This source file includes following definitions.
- iwl_write8
- iwl_write32
- iwl_write64
- iwl_read32
- iwl_poll_bit
- iwl_read_direct32
- iwl_write_direct32
- iwl_write_direct64
- iwl_poll_direct_bit
- iwl_read_prph_no_grab
- iwl_write_prph_no_grab
- iwl_write_prph64_no_grab
- iwl_read_prph
- iwl_write_prph
- iwl_poll_prph_bit
- iwl_set_bits_prph
- iwl_set_bits_mask_prph
- iwl_clear_bits_prph
- iwl_force_nmi
- get_rfh_string
- iwl_dump_rfh
- get_fh_string
- iwl_dump_fh
- iwl_finish_nic_init
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62 #include <linux/delay.h>
63 #include <linux/device.h>
64 #include <linux/export.h>
65
66 #include "iwl-drv.h"
67 #include "iwl-io.h"
68 #include "iwl-csr.h"
69 #include "iwl-debug.h"
70 #include "iwl-prph.h"
71 #include "iwl-fh.h"
72
73 const struct iwl_csr_params iwl_csr_v1 = {
74 .flag_mac_clock_ready = 0,
75 .flag_val_mac_access_en = 0,
76 .flag_init_done = 2,
77 .flag_mac_access_req = 3,
78 .flag_sw_reset = 7,
79 .flag_master_dis = 8,
80 .flag_stop_master = 9,
81 .addr_sw_reset = CSR_BASE + 0x020,
82 .mac_addr0_otp = 0x380,
83 .mac_addr1_otp = 0x384,
84 .mac_addr0_strap = 0x388,
85 .mac_addr1_strap = 0x38C
86 };
87
88 const struct iwl_csr_params iwl_csr_v2 = {
89 .flag_init_done = 6,
90 .flag_mac_clock_ready = 20,
91 .flag_val_mac_access_en = 20,
92 .flag_mac_access_req = 21,
93 .flag_master_dis = 28,
94 .flag_stop_master = 29,
95 .flag_sw_reset = 31,
96 .addr_sw_reset = CSR_BASE + 0x024,
97 .mac_addr0_otp = 0x30,
98 .mac_addr1_otp = 0x34,
99 .mac_addr0_strap = 0x38,
100 .mac_addr1_strap = 0x3C
101 };
102
103 void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val)
104 {
105 trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val);
106 iwl_trans_write8(trans, ofs, val);
107 }
108 IWL_EXPORT_SYMBOL(iwl_write8);
109
110 void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val)
111 {
112 trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val);
113 iwl_trans_write32(trans, ofs, val);
114 }
115 IWL_EXPORT_SYMBOL(iwl_write32);
116
117 void iwl_write64(struct iwl_trans *trans, u64 ofs, u64 val)
118 {
119 trace_iwlwifi_dev_iowrite64(trans->dev, ofs, val);
120 iwl_trans_write32(trans, ofs, lower_32_bits(val));
121 iwl_trans_write32(trans, ofs + 4, upper_32_bits(val));
122 }
123 IWL_EXPORT_SYMBOL(iwl_write64);
124
125 u32 iwl_read32(struct iwl_trans *trans, u32 ofs)
126 {
127 u32 val = iwl_trans_read32(trans, ofs);
128
129 trace_iwlwifi_dev_ioread32(trans->dev, ofs, val);
130 return val;
131 }
132 IWL_EXPORT_SYMBOL(iwl_read32);
133
134 #define IWL_POLL_INTERVAL 10
135
136 int iwl_poll_bit(struct iwl_trans *trans, u32 addr,
137 u32 bits, u32 mask, int timeout)
138 {
139 int t = 0;
140
141 do {
142 if ((iwl_read32(trans, addr) & mask) == (bits & mask))
143 return t;
144 udelay(IWL_POLL_INTERVAL);
145 t += IWL_POLL_INTERVAL;
146 } while (t < timeout);
147
148 return -ETIMEDOUT;
149 }
150 IWL_EXPORT_SYMBOL(iwl_poll_bit);
151
152 u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg)
153 {
154 u32 value = 0x5a5a5a5a;
155 unsigned long flags;
156 if (iwl_trans_grab_nic_access(trans, &flags)) {
157 value = iwl_read32(trans, reg);
158 iwl_trans_release_nic_access(trans, &flags);
159 }
160
161 return value;
162 }
163 IWL_EXPORT_SYMBOL(iwl_read_direct32);
164
