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7#include "fjes_hw.h"
8#include "fjes.h"
9#include "fjes_trace.h"
10
11static void fjes_hw_update_zone_task(struct work_struct *);
12static void fjes_hw_epstop_task(struct work_struct *);
13
14
15const u32 fjes_support_mtu[] = {
16 FJES_MTU_DEFINE(8 * 1024),
17 FJES_MTU_DEFINE(16 * 1024),
18 FJES_MTU_DEFINE(32 * 1024),
19 FJES_MTU_DEFINE(64 * 1024),
20 0
21};
22
23u32 fjes_hw_rd32(struct fjes_hw *hw, u32 reg)
24{
25 u8 *base = hw->base;
26 u32 value = 0;
27
28 value = readl(&base[reg]);
29
30 return value;
31}
32
33static u8 *fjes_hw_iomap(struct fjes_hw *hw)
34{
35 u8 *base;
36
37 if (!request_mem_region(hw->hw_res.start, hw->hw_res.size,
38 fjes_driver_name)) {
39 pr_err("request_mem_region failed\n");
40 return NULL;
41 }
42
43 base = (u8 *)ioremap_nocache(hw->hw_res.start, hw->hw_res.size);
44
45 return base;
46}
47
48static void fjes_hw_iounmap(struct fjes_hw *hw)
49{
50 iounmap(hw->base);
51 release_mem_region(hw->hw_res.start, hw->hw_res.size);
52}
53
54int fjes_hw_reset(struct fjes_hw *hw)
55{
56 union REG_DCTL dctl;
57 int timeout;
58
59 dctl.reg = 0;
60 dctl.bits.reset = 1;
61 wr32(XSCT_DCTL, dctl.reg);
62
63 timeout = FJES_DEVICE_RESET_TIMEOUT * 1000;
64 dctl.reg = rd32(XSCT_DCTL);
65 while ((dctl.bits.reset == 1) && (timeout > 0)) {
66 msleep(1000);
67 dctl.reg = rd32(XSCT_DCTL);
68 timeout -= 1000;
69 }
70
71 return timeout > 0 ? 0 : -EIO;
72}
73
74static int fjes_hw_get_max_epid(struct fjes_hw *hw)
75{
76 union REG_MAX_EP info;
77
78 info.reg = rd32(XSCT_MAX_EP);
79
80 return info.bits.maxep;
81}
82
83static int fjes_hw_get_my_epid(struct fjes_hw *hw)
84{
85 union REG_OWNER_EPID info;
86
87 info.reg = rd32(XSCT_OWNER_EPID);
88
89 return info.bits.epid;
90}
91
92static int fjes_hw_alloc_shared_status_region(struct fjes_hw *hw)
93{
94 size_t size;
95
96 size = sizeof(struct fjes_device_shared_info) +
97 (sizeof(u8) * hw->max_epid);
98 hw->hw_info.share = kzalloc(size, GFP_KERNEL);
99 if (!hw->hw_info.share)
100 return -ENOMEM;
101
102 hw->hw_info.share->epnum = hw->max_epid;
103
104 return 0;
105}
106
107static void fjes_hw_free_shared_status_region(struct fjes_hw *hw)
108{
109 kfree(hw->hw_info.share);
110 hw->hw_info.share = NULL;
111}
112
113static int fjes_hw_alloc_epbuf(struct epbuf_handler *epbh)
114{
115 void *mem;
116
117 mem = vzalloc(EP_BUFFER_SIZE);
118 if (!mem)
119 return -ENOMEM;
120
121 epbh->buffer = mem;
122 epbh->size = EP_BUFFER_SIZE;
123
124 epbh->info = (union ep_buffer_info *)mem;
125 epbh->ring = (u8 *)(mem + sizeof(union ep_buffer_info));
126
127 return 0;
128}
129
130static void fjes_hw_free_epbuf(struct epbuf_handler *epbh)
131{
132 vfree(epbh->buffer);
133 epbh->buffer = NULL;
134 epbh->size = 0;
135
136 epbh->info = NULL;
137 epbh->ring = NULL;
138}
139
140void fjes_hw_setup_epbuf(struct epbuf_handler *epbh, u8 *mac_addr, u32 mtu)
141{
142 union ep_buffer_info *info = epbh->info;
143 u16 vlan_id[EP_BUFFER_SUPPORT_VLAN_MAX];
144 int i;
145
146 for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++)
147 vlan_id[i] = info->v1i.vlan_id[i];
148
149 memset(info, 0, sizeof(union ep_buffer_info));
150
151 info->v1i.version = 0;
152
153 for (i = 0; i < ETH_ALEN; i++)
154 info->v1i.mac_addr[i] = mac_addr[i];
155
156 info->v1i.head = 0;
157 info->v1i.tail = 1;
158
159 info->v1i.info_size = sizeof(union ep_buffer_info);
160 info->v1i.buffer_size = epbh->size - info->v1i.info_size;
161
162 info->v1i.frame_max = FJES_MTU_TO_FRAME_SIZE(mtu);
163 info->v1i.count_max =
164 EP_RING_NUM(info->v1i.buffer_size, info->v1i.frame_max);
165
166 for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++)
167 info->v1i.vlan_id[i] = vlan_id[i];
168
169 info->v1i.rx_status |= FJES_RX_MTU_CHANGING_DONE;
170}
171
172void
173fjes_hw_init_command_registers(struct fjes_hw *hw,
174 struct fjes_device_command_param *param)
175{
176
177 wr32(XSCT_REQBL, (__le32)(param->req_len));
178
179 wr32(XSCT_RESPBL, (__le32)(param->res_len));
180
181
182 wr32(XSCT_REQBAL,
183 (__le32)(param->req_start & GENMASK_ULL(31, 0)));
184 wr32(XSCT_REQBAH,
185 (__le32)((param->req_start & GENMASK_ULL(63, 32)) >> 32));
186
187
188 wr32(XSCT_RESPBAL,
189 (__le32)(param->res_start & GENMASK_ULL(31, 0)));
