1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 // Copyright (c) 2017 Synopsys, Inc. and/or its affiliates.
3 // stmmac Support for 5.xx Ethernet QoS cores
4
5 #include <linux/bitops.h>
6 #include <linux/iopoll.h>
7 #include "common.h"
8 #include "dwmac4.h"
9 #include "dwmac5.h"
10 #include "stmmac.h"
11 #include "stmmac_ptp.h"
12
13 struct dwmac5_error_desc {
14 bool valid;
15 const char *desc;
16 const char *detailed_desc;
17 };
18
19 #define STAT_OFF(field) offsetof(struct stmmac_safety_stats, field)
20
dwmac5_log_error(struct net_device * ndev,u32 value,bool corr,const char * module_name,const struct dwmac5_error_desc * desc,unsigned long field_offset,struct stmmac_safety_stats * stats)21 static void dwmac5_log_error(struct net_device *ndev, u32 value, bool corr,
22 const char *module_name, const struct dwmac5_error_desc *desc,
23 unsigned long field_offset, struct stmmac_safety_stats *stats)
24 {
25 unsigned long loc, mask;
26 u8 *bptr = (u8 *)stats;
27 unsigned long *ptr;
28
29 ptr = (unsigned long *)(bptr + field_offset);
30
31 mask = value;
32 for_each_set_bit(loc, &mask, 32) {
33 netdev_err(ndev, "Found %s error in %s: '%s: %s'\n", corr ?
34 "correctable" : "uncorrectable", module_name,
35 desc[loc].desc, desc[loc].detailed_desc);
36
37 /* Update counters */
38 ptr[loc]++;
39 }
40 }
41
42 static const struct dwmac5_error_desc dwmac5_mac_errors[32]= {
43 { true, "ATPES", "Application Transmit Interface Parity Check Error" },
44 { true, "TPES", "TSO Data Path Parity Check Error" },
45 { true, "RDPES", "Read Descriptor Parity Check Error" },
46 { true, "MPES", "MTL Data Path Parity Check Error" },
47 { true, "MTSPES", "MTL TX Status Data Path Parity Check Error" },
48 { true, "ARPES", "Application Receive Interface Data Path Parity Check Error" },
49 { true, "CWPES", "CSR Write Data Path Parity Check Error" },
50 { true, "ASRPES", "AXI Slave Read Data Path Parity Check Error" },
51 { true, "TTES", "TX FSM Timeout Error" },
52 { true, "RTES", "RX FSM Timeout Error" },
53 { true, "CTES", "CSR FSM Timeout Error" },
54 { true, "ATES", "APP FSM Timeout Error" },
55 { true, "PTES", "PTP FSM Timeout Error" },
56 { true, "T125ES", "TX125 FSM Timeout Error" },
57 { true, "R125ES", "RX125 FSM Timeout Error" },
58 { true, "RVCTES", "REV MDC FSM Timeout Error" },
59 { true, "MSTTES", "Master Read/Write Timeout Error" },
60 { true, "SLVTES", "Slave Read/Write Timeout Error" },
61 { true, "ATITES", "Application Timeout on ATI Interface Error" },
62 { true, "ARITES", "Application Timeout on ARI Interface Error" },
63 { false, "UNKNOWN", "Unknown Error" }, /* 20 */
64 { false, "UNKNOWN", "Unknown Error" }, /* 21 */
65 { false, "UNKNOWN", "Unknown Error" }, /* 22 */
66 { false, "UNKNOWN", "Unknown Error" }, /* 23 */
67 { true, "FSMPES", "FSM State Parity Error" },
68 { false, "UNKNOWN", "Unknown Error" }, /* 25 */
69 { false, "UNKNOWN", "Unknown Error" }, /* 26 */
70 { false, "UNKNOWN", "Unknown Error" }, /* 27 */
71 { false, "UNKNOWN", "Unknown Error" }, /* 28 */
72 { false, "UNKNOWN", "Unknown Error" }, /* 29 */
73 { false, "UNKNOWN", "Unknown Error" }, /* 30 */
74 { false, "UNKNOWN", "Unknown Error" }, /* 31 */
75 };
76
dwmac5_handle_mac_err(struct net_device * ndev,void __iomem * ioaddr,bool correctable,struct stmmac_safety_stats * stats)77 static void dwmac5_handle_mac_err(struct net_device *ndev,
78 void __iomem *ioaddr, bool correctable,
79 struct stmmac_safety_stats *stats)
80 {