165 void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value)
166 {
167 unsigned long flags;
168
169 if (iwl_trans_grab_nic_access(trans, &flags)) {
170 iwl_write32(trans, reg, value);
171 iwl_trans_release_nic_access(trans, &flags);
172 }
173 }
174 IWL_EXPORT_SYMBOL(iwl_write_direct32);
175
176 void iwl_write_direct64(struct iwl_trans *trans, u64 reg, u64 value)
177 {
178 unsigned long flags;
179
180 if (iwl_trans_grab_nic_access(trans, &flags)) {
181 iwl_write64(trans, reg, value);
182 iwl_trans_release_nic_access(trans, &flags);
183 }
184 }
185 IWL_EXPORT_SYMBOL(iwl_write_direct64);
186
187 int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
188 int timeout)
189 {
190 int t = 0;
191
192 do {
193 if ((iwl_read_direct32(trans, addr) & mask) == mask)
194 return t;
195 udelay(IWL_POLL_INTERVAL);
196 t += IWL_POLL_INTERVAL;
197 } while (t < timeout);
198
199 return -ETIMEDOUT;
200 }
201 IWL_EXPORT_SYMBOL(iwl_poll_direct_bit);
202
203 u32 iwl_read_prph_no_grab(struct iwl_trans *trans, u32 ofs)
204 {
205 u32 val = iwl_trans_read_prph(trans, ofs);
206 trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val);
207 return val;
208 }
209 IWL_EXPORT_SYMBOL(iwl_read_prph_no_grab);
210
211 void iwl_write_prph_no_grab(struct iwl_trans *trans, u32 ofs, u32 val)
212 {
213 trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
214 iwl_trans_write_prph(trans, ofs, val);
215 }
216 IWL_EXPORT_SYMBOL(iwl_write_prph_no_grab);
217
218 void iwl_write_prph64_no_grab(struct iwl_trans *trans, u64 ofs, u64 val)
219 {
220 trace_iwlwifi_dev_iowrite_prph64(trans->dev, ofs, val);
221 iwl_write_prph_no_grab(trans, ofs, val & 0xffffffff);
222 iwl_write_prph_no_grab(trans, ofs + 4, val >> 32);
223 }
224 IWL_EXPORT_SYMBOL(iwl_write_prph64_no_grab);
225
226 u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
227 {
228 unsigned long flags;
229 u32 val = 0x5a5a5a5a;
230
231 if (iwl_trans_grab_nic_access(trans, &flags)) {
232 val = iwl_read_prph_no_grab(trans, ofs);
233 iwl_trans_release_nic_access(trans, &flags);
234 }
235 return val;
236 }
237 IWL_EXPORT_SYMBOL(iwl_read_prph);
238
239 void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
240 {
241 unsigned long flags;
242
243 if (iwl_trans_grab_nic_access(trans, &flags)) {
244 iwl_write_prph_no_grab(trans, ofs, val);
245 iwl_trans_release_nic_access(trans, &flags);
246 }
247 }
248 IWL_EXPORT_SYMBOL(iwl_write_prph);
249
250 int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr,
251 u32 bits, u32 mask, int timeout)
252 {
253 int t = 0;
254
255 do {
256 if ((iwl_read_prph(trans, addr) & mask) == (bits & mask))
257 return t;
258 udelay(IWL_POLL_INTERVAL);
259 t += IWL_POLL_INTERVAL;
260 } while (t < timeout);
261
262 return -ETIMEDOUT;
263 }
264
265 void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
266 {
267 unsigned long flags;
268
269 if (iwl_trans_grab_nic_access(trans, &flags)) {
270 iwl_write_prph_no_grab(trans, ofs,
271 iwl_read_prph_no_grab(trans, ofs) |
272 mask);
273 iwl_trans_release_nic_access(trans, &flags);
274 }
275 }
276 IWL_EXPORT_SYMBOL(iwl_set_bits_prph);
277
278 void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs,
279 u32 bits, u32 mask)
280 {
281 unsigned long flags;
282
283 if (iwl_trans_grab_nic_access(trans, &flags)) {
284 iwl_write_prph_no_grab(trans, ofs,