190 wr32(XSCT_RESPBAH,
191 (__le32)((param->res_start & GENMASK_ULL(63, 32)) >> 32));
192
193
194 wr32(XSCT_SHSTSAL,
195 (__le32)(param->share_start & GENMASK_ULL(31, 0)));
196 wr32(XSCT_SHSTSAH,
197 (__le32)((param->share_start & GENMASK_ULL(63, 32)) >> 32));
198}
199
200static int fjes_hw_setup(struct fjes_hw *hw)
201{
202 u8 mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
203 struct fjes_device_command_param param;
204 struct ep_share_mem_info *buf_pair;
205 unsigned long flags;
206 size_t mem_size;
207 int result;
208 int epidx;
209 void *buf;
210
211 hw->hw_info.max_epid = &hw->max_epid;
212 hw->hw_info.my_epid = &hw->my_epid;
213
214 buf = kcalloc(hw->max_epid, sizeof(struct ep_share_mem_info),
215 GFP_KERNEL);
216 if (!buf)
217 return -ENOMEM;
218
219 hw->ep_shm_info = (struct ep_share_mem_info *)buf;
220
221 mem_size = FJES_DEV_REQ_BUF_SIZE(hw->max_epid);
222 hw->hw_info.req_buf = kzalloc(mem_size, GFP_KERNEL);
223 if (!(hw->hw_info.req_buf))
224 return -ENOMEM;
225
226 hw->hw_info.req_buf_size = mem_size;
227
228 mem_size = FJES_DEV_RES_BUF_SIZE(hw->max_epid);
229 hw->hw_info.res_buf = kzalloc(mem_size, GFP_KERNEL);
230 if (!(hw->hw_info.res_buf))
231 return -ENOMEM;
232
233 hw->hw_info.res_buf_size = mem_size;
234
235 result = fjes_hw_alloc_shared_status_region(hw);
236 if (result)
237 return result;
238
239 hw->hw_info.buffer_share_bit = 0;
240 hw->hw_info.buffer_unshare_reserve_bit = 0;
241
242 for (epidx = 0; epidx < hw->max_epid; epidx++) {
243 if (epidx != hw->my_epid) {
244 buf_pair = &hw->ep_shm_info[epidx];
245
246 result = fjes_hw_alloc_epbuf(&buf_pair->tx);
247 if (result)
248 return result;
249
250 result = fjes_hw_alloc_epbuf(&buf_pair->rx);
251 if (result)
252 return result;
253
254 spin_lock_irqsave(&hw->rx_status_lock, flags);
255 fjes_hw_setup_epbuf(&buf_pair->tx, mac,
256 fjes_support_mtu[0]);
257 fjes_hw_setup_epbuf(&buf_pair->rx, mac,
258 fjes_support_mtu[0]);
259 spin_unlock_irqrestore(&hw->rx_status_lock, flags);
260 }
261 }
262
263 memset(¶m, 0, sizeof(param));
264
265 param.req_len = hw->hw_info.req_buf_size;
266 param.req_start = __pa(hw->hw_info.req_buf);
267 param.res_len = hw->hw_info.res_buf_size;
268 param.res_start = __pa(hw->hw_info.res_buf);
269
270 param.share_start = __pa(hw->hw_info.share->ep_status);
271
272 fjes_hw_init_command_registers(hw, ¶m);
273
274 return 0;
275}
276
277static void fjes_hw_cleanup(struct fjes_hw *hw)
278{
279 int epidx;
280
281 if (!hw->ep_shm_info)
282 return;
283
284 fjes_hw_free_shared_status_region(hw);
285
286 kfree(hw->hw_info.req_buf);
287 hw->hw_info.req_buf = NULL;
288
289 kfree(hw->hw_info.res_buf);
290 hw->hw_info.res_buf = NULL;
291
292 for (epidx = 0; epidx < hw->max_epid ; epidx++) {
293 if (epidx == hw->my_epid)
294 continue;
295 fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].tx);
296 fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].rx);
297 }
298
299 kfree(hw->ep_shm_info);
300 hw->ep_shm_info = NULL;
301}
302
303int fjes_hw_init(struct fjes_hw *hw)
304{
305 int ret;
306
307 hw->base = fjes_hw_iomap(hw);
308 if (!hw->base)
309 return -EIO;
310
311 ret = fjes_hw_reset(hw);
312 if (ret)
313 return ret;
314
315 fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, true);
316
317 INIT_WORK(&hw->update_zone_task, fjes_hw_update_zone_task);
318 INIT_WORK(&hw->epstop_task, fjes_hw_epstop_task);
319
320 mutex_init(&hw->hw_info.lock);
321 spin_lock_init(&hw->rx_status_lock);
322
323 hw->max_epid = fjes_hw_get_max_epid(hw);
324 hw->my_epid = fjes_hw_get_my_epid(hw);
325
326 if ((hw->max_epid == 0) || (hw->my_epid >= hw->max_epid))
327 return -ENXIO;
328
329 ret = fjes_hw_setup(hw);
330
331 hw->hw_info.trace = vzalloc(FJES_DEBUG_BUFFER_SIZE);
332 hw->hw_info.trace_size = FJES_DEBUG_BUFFER_SIZE;
333
334 return ret;
335}
336
337void fjes_hw_exit(struct fjes_hw *hw)
338{
339 int ret;
340
341 if (hw->base) {
342
343 if (hw->debug_mode) {
344
345 mutex_lock(&hw->hw_info.lock);
346 fjes_hw_stop_debug(hw);
347 mutex_unlock(&hw->hw_info.lock);
348 }
349 vfree(hw->hw_info.trace);
350 hw->hw_info.trace = NULL;
351 hw->hw_info.trace_size = 0;
352 hw->debug_mode = 0;
353
354 ret = fjes_hw_reset(hw);
355 if (ret)
356 pr_err("%s: reset error", __func__);