81 u32 value;
82
83 value = readl(ioaddr + MAC_DPP_FSM_INT_STATUS);
84 writel(value, ioaddr + MAC_DPP_FSM_INT_STATUS);
85
86 dwmac5_log_error(ndev, value, correctable, "MAC", dwmac5_mac_errors,
87 STAT_OFF(mac_errors), stats);
88 }
89
90 static const struct dwmac5_error_desc dwmac5_mtl_errors[32]= {
91 { true, "TXCES", "MTL TX Memory Error" },
92 { true, "TXAMS", "MTL TX Memory Address Mismatch Error" },
93 { true, "TXUES", "MTL TX Memory Error" },
94 { false, "UNKNOWN", "Unknown Error" }, /* 3 */
95 { true, "RXCES", "MTL RX Memory Error" },
96 { true, "RXAMS", "MTL RX Memory Address Mismatch Error" },
97 { true, "RXUES", "MTL RX Memory Error" },
98 { false, "UNKNOWN", "Unknown Error" }, /* 7 */
99 { true, "ECES", "MTL EST Memory Error" },
100 { true, "EAMS", "MTL EST Memory Address Mismatch Error" },
101 { true, "EUES", "MTL EST Memory Error" },
102 { false, "UNKNOWN", "Unknown Error" }, /* 11 */
103 { true, "RPCES", "MTL RX Parser Memory Error" },
104 { true, "RPAMS", "MTL RX Parser Memory Address Mismatch Error" },
105 { true, "RPUES", "MTL RX Parser Memory Error" },
106 { false, "UNKNOWN", "Unknown Error" }, /* 15 */
107 { false, "UNKNOWN", "Unknown Error" }, /* 16 */
108 { false, "UNKNOWN", "Unknown Error" }, /* 17 */
109 { false, "UNKNOWN", "Unknown Error" }, /* 18 */
110 { false, "UNKNOWN", "Unknown Error" }, /* 19 */
111 { false, "UNKNOWN", "Unknown Error" }, /* 20 */
112 { false, "UNKNOWN", "Unknown Error" }, /* 21 */
113 { false, "UNKNOWN", "Unknown Error" }, /* 22 */
114 { false, "UNKNOWN", "Unknown Error" }, /* 23 */
115 { false, "UNKNOWN", "Unknown Error" }, /* 24 */
116 { false, "UNKNOWN", "Unknown Error" }, /* 25 */
117 { false, "UNKNOWN", "Unknown Error" }, /* 26 */
118 { false, "UNKNOWN", "Unknown Error" }, /* 27 */
119 { false, "UNKNOWN", "Unknown Error" }, /* 28 */
120 { false, "UNKNOWN", "Unknown Error" }, /* 29 */
121 { false, "UNKNOWN", "Unknown Error" }, /* 30 */
122 { false, "UNKNOWN", "Unknown Error" }, /* 31 */
123 };
124
dwmac5_handle_mtl_err(struct net_device * ndev,void __iomem * ioaddr,bool correctable,struct stmmac_safety_stats * stats)125 static void dwmac5_handle_mtl_err(struct net_device *ndev,
126 void __iomem *ioaddr, bool correctable,
127 struct stmmac_safety_stats *stats)
128 {
129 u32 value;
130
131 value = readl(ioaddr + MTL_ECC_INT_STATUS);
132 writel(value, ioaddr + MTL_ECC_INT_STATUS);
133
134 dwmac5_log_error(ndev, value, correctable, "MTL", dwmac5_mtl_errors,
135 STAT_OFF(mtl_errors), stats);
136 }
137
138 static const struct dwmac5_error_desc dwmac5_dma_errors[32]= {
139 { true, "TCES", "DMA TSO Memory Error" },
140 { true, "TAMS", "DMA TSO Memory Address Mismatch Error" },
141 { true, "TUES", "DMA TSO Memory Error" },
142 { false, "UNKNOWN", "Unknown Error" }, /* 3 */
143 { false, "UNKNOWN", "Unknown Error" }, /* 4 */
144 { false, "UNKNOWN", "Unknown Error" }, /* 5 */
145 { false, "UNKNOWN", "Unknown Error" }, /* 6 */
146 { false, "UNKNOWN", "Unknown Error" }, /* 7 */
147 { false, "UNKNOWN", "Unknown Error" }, /* 8 */
148 { false, "UNKNOWN", "Unknown Error" }, /* 9 */
149 { false, "UNKNOWN", "Unknown Error" }, /* 10 */
150 { false, "UNKNOWN", "Unknown Error" }, /* 11 */
151 { false, "UNKNOWN", "Unknown Error" }, /* 12 */
152 { false, "UNKNOWN", "Unknown Error" }, /* 13 */
153 { false, "UNKNOWN", "Unknown Error" }, /* 14 */
154 { false, "UNKNOWN", "Unknown Error" }, /* 15 */
155 { false, "UNKNOWN", "Unknown Error" }, /* 16 */