285 (iwl_read_prph_no_grab(trans, ofs) &
286 mask) | bits);
287 iwl_trans_release_nic_access(trans, &flags);
288 }
289 }
290 IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph);
291
292 void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
293 {
294 unsigned long flags;
295 u32 val;
296
297 if (iwl_trans_grab_nic_access(trans, &flags)) {
298 val = iwl_read_prph_no_grab(trans, ofs);
299 iwl_write_prph_no_grab(trans, ofs, (val & ~mask));
300 iwl_trans_release_nic_access(trans, &flags);
301 }
302 }
303 IWL_EXPORT_SYMBOL(iwl_clear_bits_prph);
304
305 void iwl_force_nmi(struct iwl_trans *trans)
306 {
307 if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
308 iwl_write_prph(trans, DEVICE_SET_NMI_REG,
309 DEVICE_SET_NMI_VAL_DRV);
310 else if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
311 iwl_write_umac_prph(trans, UREG_NIC_SET_NMI_DRIVER,
312 UREG_NIC_SET_NMI_DRIVER_NMI_FROM_DRIVER_MSK);
313 else
314 iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6,
315 UREG_DOORBELL_TO_ISR6_NMI_BIT);
316 }
317 IWL_EXPORT_SYMBOL(iwl_force_nmi);
318
319 static const char *get_rfh_string(int cmd)
320 {
321 #define IWL_CMD(x) case x: return #x
322 #define IWL_CMD_MQ(arg, reg, q) { if (arg == reg(q)) return #reg; }
323
324 int i;
325
326 for (i = 0; i < IWL_MAX_RX_HW_QUEUES; i++) {
327 IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_BA_LSB, i);
328 IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_WIDX, i);
329 IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_RIDX, i);
330 IWL_CMD_MQ(cmd, RFH_Q_URBD_STTS_WPTR_LSB, i);
331 }
332
333 switch (cmd) {
334 IWL_CMD(RFH_RXF_DMA_CFG);
335 IWL_CMD(RFH_GEN_CFG);
336 IWL_CMD(RFH_GEN_STATUS);
337 IWL_CMD(FH_TSSR_TX_STATUS_REG);
338 IWL_CMD(FH_TSSR_TX_ERROR_REG);
339 default:
340 return "UNKNOWN";
341 }
342 #undef IWL_CMD_MQ
343 }
344
345 struct reg {
346 u32 addr;
347 bool is64;
348 };
349
350 static int iwl_dump_rfh(struct iwl_trans *trans, char **buf)
351 {
352 int i, q;
353 int num_q = trans->num_rx_queues;
354 static const u32 rfh_tbl[] = {
355 RFH_RXF_DMA_CFG,
356 RFH_GEN_CFG,
357 RFH_GEN_STATUS,
358 FH_TSSR_TX_STATUS_REG,
359 FH_TSSR_TX_ERROR_REG,
360 };
361 static const struct reg rfh_mq_tbl[] = {
362 { RFH_Q0_FRBDCB_BA_LSB, true },
363 { RFH_Q0_FRBDCB_WIDX, false },
364 { RFH_Q0_FRBDCB_RIDX, false },
365 { RFH_Q0_URBD_STTS_WPTR_LSB, true },
366 };
367
368 #ifdef CONFIG_IWLWIFI_DEBUGFS
369 if (buf) {
370 int pos = 0;
371
372
373
374
375
376
377
378 size_t bufsz = ARRAY_SIZE(rfh_tbl) * 53 +
379 ARRAY_SIZE(rfh_mq_tbl) * 53 * num_q + 40;
380
381 *buf = kmalloc(bufsz, GFP_KERNEL);
382 if (!*buf)
383 return -ENOMEM;
384
385 pos += scnprintf(*buf + pos, bufsz - pos,
386 "RFH register values:\n");
387
388 for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
389 pos += scnprintf(*buf + pos, bufsz - pos,
390 "%40s: 0X%08x\n",
391 get_rfh_string(rfh_tbl[i]),
392 iwl_read_prph(trans, rfh_tbl[i]));
393
394 for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
395 for (q = 0; q < num_q; q++) {
396 u32 addr = rfh_mq_tbl[i].addr;
397
398 addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
399 pos += scnprintf(*buf + pos, bufsz - pos,
400 "%34s(q %2d): 0X%08x\n",
401 get_rfh_string(addr), q,
402 iwl_read_prph(trans, addr));
403 }
404