357
358 fjes_hw_iounmap(hw);
359 hw->base = NULL;
360 }
361
362 fjes_hw_cleanup(hw);
363
364 cancel_work_sync(&hw->update_zone_task);
365 cancel_work_sync(&hw->epstop_task);
366}
367
368static enum fjes_dev_command_response_e
369fjes_hw_issue_request_command(struct fjes_hw *hw,
370 enum fjes_dev_command_request_type type)
371{
372 enum fjes_dev_command_response_e ret = FJES_CMD_STATUS_UNKNOWN;
373 union REG_CR cr;
374 union REG_CS cs;
375 int timeout = FJES_COMMAND_REQ_TIMEOUT * 1000;
376
377 cr.reg = 0;
378 cr.bits.req_start = 1;
379 cr.bits.req_code = type;
380 wr32(XSCT_CR, cr.reg);
381 cr.reg = rd32(XSCT_CR);
382
383 if (cr.bits.error == 0) {
384 timeout = FJES_COMMAND_REQ_TIMEOUT * 1000;
385 cs.reg = rd32(XSCT_CS);
386
387 while ((cs.bits.complete != 1) && timeout > 0) {
388 msleep(1000);
389 cs.reg = rd32(XSCT_CS);
390 timeout -= 1000;
391 }
392
393 if (cs.bits.complete == 1)
394 ret = FJES_CMD_STATUS_NORMAL;
395 else if (timeout <= 0)
396 ret = FJES_CMD_STATUS_TIMEOUT;
397
398 } else {
399 switch (cr.bits.err_info) {
400 case FJES_CMD_REQ_ERR_INFO_PARAM:
401 ret = FJES_CMD_STATUS_ERROR_PARAM;
402 break;
403 case FJES_CMD_REQ_ERR_INFO_STATUS:
404 ret = FJES_CMD_STATUS_ERROR_STATUS;
405 break;
406 default:
407 ret = FJES_CMD_STATUS_UNKNOWN;
408 break;
409 }
410 }
411
412 trace_fjes_hw_issue_request_command(&cr, &cs, timeout, ret);
413
414 return ret;
415}
416
417int fjes_hw_request_info(struct fjes_hw *hw)
418{
419 union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
420 union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
421 enum fjes_dev_command_response_e ret;
422 int result;
423
424 memset(req_buf, 0, hw->hw_info.req_buf_size);
425 memset(res_buf, 0, hw->hw_info.res_buf_size);
426
427 req_buf->info.length = FJES_DEV_COMMAND_INFO_REQ_LEN;
428
429 res_buf->info.length = 0;
430 res_buf->info.code = 0;
431
432 ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_INFO);
433 trace_fjes_hw_request_info(hw, res_buf);
434
435 result = 0;
436
437 if (FJES_DEV_COMMAND_INFO_RES_LEN((*hw->hw_info.max_epid)) !=
438 res_buf->info.length) {
439 trace_fjes_hw_request_info_err("Invalid res_buf");
440 result = -ENOMSG;
441 } else if (ret == FJES_CMD_STATUS_NORMAL) {
442 switch (res_buf->info.code) {
443 case FJES_CMD_REQ_RES_CODE_NORMAL:
444 result = 0;
445 break;
446 default:
447 result = -EPERM;
448 break;
449 }
450 } else {
451 switch (ret) {
452 case FJES_CMD_STATUS_UNKNOWN:
453 result = -EPERM;
454 break;
455 case FJES_CMD_STATUS_TIMEOUT:
456 trace_fjes_hw_request_info_err("Timeout");
457 result = -EBUSY;
458 break;
459 case FJES_CMD_STATUS_ERROR_PARAM:
460 result = -EPERM;
461 break;
462 case FJES_CMD_STATUS_ERROR_STATUS:
463 result = -EPERM;
464 break;
465 default:
466 result = -EPERM;
467 break;
468 }
469 }
470
471 return result;
472}
473
474int fjes_hw_register_buff_addr(struct fjes_hw *hw, int dest_epid,
475 struct ep_share_mem_info *buf_pair)
476{
477 union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
478 union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
479 enum fjes_dev_command_response_e ret;
480 int page_count;
481 int timeout;
482 int i, idx;
483 void *addr;
484 int result;
485
486 if (test_bit(dest_epid, &hw->hw_info.buffer_share_bit))
487 return 0;
488
489 memset(req_buf, 0, hw->hw_info.req_buf_size);
490 memset(res_buf, 0, hw->hw_info.res_buf_size);
491
492 req_buf->share_buffer.length = FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(
493 buf_pair->tx.size,
494 buf_pair->rx.size);
495 req_buf->share_buffer.epid = dest_epid;
496
497 idx = 0;
498 req_buf->share_buffer.buffer[idx++] = buf_pair->tx.size;
499 page_count = buf_pair->tx.size / EP_BUFFER_INFO_SIZE;
500 for (i = 0; i < page_count; i++) {
501 addr = ((u8 *)(buf_pair->tx.buffer)) +
502 (i * EP_BUFFER_INFO_SIZE);
503 req_buf->share_buffer.buffer[idx++] =
504 (__le64)(page_to_phys(vmalloc_to_page(addr)) +
505 offset_in_page(addr));
506 }
507
508 req_buf->share_buffer.buffer[idx++] = buf_pair->rx.size;
509 page_count = buf_pair->rx.size / EP_BUFFER_INFO_SIZE;
510 for (i = 0; i < page_count; i++) {
511 addr = ((u8 *)(buf_pair->rx.buffer)) +
512 (i * EP_BUFFER_INFO_SIZE);
513 req_buf->share_buffer.buffer[idx++] =