156 { false, "UNKNOWN", "Unknown Error" }, /* 17 */
157 { false, "UNKNOWN", "Unknown Error" }, /* 18 */
158 { false, "UNKNOWN", "Unknown Error" }, /* 19 */
159 { false, "UNKNOWN", "Unknown Error" }, /* 20 */
160 { false, "UNKNOWN", "Unknown Error" }, /* 21 */
161 { false, "UNKNOWN", "Unknown Error" }, /* 22 */
162 { false, "UNKNOWN", "Unknown Error" }, /* 23 */
163 { false, "UNKNOWN", "Unknown Error" }, /* 24 */
164 { false, "UNKNOWN", "Unknown Error" }, /* 25 */
165 { false, "UNKNOWN", "Unknown Error" }, /* 26 */
166 { false, "UNKNOWN", "Unknown Error" }, /* 27 */
167 { false, "UNKNOWN", "Unknown Error" }, /* 28 */
168 { false, "UNKNOWN", "Unknown Error" }, /* 29 */
169 { false, "UNKNOWN", "Unknown Error" }, /* 30 */
170 { false, "UNKNOWN", "Unknown Error" }, /* 31 */
171 };
172
dwmac5_handle_dma_err(struct net_device * ndev,void __iomem * ioaddr,bool correctable,struct stmmac_safety_stats * stats)173 static void dwmac5_handle_dma_err(struct net_device *ndev,
174 void __iomem *ioaddr, bool correctable,
175 struct stmmac_safety_stats *stats)
176 {
177 u32 value;
178
179 value = readl(ioaddr + DMA_ECC_INT_STATUS);
180 writel(value, ioaddr + DMA_ECC_INT_STATUS);
181
182 dwmac5_log_error(ndev, value, correctable, "DMA", dwmac5_dma_errors,
183 STAT_OFF(dma_errors), stats);
184 }
185
dwmac5_safety_feat_config(void __iomem * ioaddr,unsigned int asp,struct stmmac_safety_feature_cfg * safety_feat_cfg)186 int dwmac5_safety_feat_config(void __iomem *ioaddr, unsigned int asp,
187 struct stmmac_safety_feature_cfg *safety_feat_cfg)
188 {
189 u32 value;
190
191 if (!asp)
192 return -EINVAL;
193
194 /* 1. Enable Safety Features */
195 value = readl(ioaddr + MTL_ECC_CONTROL);
196 value |= MEEAO; /* MTL ECC Error Addr Status Override */
197 if (safety_feat_cfg->tsoee)
198 value |= TSOEE; /* TSO ECC */
199 if (safety_feat_cfg->mrxpee)
200 value |= MRXPEE; /* MTL RX Parser ECC */
201 if (safety_feat_cfg->mestee)
202 value |= MESTEE; /* MTL EST ECC */
203 if (safety_feat_cfg->mrxee)
204 value |= MRXEE; /* MTL RX FIFO ECC */
205 if (safety_feat_cfg->mtxee)
206 value |= MTXEE; /* MTL TX FIFO ECC */
207 writel(value, ioaddr + MTL_ECC_CONTROL);
208
209 /* 2. Enable MTL Safety Interrupts */
210 value = readl(ioaddr + MTL_ECC_INT_ENABLE);
211 value |= RPCEIE; /* RX Parser Memory Correctable Error */
212 value |= ECEIE; /* EST Memory Correctable Error */
213 value |= RXCEIE; /* RX Memory Correctable Error */
214 value |= TXCEIE; /* TX Memory Correctable Error */
215 writel(value, ioaddr + MTL_ECC_INT_ENABLE);
216
217 /* 3. Enable DMA Safety Interrupts */
218 value = readl(ioaddr + DMA_ECC_INT_ENABLE);
219 value |= TCEIE; /* TSO Memory Correctable Error */
220 writel(value, ioaddr + DMA_ECC_INT_ENABLE);
221
222 /* Only ECC Protection for External Memory feature is selected */
223 if (asp <= 0x1)
224 return 0;
225
226 /* 5. Enable Parity and Timeout for FSM */
227 value = readl(ioaddr + MAC_FSM_CONTROL);
228 if (safety_feat_cfg->prtyen)
229 value |= PRTYEN; /* FSM Parity Feature */
230 if (safety_feat_cfg->tmouten)
231 value |= TMOUTEN; /* FSM Timeout Feature */
232 writel(value, ioaddr + MAC_FSM_CONTROL);
233
234 /* 4. Enable Data Parity Protection */
235 value = readl(ioaddr + MTL_DPP_CONTROL);
236 if (safety_feat_cfg->edpp)
237 value |= EDPP;
238 writel(value, ioaddr + MTL_DPP_CONTROL);
239
240 /*
241 * All the Automotive Safety features are selected without the "Parity
242 * Port Enable for external interface" feature.
