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29#include <linux/delay.h>
30#include <linux/device.h>
31#include <linux/export.h>
32
33#include "iwl-drv.h"
34#include "iwl-io.h"
35#include "iwl-csr.h"
36#include "iwl-debug.h"
37#include "iwl-prph.h"
38#include "iwl-fh.h"
39
40void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val)
41{
42 trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val);
43 iwl_trans_write8(trans, ofs, val);
44}
45IWL_EXPORT_SYMBOL(iwl_write8);
46
47void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val)
48{
49 trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val);
50 iwl_trans_write32(trans, ofs, val);
51}
52IWL_EXPORT_SYMBOL(iwl_write32);
53
54void iwl_write64(struct iwl_trans *trans, u64 ofs, u64 val)
55{
56 trace_iwlwifi_dev_iowrite64(trans->dev, ofs, val);
57 iwl_trans_write32(trans, ofs, val & 0xffffffff);
58 iwl_trans_write32(trans, ofs + 4, val >> 32);
59}
60IWL_EXPORT_SYMBOL(iwl_write64);
61
62u32 iwl_read32(struct iwl_trans *trans, u32 ofs)
63{
64 u32 val = iwl_trans_read32(trans, ofs);
65
66 trace_iwlwifi_dev_ioread32(trans->dev, ofs, val);
67 return val;
68}
69IWL_EXPORT_SYMBOL(iwl_read32);
70
71#define IWL_POLL_INTERVAL 10
72
73int iwl_poll_bit(struct iwl_trans *trans, u32 addr,
74 u32 bits, u32 mask, int timeout)
75{
76 int t = 0;
77
78 do {
79 if ((iwl_read32(trans, addr) & mask) == (bits & mask))
80 return t;
81 udelay(IWL_POLL_INTERVAL);
82 t += IWL_POLL_INTERVAL;
83 } while (t < timeout);
84
85 return -ETIMEDOUT;
86}
87IWL_EXPORT_SYMBOL(iwl_poll_bit);
88
89u32 iwl_read_direct32(struct iwl_trans *trans, u32 reg)
90{
91 u32 value = 0x5a5a5a5a;
92 unsigned long flags;
93 if (iwl_trans_grab_nic_access(trans, &flags)) {
94 value = iwl_read32(trans, reg);
95 iwl_trans_release_nic_access(trans, &flags);
96 }
97
98 return value;
99}
100IWL_EXPORT_SYMBOL(iwl_read_direct32);
101
102void iwl_write_direct32(struct iwl_trans *trans, u32 reg, u32 value)
103{
104 unsigned long flags;
105
106 if (iwl_trans_grab_nic_access(trans, &flags)) {
107 iwl_write32(trans, reg, value);
108 iwl_trans_release_nic_access(trans, &flags);
109 }
110}
111IWL_EXPORT_SYMBOL(iwl_write_direct32);
112
113void iwl_write_direct64(struct iwl_trans *trans, u64 reg, u64 value)
114{
115 unsigned long flags;
116
117 if (iwl_trans_grab_nic_access(trans, &flags)) {
118 iwl_write64(trans, reg, value);
119 iwl_trans_release_nic_access(trans, &flags);
120 }
121}
122IWL_EXPORT_SYMBOL(iwl_write_direct64);
123
124int iwl_poll_direct_bit(struct iwl_trans *trans, u32 addr, u32 mask,
125 int timeout)
126{
127 int t = 0;
128
129 do {
130 if ((iwl_read_direct32(trans, addr) & mask) == mask)
131 return t;
132 udelay(IWL_POLL_INTERVAL);
133 t += IWL_POLL_INTERVAL;
134 } while (t < timeout);
135
136 return -ETIMEDOUT;
137}
138IWL_EXPORT_SYMBOL(iwl_poll_direct_bit);
139
140u32 iwl_read_prph_no_grab(struct iwl_trans *trans, u32 ofs)
141{
142 u32 val = iwl_trans_read_prph(trans, ofs);
143 trace_iwlwifi_dev_ioread_prph32(trans->dev, ofs, val);
144 return val;
145}
146IWL_EXPORT_SYMBOL(iwl_read_prph_no_grab);
147
148void iwl_write_prph_no_grab(struct iwl_trans *trans, u32 ofs, u32 val)
149{
150 trace_iwlwifi_dev_iowrite_prph32(trans->dev, ofs, val);
151 iwl_trans_write_prph(trans, ofs, val);
152}
153IWL_EXPORT_SYMBOL(iwl_write_prph_no_grab);
154
155void iwl_write_prph64_no_grab(struct iwl_trans *trans, u64 ofs, u64 val)
156{
157 trace_iwlwifi_dev_iowrite_prph64(trans->dev, ofs, val);
158 iwl_write_prph_no_grab(trans, ofs, val & 0xffffffff);
159 iwl_write_prph_no_grab(trans, ofs + 4, val >> 32);
160}
161IWL_EXPORT_SYMBOL(iwl_write_prph64_no_grab);