514 (__le64)(page_to_phys(vmalloc_to_page(addr)) +
515 offset_in_page(addr));
516 }
517
518 res_buf->share_buffer.length = 0;
519 res_buf->share_buffer.code = 0;
520
521 trace_fjes_hw_register_buff_addr_req(req_buf, buf_pair);
522
523 ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_SHARE_BUFFER);
524
525 timeout = FJES_COMMAND_REQ_BUFF_TIMEOUT * 1000;
526 while ((ret == FJES_CMD_STATUS_NORMAL) &&
527 (res_buf->share_buffer.length ==
528 FJES_DEV_COMMAND_SHARE_BUFFER_RES_LEN) &&
529 (res_buf->share_buffer.code == FJES_CMD_REQ_RES_CODE_BUSY) &&
530 (timeout > 0)) {
531 msleep(200 + hw->my_epid * 20);
532 timeout -= (200 + hw->my_epid * 20);
533
534 res_buf->share_buffer.length = 0;
535 res_buf->share_buffer.code = 0;
536
537 ret = fjes_hw_issue_request_command(
538 hw, FJES_CMD_REQ_SHARE_BUFFER);
539 }
540
541 result = 0;
542
543 trace_fjes_hw_register_buff_addr(res_buf, timeout);
544
545 if (res_buf->share_buffer.length !=
546 FJES_DEV_COMMAND_SHARE_BUFFER_RES_LEN) {
547 trace_fjes_hw_register_buff_addr_err("Invalid res_buf");
548 result = -ENOMSG;
549 } else if (ret == FJES_CMD_STATUS_NORMAL) {
550 switch (res_buf->share_buffer.code) {
551 case FJES_CMD_REQ_RES_CODE_NORMAL:
552 result = 0;
553 set_bit(dest_epid, &hw->hw_info.buffer_share_bit);
554 break;
555 case FJES_CMD_REQ_RES_CODE_BUSY:
556 trace_fjes_hw_register_buff_addr_err("Busy Timeout");
557 result = -EBUSY;
558 break;
559 default:
560 result = -EPERM;
561 break;
562 }
563 } else {
564 switch (ret) {
565 case FJES_CMD_STATUS_UNKNOWN:
566 result = -EPERM;
567 break;
568 case FJES_CMD_STATUS_TIMEOUT:
569 trace_fjes_hw_register_buff_addr_err("Timeout");
570 result = -EBUSY;
571 break;
572 case FJES_CMD_STATUS_ERROR_PARAM:
573 case FJES_CMD_STATUS_ERROR_STATUS:
574 default:
575 result = -EPERM;
576 break;
577 }
578 }
579
580 return result;
581}
582
583int fjes_hw_unregister_buff_addr(struct fjes_hw *hw, int dest_epid)
584{
585 union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
586 union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
587 struct fjes_device_shared_info *share = hw->hw_info.share;
588 enum fjes_dev_command_response_e ret;
589 int timeout;
590 int result;
591
592 if (!hw->base)
593 return -EPERM;
594
595 if (!req_buf || !res_buf || !share)
596 return -EPERM;
597
598 if (!test_bit(dest_epid, &hw->hw_info.buffer_share_bit))
599 return 0;
600
601 memset(req_buf, 0, hw->hw_info.req_buf_size);
602 memset(res_buf, 0, hw->hw_info.res_buf_size);
603
604 req_buf->unshare_buffer.length =
605 FJES_DEV_COMMAND_UNSHARE_BUFFER_REQ_LEN;
606 req_buf->unshare_buffer.epid = dest_epid;
607
608 res_buf->unshare_buffer.length = 0;
609 res_buf->unshare_buffer.code = 0;
610
611 trace_fjes_hw_unregister_buff_addr_req(req_buf);
612 ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_UNSHARE_BUFFER);
613
614 timeout = FJES_COMMAND_REQ_BUFF_TIMEOUT * 1000;
615 while ((ret == FJES_CMD_STATUS_NORMAL) &&
616 (res_buf->unshare_buffer.length ==
617 FJES_DEV_COMMAND_UNSHARE_BUFFER_RES_LEN) &&
618 (res_buf->unshare_buffer.code ==
619 FJES_CMD_REQ_RES_CODE_BUSY) &&
620 (timeout > 0)) {
621 msleep(200 + hw->my_epid * 20);
622 timeout -= (200 + hw->my_epid * 20);
623
624 res_buf->unshare_buffer.length = 0;
625 res_buf->unshare_buffer.code = 0;
626
627 ret =
628 fjes_hw_issue_request_command(hw, FJES_CMD_REQ_UNSHARE_BUFFER);
629 }
630
631 result = 0;
632
633 trace_fjes_hw_unregister_buff_addr(res_buf, timeout);
634
635 if (res_buf->unshare_buffer.length !=
636 FJES_DEV_COMMAND_UNSHARE_BUFFER_RES_LEN) {
637 trace_fjes_hw_unregister_buff_addr_err("Invalid res_buf");
638 result = -ENOMSG;
639 } else if (ret == FJES_CMD_STATUS_NORMAL) {
640 switch (res_buf->unshare_buffer.code) {
641 case FJES_CMD_REQ_RES_CODE_NORMAL:
642 result = 0;
643 clear_bit(dest_epid, &hw->hw_info.buffer_share_bit);
644 break;
645 case FJES_CMD_REQ_RES_CODE_BUSY:
646 trace_fjes_hw_unregister_buff_addr_err("Busy Timeout");
647 result = -EBUSY;
648 break;
649 default:
650 result = -EPERM;
651 break;
652 }
653 } else {
654 switch (ret) {
655 case FJES_CMD_STATUS_UNKNOWN:
656 result = -EPERM;
657 break;
658 case FJES_CMD_STATUS_TIMEOUT:
659 trace_fjes_hw_unregister_buff_addr_err("Timeout");
660 result = -EBUSY;