243 */
244 if (asp <= 0x2)
245 return 0;
246
247 if (safety_feat_cfg->epsi)
248 value |= EPSI;
249 writel(value, ioaddr + MTL_DPP_CONTROL);
250 return 0;
251 }
252
dwmac5_safety_feat_irq_status(struct net_device * ndev,void __iomem * ioaddr,unsigned int asp,struct stmmac_safety_stats * stats)253 int dwmac5_safety_feat_irq_status(struct net_device *ndev,
254 void __iomem *ioaddr, unsigned int asp,
255 struct stmmac_safety_stats *stats)
256 {
257 bool err, corr;
258 u32 mtl, dma;
259 int ret = 0;
260
261 if (!asp)
262 return -EINVAL;
263
264 mtl = readl(ioaddr + MTL_SAFETY_INT_STATUS);
265 dma = readl(ioaddr + DMA_SAFETY_INT_STATUS);
266
267 err = (mtl & MCSIS) || (dma & MCSIS);
268 corr = false;
269 if (err) {
270 dwmac5_handle_mac_err(ndev, ioaddr, corr, stats);
271 ret |= !corr;
272 }
273
274 err = (mtl & (MEUIS | MECIS)) || (dma & (MSUIS | MSCIS));
275 corr = (mtl & MECIS) || (dma & MSCIS);
276 if (err) {
277 dwmac5_handle_mtl_err(ndev, ioaddr, corr, stats);
278 ret |= !corr;
279 }
280
281 err = dma & (DEUIS | DECIS);
282 corr = dma & DECIS;
283 if (err) {
284 dwmac5_handle_dma_err(ndev, ioaddr, corr, stats);
285 ret |= !corr;
286 }
287
288 return ret;
289 }
290
291 static const struct dwmac5_error {
292 const struct dwmac5_error_desc *desc;
293 } dwmac5_all_errors[] = {
294 { dwmac5_mac_errors },
295 { dwmac5_mtl_errors },
296 { dwmac5_dma_errors },
297 };
298
dwmac5_safety_feat_dump(struct stmmac_safety_stats * stats,int index,unsigned long * count,const char ** desc)299 int dwmac5_safety_feat_dump(struct stmmac_safety_stats *stats,
300 int index, unsigned long *count, const char **desc)
301 {
302 int module = index / 32, offset = index % 32;
303 unsigned long *ptr = (unsigned long *)stats;
304
305 if (module >= ARRAY_SIZE(dwmac5_all_errors))
306 return -EINVAL;
307 if (!dwmac5_all_errors[module].desc[offset].valid)
308 return -EINVAL;
309 if (count)
310 *count = *(ptr + index);
311 if (desc)
312 *desc = dwmac5_all_errors[module].desc[offset].desc;
313 return 0;
314 }
315
dwmac5_rxp_disable(void __iomem * ioaddr)316 static int dwmac5_rxp_disable(void __iomem *ioaddr)
317 {
318 u32 val;
319
320 val = readl(ioaddr + MTL_OPERATION_MODE);
321 val &= ~MTL_FRPE;
322 writel(val, ioaddr + MTL_OPERATION_MODE);
323
324 return readl_poll_timeout(ioaddr + MTL_RXP_CONTROL_STATUS, val,
325 val & RXPI, 1, 10000);
326 }
327
dwmac5_rxp_enable(void __iomem * ioaddr)328 static void dwmac5_rxp_enable(void __iomem *ioaddr)
329 {
330 u32 val;
331
332 val = readl(ioaddr + MTL_OPERATION_MODE);
333 val |= MTL_FRPE;
334 writel(val, ioaddr + MTL_OPERATION_MODE);
335 }
336
dwmac5_rxp_update_single_entry(void __iomem * ioaddr,struct stmmac_tc_entry * entry,int pos)337 static int dwmac5_rxp_update_single_entry(void __iomem *ioaddr,
338 struct stmmac_tc_entry *entry,
339 int pos)
340 {
341 int ret, i;
