trans *trans = mvm->trans;
375 struct iwl_error_event_table table;
376 u32 base;
377
378 base = mvm->error_event_table;
379 if (mvm->cur_ucode == IWL_UCODE_INIT) {
380 if (!base)
381 base = mvm->fw->init_errlog_ptr;
382 } else {
383 if (!base)
384 base = mvm->fw->inst_errlog_ptr;
385 }
386
387 if (base < 0x800000 || base >= 0x80C000) {
388 IWL_ERR(mvm,
389 "Not valid error log pointer 0x%08X for %s uCode\n",
390 base,
391 (mvm->cur_ucode == IWL_UCODE_INIT)
392 ? "Init" : "RT");
393 return;
394 }
395
396 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
397
398 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
399 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
400 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
401 mvm->status, table.valid);
402 }
403
404 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
405 table.data1, table.data2, table.data3,
406 table.blink1, table.blink2, table.ilink1,
407 table.ilink2, table.bcon_time, table.gp1,
408 table.gp2, table.gp3, table.ucode_ver,
409 table.hw_ver, table.brd_ver);
410 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
411 desc_lookup(table.error_id));
412 IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
413 IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
414 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
415 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
416 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
417 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
418 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
419 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
420 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
421 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
422 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
423 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
424 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
425 IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
426 IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver);
427 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
428 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
429 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
430 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
431 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
432 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
433 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
434 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
435 IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
436 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
437 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
438 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
439 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
440 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
441 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
442 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
443 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
444 }
445
446 /**
447 * iwl_mvm_send_lq_cmd() - Send link quality command
448 * @init: This command is sent as part of station initialization right
449 * after station has been added.
450 *
451 * The link quality command is sent as the last step of station creation.
452 * This is the special case in which init is set and we call a callback in
453 * this case to clear the state indicating that station creation is in
454 * progress.
455 */
iwl_mvm_send_lq_cmd(struct iwl_mvm * mvm,struct iwl_lq_cmd * lq,u8 flags,bool init)456 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq,
457 u8 flags, bool init)
458 {
459 struct iwl_host_cmd cmd = {
460 .id = LQ_CMD,
461 .len = { sizeof(struct iwl_lq_cmd), },
462 .flags = flags,
463 .data = { lq, },
464 };
465
466 if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
467 return -EINVAL;
468
469 if (WARN_ON(init && (cmd.flags & CMD_ASYNC)))
470 return -EINVAL;
471
472 return iwl_mvm_send_cmd(mvm, &cmd);
473 }
474