661 break;
662 case FJES_CMD_STATUS_ERROR_PARAM:
663 case FJES_CMD_STATUS_ERROR_STATUS:
664 default:
665 result = -EPERM;
666 break;
667 }
668 }
669
670 return result;
671}
672
673int fjes_hw_raise_interrupt(struct fjes_hw *hw, int dest_epid,
674 enum REG_ICTL_MASK mask)
675{
676 u32 ig = mask | dest_epid;
677
678 wr32(XSCT_IG, cpu_to_le32(ig));
679
680 return 0;
681}
682
683u32 fjes_hw_capture_interrupt_status(struct fjes_hw *hw)
684{
685 u32 cur_is;
686
687 cur_is = rd32(XSCT_IS);
688
689 return cur_is;
690}
691
692void fjes_hw_set_irqmask(struct fjes_hw *hw,
693 enum REG_ICTL_MASK intr_mask, bool mask)
694{
695 if (mask)
696 wr32(XSCT_IMS, intr_mask);
697 else
698 wr32(XSCT_IMC, intr_mask);
699}
700
701bool fjes_hw_epid_is_same_zone(struct fjes_hw *hw, int epid)
702{
703 if (epid >= hw->max_epid)
704 return false;
705
706 if ((hw->ep_shm_info[epid].es_status !=
707 FJES_ZONING_STATUS_ENABLE) ||
708 (hw->ep_shm_info[hw->my_epid].zone ==
709 FJES_ZONING_ZONE_TYPE_NONE))
710 return false;
711 else
712 return (hw->ep_shm_info[epid].zone ==
713 hw->ep_shm_info[hw->my_epid].zone);
714}
715
716int fjes_hw_epid_is_shared(struct fjes_device_shared_info *share,
717 int dest_epid)
718{
719 int value = false;
720
721 if (dest_epid < share->epnum)
722 value = share->ep_status[dest_epid];
723
724 return value;
725}
726
727static bool fjes_hw_epid_is_stop_requested(struct fjes_hw *hw, int src_epid)
728{
729 return test_bit(src_epid, &hw->txrx_stop_req_bit);
730}
731
732static bool fjes_hw_epid_is_stop_process_done(struct fjes_hw *hw, int src_epid)
733{
734 return (hw->ep_shm_info[src_epid].tx.info->v1i.rx_status &
735 FJES_RX_STOP_REQ_DONE);
736}
737
738enum ep_partner_status
739fjes_hw_get_partner_ep_status(struct fjes_hw *hw, int epid)
740{
741 enum ep_partner_status status;
742
743 if (fjes_hw_epid_is_shared(hw->hw_info.share, epid)) {
744 if (fjes_hw_epid_is_stop_requested(hw, epid)) {
745 status = EP_PARTNER_WAITING;
746 } else {
747 if (fjes_hw_epid_is_stop_process_done(hw, epid))
748 status = EP_PARTNER_COMPLETE;
749 else
750 status = EP_PARTNER_SHARED;
751 }
752 } else {
753 status = EP_PARTNER_UNSHARE;
754 }
755
756 return status;
757}
758
759void fjes_hw_raise_epstop(struct fjes_hw *hw)
760{
761 enum ep_partner_status status;
762 unsigned long flags;
763 int epidx;
764
765 for (epidx = 0; epidx < hw->max_epid; epidx++) {
766 if (epidx == hw->my_epid)
767 continue;
768
769 status = fjes_hw_get_partner_ep_status(hw, epidx);
770 switch (status) {
771 case EP_PARTNER_SHARED:
772 fjes_hw_raise_interrupt(hw, epidx,
773 REG_ICTL_MASK_TXRX_STOP_REQ);
774 hw->ep_shm_info[epidx].ep_stats.send_intr_unshare += 1;
775 break;
776 default:
777 break;
778 }
779
780 set_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit);
781 set_bit(epidx, &hw->txrx_stop_req_bit);
782
783 spin_lock_irqsave(&hw->rx_status_lock, flags);
784 hw->ep_shm_info[epidx].tx.info->v1i.rx_status |=
785 FJES_RX_STOP_REQ_REQUEST;
786 spin_unlock_irqrestore(&hw->rx_status_lock, flags);
787 }
788}
789
790int fjes_hw_wait_epstop(struct fjes_hw *hw)
791{
792 enum ep_partner_status status;
793 union ep_buffer_info *info;
794 int wait_time = 0;
795 int epidx;
796
797 while (hw->hw_info.buffer_unshare_reserve_bit &&
798 (wait_time < FJES_COMMAND_EPSTOP_WAIT_TIMEOUT * 1000)) {
799 for (epidx = 0; epidx < hw->max_epid; epidx++) {
800 if (epidx == hw->my_epid)
801 continue;
802 status = fjes_hw_epid_is_shared(hw->hw_info.share,
803 epidx);
804 info = hw->ep_shm_info[epidx].rx.info;
805 if ((!status ||
806 (info->v1i.rx_status &
807 FJES_RX_STOP_REQ_DONE)) &&
808 test_bit(epidx,
809 &hw->hw_info.buffer_unshare_reserve_bit)) {
810 clear_bit(epidx,
811 &hw->hw_info.buffer_unshare_reserve_bit);
812 }
813 }
814
815 msleep(100);
816 wait_time += 100;
817 }
818
819 for (epidx = 0; epidx < hw->max_epid; epidx++) {
820 if (epidx == hw->my_epid)
821 continue;
822 if (test_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit))
823 clear_bit(epidx,
824 &hw->hw_info.buffer_unshare_reserve_bit);
825 }
826
827 return (wait_time < FJES_COMMAND_EPSTOP_WAIT_TIMEOUT * 1000)
828 ? 0 : -EBUSY;
829}
830
831bool fjes_hw_check_epbuf_version(struct epbuf_handler *epbh, u32 version)
832{
833 union ep_buffer_info *info = epbh->info;