342
343 for (i = 0; i < (sizeof(entry->val) / sizeof(u32)); i++) {
344 int real_pos = pos * (sizeof(entry->val) / sizeof(u32)) + i;
345 u32 val;
346
347 /* Wait for ready */
348 ret = readl_poll_timeout(ioaddr + MTL_RXP_IACC_CTRL_STATUS,
349 val, !(val & STARTBUSY), 1, 10000);
350 if (ret)
351 return ret;
352
353 /* Write data */
354 val = *((u32 *)&entry->val + i);
355 writel(val, ioaddr + MTL_RXP_IACC_DATA);
356
357 /* Write pos */
358 val = real_pos & ADDR;
359 writel(val, ioaddr + MTL_RXP_IACC_CTRL_STATUS);
360
361 /* Write OP */
362 val |= WRRDN;
363 writel(val, ioaddr + MTL_RXP_IACC_CTRL_STATUS);
364
365 /* Start Write */
366 val |= STARTBUSY;
367 writel(val, ioaddr + MTL_RXP_IACC_CTRL_STATUS);
368
369 /* Wait for done */
370 ret = readl_poll_timeout(ioaddr + MTL_RXP_IACC_CTRL_STATUS,
371 val, !(val & STARTBUSY), 1, 10000);
372 if (ret)
373 return ret;
374 }
375
376 return 0;
377 }
378
379 static struct stmmac_tc_entry *
dwmac5_rxp_get_next_entry(struct stmmac_tc_entry * entries,unsigned int count,u32 curr_prio)380 dwmac5_rxp_get_next_entry(struct stmmac_tc_entry *entries, unsigned int count,
381 u32 curr_prio)
382 {
383 struct stmmac_tc_entry *entry;
384 u32 min_prio = ~0x0;
385 int i, min_prio_idx;
386 bool found = false;
387
388 for (i = count - 1; i >= 0; i--) {
389 entry = &entries[i];
390
391 /* Do not update unused entries */
392 if (!entry->in_use)
393 continue;
394 /* Do not update already updated entries (i.e. fragments) */
395 if (entry->in_hw)
396 continue;
397 /* Let last entry be updated last */
398 if (entry->is_last)
399 continue;
400 /* Do not return fragments */
401 if (entry->is_frag)
402 continue;
403 /* Check if we already checked this prio */
404 if (entry->prio < curr_prio)
405 continue;
406 /* Check if this is the minimum prio */
407 if (entry->prio < min_prio) {
408 min_prio = entry->prio;
409 min_prio_idx = i;
410 found = true;
411 }
412 }
413
414 if (found)
415 return &entries[min_prio_idx];
416 return NULL;
417 }
418
dwmac5_rxp_config(void __iomem * ioaddr,struct stmmac_tc_entry * entries,unsigned int count)419 int dwmac5_rxp_config(void __iomem *ioaddr, struct stmmac_tc_entry *entries,
420 unsigned int count)
421 {
422 struct stmmac_tc_entry *entry, *frag;
423 int i, ret, nve = 0;
424 u32 curr_prio = 0;
425 u32 old_val, val;
426
427 /* Force disable RX */
428 old_val = readl(ioaddr + GMAC_CONFIG);
429 val = old_val & ~GMAC_CONFIG_RE;
430 writel(val, ioaddr + GMAC_CONFIG);
431
432 /* Disable RX Parser */
433 ret = dwmac5_rxp_disable(ioaddr);
434 if (ret)
435 goto re_enable;
436
437 /* Set all entries as NOT in HW */
438 for (i = 0; i < count; i++) {
439 entry = &entries[i];
440 entry->in_hw = false;
441 }
442
443 /* Update entries by reverse order */
444 while (1) {
445 entry = dwmac5_rxp_get_next_entry(entries, count, curr_prio);
446 if (!entry)