162
163u32 iwl_read_prph(struct iwl_trans *trans, u32 ofs)
164{
165 unsigned long flags;
166 u32 val = 0x5a5a5a5a;
167
168 if (iwl_trans_grab_nic_access(trans, &flags)) {
169 val = iwl_read_prph_no_grab(trans, ofs);
170 iwl_trans_release_nic_access(trans, &flags);
171 }
172 return val;
173}
174IWL_EXPORT_SYMBOL(iwl_read_prph);
175
176void iwl_write_prph(struct iwl_trans *trans, u32 ofs, u32 val)
177{
178 unsigned long flags;
179
180 if (iwl_trans_grab_nic_access(trans, &flags)) {
181 iwl_write_prph_no_grab(trans, ofs, val);
182 iwl_trans_release_nic_access(trans, &flags);
183 }
184}
185IWL_EXPORT_SYMBOL(iwl_write_prph);
186
187int iwl_poll_prph_bit(struct iwl_trans *trans, u32 addr,
188 u32 bits, u32 mask, int timeout)
189{
190 int t = 0;
191
192 do {
193 if ((iwl_read_prph(trans, addr) & mask) == (bits & mask))
194 return t;
195 udelay(IWL_POLL_INTERVAL);
196 t += IWL_POLL_INTERVAL;
197 } while (t < timeout);
198
199 return -ETIMEDOUT;
200}
201
202void iwl_set_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
203{
204 unsigned long flags;
205
206 if (iwl_trans_grab_nic_access(trans, &flags)) {
207 iwl_write_prph_no_grab(trans, ofs,
208 iwl_read_prph_no_grab(trans, ofs) |
209 mask);
210 iwl_trans_release_nic_access(trans, &flags);
211 }
212}
213IWL_EXPORT_SYMBOL(iwl_set_bits_prph);
214
215void iwl_set_bits_mask_prph(struct iwl_trans *trans, u32 ofs,
216 u32 bits, u32 mask)
217{
218 unsigned long flags;
219
220 if (iwl_trans_grab_nic_access(trans, &flags)) {
221 iwl_write_prph_no_grab(trans, ofs,
222 (iwl_read_prph_no_grab(trans, ofs) &
223 mask) | bits);
224 iwl_trans_release_nic_access(trans, &flags);
225 }
226}
227IWL_EXPORT_SYMBOL(iwl_set_bits_mask_prph);
228
229void iwl_clear_bits_prph(struct iwl_trans *trans, u32 ofs, u32 mask)
230{
231 unsigned long flags;
232 u32 val;
233
234 if (iwl_trans_grab_nic_access(trans, &flags)) {
235 val = iwl_read_prph_no_grab(trans, ofs);
236 iwl_write_prph_no_grab(trans, ofs, (val & ~mask));
237 iwl_trans_release_nic_access(trans, &flags);
238 }
239}
240IWL_EXPORT_SYMBOL(iwl_clear_bits_prph);
241
242void iwl_force_nmi(struct iwl_trans *trans)
243{
244 if (trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) {
245 iwl_write_prph(trans, DEVICE_SET_NMI_REG,
246 DEVICE_SET_NMI_VAL_DRV);
247 iwl_write_prph(trans, DEVICE_SET_NMI_REG,
248 DEVICE_SET_NMI_VAL_HW);
249 } else {
250 iwl_write_prph(trans, DEVICE_SET_NMI_8000_REG,
251 DEVICE_SET_NMI_8000_VAL);
252 iwl_write_prph(trans, DEVICE_SET_NMI_REG,
253 DEVICE_SET_NMI_VAL_DRV);
254 }
255}
256IWL_EXPORT_SYMBOL(iwl_force_nmi);
257
258static const char *get_rfh_string(int cmd)
259{
260#define IWL_CMD(x) case x: return #x
261#define IWL_CMD_MQ(arg, reg, q) { if (arg == reg(q)) return #reg; }
262
263 int i;
264
265 for (i = 0; i < IWL_MAX_RX_HW_QUEUES; i++) {
266 IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_BA_LSB, i);
267 IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_WIDX, i);
268 IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_RIDX, i);
269 IWL_CMD_MQ(cmd, RFH_Q_URBD_STTS_WPTR_LSB, i);
270 }
271
272 switch (cmd) {
273 IWL_CMD(RFH_RXF_DMA_CFG);
274 IWL_CMD(RFH_GEN_CFG);
275 IWL_CMD(RFH_GEN_STATUS);
276 IWL_CMD(FH_TSSR_TX_STATUS_REG);
277 IWL_CMD(FH_TSSR_TX_ERROR_REG);
278 default:
279 return "UNKNOWN";
280 }
281#undef IWL_CMD_MQ
282}
283
284struct reg {
285 u32 addr;
286 bool is64;
287};
288
289static int iwl_dump_rfh(struct iwl_trans *trans, char **buf)
290{
291 int i, q;
292 int num_q = trans->num_rx_queues;
293 static const u32 rfh_tbl[] = {
294 RFH_RXF_DMA_CFG,
295 RFH_GEN_CFG,
296 RFH_GEN_STATUS,
297 FH_TSSR_TX_STATUS_REG,
298 FH_TSSR_TX_ERROR_REG,