834
835 return (info->common.version == version);
836}
837
838bool fjes_hw_check_mtu(struct epbuf_handler *epbh, u32 mtu)
839{
840 union ep_buffer_info *info = epbh->info;
841
842 return ((info->v1i.frame_max == FJES_MTU_TO_FRAME_SIZE(mtu)) &&
843 info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE);
844}
845
846bool fjes_hw_check_vlan_id(struct epbuf_handler *epbh, u16 vlan_id)
847{
848 union ep_buffer_info *info = epbh->info;
849 bool ret = false;
850 int i;
851
852 if (vlan_id == 0) {
853 ret = true;
854 } else {
855 for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) {
856 if (vlan_id == info->v1i.vlan_id[i]) {
857 ret = true;
858 break;
859 }
860 }
861 }
862 return ret;
863}
864
865bool fjes_hw_set_vlan_id(struct epbuf_handler *epbh, u16 vlan_id)
866{
867 union ep_buffer_info *info = epbh->info;
868 int i;
869
870 for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) {
871 if (info->v1i.vlan_id[i] == 0) {
872 info->v1i.vlan_id[i] = vlan_id;
873 return true;
874 }
875 }
876 return false;
877}
878
879void fjes_hw_del_vlan_id(struct epbuf_handler *epbh, u16 vlan_id)
880{
881 union ep_buffer_info *info = epbh->info;
882 int i;
883
884 if (0 != vlan_id) {
885 for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) {
886 if (vlan_id == info->v1i.vlan_id[i])
887 info->v1i.vlan_id[i] = 0;
888 }
889 }
890}
891
892bool fjes_hw_epbuf_rx_is_empty(struct epbuf_handler *epbh)
893{
894 union ep_buffer_info *info = epbh->info;
895
896 if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE))
897 return true;
898
899 if (info->v1i.count_max == 0)
900 return true;
901
902 return EP_RING_EMPTY(info->v1i.head, info->v1i.tail,
903 info->v1i.count_max);
904}
905
906void *fjes_hw_epbuf_rx_curpkt_get_addr(struct epbuf_handler *epbh,
907 size_t *psize)
908{
909 union ep_buffer_info *info = epbh->info;
910 struct esmem_frame *ring_frame;
911 void *frame;
912
913 ring_frame = (struct esmem_frame *)&(epbh->ring[EP_RING_INDEX
914 (info->v1i.head,
915 info->v1i.count_max) *
916 info->v1i.frame_max]);
917
918 *psize = (size_t)ring_frame->frame_size;
919
920 frame = ring_frame->frame_data;
921
922 return frame;
923}
924
925void fjes_hw_epbuf_rx_curpkt_drop(struct epbuf_handler *epbh)
926{
927 union ep_buffer_info *info = epbh->info;
928
929 if (fjes_hw_epbuf_rx_is_empty(epbh))
930 return;
931
932 EP_RING_INDEX_INC(epbh->info->v1i.head, info->v1i.count_max);
933}
934
935int fjes_hw_epbuf_tx_pkt_send(struct epbuf_handler *epbh,
936 void *frame, size_t size)
937{
938 union ep_buffer_info *info = epbh->info;
939 struct esmem_frame *ring_frame;
940
941 if (EP_RING_FULL(info->v1i.head, info->v1i.tail, info->v1i.count_max))
942 return -ENOBUFS;
943
944 ring_frame = (struct esmem_frame *)&(epbh->ring[EP_RING_INDEX
945 (info->v1i.tail - 1,
946 info->v1i.count_max) *
947 info->v1i.frame_max]);
948
949 ring_frame->frame_size = size;
950 memcpy((void *)(ring_frame->frame_data), (void *)frame, size);
951
952 EP_RING_INDEX_INC(epbh->info->v1i.tail, info->v1i.count_max);
953
954 return 0;
955}
956
957static void fjes_hw_update_zone_task(struct work_struct *work)
958{
959 struct fjes_hw *hw = container_of(work,
960 struct fjes_hw, update_zone_task);
961
962 struct my_s {u8 es_status; u8 zone; } *info;
963 union fjes_device_command_res *res_buf;
964 enum ep_partner_status pstatus;
965
966 struct fjes_adapter *adapter;
967 struct net_device *netdev;
968 unsigned long flags;
969
970 ulong unshare_bit = 0;
971 ulong share_bit = 0;
972 ulong irq_bit = 0;
973
974 int epidx;
975 int ret;
976
977 adapter = (struct fjes_adapter *)hw->back;
978 netdev = adapter->netdev;
979 res_buf = hw->hw_info.res_buf;
980 info = (struct my_s *)&res_buf->info.info;
981
982 mutex_lock(&hw->hw_info.lock);
983
984 ret = fjes_hw_request_info(hw);
985 switch (ret) {
986 case -ENOMSG:
987 case -EBUSY:
988 default:
989 if (!work_pending(&adapter->force_close_task)) {
990 adapter->force_reset = true;
991 schedule_work(&adapter->force_close_task);
992 }
993 break;
994
995 case 0:
996
997 for (epidx = 0; epidx < hw->max_epid; epidx++) {
998 if (epidx == hw->my_epid) {
999 hw->ep_shm_info[epidx].es_status =
1000 info[epidx].es_status;
1001 hw->ep_shm_info[epidx].zone =