447 break;
448
449 curr_prio = entry->prio;
450 frag = entry->frag_ptr;
451
452 /* Set special fragment requirements */
453 if (frag) {
454 entry->val.af = 0;
455 entry->val.rf = 0;
456 entry->val.nc = 1;
457 entry->val.ok_index = nve + 2;
458 }
459
460 ret = dwmac5_rxp_update_single_entry(ioaddr, entry, nve);
461 if (ret)
462 goto re_enable;
463
464 entry->table_pos = nve++;
465 entry->in_hw = true;
466
467 if (frag && !frag->in_hw) {
468 ret = dwmac5_rxp_update_single_entry(ioaddr, frag, nve);
469 if (ret)
470 goto re_enable;
471 frag->table_pos = nve++;
472 frag->in_hw = true;
473 }
474 }
475
476 if (!nve)
477 goto re_enable;
478
479 /* Update all pass entry */
480 for (i = 0; i < count; i++) {
481 entry = &entries[i];
482 if (!entry->is_last)
483 continue;
484
485 ret = dwmac5_rxp_update_single_entry(ioaddr, entry, nve);
486 if (ret)
487 goto re_enable;
488
489 entry->table_pos = nve++;
490 }
491
492 /* Assume n. of parsable entries == n. of valid entries */
493 val = (nve << 16) & NPE;
494 val |= nve & NVE;
495 writel(val, ioaddr + MTL_RXP_CONTROL_STATUS);
496
497 /* Enable RX Parser */
498 dwmac5_rxp_enable(ioaddr);
499
500 re_enable:
501 /* Re-enable RX */
502 writel(old_val, ioaddr + GMAC_CONFIG);
503 return ret;
504 }
505
dwmac5_flex_pps_config(void __iomem * ioaddr,int index,struct stmmac_pps_cfg * cfg,bool enable,u32 sub_second_inc,u32 systime_flags)506 int dwmac5_flex_pps_config(void __iomem *ioaddr, int index,
507 struct stmmac_pps_cfg *cfg, bool enable,
508 u32 sub_second_inc, u32 systime_flags)
509 {
510 u32 tnsec = readl(ioaddr + MAC_PPSx_TARGET_TIME_NSEC(index));
511 u32 val = readl(ioaddr + MAC_PPS_CONTROL);
512 u64 period;
513
514 if (!cfg->available)
515 return -EINVAL;
516 if (tnsec & TRGTBUSY0)
517 return -EBUSY;
518 if (!sub_second_inc || !systime_flags)
519 return -EINVAL;
520
521 val &= ~PPSx_MASK(index);
522
523 if (!enable) {
524 val |= PPSCMDx(index, 0x5);
525 val |= PPSEN0;
526 writel(val, ioaddr + MAC_PPS_CONTROL);
527 return 0;
528 }
529
530 val |= PPSCMDx(index, 0x2);
531 val |= TRGTMODSELx(index, 0x2);
532 val |= PPSEN0;
533
534 writel(cfg->start.tv_sec, ioaddr + MAC_PPSx_TARGET_TIME_SEC(index));
535
536 if (!(systime_flags & PTP_TCR_TSCTRLSSR))
537 cfg->start.tv_nsec = (cfg->start.tv_nsec * 1000) / 465;
538 writel(cfg->start.tv_nsec, ioaddr + MAC_PPSx_TARGET_TIME_NSEC(index));
539
540 period = cfg->period.tv_sec * 1000000000;
541 period += cfg->period.tv_nsec;
542
543 do_div(period, sub_second_inc);
544
545 if (period <= 1)
546 return -EINVAL;
547
548 writel(period - 1, ioaddr + MAC_PPSx_INTERVAL(index));
549
550 period >>= 1;
551 if (period <= 1)
552 return -EINVAL;
553
554 writel(period - 1, ioaddr + MAC_PPSx_WIDTH(index));
555
556 /* Finally, activate it */
557 writel(val, ioaddr + MAC_PPS_CONTROL);
558 return 0;
559 }
560