299 };
300 static const struct reg rfh_mq_tbl[] = {
301 { RFH_Q0_FRBDCB_BA_LSB, true },
302 { RFH_Q0_FRBDCB_WIDX, false },
303 { RFH_Q0_FRBDCB_RIDX, false },
304 { RFH_Q0_URBD_STTS_WPTR_LSB, true },
305 };
306
307#ifdef CONFIG_IWLWIFI_DEBUGFS
308 if (buf) {
309 int pos = 0;
310
311
312
313
314
315
316
317 size_t bufsz = ARRAY_SIZE(rfh_tbl) * 53 +
318 ARRAY_SIZE(rfh_mq_tbl) * 53 * num_q + 40;
319
320 *buf = kmalloc(bufsz, GFP_KERNEL);
321 if (!*buf)
322 return -ENOMEM;
323
324 pos += scnprintf(*buf + pos, bufsz - pos,
325 "RFH register values:\n");
326
327 for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
328 pos += scnprintf(*buf + pos, bufsz - pos,
329 "%40s: 0X%08x\n",
330 get_rfh_string(rfh_tbl[i]),
331 iwl_read_prph(trans, rfh_tbl[i]));
332
333 for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
334 for (q = 0; q < num_q; q++) {
335 u32 addr = rfh_mq_tbl[i].addr;
336
337 addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
338 pos += scnprintf(*buf + pos, bufsz - pos,
339 "%34s(q %2d): 0X%08x\n",
340 get_rfh_string(addr), q,
341 iwl_read_prph(trans, addr));
342 }
343
344 return pos;
345 }
346#endif
347
348 IWL_ERR(trans, "RFH register values:\n");
349 for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)
350 IWL_ERR(trans, " %34s: 0X%08x\n",
351 get_rfh_string(rfh_tbl[i]),
352 iwl_read_prph(trans, rfh_tbl[i]));
353
354 for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)
355 for (q = 0; q < num_q; q++) {
356 u32 addr = rfh_mq_tbl[i].addr;
357
358 addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);
359 IWL_ERR(trans, " %34s(q %d): 0X%08x\n",
360 get_rfh_string(addr), q,
361 iwl_read_prph(trans, addr));
362 }
363
364 return 0;
365}
366
367static const char *get_fh_string(int cmd)
368{
369 switch (cmd) {
370 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
371 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
372 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
373 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
374 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
375 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
376 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
377 IWL_CMD(FH_TSSR_TX_STATUS_REG);
378 IWL_CMD(FH_TSSR_TX_ERROR_REG);
379 default:
380 return "UNKNOWN";
381 }
382#undef IWL_CMD
383}
384
385int iwl_dump_fh(struct iwl_trans *trans, char **buf)
386{
387 int i;
388 static const u32 fh_tbl[] = {
389 FH_RSCSR_CHNL0_STTS_WPTR_REG,
390 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
391 FH_RSCSR_CHNL0_WPTR,
392 FH_MEM_RCSR_CHNL0_CONFIG_REG,
393 FH_MEM_RSSR_SHARED_CTRL_REG,
394 FH_MEM_RSSR_RX_STATUS_REG,
395 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
396 FH_TSSR_TX_STATUS_REG,
397 FH_TSSR_TX_ERROR_REG
398 };
399
400 if (trans->cfg->mq_rx_supported)
401 return iwl_dump_rfh(trans, buf);
402
403#ifdef CONFIG_IWLWIFI_DEBUGFS
404 if (buf) {
405 int pos = 0;
406 size_t bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
407
408 *buf = kmalloc(bufsz, GFP_KERNEL);
409 if (!*buf)
410 return -ENOMEM;
411
412 pos += scnprintf(*buf + pos, bufsz - pos,
413 "FH register values:\n");
414
415 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
416 pos += scnprintf(*buf + pos, bufsz - pos,
417 " %34s: 0X%08x\n",
418 get_fh_string(fh_tbl[i]),
419 iwl_read_direct32(trans, fh_tbl[i]));
420
421 return pos;
422 }
423#endif
424
425 IWL_ERR(trans, "FH register values:\n");
426 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++)
427 IWL_ERR(trans, " %34s: 0X%08x\n",
428 get_fh_string(fh_tbl[i]),
429 iwl_read_direct32(trans, fh_tbl[i]));
430
431 return 0;
432}
433