1002 info[epidx].zone;
1003 continue;
1004 }
1005
1006 pstatus = fjes_hw_get_partner_ep_status(hw, epidx);
1007 switch (pstatus) {
1008 case EP_PARTNER_UNSHARE:
1009 default:
1010 if ((info[epidx].zone !=
1011 FJES_ZONING_ZONE_TYPE_NONE) &&
1012 (info[epidx].es_status ==
1013 FJES_ZONING_STATUS_ENABLE) &&
1014 (info[epidx].zone ==
1015 info[hw->my_epid].zone))
1016 set_bit(epidx, &share_bit);
1017 else
1018 set_bit(epidx, &unshare_bit);
1019 break;
1020
1021 case EP_PARTNER_COMPLETE:
1022 case EP_PARTNER_WAITING:
1023 if ((info[epidx].zone ==
1024 FJES_ZONING_ZONE_TYPE_NONE) ||
1025 (info[epidx].es_status !=
1026 FJES_ZONING_STATUS_ENABLE) ||
1027 (info[epidx].zone !=
1028 info[hw->my_epid].zone)) {
1029 set_bit(epidx,
1030 &adapter->unshare_watch_bitmask);
1031 set_bit(epidx,
1032 &hw->hw_info.buffer_unshare_reserve_bit);
1033 }
1034 break;
1035
1036 case EP_PARTNER_SHARED:
1037 if ((info[epidx].zone ==
1038 FJES_ZONING_ZONE_TYPE_NONE) ||
1039 (info[epidx].es_status !=
1040 FJES_ZONING_STATUS_ENABLE) ||
1041 (info[epidx].zone !=
1042 info[hw->my_epid].zone))
1043 set_bit(epidx, &irq_bit);
1044 break;
1045 }
1046
1047 hw->ep_shm_info[epidx].es_status =
1048 info[epidx].es_status;
1049 hw->ep_shm_info[epidx].zone = info[epidx].zone;
1050 }
1051 break;
1052 }
1053
1054 mutex_unlock(&hw->hw_info.lock);
1055
1056 for (epidx = 0; epidx < hw->max_epid; epidx++) {
1057 if (epidx == hw->my_epid)
1058 continue;
1059
1060 if (test_bit(epidx, &share_bit)) {
1061 spin_lock_irqsave(&hw->rx_status_lock, flags);
1062 fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
1063 netdev->dev_addr, netdev->mtu);
1064 spin_unlock_irqrestore(&hw->rx_status_lock, flags);
1065
1066 mutex_lock(&hw->hw_info.lock);
1067
1068 ret = fjes_hw_register_buff_addr(
1069 hw, epidx, &hw->ep_shm_info[epidx]);
1070
1071 switch (ret) {
1072 case 0:
1073 break;
1074 case -ENOMSG:
1075 case -EBUSY:
1076 default:
1077 if (!work_pending(&adapter->force_close_task)) {
1078 adapter->force_reset = true;
1079 schedule_work(
1080 &adapter->force_close_task);
1081 }
1082 break;
1083 }
1084 mutex_unlock(&hw->hw_info.lock);
1085
1086 hw->ep_shm_info[epidx].ep_stats
1087 .com_regist_buf_exec += 1;
1088 }
1089
1090 if (test_bit(epidx, &unshare_bit)) {
1091 mutex_lock(&hw->hw_info.lock);
1092
1093 ret = fjes_hw_unregister_buff_addr(hw, epidx);
1094
1095 switch (ret) {
1096 case 0:
1097 break;
1098 case -ENOMSG:
1099 case -EBUSY:
1100 default:
1101 if (!work_pending(&adapter->force_close_task)) {
1102 adapter->force_reset = true;
1103 schedule_work(
1104 &adapter->force_close_task);
1105 }
1106 break;
1107 }
1108
1109 mutex_unlock(&hw->hw_info.lock);
1110
1111 hw->ep_shm_info[epidx].ep_stats
1112 .com_unregist_buf_exec += 1;
1113
1114 if (ret == 0) {
1115 spin_lock_irqsave(&hw->rx_status_lock, flags);
1116 fjes_hw_setup_epbuf(
1117 &hw->ep_shm_info[epidx].tx,
1118 netdev->dev_addr, netdev->mtu);
1119 spin_unlock_irqrestore(&hw->rx_status_lock,
1120 flags);
1121 }
1122 }
1123
1124 if (test_bit(epidx, &irq_bit)) {
1125 fjes_hw_raise_interrupt(hw, epidx,
1126 REG_ICTL_MASK_TXRX_STOP_REQ);
1127
1128 hw->ep_shm_info[epidx].ep_stats.send_intr_unshare += 1;
1129
1130 set_bit(epidx, &hw->txrx_stop_req_bit);
1131 spin_lock_irqsave(&hw->rx_status_lock, flags);
1132 hw->ep_shm_info[epidx].tx.
1133 info->v1i.rx_status |=
1134 FJES_RX_STOP_REQ_REQUEST;
1135 spin_unlock_irqrestore(&hw->rx_status_lock, flags);
1136 set_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit);
1137 }
1138 }
1139
1140 if (irq_bit || adapter->unshare_watch_bitmask) {
1141 if (!work_pending(&adapter->unshare_watch_task))
1142 queue_work(adapter->control_wq,
1143 &adapter->unshare_watch_task);
1144 }
1145}
1146
1147static void fjes_hw_epstop_task(struct work_struct *work)
1148{
1149 struct fjes_hw *hw = container_of(work, struct fjes_hw, epstop_task);
1150 struct fjes_adapter *adapter = (struct fjes_adapter *)hw->back;
1151 unsigned long flags;
1152
1153 ulong remain_bit;
1154 int epid_bit;
1155
1156 while ((remain_bit = hw->epstop_req_bit)) {
1157 for (epid_bit = 0; remain_bit; remain_bit >>= 1, epid_bit++) {
1158 if (remain_bit & 1) {
1159 spin_lock_irqsave(&hw->rx_status_lock, flags);
1160 hw->ep_shm_info[epid_bit].