dwmac5_est_write(void __iomem * ioaddr,u32 reg,u32 val,bool gcl)561 static int dwmac5_est_write(void __iomem *ioaddr, u32 reg, u32 val, bool gcl)
562 {
563 u32 ctrl;
564
565 writel(val, ioaddr + MTL_EST_GCL_DATA);
566
567 ctrl = (reg << ADDR_SHIFT);
568 ctrl |= gcl ? 0 : GCRR;
569
570 writel(ctrl, ioaddr + MTL_EST_GCL_CONTROL);
571
572 ctrl |= SRWO;
573 writel(ctrl, ioaddr + MTL_EST_GCL_CONTROL);
574
575 return readl_poll_timeout(ioaddr + MTL_EST_GCL_CONTROL,
576 ctrl, !(ctrl & SRWO), 100, 5000);
577 }
578
dwmac5_est_configure(void __iomem * ioaddr,struct stmmac_est * cfg,unsigned int ptp_rate)579 int dwmac5_est_configure(void __iomem *ioaddr, struct stmmac_est *cfg,
580 unsigned int ptp_rate)
581 {
582 int i, ret = 0x0;
583 u32 ctrl;
584
585 ret |= dwmac5_est_write(ioaddr, BTR_LOW, cfg->btr[0], false);
586 ret |= dwmac5_est_write(ioaddr, BTR_HIGH, cfg->btr[1], false);
587 ret |= dwmac5_est_write(ioaddr, TER, cfg->ter, false);
588 ret |= dwmac5_est_write(ioaddr, LLR, cfg->gcl_size, false);
589 ret |= dwmac5_est_write(ioaddr, CTR_LOW, cfg->ctr[0], false);
590 ret |= dwmac5_est_write(ioaddr, CTR_HIGH, cfg->ctr[1], false);
591 if (ret)
592 return ret;
593
594 for (i = 0; i < cfg->gcl_size; i++) {
595 ret = dwmac5_est_write(ioaddr, i, cfg->gcl[i], true);
596 if (ret)
597 return ret;
598 }
599
600 ctrl = readl(ioaddr + MTL_EST_CONTROL);
601 ctrl &= ~PTOV;
602 ctrl |= ((1000000000 / ptp_rate) * 6) << PTOV_SHIFT;
603 if (cfg->enable)
604 ctrl |= EEST | SSWL;
605 else
606 ctrl &= ~EEST;
607
608 writel(ctrl, ioaddr + MTL_EST_CONTROL);
609
610 /* Configure EST interrupt */
611 if (cfg->enable)
612 ctrl = (IECGCE | IEHS | IEHF | IEBE | IECC);
613 else
614 ctrl = 0;
615
616 writel(ctrl, ioaddr + MTL_EST_INT_EN);
617
618 return 0;
619 }
620
dwmac5_est_irq_status(void __iomem * ioaddr,struct net_device * dev,struct stmmac_extra_stats * x,u32 txqcnt)621 void dwmac5_est_irq_status(void __iomem *ioaddr, struct net_device *dev,
622 struct stmmac_extra_stats *x, u32 txqcnt)
623 {
624 u32 status, value, feqn, hbfq, hbfs, btrl;
625 u32 txqcnt_mask = (1 << txqcnt) - 1;
626
627 status = readl(ioaddr + MTL_EST_STATUS);
628
629 value = (CGCE | HLBS | HLBF | BTRE | SWLC);
630
631 /* Return if there is no error */
632 if (!(status & value))
633 return;
634
635 if (status & CGCE) {
636 /* Clear Interrupt */
637 writel(CGCE, ioaddr + MTL_EST_STATUS);
638
639 x->mtl_est_cgce++;
640 }
641
642 if (status & HLBS) {
643 value = readl(ioaddr + MTL_EST_SCH_ERR);
644 value &= txqcnt_mask;
645
646 x->mtl_est_hlbs++;
647
648 /* Clear Interrupt */
649 writel(value, ioaddr + MTL_EST_SCH_ERR);
650
651 /* Collecting info to shows all the queues that has HLBS
652 * issue. The only way to clear this is to clear the
653 * statistic
654 */
655 if (net_ratelimit())
656 netdev_err(dev, "EST: HLB(sched) Queue 0x%x\n", value);
657 }