405 return pos;
406 }
407 #endif
408
409 IWL_ERR(trans, "RFH register values:\n");
410 for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
411 IWL_ERR(trans, " %34s: 0X%08x\n",
412 get_rfh_string(rfh_tbl[i]),
413 iwl_read_prph(trans, rfh_tbl[i]));
414
415 for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
416 for (q = 0; q < num_q; q++) {
417 u32 addr = rfh_mq_tbl[i].addr;
418
419 addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
420 IWL_ERR(trans, " %34s(q %d): 0X%08x\n",
421 get_rfh_string(addr), q,
422 iwl_read_prph(trans, addr));
423 }
424
425 return 0;
426 }
427
428 static const char *get_fh_string(int cmd)
429 {
430 switch (cmd) {
431 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
432 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
433 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
434 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
435 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
436 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
437 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
438 IWL_CMD(FH_TSSR_TX_STATUS_REG);
439 IWL_CMD(FH_TSSR_TX_ERROR_REG);
440 default:
441 return "UNKNOWN";
442 }
443 #undef IWL_CMD
444 }
445
446 int iwl_dump_fh(struct iwl_trans *trans, char **buf)
447 {
448 int i;
449 static const u32 fh_tbl[] = {
450 FH_RSCSR_CHNL0_STTS_WPTR_REG,
451 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
452 FH_RSCSR_CHNL0_WPTR,
453 FH_MEM_RCSR_CHNL0_CONFIG_REG,
454 FH_MEM_RSSR_SHARED_CTRL_REG,
455 FH_MEM_RSSR_RX_STATUS_REG,
456 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
457 FH_TSSR_TX_STATUS_REG,
458 FH_TSSR_TX_ERROR_REG
459 };
460
461 if (trans->trans_cfg->mq_rx_supported)
462 return iwl_dump_rfh(trans, buf);
463
464 #ifdef CONFIG_IWLWIFI_DEBUGFS
465 if (buf) {
466 int pos = 0;
467 size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
468
469 *buf = kmalloc(bufsz, GFP_KERNEL);
470 if (!*buf)
471 return -ENOMEM;
472
473 pos += scnprintf(*buf + pos, bufsz - pos,
474 "FH register values:\n");
475
476 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
477 pos += scnprintf(*buf + pos, bufsz - pos,
478 " %34s: 0X%08x\n",
479 get_fh_string(fh_tbl[i]),
480 iwl_read_direct32(trans, fh_tbl[i]));
481
482 return pos;
483 }
484 #endif
485
486 IWL_ERR(trans, "FH register values:\n");
487 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
488 IWL_ERR(trans, " %34s: 0X%08x\n",
489 get_fh_string(fh_tbl[i]),
490 iwl_read_direct32(trans, fh_tbl[i]));
491
492 return 0;
493 }
494
495 int iwl_finish_nic_init(struct iwl_trans *trans,
496 const struct iwl_cfg_trans_params *cfg_trans)
497 {
498 int err;
499
500 if (cfg_trans->bisr_workaround) {
501
502 mdelay(2);
503 }
504
505
506
507
508
509 iwl_set_bit(trans, CSR_GP_CNTRL,
510 BIT(cfg_trans->csr->flag_init_done));
511
512 if (cfg_trans->device_family == IWL_DEVICE_FAMILY_8000)
513 udelay(2);
514
515
516
517
518
519
520 err = iwl_poll_bit(trans, CSR_GP_CNTRL,
521 BIT(cfg_trans->csr->flag_mac_clock_ready),
522 BIT(cfg_trans->csr->flag_mac_clock_ready),
523 25000);
524 if (err < 0)
525 IWL_DEBUG_INFO(trans, "Failed to wake NIC\n");
526
527 if (cfg_trans->bisr_workaround) {
528
529 udelay(200);
530 }
531
532 return err < 0 ? err : 0;
533 }
534 IWL_EXPORT_SYMBOL(iwl_finish_nic_init);