1161 tx.info->v1i.rx_status |=
1162 FJES_RX_STOP_REQ_DONE;
1163 spin_unlock_irqrestore(&hw->rx_status_lock,
1164 flags);
1165
1166 clear_bit(epid_bit, &hw->epstop_req_bit);
1167 set_bit(epid_bit,
1168 &adapter->unshare_watch_bitmask);
1169
1170 if (!work_pending(&adapter->unshare_watch_task))
1171 queue_work(
1172 adapter->control_wq,
1173 &adapter->unshare_watch_task);
1174 }
1175 }
1176 }
1177}
1178
1179int fjes_hw_start_debug(struct fjes_hw *hw)
1180{
1181 union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
1182 union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
1183 enum fjes_dev_command_response_e ret;
1184 int page_count;
1185 int result = 0;
1186 void *addr;
1187 int i;
1188
1189 if (!hw->hw_info.trace)
1190 return -EPERM;
1191 memset(hw->hw_info.trace, 0, FJES_DEBUG_BUFFER_SIZE);
1192
1193 memset(req_buf, 0, hw->hw_info.req_buf_size);
1194 memset(res_buf, 0, hw->hw_info.res_buf_size);
1195
1196 req_buf->start_trace.length =
1197 FJES_DEV_COMMAND_START_DBG_REQ_LEN(hw->hw_info.trace_size);
1198 req_buf->start_trace.mode = hw->debug_mode;
1199 req_buf->start_trace.buffer_len = hw->hw_info.trace_size;
1200 page_count = hw->hw_info.trace_size / FJES_DEBUG_PAGE_SIZE;
1201 for (i = 0; i < page_count; i++) {
1202 addr = ((u8 *)hw->hw_info.trace) + i * FJES_DEBUG_PAGE_SIZE;
1203 req_buf->start_trace.buffer[i] =
1204 (__le64)(page_to_phys(vmalloc_to_page(addr)) +
1205 offset_in_page(addr));
1206 }
1207
1208 res_buf->start_trace.length = 0;
1209 res_buf->start_trace.code = 0;
1210
1211 trace_fjes_hw_start_debug_req(req_buf);
1212 ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_START_DEBUG);
1213 trace_fjes_hw_start_debug(res_buf);
1214
1215 if (res_buf->start_trace.length !=
1216 FJES_DEV_COMMAND_START_DBG_RES_LEN) {
1217 result = -ENOMSG;
1218 trace_fjes_hw_start_debug_err("Invalid res_buf");
1219 } else if (ret == FJES_CMD_STATUS_NORMAL) {
1220 switch (res_buf->start_trace.code) {
1221 case FJES_CMD_REQ_RES_CODE_NORMAL:
1222 result = 0;
1223 break;
1224 default:
1225 result = -EPERM;
1226 break;
1227 }
1228 } else {
1229 switch (ret) {
1230 case FJES_CMD_STATUS_UNKNOWN:
1231 result = -EPERM;
1232 break;
1233 case FJES_CMD_STATUS_TIMEOUT:
1234 trace_fjes_hw_start_debug_err("Busy Timeout");
1235 result = -EBUSY;
1236 break;
1237 case FJES_CMD_STATUS_ERROR_PARAM:
1238 case FJES_CMD_STATUS_ERROR_STATUS:
1239 default:
1240 result = -EPERM;
1241 break;
1242 }
1243 }
1244
1245 return result;
1246}
1247
1248int fjes_hw_stop_debug(struct fjes_hw *hw)
1249{
1250 union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
1251 union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
1252 enum fjes_dev_command_response_e ret;
1253 int result = 0;
1254
1255 if (!hw->hw_info.trace)
1256 return -EPERM;
1257
1258 memset(req_buf, 0, hw->hw_info.req_buf_size);
1259 memset(res_buf, 0, hw->hw_info.res_buf_size);
1260 req_buf->stop_trace.length = FJES_DEV_COMMAND_STOP_DBG_REQ_LEN;
1261
1262 res_buf->stop_trace.length = 0;
1263 res_buf->stop_trace.code = 0;
1264
1265 ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_STOP_DEBUG);
1266 trace_fjes_hw_stop_debug(res_buf);
1267
1268 if (res_buf->stop_trace.length != FJES_DEV_COMMAND_STOP_DBG_RES_LEN) {
1269 trace_fjes_hw_stop_debug_err("Invalid res_buf");
1270 result = -ENOMSG;
1271 } else if (ret == FJES_CMD_STATUS_NORMAL) {
1272 switch (res_buf->stop_trace.code) {
1273 case FJES_CMD_REQ_RES_CODE_NORMAL:
1274 result = 0;
1275 hw->debug_mode = 0;
1276 break;
1277 default:
1278 result = -EPERM;
1279 break;
1280 }
1281 } else {
1282 switch (ret) {
1283 case FJES_CMD_STATUS_UNKNOWN:
1284 result = -EPERM;
1285 break;
1286 case FJES_CMD_STATUS_TIMEOUT:
1287 result = -EBUSY;
1288 trace_fjes_hw_stop_debug_err("Busy Timeout");
1289 break;
1290 case FJES_CMD_STATUS_ERROR_PARAM:
1291 case FJES_CMD_STATUS_ERROR_STATUS:
1292 default:
1293 result = -EPERM;
1294 break;
1295 }
1296 }
1297
1298 return result;
1299}
1300