658
659 if (status & HLBF) {
660 value = readl(ioaddr + MTL_EST_FRM_SZ_ERR);
661 feqn = value & txqcnt_mask;
662
663 value = readl(ioaddr + MTL_EST_FRM_SZ_CAP);
664 hbfq = (value & SZ_CAP_HBFQ_MASK(txqcnt)) >> SZ_CAP_HBFQ_SHIFT;
665 hbfs = value & SZ_CAP_HBFS_MASK;
666
667 x->mtl_est_hlbf++;
668
669 /* Clear Interrupt */
670 writel(feqn, ioaddr + MTL_EST_FRM_SZ_ERR);
671
672 if (net_ratelimit())
673 netdev_err(dev, "EST: HLB(size) Queue %u Size %u\n",
674 hbfq, hbfs);
675 }
676
677 if (status & BTRE) {
678 if ((status & BTRL) == BTRL_MAX)
679 x->mtl_est_btrlm++;
680 else
681 x->mtl_est_btre++;
682
683 btrl = (status & BTRL) >> BTRL_SHIFT;
684
685 if (net_ratelimit())
686 netdev_info(dev, "EST: BTR Error Loop Count %u\n",
687 btrl);
688
689 writel(BTRE, ioaddr + MTL_EST_STATUS);
690 }
691
692 if (status & SWLC) {
693 writel(SWLC, ioaddr + MTL_EST_STATUS);
694 netdev_info(dev, "EST: SWOL has been switched\n");
695 }
696 }
697
dwmac5_fpe_configure(void __iomem * ioaddr,u32 num_txq,u32 num_rxq,bool enable)698 void dwmac5_fpe_configure(void __iomem *ioaddr, u32 num_txq, u32 num_rxq,
699 bool enable)
700 {
701 u32 value;
702
703 if (!enable) {
704 value = readl(ioaddr + MAC_FPE_CTRL_STS);
705
706 value &= ~EFPE;
707
708 writel(value, ioaddr + MAC_FPE_CTRL_STS);
709 return;
710 }
711
712 value = readl(ioaddr + GMAC_RXQ_CTRL1);
713 value &= ~GMAC_RXQCTRL_FPRQ;
714 value |= (num_rxq - 1) << GMAC_RXQCTRL_FPRQ_SHIFT;
715 writel(value, ioaddr + GMAC_RXQ_CTRL1);
716
717 value = readl(ioaddr + MAC_FPE_CTRL_STS);
718 value |= EFPE;
719 writel(value, ioaddr + MAC_FPE_CTRL_STS);
720 }
721
dwmac5_fpe_irq_status(void __iomem * ioaddr,struct net_device * dev)722 int dwmac5_fpe_irq_status(void __iomem *ioaddr, struct net_device *dev)
723 {
724 u32 value;
725 int status;
726
727 status = FPE_EVENT_UNKNOWN;
728
729 value = readl(ioaddr + MAC_FPE_CTRL_STS);
730
731 if (value & TRSP) {
732 status |= FPE_EVENT_TRSP;
733 netdev_info(dev, "FPE: Respond mPacket is transmitted\n");
734 }
735
736 if (value & TVER) {
737 status |= FPE_EVENT_TVER;
738 netdev_info(dev, "FPE: Verify mPacket is transmitted\n");
739 }
740
741 if (value & RRSP) {
742 status |= FPE_EVENT_RRSP;
743 netdev_info(dev, "FPE: Respond mPacket is received\n");
744 }
745
746 if (value & RVER) {
747 status |= FPE_EVENT_RVER;
748 netdev_info(dev, "FPE: Verify mPacket is received\n");
749 }
750
751 return status;
752 }
753
dwmac5_fpe_send_mpacket(void __iomem * ioaddr,enum stmmac_mpacket_type type)754 void dwmac5_fpe_send_mpacket(void __iomem *ioaddr, enum stmmac_mpacket_type type)
755 {
756 u32 value;
757
758 value = readl(ioaddr + MAC_FPE_CTRL_STS);
759
760 if (type == MPACKET_VERIFY) {
761 value &= ~SRSP;
762 value |= SVER;
763 } else {
764 value &= ~SVER;
765 value |= SRSP;
766 }
767
768 writel(value, ioaddr + MAC_FPE_CTRL_STS);
769 }
770